gebhart/patrepeval huggingface dataset:
Cycloaddition reactions of triphenylphosphoranylideneketene (1968)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCycloaddition reactions of triphenylphosphoranylideneketeneGail H. Birum and Clifford N. MatthewsCite this: J. Am. Chem. Soc. 1968, 90, 14, 3842–3847Publication Date (Print):July 1, 1968Publication History Published online1 May 2002Published inissue 1 July 1968https://pubs.acs.org/doi/10.1021/ja01016a045https://doi.org/10.1021/ja01016a045research-articleACS PublicationsRequest reuse permissionsArticle Views485Altmetric-Citations63LEARN 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
Identification of RNA polymerase III-transcribed Alu loci by computational screening of RNA-Seq data (2014)

Of the ∼ 1.3 million Alu elements in the human genome, only a tiny number are estimated to be active in transcription by RNA polymerase (Pol) III. Tracing the individual loci from which Alu transcripts originate is complicated by their highly repetitive nature. By exploiting RNA-Seq data sets and unique Alu DNA sequences, we devised a bioinformatic pipeline allowing us to identify Pol III-dependent transcripts of individual Alu elements. When applied to ENCODE transcriptomes of seven human cell lines, this search strategy identified ∼ 1300 Alu loci corresponding to detectable transcripts, with ∼ 120 of them expressed in at least three cell lines. In vitro transcription of selected Alus did not reflect their in vivo expression properties, and required the native 5'-flanking region in addition to internal promoter. We also identified a cluster of expressed AluYa5-derived transcription units, juxtaposed to snaR genes on chromosome 19, formed by a promoter-containing left monomer fused to an Alu-unrelated downstream moiety. Autonomous Pol III transcription was also revealed for Alus nested within Pol II-transcribed genes. The ability to investigate Alu transcriptomes at single-locus resolution will facilitate both the identification of novel biologically relevant Alu RNAs and the assessment of Alu expression alteration under pathological conditions.
50-Gbit/s Transmission at 830 nm over 350 m of LazrSpeed Multimode Fiber Using a Multiwavelength Modelocked Semiconductor Laser (2001)

We demonstrate an optical link capable of transmitting 50-Gbit/s through 350 meters of multimode fiber using a novel hybrid OTDM - WDM system. The high bit rate is carried by 10 parallel wavelength channels modulated at 5 GHz.
Flexible Measurement System fortheAnalysis ofHumanAuditory Deficits (2007)

Thepaperdeals with asystem developed toanalyze human Auditory Evoked Potentials forhealth screening purposes. Itoffers the possibility togenerate different stimuli andtoperform various proce- dures referred todifferent types ofevoked potential. Thesystem has beenassembled bycombining traditional devices (i.e. signal genera- tor; oscilloscope) andad-hoc designed ones(i.e. calibrated amplifiers andattenuators). Theimplemented software hasbeendeveloped with Labview Candoffers suitable routines fortheoptimization ofstimuli generation anddataacquisition, providing advanced algorithms to perform signal analysis andpost-processing.
Biodegradable Polymers vs. Recycling: What Are the Possibilities (1999)

Abstract Synthetic, petroleum-based polymer films are extremely stable and are commonly used in agriculture, food packaging, fast-food restaurants, and on military and commercial ships. However, their attractive stability is counterbalanced by two problems. One is that petroleum polymers contribute to the demand for expensive imported oil. The other is their great resistance to biodegradation. When disposed they constitute a serious problem with very negative environmental impact. For example, the most frequently used polyethylene film takes 200 years to biodegrade. On the other hand, the use of agricultural biopolymers that are easily biodegradable not only would solve these problems but would also provide a potential new use for surplus farm production. Unfortunately, films from agricultural polymers are initially inferior to synthetic polymers mostly because of their difficult moldability and poorer physicochemical properties. However, specifically modified acidic carbohydrates and proteins with disulfide bondings may produce attractive alternatives. Keywords: biodegradable polymersrecyclingpetroleum polymersagricultural biopolymers
IDENTIFICATION OF CD133+/NESTIN+ PUTATIVE CANCER STEM CELLS IN NON-SMALL CELL LUNG CANCER (2010)

We identified CD133(+)/nestin(+) cells as novel potential markers of lung cancer CSCs.
Optically induced conductivity changes in discharge-produced hydrogenated amorphous silicon (1980)

Long exposure to light decreases the photoconductivity and dark conductivity of some samples of hydrogenated amorphous silicon (a-Si : H). Annealing above ∼150 °C reverses the process. The effect occurs in the bulk of the films, and is associated with changes in density or occupation of deep gap states. High concentrations of P, B, or As quench the effect. Possible models involving hydrogen bond reorientation at a localized defect or electron-charge transfer between defects are discussed. An example is shown where these conductivity changes do not affect the efficiency of an a-Si : H solar cell.
Stereoelectronic effects in the hydrolysis of methyl ethylene phosphate (1984)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStereoelectronic effects in the hydrolysis of methyl ethylene phosphateKazunari Taira, Tahsin Fanni, and David G. GorensteinCite this: J. Am. Chem. Soc. 1984, 106, 5, 1521–1523Publication Date (Print):March 1, 1984Publication History Published online1 May 2002Published inissue 1 March 1984https://pubs.acs.org/doi/10.1021/ja00317a077https://doi.org/10.1021/ja00317a077research-articleACS PublicationsRequest reuse permissionsArticle Views156Altmetric-Citations21LEARN 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
<title>Use Of Laser Annealing To Achieve Low Loss In Corning 7059 Glass, ZnO, Si<formula><inf><roman>3</roman></inf></formula>N<formula><inf><roman>4</roman></inf></formula>, Nb<formula><inf><roman>2</roman></inf></formula>O<formula><inf><roman>5</roman></inf></formula>, And Ta<formula><inf><roman>2</roman></inf></formula>O<formula><inf><roman>5</roman></inf></formula> Optical Thin Film Waveguides</title> (1982)

We report consiaerabe success in using the technique of laser annealing to reduce scattering in a variety of thin-film optical waveguides deposited onto thermally-oxidized silicon substrates. For the materials Si 3N4, Nb90,, and Ta205 values of waveguide loss less than 1 oB/cm were achieved. Values of waveguide loss as1UW as'.01 db/cm nave been measured for laser-annealed Zn0 waveguides and for Corning 7059 glass wave-guides which have been both laser anneal ea and had surface coatings applied.
Personality and Heart Rate Variability: Exploring Pathways from Personality to Cardiac Coherence and Health (2013)

Background: Personality and heart rate variability (HRV) are each strong predictors of well-being, particularly cardiac health and longevity. The current project explores the correlates of personality traits on heart rate variability (HRV) to clarify how autonomic regulation may mediate the development and maintenance of health and disease. Hypothesis: Personality traits will be significantly correlated with specific measures of HRV. In particular, the Character traits of Self-Directedness, Cooperativeness, and Self-transcendence are known to promote physical, mental, and social aspects of well-being, so they were expected to be associated with indices of HRV indicating autonomic balance. Methods: Participants were 271 volunteers from the community, adult men and women. They received an extensive self-report questionnaire, allowing for a comprehensive personality evaluation. Of these participants, 118 underwent ambulatory—24 hours recording of HRV. The HRV recordings were sent to the Institute of HeartMath for interpretation. Data Analysis: Data for personality was retrieved from the Qualtrics site after online administration, into which the HRV data were entered. Analyses were conducted in SPSS 20. Results: Systematic and significant associations between personality traits were found. In particular, the Temperament and Character Inventory’s character traits were related to autonomic balance as measured by the ratio of low frequency (sympathetic) to high frequency (parasympathetic) activity. Openness, aggression, avoidant attachment, and forgiveness were found to relate to several HRV variables. Conclusion: The relations among personality and HRV support the validity of the measures in ways that clarify the strong relations among personality, HRV, and health. Further work to replicate and extend these preliminary findings in a larger sample is underway.
Invasions de singes au Frais-Vallon (1913)

Klein Henri. Invasions de singes au Frais-Vallon. In: Les Feuillets d'El-Djezaïr, volume 5, 1913. Souvenirs de l'ancien et du nouvel Alger. pp. 69-70.
Social and Economic Factors Influencing a Fetal Surgery Program for Complicated Monochorionic Twin Pregnancies in a Developing Country (2011)

When a fetal surgery program is implemented in a developing country, social and economic factors will influence the overall healthcare costs and treatment outcomes.
A Monotonic Formalism for Events and Systems of Events (1994)

The aim of this paper is to provide a basis for a theory of events and systems of events that can be used for reasoning about arbitrarily complex dynamic domains involving multiple agents. The approach is based on a model of events that explicitly represents the domain of influence of each event. By restricting the scope of an event's domain of influence, most of the problems that have seriously troubled the more conventional state-transition models of events can be avoided. The effect of performing events, either in isolation or in parallel with other events, is described. A formalism is developed that allows the reasoning about arbitrarily complex behaviours. It is shown how this formalism avoids the frame problem yet allows the ramifications of any given event occurrence to be modelled without the introduction of non-monotonic mechanisms. Finally, the notion of system is introduced to provide a compositional means for reasoning about complex domains
Synthesis and Characterization of (smif)<sub>2</sub>M<sup><i>n</i></sup>(<i>n</i>= 0, M = V, Cr, Mn, Fe, Co, Ni, Ru;<i>n</i>= +1, M = Cr, Mn, Co, Rh, Ir; smif =1,3-di-(2-pyridyl)-2-azaallyl) (2011)

A series of Werner complexes featuring the tridentate ligand smif, that is, 1,3-di-(2-pyridyl)-2-azaallyl, have been prepared. Syntheses of (smif)(2)M (1-M; M = Cr, Fe) were accomplished via treatment of M(NSiMe(3))(2)(THF)(n) (M = Cr, n = 2; Fe, n = 1) with 2 equiv of (smif)H (1,3-di-(2-pyridyl)-2-azapropene); ortho-methylated ((o)Mesmif)(2)Fe (2-Fe) and ((o)Me(2)smif)(2)Fe (3-Fe) were similarly prepared. Metatheses of MX(2) variants with 2 equiv of Li(smif) or Na(smif) generated 1-M (M = Cr, Mn, Fe, Co, Ni, Zn, Ru). Metathesis of VCl(3)(THF)(3) with 2 Li(smif) with a reducing equiv of Na/Hg present afforded 1-V, while 2 Na(smif) and IrCl(3)(THF)(3) in the presence of NaBPh(4) gave [(smif)(2)Ir]BPh(4) (1(+)-Ir). Electrochemical experiments led to the oxidation of 1-M (M = Cr, Mn, Co) by AgOTf to produce [(smif)(2)M]OTf (1(+)-M), and treatment of Rh(2)(O(2)CCF(3))(4) with 4 equiv Na(smif) and 2 AgOTf gave 1(+)-Rh. Characterizations by NMR, EPR, and UV-vis spectroscopies, SQUID magnetometry, X-ray crystallography, and DFT calculations are presented. Intraligand (IL) transitions derived from promotion of electrons from the unique CNC(nb) (nonbonding) orbitals of the smif backbone to ligand π*-type orbitals are intense (ε ≈ 10,000-60,000 M(-1)cm(-1)), dominate the UV-visible spectra, and give crystals a metallic-looking appearance. High energy K-edge spectroscopy was used to show that the smif in 1-Cr is redox noninnocent, and its electron configuration is best described as (smif(-))(smif(2-))Cr(III); an unusual S = 1 EPR spectrum (X-band) was obtained for 1-Cr.
Dynamic Adsorption Behavior of Poly(3-hydroxybutyrate) Depolymerase onto Polyester Surface Investigated by QCM and AFM (2005)

Time-dependent adsorption behavior of poly(3-hydroxybutyrate) (PHB) depolymerase from Ralstonia pickettiiT1 on a polyester surface was studied by complementary techniques of quarts crystal microbalance (QCM) and atomic force microscopy (AFM). Amorphous poly(l-lactide) (PLLA) thin films were used as adsorption substrates. Effects of enzyme concentration on adsorption onto the PLLA surface were determined time-dependently by QCM. Adsorption of PHB depolymerase took place immediately after replacement of the buffer solutions with the enzyme solutions in the cell, followed by a gradual increase in the amount over 30 min. The amount of PHB depolymerase molecules adsorbed on the surface of amorphous PLLA thin films increased with an increase in the enzyme concentration. Time-dependent AFM observation of enzyme molecules was performed during the adsorption of PHB depolymerase. The phase response of the AFM signal revealed that the nature of the PLLA surface around the PHB depolymerase molecule was changed due to the adsorption function of the enzyme and that PHB depolymerase adsorbed onto the PLLA surface as a monolayer at a lower enzyme concentration. The number of PHB depolymerase molecules on the PLLA surface depended on the enzyme concentration and adsorption time. In addition, the height of the adsorbed enzyme was found to increase with time when the PLLA surface was crowded with the enzymes. In the case of higher enzyme concentrations, multilayered PHB depolymerases were observed on the PLLA thin film. These QCM and AFM results indicate that two-step adsorption of PHB depolymerase occurs on the amorphous PLLA thin film. First, adsorption of PHB depolymerase molecules takes place through the characteristic interaction between the binding domain of PHB depolymerase and the free surface of an amorphous PLLA thin film. As the adsorption proceeded, the surface region of the thin film was almost covered with the enzyme, which was accompanied by morphological changes. Second, the hydrophobic interactions among the enzymes in the adlayer and the solution become more dominant to stack as a second layer.
Crystal structure of sialylated IgG Fc: Implications for the mechanism of intravenous immunoglobulin therapy (2013)

Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans the biological, physical, and social sciences.
Cavitation, “Pure” and Simple (1971)

Two areas of capitation research have met with limited success until recently: (1) the measurement of the strength or cavitation threshold of pure (mote-free) liquids; and (2) the prediction of the threshold of liquids known to be “impure.” Advances in these areas are reviewed and new results are reported. The influence of mote size and mote wetability on the cavitation threshold has been studied theoretically [R. Apfel, J. Acoust. Soc. Amer. (to be published)]. Results of this work bring some semblance of order to a wide variety of cavitation observations. By minimizing the number of motes in the liquid sample and by isolating the sample from solid container surfaces, it is possible to measure the strength of pure liquids. This has been accomplished by testing small filtered droplets of the sample suspended in an “inert” host liquid. Furthermore, the tests have been performed at temperatures at which the sample has undergone significant super heating; under this condition, the predicted tensile stresses are low enough to be accessible experimentally. This technique [R. Apfel, J. Acoust. Soc. Amer. (to be published)] has been modified with the intention of studying the liquid-to-solid phase transition. [Work supported by the Office of Naval Research.]
Effect of Chronic Viral Infection on Epitope Selection, Cytokine Production, and Surface Phenotype of CD8 T Cells and the Role of IFN-γ Receptor in Immune Regulation (2004)

Regulation of CD8 T cell responses in chronic viral infections is not well understood. In this study, we have compared the CD8 T cell responses to immunodominant and subdominant epitopes during an acute and a chronic lymphocytic choriomeningitis virus (LCMV) infection in mice. The epitope hierarchy of the primary CD8 T cell response was similar in acute and chronic LCMV infections. However, strikingly, the epitope hierarchy of the primary CD8 T cell response was conserved in the T cell memory only in an acute but not in a chronic LCMV infection. Interestingly, in an acute infection, increasing the viral dose caused significant changes in the epitope hierarchy of the LCMV-specific memory CD8 T cell pool, with no effect on the primary CD8 T cell response. Functional and phenotypic analyses revealed that exposure of CD8 T cells to extended periods of antigenic stimulation could lead to long-term defects in cytokine production and alteration in expression of cell surface L-selectin (CD62L). Whereas expression of CD44 was minimally altered, a greater proportion of LCMV-specific memory CD8 T cells were CD62L(low) in mice that have recovered from a chronic LCMV infection, compared with acutely infected mice. Mechanistic studies showed that IFN-gammaR deficiency altered the epitope hierarchy of the pool of LCMV-specific memory CD8 T cells without significantly affecting the immunodominance of the primary CD8 T cell response in an acute infection. Taken together, these findings should further our understanding about the regulation of T cell responses in human chronic viral infections.
The maternal hemodynamic effects of bupivacaine‐epinephrine mixture used for obstetrical anesthesia (1990)

The maternal hemodynamic effects of bupivacaine (0.5%)-epinephrine (5 micrograms/ml) mixture used for lumbar epidural anesthesia were studied with an impedance cardiograph and an automated blood pressure device in term gravidas undergoing elective cesarean section. Following i.v. hydration with 2000 ml Ringer's lactate solution, 16 patients received bupivacaine-epinephrine mixture and 16 patients plain bupivacaine in 5-ml increments to a T4 level. Measurements were made before anesthesia, at T10 and at T4 sensory levels. Results were analyzed using analysis of variance (ANOVA) and the least significant difference method at P less than 0.05. In the epinephrine group, at T10 level, the diastolic (D) and mean (M) pressures decreased significantly 11 +/- 3, and 10 +/- 1% (mean +/- s.e. mean) respectively with no significant change in the S pressure. No significant changes were seen in the plain group. At T4, the S, D and M pressures decreased significantly 8 +/- 2, 18 +/- 4 and 16 +/- 2% in the epinephrine group. In the plain group the decrease in each one of these pressures was less than 5% and was not significant. In the epinephrine group, S, D and M pressures decreased significantly more than they did in the plain group at T10 and T4. Systemic vascular resistance decreased significantly from control values by 19 +/- 6% at T4 in the epinephrine group with no significant changes in the plain group.(ABSTRACT TRUNCATED AT 250 WORDS)
Square wave polarographic determination of sulphur ions (1970)

第二水銀イオンの溶出波を用いるく形波ポーラログラフィーによるイオウイオンの定量法について検討した.イオウイオンの波が,支持電解質として用いる市販特級の水酸化ナトリウム中に不純物として含まれているPb2+の波と重なることがわかった.この両者の波は,0.09Mエチレンジアミンテトラ酢酸四ナトリウム塩を添加することにより分離できた.1M水酸化ナトリウム,0.09Mエチレンジアミンテトラ酢酸四ナトリウム塩の支持電解質中で,頂点電位が-0.610V vs. Hg plooloをもつ頂点電流を用いて,イオウイオンの濃度1×10-6M~1×10-5M,1×10-5M~1×10-4Mで,検量線を求めることができた.SO42-,SO32-,S2O32-,SCN-,I-,Br-,Cl-などの陰イオンがイオウイオンに対して100倍以上も含まれていても妨害しない.くりかえしの誤差はおよそ±3%であった.
Looking at the world through liquid crystal glasses (2012)

Liquid crystals helped to bring a revolution in the way we present information nowadays. The simplest liquid crystal, the so-called nematic, is a fluid with long-range orientational order of molecules. The local average direction of this orientation is called a director; it serves as the local optic axis of the medium that can be easily realigned by external electromagnetic fields, change in boundary conditions, introduction of topological defects, etc. I consider basic features of light propagation through a liquid crystal medium. The examples include (1) thin nematic slabs viewed with a standard polarizing microscope and a LC-PolScope; (2) three dimensional imaging of liquid crystals by fluorescence confocal polarizing microscopy and coherent anti-Stokes Raman scattering microscopy; (3) negative refraction at the nematic interface; (4) liquid crystals as metamaterials for transformation optics.
QUANTITATIVE ANALYSIS OF EXPOSURE OF STAGED ORBITOZYGOMATIC AND RETROSIGMOID CRANIOTOMIES FOR LESIONS OF THE CLIVUS WITH SUPRATENTORIAL EXTENSION (2008)

OZ and RS craniotomies provide complementary exposure with limited redundancy. Significant visualization of the parasellar region, clivus, and surrounding bony landmarks is obtained. The primary limitation is exposure of the contralateral half of Zones II and III of the clivus. This strategy represents a reasonable option for accessing paracentral petroclival lesions with a supratentorial extension.
SELECTIVE ASYMMETRIC REDUCTION OF α,β-UNSATURATED KETONES VIA HYDROSILYLATION CATALYZED BY RHODIUM(I) COMPLEXES WITH CHIRAL PHOSPHINE LIGANDS (1975)

Abstract Selective asymmetric reductions of carbonyl functionalities in α,β-unsaturated carbonyl compounds, such as β-ionone, 2-methylcyclohexenone and mesityl oxide, were successfully carried out using dihydrosilane-chiral rhodium(I) complex catalyst combinations.