gebhart/patrepeval huggingface dataset:
Parallel program performance metrics: a comparison and validation (1992)

The authors present a novel technique, called true zeroing, that permits direct, quantitative, and fair comparison of parallel program performance metrics. This technique was applied to three programs that include both numeric and symbolic applications. Three existing metrics, Gprof, Critical Path, and Quartz/NPT, and several new variations were compared. The result of this comparison was that while Critical Path provided the best overall guidance, it was not universally better than the other metrics. Because there is no single universal metric, future parallel performance systems need to support multiple metrics. The authors present a set of recommendations to tool builders based on the experience gained during this case study. >
MEK inhibits secretin release and pancreatic secretion: roles of secretin-releasing peptide and somatostatin (2001)

We investigated the mechanism of action of methionine enkephalin (MEK) on HCl-stimulated secretin release and pancreatic exocrine secretion. Anesthetized rats with pancreatobiliary cannulas and isolated upper small intestinal loops were perfused intraduodenally with 0.01 N HCl while bile and pancreatic juice were diverted. The effect of intravenous MEK on acid-stimulated secretin release and pancreatic exocrine secretion was then studied with or without coinfusion of naloxone, an anti-somatostatin (SS) serum, or normal rabbit serum. Duodenal acid perfusate, which contains secretin-releasing peptide (SRP) activity, was collected from donor rats with or without pretreatment with MEK, MEK + naloxone, or MEK + anti-SS serum, concentrated by ultrafiltration, and neutralized. The concentrated acid perfusate (CAP), which contains SRP bioactivity, was infused intraduodenally into recipient rats. MEK increased plasma SS concentration and inhibited secretin release and pancreatic fluid and bicarbonate secretion dose-dependently. The inhibition was partially reversed by naloxone and anti-SS serum but not by normal rabbit serum. In recipient rats, CAP increased plasma secretin level and pancreatic secretion. CAP SRP bioactivity decreased when it was collected from MEK-treated donor rats; this was partially reversed by coinfusion with naloxone or anti-SS serum. These results suggest that in the rat, MEK inhibition of acid-stimulated pancreatic secretion and secretin release involves suppression of SRP activity release. Thus the MEK inhibitory effect appears to be mediated in part by endogenous SS.
ChemInform Abstract: An Expedient One‐Pot Synthesis for Protected 2‐Thia‐5‐azabicyclo(2.2.1) heptan‐3‐ones. Versatile Intermediates in the Synthesis of Carbapenem Side Chains. (1996)

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.
Errata: Simulation of mechanical rotation by optical rotation: Application to the design of a new Fourier photopolarimeter (1978)

Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text R. M. A. Azzam, "Errata: Simulation of mechanical rotation by optical rotation: Application to the design of a new Fourier photopolarimeter," J. Opt. Soc. Am. 68, 1292-1292 (1978) Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article
Theoretical and Experimental Investigation of Frictional and Thermal Behavior in Oscillatory Sliding Line Contact -- Pin-Bushing Thermal Model -- (2005)

A model is developed to predict the thermal behavior of two sliding bodies undergoing oscillatory relative motio n. The thermal model is capable of predicting the temperature rise distribution within the pin-bushing pair and the housing. The bodies geometrically form a pin-bushing configuration and the Hertzian line contact theory is us ed to approximate the contact pressure and the width. A quasithree dimensional temperature model is developed by averaging the temperature in the axial direction. The resulting dimensionless heat equations and proper boundary conditions are solved by the finite element method . A test rig capable of oscillatory motion under heavy loading is used for measuring friction and temperature. The measure d coefficient of friction history, which is curve fit as a function of time, is used in the simulations. The desc ription of the test rig, modeling aspects, and the future extensi on of the research are presented.
Optimization of Cost Efficient Multilevel-ASK Modulation Formats under the Constraint of Chromatic Dispersion (2010)

Due to their narrow spectrum, multilevel modulation ASK-formats can increase the chromatic dispersion tolerance of optical systems. Since they suffer more from inter-symbol interference than binary signals, optimization of the amplitude levels is necessary.
Correlation between Laminin-5 γ2 Chain Expression and Epidermal Growth Factor Receptor Expression and Its Clinicopathological Significance in Squamous Cell Carcinoma of the Tongue (2002)

Recent investigations have revealed that growth factors may influence the invasive activity of tumor cells. Expression of laminin-5 gamma2 chain (LN-5 gamma2) and epidermal growth factor receptor (EGFR) in squamous cell carcinomas of the tongue in 104 patients with stage II, III, and IVA, B (excluding the cases with distant metastasis) was examined immunohistochemically to determine the correlation between the two molecules and the associations with the clinicopathological features of each tumor. LN-5 gamma2 expression was clearly demonstrated in the cytoplasm and EGFR in the cell membranes of cancer cells. A significant increase in positivity for LN-5 gamma2 was observed in tumors showing poor differentiation (p < 0.001), infiltrative growth (p < 0.001), and deep invasion (p = 0.038). In a multivariate analysis, increased positivity for LN-5 gamma2 was an independent predictor of an unfavorable outcome (p < 0.001). A significant increase in positivity for EGFR was observed in tumors showing infiltrative growth (p = 0.032) and poor prognosis (p = 0.008). The LN-5 gamma2 expression was correlated significantly with EGFR expression (p < 0.001). Patients with tumor positivity for both molecules showed the worst prognosis (p < 0.001). LN-5 gamma2 overexpression and EGFR overexpression is evident in tumors showing infiltrative growth, suggesting that EGFR may influence the invasive activity of tumor cells through overexpression of LN-5 gamma2.
Synthese und Eigenschaften offenkettiger und cyclischer 1 λ<sup>3</sup>,3λ<sup>3</sup>‐Diphosphaalkane RR′PCH<sub>2</sub>PR′R (1986)

Abstract Die als Synthesebausteine gesuchten, disekundären Methylendiphosphane RP(X)CH 2 P(X)R (X = H, Cl) mit wählbarer Plus/Minus‐Polung wurden durch gezielte Substitutionsreaktionen am Methylenbis(dichlorphosphan) ( 1 ) dargestellt. Durch Einwirkung von zwei Äquivalenten Lithiumisopropylat, gefolgt von zwei Äquivalenten Phenylmagnesiumchlorid, entsteht Methylenbis(isopropoxyphenylphosphan) ( 2 ), welches mit Lithiumalanat Methylenbis(phenylphosphan) ( 3 ) ergibt. Mit Diethylamin und Phenyllithium entsteht aus 1 das Methylenbis[(diethylamino)phenylphosphan] ( 6 ), aus dem dann mit HCl Methylenbis(chlorphenylphosphan) ( 5 ) gebildet wird. Das doppelt lithiierte Phosphan 3 ergibt mit α,ω‐Dichloralkanen die Phosphacyclen 1,3‐Diphenyl‐1,3‐diphospholan ( 7a , b ), ‐diphosphorinan ( 8a , b ) und ‐diphosphepan ( 9a , b ), die jeweils in zwei isomeren Formen vorkommen. Durch Komplexierung an Platin(II)‐Salze können die Diastereomeren 8a und 8b separiert werden. Der Strukturbeweis für die diastereomeren Phosphane erfolgt über die NMR‐Spektren.
TERNARY SYSTEMS. X. MAGNESIUM IODATE, MAGNESIUM NITRATE AND WATER (1931)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTERNARY SYSTEMS. X. MAGNESIUM IODATE, MAGNESIUM NITRATE AND WATERArthur E. Hill and Samuel. MoskowitzCite this: J. Am. Chem. Soc. 1931, 53, 3, 941–946Publication Date (Print):March 1, 1931Publication History Published online1 May 2002Published inissue 1 March 1931https://pubs.acs.org/doi/10.1021/ja01354a014https://doi.org/10.1021/ja01354a014research-articleACS PublicationsRequest reuse permissionsArticle Views57Altmetric-Citations8LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts
Micellen als chemische Nano‐Laboratorien (2016)

Zusammenfassung Das Konzept, chemische Lehr‐Versuche zu einem aktuellen Forschungsgebiet ohne Einsatz jeglicher Gefahrstoffe zu entwickeln, hat zu beladenen nanomicellaren Strukturen in Wasser mit potentieller Verwendung in der Kosmetik geführt, etwa für Sonnenschutz und der Behandlung von Sonnenbrand. Solche micellaren Systeme in Wasser können „Nano‐Laboratorien“ bilden, z.B. um lipophile funktionale Substanzen auch in Wasser einsetzen zu können. Dies wurde am Beispiel von Fluoreszenzfarbstoffen und pH‐Indikatoren demonstriert. Schließlich wurden supramolekulare Funktionaleinheiten in solchen Strukturen stabilisiert und zur Funktion gebracht. Solche Micellen lassen sich vielfältig für Versuche in der chemischen Grundausbildung bis zur Ausbildung von fortgeschrittenen Studenten verwenden.
Correlation of physical and genetic maps of human chromosome 16 (1990)

This project is now progressing strongly. Thirteen somatic cell hybrids containing rearranged {number sign}16 chromosomes have been constructed, bringing the total number of hybrids constructed by the group to 27 which divides chromosome 16 into 29 regions. 170 probes have been mapped into these regions. Although this is the second progress report for this contract it essentially contains all the work carried out since the first progress report covered a period of less than three months during which little had been done other than setting up. The project has been progressing very well and has led to numerous collaborations with other groups involved in mapping this chromosome or studying genes on it. 7 refs., 1 fig., 2 tabs.
A Wide-Dynamic-Range Photodiode-Type Active Pixel Sensor Cell with Seamlessly Combined Logarithmic–Linear–Logarithmic Response (2007)

A wide-dynamic-range photodiode-type (PD) active pixel sensor (APS) cell with seamlessly combined logarithmic–linear–logarithmic response is proposed for the first time and its operation is verified by circuit simulation. It has two additional metal–oxide–semiconductor field-effect transistors (MOSFETs) stacked in parallel to the reset MOSFET of conventional three-transistor (3-Tr) PD APS cells. By utilizing our previously proposed operation scheme that achieves automatic linear–logarithmic response switching, the proposed 5-Tr APS cell realizes seamlessly combined logarithmic–linear–logarithmic response.
Urolithiasis, Endourology and Laparoscopy (2002)

No AccessJournal of UrologyUROLOGICAL SURVEY: ABSTRACTS1 Nov 2002Urolithiasis, Endourology and Laparoscopy Ralph V. ClaymanM.D. Ralph V. ClaymanRalph V. Clayman More articles by this author View All Author Informationhttps://doi.org/10.1016/S0022-5347(05)64378-9AboutFull TextPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail References 1 : Survey of neuromuscular injuries to the patient and surgeon during urologic laparoscopic surgery. Urology2000; 55: 831. Google Scholar © 2002 by American Urological Association, Inc.FiguresReferencesRelatedDetails Volume 168Issue 5November 2002Page: 2325-2332 Advertisement Copyright & Permissions© 2002 by American Urological Association, Inc.MetricsAuthor Information Ralph V. Clayman More articles by this author Expand All Advertisement PDF DownloadLoading ...
Inferenzschlüsse im metrischen Regressionsmodell (1979)

Bei der Betrachtung eines Regressionsmodells sind stets zwei Fragen von besonderem Interesse. Zum einen die Frage, wie gut das Modell insgesamt den empirischen Befund beschreibt — hierbei ist stets ein Kompromiß zwischen den konfligierenden Ansprüchen von Einfachheit einerseits und Genauigkeit andererseits zu finden — und zum zweiten die Frage, welchen individuellen Beitrag die einzelnen Merkmale liefern. Diese zweite Frage ist insbesondere auch für den Suchprozeß nach einem ‘besten Modell’ wichtig. Deskriptiv können wir die Güte des Modells insgesamt — oder Gesamterklärungskraft — durch den Determinationskoeffizienten messen, während die Beiträge der einzelnen Variablen zum Beispiel durch den Zuwachs im Determinationskoeffizienten bestimmt werden können. Wie wir anhand von (2.22) gesehen haben, ist dieser Zuwachs mit den Beta-Koeffizienten der unabhängigen Merkmale verbunden. Im allgemeinen Fall ist diese Beziehung zwar nicht proportional, aber es gilt immer, daß der Zuwachs im Determinationskoeffizienten Null ist, wenn der Beta-Koeffizient Null ist, und umgekehrt.
Transition Metal Complexes Containing Phosphenium and Phosphite Ligands: Formation and Theoretical Approach (2008)

Treatments of Mo- and Mn-diphosphite complexes, cis-Mo(CO)4L2 (1a) and CpMn(CO)L2 (2a) (L= P(NMeCH2)2(OMe)) with TMSOTf caused single OMe− abstraction from the coordinated phosphite to give the corresponding cationic phosphenium phosphite complexes cis-[Mo(CO)4LP(NMeCH2)2]OTf (1b) and [CpMn(CO)LP(NMeCH2)2]OTf (2b), respectively. DFT calculations for 1b and Cp(CO)2Mo(SiMe2)SiMe2(OMe) (3) revealed that a non-bridging form is a local minimum and a bridging form is a transition state for 1b, and both non-bridging and bridging forms are minima for 3.
Lattice-Mismatched 0.7-eV GaInAs Solar Cells Grown on GaAs Using GaInP Compositionally Graded Buffers (2013)

The three-junction 1.8/1.4/1.0-eV inverted metamorphic multijunction solar cell can be extended to four junctions by adding another lattice-mismatched GaInAs junction with a bandgap of 0.7 eV. However, this requires a significant amount of mismatch to GaAs substrates, i.e., 3.8%, which is difficult to obtain while maintaining high-quality material. In this paper, we perform an in-depth investigation of a GaInP compositionally graded buffer varying in composition between Ga 0.5In 0.5P and InP in order to identify limitations to dislocation glide and sources of excess dislocation formation. In situ wafer curvature, cathodoluminescence, and X-ray diffraction (XRD) are used to analyze dislocation glide; transmission electron microscopy, atomic force microscope, and XRD are used to analyze material structural properties. Composition nonuniformities and roughness are observed, and a region in the compositionally graded buffer where a significant number of excess dislocations are formed is identified. The formation of these dislocations is related to atomic ordering, which has a large influence on the dislocation behavior. Adding thickness to the region in the buffer where dislocations are formed reduces the threading dislocation density an order of magnitude. Metamorphic 0.74 eV solar cells grown on this template have internal quantum efficiency > 90% and V <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">oc</sub> > 0.3 V with J <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">sc</sub> set to 13 mA/cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> , which is the expected current in a multijunction device. These results are compared with lattice-matched GaInAs/InP solar cells to evaluate the loss associated with the lattice-mismatch.
Beam-plasma interactions in space experiments. A simulation study. (1988)

A two-dimensional, isolated-system electrostatic simulation model is used to investigate the plasma environment in the vicinity of a spacecraft during the injection of dense electron beams. The nature of the injection process is determined primarily by the relative value of two characteristic time scales: the beam stagnation time ts and the plasma response time trp. When ts<trp, spacecraft charging is significant and most of the beam electrons are drawn back into the spacecraft. When ts>trp, vehicle charging is reduced and the beam propagates away from the source. In this latter case there is strong beam-plasma turbulence which destroys the coherence of the beam within one or two gyroperiods. The spatial distribution of the beam has the form of a hollow cylinder near the source. As the beam propagates away from the source, the cylinder becomes increasingly filled. Return currents are associated with the field-aligned flow of ambient electrons, while current closure is provided primarily by the cross-field motion of the ions. Energization of the ambient electrons may increase the apparent beam size as determined from low-light TV images.
BIOLOGICAL STUDIES WITH ROSAMICIN, A NEW MICROMONOSPORA-PROVUCED MACROLIDE ANTIBIOTIC (1972)

Rosamicin is a new Micromonospora-produced macrolide antibiotic with activity equal to or superior to erythromycin and megalomicin A against grampositive bacteria and improved activity against gram-negative bacteria. Rosamicin is highly active against a variety of Mycoplasma and anaerobe species. Some erythromycin-resistant, megalomicin A-resistant strains of Staphylococcus aureus are sensitive to rosamicin confirming a lack of complete cross resistance. Rosamicin, megalomicin A and erythromycin have comparable in vivo activity on the basis of mouse protection tests.
RZ-to-NRZ format conversion at 50 Gbit/s based on a silicon microring resonator (2010)

We demonstrate RZ-to-NRZ format conversion at 50Gbit/s based on silicon microring resonator with FSR of 100GHz. Bit error rate measurements show a low power penalty compared to electrical NRZ signal for error free operation.
Ramsey Spectroscopy with Displaced Frequency Jumps (2018)

Sophisticated Ramsey-based interrogation protocols using composite laser pulse sequences have been recently proposed to provide next-generation high-precision atomic clocks with a near perfect elimination of frequency shifts induced during the atom-probing field interaction. We propose here a simple alternative approach to the auto-balanced Ramsey (ABR) interrogation protocol and demonstrate its application to a cold-atom microwave clock based on coherent population trapping. The main originality of the method, based on two consecutive Ramsey sequences with different dark periods, is to sample the central Ramsey fringes with frequency-jumps finely-adjusted by an additional frequency-displacement concomitant parameter, scaling as the inverse of the dark-period. The advantage of this displaced frequency-jumps Ramsey (DFJR) method is that the local oscillator frequency is used as a single physical variable to control both servo loops of the sequence, simplifying its implementation and avoiding noise associated with controlling the LO phase. Compared to the usual Ramsey-CPT technique, the DFJR scheme reduces the sensitivity of the clock frequency to variations of the CPT sideband ratio and to the one-photon laser detuning by more than an order of magnitude. This simple method could be applied in a wide variety of Ramsey-spectroscopy based applications including frequency metrology with CPT-based and optical atomic clocks, mass spectrometry, and precision spectroscopy.
Use of somatic cell hybrids for quantitation of mutagenesis: Reduction in background mutants by fluorescence‐activated cell sorting (FACS) (1984)

Environmentally induced mutations, especially those involving large scale genetic damage such as deletions and chromosome loss, are of central importance in the production of human genetic disease and cancer. We have developed a methodology, the AL assay, that permits detection of such extensive genetic changes which often escape detection in other systems in which they are lethal. The AL assay employs a human-Chinese hamster ovary cell hybrid that retains a single human chromosome, number 11. A set of specific cell surface antigens result from genes located on opposite arms of this chromosome. Exposure to mutagens produces mutants which form colonies in the presence of complement and specific antiserum that kill nonmutant cells. The frequency and pattern of marker loss provides a measure of single gene mutation, large and small deletion, and loss of the entire chromosome 11. We have employed the indirect fluorescein conjugated isothiocyanate (FITC) technique and fluorescence-activated cell sorting (FACS) to remove spontaneous mutants from the initial population. The 100-fold reduction in background thus far achieved should allow accurate analysis of mutation by ionizing radiation at doses of less than 10 rad.
Independently Derived Survival Risk Ratios Yield Better Estimates of Survival than Traditional Survival Risk Ratios When Using the ICISS (2003)

Traditional SRRs used by the ICISS produce less accurate estimates of mortality than independent SRRs. The ICISS can be calculated in 97.9% of incidents using independent SRRs.
Repair, evaluation, maintenance, and rehabilitation research program. A survey of engineering geophysics capability and practice in the Corps of Engineers. Final report, October 1984-September 1986 (1988)

A definition and brief overview of engineering geophysics are presented. A historical perspective of engineering geophysics practice and philosophy in general and in the Army Corps of Engineers is presented. The following factors are given as primary contributors to a dramatic increase in the scope and acceptance of engineering geophysics in recent years: a) an ever increasing number of practitioners of engineering geophysics have education and training in geophysics; b) inexpensive and increasingly sophisticated instrumentation and microcomputers make techniques and procedures possible which were previously impractical for engineering geophysics applications; c) emergence of a new class of high priority geotechnical problems include hazardous waste-site assessment, ground-water pollution, and military arsenal and range clearance and reclamation for which various geophysical methods are ideally suited. Results of a survey of engineering geophysics capability and practice in the Corps' Districts and Laboratories are presented and analyzed. The objective of the survey is to make available a convenient inventory of geophysical equipment and expertise to encourage interchange of equipment and expertise and to ultimately elevate the level of practice of engineering geophysics.