gebhart/patrepeval huggingface dataset:
The Synthesis of Steroidal Cyclopropano Ketones (1966)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Synthesis of Steroidal Cyclopropano KetonesGerald W. Krakower and H. Ann Van DineCite this: J. Org. Chem. 1966, 31, 11, 3467–3473Publication Date (Print):November 1, 1966Publication History Published online1 May 2002Published inissue 1 November 1966https://pubs.acs.org/doi/10.1021/jo01349a002https://doi.org/10.1021/jo01349a002research-articleACS PublicationsRequest reuse permissionsArticle Views75Altmetric-Citations19LEARN 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
Transition metal catalysed reactions of alcohols using borrowing hydrogen methodology (2008)

The reactivity of alcohols can be enhanced by the temporary removal of hydrogen using a transition metal catalyst to generate an intermediate aldehyde or ketone. The so-formed carbonyl compound has a greater reactivity towards nucleophilic addition accommodating the in situ formation of imines or alkenes. The return of hydrogen from the catalyst leads to the formation of new C-N and C-C bonds, often with water as the only reaction by-product.
Junction temperature measurement of GaN-based light-emitting diodes using temperature-dependent resistance (2014)

A simple and reliable method to determine the junction temperature of GaN-based light-emitting diodes (LEDs) is presented in this paper. The variation of resistance of doped GaN with temperature is advantageously used to measure junction temperature. A simple calibration relating to temperature and resistance is measured and shows excellent agreement with the model analysis. The junction temperature of the pulsed-driving LEDs is measured by resistance meter and shows good agreement with that by the forward voltage method. Experimental results obtained by the described method are presented and discussed. The temperature-dependent resistance method has potential to be a very useful alternative for measurement of temperature in electronic and optoelectronic devices.
A data center virtualization framework towards load balancing and multi-tenancy (2016)

Virtualization is an essential step before a bare-metal data center being ready for commercial usage, because it bridges the foreground interface for cloud tenants and the background resource management on underlying infrastructures. A concept at the heart of the foreground is multi-tenancy, which deals with logical isolation of shared virtual computing, storage, and network resources and provides adaptive capability for heterogeneous demands from various tenants. A crucial problem in the background is load balancing, which affects multiple issues including cost, flexibility and availability. In this work, we propose a virtualization framework that considers these two problems simultaneously. Our framework takes advantage of the flourishing application of distribute virtual switch (DVS), and leverages the blooming adoption of OpenFlow protocols. First, the framework accommodates heterogeneous network communication pattern by supporting arbitrary traffic matrices among virtual machines (VMs) in virtual private clouds (VPCs). The only constraint on the network flows is the bandwidth of server's network interface. Second, our framework achieves load balancing using an elaborately designed link establishment algorithm. The algorithm takes the configurations of the bare-metal data center and the dynamic network environments as inputs, and dynamically applies a globally bounded oversubscription on every link. Our framework concentrates on the fat-tree architecture, which is widely used in today's data centers.
The Log Contract (1994)

<h3>Introduction</h3> In a context of constrained resources, the efficacy of interventions is a pivotal aim of healthcare systems worldwide. Efficacy of healthcare interventions is highly compromised if clinical reasoning (CR), the process that practitioners use to plan, direct, perform and reflect on client care, is not optimal. The CR process of health professionals is influenced by the institutional dimension (ie, legal, regulatory, administrative and organisational aspects) of their societal and practice contexts. Although several studies have been conducted with respect to the institutional dimension influencing health professionals' CR, no clear integration of their results is yet available. The aim of this study is to synthesise and disseminate current knowledge on the influence of the institutional dimension of contexts on health professionals' CR. <h3>Methods and analysis</h3> A scoping study of the scientific literature from January 1980 to March 2013 will be undertaken to summarise and disseminate research findings about the influence of the institutional dimension on CR. Numerous databases (n=18) from three relevant fields (healthcare, health law and politics and management) will be searched. Extended search strategies will include the manual search of bibliographies, health-related websites, public registries and journals of interest. Data will be collected and analysed using a thematic chart and content analysis. A systematic multidisciplinary team approach will allow optimal identification of relevant studies, as well as effective and valid content analysis and dissemination of the results. <h3>Discussion</h3> This scoping study will provide a rigorous, accurate and up-to-date synthesis of existing knowledge regarding: (1) those aspects of the institutional dimension of health professionals' societal and practice contexts that impact their CR and (2) how these aspects influence health professionals' CR. Through the synergy of a multidisciplinary research team from a wide range of expertise, clinical pertinence and an exhaustive dissemination of results to knowledge-users will be ensured.
[Conformation limited nucleoside-5'-phosphates as termination substrates for DNA-polymerases]. (1989)

We have investigated the ability of some nucleoside 5'-triphosphate analogues to terminate the DNA synthesis catalyzed by calf thymus DNA polymerase alpha and terminal deoxynucleotidyl transferase, rat liver DNA polymerase beta, E. coli DNA polymerase I (Klenow's fragment) and AMV reverse transcriptase. It has been shown that lyxoanhydronucleoside 5'-triphosphates terminate DNA synthesis catalyzed by reverse transcriptase and terminal deoxynucleotydil transferase. 2',3'-O-Isopropylidenecytidine 5'-triphosphate inhibits the DNA synthesis catalyzed by reverse transcriptase and DNA polymerase beta and its moiety was incorporated in the place of dTMP residue. Riboanhydroadenosine 5'-triphosphate reveals the properties of an effective termination substrate for all the DNA polymerases studied. This is the first attempt to investigate nucleotide analogues with the restricted conformation of the carbohydrate moiety as termination substrates for several prokaryotic and eukaryotic DNA polymerases.
Automatic detection of diabetic foot complications with infrared thermography by asymmetric analysis (2015)

Early identification of diabetic foot complications and their precursors is essential in preventing their devastating consequences, such as foot infection and amputation. Frequent, automatic risk assessment by an intelligent telemedicine system might be feasible and cost effective. Infrared thermography is a promising modality for such a system. The temperature differences between corresponding areas on contralateral feet are the clinically significant parameters. This asymmetric analysis is hindered by (1) foot segmentation errors, especially when the foot temperature and the ambient temperature are comparable, and by (2) different shapes and sizes between contralateral feet due to deformities or minor amputations. To circumvent the first problem, we used a color image and a thermal image acquired synchronously. Foot regions, detected in the color image, were rigidly registered to the thermal image. This resulted in 97.8% ± 1.1% sensitivity and 98.4% ± 0.5% specificity over 76 high-risk diabetic patients with manual annotation as a reference. Nonrigid landmark-based registration with B-splines solved the second problem. Corresponding points in the two feet could be found regardless of the shapes and sizes of the feet. With that, the temperature difference of the left and right feet could be obtained.
Pathogenesis and Prevention of Necrotizing Enterocolitis: A Hypothesis Based on Personal Observation and a Review of the Literature (1984)

The hypothesis is, that necrotizing enterocolitis (NEC) of the neonate occurs by the coincidence of two of three pathologic events: (1) intestinal ischemia, (2) colonization by pathogenic bacteria, and (3) excess protein substrate in the intestinal lumen. NEC is more likely to appear following quantitative extremes, ie, severe ischemia highly pathogenic flora, or marked excess of substrate. NEC develops only if a threshold of injury, sufficient to initiate intestinal necrosis, is exceeded. The hypothesis is derived from previous theories by Santulli, which implicated all three events, and by Lawrence, in which a single event, abnormal bacterial colonization, was considered sufficient to induce NEC. This hypothesis may explain both typical occurrences of NEC among high-risk premature infants in neonatal intensive care units (NICUs), and atypical occurrences among infants considered at low-risk, eg, previously healthy term infants, infants fed breast milk exclusively, and infants never fed. It may further explain why NEC fails to develop in most high-risk infants in NICUs. Preventive measures might include: (1) pharmacologic stabilization of intestinal perfusion, (2) modification of the intestinal flora, or (3) feeding colostrum or other protective substances. Each theoretical benefit is accompanied by potential risks. The prevention of NEC may require favorable intervention in two of the three pathologic events.
Effect of hypocapnia on ventral medullary blood flow and pH during hypoxia in cats (1986)

Ventral medullary blood flow was measured in 33 chloralose-urethan anesthetized cats during 60 min of isocapnia-hypoxia, mild hypocapnia-hypoxia, or severe hypocapnia-hypoxia. In an additional group of six animals we measured ventral medullary extracellular fluid (ECF) pH during mild hypocapnia-hypoxia. The increase in blood flow during hypoxia was reduced by mild hypocapnia and eliminated by severe hypocapnia. With the exception of an initial decrease in ECF [H+], which occurred during the first 10 min of mild hypocapnia-hypoxia, ECF [H+] increased progressively throughout the exposure and recovery periods and was significantly elevated from the control value by the first 10 min of the recovery period. The results suggest that hypocapnia affects the hypoxic cerebrovascular response of the ventral medulla and that this phenomenon could affect the regulation of ventral medullary ECF [H+].
Progress in Railroad Freight Car Engineering (1998)

Abstract The Rail Transportation Division (RTD), American Society of Mechanical Engineers (ASME) annually conducts a survey to document progress in the design, construction and use of freight cars and components. This year’s survey brought responses which indicated that 1998 was not a banner year for new developments. The continued evolution of freight equipment in 1998 focused on flexibility and versatility.
Simultaneous Recognition and Relative Pose Estimation of 3D Objects Using 4D Orthonormal Moments (2017)

Both three-dimensional (3D) object recognition and pose estimation are open topics in the research community. These tasks are required for a wide range of applications, sometimes separately, sometimes concurrently. Many different algorithms have been presented in the literature to solve these problems separately, and some to solve them jointly. In this paper, an algorithm to solve them simultaneously is introduced. It is based on the definition of a four-dimensional (4D) tensor that gathers and organizes the projections of a 3D object from different points of view. This 4D tensor is then represented by a set of 4D orthonormal moments. Once these moments are arranged in a matrix that can be computed off-line, recognition and pose estimation is reduced to the solution of a linear least squares problem, involving that matrix and the 2D moments of the observed projection of an unknown object. The abilities of this method for 3D object recognition and pose estimation is analytically proved, demonstrating that it does not rely on experimental work to apply a generic technique to these problems. An additional strength of the algorithm is that the required projection is textureless and defined at a very low resolution. This method is computationally simple and shows very good performance in both tasks, allowing its use in applications where real-time constraints have to be fulfilled. Three different kinds of experiments have been conducted in order to perform a thorough validation of the proposed approach: recognition and pose estimation under z axis (yaw) rotations, the same estimation but with the addition of y axis rotations (pitch), and estimation of the pose of objects in real images downloaded from the Internet. In all these cases, results are encouraging, at a similar level to those of state-of-the art algorithms.
음이온교환막에 의한 수중 페놀의 흡착특성 (2001)

Anion-exchange group was introduced into the polymer chains grafted onto a porous hollow fiber membrane by radiation-induced graft polymerization, and adsorption characteristics of phenol from aqueous solution were investigated. The adsorption of phenol by anion membrane for solution of different pH varied significantly and can be explained by the species distribution of phenol in aqueous solution. Desorption of phenol was achieved using 1N NaOH. A constant capacity for repeated cycles of adsorption and elution is required. No deterioration of the phenol adsorption capacity and elution percentage of the anion-exchange porous hollow fiber memrabe was observed during five cycles.
The Philosophy of Bal Gangadhar Tilak: Karma vs. Jñāna in the Gītā Rahasya (1958)

Lokamanya Tilak (1856–1920) represents the full tide of ideological activity in the Indian Nationalist movement. Long overshadowed by his younger contemporary, Gandhi, his life and thought are only now, a third of a century after his death, receiving due recognition. Prior to his entrance upon the political stage, Indian leadership afforded the spectacle of a rather polite debating society which accepted British ideals and values as almost axiomatic. Protests against government policies consisted of thoughtfully worded petitions calculated to appeal to the sense of reason and fair play of officials. Tilak saw little profit in such method, but his rivals in the Nationalist leadership, particularly G. K. Gokhale, were wedded to the traditions of British parliamentary procedure.
The Flavonoids of Passiflora sexflora (1982)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Flavonoids of Passiflora sexfloraSusan McCormick and T. J. MabryCite this: J. Nat. Prod. 1982, 45, 6, 782Publication Date (Print):November 1, 1982Publication History Published online1 July 2004Published inissue 1 November 1982https://doi.org/10.1021/np50024a029RIGHTS & PERMISSIONSArticle Views223Altmetric-Citations8LEARN 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 InReddit PDF (103 KB) Get e-Alerts Get e-Alerts
Study on the Stratification of Web-based Learners (2012)

This paper set out from the perspective of learning power, giving a comprehensive evaluation on learning ability and learning motivation with the fuzzy evaluating method, according to the different evaluation results, using the grid map to realize the Stratification of web-based learners. We have come one step closer to the improvement and perfection of an ideal individual network teaching.
Design and Development of High Power Dual Polarized Scalar Feed for Doppler Weather Radar Antenna (2001)

Present paper deals with the design and development of a high power dual polarized scalar feed comprising of corrugated conical horn and orthomode transducer for Doppler weather radar applications. Knowledge aided design (KAD) technique has been implemented in the design of orthomode transducers using commercial FEM based electromagnetic simulators. The feed's component design has been carried out using computer software. The fabrication and testing has demonstrated significant advantages in terms of development times and reduction of post manufacturing adjustments.
Littrow configuration tunable external cavity diode laser with fixed direction output beam (2001)

We have developed an enhanced Littrow configuration extended cavity diode laser (ECDL) that can be tuned without changing the direction of the output beam. The output of a conventional Littrow ECDL is reflected from a plane mirror fixed parallel to the tuning diffraction grating. Using a free-space Michelson wavemeter to measure the laser wavelength, we can tune the laser over a range greater than 10 nm without any alteration of alignment.
Combining Machine Learning and Natural Language Processing for Automatic Keyword Extraction (2004)

Automatic keyword extraction is the task of automatically selecting a small set of terms describing the content of a single document. That a keyword is extracted means that it is present verbatim i ...
L-arginine pathway in the sepsis syndrome (1993)

A continuous basal release of nitric oxide plays a role in the regulation of systemic and pulmonary vascular tone in patients with sepsis syndrome. L-arginine has systemic and pulmonary vasodilatory actions.
Food Nutrition Visualization on Google Glass: Design Tradeoff and Field Evaluation (2018)

Acquiring nutritional information before buying and eating food is crucial for making healthier choices and more educated selections. Therefore, there is a demand for electronic devices that can automatically access nutrition information. To help with this, we propose a novel augmented reality (AR)-based wearable food-monitoring system to make food nutritional information available and visible in real-life scenarios, such as at the supermarket. It combines reverse image search (RIS) and text mining to recognize the food, and then it retrieves nutritional information from a remote database. For userfriendliness, the information is overlaid on a live feed from a front-facing camera.
Boersch effect in electron-optical instruments (1979)

This paper analyzes energy broadening in electron and ion beam. Unlike earlier treatments, the present theory takes into consideration thermal and crossover motions jointly, and it includes changes in relative transverse motion where beams converge or diverge. Expressions are presented for energy broadening in cylindrical beams, diverging beams, and beam crossovers. Calculated broadening levels are compared with experimental values given in the literature. Application of the analysis to electron-beam configurations in which chromatic aberrations predominate leads to relations for the maximum current density as a function of spot size. It is shown that, for field-emitting sources, which are imaged into the target, the peak current density is independent of spot size, while, for aperture imaging columns, the maximum current density varies inversely with spot edge resolution.
Spray drying as a method for preparing concentrated cultures of Lactobacillus bulgaricus (1995)

P. TEIXEIRA, H. CASTRO AND R. KIRBY. 1995. Spray drying and freeze drying as methods for concentration of Lactobacillus bulgaricus starter cultures were compared in terms of viability, lag phase until onset of pH decrease and total acid production. For the experimental conditions used, no significant differences were detected between the methods. The effect of spray drying on the cell membrane of Lactobacillus bulgaricus was studied. Five separate methods were used to study the theory that spray drying causes cell membrane damage; three relating to leakage of intracellular components from the cell into the surrounding environment (260 and 280 nm absorbing materials, potassium ions and proteins); and two relating to increased cell permeability (increased sensitivity to NaCl and increased permeability to o ‐nitrophenyl‐β‐D‐galactopyranoside (ONPG). Partial loss of some cytoplasmic material from the damaged cells was observed. The dried cells also became sensitive to NaCl and permeable to ONPG. Heat shock increased the survival of exponential cells as compared to controls but did not result in normal levels found with unshocked stationary phase cells. Heat shock had no effect on stationary phase cells. Different rehydration methods and media were investigated: slow rehydration increased survival.
X‐ray diffraction studies of interdiffusion in InPGaP powder blends (1989)

Abstract Interdiffusion in the InPGaP solid solution system is investigated by means of X‐ray diffraction of annealed powder blends. An activation energy of Q = (3.15 ± 0.3) eV for the interdiffusion process in the temperature interval 650… 725 °C was found. Diffusion parameters obtained by means of this method for InPGaP and InAsGaAs are discussed on the basis of lattice and atomic characteristics.
Current use of laser technology for build-up welding applications (2011)

S.231-233
A Practical Approach to Transesophageal Echocardiography 3/e (2013)

A Practical Approach to Transesophageal Echocardiography 3/e - Libros de Medicina - Ecocardiografia - 97,00
Prognostic Value of Radiology for Lung Cancer (1972)

Prognostic Value of Radiology for Lung Cancer Get access Kenneth P. Duncan Kenneth P. Duncan Chief Medical Officer, British Steel Corportaion Search for other works by this author on: Oxford Academic PubMed Google Scholar Occupational Medicine, Volume 22, Issue 1, 1972, Pages 76–78, https://doi.org/10.1093/occmed/22.1.76 Published: 01 January 1972