gebhart/patrepeval huggingface dataset:
Tuning Optical Conductivity of Large-Scale CVD Graphene by Strain Engineering (2013)

Strain engineering has been recently recognized as an effective way to tailor the electrical properties of graphene. In the optical domain, effects such as strain-induced anisotropic absorption add an appealing functionality to graphene, opening the prospect for atomically thin optical elements. Indeed, graphene is currently one of the notable players in the intense drive towards bendable, thin, and portable electronic displays, where its intrinsically metallic, optically transparent, and mechanically robust nature are major advantages. Given that the intrinsic transparency of a graphene monolayer is 97.7 %, any small, reproducible, controllable, and potentially reversible modulation of transparency can have a significant impact for graphene as a viable transparent conducting electrode. Even more so, if the degree of modulation is polarization dependent. Here we show that the transparency in the visible range of graphene pre-strained on a Polyethylene terephthalate (PET) substrate exhibits a periodic modulation (0.1 %) as a function of polarization direction, which we interpret as strain-induced optical anisotropy. The degree of anisotropy is varied by reversible external manipulation of the level of pre-strain. The magnitude of strain is monitored independently by optical absorption and Raman spectroscopy, and the experimental observations are consistent with the theoretically expected modification of the optical conductivity of graphene arising from the strain-induced changes in the electronic dispersion of graphene. The strain sensitivity of the optical response of graphene demonstrated in this study can be potentially utilized towards novel ultra-thin optical devices and strain sensing applications.
Ultra-Short-Pulse Lasers—Materials—Applications (2021)

We overview recent developments of 3D&plusmn; (additive/subtractive) manufacturing/printing from the point of view of laser development, beam delivery tools, applications, and materials. The average power of ultra-short-pulsed lasers has followed a Moore&rsquo;s scaling trajectory, doubling every two years, for the past 20 years. This requires fast beam scanning solutions and beam delivery control for larger-area applications. New material synthesis with high spatial resolution is provided at the high intensity TW/cm2-PW/cm2 exposure site. Net-shape manufacturing with a reduced number of post-processing steps is a practical trait of 3D&plusmn; printing. With computer numerical control (CNC) optimised using artificial intelligence (AI), the future of 3D&plusmn; manufacturing is discussed.
Polyvalvular Disease in a Fetus with Normal Chromosomes (2007)

Congenital polyvalvular disease is a spectrum of macroscopic and microscopic anomalies of the 4 valves of the heart. It is most commonly associated with chromosomal abnormalities, such as trisomy 13 and trisomy 18. Kowal-Vern et al. and Bartram et al. describe a total of 4 cases of congenital polyvalvular disease in patients with normal chromosomes by standard banding pattern analysis. Each of their patients, however, had associated extracardiac anomalies. Of the 8 previously reported cases of congenital polyvalvular disease with no extracardiac anomalies, chromosome analysis was not performed. We report a prenatally diagnosed case of polyvalvular disease with normal chromosomes and no extracardiac anomalies.
Three-phase fluidization of polydisperse beads (1984)

Three-phase fluidization of alumina beads of 0.5, 1.3 and 2 mm median diameters was studied with kerosene or heptane, and nitrogen, to determine the effect of polydispersity on bed stratification, bed expansion, bed contraction with gas flow and the sharpness of the bed interface. The ratio of limiting diameters of the beads varied from 1.4/1 to 8/1, encompassing a wide range of particle size distributions. An empirical model has been developed to describe the three phase fluidization of polydisperse beads. The model considers three-phase fluidization as a deviation from the two-phase, liquid solid fluidization an is described by Equations 8 (two-phase) and 9 (deviation) of the text. The model can be used for determining the height of the expanded bed in three-phase fluidization of beads. For polydisperse systems, bed contraction on introduction of gas in a liquid fluidized bed, appear to be due to the desegregation of the bed which is normally segregated in the absence of the gas phase.
Quantum structures from association schemes (2019)

Starting from an association scheme induced by a finite group and the corresponding Bose-Mesner algebra we construct quantum Markov chains (QMC), their entangled versions, and interacting Fock spaces (IFS) using the quantum probabilistic approach. Our constructions are based on the intersection numbers and their duals Krien parameters of the schemes with examples focused on regular (distance-regular and distance-transitive) graphs.
Diffusion-weighted MR imaging lesions after filter-protected stenting of high-grade symptomatic carotid artery stenoses. (2006)

New DWI lesions after filter-protected carotid stent placement are substantially more frequent in the ipsilateral ICA territory compared with other vascular territories. Therefore, intraluminal filters cannot completely protect the brain from procedure-related embolization. However, individual lesion load and the risk of clinically relevant ischemia is low.
Developing an Effective e-Learning Platform (2020)

Modern institutions, corporations, schools and universities in developed countries believe that e-Learning is a way for educating larger number of students in less time and lesser amount of resources. This research aims to design and develop a web-based e-learning system to make the environment of e-learning more adaptive and intelligent for the learners. The main values of the proposed research are accessibility and interoperability that make learning applications and components share data more easily and communicate more effectively. The proposed work was developed and designed using ASP.Net, SQL, XML and the Unified Modeling Language (UML) programming languages.
Reconfiguration of Multilevel Inverters and Their Impact on Insulation Breakdown Time (2023)

Reconfiguration of multilevel inverters (MLIs) has been widely used in motor drives to improve their reliability, make them fault tolerant and reduce the downtime. However, PWM-like inverter output has a large <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$dV/dt$</tex> and stresses the insulation systems in motor drives, thus leading to premature insulation failure. Reconfiguration of MLIs changes the number of voltage levels and <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$dV/dt$</tex> of the inverter output and subjects the insulation systems to a combination of different <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$dV/dt$</tex> during its operation. This effect on motor insulation is not yet fully known. Thus, it is important to understand the effect of reconfiguration of MLI, or the general impact of the MLI's number of levels, on insulation breakdown time. In this paper, magnet wire enamel insulation is stressed by an active neutral point clamped inverter (ANPC) that is reconfigurable for 3-, 5-, and 7-level outputs. The breakdown time of magnet wire enamel insulation is reported. This paper shows the experimental capability, details of the insulation material, methodology of testing and insulation breakdown time under different multilevel inverter configurations.
Transition metal silicides: fundamentals, preparation and catalytic applications (2019)

Transition metal silicides as low-cost and earth-abundant inorganic materials are becoming indispensable constituents in catalytic systems for a variety of applications and exhibit excellent properties for sustainable industrial process.
YBa/sub 2/Cu/sub 3/O/sub 7/(-δ) a-axis films and planar junctions (1995)

In order to prepare planar junctions, multilayers were sputtered, using YBa/sub 2/Cu/sub 3/O/sub 7-/spl delta// as superconductor and PrBa/sub 2/Cu/sub 3/O/sub 7/(-/spl delta/) as barrier material. The sandwiches are a-axis oriented. Out of these, single junctions were etched, planarized with CeO/sub 2/. Finally gold contacts were sputtered. The junctions are squares of size 20/spl times/20 to 100/spl times/100 /spl mu/m/sup 2/. A prerequisite for successful preparation of junctions from a-axis oriented multilayers is a study of such films. Films deposited by RF off-axis sputtering were characterized electrically, Their morphology was investigated by XRD, AFM and TEM. The films are very smooth and have a grain size of below 100/spl times/100 nm/sup 2/. To improve T/sub c/ and crystal quality, template layers were used. The T/sub c/ of a single film is about 62 K; by using a template layer up to 78 K can be reached. For a-axis oriented growth not only a reduction of the deposition temperature is important, but also the growth rate must be high enough. Best results were obtained at rates higher than 150 nm/h. The first planar junctions show a supercurrent, but otherwise rounded I-V curves.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
Mammalian Rad51C contributes to DNA cross-link resistance, sister chromatid cohesion and genomic stability (2002)

The eukaryotic Rad51 protein is a structural and functional homolog of Escherichia coli RecA with a role in DNA repair and genetic recombination. Five paralogs of Rad51 have been identified in vertebrates, Rad51B, Rad51C, Rad51D, Xrcc2 and Xrcc3, which are also implicated in recombination and genome stability. Here, we identify a mammalian cell mutant in Rad51C. We show that the Chinese hamster cell mutant, CL-V4B, has a defect in Rad51C. Sequencing of the hamster Rad51C cDNA revealed a 132 bp deletion corresponding to an alternatively spliced transcript with lack of exon 5. CL-V4B was hypersensitive to the interstrand cross-linking agents mitomycin C (MMC) and cisplatinum, the alkylating agent methyl methanesulfonate and the topoisomerase I inhibitor campthotecin and showed impaired Rad51 foci formation in response to DNA damage. The defect in Rad51C also resulted in an increase of spontaneous and MMC-induced chromosomal aberrations as well as a lack of induction of sister chromatid exchanges. However, centrosome formation was not affected. Intriguingly, a reduced level of sister chromatid cohesion was found in CL-V4B cells. These results reveal a role for Rad51C that is unique among the Rad51 paralogs.
Prognostic value of heparanase expression and cellular localization in oral cancer (2010)

Expression level and cellular localization of heparanase could serve as an important diagnostic marker in patients with oral cancer.
Relationship between two methods for calculating the least order of a transfer function matrix† (1972)

A simple relationship is shown to hold between two methods which have been suggested for obtaining the least order of a transfer function matrix without determination of a minimal realization
Emerging role of the tissue renin-angiotensin systems in congestive heart failure (1990)

Journal Article Emerging role of the tissue renin-angiotensin systems in congestive heart failure Get access V. J. Dzau, V. J. Dzau Molecular and Cellular Vascular Research Laboratory and Cardiovascular Physiology Laboratory, Division of Vascular Medicine and Atherosclerosis, Brigham and Women's Hospital and Harvard Medical SchoolBoston, U. S.A. Address for reprints : Victor J. Dzau, M.D. and Alan T. Hirsch, M.D., Division of Vascular Medicine and Atherosclerosis, Brigham and Women's Hospital, 75 Francis Street, Boston, MA 02115, U.S.A. Search for other works by this author on: Oxford Academic PubMed Google Scholar A. T. Hirsch A. T. Hirsch Molecular and Cellular Vascular Research Laboratory and Cardiovascular Physiology Laboratory, Division of Vascular Medicine and Atherosclerosis, Brigham and Women's Hospital and Harvard Medical SchoolBoston, U. S.A. Search for other works by this author on: Oxford Academic PubMed Google Scholar European Heart Journal, Volume 11, Issue suppl_B, January 1990, Pages 65–71, https://doi.org/10.1093/eurheartj/11.suppl_B.65 Published: 01 May 1990
Distributed Databases, Cooperative Processing, and Networking (1992)

This provides step-by-step methods for organizing and managing a distributed database system. Among the areas covered are: implementing a co-operative processing program within an IBM SAA environment; applications of distributed databases in service and manufacturing organizations; networking configurations and connectivity requirements for distributed databases; tactics for making trade-off between data integrity and synchronization in a distributed database environment; evaluating the strengths and weaknesses of database systems; establishing links between micros and mainframes; and implementing an effective client/server architecture. Atre is also author of Data Base: Structured Techniques for Design, Performance, and Management (published by McGraw-Hill).
A 100 MHz-1GHz on-chip-programmable phase-locked loop (2004)

A programmable wide-range PLL has been designed in the digital subset of TSMC 3.3V, 0.25/spl mu/ technology that can provide 100-MHz to 1-GHz rail-to-rail digital clock signal from a 50-MHz reference clock. The architecture is appropriate for low-power design. The system is robust against temperature changes so that the stability of the system is guaranteed. Because of the differential configuration of the sub-blocks and using a voltage-controlled oscillator with a low gain and a linear transfer function the system has an acceptable noise rejection.
Cell‐mediated reaction against tumors induced by oncornaviruses. I. Kinetics and specificity of the immune response in Murine sarcoma virus (MSV)‐induced tumors and transplanted lymphomas (1972)

Abstract Anti‐tumour cell‐mediated immune reactions were studied by the chromium release test (CRT) in mice bearing autochtonous Murine Sarcoma Virus (MSV)‐induced sarcomas or syngeneic transplants of lymphomas with various antigenic specificities. Cytotoxic lymphoid cells were detected during tumor growth, but disappeared rapidly after day 13–15 in “progressors”, and more slowly in mice which were able to reject the tumor (“regressors”). The level of cytolytic activity of lymphoid cells in the spleen of “regressors” did not parallel the immune protection. No blocking of the cytotoxic activity of lymphoid cells was detected in CRT using either “progressor”, or “regressor” sera. The discrepancies which exist between these results and those which were obtained in the same tumor system by colony inhibition test or microcytotoxicity assay may suggest that different phenomena, possibly involving different lymphoid cell populations, were studied by the various methods. The antigenic specificity of the immune reactions which were evidenced by the CRT was not identical to those revealed by serological methods, cross‐reactivity being regularly observed in CRT between FMRGi+ and G+lymphomas.
Design of an active–passive device for human ankle movement during functional magnetic resonance imaging analysis (2011)

Functional magnetic resonance imaging analysis has made major strides in recent years, both because of the development of new scanners and owing to magnetic resonance compatible systems that make it possible to stimulate parts of the human body during analysis. The significant gains in our knowledge of the brain that can thus be achieved justify efforts to construct machines with control circuits suitable for this purpose. This paper presents a magnetic resonance compatible mechatronic device with electropneumatic control that can be used to move one or both feet during functional magnetic resonance imaging analysis of the cerebral motor zones. The system is innovative and original. The results obtained at the end of the investigation were good, and demonstrated that the design is feasible.
Efficiency Optimization Strategy of Three Port Triple Active Bridge DC-DC Converter (2019)

Multiport dc-dc converter has attracted increasing research interest in ac/dc hybrid grid and vehicle systems due to the advantages of flexibility, low-cost and high-efficiency. However, under the conventional phase-shifting control strategy, mismatching of dc-port voltages may increase the current in transformer and switching devices, which reduce efficiency of multiport dc-dc converter. To solve the problem, a phase-shifting PWM strategy to control the power flow and minimize the losses of the isolated three port triple active bridge(TAB) dc-dc converter is proposed in this paper, in which phase-shifting control is used for managing the power flow between triple ports, duty cycle control is utilized for optimizing the system losses and ZVS conditions are checked. Finally, the simulation is conducted to validate the feasibility of the strategy.
Phase-transition thresholds and vaporization phenomena for ultrasound phase-change nanoemulsions assessed via high-speed optical microscopy (2013)

Ultrasonically activated phase-change contrast agents (PCCAs) based on perfluorocarbon droplets have been proposed for a variety of therapeutic and diagnostic clinical applications. When generated at the nanoscale, droplets may be small enough to exit the vascular space and then be induced to vaporize with high spatial and temporal specificity by externally-applied ultrasound. The use of acoustical techniques for optimizing ultrasound parameters for given applications can be a significant challenge for nanoscale PCCAs due to the contributions of larger outlier droplets. Similarly, optical techniques can be a challenge due to the sub-micron size of nanodroplet agents and resolution limits of optical microscopy. In this study, an optical method for determining activation thresholds of nanoscale emulsions based on the in vitro distribution of bubbles resulting from vaporization of PCCAs after single, short (<10 cycles) ultrasound pulses is evaluated. Through ultra-high-speed microscopy it is shown that the bubbles produced early in the pulse from vaporized droplets are strongly affected by subsequent cycles of the vaporization pulse, and these effects increase with pulse length. Results show that decafluorobutane nanoemulsions with peak diameters on the order of 200 nm can be optimally vaporized with short pulses using pressures amenable to clinical diagnostic ultrasound machines.
Assessment of female and male fertility in Sprague–Dawley rats administered vorinostat, a histone deacetylase inhibitor (2007)

Vorinostat had no effects on mating or fertility in rats up to 150 mg/kg/day. There were no indications of reproductive toxicity in drug-treated male rats. Increases in corpora lutea or resorptions were observed in treated female rats.
Kinematic Analysis of Five Different Anterior Cruciate Ligament Reconstruction Techniques (2015)

Several anatomical anterior cruciate ligament (ACL) reconstruction techniques have been proposed to restore normal joint kinematics. However, the relative superiorities of these techniques with one another and traditional single-bundle reconstructions are unclear. Kinematic responses of five previously reported reconstruction techniques (single-bundle reconstruction using a bone-patellar tendon-bone graft [SBR-BPTB], single-bundle reconstruction using a hamstring tendon graft [SBR-HST], single-tunnel double-bundle reconstruction using a hamstring tendon graft [STDBR-HST], anatomical single-tunnel reconstruction using a hamstring tendon graft [ASTR-HST], and a double-tunnel double-bundle reconstruction using a hamstring tendon graft [DBR-HST]) were systematically analyzed. The knee kinematics were determined under anterior tibial load (134 N) and simulated quadriceps load (400 N) at 0°, 15°, 30°, 60°, and 90° of flexion using a robotic testing system. Anterior joint stability under anterior tibial load was qualified as normal for ASTR-HST and DBR-HST and nearly normal for SBR-BPTB, SBR-HST, and STDBR-HST as per the International Knee Documentation Committee knee examination form categorization. The analysis of this study also demonstrated that SBR-BPTB, STDBR-HST, ASTR-HST, and DBR-HST restored the anterior joint stability to normal condition while the SBR-HST resulted in a nearly normal anterior joint stability under the action of simulated quadriceps load. The medial-lateral translations were restored to normal level by all the reconstructions. The internal tibial rotations under the simulated muscle load were over-constrained by all the reconstruction techniques, and more so by the DBR-HST. All five ACL reconstruction techniques could provide either normal or nearly normal anterior joint stability; however, the techniques over-constrained internal tibial rotation under the simulated quadriceps load.
Identification of a Chlamydia trachomatis Serovar E Urogenital Isolate Which Lacks the Cryptic Plasmid (1998)

Our laboratory recently recovered Chlamydia trachomatis in tissue culture from a urogenital specimen which tested negative by commercial plasmid-based PCR. Immunotyping and omp1 sequencing identified the isolate as a serovar E isolate. Further investigation by PCR and Southern hybridization indicated that this isolate lacks the chlamydial cryptic plasmid.
Inhibition of Cell Wall-Associated Enzymes in Vitro and in Vivo with Sugar Analogs (1990)

Sugar analogs were used to study the inhibition of cell wall-associated glycosidases in vitro and in vivo. For in vitro characterization, cell walls were highly purified from corn (Zea mays L.) root cortical cells and methods were developed to assay enzyme activity in situ. Inhibitor dependence curves, mode of inhibition, and specificity were determined for three sugar analogs. At low concentrations of castanospermine (CAS), 2-acetamido-1,5-imino-1,2,5-trideoxy-d-glucitol, and swainsonine, these inhibitors showed competitive inhibition kinetics with beta-glucosidase, beta-GIcNAcase, and alpha-mannosidase, respectively. Swainsonine specifically inhibited alpha-mannosidase activity, and 2-acetamido-1,5-imino-1,2,5-trideoxy-d-glucitol specifically inhibited beta-N-acetyl-hexosamindase activity. However, CAS inhibited a broad spectrum of cell wall-associated enzymes. When the sugar analogs were applied to 2 day old corn seedlings, only CAS caused considerable changes in root growth and development. To ensure that the concentration of inhibitors used in vitro also inhibited enzyme activity in vivo, an in vivo method for measuring cell wall-associated activity was devised.