gebhart/patrepeval huggingface dataset:
Water Alternating CO2 Injection Process - Does Modifying the Salinity of Injected Brine Improve Oil Recovery? (2015)

In the recent past, IOR/EOR technologies have been modified to include the effects of salinity of injected brine on oil recovery. Water Alternating Gas (WAG) is one such tertiary oil recovery process in the field. It greatly improves the synergy of various individual mechanisms underlining EOR processes, such as ion exchange, wettability alteration, and mobility control. This process has matured over the years, but the alteration of the salinity of injected brine during WAG has not been experimented extensively. This paper investigates the effect of injected brine salinity during water-alternating-CO2 injection and compares its performance with standalone brine injection, using 20 in. length outcrop Grey Berea sandstone cores. The water alternating CO2 process was done under immiscible conditions. It also studies the effect of aging on the oil recovery during waterflooding process. In the present work, six coreflood experiments were performed: four experiments before aging the cores and two experiments after aging the cores. All of the experiments were done at 149°F. The evaluation of oil recovery and pressure drop were done for each coreflood. The effect of salinity on the rock wettability during waterflooding and water alternating CO2 processes was studied using axisymmetric contact angle measurements. The effect of salinity on the waterflooding process as well as water alternating CO2 injection process was observed through the coreflood experiments. Low-salinity brine gave the highest recovery during the waterflooding process in aged cores, and seawater brine gave the highest recovery during water alternating CO2 injection process. Wettability alteration towards a more water-wet state was the cause of improved oil recovery by low-salinity brine during the waterflooding process. The lower solubility of CO2 in seawater brine compared to the solubility of CO2 in low-salinity brine was the reason for the higher oil recovery by seawater brine during water alternating CO2 injection process. Fines migration was observed during low-salinity brine alternating CO2 injection process. Aging played an important role in the recovery of oil during the waterflooding process. There was greater oil recovery in aged cores compared to unaged cores. The salinity of brine affected the contact angle measurements of the Grey Berea sandstone rock. The rock was strongly water-wet in the presence of low-salinity brine. Seawater brine made the rock more oil-wet due to the ion binding nature of the divalent ions in seawater brine. The aging of the cores increased the contact angle of the rock, thereby making the rock more oil-wet.
Repetition of Ischemic Preconditioning Augments Endothelium-Dependent Vasodilation in Humans (2007)

These findings suggest that repetition of late IPC stimulus augments endothelium-dependent vasodilation in humans through increases in nitric oxide production and number of EPCs under a local condition. Repetition of IPC stimulus may be a simple, safe, and feasible therapeutic technique for endothelial protection of peripheral vessels.
An investigation into breaker reclosure strategy for adaptive single pole autoreclosing (1995)

The effectiveness of single pole autoreclosure (SPAR) in maintaining power system stability is largely determined by the speed with which secondary arc extinction, and hence autoreclosure, can be achieved. Some work in adaptive autoreclosure has introduced the strong possibility of bringing some measure of adjusting dead times by accurately identifying arc extinction times. However, although the secondary arc extinction time provides a good indication of when to reclose, reclosure of the circuit breakers immediately following arc extinction will normally result in a restrike of the fault. This is because a further finite time is required to allow the fault arc path to deionise fully, so that the transmission line may withstand the full system voltage on reenergisation. The paper is thus concerned with identifying the length of this additional delay period (after secondary arc extinction), so that in conjunction with adaptive autoreclosure techniques, the optimal reclosure time can be determined.
Accelerated Electrochemical Investigation of Li Plating Efficiency as Key Parameter for Li Metal Batteries Utilizing a Scanning Droplet Cell (2021)

Abstract The scanning droplet cell (SDC) allows for automatized electrochemical experiments leading to time‐saving and reproducible experimental conditions. Its implementation for non‐aqueous battery research is discussed, and the necessary adaptations to be operated inside an Ar‐filled glovebox in complete absence of oxygen and moisture are described. Due to the importance of the use of Li metal electrodes for next‐generation high‐energy batteries, the complex multi‐parameter optimisation of the Li plating/stripping processes are investigated by means of the SDC. In particular, the influence of pulsed Li plating protocols on the coulombic efficiency is evaluated. The results clearly show that fine tuning of the parameters of pulsed Li plating protocols, i. e. the relaxation period and Li plating duration, is required to improve Li plating efficiencies at high current densities.
Influence of Nickel Foam Pore Structure on the High-Rate Capability of Nickel/Metal-Hydride Batteries (2007)

The influence of nickel foam pore structure on the high-rate capability of nickel/metal-hydride batteries was studied to develop a substrate suitable for high-power use. Three types of nickel foam substrates with different pore structures were used for preparing the sealed cells. Among the three prepared sealed cells, the cell using the substrate with a smallest pore diameter and largest surface area exhibited the best high-rate discharging performance. The electrochemical impedance measurement also showed a close relationship between the charge-transfer resistance and the pore structure of the substrate. The contact area between the current collector and the active material is considered to significantly affect the contact resistance and the charge-transfer resistance. The pore-size reduction and the enlargement of the surface area of the substrate were revealed to be effective in improving the high-rate performance of batteries.
Wound healing assay in a low-cost microfluidic platform (2013)

Cell migration is a very important stage in different pathological processes such as wound healing, vascularisation, immune response, tissue regeneration and cancer. Traditional wound healing assays are done by scratching a monolayer on standard culture surfaces. However this method can lead to data misinterpretation and poor comparability in results from different experiments. The microfluidic wound healing assay is a mature alternative to the traditional method, but it is expensive and bulky due to the need of syringe pumps and can be difficult to implement by the end user. Here we show an alternative low-cost microfluidic platform based on the MainSTREAM platform. We also demonstrate the feasibility of a microperistaltic pump to carry out these kind of assays. A laminar flow of PBS-Trypsin-PBS confined in a microfluidic channel with a previously cultured monolayer of IIB-Mel LES melanoma cells was used to generate the wound. Cell migration rate could be quantified successfully.
Quantum Zeno effect induced by quantum-nondemolition measurement of photon number (1992)

Measurements performed on a system will alter the dynamics of that system, and in the strong-measurement limit, can theoretically freeze the free evolution completely. This is the quantum Zeno effect. We utilize quantum-nondemolition photon-counting techniques to realize the Zeno effect on the evolution of either a two-level Jaynes-Cummings atom interacting with a resonant cavity mode, or on two electromagnetic modes configured as a multilevel parametric frequency converter. These systems interact with another electromagnetic cavity mode via a quadratic coupling system based on four-wave mixing and constructed so as to be a nondemolition measurement of the photon number. This mode is then coupled to the environment through the cavity mirrors. This measurement is shown to be a measurement of system populations, which generates the desired Zeno effect and in the strong-measurement limit will freeze the free dynamics of the system.
Immunophenotypic features of metastatic lymph node tumors to predict recurrence in N2 lung squamous cell carcinoma (2014)

Patients with mediastinal lymph node metastasis (N2) in squamous cell carcinoma (SqCC) of the lung have poor prognosis after surgical resection of the primary tumor. The aim of this study was to clarify predictive factors of the recurrence of pathological lung SqCC with N2 focusing on the biological characteristics of both cancer cells and cancer-associated fibroblasts (CAFs) in primary and metastatic lymph node tumors. We selected 64 patients with pathological primary lung N2 SqCC who underwent surgical complete resection and investigated the expressions of four epithelial-mesenchymal transition-related markers (caveolin, clusterin, E-cadherin, ZEB2), three cancer stem cell-related markers (ALDH-1, CD44 variant6, podoplanin) of cancer cells, and four markers of CAFs (caveolin, CD90, clusterin, podoplanin) in both primary and matched metastatic lymph node tumors in the N2 area. In the primary tumors, the expressions of all the examined molecules were not related to recurrence. However, in the metastatic lymph node tumors, high clusterin and ZEB2 expressions in the cancer cells and high podoplanin expression in the CAFs were significantly correlated with recurrence (P = 0.03, 0.04, and 0.007, respectively). In a multivariate analysis, only podoplanin expression in the CAFs in metastatic lymph node tumors was identified as a significantly independent predictive factor of recurrence (P = 0.03). Our study indicated that the immunophenotypes of both cancer cells and CAFs in metastatic lymph node tumors, but not primary tumors, provide useful information for predicting the recurrence of pathological N2 lung SqCC.
Exploration of glassy state in Prussian blue analogues (2022)

Prussian blue analogues (PBAs) are archetypes of microporous coordination polymers/metal-organic frameworks whose versatile composition allows for diverse functionalities. However, developments in PBAs have centred solely on their crystalline state, and the glassy state of PBAs has not been explored. Here we describe the preparation of the glassy state of PBAs via a mechanically induced crystal-to-glass transformation and explore their properties. The preservation of short-range metal-ligand-metal connectivity is confirmed, enabling the framework-based functionality and semiconductivity in the glass. The transformation also generates unconventional CN<sup>-</sup> vacancies, followed by the reduction of metal sites. This leads to significant porosity enhancement in recrystallised PBA, enabled by further accessibility of isolated micropores. Finally, mechanical stability under stress for successful vitrification is correlated to defect contents and interstitial water. Our results demonstrate how mechanochemistry provides opportunities to explore glassy states of molecular framework materials in which the stable liquid state is absent.
The bee venom peptide tertiapin underlines the role of IKACh in acetylcholine‐induced atrioventricular blocks (2000)

Acetylcholine (ACh) is an important neuromodulator of cardiac function that is released upon stimulation of the vagus nerve. Despite numerous reports on activation of I(KACh) by acetylcholine in cardiomyocytes, it has yet to be demonstrated what role this channel plays in cardiac conduction. We studied the effect of tertiapin, a bee venom peptide blocking I(KACh), to evaluate the role of I(KACh) in Langendorff preparations challenged with ACh. ACh (0.5 microM) reproducibly and reversibly induced complete atrioventricular (AV) blocks in retroperfused guinea-pig isolated hearts (n=12). Tertiapin (10 to 300 nM) dose-dependently and reversibly prevented the AV conduction decrements and the complete blocks in unpaced hearts (n=8, P<0.01). Tertiapin dose-dependently blunted the ACh-induced negative chronotropic response from an ACh-induced decrease in heart rate of 39+/-16% in control conditions to 3+/-3% after 300 nM tertiapin (P=0.01). These effects were not accompanied by any significant change in QT intervals. Tertiapin blocked I(KACh) with an IC(50) of 30+/-4 nM with no significant effect on the major currents classically associated with cardiac repolarisation process (I(Kr), I(Ks), I(to1), I:(sus), I(K1) or I(KATP)) or AV conduction (I(Na) and I(Ca(L))). In summary, tertiapin prevents dose-dependently ACh-induced AV blocks in mammalian hearts by inhibiting I(KACh).
Short-pulse fiber lasers (1996)

Summary form only given, as follows. Erbium-doped fibers have made it possible to develop compact, diode-pumped sources of ultrashort pulses for a variety of applications. Principles of operation and design criteria for high-repetition-rate picosecond soliton sources as well as for high-power femtosecond lasers are discussed.
Markov analysis of stochastic resonance in a periodically driven integrate-and-fire neuron (1999)

We model the dynamics of the leaky integrate-and-fire neuron under periodic stimulation as a Markov process with respect to the stimulus phase. This avoids the unrealistic assumption of a stimulus reset after each spike made in earlier papers and thus solves the long-standing reset problem. The neuron exhibits stochastic resonance, both with respect to input noise intensity and stimulus frequency. The latter resonance arises by matching the stimulus frequency to the refractory time of the neuron. The Markov approach can be generalized to other periodically driven stochastic processes containing a reset mechanism.
Renovaskulární onemocnění - klinický obraz, diagnostika a terapie (2009)

Renovaskularni onemocněni se klinicky projevuje dvěma hlavnimi symptomy – renovaskularni hypertenzi a ischemickou nefropatii. Je
způsobeno zuženim ledvinných tepen, nejcastěji na podkladu aterosklerozy. Meně castou přicinou je fibromuskularni dysplazie (postihuje
castěji mladsi jedince, vice ženy), arteritis, vzacně neurofibromatosis ci jina vzacna onemocněni ledvinne tepny.
Renovaskularni hypertenze je přicinou asi 1–5 % vsech hypertenzi, ale přicinna souvislost mezi zuženim ledvinne tepny a hypertenzi
neni vždy prokazana. Terapie je konzervativni (antihypertenziva + režimova opatřeni) a invazivni – v soucasnosti hlavně perkutannni
transluminalni renalni angioplastika (PTRA), sance na klinický uspěch je mnohem větsi u neateromatoznich lezi.
Ischemicka nefropatie může vest až ke ztratě funkce ledviny. Uspěsna PTRA může zlepsit ledvinnou funkci, nebo alespoň zastavit progresi
selhavani asi u 30–60 % připadů.
Dale jsou diskutovany specialni skupiny pacientů (děti, pacienti s transplantovanou ledvinou), technika a komplikace PTRA.
Static Upset Characteristics of the 90nm Virtex-4QV FPGAs (2008)

Radiation Test Consortium (XRTC) single-event measurements for three of the latest generation of radiation-tolerant reconfigurable FPGAs from Xilinx (90 nm, copper- interconnected, thin-epitaxial CMOS) are presented. Results include proton and heavy-ion upset susceptibilities for unclocked memory elements, high-temperature latchup immunity and a low SEFI rate (e.g., ~one/device-century in geosynchronous orbit).
[DNA sequencing by hybridization with oligonucleotides immobilized in a gel. Chemical ligation as a method of expanding the prospects for the method]. (1994)

Chemical ligation was used to obtain a series of modified DNA duplexes containing a substituted pyrophosphate internucleotide bound in a given site of the sugar-phosphate backbone. The efficiency of chemical ligation was shown to depend on the structure of the synthesis center for the modified internucleotide bond, thermosiability of the initial DNA complexes, as well as the nature of the non-nucleotide substituent. Maximal yields (up to 77%) were obtained with DNA complexes of regular structure using for condensation the H-butylamide oligonucleotide derivatives on the terminal phosphate group. Conditions were selected for rapid quantitative cleavage of the substituted pyrophosphate bond in aqueous medium (pH 8.0). It was established that modified oligonucleotides which have a phosphoester bond between the phosphate group and the non-nucleotide substituent are more labile than the corresponding compounds with a phosphoamide bond. The results obtained may be useful for DNA sequencing by hybridization with a set of oligonucleotides. This will allow one to achieve unambiguous recognition of nucleotide sequences containing DNA with repeats and thus extend considerably the sphere of application of the method.
The hierarchical multi-bank DRAM: a high-performance architecture for memory integrated with processors (2002)

A microprocessor integrated with DRAM on the same die has the potential to improve system performance by reducing the memory latency and improving the memory bandwidth. However a high performance microprocessor will typically send more accesses than the DRAM can handle due to the long cycle time of the embedded DRAM, especially in applications with significant memory requirements. A multi-bank DRAM can hide the long cycle time by allowing the DRAM to process multiple accesses in parallel, but it will incur a significant area penalty and will therefore restrict the density of the embedded DRAM main memory. In this paper we propose a hierarchical multi-bank DRAM architecture to achieve high system performance with a minimal area penalty. In this architecture, the independent memory banks are each divided into many semi-independent subbanks that share I/O and decoder resources. A hierarchical multi-bank DRAM with 4 main banks each composed of 32 subbanks occupies approximately the same area as a conventional 4 bank DRAM while performing like a 32 bank one-up to 65% better than a conventional 4 bank DRAM when integrated with a single-chip multiprocessor.
Grafting of butyl acrylate and methyl methacrylate on butyl rubber using electron beam radiation (2006)

Abstract Being nonpolar in nature, butyl rubber (IIR) has poor compatibility toward polar polymers and fillers. It can be improved by grafting polar substrates on the butyl elastomer. Radiation‐induced polymer processing is getting increasing interest, as it leads to new and improved polymers with desirable and interesting properties. In this investigation, electron beam radiation has been used to graft methyl methacrylate (MMA) and butyl acrylate (BA) on IIR. This process has several advantages over conventional grafting processes such as cationic polymerization (which needs very low temperature and stringent reaction conditions) and solution radical polymerization (which often needs solvent removal and recycling). The grafted polymers were characterized by using 1 H NMR, IR, TGA, and SEM analysis. The degree of grafting increases with a decrease in irradiation dose as well as with an increase in monomer concentration. It was observed that there was a decrease in intrinsic viscosity in irradiated IIR samples, indicating the chain scission. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 1340–1346, 2006
Origin and Early Evolution of Life. Tom Fenchel. (2002, Oxford University Press.) 171 pages, 7 color plates (2008)

October 01 2008 Origin and Early Evolution of Life. Tom Fenchel. (2002, Oxford University Press.) 171 pages, 7 color plates In Special Collection: CogNet David Deamer David Deamer * Department of Chemistry and Biochemistry, University of California, Santa Cruz, 1156 High Street, Santa Cruz, CA 95064. E-mail: deamer@chemistry.ucsc.edu Search for other works by this author on: This Site Google Scholar Author and Article Information David Deamer * Department of Chemistry and Biochemistry, University of California, Santa Cruz, 1156 High Street, Santa Cruz, CA 95064. E-mail: deamer@chemistry.ucsc.edu Online ISSN: 1530-9185 Print ISSN: 1064-5462 © 2008 Massachusetts Institute of Technology2008 Artificial Life (2008) 14 (4): 471–472. https://doi.org/10.1162/artl.2008.14.4.14405 Cite Icon Cite Permissions Share Icon Share Facebook Twitter LinkedIn Email Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Search Site Citation David Deamer; Origin and Early Evolution of Life. Tom Fenchel. (2002, Oxford University Press.) 171 pages, 7 color plates. Artif Life 2008; 14 (4): 471–472. doi: https://doi.org/10.1162/artl.2008.14.4.14405 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 JournalsArtificial Life Search Advanced Search This content is only available as a PDF. © 2008 Massachusetts Institute of Technology2008 Article PDF first page preview Close Modal You do not currently have access to this content.
Phase Diagram of Neutral Quark Matter at Moderate Densities (2006)

We discuss the phase diagram of moderately dense, locally neutral three-flavor quark matter using the framework of an effective model of quantum chromodynamics with a local interaction. The phase diagrams in the plane of temperature and quark chemical potential as well as in the plane of temperature and lepton-number chemical potential are discussed.
DNA binding sites recognised in vitro by a knotted class 1 homeodomain protein encoded by the hooded gene, k, in barley (Hordeum vulgare) (1997)

The homeodomain of the knotted classes of transcription factors from plants differs from the well characterized Antp/En type homeodomains from Drosophila at key amino acid residues contributing to the DNA binding. A cDNA, Hvh21, derived from the hooded gene and encoding a full length homolog of knotted1 from maize was isolated from barley seedlings and expressed as a maltose binding protein fusion in E. coli. The purified HvH21-fusion protein selected DNA fragments with 1-3 copies of the sequence TGAC. Gel shift experiments showed that the TGAC element was required for binding and the results further indicate that the HvH21-fusion protein binds DNA as a monomer.
Effects of pinaverium bromide on the development of visceral hypersensitivity and expression of proteinase activated-receptor 2 (2010)

Objective To investigate the effect of pinaverium bromide on the development of visceral hypersensitivity and the expression of proteinase-activated-receptor 2(PAR2)in rats with water avoidance stress (WAS).Methods The Wistar rats were randomly divided into 3 groups with 12 each.The control group was submitted to sham-WAS and the group A1 was submitted to WAS.The rats in group A2 were submitted to WAS and received pinaverium bromide treatment (30 mg·kg~(-1)·d~(-1)).The stool pellets were counted during WAS and sham-WAS.The magnitude of visceromotor response (VMR) during colorectal distention was used to measure the changes of visceral hypersensitivity.The PAR2 expression was detected by immunofluorescence staining and Western blotting.Results Increased stool pellets were found in group A1 compared to the control group (8.10±2.75 vs.4.13±1.36,P<0.001).Pinaverium bromide treatment decreased stool pellets during WAS (5.87±1.78,P<0.001).The magnitude of VMR (60 mmHg) was higher in group Al compared to the control group (8.64±2.88 vs.3.80±1.04,P<0.001).Pinaverium bromidetreatment could decrease the magnitude of VMR effectively after WAS (6.09±0.77,P=0.02).The expression of PAR2 in group Al was significantly higher than that in the control group (rAU:0.70±0.06 vs.0.32±0.04;M:279.08±100.91 vs.77.16±10.74,P<0.001).The increased PAR2 expression induced by WAS could be inhibited by pinaverium bromide (rAU:0.53±0.06,IA:180.59±25.75,P<0.05).Conclusions Pinaverium bromide may decrease the expression of PAR2 and inhibit the development of visceral hypersensitivity in WAS rats.

Key words: 
Visceral hypersensitivity; Pinaverium bromide; Proteinase activated-receptor 2