gebhart/patrepeval huggingface dataset:
Triplet States with Unusual Spin Polarization Resulting from Radical Ion Pair Recombination at Short Distances (1999)

ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTTriplet States with Unusual Spin Polarization Resulting from Radical Ion Pair Recombination at Short DistancesGary P. Wiederrecht, Walter A. Svec, Michael R. Wasielewski, Tamar Galili, and Haim LevanonView Author Information Chemistry Division, Argonne National Laboratory Argonne Illinois, 60439-4831 Department of Chemistry, Northwestern University Evanston, Illinois 60208-3113 Department of Physical Chemistry and The Farkas Center for Light-Induced Processes The Hebrew University of Jerusalem Jerusalem 91904, Israel Cite this: J. Am. Chem. Soc. 1999, 121, 33, 7726–7727Publication Date (Web):August 6, 1999Publication History Received1 June 1999Revised14 July 1999Published online6 August 1999Published inissue 1 August 1999https://doi.org/10.1021/ja991828sCopyright © 1999 American Chemical SocietyRIGHTS & PERMISSIONSArticle Views554Altmetric-Citations40LEARN 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 InReddit Read OnlinePDF (48 KB) Get e-AlertscloseSupporting Info (1)»Supporting Information Supporting Information SUBJECTS:Anions,Electron paramagnetic resonance spectroscopy,Phosphorescence,Quantum mechanics,Recombination Get e-Alerts
Low Detection Rate of Craniocervical Arterial Dissection in Children Using Time-of-Flight Magnetic Resonance Angiography: Causes and Strategies to Improve Diagnosis (2009)

Craniocervical arterial dissection is a frequent cause of childhood arterial ischemic stroke requiring prompt diagnosis and treatment. However, there is no universal guideline for diagnostic cerebrovascular imaging in children. We assessed the role of time-of-flight magnetic resonance angiography in diagnosing craniocervical arterial dissection. We included children (1 month to 18 years) with craniocervical arterial dissection and ischemic stroke from January 1998 to June 2007. Institutional protocol required magnetic resonance imaging (MRI)/ magnetic resonance angiography for all ischemic stroke cases and conventional cerebral angiography if magnetic resonance angiography showed any arteriopathy. Among 233 ischemic stroke cases, craniocervical arterial dissection was diagnosed in 13 patients (5.6%; 10 males), with a mean age of 7.5 years. Initial time-of-flight magnetic resonance angiography missed dissection in 8 patients (61.5%) because the neck vessels were not scanned (n = 2), of suboptimal technique (n = 3), and of diagnostic error (n = 3). T1 fat-saturated MRI and contrast-enhanced magnetic resonance angiography were not performed in 12 patients. If suspicion for arterial dissection is high, T1 fat-saturated neck imaging and contrast-enhanced magnetic resonance angiography should be considered to maximize detection.
Locally optimal navigation among movable obstacles in unknown environments (2014)

Mobile manipulators and humanoid robots should be able to utilize their manipulation capabilities to move obstacles out of their way. This concept is captured within the domain of Navigation Among Movable Obstacles (NAMO). While a variety of NAMO algorithms exists, they typically assume full world knowledge. In contrast, real robot systems only have limited sensor range and partial environment knowledge. In this work we present the first NAMO system for unknown environments capable of handling a large set of possible object motions and arbitrary object shapes while guaranteeing optimal decision making for the given knowledge. We demonstrate empirical results with up to 70 obstacles.
Improved performance of multi-pulse current and voltage source converters by means of a modified SHE modulation technique (2003)

Medium voltage AC drives use multi-pulse, multi-cell or multi-level power converter topologies in order to meet the power quality requirements. In fact, they can easily cancel out low order unwanted harmonics while keeping an even distribution of the load power through out the power semiconductors. Multi-pulse configurations based on active switches are used at the AC/DC stage in order to control the fundamental current component. This allows the control of the power sent to the load while operating at reduced current distortion and unity displacement power factor. For instance, in a 12-pulse configuration, the fundamental component control could be achieved by introducing a chopping angle at the gating pattern as indicated by the selective harmonic elimination technique. Thus, the configuration can handle the fundamental component at expense of the injection of the 11/sup th/ and 13/sup th/ harmonics into the AC system and the 12/sup th/ harmonic to the load, as the lowest unwanted harmonics. This paper proposes that by adding just one extra chopping angle at the gating pattern level, the first unwanted low frequency harmonic is the 24/sup th/. This improvement is achieved without any penalties in the AC waveforms. In general, for a n-pulse converter, the lowest unwanted harmonic is the (2/spl middot/n)/sup th/ harmonic. Simulated and experimental results confirm the theoretical considerations.
Doping nanocrystals to manipulate their optical properties (2013)

For decades, the size-dependent optical properties of semiconductor nanocrystals have been explored to elucidate their fundamental electronic nature and develop their potential for optoelectronic devices. Recently, substitutional doping has emerged as a complementary strategy by which new optical characteristics can be introduced to colloidal nanocrystals. I will describe two classes of doped nanocrystals with distinctive optical properties. Nanocrystals doped with combinations of lanthanide ions can emit visible light following absorption of multiple IR photons. This upconversion process occurs by way of energy transfer between nearby ions. Meanwhile, semiconductor nanocrystals doped degenerately with heterovalent ions can exhibit plasmon resonance absorption tunable across the mid- and near-IR.
Compound heterozygous mutations in the luteinizing hormone receptor signal peptide causing 46,XY disorder of sex development (2019)

Testosterone production by the fetal testis depends on a functional relationship between hCG and the LH/chorionic gonadotropin receptor (LHCGR). Failure of the receptor to correctly respond to its ligand leads to impaired sexual differentiation in males. A phenotypically female patient with pubertal delay had a 46,XY karyotype and was diagnosed with 46,XY disorder of sex development (DSD). Novel compound heterozygous LHCGR mutations were found in the signal peptide: a duplication p.L10_Q17dup of maternal origin, and a deletion (p.K12_L15del) and a p.L16Q missense mutation of paternal origin. cAMP production was very low for both the deletion and duplication mutations and was halved for the missense mutant. The duplication and missense mutations were both expressed intracellularly, but at very low levels at the cell membrane; they were most likely retained in the endoplasmic reticulum. The deletion mutant had a very limited intracellular expression, indicating impaired biosynthesis. There was reduced expression of all three mutants, which was most marked for the deletion mutation. There was also decreased protein expression of all three mutant receptors. In the deletion mutation, the presence of a lower-molecular-weight band corresponding to LHCGR monomer, probably due to lack of glycosylation, and a lack of bands corresponding to dimers/oligomers suggests absent ER entry. This novel case of 46,XY DSD illustrates how different LHCGR signal peptide mutations led to complete receptor inactivation by separate mechanisms. The study underlines the importance of specific regions of signal peptides and expands the spectrum of LHCGR mutations.
Formation of copper patterns on poly(tetrafluoroethylene) via radiation controlled chemical etching and chemical-vapor deposition (1992)

Patterned copper films have been deposited on poly(tetrafluoroethylene) (PTFE) in a three-step additive process. In the first step, a pattern is produced by cross linking the PTFE surface in selected areas by irradiation with either electrons or x rays at dose levels below those that are either visually or spectroscopically apparent. The pattern is then developed by wet chemical etching in the second step in which only the nonirradiated areas are appreciably etched with sodium naphthalenide. In the final step, chemical-vapor deposition using the precursor (hexafluoroacetylacetonato) Cu(I) trimethylphosphine at 200 °C results in Cu deposition only on the nonirradiated areas of the surface. The Cu films are continuous with a resistivity of 4 μΩ cm, high purity as determined by Auger electron spectroscopy and x-ray photoelectron spectroscopy, and are sufficiently adherent to survive a Scotch tape test. Patterned feature sizes as small as 35 μm can be produced.
Candidose oropharyngée récidivante à Candida albicans et à Candida dubliniensis chez une patiente infectée par le VIH : Aspects mycologiques, génotypiques et immunologiques (2008)

Candida dubliniensis est une levure isolee principalement de patients infectes par le VIH et recemment identifiee comme une nouvelle espece grâce a des techniques moleculaires. C. dubliniensis est souvent identifie comme Candida albicans car les deux especes presentent des caracteristiques phenotypiques communes : filamentation positive, formation de chlamydospores, profils auxanographiques tres proches. La virulence accrue de C. dubliniensis, en raison d'une production superieure d'aspartyl proteases (Sap), a ete demontree in vitro. Nous rapportons le cas d'une patiente de 37 ans, au stade B de l'infection VIH presentant des episodes multiples de candidose oropharyngee (COP), malgre la restauration de son immunite cellulaire par une tritherapie antiretrovirale et plusieurs traitements par le fluconazole. Cette patiente a ete incluse en aout 1998 pour une periode d'un an dans un etude longitudinale de la reponse humorale muqueuse anti-Candida. Le titrage des anticorps salivaires de type IgG, IgA et IgM diriges contre un antigene Sap6 a ete effectue sur des prelevements salivaires realises mensuellement. Chez cette patiente, les titres d'anticorps etaient tres superieurs a ceux observes chez 16 autres patients infectes par le VIH (5 avec COP a C. albicans et Il sans COP). Les prelevements mycologiques realises mensuellement etaient tous positifs, avec une charge fongique elevee. Le typage moleculaire des isolats par analyse du caryotype electrophoretique et detection des profils RAPD (random amplified polymorphic DNA) a montre la presence de deux genotypes differents. L'analyse de la sequence ITS (internai trancribed spacer) de l'ADN ribosomal a permis d'identifier un des deux genotypes comme une souche de C. dubliniensis. Notre observation demontre l'interet des methodes moleculaires pour la mise en evidence de C. dubliniensis dans les candidoses recidivantes au cours de l'infection par le VIH. Elle montre egalement l'existence d'une stimulation importante de la reponse immunitaire humorale locale anti-Sap dans ce type de candidose.
Characterizing Chemically Reactive Thin Layers:  Surface Reaction of [2-[4-(Chlorosulfonyl)phenyl]ethyl]trichlorosilane with Ammonia (2007)

Thin layers of organosilanes on oxidic surfaces are of great interest for various applications including the control of surface properties and immobilization of catalysts and biomolecules and in nanotechnology. In the present work, the reaction of thin layers on silicon oxide consisting of [2-[4-(chlorosulfonyl)phenyl]ethyl]trichlorosilane (CSTS) with ammonia is studied by means of contact angle (CA) measurements, ζ-potential measurements, X-ray photoelectron spectroscopy (XPS), and Fourier-transform infrared spectroscopy (FT-IR). CA measurements are used for a fast monitoring of film quality and as a first probe for the reaction of the CSTS sample with ammonia. The results from XPS measurements show that the chlorine peak of the CSTS molecule disappears completely after the reaction with ammonia and instead a well-resolved nitrogen peak appears. FT-IR spectroscopy in conjunction with theoretical calculations is used to gain a more in-depth understanding of the chemical reaction. The shift of the asymmetric SO vibrational mode during the surface reaction is in line with the theoretical predictions and serves as a proof for the surface reaction to happen. By FT-IR, an additional side reaction of sulfonic acid groups, which are present in the commercial CSTS, to the ammonium sulfonate salt is observed.
CD38 expression on mouse T cells: CD38 defines functionally distinct subsets of αβ TCR+CD4−CD8−thymocytes (1995)

We have examined CD38 expression on mouse lymphocytes using the rat mAb NIM-R5 and demonstrate that CD38 expression is restricted to approximately 8% of thymocytes. Although CD38 is absent from the majority of CD4+CD8- and CD4-CD8+ T cells, we detected a strong correlation between CD38 expression and alpha beta+CD4-CD8- T cells in the thymus, with nearly 80% of alpha beta TCR+CD4-CD8- thymocytes being CD38+. Using heat stable antigen (HSA) and CD38, we divided alpha beta+CD4-CD8- thymocytes into four subsets: HSA+CD38-, HSA-CD38hi, HSA-CD38low and HSA-CD38-. Two established characteristics of alpha beta TCR+CD4-CD8- cells, bias towards V beta 8.2 TCR expression and high levels of IL-4 production, were used to establish a possible relationship between the above thymocyte subsets. Our present data show that the HSA+CD38- subset is not biased towards V beta 8.2 TCR expression whereas the HSA-CD38- subset does show this bias (approximately 47%). Neither of these subsets make IL-4 upon CD3 mediated stimulation. In contrast, the CD38+ subsets are heavily biased toward V beta 8.2 expression and produce large amounts of IL-4 upon stimulation, particularly the CD38low cells. Taken together, these data suggest that these four subsets represent various stages of a possible differentiation pathway for alpha beta TCR+CD4-CD8- cells, with the HSA+CD38- subset being the most immature while the HSA-CD38low subset is the most functionally mature. These characteristics support the view that alpha beta TCR+CD4-CD8- T cells represent an independent lineage with a distinct, but as yet obscure, role in immunity.
A Causality Analysis for Nonlinear Classification Model with Self-Organizing Map and Locally Approximation to Linear Model (2019)

In terms of nonlinear machine learning classifier such as Deep Learning, machine-learning model is generally a black box which has issue not to be clear the causality among its output classification and input attributes. In this paper, we propose a causality analysis method with self-organizing map and locally approximation to linear model. In this method, self-organizing map generates the cluster of input data and local linear models for each node on the map provides explanation of the generated model. Applying this method to the member rank prediction model based on Deep Learning, we validated our proposed method.
Control of the Copolymer Composition in Suspension Copolymerization Reactions (2004)

A new strategy for control of the copolymer composition is proposed for suspension copolymerizations. The control strategy assumes that one of the monomers is soluble in the continuous (aqueous) phase, as in the case of vinyl acetate (VAc)/acrylic acid (AA) copolymerizations. First, a hypothetical suspension copolymerization reaction is studied through simulation in order to illustrate the main features of the proposed control scheme. Then, the control strategy is implemented experimentally for actual control of the copolymer composition during VAc/AA suspension copolymerizations. The strategy is based on a detailed model developed to describe the process behavior and the AA partitioning between the organic phase and the aqueous phase, which is a fundamental point for the successful description of both conversion and copolymer composition. The proposed model was used to design monomer feed rate profiles in order to keep the copolymer composition constant throughout the batch. It is shown that the proposed control procedure is indeed able to keep the copolymer composition constant throughout the batch, despite the huge differences of reactivity between the monomer species.
Antimetastatic gene expression profiles mediated by retinoic acid receptor beta 2 in MDA-MB-435 breast cancer cells (2005)

Antimetastatic RARbeta2 signalling, direct or indirect, results in an elevation of expression for genes such as tumor-cell antigens (CTAG1 and CTAG2), those involved in innate immune response (e.g., RIG-I/DDX58), and tumor suppressor functions (e.g., TYRP1). Genes whose expression is diminished by RARbeta2 signalling include cell adhesion functions (e.g, CD164) nutritional or metabolic processes (e.g., FABP6), and the transcription factor, JUN.
Operative diagnosis for revision total hip arthroplasty is associated with patient-reported outcomes (PROs) (2013)

Operative diagnosis is independently associated with ADL limitations, but not pain, at 2-years after revision THA. Patients should be informed of the risk of poorer short-term outcomes based on their diagnosis.
C646 inhibits G2/M cell cycle-related proteins and potentiates anti-tumor effects in pancreatic cancer (2021)

The activity of histone acetyltransferases (HATs) plays a central role in an epigenetic modification in cooperation with HDACs (histone deacetyl transferases). It is likely that malfunction of this enzymatic machinery controlling epigenetic modification is relevant to carcinogenesis and tumor progression. However, in pancreatic cancer, the clinical relevance of HAT activity and histone acetylation has remained unclear. We identified that H3 acetylation was expressed in all pancreatic cancer patients, indicating that H3 acetylation may be essential in pancreatic cancer cells. We also found that the HAT inhibitor C646 augmented anti-tumor effects in vitro by inhibiting cell proliferation and cell cycle progression concomitantly with suppression of acetylated H3K9 and H3K27 expression. C646 or p300 and CBP (CREB-binding protein)-specific siRNA treatment inhibited the transcription of the G2/M cell cycle regulatory proteins cyclin B1 and CDK1 (cyclin-dependent kinase 1). C646 treatment also inhibited tumor growth in vivo in a xenograft mouse model. C646 could be an effective therapeutic agent for pancreatic cancer. The epigenetic status of pancreatic cancers based on their level of histone H3 acetylation may influence patient survival. Epigenetic stratification according to H3K27 acetylation could be useful for predicting disease prognosis as well as the therapeutic efficacy of C646 in pancreatic cancer.
Clarithromycin attenuates IL-13–induced periostin production in human lung fibroblasts (2017)

Clarithromycin suppressed IL-13-induced periostin production in human lung fibroblasts, in part by inhibiting STAT6 phosphorylation. This suggests a novel mechanism of the immunomodulatory effect of clarithromycin in asthmatic airway inflammation and fibrosis.
HEV Applications for Military Vehicles (2011)

Although it can be considered to be a part of off-road applications, military vehicles involve special situations, unlike civilian applications. Example is very high cost to carry fuel to the field of operation. Hence any fuel savings can highly impact the cost and agility of movement. Indirect benefit like using multiple vehicles to form part of a power grid is also indicated. Various vehicular architectures are discussed. It is indicated that series hybrid architecture is likely to be heavier than its parallel counterpart; hence this fact itself might also affect fuel economy to some extent. Hybridization can impact different vehicle platforms in different ways. A method of quantification leading to deployment decision, i.e. which vehicles could potentially be benefitted by hybridization, is provided. This mechanism of deployment decision indicated in the chapter is considered to be new for such situations, and takes a scientific viewpoint, instead of subjective type of decision process. Non-ground applications which can be benefitted through hybridization, are discussed. These can include various applications like electromagnetic launcher, naval, certain small sized airborne vehicles, and also the dismounted soldier. Since military application requires ruggedization of various components, the chapter includes a discussion on that at the end.
Dual-mode transport of molecular oxygen in a membrane containing a cobalt porphyrin complex as a fixed carrier (1987)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDual-mode transport of molecular oxygen in a membrane containing a cobalt porphyrin complex as a fixed carrierHiroyuki. Nishide, Manshi. Ohyanagi, Osamu. Okada, and Eishun. TsuchidaCite this: Macromolecules 1987, 20, 2, 417–422Publication Date (Print):February 1, 1987Publication History Published online1 May 2002Published inissue 1 February 1987https://pubs.acs.org/doi/10.1021/ma00168a032https://doi.org/10.1021/ma00168a032research-articleACS PublicationsRequest reuse permissionsArticle Views446Altmetric-Citations94LEARN 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