gebhart/patrepeval huggingface dataset:
Ancistrotectoquinones A and B, the First Quinoid Naphthylisoquinoline Alkaloids, from the Chinese Liana <i>Ancistrocladus tectorius</i> (2016)

From the leaves and stems of Ancistrocladus tectorius (Ancistrocladaceae) from the Chinese island Hainan, two novel-type 7,3'-coupled naphthylisoquinolines, named ancistrotectoquinones A (4) and B (5), were isolated. They are the first alkaloids with a 1,4-naphthoquinone portion coupled to an isoquinoline moiety. Due to the lowered degree of steric hindrance next to the biaryl axis and for electronic reasons, 4 and 5 occur as pairs of configurationally semi-stable, and, thus slowly interconverting atropo-diastereomers. The Gibbs free energies of activation between the two atropisomers of ancistrotectoquinone A (4a/b) were determined by measuring the time-dependent decrease of diastereomeric purity of freshly separated samples enriched with the M- or P-atropisomer and, computationally, by DFT calculations. The absolute configurations at the biaryl axes of the atropo-diastereomers of 4a/b and 5a/b were assigned by online LC-CD analysis. The stereostructure of 4a/b was further confirmed by its semi-synthesis from the likewise 7,3'-coupled 'normal' naphthylisoquinoline alkaloid ancistrotectorine (6), by biomimetic oxidation with Fremy's salt.
Vegetative Composition, Arbuscular Mycorrhizal Fungi Root Colonization, and Biological Nitrogen Fixation Distinguish Organic and Conventional Perennial Forage Systems (2017)

Core Ideas Conventional and organic forage fields did not differ in total forage yield. Legume content was more than two times greater under organic management. Total forage biological nitrogen fixation was greater under organic management. Arbuscular mycorrhizal fungi root colonization was greater under organic management. Arbuscular mycorrhizal fungi root colonization was inversely related to soil test P concentrations. Low concentrations of Olsen soil test phosphorus (STP) on organic dairy farms in Canada have been reported, however, the resulting impact on crop productivity is unclear. This study evaluated mixed forage (alfalfa [ Medicago sativa L.]/timothy [ Phleum pratense L.]) productivity, nutrient uptake, and related soil biological and biochemical properties on organic and conventional dairy farms in Ontario, Canada. Despite a lower STP concentration, mean organic forage yield (8.0 Mg DM ha −1 ) did not significantly differ from conventional (9.5 Mg DM ha −1 ). The proportion of N derived from biological nitrogen fixation (BNF) in alfalfa did not differ by management system, however the total forage BNF‐N was greater in the organic fields due to a twofold increase in legume proportions. Alfalfa tissue P concentrations, above the suggested critical value of 2.0 g kg −1 in all systems, were positively correlated with STP ( r = 0.82, P = < 0.0001) and significantly greater in conventional (3.3 g kg −1 ) than organic (2.4 g kg −1 ). Mean arbuscular mycorrhizal fungi (AMF) root colonization of alfalfa was greater in organic systems (37 vs. 23%) and was negatively correlated with STP ( P = 0.0006). Management systems did not differ in soil alkaline and acid phosphatase activity, or phytase‐labile P. It was concluded that legume‐based forages can produce acceptable yields at low STP concentrations (<10 mg kg −1 ) and supports the importance of legumes, legume BNF, and biological processes linked to soil P cycling in maintaining productivity in organic dairy farming systems.
Analysis, optimization, and assessment of radioisotope thermophotovoltaic system design for an illustrative space mission (1995)

A companion paper presented at this conference described the design of a Radioisotope Thermophotovoltaic (RTPV) Generator for an illustrative space mission (Pluto Fast Flyby). It presented a detailed design of an integrated system consisting of a radioisotope heat source, a thermophotovoltaic converter, and an optimized heat rejection system. The present paper describes the thermal, electrical, and structural analyses which led to that optimized design, and compares the computed RTPV performance to that of a Radioisotope Thermoelectric Generator (RTG) designed for the same mission. RTPVs are of course much less mature than RTGs, but our results indicate that—when fully developed—they could result in a 60% reduction of the heat source’s mass, cost, and fuel loading, a 50% reduction of generator mass, a tripling of the power system’s specific power, and a quadrupling of its efficiency. The paper concludes by briefly summarizing the RTPV’s current technology status and assessing its potential applicability for the PFF mission. For other power systems (e.g., RTGs), demonstrating their flight readiness for a long mission is a very time‐consuming process to determine the long‐term effect of temperature‐induced degradation mechanisms. But for the case of the described RTPV design, the paper lists a number of factors, primarily its cold (0 to 10 °C) converter temperature, that may greatly reduce the need for long‐term tests to demonstrate generator lifetime. In any event, our analytical results suggest that the RTPV generator, when developed by DOE and/or NASA, would be quite valuable not only for the Pluto mission but also for other future missions requiring small, long‐lived, low‐mass generators.
A study on Moodle's performance (2008)

Learning Management Systems (LMS) are essential tools to the modern teaching institutions. Moodle is an open source LMS, widely used by open and distance teaching universities, as well as support to face to face courses. There are almost 40,000 registered Moodle sites, all over the world. Moodle can be installed in a wide range of environments: operating systems (Linux, Windows), supporting databases (MySQL, PostgreSQL, ...), and hardware. This paper addresses the issue of Moodle’s performance within different environments, and under different loads. What is worth changing and what isn’t to improve performance? When load increases, what should be changed in order to obtain the largest performance gain? To answer these questions, it is important to subject the application, in a test environment, to the real conditions of use. In order to do it, we use historical data on the use of Moodle in Universidade Aberta. Several Moodle instances will be subject to different load levels and the resulting performance will be measured. It is difficult to estimate instantaneous load, even in a working site, where users’ habits are known. The number of users is an easier question to address and may be estimated by the number of teachers and students that will be using the LMS. So, in order to estimate future load, we present a conversion method according to the present level of use in this university.
<title>Queuing in optical packet switches</title> (1992)

Recently, there has been an increased awareness of the impact queuing plays in the performance and design of high-performance packet switches. For instance, the importance of memory sharing and trunking is generally accepted by researchers and developers today, especially when one considers `real' traffic that is `bursty.' Burstiness can result from the sources themselves, and can be exacerbated by store-and-forward networks. In this paper, we address some new features and characteristics of queuing in optical packet switches. All of the fundamental results (e.g., the performance advantages of output queuing and the memory reduction of buffer sharing) still apply to optical packet switches. However, the limited state of optical technology (e.g., the lack of an optical random access memory) puts constraints on the architecture of optical packet switches. The lack of an optical random access memory led many in the past to propose hybrid switch architectures that exploit the advantages of both optics and electronics, using electronics for the queuing of packets. Here, we instead focus our attention on the fundamental performance limitations associated with `all-optical' packet switches, in which the packet buffering is implemented via fiber delay lines.
La théorie du rayonnement et les quanta: rapports et discussions de la réunion tenue à Bruxelles du 30 octobre au 3 novembre 1911 (1912)

sous les auspices de M. E. Solvay
A tool for checking Anycast Group Configuration (AGC) (2009)

Anycast is applied in many protocols to provide automatically fault
recovery (high availability) and scalability, i.e Anycast RP in PIM,
Cooperative Home Agent and Cooperative Foreign Agent in Mobile IP.
When the Operator's engineer completing configuring an anycast
group, they need a tool to check whether each group member can be
reached by the anycast address (instead of by each member's unicast
address) When the anycast group members are changed, e.g. there are
some new members added on, there are some old members deleted from the
group, a tool is needed to check whether the changed group/member can
be reached by the anycast address as it should be. When an anycast
group have been canceled by configuration, there need a tool to check
whether the anycast group configuration have been wiped off from all
group members. The existing method is to use existent PING command to
ping the anycast address. This existing method can only prove whether
one member in the anycast group instead of all members of the anycast
group identified by the anycast address can be reached by that anycast
address. Hence it cannot satisfy above problems. This document
provides a solution to prove that each member of a given anycast group
can be arrived by that anycast address.
Forecasting Cryptocurrency Volatility (2017)

From the Washington University Senior Honors Thesis Abstracts (WUSHTA), 2017. Published by the Office of Undergraduate Research. Joy Zalis Kiefer, Director of Undergraduate Research and Associate Dean in the College of Arts & Sciences; Lindsey Paunovich, Editor; Helen Human, Programs Manager and Assistant Dean in the College of Arts and Sciences Mentors: Mina Lee and Li Yang
Study on the effects of different pre-treatments on the extract of grape skin essential oil with supercritical fluid (2003)

针对葡萄皮渣综合利用问题,研究了超临界流体萃取技术提取葡萄皮精油过程中不同预处理方式对萃取率的影响.结果表明,不同含水量条件下,粉碎粒度由0.9mm降低到0.2mm,萃取率均有明显提高;含水量越低萃取率越高,含水量7.26%时的萃取率相应低于含水量5.53%的处理组;葡萄皮的真空冷冻干燥预处理方式最适于超临界流体萃取葡萄皮精油,萜烯类化合物得率为78.16%.
Single channel 160 GB/s OTDM propagation over 480 km of standard fiber using a 40 GHz semiconductor mode-locked laser pulse source (2002)

We have successfully demonstrated the propagation of 160 GB/s over 480 km of NDSF using a 40 GHz semiconductor mode locked laser (MLL) as a pulse source and a two stage, dual drive, electroabsorption modulator (EAM) based optical time domain demultiplexer (OTDD). Theoretical predictions show that the reach can be significantly extended by using distributed Raman amplification, and that the WDM penalties due to nonlinear effects are negligible.
The composition of lithium methylcuprates in ether solvents (1977)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe composition of lithium methylcuprates in ether solventsE. C. Ashby and John J. WatkinsCite this: J. Am. Chem. Soc. 1977, 99, 16, 5312–5317Publication Date (Print):August 1, 1977Publication History Published online1 May 2002Published inissue 1 August 1977https://pubs.acs.org/doi/10.1021/ja00458a015https://doi.org/10.1021/ja00458a015research-articleACS PublicationsRequest reuse permissionsArticle Views281Altmetric-Citations94LEARN 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
Foaming Betadine Spray as a potential agent for non-labor-intensive preoperative surgical site preparation (2015)

The povidone-iodine aerosolized foam could potentially serve as a non-labor intensive antimicrobial agent for surgical site preparation.
Verapamil as an antiarrhythmic agent in congestive heart failure: hopping from rabbit to human? (2011)

Repolarization‐dependent cardiac arrhythmias only arise in hearts facing multiple ‘challenges’ affecting its so‐called repolarization reserve. Congestive heart failure (CHF) is one such challenge frequently observed in humans and is accompanied by altered calcium handling within the contractile heart cell. This raises the question as to whether or not the well‐known calcium channel antagonist verapamil acts as an antiarrhythmic drug in this setting, as seen in arrhythmia models without CHF. According to the study of Milberg et al . in this issue of BJP , the answer is yes. The results of this study, using a rabbit CHF model, raise important questions. First, given that the model combines CHF with a number of other interventions that predispose towards arrhythmia, will similar conclusions be reached in a setting where CHF is a more prominent proarrhythmic challenge; second, what is the extent to which other effects of calcium channel block would limit the clinical viability of this pharmacological approach in CHF? In vivo studies in large animal CHF models are now required to further explore this interesting, but complex, approach to the treatment of arrhythmia. LINKED ARTICLE This article is a commentary on Milberg et al ., pp. 557–568 of this issue. To view this paper visit http://dx.doi.org/10.1111/j.1476‐5381.2011.01721.x
The hypolipidemic effect of a new ACAT inhibitor, VULM 1457, in diabetic-hypercholesterolaemic rats. (2005)

The use of inhibitors of enzyme acyl-CoA: cholesterol acyltransferase (ACAT) seems to be a novel potential approach for a therapeutic treatment of dyslipidaemias and atherosclerosis. VULM 1457 is an ACAT inhibitor, which has expressed potent hypolipidemic and antiatherosclerotic effects in previous studies. In this study, we used streptozocin-induced diabetic rats, which were fed a fat-cholesterol diet to evaluate the affect of VULM 1457 on the atherogenic lipids levels in both plasma and liver. VULM 1457, with a slight influence on triglyceride levels, significantly reduced plasma and hepatic cholesterol concentrations (p < 0.05, p < 0.001; respectively) in the diabetic-hypercholesterolaemic rats.
Stimulation of Lactic Acid Bacteria by Substances Concomitant to Certain Proteolytic Enzymes (1955)

The addition of certain protein hydrolytic products to semi-synthetic and synthetic media has led to observations of enhanced growth and/or metabolic activity of a number of bacterial genera. A classic study in this phase of bacterial nutrition was that of Woolley and his associates, who used the term "strepogenin" to denote the growth-stimulatory effect of various peptides. They observed that trypsinized casein (8) and acid hydrolyzed casein (9) contained hydrolytic cleavage products (presumably peptides) that markedly increased the growth response of several genera of lactic acid bacteria. Subsequent investigations failed to elucidate the structure of the active peptides in casein hydrolyzates; however, certain synthetic peptides containing glutamic acid exhibited activity, although this activity was much less than that of hydrolyzed casein (11).
The channel segregation, a self-organized dynamic channel allocation method: application to TDMA/FDMA microcellular system (2003)

Spectrum efficiency for a TDMA/FDMA microcellular system, where the base station does not load with full system channels as is seen in a conventional cellular system, can be heavily deteriorated if a coordinated use of the channels is not adopted: the random use of the channels on the same frequency between neighboring cells is most harmful. The authors show that the channel segregation (SEG) which has been proposed as a sophisticated dynamic channel assignment (DCA) method, has a capability to resolve this problem. Results of the analysis with computer simulation reveal that the SEG gives a higher spectrum efficiency compared with the conventional DCA, when applied to a TDMA/FDMA microcellular system. No significant modification to the SEG algorithm is required except that the channel usage is restricted depending on the channel usage situation due to the partial loading of the channels.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Preparation and characterization of pH‐ and temperature‐responsive semi–interpenetrating polymer network hydrogels based on linear sodium alginate and crosslinked poly(<i>N</i>‐isopropylacrylamide) (2005)

Abstract In this study, pH‐ and temperature‐responsive hydrogels based on linear sodium alginate (SA) and crosslinked poly( N ‐isopropylacrylamide) (PNIPAAm) were prepared by semi‐interpenetrating network (semi‐IPN) technique. The dually responsive hydrogels were characterized by FTIR, DSC, and SEM, and their temperature‐ and pH‐responsive behaviors were investigated by measuring equilibrium swelling ratios and pulsatile swelling experiments. The results showed that these hydrogels underwent volume phase transition at around 33°C irrespective of the pH value of the medium, but their pH sensitivity was evident only below their volume phase transition temperature. Under basic conditions, the swelling ratios of SA/PNIPAAm semi‐IPN hydrogels were greater than that of pure PNIPAAm hydrogel and increased with increasing SA content incorporated into the hydrogels, but the case was inverse under acidic conditions. The pulsatile swelling experiments indicated that the higher the SA content in SA/PNIPAAm semi‐IPN hydrogels, the faster the response rate to both pH and temperature change. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 97: 1931–1940, 2005
Evaluation of equation‐of‐state parameters from <i>PVT</i> data (1995)

Abstract The characteristic parameters for three different equation‐of‐state (EOS) theories have been determined for polystyrene and low‐molecular weight polyisoprene using pressure‐volume‐temperature ( PVT ) data. Basically two procedures for the calculation of characteristic parameters were applied. The characteristic parameters were calculated, firstly, from coefficients of expansion, compressibilities and densities, and secondly, by fitting the corresponding EOS to PVT data minimizing the sum of the squares of the differences between experimental and calculated pressures. The characteristic parameters obtained by the two methods are compared with regard to their ability to describe PVT data. A comparison of the three different EOS theories reveals that, for describing polymeric liquids, the modified cell model of Dee and Walsh is superior to the theory of Flory, Orwoll and Vrij as well as to the lattice fluid theory of Sanchez and Lacombe. Finally, formulae are given to convert the characteristic parameters from one theory into those of another.
Dorsoventral patterning in plants (1999)

Although mutations affecting dorsoventral patterning in plants have been known for centuries (Linnaeus 1749), the underlying mechanisms controlling this process have remained mysterious. Recent papers by Sawa et al. (1999b) and others have begun to shed light on this subject through the isolation and characterization of genes responsible for dorsoventrality. In plants, lateral organs and shoots are initiated from the flanks of the shoot apical meristem (SAM), a multilayered dome of self-organizing and self-perpetuating cells. Primordia emerge from the SAM with a characteristic asymmetry and identity that depend on both extrinsic and intrinsic factors (Fig. 1). For leaf primordia, this means having distinct upper and lower programs of growth and cellular differentiation so that cells in the upper half develop the appropriate epidermis, palisade mesophyll, and xylem strand, and cells in the bottom half develop a phloem strand, a spongy mesophyll, and appropriate epidermis. Organ shape and cell-type differences between the adaxial (upper) and abaxial (lower) sides of the mature leaf ensure that the plant puts the bulk of its light-gathering capacity toward the light. The asymmetry in the shape of most leaves is apparent from inception as they emerge as a crescent on the flank of the SAM, and this dorsoventrality is further accentuated by differential growth of the adaxial and abaxial sides. Early asymmetry is also revealed by adaxialand abaxial-specific expression of genes in incipient and young organ primordia (Fig. 1; see also Sawa et al. 1996). Dorsoventral patterning also occurs in lateral primordia that give rise to asymmetric shoots, such as the snapdragon flower, in which the upper and lower positioned petals and stamens differ. The dorsoventrality of this and other asymmetric lateral shoots is a result of the differences in the initiation and growth of organs on the adaxial and abaxial sides of the lateral SAM, and also to the asymmetry of the lateral SAM itself.
Wireless for Managing Health Care (2011)

The Wirhe project is an international collaborative study that focused on the future of healthcare needs, technology requirements and solutions for effective use of wireless technologies for health care delivery. This paper presents results of a Wirhe survey of 85 experts and individual interviews with 35 experts. Key findings include: 1) both notable quality improvements and process enhancements can be expected from effectively utilizing wireless technologies and mobile solutions, 2) integration of personal health monitoring and professional health management is a key issue to be addressed and 3) health promotion and illness prevention efforts can grow by utilizing mobile solutions. We propose a framework that can be used in developing wireless health care solutions for managing diseases and related health problems. This framework can also be used to structure and stratify the needs of technologies and solutions, and to estimate their market potential.
The Effect of Temperature on Fluorescence of Solutions (1959)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Effect of Temperature on Fluorescence of SolutionsE. J. Bowen and J. SahuCite this: J. Phys. Chem. 1959, 63, 1, 4–7Publication Date (Print):January 1, 1959Publication History Published online1 May 2002Published inissue 1 January 1959https://pubs.acs.org/doi/10.1021/j150571a003https://doi.org/10.1021/j150571a003research-articleACS PublicationsRequest reuse permissionsArticle Views2102Altmetric-Citations147LEARN 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 Get e-Alerts