D. Stuart

The Intermediate Silicon Layers (ISL) detector is currently being built as part of the CDF II detector upgrade project. The ISL detector will significantly improve tracking in the central region and, together with the Silicon Vertex detector, provide stand-alone 3D track information in the forward/backward regions. In this article, we present the quality of the production sensors manufactured by Hamamatsu Photonics, which account for roughly half of the silicon sensors used in the ISL detector.

We report on a search for elementary particles with charges much smaller than the electron charge using a data sample of proton-proton collisions provided by the CERN Large Hadron Collider in 2018, corresponding to an integrated luminosity of 37.5 fb$^{-1}$ at a center-of-mass energy of 13 TeV. A prototype scintillator-based detector is deployed to conduct the first search at a hadron collider sensitive to particles with charges ${\leq}0.1e$. The existence of new particles with masses between 20 and 4700 MeV is excluded at 95% confidence level for charges between $0.006e$ and $0.3e$, depending on their mass. New sensitivity is achieved for masses larger than $700$ MeV.

We report on the expected sensitivity of dedicated scintillator-based detectors at the LHC for elementary particles with charges much smaller than the electron charge. The dataset provided by a prototype scintillator-based detector is used to characterize the performance of the detector and provide an accurate background projection. Detector designs, including a novel slab detector configuration, are considered for the data taking period of the LHC to start in 2022 (Run 3) and for the high luminosity LHC. With the Run 3 dataset, the existence of new particles with masses between 10 MeV and 45 GeV could be excluded at 95% confidence level for charges between 0.003 e and 0.3 e, depending on their mass. With the high luminosity LHC dataset, the expected limits would reach between 10 MeV and 80 GeV for charges between 0.0018 e and 0.3 e, depending on their mass.Received 14 April 2021Accepted 12 July 2021DOI:https://doi.org/10.1103/PhysRevD.104.032002Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.Published by the American Physical SocietyPhysics Subject Headings (PhySH)Research AreasHypothetical particle physics modelsParticle dark matterTechniquesScintillatorsGeneral PhysicsParticles & Fields

The Collider Detector at Fermilab (CDF) radiation hardened silicon vertex detector (SVX') is described. The new detector has several improvements over its predecessor such as better signal to noise and higher efficiency. It is expected to have a radiation tolerance in excess of 1 Mrad. It has been taking data for several months and some preliminary results are shown.

We present the general properties of multihadron final states produced by ${e}^{+}{e}^{\ensuremath{-}}$ annihilation at center-of-mass energies from 52 to 57 GeV in the AMY detector at the KEK collider TRISTAN. Global shape, inclusive charged-particle, and particle-flow distributions are presented. Our measurements are compared with QCD+fragmentation models that use either leading-logarithmic parton-shower evolution or QCD matrix elements at the parton level, and either string or cluster fragmentation for hadronization.

We present results of an experimental study of e+e−+ hadrons in the kinematic regime for which the process is interpreted as hadron production in collisions of almost-real photons. The data sample corresponds to an integrated luminosity of 27.5 pb− and covers center-of-mass energies from 55 to 61.4 GeV. We observe more events than expected from the incoherent sum of quark-parton and vector-meson-dominance models, and we give a quantitative explanation of the excess by including the hard scattering of the hadronic constituents of the photons calculated with QCD.

When the rate of protein anabolism in the host was increased by testosterone or growth hormone, increases in rate of proliferation and amount of influenza virus were clearly demonstrated.

The production of a standard model Higgs boson in association with a top quark pair at the upcoming high luminosity run ( 15 fb(-1) integrated luminosity) of the Fermilab Tevatron ( square root of s = 2.0 TeV) is revisited. For Higgs masses below 140 GeV we demonstrate that the production cross section times branching ratio for H-->bb macro decays yields a significant number of events and that this mode is competitive with and complementary to the searches using pp(macro) -->WH,ZH associated production. For higher mass Higgs bosons the H-->W(+)W(-) decays are more difficult but have the potential to provide a few spectacular events.

We present the charged-particle multiplicity distributions for ${e}^{+}{e}^{\ensuremath{-}}$ annihilation at center-of-mass energies from 50 to 61.4 GeV. The results are based on a data sample corresponding to a total integrated luminosity of 30 ${\mathrm{pb}}^{\ensuremath{-}1}$ obtained with the AMY detector at the KEK storage ring TRISTAN. The charged-particle multiplicity distributions deviate significantly from the modified Poisson and pair Poisson distributions, but follow Koba-Nielsen-Olesen scaling and are well reproduced by the LUND parton-shower model.

The Collider Detector at Fermilab (CDF) pursues a broad physics program at Fermilab's Tevatron collider. Between Run II commissioning in early 2001 and the end of operations in September 2011, the Tevatron delivered 12 fb-1 of integrated luminosity of p-pbar collisions at sqrt(s)=1.96 TeV. Many physics analyses undertaken by CDF require heavy flavor tagging with large charged particle tracking acceptance. To realize these goals, in 2001 CDF installed eight layers of silicon microstrip detectors around its interaction region. These detectors were designed for 2--5 years of operation, radiation doses up to 2 Mrad (0.02 Gy), and were expected to be replaced in 2004. The sensors were not replaced, and the Tevatron run was extended for several years beyond its design, exposing the sensors and electronics to much higher radiation doses than anticipated. In this paper we describe the operational challenges encountered over the past 10 years of running the CDF silicon detectors, the preventive measures undertaken, and the improvements made along the way to ensure their optimal performance for collecting high quality physics data. In addition, we describe the quantities and methods used to monitor radiation damage in the sensors for optimal performance and summarize the detector performance quantities important to CDF's physics program, including vertex resolution, heavy flavor tagging, and silicon vertex trigger performance.

We present cross section measurements for inclusive jet production in almost-real photon-photon interactions at TRISTAN using the AMY detector. The results are compared with leading-order QCD calculations for different parameterizations of the parton density in the photon.

The photon structure function F2 has been measured at average Q2 values of 73,160 and 390 (GeVc)2. We compare the x dependence of the Q2 = 73 (GeVc)2 data with theoretical expectations based on QCD. In addition we present results on the Q2 evolution of the structure function for the intermediate x range (0.3⩽ x ⩽0.8). The results are consistent with QCD.

Three-jet events produced in ${e}^{+}$${e}^{\mathrm{\ensuremath{-}}}$ annihilations are used to provide comparisons between quark and gluon jets. Differences between quark-induced and gluon-induced jets are observed. Quark jets tend to have a more tightly collimated structure than gluon jets, which is reflected in the concentration of a larger fraction of the jet's energy near the jet axis.

Brief Reports1 August 1978Diabetic Gustatory SweatingDAVID D. STUART, M.D.DAVID D. STUART, M.D.Search for more papers by this authorAuthor, Article, and Disclosure Informationhttps://doi.org/10.7326/0003-4819-89-2-223 SectionsAboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinkedInRedditEmail ExcerptThe term "gustatory sweating" refers to sweating induced by the ingestion of food. Facial sweating is a physiologic response to eating highly spiced food (1). In some persons facial sweating occurs as an idiosyncratic response to specific types of food; cheese is frequently a stimulant to sweating in susceptible persons (2). In contrast to physiologic gustatory sweating, which is diffuse and symmetrical (1), circumscribed gustatory sweating may develop after abscess, trauma, or surgery of the parotid gland, in which case it is known as Frey's syndrome (3). In 1973 Watkins (4) described the cases of six patients in whom diffuse...References1. LEE T: Physiological gustatory sweating in a warm climate. J Physiol (Lond) 124:528-542, 1954 CrossrefGoogle Scholar2. VAISRUB S: By the sweat of thy brow (editorial). JAMA 232:1360, 1975 CrossrefMedlineGoogle Scholar3. BEDNAREKREIDMATSUMOTO JWT: Frey's syndrome. Am J Surg 131:592-594, 1976 CrossrefMedlineGoogle Scholar4. WATKINS P: Facial sweating after food: new sign of diabetic autonomic neuropathy. Br Med J 1:583-587, 1973 CrossrefMedlineGoogle Scholar5. FRIEDMANPOMARICO WJ: The intratympanic correction of Frey's syndrome. Arch Surg 108:366-368, 1974 CrossrefMedlineGoogle Scholar6. FREEDBERGSHAWMCMANUS ARM: The auriculotemporal syndrome. A clinical and pharmacologic study. J Clin Invest 27:669-676, 1948 CrossrefMedlineGoogle Scholar This content is PDF only. To continue reading please click on the PDF icon. Author, Article, and Disclosure InformationAffiliations: Hennepin County Medical Center Minneapolis, Minnesota PreviousarticleNextarticle Advertisement FiguresReferencesRelatedDetails Metrics Cited byGustatory sweating in people with type 1 and type 2 diabetes mellitus: Prevalence and risk factorsFrey's SyndromeDevelopment of a small wireless device for perspiration monitoringHyperhidrosisDiabetic Autonomic NeuropathyGustatory facial sweating subsequent to upper thoracic sympathectomyBilateral gustatory sweating as a sign of diabetic neuropathyFREY'S SYNDROME FOLLOWING PAROTID SURGERYAntisympathetic ganglia antibodies in a patient with gustatory sweatingBiology of sweat glands and their disorders. II. Disorders of sweat gland functionFrey's SyndromeEpisodic hyperhidrosis on the dorsum of handsClonidine hydrochloride: Review of pharmacologic and clinical aspectsClonidine Effect on Diabetic Gustatory SweatingH. U. JANKA, M.D., E. STANDL, M.D., H. MEHNERT, M.D.Treatment of Frey’s Syndrome 1 August 1978Volume 89, Issue 2Page: 223-224KeywordsAbscessesCheesesEatingFoodIngestionParotid glandsTrauma surgery Issue Published: 1 August 1978 PDF downloadLoading ...

The photon structure function F2γ has been measured at average Q2 values of 73 and 390 GeV2 using data collected by the AMY detector at the TRISTAN e+e− collider. F2γ is observed to be increasing as ln Q2. The x-dependence of F2γ, where x is the momentum fraction carried by the parton inside the photon, is also measured. The measurements are compared with several parton density models.

The ratio $R$ of the total cross section for ${e}^{+}{e}^{\ensuremath{-}}$ annihilation into hadrons to the lowest-order QED cross section for ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}$ has been measured for center-of-mass energies ranging from 50 to 61.4 GeV. If we allow for an overall shift of ---4.9%, about 1.5 times our estimated normalization error, the results are consistent with the standard-model predictions.

Summary The study reports on the evolution of the Australian radiologist relative value unit (RVU) model of measuring radiologist reporting workloads in teaching hospital departments, and aims to outline a way forward for the development of a broad national safety, quality and performance framework that enables value mapping, measurement and benchmarking. The Radiology International Benchmarking Project of Queensland Health provided a suitable high‐level national forum where the existing Pitman–Jones RVU model was applied to contemporaneous data, and its shortcomings and potential avenues for future development were analysed. Application of the Pitman–Jones model to Queensland data and also a Victorian benchmark showed that the original recommendation of 40 000 crude RVU per full‐time equivalent consultant radiologist (97–98 baseline level) has risen only moderately, to now lie around 45 000 crude RVU/full‐time equivalent. Notwithstanding this, the model has a number of weaknesses and is becoming outdated, as it cannot capture newer time‐consuming examinations particularly in CT. A significant re‐evaluation of the value of medical imaging is required, and is now occurring. We must rethink how we measure, benchmark, display and continually improve medical imaging safety, quality and performance, throughout the imaging care cycle and beyond. It will be necessary to ensure alignment with patient needs, as well as clinical and organisational objectives. Clear recommendations for the development of an updated national reporting workload RVU system are available, and an opportunity now exists for developing a much broader national model. A more sophisticated and balanced multidimensional safety, quality and performance framework that enables measurement and benchmarking of all important elements of health‐care service is needed.

The radiation damage experience of the silicon vertex detector used in the CDF experiment during the 1993–1995 collider run is described. The detector is single sided, AC coupled, FOXFET biased, and uses radiation hard readout chips. The detector's noise is seen to increase anomalously with radiation dose.

High-resolution diode laser spectra have been recorded of the Q branches of chlorine nitrate bands lying in the 780 cm−1 region. They are assigned to the ν4 bands of 35ClONO2 at 780.219 cm−1 and 37ClONO2 at 778.865 cm−1, and to the ν4 + ν9 − ν9 band of 35ClONO2 at 778.735 cm−1. Band contour analyses of these spectra and of previously published FTIR spectra have been carried out. The pressure and temperature dependence of the spectra have also been measured. The analysis of these data has been used to compute the temperature and pressure dependence of the absorption needed for stratospheric modelling.

In this LOI we propose a dedicated experiment that would detect milli-charged particles produced by pp collisions at LHC Point 5. The experiment would be installed during LS2 in the vestigial drainage gallery above UXC and would not interfere with CMS operations. With 300 fb$^{-1}$ of integrated luminosity, sensitivity to a particle with charge $\mathcal{O}(10^{-3})~e$ can be achieved for masses of $\mathcal{O}(1)$ GeV, and charge $\mathcal{O}(10^{-2})~e$ for masses of $\mathcal{O}(10)$ GeV, greatly extending the parameter space explored for particles with small charge and masses above 100 MeV.

Searches for the pair production of the supersymmetric partner particles of leptons, quarks, and non-minimal Higgs have been made in e +e − annihilations at center-of-mass energies between 50 and 60.8 GeV using the AMY detector at TRISTAN. No evidence for their existence is observed and 95% CL mass limits are presented.

Using 123 multihadronic inclusive muon-production ${e}^{+}$${e}^{\mathrm{\ensuremath{-}}}$ annihilation events at an average c.m. energy of 55.2 GeV, we extracted the forward-backward charge asymmetry of the ${e}^{+}$${e}^{\mathrm{\ensuremath{-}}}$\ensuremath{\rightarrow}bb\ifmmode\bar\else\textasciimacron\fi{} process and the R ratio for bb\ifmmode\bar\else\textasciimacron\fi{} production. We used an analysis method in which the behavior of the c quark and lighter quarks is assumed, with only that of the b quark left indeterminate. The results, ${A}_{b}$=-0.72\ifmmode\pm\else\textpm\fi{}0.28(stat)\ifmmode\pm\else\textpm\fi{}0.13(syst) and ${R}_{b}$=0.57\ifmmode\pm\else\textpm\fi{}0.16\ifmmode\pm\else\textpm\fi{}0.10, are consistent with the standard model.

When the same set of structure factors is measured twice from separate crystals, some of the differences between the two sets of data will be due to differences in absorption and crystal disorder. This will particularly affect the isomorphous-replacement method. By carefully choosing crystals of the same shape and size, and by recording the reflections in the same order, these sources of error may sometimes be minimized. However, there will be cases where serious errors of this kind will prove unavoidable. A method of deriving a correction for the absorption and decay differences between two sets of structure factors after the measurements have been made is presented. The method is designed to correct protein data collected on a rotation camera. Where an absorption-corrected subset of the observed data is available, the rotation-camera data may be corrected to this. Where this cannot be done, the method allows a relative correction between native and isomorphous-derivative data sets. The method has been implemented on a mini-computer. Results are presented which show that in some cases a substantial improvement in the quality of the data is obtained, as judged by the agreement of symmetry-related amplitudes. Furthermore, the method is capable of improving the reliability of measurements of anomalous scattering from heavy-atom-substituted isomorphous derivatives. The potential usefulness of this method is discussed.

By studying ${e}^{+}$${e}^{\mathrm{\ensuremath{-}}}$ annihilations in the center-of-mass energy range between 50 and 60.8 GeV, we have established a 95%-confidence-level lower limit on the mass of a fourth-generation charge -(1/3 quark b' of 27.2 GeV. In contrast with all previous searches, this limit has been obtained through consideration of the decay processes b'\ensuremath{\rightarrow}b\ensuremath{\gamma} and b'\ensuremath{\rightarrow}bg aswell as b'\ensuremath{\rightarrow}${\mathrm{cW}}^{\mathrm{\ensuremath{-}}}$. For the cases where any one of the three decay modes dominates, we obtain higher mass limits.

The forward-backward asymmetry of quarks produced in ${e}^{+}$${e}^{\mathrm{\ensuremath{-}}}$ annihilations, summed over all flavors, is measured at \ensuremath{\surd}s between 50 and 60.8 GeV. Methods of determining the charge direction of jet pairs are discussed. The asymmetry is found to agree with the five-flavor standard model.

Abstract A new silicon microstrip detector was designed by the CDF collaboration for the proposed high-luminosity operation of the Tevatron p p ¯ collider (Run IIb). The detector is radiation-tolerant and will still be functional after exposure to particle fluences of 10 14 1 - MeV equivalent neutrons / cm 2 and radiation doses of 20 MRad. The detector will maintain or exceed the performance of the current CDF silicon detector throughout Run IIb. It is based on an innovative silicon “supermodule” design. Critical detector components like the custom radiation-hard SVX4 readout chip, the beryllia hybrids and mini-port (repeater) cards, and the silicon sensors fulfill their specifications and were produced with high yields. The design goals and solutions of the CDF Run IIb silicon detector are described, and the performance of preproduction modules is presented in detail. Results relevant for the development of future silicon systems are emphasized.

The DESY II Test Beam Facility is a key infrastructure for modern high energy physics detector development, providing particles with a small momentum spread in a range from 1 to 6 GeV to user groups e.g. from the LHC experiments and Belle II as well as generic detector R&D. Beam telescopes are provided in all three test beam areas as precise tracking reference without time stamping, with triggered readout and a readout time of > 115 μs . If the highest available rates are used, multiple particles are traversing the telescopes within one readout frame, thus creating ambiguities that cannot be resolved without additional timing layers. Several upgrades are currently investigated and tested: Firstly, a fast monolithic pixel sensor, the TelePix, to provide precise track timing and triggering on a region of interest is proposed to overcome this limitation. The TelePix is a 180 nm HV-CMOS sensor that has been developed jointly by DESY, KIT and the University of Heidelberg and designed at KIT. In this publication, the performance evaluation is presented: The difference between two amplifier designs is evaluated. A high hit detection efficiency of above 99.9 % combined with a time resolution of below 4 ns at negligible pixel noise rates is determined. Finally, the digital hit output to provide region of interest triggering is evaluated and shows a short absolute delay with respect to a traditional trigger scintillator as well as an excellent time resolution. Secondly, a fast LGAD plane has been proposed to provide a time resolution of a few 10 ps, which is foreseen to drastically improve the timing performance of the telescope. Time resolutions of below 70 ps have been determined in collaboration with the University of California, Santa Barbara.

The prospects for discovering and studying signals of low-scale supersymmetry breaking models at the Tevatron Run II and beyond are explored. These models include gauge-mediated supersymmetry breaking as the most compelling and concrete realization, but more generally are distinguished by the presence of a nearly massless Goldstino as the lightest supersymmetric particle. The next-lightest supersymmetric particle(s) (NLSP) decays to its partner and the Goldstino. Depending on the supersymmetry breaking scale, these decays can occur promptly or on a scale comparable to or larger than the size of a detector. A systematic analysis based on a classification in terms of the identity of the NLSP and its decay length is presented. The various scenarios are discussed in terms of signatures and possible event selection criteria. The Run II and beyond discovery and exclusion reaches, including the effects of background, are detailed for the most compelling cases. In addition to standard event selection criteria based on missing energy and photons, leptons, jets, taus, tagged b-jets, or reconstructed Z-bosons, more exotic signals of metastable NLSPs such as displaced photons, large negative impact parameter tracks, kink tracks, both opposite and same-sign highly ionizing tracks, time of flight measurements, charge-changing tracks, charge-exchange tracks, and same-sign di-top events are investigated. The interesting possibility of observing a Higgs boson signal in events that are efficiently ''tagged'' by the unique signatures of low-scale supersymmetry breaking is also considered.

We report on a search for the pair production of leptoquarks and colored leptons in e+e− annihilations t center-of-mass energies from 50 to 60.8 GeV, using the AMY detector at TRISTAN. No evidence for such particles is found and 95% CL mass limits are given.

In this LOI we propose a dedicated experiment that would detect "milli-charged" particles produced by pp collisions at LHC Point 5. The experiment would be installed during LS2 in the vestigial drainage gallery above UXC and would not interfere with CMS operations. With 300 fb$^{-1}$ of integrated luminosity, sensitivity to a particle with charge $\mathcal{O}(10^{-3})~e$ can be achieved for masses of $\mathcal{O}(1)$ GeV, and charge $\mathcal{O}(10^{-2})~e$ for masses of $\mathcal{O}(10)$ GeV, greatly extending the parameter space explored for particles with small charge and masses above 100 MeV.

We propose a new experiment sensitive to the detection of millicharged particles produced at the $30$ GeV proton fixed-target collisions at J-PARC. The potential site for the experiment is B2 of the Neutrino Monitor building, $280$ m away from the target. With $\textrm{N}_\textrm{POT}=10^{22}$, the experiment can provide sensitivity to particles with electric charge $3\times10^{-4}\,e$ for mass less than $0.2$ $\textrm{GeV}/\textrm{c}^2$ and $1.5\times10^{-3}\,e$ for mass less than $1.6$ $\textrm{GeV}/\textrm{c}^2$. This brings a substantial extension to the current constraints on the charge and the mass of such particles.

We report results of a study of four-lepton final states produced in e+e− collisions at center-of-mass energies from 50 to 61.4 GeV using the AMY detector at the TRISTAN collider. For the cases where two or three charged tracks are produced at large angles relative to the beam direction, the cross sections agree with QED. However, we observe an excess of e+e−→e+e−μ+μ− events with four tracks at wide angles and with dimuon mass less than 1.0 GeV/c2.

We present a study of the third moment of the inclusive momentum distribution of particles within jets produced by e+ e- annihilation at TRISTAN. In this analysis, the QCD coupling strength αs is determined by fits to the prediction of the Next-to-Leading Logarithm Parton-Shower model. The measured value of αs(57.9 GeV) = 0.134-0.005+0.006.

Abstract The Intermediate Silicon Layers (ISL) detector is part of the CDF upgrade for Run II. The ISL is a large radius (20–28 cm) double-side silicon tracker with a total active area of ≃3.5 m 2 . The full procedure for module production and electrical tests is described.

In reply to a recent article in Social Work , the authors point out certain misconceptions contained in criticisms of behavior modification theory and practice. They argue that the behavioral approach has been empirically demonstrated to be effective in altering problem behavior and that, because of its close ties to experimental psychology and its insistence on operational specificity and conceptual parsimony, it offers decided advantages over more traditional psychodynamic approaches. Specific issues are discussed and the proposal is made that behavioral psychology can deal adequately with all important aspects of complex human behavior.

With data corresponding to 142 pb−1 accumulated at s = 57.8 GeV by the AMY detector at TRISTAN we measure the cross section of the reactions e+e− → μ+μ− and e+e− → τ+τ− and the symmetry in the angular distributions. For the lowest order cross section we obtain σμμ = 27.54 ± 0.65 ± 0.95 pb and σττ = 28.27 ± 0.87 ± 0.69 pb, and for the forward-backward asymmetry, Aμμ = 0.303 ± 0.027 ± 0.008 and Aττ = −0.291 ± 0.040 ± 0.019. These measurements agree with the standard model. Assuming e−μ−τ univrsality we extract the vector and axial coupling constants | gν| = 0.00 ± 0.09 and |gA| = 0.476 ± 0.024. A fit of data to composite models places lower bounds (95% confidence level) on the compositeness scale of 2–4 TeV.

Brief Reports1 October 1978Thyroid Function Tests Simulating Graves' Disease in Alcoholic HepatitisDAVID D. STUART, M.D., ALVIN L. SCHULTZ, M.D., F.A.C.P.DAVID D. STUART, M.D.Search for more papers by this author, ALVIN L. SCHULTZ, M.D., F.A.C.P.Search for more papers by this authorAuthor, Article, and Disclosure Informationhttps://doi.org/10.7326/0003-4819-89-4-514 SectionsAboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinkedInRedditEmail ExcerptThe liver may be a major site of extrathyroidal conversion of thyroxine (T4) to triiodothyronine (T3). Patients with alcoholic liver disease of several types have been observed to have mild but significant elevations of serum thyrotropin (TSH) and free T4, and normal or low free T3compared with control populations (1, 2). Estimated T3production rate in patients with hepatic cirrhosis is substantially less than that of normal persons, whereas the production rate of reverse T3is unchanged (3). These observations suggest that, in patients with liver disease, a compensatory increase in TSH and in thyroidal hormonogenesis occurs in response...References1. NOMURAPITTMANCHAMBERSBUCKSHIMIZU SCJMT: Reduced peripheral conversion of thyroxine to triiodothyronine in patients with hepatic cirrhosis. J Clin Invest 56:643-652, 1975 CrossrefMedlineGoogle Scholar2. CHOPRASOLOMONCHOPRAYOUNGCHUA TECO IDURG: Thyroid hormones and thyrotropin in hepatic cirrhosis. Evidence for euthyroidism despite subnormal serum triiodothyronine. J Clin Endocrinol Metab 39:501-511, 1974 CrossrefMedlineGoogle Scholar3. CHOPRA I: An assessment of daily production and significance of thyroidal secretion of 3,3′, 5′-triiodothyronine (reverse T3) in man. J Clin Invest 58:32-40, 1976 CrossrefMedlineGoogle Scholar4. WONGSCHULTZ EA: Changing values for the normal thyroid radioactive iodine uptake test. JAMA 238:1741-1743, 1977 CrossrefMedlineGoogle Scholar This content is PDF only. To continue reading please click on the PDF icon. Author, Article, and Disclosure InformationAffiliations: Hennepin County Medical Center The University of Minnesota Medical School Minneapolis, Minnesota PreviousarticleNextarticle Advertisement FiguresReferencesRelatedDetails Metrics Cited ByAlcohol, Hormones, and MetabolismChanges in thyroid function tests in physical and psychiatric diseasesThyroid Hormones and the LiverEffects of Chronic Ethanol Administration on 0 2 Consumption in Whole Body and Perfused Liver of the RatAssessment of Thyroid Function in Chronic Alcoholics 1 October 1978Volume 89, Issue 4Page: 514-515KeywordsAlcoholicsCirrhosisHepatitis ALiverLiver diseasesPopulation statisticsThyroidThyroid-stimulating hormoneThyroxineTriiodothyronine Issue Published: 1 October 1978 PDF DownloadLoading ...

The Intermediate Silicon Layers detector (ISL) is a large radius silicon tracker, installed in the CDF detector for the RUN II of the Tevatron Collider. With almost 4 m2 of double-sided silicon sensors and 300,000 electronic channels it represents the biggest system of this kind ever built. The construction and installation phases, the performed quality assurance tests as well as the problems encountered are reviewed. RUN II of the Tevatron officially started on March 1st, 2001. Although the CDF silicon system is still being commissioned, results on the performance of the ISL detector obtained using the first data are presented.

The innermost layer (L00) of the Run IIa silicon detector of CDF was planned to be replaced for the high luminosity Tevatron upgrade of Run IIb. This new silicon layer (L0) is designed to be a radiation tolerant replacement for the otherwise very similar L00 from Run IIa. The data are read out via long, fine-pitch, low-mass cables allowing the hybrids with the chips to sit at higher z(/spl sim/70 cm), outside of the tracking volume. The design and first results from the prototyping phase are presented. Special focus is placed on the amount and the structure of induced noise as well as signal-to-noise values.

A detector layout using O(cm) long, radially pointing, scintillating fibers at large radius is investigated. Such a geometry allows discrimination between high and low pT particles based on their angle of incidence and because high pT particles deposit large ionization in one fiber, while low pT particles deposit small ionization in many fibers. A pixelated array of these fibers provides a phi-z projection of particle trajectories, from which the track parameters can be calculated. The simulated track parameter resolutions are presented, and some of the unique detector and electronics issues associated with such a design are discussed.

The various generations of Silicon Vertex Detectors (SVX, SVX', SVXII) for Collider Detector at Fermilab (CDF) at the Fermilab Tevatron have been fundamental tools for heavy-flavor tagging via secondary vertex detection. The CDF Run IIb Silicon Vertex Detector (SVXIIb) has been designed to be a radiation-tolerant replacement for the currently installed SVXII because SVXII was not expected to survive the Tevatron luminosity anticipated for Run IIb. One major change in the new design is the use of a single mechanical and electrical element throughout the array. This element, called a stave, carries six single-sided silicon sensors on each side and is built using carbon fiber skins with a high thermal conductivity on a foam core with a built-in cooling channel. A Kapton bus cable carries power, data and control signals underneath the silicon sensors on each side of the stave. Sensors are read out in pairs via a ceramic hybrid glued on one of the sensors and equipped with four SVX4 readout chips. This new design concept leads to a very compact mechanical and electrical unit, allowing streamlined production and ease of testing and installation. A description of the design and mechanical performance of the stave is given. Results on the electrical performance obtained using prototype staves are also presented.

The main building block and readout unit of the planned CDF Run IIb silicon detector is a "stave," a highly integrated mechanical, thermal, and electrical structure. One of its characteristic features is a copper-on-Kapton flexible cable for power, high voltage, data transmission, and control signals that is placed directly below the silicon microstrip sensors. The dense packaging makes deadtime-less operation of the stave a challenge since coupling of bus cable activity into the silicon sensors must be suppressed efficiently. The stave design features relevant for deadtime-less operation are discussed. The electrical performance achieved with stave prototypes is presented.

Using 773 muons found in hadronic events from 142 ${\mathrm{pb}}^{\ensuremath{-}1}$ of data at a c.m. energy of 57.8 GeV, we extract the cross section and forward-backward charge asymmetry for the ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}b\overline{b}$ process, and the heavy quark fragmentation function parameters for the Peterson model. For the analysis of the ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}b\overline{b}$ process, we use a method in which the behavior of the $c$ quark and lighter quarks is assumed, with only that of the $b$ quark left indeterminate. The cross section and asymmetry for ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}b\overline{b}$ are found to be ${R}_{b} = 0.57 \ifmmode\pm\else\textpm\fi{} 0.06(\mathrm{stat}) \ifmmode\pm\else\textpm\fi{} 0.08(\mathrm{syst})$ and ${A}_{b} = \ensuremath{-}0.59 \ifmmode\pm\else\textpm\fi{} 0.09 \ifmmode\pm\else\textpm\fi{} 0.09$, respectively. They are consistent with the standard model predictions. For the study of the fragmentation function we use the variable $〈{x}_{E}〉$, the fraction of the beam energy carried by the heavy hadrons. We obtain ${〈{x}_{E}〉}_{c}={0.56}_{\ensuremath{-}0.05\ensuremath{-}0.03}^{+0.04+0.03}$ and ${〈{x}_{E}〉}_{b}={0.65}_{\ensuremath{-}0.04\ensuremath{-}0.06}^{+0.06+0.05}$, respectively. These are in good agreement with previously measured values.

The production of a Standard Model Higgs boson in association with a top quark pair at the upcoming high luminosity run (15 fb -1 integreted luminosity) of the Fermilab Tevatron [Formula: see text] is revisited. For Higgs masses below 140 GeV we demonstrate that the production cross section times branching ratio for [Formula: see text] decays yields a significant number of events and that this mode is competitive with and complementary to the searches using [Formula: see text], ZH associated production. For higher mass Higgs bosons the H → W + W - decays are more difficult but have the potential to provide a few spectacular events.

The infectious enthusiasm of scholars speaking about their research is often perfectly complemented by the never-ending quest of academic audiences for new knowledge, making seminars one of the most forceful and efficient mechanisms for transmitting scholarly information. Indeed, seminar attendance is an integral part of the experience for University of California (UC) researchers, with an estimated 300 to 500 seminars during a typical week of the academic year across 900 departments or programs in the UC system. This translates to well over 10,000 seminars annually that are presented in diverse formats and various frequencies—weekly department, graduate group and center seminars, monthly or quarterly talks in distinguished scholar lecture series, and annual university lectures by eminent faculty.

We report on the activities of the ``QCD Tools for heavy flavors and new physics searches'' working group of the Run II Workshop on QCD and Weak Bosons. The contributions cover the topics of improved parton showering and comparisons of Monte Carlo programs and resummation calculations, recent developments in Pythia, the methodology of measuring backgrounds to new physics searches, variable flavor number schemes for heavy quark electro-production, the underlying event in hard scattering processes, and the Monte Carlo MCFM for NLO processes.

This is an announcement of results concerning a class of solitary wave solutions to semilinear wave equations. The solitary waves studied are solutions of the form <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="phi left-parenthesis t comma x right-parenthesis equals e Superscript i omega t Baseline f Subscript omega Baseline left-parenthesis x right-parenthesis"> <mml:semantics> <mml:mrow> <mml:mi>ϕ<!-- ϕ --></mml:mi> <mml:mo stretchy="false">(</mml:mo> <mml:mi>t</mml:mi> <mml:mo>,</mml:mo> <mml:mi>x</mml:mi> <mml:mo stretchy="false">)</mml:mo> <mml:mo>=</mml:mo> <mml:msup> <mml:mi>e</mml:mi> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mi>i</mml:mi> <mml:mi>ω<!-- ω --></mml:mi> <mml:mi>t</mml:mi> </mml:mrow> </mml:msup> <mml:msub> <mml:mi>f</mml:mi> <mml:mi>ω<!-- ω --></mml:mi> </mml:msub> <mml:mo stretchy="false">(</mml:mo> <mml:mi>x</mml:mi> <mml:mo stretchy="false">)</mml:mo> </mml:mrow> <mml:annotation encoding="application/x-tex">\phi (t,x)=e^{i\omega t}f_\omega (x)</mml:annotation> </mml:semantics> </mml:math> </inline-formula> to semilinear wave equations such as <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="white medium square phi plus m squared phi equals beta left-parenthesis StartAbsoluteValue phi EndAbsoluteValue right-parenthesis phi"> <mml:semantics> <mml:mrow> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mo>◻</mml:mo> </mml:mrow> <mml:mi>ϕ<!-- ϕ --></mml:mi> <mml:mo>+</mml:mo> <mml:msup> <mml:mi>m</mml:mi> <mml:mn>2</mml:mn> </mml:msup> <mml:mi>ϕ<!-- ϕ --></mml:mi> <mml:mo>=</mml:mo> <mml:mi>β<!-- β --></mml:mi> <mml:mo stretchy="false">(</mml:mo> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mo stretchy="false">|</mml:mo> </mml:mrow> <mml:mi>ϕ<!-- ϕ --></mml:mi> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mo stretchy="false">|</mml:mo> </mml:mrow> <mml:mo stretchy="false">)</mml:mo> <mml:mi>ϕ<!-- ϕ --></mml:mi> </mml:mrow> <mml:annotation encoding="application/x-tex">\Box \phi +m^2\phi =\beta (|\phi |)\phi</mml:annotation> </mml:semantics> </mml:math> </inline-formula> on <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="double-struck upper R Superscript 1 plus n"> <mml:semantics> <mml:msup> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mi mathvariant="double-struck">R</mml:mi> </mml:mrow> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mn>1</mml:mn> <mml:mo>+</mml:mo> <mml:mi>n</mml:mi> </mml:mrow> </mml:msup> <mml:annotation encoding="application/x-tex">\mathbb {R}^{1+n}</mml:annotation> </mml:semantics> </mml:math> </inline-formula> and are called nontopological solitons. The first preprint provides a new modulational approach to proving the stability of nontopological solitons. This technique, which makes strong use of the inherent symplectic structure, provides explicit information on the time evolution of the various parameters of the soliton. In the second preprint a pseudo-Riemannian structure <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="g underbar"> <mml:semantics> <mml:munder> <mml:mi>g</mml:mi> <mml:mo>_<!-- _ --></mml:mo> </mml:munder> <mml:annotation encoding="application/x-tex">\underline {g}</mml:annotation> </mml:semantics> </mml:math> </inline-formula> is introduced onto <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="double-struck upper R Superscript 1 plus n"> <mml:semantics> <mml:msup> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mi mathvariant="double-struck">R</mml:mi> </mml:mrow> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mn>1</mml:mn> <mml:mo>+</mml:mo> <mml:mi>n</mml:mi> </mml:mrow> </mml:msup> <mml:annotation encoding="application/x-tex">\mathbb {R}^{1+n}</mml:annotation> </mml:semantics> </mml:math> </inline-formula> and the corresponding wave equation is studied. It is shown that under the rescaling <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="g underbar right-arrow epsilon Superscript negative 2 Baseline g underbar"> <mml:semantics> <mml:mrow> <mml:munder> <mml:mi>g</mml:mi> <mml:mo>_<!-- _ --></mml:mo> </mml:munder> <mml:mo stretchy="false">→<!-- → --></mml:mo> <mml:msup> <mml:mi>ϵ<!-- ϵ --></mml:mi> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mo>−<!-- − --></mml:mo> <mml:mn>2</mml:mn> </mml:mrow> </mml:msup> <mml:munder> <mml:mi>g</mml:mi> <mml:mo>_<!-- _ --></mml:mo> </mml:munder> </mml:mrow> <mml:annotation encoding="application/x-tex">\underline {g}\to \epsilon ^{-2} \underline {g}</mml:annotation> </mml:semantics> </mml:math> </inline-formula>, with <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="epsilon right-arrow 0"> <mml:semantics> <mml:mrow> <mml:mi>ϵ<!-- ϵ --></mml:mi> <mml:mo stretchy="false">→<!-- → --></mml:mo> <mml:mn>0</mml:mn> </mml:mrow> <mml:annotation encoding="application/x-tex">\epsilon \to 0</mml:annotation> </mml:semantics> </mml:math> </inline-formula>, it is possible to construct solutions representing nontopological solitons concentrated along a time-like geodesic.

We present a method to measure dominant standard model backgrounds using data containing high rapidity objects in $pp$ collisions at the Large Hadron Collider (LHC). The method is developed for analyses of early LHC data when robustness against imperfections of background modeling and detector simulation can be a key to the discovery of new physics at LHC.

Sexual well-being campaigner David Stuart says nursing staff are well placed to support gay men who have concerns about their use of party drugs in sexual hook-ups

Las investigaciones de las decadas recientes no solo han cambiado nuestras ideas sobre la cultura maya, vista durante mucho tiempo como pacifica. Ahora se sabe que no solo fueron sociedades en constantes enfrentamientos, sino que la guerra entre ellas fue una practica de gran complejidad y con distintas variantes.

E hallazgo de una estela relacionada con la fecha 7 baktun en la cuenta larga confirma que El Trapiche, Chalchuapa, fue la capital del occidente de El Salvador durante el Preclasico Tardio. En el mismo sitio arqueologico se han localizado varias esculturas que muestran el poderio del senorio chalchuapaneco

Abstract The Intermediate Silicon Layers Detector is presently being built as part of the CDF upgrades to prepare for the next Tevatron data taking run, scheduled to start in the year 2000. The ISL will be located in the radial region between the Silicon Vertex Detector and the Central Outer Tracker. It will add tracking in the forward region and significantly improve tracking in the central region. Together with the SVX II, the ISL forms a standalone, 3D silicon tracker. In this article we present the design of the ISL and the current status of its construction.

Searches for the pair production of the supersymmetric partner particles of leptons, quarks, and non-minimal Higgs have been made in e +e − annihilations at center-of-mass energies between 50 and 60.8 GeV using the AMY detector at TRISTAN. No evidence for their existence is observed and 95% CL mass limits are presented.

Transcatheter embolization by Ivalon particles for treatment of arteriovenous malformations has been an accepted therapeutic technique for many years. We describe a new and efficient radiolabeling technique of Ivalon particles using [99mTc]sulfur colloid. Continuous and dynamic monitoring of injected radiolabeled Ivalon particles is made possible by viewing the persistence scope of a portable gamma camera whose head is positioned over the patient undergoing therapeutic embolization. Therefore, if inadvertent pulmonary embolism or reflux migration of radiolabeled Ivalon particles has occurred, the angiographer is immediately aware of this potentially serious or fatal complication and can take corrective action. We describe two patients, each with an arteriovenous malformation, who had therapeutic embolization with radiolabeled Ivalon particles, one resulting in reflux migration and the other resulting in inadvertent pulmonary embolism.

The Intermediate Silicon Layers (ISL) detector is presently being built as part of CDF upgrades. The ISL is a large radius (28 cm) silicon tracker with a total active area of about 3.5 m2. The challenge is to build a device which provides precise 3D points introducing a minimal amount of material for the supporting structure. The design and the status of the project are described.

Chemsex. Ujęcie wielodyscyplinarne Książka została przygotowana przez interdyscyplinarny zespół autorów, wybitnych specjalistów i praktyków. Treści są zbudowane wokół złożonego terminu, jakim jest &#8222;chemsex&#8221;. David Stuart, twórca określenia, podkreśla, że chemsex nie jest definiowany wyłącznie poprzez używanie narkotyków do aktywności seksualnej. Łączenie środków psychoaktywnych z seksem ma długą historię, odbywa się w wielu różnych populacjach, lecz nie zawsze będzie się mieściło w ramach tego pojęcia. W publikacji ciekawie opisano takie zagadnienia jak: definicja i historia zjawiska, rodzaje uzależnień, zdrowie psychiczne i seksualne użytkowników chemsexu, konsekwencje neuropsychologiczne, psychoterapia i farmakoterapia osób uzależnionych, chemsex w różnych populacjach, elementy zdrowia publicznego, redukcja szkód u osób uzależnionych, zakażenie HIV i choroby przenoszone drogą płciową, stany zagrożenia życia i zdrowia oraz postępowanie w objawach ostrej intoksykacji substancjami psychoaktywnymi, aspekty prawne. W publikacji zostały również przedstawione wnioski z badania &#8222;Psychospołeczne uwarunkowania chemsexu&#8221; i &#8222;Badania nad chemsexem w Polsce&#8221;. Książka z pewnością zainteresuje seksuologów, psychiatrów, psychologów, psychoterapeutów, specjalistów chorób zakaźnych, zdrowia publicznego, a także osoby zajmujące się profilaktyką uzależnień i przedstawicieli organizacji pozarządowych. <UL> <LI><a href = "https://images.iformat.pl/8D4B65D7EB/AC708A16-F5DD-4027-AAFA-F09901088A91.epub" download="fragment">Fragment (epub)</a></LI> <LI><a href = "https://images.iformat.pl/8D4B65D7EB/421E7A47-2975-4E27-979E-145134A1C84D.mobi" download="fragment">Fragment (mobi)</a></LI> </UL>

We report on a measurement of the forward-backward charge asymmetry in ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}q\overline{q}$ at KEK TRISTAN, where the asymmetry is near maximum. We sum over all flavors and measure the asymmetry by determining the charge of the quark jets. In addition we exploit flavor dependencies in the jet charge determination to enhance the contributions of certain flavors. This provides a check on the asymmetries of individual flavors. The measurement agrees with the standard model expectations.

The Intermediate Silicon Layers (ISL) detector is being built as part of the Collider Detector at Fermilab (CDF) upgrades for the run II operation of Tevatron. The ISL Space Frame (SF) is a structure that defines the location of the ISL detectors, supports the micro-vertex silicon trackers (SVXII, L00) as well as the beryllium beam pipe. The SF design, project and construction are challenging due to the precision and mechanical stability requirements that must be achieved using a minimum amount of material. The SF is a high-precision light structure made of carbon fiber designed and built at the INFN Pisa and shipped at Fermilab in summer 1999. In this contribution we describe in detail the SF construction phase and the accuracy obtained.

We propose the construction and installation of a layer of silicon microstrips at very small radius. The additional layer would improve track purity and result in more precise and uniform track impact parameter measurements by CDF II with corresponding improvements in high pT b tagging and overall pattern recognition that would result in greater sensitivity to a low mass higgs. It would also improve performance of CDF II for B physics and SUSY searches. The basic readout element would be individual, single sided, axial strip sensors ~10 cm long. A readout pitch of 50 μm is considered along with the possibility of alternating strips for an overall 25 μm pitch to provide hit position resolution of order ‐6 μm. The sensors take advantage of recent LHC designs for high bias voltages that enable good signal-to-noise ratios after extreme radiation doses. Layer 00 would be expected to significantly outlive the innermost layer of SVX II despite a two-fold greater radiation exposure rate. It would thus allow the possibility of extended high pT data taking. It would also provide CDF experience with new radiation hard microstrip detectors that could lead to a straightforward upgrade of the inner layers of SVX II for Run III with minimal downtime. Thus, Layer 00 is the first step toward maximizing CDF II data taking with a commensurate enhancement of the ability of CDF II to detect a low mass higgs or SUSY signal in the pre-LHC era. The overall costs, manpower, and schedule for the construction of Layer 00 are reasonable and achievable within the CDF II upgrade schedule.

Crystallography provides a means of visualizing intact virus particles as well as their isolated constituent proteins and enzymes (1–3) at near-atomic resolution, and is thus an extraordinarily powerful tool in the pursuit of a fuller understanding of the functioning of these simple biological systems. We have already expanded our knowledge of virus evolution, assembly, antigenic variation, and host-cell interactions; further studies will no doubt reveal much more. Although the rewards are enormous, an intact virus structure determination is not a trivial undertaking and entails a significant scaling up in terms of time and resources through all stages of data collection and processing compared to a traditional protein crystallographic structure determination. It is the methodology required for such studies that will be the focus of this chapter. The computational requirements were satisfied in the late 1970s, and when combined with the introduction of phase improvement techniques utilizing the virus symmetry (4,5), the application of crystallography to these massive macromolecular assemblies became feasible. This led to the determination of the first virus structure (the small RNA plant virus, tomato bushy stunt virus), by Harrison and coworkers in 1978 (6). The structures of two other plant viruses followed rapidly (7,8). In the 1980s, a major focus of attention was a family of animal RNA viruses; the Picornaviridae.

The research program of the UCSB high energy physics group encompasses advanced projects in both experimental and theoretical particle physics. This program has been strongly supported by the DOE Office of High Energy Physics for many years. The program addresses questions related to the properties of matter, the fundamental forces of nature, the origin and evolution of the universe, and the nature of spacetime. The mission of the group also has a strong educational component, and the training of physicists in advanced research is a key part of our program.

Kerryne is a Bruce Hall resident in her third year of pursuing a Bachelor of Psychology (Honours).In preparation for her impending

We study nonlinear bound states, or solitary waves, in the Dirac-Maxwell system proving the existence of solutions in which the Dirac wave function is of the form $\phi(x,\omega)e^{-i\omega t}$, $\omega\in(-m,\omega_*)$, with some $\omega_*>-m$, such that $\phi_\omega\in H^1(\mathbb{R}^3,\mathbb{C}^4)$, $\Vert\phi_\omega\Vert^2_{L^2}=O(m-|\omega|)$, and $\Vert\phi_\omega\Vert_{L^\infty}=O(m-|\omega|)$. The method of proof is an implicit function theorem argument based on an identification of the nonrelativistic limit as the ground state of the Choquard equation.

We prove exponential stability theorems of Nekhoroshev type for motion in the neighbourhood of an elliptic fixed point in Hamiltonian systems having an additional transverse component of arbitrary dimension.

We report on measurements of the total cross section for e+e−→γγ for center-of-mass energies between 57.4 and 59.5 GeV, using the AMY detector at the TRISTAN collider. We set new limits on the production of a possible new s-channel resonance decaying into photon pairs.

We present a study of differential two jet ratios in multi-hadronic final states produced by e+e− annihilation in the AMY detector at TRISTAN. The data are compared to the predictions of the next-to-leading logarithm parton-shower (NLL PS) Monte Carlo and the O(αs2) matrix element QCD models. We determine the strong coupling strength αs(57.3 GeV) = 0.130 ± 0.006.

Previous literature explores the many dimensions of homicide investigations, including case and individual characteristics, evidence and investigative activities. However, little research delves into situational characteristics and their relationship to specific homicides, charge severity sought by prosecutors and sentence length given to homicide offenders. The current study sampled homicide cases (N=68) to gather baseline information and data regarding judicial outcomes. Donald Black’s Theory of Moral Time (2011) is tested and utilized as the study’s conceptual framework for the study’s hypotheses.

The R&D efforts of the UCSB Detector R&D program in the 2015--2017 period are reported. These were to develop a liquid scintillator based detector to be used for characterizing radioactive impurities in samples for rapid and effective screening of low background materials for direct dark matter detection experiments; complete engineering and simulation work investigating the feasibility of constructing large detectors in salt caverns; and provide engineering innovation for development of new ideas.

Most studies on chemsex focus on the health risks associated with the practice, whereas less attention has been paid to the perception of sexual gratification.The purpose of this study was to explore the effects of chemsex substances on sexual response, motivations to engage in chemsex and the relationship with sober sex. Thirty-one Italian cisgender MSM involved in sexualized drug use were interviewed and transcripts were thematically analysed. An ad hoc grid exploring sociodemographic data, chemsex sexual experience, motives, and relationships with sober sex was used during telephone-based interviews. Participants showed significant individual differences in how chems may affect their sexual experience. The most reported effects were an increase in sexual desire and subjective arousal, access to higher disinhibition, possible erection and ejaculation difficulties, significant extension of the sexual experience duration, and an intensified perception of intimacy and pleasure. All the positive outcomes of substances on sex creates a great curiosity around chemsex, which is among the primary motives to engage in chemsex for the first time. Over time, other motives may emerge, also connected to substance abuse and craving. Some men reported to be motivated by their partners and friends and to use chemsex to cope with depressive mood/anxiety symptoms, stress and sexual problems. Many differences were reported between chemsex and sober sex. Chemsex seems to embody the idea of transgressive and exciting sex, while sober sex is outlined as a more intimate encounter, that can be significantly affected by performance anxiety. These results offer some new perspectives that may add interesting information to the literature and be fundamental for future prevention and harm-reduction projects. The promotion of safer sexual behaviour should contemplate an in-depth discussion and recognition of both pleasurable and distressing aspects of chemsex sexual experience, its motivations over time and perceived differences with sober sex. none

A survey is given of recent results from searches at the Tevatron for physics beyond the standard model concentrating specifically on searches beyond the traditional supersymmetry signatures.

By this stage of the book information professionals should have a good idea of what data science is, the steps involved, and some of the myriad of tools now available. In this and the next two chapters we look more closely at specific techniques that may be applied by information professionals. First, in this chapter, we look at clustering and social network analysis, before moving on to look at the statistical methods for forecasting in Chapter 6, and finally text analysis and mining in Chapter 7.

The aim of this book is not to introduce programming, but rather to introduce data science in a way that shows that it is not difficult to move away from pre-packaged desktop software and start integrating some programming in your own analyses. This appendix includes more detail on some of the programming concepts used throughout this book, and is designed to try and help absolute beginners look more closely at the code rather than gloss over the code they come across in the book.

Data science is particularly valued for its ability to help predict the future. The desire to predict the future is not new, but while the art of forecasting may have come a long way from divination by chicken bones, it has not necessarily come as far as we might always presume.

We describe a strategy for the iodane-guided functionalization of sterically congested C-H bonds, which is distinct from electronic, steric or proximity guided C-H functionalization methods. Readily accessible aryl(Mes)iodonium salts serve as the starting materials in these reactions and produce complex 1,2,3,4-substituted arenes via aryne intermediates. This approach is especially powerful when coupled with the innate C-H functionalization reactivity of simple arenes, to replace two C-H bonds with two C-C or C-heteroatom bonds while over-riding steric effects that typically inhibit such reactions. DFT stud-ies reveal a contribution of inductive, resonance, and steric effects on the regioselectivity of C-H cleavage and aryne generatation.

An analysis of benzenoid substitution patterns in small molecule active pharmaceutical ingredients (APIs) approved by the FDA reveals a preference for 1,4-substituted (&lt;i&gt;para&lt;/i&gt;), 1-substituted (&lt;i&gt;mono&lt;/i&gt;), 1,2,4-substituted, and 1,2-substituted (&lt;i&gt;ortho&lt;/i&gt;) arenes. Notably, these substitution patterns are widely commercially available and readily accessible by electrophilic aromatic substitution (S&lt;sub&gt;E&lt;/sub&gt;Ar), but more highly substituted and contra-electronic substitution patterns are severely underrepresented in drug substances. Finally, structural variation decreases with increasing substitution and there is a strong reliance on natural product scaffolds in drugs with more highly substituted benzenoid rings.

Results of a search for the pair production of charged heavy leptons in e + e − annihilations over the center-of-mass energy range of 50 to 60.8 GeV are reported. We assume that the leptons are of the sequential type but have allowed for the case where the associated neutrino might be massive. Separate searches for evidence for decays to hadronic and leptonic final states, searches specialized for the case where the charged lepton and its associated neutrino are close in mass, and a search for stable heavy leptons have uncovered no evidence for the production of such particles at these energies. Mass limits for heavy leptons and their associated neutrinos are determined for a range of hadronic and leptonic decay branching fractions. A sequential charged heavy lepton with mass between 12.6 and 29.6 GeV/c 2 and with massless neutrino is excluded at the 95% confidence level.

A search for the pair production of charged Higgs particles decaying via the H−→τν¯ mode has been made in e+e− annihilations at center-of-mass energies between 50 and 60.8 GeV using the AMY detector at the KEK collider TRISTAN. No evidence for their existence is observed and 95%-C.L. mass limits are presented. The result has been interpreted in terms of the tanβ parameter in the Higgs sector.Received 27 February 1990DOI:https://doi.org/10.1103/PhysRevD.42.949©1990 American Physical Society

The standard model predictions for W and Z production are tested using an integrated luminosity of 200 pb of pp collision data collected at the Collider Detector at Fermilab. The cross sections are measured by selecting leptonic decays of the W and Z bosons, and photons with transverse energy E > 7 GeV that are well separated from leptons. The production cross sections and kinematic distributions for the W and Z data are compared to SM predictions. © 2005 The American Physical Society.

The Run IIa CDF Silicon Upgrade has recently finished installation. The detector uses revision D of the SVX3 readout IC. This final revision incorporated new features in order to improve the potential of dead-timeless operation. This paper describes measurements of dead-timeless effects on silicon strip readout on the test bench. This paper also describes tests of the dynamic pedestal subtraction circuitry, which is shown to improve greatly the dead-timeless performance of the silicon systems.

The prospects for discovering and studying signals of low-scale supersymmetry breaking models at the Tevatron Run II and beyond are explored. These models include gauge-mediated supersymmetry breaking as the most compelling and concrete realization, but more generally are distinguished by the presence of a nearly massless Goldstino as the lightest supersymmetric particle. The next-lightest supersymmetric particle(s) (NLSP) decays to its partner and the Goldstino. Depending on the supersymmetry breaking scale, these decays can occur promptly or on a scale comparable to or larger than the size of a detector. A systematic analysis based on a classification in terms of the identity of the NLSP and its decay length is presented. The various scenarios are discussed in terms of signatures and possible event selection criteria. The Run II and beyond discovery and exclusion reaches, including the effects of background, are detailed for the most compelling cases. In addition to standard event selection criteria based on missing energy and photons, leptons, jets, taus, tagged b-jets, or reconstructed Z-bosons, more exotic signals of metastable NLSPs such as displaced photons, large negative impact parameter tracks, kink tracks, both opposite and same-sign highly ionizing tracks, time of flight measurements, charge-changing tracks, charge-exchange tracks, and same-sign di-top events are investigated. The interesting possibility of observing a Higgs boson signal in events that are efficiently "tagged" by the unique signatures of low-scale supersymmetry breaking is also considered.