gebhart/patrepeval huggingface dataset:
Kinetic, Equilibrium and Thermodynamic Studies of Cadmium (II) Adsorption by Modified Agricultural Wastes (2011)

Agricultural wastes have great potential for the removal of heavy metal ions from aqueous solution. The contamination of water by toxic heavy metals is a worldwide environmental problem. Unlike organic pollutants, the majority of which are susceptible to biological degradation, heavy metals do not degrade into harmless end products. Discharges containing cadmium, in particular, are strictly controlled because of the highly toxic nature of this element and its tendency to accumulate in the tissues of living organisms. This work aims to develop inexpensive, highly available, effective metal ion adsorbents from natural wastes as alternatives to existing commercial adsorbents. In particular, Tamrix articulata wastes were modified chemically by esterification with maleic acid to yield a carboxyl-rich adsorbent. The adsorption behavior of treated Tamrix articulata wastes toward cadmium ions in aqueous solutions in a batch system has been studied as a function of equilibration time, adsorbent dose, temperature and pH. Results showed that the maximum adsorption capacity was 195.5 mg/g in a pH 4 solution at 30 °C with a contact time of 120 min, an initial concentration of 400 mg/L and an adsorbent dose of 0.3 g/L. The kinetic data were analyzed using pseudo-first-order and pseudo-second-order kinetic models. It was shown that the adsorption of cadmium could be described by a pseudo-second-order equation. The experimental data were also analyzed using the Langmuir and Freundlich models of adsorption. Thermodynamic parameters such as ΔGo, ΔHo and ΔSo have been evaluated and it has been found that the sorption process was spontaneous and exothermic in nature. From all of our data, we conclude that the treated Tamrix articulata wastes investigated in this study showed good potential for cadmium removal from aqueous solutions.
Fourier-synthesis custom-coherence illuminator for extreme ultraviolet microfield lithography (2003)

Scanning illumination systems provide for a powerful and flexible means for controlling illumination coherence properties. Here we present a scanning Fourier synthesis illuminator that enables microfield extreme ultraviolet lithography to be performed on an intrinsically coherent synchrotron undulator beamline. The effectiveness of the system is demonstrated through a variety of print experiments, including the use of resolution enhancing coherence functions that enable the printing of 50-nm line-space features by use of a lithographic optic with a numerical aperture of 0.1 and an operational wavelength of 13.4 nm.
E ciency of NPMLE in Nonparametric Missing Data Models (2001)

Suppose that a random variable X of interest is grouped or censored or missing so that one only observes a coarsening of X i e a random set containing X with probability It is assumed that the coarsening mechanism has the coarsening at random property Suppose furthermore that the coarsening either equals X itself or that is a set with positive X probability We modify the NPMLE of the distribution of X by demanding that its support is the set of observed data points We provide a general theorem giving su cient conditions for e ciency of this NPMLE or e ciency of the NPMLE after a small data reduction We apply the theorem to a number of examples
Network Information Management and Distribution in a Heterogeneous and Decentralized Enterprise Environment (2000)

To promote enterprise-wide information and resource sharing, we have implemented a network information management and distribution system that gives subscribing systems real-time access to relevant information changes. Participating systems need little more than a small, single application to receive the updates. User interaction and data administration require only a web browser. The resulting system is timely, reliable, secure, easy to support and maintain, and extensible.
Improvement of Selective Properties of Waveguide Bragg Resonators (2003)

A method to improve the selective properties of a waveguide resonator with Bragg reflectors on its ends is investigated. It is shown that additional mode conversions lead to a significantly rarefied spectrum of eigenoscillations. This can be achieved by using doubly periodic Bragg reflectors with different azimuthal symmetries forming four wave resonant field structures. The analysis of the dispersion properties is presented and is applicable for resonators of arbitrary relation of lengths of the reflectors and waveguide.
Fabrication of gadolinium particle-based absorption gratings for neutron grating interferometry (2018)

The imaging performance of a neutron-based Talbot-Lau interferometer depends to a great extent on the absorption characteristics of the source and analyzer gratings. Due to its high neutron attenuation, gadolinium (Gd) is the preferred material for grating fabrication, but suffers from difficulties with deposition time, stability, uniformity, and selectivity into high aspect ratio structures. Here we present a simple alternative method of Gd deposition into grating structures based on metallic particle suspension casting and subsequent doctor-blading. Surface analysis by confocal and electron scanning microscopy shows that a nearly clear, particle free silicon interface of the grating structure over a large area could be reached. Additionally, characterization by neutron radiography confirms a high effective Gd height and homogeneity over the whole grating area. In particular, grating trenches well below 10 <i>μ</i>m width could be successfully filled with Gd and deliver excellent absorbing performance down to the sub-2 Å wavelength range. The findings confirm that we obtained an effective binary absorption profile for the fabricated gratings which is of great benefit for grating-based neutron imaging.
FIBER METAL LAMINATES MADE BY THE VARTM PROCESS (2009)

Fiber metal laminates (FMLs) are multi-component materials utilizing metals, fibers and matrix resins. Tailoring their properties is readily achievable by varying one or more of these components. Established FMLs like GLARE utilize aluminum foils, glass fibers and epoxy matrices and are manufactured using an autoclave. Two new processes for manufacturing FMLs using vacuum assisted resin transfer molding (VARTM) have been developed at the NASA Langley Research Center (LaRC). A description of these processes and the resulting FMLs are presented.
Drug-Induced Dynamics of Bile Colloids (2021)

Bile colloids containing taurocholate and lecithin are essential for the solubilization of hydrophobic molecules including poorly water-soluble drugs such as Perphenazine. We detail the impact of Perphenazine concentrations on taurocholate/lecithin colloids using analytical ultracentrifugation, dynamic light scattering, small-angle neutron scattering, nuclear magnetic resonance spectroscopy, coarse-grained molecular dynamics simulations, and isothermal titration calorimetry. Perphenazine impacted colloidal molecular arrangement, structure, and binding thermodynamics in a concentration-dependent manner. At low concentration, Perphenazine was integrated into stable and large taurocholate/lecithin colloids and close to lecithin. Integration of Perphenazine into these colloids was exothermic. At higher Perphenazine concentration, the taurocholate/lecithin colloids had an approximately 5-fold reduction in apparent hydrodynamic size, heat release was less exothermic upon drug integration into the colloids, and Perphenazine interacted with both lecithin and taurocholate. In addition, Perphenazine induced a morphological transition from vesicles to wormlike micelles as indicated by neutron scattering. Despite these surprising colloidal dynamics, these natural colloids successfully ensured stable relative amounts of free Perphenazine throughout the entire drug concentration range tested here. Future studies are required to further detail these findings both on a molecular structural basis and in terms of in vivo relevance.
Modular integration of electronics and microfluidic systems using flexible printed circuit boards (2009)

Microfluidic systems offer an attractive alternative to conventional wet chemical methods with benefits including reduced sample and reagent volumes, shorter reaction times, high-throughput, automation, and low cost. However, most present microfluidic systems rely on external means to analyze reaction products. This substantially adds to the size, complexity, and cost of the overall system. Electronic detection based on sub-millimetre size integrated circuits (ICs) has been demonstrated for a wide range of targets including nucleic and amino acids, but deployment of this technology to date has been limited due to the lack of a flexible process to integrate these chips within microfluidic devices. This paper presents a modular and inexpensive process to integrate ICs with microfluidic systems based on standard printed circuit board (PCB) technology to assemble the independently designed microfluidic and electronic components. The integrated system can accommodate multiple chips of different sizes bonded to glass or PDMS microfluidic systems. Since IC chips and flex PCB manufacturing and assembly are industry standards with low cost, the integrated system is economical for both laboratory and point-of-care settings.
Influence of Mabs on PrPSc Formation Using In Vitro and Cell-Free Systems (2012)

PrP(Sc) is believed to serve as a template for the conversion of PrP(C) to the abnormal isoform. This process requires contact between the two proteins and implies that there may be critical contact sites that are important for conversion. We hypothesized that antibodies binding to either PrP(c)or PrP(Sc) would hinder or prevent the formation of the PrP(C)-PrP(Sc) complex and thus slow down or prevent the conversion process. Two systems were used to analyze the effect of different antibodies on PrP(Sc) formation: (i) neuroblastoma cells persistently infected with the 22L mouse-adapted scrapie stain, and (ii) protein misfolding cyclic amplification (PMCA), which uses PrP(Sc) as a template or seed, and a series of incubations and sonications, to convert PrP(C) to PrP(Sc). The two systems yielded similar results, in most cases, and demonstrate that PrP-specific monoclonal antibodies (Mabs) vary in their ability to inhibit the PrP(C)-PrP(Sc) conversion process. Based on the numerous and varied Mabs analyzed, the inhibitory effect does not appear to be epitope specific, related to PrP(C) conformation, or to cell membrane localization, but is influenced by the targeted PrP region (amino vs carboxy).
Parallel Adaptive Computation of Blood Flow in a 3D “Whole” Body Model (2009)

Due to the systemic nature of the response of the human body to vascular trauma, accurate simulation may require the consideration of larger portions of the vasculature than have previously been modeled. A patient-specific 3D model, composed of 78 arteries extending from the neck to the toes, was constructed to meaningfully represent many of the major arteries in the systemic circulation. Recently developed boundary conditions are applied at the 78 outlets to realistically represent the remaining vasculature not resolved by the 3D domain. The pulsatile blood flow simulation is started on an initial boundary layer mesh with a few million elements which is then adapted to a higher resolution by applying solution-based adaptivity. The effects of the mesh resolution on flow features are studied. Pressure, velocity and wall shear stress results will be presented.
Powertrain Air Intake System Noise Simulation Considering 0D/1D and 3D Numeric Methodologies (2016)

&lt;div class="section abstract"&gt;&lt;div class="htmlview paragraph"&gt;The powertrain air intake system in internal combustion engines have great effect over power and torque, generally it is designed for high volumetric efficiency, however it is as well an important source of noise with effects over the internal comfort of the occupiers of the vehicle and the pass-by noise. It is known that increasing the transversal sections of the ducts of passage is one of the usual ways to increase the volumetric efficiency of the intake process, but on the other hand, this procedure decreases the capacity of acoustical attenuation generating an increase in the radiated noise. We have here a very conflicting situation, which requires a balance or adjustment of these parameters of project. In these situations the utilization of numerical tools are of great value, for they allow to evaluate and optimize the variables with conflicting effects, especially here the acoustical and fluid dynamical performances. Theses simulations can use 0D/1D and/or 3D numerical tools. The 0D/1D simulation is simpler and have less computational cost, with it is possible to evaluate the acoustical and volumetric performance, however with certain limitations. The 3D numerical tools of linear acoustics and CFD allows more detailed results, in a wider range of operation, however with a computational cost way higher. In this paper will be presented comparative results between these numerical technologies as well as the definition of the limitations and frequency range that can be used.&lt;/div&gt;&lt;/div&gt;
Managing Complexity in an Autonomous Vehicle (2006)

Team Tormenta fielded an autonomous vehicle in the DARPA Grand Challenge 2005. Limiting the complexity of the autonomous system design, construction, and testing was crucial in rapidly designing a cost-effective working system. This approach allowed Team Torments. to field a competitive vehicle on a low budget competing in the qualification trials.
Serum Neutralizing Activity of mRNA-1273 against SARS-CoV-2 Variants (2021)

ABSTRACT The emergence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants has led to growing concerns over increased transmissibility and the ability of some variants to partially escape immunity. Sera from participants immunized on a prime-boost schedule with the mRNA-1273 COVID-19 vaccine were tested for neutralizing activity against several SARS-CoV-2 variants, including variants of concern (VOCs) and variants of interest (VOIs), compared to neutralization of the wild-type SARS-CoV-2 virus (designated as D614G). Results showed minimal effects on neutralization titers against the B.1.1.7 (Alpha) variant (1.2-fold reduction compared with D614G); other VOCs such as B.1.351 (Beta, including B.1.351-v1, B.1.351-v2, and B.1.351-v3), B.1.617.2 (Delta), and P.1 (Gamma) showed decreased neutralization titers ranging from 2.1-fold to 8.4-fold reductions compared with D614G, although all remained susceptible to mRNA-1273–elicited serum neutralization.
Supplementary Figure 6 from Dual mTORC1/2 and HER2 Blockade Results in Antitumor Activity in Preclinical Models of Breast Cancer Resistant to Anti-HER2 Therapy (2023)

&lt;p&gt;PDF file, 233KB, In vitro cell death induced by lapatinib and INK-128 of trastuzumab/lapatinib resistant cell lines.&lt;/p&gt;
Continuous on-line partial discharge monitoring of power generators (2002)

Partial Discharge (PD) detection as a measure of defects and weakness in the insulation system of high voltage equipment has always been a matter of importance and interest in high voltage studies. On-line PD monitoring of rotating machines has not been easy because of the large disturbances coupled to the windings and measurement system by different sources such as the power network, slip ring brushes and excitation system thyristors. Since 1989, the High Voltage Engineering Department of ABB Corporate Research in Sweden has been involved in development of a new technique, called INTECH, for on-line detection and localization of partial discharges. The technique is based on the decoupling of the partial discharges by a pair or group of inductive sensors and treatment of the detected signals. This paper especially considers the aspects of application of INTECH to power generators.
Phagocyte-mediated oxidation in idiosyncratic adverse drug reactions (2001)

The drug-metabolizing capacity of the liver is well known but cannot account for most idiosyncratic adverse drug reactions. Of the extrahepatic sources of reactive drug metabolites, the neutrophil has received the most attention because of its vast numbers and robust oxidizing machinery. Many drugs associated with autoimmunity are susceptible to oxidative transformation by the enzymatic action of myeloperoxidase, a protein released into the extracellular environment when neutrophils are activated. Production of the resulting drug metabolites within lymphoid organs maximizes their immune-perturbing effects. Mechanisms proposed for the initiation of drug-induced blood dyscrasias, hypersensitivity reactions, or lupus-like symptoms center around three views: (1) presentation of the implicated compound in the major histocompatibility complex of antigen-presenting cells via direct binding or after processing as a hapten bound to self-macromolecules, (2) direct cytotoxicity, or (3) interference in the development of T-cell tolerance in the thymus. How participation of reactive drug metabolites in these processes might lead to symptomatic disease is discussed.
Electrokinetic wall effect mechanisms and applications (2020)

Under the application of longitudinal electric fields in microchannels, microparticles experience lift forces that push them away from the channel walls and affect their trajectories. At high frequencies (>100KHz) the dielectrophoretic forces dominate and are well understood but at lower frequencies there is little agreement as to the exact nature of the forces, how they are generated and how they vary due to the many different experimental conditions that are used in microfluidics devices. Here we present an experimental study of these mechanisms.
In vitro and In vivo electrochemical characterization of a microfabricated neural Probe (2009)

The electrochemical behavior of neural implants with 50 microm-diameter platinum electrodes was tested during acute implantations in the motor cortex of anesthetized rats. Custom Ag|AgCl reference electrodes were prepared that could be co-implanted with the probes. The results obtained in vivo are compared with in vitro measurements performed in buffered saline solution (PBS) with and without the addition of bovine serum albumin (BSA). The presence of BSA clearly altered the performance of the electrodes which was studied by means of cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), voltage transient measurements (VT) and monitoring of the open circuit potential (OCP). We found that hydrogen gas evolved at 1.22 A/cm(2) in BSA-free PBS whereas in BSA-containing PBS it occurred already at 0.51 A/cm(2).
High Sc Limit of Free Convection at a Vertical Plate With Uniform Flux Condition (1971)

Technical Briefs High Sc Limit of Free Convection at a Vertical Plate With Uniform Flux Condition Jan Robert Selman, Jan Robert Selman Inorganic Materials Research Division, Lawrence Radiation Laboratory, and Department of Chemical Engineering, University of California, Berkeley, Calif. Search for other works by this author on: This Site PubMed Google Scholar John Newman John Newman Inorganic Materials Research Division, Lawrence Radiation Laboratory, and Department of Chemical Engineering, University of California, Berkeley, Calif. Search for other works by this author on: This Site PubMed Google Scholar Author and Article Information Jan Robert Selman Inorganic Materials Research Division, Lawrence Radiation Laboratory, and Department of Chemical Engineering, University of California, Berkeley, Calif. John Newman Inorganic Materials Research Division, Lawrence Radiation Laboratory, and Department of Chemical Engineering, University of California, Berkeley, Calif. J. Heat Transfer. Nov 1971, 93(4): 465-466 (2 pages) https://doi.org/10.1115/1.3449848 Published Online: November 1, 1971 Article history Received: February 1, 1971 Online: August 11, 2010
Coupling and coherent electrical control of two dopants in a silicon nanowire (2012)

Electric control of individual atoms or molecules in a solid-state system offers a promising way to bring quantum mechanical functionalities into electronics. This idea has recently come into the reach of the established domain of silicon technology, leading to the realization of single-atom transistors and to the first measurements of electron spin dynamics in single donors. Here we show that we can electrically couple two donors embedded in a multi-gate silicon transistor, and induce coherent oscillations in their charge states by means of microwave signals. We measure single-electron tunneling across the two donors, which reveals their energy spectrum. The lowest energy states, corresponding to a single electron located on either of the two donors, form a two-level system (TLS) well separated from all other electronic levels. Gigahertz driving of this TLS results in a quantum interference pattern associated with the absorption or the stimulated emission of up to ten microwave photons. We estimate a charge dephasing time of 0.3 nanoseconds, consistent with other types of charge quantum bits. Here, however, the relatively short coherence time can be counterbalanced by fast operation signals (in principle up to 1 terahertz) as allowed by the large empty energy window separating ground and excited states in donor atoms. The demonstrated coherent coupling of two donors constitutes an essential step towards donor-based quantum computing devices in silicon.
Multiple metal-carbon bonds. 33. Some reactions of tungsten methylidyne complexes and the crystal structure of [W2(CPMe3)2(PMe3)4Cl4][AlCl4]2 (1984)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMultiple metal-carbon bonds. 33. Some reactions of tungsten methylidyne complexes and the crystal structure of [W2(CPMe3)2(PMe3)4Cl4][AlCl4]2Steven J. Holmes, Richard R. Schrock, Melvyn Rowen Churchill, and Harvey J. WassermanCite this: Organometallics 1984, 3, 3, 476–484Publication Date (Print):March 1, 1984Publication History Published online1 May 2002Published inissue 1 March 1984https://pubs.acs.org/doi/10.1021/om00081a024https://doi.org/10.1021/om00081a024research-articleACS PublicationsRequest reuse permissionsArticle Views292Altmetric-Citations63LEARN 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 (1)»Supporting Information Supporting Information Get e-Alerts
Modeling of Heat Transfer of a Polypropylene-Based Intumescent System during Combustion (1999)

The modeling of heat transfer during combustion of the intumes cent formulation PP-APP/PER is studied. It is proposed a model based on the as sumption that it exits an intumescent front analogous to the phase change process which can describe the fire behavior of an intumescent material in condi tions of forced combustion.