gebhart/patrepeval huggingface dataset:
Polystyrene-<i>Block</i>-Poly(ethylene-<i>ran</i>-butylene)-<i>Block</i>-Polystyrene Triblock Copolymer Separators for a Vanadium-Cerium Redox Flow Battery (2017)

A series of polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene (SEBS)-based anion exchange membranes (AEMs) were synthesized via chloromethylation of SEBS followed by quaternization with trimethylamine (TMA). AEMs functionalized with TMA+ cations exhibited high chloride ion conductivity of 33.6 mS/cm at 70°C. A V-Ce RFB employing the SEBS-based AEM as the separator yielded an energy efficiency of 86% at a current density of 50 mA/cm2 with a 10% drop in capacity over 20 charge/discharge cycles. In contrast, a V-Ce RFB using Nafion212 as the separator had an energy efficiency of 80% and a 40% drop in capacity over 20 charge/discharge cycles. The observed capacity fade was primarily due to cation intermixing between the anodic and cathodic compartments – much better permselectivity was obtained with the AEM separator. After 60 charge-discharge cycles (350 hours of operation), the ion exchange capacity and ionic conductivity of the AEM dropped by about 20%. There was no observed change in mechanical properties. The oxidative stability of the AEM was evaluated ex situ by immersion in 1.5 M VO2+ + 3 M H2SO4 for 500 hours - the ionic conductivity remained constant over this timeframe. The chemical and mechanical stability and high conductivity of SEBS-based AEMs make them promising separator candidates for electrode-decoupled RFBs.
The role of cellular cooperation in thromboplastin synthesis. (1983)

Increasing evidence [1, 2, 3] demonstrates the clinical importance of monocyte thromboplastin synthesis in the pathogenesis of thrombosis and disseminated intravascular coagulation. Among the first to describe this was the group of the late F Josso [4, 5]. In addition, monocytes and macrophages appear to contribute to fibrin deposition in inflammatory lesions [6, 7]. Several procoagulant substances have been reported to appear in monocyte cultures. Among these, thromboplastin is the most potent and probably also the most important and well studied. Based as it is on our own work, this brief review will deal only with thromboplastin. It is a phospholipid-protein complex, consisting in human material of one species of protein (apoprotein III) mol. wt. approximately 52,000 surrounded by phospholipids [8] in an optimal molecular ratio of apoprotein:phospholipids of approximately 1:80 [9]. Apoprotein III is an integral membrane glycoprotein which apparently is located mainly on the outside of the plasma membrane. The molecular weight has recently been confirmed in our laboratory by Western blotting, using a monoclonal antibody to apoprotein III developed here (Johnsen, unpublished).
Wireless sensor networks (2003)

Wireless sensor networks (WSNs) consist of large populations of wirelessly connected nodes, capable of computation, communication, and sensing. Sensor nodes cooperate in order to merge individual sensor readings into a high-level sensing result, such as integrating a time series of position measurements into a velocity estimate. The physical time of sensor readings is a key element in this process called data fusion. Hence, time synchronization is a crucial component of WSNs. We argue that time synchronization schemes developed for traditional networks such as NTP [23] are ill-suited for WSNs and suggest more appropriate approaches.
NF- B controls the global pro-inflammatory response in endothelial cells: evidence for the regulation of a pro-atherogenic program (2005)

Activation of the transcription factor NF-kappaB is critical for the tumor necrosis factor-alpha (TNF-alpha)-induced inflammatory response. Here we report the complete gene expression profile from activated microvascular endothelial cells emphasizing the direct contribution of the NF-kappaB pathway. Human microvascular endothelial cell line-1 (HMEC-1) cells were modified to express dominant interfering mutants of the IKK/NF-kappaB signaling module and expression profiles were determined. Our results provide compelling evidence for the virtually absolute dependence of TNF-alpha-regulated genes on NF-kappaB. A constitutively active IKK2 was sufficient for maximal induction of most target genes, whereas a transdominant IkappaBalpha suppressed gene expression. Several genes with a critical role in atherogenesis were identified. The endothelial lipase (EL) gene, a key enzyme involved in lipoprotein metabolism, was investigated more in detail. Binding sites interacting with NF-kappaB in vitro and in vivo were identified and co-transfection experiments demonstrated the direct regulation of the EL promoter by NF-kappaB. We conclude that targeting the IKK/NF-kappaB pathway or specific genes downstream may be effective for the control or prevention of chronic inflammatory diseases such as atherosclerosis.
Manganese Superoxide Dismutase in Cancer Prevention (2013)

To educate and obtain support from our society that cancer is preventable. To combine SOD-based therapeutics with other cancer preventive agents to obtain synergistic effects. To formulate a dietary supplementation-based antioxidant approach for cancer prevention. Lastly, targeting specific populations who are prone to carcinogens, which can trigger oxidative stress as the mechanism of carcinogenesis.
Engineered Disulfide Bond Greatly Increases Specific Activity of Recombinant Murine Interferon-β (1992)

Unlike other species of interferon-beta (IFN-beta) mouse (Mu) IFN-beta has no naturally occurring intramolecular disulfide bond. When expressed in Escherichia coli, MuIFN-beta appears to exhibit instability and low activity. To increase its activity, we engineered a pair of cysteines into recombinant MuIFN-beta to test whether this change would improve its antiviral activity. In the absence of detailed structural data, the optimal placement of cysteines was determined by sequence comparison with other species of IFN-beta. While MuIFN-beta has only a single cysteine (at position 17), other species of IFN-beta have three cysteines, at positions 17, 31, and 141 (numbering based on consensus sequence), a disulfide bond being formed between the latter two residues. Thus, we introduced cysteines into MuIFN-beta at positions 29 and 136, which correspond to positions 31 and 141 of the consensus sequence. When the variant form of MuIFN-beta was expressed in bacteria and purified, we found that the additional cysteines greatly increased the antiviral activity. Further improvement was obtained by replacement of the Cys-17 with a serine. In this manner a specific activity approximately 15-fold that of the wild-type recombinant molecule was achieved.
Imaging and 3D tomographic reconstruction of time-varying, inhomogeneous refractive index fields (2007)

Time varying, inhomogeneous refractive index fields are every-where, from hot air rising above a fire and mirages above hot roads in the summer, to gases flowing from pressurized containers, and mixtures of different liquids. We present a novel method for imaging and volumetric reconstruction of time-varying refractive index fields, based on the Background Oriented Schlieren (BOS) technique developed in the fluid imaging community [Meier 2002].
Homolytic aromatic substitution by heterocyclic free radicals. Reaction of 3‐quinolyl and 8‐quinolyl radicals with aromatic compounds (1975)

Abstract Free radicals obtained from 3‐ and 8‐aminoquinolines were studied in various aromatic substrates. Isomer percent, reaction yields, and overall reactivities towards benzene are recorded.
Studies on electroless nickel–PTFE composite coatings (2005)

Electroless deposition of nickel based composites produces outstanding tribiological behaviour. These composite coatings are formed by addition to the electroless nickel solution of the material to be codeposited, in powder form, and by maintaining it in suspension during the deposition process so that it is incorporated into the deposit. The most commonly used hard dispersed compounds are SiC, diamond powder, alumina, TiC, BN, chromium carbide or WC. Recently, electroless nickel containing PTFE as a composite material has been used because it is uniform, highly adherent, hard wearing, dry lubricating, non-galling, has a lower coefficient of friction and good corrosion resistance properties. The present paper studies the effect of PTFE in an electroless Ni–acid bath on the rate of deposition, incorporation of PTFE and phosphorous content in the deposit, wear and corrosion resistance.
Effects of Binders and Moisture Content on the Disintegration, Hardness and Friability of Paracetamol and Orphenadrine Citrate Tablets (1989)

The effects of binders and moisture content on the disintegration time, friability and hardness of paracetamol and orphenadrine citrate tablets at different storage conditions were investigated. These parameters were determined after one, four and sixteen weeks of storageThe use of starch, ethocel or CMC Na as binders gave unsatisfactory tablets because of their high friability. Unacceptably high disintegration times were obtained, particularly at higher storage temperatures when PVP was used. Capping and yellow spotting observed in gelatin formulations makes this binder unsuitable for use. Methocel granulations yielded satisfactory tablets with acceptable disintegration time, hardness and friability and were unaffected by storage at different conditions of temperature and humidity
A high-speed CSD coefficient filter structure and VLSI implementation (2001)

A new high-speed CSD coefficient filter structure,which is explored through studing BOOTH multiplier, high-speed adder and CSD coefficient filter structures is presented. The completed anti-SINC filter core with this structure occupies 1 .00mm x 0.42 mm of silicon area, and consists of 7500 gates in ALCATEL 0.35um CMOS technology.
Kinetic assessment of breast tumors using high spatial resolution signal enhancement ratio (SER) imaging (2007)

The goal of this study was to investigate the relationship between an empirical contrast kinetic parameter, the signal enhancement ratio (SER), for three-timepoint, high spatial resolution contrast-enhanced (CE) MRI, and a commonly analyzed pharmacokinetic parameter, kep, using dynamic high temporal resolution CE-MRI. Computer simulation was performed to investigate: 1) the relationship between the SER and the contrast agent concentration ratio (CACR) of two postcontrast timepoints (tp1 and tp2); 2) the relationship between the CACR and the redistribution rate constant (kep) based on a two-compartment pharmacokinetic model; and 3) the sensitivity of the relationship between the SER and kep to native tissue T1 relaxation time, T10, and to errors in an assumed vascular input function. The relationship between SER and kep was verified experimentally using a mouse model of breast cancer. The results showed that a monotonic mathematical relationship between SER and kep could be established if the acquisition parameters and the two postinjection timepoints of SER, tp1, tp2, were appropriately chosen. The in vivo study demonstrated a close correlation between SER and kep on a pixel-by-pixel basis (Spearman rank correlation coefficient=0.87+/-0.03). The SER is easy to calculate and may have a unique role in breast tissue characterization.
A Generic Model for Embedding Users' Physical Workspaces into Multi-Scale Collaborative Virtual Environments (2010)

International audience
Scattered primary radiation as an internal standard in X‐ray emission spectrometry: Use in the analysis of copper metallurgical products (1973)

Abstract The use of scattered primary X‐radiation of various wavelengths in the range 0.250 to 1.999 Å has been studied in the analysis of copper, iron, and silicon (as silica) in copper metallurgical products. In the analysis of copper and iron, the use of relatively short wavelength predominantly incoherently‐scattered radiation is superior to the use of background radiation near the analyte emission line, and it is necessary for the scatter wavelength to be shorter than that of a major absorption edge of a major element in the system. The wavelength 0.889 Å is suggested as the optimum for use in the analysis of copper, and one simple calibration equation provides acceptable analysis over the whole range of C Cu from 0 to 42%. Over short ranges wavelengths from 0.362 to 0.889 Å are useful in the analysis of iron; but one single calibration cannot be devised to cover the whole range of C Fe from 0 to 56%. The limited results for silicon as silica are included for completeness.
Practical uses of gibberellins in agriculture and horticulture (1972)

The gibberellins were first isolated in 1939 but it took some twenty years to begin to develop practical uses for them. This was largely because there was no extensive knowledge of the interaction between gibberellins and auxins; in fact, much of the knowledge that has accrued in the last twenty or so years has come from the experimental use of exogenous gibberellins. Thus an empirical approach has simultaneously promoted both practical husbandry and scientific progress.
The continuously rotated cellular reactor (1988)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe continuously rotated cellular reactorJohn B. Grutzner, Edward A. Patrick, Perry J. Pellechia, and Marisol. VeraCite this: J. Am. Chem. Soc. 1988, 110, 3, 726–728Publication Date (Print):February 3, 1988Publication History Published online1 May 2002Published inissue 3 February 1988https://pubs.acs.org/doi/10.1021/ja00211a010https://doi.org/10.1021/ja00211a010research-articleACS PublicationsRequest reuse permissionsArticle Views56Altmetric-Citations3LEARN 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
Protein-Conjugated Nanoparticles from Rapid Expansion of Supercritical Fluid Solution into Aqueous Solution (2003)

The method of rapid expansion of a supercritical solution into a liquid solvent (RESOLV) was applied to the preparation of bovine serum albumin protein-conjugated silver sulfide nanoparticles. The conjugate samples were characterized by using a series of instrumental techniques. The results show that the monodispersed nanoparticles in the conjugates are well-coated directly with the protein. Because the protein undergoes solution pH-dependent association and dissociation, the protein-nanoparticle conjugates also assemble and disassemble with changes in solution pH in a reversible fashion.
Katalytische Erscheinungen an Aerosolen (1949)

Abstract Untersuchung des Wechselspiels von Koagulation und chemischer Reaktion an Aerosolen am Beispiel von Ruß in Flammengasen: Scheinbare Beschleunigung der Reaktion von Ruß mit Wasserdampf durch feste nickelhaltige Kontakte, Nachweis, daß nicht der feste Kontakt katalytisch wirkt, sondern Nickeldampf, der vom Kontakt ins Gas geliefert wird. Katalytische Beeinflussung der gleichen Reaktion durch verschiedene Salze, die in kolloidverteiltem Zustand den Flammengasen zugesetzt wurden und deren Wirkung vermutlich auf einer Behinderung der Koagulation der Rußteilchen beruht.
Soft-Tissue Repair of Myelomeningocele Defects Using Bilateral Latissimus Dorsi and Trapezius Musculocutaneous Flaps (1987)

An urgent closure of myelomeningocele defects was carried out in 82 newborns using latissimus and/or trapezius musculocutaneous advancement flaps. A three-layer closure of skin, muscle, and fascia was achieved in a single stage without a flank skin graft. All of the wounds healed within a two-week period and no late breakdown of the wound occurred during the eight-year period of study. The urgent closure maximized the neurological salvage and facilitated early cerebrospinal fluid shunting by preventing both infection and neural desiccation. This report represents the largest number of sequentially treated myelomeningocele defects without a major wound healing problem or death. The advancement musculocutaneous flap closure is safe, simple, and effective and is recommended as the preferred method for closure of the myelomeningocele defect.
A comparison of trellis shaping schemes for controlling the envelope of a bandlimited PSK-signal (2002)

Compares several modulation schemes that employ trellis shaping to control the envelope fluctuations of a bandlimited 8-PSK signal. The goal is to reduce the distortions introduced by nonlinearities in the transmission path. The considered schemes differ in rate and constraint length of the convolutional encoder, which is the basis of the shaping process. Additional coding of the least significant bit compensates the shaping loss. Thus, bit error rates comparable to that of conventional QPSK are achieved. The results show that even shaping schemes with very low complexity provide the redundancy required to sufficiently influence the symbol transitions.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Membrane permeation-controlled transdermal delivery system design. Influence of controlling membrane and adhesive on skin permeation of isosorbide dinitrate. (1990)

A membrane permeation-controlled transdermal delivery system (MC-TDS) of isosorbide dinitrate (ISDN), a model drug, was prepared from polyvinyl alcohol aqueous gel containing the drug, a membrane consisting of ethylene-vinyl acetate copolymer membrane and acrylic adhesive (EV-a). The permeability of ISDN through the EV-a membrane was 2.5 times higher than that through excised hairless rat skin. The ratio of plasma concentration of ISDN after application of MC-TDS on stripped (damaged) skin relative to intact skin was lower than that after application of Frandol tape-S, a marketed ISDN TDS, which suggests that the EV-a membrane might work as a control membrane for overall delivery rate of ISDN to the body. When MC-TDS stored at 30 degrees C for 13.5-48h was applied to the damaged skin, however, the initial plasma concentration of ISDN was very much higher than the expected therapeutic level and was not controlled by the EV-a membrane. The initial high plasma concentration of ISDN after application of the stored MC-TDS on the damaged skin was due to migration of ISDN from the reservoir to the adhesive during storage at 30 degrees C. The migration of drugs into the adhesive might be an important problem in developing efficient MC-TDS.
Power and Influence?: A Commentary on 'New Culture' and Its Role in Shaping Political Views (2008)

Identifying precise sources of political influence in Fiji has always been difficult. Tradition, provincialism and religion have all been identified as major factors. This commentary, based primarily on ongoing research for a pilot study to be published later, shows that aspects of what can be deemed as 'new culture' in Fiji are also an important tool for analyzing influence. Accordingly, the media - as a corner stone of this 'new culture' - should also be understood to be one of the major influences on political viewpoints in Fiji.
Facile Synthesis and Characterization of Fe/FeS Nanoparticles for Environmental Applications (2011)

Multicomponent nanoparticles containing two or more different types of functionalities show unique physical and chemical properties, leading to significantly enhanced performance. In this study, we have developed a new one-pot method to prepare Fe/FeS nanoparticles using dithionite at room temperature. The FeS precipitates on the Fe surface are formed by the interaction between dissolved iron species and hydrogen sulfide, one of the decomposition products of dithionite in solution. The resulting Fe/FeS nanoparticles have high surface area, good electrical conductivity, and strong magnetic responsivity. In addition, the Fe/FeS shows a much higher reactivity toward contaminants than the pure Fe nanoparticles. The above synthesized nanoparticles are successfully applied for the rapid removal of trichloroethylene (TCE) from water. The study reveals that Fe/FeS nanoparticles are a promising candidate for the efficient removal of pollutants.
Composition and properties of petroleum (1981)

This textbook has four main parts. Part one deals with the composition of petroleum, natural gas, and oil field waters. Part two is on analysis which covers separation of crude oils, characterization of fractions, and structural group analysis. Part three discusses the properties of petroleum and natural gas, their liquid phase behavior, compressibility and shrinkage, flow behavior of liquids in the pore space, interfacial behavior, and the forces. The final section is on the classification of petroleum natural gas and oil field waters. This is a translated version of the German text and contains a glossary with Germany translation of terms. 150 references. (ATT)
Characterization of Sodium‐Dependent [<sup>3</sup>H]GBR‐12935 Binding in Brain: A Radioligand for Selective Labelling of the Dopamine Transport Complex (1986)

High-affinity and saturable binding sites for the diphenyl-substituted piperazine derivative [3H]GBR-12935 have been characterized in crude synaptosomal membranes prepared from rat brain. The specific binding of [3H]GBR-12935 is sodium-dependent and is unevenly distributed among various brain regions, with the highest concentration of binding sites being found in the corpus striatum and nucleus accumbens. Sodium-dependent [3H]GBR-12935 binding in all other brain areas was 10% or less of the binding found in the striatum. The affinity of [3H]GBR-12935 for binding sites in the striatum is increased in the presence of Na+ but other cations, including K+, Ca2+, or Mg2+, inhibit specific binding. There is an excellent correlation (r = 0.96, p less than 0.01) between the potencies of a series of drugs in inhibiting [3H]GBR-12935 binding to striatal membranes and their potencies in inhibiting [3H]3,4-dihydroxyphenylethylamine ([3H]dopamine) uptake in synaptosomes. Agonists and antagonists of other neurotransmitter receptor or drug recognition sites have little or no effect on specific [3H]GBR-12935 binding to striatal membranes. In addition, prior intracerebroventricular administration of 6-hydroxydopamine results in a decrease in the number of specific [3H]GBR-12935 binding sites in the striatum. These data indicate that [3H]GBR-12935 is a selective radioligand of the presynaptic dopamine transport complex in brain.