gebhart/patrepeval huggingface dataset:
An Experimental Study of Elastic Wave Propagation Anisotropy and Permeability Anisotropy In an Illitic Shale (1998)

An Experimental Study of Elastic Wave Propagation an Isotropy and Permeability an Isotropy In an Illitic Shale. C. Jones; C. Jones Heriot Watt University Search for other works by this author on: This Site Google Scholar P. Meredith P. Meredith Geological Science University College London Search for other works by this author on: This Site Google Scholar Paper presented at the SPE/ISRM Rock Mechanics in Petroleum Engineering, Trondheim, Norway, July 1998. Paper Number: SPE-47369-MS https://doi.org/10.2118/47369-MS Published: July 08 1998 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Get Permissions Search Site Citation Jones, C., and P. Meredith. "An Experimental Study of Elastic Wave Propagation an Isotropy and Permeability an Isotropy In an Illitic Shale.." Paper presented at the SPE/ISRM Rock Mechanics in Petroleum Engineering, Trondheim, Norway, July 1998. doi: https://doi.org/10.2118/47369-MS Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll ProceedingsSociety of Petroleum Engineers (SPE)SPE/ISRM Rock Mechanics in Petroleum Engineering Search Advanced Search AbstractShales are highly anisotropic and are generally characterized by very low permeabilities. In this paper we report results of an experimental study of the relationship between elastic wave propagation anisotropy and permeability anisotropy of an illitic shale.Elastic wave velocity was measured as a function of angle relative to the bedding plane orientation. Radial compressional and shear wave velocities were measured around the circumference of a core taken parallel to the bedding of the shale. The shale was highly anisotropic.Permeability measurements were then taken for cores oriented in the directions of the maximum and minimum velocities. The permeability was measured using a novel steady-state-flow permeameter capable of measuring extremely low flow rates of water, brine, or oil. At low effective pressure the shale was highly anisotropic, but the anisotropy reduced to zero at high effective pressure.We compare the shale results with those from measurements on a sandstone and a tuff, where permeability anisotropy is maintained even up to the highest effective pressures used.P. 307 Keywords: permeability anisotropy, sandstone, shale, experimental study, effective pressure, illitic shale, variation, compressional wave velocity, velocity anisotropy, aspect ratio pore Subjects: Reservoir Characterization, Reservoir Fluid Dynamics, Flow in porous media This content is only available via PDF. 1998. Society of Petroleum Engineers You can access this article if you purchase or spend a download.
Fingerprint ridges frequency (2011)

This work is a study about the fingerprint ridge distance and presents an efficient algorithm to estimate the values of local ridge frequency. Most of fingerprint image enhancement algorithms use an anisotropic filters with frequency response. Therefore, ridges frequency, as a global feature of fingerprint, is very important to image preprocessing methods used in automatic fingerprint identification system (AFIS). In proposed algorithm, through the use of fingerprint direction image, the frequency values are calculated directly, without the use of computationally expensive spectral analysis.
Molecular Basis of Cardioprotection (2015)

Reperfusion is mandatory to salvage ischemic myocardium from infarction, but reperfusion per se contributes to injury and ultimate infarct size. Therefore, cardioprotection beyond that by timely reperfusion is needed to reduce infarct size and improve the prognosis of patients with acute myocardial infarction. The conditioning phenomena provide such cardioprotection, insofar as brief episodes of coronary occlusion/reperfusion preceding (ischemic preconditioning) or following (ischemic postconditioning) sustained myocardial ischemia with reperfusion reduce infarct size. Even ischemia/reperfusion in organs remote from the heart provides cardioprotection (remote ischemic conditioning). The present review characterizes the signal transduction underlying the conditioning phenomena, including their physical and chemical triggers, intracellular signal transduction, and effector mechanisms, notably in the mitochondria. Cardioprotective signal transduction appears as a highly concerted spatiotemporal program. Although the translation of ischemic postconditioning and remote ischemic conditioning protocols to patients with acute myocardial infarction has been fairly successful, the pharmacological recruitment of cardioprotective signaling has been largely disappointing to date.
Antimicrobial activity of extracts and a germacranolidetype sesquiterpene lactone from Tithonia diversifolia leaf extract (2006)

The in vitro antimicrobial activity of the hexane, ethyl acetate and methanol extracts of the leaf of Tithonia diversifolia, and one sesquiterpene lactone 1 isolated from the ethyl acetate extract was studied. Of the fourteen strains of bacteria used, the ethyl acetate extract was the most active, showing inhibitory activity against five Gram +ve and two Gram ‐ve organisms. This was followed by the hexane extract and then methanol. The ethyl acetate fractions (TDE 2 ‐ TDE 5, TDE 7, TDE 8 and TDE 10) showed varying degrees of inhibitory activity. The sesquiterpene lactone 1 showed activity against all the tested microorganisms, except Staphylococcus aureus and Bacillus cereus (MICs = 15.6 ‐ 62.5 μg/ml for most stains). All the extracts, fractions and compound 1 showed activity against the fungus Candida albicans. The results of the present study indicate that the non-polar leaf extract of T. diversifolia could be useful in the treatment of some disease conditions and the sesquiterpene lactone 1 could be a good candidate as a phytotherapeutic agent against some bacterial infections.
One short well conserved region of<i>Alu</i>-sequences is involved in human gene rearrangements and has homology with prokaryotic<i>chi</i> (1995)

Alu elements have repeatedly been found involved in gene rearrangements in humans. Although these elements have been suggested to stimulate gene rearrangements, sparse information is available for the possible mechanism(s) of these events. Here we present a compilation of Alu elements that have been involved in recombinational events leading to gene rearrangements, indicating the presence of a common 26 bp core sequence at or close to the sites of recombination. Besides the obvious possibility of retrotransposition, gene rearrangements may be induced by sequences that stimulate genetic recombination. We suggest that the core sequence stimulates recombination and may thereby cause the frequent involvement of these elements in gene rearrangements. Curiously, the core sequence contains the pentanucleotide motif CCAGC, which is also part of chi, an 8 bp sequence known to stimulate recBC mediated recombination in Escherichia coli.
Fluorinated Pickering Emulsions Impede Interfacial Transport and Form Rigid Interface for the Growth of Anchorage-Dependent Cells (2014)

This study describes the design and synthesis of amphiphilic silica nanoparticles for the stabilization of aqueous drops in fluorinated oils for applications in droplet microfluidics. The success of droplet microfluidics has thus far relied on one type of surfactant for the stabilization of drops. However, surfactants are known to have two key limitations: (1) interdrop molecular transport leads to cross-contamination of droplet contents, and (2) the incompatibility with the growth of adherent mammalian cells as the liquid-liquid interface is too soft for cell adhesion. The use of nanoparticles as emulsifiers overcomes these two limitations. Particles are effective in mitigating undesirable interdrop molecular transport as they are irreversibly adsorbed to the liquid-liquid interface. They do not form micelles as surfactants do, and thus, a major pathway for interdrop transport is eliminated. In addition, particles at the droplet interface provide a rigid solid-like interface to which cells could adhere and spread, and are thus compatible with the proliferation of adherent mammalian cells such as fibroblasts and breast cancer cells. The particles described in this work can enable new applications for high-fidelity assays and for the culture of anchorage-dependent cells in droplet microfluidics, and they have the potential to become a competitive alternative to current surfactant systems for the stabilization of drops critical for the success of the technology.
Restored expression of vitamin D receptor and sensitivity to 1,25-dihydroxyvitamin D3 in response to disrupted fusion FOP2–FGFR1 gene in acute myeloid leukemia cells (2016)

We show in this paper that delivery of plasmid DNA to the cells may disrupt fusion gene FOP2-FGFR1 which occurs in a disease entity called 8p11 myeloproliferative syndrome. Inhibition of the FOP2-FGFR1 signal transduction pathway restored sensitivity of the cells to 1,25D-induced cell differentiation.
Reacciones adversas a fármacos en el anciano (2007)

– Efecto secundario. Efecto que se produce por la accion primaria del farmaco (p. ej., el uso del antibiotico de amplio espectro sobre la flora bacteriana intestinal). – Toxicidad. Efecto debido a la accion directa del farmaco que en dosis elevadas puede producir dano celular, como ocurre con la sobredosis de paracetamol e insuficiencia hepatica. – Intolerancia. Efecto que se produce como consecuencia de la distinta susceptibilidad que poseen los individuos a los farmacos. – Reaccion adversa. Efecto grave o perjudicial que se produce en dosis consideradas habituales con fines terapeuticos, profilacticos o para el diagnostico de una enfermedad, y que responde a la reduccion de dosis o a la retirada del farmaco.
Applications and Outcomes of Orbital and Transorbital Endoscopic Surgery (2011)

Orbital and transorbital endoscopy are versatile, effective, and safe approaches useful for addressing diverse urgent and elective problems. In appropriate clinical situations, these procedures may offer better access and visualization than open or transnasal approaches.
Characteristics of Four Sets of Reciprocal Crosses in Dendrobium (Orchidaceae) (1983)

Abstract Progenies of 4 sets of reciprocal crosses in Dendrobium were compared including an intraspecific cross, 2 interspecific crosses, and an amphidiploid cross. With the reciprocal crosses involving 2 accessions of D. canaliculatum (D173-2 and D129), offspring with cytoplasm of D173-2 (Papua, New Guinea accession) were taller, produced more pseudobulbs, and gave a higher flower yield than with D129. Offspring with the same D. canaliculatum cytoplasm also produced taller plants and more pseudobulbs in reciprocal crosses between D. canaliculatum and D. strebloceras . Reciprocal crosses of D. schulleri × D . × Sunset differed in chromosome number and flower quality. D. schulleri × D . × Sunset produced triploid offspring, while the reciprocal produced diploid offspring. Reciprocal matings of 2 amphidiploid D . × Jaquelyn Thomas selections did not differ in height, yield, number of pseudobulbs, or floral characteristics.
<title>Radiology image orientation processing for workstation display</title> (1998)

Radiology images are acquired electronically using phosphor plates that are read in Computed Radiology (CR) readers. An automated radiology image orientation processor (RIOP) for determining the orientation for chest images and for abdomen images has been devised. In addition, the chest images are differentiated as front (AP or PA) or side (Lateral). Using the processing scheme outlined, hospitals will improve the efficiency of quality assurance (QA) technicians who orient images and prepare the images for presentation to the radiologists.
Molecular genetics of actin function (1993)

Research Article| May 01 1993 Molecular genetics of actin function E S Hennessey; E S Hennessey 1Department of Biology, University of York, Y01 5DD, U.K. Search for other works by this author on: This Site PubMed Google Scholar D R Drummond; D R Drummond 1Department of Biology, University of York, Y01 5DD, U.K. Search for other works by this author on: This Site PubMed Google Scholar J C Sparrow J C Sparrow 1Department of Biology, University of York, Y01 5DD, U.K. Search for other works by this author on: This Site PubMed Google Scholar Biochem J (1993) 291 (3): 657–671. https://doi.org/10.1042/bj2910657 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Facebook Twitter LinkedIn MailTo Cite Icon Cite Get Permissions Citation E S Hennessey, D R Drummond, J C Sparrow; Molecular genetics of actin function. Biochem J 1 May 1993; 291 (3): 657–671. doi: https://doi.org/10.1042/bj2910657 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll JournalsBiochemical Journal Search Advanced Search This content is only available as a PDF. © 1993 The Biochemical Society, London1993 Article PDF first page preview Close Modal You do not currently have access to this content.
Double sampling data checking technique: an online testing solution for multisource noise-induced errors on on-chip interconnects and buses (2004)

With processors and system-on-chips using nano-meter technologies, several design and test efforts have been recently developed to eliminate and test for many emerging DSM noise effects. In this paper, we show the emergence of multisource noise effects, where multiple DSM noise sources combine to produce functional and timing errors even when each separate noise source itself does not. We show the dynamic nature of multisource noise, and the need for online testing to detect such noise errors. We propose an online approach based on low-cost double-sampling data checking circuit to test for such noise effects in on-chip buses. Based on the proposed circuit, an effective and efficient testing methodology has been developed to facilitate online testing for generic on-chip buses. The applicability of this methodology is demonstrated through embedding the online detection circuit in a bus design. The validated design shows the effectiveness of the proposed testing methodology for multisource noise-induced errors in global interconnects and buses.
Asymmetric Cyanation of Activated Olefins with Ethyl Cyanoformate Catalyzed by a Modular Titanium Catalyst (2010)

Asymmetric cyanation of a class of easily available olefins with a favorable cyanide source ethyl cyanoformate (CNCOOEt) was realized by an interesting modular catalyst. High yields and ee values were obtained for a range of substrates under solvent-free and mild reaction conditions. The products obtained could be easily transformed to the enantioenriched useful intermediates 5, 6, and pharmaceutically important gamma-aminobutyric acid 7.
Sostenibilidad de los grupos de autoayuda en la India : dos analisis (2007)

The self-help group (SHG) model is the dominant form of microfinance in India. SHGs have grown explosively in recent years. It is reported that by March 2006, 2.23 million SHGs were reaching about 33 million members. Such outreach appears to represent a major breakthrough in a country where 50 million households live in poverty, with very limited access to financial services. This occasional paper reports on two separate studies of SHG programs conducted by Consultative Group to Assist the Poorest (CGAP) staff and partners. In part one, Jennifer Isern, L. B. Prakash, Anuradha Pillai, and Syed Hashemi review SHGs developed by five different self-help promotion institutions (SHPIs), representing the main approaches to SHG promotion in India. The study looks primarily at the financial viability of these SHG programs. The study reported in part two was done by Robert Peck Christen and Gautam Ivatury for a leading commercial bank in India. This study proposes a methodology for designing SHG programs to ensure their sustainability.
Medium access control for asynchronous traffic in the AMNET lan (1995)

Abstract This paper describes a proposed medium access control (MAC) protocol for managing asynchronous traffic within the AMNET LAN. We have called the protocol the buffered access cycle (BAC) since it employs a centrally controlled access cycle in combination with an insertion buffer. The resulting mechanism allows asynchronous traffic to co‐exist with higher priority synchronous traffic, which is managed separately, and make best use of any available bandwidth. The protocol produces utilization figures superior to those of a centrally controlled access cycle scheme without an insertion buffer. Included in the paper are a description of the proposed scheme, a description of the AMNET protocol for managing synchronous traffic, and the results of various simulations.
Investigation of Acid Sites in a Zeotypic Giant Pores Chromium(III) Carboxylate (2006)

A study of the zeotypic giant pores chromium(III) tricarboxylate Cr(III)3OF(x)(OH)(1-x)(H2O)2 x {C6H3-(CO2)3}2 x nH2O (MIL-100) has been performed. First, its thermal behavior, studied by X-ray thermodiffractometry and infrared spectroscopy, indicates that the departure of water occurs without any pore contraction and no loss in crystallinity, which confirms the robustness of the framework. In a second step, IR spectroscopy has shown the presence of three distinct types of hydroxy groups depending on the outgassing conditions; first, at high temperatures (573 K), only Cr-OH groups with a medium Brønsted acidity are present; at lower temperatures, two types of Cr-H2O terminal groups are observed; and at room temperature, their relatively high Brønsted acidity allows them to combine with H-bonded water molecules. Finally, a CO sorption study has revealed that at least three Lewis acid sites are present in MIL-100 and that fluorine atoms are located on a terminal position on the trimers of octahedra. A first result of grafting of methanol molecules acting as basic organic molecules on the chromium sites has also been shown, opening the way for a postsynthesis functionalization of MIL-100.
Temperature Gradients: Part VII. Subsurface Temperature Gradients (1934)

The first part of this paper consists of a brief discussion of the correlation of temperature with structure and the possible causes of temperature variations over local and regional areas. The second part of the paper consists of a table in which are summarized certain constants deduced from the temperature records of 679 wells located in 23 states.
Hierarchical vector quantisation (1989)

We present a method of vector quantisation which trades off accuracy for speed of encoding. We achieve this by hierarchically structuring a multistage encoder so that each stage encodes low dimensional input vectors. Such hierarchical encoders may easily be realised as a set of fast table look-up operations. We demonstrate how the Euclidean distortion in such a multistage encoder is approximately minimised by using Kohonen's topographic mapping learning algorithm from neural network theory. We also demonstrate the performance of the technique on various stochastic time series. We find that there is little loss in encoding accuracy, when compared with the exact nearest neighbour encoding using an equivalent single stage encoder.
A sampling-based framework for parallel data mining (2005)

The goal of data mining algorithm is to discover useful information embedded in large databases. Frequent itemset mining and sequential pattern mining are two important data mining problems with broad applications. Perhaps the most efficient way to solve these problems sequentially is to apply a pattern-growth algorithm, which is a divide-and-conquer algorithm [9, 10]. In this paper, we present a framework for parallel mining frequent itemsets and sequential patterns based on the divide-and-conquer strategy of pattern growth. Then, we discuss the load balancing problem and introduce a sampling technique, called selective sampling, to address this problem. We implemented parallel versions of both frequent itemsets and sequential pattern mining algorithms following our framework. The experimental results show that our parallel algorithms usually achieve excellent speedups.
Substituted Cyclopentadienides of Magnesium from the Reaction of Dialkylmagnesium with Fulvenes (1998)

The reaction of n/sec-dibutyl magnesium with 6-methyl-6-phenyl- and 6,6-dicyclopropylfulvene gives the β-hydride transfer products 1,1′-bis(1-phenylethyl)- and 1,1′-bis-(dicyclopropylmethyl)magnesocene, respectively. The latter crystallizes in the eclipsed conformation, whereas the first one shows an anti conformation in the solid state. Dimethyl-magnesium deprotonates 6-methyl-6-phenylfulvene with formation of 1,1′-bis(1-phenylethen-1-yl)magnesocene, which decomposes upon isolation. The deprotonation of 6,6-dicyclopropylfulvene with MgMe2 in thf solution yields [bis(tetrahydrofuran-O)][iro{cyclopropane-1,2′(1′-η5-cyclopentadienyl-1′,3′,3′-tricyclopropyl-1′,2′,3′,3a′-tetrahydropentalene)}-3a′-6′-η2-enyl]magnesium. In the absence of β-hydrogen atoms at the organometallic reagent as well as at the fulvene the addition reaction is the only possible reaction pathway. Thus, one Mg–C bond of MgMe2 adds to tetramethylfulvene to give quantitatively dimeric methylmagnesium ethyltetramethylcyclopentadienide. The bridging methyl groups are sterically shielded against further attack of the fulvene.
Synthesis of high molecular weight and narrow molecular weight distribution poly(acrylonitrile) via RAFT polymerization (2012)

Abstract Well‐defined polyacrylonitrile (PAN) of high viscosity‐average molecular weight ( M η = 405,100 g/mol) was successfully synthesized using reversible addition‐fragmentation chain transfer polymerization. The polymerization exhibits controlled characters: molecular weights of the resultant PANs increasing approximately linearly with monomer conversion and keeping narrow molecular weight distributions. The addition of 0.01 equiv (relative to monomer acrylonitrile) of Lewis acid AlCl 3 in the polymerization system afforded the obtained PAN with an improved isotacticity (by 8%). In addition, the influence of molecular weights and molecular weight distributions of PANs on the morphology of the electrospun fibers was investigated. The results showed that, under the same conditions of electrospinning, average diameter (247–1094 nm) of fibers increased with molecular weights of PANs, and it was much easier to get “uniform” diameter fibers while using PANs with narrow molecular weight distributions as the precursor of electrospinning. © 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2013
[Human inward rectifying potassium current in myocytes isolated from patients with rheumatic atrial fibrillation]. (2006)

The data suggest I(K1) current increase might contribute to the electrical remodeling in RAF patients.
Potential Insulinominetic Agents of Zinc(II) Complexes with Picolinamide Derivatives: Preparations of Complexes, in Vitro and in Vivo Studies. (2002)

Following the finding of in vitro insulinominetic activities of new prepared Zn(II) complexes with amide ligands (2-picolinamide (pa-a) and 6-methyl-2-picolinmethylamide (6mpa-ma)) in isolated rat adipocytes treated with epinephrine in terms of inhibition of free fatty acid release, their blood glucose normalizing effects were observed on daily intraperitoneal injections for 14 d in a type 2 diabetes mellitus model animal, KK-Ay mice. The blood glucose levels of KK-Ay mice were maintained in a normal range during the administration of both complexes. After the administration of each complex for 14 d, the improvement of glucose metabolism was confirmed as judged by the glucose tolerance test.