gebhart/patrepeval huggingface dataset:
Publisher Erratum: Open charm production and asymmetry in pNe collisions at $$\sqrt{s_{\scriptscriptstyle {\text {NN}}}} = 68.5$$ GeV (2023)

In this article footnote 38 was incorrectly listed as 38: Affiliated with an Institute Covered by a Cooperation Agreement with CERN, ICCUB, Universitat de Barcelona, Barcelona, Spain Two footnotes were merged into one. The correct footnotes should be: 38: Affiliated with an Institute Covered by a Cooperation Agreement with CERN 39: ICCUB, Universitat de Barcelona, Barcelona, Spain The original article has been corrected. The publisher apologizes for the inconvenience caused.
ChemInform Abstract: The Latest Progress on Electron Transfer in Macromolecule—Metal Complexes and Future Scope of MMC (2001)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Isotopomeric Ion (2016)

This document contains recommendations for terminology in mass spectrometry. Development of standard terms dates back to 1974 when the IUPAC Commission on Analytical Nomenclature issued recommendations on mass spectrometry terms and definitions. In 1978, the IUPAC Commission on Molecular Structure and Spectroscopy updated and extended the recommendations and made further recommendations regarding symbols, acronyms, and abbreviations. The IUPAC Physical Chemistry Division Commission on Molecular Structure and Spectroscopy’s Subcommittee on Mass Spectroscopy revised the recommended terms in 1991 and appended terms relating to vacuum technology. Some additional terms related to tandem mass spectrometry were added in 1993 and accelerator mass spectrometry in 1994. Owing to the rapid expansion of the field in the intervening years, particularly in mass spectrometry of biomolecules, a further revision of the recommendations has become necessary. This document contains a comprehensive revision of mass spectrometry terminology that represents the current consensus of the mass spectrometry community.
ChemInform Abstract: SYNTHESIS OF NEW FULVENES CONTAINING HETEROCYCLIC SUBSTITUENTS (1982)

Abstract Cyclopentadien (I) reagiert über das mit Butyllithium erhaltene Lithium‐cyclopentadienid (II) mit den Ketonen (III) zu den Fulvenen (IVa)‐(IVc); (IVc) wird zu (IVd) quaterniert.
Telemedicine and Eye Examinations for Diabetic Retinopathy (2015)

Our website uses cookies to enhance your experience. By continuing to use our site, or clicking "Continue," you are agreeing to our Cookie Policy | Continue JAMA Ophthalmology HomeNew OnlineCurrent IssueFor Authors Podcast Publications JAMA JAMA Network Open JAMA Cardiology JAMA Dermatology JAMA Health Forum JAMA Internal Medicine JAMA Neurology JAMA Oncology JAMA Ophthalmology JAMA Otolaryngology–Head & Neck Surgery JAMA Pediatrics JAMA Psychiatry JAMA Surgery Archives of Neurology & Psychiatry (1919-1959) JN Learning / CMESubscribeJobsInstitutions / LibrariansReprints & Permissions Terms of Use | Privacy Policy | Accessibility Statement 2023 American Medical Association. All Rights Reserved Search All JAMA JAMA Network Open JAMA Cardiology JAMA Dermatology JAMA Forum Archive JAMA Health Forum JAMA Internal Medicine JAMA Neurology JAMA Oncology JAMA Ophthalmology JAMA Otolaryngology–Head & Neck Surgery JAMA Pediatrics JAMA Psychiatry JAMA Surgery Archives of Neurology & Psychiatry Input Search Term Sign In Individual Sign In Sign inCreate an Account Access through your institution Sign In Purchase Options: Buy this article Rent this article Subscribe to the JAMA Ophthalmology journal
High gain active microstrip antenna for 60 GHz WLAN (2005)

A 60 GHz design comprising a three-stage pHEMT amplifier integrated with a high gain antenna on an alumina substrate is presented. The amplifier has 18 dB gain, and the antenna a directivity of 14 dBi. The amplifier is ribbon bonded to the substrate on which the antenna is etched. The antenna is a microstrip array antenna with a simple etched pattern for producibility at high frequencies. Mechanical simplicity is achieved with this design, and unnecessary transitions are avoided.
Process Mediation (2011)

In this chapter the problem of interoperability of incompatible business processes consisting of semantically annotated Web services is addressed, proposing a (semi-) automated solution, called process mediation, that analyzes the potentially incompatible process models of service requesters and service providers, identifying all incompatibilities, and automatically synthesizing reconciliation plans that can be used at runtime for resolving the identified incompatibilities. Compared to the previous research, the main novelty of this work is its strong focus on dynamic scenarios common for process-based service-oriented systems operating in open or semi-open dynamic environments. The chapter covers techniques for automated incompatibilities detection and resolution, service discovery in the process mediation context, techniques for monitoring, and techniques for fault handling and recovery. Finally, it discusses the lessons learned and provides an outlook for future research directions.
Heterogeneity of Leukotriene C 4 Production by Eosinophils from Asthmatic and from Normal Subjects (1988)

We evaluated the formation of leukotriene C4 (LTC4) by peripheral blood eosinophils of different densities obtained from asthmatic and normal subjects. When stimulated with 1 microgram/ml of the calcium ionophore A23187 for 15 min at 37 degrees C, eosinophils with densities greater than 1.093 g/ml from asthmatic and normal subjects released 19.1 +/- 4.2 ng LTC4/10(6) eosinophils and 23.9 +/- 5.0 ng LTC4/10(6) eosinophils, respectively. In contrast, lower density eosinophils (densities 1.093 g/ml or less) isolated from the asthmatic subjects released significantly less LTC4 than did eosinophils of similar densities from normal subjects (41.6 +/- 3.0 versus 79.0 +/- 6.7 ng LTC4/10(6) eosinophils, p less than 0.05). Differences could not be demonstrated between the two subject groups in LTC4 metabolism, time course of extracellular release of LTC4, or dose response to A23187, nor were interactions between eosinophils and neutrophils with regard to LTC4 release evident. Thus, hypodense eosinophils elaborate greater quantities of LTC4 than do eosinophils of normal density whether obtained from normal or asthmatic subjects. However, the finding that peripheral blood eosinophils from asthmatic subjects have decreased capacity for the synthesis of LTC4 compared with cells of similar densities isolated from normal subjects demonstrates that the capacity of eosinophils to produce LTC4 is regulated by factors that are not necessarily reflected in the cell density.
Effect of Back-EMF Constraints on Fractional-slot Surface PM Machines Designed for Wide Constant-power Speed Range Operation (2008)

Abstract This article investigates the tradeoffs that result from constraining the back-emf at maximum speed for fractional-slot surface permanent magnet (SPM) machines. Two 55 kW (peak) SPM machines designed to meet requirements established in the US FreedomCar program are used as the basis for this investigation. The two machines are 36-slot/30-pole SPM fractional-slot concentrated-winding designs that use sintered NdFeB magnets. The first design has no back-emf constraint at maximum speed, allowing it to exceed the 600 V pk l-l limit, while the second design has been designed to meet this requirement. Results of this study show that the introduction of back-emf limits can lead to significant increases in the SPM machine's rated current, with only a modest impact on the machines mass and volume. A combination of closed-form analysis and finite element analysis is used to carry out this investigation.
Synthesis of 6-(2-thienyl)purine nucleoside derivatives toward the expansion of the genetic code (2000)

Unnatural bases specifically pairing with pyridin-2-one, 2-amino-6-(2-thienyl) purine and 2-amino-6-(2-furanyl)purine, were newly designed to replace 2-amino-6-(N,N-dimethylamino)purine. It was expected that these novel purine analogues, as compared with 2-amino-6-(N,N-dimethylamino)purine, might reduce the interference in the stacking interactions with the neighboring bases in a duplex and improve the efficiency of the enzymatic incorporation of the nucleoside triphosphate of pyridin-2-one opposite these unnatural bases. The syntheses of these nucleoside derivatives and the DNA fragments were examined.
Media-aware and Quality-guaranteed Rate Adaptation Algorithm for Scalable Video Streaming (2009)

We propose a quality guaranteed scalable video streaming service over the Internet using a new rate adaptation algorithm. Because video data requires much more bandwidth rather than other types of service, therefore, quality of video streaming service should be guaranteed while providing friendliness with other service flows over the Internet. To successfully provide this, we propose a framework for providing quality-guaranteed streaming service using two-channel transport layer and rate adaptation of scalable video stream. In this framework, baseline layer for scalable video is transmitted using TCP transport for minimum qualify service. Enhancement layers are delivered using TFRC transport with layer adaptation algorithm. The proposed framework jointly uses the status of playout buffer in the client and the encoding rate of layers in media contents. Therefore, the proposed algorithm can remarkably guarantee minimum quality of streaming service rather than conventional approaches regardless of network congestion and the encoding rate variation of media content.
Novel Transformerless High Voltage Gain DC-DC Converter for Solar PV applications (2020)

Due to resistance of power switches, rectifier diodes, equivalent series resistance (ESR) of capacitors and inductors, providing high step-up gains is difficult in Conventional boost converters. In this paper, a transformer-less high gain dc-dc converter is proposed to obtain high step-up voltage gain with nominal or reduced duty ratios. The proposed converter has two inductors of same value which are charged in parallel in one period and when all switches are OFF they will discharge in series with the source to the load. The voltage gain equation of the proposed converter in continuous conduction mode (CCM) is extracted. Then, the critical capacitance, critical inductance, and voltage stresses are calculated. Different topologies are discussed and compared with the proposed converter. The average modelling and the small signal analysis of the converter is discussed in detail. A type-III controller/compensator is designed for making the system stable and for making output voltage constant for an input range of 10-30V. The closed loop simulation of the converter is done by using MATLAB and obtained results are shown.
Assessment of Nominal Ionosphere Spatial Decorrelation for LAAS (2006)

The authors would like to thank Todd Walter (Stanford),Jason Rife (Stanford), Ming Luo (Stanford), Juan Blanch (Stanford), Boris Pervan (IIT), Livio Gratton (IIT), and John
Warburton (FAA Technical Center) for their help during this research. We also would like to express special thanks to Attila Komjathy at JPL for providing data and comments. The advice and interest of many other people in the Stanford GPS research group is appreciated, as is funding support
from the FAA Satellite Navigation Program Office. The opinions discussed here are those of the authors and do not necessarily represent those of the FAA, the GPS Joint
Program Office, or other affiliated agencies.
Diagnosis of Neoplasia in Barrett&#8217;s Esophagus using Vital-dye Enhanced Fluorescence Imaging (2014)

The ability to differentiate benign metaplasia in Barrett’s Esophagus (BE) from neoplasia in vivo remains difficult as both tissue types can be flat and indistinguishable with white light imaging alone. As a result, a modality that highlights glandular architecture would be useful to discriminate neoplasia from benign epithelium in the distal esophagus. VFI is a novel technique that uses an exogenous topical fluorescent contrast agent to delineate high grade dysplasia and cancer from benign epithelium. Specifically, the fluorescent images provide spatial resolution of 50 to 100 μm and a field of view up to 2.5 cm, allowing endoscopists to visualize glandular morphology. Upon excitation, classic Barrett’s metaplasia appears as continuous, evenly-spaced glands and an overall homogenous morphology; in contrast, neoplastic tissue appears crowded with complete obliteration of the glandular framework. Here we provide an overview of the instrumentation and enumerate the protocol of this new technique. While VFI affords a gastroenterologist with the glandular architecture of suspicious tissue, cellular dysplasia cannot be resolved with this modality. As such, one cannot morphologically distinguish Barrett’s metaplasia from BE with Low-Grade Dysplasia via this imaging modality. By trading off a decrease in resolution with a greater field of view, this imaging system can be used at the very least as a red-flag imaging device to target and biopsy suspicious lesions; yet, if the accuracy measures are promising, VFI may become the standard imaging technique for the diagnosis of neoplasia (defined as either high grade dysplasia or cancer) in the distal esophagus.
Bottom to in-plane grating coupler with high coupling efficiency and directionality (2019)

Here, we have presented the first design of a bottom to in-plane grating coupler with a high coupling efficiency and directionality. The grating coupler consists of a high contrast grating (HCG) and an etched silicon-on-insulator (SOI) grating device. The final coupling efficiency is 82.2% at 1.55µm, with a 57nm 3dB bandwidth, and the directionality is 14:1 (left to right ratio). This grating coupler can be further optimized with different low index materials. This grating coupler could work as the vertical to in-plane coupler for the label free silicon photonic bio-sensor.
An AAV9 coding for frataxin clearly improved the symptoms and prolonged the life of Friedreich ataxia mouse models (2020)

Friedreich ataxia (FRDA) is a genetic disease due to increased repeats of the GAA trinucleotide in intron 1 of the frataxin gene. This mutation leads to a reduced expression of frataxin. We have produced an adeno-associated virus (AAV)9 coding for human frataxin (AAV9-hFXN). This AAV was delivered by intraperitoneal (IP) injection to young conditionally knockout mice in which the frataxin gene had been knocked-out in some tissues during embryogenesis by breeding them with mice expressing the Cre recombinase gene under the muscle creatine kinase (MCK) or the neuron-specific enolase (NSE) promoter. In the first part of the study, different doses of virus were tested from 6 × 1011 v.p. to 6 × 109 v.p. in NSE-cre mice and all leading to an increase in life spent of the mice. The higher and the lower dose were also tested in MCK-cre mice. A single administration of the AAV9-hFXN at 6 × 1011 v.p. more than doubled the life of these mice. In fact the MCK-cre mice treated with the AAV9-hFXN were sacrificed for further molecular investigations at the age of 29 weeks without apparent symptoms. Echography analysis of the heart function clearly indicated that the cardiac systolic function was better preserved in the mice that received 6 × 1011 v.p. of AAV9-hFXN. The human frataxin protein was detected by ELISA in the heart, brain, muscles, kidney, and liver with the higher dose of virus in both mouse models. Thus, gene therapy with an AAV9-hFXN is a potential treatment of FRDA.
Internal dynamics of transfer ribonucleic acid determined by nuclear magnetic resonance of carbon-13-enriched ribose carbon 1 (1983)

Carbon-13 enrichment of the C1' position of the ribose moiety in Escherichia coli tRNA has made possible the detailed study of motion in this molecule. Enrichment was accomplished in vivo with a strain, M1R, selected for growth and degree of incorporation of ribose in a stringently defined minimal medium. Purine biosynthesis de novo was blocked with 6-mercaptopurine. Exogenously provided [1-13C]ribose and nucleobases were utilized via the salvage pathway and were required for growth of culture. Carbon-13-enriched transfer RNA in solution at 30 degrees C exhibited a prominent, broad, asymmetric NMR signal at 91.5 ppm for the C1' carbon. Upon heat denaturation of the tRNA, three C1' signals were resolved and could be attributed to the base-specific nucleotides in tRNA: uridine and guanosine at 88.7 ppm; adenosine at 89.5 ppm; and cytidine at 90.6 ppm. Ribose C3' and C5' were partially enriched due to scrambling of ribose carbons in vivo. The minimum net isotopic enrichment of C1' was 33%. Values for the relaxation time T1 and the nuclear Overhauser enhancement (NOE) at 75.5, 67.8, and 25.2 MHz (13C), the NOE at 50.3 MHz, T2 at 75.5 MHz, and line widths over the range of 20-75.5 MHz were analyzed in light of several models for internal motion in macromolecules. The data were inconsistent with physically unreasonable constructs involving free internal diffusion of the C1'-H vector about the glycosidic bond. Internal diffusion (wobble) within a cone or jumps between states were models that did fit the data. For diffusion within a cone, the cone half-angle was 15-20 degrees, with a correlation time of about 2 X 10(-9) s for internal reorientation. With the two-state jump model, the half-angle for jumps about the glycosidic bond was 14 +/- 2 degrees with a lifetime of 2 X 10(-9) s.
Origins of Lithium/Sodium Reverse Permeability Selectivity in 12-Crown-4-Functionalized Polymer Membranes (2021)

Direct lithium extraction via membrane separations has been fundamentally limited by lack of monovalent ion selectivity exhibited by conventional polymeric membranes, particularly between sodium and lithium ions. Recently, a 12-Crown-4-functionalized polynorbornene membrane was shown to have the largest lithium/sodium permeability selectivity observed in a fully aqueous system to date. Using atomistic molecular dynamics simulations, we reveal that this selectivity is due to strong interactions between sodium ions and 12-Crown-4 moieties, which reduce sodium ion diffusivity while leaving lithium ion mobility relatively unaffected. Moreover, the ion diffusivities in the membrane, when scaled by their respective solution diffusivities and free ion fractions, can be collapsed to an almost universal relationship depending on solvent volume fraction.
Gene Delivery Using Ultrasound Contrast Agents (2001)

With the human genome product and continuing advances in molecular biology many therapeutic genes have been discovered. In the cardiovascular system, gene therapy has the potential to improve myocardial vascularization and ameliorate congestive heart failure. For successful development of clinical gene therapy, however, effective gene delivery vectors are needed. Ultrasound contrast agents can be used to develop new, more effective vectors for gene delivery. Ultrasound contrast agents lower the threshold for cavitation by ultrasound energy. Using physical properties of microbubbles and coating materials, genetic drugs have been incorporated into ultrasound contrast agents. Gene-bearing microbubbles can be injected IV and ultrasound energy applied to the target region. As the microbubbles enter the region of insonation, the microbubbles cavitate, locally releasing DNA. Cavitation also likely causes a local shockwave that improves cellular uptake of DNA. With transthoracic ultrasound, using commercially available diagnostic ultrasound system and an IV injection of gene-bearing microbubbles, high levels of transgene expression are observed in the insonated region of the myocardium. This new technology using microbubbles and ultrasound for gene delivery merits further study and development.
Rigidly Foldable Quadrilateral Meshes From Angle Arrays (2017)

We present a design technique for generating rigidly foldable quadrilateral meshes, taking as input four arrays of direction angles and fold angles for horizontal and vertical folds. By starting with angles, rather than vertex coordinates, and enforcing the fold-angle-multiplier condition at each vertex, it is possible to achieve arbitrarily large and complex panel arrays that flex from unfolded to flatly folded with a single degree of freedom. Furthermore, the design technique is computationally simple, reducing for some cases to a simple linear programming problem. The resulting mechanisms have applications in architectural facades, furniture design, and more.
Reaction of N-Acylated Isofebrifugine with Acid (2000)

The reaction of N-acylated isofebrifugine with hydrochloric acid is discussed.Although the corresponding deprotected compound was not isolated, three new heterocyclic compounds were obtained.Based on these findings, new furan and pyrrole derivatives were prepared.Febrifugine (d-1) is an antimalarial agent that was isolated from Dichroa febrifuga and Hydrangea umbellata
A Second-Order Method for Convex $\ell_1$-Regularized Optimization with Active Set Prediction (2015)

We describe an active-set method for the minimization of an objective function $ϕ$ that is the sum of a smooth convex function and an $\ell_1$-regularization term. A distinctive feature of the method is the way in which active-set identification and {second-order} subspace minimization steps are integrated to combine the predictive power of the two approaches. At every iteration, the algorithm selects a candidate set of free and fixed variables, performs an (inexact) subspace phase, and then assesses the quality of the new active set. If it is not judged to be acceptable, then the set of free variables is restricted and a new active-set prediction is made. We establish global convergence for our approach, and compare the new method against the state-of-the-art code LIBLINEAR.
Least-material optimization of vertical pin-fin, plate-fin, and triangular-fin heat sinks in natural convective heat transfer (2002)

A least-material optimization of pin-fin, plate-fin, and triangular-fin array geometries is performed, by extending the use of least-material single fin analysis to multiple fin arrays. The heat dissipation from vertical fin arrays in natural convection is calculated using the Nusselt number correlation by Aihara et al. (Int. J. Heat and Mass Transfer vol. 33, no. 6, pp. 1223-32, 1990) for pin-fins, by Bar-Cohen and Rohsenow (Trans IEEE CHMT vol. 6, pp. 154-8, 1983) for rectangular plate fins, and by Karagiozis et al (Air, vol. 116, pp. 105-11, 1994) for triangular plate fins. Comparisons of the thermal capability of the three different array geometries are carried out on the basis of total heat dissipation and material-specific volumetric heat dissipation. Manufacturability constraints of these heat sinks, and their effects on the final design, are briefly discussed.
Diaphragm Pacing as a Rehabilitative Tool for Patients With Pompe Disease Who Are Ventilator-Dependent: Case Series (2016)

The findings are consistent with the view that diaphragm pacing has potential rehabilitative value to reduce reliance on mechanical ventilation in people with Pompe disease, but further study is needed. Diaphragm pacing represents a paradigm shift in the management of respiratory insufficiency for Pompe disease that warrants further controlled examination.
A meaningful legacy: urologists as Nobel Prize laureates. (2003)

The distinguished accomplishments of these two great urologists exemplify the highest level of excellence in science for the entire surgical and urological community. Furthermore, today's breakthroughs in molecular medicine represent an extremely appealing challenge for the new generation of scientists and clinicians.