gebhart/patrepeval huggingface dataset:
TV-Centric Technologies To Provide Remote Areas With Two-Way Satellite Broadband Access (2007)

October 1-2, 2007, Rome, Italy TV-Centric Technologies To Provide Remote Areas With Two-Way Satellite Broadband Access
Characterization of ESR Active Species on Lithium Chloride-Modified Mesoporous Silica (2005)

The surface of mesoporous silica with regular nanometer-sized pores and high surface area has been modified by metal ions or functional groups to introduce specific interactions. We found that ESR active species were formed on lithium chloride (LiCl)-modified mesoporous silica after heat treatment. The structure and the surface properties of LiCl-modified mesoporous silica were characterized by XRD, ESR, nitrogen adsorption, UV-vis-NIR, and TPD. The results suggest that the ESR active species were generated on the surface in response to heat treatment above 673 K. Moreover, it was found for the first time that LiCl-modified mesoporous silica after the heat treatment has reversible adsorption properties for hydrogen under room temperature and atmospheric pressure.
On the Implementation of Multielement Continuum Source Graphite Furnace Atomic Absorption Spectrometry Utilizing an Echelle/CID Detection System (1999)

A continuum source, multielement graphite furnace atomic absorption spectrometer was developed that employed a high-resolution echelle polychromator with charge-injection device (CID) detection. The detection system employed a new device, the CID 38, and camera control unit, the SCM5000E, providing unique new capabilities. A data acquisition and analysis scheme was developed for the prototype system, and the instrument demonstrated detection limits approaching that of commercial line source graphite furnace atomic absorption spectroscopy (GFAAS). However, the performance degrades in the ultraviolet due to decreasing source output.
Integrated Gravity Mapping System (IGMS) Study Program for Aircraft and Land Vehicles. Volume 1. (1982)

Abstract : Results are presented of a 6-month program to analyze and define a gravity mapping system for an aircraft and land vehicle. This approach leads to a highly accurate gravity anomaly mapping system for use on either land vehicles of aircraft which could survey large areas in a very short period of time. Keywords: Gravity gradiometers; Deflection of the vertical.
SIMPLE LASER-DRIVEN, METAL PHOTOCATHODES AS COLD, HIGH-CURRENT ELECTRON SOURCES (1986)

Recent developments in excimer laser design have na?e gear ultraviolet light intensities of several MW/cm pOSSible in unfocused beams. These advances and recent experiments indicate that high-current, simple-metal photoemissive electrqn guns are now feasible. Producing more than 50 A/cm of illuminated 5;thode surface, the guns could operate at vacuums of 10 torr with no complicated system components inside the vacuum enclosure. The electron beam produced by such photo-emission guns would have very low emittance and high brightness. This beam would also closely follow the temporai c:haracteristics of the laser pulse, making fast risetime, ultrashort electron beam pulses pos-sible.
Optical Amplification Efficiency Improvement of Multicore EDFA by Using Turbo Cladding Pumping Scheme (2020)

For C band application, the optical amplification efficiency of cladding pumped multicore EDFA is still problematic as a major part of the pump light is not absorbed in the short doped fiber. In this paper, we study the pump recycling technology. The operation principle is introduced and verified experimentally. Also, fundamental optical amplification performance is characterized. Moreover, feasibility of the application to multicore optical transmission systems is researched.
Dynamics of the Volume Phase Transition of a Hydrogel Membrane of a Microcapsule (2003)

The dynamic processes of the volume phase transition of pH-sensitive hydrogel wall membranes of microcapsules are much different from those of the conventional bulk gels because of a large proton reservoir inside the microcapsule wall membrane and the extremely thin unsustained gel membrane. The time course of the size S of poly(l-lysine-alt-terephthalic acid) microcapsules has been measured in both the swelling and shrinking processes by pH jump. A lag phase and an S-shaped increase in S are observed in the swelling process, whereas a rapid decrease in S is observed in the shrinking process. To explain the characteristic time courses, a simple model is proposed on assumption of linear dependence of the rate of change in the size and in the charge density of the microcapsule membrane against deviations from the respective equilibrium values. The unique time courses of the microcapsule sizes observed are expressed by the theoretical equations. By a fitting of the observed time courses of S to the theoretical equations, two time constants are obtained, each related to the ratio of the elastic force of the gel polymer network to the frictional force and the ionization of the membrane.
Glioblastoma invasion and cooption depend on IRE1α endoribonuclease activity (2015)

IRE1α is an endoplasmic reticulum (ER)-resident transmembrane signaling protein and a cellular stress sensor. The protein harbors a cytosolic dual kinase/endoribonuclease activity required for adaptive responses to micro-environmental changes. In an orthotopic xenograft model of human glioma, invalidation of IRE1α RNase or/and kinase activities generated tumors with remarkably distinct phenotypes. Contrasting with the extensive angiogenesis observed in tumors derived from control cells, the double kinase/RNase invalidation reprogrammed mesenchymal differentiation of cancer cells and produced avascular and infiltrative glioblastomas with blood vessel co-option. In comparison, selective invalidation of IRE1α RNase did not compromise tumor angiogenesis but still elicited invasive features and vessel co-option. In vitro, IRE1α RNase deficient cells were also endowed with a higher ability to migrate. Constitutive activation of both enzymes led to wild-type-like lesions. The presence of IRE1α, but not its RNase activity, is therefore required for glioblastoma neovascularization, whereas invasion results only from RNase inhibition. In this model, two key mechanisms of tumor progression and cancer cell survival are functionally linked to IRE1α.
Integrating CD and Lithographic Process Window analysis with Mask Data Preparation for Subwavelength ICs (2002)

As the industry accelerates the reduction in sub-wavelength device feature sizes, it is necessary that the traditional barriers between design, mask data preparation (MDP), and the lithography process be broken down or eliminated. These processes, which now possess increased levels of complexity and interconnectivity, can no longer work independently but must be linked and all applicable information about the processes propagated upstream. Options associated with phase shift masks, optical proximity correction, increasing constraints for the minimum defect size requirements, improving yield and throughput, etc. have been key to the increased demands placed on the photomask manufacturers. Knowledge of the lithographic performance of a selected option prior to mask build is key to reducing mask cost, improving turn around time and staying on the aggressive path established by the mask user. Integrating CD and lithographic process window analysis with MDP provides a convenient means of helping the mask makers to predict the performance of a mask within the wafer fab. This paper will discuss the integration of CD and lithographic process window analysis tools with CATS mask data preparation software. The benefits of implementing this methodology will be explored and illustrated with data.
An Expeditious Route to 3β,14β-Dihydroxy-5β-androstane-17β-carboxaldehyde (1997)

Abstract An efficient and practical synthesis of 3β,14β-dihydroxy-5β-androstane-17β-carboxaldehyde is described. The key oxidative cleavage of the unsaturated lactone of 3-acetyldigitoxigenin 1 utilises RuO4 as catalytic and NaIO4 as stoichiometric oxidants.
Recruitment of ubiquitin-activating enzyme UBA1 to DNA by poly(ADP-ribose) promotes ATR signalling (2018)

The DNA damage response (DDR) ensures cellular adaptation to genotoxic insults. In the crowded environment of the nucleus, the assembly of productive DDR complexes requires multiple protein modifications. How the apical E1 ubiquitin activation enzyme UBA1 integrates spatially and temporally in the DDR remains elusive. Using a human cell-free system, we show that poly(ADP-ribose) polymerase 1 promotes the recruitment of UBA1 to DNA. We find that the association of UBA1 with poly(ADP-ribosyl)ated protein-DNA complexes is necessary for the phosphorylation replication protein A and checkpoint kinase 1 by the serine/threonine protein kinase ataxia-telangiectasia and RAD3-related, a prototypal response to DNA damage. UBA1 interacts directly with poly(ADP-ribose) via a solvent-accessible and positively charged patch conserved in the Animalia kingdom but not in Fungi. Thus, ubiquitin activation can anchor to poly(ADP-ribose)-seeded protein assemblies, ensuring the formation of functional ataxia-telangiectasia mutated and RAD3-related-signalling complexes.
Internet routing (1989)

Comprising an estimated 60,000 hosts, the DARPA Internet is the largest existing internet. This paper traces the routing information protocols used by Internet gateways to build routing tables that define the paths datagrams traverse as they travel between end systems. We articulate the weaknesses and limitations of the most commonly used routing protocols, including RIP, GGP, and HELLO and examine how the protocols interact with each other and with EGP. Finally, we trace the evolution of routing as the Internet has grown from a single backbone (ARPANET) to its present inclusion of the ARPANET, Milnet, and NSFnet cross-country networks.
Hydrogenation without a Metal Catalyst:  An ab Initio Study on the Mechanism of the Metal-Free Hydrogenase from Methanobacterium thermoautotrophicum (1998)

ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTHydrogenation without a Metal Catalyst: An ab Initio Study on the Mechanism of the Metal-Free Hydrogenase from Methanobacterium thermoautotrophicumJoaquim H. Teles, Stefan Brode, and Albrecht BerkesselView Author Information Institut für Organische Chemie der Universität zu Köln Greinstrasse 4, D-50939 Köln, Germany BASF AG, Ammoniaklaboratorium D-67056 Ludwigshafen, Germany Cite this: J. Am. Chem. Soc. 1998, 120, 6, 1345–1346Publication Date (Web):January 30, 1998Publication History Received11 July 1997Published online30 January 1998Published inissue 1 February 1998https://pubs.acs.org/doi/10.1021/ja972320xhttps://doi.org/10.1021/ja972320xrapid-communicationACS PublicationsCopyright © 1998 American Chemical SocietyRequest reuse permissionsArticle Views409Altmetric-Citations38LEARN 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 SUBJECTS:Chemical reactions,Enthalpy,Hydrogen,Peptides and proteins,Transition states Get e-Alerts
Study of vertical transmission of fowl adenoviruses. (2006)

The vertical transmission of fowl adenoviruses (FAdVs) was studied by polymerase chain reaction (PCR) and virus isolation. Liver, spleen, kidney, and bursa of Fabricius were collected from 60 chicks 1 d old representing progenies hatched to 6 broiler breeder flocks in 6 geographically different premises in Ontario, Canada. The presence of FAdV DNA sequences was detected by PCR with the use of primers specific for the conserved pVI gene of FAdV-9 in 58 (24%) of the 240 samples tested. All samples from 1 flock were negative for FAdV sequences, and only a few samples were positive in 3 flocks, whereas 32% and 72% of the samples from the other 2 flocks were positive. Testing of 1 sample with primers designed to amplify the L1 region of the hexon protein gene and amino acid sequence analysis of the PCR product indicated that the sequences were similar to serotype-8a FAdV sequences. No fowl adenoviruses were isolated in chicken hepatoma cells from any of the 30 samples inoculated. These findings imply that vertical transmission and establishment of latent infection with FAdVs can occur in chickens.
Cross-Linking with Diamine Monomers To Prepare Composite Graphene Oxide-Framework Membranes with Varying d-Spacing (2014)

Three diamine monomers (ethylenediamine, butylenediamine, and p-phenylenediamine) were selected for cross-linking graphene oxide (GO) to prepare composite graphene oxide-framework (GOF) membranes through filtration using a pressure-assisted self-assembly technique. The membranes were applied to separate an ethanol–water mixture by pervaporation. Unmodified GO comprised only hydrogen bonds and π–π interactions, but after cross-linking it with a diamine, attenuated total reflectance–Fourier transform infrared and X-ray photoelectron spectroscopy demonstrated that the diamine was chemically bonded both to GO and the membrane support. Moreover, GO hydrophilicity was substantially altered; water contact angle increased from 24.4° to 80.6° (from cross-linking with an aliphatic structure of diamine to cross-linking with an aromatic structure). Results of X-ray diffraction showed that d-spacing in GOF layers varied from 10.4 to 8.7 Å. For GOFs presoaked in 90 wt % ethanol–water, covalent bonds between the layer and diamine could effectively suppress stretching of d-spacing. Cross-linking with ethylenediamine produced a composite membrane that exhibited a short interlayer d-spacing and delivered an excellent pervaporation performance at 80 °C: permeation flux = 2297 g/(m2 h); water concentration in permeate = 99.8 wt %. The membrane showed stability during a long-term operation at 30 °C for 120 h.
Prevention and Monitoring of Fatigue-Corrosion of Flexible Risers’ Steel Reinforcements (2007)

Flexible pipelines used for oil production on floating platforms are subject to dynamic loads and are designed to ensure no fatigue failure over their service life. Their reinforcing layers are located in a very confined environment called the annular space and are made out of high strength steel wires. If these steel wires are subjected to a wet corrosive environment, corrosion fatigue can become an issue, especially for sour service applications with the presence of H2S and CO2. Over the past years, Flexi France has dedicated a lot of effort not only to predict the composition of the environment in the annular space and the steel wires’ fatigue-corrosion behaviour, but also towards the prevention of corrosion and the monitoring of this annular space. Several innovative solutions recently developed and tested in Flexi France are presented in this paper concerning prevention of annular space flooding by seawater ingress or by diffused water. The paper also presents new designs for integrating monitoring sensors into the pipe structure and corrosion fatigue mitigation methods. Inspection and monitoring methods by integration of sensors or conduits within the pipe structure during its manufacture are now commercially available. These technologies, some of which are already applied on offshore fields, extend the usage limits of high strength steels and increase the fatigue life of dynamic risers. This is of primary importance for demanding applications such as deepwater, high pressure and/or sour service production.
Functional Heterodimerization of Prolactin and Growth Hormone Receptors by Ovine Placental Lactogen (2000)

Although homo- or heterodimerization are common mechanisms for activation of cytokine receptors, cross-talk between two distinct receptors in this superfamily has been never shown. Here we show a physiologically relevant example indicating that such an interaction does occurs, thus raising the hypothesis that heterodimerization between distinct cytokine receptors may be a novel mechanism contributing to the diversity of cytokine signaling. These findings were documented using both surface plasmon resonance and gel filtration experiments and show that ovine placental lactogen (PL) heterodimerizes the extracellular domains (ECDs) of ruminant growth hormone receptor (GHR) and prolactin receptor (PRLR). We also show that PL or PL analogues that exhibit little or no activity in cells transfected with PRLRs and no activity in cells transfected with ovine GHRs exhibit largely enhanced activity in cells cotransfected with both PRLRs and GHRs. Furthermore, chimeric receptors consisting of cytosolic and transmembrane part of ovine GHR or ovine PRLR and ECDs of human granulocyte-macrophage colony-stimulating factor receptor (GM-CSFR) alpha or beta were constructed. Upon transfection into Chinese hamster ovary cells along with reporter luciferase gene and stimulation by GM-CSF, a significant increase in luciferase activity occurred when GM-CSFR-alpha-PRLR and GM-CSFR-beta-GHR or GM-CSFR-alpha-GHR and GM-CSRR-beta-PRLR were cotransfected. In conclusion, we show that ovine PL is capable of functional heterodimerization of GHR and PRLR and that when their cytosolic parts, coupled to the ECD of GM-CSF receptors, are heterodimerized by GM-CSF, they are capable of transducing biological signal.
Microfluidic Devices for Flow-Through Supported Palladium Catalysis on Porous Organic Monolith (2008)

Flow-through microreactors are described, constructed of fused silica capillaries with an internal diameter of 100 µm and glass microchips with a channel dimension of 150 µm and involving the in situ UV-initiated synthesis of a poly(glycidyl methacrylate-co-ethylene dimethacrylate) porous polymer monolith. The monolith is a continuous material covalently bonded to the capillary or chip walls, with good flow-through properties. Epoxide ring-opening through amine attack by 5-amino-1,10-phenanthroline and coordination to dichloropalladium(ii) allows use of the microreactors for Suzuki–Miyaura catalysis. The long-term stability and reliability of the robust chip microreactor is demonstrated by operation for 96 h, exhibiting undiminished reactivity, and very low leaching of palladium.
Monte Carlo simulation of gamma-ray response of BaF2 and CaF2 (2013)

We have employed a Monte Carlo (MC) method to study intrinsic properties of two alkaline-earth halides, namely, BaF2 and CaF2, relevant to their use as radiation detector materials. The MC method follows the fate of individual electron-hole (e-h) pairs and thus allows for a detailed description of the microscopic structure of ionization tracks created by incident γ-ray radiation. The properties of interest include the mean energy required to create an e-h pair, W, Fano factor, F, the maximum theoretical light yield, and the spatial distribution of e-h pairs resulting from γ-ray excitation. Although W and F vary with incident photon energy at low energies, they tend to constant values at energies higher than 1 keV. W is determined to be 18.9 and 19.8 eV for BaF2 and CaF2, respectively, in agreement with published data. The e-h pair spatial distributions exhibit a linear distribution along the fast electron tracks with high e-h pair densities at the end of the tracks. Most e-h pairs are created by interband transition and plasmon excitation in both scintillators, but the e-h pairs along fast electron tracks in BaF2 are slightly clustered, forming nanoscale domains and resulting in the higher e-h pair densities than in CaF2. Combining the maximum theoretical light yields calculated for BaF2 and CaF2 with those obtained for CsI and NaI shows that the theoretical light yield decreases linearly with increasing band gap energy.
P300 Clinical Utility and Control of Variability (1998)

The P300 event-related brain potential (ERP) has been used to study normal aging as well as patient populations with a variety of neurologic and psychiatric disorders. The P300 has demonstrated reasonable success as a means to assess disturbances in cognitive function, and its clinical utility has been enhanced by the identification of factors that contribute to the variability of ERP measurements. In this article, the neuropsychological theory of P300 is reviewed, ways in which this brain potential can be used as a measure of cognitive efficiency are defined, and methodologic issues that must be considered for successful clinical ERP applications are outlined. This approach is then extended to specific recommendations concerning the technical and practical aspects of P300 recording, so that a well-defined normative database can be developed for evaluating individual patients. When appropriate procedures are used, the P300 can provide a highly useful means to quantify human cognitive capability.
Ecological assessment of wastewater on the environment by the example of Khanty-Mansiysk (KhMAO-Yugra) (2021)

Abstract Due to the increase in the population, water consumption increases, and the volume of wastewater increases accordingly. In this regard, an environmental assessment of wastewater, relief, granulometric composition of the city of Khanty-Mansiysk was carried out. Sewerage facilities have been analyzed, technology gaps have been identified. Methods for improving the operation of sewage facilities that will comply with environmental standards in order to remove the negative load on the natural environment are recommended. Water quality is a determining factor in the level of civilization and the manufacturability of production facilities, as well as an indicator of the rational management of territories [1].
Reverse‐Flow Adsorption for Process‐Integrated Recycling of Homogeneous Transition‐Metal Catalysts (2011)

Supramolecular strategies, based on hydrogen bonds and ionic interactions, were investigated as tools for the recovery and recycling of homogeneous transition-metal catalysts by using reverse-flow adsorption (RFA) technology. The association (in solution) and adsorption (on support) of new functionalized host materials and phosphine guest ligands, functionalized with the complementary binding motifs, were fine-tuned for the application of these materials in a RFA reactor. The RFA technology for process-integrated recycling of homogeneous catalysts using these tailor-made phosphine ligands and silica-supported host materials resulted in a stable, semicontinuous catalytic system. Rhodium-catalyzed asymmetric hydrogenation of methyl acetamidoacrylate and asymmetric hydrosilylation of acetophenone were studied as test reactions. Depending on the catalytic process the metal complex could be recycled several times without significant loss in conversion.