gebhart/patrepeval huggingface dataset:
Arginine Catabolism by Sourdough Lactic Acid Bacteria: Purification and Characterization of the Arginine Deiminase Pathway Enzymes from <i>Lactobacillus sanfranciscensis</i> CB1 (2002)

The cytoplasmic extracts of 70 strains of the most frequently isolated sourdough lactic acid bacteria were screened initially for arginine deiminase (ADI), ornithine transcarbamoylase (OTC), and carbamate kinase (CK) activities, which comprise the ADI (or arginine dihydrolase) pathway. Only obligately heterofermentative strains such as Lactobacillus sanfranciscensis CB1; Lactobacillus brevis AM1, AM8, and 10A; Lactobacillus hilgardii 51B; and Lactobacillus fructivorans DD3 and DA106 showed all three enzyme activities. Lactobacillus plantarum B14 did not show CK activity. L. sanfranciscensis CB1 showed the highest activities, and the three enzymes were purified from this microorganism to homogeneity by several chromatographic steps. ADI, OTC, and CK had apparent molecular masses of ca. 46, 39, and 37 kDa, respectively, and the pIs were in the range of 5.07 to 5.2. The OTCs, CKs, and especially ADIs were well adapted to pH (acidic, pH 3.5 to 4.5) and temperature (30 to 37 degrees C) conditions which are usually found during sourdough fermentation. Internal peptide sequences of the three enzymes had the highest level of homology with ADI, OTC, and CK of Lactobacillus sakei. L. sanfranciscensis CB1 expressed the ADI pathway either on MAM broth containing 17 mM arginine or during sourdough fermentation with 1 to 43 mM added arginine. Two-dimensional electrophoresis showed that ADI, OTC, and CK were induced by factors of ca. 10, 4, and 2 in the whole-cell extract of cells grown in MAM broth containing 17 mM arginine compared to cells cultivated without arginine. Arginine catabolism in L. sanfranciscensis CB1 depended on the presence of a carbon source and arginine; glucose at up to ca. 54 mM did not exert an inhibitory effect, and the pH was not relevant for induction. The pH of sourdoughs fermented by L. sanfranciscensis CB1 was dependent on the amount of arginine added to the dough. A low supply of arginine (6 mM) during sourdough fermentation by L. sanfranciscensis CB1 enhanced cell growth, cell survival during storage at 7 degrees C, and tolerance to acid environmental stress and favored the production of ornithine, which is an important precursor of crust aroma compounds.
A Helium Cooled Li<sub>2</sub>O Straight Tube Blanket Design for Cylindrical Geometry (2001)

A tritium-breeding blanket design is investigated for a D-T Field-Reversed Configuration (FRC) scoping study. The thrust of our initial effort on the blanket has been to seek solutions as close to present-day technology as possible, and we have therefore focused on steel structure with helium coolant. The simple FRC cylindrical geometry has allowed us reasonable success due to the low FRC magnetic field and relatively easy maintenance. In this design the breeder is Li2O tubes. The design is modular with 10 modules each 2.5 m long. The inner radius of the first wall is 2.0 m and the FW/blanket/shield thickness is about 2 m. The surface heat flux will be radiation dominated, fairly uniform, and relatively low, because most of the charged particles follow the magnetic flux tubes to the end walls. The neutron wall loading is 5 MW/m2. In this design the surface heat flux equals 0.19 MW/m2. The maximum Li2O tube temperature is 1003°C. The helium exit temperature from the heat exchanger is about 800°C which allows a thermal efficiency of about 52%. The local tritium breeding ratio (TBR) equals 1.1 and is sufficient because in the FRC geometry the plasma has nearly full coverage. The helium pumping power is 1 MW. The coolant routing is optimized to limit the steel maximum temperature to 635°C. The same concept would be applicable to a spherical torus and spheromak.
Shape-Memory Polymers for Microelectromechanical Systems (2004)

This paper investigates the use of shape-memory polymer thin films in microelectromechanical systems (MEMS). shape-memory polymers possess the capacity to recover large-strain deformations by the application of heat and are candidates for small-scale transduction. The key advantages of shape-memory polymers are their low material/fabrication cost coupled with their simplicity of integration/operation. In the present study, shape-memory polymers are spin coated onto a standard Si wafer and polymerized by thermal annealing. The thermomechanics of strain storage and recovery in the polymer films are studied using instrumented microindentation. The sharp microindents demonstrate full recovery at all load levels, establishing the feasibility of microscale actuation. The microindentation response of the polymer film is shown to depend on temperature and the cooling cycle during indentation. In turn, the subsequent recovery behavior of an indent depends on the thermal history during indentation. Indents performed at higher temperatures are larger in size, but have smaller stored strain energy compared to indents performed at low temperature. The larger stored strain energy in low temperature indents results in lower shape recovery temperatures. The effects of indentation temperature and load are systematically investigated to provide a framework for the use of shape-memory polymers in microsystems. Application of shape-memory polymers is demonstrated through the development of an active microfluidic reservoir. The reservoir was created by indentation at the end of a microfluidic channel and was activated by local heating. The collapse of the filled reservoir caused the motion of fluid down the microfluidic channel.
TEMPORAL EVOLUTION OF BEAM EMITTANCE AND CATHODE PLASMA UNIFORMITY FROM A FIELD EMISSION DIODE (1987)

Thr temporal evolution of the beam emlttance from a multi- &~~trodz field rnli&a drctron gun (1.3 MV, 0 5 kA, 30 ns) has hem mea- surrd n tth nanosecond time resolution, using a novel Cerenkov-dectrooptic dlagost,c In addition, WC report experimental studies of the cathod? plasma umiformlt,y from a field rmission dmdr (250 kV, 2 kA. 100 ns) The obwrvatic~r~s from both systems show that diodes provided with wlvet- hackrd cathodes behavr differzntfy, and are superior to, the more conven- t~c~nal graphite cathodes.
Incorrect Triple Detection Using Knowledge Base Embedding and Relation Model (2019)

최근 인터넷의 발전으로 정보의 양이 늘어나면서 대용량 지식베이스를 이용한 연구에 관심이 많아지는 추세이다. 또한 지식베이스가 다양한 연구에 많이 활용됨에 따라 지식베이스를 완성하는 연구가 진행되고 있다. 하지만 지식베이스 내 오류 트리플을 검출하는 연구가 부족하다. 본 논문에서는 지식베이스 내의 오류 트리플을 검출하기 위해 임베딩 알고리즘을 사용하여 임베딩을 진행한 뒤 클러스터링 한 임베딩 모델과, 트리플 분류의 대표적인 알고리즘인 4가지의 릴레이션 모델을 활용하는 것을 제안한다. 또한, 싱글 임베딩 모델들의 결과를 사용한 임베딩 앙상블 모델과 싱글 릴레이션 모델들의 결과를 사용한 릴레이션 앙상블 모델을 생성하여 모델 검증 지표를 통해 오류 트리플 검출 결과를 비교 측정하였다.
Evolving Telematics Systems and Standards (2000)

<div class="htmlview paragraph">A Telematics System is an end-to-end system that delivers personal communications, safety and security, entertainment and information services to a vehicle with a location specific context. Typical service examples include Emergency Call, Roadside Assistance, Fleet Management, Yellow Pages and Real-time Vehicle Diagnostics.</div> <div class="htmlview paragraph">Telematics has wide ranging benefits for a number of different industry participants. For a telecommunications operator, Telematics may provide the necessary paradigm shift to grow the wireless data market whilst leveraging existing infrastructure. For vehicle manufacturers, it offers the opportunity to obtain an ongoing revenue stream while enhancing both standard and after-market product lines. For regulators, there is a progression towards intelligent transportation systems and their associated benefits of pollution reduction, reduced transit times, and reduced road fatalities. For emergency (including paramedic, police and fire brigades), there is improved locating information and response times. Finally, for consumers there should be an effective service price reduction via economies of scope, and the less quantifiable benefits associated with access to safety and security services.</div> <div class="htmlview paragraph">Motorola, in partnership with telecommunications carriers and vehicle manufacturers has been an active participant in the development of Telematics systems such as OnStar™, Integrated Mayday™, TeleAid™ and Rescue™, and in the development of wireless protocols such as MEMS and ACP. However, with an increase in the technical capability of vehicle-based processors, communications networks, and display devices, there is an opportunity to progress from these older proprietary systems to open evolving systems and standards. This progression would then contribute to ensuring sustained market growth, building upon the increasing market acceptance and visibility for Telematics products.</div> <div class="htmlview paragraph">This paper summarizes the research and development undertaken by the Telematics Communications Group of Motorola in the area of Telematics systems and standards. The paper compares and contrasts a number of existing standards (ACP, MEMS, WAP-T and GATS) in terms of their capability to support a suite of services, and their evolution toward an open standard. In addition, the paper discusses the development of a simulation and prototype framework to allow an investigation of the various protocol options and provide performance comparisons. The paper then concludes with a series of recommendations for further research and development.</div>
A Sub-Spectrum Suppressed Transmission Scheme for Highly Efficient Satellite Communications (2011)

In this paper, we propose a sub-spectrum suppressed transmission scheme for a single carrier modulation signal to increase the frequency utilization efficiency of satellite communication systems. A single-carrier modulated signal is directly divided into sub-spectra using a filter bank, and one of the sub-spectra is suppressed at the transmitter in order to reduce the total occupied bandwidth. We also propose an iterative equalization process using a sub-spectrum replica to improve the degradation due to inter-symbol interference caused by sub-spectrum suppression. By computer simulations, we show the reception performance improvement and the increase of the frequency utilization efficiency.
Prognostic Significance of Overexpression of EZH2 and H3k27me3 Proteins in Gastric Cancer (2012)

The enhancer of zeste homolog 2 (EZH2) methyl transferase and histone 3 lysine 27 (H3K27me3) protein can repress gene transcription, and their aberrant expression has been observed in various human cancers. This study determined their expression levels in gastric cancer tissues with reference to clinicopathological features and patient survival. We collected 117 gastric cancer and corresponding normal tissues for immunohistochemistry analysis. In gastric cancers, 82/117 (70.1%) were positive for EZH2 and 66/117 (56.4%) for H3K27me3 proteins in contrast to only 5.41% and 7.25% of normal gastric mucosa specimens, respectively. Kaplan-Meier survival data showed the average overall and disease-free survival of EZH2 high expression patients was 25.2 and 20.2 months, respectively, shorter than that with EZH2 low expression (40.5 and 35.9 months). The average overall survival and disease-free survival of high H3K27me3 expression patients was 23.4 and 17.4 months, shorter than without H3K27me3 expression (37.6 and 34.5 months). The average overall survival and disease-free survival of patients with both EZH2 and H3K27me3 expression was 18.8 and 12.9 months, respectively, shorter than that with either alone (34.7 and 31.2 months) or with low levels of both (43.9 and 39.9 months). Multivariate Cox regression analysis showed that H3K27me3 and EZH2 expression, tumor size differentiation and clinical stage were all independent prognostic factors for predicting patient survival. This study demonstrated that detection of both EZH2 and H3K27me3 proteins can predict poor survival of gastric cancer patients, superior to single protein detection. In addition, H3K27me3 and EZH2 protein expression could predict lymph node metastasis.
A Template-Induced <i>Incipient</i> Collagen-Like Triple-Helical Structure (1996)

ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTA Template-Induced Incipient Collagen-Like Triple-Helical StructureMurray Goodman, Yangbo Feng, Giuseppe Melacini, and Joseph P. TaulaneView Author Information Department of Chemistry & Biochemistry University of California, San Diego La Jolla, California 92093-0343Cite this: J. Am. Chem. Soc. 1996, 118, 21, 5156–5157Publication Date (Web):May 29, 1996Publication History Received8 December 1995Published online29 May 1996Published inissue 1 January 1996https://pubs.acs.org/doi/10.1021/ja954132hhttps://doi.org/10.1021/ja954132hrapid-communicationACS PublicationsCopyright © 1996 American Chemical SocietyRequest reuse permissionsArticle Views561Altmetric-Citations80LEARN 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 SUBJECTS:Chemical structure,Genetics,Melting,Peptides and proteins,Resonance structures Get e-Alerts
The analysis and design of CMOS multidrain logic and stacked multidrain logic (1987)

A CMOS logic circuit called the CMOS multidrain logic (MDL) is proposed, analyzed, and experimentally observed. The basic circuit structure, which is derived from integrated injection logic, consists of an enhancement-mode MOSFET as a current injector and a multidrain MOSFET with drain terminals as output nodes and the gate terminal as input node. As compared with the multidrain NMOS logic, the difference is that an enhancement MOS instead of a depletion NMOS is used as a current injector.
An Iterative Algorithm for Finding Point Correspondences (2008)

This paper presents a solution to a general correspondence problem between a set of points (or image features) and a template, where the matching criterion includes linear parameters which reflect dynamic camera zooming during image-based tracking procedures. An algorithm is proposed which will solve this type of correspondence problem. Unlike most existing algorithms, which approach the solution using relaxation and mathematical programming, the proposed algorithm searches for the solution by iteratively interchanging the position of feature-pairs within the feature set until a necessary condition is satisfied. This being, if the interchange of two features from the feature set degrades the matching criterion. Three sets of correspondence examples are detailed which illustrate the effectiveness and efficiency of the proposed correspondence technique in solving cases, or image data, which are affected by large translation and scaling. A standard technique, the Scott and Longuet-Higgins method, taken from literature is also tested as a comparison.
GNA33 of <i>Neisseria meningitidis</i> Is a Lipoprotein Required for Cell Separation, Membrane Architecture, and Virulence (2004)

GNA33 is a membrane-bound lipoprotein with murein hydrolase activity that is present in all Neisseria species and well conserved in different meningococcal isolates. The protein shows 33% identity to a lytic transglycolase (MltA) from Escherichia coli and has been shown to be involved in the degradation of both insoluble murein sacculi and unsubstituted glycan strands. To study the function of the gene and its role in pathogenesis and virulence, a knockout mutant of a Neisseria meningitidis serogroup B strain was generated. The mutant exhibited retarded growth in vitro. Transmission electron microscopy revealed that the mutant grows in clusters which are connected by a continuous outer membrane, suggesting a failure in the separation of daughter cells. Moreover, sodium dodecyl sulfate-polyacrylamide gel electrophoresis analysis of culture supernatant revealed that the mutant releases several proteins in the medium. The five most abundant proteins, identified by matrix-assisted laser desorption ionization-time-of-flight mass spectrometry analysis, belong to the outer membrane protein family. Finally, the mutant showed an attenuated phenotype, since it was not able to cause bacteremia in the infant rat model. We conclude that GNA33 is a highly conserved lipoprotein which plays an important role in peptidoglycan metabolism, cell separation, membrane architecture, and virulence.
A CROSS‐NATIONAL COMPARISON OF EMPLOYEE PARTICIPATION:INSIGHTS FOR AMERICAN MANAGEMENT (1993)

Three manufacturing facilities of an international consumer products company were studied to determine cross‐cultural differences in how managers address employee participation. Despite nearly identical products, a common company culture, and other similarities, European managers demonstrated a very different perspective on employee participation than American managers. Implications for American managers are developed from these contrasts.
SAM: a flexible and secure auction architecture using trusted hardware (2005)

Increasing numbers of economic transactions are conducted through on-line auctions. Nevertheless, most current auction implementations fail to address important security concerns. In particular, most auction systems force buyers and sellers to trust the auctioneer; alternative secure systems are inflexible and have a high computational and/or communication overhead. To overcome these limitations, we propose a secure auction marketplace (SAM) architecture, based on the recently available tool of high-performance, programmable secure coprocessors. Unlike previous schemes, this approach provides a general framework that can incorporate arbitrary auction schemes by using different evaluation programs, as well as provide complex security properties by using the secure coprocessor and our auction protocols. Our approach features strong security guarantees for the buyers and sellers without trusting the auctioneer, precise definition of the information disclosed during and after the auction, and high flexibility to adapt to new types of auctions. Keywords: Secure auction architecture, secure coprocessor.
Photodamage: cause, clinical manifestations, and prevention. (1993)

It is now recognized that intrinsic aging changes are distinct from those caused by habitual exposure to the sun (photoaging). Not only are these sun-induced alterations unsightly, but they also serve as a marker for patients at risk for developing skin cancer. Because of increased leisure time and affluence in our society, and an emphasis on sunbathing and other outdoor recreational activities during the last few decades, photoaging and skin cancer are becoming an ever-increasing problem and source of concern for health care professionals. The purpose of this article is to review the cause, clinical manifestations, and implications of photodamage. Photoprotection and other preventive measures to minimize photoaging and the risk of skin cancer will be discussed.
Antigenic differences between alveolar and peritoneal macrophages of the rat. Lack of population-specific determinants. (1979)

Antisera produced in rabbits against adherent cells of rat alveolar or peritoneal lavage fluid (anti-rat alveolar macrophage sera, ARAMS, or anti-rat peritoneal macrophage sera, ARPMS) were used to detect antigenic differences between alveolar (AM) and peritoneal (PM) macrophages in an indirect membrane immunofluorescence (IMF) test. Of all sera tested, the IMF titres were higher with cells of that population which was used for immunization. These differences were found before and after exhaustive absorptions with insolubilized rat plasma, rat erythrocytes, and non-adherent rat kidney, spleen, thymus and bone marrow cells. The differences were not due to antigens specific for one of the macrophage populations, as demonstrated by cross-adsorption studies with macrophages of different localization. It is assumed that two or more macrophage specific antigenic determinants are present in different density in the two macrophage populations.
Low-temperature Conversion of Carbon Dioxide to Methane in an Electric Field (2020)

CO2 methanation was conducted at low temperatures with an electric field. Results show that 5 wt %Ru/CeO2 catalyst exhibited high and stable catalytic activity for CO2 methanation with the electric field. The kinetic investigations and in-situ DRIFTS measurements revealed that Ru/CeO2 catalyst promoted CO2 methanation and Ru at the Ru–CeO2 interface (low-coordinated Ru sites) contributes to the reverse water gas shift reaction at low temperatures in the electric field. Hydrogenation of CO2 to CH4 proceeds over Ru/CeO2 catalyst in an electric field even at low temperatures below 473 K, where conventional catalytic reaction without the electric field does not proceed. In the electric field, Ru/CeO2 catalyst exhibits high and stable activity without the hindrance of CO adsorbed on the Ru particle surface.
Reactive sputtering of copper and silicon near the sputtering threshold (1985)

We have investigated reactive sputtering of copper and silicon by oxygen in the ion energy regime near the sputtering threshold, using low-energy ion-beam and quartz-crystal microbalance techniques. Surface oxidation is observed to increase the ion energy threshold for copper sputtering, and oxide film growth by low-energy ion bombardment of copper and silicon is characterized. It is demonstrated that oxidation of copper is primarily by oxygen ion bombardment, while silicon exhibits greater reactivity to neutral oxygen molecules. Copper oxide layers as much as 150 Å thick can be formed at ion energy below the copper sputter threshold at room temperature. No evidence for selective formation of CuO or Cu2O was observed over the range of conditions investigated.
Effect of Milling Depth of the Junction Pattern on Magnetic Properties and Yields in Magnetic Tunnel Junctions (2002)

We fabricated magnetic tunnel junctions of Ta (3 nm)/Ni81Fe19(2)/Fe50Mn50(10)/Co90Fe10(6)/Al(2.2)-oxide/Ni81Fe19(5)/Ta(5) with two different structures, the "just-etched junction" and the "over-etched junction", using a secondary ion mass spectroscopy apparatus during the milling process of a junction pattern: the milling was stopped at the Al-oxide barrier layer in the former case and at either the CoFe or the FeMn layers in the latter. For the "over-etched junction", both the demagnetization field of the pinned layer and magnetostatic coupling between the pinned and free layers increased with increasing milling depth of the junction pattern. The yield for a sampling of 48 junctions was much higher in the case of the "just-etched junction" than in that of the "over-etched junction".
Effects of Microwave Oven Treatment on Microorganisms in Soil (1984)

Recherche des effets des conditions de traitement (duree, quantite de sol, humidite, type de sol) sur l'elimination des microorganismes. Effets particuliers sur Pythium, Fusarium, Heterodera, Rhizoctonia, champignons mycorhiziens. Comparaison avec l'autoclavage et les fumigants