gebhart/patrepeval huggingface dataset:
Low-Temperature Removal of H<sub>2</sub>S by Nanoporous Composite of Polymer−Mesoporous Molecular Sieve MCM-41 as Adsorbent for Fuel Cell Applications (2005)

ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTLow-Temperature Removal of H2S by Nanoporous Composite of Polymer−Mesoporous Molecular Sieve MCM-41 as Adsorbent for Fuel Cell ApplicationsXiaochun Xu, Ivan Novochinskii, and Chunshan SongView Author Information Clean Fuels and Catalysis Program, The Energy Institute, and Department of Energy and Geo-Environmental Engineering, Pennsylvania State University, 209 Academic Projects Building, University Park, Pennsylvania 16802 Cite this: Energy Fuels 2005, 19, 5, 2214–2215Publication Date (Web):August 6, 2005Publication History Received12 March 2005Revised7 July 2005Published online6 August 2005Published inissue 1 September 2005https://pubs.acs.org/doi/10.1021/ef050061ohttps://doi.org/10.1021/ef050061orapid-communicationACS PublicationsCopyright © 2005 American Chemical SocietyRequest reuse permissionsArticle Views743Altmetric-Citations34LEARN 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 SUBJECTS:Adsorption,Nanoparticles,Oxides,Polyethylenimine,Sulfur Get e-Alerts
Vanadium-catalyzed epoxidation of cyclic allylic alcohols. Stereoselectivity and stereocontrol mechanism (1979)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTVanadium-catalyzed epoxidation of cyclic allylic alcohols. Stereoselectivity and stereocontrol mechanismTakashi Itoh, Koichiro Jitsukawa, Kiyotomi Kaneda, and Shiichiro TeranishiCite this: J. Am. Chem. Soc. 1979, 101, 1, 159–169Publication Date (Print):January 1, 1979Publication History Published online1 May 2002Published inissue 1 January 1979https://pubs.acs.org/doi/10.1021/ja00495a027https://doi.org/10.1021/ja00495a027research-articleACS PublicationsRequest reuse permissionsArticle Views7094Altmetric-Citations235LEARN 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
Regulation of B Cell Tolerance by the Lupus Susceptibility Gene <i>Ly108</i> (2006)

The susceptibility locus for the autoimmune disease lupus on murine chromosome 1, Sle1z/Sle1bz, and the orthologous human locus are associated with production of autoantibody to chromatin. We report that the presence of Sle1z/Sle1bz impairs B cell anergy, receptor revision, and deletion. Members of the SLAM costimulatory molecule family constitute prime candidates for Sle1bz, among which the Ly108.1 isoform of the Ly108 gene was most highly expressed in immature B cells from lupus-prone B6.Sle1z mice. The normal Ly108.2 allele, but not the lupus-associated Ly108.1 allele, was found to sensitize immature B cells to deletion and RAG reexpression. As a potential regulator of tolerance checkpoints, Ly108 may censor self-reactive B cells, hence safeguarding against autoimmunity.
Parallel computing environments and methods (2002)

Recent advances in high-speed networks, rapid improvements in microprocessor design, and availability of highly performing clustering software implementations enables cost-effective high-performance parallel computing on clustered low cost workstations and PCs. Such clusters are very attractive because they rely on availability of the shelf hardware and software technologies. To simplify programming in network environments and to realise component-based software architectures, many models have emerged as possible standards, namely, RPC: Remote Procedure Call, DCE: Distributed Computing Environment, DCOM: Distributed Component Object Model, CORBA: Common Object Request Broker Architecture, PVM: Parallel Virtual Machine and MPI: Message Passing Interface. The MPI approach is considered one of the most mature methods currently used in parallel programming. MPI implementations an emerging cluster interconnects are an important requirement for useful parallel processing on cost-effective computer clusters. This paper offers art overview of different parallel computing environments and models. Functionality and performance of MPI running on homogeneous and heterogeneous workstation clusters are compared. The project goals, laboratory environment, performance measurements, future work, and a conclusion are presented.
The flavonoid resveratrol suppresses growth of human malignant pleural mesothelioma cells through direct inhibition of specificity protein 1 (2012)

Resveratrol (Res), from the skin of red grapes, induces apoptosis in some malignant cells, but there are no reports on the apoptotic effect of Res on human malignant pleural mesothelioma. We found that Res interacts with specificity protein 1 (Sp1). The IC50 for Res was 17 µM in MSTO-211H cells. Cell viability was decreased and apoptotic cell death was increased by Res (0-60 µM). Res increased the Sub-G1 population in MSTO-211H cells and significantly suppressed Sp1 protein levels, but not Sp1 mRNA levels. Res modulated the expression of Sp1 regulatory proteins including p21, p27, cyclin D1, Mcl-1 and survivin in mesothelioma cells. After treatment with Res, apoptosis signaling cascades were activated by the activation of Bid, Bim, caspase-3 and PARP, upregulation of Bax and downregulation of Bcl-xL. Res (20 mg/kg daily for 4 weeks) effectively suppressed tumor growth in vivo in BALB/c athymic (nu+/nu+) mice injected with MSTO-211H cells, an effect that was mediated by inhibition of Sp1 expression and induction of apoptotic cell death. Our results strongly suggest that Sp1 is a novel molecular target of Res in human malignant pleural mesothelioma.
RP cone-rod degeneration. (1987)

A group of patients with progressive retinal degeneration and visual field loss, who meet the basic definition of RP were investigated to better define the relationship of the findings on the ERG with clinical characteristics such as visual field size, presence or absence of scotomata or pseudo-altitudinal defects on visual field, amount of night blindness; and presence or absence of macular or optic nerve changes. These studies suggest that cone-rod degeneration patients of the RP type go through the following stages; early, the ERG has a definite cone-rod pattern where the rod ERG is larger than the cone ERG while both are abnormal. As the disease advances, there is more of a reduction in the scotopic ERG such that both the rod and cone ERGs become nearly equal. As the disease further progresses the ERG becomes non-recordable on single-flash technique, but there is good residual rod function and the final rod threshold remains good until the visual field is reduced, typically less than 10 degrees with the IV-4 isopter. Finally with advanced disease the patient becomes night blind and generally becomes very difficult to distinguished from patients who have advanced rod-cone degeneration. While it may seem logical to find that visual field size correlates with various ERG parameters; this has not been as consistent a finding in patients with rod-cone degeneration in the author's experience. The analysis shows several new pieces of information about visual field changes in cone-rod degeneration; enlarged blind spots are seen earlier in cases which have recordable cone-rod patterns (group I), and pseudo-altitudinal changes are more likely to occur in autosomal recessive patients. Patients with macular lesions and central scotomata had larger amplitudes than patients with normal appearing maculae and no central scotomata. Patients with temporal optic atrophy had an earlier onset of symptoms and significant correlation with both photopic a- and b-waves and bright flash dark-adapted b-wave implicit times. Macular edema was present in patients with smaller amplitudes and longer implicit times which suggest that these patients have greater panretinal dysfunction which correlates with the macular alterations. Pigment changes within the classes of none, mild, and moderate deposition correlated with ERG parameters; there was more pigment in cases where ERG parameters were worse. However, cases with heavy pigmentation did not correlate with the ERG degree of severity, suggesting that independent factors influence the amount of pigmentation that occurs in these cases.
Mesostructured Polymer–Inorganic Hybrid Materials from Blocked Macromolecular Architectures and Nanoparticles (2006)

This chapter contains sections titled: Introduction AB Diblock Copolymers as Structure-directing Agents for Aluminosilicate Mesostructures Formation Mechanisms Flow-induced Alignment of Mesostructured Block Copolymer–Sol Nanoparticle Co-assemblies Generalization to Other Blocked Macromolecular Amphiphiles as Structure-directing Agents for Mesostructured Materials Generalization to Other Inorganic Materials Systems Mesoporous Aluminosilicate Materials with Superparamagnetic γ-Fe2O3 Particles Embedded in the Walls Ordered Mesoporous Ceramics Stable up to 1500 °C from Diblock Copolymer Mesophases Generalization from Bulk Mesostructured Hybrids to Mesostructured Thin Films Conclusions References
End-User Preferences for and Performance of Competing POU Water Treatment Technologies among the Rural Poor of Kenya (2010)

Household point-of-use (POU) water treatment technologies targeted at vulnerable populations are microbiologically effective and, in small trials, improve health. We do not understand the factors that influence preference for and adoption of these technologies by target end-users. We cycled 400 rural subsistence farm households in western Kenya through three randomly ordered two-month trials of three POU products: dilute hypochlorite solution, porous ceramic filtration, and a combined flocculant-disinfectant powdered mixture to compare relative end-user preferences and usage. Households reported higher usage of both dilute hypochlorite and filters than the flocculant-disinfectant. Averaged among all participating households, Escherichia coli reductions in treated water were generally higher among those that received dilute hypochlorite solution than among those receiving either of the other two products. Among those households that self-reported product usage, the E. coli reductions achieved by dilute hypochlorite and the flocculant-disinfectant are statistically equivalent to one another and higher than the reductions achieved by filters. At the same time, households ranked filters most frequently as their most preferred product.
<title>III-V semiconductor thin films via laser ablation/ionization of I-III-V Zintl-phase materials</title> (1995)

Experimental results, related to a novel laser-assisted technique for deposition of III-V semiconductor thin-films, are presented. The method involves precursors in the form of I-III- V Zintl-phase materials. While such compounds exhibit a variety of useful properties, the presence of the group I element is a major concern--in terms of the desired final product it can be considered a major impurity that has to be removed. To address this situation, we employ a strategy, based on the difference in the ionization potentials for the constituent elements, that can be described in brief as (1) laser ablation of a I-III-V compound, (2) removal of the group I element by selective gas-phase laser ionization and extraction in an electric field, and (3) subsequent re-deposition of the III-V compound. For a particular I-III-V Zintl-phase compound, potassium indium antimonide, K<SUB>4</SUB>In<SUB>4</SUB>Sb<SUB>6</SUB>, time-of-flight mass spectra clearly demonstrate high yield selective gas phase ionization and removal of potassium from the ablation plume. Deposition conditions have been found for scaling of the above removal process macroscopically to thin film growth. The deposits have been studied by Auger electron spectroscopy and the results confirm significant depletion of potassium from thin films deposited via the proposed ablation/ionization removal technique. An assessment is made as to the viability of the process and implications for possible applications of this research as related to film growth are discussed.
Nucleic acid base grafted imino polyurethane (1988)

Abstract Preparation of two model polymers of polynucleotides with linear polyurethane backbone and 2‐(thymin‐1‐yl)propionyl or 2‐(uracil‐1‐yl)propionyl group as grafted pendant are described. 2‐(Thymin‐1‐yl)propionic acid (TPA) and 2‐(uracil‐1‐yl)propionic acid (UPA) were grafted into partial imino functionalized polyurethane, poly[(β,β′‐diethylene)amine methylene bis(4‐phenylcarbamate)]‐75 (PU‐NH‐75), at the secondary amino group through amide bonds with 1‐hydroxybenzotriazole (HOBT) using the active ester technique. Two novel polymer models of polynucleotides, poly[( N ‐(2‐(thymin‐1‐yl)propionyl)‐β,β′‐diethylene)amine methylene bis(4‐phenylcarbamate)]‐75 (PU‐NT‐75) and poly[( N ‐(2‐(uracil‐1‐yl)propionyl)‐β,β′‐diethylene)amine methylene bis(4‐phenylcarbamate)]‐75 (PU‐NU‐75) were obtained. The imino polyurethane PU‐NH‐75 was produced from the partially deprotected N ‐Cbz imino polyurethane, poly[ N ‐(benzyloxycarbonyl‐β,β′‐diethylene)amine methylene bis(4‐phenylcarbamate)] (PU‐NCbz) which was prepared by the polyaddition of 4,4′‐diphenylmethane diisocyanate (MDI) with diol monomer N ‐benzyloxycarbonyl‐β,β′‐dihydroxyethylamine (CbzHEA). Selective N ‐protection of N ‐benzyloxycarbonyloxy‐5‐norbornene‐2,3‐bicarboximide (CbzONB) with β,β′‐dihydroxyethylamine (HEA) gave the N ‐Cbz protected diol monomer HEA. The related monomer model compounds were also prepared by the same methods.
The association between Parkinson's disease and melanoma (2011)

Parkinson's disease (PD) is a neurodegenerative disorder characterized by a loss of melanin-positive, dopaminergic neurons in the substantia nigra. Although there is convincing epidemiologic evidence of a negative association between PD and most cancers, a notable exception to this is that melanoma, a malignant tumor of melanin-producing cells in skin, occurs with higher-than-expected frequency among subjects with PD and that melanoma patients are more likely to have PD. A clear biological explanation for this epidemiological observation is lacking. Here, we present a comprehensive review of published literature exploring the association between PD and melanoma. On the basis of published findings, we conclude that (i) changes in pigmentation including melanin synthesis and/or melanin synthesis enzymes, such as tyrosinase and tyrosine hydroxylase, play important roles in altered vulnerability for both PD and melanoma; (ii) changes of PD-related genes such as Parkin, LRRK2 and α-synuclein may increase the risk of melanoma; (iii) changes in some low-penetrance genes such as cytochrome p450 debrisoquine hydroxylase locus, glutathione S-transferase M1 and vitamin D receptor could increase the risk for both PD and melanoma and (iv) impaired autophagy in both PD and melanoma could also explain the association between PD and melanoma. Future studies are required to address whether altered pigmentation, PD- or melanoma-related gene changes and/or changes in autophagy function induce oncogenesis or apoptosis. From a clinical point of view, early diagnosis of melanoma in PD patients is critical and can be enhanced by periodic dermatological surveillance, including skin biopsies.
83. Alkyl–oxygen fission in carboxylic esters. Part VII. Hydrolysis of methyl-β-naphthylcarbinyl hydrogen phthalate (1951)

M. P. Balfe, J. Kenyon and C. E. Searle, J. Chem. Soc., 1951, 380 DOI: 10.1039/JR9510000380
A versatile and inexpensive electronic system for a high resolution NMR spectrometer (1973)

The complete electronic system of a frequency-sweep 240 MHz NMR spectrometer working with a superconducting magnet is described. Full circuit and construction details are given for the rf sideband generator, pretuned coaxial cavity, af aperiodic synchronous detector, digital frequency synthesizer as well as a phase-coherent, variable-frequency, time-sharing pulse generator. This system, with multichannel irradiation possibilities uses extensively standard integrated logic circuits and can be inexpensively built by any laboratory engaged in NMR research.
A Hybrid System That Support s Pull-type And Push-type AV Content Streaming Based on DLNA Technologies (2008)

We present a new system model based on DLNA 2- box models. The proposed system supports pull-type and push- type streaming of AV content on the same device platform, which is not directly supported by DLNA currently. This system also provides a streaming-conflict avoiding mechanism and a dynamic pull-push switching mechanism.
Phage Display Affords Peptides that Modulate β-Amyloid Aggregation (2006)

As the population ages, the need to develop methods to understand and intercept the processes responsible for protein aggregation diseases is becoming more urgent. The aggregation of the protein beta-amyloid (Abeta) has been implicated in Alzheimer's Disease (AD); however, whether the toxic species is a large, insoluble aggregate or some lower order form is not yet known. Agents that can modulate the aggregation state of Abeta could resolve this controversy by facilitating our understanding of the consequences of aggregation and its underlying mechanism. To date, however, ligands that bind to specific forms of Abeta have not been identified. To address this deficiency, we tested whether phage display could yield such ligands by screening libraries against Abeta in two different states: monomeric or highly aggregated. Intriguingly, the peptides selected had different effects on Abeta aggregation. Peptides selected for binding to monomeric Abeta did not perturb aggregation, but those selected using highly aggregated Abeta increase the rate of aggregation drastically. The latter also alter the morphology of the resulting aggregate. The ability of a peptide to promote aggregation correlated with its affinity for the N-terminal 10 residues of Abeta. This result indicates that the mechanism by which the peptides influence aggregation is related to their affinity for the Abeta N-terminus. Thus, the identification of compounds that bind to this Abeta section can afford agents that affect aggregation. Moreover, the data suggest that endogenous ligands that interact with the N-terminal region can influence the propensity of Abeta to form aggregates and the morphology of those that form. Our data highlight the utility of phage display for identifying ligands that bind to target proteins in different states, and they indicate that such agents can be used to perturb protein aggregation.
Actividad antioxidante y compuestos fenólicos en infusiones herbarias consumidas en Brasil (2008)

Se estudio el contenido de compuestos fenolicos, principales flavonoides y la actividad antioxidante de tes procesados e infusiones herbarias. Los compuestos fenolicos totales fueron determinados por el metodo de Folin-Ciocalteu y variaron desde N.D. hasta 46,46 ± 0,44 mg/g GAE. Los flavonoides fueron investigados por HPLC y la miricetina, quercetina y kaempferol fueron identificados en te negro, verde y en infusion de manzanilla. La actividad antioxidante fue evaluada usando dos metodologias, DPPH y el metodo de decoloracion del m-caroteno (DBC). Utilizando el DBC, las actividades mas elevadas fueron encontradas en las infusiones del te negro, del mate, de la hierba limon, de la manzanilla y del hinojo, mientras que las infusiones herbarias frescas presentaron las actividades mas bajas. Utilizando el metodo de DPPH las infusiones herbarias frescas presentaron las actividades mas altas. Las hojas procesadas con los valores mas bajos IC50 fueron el te verde y negro (147,63 y 288,60 mg/mL, respectivamente). Los resultados de esta investigacion demuestran que las infusiones analizadas son una buena fuente de compuestos que presentan actividad antioxidante in vitro.
Diffusion in single supported lipid bilayers studied by quasi-elastic neutron scattering (2010)

It seems to be increasingly accepted that the diversity and composition of lipids play an important role in the function of biological membranes. A prime example of this is the case of lipid rafts; regions enriched with certain types of lipids which are speculated to be relevant to the proper functioning of membrane embedded proteins. Although the dynamics of membrane systems have been studied for decades, the microscopic dynamics of lipid molecules, even in simple model systems, is still an active topic of debate. Neutron scattering has proven to be an important tool for accessing the relevant nanometre length scale and nano to picosecond time scales, thus providing complimentary information to macroscopic techniques. Despite their potential relevance for the development of functionalized surfaces and biosensors, the study of single supported membranes using neutron scattering poses the challenge of obtaining relevant dynamic information from a sample with minimal material. Using state of the art neutron instrumentation we were, for the first time, able to model lipid diffusion in single supported lipid bilayers. We find that the diffusion coefficient for the single bilayer system is comparable to the multi-lamellar lipid system. More importantly, the molecular mechanism for lipid motion in the single bilayer was found to be a continuous diffusion, rather than the flow-like ballistic motion reported in the stacked membrane system. We observed an enhanced diffusion at the nearest neighbour distance of the lipid molecules. The enhancement and change of character of the diffusion can most likely be attributed to the effect the supporting substrate has on the lipid organization.
Social Serendipity: Mobilizing Social Software (2005)

Many mobile devices incorporate low-power wireless connectivity protocols, such as Bluetooth, that can be used to identify an individual to other people nearby. We have developed an architecture that leverages this functionality in mobile phones - originally designed for communication at a distance - to connect people across the room. Serendipity is an application of the architecture. It combines the existing communications infrastructure with online introduction systems' functionality to facilitate interactions between physically proximate people through a centralized server. A new mobile-phone-based system uses Bluetooth hardware addresses and a database of user profiles to cue informal, face-to-face interactions between nearby users who don't know each other, but probably should.