gebhart/patrepeval huggingface dataset:
Efficient Synthesis of Low-Profile Angularly-Stable and Polarization-Independent Frequency-Selective Absorbers With a Reflection Band (2014)

A fast and efficient synthesis procedure for a new class of low-profile frequency selective electromagnetic absorbers with well-defined absorption and reflection bands as well as steep selectivity between the two is proposed. One contribution of this work lies with the combined use of nonresonant subwavelength capacitive and inductive arrays, which leads to low-profile polarization-insensitive and angularly stable designs. Another novelty stems from the use of rigorous synthesis techniques that enable efficiently selecting the cutoff frequencies, reflectivity level, and skirt selectivity for an arbitrary order of the absorption response. Significantly, here we investigate for the first time the out-of-band characteristics of flat absorbers and demonstrate designs which, at frequencies lower than the absorption band, present high reflectivity with a flat reflection phase. Beyond traditional applications, such as stealth, the combination of a well-defined absorption band with such out-of-band reflection properties makes the proposed frequency-selective absorbers pertinent for dual-band satellite-communication antenna reflectors with congruent beams in transmit and receive bands, where the ratio of 1:1.5 between the two bands is normally required.
Anomalous neutron Compton scattering in Nb hydride: Indications of proton correlations (1999)

Neutron Compton scattering probes properties of matter at time scales of the order of 10−16-10−15 s. Very strong anomalies in the cross-sections for protons were observed for scattering on NbHx and NbHxDy. The effective proton cross-section was found to vary with the time of observation (first used as a parameter in the present experiments) being reduced by 30% at times around 10−16 s but reaching its conventional value for times larger than 2·10−15 s. No conventional explanation for this anomaly (which indicates some kind of very short-lived correlations) is known. A tentative explanation is that during such short time intervals, nearby protons are quantum correlated (even at ambient temperatures) in such a manner that their neutron cross-sections are modified.
Network Simplification: the Gaussian N-Relay Diamond Network (2010)

We consider the Gaussian $N$-relay diamond network, where a source wants to communicate to a destination through a layer of $N$-relay nodes. We investigate the following question: What fraction of the capacity can we maintain by using only $k$ out of the $N$ relays? We show that in every Gaussian $N$-relay diamond network, there exists a subset of $k$ relays which alone provide approximately a fraction $\\frac{k}{k+1}$ of the total capacity. The result holds independent of the number of available relay nodes $N$, the channel configurations and the operating SNR. The approximation is within $3\\log N+3k$ bits/s/Hz to the capacity.
A High S/N Ratio Object Extraction CMOS Image Sensor with Column Parallel Signal Processing (2005)

A new complementary metal oxide semiconductor (CMOS) image sensor with a capability for noise reduction, column-parallel analog to digital (A/D) converters, a capacity for signal processing for object extraction every approximately 1 ms and a high-quality frame signal output every 1/60 s has been developed. The sensor pixel circuit is composed of a photodiode, a signal readout circuit with noise reduction and sample-hold functions. The sensor is equipped with column-parallel A/D converters and arithmetic logic units (ALU). Three feature values for object extraction, such as color difference, color intensity and texture, are first calculated, and motion is detected using the inter frame differences of these feature values. The calculations of these feature values are simplified so as to be implemented by compact ALU. The size of pixel, A/D converter and ALU are small enough to be able to incorporate them into practical sensor chip.
Isolation and characterization of detergent-solubilized human HLA-DR transplantation antigens (1979)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIsolation and characterization of detergent-solubilized human HLA-DR transplantation antigensLars Klareskog, Lena Tragardh, Lars Rask, and Per A. PetersonCite this: Biochemistry 1979, 18, 8, 1481–1489Publication Date (Print):April 17, 1979Publication History Published online1 May 2002Published inissue 17 April 1979https://pubs.acs.org/doi/10.1021/bi00575a015https://doi.org/10.1021/bi00575a015research-articleACS PublicationsRequest reuse permissionsArticle Views29Altmetric-Citations28LEARN 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-Alertsclose Get e-Alerts
Enhanced Degradation of TCE on a Superfund Site Using Endophyte-Assisted Poplar Tree Phytoremediation (2017)

Trichloroethylene (TCE) is a widespread environmental pollutant common in groundwater plumes associated with industrial manufacturing areas. We had previously isolated and characterized a natural bacterial endophyte, Enterobacter sp. strain PDN3, of poplar trees, that rapidly metabolizes TCE, releasing chloride ion. We now report findings from a successful three-year field trial of endophyte-assisted phytoremediation on the Middlefield-Ellis-Whisman Superfund Study Area TCE plume in the Silicon Valley of California. The inoculated poplar trees exhibited increased growth and reduced TCE phytotoxic effects with a 32% increase in trunk diameter compared to mock-inoculated control poplar trees. The inoculated trees excreted 50% more chloride ion into the rhizosphere, indicative of increased TCE metabolism in planta. Data from tree core analysis of the tree tissues provided further supporting evidence of the enhanced rate of degradation of the chlorinated solvents in the inoculated trees. Test well groundwater analyses demonstrated a marked decrease in concentration of TCE and its derivatives from the tree-associated groundwater plume. The concentration of TCE decreased from 300 μg/L upstream of the planted area to less than 5 μg/L downstream of the planted area. TCE derivatives were similarly removed with cis-1,2-dichloroethene decreasing from 160 μg/L to less than 5 μg/L and trans-1,2-dichloroethene decreasing from 3.1 μg/L to less than 0.5 μg/L downstream of the planted trees. 1,1-dichloroethene and vinyl chloride both decreased from 6.8 and 0.77 μg/L, respectively, to below the reporting limit of 0.5 μg/L providing strong evidence of the ability of the endophytic inoculated trees to effectively remove TCE from affected groundwater. The combination of native pollutant-degrading endophytic bacteria and fast-growing poplar tree systems offers a readily deployable, cost-effective approach for the degradation of TCE, and may help mitigate potential transfer up the food chain, volatilization to the atmosphere, as well as direct phytotoxic impacts to plants used in this type of phytoremediation.
Supplementary Table 1 from Combined EGFR/MEK Inhibition Prevents the Emergence of Resistance in <i>EGFR</i>-Mutant Lung Cancer (2023)

&lt;p&gt;Supplementary Table 1. List of cell lines used in this study.&lt;/p&gt;
ROUTE/DASH IP Streaming-Based System for Delivery of Broadcast, Broadband, and Hybrid Services (2016)

The delivery of digital television services over broadcast channels using the MPEG-2 transport stream (TS) is a well-established concept. Despite the success of this technology, the advances and success of Internet protocol (IP)-based delivery models with browser-centric media endpoints that combine broadband and broadcast technologies as well as new service requirements have resulted in alternatives to the MPEG-2 TS. These IP-based approaches are considered essential to maintaining the success of broadcast-centric television services. This paper discusses an IP centric approach which is respectful of clean layering and combines the over the top and the broadcast worlds. Central to this approach is a protocol named real-time object delivery over unidirectional transport (ROUTE), which is based IETF protocols such as layered coding transport over user datagram protocol. The dynamic adaptive streaming over HTTP format is used for both broadband and broadcast delivery. HTTP is used as the broadband delivery protocol, and ROUTE is used as the broadcast delivery protocol. It is demonstrated that the ROUTE-based approach is a lean and powerful media delivery method optimized for streaming media and non-real time media delivery with available application layer forward error correction. Thanks to its merits, this approach has been incorporated into the advanced television systems committee 3.0 design.
Recent Advances in the Development of Microwave‐Enhanced Radiolabeling Procedures (2005)

Abstract For Abstract see ChemInform Abstract in Full Text.
New oil-in-water magnetic emulsion as contrast agent for in vivo magnetic resonance imaging (MRI) (2013)

International audience
Interaction of formaldehyde with a water-tolerant frustrated Lewis pair (2017)

A facile complexation of formaldehyde with the water-tolerant frustrated Lewis pair (FLP) B(C<sub>6</sub>F<sub>5</sub>)<sub>3</sub>/PtBu<sub>3</sub> and its Al-analog under ambient conditions is reported. Unprecedented formaldehyde adducts 1, 2 and 4 have been identified and crystallographically characterized.
Hydrogen Powered Airplanes, an exploration of possible architectures leveraging boundary layer ingestion and hybridization (2022)

View Video Presentation: https://doi.org/10.2514/6.2022-1025.vid This study addresses the design of tube-and-wing, turbofan, hydrogen powered passenger transport airplanes from a top-level conceptual approach. The integration of liquid hydrogen fuel systems in the airplane is modeled in a multidisciplinary framework in order to rank the different possible architectures according to overall technical feasibility and performances. If we exclude the Cryoplane layout which has been already studied in the 2000s, we identified mainly three realistic possibilities to store important volume of hydrogen in a classical tube-and-wing layout : in the rear fuselage, within under-wing pods or within piggy-back tank. In this study, we assume that the piggy-back tank is a separated tapered shape attached on top of the fuselage for safety reasons. Adding external tanks to a tube-and-wing configuration also brings additional drag and weight. The possibility to recover some penalty by installing boundary layer ingesting pusher fans on the tail cones of the different tapered bodies of each configuration is analyzed in both contexts of pure thermal propulsive architecture or partial turbo-electric architecture. It appears that boundary layer ingestion is likely to improve significantly the performances in case of external tanks. The feasibility limit of each configuration is discussed according to geometrical constraints and its performances are compared with those of a classical kerosene airplane designed with the same requirements. Finally, a short sensitivity analysis illustrates the effect of technological parameters associated with liquid hydrogen storage and fuel cells integration.
ChemInform Abstract: CHLORIERUNG VON N‐ALKYL‐CARBONSAEUREAMIDEN (1970)

Abstract Die bei Temperaturen zwischen 40 und 130°C durchgeführte, photochemische Chlorierung der Carbonsäureamide (I) führt zu den N‐Acyl‐imidchloriden (II) (Ausbeute 60‐90%), dagegen die der im N‐Alkylrest verzweigten Säureamide (III) zu den unter Feuchtigkeitsausschluß beständigen Acylketiminen (IV).
Tuning Geometry of SWCNTs by CO2 in Floating Catalyst CVD for High‐Performance Transparent Conductive Films (2018)

Abstract Optimized geometry of single‐walled carbon nanotubes (SWCNTs) is vital to high‐performance transparent conductive films (TCFs). Herein, the geometry of SWCNTs, i.e., tube diameter, bundle length, and bundle diameter, are successfully tuned by introducing carbon dioxide (CO 2 ) into floating catalyst chemical vapor deposition (FC‐CVD), where carbon monoxide (CO) is used as a carbon source and ferrocene as a catalyst precursor. Both tube diameter and bundle length increase with an increment of CO 2 concentration, and the yield of SWCNTs can be significantly promoted with the appropriate amount of CO 2 . The role of CO 2 in this behavior is further rationalized as enhancing CO decomposition or carbon dissolution into catalysts. The TCFs based on SWCNTs with optimized geometry by CO 2 exhibit improved performance up to 86.8 Ω sq −1 at 90% transmittance after AuCl 3 doping, achieving about 50% reduction of sheet resistance compared to the TCFs without CO 2 . The use of CO 2 for directly tuning growth of SWCNTs blazes a new trail in the field of SWCNT based TCFs.
Treatment-related Myelodysplastic Syndrome After Chemotherapy for Childhood Low-grade Astrocytoma (2006)

Karajannis, Matthias A. MD; Lyden, David C. MD, PhD; Khakoo, Yasmin MD; Dunkel, Ira J. MD Author Information
Fluorous Tin Hydrides:  A New Family of Reagents for Use and Reuse in Radical Reactions (1999)

Eight members of a new family of highly fluorinated (fluorous) tin hydrides have been synthesized and studied as reagents for radical reactions. Tin hydrides of the general formulas [Rf(CH2)n]3SnH and [Rf(CH2)n]Me2SnH have been prepared where Rf is C4F9, C6F13, C8F17, or C10F21 and n is 2 or 3. These reagents are highly soluble in fluorinated solvents, and partition coefficients between perfluorohexanes and several organic solvents have been measured. The reagents are generally useful for reductive radical reactions and hydrostannation reactions that would typically be conducted with tributyltin hydride. Stoichiometric and catalytic procedures have been developed, and both feature very easy separation of the tin products from the organic products by convenient liquid−liquid or solid−liquid extractions. The tin reagents are recovered from reactions in high yields and are routinely reused. Rate constant measurements suggest that the fluorous tin hydrides are about as reactive as (or in some cases, slightly more reactive than) tributyltin hydride. The reagents show excellent potential for large-scale application in “green” (environmentally friendly) processes. In addition, they are useful for combinatorial and parallel synthesis applications both as reagents and as scavengers in phase-switching procedures.
Type I FCC antiferromagnets in a magnetic field: a realisation of the q=3- and q=4-state Potts models (1982)

It is suggested that phase transitions induced by a magnetic field H//(111) in certain type I FCC antiferromagnets provide a physical realisation of the q=3- and q=4-state Potts models. The (H, T) phase diagram associated with these antiferromagnets for a field lying in the (110) plane is studied using mean field approximation and renormalisation group calculations in d=- epsilon dimensions. The phase diagram exhibits a critical and two first-order surfaces connected by lines to tricritical and polycritical points.
Selective Modification of Opal Photonic Crystals Using Atomic Layer Deposition (2006)

We report on 3D opal photonic crystal modification by atomic layer deposition (ALD). Alumina ALD was used to coat silica opals with conformal films and hence tune the position and intensity of the Bragg peak.
Evaluaciones heurísticas para decisiones de accesibilidad: una revisión sistemática de la literatura (2023)

Cada vez son más las personas que utilizan la tecnología a diario para comunicarse y acceder a la información, incluidas las personas mayores y las personas con discapacidad. Las tecnologías de apoyo, también llamadas ayudas técnicas, son recursos de accesibilidad e inclusión que proporcionan un mayor grado de autonomía y asistencia a las personas que tienen algún grado de dificultad para utilizar los recursos en su contacto con entornos reales y virtuales. El objetivo de este estudio es investigar las percepciones sobre la evaluación heurística de la accesibilidad en el software mediante la realización de una revisión sistemática de la literatura que cubre los últimos 5 años. Esto comenzó con un total de 8548 artículos publicados que están indexados en las bases de datos Scopus y Web of Science. Se elaboraron doce preguntas de investigación relevantes que fueron respondidas de acuerdo con los resultados encontrados en el conjunto final de artículos. Se crearon dos grupos de palabras clave para ayudar en la búsqueda de artículos y se aplicó un proceso de filtrado a los resultados de las búsquedas. La investigación muestra, por medio de figuras y tablas, evidencia sobre el crecimiento de los artículos científicos en el área. Se enumeran los autores principales y las revistas que publican sobre la evaluación de la accesibilidad del software, al igual que las respuestas a las preguntas sobre qué modelos evaluativos, heurísticas, métricas, limitaciones, tecnologías de asistencia y audiencias objetivo son los más citados en los artículos publicados. Este estudio también analiza la co-citación de las referencias y fuentes bibliográficas de parejas. La investigación mostró evidencia de que no existe un consenso general sobre el uso de un modelo único para evaluar la accesibilidad, pero que las pautas WCAG del W3C son las fuentes más utilizadas para referenciar heurísticas y métricas en estudios de este tipo. También se observó que la mayoría de los estudios no se centran en las tecnologías de asistencia, sino que se utilizan ampliamente para apoyar las decisiones en los sitios web.
A Multi-Purpose Test Station to Characterize Fast Neutron Detectors for the Transient Reactor Test Facility (TREAT) Fuel Motion Monitoring System (2017)

The Transient Reactor Test Facility (TREAT) at Idaho National Laboratory is an aircooled, graphite-moderated reactor designed to evaluate reactor fuels and structural materials under conditions that simulate various types of transient overpower and under-cooling situations in a nuclear reactor. Fuel meltdowns, metal-water reactions, thermal interaction between overheated fuel and coolant, and the transient behavior of ceramic fuel for high-temperature systems can be studied. A key instrument that monitors fuel motion as these events take place is t he fast neutron hodoscope. The hodoscope is designed to allow for pre-, during-, and post-transient imaging of fuel in a test loop in the center of the reactor's core. The preferred technique for imaging is detection of fast neutrons produced by fission in the test fuel, travelling unmoderated through a core slot and then a multi-slot collimator to a 360detector array collinear to the collimator channels. Due to the age of the instrument, a refurbishment of the hodoscope's fast neutron detection capability is necessary. Described here is a Multi-Purpose Test Station (MPTS) that was designed to simultaneously qualify and characterize up to eight photo-multiplier tubes using a distributed light source. The MPTS also provides a means to characterize up to eight fast neutron detector assemblies consisting of ZnS(Ag) scintillators coupled to photomultiplier tubes, using a radiologic source.
Electrically Conductive Metallomacrocyclic Assemblies (1985)

The design, synthesis, and study of electrically conductive molecular and polymeric substances constitute a new scientific endeavor involving the interaction of chemists, physicists, and materials scientists. The strategies, developments, and challenges in these two closely related fields are analyzed via a class of materials that bridges both: assemblies of electrically conductive metallomacrocycles. It is seen that efforts to rationally synthesize tailored, "metal-like" molecular arrays lead logically to structure-enforced polymeric assemblies of linked molecular subunits such as metallophthalocyanines. The properties of these assemblies and fragments thereof provide information on the relationship between atomic-level local architecture, electronic structure, and macroscopic transport properties. Electrcally conductive, processable polymeric materals also follow from these results.
Simulating demand participation in market operations (2009)

Demand response and dynamic pricing programs are emerging in greater numbers as policy makers look for higher efficiencies and new mechanisms to integrate distributed resources into system operations. The behavior of demand-side resources (including distributed generation, storage, and load), their interaction with the power system, and their operating characteristics under different electric market scenarios raise many questions for system operators, market operators, and regulators. Computer simulation provides a powerful tool for investigating these issues. This paper discusses the use of GridLab-D as simulation environment to model the behavior of distributed resources in detail such that resources interact in new market environments while observing the physical constraints of system operation. GridLab-D provides an open source platform for integrating demand-side models with power system models and market operation models. The flexibility of this environment will be discussed as well as some of the findings emerging from having this simulation capability.
Resonance Raman Study of the Binding of the Anticancer Drug Amsacrine to DNA (1994)

The binding of amsacrine [4′-(9-acridinylamino)methanesulfon- m-anisidide] to calf thymus DNA was studied by UV-visible and resonance Raman spectroscopy. A shift of the UV-visible absorption band of amsacrine at 434 to 442 nm together with a decrease in the intensity of this band is observed upon amsacrine-DNA binding. The resonance Raman spectrum of DNA-bound amsacrine shows a general slight decrease in intensity relative to the spectrum of the free species. The significant decrease in intensity of the bands at 1165, 1265, and 1380 cm −1 upon binding to DNA is attributed to the formation of a single amsacrine-DNA species. The assignment of these bands (1165, 1265, and 1380 cm −1 ), which was based upon a previous normal coordinate analysis (NCA) and molecular neglect of diatomic overlap (MNDO) calculation, and the observed lack of shift in the band positions upon binding are consistent with intercalation being the major binding mode of amsacrine, as inferred previously by other techniques.