gebhart/patrepeval huggingface dataset:
Anion exchange and a selectivity scale for elements in sulfuric acid media with a strongly basic resin (1967)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAnion exchange and a selectivity scale for elements in sulfuric acid media with a strongly basic resinF. W. E. Strelow and C. J. C. BothmaCite this: Anal. Chem. 1967, 39, 6, 595–599Publication Date (Print):May 1, 1967Publication History Published online1 May 2002Published inissue 1 May 1967https://pubs.acs.org/doi/10.1021/ac60250a009https://doi.org/10.1021/ac60250a009research-articleACS PublicationsRequest reuse permissionsArticle Views581Altmetric-Citations93LEARN 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
Planting Date Effects on Growth, Yield, and Oil of Irrigated Sunflower<sup>1</sup> (1980)

Abstract Interest in sunflower ( Helianthus annuus L.) as an oilseed crop has greatly increased in the Southern Great Plains since 1974. To effectively manage sunflower for oil production and oil quality, information is needed concerning the effect of various agronomic practices. The objective of this research was to determine the effect of planting date on growth, yield, oil percent, and oil fatty acid concentration of irrigated sunflower. Sunfower ‘Hybrid 896’ seed was planted at about 2‐week intervals from late March to late July or early August from 1975 to 1978 on Pullman clay loam (fine, mixed, thermic Torrertic Paleustoll). Time from planting to emergence was influenced by soil temperature, and ranged from 19 days with early plantings to 5 days with late plantings. The time from planting to the 50% ray flower stage decreased with delayed plantings, except for the last four plantings for which the average was about 59 days. Seed yields were not significantly different with plantings from late March to mid‐June. Yields decreased with plantings after 21 June. Seed soil percent was relatively constant with early plantings, but decreased with plantings after about 29 May; oil yield/ha also decreased with plantings after that date. The oleic and linoleic acid concentrations of the oil were strongly affected by planting date because the different planting dates resulted in seed development during periods of different temperatures. Earlyplanted sunflower matured during hot weather, and the oil had oleic and linolecic acid concentrations of 43 and 45%, respectively. Oil from late‐planted sunflower, which matured during cooler weather, had oleic and linoleic acid concentrations of around 15 and 75% respectively.
57Co-Hematoporphyrin Accumulation by Experimental Tumors (1976)

The in vivo distribution of 57Co-hematoporphyrin in adenocarcinoma BW10232-bearing mice has been studied. Tumor-bearing and normal animals exhibit similar patterns of radioactivity accumulation. Twenty-four hours after the administration of the radiocompound the ratios tumor to blood and tumor to muscle indicate a potential value of this radioactive porphyrin for the detection of some types of tumor.
Electrochemical Study of Bi[sub 2]O[sub 3] and Bi[sub 2]O[sub 2]CO[sub 3] by Means of a Cavity Microelectrode. I. Observed Phenomena and Direct Analysis of Results (2000)

The physical and chemical processes occurring for the electrochemical reduction and oxidation of and can be determined through a direct analysis of the voltammograms recorded from the cavity microelectrode. The voltammogram shows an evolution for around 1 h, which corresponds to the first 80 cycles carried out at . The evolution is due to the sequence of the following concurrent processes: (i) impregnation of the powder and its dissolution in the electrolytical solution, (ii) deposit of porous metal‐Bi during the cathodic scan, and deposit of Bi(III) species during the anodic scan. These processes cause a reconfiguration of the architecture of the powder within the cavity by making the material grains smaller. For the second stage, the voltammograms do not vary any more during the cycling. For the first cathodic scan, the reduction process starts from the bottom of the cavity at the interface Pt/solution only, then it progresses toward the mouth. Contrarily, the oxidation takes place throughout all the grains. During the next cathodic scans, the reduction also starts throughout all the grains when the grains are not entirely oxidized from the preceding anodic scan. © 2000 The Electrochemical Society. All rights reserved.
Microscopic Structure of the Wetting Film at the Surface of Liquid Ga-Bi Alloys (2000)

X-ray reflectivity measurements of the binary liquid Ga-Bi alloy reveal a dramatically different surface structure above and below the monotectic temperature T(mono) = 222 degrees C. A Gibbs-adsorbed Bi monolayer resides at the surface in both regimes. However, a 30 A thick, Bi-rich wetting film intrudes between the Bi monolayer and the Ga-rich bulk for T>T(mono). The wetting film's internal structure, not hitherto measured, is determined with A resolution, showing a concentration gradient not predicted by theory and a highly diffuse interface with the bulk phase.
<title>Abductive networks</title> (1990)

Is the process of inferring facts using neural networks a unique form of reasoning? Is there really a different type of reasoning separate and distinct from deduction and induction? Does there exist a single fundamental form of inference for reasoning symbolically, qualitatively, quantitatively, possibilistically (about "fuzzy" concepts), and probabilistically? YES, it is called abduction. This paper presents abduction and abductory induction. Abduction not only classifies the distinct type of reasoning performed when neural networks are applied, but gives a logical framework for expanding current neural network research to include network concepts not constrained by neuron analogies. These networks are called abductive networks. In describing abductive networks, this paper unveils the true source of the "power" of networks of functional elements. A practical machine learning tool for synthesizing abductive networks from databases of examples, called the Abductory Induction Mechanism (AIMTM), is also presented.
Combined study to assess the role of calcium alginate swabs and ligation of the inferior tonsillar pole in the control of intra-operative blood loss during tonsillectomy (1991)

Bleeding is the major source of morbidity and mortality of tonsillectomy and most operative time is spent securing haemostasis. Calcium alginate reduces experimental wound blood loss. This study assessed the efficacy of alginate swabs during tonsillectomy and inferior tonsillar pole ligation in the control of blood loss during tonsillectomy. Ninety-nine tonsillectomy patients were randomized to gauze or alginate swab use. A haemoglobinometer measured blood losses collected by suction during dissection and by swab until haemostasis was secured. Operative time, complications and healing were also assessed. Mean total blood losses and operative times were similar for the two groups. Swab blood loss was significantly lower for surgeons who ligated the lower tonsillar pole, compared with surgeons who used a snare. This finding was independent of swab type. Independent assessment showed no difference in the healing rate. Alginate swabs offer no advantage over gauze in terms of blood loss, operative time or complications of tonsillectomy. The results show that routine lower pole ligation significantly reduces post-dissection blood loss. We suggest that this technique should be more widely adopted.
Characterization of the Yeast Trimeric-SAS Acetyltransferase Complex (2005)

The yeast SAS2 (Something About Silencing 2) gene encodes a member of the MYST protein family of histone acetyltransferases (HATs) and is involved in transcriptional silencing at all silent loci (HML, HMR, telomeres, and rDNA) in Saccharomyces cerevisiae. Sas2 is the catalytic subunit of a yeast histone acetyltransferase complex termed SAS complex. The enzymatic activity of SAS complex on free histones has been reported, but nucleosomal HAT activity has not yet been documented. Here we show that the native yeast SAS complex is a small trimeric protein complex composed solely of Sas2, Sas4, and Sas5 with a molecular mass of about 125 kDa. It is capable of acetylating both free histones and nucleosomes, although the nucleosomal HAT activity of SAS complex is very weak when compared with that of NuA4, the other member of MYST HAT complex. We also demonstrate that the putative acetyl CoA binding motif in Sas2 is essential for both the in vivo silencing function and the enzymatic activity of SAS complex. Unlike NuA4, which acetylates all four available lysines at the N-terminal tail of histone H4, SAS complex exclusively acetylates lysine 16 of histone H4 in vitro and is required for the bulk of H4 lysine 16 acetylation in vivo. This specific lysine preference corresponds to the role of SAS complex in antagonizing the spreading of Sir proteins at silent loci in S. cerevisiae.
Safe Deployment of Specialized Coiled-Tubing Tools in Live Wells (1992)

Abstract Using coiled tubing (CT) for specialized work, such as logging, selective treatment, drilling, CT completions and CT with gas lift valves installed, requires running long specialized tool strings into live wells. The conventional method of deploying these tools poses several safety hazards and operational problems. A new method for deploying these specialized electrical and fluid tool strings has been developed and addresses the safety and operational concerns of previous methods.
Identification of microRNAs regulated by activin A in human embryonic stem cells (2009)

Human embryonic stem (hES) cells have the capacities to propagate for extended periods and to differentiate into cell types from all three germ layers both in vitro and in vivo. These characteristics of self-renewal and pluripotency enable hES cells having the potential to provide an unlimited supply of different cell types for tissue replacement, drug screening, and functional genomics studies. The hES-T3 cells with normal female karyotype cultured on either mouse embryonic fibroblasts (MEF) in hES medium (containing 4 ng/ml bFGF) (T3MF) or feeder-free Matrigel in MEF-conditioned medium (supplemented with additional 4 ng/ml bFGF) (T3CM) were found to express very similar profiles of mRNAs and microRNAs, indicating that the unlimited self-renewal and pluripotency of hES cells can be maintained by continuing culture on these two conditions. However, the expression profiles, especially microRNAs, of the hES-T3 cells cultured on Matrigel in hES medium supplemented with 4 ng/ml bFGF and 5 ng/ml activin A (T3BA) were found to be different from those of T3MF and T3CM cells. In T3BA cells, four hES cell-specific microRNAs miR-372, miR-302d, miR-367, and miR-200c, as well as three other microRNAs miR-199a, miR-19a, and miR-217, were found to be up-regulated, whereas five miRNAs miR-19b, miR-221, miR-222, let-7b, and let-7c were down-regulated by activin A. Thirteen abundantly differentially expressed mRNAs, including NR4A2, ERBB4, CXCR4, PCDH9, TMEFF2, CD24, and COX6A1 genes, targeted by seven over-expressed miRNAs were identified by inverse expression levels of these seven microRNAs to their target mRNAs in T3BA and T3CM cells. The NR4A2, ERBB4, and CXCR4 target genes were further found to be regulated by EGF and/or TNF. The 50 abundantly differentially expressed genes targeted by five under-expressed miRNAs were also identified. The abundantly expressed mRNAs in T3BA and T3CM cells were also analyzed for the network and signaling pathways, and roles of activin A in cell proliferation and differentiation were found. These findings will help elucidate the complex signaling network which maintains the self-renewal and pluripotency of hES cells.
Metabolic profile and insulin resistance in patients with obstructive sleep apnea syndrome (2011)

The following metabolic parameters were assessed in patients with obstructive sleep apnea syndrome (OSAS) diagnosed by polysomnography (PSG): leptin, IFG (ımpaired fasting glucose), thyroid functions, thyroid autoantibodies, lipid parameters, insulin levels, HOMA-IR index, CRP, obesity, and metabolic syndrome frequency. Materials and methods: Three patient groups were defined based on apnea-hypoapnea index (AHI) levels (Group I: n: 11 male (M)/19 female (F); Group II: n: 19 M/10 F; Group III: n: 21 M/10 F) and 2 control groups (obese (n = 18 M/12 F) and normal (n = 12 M/18 F)) were included with comparable BMI value and age. Results: The frequencies of metabolic syndrome were compared between patient groups, and no significant difference was found, despite an increased frequency of metabolic syndrome from mild OSAS to severe OSAS. The following significant differences were observed for insulin values: normal controls versus obese controls (P < 0.0001), normal controls versus Group I (P = 0.014), normal controls versus Group II (P = 0.001), normal controls versus Group III (P < 0.0001), and Group I versus Group III (P = 0.026). Conclusion: An increased frequency of metabolic syndrome and insulin resistance was found in OSAS patients. OSAS patients with metabolic syndrome and insulin resistance are at an increased risk of diabetes mellitus and cardiovascular diseases.
Low-operating-voltage pentacene field-effect transistor with a high-dielectric-constant polymeric gate dielectric (2006)

Low-operating-voltage organic field-effect transistor has been realized by using the cross-linked cyanoethylated poly(vinyl alcohol) (CR-V) as a gate dielectric. The cross-linked CR-V dielectric was found to have a high dielectric constant of 12.6 and good insulating properties, resulting in a high capacitance (92.9nF∕cm2 at 20Hz) for a dielectric thickness of 120nm. A pentacene field-effect transistor fabricated with the cross-linked CR-V dielectric was found to exhibit a high carrier mobility (0.62cm2∕Vs), a small subthreshold swing (185mV∕decade), and little hysteresis at low operating voltages (⩽−3V).
Glucose-Stimulated Insulin Secretion Is Coupled to the Interaction of Actin with the t-SNARE (Target Membrane Soluble<i>N</i>-Ethylmaleimide-Sensitive Factor Attachment Protein Receptor Protein) Complex (2003)

The actin monomer sequestering agent latrunculin B depolymerized beta-cell cortical actin, which resulted in increased glucose-stimulated insulin secretion in both cultured MIN6 beta-cells and isolated rat islet cells. In perifused islets, latrunculin B treatment increased both first- and second-phase glucose-stimulated insulin secretion without any significant effect on total insulin content. This increase in secretion was independent of calcium regulation because latrunculin B also potentiated calcium-stimulated insulin secretion in permeabilized MIN6 cells. Confocal immunofluorescent microscopy revealed a redistribution of insulin granules to the cell periphery in response to glucose or latrunculin B, which correlated with a reduction in phalloidin staining of cortical actin. Moreover, the t-SNARE [target membrane soluble N-ethylmaleimide-sensitive factor attachment protein (SNAP) receptor] proteins Syntaxin 1 and SNAP-25 coimmunoprecipitated polymerized actin from unstimulated MIN6 cells. Glucose stimulation transiently decreased the amount of actin coimmunoprecipitated with Syntaxin 1 and SNAP-25, and latrunculin B treatment fully ablated the coimmunoprecipitation. In contrast, the actin stabilizing agent jasplakinolide increased the amount of actin coimmunoprecipitated with the t-SNARE complex and prevented its dissociation upon glucose stimulation. These data suggest a mechanism whereby glucose modulates beta-cell cortical actin organization and disrupts the interaction of polymerized actin with the plasma membrane t-SNARE complex at a distal regulatory step in the exocytosis of insulin granules.
Influence of Contamination on Zirconia Ceramic Bonding (2007)

The removal of contaminants prior to the bonding of ceramics is critical for the clinical success of a long-term durable resin bond. This study tested the null hypotheses that there are no contaminants on the zirconia ceramic surface left after try-in simulation, and there are no influences of contamination and cleaning methods on zirconia ceramic bonding durability with 10-methacryloyloxy-decyl dihydrogenphosphate-containing composite resins. After saliva immersion and the use of a silicone disclosing agent, airborne-particle-abraded ceramic specimens were cleaned with acetone, 36% phosphoric acid, additional airborne-particle abrasion, or only water spray. Chemical analyses of specimen surfaces were performed by x-ray photoelectron spectroscopy. The influences of contamination and cleaning methods on ceramic bond durability were examined by tensile testing after 3 or 150 days' water storage with 37,500 thermal cycles. Contamination, existing after try-in simulation as confirmed by chemical analysis, significantly reduced zirconia ceramic-resin bonds. Airborne-particle abrasion may be the most effective cleaning method.
Bipolar and F.E.T. Power Amplifier for a 2.6 GHz Community Television Transponder (1978)

This paper describes the'design of 2.6 GHz, high gain, high power transistor amplifiers for use in a satellite transponder for a community television and radio broadcast service. Two power amplifiers are described: * A Class `c' television channel amplifier using four internally matched bipolar transistors, generating 50 W output power. * A linear amplifier for transmission of 20 FM sound carriers, which uses four paralleled FET's to provide the 10 W of output power with low intermodulation product levels. Both amplifiers are designed to operate in geosynchronous orbit following a Thor/Delta, Ariane, or Shuttle launch.
A Low-Power Integrated Circuit for Interaural Time Delay Estimation Without Delay Lines (2009)

A low-power IC for the estimation of the delay between two infinitely clipped (digital) signals is designed and implemented in a 0.35-mum standard CMOS technology. The proposed circuit is based on a sliding-mode control system and does not need past values of the inputs, which are usually stored using chains of digital registers or analog delay lines and significantly increase the power consumption. The IC is intended to work in ultralow-power miniature sensor network nodes performing localization in the audio range [20, 1000] Hz, as part of a forest environmental protection network. Power dissipation results show a core power consumption of 1.04 muW at 3.3 V and only 282 nW at 1.8 V-in both cases with a clock frequency of 200 kHz. The circuit is fully operative and was successfully tested on field as part of a low-power bearing sensor unit.
Application of Psychophysical Techniques to Haptic Research (2012)

Various psychophysical methods have been used to study human haptic perception, although the selection of a particular method is often based on convention, rather than an analysis of which technique is optimal for the question being addressed. In this review, classical psychophysical techniques used to measure sensory thresholds are described as well as more modern methods such as adaptive procedures and those associated with signal detection theory. Details are provided as to how these techniques should be implemented to measure absolute and difference thresholds and factors that influence subjects' responses are noted. In addition to the methods used to measure sensory thresholds, the techniques available for measuring the perception of suprathreshold stimuli are presented. These scaling methods are reviewed in the context of the various stimulus and response biases that influence how subjects respond to stimuli. The importance of understanding the factors that influence perceptual processing is highlighted throughout the review with reference to experimental studies of haptic perception.
Trigger points and acupuncture points for pain: Correlations and implications (1977)

Trigger points associated with myofascial and visceral pains often lie within the areas of referred pain but many are located at a distance from them. Furthermore, brief, intense stimulation of trigger points frequently produces prolonged relief of pain. These properties of trigger points--their widespread distribution and the pain relief produced by stimulating them--resemble those of acupuncture points for the relief of pain. The purpose of this study was to determine the correlation between trigger points and acupuncture points for pain on the basis of two criteria: spatial distribution and the associated pain pattern. A remarkably high degree (71%) of correspondence was found. This close correlation suggests that trigger points and acupuncture points for pain, though discovered independently and labeled differently, represent the same phenomenon and can be explained in terms of the same underlying neural mechanisms. The mechanisms that play a role in the genesis of trigger points and possible underlying neural processes are discussed.
Crossflow Filtration: Theory and Practice (1988)

Part 1 Crossflow filtration - general background: market objectives and features primary and secondary membranes theoretical background. Part 2 Low-shear crossflow filtration: basic relationships experimental hardware membrane washing industrial application. Part 3 High-shear crossflow filtration: high-shear force as a means of combatting membrane fouling different geometries of high-shear filters the new multi-purpose high-shear filter the rotor experimental dewatering of oil emulsions concentration of suspensions industrial applications of ASEA crossflow filter the flow-sheet of high-shear filter plant enhanced crossflow filtration in electric field.
Enzymatic Synthesis of Deoxyribonucleic Acid (1969)

Abstract The Escherichia coli DNA polymerase, in the absence of DNA, contains a single binding site for which all the deoxyribonucleoside 5'-triphosphates complete. Dissociation constants of the enzyme-triphosphate complexes range from 1 x 10-5 to 2 x 10-4 m. Various analogues of the deoxyribonucleoside 5'-triphosphates also bind to the same site on DNA polymerase. The principal structural requirement for detectable binding at this site appears to be possession of a triphosphate group. Binding of triphosphates is inhibited when the concentration of potassium phosphate is increased, and is inhibited, but to a lesser extent, by increasing potassium chloride concentration. In addition, binding is abolished in the absence of Mg++ and in the presence of 9 mm EDTA. The strength of binding decreases with increasing temperature. Binding measurements were made with equilibrium dialysis microcells, which require only 20 µl of protein solution and in which equilibrium with triphosphates is attained within 90 min at 22°.