gebhart/patrepeval huggingface dataset:
Anionic ring-opening oligomerization and polymerization of silicon-bridged [1]ferrocenophanes: Characterization of short-chain models for poly(ferrocenylsilane) high polymers (1994)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAnionic ring-opening oligomerization and polymerization of silicon-bridged [1]ferrocenophanes: Characterization of short-chain models for poly(ferrocenylsilane) high polymersRon Rulkens, Alan J. Lough, and Ian MannersCite this: J. Am. Chem. Soc. 1994, 116, 2, 797–798Publication Date (Print):January 1, 1994Publication History Published online1 May 2002Published inissue 1 January 1994https://pubs.acs.org/doi/10.1021/ja00081a062https://doi.org/10.1021/ja00081a062research-articleACS PublicationsRequest reuse permissionsArticle Views618Altmetric-Citations163LEARN 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-AlertscloseSupporting Info (2)»Supporting Information Supporting Information Get e-Alerts
Molecular Weight Dependence of Antibacterial Activity in Cationic Disinfectants (1990)

New oligomers of in-chain quaternary ammonium salts as well as polymers were examined for antibacterial activity with special attention to the effect of their molecular weights. Two sets of homologs with different spacer structures were prepared: one with a rigid p-xylylene spacer and the other with a flexible hexamethylene spacer. It was found that the activity depends strongly on the molecular weight and that both bacteriostatic and bacteri cidal activity increase in the order of monomer — dimer < trimer < tetramer < polymer.
Characterization of ubiquitin and ubiquitin‐like‐protein isopeptidase activities (2008)

Conjugation or deconjugation of ubiquitin (Ub) or ubiquitin-like proteins (UBLs) to or from cellular proteins is a multifaceted and universal means of regulating cellular physiology, controlling the lifetime, localization, and activity of many critical proteins. Deconjugation of Ub or UBL from proteins is performed by a class of proteases called isopeptidases. Herein is described a readily quantifiable novel isopeptidase assay platform consisting of Ub or UBL fused to the reporter enzyme phospholipase A(2) (PLA(2)). Isopeptidase activity releases PLA(2), which cleaves its substrate, generating a signal that is linear with deubiquitylase (DUB) concentration and is able to discriminate DUB, deSUMOylase, deNEDDylase, and deISGylase activities. The power and sensitivity of the UBL-PLA(2) assay are demonstrated by its ability to differentiate the contrasting deISGylase and DUB activities of two coronavirus proteases: severe acute respiratory syndrome papain-like protease (SARS-CoV PLpro) and NL63 CoV papain-like protease 2 (PLP2). Furthermore, direct comparisons with the current Ub-7-amino-4-methylcoumarin (Ub-AMC) assay demonstrated that the Ub-PLA(2) assay is an effective tool for characterizing modulators of isopeptidase activity. This observation was expanded by profiling the inhibitory activity of the nonselective isopeptidase inhibitor NSC 632839 against DUBs and deSUMOylases. Taken together, these studies illustrate the utility of the reporter-based approach to measuring isopeptidase activity.
Mobility assessment in older people: new possibilities and challenges (2007)

A major challenge for researchers and clinicians who address health issues in the ageing population is to monitor functioning, and to timely initiate interventions that aim to prevent loss of functional abilities and to improve the quality of life of older people. With the progress of technologies in the last decades, methods have become available that use body fixed sensors (BFS) to measure aspects of human performance under real-life conditions. These methods are based on the use of miniaturised and integrated sensors in combination with lightweight, small measuring devices that both can be carried on the body without interfering with normal behaviour. This paper addresses the potential relevance of new technology for monitoring motor function in older people, thereby specifically focusing on mobility assessment. After a short introduction with background information about BFS based technology, this paper identifies areas of particular relevance, and discusses the application of ambulatory techniques for long-term monitoring of daily physical activity, fall detectors, fall risk evaluation, and assessment of motor performance such as gait and balance control. Examples are given how these techniques can become clinically relevant, particularly in the context of fall interventions for older people.
Malignant fibrous histiocytoma of the bone treated by resection and prosthesis--a case report. (1988)

A case of primary malignant fibrous histiocytoma of the right femur was encountered in a 31-year-old male who presented initially with a comminuted subtrochanteric fracture of the right femur. It was treated by local wide“en bloc” resection of the proximal femur, total hip replacement with tumor prosthesis and adjuvant chemotherapy. Soft tissue local recurrence was found 11 months later, and was treated by local wide excision. The patient has been then tegularly followed up for the following four years. Therer has been no evidence of local recurrence or distant metastasis. The patient has had a symptom-free life in the past four years. The limb function has been good, and the patient could walk around without support. The range of motion of the right hip in extension, flexion and abduction was about 30°,75° and 30°respectively. The discrepancy of limb length was 1.2 cm.
Cost-effectiveness of 3 Methods to Enhance the Sensitivity of Papanicolaou Testing (1999)

Technologies to increase the sensitivity of Pap testing are more cost-effective when incorporated into infrequent screening. Increases in sensitivity and decreases in cost may eventually make each technology more cost-effective.
<i>N</i>-Benzyl-<i>N</i>-ethyl-4-methylbenzenesulfonamide (2010)

In the title compound, C(16)H(19)NO(2)S, the dihedral angle between the two aromatic rings is 84.78 (7)°. Weak inter-molecular C-H⋯O inter-actions stabilize the crystal structure by the formation of a 16-membered R(2) (2)(16) ring motif.
Guided Wave Based Crack Detection in the Rivet Hole Using Global Analytical with Local FEM Approach (2016)

In this article, ultrasonic guided wave propagation and interaction with the rivet hole cracks has been formulated using closed-form analytical solution while the local damage interaction, scattering, and mode conversion have been obtained from finite element analysis. The rivet hole cracks (damage) in the plate structure gives rise to the non-axisymmetric scattering of Lamb wave, as well as shear horizontal (SH) wave, although the incident Lamb wave source (primary source) is axisymmetric. The damage in the plate acts as a non-axisymmetric secondary source of Lamb wave and SH wave. The scattering of Lamb and SH waves are captured using wave damage interaction coefficient (WDIC). The scatter cubes of complex-valued WDIC are formed that can describe the 3D interaction (frequency, incident direction, and azimuth direction) of Lamb waves with the damage. The scatter cubes are fed into the exact analytical framework to produce the time domain signal. This analysis enables us to obtain the optimum design parameters for better detection of the cracks in a multiple-rivet-hole problem. The optimum parameters provide the guideline of the design of the sensor installation to obtain the most noticeable signals that represent the presence of cracks in the rivet hole.
Cholangiocyte primary cilia are chemosensory organelles that detect biliary nucleotides via P2Y<sub>12</sub> purinergic receptors (2008)

Cholangiocytes, the epithelial cells lining intrahepatic bile ducts, contain primary cilia, which are mechano- and osmosensory organelles detecting changes in bile flow and osmolality and transducing them into intracellular signals. Here, we asked whether cholangiocyte cilia are chemosensory organelles by testing the expression of P2Y purinergic receptors and components of the cAMP signaling cascade in cilia and their involvement in nucleotide-induced cAMP signaling in the cells. We found that P2Y(12) purinergic receptor, adenylyl cyclases (i.e., AC4, AC6, and AC8), and protein kinase A (i.e., PKA RI-beta and PKA RII-alpha regulatory subunits), exchange protein directly activated by cAMP (EPAC) isoform 2, and A-kinase anchoring proteins (i.e., AKAP150) are expressed in cholangiocyte cilia. ADP, an endogenous agonist of P2Y(12) receptors, perfused through the lumen of isolated rat intrahepatic bile ducts or applied to the ciliated apical surface of normal rat cholangiocytes (NRCs) in culture induced a 1.9- and 1.5-fold decrease of forskolin-induced cAMP levels, respectively. In NRCs, the forskolin-induced cAMP increase was also lowered by 1.3-fold in response to ATP-gammaS, a nonhydrolyzed analog of ATP but was not affected by UTP. The ADP-induced changes in cAMP levels in cholangiocytes were abolished by chloral hydrate (a reagent that removes cilia) and by P2Y(12) siRNAs, suggesting that cilia and ciliary P2Y(12) are involved in nucleotide-induced cAMP signaling. In conclusion, cholangiocyte cilia are chemosensory organelles that detect biliary nucleotides through ciliary P2Y(12) receptors and transduce corresponding signals into a cAMP response.
Data‐driven adaptive decomposition of multicomponent seabed recordings (2003)

PreviousNext No AccessSEG Technical Program Expanded Abstracts 2003Data‐driven adaptive decomposition of multicomponent seabed recordingsAuthors: Remco MuijsKlaus HolligerJohan RobertssonRemco MuijsSwiss Federal Institute of Technology, Klaus HolligerSwiss Federal Institute of Technology, and Johan RobertssonSchlumbergerhttps://doi.org/10.1190/1.1818079 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InReddit Permalink: https://doi.org/10.1190/1.1818079FiguresReferencesRelatedDetails SEG Technical Program Expanded Abstracts 2003 ISSN (print):1052-3812 ISSN (online):1949-4645 Copyright: 2003 Pages: 2452 publication data© 2003 Copyright © 2003 Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished Online: 03 Jan 2005 CITATION INFORMATION Remco Muijs, Klaus Holliger, and Johan Robertsson, (2003), "Data‐driven adaptive decomposition of multicomponent seabed recordings," SEG Technical Program Expanded Abstracts : 873-876. https://doi.org/10.1190/1.1818079 Plain-Language Summary PDF DownloadLoading ...
Improved performance of SiGe nanocrystal memory with VARIOT tunnel barrier (2006)

The authors have fabricated a nonvolatile flash-memory device using SiGe nanocrystal floating gate with new variable oxide thickness (VARIOT) tunnel barrier. It is found that the writing speed of VARIOT sample is almost hundred times faster at a low programming voltage of 5-8 V compared to the traditional flash memory with single-layer tunnel barrier. The results have shown that a long-charge retention time of up to 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">6</sup> s and a good endurance characteristics of up to 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">6</sup> write/erase cycles can be achieved at 85 degC
Miniaturization for ultrathin metamaterial perfect absorber in the VHF band (2017)

An efficient resolution for ultrathin metamaterial perfect absorber (MPA) is proposed and demonstrated in the VHF radio band (30-300 MHz). By adjusting the lumped capacitors and the through vertical interconnects, the absorber is miniaturized to be only λ/816 and λ/84 for its thickness and periodicity with respect to the operating wavelength (at 102 MHz), respectively. The detailed simulation and calculation show that the MPA can maintain an absorption rate over 90% in a certain range of incident angle and with a wide variation of capacitance. Additionally, we utilized the advantages of the initial single-band structure to realize a nearly perfect dual-band absorber in the same range. The results were confirmed by both simulation and experiment at oblique incidence angles up to 50°. Our work is expected to contribute to the actualization of future metamaterial-based devices working at radio frequency.
An activating mutation in the <i>CSF3R</i> gene induces a hereditary chronic neutrophilia (2009)

We identify an autosomal mutation in the CSF3R gene in a family with a chronic neutrophilia. This T617N mutation energetically favors dimerization of the granulocyte colony-stimulating factor (G-CSF) receptor transmembrane domain, and thus, strongly promotes constitutive activation of the receptor and hypersensitivity to G-CSF for proliferation and differentiation, which ultimately leads to chronic neutrophilia. Mutant hematopoietic stem cells yield a myeloproliferative-like disorder in xenotransplantation and syngenic mouse bone marrow engraftment assays. The survey of 12 affected individuals during three generations indicates that only one patient had a myelodysplastic syndrome. Our data thus indicate that mutations in the CSF3R gene can be responsible for hereditary neutrophilia mimicking a myeloproliferative disorder.
The structural polypeptide VP3 of infectious bursal disease virus carries group- and serotype-specific epitopes (1991)

Two independent non-overlapping epitopes could be demonstrated on the structural protein VP3 of infectious bursal disease virus by non-neutralizing monoclonal antibodies produced against serotypes I and II. Both serotypes have one epitope in common, whereas the second epitope is distinct for serotype I and serotype II.
Ispitivanje izvorišta vode namijenjenih javnoj vodoopskrbi na području Zadarske županije u 2009. godini (2010)

U sijecnju 2009. godine Ministarstvo zdravstva i socijalne skrbi, a na temelju prijedloga Hrvatskog zavoda za javno zdravstvo, donijelo je Plan programa monitoringa izvorista vode namijenjenih javnoj vodoopskrbi. Plan je obuhvatio izvorista namijenjena javnoj vodoopskrbi (od 500 i vise korisnika), a potrebno ga je bilo provesti u obimu analize „C“ iz Priloga II. Pravilnika o zdravstvenoj ispravnosti vode za pice („NN“ 47/08) Hrvatski zavod za javno zdravstvo, kao nositelj monitoringa, izradio je i dostavio Plan monitoringa izvorista za 2009. godinu prema kojemu je u Zadarskoj županiji bilo obuhvaceno 18 vodocrpilista. Svako od ovih vodocrpilista opskrbljuje vise od 500 stanovnika. Svako od 12 vecih vodocrpilista u nasoj Županiji opskrbljuje vise od 5.000 stanovnika. Broj uzoraka koje je bilo potrebno uzeti u toku jedne godine prema cl. 13. Pravilnika o zdravstvenoj ispravnosti vode za pice je 88. Na traženje Ministarstva zdravstva i socijalne skrbi obavljeno je optimiziranje broja uzoraka u prvoj godini provođenja monitoringa. Na temelju toga, s podrucja Zadarske županije potrebno je bilo uzeti 44 uzorka vode na „C“ analizu, sto iznosi 50 % od  predviđenog. Uzorkovanje je vrseno od svibnja do prosinca 2009. godine. Vode s podrucja Zadarske županije uzorkovali su djelatnici Službe za zdravstvenu ekologiju, Zavoda za javno zdravstvo Zadar. Služba za zdravstvenu ekologiju Zavoda za javno zdravstvo Zadar je akreditirana prema normi „Opci zahtjevi za osposobljenost ispitnih i umjernih laboratorija“ - HRN EN ISO/IEC 17025:2007 (Standard: ISO/IEC 17025:2005+Cor.1:2006; EN ISO/IEC 17025:2005+Ac:2006).
A direct technique for preparation of magnetically functionalised living yeast cells (2009)

A direct technique for preparation of magnetically functionalised yeast cells by using polyelectrolyte mediated deposition of magnetite nanoparticles is reported. We demonstrate that the cells preserve their viability after the magnetite deposition and show that the magnetic nanoparticles form a multilayered coating on the outer side of the yeast cell’s wall. We applied our technique to produce magnetically functionalised yeast cells expressing green fluorescent protein (GFP) under the control of RAD54-GFP reporter and demonstrated that their fluorescence emission is not influenced by the presence of magnetite-polyelectrolyte composite coating. We show that the individual cells can be successfully manipulated by an external magnetic field which can be used for their deposition, holding and subsequent removal from microfluidic devices for genotoxicity and cytotoxicity biosensor applications. Our technique for direct magnetization of cells can find many other biotech applications including biosensors, bioreactors and bioseparation.
An algorithm for array variable clustering (2002)

During synthesis of behavioral descriptions array variables are implemented with memory modules. In this paper we show that simple one-to-one mapping between the array variables and the memory modules lead to inefficient designs. We propose a new algorithm, MeSA, which computes for a given set of array variables, (a) the number of memory modules, (b) the size of each module (c) the number of ports on each module and (d) and the grouping of array variables assigned to each memory module. The effects of address translations are incorporated into the algorithm. While most previous research efforts have concentrated on scalar variables, the primary focus in this paper is deriving efficient storage assignment for array variables.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
A Miniaturized Metamaterial Absorber for Ultrahigh-Frequency RFID System (2016)

An ultrahigh-frequency (UHF) miniaturized metamaterial absorber (MMA) using incurved square loop loaded with lumped resistors is proposed in this letter. The size of the unit cell is miniaturized to be only 20 × 20 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> , about 0.0036λ <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> at the center frequency (910 MHz), which is only a quarter of the size of a conventional UHF metamaterial absorber unit cell. Detailed simulations and experimental results show that the MMA covers the worldwide UHF radio frequency identification (RFID) operation band (860-960 MHz) with absorptivity more than 90% over a certain range of incident angles. Thus, the MMA can be used to improve performance of RFID systems, especially suitable for the use in restricted spaces.
Conditioning Prices on Purchase History (2005)

The rapid advance in information technology now makes it feasible for sellers to condition their price offers on consumers’ prior purchase behavior. In this paper we examine when it is profitable to engage in this form of price discrimination when consumers can adopt strategies to protect their privacy. Our baseline model involves rational consumers with constant valuations for the goods being sold and a monopoly merchant who can commit to a pricing policy. Applying results from the prior literature, we show that although it is feasible to price so as to distinguish high-value and low-value consumers, the merchant will never find it optimal to do so. We then consider various generalizations of this model, such as allowing the seller to offer enhanced services to previous customers, making the merchant unable to commit to a pricing policy, and allowing competition in the marketplace. In these cases we show that sellers will, in general, find it profitable to condition prices on purchase history.
2-Pyrrolidinemethanol, α,α-Diphenyl-1-(phenylmethyl)-, 1-Oxide, (1<i>R</i>,2<i>S</i>)- (2015)

[170642-56-5] C24H25NO2 (MW 359.46) InChI = 1S/C24H25NO2/c26-24(21-13-6-2-7-14-21,22-15-8-3-9-16-22)23-17-10-18-25(23,27)19-20-11-4-1-5-12-20/h1-9,11-16,23,26H,10,17-19H2/t23-,25+/m0/s1 InChIKey = GTRIXTQIEHASPD-UKILVPOCSA-N (ring opening of epoxides,1 kinetic resolution,4 enantioselective reduction of propiophenone,5 enantioselective cyanosilylation of acetophenone2, 6) Alternate Name: (1R,2S)-1-benzyl-2-(hydroxydiphenylmethyl)pyrrolidine 1-oxide. Physical Data: mp 190–193 °C1 or 185–187 °C2; α D 20 = + 58.2 ° (c = 0.55 in CHCl3)1 or α D 29 = + 64.4 ° (c = 0.55 in CHCl3).2 Form Supplied in: white crystalline solid, stable. Preparative Methods: the reagent can be prepared starting from commercially available N-benzyl-l-proline ethyl ester (955-40-8) (eq 1). Addition of phenyl magnesium bromide to N-benzyl-l-proline ethyl ester in THF at −10 °C to room temperature under nitrogen affords (S)-(1-benzylpyrrolidin-2-yl)diphenylmethanol ([118970-95-9). Oxidizing the (S)-(1-benzylpyrrolidin-2-yl)diphenylmethanol with 3-chloroperbenzoic acid in the presence of K2CO3 in CH2Cl2 at −78 C to room temperature gives the product.1, 3 (1) Handling, Storage, and Precautions: wear goggles and rubber gloves in a fume hood while handling. Keep in a tightly closed dry container stored in a cool place.
Understanding user behavior in large-scale video-on-demand systems (2006)

Video-on-demand over IP (VOD) is one of the best-known examples of "next-generation" Internet applications cited as a goal by networking and multimedia researchers. Without empirical data, researchers have generally relied on simulated models to drive their design and developmental efforts. In this paper, we present one of the first measurement studies of a large VOD system, using data covering 219 days and more than 150,000 users in a VOD system deployed by China Telecom. Our study focuses on user behavior, content access patterns, and their implications on the design of multimedia streaming systems. Our results also show that when used to model the user-arrival rate, the traditional Poisson model is conservative and overestimates the probability of large arrival groups. We introduce a modified Poisson distribution that more accurately models our observations. We also observe a surprising result, that video session lengths has a weak inverse correlation with the video's popularity. Finally, we gain better understanding of the sources of video popularity through analysis of a number of internal and external factors.
Preparation and some reactions of substituted thieno[3,4-b]furans (1986)

Treatment of a variety of 3-hydroxythiophenes with either an excess of methyl or ethyl bromoacetate and anhydrous potassium carbonate in acetonitrile under reflux, or in DMSO at room temperature, gave the 3-alkoxy derivatives in good to excellent yields. Utilization of the Dieckmann condensation, using either sodium alkoxide–alcohol or sodium hydride–benzene as base, afforded substituted thieno[3,4-b]furans in moderate to good yields. These compounds were found to exist predominantly in either the keto or enol form dependant upon the nature of substitution in the thiophene ring. Derivatives prepared from thieno[3,4-b]furan compounds showed that the system exhibited the chemical properties associated with ketones, enols, and β-keto esters. In addition the allyl ether was formed from 3-hydroxy-2,4-bismethoxycarbonylthieno[3,4-b]furan which underwent the Claisen rearrangement upon distillation.