gebhart/patrepeval huggingface dataset:
Process Variables of In Situ Combustion (1958)

Published in Petroleum Transactions, AIME, Volume 213, 1958, pages 28–35. Abstract This paper describes the results of a laboratory investigation conducted to obtain data for an evaluation of the in situ combustion process as a method of producing crude oil from reservoirs. Air and fuel requirements, rates of advance, combustion temperatures, and coke and fluid distributions are presented. The mechanism of oil recovery by in situ combustion is discussed. Five crude oils ranging in gravity from 10.9 to 34.2 API were produced from a semiadiabatic, unconsolidated sand pack by in situ combustion. Experimental conditions were varied over a wide range in order to determine the inter-relationships of process variables. The minimum air flux requirement for self-sustained combustion was found to be less than 10 scf/hr-ft. The rate of advance of a self-sustained combustion zone was found to be nearly proportional to the air flux at the combustion front. The effects of pressure and injected air flux were studied in a series of experiments using a 21.2 API crude. A minimum air requirement was observed at an air flux of 20 scf/hr-ft. The oil saturation consumed as fuel averaged 5.5 per cent of pore volume. The effect of air pressure was found to be small for experiments having high combustion efficiencies. This study should promote a better understanding of the problems and mechanisms involved in laboratory investigations and field applications of the in situ combustion process. The data presented will be useful in the interpretation of results of field tests. When tempered with volumetric sweep efficiencies, the data can be used in making preliminary economic appraisals of the process as applied to reservoirs containing high porosity unconsolidated media. Introduction The purpose of this work was to obtain laboratory data for an evaluation of the in situ combustion process as a method of producing crude oil from reservoirs. In situ combustion basically consists of (1) injecting air into a reservoir through selected input wells to create an air sweep through the reservoir,(2) igniting the crude at the injection well, and (3) propagating the combustion front through the reservoir by continued air injection. By this means, oil is swept toward producing wells in the area. The fuel for combustion is supplied by heavy residual material (coke) which has been deposited on the sand grains during distillation and cracking of the crude oil ahead of the combustion front.
Solid-state radio frequency oscillator for optogalvanic spectroscopy: Detection of nitric oxide using the 2-0 overtone transition (1986)

A compact, solid-state radio frequency oscillator of low-power consumption is described which allows quantitative measurement of the optogalvanic effect in low-pressure gas discharges. The oscillator has been used to record a portion of the 2-0 overtone band of nitric oxide at a pressure of ∼1 Torr using a tunable color-center laser operating at 2.65 μm.
Vacuum-Induced Tamponade for Treatment of Postpartum Hemorrhage (2021)

This observational study supports our pathophysiologic understanding of uterine atony: to treat an atonic uterus, uterine volume must be reduced, leading to coiling of the uterine spiral arteries and, hence, reduced blood loss.
The oxy-Cope rearrangement. Evidence for an intramolecular mechanism and an enolic intermediate (1968)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe oxy-Cope rearrangement. Evidence for an intramolecular mechanism and an enolic intermediateJerome A. Berson and Edward J. Walsh Jr.Cite this: J. Am. Chem. Soc. 1968, 90, 17, 4729–4730Publication Date (Print):August 1, 1968Publication History Published online1 May 2002Published inissue 1 August 1968https://pubs.acs.org/doi/10.1021/ja01019a040https://doi.org/10.1021/ja01019a040research-articleACS PublicationsRequest reuse permissionsArticle Views239Altmetric-Citations26LEARN 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
Assessing structure and stability of polymer/lithium-metal interfaces from first-principles calculations (2019)

Solid polymer electrolytes (SPEs) are promising candidates for Li metal battery applications, but the interface between these two categories of materials has so far been studied only to a limited degree.
Wnt pathway activation and ABCB1 expression account for attenuation of Proteasome inhibitor-mediated apoptosis in multidrug-resistant cancer cells (2015)

Multiple drug resistance (MDR) is a major obstacle to attenuating the effectiveness of chemotherapy to many human malignancies. Proteasome inhibition induces apoptosis in a variety of cancer cells and is recognized as a novel anticancer therapy approach. Despite its success, some multiple myeloma patients are resistant or become refractory to ongoing treatment by bortezomib suggesting that chemoresistant cancer cells may have developed a novel mechanism directed against the proteasome inhibitor. The present study aimed to investigate potential mechanism(s) of attenuation in a MDR cell line, MES-SA/Dx5. We found that compared to the parental human uterus sarcoma cell line MES-SA cells, MES-SA/Dx5 cells highly expressed the ABCB1 was more resistant to MG132 and bortezomib, escaping the proteasome inhibitor-induced apoptosis pathway. The resistance was reversed by co-treatment of MG132 and the ABCB1 inhibitor verapamil. The data indicated that ABCB1 might play a role in the efflux of MG132 from the MES-SA/Dx5 cells to reduce MG132-induced apoptosis. Furthermore, the canonical Wnt pathway was found activated only in the MES-SA/Dx5 cells through active β-catenin and related transactivation activities. Western blot analysis demonstrated that Wnt-targeting genes, including c-Myc and cyclin D1, were upregulated and were relevant in inhibiting the expression of p21 in MES-SA/Dx5 cells. On the other hand, MES-SA cells expressed high levels of p21 and downregulated cyclin D1 and caused cell cycle arrest. Together, our study demonstrated the existence and participation of ABCB1 and the Wnt pathway in an MDR cell line that attenuated proteasome inhibitor-induced apoptosis.
Coronary artery disease evolution in bare-metal stent implantation: safety and efficacy of REBEL™ platinum–chromium coronary stent system (2014)

Coronary artery disease affects over 5,000,000 people worldwide. Despite technology evolution and extension of indications of drug-eluting and bioresorbable stents, bare-metal stents play an important role to treat single lesions less than 15 mm of length and/or greater than 2.5 mm of diameter. The REBEL™ stent is made from a new platinum–chromium alloy combined with a customized stent architecture and an enhanced delivery system that allows improved performances of this stent such as high radial and axial strength and lower stent recoil. The feasibility and efficacy of percutaneous implantation has been studied worldwide with a prospective, single-arm, multicenter, clinical trial with a de novo atherosclerotic coronary artery lesion currently underway.
π Back-Bonding in Dibenzyl-β-diketiminato Copper Olefin Complexes (2009)

N,N'-Dibenzyl-4-amino-2-iminopent-3-ene, nacnacBnH, was obtained in a one-step synthesis starting from benzylamine and acetylacetone. Reaction of nacnacBnH with CuOtBu in the presence of various Lewis bases gave the corresponding copper complexes (nacnacBn)CuL (L: 2, styrene; 3, η2-acrylonitrile; 4, allyl phenyl ether; 5, stilbene; 7, xylylisonitrile; 8, triphenylphosphine). With diphenylacetylene (DPA) the dimeric complex {(nacnacBn)Cu}2(μ-DPA), 6, was obtained. In the presence of excess DPA, 6 coordinates additional acetylene to form the monomeric complex (nacnacBn)Cu(DPA), 6b. All complexes, with the exception of 4 and 6b, were characterized by X-ray diffraction studies. Structural and spectroscopic data indicate that π back-bonding in 2−8 is still weak when compared to other transition metals, but stronger than in most Cu(I) complexes. Olefin exchange experiments indicate preferred binding of electron-deficient olefins. Reaction of 3 with morpholine did not yield any hydroamination products, in agreement with significant π back-bonding toward the olefin.
PrivExec: Private Execution as an Operating System Service (2013)

Privacy has become an issue of paramount importance for many users. As a result, encryption tools such as True Crypt, OS-based full-disk encryption such as File Vault, and privacy modes in all modern browsers have become popular. However, although such tools are useful, they are not perfect. For example, prior work has shown that browsers still leave many traces of user information on disk even if they are started in private browsing mode. In addition, disk encryption alone is not sufficient, as key disclosure through coercion remains possible. Clearly, it would be useful and highly desirable to have OS-level support that provides strong privacy guarantees for any application -- not only browsers. In this paper, we present the design and implementation of PrivExec, the first operating system service for private execution. PrivExec provides strong, general guarantees of private execution, allowing any application to execute in a mode where storage writes, either to the filesystem or to swap, will not be recoverable by others during or after execution. PrivExec does not require explicit application support, recompilation, or any other preconditions. We have implemented a prototype of PrivExec by extending the Linux kernel that is performant, practical, and that secures sensitive data against disclosure.
Reduction of interference by high power HF radar transmitters (1997)

GEC-Marconi is involved in the development of a network of long-range skywave over-the-horizon radars for Australia, to provide wide area surveillance in the maritime approaches to the north and north west of Australia. High transmitter power must be provided for these radars to meet operational requirements. A basic transmitter subsystem consists of an array of antennas, with each being driven by a solid-state high power amplifier (HPA). An important requirement is for these radars to achieve new standards of performance in terms of noninterference with other users of the HF band by conforming to criteria taken from the US Department of Commerce NTIA Manual of Regulations and Procedures for Federal Radio Frequency Management. This paper is concerned with the purity of the transmitted signal. The NTIA Manual defines a spectral template within which the radar emissions must be confined. The conventional approach of simply weighting the transmitted radar waveform in order to control the out-of-band emission is inadequate and inefficient with the waveform parameters typically used for HF radar. Additionally, because of the high transmitter power to be used, high amplifier efficiency is required to reduce running costs. This requirement conflicts with the requirement for high amplifier linearity which is necessary to keep distortion products to a low level.
Novel <i>GPR34</i> and <i>CCR6</i> mutation and distinct genetic profiles in MALT lymphomas of different sites (2018)

Mucosa-associated lymphoid tissue (MALT) lymphoma originates from a background of diverse chronic inflammatory disorders at various anatomic sites. The genetics underlying its development, particularly in those associated with autoimmune disorders, is poorly characterized. By whole exome sequencing of 21 cases of MALT lymphomas of the salivary gland and thyroid, we have identified recurrent somatic mutations in 2 G-protein coupled receptors (<i>GPR34</i> and <i>CCR6</i>) not previously reported in human malignancies, 3 genes (<i>PIK3CD</i>, <i>TET2</i>, <i>TNFRSF14</i>) not previously implicated in MALT lymphoma, and a further 2 genes (<i>TBL1XR1</i>, <i>NOTCH1</i>) recently described in MALT lymphoma. The majority of mutations in <i>GPR34</i> and <i>CCR6</i> were nonsense and frameshift changes clustered in the C-terminal cytoplasmic tail, and would result in truncated proteins that lack the phosphorylation motif important for β-arrestin-mediated receptor desensitization and internalization. Screening of these newly identified mutations, together with previously defined genetic changes, revealed distinct mutation profiles in MALT lymphoma of various sites, with those of salivary gland characterized by frequent <i>TBL1XR1</i> and <i>GPR34</i> mutations, thyroid by frequent <i>TET2</i>, <i>TNFRSF14</i> and <i>PIK3CD</i> mutations, and ocular adnexa by frequent <i>TNFAIP3</i> mutation. Interestingly, in MALT lymphoma of the salivary gland, there was a significant positive association between <i>TBL1XR1</i> mutation and <i>GPR34</i> mutation/translocation (<i>P</i>=0.0002). In those of ocular adnexa, <i>TBL1XR1</i> mutation was mutually exclusive from <i>TNFAIP3</i> mutation (<i>P</i>=0.049), but significantly associated with IGHV3-23 usage (<i>P</i>=0.03) and <i>PIK3CD</i> mutation (<i>P</i>=0.009). These findings unravel novel insights into the molecular mechanisms of MALT lymphoma and provide further evidence for potential oncogenic co-operation between receptor signaling and genetic changes.
Power Oscillation Damping Using FACTS Devices: Modal Controllability, Observability in Local Signals, and Location of Transfer Function Zeros (2006)

Modal controllability, observability, and transfer function zeros play an important role in the selection of candidate locations and feedback signals for flexible ac transmission systems (FACTS)-based power swing damping controllers. This paper investigates location of zeros of the transfer function corresponding to FACTS devices and certain local feedback signals. Signals synthesized from locally measured signals are derived that can give good pole-zero separation. It is also shown that relative modal controllability of FACTS controllers at various locations can be directly inferred from relative modal observability in certain signals at those locations. These signals are identified for various FACTS devices. Case studies using detailed model are used to validate the results.
Prediction of Aqueous Solubility of Organic Compounds by Topological Descriptors (2003)

Abstract Two quantitative models for the prediction of aqueous solubility of 1293 organic compounds were generated by a Multilinear Regression (MLR) analysis, and a Backpropagation (BPG) neural network. The molecules were represented by 18 topological descriptors. The physicochemical relationship between solubility and the descriptors for different individual classes of monofunctional group compounds such as hydrocarbons, ethers, halocarbons, alcohols, aldehydes and ketones, acids, esters, and amines was investigated. The 1293 compounds were divided into a training set of 741 compounds and a test set of 552 compounds based on a Kohonen's self‐organizing neural network map. The models obtained show a good predictive power: for the test set, a correlation coefficient of 0.97 and a standard deviation of 0.52 were achieved by the backpropagation neural network approch.
Design and Characterization of $W$-Band SiGe RFICs for Passive Millimeter-Wave Imaging (2010)

This paper describes the design and measurement of a wideband (W-band) passive radiometer chip developed in a standard 0.12-¿m SiGe BiCMOS technology (IBM8HP, f <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">t</sub> /f <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">max</sub> = 200/265 GHz). Design equations, simulations, and measurements are presented for a 94-GHz square-law detector and wideband low noise amplifier, and an 80-110-GHz single-pole double-throw switch. A total-power radiometer is presented, which can achieve a temperature resolution of ¿ 0.69 K (30-ms integration time) with periodic calibration or chopping above 10 kHz. A switched Dicke radiometer chip is also presented, which addresses the 1/f noise of the total-power radiometer, and can achieve a temperature resolution of 0.83 K with a 30-ms integration time. This performance is comparable to current III-V imaging modules, and demonstrates, to our knowledge, the first implementation of a SiGe or CMOS <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">W</i> -band radiometer on a single chip.
Distillation, Azeotropic, and Extractive (2004)

Abstract Many industrial processes depend on efficient methods for separating azeotropic, close‐boiling, or other low relative volatility mixtures. Ordinary distillation is typically either uneconomical or impossible in these cases. However, by adding specially chosen separating agents, the separation can generally be accomplished. The principal distillation‐based techniques employed for separating such mixtures are discussed: extractive or homogeneous azeotropic distillation, where a completely miscible liquid separating agent is added to alter the relative volatilities; heterogeneous azeotropic distillation, where the agent, known as the entrainer, forms one or more azeotropes and causes immiscibility; distillation in the presence of ionic salts that alter the relative volatilities of the components; and pressure‐swing distillation, wherein some azeotropes can be circumvented using a series of columns operating at different pressures. Residue curve maps, material balance lines, and column sequences are given for several example systems. Methods for identifying feasible separating agents are also discussed.
Application of the radical pair mechanism to free radicals in organized systems: Can the effects of 60 Hz be predicted from studies under static fields? (1994)

The influence of 60-Hz magnetic fields on free radical reactions can be quantitatively predicted from the knowledge of the effect of static fields on free radical behavior. Studies of radical reactions in micellar systems show that the behavior under a 60-Hz field is identical to that under a static field at any given point in time.
Temperature Regulation in Laboratory Rodents (1993)

Rodents are the predominant experimental animals found in life-sciences research laboratories. The body temperature of a rodent is markedly affected by surgical, chemical or environmental manipulation. Because temperature regulation is controlled essentially by a 'holistic' regulatory system, meaning that its responses affect the activities of all other psychological and behavioural processes, it is clear that researchers working with rodents must be familiar with thermoregulatory physiology. With the help of extensive data tables and figures, this book explains the key facets of rodent thermal physiology, including neurological control and gender and intraspecies variations. There is a novel chapter on the effects of trauma, toxic chemicals and other factors. The book should therefore find use in government, academic or industrial laboratories whose researchers are working with rodents.
Generalized DFT-s-OFDM Waveforms Without Cyclic Prefix (2017)

This paper deals with generalized discrete Fourier transform-spread-orthogonal frequency division multiplexing (G-DFT-s-OFDM) waveforms, which replace the cyclic prefix of traditional OFDM/DFT-s-OFDM with an internal guard period. Such waveforms feature significant benefits in terms of flexibility, spectral containment, and low peak-to-average power ratio. Aspects related to reference sequence design and mapping for channel estimation are thoroughly addressed, and a new estimator for the specific zero-tail DFT-s-OFDM case is proposed. Furthermore, we address the opportunity of exploiting the internal guard period at each symbol for frequent channel state information updates, thus enabling the possibility of tracking rapidly varying propagation conditions.
More efficient repair of DNA double-strand breaks in skeletal muscle stem cells compared to their committed progeny (2014)

The loss of genome integrity in adult stem cells results in accelerated tissue aging and is possibly cancerogenic. Adult stem cells in different tissues appear to react robustly to DNA damage. We report that adult skeletal stem (satellite) cells do not primarily respond to radiation-induced DNA double-strand breaks (DSBs) via differentiation and exhibit less apoptosis compared to other myogenic cells. Satellite cells repair these DNA lesions more efficiently than their committed progeny. Importantly, non-proliferating satellite cells and post-mitotic nuclei in the fiber exhibit dramatically distinct repair efficiencies. Altogether, reduction of the repair capacity appears to be more a function of differentiation than of the proliferation status of the muscle cell. Notably, satellite cells retain a high efficiency of DSB repair also when isolated from the natural niche. Finally, we show that repair of DSB substrates is not only very efficient but, surprisingly, also very accurate in satellite cells and that accurate repair depends on the key non-homologous end-joining factor DNA-PKcs.
Feature vector classification by threshold for speaker identification. (2008)

This paper describes a new feature vector classification method for speaker identification. Purpose of this paper is constructing robust speaker models which only use meaningful feature vectors and discard confusing feature vectors. To construct robust speaker model, proposed method classifies feature vectors using log-likelihood estimation. Experimental results, with various segments ranging from 0.25 to 5 s, showed that our method outperforms previous method.
CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> Perovskite/Fullerene Planar‐Heterojunction Hybrid Solar Cells (2013)

All-solid-state donor/acceptor planar-heterojunction (PHJ) hybrid solar cells are constructed and their excellent performance measured. The deposition of a thin C60 fullerene or fullerene-derivative (acceptor) layer in vacuum on a CH3 NH3 PbI3 perovskite (donor) layer creates a hybrid PHJ that displays the photovoltaic effect. Such heterojunctions are shown to be suitable for the development of newly structured, hybrid, efficient solar cells.
IxTeT: an integrated approach for plan generation and scheduling (2002)

In a traditional approach to solve complex planning problems, plan generation and scheduling are addressed at two different steps of the resolution: plan generation answers the question "what to do?" and scheduling, the question "how to do it?". This paper describes a planning system, called IxTeT, that handles together and in an opportunistic way plan generation and scheduling, on the basis that the two questions are very much interdependent. Thanks to a rich formalism to represent time, resources, state of the world and changes, our planning system can address a large panel of realistic problems. The search relies on the resolution of flaws on the current plan: it is controlled by a least-commitment opportunistic strategy coupled with an original abstraction hierarchy. A heuristic search driven by a near-admissible algorithm ensures at the same time the global efficiency of the system and the good quality of the solution in terms of flexibility.