gebhart/patrepeval huggingface dataset:
Removal of 2,4-Dichlorophenolyxacetic acid (2,4-D) herbicide in the aqueous phase using modified granular activated carbon (2014)

In conclusion, granular activated carbon modified with acid is an appropriate method for reducing the herbicide in the polluted water resources.
Ultratrace Measurements of Nucleic Acids by Baseline-Corrected Adsorptive Stripping Square-Wave Voltammetry (1999)

The direct and reliable electrochemical detection of DNA is of paramount importance to the development of modern DNA hybridization chips, for the detection of nucleic acids following their electrophoretic separations, or for the sensing of DNA damage and interactions. Such solid electrode voltammetric measurements of nucleic acids have been traditionally hampered by the large solvent decomposition background current that obscures the oxidation signals of the purine nucleobases. This paper reports on the use of adsorptive stripping square-wave voltammetry, in connection with the "moving average baseline correction" approach, for monitoring ultratrace levels of DNA and RNA. Compared to other baseline-fitted or background-subtraction protocols, the moving average baseline scheme is particularly effective in isolating the small purine nucleobase peaks, which appear as small shoulders on the steep background discharge contribution. The remarkably flat baseline thus obtained (up to extreme potentials) leads to a dramatic lowering of the detection limits to the femtomole level and to a performance that compares favorably with that of computerized chronopotentiometric measurements of nucleic acids. Combined with the speed of square-wave voltammetric measurements, such developments should expand the role of voltammetry in DNA diagnostics and nucleic acid research.
Thio-Claisen Rearrangements. An Asymmetric Synthesis of 4,4-Disubstituted Cyclohexenones with Vicinal Quaternary and Tertiary Stereocenters (1994)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThio-Claisen Rearrangements. An Asymmetric Synthesis of 4,4-Disubstituted Cyclohexenones with Vicinal Quaternary and Tertiary StereocentersPaul N. Devine and A. I. MeyersCite this: J. Am. Chem. Soc. 1994, 116, 6, 2633–2634Publication Date (Print):March 1, 1994Publication History Published online1 May 2002Published inissue 1 March 1994https://doi.org/10.1021/ja00085a059RIGHTS & PERMISSIONSArticle Views526Altmetric-Citations38LEARN 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 PDF (223 KB) Get e-AlertsSupporting Info (2)»Supporting Information Supporting Information Get e-Alerts
Psoralen-protein photochemistry — a forgotten field (1995)

8-Methoxypsoralen in combination with long wavelength ultraviolet light is employed for the treatment of several cutaneous disorders, such as psoriasis, vitiligo and mycosis fungoides. It is common to attribute the efficacy of the photochemotherapy to the formation of psoralen DNA photoadducts. Thus, the main research effort has been directed towards the elucidation of nucleic acid photochemistry and related subsequent events (mutagenicity, toxicity). However, psoralens have been shown to undergo photoaddition reactions with other cellular components. In this review the status of psoralen-DNA photobiology is briefly summarized. The main focus, however, is on a survey of psoralen photochemical modification of proteins and the ways by which these additional photobiological events can impact the antigenicity and potentially immunogenicity of treated cells. Some preliminary results show the extent of psoralen-amino acid photoadduct formation and their impact on enzymatic processing.
Estrellas evolucionadas con planetas : abundancias químicas y propiedades planetarias (2015)

Tesis (Doctor en Astronomía)--Universidad Nacional de Córdoba, Facultad de Matemática, Astronomía y Física, 2015.
Amplificateur de puissance compact à 60GHz à base de lignes à ondes lentes (2013)

National audience
Differential effects of beta and gamma interferons on expression of major histocompatibility complex antigens and intercellular adhesion molecule‐1 in cultured fetal human astrocytes (1995)

We investigated the modulatory effects of human interferon beta (IFN-beta) and gamma (IFN-gamma) on expression of class I and II major histocompatibility complex (MHC) antigens and intercellular adhesion molecule-1 (ICAM-1) in fetal human astrocytes in culture using flow cytometry and immunocytochemistry. Under the baseline condition, class I MHC antigen and ICAM-1 were expressed in a moderate number (23 to 76%) of astrocytes, whereas class II MHC antigen was expressed in only a small number (0.3 to 8%) of astrocytes. Following a 72-hour treatment with IFN-gamma (10 to 100 U/ml), expression of all three antigens increased greatly. Expression of class I MHC antigen was also elevated by exposure to IFN-beta (10 and 100 IU/ml). However, IFN-beta did not significantly induce expression of class II MHC antigen or ICAM-1. Furthermore, IFN-beta significantly reduced IFN-gamma-induced expression of class II MHC antigen but not of class I MHC antigen or of ICAM-1. The differential effects of IFN-beta and IFN-gamma on expression of class I and II MHC antigens and ICAM-1 in fetal human astrocytes suggest that interferons serve as modulators of astrocyte function at sites of inflammation in the human CNS.
Simultaneous determination of major type A and B trichothecenes, zearalenone and certain modified metabolites in Finnish cereal grains with a novel liquid chromatography-tandem mass spectrometric method (2015)

A reliable and sensitive liquid chromatography-tandem mass spectrometric method was developed for the simultaneous quantitative determination in cereals of the Fusarium mycotoxins HT-2 toxin, T-2 toxin, deoxynivalenol, nivalenol and zearalenone, as well as the modified metabolites 3-acetyl-deoxynivalenol, α-zearalenol, β-zearalenol, deoxynivalenol-3-glucoside, HT-2-3-glucoside, nivalenol-3-glucoside, zearalenone-14-glucoside, zearalenone-14-sulphate, zearalenone-16-glucoside, α-zearalenol-14-glucoside and β-zearalenol-14-glucoside. The 'dilute and shoot' approach was used for sample preparation after extraction with acetonitrile:water:acetic acid (79:20:1, v/v/v). Separation was carried out using reversed-phase liquid chromatography, and detection was performed using tandem mass spectrometry in the selected reaction monitoring mode. The method was in-house validated according to performance characteristics, established in Commission Regulation EC No 401/2006 and Commission Decision EC No 657/2002, prior to its application in a nationwide survey for the analysis of barley, oat and wheat samples (n = 95) harvested in Finland during 2013. Deoxynivalenol and its glucosylated form were the most abundant of the analytes, being detected in 93 and 81 % of the samples, respectively. Concentrations of deoxynivalenol were unusually high in 2013, especially in oats, with some cases exceeding the maximum legislative limits for unprocessed oats placed on the market for first-stage processing. All modified mycotoxins analysed were detected, and the natural occurrence of some of these compounds (e.g. zearalenone-16-glucoside and nivalenol-3-glucoside) in barley, oats and/or wheat was documented for the first time.
Extracorporeal Membrane Oxygenation With Subclavian Artery Cannulation in Awake Patients With Pulmonary Hypertension (2014)

Pulmonary hypertension (PH) is a challenging disease process to manage. Respiratory and hemodynamic changes that accompany general anesthesia lead to a significant risk of cardiovascular collapse. Certain cases of decompensated PH require extracorporeal membrane oxygenation (ECMO) support as either a bridge to lung transplantation or bridge to recovery. Performing ECMO cannulation without intubation or general anesthesia in these patients may be safer given the severity of their underlying disease process. We present three cases of upper body ECMO cannulation performed on patients with pulmonary hypertension while awake and without mechanical ventilation.
Remote Raman Measurement Techniques (1981)

The use of laser Raman measurement techniques in remote sensing applications is surveyed. A feasibility index is defined as a means to characterize the practicality of a given remote Raman measurement application. Specific applications of Raman scattering to the measurement of atmospheric water vapor profiles, methane plumes from liquid natural gas spills, and subsurface ocean temperature profiles are described. This paper will survey the use of laser Raman measurement techniques in remote sensing applications using as examples specific systems that the Computer Genetics Corporation (CGC) group has developed and engineered.
MOLECULAR ROTATION IN SUPERFLUID $^{4}He$ NANODROPLETS: THE VALIDITY OF A HYDRODYNAMIC MODEL (2000)

$^{a}$C. Callegari, A. Conjusteau, I. Reinhard, K.K. Lehman, G. Scoles, and F. Dalfovo, Phys. Rev. Lett. 83, 5058 (1999); ibid. 84, 1848(E) (2000). $^{b}$E. Draeger and D.M. Ceperley, private communication.
Polarized 3D Raman and nanoscale near-field optical microscopy of optically inscribed surface relief gratings: chromophore orientation in azo-doped polymer films (2013)

We have used polarized confocal Raman microspectroscopy and scanning near-field optical microscopy with a resolution of 60 nm to characterize photoinscribed grating structures of azobenzene doped polymer films on a glass support. Polarized Raman microscopy allowed determining the reorientation of the chromophores as a function of the grating phase and penetration depth of the inscribing laser in three dimensions. We found periodic patterns, which are not restricted to the surface alone, but appear also well below the surface in the bulk of the material. Near-field optical microscopy with nanoscale resolution revealed lateral two-dimensional optical contrast, which is not observable by atomic force and Raman microscopy.
How the Forbes "America's Best Employers for Diversity" Listing Actually Tells Us Nothing About Corporate Diversity, Equity and Inclusion: The Case of Maximus (2025)

In this report, we take a detailed look at the methods used to determine the Forbes list of “America’s Best Employers for Diversity.” Based on the principles of survey and social research, we examine the data used, how it was collected, and analyzed to determine the DEI rankings. We look specifically at Maximus as a case study for our assessment. As we will document, this research is deeply flawed on a number of dimensions, and in no way can it be considered a valid assessment of firms' actual efforts at diversity, equity, and inclusion, nor their outcomes.
Characterization of a photosynthetic Euglena strain isolated from an acidic hot mud pool of a volcanic area of Costa Rica1 (2002)

Abstract Conspicuous green patches on the surface of an acidic hot mud pool located near the Rincón de la Vieja volcano (northwestern Costa Rica) consisted of apparently unialgal populations of a chloroplast-bearing euglenoid. Morphological and physiological studies showed that it is a non-flagellated photosynthetic Euglena strain able to grow in defined mineral media at temperatures up to 40 degrees C and exhibiting higher thermotolerance than Euglena gracilis SAG 5/15 in photosynthetic activity analyses. Molecular phylogeny studies using 18S rDNA and GapC genes indicated that this strain is closely related to Euglena mutabilis, another acid-tolerant photosynthetic euglenoid, forming a clade deeply rooted in the Euglenales lineage. To our knowledge this is the most thermotolerant euglenoid described so far and the first Euglenozoan strain reported to inhabit acidic hot aquatic habitats.
Projection Selection Dependency in Binary Tomography (2011)

It has already been shown that the choice of projection angles can significantly influence the quality of reconstructions in discrete tomography. In this contribution we summarize and extend the previous results by explaining and demonstrating the effects of projection selection dependency, in a set of experimental software tests. We perform reconstructions of software phantoms, by using different binary tomography reconstruction algorithms, from different equiangular and non-equiangular projections sets, under various conditions (i.e., when the objects to be reconstructed undergo slight topological changes, or the projection data is affected by noise) and compare the results with suitable approaches. Based on our observations, we reveal regularities in the resulting data and discuss possible consequences of such projection selection dependency in binary tomography.
Autonomous driving in structured and unstructured environments (2006)

Autonomous vehicles are being used increasingly often for a range of tasks, including automated highway driving and automated parking. Such systems are typically either specialized for structured environments and depend entirely on such structure being present in their surroundings, or are specialized for unstructured environments and ignore any structure that may exist. In this paper, we present a hybrid autonomous system that recognizes and exploits structure in the environment in the form of driving lanes, yet also navigates successfully when no such information is present. We believe such an approach is more flexible and more robust than either of its sub-components alone. We demonstrate the effectiveness of our system on both marked roads and unmarked lots.
FTY720 BLOCKS ALLOGRAFT REJECTION BY SEQUESTRATION OF T AND B LYMPHOCYTES IN PERIPHERAL LYMPHOID COMPARTMENTS (1999)

228 Purpose: The new immunosuppressive agent FTY720 is a synthetic analog of a compound isolated from the fungus Isaria sinclairii. Although FTY720 blocks allograft rejection in mice, rats, and monkeys, its exact mechanism of action remains controversial. The present study examined the effect of FTY720 on in vivo homing of T and B lymphocytes in mice. Methods: T, CD4+, CD8+, and B lymphocytes were obtained from spleens of Balb/c mice and purified on Dynabead colums. Cells were labeled with 5-6-carboxyfluorescein diacetate succinimydl ester (CF) dye. CF-labeled cells were injected twice (days -2 and -1) into mice, prior to a 5-day treatment by oral gavage with 4 or 8 mg/kg FTY720 or with saline (control). Within 24 hours after the last treatment day, FACScan analysis was performed on cells from spleen (SPL), peripheral lymph nodes (PLN), mesenteric lymph nodes (MLN), Peyer's patches (PP), thymus (TY), and peripheral blood (BL). In addition, cells were obtained from mice treated for 7 days with 4.0 or 8.0 mg/kg/day FTY720, and labeled with CF. The results are expressed as the mean number of CF positive cells × 103 ± SD. Results: The total normal number of 5.7 × 103/mm3 lymphocytes in the bloodstream was reduced to 2.2 × 103/mm3 (p<0.03) by 4.0 mg/kg/day and to 1.9 × 103/mm3 (p<0.01) by 8.0 mg/kg/day FTY720. The number of CF-labeled lymphocytes in the bloodstream decreased after treatment with either 4.0 mg/kg (107 ± 24; p<0.03) or 8.0 mg/kg FTY720 (106 ± 13; p<0.03) in comparison to normal controls (466 ± 111). In contrast, the number of CF-labeled lymphocytes increased in PLN from 238 ± 53 in normal to 262 ± 43 in the 4.0 mg/kg and to 377 ± 117 in the 8.0 mg/kg group; in MLN from 599 ± 176 in normal to 828 ± 181 in the 4.0 mg/kg group and to 777 ± 99 in the 8.0 mg/kg group; and in PP from 710 ± 131 in normal to 1058 ± 228 in the 4.0 mg/kg group and to 966 ± 371 in the 8.0 mg/kg group. No significant changes were found in the SPL or TY CF-labeled lymphocyte counts. Similar patterns were observed for T, CD4+, CD8+, and B subsets. In addition, CF-labeled lymphocytes obtained from either 4.0 or 8.0 mg/kg FTY720-treated mice migrated in significantly larger numbers (within 24 hours after i.v. injection) from the bloodstream to PLN, MLN, and PP in comparison to CF-labeled lymphocytes obtained from normal controls: The normal mean of 141 ± 58 in blood decreased to 47 ± 28 in the 4 mg/kg group and to 53 ± 34 in the 8 mg/kg group (both p<0.01), while the PLN increased from 31 ± 10 in normal to 50 ± 20 in the 4 mg/kg group and to 99 ± 40 in the 8 mg/kg group. Conclusion: FTY720 increases homing of T and B lymphocyte subsets from the bloodstream to the peripheral lymphoid tissues.
Characteristics, incidence and outcome of patients admitted to intensive care because of pulmonary embolism (2016)

The incidence of PE requiring admission to ICU has increased over time; its mortality rate remains high, especially in mechanically ventilated patients, and its prognosis has not improved over time. Our findings imply the need for focused research in this high-risk patient group.
Satellite Communications Payload Simulator for Mobile and Fixed Satellite Services (1998)

As the demand for advanced satellite telecommunication services increase, the time to market for deployment of these systems has been significantly reduced. At the same time, there has been a transition from simple transponder ("bent pipe") architecture operating FM/FDMA to more complex digitally switched systems. Both FDMA and TDMA systems are in use and support both analog and digital traffic with increasing emphasis on the latter. Design and test of these newer systems requires more sophisticated tools. To meet the challenging market demand, a universal Baseband and RF/Microwave Communications Payload and System Simulator (COMPASS) that is used to reduce design cycle time, validate payload software models, streamline manufacturing test matrices and study on orbit anomalies has been built and is in operation. This system contains baseband, RF, microwave, antenna and transmission path processing components. COMPASS has the capability to interactively program and reconfigure various traffic models and to load transponder channels for analysis of Mobile Satellite Service (MSS) and Fixed Satellite Service (FSS). This paper highlights some results of nonlinear transponder studies using multi-carrier CW and QPSK signals and describes the COMPASS system.
Ion-Exchanged Calcium from Calcium Carbonate and Low-Rank Coals:  High Catalytic Activity in Steam Gasification (1996)

Interactions between CaCO3 and low-rank coals were examined, and the steam gasification of the resulting Ca-loaded coals was carried out at 973 K with a thermobalance. Chemical analysis and FT-IR spectra show that CaCO3 can react readily with COOH groups to form ion-exchanged Ca and CO2 when mixed with brown coal in water at room temperature. The extent of the exchange is dependent on the crystalline form of CaCO3, and higher for aragonite naturally present in seashells and coral reef than for calcite from limestone. The FT-IR spectra reveal that ion-exchange reactions also proceed during kneading CaCO3 with low-rank coals. The exchanged Ca promotes gasification and achieves 40−60-fold rate enhancement for brown coal with a lower content of inherent minerals. Catalyst effectiveness of kneaded CaCO3 depends on the coal type, in other words, the extent of ion exchange.
Adsorption of Supramolecular Building Blocks on Graphite: A Force Field and Density Functional Theory Study (2011)

Supramolecular building blocks: The adsorption of the oligopyridine isomers 2,4′-BTP and 3,3′-BTP on graphite (see picture) is studied with force field and dispersion-corrected density functional theory (DFT-D) methods. Whereas the used force fields yield different adsorption geometries and strongly varying adsorption energies, the adsorption energy obtained with DFT-D is in rather good agreement with experiment.
IEEE 802.15.3d: First Standardization Efforts for Sub-Terahertz Band Communications toward 6G (2020)

With the ratification of the IEEE 802.15.3d amendment to 802.15.3, a first step has been made to standardize consumer wireless communications in the sub-THz frequency band. IEEE 802.15.3d offers switched point-to-point connectivity with data rates of 100 Gb/s and higher at distances ranging from tens of centimeters up to a few hundred meters. In this article, we provide a detailed introduction to IEEE 802.15.3d and the key design principles beyond the developed standard. We particularly describe the target applications and usage scenarios, as well as the specifics of the IEEE 802.15.3d physical and medium access layers. Later, we present the results of the initial performance evaluation of IEEE 802.15.3d wireless communications. The obtained first-order performance predictions show non-incremental benefits compared to the characteristics of the fifth generation wireless systems, thus paving the way toward the sixth generation THz networks. We conclude the article by outlining the further standardization and regulatory activities on wireless networking in the THz frequency band.
The albino-deletion complex of the mouse: molecular mapping of deletion breakpoints that define regions necessary for development of the embryonic and extraembryonic ectoderm. (1991)

Previous complementation analyses with five (c11DSD, c5FR60Hg, c2YPSj, c4FR60Hd, c6H) of the mouse albino deletions defined at least two genes on chromosome 7, known as eed and exed, which are necessary for development of the embryonic and extraembryonic ectoderm, respectively, of early postimplantation embryos. The region of chromosome 7 containing these two genes has now been accessed at the molecular level by cloning two of the deletion breakpoint-fusion fragments. The c2YPSj breakpoints were isolated by cloning an EcoRI fragment containing a copy of an albino region-specific repeat unique to c2YPSj DNA. Similarly, the c11DSD breakpoints were isolated by cloning a c11DSD EcoRI fragment detected by a unique-sequence probe mapping proximal to the albino-coat-color locus. By mapping the cloned breakpoints relative to the remaining three deletions, the c11DSD distal breakpoint was found to define the distal limit of the region containing eed, whereas the c2YPSj and c6H distal breakpoints were found to define the proximal and distal limits, respectively, of the region containing exed.
Fabrication of Truncated Silicon Pyramid Arrays by Electrochemical Etching (2009)

A periodically ordered, truncated pyramid array of a single-crystal silicon was readily fabricated by simple electrochemical etching of a prepatterned silicon wafer. At potentials higher than the current peak (i(ps)), two reactions based on direct and indirect dissolutions of silicon occurred, which induced a topological variation in a surface profile, resulting in truncated silicon pyramid structures. The morphology of the silicon pyramids were precisely controlled by the electrochemical etching time and the applied voltage from the flat top to the sharp tip. The simple processing, flexibility, cost-effectiveness, and unique pyramid texturing make the silicon array promising for application to optoelectronic devices. (C) 2009 The Electrochemical Society. [DOI:10.1149/1.3231135] All rights reserved.