gebhart/patrepeval huggingface dataset:
Isolation from the Mediterranean Stolonifern Coral <i>Sarcodictyon roseum</i> of Sarcodictyin C, D, E, and F, novel diterpenodic alcohols esterified by (<i>E</i>)‐ or (<i>Z</i>)‐N(1)‐methylurocanic acid. Failure of the carbon‐skeleton type as a classification criterion (1988)

Abstract It is shown here that the stoloniferan coral Sarcodictyon roseum of east Pyrenean waters contains four novel diterpenoids, sarcodictyin C ((−) ‐3 ), D ((−) ‐4 ), E ((+)‐ 5 ), F ((+)‐ 6 ), which are related to sarcodictyin A ( = (−)‐(4 R ,4a R ,7 R ,10 S ,11 S ,12a R ,1 Z ,5 E ,8 Z ‐7,10‐epoxy‐3,4,4a,7,10,11,12,12a‐octahydro‐7‐hydroxy‐6‐(methyoxycarbonyl)‐1,10‐dimethyl‐4‐(1‐methylethyl)‐benzocyclodecen‐11‐yl ( E )‐ N 1 ‐methylyrocanate; ((−)− 1 ), previously isolated from the same coral. Sarcodictyin C ((−) ‐3 ) and D ((−) ‐4 ) and the 3α‐hydroxy and 3α‐acetoxy derivatives of (−) ‐1 ), sarcodictyin E ((+) ‐5 ) is the ( Z )‐urocanate isomer of (−) ‐3 ), and sarcodictyin F ((+) ‐6 ) is the 1α‐hydroxy‐2‐ene isomer of (−) ‐3 . In all cases, the nine‐membered ring is locked, and the molecule stabilized, by the urocanic appendage; when this is removed in MeOH/KOH, the C(11)–O − function is free to attack at C(5), and retro ‐condensations then lead to the ring‐contracted butenolides 11 (from (−) ‐3 ) or 10 (from(−) ‐1 ) with extrusion of the hydroxyfuran nucleus ( Scheme 3 ). Under the same conditions, with (−) ‐3 , the C(3)‐O − group competitively attacks at C(5), the hydroxyfuran nucleus is expelled, and aldehyde 14 is formed. Peculiarly, in the reaction of (−) ‐3 with MeOD/KOD, the ring‐contracted butenolide 17 contains D at the 4′‐ax position. The sarcodictyins are unique in these chemical properties, not shared by the cladiellanes which have the same C‐skeleton.
Deposition kinetics of SiO2 film (1981)

The deposition mechanism for chemical vapor deposition glassy SiO2 films using SiH4, O2, and N2 mixtures has been studied. With an increasing PO2, the deposition rate increases in the lower PO2 region, while it decreases in the higher PO2 region. The results were analyzed on the basis of the Langmuir-Hinshelwood surface reaction mechanism. A rate equation was derived. It was found that two molecules of adsorbed SiH4 and one atom of dissociatively adsorbed O2 react on the surface. In the increasing region, the rate constant for surface reaction and adsorption coefficients for SiH4 and O2 were obtained by optimizing the parameters in the rate equation. The activation energy of the surface reaction and the heat of adsorption for SiH4 and O2 were obtained as 10±2, 7±1, and 9.5±2 kcal/mol, respectively. In the decreasing region, adsorption coefficients changed away from those in the increasing region, resulting in an abrupt decrease in deposition rate with PO2.
Integration Methodology For Oil-Free Shaft Support Systems: Four Steps to Success (2010)

Since its founding, NASA has been dedicated to the advancement of aeronautics and space science. The NASA Scientifi c and Technical Information (STI) program plays a key part in helping NASA maintain this important role. The NASA STI Program operates under the auspices of the Agency Chief Information Offi cer. It collects, organizes, provides for archiving, and disseminates NASA’s STI. The NASA STI program provides access to the NASA Aeronautics and Space Database and its public interface, the NASA Technical Reports Server, thus providing one of the largest collections of aeronautical and space science STI in the world. Results are published in both non-NASA channels and by NASA in the NASA STI Report Series, which includes the following report types: • TECHNICAL PUBLICATION. Reports of completed research or a major signifi cant phase of research that present the results of NASA programs and include extensive data or theoretical analysis. Includes compilations of signifi cant scientifi c and technical data and information deemed to be of continuing reference value. NASA counterpart of peer-reviewed formal professional papers but has less stringent limitations on manuscript length and extent of graphic presentations. • TECHNICAL MEMORANDUM. Scientifi c and technical fi ndings that are preliminary or of specialized interest, e.g., quick release reports, working papers, and bibliographies that contain minimal annotation. Does not contain extensive analysis. • CONTRACTOR REPORT. Scientifi c and technical fi ndings by NASA-sponsored contractors and grantees. • CONFERENCE PUBLICATION. Collected papers from scientifi c and technical conferences, symposia, seminars, or other meetings sponsored or cosponsored by NASA. • SPECIAL PUBLICATION. Scientifi c, technical, or historical information from
Nanoclusters of MoO3−x embedded in an Al2O3 matrix engineered for customizable mesoscale resistivity and high dielectric strength (2013)

We have synthesized a material consisting of conducting metal oxide (MoO3−x) nanoclusters embedded in a high-dielectric-strength insulator (Al2O3) matrix. The resistivity of this material can be customized by varying the concentration of the MoO3−x nanoclusters. The Al2O3 protects the MoO3−x from stoichiometry change, thus conserving the number of carriers and maintaining a high dielectric strength. This composite material is grown by atomic layer deposition, a thin film deposition technique suitable for coating 3D structures. We applied these atomic layer deposition composite films to our 3D electron-optical micro electrical mechanical systems devices and greatly improved their performance.
Modelling of a symmetrical bipolar monolithic bidirectional switch (2009)

The purpose of this paper is to introduce a new concept of symmetrical power bipolar junction transistor for appliances applications with low forward voltage (< 1 V). Design and static simulations are discussed as well as the potential electrical impact of silicon hydrophobic direct wafer bonding used to realize such a device. Simulations results, for a nominal current of 5 A and a breakdown voltage of 500 V, are compared with existent solutions.
The Fundamentals of Thin Film Resistive Technology for the Production of Ultra-stable Resistors and Networks (1985)

The paper describes the physical phenomena which influence the electrical and mechanical characteristics of low temperature coefficient, high stability thin metal resistive films. Emphasis is placed on the Matthiensen and Arrhenius rules in respect of resistivity and time-temperature stabilities. The phenomena outlined are highly dependent on the deposition methods used and film properties are discusssed in terms of the film formation kinetics, substrates, and deposition technologies. The production of thin metal film resistive films based on these principles readily achieves temperature coefficients of &lt;5 ppm/°C over the temperature range −55°C to + 155°C with load stress stabilities of &lt;300 ppm with full dissipation, 155°C, 2000 hours, which is as good as bulk nickel-chromium alloy foil.
Speed and position estimation of brushless DC motor in very low speeds (2004)

The paper proposes a method to detect and control the speed and the position of a BLDC motor with a low resolution position encoder in very low speeds of several rad/sec. The low resolution encoder could be the Hall effect sensor that has a resolution of 60 electrical degrees maximum, according to the pole number of the motor. The proposed algorithm used a Kalman filter (KF). The position and the current are sampled. The algorithm was simulated on MATLAB/spl copy/, and the simulation results were valuable.
Replacement of portal vein during pancreatectomy for carcinoma. (1975)

Three patients are described in whom the portal vein, surrounded but not penetrated by pancreatic carcinoma, was resected and replaced by an expanded Teflon (Gore-Tex) tube. One patient, who has survived 32 months without recurrence of disease, had a radiographically patent graft at 2 and 17 months after operation. A second survivor has a patent graft at 8 months. The third patient died 10 days after operation with an open prosthesis. Excision of involved portal vein during pancreatoduodenectomy for carcinoma of the pancreas is justified in the absence of metastases. Vein grafting is the best means of portal vein reconstruction. Gore-Tex appears to be a suitable prosthesis when the portal vein must be sacrificed. Its clinical success in terms of patency substantiates previous experience in experimental animals.
Newly elected fellows of AGU for 2000 (2000)

The Fellows Committee met on January 29, in Los Angeles, California, and elected the following members as Fellows for the year 2000
Hydrothermal Isometric Tension Curves from Different Connective Tissues. Role of Collagen Genetic Types and Noncollagenous Components (1983)

Variations in hydrothermal isometric tension (HIT) were recorded in tendons, ligaments, skin, blood vessels, nerves, palatal mucosa, lungs, muscles, cartilages, demineralized bones and dentine from donors of different ages and species. The curves obtained during a linear rise in temperature from 37 degrees C to 100 degrees C at a rate of 1.15 degrees C/min were classified into three major families, A, B and C, depending on whether these curves displayed an early maximum, two shoulders or a late maximum. The ratio of heat-labile to heat-stable cross-links in the tissue's collagen network was shown to determine the type of curve obtained, but the genetic types of collagen in the tissue and the amount and quality of its noncollagenous components were not important in this respect. These results are discussed in the light of the accepted view that HIT variations are due to the rubber-elastic properties of gelatin.
Transactional workflow for telecommunication service management (1996)

Summary form only given. As workflow management systems become more complex and critical to an organisation's performance, there is an opportunity for a new generation of workflow management products to be developed that would greatly increase the scope of target application areas. The key areas of extensions to workflow management systems include the use of transactional semantics to increase reliability. Traditional transaction processing technology cannot be used directly for workflow management since applications in workflow management are different from the data oriented applications, such as funds transfer in banking applications. Customised workflow definition and management capability is required to capture business requirements and rules. This paper discusses the requirements and characteristics of transactional workflow management, examines applications of transactional workflow for telecommunication service management, and addresses architectural issues of transactional workflow and its role in the telecommunication service management platform.
Chemokine release by neutrophils in chronic obstructive pulmonary disease (2011)

Neutrophils are among the first cells to arrive at the site of injury. Chemokines secreted by neutrophils affect the migration of both neutrophils and other inflammatory cells, such as monocytes. It has been reported that LPS-induced release of IL-8 (CXCL-8) by neutrophils is amplified by neutrophil-derived TNF-α. We hypothesize that chemokine release by neutrophils is altered in chronic obstructive pulmonary disease (COPD) compared with healthy controls and that TNF-α may be involved in this alteration. Peripheral blood neutrophils isolated from smokers with COPD (n = 12), smokers without COPD (n = 12) and healthy, non-smokers (n = 12) were stimulated with LPS, TNF-α or organic dust. Anti-TNF-α Ab (infliximab) was used to study the effect of neutrophil-derived TNF-α. Release of CXCL-8, macrophage inflammatory protein-1 α (MIP-1α, CCL-3), monocyte chemotactic protein-1 (MCP-1, CCL-2) and TNF-α was measured. Neutrophils spontaneously released CXCL-8, CCL-2 and CCL-3. Inhibition of TNF-α reduced the spontaneous release of CXCL-8 and CCL-3. Stimulation with LPS and organic dust increased the release of CXCL-8 and CCL-3 (but not CCL-2) which was reduced by inhibition of TNF-α. In the COPD group, inhibition of TNF-α failed to inhibit the release of LPS-induced CXCL-8. The role of neutrophils as cytokine and chemokine producers was confirmed. Neutrophil-derived TNF-α contributed to the release of chemokines after stimulation with LPS and organic dust, as the response was inhibited by infliximab. In the COPD group, infliximab did not significantly inhibit the release of CXCL-8, suggesting that the role of TNF-α is altered in COPD.
Jet Flow on Stepped Spillways (1995)

The authors provided interesting data on stepped spillway flows. The writer would like to add some information on flow resistance of skimming flows and discuss the energy dissipation on stepped chutes. It will be shown that the author's results are not dissimilar with results previously obtained by other researchers (table A1).
A new class of fluorescent-dots: long luminescent lifetime bio-dots self-assembled from DNA at low temperatures (2013)

Quantum-dots (QDs) have fuelled up intensive research efforts over the past two decades. Nevertheless, currently developed two classes of fluorescent QDs, colloidal semiconductor QDs and carbonaceous QDs suffer from either toxicity or short luminescence lifetime. Here, we report a new class of fluorescent bio-dots that are derived from DNA via self-assembly at low temperatures down to 80°C, which has an optical bandgap of 3.4 eV, and in particular possesses strong photoluminescence with a much longer luminescence lifetime (τ₁ = 10.44 ns) than the carbonaceous QDs (τ₁ < 0.5 ns). It is discovered that it is the interactions of base pair cytosines with each other to form sp² carbon-like centers as luminescence centers or chromophores for the photoluminescence. The use of bio-dots in cell imaging with strong photoluminescence signal and good biocompatibility demonstrates great potentials of broad biological and optoelectronic applications.
Artificial Pancreas Using a Personalized Rule-Based Controller Achieves Overnight Normoglycemia in Patients with Type 1 Diabetes (2013)

A highly precise personalized pRBA obtains nocturnal normoglycemia, without significant hypoglycemia, in T1DM patients. There appears to be no clear benefit of CL over prandial bolus on the postprandial glycemia.
Epitaxial Growth of GaAs with  (  C 2 H 5 ) 2GaCl and AsH3 in a Hotwall Reactor (1991)

The metalorganic vapor phase epitaxy (MOVPE) of in a hotwall reactor has been investigated using the growth precursors diethylgalliumchloride [, ], , and the carrier gases or He. The growth temperature range of was investigated at reactor pressures of 0.10–10 torr. Selective growth was achieved on masked substrates at temperatures of 400°C and above throughout the reactor pressure range of investigation. Significant differences in growth characteristics of the hotwall reactor were observed with respect to a coldwall reactor: the growth rate was reaction rate‐limited only at very low temperatures and a precipitous drop in growth rate was observed at high temperatures. At low growth temperatures these differences are ascribed to a change in the growth reaction rate due to distinct group III ‐growth species in the two reactors configurations, and at high growth temperatures to a shift in the group V growth species from to in the HW reactor. The growth mechanism is essentially independent of the carrier gas. The electrical characteristics of the deposited were n‐type throughout the range of growth parameters and demonstrated a minimum in the electron concentration of at 550–600°C. Secondary ion mass spectroscopy identified the dominant impurity concentrations in the grown material at high growth temperatures to be Si, and at low growth temperatures, S. These and additional Sn and Zn impurities are attributed to the source material. Quantitative agreement was found between the electron concentration and the sum of the S and Si impurity concentrations.
Beyond just keeping hands on the wheel: Towards visual interpretation of driver hand motion patterns (2014)

Observing hand activity in the car provides a rich set of patterns relating to vehicle maneuvering, secondary tasks, driver distraction, and driver intent inference. This work strives to develop a vision-based framework for analyzing such patterns in real-time. First, hands are detected and tracked from a monocular camera. This provides position information of the left and right hands with no intrusion over long, naturalistic drives. Second, the motion trajectories are studied in settings of activity recognition, prediction, and higher-level semantic categorization.
Identification of novel allergens of <i>Aspergillus fumigatus</i> using immunoproteomics approach (2007)

The immunoproteomic approach applied to the analysis of culture filtrate proteins resulted in the identification of several candidate allergens, many of them novel, contributing to the catalogue of Afu allergenic proteins, which would facilitate improved serodiagnosis for allergic aspergillosis. In addition, the immunoreactivity of these proteins observed among the patients with ABPA may be potentially useful for its serodiagnosis and opens up further opportunities for the development of personalized immunotherapeutics for patients with ABPA.
Applying Deep Learning to the Cache Replacement Problem (2019)

Despite its success in many areas, deep learning is a poor fit for use in hardware predictors because these models are impractically large and slow, but this paper shows how we can use deep learning to help design a new cache replacement policy. We first show that for cache replacement, a powerful LSTM learning model can in an offline setting provide better accuracy than current hardware predictors. We then perform analysis to interpret this LSTM model, deriving a key insight that allows us to design a simple online model that matches the offline model's accuracy with orders of magnitude lower cost.
Synthesis and Characterization of Antibacterial and Temperature Responsive Methacrylamide Polymers (2006)

A new methacrylamide monomer (MAMP) containing a pyridine moiety was synthesized by reacting methacrylic anhydride and 3-(aminomethyl) pyridine. The monomer was homopolymerized in 1,4-dioxane and copolymerized with N-isopropyl acrylamide in DMF at two different compositions using AIBN as an initiator. The pyridine groups of the homopolymer and copolymers were reacted with various bromoalkanes containing 12, 14, and 16 carbon alkyl chains to obtain the polymers with pendant pyridinium groups. The monomer and polymers were characterized by elemental analysis, NMR, FTIR, SEC, TGA, and DSC. The neutral and quaternized copolymers with low MAMP content were water-soluble and showed temperature-responsive behavior in aqueous solutions. The lower critical solution temperatures (LCSTs) of these polymers varied between the temperatures of 25 and 42 °C. The LCST of quaternized copolymers were higher than that of the neutral copolymer because they were more hydrophilic. The LCST of the quaternized copolymers decreased with an increase in the alkyl chain length on the pyridinium group because the copolymers became more hydrophobic this way. The antibacterial activities of water-soluble copolymers were investigated against Staphylococcus aureus and Escherichia coli using the broth dilution and spread plate methods, whereas the water-insoluble polymers were tested for the antibacterial activity against the same types of bacteria using the shaking flask method. The quaternized water-soluble copolymers showed excellent antibacterial activities against both types of bacteria, whereas the neutral polymers and quaternized water-insoluble homopolymers and copolymers were not active.
Emerging Technology of Diamond Thin Films (1989)

RETURN TO ISSUEPREVNewsNEXTEmerging Technology of Diamond Thin FilmsPETER K. BACHMANN and RUSSELL MESSIERView Author Information Philips Research Laboratories, Aachen, West Germany Pennsylvania State UniversityCite this: Chem. Eng. News 1989, 67, 20, 24–38Publication Date (Print):May 15, 1989Publication History Published online10 November 2010Published inissue 15 May 1989https://pubs.acs.org/doi/10.1021/cen-v067n020.p024https://doi.org/10.1021/cen-v067n020.p024newsACS PublicationsCopyright © 1989 AMERICAN CHEMICAL SOCIETYArticle Views26Altmetric-Citations125LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access options SUBJECTS:Carbon,Materials Get e-Alerts
Cloud point phenomena in mixtures of anionic and cationic surfactants in aqueous solution (1990)

The interaction between anionic and cationic surfactants was investigated by means of surface tension, conductivity, and nuclear magnetic resonance. It was found that a strong interaction exists between anionic and cationic surfactants and the mixed surfactant has a hydrophobic property. The phase diagram has been determined as a function of temperature for the waterstearyltrimethylammonium chloride (STAC)‐sodium laurate (NaL). The Krafft point rose remarkably in equimolar mixtures for this system. The phase diagram has been determined as a function of temperature for the STAC‐sodium‐N‐lauroyl‐N‐methyl‐β‐alanine (NaLMA) system. The liquid‐liquid phase separation phenomenon was observed around an equimolar mixture. It can be identified with the cloud point, which is shown by nonionic surfactants. This phenomenon seemed to be caused by the decreased solute‐solvent interaction (i.e., dehydration of the amido group contained in NaLMA molecule) as the temperature is raised. The decreasing effect of protein (ovalbumin) denaturation was observed in the high area of the mole fraction of cationic surfactant in the cationic‐anionic system. We believe that this is due to the remarkable lowering of the monomer concentration by the formation of a hydrophobic complex.
Food anaphylaxis (2000)

Food anaphylaxis is now the leading single cause of anaphylactic reactions treated in emergency departments in Westernized countries. In the US, it is estimated that there are 29,000 anaphylactic reactions to foods treated in emergency departments and 125-150 deaths each year. Peanuts, tree nuts, fish and shellfish account for the vast majority of severe food anaphylactic reactions. Immunopathogenic mechanisms responsible for food anaphylaxis may differ somewhat from other forms of anaphylaxis, since elevation of serum tryptase is rarely seen following food anaphylactic reactions. Education regarding the strict avoidance of food allergens, the early recognition of anaphylactic symptoms, and the early use of self-injectable epinephrine remain the mainstays of therapy. However, clinical trials are now underway for the treatment of patients with peanut anaphylaxis utilizing anti-IgE antibody therapy and novel immunomodulatory therapies utilizing 'engineered' recombinant proteins, overlapping peptides, and immunostimulatory deoxyoligonucleotide sequences are being tested in animal models of anaphylaxis.
391. A rearrangement of o-carbamyl derivatives of diphenyl ether (1938)

B. T. Tozer and S. Smiles, J. Chem. Soc., 1938, 2052 DOI: 10.1039/JR9380002052