gebhart/patrepeval huggingface dataset:
Calcul des intégrales de recouvrement dicentriques et des intégrales coulombiennes et hybrides (1974)

Après le rappel d’un certain nombre de concepts classiques un schéma de calcul est développé à partir de la méthode de Barnett et Coulson (9) pour les intégrales de recouvrement, coulombiennes et hybrides entre orbitales de Slater. On aboutit pour ces intégrales à des formules générales comportant un nombre fini de termes fonction des nombres quantiques particulièrement adaptées à leur programmation sur ordinateur. Le calcul de tous les termes est explicité.
Combining Light-Harvesting and Charge Separation in a Self-Assembled Artificial Photosynthetic System Based on Perylenediimide Chromophores (2004)

Self-assembly of robust perylenediimide chromophores is used to produce an artificial light-harvesting antenna structure that in turn induces self-assembly of a functional special pair that undergoes ultrafast, quantitative charge separation. The structure consists of four 1,7-(3',5'-di-tert-butylphenoxy)perylene-3,4:9,10-perylene-3,4:9,10-bis(carboximide) (PDI) molecules attached to a single 1,7-bis(pyrrolidin-1-yl)perylene-3,4:9,10-perylene-3,4:9,10-bis(carboximide) (5PDI) core, which self-assembles to form (5PDI-PDI4)2 in toluene. The system is characterized using both structural methods (NMR, SAXS, mass spectroscopy, and GPC) and photophysical methods (UV-vis, time-resolved fluorescence, and femtosecond transient absorption spectroscopy). Energy transfer from (PDI)2 to (5PDI)2 occurs with tau = 21 ps, followed by excited-state symmetry breaking of 1*(5PDI)2 to produce 5PDI*+-5PDI*- quantitatively with tau = 7 ps. The ion pair recombines with tau = 420 ps. Electron transfer occurs only in the dimeric system and does not occur in the disassembled monomer, thus mimicking both antenna and special pair function in photosynthesis.
Local environment of intercalated lanthanide ions in vermiculite (1991)

The local structure of interlayer lanthanide ions ion-exchanged into vermiculite clay has been determined as a function of the nature of the lanthanide ion and of the physical form of the sample (powders and oriented films) using X-ray absorption spectroscopy. Water molecules form the first coordination shell, with metal–oxygen bond lengths of 2.52 (La—O), 2.53 (Ce—O), 2.32 (Er—O) and 2.33 Å(Lu—O), very similar to the corresponding interatomic distances in aqueous lanthanide nitrate solutions. However, the coordination numbers of the heavier lanthanide ions are greater than those of the lighter ones, in contrast to the behaviour observed in solution. This variation is attributed to the participation of coordinated water in the transmission of local charges on the lanthanide ions to the vermiculite layer surface. Across the lanthanide series a significant difference in coordination number between La-vermiculite powder (6 neighbours) and film (9 neighbours), is reduced in the cerium sample (7.5 and 9, respectively) and reached a negligible variation in the heavier (Er, Lu) vermiculites. This is attributed to a diffusion phenomenon of water within the vermiculite interlayers. Preliminary a.c. conductivity measurements of Lu-vermiculite films are in the range of 10–6 S cm–1.
Oxygen solubilities in aqueous alcohol solutions (1984)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOxygen solubilities in aqueous alcohol solutionsIlona Kutsche, Georg Gildehaus, Dieter Schuller, and Adrian SchumpeCite this: J. Chem. Eng. Data 1984, 29, 3, 286–287Publication Date (Print):July 1, 1984Publication History Published online1 May 2002Published inissue 1 July 1984https://pubs.acs.org/doi/10.1021/je00037a018https://doi.org/10.1021/je00037a018research-articleACS PublicationsRequest reuse permissionsArticle Views1366Altmetric-Citations37LEARN 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
Hierarchically Structured Hematite Architectures Achieved by Growth in a Silica Hydrogel (2015)

Biomineralization strategies include the use of hydrogels to direct the formation of composite, single-crystal-like structures with unique structure-property profiles. Application of similar synthetic approaches to transition-metal oxides has the promise to yield low-temperature routes to hierarchically structured crystals that are optimized for a range of applications. Here, growth of hematite (α-Fe2O3) within a silica hydrogel resulted in hierarchical, mosaic crystals preferentially expressing catalytically active {110} facets, which are absent in solution-grown controls. Quantitative structural and compositional analysis reveals architectural changes that begin with the incorporation of silicon into the hematite lattice and propagate through to the nanoscale domain structure and assembly, leading to microscale morphologies that show improved photocatalytic performance. This work demonstrates the potential of applying bioinspired crystallization techniques to design functional oxides with multiscale architectural features.
Long-Term Outcome and MGMT as a Predictive Marker in 24 Patients With Atypical Pituitary Adenomas and Pituitary Carcinomas Given Treatment With Temozolomide (2015)

This study shows that TMZ is a valuable treatment option for patients with uncontrolled pituitary tumors. The data suggest that tumoral MGMT staining below 50% is associated with a high likelihood of treatment response.
Multipath resolution with PN chip interval (2003)

If the delay between two multipaths is about a chip interval and the path strength is almost equal, then the envelope tracking (ENV) scheme of A. Baier et al. (see IEEE JSAC, vol.12, no.4, p.733-43, 1994) performs poorly. This is because only a single peak is observed in the envelope of the correlation function (or multipath power delay profile) and the peak position is about half a chip interval away from the two true multipath delays. Also, the envelope tracking with subtraction (ENV-SUB) scheme of E. Sourour et al. (see Proc. IEEE 49th VTC, p.422-6, 1999) regards the channel in this situation as a three-path channel and generates incorrect delay estimates. K. Han et al. (see ICC, 2001) proposed a heuristic multipath searcher for this situation. We propose a multipath searcher with a chip time resolution for such a two-path channel with near-equal strength, based on the maximum likelihood (ML) principle. In addition, the paper presents the detection probability that a two-path channel decision is made when the channel has two paths truly, given that the multipath delay power profile shows a single peak. The analytical results are compared with those of Han et al.
Multi‐analyte profile analysis of plasma immune proteins: altered expression of peripheral immune factors is associated with neuropsychiatric symptom severity in adults with and without chronic hepatitis <scp>C</scp> virus infection (2013)

BackgroundThe purpose of this study was to characterize hepatitis C virus (HCV)-associated differences in the expression of 47 inflammatory factors and to evaluate the potential role of peripheral immune activation in HCV-associated neuropsychiatric symptoms-depression, anxiety, fatigue, and pain. An additional objective was to evaluate the role of immune factor dysregulation in the expression of specific neuropsychiatric symptoms to identify biomarkers that may be relevant to the treatment of these neuropsychiatric symptoms in adults with or without HCV. MethodsBlood samples and neuropsychiatric symptom severity scales were collected from HCV-infected adults (HCV+, n = 39) and demographically similar noninfected controls (HCV-, n = 40). Multi-analyte profile analysis was used to evaluate plasma biomarkers. ResultsCompared with HCV- controls, HCV+ adults reported significantly (P < 0.050) greater depression, anxiety, fatigue, and pain, and they were more likely to present with an increased inflammatory profile as indicated by significantly higher plasma levels of 40% (19/47) of the factors assessed (21%, after correcting for multiple comparisons). Within the HCV+ group, but not within the HCV- group, an increased inflammatory profile (indicated by the number of immune factors > the LDC) significantly correlated with depression, anxiety, and pain. Within the total sample, neuropsychiatric symptom severity was significantly predicted by protein signatures consisting of 4-10 plasma immune factors; protein signatures significantly accounted for 19-40% of the variance in depression, anxiety, fatigue, and pain. ConclusionsOverall, the results demonstrate that altered expression of a network of plasma immune factors contributes to neuropsychiatric symptom severity. These findings offer new biomarkers to potentially facilitate pharmacotherapeutic development and to increase our understanding of the molecular pathways associated with neuropsychiatric symptoms in adults with or without HCV.
<title>Signal processing electronics for a capacitive microsensor</title> (2000)

An interface circuit in a 0.8-micrometers CMOS process for the on- chip integration of a capacitive micro-sensor used as a microphone is presented. In order to circumvent 1/f noise contributions and to improve the signal/noise ratio, a synchronous modulation-demodulation technique has been applied. For the implementation of this technique, we have studied and designed several functional block, such as modulator with signal conversion, low-noise amplifier, demodulator, etc. To deal with problems related to dispersion of intrinsic capacitance of the sensor, a feedback compensating solution is suggested. The designed circuit has a sensibility of 1200 V/pF, with a minimum detectable capacitance variation of 2 10-6 pF.© (2000) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Nonlinear phase shift and all-optical switching in quasi-phase-matched quadratic media (1998)

Parametric wave mixing in quadratic (or χ (2) ) nonlinear materials has attracted a growing attention because of its perspectives for all-optical switching devices [1]. Many of the theoretically predicted effects, such as large nonlinear phase-shifts and dichromatic spatial solitons (mutually trapped fundamental and second harmonic beams), have already been observed experimentally in bulk crystals and slab waveguides [1]. Switching devices based on the non linear phase shift in quadratic materials such as integrated Mach-Zehnder interferometers and directional couplers have also been experimentally demonstrated [2]. However, most of the switching effects require a small wave vector mismatch between fundamental wave (FW) and second harmonic (SH). Quasi-phase matching (QPM) is a promising technique, since it allows, at least potentially, to achieve phase-matching in any material over a wide range of wavelengths [3]. As a consequence the largest component of the second-order susceptibility tensor can be used, allowing for a decrease in operating power. The idea of QPM is to periodically modulate the χ (2) coefficient where the pertinent grating vector can compensate the mismatch. Although the physics of QPM has been known since 1962 [4] technological difficulties have been overcome only recently and stable QPM structures have been developed [5].
Children of addiction: research, health and public policy issues. (2000)

This book reports important original research, and the individual papers included are consistently well written. They reflect on the larger social implications of the research undertaken, as well as the biological and psychological effects on the children involved. It will be useful in a broad array of courses on Alcoholism and/or Drugs and Behavior at the graduate level in schools of education, medicine, psychology or psychiatry, and public health or policy.
Non-Volatile Photonic Weights and their Impact on Photonic Reservoir Computing Systems (2019)

Reservoir computing (RC) is a promising implementation of a non-von Neumann computing architecture. It is well-suited to solve time-dependent and dynamic problems like speech recognition or bitwise operations. In principal integrated photonic RC offers energy-efficient, high-speed signal processing capabilities. However, current photonic RC systems perform the linear combination of the complex reservoir states in software. Software weights are ideal (high precision, no drift), but limit the processing speed and energy efficiency of the RC system. Here, we discuss a hardware implementation of photonic weights compatible with silicon photonic RC architectures. First, we demonstrate non-volatile synaptic weights based on ferroelectric barium titanate (BTO) thin films. Second, we explore how imperfections in these hardware weights impact the reservoir performance.
Treatment of Acute Hepatitis C with Interferon Alfa-2b (2001)

Treatment of acute hepatitis C with interferon alfa-2b prevents chronic infection.
<title>Composite smart materials using high-volume microelectronics fabrication techniques</title> (1995)

Smart materials, containing sensors, actuators and processing electronics, are of great potential use in defense and commercial applications from acoustic stealth to medial imaging. While 1:3 composites using PZT rods are now available commercially in limited quantities, composites with individually addressable actuator and sensor arrays are not, nor have conditioning and processing electronics been embedded in the same material. There are several technical and cost reasons for this, including the complexity of interconnections, capacitance of individual elements, thermal dissipation, and the expense of fabricating the material. We have been developing composite materials comprising arrays of miniature actuators fabricated using surface mount capacitor technology, and amenable to automated fabrication using `pick and place' techniques. Miniature actuators with up to 0.1% strain, and operating at 30 V bias and ac swing of +/- 30 V have been fabricated, and placed in 10-by- 10 actuator arrays on Kapton sheets on which circuits have been printed. The arrays were then `potted' in RTV liquid rubbers. Individual actuator motion and multiple actuator influence functions were measured as a function of applied voltage and adjacent actuator motion. These results, along with in-water performance (source level and directivity), are presented.
Exposure to Phthalates Affects Calcium Handling and Intercellular Connectivity of Human Stem Cell-Derived Cardiomyocytes (2015)

Phthalates can affect the normal physiology of human cardiomyocytes, including DEHP elicited perturbations in cardiac calcium handling and intercellular connectivity. Our findings call for additional studies to clarify the extent by which phthalate exposure can alter cardiac function, particularly in vulnerable patient populations who are at risk for high phthalate exposure.
Ozone treatment rapidly activates MAP kinase signalling in plants (2000)

Brief exposure to ozone, a potent cross-inducer of plant stress responses, leads within minutes to activation of an ERK-type MAP kinase (approximately 46 kDa) in tobacco. This activation process is calcium-dependent and can be blocked both by free radical quenchers and by a specific inhibitor of MEK-1 (MAPKK). Hydrogen peroxide and superoxide anion radicals can substitute for ozone as the activation stimulus, which does not appear to require salicylate as an intermediary. The properties of the ozone-induced MAPK suggest that it may be SIPK (salicylate-induced protein kinase), a tobacco MAPK that is activated by a variety of stress treatments. The ability of ozone to activate SIPK indicates that this protein kinase acts as a very early transducer of redox stress signals in plant cells.
Analysis of the Noise Correlation in MRI Coil Arrays Loaded With Metamaterial Magnetoinductive Lenses (2014)

A numerical method is shown for calculating the noise correlation coefficient in arrays of magnetic resonance imaging (MRI) coils loaded with capacitively-loaded ring metamaterial lenses, and in the presence of a conducting half-space resembling a sample. This numerical method is validated by comparison with experimental results obtained in two different experimental procedures for double check: noise resistance measurements with a network analyzer and noise correlation measurements in an MRI system. It is found that, for practical array configurations such as overlapping coils or capacitively-decoupled coils, the noise correlation coefficient turns negative for coils loaded with metamaterial lenses. In particular, the analysis is carried out with metamaterial structures known as magnetoinductive lenses, which have been demonstrated in previous works to improve the signal-to-noise ratio of MRI coils. Results are also shown to demonstrate that negative noise correlations have as an effect the improvement of the g-factor in coil arrays for parallel MRI.
Emergent use of retrograde left ventricular support in patients after transcatheter aortic valve replacement (2012)

Transcatheter aortic valve replacement (TAVR) is currently a therapeutic alternative to open aortic valve replacement for high-risk patients with severe symptomatic aortic valve stenosis. The procedure is associated with some life-threatening complications including circulatory collapse which may require temporary hemodynamic support. We describe our experience with the use of the Impella 2.5 system to provide emergent left ventricular support in cases of hemodynamic collapse after TAVR with the Edwards SAPIEN prosthesis.
ChemInform Abstract: TRANSITION METAL‐CATALYZED SYNTHESIS OF ORGANIC ACIDS BY CHELATION‐PROMOTED REGIOSELECTIVE DOUBLE BOND INSERTION (1982)

Abstract E‐β‐Bromstyrol (I) reagiert in Gegenwart von Rhodium‐ oder Nickel‐Triphenylphosphin‐Katalysatoren mit dem Kaliumsalz der ungesättigten Carbonsäure (II) zu Isomerengemischen der Phenylhexadiensäuren (III).
3D Face Recognition Using Affine Integral Invariants (2006)

A new 3D face representation and recognition approach is presented in this paper. Two sets of facial curves are extracted from a face range image, and a novel facial feature representation, the affine integral invariant, is introduced to mitigate the effect of pose on the facial curves. A human face is shown to be representable by a small subset of those affine integral invariant curves. A recognition procedure based on the discriminant analysis and Jensen-Shannon divergence analysis is proposed. Substantiating examples are provided with an achieved classification accuracy of 92.57%
Detection of HBeAg and anti‐HBe in acute hepatitis B by a sensitive radioimmunoassay (1978)

A solid-phase radioimmunoassay using anti-HBe-coated polysterence beads and iodine-125-labeled anti-HBe of human origin was developed for the detection of HBeAg. Anti-HBe could be determined by a blocking test. Both assays were about 500-fold more sensitive than immunodiffusion. Few nonspecific positive results for HBeAg could be recognized in the anti-HBe test by increase in cpm over that of the negative control. HBeAg was not found in acute hepatitis A and non A-non B hepatitis or in a control group of accident patients. On admission to the hospital 12 of 48 (25%) acute hepatitis B patients from Greece and 17 of 20 (85%) acute hepatitis B patients from Germany were HBeAg-positive. All 39 initially HBeAg negative sera were already anti-HBe positive. Tests of the acute stage and follow-up sera of the 20 German patients indicated that HBeAg is regularly present in the incubation period and early acute phase of hepatitis B. After onset of disease the antigen is cleared from the serum very rapidly in uncomplicated cases and is usually followed by the appearance of anti-HBe. Like anti-HBc, anti-HBe can serve as a tool for the diagnosis of hepatitis B after the disappearance of HBsAg.
The Condition of the Turking Class: Are Online Employers Fair and Honest? (2010)

Online labor markets give people in poor countries direct access to buyers in rich countries. Economic theory and empirical evidence strongly suggest that this kind of access improves human welfare. However, critics claim that abuses are endemic in these markets and that employers exploit unprotected, vulnerable workers. I investigate part of this claim using a randomized, paired survey in which I ask workers in an online labor market (Amazon Mechanical Turk) how they perceive online employers and employers in their host country in terms of honesty and fairness. I find that, on average, workers perceive the collection of online employers as slightly fairer and more honest than offline employers, though the effect is not significant. Views are more polarized in the online employer case, with more respondents having very positive views of the online collection of employers.
Surface Alterations of Mammalian Cells upon Ionizing Radiation as Detected by a Lectin-binding Technique (1981)

X-irradiation in the dose range 0.25--5 Gy induces very early dose-dependent and temporary functional alterations in the plasma membranes of murine blood cells detected by a lectin (concanavalin A)-binding technique. The irradiated erythrocytes bind 3H-concanavalin A during the first 3 hours after 0.45--4.5 Gy X-irradiation to a greater extent than the controls. The lymphocytes also react with an increased binding between 0.45 and 0.9 Gy, but a remarkable decrease is observed with 2.26 and 4.5 Gy. The platelets proved to be the most sensitive. The levels of bound radioactivity for the total platelet population and for the separated subpopulation of 'young' cells were respectively increased by a factor of four and more, after 1 Gy irradiation. The functional stimulation of plasma membranes of 'young' platelets occurred below 2 Gy, while the amount of lectin bound to 'aged' cells only increased at doses above 2 Gy.
Lohnt sich die Asservierung von Gallekultur bei der endoskopischen retrograden Cholangio-pankreatographie (ERCP)? Mikrobiologische Analyse der entnommenen Gallekulturen und ihre klinischen Implikationen (2020)

Einleitung Die Cholangitis als Folge einer malignen Stenose oder einer Choledocholithiasis stellt eine häufige Indikation zur ERCP dar. Die Asservierung von Galle bei der ERCP ist theoretisch essenziell für die Identifikation der ursächlichen Pathogenen und die Steuerung der klinischen Entscheidung, in Anbetracht der größtenteils bei Cholangitis negativ ausfallenden Blutkulturen.
ChemInform Abstract: Cp<sub>2</sub>TiCl<sub>2</sub>‐Catalyzed Pinacol‐Type Coupling of Aliphatic Aldehydes by Use of Zinc and Chlorosilane. (1998)

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.