gebhart/patrepeval huggingface dataset:
A New Method of Enteroscopy–The Double-Balloon Method (2003)

The diagnosis and treatment of diseases of the small intestine have been impeded by difficult technical challenges. Traditionally, endoscopic evaluation of this organ has required open laparotomy with the surgically assisted passage of the scope through the intestine. Nonsurgical endoscopic techniques have been developed, including push enteroscopy, passage of a scope over a guide-string, and a method that depends on peristalsis to advance the instrument, but each of these is subject to severe limitations. A novel procedure has been devised, whereby an endoscope and a soft flexible overtube, each of which has an inflatable balloon attached to its distal end, are employed together. The technique is described in detail in the present article. Double-balloon enteroscopy allows visualization of the entire small intestine, to and fro examination of an area of interest, and the taking of biopsy specimens in a manner that is safer, quicker and less painful than previous techniques. It constitutes an important advance in the diagnosis and management of bleeding and other small intestinal disorders.
Chemical Composition of Essential Oils Derived from Eucalyptus and Lemongrass and Their Antitermitic Activities Angainst Microtermes mycophagus (Desneux). (2013)

The essential oils of eucalyptus (Eucalyptus citriodora) and lemon grass (Cymbopogon citratus) were analyzed by GC-MS and tested against economically important termite species of Pakistan i.e., Microtermes mycophagus (Desneux). Their physical parameters were also scanned. The major constituents identified in eucalyptus oil are: eucalyptus, limonene, terpinen-4-ol, gravenone, n-tetradecane, 2,2¢6,6¢-tetramethyl piperidin-4-ol, piperitone and the chemical components of lemon grass oil are: myrcene, citronellol, citral, nerol and neric acid. The repellency, toxicity, fumigation activities of test oils and tunneling behaviours of M. mycophagus were evaluated. At 25 μg/10μL oil concentration, lemon grass showed 63.33 % and eucalyptus oil showed 62.22 % mortality and at the same concentration, the repellency test revealed that both eucalyptus and lemon grass oils showed efficient repellency i.e., 42.6 and 36.33 % respectively. Fumigation results revealed that lemon grass caused 100 % mortality at 5 ppm concentration on 9th day of treatment whereas eucalyptus gave same result in the end of test period (day 12). When tunneling behaviour was observed for M. mycophagus, the average time to cross the tube at 50 μg was 28 and 50 h in eucalyptus and lemon grass oil one-to-one.
Stereochemical Effects in Supramolecular Self-Assembly at Surfaces:  1-D versus 2-D Enantiomorphic Ordering for PVBA and PEBA on Ag(111) (2002)

We present investigations on noncovalent bonding and supramolecular self-assembly of two related molecular building blocks at a noble metal surface: 4-[trans-2-(pyrid-4-yl-vinyl)]benzoic acid (PVBA) and 4-[(pyrid-4-yl-ethynyl)]benzoic acid (PEBA). These rigid, rodlike molecules comprising the same complementary moieties for hydrogen bond formation are comparable in shape and size. For PVBA, the ethenylene moiety accounts for two-dimensional (2-D) chirality upon confinement to a surface; PEBA is linear and thus 2-D achiral. Molecular films were deposited on a Ag(111) surface by organic molecular beam epitaxy and characterized by scanning tunneling microscopy. At low temperatures (around 150 K), both species form irregular networks of flat lying molecules linked via their endgroups in a diffusion-limited aggregation process. In the absence of kinetic limitations (adsorption or annealing at room temperature), hydrogen-bonded supramolecular assemblies form which are markedly different. With PVBA, enantiomorphic twin chains in two mirror-symmetric species running along a high-symmetry direction of the substrate lattice form by diastereoselective self-assembly of one enantiomer. The chirality signature is strictly correlated between neighboring twin chains. Enantiopure one-dimensional (1-D) supramolecular nanogratings with tunable periodicity evolve at intermediate coverages, reflecting chiral resolution in micrometer domains. In contrast, PEBA assembles in 2-D hydrogen-bonded islands, which are enantiomorphic because of the orientation of the supramolecular arrangements along low-symmetry directions of the substrate. Thus, for PVBA, chiral molecules form 1-D enantiomorphic supramolecular structures because of mesoscopic resolution of a 2-D chiral species, whereas with PEBA, the packing of an achiral species causes 2-D enantiomorphic arrangements. Model simulations of supramolecular ordering provide a deeper understanding of the stability of these systems.
恩斯特·布洛赫及“未来的引力” (1989)

布洛赫的著作涉及的主题之多是难以置信的：从音乐学到认识论、从社会的与文学的批评到政治理论。尽管一些评论家们常给他加上神学家的称号，但布洛赫并不是神学家。布洛赫是一个哲学家，并且争少用他自己的话来说，他是一个无神论者。
Effects of prolonged aminoglutethimid and dehydroepiandrosterone treatment on rat bones. (1983)

Authors studied the effect of prolonged sex hormone deficiency on some parameters of bone metabolism in calcitonin sensitive young male rats. 30 rats were given aminoglutethimid (AG) for 36 days. Part of these animals received plus dehydroepiandrosterone (DEA) treatment. Corticoid deficiency was substituted by cortisone. In addition 22 rats were administered only cortisone, 11 animals cortisone and DEA, and 10 rats only DEA for 36 days. On day 37 the different parameters of treated rats were compared to findings in 31 control animals. It has been found that body weight, calcitonin hypocalcaemia, serum alkaline phosphatase, as well as bone ash weight pro unit body weight was significantly lower in AG treated rats as compared to controls and rats receiving DEA in addition to AG. Values of latter group did not differ from controls. It has also been established that neither cortisone substitution nor isolated DEA treatment did involve significant differences in the studied parameters of bone metabolism as compared to controls. The findings support the opinion that sex hormone deficiency, directly or indirectly results osteoporosis. The experimental model seems to be suitable for the study of androgen deficient osteopenia.
Tensile Properties and Water Absorption of Zein Sheets Plasticized with Oleic and Linoleic Acids (1999)

Corn zein has been investigated for fabrication of biodegradable packaging materials. Our objective was to investigate the effect of added plasticizers, oleic and linoleic acids, on tensile properties and water absorption of zein sheets. Moldable resins were precipitated from aqueous ethanol dispersions of zein and fatty acids and rolled into sheets of approximately 0.5 mm in thickness. To increase plasticization effects, zein-oleic acid sheets were replasticized by heating them in fatty acid baths. Plasticization resulted in flexible sheets of high clarity, low modulus, and high elongation and toughness, although low tensile strength. Water absorption of zein sheets was lowered by plasticization, attributed in part to reduced mass fraction of zein. Polymerization of linoleic acid may have sealed off pores on sheet surfaces, thus slowing water absorption.
Precise integration methods based on the Chebyshev polynomial of the first kind (2008)

这篇论文为结构的动态反应分析基于第一种类型的 Chebyshev 多项式介绍精确集成方法的二种新类型，也就是不可分的公式方法(IFM ) 和一致起始的系统方法(HISM ) 。在两个方法，在直接集成被执行以前，在时间间隔以内的非线性的可变装载用第一种类型的 Chebyshev 多项式被模仿。根据不可分的公式发展了，在这篇论文建议的不可分的计算的复发关系与 Crout 被相结合解决线性代数学的方程的分解方法。这样， IFM 基于第一种类型的 Chebyshev 多项式被构造。转变非同质的起始的系统到同类的动态系统，并且没有维的扩大，开发一个特殊计划， HISM 基于第一种类型的 Chebyshev 多项式能避免矩阵倒置操作。集成计划被检验的时间并且与其它相比的精确性通常使用了计划，并且更大的精确性以及不太耗时的罐头被完成，这被显示出。二个数字例子被举表明这些新方法的适用性。
Urokinase Receptor (uPAR, CD87) Is a Platelet Receptor Important for Kinetics and TNF-Induced Endothelial Adhesion in Mice (1999)

These results demonstrate for the first time the critical role of platelet uPAR for kinetics as well as for activation and endothelium adhesion associated with inflammation.
The critical molecular weight for resisting slow crack growth in a polyethylene (1996)

An ethylene-hexene copolymer was fractionated into five fractions and the density of short-chain branches was measured for each fraction. The slow crack growth behavior was measured on each fraction by sandwiching the small amount of fractionated resin of about 0.2 g between polyethylene grips. The resistance to slow crack growth was negligible for the three fractions whose Mw was less than 1.5 × 105. For the fourth fraction with Mw greater than 1.5 × 105, the resistance to slow crack growth was very high, being greater than that for the whole resin even though its density of short-chain branches was less than that of the whole resin. It is concluded that a molecular weight greater than 1.5 × 105 is required to create the number of tie molecules that is necessary to produce a high resistance to slow crack growth in this particular copolymer. © 1996 John Wiley & Sons, Inc.
Investigation on Buck and Push-pull Cascade DC-DC Converter (2008)

Buck and push-pull cascade and current-fed DC/DC converter is introduced.The voltage stresses on push-pull switching devices and rectifiers are low and are not influenced by input voltage.This converter is fit for wider input voltage ranges.The principle is analyzed.The design procedures of the current-fed push-pull converter's power stage,control circuit and high frequency transformer are introduced.A prototype of 36～72 V input,5 V/50 W output is built up and the experi-mental results are given.
Molecular and Electronic Structures of Bis-(<i>o</i>-diiminobenzosemiquinonato)metal(II) Complexes (Ni, Pd, Pt), Their Monocations and -Anions, and of Dimeric Dications Containing Weak Metal−Metal Bonds (2003)

Two series of square planar, diamagnetic, neutral complexes of nickel(II), palladium(II), and platinum(II) containing two N,N-coordinated o-diiminobenzosemiquinonate(1-) pi radical ligands have been synthesized and characterized by UV-vis and (1)H NMR spectroscopy: [M(II)((2)L(ISQ))(2)], M = Ni (1), Pd (2), Pt (3), and [M(II)((3)L(ISQ))(2)] M = Ni (4), Pd (5), Pt (6). H(2)[(2)L(PDI)] represents 3,5-di-tert-butyl-o-phenylenediamine and H(2)[(3)L(PDI)] is N-phenyl-o-phenylenediamine; (L(ISQ))(1-) is the o-diiminobenzosemiquinonate pi radical anion, and (L(IBQ))(0) is the o-diiminobenzoquinone form of these ligands. The structures of complexes 1, 4, 5, and 6 have been (re)determined by X-ray crystallography at 100 K. Cyclic voltammetry established that the complete electron-transfer series consisting of a dianion, monoanion, neutral complex, a mono- and a dication exists: [M(L)(2)](z)z = -2, -1, 0, 1+, 2+. Each species has been electrochemically generated in solution and their X-band EPR and UV-vis spectra have been recorded. The oxidations and reductions are invariably ligand centered. Two o-diiminobenzoquinones(0) and two fully reduced o-diiminocatecholate(2-) ligands are present in the dication and dianion, respectively, whereas the monocations and monoanions are delocalized mixed valent class III species [M(II)(L(ISQ))(L(IBQ))](+) and [M(II)(L(ISQ))(L(PDI))](-), respectively. One-electron oxidations of 1 and trans-6 yield the diamagnetic dications [cis-[Ni(II)((2)L(ISQ))((2)L(IBQ))](2)]Cl(2) (7) and [trans-[Pt(II)((3)L(ISQ))((3)L(IBQ))](2)](CF(3)SO(3))(2) (8), respectively, which have been characterized by X-ray crystallography; both complexes possess a weak M.M bond and the ligands adopt an eclipsed configuration due to weak bonding interactions via pi stacking.
Computational weld mechanics (CWM) framework for exploring parametric design space to manage weld optimization (2011)

lnternet, preter, distribuer et vendre des theses partout dans le monde, a des fins commerciales ou autres, sur support microforme, papier, electronique et/ou autres formats.
Flying under the radar (2014)

Public-sector funds may not gain much media attention but their numbers have remained stable and they are continuing to innovate and compete.
Proteasome inhibitors suppress formation of polyglutamine‐induced nuclear inclusions in cultured postmitotic neurons (2004)

At least nine neurodegenerative disorders are caused by expansion of polyglutamine repeats in various genes. This expansion induces the formation of nuclear inclusions (NI) within various cell types. In this study, we developed a model for polyglutamine diseases using primary cultures of sympathetic neurons from the superior cervical ganglia of prenatal rat pups. Transfection with a plasmid encoding 127 glutamine repeats causes NI to develop in approximately 70% of the sympathetic neurons within 6 days. In addition, it causes somatic atrophy and inhibits dendritic growth. The NIs contain ubiquitinated proteins and sequester the molecular chaperone heat shock protein 70 (Hsp70). We found that two specific proteasome inhibitors, lactacystin and CEP1612, suppress thezformation of polyglutamine-induced NI. In addition, lactacystin treatment induced the removal of preexisting NI. Western blotting and immunocytochemistry revealed that lactacystin and CEP1612 strongly induce the expression of Hsp70, whereas less specific proteasome inhibitor such as N-acetyl-Leu-Leu-Norleucinal does not. Coexpression of 127 glutamines with a plasmid encoding wild-type Hsp70 gene resulted in a marked reduction of the percentage of neurons containing NI. In addition, transfection with plasmids encoding mutant Hsp70 blocked the effects of lactacystin. These findings further implicate Hsp70 as a neuroprotective molecule and they suggest the potential utility of certain proteasome inhibitors in the treatment of polyglutamine diseases.
A Four-Dimensional Histogram Approach to the Clustering of Landsat Data (1976)

SUMMARYThis paper describes an unsupervised classification scheme for the production of thematic maps from LANDSAT imagery. In this method, spectrally separable classes are identified from a four-dimensional histogram generated from a portion of a LANDSAT image. The scheme is very rapid, memory requirements are modest, and it can be implemented in an interactive mode on a timesharing computer system. Test results from an agricultural area near Melfort, Saskatchewan, exhibit accuracies of the classifications comparable to those obtained by supervised methods.
Cardiac valve annulus manual segmentation using computer assisted visual feedback in three-dimensional image data (2010)

Annulus manual segmentation is an important tool for the study of valve anatomy and physiology, for the four main valves of the heart (mitral, tricuspid, aortic and pulmonary). In this paper we review two traditional manual segmentation approaches: slice-by-slice and interpolating a sparse set of landmarks with a spline curve. We propose a new Spline Tool for the open source software platform Seg3D, that is fast and improves spatial coherence by providing visual feedback of the segmentation in real time. The Spline Tool was tested successfully on 14 rat hearts, on all four valves.
Effect of urokinase on posterior penetrating eye injuries. (1985)

We studied the effect of urokinase on the natural course of posterior penetrating eye injury in an animal model that consistently results in late tractional retinal detachment. A standard penetrating injury was performed on both eyes of 20 rabbits. Each eye received 0.4 mL of heterologous rabbit plasma. Then 10 000 U of urokinase was injected in one randomly chosen eye of each animal; an equal volume of balanced salt solution (BSS) was injected in the other. By 5 to 6 weeks after the surgery 13 (65%) of the 20 urokinase-injected eyes and 15 (75%) of the 20 BSS-injected eyes showed retinal detachment; the proportions are not significantly different. Gross and microscopic study of the enucleated, sectioned eyes failed to reveal any features distinguishing the control and urokinase-treated eyes. Thus, urokinase did not appreciably alter the natural course of development of late tractional retinal detachment after posterior penetrating eye injury.
Total synthesis of (+-)-porantherine (1974)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTotal synthesis of (+-)-porantherineE. J. Corey and Richard D. BalansonCite this: J. Am. Chem. Soc. 1974, 96, 20, 6516–6517Publication Date (Print):October 1, 1974Publication History Published online1 May 2002Published inissue 1 October 1974https://pubs.acs.org/doi/10.1021/ja00827a046https://doi.org/10.1021/ja00827a046research-articleACS PublicationsRequest reuse permissionsArticle Views3046Altmetric-Citations49LEARN 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
In-Time Non-Participant Casualty Risk Assessment to Support Onboard Decision Making for Autonomous Unmanned Aircraft (2019)

Numerous operational paradigms, technologies, and missions are emerging as newcomers to the National Airspace System (NAS) develop small Unmanned Aircraft Systems (sUAS), personal air vehicles and other Urban Air Mobility (UAM) concepts. As the list of applications expands, maintaining the safety of the current airspace system remains one of the core concerns preventing widespread commercial implementation of these concepts. Further, the risks associated with unmanned aircraft operations themselves have to be recognized and mitigated in a timely manner. Safety-critical risks include, but are not limited to, flight outside of approved airspace, unsafe proximity to people or property, critical system failures, loss-of control, and cyber-security related risks. Instead of reacting to accidents, a set of predictive and data-driven risk monitoring, assessment, and mitigation capabilities are envisioned to help capture and eliminate hazards as these systems become operational. NASA’s System-wide Safety project is performing R&D on such a safety assurance concept. As part of this concept, this paper describes an architecture that continuously monitors a diverse set of onboard and ground-based sources to estimate and predict non-participant casualty risk during flight. Timely identification of the changing nature of this risk can inform decision making processes to mitigate current and impending situations.
Janus Structures: Janus Separator of Polypropylene‐Supported Cellular Graphene Framework for Sulfur Cathodes with High Utilization in Lithium–Sulfur Batteries (Adv. Sci. 1/2016) (2016)

The shuttle of polysulfides between cathode and anode induces low capacity and poor cycling life in lithium-sulfur batteries. As shown in article number 1500268, J.-Q. Huang, Q. Zhang, and co-workers propose a Janus separator—fabricated from polypropylene supported cellular graphene—to promote the utilization and stability of a sulfur cathode by reactivating the non-active separator/cathode interphase.
Regional sedimentological variations in lower triassic fluvial conglomerates (budleigh salterton pebble beds), southwest england: Some implications for palaeogeography and basin evolution (1991)

Abstract The Budleigh Salterton Pebble Beds (BSPD) are a 20–30 m thick formation of conglomerates and subordinate sandstones which crop out along the western margin of the Wessex Basin. The formation has previously been interpreted as representing a major conduit for southerly‐derived (Armorican) detritus and as signalling the start of early Triassic rifting. In this paper the role of the BSPB in the evolution of the Wessex Basin is reassessed. In the south of the outcrop, the lower portions of the BSPB are dominated by extensive (> 50m) sheets or narrow lenses of planar cross‐bedded conglomerate (sets 1–3m thick). This reflects deposition from linguoid‐shaped bars whose downstream margins were bounded by slipfaces. These accreted at anabranch confluences and as bank‐attached bars in relatively confined and channelized gravel‐bed streams. Most of the rest of the BSPB consists of couplets of horizontally‐bedded conglomerate overlain by large‐scale trough cross‐bedded sandstone. This style of accretion represents deposition from relatively low‐relief gravel bars and large sand dunes in substantial but poorly confined channels. Towards the top of the BSPB in the central parts of the outcrop, there is a change to thinner‐bedded units with more lenticular and ribbon‐like geometries. This represents deposition in smaller and more flashy streams. The BSPB was deposited either on a braidplain or by an antecedent ‘wet’ alluvial fan. In both settings, the BSPB streams were exotic, draining basins to the south of the Wessex Basin. This implies that the BSPB did not necessarily develop in response to differential subsidence and rifting within the Wessex Basin.
Nitric oxide: an important bioregulator. (1993)

This limited discussion focuses on the apparent magnitude of the importance of NO-related mechanisms in the maintenance of blood flow to a number of tissue beds, the exaggerated effects in cirrhotics, its effects on platelets and immune modulation, and the potential for manipulation with agonists and antagonists. The possibility of pharmacologic control of this system may play a significant role in the management of patients with liver disease, whether for the treatment of the hypotension associated with low SVR, or endotoxemia/sepsis, or the pulmonary hypertension seen in approximately 1.6% of liver transplant candidates. This is a complex, heavily interrelated system, and the veracity of these various experimental claims for NO needs to be thoroughly evaluated for clinical relevance.
Research Progress in Artemisia annua L. (2010)

Artemisia annua L.contains a high medicinal value,prospect is very broad.In view of this,This paper summarizes the major chemical constituents,pharmacological effect and clinical application,biological characteristics,tissue culture,cultivation techniques,harvesting and processing etc.of Artemisia annua L.research progress in recent years,in order to provide a theoretical basis for research and development of Artemisia annua L.
Recent Developments in the Structural Chemistry of Tellurium With Sulfur and Selenium Containing Ligands (1998)

Since the author's last surveys of this field in 1983 and 1987,1,2 there has been considerable developments in the structural chemistry of tellurium. A comprehensive review covers the field through most of 1993.3
Ground penetrating radar as a subsurface environmental sensing tool (1994)

Ground penetrating radar (GPR) is considered as an environmental tool. The basic concepts involved in GPR are introduced briefly including the antennas, propagation, target scattering, and mapping. Target identification is important when using GPR since the scatterer can only be observed by evacuation. This is discussed in terms of mapping and complex natural resonances. GPR has been used and is being considered as a tool for the detection of a wide variety of subterranean features. A very brief description of the various applications of GPR is presented. In terms of environmental sensing, it has been applied to detect buried tanks, landfill debris, water levels, and contaminated fluids. The detection of various military devices also represent a serious environmental concern including landmines and unexploded ordnance. There are also possible applications involving the detection of buried utilities highway voids, grave sites. It has been used for examining archeological sites. The above list is far from complete because of the ever-expanding use of GPR.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>