gebhart/patrepeval huggingface dataset:
Hybrid soliton pulse source using a silica waveguide external cavity and Bragg reflector (1991)

We describe the first results for a hybrid soliton pulse source, combining a mode-locked semiconductor laser with a silica waveguide external cavity and Bragg reflector. Near transform limited pulses at 1.55 μm have been obtained at pulse widths and repetition rates compatible with practical soliton transmission system. A novel new mechanism of cavity length detuning is described, which gives the device an extended operating frequency range over which useful mode locking occurs.
Degradation of polyethylene during extrusion. II. Degradation of low‐density polyethylene, linear low‐density polyethylene, and high‐density polyethylene in film extrusion (2003)

Abstract The degradation of different polyethylenes—low‐density polyethylene (LDPE), linear low‐density polyethylene (LLDPE), and high‐density polyethylene (HDPE)—with and without antioxidants and at different oxygen concentrations in the polymer granulates, have been studied in extrusion coating processing. The degradation was followed by online rheometry, size exclusion chromatography, surface oxidation index measurements, and gas chromatography–mass spectrometry. The degradations start in the extruder where primary radicals are formed, which are subject to the auto‐oxidation when oxygen is present. In the extruder, crosslinking or chain scissions reactions are dominating at low and high melt temperatures, respectively, for LDPE, and chain scission is overall dominating for the more linear LLDPE and HDPE resins. Additives such as antioxidants react with primary radicals formed in the melt. Degradation taking place in the film between the die orifice, and the quenching point is mainly related to the exposure time to air oxygen. Melt temperatures above 280°C give a dominating surface oxidation, which increases with the exposure time to air between die orifice and quenching too. A number of degradation products were identified—for example, aldehydes and organic acids—which were present in homologous series. The total amount of aldehydes and acids for each number of chain carbon atoms were appeared in the order of C5>C4>C6>C7≫C2 for LDPE, C5>C6>C4>C7≫C2 for LLDPE, and C5>C6>C7>C4≫C2 for HDPE. The total amounts of oxidized compounds presented in the films were related to the processing conditions. Polymer melts exposed to oxygen at the highest temperatures and longest times showed the presence dialdehydes, in addition to the aldehydes and acids. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 91: 1525–1537, 2004
Spin-Driven Jahn-Teller Distortion in a Pyrochlore System (2000)

The ground-state properties of the spin-1 antiferromagnetic Heisenberg model on the corner-sharing tetrahedra, the pyrochlore lattice, are investigated. By breaking up each spin into a pair of 1/2-spins, the problem is reduced to the equivalent one of the spin-1/2 tetrahedral network in analogy with the valence bond solid state in one dimension. The twofold degeneracy of the spin singlets of a tetrahedron is lifted by a Jahn-Teller mechanism, leading to a cubic to tetragonal structural transition. It is proposed that the present mechanism is responsible for the phase transition observed in the spin-1 spinel compounds ZnV2O4 and MgV2O4.
Formylation of Estrogens (1989)

Reimer-Tiemann formylations of oestradiol and oestrone were investigated and, whilst substitution was effected under certain conditions to give mixtures of 2- and 4-formyloestrogens, yields were very low and the method was unsuitable for preparative purposes. Regioselective methods were developed and 2-formyloestradiol was conveniently prepared from oestradiol by formylation of the lithio derivative of the bis(methoxymethyl) ether and removal of the rotecting groups with hydrochloric acid. 4-Formyloestradiol was prepared by a sequence of reactions starting with the methoxyethyl ether of 4-bromooestradiol, then metal-halogen interconversion, formylation with N-methylformanilide, and removal of the protecting group. A number of related derivatives, including 2-formyloestriol, were prepared.
A low complexity architecture for the cell search applied to the LTE systems (2012)

Cell search is a crucial process in the synchronization procedure for the 3 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">rd</sup> Generation Partnership Project (3GPP) Long Term Evolution (LTE) system. In this paper, a high-speed, low-complexity and reliable architecture is proposed for both steps of cell search: sector ID and cell ID group detection. For the sector ID detection, two novel methods, sign-bit reduction and wise resource sharing, are proposed. In addition, for the cell ID group detection, we proposed an algorithm based on the Maximum Likelihood Sequence Detection (MLSD) called “sign-bit MLSD”. Simulations show that the proposed methods result in more than 90% reduction in area compared to the state-of-the-art. We designed and synthesized the architecture using a 130nm CMOS technology, resulting in 0.11 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> core area and estimated power consumption of 1.4mW.
Synthesis and Properties of Functional Poly(vinylpyrrolidinone) Hydrogels for Drug Delivery (2008)

Poly (N-vinylpyrrolidinone) has many uses in biotechnology and medicine. Here we review our recent work on materials based on this polymer that have applications in drug release or as potential mitogens. The synthesis of crosslinked PNVP hydrogels and highly branched polymers is covered.
Mapping Third Party Call Control and Session Handoff in SIP Mobility to Content Sharing and Session Handoff in the Web Browsing Context (2009)

This paper presents a new service to Web browsing. The service, referred to as session handoff and content sharing between two Web browsers, requires extending the capabilities of existing Web browsers by integrating a session initiation protocol (SIP) stack into them. An optional SIP application server (SIP AS) that co-ordinates HTTP session mobility between Web browsers is introduced. In addition, third-party call control and session handoff in SIP session mobility are successfully mapped to content sharing and session handoff between two Web browsers, respectively. While content sharing refers to the ability to view same Web resource on two Web browsers, session handoff refers to the ability to migrate a Web session between two Web browsers. Until now, SIP had only been integrated into application servers. Integrating a SIP stack into a Web browser has helped improve collaboration and mobility among the Web users. In addition, it encourages developing adaptive user agent clients (UACs) that can serve two or more purposes. In this case, a Web browser can also be used as a SIP client to make voice calls and be extended to perform other SIP functionalities.
Designing a custom DSP circuit using VHDL (1990)

The application of VHDL (VHSIC hardware description language) in the design and development of a custom DSP (digital signal processing) complex-to-magnitude circuit is described. The circuit produces the magnitude of a complex number using an approximation algorithm. The target implementation is a bit-serial architecture using a set of primitive operators for DSP design. The algorithm and architecture are investigated at the word level using the real-number type, and the results are applied to the bit level. It is found that VDHL provides strong support and clear documentation for each level of abstraction.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
The Biosynthesis of Ergosterol (1984)

Abstract The present state of knowledge of ergosterol biosynthesis is reviewed briefly in order to provide a contextual framework for the following papers which deal with its inhibition, the compounds that cause this inhibition, and their mode of action. The paper concentrates upon the post‐squalene segment of the process as it occurs in fungi because the commercially important inhibitors of ergosterol biosynthesis are fungicides that block steps within that process.
Substantial expression of luteinizing hormone-releasing hormone (LHRH) receptor type I in human uveal melanoma (2013)

Uveal melanoma is the most common primary intraocular malignancy in adults, with a very high mortality rate due to frequent liver metastases. Consequently, the therapy of uveal melanoma remains a major clinical challenge and new treatment approaches are needed. For improving diagnosis and designing a rational and effective therapy, it is essential to elucidate molecular characteristics of this malignancy. The aim of this study therefore was to evaluate as a potential therapeutic target the expression of luteinizing hormone-releasing hormone (LHRH) receptor in human uveal melanoma. The expression of LHRH ligand and LHRH receptor transcript forms was studied in 39 human uveal melanoma specimens by RT-PCR using gene specific primers. The binding charachteristics of receptors for LHRH on 10 samples were determined by ligand competition assays. The presence of LHRH receptor protein was further evaluated by immunohistochemistry. The expression of mRNA for type I LHRH receptor was detected in 18 of 39 (46%) of tissue specimens. mRNA for LHRH-I ligand could be detected in 27 of 39 (69%) of the samples. Seven of 10 samples investigated showed high affinity LHRH-I receptors. The specific presence of full length LHRH receptor protein was further confirmed by immunohistochemistry. A high percentage of uveal melanomas express mRNA and protein for type-I LHRH receptors. Our results support the merit of further investigation of LHRH receptors in human ophthalmological tumors. Since diverse analogs of LHRH are in clinical trials or are already used for the treatment of various cancers, theseanalogs could be considered for the LHRH receptor-based treatment of uveal melanoma.
Hybridization of RNA to double-stranded DNA: formation of R-loops. (1976)

RNA can hybridize to double-stranded DNA in the presence of 70% formamide by displacing the identical DNA strand. The resulting structure, called an R-loop, is formed in formamide probably because of the greater thermodynamic stability of the RNA-DNA hybrid when it is near the denaturation temperature of duplex DNA. The rate of R-loop formation is maximal at the temperature at which half of the duplex DNA is irreversibly converted to single-stranded DNA (the strand separation temperature of tss) of the duplex DNA and falls precipitously a few degrees above or below that temperature. This maximal rate is similar to the rate of hybridization of RNA to single-stranded DNA under the same conditions. At temperatures above the tss the rate is proportional to the RNA concentration. However, at temperatures below tss the rate of R-loop formation is less dependent upon the RNA concentration. Once formed, the R-loops display considerable stability; the formamide can be removed and the DNA can be cleaved with restriction endonucleases without loss of R-loop structures.
Behavior of Sputtered Indium–Tin–Oxide Thin Film on Poly-Ethylene Terephthalate Substrate Under Stretching (2011)

In this work, two different sheet resistances, 100 and 60 Ω per square of DC-Magnetron sputtered indium tin oxide (ITO) thin film on poly ethylene terephthalate (PET) substrate were stretched up to 15% of the original length under three different strain rates, 0.01, 0.1, and 1.0 min <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-1</sup> . The cracks development during stretching was monitored using optical microscope. Two types of cracks were observed: in the first type, cracks initiated perpendicularly to the tensile load and propagated towards the edge of the sample, which was observed at 4% strain for both sheet resistances and different strain rates. In the second type, cracks initiated from the first type cracks and propagated perpendicularly to it towards the next original crack. The cracks intensity for both types of cracks was investigated. The intensity of both cracks type increases with the strain and sheet resistance. The electrical resistance was measured every 1% strain during stretching. The relative electrical resistance change (Δ <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">R</i> / <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">R</i> <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> ) was plotted against strain at different strain rates. It could be concluded that, the relative electrical resistance change under high strain rate is higher at the beginning of the stretching process, but after a certain strain, the relative electrical resistance change under the lower strain rate accelerated till the film becomes non-conductive while the relative electrical resistance change under high strain rate is in acceleration process until reaching non-conductive condition. Analysis of Variance (ANOVA) results showed that the strain and the sheet resistance are significant factors on the relative electrical resistance change at 95% confidence level. The strain rate was not significant factor in the range considered. No two factor interactions are significant as well.
Sensors for Harsh Environments by Direct-Write Thermal Spray (2004)

High-temperature thermocouple sensors for harsh environments have been fabricated using thermal spray technology with excellent performance demonstrated. Concepts for strain sensors fabricated with thermal spray technology are also being developed. This work reports on functional high-temperature thermocouples and strain gauge concepts fabricated using thermal spray processing.
New cation-exchange material based on a sulfonated 3,4-ethylenedioxythiophene monomer (1998)

The electrochemical oxidation, in aqueous medium, of a 3,4-ethylenedioxythiophene monomer functionalized by a sulfonate group exhibiting cation-exchange properties, allows the synthesis of a new type of water-soluble material. In order to synthesize in water, by oxidative electropolymerization, polymer films of controlled thickness containing attached sulfonate groups, we have investigated the polymerization of the functionalized monomer in the presence of the unsubstituted one without supporting electrolyte. Using an equimolar mixture (0.01 mol/l) of both monomers, copolymers exhibiting cation exchange abilities have been synthesized. As an example, th easy incorporation of hexaamine-ruthenium(III) into one of these copolymers is briefly reported.
Edith M. Coulter Publications (1963)

News| December 01 1963 Edith M. Coulter Publications Jeanne Van Nostrand Jeanne Van Nostrand Search for other works by this author on: This Site PubMed Google Scholar California Historical Society Quarterly (1963) 42 (4): 370. https://doi.org/10.2307/25155607 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter LinkedIn Tools Icon Tools Get Permissions Cite Icon Cite Search Site Citation Jeanne Van Nostrand; Edith M. Coulter Publications. California Historical Society Quarterly 1 December 1963; 42 (4): 370. doi: https://doi.org/10.2307/25155607 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu nav search search input Search input auto suggest search filter All ContentCalifornia History Search This content is only available via PDF. Copyright 1963 The California Historical Society Article PDF first page preview Close Modal You do not currently have access to this content.
The Data Transmission System Design between Intelligent Multi-serial Port and Ethernet Based on ARM and FPGA (2012)

According to the semi-physical simulation experiment needs of UAV flight control system, the serial numbers was needed to expand, the intelligent communication system is implemented between serial port and Ethernet based on ARM processor, and serial number is expanded based on FPGA, which can achieve eight serial port expansion. TCP/IP protocol is cutted in software design, UDP communication is realized by the RL-ARM real-time library between processors and PC. The results show that this scheme can make the system is simple and reliable, high transmission efficiency, low cost features.
Attention-Based Autism Spectrum Disorder Screening With Privileged Modality (2019)

This paper presents a novel framework for automatic and quantitative screening of autism spectrum disorder (ASD). It is motivated to address two issues in the current clinical settings: 1) short of clinical resources with the prevalence of ASD (1.7% in the United States), and 2) subjectivity of ASD screening. This work differentiates itself with three unique features: first, it proposes an ASD screening with privileged modality framework that integrates information from two behavioral modalities during training and improves the performance on each single modality at testing. The proposed framework does not require overlap in subjects between the modalities. Second, it develops the first computational model to classify people with ASD using a photo-taking task where subjects freely explore their environment in a more ecological setting. Photo-taking reveals attentional preference of subjects, differentiating people with ASD from healthy people, and is also easy to implement in real-world clinical settings without requiring advanced diagnostic instruments. Third, this study for the first time takes advantage of the temporal information in eye movements while viewing images, encoding more detailed behavioral differences between ASD people and healthy controls. Experiments show that our ASD screening models can achieve superior performance, outperforming the previous state-of-the-art methods by a considerable margin. Moreover, our framework using diverse modalities demonstrates performance improvement on both the photo-taking and image-viewing tasks, providing a general paradigm that takes in multiple sources of behavioral data for a more accurate ASD screening. The framework is also applicable to various scenarios where one-to-one pairwise relationship is difficult to obtain across different modalities.
Synthesis of the novel anti-leukaemic tetrahydrocyclopenta[b]benzofuran, rocaglamide and related synthetic studies (1992)

Two approaches to the rocaglamide tricyclic skeleton are described. The first, which employs an unusual intramolecular dithianyl anion to carbonyl addition reaction, provides access to α-phenyl rocaglamide analogues. The second route involves an intramolecular keto aldehyde pinacolic coupling in the key step and can be used for the preparation of a whole range of rocaglamide analogues possessing both α- and β-phenyl substituents. A total synthesis of rocaglamide, in racemic form, is described using this second approach. The synthetic route commences with phloroglucinol, an inexpensive and readily-available starting material, and takes only 8/9 steps giving an overall yield of >6%. The synthesis of 1-epi-rocaglamide 29b is also described.
A benchmark of NonStop SQL on the debit credit transaction (1988)

NonStop SQL is an implementation of ANSI SQL on Tandem Computer Systems Debit Credit is a widely used industry-standard transaction. This paper summarizes a benchmark of NonStop SQL which demonstrated linear growth of throughout from 14 to 208 Debit Credit transactions per second as the hardware grew from 2 to 32 processors. The benchmark also compared the performance of NonStop SQL to the performance of a record-at a time file system interface
Charge Trapping in Imidazolium Ionic Liquids (2009)

Room-temperature ionic liquids (ILs) are a promising class of solvents for applications ranging from photovoltaics to solvent extractions. Some of these applications involve the exposure of the ILs to ionizing radiation, which stimulates interest in their radiation and photo- chemistry. In the case of ILs consisting of 1,3-dialkylimidazolium cations and hydrophobic anions, ionization, charge transfer and redox reactions yield charge-trapped species thought to be radicals resulting from neutralization of the constituent ions. Using computational chemistry methods and the recent results on electron spin resonance (ESR) and transient absorption spectroscopy of the ionized ILs, we argue that electron localization in the imidazolium ILs yields a gauche dimer radical cation with the elongated C(2)-C(2) bond. This species is shown to absorb in the near-infrared and the visible regions and accounts for the observed ESR spectra. We suggest that the excess electron in these aromatic ILs is localized as such a dimeric ion, and consider the chemical implications of this attribution. We also suggest that three-electron N-N bonding with the formation of a dimer radical anion occurs for amide anions, such as dicyanamide, when the parent anion traps holes; steric hindrance prevents the analogous reaction for bis(triflyl)amide anion. For another anion of practical importance, bis(oxalato)borate, a pathway involving the elimination of CO(2) is suggested. Together, these results indicate the unanticipated tendency of the ILs to localize primary charges as radical ions as opposed to neutral radicals. Thus, it appears that secondary chemistry in the ionized ILs may be dominated by radical ion reactions, similarly to the previously studied conventional organic liquids, depending on the composition of the IL.
Effect of growth rate and substrate limitation on the composition and structure of the cell wall of <i>Saccharomyces cerevisiae</i> (1967)

1. A study was made of the composition and structure of walls isolated from yeast grown in continuous culture at different rates, under three conditions of glucose limitation in which the concentrations of glucose and ammonium sulphate in the medium and the oxygen-transfer rate in the culture were varied, and one condition of NH(4) (+) limitation. 2. The contents of total glucan and total mannan in the walls were relatively little affected by the growth rate under any of the four sets of conditions. The phosphorus and protein contents of walls from yeast grown under each of the four conditions increased as the growth rate was decreased. Walls from yeast grown under NH(4) (+) limitation contained only half as much protein as walls from cells grown under glucose limitation. The proportion of lipid was greatest in walls from yeast grown under NH(4) (+) limitation. 3. A procedure was devised for fractionating isolated walls, based on the ease with which the glucan and mannan were extracted with water and with hot and cold 6% (w/v) potassium hydroxide solution. The percentage of glucan, mannan, protein and phosphorus in each of the fractions was affected by the rate of growth and by the nature of the substrate limitation. 4. The beta-fructofuranosidase activities of yeast grown under glucose limitation increased as the growth rate was lowered, but decreased at very low growth rates. The effects at low growth rates were probably due to repression of enzyme synthesis by residual glucose in the culture filtrate. The beta-fructofuranosidase activities of yeast grown under NH(4) (+) limitation were much lower than those from yeast grown under any of the conditions of glucose limitation. 5. Yeast cells grown at any of the rates under NH(4) (+) limitation were longer and thinner than those grown at the same rate under any of the conditions of glucose limitation. Mean cell volumes were dependent on growth rate but not on the nature of the substrate limitation. 6. Electron micrographs of thin sections of isolated walls showed that cells grown under NH(4) (+) limitation had a more porous structure than those from cells grown under any of the conditions of glucose limitation.