gebhart/patrepeval huggingface dataset:
In situ X‐ray Diffraction Investigation of Hydrogen Storage Alloys During Charge and Discharge (2016)

Abstract Abstract. Metal hydride electrodes have shown to be useful both in secondary batteries, e.g. the Ni/metal hydride system, and more recently in fuel cells, especially for direct borohydride fuel cells. This work provides in situ X‐ray diffraction (XRD) results aiming at characterizing the phase transitions of the LaNi 4.7 Sn 0.2 Cu 0.1 metal hydride alloy with and without Pt in the particle surface when charged electrochemically and chemically by exposition to a borohydride solution. Results have shown that the method of alloy charging leads to different phase predominance and different site occupancies, but both methods lead to almost the same discharge capacity. In the electrolysis process, γ‐β phase transitions are predominant during the charge/discharge, while in the chemical charging by exposure to a borohydride solution the α‐γ phase transition is more important, indicating occurrence of smaller localized stress in the alloy, with benefit on the material lifetime. Essentially the same phenomena were observed for the alloy with Pt, either with respect to the alloy structure and the electrochemical characteristics.
Display of the HIV envelope protein at the yeast cell surface for immunogen development (2018)

As a step toward the development of variant forms of Env with enhanced immunogenic properties, we have expressed the glycoprotein in the yeast surface display system in a form that can be subjected to random mutagenesis followed by screening for forms with enhanced binding to germline antibodies. To optimize the expression and immunogenicity of the yeast-displayed Env protein, we tested different approaches for cell wall anchoring, expression of gp120 and gp140 Env from different viral strains, the effects of introducing mutations designed to stabilize Env, and the effects of procedures for altering N-linked glycosylation of Env. We find that diverse forms of HIV envelope glycoprotein can be efficiently expressed at the yeast cell surface and that gp140 forms of Env are effectively cleaved by Kex2p, the yeast furin protease homolog. Multiple yeast-displayed gp120 and gp140 proteins are capable of binding to antibodies directed against the V3-variable loop, CD4 binding site, and gp41 membrane-proximal regions, including some antibodies whose binding is known to depend on Env conformation and N-linked glycan. Based on antibody recognition and sensitivity to glycosidases, yeast glycosylation patterns partially mimic high mannose-type N-glycosylation in mammalian cells. However, yeast-displayed Env is not recognized by some anti-Env antibodies sensitive to quaternary structure, suggesting either that the displayed protein exists in a monomeric state or that for these antibodies, yeast glycosylation in certain regions hinders recognition or access. Consistent with studies in other systems, reconstructed predicted unmutated precursors to anti-Env antibodies exhibit little affinity for the yeast-displayed envelope protein.
Ultrafast selective transport of alkali metal ions in metal organic frameworks with subnanometer pores (2018)

Porous membranes with ultrafast ion permeation and high ion selectivity are highly desirable for efficient mineral separation, water purification, and energy conversion, but it is still a huge challenge to efficiently separate monatomic ions of the same valence and similar sizes using synthetic membranes. We report metal organic framework (MOF) membranes, including ZIF-8 and UiO-66 membranes with uniform subnanometer pores consisting of angstrom-sized windows and nanometer-sized cavities for ultrafast selective transport of alkali metal ions. The angstrom-sized windows acted as ion selectivity filters for selection of alkali metal ions, whereas the nanometer-sized cavities functioned as ion conductive pores for ultrafast ion transport. The ZIF-8 and UiO-66 membranes showed a LiCl/RbCl selectivity of ~4.6 and ~1.8, respectively, which are much greater than the LiCl/RbCl selectivity of 0.6 to 0.8 measured in traditional porous membranes. Molecular dynamics simulations suggested that ultrafast and selective ion transport in ZIF-8 was associated with partial dehydration effects. This study reveals ultrafast and selective transport of monovalent ions in subnanometer MOF pores and opens up a new avenue to develop unique MOF platforms for efficient ion separations in the future.
New synthetic pathways to the preparation of near-blue emitting heteroleptic Ir(iii)N6 coordinated compounds with microsecond lifetimes (2014)

A high yield synthetic route for the preparation of N6 coordinated heteroleptic Ir(III) complexes using bidentate polypyridyl type ligands is described. The complexes are near-blue emitters and show microsecond emission lifetimes, high emission quantum yields and have two quasi-reversible reduction processes between -1.0 and -1.3 V vs. Ag/AgCl.
CD83 Is a Sialic Acid-Binding Ig-Like Lectin (Siglec) Adhesion Receptor that Binds Monocytes and a Subset of Activated CD8+ T Cells (2001)

To help determine CD83 function, a cDNA encoding a soluble protein containing the CD83 extracellular domain was fused with a mutated human IgG1 constant region (CD83Ig) and expressed by stable transfection of Chinese hamster ovary cells. Purified CD83Ig bound to peripheral blood monocytes and a subset of activated CD3(+)CD8(+) lymphocytes but did not bind to FcR. Monocytes that had adhered to plastic lost their ability to bind to CD83Ig after 90 min of in vitro incubation. CD83Ig bound to two of five T cell lines tested, HPB-ALL and Jurkat. The binding to HPB-ALL cells significantly increased when they were grown at a low pH (pH 6.5), whereas binding to Jurkat cells increased after apoptosis was induced with anti-Fas mAb. B cell and monocytic lines did not bind CD83Ig and neither did CD56(+) NK cells or granulocytes. Full-length CD83 expressed by a transfected carcinoma line mediated CD83-dependent adhesion to HPB-ALL cells. CD83Ig immunoprecipitated and immunoblotted a 72-kDa protein from HPB-ALL cells. Binding of CD83Ig to HPB-ALL cells was eliminated by neuraminidase treatment of the cells. We conclude that CD83 is an adhesion receptor with a counterreceptor expressed on monocytes and a subset of activated or stressed T lymphocytes, and that interaction between CD83 and its counterreceptor is dependent upon the state of glycosylation of a 72-kDa counterreceptor by sialic acid residues. In view of the selectivity of the expression of CD83 and its ligand, we postulate that the interaction between the two plays an important role in the induction and regulation of immune responses.
Endoscopic Radial Artery Harvesting for U-Clip EC-IC Bypass in the Treatment of a Giant Petrous Internal Carotid Artery Aneurysm: Technical Case Report (2009)

Endoscopic technique provides improved patient satisfaction, especially in terms of length of the surgical incision, when compared to the conventional approach. Combined with the innovative use of U-clips, this case illustrates how new technologies can simplify ECA-ICA bypass surgery while yielding a better cosmetic and functional outcome.
Selective hydrogenation of fluorinated arenes using rhodium nanoparticles on molecularly modified silica (2020)

Rh nanoparticles prepared on hydrophobic molecularly modified silica act as effective catalysts for the hydrogenation of fluoroarenes to fluorocyclohexane derivatives.
Strong photoinduced Bragg gratings in arsenic selenide optical fibre using transverse holographic method (2008)

Fabrication of strong fibre Bragg gratings in singlemode arsenic selenide (As2Se3) fibre for use at telecom wavelengths by the transverse holographic method is reported. Photoinduced decrease in the material refractive index was achieved using low-intensity CW illumination at a wavelength of 785 nm. A peak grating strength of 23.7 dB is seen, with inferred change in the average refractive index as large as 4.7×10−3.
A level set framework for the numerical modelling of primary recrystallization (2008)

International audience
Modulation Diversity in Fading Channels with a Quantized Receiver (2011)

In this paper, we address the design of codes which achieve modulation diversity in block fading single-input single-output (SISO) channels with signal quantization at the receiver. With an unquantized receiver, coding based on algebraic rotations is known to achieve maximum modulation coding diversity. On the other hand, with a quantized receiver, algebraic rotations may not guarantee gains in diversity. Through analysis, we propose specific rotations which result in the codewords having equidistant component-wise projections. We show that the proposed coding scheme achieves maximum modulation diversity with a low-complexity minimum distance decoder and perfect channel knowledge. Relaxing the perfect channel knowledge assumption we propose a novel channel training/estimation technique to estimate the channel. We show that our coding/training/estimation scheme and minimum distance decoding achieves an error probability performance similar to that achieved with perfect channel knowledge.
Noggin Improves Bone Healing Elicited by Muscle Stem Cells Expressing Inducible BMP4 (2005)

The aim of this study was to test the hypothesis that a specific antagonist may enhance the efficacy of its corresponding growth factor in a regulated tissue engineering strategy. Our prior research has led to the development of a retroviral vector that enables optimal regulated bone morphogenetic protein 4 (BMP4) expression in vitro and regulated bone formation in vivo with transduced muscle stem cells. However, when implanted in critical-sized calvarial defects, these cells led to residual bone formation without induction or bone overgrowth with induction, even at reduced cell doses. We thus co-implanted the aforementioned cells with stem cells engineered to express Noggin, a specific BMP antagonist. This approach, while preserving our ability to regulate bone regeneration closely, prevented both the basal level bone regeneration and the bone overgrowth and, more importantly, led to the regeneration of bone that more closely resembled normal bone. We believe that this regulatable tissue engineering strategy, enhanced by utilizing a specific antagonist, constitutes a new paradigm for tissue engineering and regenerative medicine.
Time Reversal Precoding at SubTHz Frequencies: Experimental Results on Spatiotemporal Focusing (2021)

International audience
Authors' response (Comments on "Scan impedance for an infinite dipole array: Hansen's formulas compared with Ansoft HFSS simulations") (2008)

The authors reply to comments by M. Jones and S. Ortiz (see ibid., vol.50, no.1, p.188-191, February 2008). For the authors' original article see ibid., vol.49, no.4, p.143-156, August 2007.
ct of PVVM Inverters on tor (1996)

This paper investigates ac induction motor shaft voltage problems, current flow thru motor bearings and elec- tric discharge current problems within bearings when operated under both pure sinewave and pulse width modulated (PWM) inverter sources. Recent experience suggests that PWM voltage sources with steep wavefronts especially increase the magnitude of the above electrical problems, leading to motor bearing ma- terial erosion and early mechanical failure. Previous literature suggests that shaft voltage-bearing current problems under 60 Hz sinewave operation are predominantly electromagnetically induced. It is proposed that under PWM operation these same problems are now predominantly an electrostatic phenomenon. A system model to describe this phenomenon is characterized and developed. Construction and test of a new electrostatic shielded induction motor (ESIM) verifies this model and is also a possible solution to the bearing current problem under PWM operation.
Effect of Graphitic Content on Carbon Supported Catalyst Performance (2011)

The effect of graphitic content on carbon supported platinum catalysts was investigated in order to investigate its influence on catalyst performance. Four catalysts of varying surface areas and graphitic content were analyzed using XPS, HREELS, and tested using RDE experiments. The catalysts were also heat treated at 150oC and 100%RH as means to uniformly age them. The heat treated samples were analyzed using the same methods to determine what changes had occurred due to this aging process. When compared to the BOL catalysts, heat treated catalysts displayed increased graphitic carbon and platinum metalic content, however they also showed depressed catalytic activity. The primary cause is still under investigation, though it is believed to be related to loss of amorphous carbon content.
Crescimento de dois cultivares de soja submetidos a aplicações de herbicidas e fungicidas (2010)

Existem relatos de que a aplicação de fungicidas do grupo das estrobilurinas na cultura da soja tem trazido aumento de produtividade mesmo em locais sem incidência de doenças, indicando que as alterações de ordem fisiológica devem ser quantificadas. Este estudo foi desenvolvido com o objetivo de avaliar o crescimento de dois cultivares de soja (MG/BR46 Conquista e BRS Valiosa RR) submetidos a aplicações de herbicidas e fungicidas (estrobilurinas e/ou triazóis). Dois experimentos foram desenvolvidos em campo com esquema de tratamentos em parcelas subdivididas no tempo (5 x 12), em que nas parcelas foram alocadas cinco combinações de herbicidas (glyphosate a 720 g ha-1 ou sethoxydim (230 g ha-1) + bentazon + chlorimuron-ethyl (480 + 11,25 g ha-1)) e fungicidas (pyraclostrobin a 75 g ha-1, epoxiconazole a 50 g ha-1 ou pyraclostrobin + epoxiconazole (66,5 + 25 g ha-1)); e como subparcelas foram consideradas as datas de avaliação entre 30 e 120 dias após semeadura. A aplicação de herbicidas não alterou o crescimento dos cultivares de soja. A aplicação de fungicidas do grupo das estrobilurinas associado a triazóis promoveu maior acúmulo de massa de matéria seca e área foliar. Ainda a aplicação desses fungicidas em R2 (pleno florescimento) e R5.1 (enchimento de grãos) resultou em maiores valores de taxas de crescimentos absoluto e relativo, assimilatória líquida e de crescimento da cultura em período próximo ao final do ciclo da cultura, diferenciando, inclusive, dos tratamentos com aplicação somente de triazóis.
Methods for rule-based genome design (2023)

Methods and systems for designing, testing, and validating genome designs based on rules or constraints or conditions or parameters or features and scoring are described herein. A computer-implemented method includes receiving data for a known genome and a list of alleles, identifying and removing occurrences of each allele in the known genome, determining a plurality of allele choices with which to replace occurrences in the known genome, generating a plurality of alternative gene sequences for a genome design based on the known genome, wherein each alternative gene sequence comprises a different allele choice, applying a plurality of rules or constraints or conditions or parameters or features to each alternative gene sequence by assigning a score for each rule or constraint or condition or parameter or feature in each alternative gene sequence, resulting in scores for the applied plurality of rules or constraints or conditions or parameters or features, scoring each alternative gene sequence based on a weighted combination of the scores for the plurality of rules or constraints or conditions or parameters or features, and selecting at least one alternative gene sequence as the genome design based on the scoring.
KIDCAM &#x2014; A passive THz imager (2011)

KIDCAM is demonstration of a deployable cryogen-free passive THz imaging technology. A linear focal plane array of Lumped Element Kinetic Inductance Detectors (LEKIDs) is cooled to sub-K temperatures without the consumption of liquid cryogens. The instrument offers extremely high detection sensitivity with video frame rate capability and high spatial resolution to suit many imaging applications. The detector technology is largely insensitive to its environment and can be used within a wide range of THz frequencies.
Implementation of Accurate Per-Flow Packet Loss Monitoring in Segment Routing over IPv6 Networks (2020)

Segment Routing over IPv6 (SRv6 in short) is a networking solution for IP backbones and datacenters, which has been recently adopted in several of large scale network deployments. The SRv6 research, standardization and implementation activities are going on at a remarkable pace. In particular, a number of Internet Drafts have been submitted related to the Performance Monitoring (PM) of flows in an SRv6 network. In this paper we discuss the proposed PM approaches, considering both data plane and control plane aspects and focusing on loss monitoring. Then we describe the implementation of a per-flow packet loss measurement (PF-PLM) solution based on the “alternate marking” method. Our implementation is based on Linux kernel networking and it is open source. We describe a platform that can be used to validate the standardization proposals from a functional perspective and the implemented solution from the performance point of view. We analyze two different design choices for the implementation of PF-PLM and evaluate their impact on the maximum forwarding throughput of a software based (Linux) router
Inhibitors of HIV-1 Proteinase Containing 2-Heterosubstituted 4-Amino-3-hydroxy-5-phenylpentanoic Acid: Synthesis, Enzyme Inhibition, and Antiviral Activity (1994)

A convenient procedure for the synthesis of 2-heterosubstituted statine derivatives as novel building blocks in HIV-protease inhibitors has been developed. The synthesis starts with protected L-phenylalaninols, which were converted to gamma-amino alpha, beta-unsaturated esters in a one-pot procedure. A highly diastereoselective epoxidation of the N-protected (E)-enoates, followed by regioselective ring opening of the corresponding 2,3-epoxy esters with a variety of heteronucleophiles, resulted in 2-heterosubstituted statine derivatives. The overall stereo-chemical outcome of the transformations meets the required configuration of HIV-protease inhibitors. The short, synthetically flexible, and highly diastereoselective synthesis of 2-heterosubstituted statines has enabled a broad derivation, covering the S3, S2, and S1'-S3' sites of the enzyme. In a series of 46 derivatives, several potent inhibitors were obtained with Ki values as low as 3.4 nM and antiviral activity in the lower nanomolar-range. The structural parameters of the compounds which determine the potency of inhibition and selectivity for the viral enzyme are discussed.
Machine Learning Based Operating Region Extension of Modular Multilevel Converters Under Unbalanced Grid Faults (2020)

The capacitor voltage ripples of the modular multilevel converter (MMC) are increased under unbalanced grid fault conditions. Since high capacitor voltage ripples deteriorate their lifetimes and may even cause tripping of the MMC system, it is important to restrict them. To this end, it is well known that injecting double fundamental frequency circulating currents can reduce the capacitor voltage ripples. However, finding a proper circulating current reference to achieve desired ripples analytically is complicated. This letter proposes an alternative method to quickly calculate the proper circulating current references without analytical computations, which is achieved by an artificial neural network (ANN) trained to approximate the relationship between circulating current references and capacitor voltage ripples. The training data are first extracted from a detailed simulation model of the MMC. Afterward, the ANN is trained by the input-output data to obtain the mapping relationship, which is then used to derive the desired circulating current references. Both the simulation and the experimental results verify the practicability of the proposed method, where the operating region can be extended 30% at a minimum in all testing conditions.
HSPA Radio Performance (2009)

This chapter contains sections titled: HSDPA Lab Performance Evaluation HSUPA Lab Performance Evaluation Field Evaluation Other Performance Considerations Summary References
Parental bonding in severely suicidal adolescent inpatients (2011)

Abstract Family environment has a clear role in suicidal behavior of adolescents. We assessed the relationship between parental bonding and suicidal behavior in suicidal ( n = 53) and non-suicidal ( n = 47) adolescent inpatients. Two dimensions of parental bonding: care and overprotection, were assessed with the Parental Bonding Instrument. Results showed that adolescents with severe suicidal behavior tended to perceive their mothers as less caring and more overprotective compared to those with mild or no suicidal behavior. A discriminant analysis distinguished significantly between adolescents with high suicidality and those with low suicidality [χ 2 (5) = 15.54; p = 0.01] in 71% of the cases. The perception of the quality of maternal bonding may be an important correlate of suicidal behavior in adolescence and may guide therapeutic strategies and prevention.
Challenges for enabling virtual reality broadcast using 5G small cell network (2018)

In the recent past, with the ubiquitous adoption of smartphones and tablets, there has been an exponential increase in data rate demands which has become increasingly challenging for network operators to support. This trend is expected to continue in future, with the advent of high-performance gaming and increasing appetite for immersive applications and social media experiences. Such factors have contributed to the development of the fifth generation (5G) of mobile networks, which would be supporting significantly higher data rates with improved reliability and latency. 5G has also enabled the deployment of wireless virtual reality applications, with wide-ranging use cases. In this work, we consider the key challenges for broadcasting such content to a large number of audience thereby enabling new disruptions in mass media consumption. The technology potential and practical constraints for such deployments were also evaluated using realistic network settings. Based on the performance evaluations, it was shown that with slightly higher system bandwidth requirements, VR broadcast can be supported under ideal conditions, using 5G millimeter wave small cell networks. Potential areas for future work in order to make VR broadcast a reality is also discussed.
Assessment of intraductal carcinoma in situ (DCIS) using grating-based X-ray phase-contrast CT at conventional X-ray sources: An experimental ex-vivo study (2019)

GBPC-CT imaging at conventional X-ray sources offers improved depiction quality for the imaging of breast tissue samples compared to absorption-based imaging, allows the identification of diagnostically relevant tissue details, and provides full three-dimensional assessment of sample margins.
Short-time piezoelectric measurements in ferroelectric thin films using a double-beam laser interferometer (2003)

An evolution of the double-beam laser interferometer used for piezoelectric measurements in ferroelectric thin films is reported. Measuring the d33 hysteresis of a ferroelectric material using lock-in technique with large time constants requires a varying bias field to be applied to the sample over a long period of time. This long-term application leads to electrical stress during the measurement. We present a measurement technique using a different source for the applied field and a varied method for averaging the interferometric response. The measurement time for a complete d33 hysteresis will be shortened down to several seconds. Also, the cycle frequency becomes comparable to electrical hysteresis measurements. Experimental results on quartz and Pb(Zr(X),Ti(1−X))O3 are given to demonstrate the capabilities of the interferometer and the new measurement method.