gebhart/patrepeval huggingface dataset:
Infrared Spectroscopy of Bis[(perfluoroalkyl)sulfonyl] Imide Ionomer Membrane Materials (2009)

Structural properties of the proton-exchanged forms of bis[(perfluoroalkyl)sulfonyl] imide (PFSI) ionomer materials were investigated. The hydration and dehydration of samples prepared as thin films and freestanding membrane were probed by applying transmission infrared spectroscopy. Spectral bands were assigned and effects of water incorporation into membrane pores and channels were understood by drawing upon results from related measurements performed on the structurally similar, perfluorosulfonic acid ionomer, Nafion. Both PFSI and Nafion membrane materials display a prominent infrared absorbance band near 1060 cm(-1) that arises from a vibrational mode of the ionizable group present on the side chains that extend from the poly(tetrafluoroethylene) backbone on the polymers. The mode can be traced to symmetric stretching of the -SO(3)(-) (sulfonate) group in Nafion and to antisymmetric S-N-S stretching within the sulfonyl imide end group (-SO(2)(N(-))SO(2)CF(3)) in the PFSI materials. For Nafion samples, the position and width of the band near 1060 cm(-1) are strongly sensitive to membrane hydration, whereas the band position and shape change only slightly during hydration and dehydration of PFSI materials. The possibility for greater charge delocalization over the sulfonyl imide moiety and shielding of hydrophilic species by the terminal -CF(3) group are suggested to explain the differences. These effects also likely influence the stretching modes of the side chain C-O-C groups. A pair of bands, sensitive to hydration and traceable to different C-O-C groups in a side chain, is present in the 970-990 cm(-1) region of Nafion. However, the two features are not well resolved and are less sensitive to hydration in spectra of PFSI samples. The most intense ionomer spectral bands arise from modes involving C-F stretching motion and appear between 1150 and 1250 cm(-1). Toward the high energy side of the envelope, there is substantial overlap with features of sulfonate group antisymmetric SO stretching modes in Nafion, but SO stretching modes of the sulfonyl imide moiety are higher in energy and better resolved in spectra of the PFSIs. During water uptake from a dry state into PFSI materials, a progression of features characteristic of solvated H(3)O(+) species appears across the water O-H stretching (2800-3800 cm(-1)) and H-O-H bending (1500-2000 cm(-1)) regions, similar to responses observed for water inside proton-exchanged Nafion.
Separation Membranes (2011)

This chapter contains sections titled: Membranes and Membrane-Based Processes Preparation and Manufacture of Porous Polymeric Membranes Applications of Porous Polymer Membranes Conclusions and Outlook Acknowledgments Abbreviations References
Synthesis of Well-Defined ω-Oxanorbornenyl Poly(ethylene oxide) Macromonomers via Click Chemistry and Their Ring-Opening Metathesis Polymerization (2010)

ω-Oxanorbornenyl poly(ethylene oxide) monomethyl ether macromonomers were synthesized with molecular weights ranging from 500 g/mol to 5000 g/mol through the Huisgen 1,3-dipolar cycloaddition between acetylene-functionalized oxanorbornene and ω−azido poly(ethylene oxide) monomethyl ether. Thermal analysis showed that the ω-exo-norbornenyl end-group of the macromonomers is converted into a maleimide group through a retro-Diels−Alder process at 130 °C. Ring-opening metathesis polymerization (ROMP) of these macromonomers was investigated using Grubbs’ catalyst in dichloromethane at room temperature. Poly(oxanorbornene)-g-poly(ethylene oxide)s were obtained with polydispersities between 1.04 and 1.17 and molecular weights between 9900 and 57 800 g/mol leading to comb or brush copolymers according to the lengths of backbone and graft chains.
Additional Text-Drivernet: uncovering the impact of somatic driver mutations on transcriptional networks in cancer (1970)

Department of Molecular Oncology, British Columbia Cancer Agency, 675 West 10th Avenue, Vancouver, BC V5Z 1L3, Canada Faculty of Information Technology, Monash University, Wellington Road, Clayton, VIC 3800, Australia Department of Computer Science, University of British Columbia, 2366 Main Mall, Vancouver, BC V6T 1Z4, Canada Bioinformatics Training Program, University of British Columbia, 570 West 7th Avenue, Vancouver, BC V5Z 4S6, Canada Department of Pathology and Laboratory Medicine, University of British Columbia, 2211 Wesbrook Mall, Vancouver, BC V6T 2B5, Canada Centre for Translational and Applied Genomics, BC Cancer Agency, 600 West 10th Avenue, Vancouver, BC V5Z 4E6 Canada Cancer Research UK, Cambridge Research Institute, Li Ka Shing Centre, Robinson Way, Cambridge, CB2 0RE, UK * Equal contribution
Pruning of Buttress Roots and Stability Changes of Red Maple (Acer rubrum) (2014)

The purpose of this study was to evaluate the effects of buttress root pruning on tree stability and to compare different methods of correlating various root parameters to force levels. Ten plantation-grown Acer rubrum (red maple) trees were pulled to an angle of one degree from vertical with measured force, then roots were individually severed near the trunk and the pull tests were repeated until roots had been pruned from 50% of the circumference. Test trees had 6 to 10 buttress roots. There was a nearly direct linear relation between the number of roots removed and the force applied. When comparing four assessment methods to determine pull force change associated with root pruning, the method that had the greatest amount of variability explained by the regression was the comparison of the cross-sectional area of roots cut to the force. However, relating the percentage of buttress roots cut to the force provided only slightly less accurate information, and was more easily collected prior to tree removal.
A novel heteroepitaxy method of Ge films on CaF2 by electron beam exposure (1988)

A novel heteroepitaxy method of Ge films on CaF2/Si(111) structures is presented, in which two successive processes of electron beam (e-beam) exposure and predeposition of thin Ge layers at room temperature are done prior to the growth of thick Ge films at elevated temperatures. It was found in the e-beam exposed region that the island growth of the predeposited Ge layer was prevented and the surface morphology and crystalline quality of the Ge overlayer grown at 600 °C were dramatically improved. These results were virtually independent of the sequence of the predeposition and exposure processes. From discussion on the growth mechanism of this method, a most plausible model that e-beam dissociates the surface composition of CaF2 and improves the wettability between Ge and CaF2 is proposed.
Nucleation of the Proeutectoid Ferrite and its Role in the Formation of the Transformation Texture in a Low Carbon Steel (1987)

Article Nucleation of the Proeutectoid Ferrite and its Role in the Formation of the Transformation Texture in a Low Carbon Steel was published on February 1, 1987 in the journal International Journal of Materials Research (volume 78, issue 2).
Temperature compensated solidly mounted resonators with thin SiO<inf>2</inf> layers (2009)

Temperature compensation is becoming more and more a high demand for RF filters in order to successfully meet the tightening specifications over a wide range of temperatures. We show our results on temperature compensation by adding thin SiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> layers at high stress regions inside the resonator. We examine the effect of adding the SiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> layer on the resonators properties and we extract an accurate value to the temperature coefficient of stiffness of thin film SiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> .
Positive and negative selection for tumor necrosis factor responsiveness reveals an inhibitory role for EGF receptor in TNF-induced antiproliferation. (1994)

Tumor necrosis factor (TNF) induces dose-dependent, but incomplete cytotoxicity in ME-180 cervical carcinoma cells resulting in a significant reduction in cell viability. In this cell line there exists a characteristic residual tumor cell population that appears to be resistant to TNF. In order to investigate tumor cell heterogeneity and characteristics that correlate with their escape from TNF-induced cytotoxicity, TNF-resistant ME-180 cell variants (ME-180R) were isolated from a population of ME-180 cervical carcinoma cells (ME-180 parental). Incubation of ME-180 parental cells with TNF resulted in measurable changes in tumor cell DNA structural integrity and dose-dependent cytotoxicity, whereas ME-180R cell growth and DNA integrity were not effected by incubation with TNF. Binding of 125I-labeled TNF to a TNF-specific cell-surface receptor was measurable and equivalent on both ME-180R and ME-180 parental cells and both cell lines predominantly expressed the p55 form of the TNF receptor based upon flow cytometric analysis. Although both cell lines shared similar doubling times, intrinsic EGF receptor tyrosine kinase activity in ME-180R cells was found to be > 3-fold higher than that isolated from ME-180 parental cells. These results suggest that TNF-responsiveness may be mediated at a point subsequent to TNF binding and may be regulated, in part, by the expression of tyrosine kinase activity. To further explore this hypothesis, A431 vulvular carcinoma cells that express resistance to TNF were cloned and variants were isolated that escaped EGF-induced growth inhibition.(ABSTRACT TRUNCATED AT 250 WORDS)
Lead Salts of 2,4,6-Trinitroresorcinol (1954)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLead Salts of 2,4,6-TrinitroresorcinolRalph A. ZingaroCite this: J. Am. Chem. Soc. 1954, 76, 3, 816–819Publication Date (Print):February 1, 1954Publication History Published online1 May 2002Published inissue 1 February 1954https://pubs.acs.org/doi/10.1021/ja01632a054https://doi.org/10.1021/ja01632a054research-articleACS PublicationsRequest reuse permissionsArticle Views129Altmetric-Citations8LEARN 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
Analysis of Energy Consumption and CO2 Emissions of the Life Cycle of Biohydrogen Applied to the Portuguese Road Transportation Sector (2010)

In this work the main objective is to analyze energy consumption and CO 2 emissions of biohydrogen for use in the transportation sector in Portugal.A life cycle assessment will be performed in order to evaluate bio-hydrogen pathways, having biodiesel and conventional fossil diesel as reference.The pathways were production of feedstock, pre-treatment, treatment, compression, distribution and applications.For the well-to-tank analysis the SimaPro 7.1 software and excel tools are used.This study includes not only a well-to-tank analysis but also a tank-to-wheel analysis (using ADVISOR software) estimating hydrogen consumption and electricity consumption of a fuel cell hybrid and a plug-in hybrid.Several bio-hydrogen feedstocks to produce hydrogen through fermentation processes will be considered: potato peels.
In thyroid cancer cell lines expression of periostin gene is controlled by p73 and is not related to epigenetic marks of active transcription (2011)

Levels of epigenetic marks of active transcription do not contribute to regulation of periostin gene expression. The ΔNp73 effects suggest a novel molecular mechanism involved in thyroid cancer progression.
Influence of Lactobacillus bulgaricus on Commercial Swiss Cheese (1977)

Swiss cheese was manufactured on a commercial scale with different amounts of Lactobacillus bulgaricus. As the amount of L. bulgaricus was increased from 0 to 2500 ml of a 16 h culture/ 9,080 kg of milk the cheese showed decreased numbers of propionibacteria, increased free proline and proteolysis, and more intense flavors. Diacetyl, propionic acid, and acetic acid were not changed significantly by the amount of L. bulgaricus added.
The Course of Esophageal Varices in Patients with Hepatitis C Cirrhosis Responding to Interferon/ Ribavirin Therapy (2011)

A successful IFN therapy prevents or delays the de novo onset of EV in patients with compensated cirrhosis due to HCV, but does not abrogate the need for continued endoscopic surveillance.
Analysis of Magnetic Field and Evaluation of Mechanical Time Constants on a Linear DC Motor. (1993)

A linear dc motor (LDM) is useful in a high-speed and high-accuracy positioning system with a feedback controller.1) A moving-coil-type LDM can be used for a pen recorder. We analyzed the magnetic field of an LDM, using a 3D finite element method, and designed an improved LDM with the specific intention of increasing the flux density in the gap. The mechanical time constant is the most basic parameter in a positioning control system. We calculated the mechanical time constants of the LDM at various frequencies, and clarified the effect on the mechanical time constants of increasing the flux den sity in the gap of the improved LDM.
The effects of a whole grain-enriched hypocaloric diet on cardiovascular disease risk factors in men and women with (2008)

Background: Whole-grain foods are associated in observational studies with a lower body mass index and lower cardiovascular disease(CVD)risk.However,fewclinicaltrialshavetestedwhether incorporating whole grains into a hypocaloric diet increases weight loss and improves CVD risk factors. Objective:Theaimofthisstudywastodeterminewhetherincluding whole-grain foods in a hypocaloric (reduced by 500 kcal/d) diet enhances weight loss and improves CVD risk factors. Design: Obese adults (25 M, 25 F) with metabolic syndrome were randomly assigned to receive dietary advice either to avoid wholegrain foods or to obtain all of their grain servings from whole grains for 12 wk. All participants were given the same dietary advice in other respects for weight loss. Results:Bodyweight,waistcircumference,andpercentagebodyfat decreased significantly (P 0.001) in both groups over the study period, but there was a significantly (P 0.03) greater decrease in percentage body fat in the abdominal region in the whole-grain group than in the refined-grain group. C-reactive protein (CRP) decreased 38% in the whole-grain group independent of weight loss butwasunchangedintherefined-graingroup(P0.01forgroup time interaction). Total, LDL, and HDL cholesterol decreased in both diet groups (P 0.05). Dietary fiber and magnesium intakes increased in the whole-grain but not the refined-grain group (P 0.007 and P 0.001, respectively, for group time interaction). Conclusions: Both hypocaloric diets were effective means of improving CVD risk factors with moderate weight loss. There were significantly (P 0.05) greater decreases in CRP and percentage body fat in the abdominal region in participants consuming whole grains than in those consuming refined grains. Am J Clin Nutr 2008;87:79–90.
High-contrast, all-silicon waveguiding platform for ultra-broadband mid-infrared photonics (2013)

Suspended silicon-membrane ridge waveguides are fabricated and characterized on a single-material photonic device platform. By using direct bonding, a thin layer of silicon is fused to a bulk silicon substrate, which is patterned with narrow trenches. Waveguides are etched on the resulting suspended membranes and are characterized at mid- and near-infrared wavelengths. Transverse magnetic-mode propagation losses of 2.8 ± 0.5 and 5.6 ± 0.3 dB/cm at 3.39 and 1.53 μm wavelengths are measured, respectively. This all-silicon optical platform is capable of continuous low-loss waveguiding from wavelengths of 1.2–8.5 μm, enabling numerous applications in frequency conversion and spectral analysis.
Figure S2 from UNC-45A Is a Novel Microtubule-Associated Protein and Regulator of Paclitaxel Sensitivity in Ovarian Cancer Cells (2023)

<p>Polyclonal and clones of paclitaxel-resistant ovarian cancer cells overcome cell death on multipolar spindles</p>
Oxygen uptake rates in cultured rat hepatocytes (1992)

One potential treatment of acute liver failure involves the use of an extracorporeal device composed of functional hepatocytes. A major issue in the design of such a large-scale device is providing the hepatocytes with a sufficient supply of oxygen and other nutrients. In this study, we have designed and characterized a simple perfusion system hepatocytes using this system. The OUR of hepatocytes was determined during the first day after seeding on a single collagen gel and during the long-term stable culture after the addition of a top layer of collagen. The OUR increased to 20.7 +/- 0.57 pmol/sec/microg DNA during the first 13 hours of culture on a single collagen gel, while during the next 11 hours, the OUR declined to 10.6 +/- 1.5 pmol/sec/microg DNA. In parallel with the increase in OUR during the first 10 hours, we observed significant cell spreading, suggesting that the oxygen supply to the cells may be critical for the spreading and adaptation of the anchorage-dependent hepatocytes following isolation. Addition of a top layer of collagen to hepatocyte cultures for 24 hours of culture on a single collagen layer resulted in a stable OUR for 15 days. These results indicate that OUR of hepatocytes in culture may vary depending on the phase of culture (i.e., early vs. late) and on the extracellular environment.
Purification of the Arabidopsis 26 S Proteasome (2004)

alleles 1 and 2), AY242527 (RPN2b), AY230831 (RPN3a), AY230832 (RPN5a), AY230833 (RPN5b), AY230834 -37 (RPN6, alleles 1-4), AY230838 (RPN7), AY230839 -40 (RPN8a, alleles 1 and 2), AY258412 (RPN8b), AY230841 (RPN9a)
Synthesis, reactivity, and tellurium-125 NMR studies of (C5H5)RhFe2Te2(CO)x (x = 6, 7) (1983)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis, reactivity, and tellurium-125 NMR studies of (C5H5)RhFe2Te2(CO)x (x = 6, 7)David A. Lesch and Thomas B. RauchfussCite this: Inorg. Chem. 1983, 22, 13, 1854–1857Publication Date (Print):June 1, 1983Publication History Published online1 May 2002Published inissue 1 June 1983https://pubs.acs.org/doi/10.1021/ic00155a006https://doi.org/10.1021/ic00155a006research-articleACS PublicationsRequest reuse permissionsArticle Views129Altmetric-Citations49LEARN 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
0.10-μm overlay for DRAM production using step and scan (1990)

The resolution capabilities of lithographic tools are being progressively pushed to allow the replication of increasingly smaller lithographic features1'2 The target for 0.5-micron resolution is almost past; 0.4-micron resolution is of keen interest; and the goal of 0.35 micron is just around the corner. The overlay requirements using the familiar rule of thumb of Overlay = Resolution I 4 indicates that a 0.10-micron (mean plus 3 sigma) specification is required for 0.40-micron resolution tools. This is not an easy task. We will explore it in the context of a Step-and-Scan' alignment system.
Oxygen Sensing (2003)

GENOMICS OF OXYGEN SENSING, Gregg L. SemenzaBiochemistry and Physiological Importance of Heme Proteins as Oxygen Sensors, Marie-Alda Gilles-GonzalezA Role for the Mitochondrion and Reactive Oxygen Species in Oxygen Sensing and Adaptation to Hypoxia in Yeast, Robert O. Poyton, Reinhard P. Dirmeier, Kristin M. O'Brien, and Erick SpearsRegulation of HIF-1 by Oxygen: The Role of Prolyl Hydroxylase and the VHL Tumor Suppressor, Patrick H. Maxwell and Peter J. RatcliffeOxygen- or Redox-Dependent Regulation: The Role of Hydrogen Peroxide in the Regulation of Erythropoietin Gene Expression, Joachim FandreyStructure and Regulation of the Mouse Hypoxia-Inducible Factor-1a Gene, Roland H. WengerHypoxia-Inducible Factor 1: More Than a Hypoxia-Inducible Transcription Factor, Thomas Hellwig?Bnrgel, Daniel Phillip Stiehl, and Wolfgang JelkmannBrain Microvascular and Metabolic Adaptation to Prolonged Mild Hypoxia, Faton H. Agani, Juan Carlos Ch?vez, Paola Pichiule, and Joseph C. LaMannaMolecular Adaptation to Hypoxia, Karen A. Seta, Yong Yuan, Zachary Spicer, Gang Lu, and David E. MillhornRegulation of Tyrosine Hydroxylase Gene Expression by Hypoxia in Neuroendocrine Cells, Maria F. Czyzyk Krzeska, Phillip O. Schnell, Amy L. Bauer, Justin B. Striet, James A. Nash, Anna V. Kuznetsova, and Anna S. HuiGenome-wide Computational Screen for Candidate HIF Target Genes in Drosophila melanogaster and Caenorhabditis elegans, Thomas A. Gorr, Pavel Hradecky, Joshua D. Cahn, and H. Franklin BunnOXYGEN SENSING IN THE CAROTID BODY, AND OTHER CELLS, ORGANS, AND ORGANELLES, Sukhamay Lahiri and Nanduri R. PrabhakarFetal Adaptations to Hypoxia, James P. Newman, Mark A. Hanson, and Lucy R. GreenPerinatal Transition of Oxygen Sensing in the Peripheral Chemoreceptors, Jean-Christophe Roux, Julie Peyronnet, and Hugo LagercrantzPostnatal Maturation of the Carotid Chemoreceptor O2 Sensitivity at the Cellular Level, John L. CarrollMaturation of Chemoreceptor O2 and CO2 Sensitivity, Prem KumarFurther Evidence That Oxygen Sensing in the Carotid Body Involves Iron and Heme Proteins, Sukhamay Lahiri, Arijit Roy, Anil Mokashi, Peter A. Daudu, Jinquing Li, Santhosh M. Baby, and Donald G. BuerkO2-Sensitive K+ Channels Controlling Cell Excitability, Chris Peers, Anthony Lewis, Leigh D. Plant, Hugh A. Pearson, and Paul J. KempCarotid Body Thin Slices: New Answers for Old Questions, Jos? L pez-Barneo and Ricardo PardalElectric and Dye Coupling Between Rat Carotid Body Cells and Between These Cells and Carotid Nerve Endings, Carlos Eyzaguirre, Rugang Jiang, and Ver nica AbudaraFrom Oxygen Sensing to Chemosensory Activity: The Mediator Role of Glomus Cells, Patricio ZapataExcitation of Glomus Cells: Interaction Between Voltage-Gated K+ Channels and Cholinergic Receptors, Machiko Shirahata, Tomoko Higashi, Serabi Hirasawa, Shigeki Yamaguchi, Robert S. Fitzgerald, and Boris LandeSome Neurotransmitter Relationships in the Carotid Body'