gebhart/patrepeval huggingface dataset:
The Heats of Formation of Tetrafiuoroethylene, Tetrafluoromethane and, l, l-Difluoroethylene. (1956)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Heats of Formation of Tetrafiuoroethylene, Tetrafluoromethane and, l, l-Difluoroethylene.Constantine A. Neugebauer and John L. MargraveCite this: J. Phys. Chem. 1956, 60, 9, 1318–1321Publication Date (Print):September 1, 1956Publication History Published online1 May 2002Published inissue 1 September 1956https://pubs.acs.org/doi/10.1021/j150543a039https://doi.org/10.1021/j150543a039research-articleACS PublicationsRequest reuse permissionsArticle Views147Altmetric-Citations29LEARN 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 options Get e-Alerts
Growth and gaseous emissions of pure and mixed small intestinal bacterial cultures: Effects of bile and vancomycin (2009)

Simultaneous cultivations in anaerobiosis, aerobiosis and with microaerobic gas mixture were used to clarify the bile (oxgall) effects on the pure and mixed cultures of enterobacterial strains in simulations in Portable Microbe Enrichment Unit (PMEU) linked with ChemPro100i((R)) gas detector. The effects of vancomycin were evaluated in aerobic cultures. Growth and metabolic activity of cultures were also followed by measuring sugar consumption, pH alterations, and colony counts on BD CHROMagar Orientation plates. Results showed that the two fermentatively different strains of facultative anaerobes, Escherichia coli E 17 and Klebsiella mobilis ATCC 13048 grew in balance regardless of oxygen level, bile acid concentration or other components of the mixed cultures, Bacillus cereus or Staphylococcus aureus. When the evaporations of the mixed cultures of E. coli, K. mobilis and S. aureus were compared with the emissions of the corresponding pure cultures by ChemPro100i((R)) gas sensing detector, the pure cultures of bile resistant E. coli and K. mobilis produced more gaseous components than the mixed culture indicating that these organisms cooperate and use the substrate more effectively together than separately. A survey of the aseptic bacterial isolations from the bile tract in a big University Hospital, (Salzburg, Austria) during 3 years, showed that these bacterial groups dominated. Only 13.24% of the 287 patient samples were sterile, and around 180 strains of both E. coli and Klebsiella/Enterobacter groups were found amongst 973 isolates from 249 patients (together 35.57%). Enterococcus sp. accounted for 246 isolates being the largest group of strains (24.25% of all the isolates). In anaerobiosis it was shown that Klebsiella neutralized the acids produced in the mixed acid fermentation of the E. coli. The ethanol produced from both groups evaporated in the gas stream of the PMEU culturing step and its formation also removes excess acidity from the cultures. The synergistic behaviour and symbiotic function between E. coli and Klebsiella/Enterobacter strains is suggested.
Present status and future of high-precision image guided adaptive brachytherapy for cervix carcinoma (2008)

By 3D treatment planning for IGABT significant improvement of the DVH parameters is achieved compared to 2D library plans. In small tumours the benefit is primarily obtained by a decrease of dose to nearby OAR while in large tumours the use of supplementary interstitial techniques and optimization may double the target volume that can be treated at a therapeutic dose level. The clinical impact of IGABT could recently be demonstrated by the establishment of some correlations between target- and organ-related DVH parameters versus disease control and side effects, which need further clarification. Overall, a very high local control rate can be achieved with minor treatment related morbidity. This favourable therapeutic ratio seems to be now reproducible under different conditions at various treatment centres. These results have to be validated within the upcoming multi-centre prospective IntErnational study on MRI-guided brachytherapy in locally advanced cervical cancer (EMBRACE).
Microstructural observations of LPCVD double layer polysilicon thin film tensile specimens[Low Pressure Chemical Vapor Deposition] (1997)

The vast majority of micro electro-mechanical systems fabricated today depend on polycrystalline silicon thin films for structural support. Studies involving the mechanical performance of these thin films have progressed to the point where the elastic properties and tensile strength of the films can routinely be measured using a specially designed microsample tensile testing machine. However, a fundamental understanding to predict the mechanical behavior of the polycrystalline silicon films requires that these experimental measurements be complemented with detailed observations of the underlying thin film microstructure. This paper describes some of the plan view and cross-section transmission electron microscope observations that have been performed on different deposition runs of double layer polycrystalline films obtained from the Microelectronics Center of North Carolina. The emphasis has been placed on determining the flatness and dimensions of the polycrystalline films, grain morphology and distribution, texture, and dislocation substructure and microtwinning in the undeformed films.
Inhibition of TXA<sub>2</sub>synthesis with OKY‐046 improves liver preservation by prolonged hypothermic machine perfusion in rats (2007)

The results demonstrate that TXA(2) is involved in the development of hepatocellular injury induced by HMP, and inhibition of TXA(2) synthesis during preservation and reperfusion protects liver hepatocytes and sinusoidal endothelial cells from injuries caused by prolonged HMP.
R68-51 The Design of an Automatic Patching System (1968)

"Getting rid of the patchpanel" has long been the dream of analog computer users (and designers). Besides the aesthetic value of eliminating "all those messy wires," there are the more substantial advantages of shortened turnaround time, long-term low-cost problem storage and greatly simplified programming.
The metabolism of higher chlorinated benzene isomers (1976)

The metabolism of the isomeric tri- and tetrachlorobenzene isomers, penta- and hexachlorobenzene was investigated in the rabbit. The major urinary metabolites of the isomeric tri- and tetrachlorobenzenes were identified as the corresponding tri- and tetrachlorophenols whose structures were confirmed by chromatographic analyses. The genesis of the formation of metabolites is discussed in terms of their possible arene oxide intermediates in which the NIH shift of a chlorine atom is observed in the oxidation of many of the isomers. Pentachlorobenzene is metabolized to give both pentachlorophenol and a dechlorination-hydroxylation product which was identified as 2,3,4,5-tetrachlorophenol. The hexachlorobenzene substrate did not give any phenolic metabolites.
Secular Trends in Cardiac Transplant Recipient and Donor Management in the United States, 1990 to 1994 (1996)

The widening gap between the number of waiting recipients and the number of donors has resulted in a continuing trend toward transplanting urgent status recipients and to a liberalization of donor acceptance criteria. Despite these changes, posttransplant survival has remained constant.
Allopurinol and dimethylthiourea reduce brain infarction following middle cerebral artery occlusion in rats. (1989)

Free radicals have been shown to play an important role in ischemia-reperfusion injury in several organ systems; however, the role of free radicals in central nervous system ischemia has been less well studied. Many potential free radical-generating systems exist. The primary products of these reactions, superoxide and hydrogen peroxide, may combine to produce hydroxyl radicals. Of the many potential sources of free radical generation, the enzyme xanthine oxidase has been shown to be important in ischemia in noncerebral tissue. We investigated the effect of the hydroxyl radical scavenger dimethylthiourea and the xanthine oxidase inhibitor allopurinol on infarct volume in a model of continuous partial ischemia. Male Sprague-Dawley rats were treated with dimethylthiourea or allopurinol before middle cerebral artery occlusion. Infarct volume was measured by triphenyltetrazolium chloride staining of brains removed 3 or 24 hours after occlusion. Stroke volume was reduced by 30% after dimethylthiourea treatment and by 32-35% after allopurinol treatment. At 24 hours after stroke, cortical tissue was more effectively protected than caudate tissue with both agents. Pretreatment with dimethylthiourea and allopurinol also significantly reduced cerebral edema formation and improved blood-brain barrier function as measured by fluorescein uptake. Our results imply that hydroxyl radicals are important in tissue injury secondary to partial cerebral ischemia and that xanthine oxidase may be the primary source of these radicals.
Effect of Vegetarianism and Smoking on Vitamin B <sub>12</sub> , Thiocyanate, and Folate Levels in the Blood of Normal Subjects (1972)

Vitamin B(12), thiocyanate, and folate levels in the blood were estimated in 69 apparently normal subjects, of whom 26 were non-vegetarian non-smokers, 19 non-vegetarian smokers, 15 vegetarian non-smokers, and nine vegetarian smokers. The serum total (cyanide-extracted) B(12) level (value A) ranged from 105 to 728 pg/ml, with a mean of 292 pg/ml. The highest values were found in non-vegetarian non-smokers and the lowest in vegetarian smokers. There was no significant difference in value A between smokers as a group and non-smokers as a group. On the other hand, in vegetarians value A was very significantly lower than in non-vegetarians regardless of their smoking habits.It is suggested that A may represent both the protein-bound and free forms of vitamin B(12) in the blood, and B mainly the free B(12), which may be the physiologically active form. The plasma thiocyanate level varied from 1.0 to 15 mumol/100 ml, being, as expected, much higher in smokers (mean 8.20 mumol/100 ml) than in non-smokers (mean 2.02 mumol/100 ml). There was a rough correlation between falling B(12) levels and rising thiocyanate levels. The serum folate level ranged from 2.75 to 15.75 ng/ml, and was slightly but significantly higher in vegetarians (mean 6.60 ng/ml) than in non-vegetarians (mean 4.79 ng/ml), reflecting the greater content of folate in a vegetarian diet.
The sound quality of the Teatro Comunale in Treviso, Italy (1999)

The Teatro Comunale of Treviso was designed at the same time as the Teatro La Fenice of Venice, in the middle of the 19th century. Treviso being so close to Venice, the reputation of the Venetian Theatre, just rebuilt after the burning of 1836, influenced the municipality of this little town, which decided to design the Theatre with the same shape as la Fenice. After the burning of 1996, and following the disappointment of losing such unique architecture and sound quality, acoustical measurements were performed in many Italian theatres, especially in historic theatres where acoustical measurements were never before undertaken. In this paper, the results of the acoustic measurements are presented. According to ISO 3382, binaural measurements, with a dummy head, have been performed in 25 positions in the hall, with different positions of the sound source in the proscenium. Acoustical parameters, such as EDT, G, LE were calculated from the impulse responses and mapped. Also, Ando’s quality maps of preferences, with reference to two different kinds of musical signals, were accomplished from experimental measurements. From the measurements, a good behavior of the theatre has been pointed out, even if some limitations in some positions have been discovered.
ChemInform Abstract: Remarkably Efficient Deprotection of Cyclic Acetals and Ketals. (1999)

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.
Radiation-Induced Radicals in Glucose-1-phosphate. II. DFT Analysis of Structures and Possible Formation Mechanisms (2008)

Four radiation-induced carbon-centered radicals in dipotassium glucose-1-phosphate dihydrate single crystals are examined with DFT methods, consistently relying on a periodic computational scheme. Starting from a set of plausible radical models, EPR hyperfine coupling tensors are calculated for optimized structures and compared with data obtained from EPR/ENDOR measurements, which are described in part I of this work. In this way, an independent structural identification is made of all the radicals that were observed in the experiments (R1−R4) and tentative reaction schemes are proposed. Also, the first strong evidence for conformational freedom in sugar radicals is established: two species are found to have the same chemical composition but different conformations and consequently different hyperfine coupling tensors. Analysis of the calculated energies for all model compounds suggests that the radiation chemistry of sugars, in general, is kinetically and not necessarily thermodynamically controlled.
Trauma Surgeon's Leadership Role in the Development of Trauma Systems (1999)

Hoyt, David B. MD; Moore, Ernest E. MD; Shackford, Steven R. MD; Holcroft, James W. MD; Jurkovich, Gregory J. MD Author Information
The Hypotensive Principles of Veratrum Viride (1950)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Hypotensive Principles of Veratrum VirideJosef Fried, Howard L. White, and O. WintersteinerCite this: J. Am. Chem. Soc. 1950, 72, 10, 4621–4630Publication Date (Print):October 1, 1950Publication History Published online1 May 2002Published inissue 1 October 1950https://pubs.acs.org/doi/10.1021/ja01166a080https://doi.org/10.1021/ja01166a080research-articleACS PublicationsRequest reuse permissionsArticle Views71Altmetric-Citations29LEARN 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
ChemInform Abstract: A NEW APPROACH FOR THE SYNTHESIS OF FUSED IMIDAZOLES: THE SYNTHESIS OF 3‐ACYL‐SUBSTITUTED IMIDAZO(1,2‐X)AZINES (1984)

Abstract Die aus 3‐Amino‐6‐chlorpyridazinen (I) zugänglichen Amidine (II) werden beim Erhitzen mit Brommethylketonen (III) in Alkoholen, DMF oder Cyclohexan zu Imidazo[1,2‐b]pyridazinen (IV) cyclisiert.
Laser fluorescence determination of the hydroxyl concentration in flames (1988)

A relation between the fluorescence intensity and the OH concentration is derived based on an analysis of the system of kinetic equations describing the interaction of resonant of the system of kinetic equations describing the interaction of resonant laser radiation with an OH molecule. Experimental profiles of the fluorescence intensity in propane-air flames with a stoichiometric composition and excess fuel are presented. It is established that a protective nitrogen flame eliminates the zone of secondary combustion when excess fuel is present. A new method of calibration, based on taking into account the reabsorption of laser radiation, is proposed. The measurements of the OH concentrations performed by the method of laser-induced fluorescence agree well with the results of absorption measurements. {copyright} 1989 Plenum Publishing Corporation
The effect of different hardeners on the ageing of crosslinked epoxy resins (1991)

Abstract Polymers based on epoxies are widely used in the industrial production of materials for different applications. The crosslinking is often done with hardeners like aliphatic or aromatic amines, with dicarboxylic acid anhydride or anionically. The resins containing mineral fillers possess similar thermal mechanical properties. On thermal oxidative ageing, however, the systems behave very differently. An account is given of the thermal mechanical behaviour and of the weight loss on ageing above the glass transition temperature. By using semiempirical molecular orbital calculations we have been able to identify a possible reason for the different thermal oxidative stability of epoxy resins crosslinked with different hardeners.
Mesoporous Materials with an Acidic Framework and Basic Pores. A Successful Cohabitation (2006)

Bifunctional mesoporous material with an acidic framework and basic pores was synthesized via the co-condensation of TEOS, bistrimethoxysilylated precursors with a disulfide core, and 3-tert-butyloxycarbonyl (aminopropyl)triethoxysilane using P123 as surfactant; the reduction of disulfide units to SH groups followed by their oxidation into SO3H and deprotection of amino groups gave rise to a material containing two antagonist functionalities located at the nanometric scale in a successful cohabitation, avoiding their mutual destruction in the presence of aprotic solvent. This kind of material illustrates the large possibilities offered by mesoporous materials and opens new and unsuspected applications.
Scale-Based Description and Recognition of Planar Curves and Two-Dimensional Shapes (1986)

The problem of finding a description, at varying levels of detail, for planar curves and matching two such descriptions is posed and solved in this paper. A number of necessary criteria are imposed on any candidate solution method. Path-based Gaussian smoothing techniques are applied to the curve to find zeros of curvature at varying levels of detail. The result is the ``generalized scale space'' image of a planar curve which is invariant under rotation, uniform scaling and translation of the curve. These properties make the scale space image suitable for matching. The matching algorithm is a modification of the uniform cost algorithm and finds the lowest cost match of contours in the scale space images. It is argued that this is preferable to matching in a so-called stable scale of the curve because no such scale may exist for a given curve. This technique is applied to register a Landsat satellite image of the Strait of Georgia, B.C. (manually corrected for skew) to a map containing the shorelines of an overlapping area.
Microsatellite markers for <i>Spergularia media</i> (L.) C. Presl. (Caryophyllaceae) and their cross‐species transferability (2009)

We developed 11 polymorphic microsatellite markers for Spergularia media (Caryophyllaceae), a perennial halophyte of coastal salt meadows and continental areas of western Eurasia. The number of alleles per locus observed in a single population of 20 individuals from the German North Sea coast ranged from 3 to 20. Observed and expected heterozygosities ranged from 0.200 to 0.850 and from 0.278 to 0.936 respectively. Observed heterozygosities were lower than expected heterozygosities at all loci, presumably as a consequence of inbreeding. All markers cross-amplified in the closely related S. salina. Of these, nine were polymorphic in the heterologous species. Only two primer pairs generated PCR products in S. diandra.
CVS Data Extraction and Analysis: A Case Study (2004)

Version control repositories contain a wealth of detailed information about the evolution of a codebase. In this paper, we outline our experiences parsing and analyzing data from a large collection of CVS repositories created by many students working on a small set of assignments in a second year undergraduate computer science course. We believe the data to be quite unique because rather than a single team working on a single large project we have many individuals working separatly on identical projects. We describe a system for parsing repositories into a SQL database. From the database and repositories we extract various statistical measures of the code and version histories. Finally, we attempt to correlate the code and repository features with grades. Despite using 166 features derived from the code and repository histories, we find that grade performance cannot be accurately predicted; certainly no predictors stronger than simple lines-of-code were found.
Cervical Sagittal Alignment in Scheuermann Disease (2015)

4.
Synthesis of Ketenes with Oxide Catalysts (1994)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis of Ketenes with Oxide CatalystsMark C. Libby, Paul C. Watson, and Mark A. BarteauCite this: Ind. Eng. Chem. Res. 1994, 33, 12, 2904–2912Publication Date (Print):December 1, 1994Publication History Published online1 May 2002Published inissue 1 December 1994https://pubs.acs.org/doi/10.1021/ie00036a003https://doi.org/10.1021/ie00036a003research-articleACS PublicationsRequest reuse permissionsArticle Views543Altmetric-Citations34LEARN 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