gebhart/patrepeval huggingface dataset:
Electroless Deposition and Characterization of PtxRu1−x Catalysts on Pt/C Nanoparticles for Methanol Oxidation (2010)

The electroless deposition of PtxRu1−x catalysts using hydrazine dihydrochloride or formic acid as the reducing agent in a modified Leaman bath was investigated. The effect of potential on the PtxRu1−x composition was investigated by potentiostatically depositing PtxRu1−x thin films on gold from acidic chloride electrolytes at potentials between −0.46 V and 0.34 V (versus normal hydrogen electrode). The physical characteristics and elemental composition of the deposits were determined. An empirical model for the deposition process was developed, taking into account reactant concentration, temperature, and surface potential. The model accurately characterized the deposit composition over a wide Pt/Ru range. The surface potential was estimated to be 0.15 V during electroless deposition using formic acid as the reducing agent based on the empirical model. Deviations from the model were found when hydrazine was used as the reducing agent due to the formation of solution phase ruthenium complexes with hydrazine.
The Complement System in Ovarian Cancer: An Underexplored Old Path (2021)

Ovarian cancer is one of the most lethal gynecological cancers. Current therapeutic strategies allow temporary control of the disease, but most patients develop resistance to treatment. Moreover, although successful in a range of solid tumors, immunotherapy has yielded only modest results in ovarian cancer. Emerging evidence underscores the relevance of the components of innate and adaptive immunity in ovarian cancer progression and response to treatment. Particularly, over the last decade, the complement system, a pillar of innate immunity, has emerged as a major regulator of the tumor microenvironment in cancer immunity. Tumor-associated complement activation may support chronic inflammation, promote an immunosuppressive microenvironment, induce angiogenesis, and activate cancer-related signaling pathways. Recent insights suggest an important role of complement effectors, such as C1q or anaphylatoxins C3a and C5a, and their receptors C3aR and C5aR1 in ovarian cancer progression. Nevertheless, the implication of these factors in different clinical contexts is still poorly understood. Detailed knowledge of the interplay between ovarian cancer cells and complement is required to develop new immunotherapy combinations and biomarkers. In this context, we discuss the possibility of targeting complement to overcome some of the hurdles encountered in the treatment of ovarian cancer.
Streamlined MIMO cross-over digital predistortion (2014)

This paper proposes a simplified algorithm for linearizing MIMO nonlinear systems. The linearization technique is designed for MIMO systems with nonlinear cross-talk. The new algorithm relies on estimating the coupling factor and building the 2×2 DPD based on two 1×1 DPDs. The algorithm is around two times faster than the conventional method whilst the performance is reasonably close to the conventional technique.
Kernel Selection for Support Vector Machines for System Identification of a CNC Machining Center (2019)

Advanced learning methods enable the model-based control of systems with complex unknown dependencies. Within the German cluster of excellence “Internet of Production”, a configuration for an interconnected data-base is proposed, where data-driven model-based control strategies can be applied using the collective knowledge and adapted online according to data. For the exchanged data it is imperative to establish a generalizing learning technique for the controller design. A machine learning technique with inherent generalization ability is the Support Vector Machines (SVM) algorithm, where the choice of kernel is crucial for the resulting model quality. In the related literature, usually a radial basis function (RBF) is chosen as kernel, although many studies show the necessity of a more sophisticated kernel selection. This work tackles the point of a kernel selection based on composite kernel search in context of data-driven model-based control of a CNC machining center. The results support the capability of the presented approach to further automate and improve the identification of the controller model for the machining center.
Unified Strategy for Nickel-Catalyzed C-2 Alkylation of Indoles through Chelation Assistance (2016)

A nickel-catalyzed direct C-2 alkylation of indoles through monodentate-chelation assistance has been described. This reaction proceeds via an unusual strategy by the use of a well-designed and defined (quinolinyl)amido–nickel catalyst, [{κN,κN,κN-Et2NCH2C(O)(μ-N)C9H6N}Ni(OAc)], providing a solution to the limitations associated with bidentate-chelate auxiliaries. The method allows coupling of indoles with various unactivated primary and secondary alkyl halides with ample substrate scope. This uniquely strategized alkylation proceeded through crucial C–H activation and via an alkyl radical intermediate. The reaction by this approach represents a rare example of Ni-catalyzed monodentate-chelate-assisted C–H functionalization.
Supplementary Figure 1 from Circulating B-Cell Chronic Lymphocytic Leukemia Cells Display Impaired Migration to Lymph Nodes and Bone Marrow (2023)

Supplementary Figure 1 from Circulating B-Cell Chronic Lymphocytic Leukemia Cells Display Impaired Migration to Lymph Nodes and Bone Marrow
Alignment-free, all-spliced fiber laser source for CARS microscopy based on four-wave-mixing (2012)

An environmentally-stable low-repetition rate fiber oscillator is developed to produce narrow-bandwidth pulses with several tens of picoseconds duration. Based on this oscillator an alignment-free all-fiber laser for multi-photon microscopy is realized using in-fiber frequency conversion based on four-wave-mixing. Both pump and Stokes pulses for coherent anti-Stokes Raman scattering (CARS) microscopy are readily available from one fiber end, intrinsically overlapped in space and time, which drastically simplifies the experimental handling for the user. The complete laser setup is mounted on a home-built laser scanning microscope with small footprint. High-quality multimodal microscope images of biological tissue are presented probing the CH-stretching resonance of lipids at an anti-Stokes Raman-shift of 2845 cm(-1) and second-harmonic generation of collagen. Due to its simplicity, compactness, maintenance-free operation, and ease-of-use the presented low-cost laser is an ideal source for bio-medical applications outside laser laboratories and in particular inside clinics.
Investigation of peripheral fusional and refusional areas (2000)

Sizes of fusional and refusional areas were measured at various eccentricities between ±12° for a 40 cm fixation distance. It is shown that the size of fusional areas (SFA) may increase or stay quasi-constant with eccentricity, depending on the observer. For all observers, the size of refusional areas is within the limits of SFA and remains quasiconstant with eccentricity.
Flight test of a pseudo‐ranging signal compatible with existing distance measuring equipment (DME) ground stations (2020)

<h3>Abstract</h3> Distance measuring equipment (DME) has been a cornerstone of aviation navigation for the last 70 years. While GNSS is taking an increasingly important role in civil aviation, DME can still play an important role in a robust aviation infrastructure in the foreseeable future. Advanced concepts have been developed to improve DME performance and capabilities. One concept is a DME-based pseudolite that position modulates existing DME pulse pairs. It is interoperable with DME operations and can be generated using the currently fielded DME transponders with an appliqué. This concept is suitable as a robust alternative to GNSS for aviation navigation or timing. The paper examines the performance of DME pseudolite implemented via an appliqué on a DME transponder. The paper examines the synchronization and data performance of the DME pseudolite signal in the air and on the ground. The paper compares the actual performance to theoretical results.
ChemInform Abstract: Large‐Scale Synthesis of Anticoagulant Decapeptide MDL 28050. (1992)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Development and Amputee Validation of Pressure and Shear Sensing Liner for Prosthetic Sockets. (2018)

Abstract not provided.
Digital Holographic Microscopy for quantitative micro-tomography of living specimen: volume estimation of Hyalosphenia papilio (2006)

Keywords: [MVD] Reference LOA-CONF-2006-008 Record created on 2009-07-20, modified on 2017-05-10
Zero Torque Compliant Mechanisms Employing Pre-buckled Beams (2020)

Abstract The concept of a statically balanced mechanism with a single rotational degree-of-freedom is presented. The proposed device achieves static balancing by combining positive stiffness elements and negative stiffness elements within an annular domain. Two designs are discussed. The first is composed of an Archimedean spiral and two pinned-pinned pre-buckled beams. The overall mechanism is modeled via an analytical approach and the element dimensions are optimized. The optimal configuration is then tested through finite element analysis (FEA). A second approach replaces the spiral beam with elastic custom-shaped spline beams. A FEA optimization is performed to determine the shape and size of such spline beams. The behavior of the negators is used as reference for the optimization so as to achieve a complete balancing. A physical prototype of each configuration is machined and tested. The comparison between predicted and acquired data confirmed the efficacy of the design methods.
Supplementary Figure 5 from Network Analysis Identifies an HSP90-Central Hub Susceptible in Ovarian Cancer (2023)

&lt;p&gt;PDF file - 172KB, HSP90-interacting proteins in ganetespib-treated cells and tumors.&lt;/p&gt;
Beam-Pattern Assisted Low-Complexity Beam Alignment for Fixed Wireless mmWave xHaul (2022)

This paper presents the design of two-stage beam alignment methods employing a hybrid analog-digital antenna array and exploiting the beam pattern in a point-to-point millimeter-wave (mmWave) radio for mmWave massive multiple-input multiple-output systems. We investigate an antenna deactivating approach that generates wider beams at the coarse alignment stage and exploit the theoretical beam pattern at the fine alignment stage. Our numerical results show that the proposed two-stage methods can achieve a better beam alignment than existing exhaustive methods and avail measurements/complexity reductions by tuning key parameters governing the alignment performance.
Hybrid Intelligent System for Driver Workload Estimation for tailored vehicle-driver communication and interaction (2010)

Advanced vehicle cabin technologies provide drivers infotainment, navigation, and enhanced convenient driving experiences. As interaction between the driver and in cabin technologies increases it is beneficial to provide tailored driver communication for an improved cabin experience. Assessment of the driving demand is of particular value to assist in modulating communication and vehicle system interactions with the driver. The complex vehicle, driver, and environment driving contexts require innovative prognostic approaches to driver workload inference. This paper presents a Hybrid Intelligent System for Driver Workload Estimation (HWLE). The real-time HWLE soft computing modules incorporate expert models, model-driven reasoning, and specialized computational intelligence techniques to compute an aggregated WLE-Index. The context depended WLE-Index facilitates tailoring vehicle-driver communication and interaction based on the driving demand. Results from application of the HWLE system under real-time conditions are presented.
Piezo-electric characteristic of PZT films using RF-sputtering and Spin-coating methods (2015)

【目的】PbZrxTi1-xO3(PZT)は、ペロブスカイト構造を有する代表的な強誘電体材料である。 近年、その膜は各種センサ等の微小電気機械デバイス(Fe-MEMS)への応用が期待されている。 また PZTは結晶配向性の違いにより異なる圧電特性を示すことが知られており、本研究は、電子 デバイス応用に向けた PZT(001)強配向膜を得ることを目的とする。 【実験方法】我々は、(001)方向に完全配向した PZT 膜を形成する為に、(200)Pt 基板及び PbZrO3(PZO)バッファ層を用いた。この基板の上に、我々は 2μm 膜厚の PbZr0.55Ti0.45O3を RF ス パッタリング法並びにスピンコート法を用いて、(株)ユーテック製全自動装置群を用いて形成し、 強誘電性及び圧電性を比較した。PZT配向度は、リガク社製 XRD回折装置(Smart Lab)と 2次元検 出器を用いて、従来のθ-2θ評価と広域逆格子マップにより評価した。更にカンチレバーによる 圧電 d31,d33定数測定、D-E ヒステリシス特性及び S-E バタフライ特性評価、により両膜における 圧電特性の比較評価を行った。 【結果及び考察】得られた膜(図 1)の結晶配向性を X線回折(図 2,3)により評価したところ、両手 法による PZTとも良好な(001)単一配向膜であり、単結晶性の強い PZT膜であることが示唆さ れた。しかしながら、圧電性に関して、両者に大きな違いが見られた。どちらも形成直後より良 好な自発分極膜であり、ユニポーラ駆動の場合はいずれも d31=-120pm/V を示したが、バイポー ラ駆動(±2.5V@700Hz)による d31特性は、スパッタ PZTが d31=-120pm/V、スピンコート PZTが d31=-100pm/Vであった。この差は成膜法の違いから来ており、スパッタ PZTの圧電性は配向分 極とイオン分極の両分極成 分から成り、スピンコート PZTの圧電性は配向分極の みから成立している為と考 えられる。D-E ヒステリシ ス特性と S-Eバタフライ特 性を比較したところ、d31 の数値以上に圧電性起源の 違いを示しており、特にス ピンコートPZTは膜形成時 の残留歪の大きさが反映さ れた圧電性を示した。 第76回応用物理学会秋季学術講演会 講演予稿集 (2015 名古屋国際会議場) 16a-2L-1
Real Time In Situ X‐Ray Diffraction Study of the High Temperature Mechanical Behavior of a Rafted Single Crystal Superalloy (2015)

This chapter contains sections titled: Introduction Experimental Data Analysis Results: Stepwise Loading Results: Temperature Jumps Concluding Remarks Acknowledgments
A Light Signaling Approach to Node Grouping for Massive MIMO IoT Networks (2022)

Massive MIMO is one of the leading technologies for connecting very large numbers of energy-constrained nodes, as it offers both extensive spatial multiplexing and large array gain. A challenge resides in partitioning the many nodes into groups that can communicate simultaneously such that the mutual interference is minimized. Here we propose node partitioning strategies that do not require full channel state information, but rather are based on nodes’ respective directional channel properties. In our considered scenarios, these typically have a time constant that is far larger than the coherence time of the channel. We developed both an optimal and an approximation algorithm to partition users based on directional channel properties, and evaluated them numerically. Our results show that both algorithms, despite using only these directional channel properties, achieve similar performance in terms of the minimum signal-to-interference-plus-noise ratio for any user, compared with a reference method using full channel knowledge. In particular, we demonstrate that grouping nodes with related directional properties is to be avoided. We hence realize a simple partitioning method, requiring minimal information to be collected from the nodes, and in which this information typically remains stable over the long term, thus promoting the system’s autonomy and energy efficiency.
Substrate specificity of endoglucanase A from Cellulomonas fimi: fundamental differences between endoglucanases and exoglucanases from family 6 (1996)

Values of kcat. and Km for the hydrolysis of cellotetraose, cellotriose, beta-cellobiosyl fluoride and various beta-aryl cellobiosides by endoglucanase A (CenA) from Cellulomonas fimi indicate that specific binding interactions between the reducing-end glucose residues of cellotetraose and cellotriose and the enzyme at the transition state provide enormous stabilization, endowing glucose with the "effective leaving group ability' of 2,4-dinitrophenol. As has been seen with several other inverting glycosidases, CenA hydrolyses the "wrong' anomer of its glycosyl fluoride substrate, alpha-cellobiosyl fluoride, according to non-Michaelian kinetics. This indicates that CenA carries out this hydrolysis by a mechanism involving binding of two substrate molecules in the active site (Hehre, Brewer and Genghof (1979) J. Biol. Chem. 254, 5942-5950] in contrast with that reported for cellobiohydrolase II, another family-6 enzyme [Konstantinidis, Marsden and Sinnott (1993) Biochem. J. 291, 833-838]. The pH profiles for wild-type CenA indicate that kcat. for CenA depends on the presence of both a protonated group and a deprotonated group for full activity, consistent with the presence of an acid and a base catalyst at the active site. By contrast, the profile for the Asp252Ala mutant of CenA shows a dependence only on a base-catalytic group, thereby confirming the role of Asp-252 as an acid catalyst. These results show that hydrolysis by CenA occurs by a typical inverting mechanism involving both acid and base catalysis, as first proposed by Koshland. It also suggests that endoglucanases from family 6 may function by fundamentally different mechanisms for exoglucanases in this family.
Optical electrochemistry. 2. Real-time spectroscopy of conduction band electrons in a metal oxide semiconductor electrode (1991)

ADVERTISEMENT RETURN TO ISSUEArticleNEXTOptical electrochemistry. 2. Real-time spectroscopy of conduction band electrons in a metal oxide semiconductor electrodeBrian O'Regan, Michael Graetzel, and Donald FitzmauriceCite this: J. Phys. Chem. 1991, 95, 26, 10525–10528Publication Date (Print):December 1, 1991Publication History Published online1 May 2002Published inissue 1 December 1991https://pubs.acs.org/doi/10.1021/j100179a001https://doi.org/10.1021/j100179a001research-articleACS PublicationsRequest reuse permissionsArticle Views742Altmetric-Citations87LEARN 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 options Get e-Alerts
Calibration kernels with Alternative Sampling Scheme (CASS) for Parallel Imaging: SENSE meets CASS (2023)

We developed new calibration kernels with an alternative undersampling scheme (CASS) for parallel imaging to reduce coherent aliasing artifacts and noises. By sampling k-space lines with irregular and blockwise patterns, incoherent aliasing patterns and noise signals were spread in reconstructed CASS images. Noteworthily, the CASS method outperformed the conventional GRAPPA method at higher acceleration factors.
Using vanishing points to improve visual-inertial odometry (2015)

This work presents a method for increasing the accuracy of standard visual inertial odometry (VIO) by effectively removing the angular drift that naturally occurs in feature-based VIO. In order to eliminate such drift, we propose to leverage the predominance of parallel lines in man-made environments by using the intersection of their image projections, known as vanishing points (VPs). First, an efficient inertial-based method is presented that accurately and efficiently detects such points. Second, a strategy to deal with these measurements within the framework of an EKF-based VIO system is presented. Furthermore, special care is taken in order to ensure the real-time execution of the estimator in order to comply with time-critical applications running on computationally constrained platforms. Experiments are performed in a mobile device on challenging environments and evaluated against the same VIO system without the use of VPs, demonstrating the superior accuracy when employing the proposed framework.
Clinical characteristics of African Americans vs Caucasian Americans with multiple sclerosis (2004)

Compared with multiple sclerosis (MS) in Caucasian Americans, African American patients with MS have a greater likelihood of developing opticospinal MS and transverse myelitis and have a more aggressive disease course.
Dynamic instrumentation of production systems (2004)

Rights to individual papers remain with the author or the author&amp;apos;s employer. Permission is granted for noncommercial reproduction of the work for educational or research purposes. This copyright notice must be included in the reproduced paper. USENIX acknowledges all trademarks herein.
Multiple SOI layers by multiple Smart-Cut/sup (R)/ transfers (2002)

Silicon on insulator (SOI) technologies are now entering mainstream applications, with recent announcements regarding for instance microprocessor applications. One condition for this to happen has been proof that SOI material manufacturing processes exist that are compatible with such industrial developments (availability, cost, quality, etc.). Among those processes, the Smart-Cut/sup (R)/ process is based on layer transfer from one substrate to another (Bruel, 1996). Stacking monocrystalline silicon on another silicon substrate with a silica layer in between is then possible and indeed is being used on a industrial scale to manufacture SOI wafers. Beyond simple SOI wafers that can also be high value added substrates for other applications such as photonics, sensors and other micromachining purposes, we demonstrate in this paper how the Smart-Cut/sup (R)/ process can be seen as a basic step and how this process can be used to realize multiple SOI wafers, allowing different crystalline and/or amorphous layers to be stacked.
CHEMICAL COMPOSITION OF SHALE OIL I. DEPENDENCE ON OIL SHALE ORIGIN (1991)

ABSTRACT Shale oils obtained by nitrogen retorting of North Carolina, Cleveland, Ohio, Colorado, Rundle, Stuart, and Condor oil shales have been chemically characterized by g.c.-m.s. techniques. After species identification, chemical compositions of the shale oils have been related to the geological origins of the parent shales. Based on the characteristics observed in the chromatograms, eight semi-quantitative parameters have been used to describe the chromatograms. Six of these parameters describe the relative abundance and distribution of straight chain alkanes and alkenes in the chromatograms. The other two parameters represent the abundance, relative to the total amount of volatiles in the oil, of alkylbenzenes and alkylphenols.
Chromosomal passenger complex hydrodynamics suggests chaperoning of the inactive state by nucleoplasmin/nucleophosmin (2017)

The chromosomal passenger complex (CPC) is a conserved, essential regulator of cell division. As such, significant anti-cancer drug development efforts have been focused on targeting it, most notably by inhibiting its AURKB kinase subunit. The CPC is activated by AURKB-catalyzed autophosphorylation on multiple subunits, but how this regulates CPC interactions with other mitotic proteins remains unclear. We investigated the hydrodynamic behavior of the CPC in <i>Xenopus laevis</i> egg cytosol using sucrose gradient sedimentation and in HeLa cells using fluorescence correlation spectroscopy. We found that autophosphorylation of the CPC decreases its sedimentation coefficient in egg cytosol and increases its diffusion coefficient in live cells, indicating a decrease in mass. Using immunoprecipitation coupled with mass spectrometry and immunoblots, we discovered that inactive, unphosphorylated CPC interacts with nucleophosmin/nucleoplasmin proteins, which are known to oligomerize into pentamers and decamers. Autophosphorylation of the CPC causes it to dissociate from nucleophosmin/nucleoplasmin. We propose that nucleophosmin/nucleoplasmin complexes serve as chaperones that negatively regulate the CPC and/or stabilize its inactive form, preventing CPC autophosphorylation and recruitment to chromatin and microtubules in mitosis.