gebhart/patrepeval huggingface dataset:
Isolation and structure of the fluxional phosphine complex (.eta.3-PR3)Mo(CO)3 (R = 2,4,6-trimethoxyphenyl) (1990)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIsolation and structure of the fluxional phosphine complex (.eta.3-PR3)Mo(CO)3 (R = 2,4,6-trimethoxyphenyl)K. R. Dunbar, S. C. Haefner, and D. J. BurzynskiCite this: Organometallics 1990, 9, 4, 1347–1349Publication Date (Print):April 1, 1990Publication History Published online1 May 2002Published inissue 1 April 1990https://pubs.acs.org/doi/10.1021/om00118a082https://doi.org/10.1021/om00118a082research-articleACS PublicationsRequest reuse permissionsArticle Views58Altmetric-Citations11LEARN 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-AlertscloseSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts
Color planning by fuzzy set theory (2003)

The authors propose a system to plan a color arrangement in interior space such as rooms and offices. The system is based on three main processes: a determination process of dominant colors, a determination process of harmony colors, and an adjustment process of the resultant colors. In the first process, the dominant color of the interior space is determined from the linguistic representation of the users image for this space by fuzzy set theory. In the second process, the harmony colors for the dominant color are calculated by P. Moon and D. E. Spencer-Spencer's harmony theory, taking into account the area effect and linguistic inputs. If users cannot satisfy the resultant colors represented on a CRT display, the system can adjust the resultant colors to the user's favorite color by linguistic representation in the final process.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Infiniband scalability in Open MPI (2006)

Infiniband is becoming an important interconnect technology in high performance computing. Efforts in large scale Infiniband deployments are raising scalability questions in the HPC community. Open MPI, a new open source implementation of the MPI standard targeted for production computing, provides several mechanisms to enhance Infiniband scalability. Initial comparisons with MVAPICH, the most widely used Infiniband MPI implementation, show similar performance but with much better scalability characteristics. Specifically, small message latency is improved by up to 10% in medium/large jobs and memory usage per host is reduced by as much as 300%. In addition, Open MPI provides predictable latency that is close to optimal without sacrificing bandwidth performance.
Suppression of Ventricular Arrhythmias After Coronary Artery Ligation by Pinacidil, a Vasodilator Drug (1985)

Pinacidil, a new vasodilator compound, has been shown to lower blood pressure in animals and humans by a direct vasodilator effect. We have studied the effects of pinacidil on experimental cardiac arrhythmias in dogs. Pinacidil did not exhibit antiarrhythmic activity on ouabain-induced arrhythmias. In contrast, verapamil had minor antiarrhythmic activity on the ouabain arrhythmia, restoring sinus rhythm in one-third of the dogs studied. Pinacidil suppressed the arrhythmia present 22-24 h after coronary artery ligation at doses which produced a significant reduction in mean arterial pressure. The antiarrhythmic action of pinacidil was not modified by pretreatment with propranolol but appeared to be blunted by the infusion of the alpha-agonist, phenylephrine. Other hypotensive agents, hydralazine and sodium nitroprusside, although producing similar reductions in mean arterial pressure to pinacidil, did not exhibit a consistent antiarrhythmic action in dogs 22-24 h after coronary artery ligation. The calcium antagonist verapamil did not display antiarrhythmic activity on this model. The mechanisms by which pinacidil exerted an antiarrhythmic action have not yet been elucidated. The results of the present study suggest that further studies with pinacidil on myocardial infarct size, myocardial perfusion, and experimental cardiac arrhythmias would be advantageous.
Nationwide questionnaire survey of the contemporary surgical management of pancreatic cancer in the United Kingdom & Ireland (2006)

This paper reports the results of a questionnaire-based survey of pancreatic surgical specialists in the United Kingdom addressing aspects of staging, resection volume and outcome. A postal survey was undertaken of the 517 members of the Association of upper Gastrointestinal Surgeons of Great Britain and Ireland (AUGIS). 57 surgeons undertook pancreatic resection from 162 overall respondents. Cross-checking with the list of members of the Pancreatic Society of Great Britain and Ireland yielded 64 pancreatic surgeons. 734 pancreaticoduodenectomy (PD) were reported by respondents compared with 822 procedures according to Government maintained Hospital Episode Statistics. The modal resection volume performed per annum was 6-10. There were 24 in-hospital deaths in 732 resections (3%) mortality. For individual respondents the modal percentage mortality was 5% (0 to 16%). All clinicians with mortality rates in excess of 10% did less than 10 resections per annum. Respondents favoured "amylase rich discharge beyond 7th post-operative day" as optimal for definition of post-resection pancreatic fistula. Accepting the limitations of questionnaire surveys, the results provide an important overview of pancreatic surgical practice: pancreaticoduodenectomy is carried out by a range of specialists, lower volume resectionists appear to have poorer outcomes and this study shows widespread agreement on optimum terminology for post-operative pancreatic fistula.
The NKG2D-Activating Receptor Mediates Pulmonary Clearance of<i>Pseudomonas aeruginosa</i> (2006)

The NKG2D-activating receptor is expressed on cytotoxic lymphocytes and interacts with ligands expressed on the surface of cells stressed by pathogenic and nonpathogenic stimuli. In this study, we investigated the physiologic importance of NKG2D receptor-ligand interactions in response to acute pulmonary Pseudomonas aeruginosa infection. P. aeruginosa infection increased the expression of mouse NKG2D ligands (Rae1) in airway epithelial cells and alveolar macrophages in vivo and also increased the cell surface expression of human NKG2D ligands (ULBP2) on airway epithelial cells in vitro. NKG2D receptor blockade with a specific monoclonal antibody inhibited the pulmonary clearance of P. aeruginosa. NKG2D receptor blockade also resulted in decreased production of Th1 cytokines and nitric oxide in the lungs of P. aeruginosa-infected mice. Additionally, NKG2D receptor blockade reduced the epithelial cell sloughing that accompanies P. aeruginosa infection. Macrophage phagocytosis and bronchoalveolar lavage cellularity were not different in P. aeruginosa-infected mice with and without NKG2D receptor blockade. These results demonstrate the importance of NKG2D-mediated immune activation in the clearance of acute bacterial infection and suggest that epithelial cell-lymphocyte interactions mediate pulmonary cytokine production, epithelial cell integrity, and bacterial clearance.
Intra-Aneurysmal Flow With Helix and Mesh Stent Placement Across Side-Wall Aneurysm Pore of a Straight Parent Vessel (2004)

Pulsatile flow fields in a cerebrovascular side-wall aneurysm model with a wide ostium after stenting are presented in terms of particle tracking velocimetry measurements and flow visualization. Among the stent parameters the shape, helix versus mesh, was selected to study its effect on the changes of intraaneurysmal hemodynamics for the reference of minimally invasive endovascular aneurysm treatment. The blocking ratio of the stents was fixed at 30%. The Womersley number was 3.9 and the mean, peak, and minimal Reynolds numbers based on the bulk average velocity and diameter of the parent vessel were 600, 850, and 300, respectively. Four consecutive flow-rate phases were selected to characterize the intra-aneurysmal flow. The results are characterized in terms of velocity vector field, regional average velocity, and intra-aneurysmal vorticity/circulation/wall shear stress. It is found that the hemodynamic features inside the aneurysm alter markedly with the shape of the stent and the size of the orifice. Both stents investigated induce favorable changes in the intra-aneurysmal flow stasis as well as direction and undulation of wall shear stresses. A comparison of the results of the helix to mesh stent shows that the former is more favorable for endovascular treatment.
A visual feedback control system for tracking and zooming a target (2003)

The authors describe an adaptive sensing system with tracking and zooming for a moving object in a time varying environment. Two algorithms, the close contour mating technique and the effective determination of zoom ratio by fuzzy control, are proposed for achieving the sensing system. The estimation of objective feature parameters, two-dimensional velocity and size, is based on close contour matching. First, the correspond problem is solved by using cross-correlation in projection which is abstracted from the contours of the object in the specialized difference image. Closely shifting and matching the contours eliminates the occluded contours as well as noise. To zoom the tracked object in accordance with the state of its shape or movement, fuzzy control is considered. Three sets of input membership functions, the confidence of object shape, the variance of object velocity, and the object size, are evaluated based on fuzzy rules for controlling the focus length of the sensor. Experimental results show that the proposed system is robust and valid for numerous kinds of moving objects in real scenes with a system period of 1.85 s.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Asphaltene Aggregation from Crude Oils and Model Systems Studied by High-Pressure NIR Spectroscopy (2002)

The aggregation of asphaltenes by pressure depletion both in a live crude oil and model systems of asphaltenes in toluene/pentane solvents is studied. Near-infrared spectroscopy utilizing a high-pressure NIR cell with a maximum operating pressure of 325 bar is used to study the onset of asphaltene aggregation. The NIR spectra are subject to a principal component analysis (PCA) in order to detect the asphaltene aggregation onset pressure. The effect of fluid compressibility on the NIR spectra is also demonstrated. The aggregation behavior of asphaltenes in model systems is shown to resemble the aggregation behavior for the crude oil. However, while the asphaltene aggregation in the crude oil is more or less completely reversible with repressurization, indications of only a partial redissolution are seen in the model systems. The kinetics of the redissolution is quite slow. A time of 72 h to equilibrate at the original pressure of 300 bar was required to redissolve the asphaltene aggregates formed within the crude oil by depressurization of the sample. Near-infrared spectroscopy in combination with principal component analysis is shown to be an efficient tool in detecting both bubble points and asphaltene aggregation onset pressures in high-pressure systems.
Mushrooms: poisons and panaceas. (1995)

Mushrooms Poisons and Panaceas , Mushrooms Poisons and Panaceas , کتابخانه دیجیتال جندی شاپور اهواز
Statistics review 4: sample size calculations. (2002)

The present review introduces the notion of statistical power and the hazard of under-powered studies. The problem of how to calculate an ideal sample size is also discussed within the context of factors that affect power, and specific methods for the calculation of sample size are presented for two common scenarios, along with extensions to the simplest case.
ChemInform Abstract: Synthesis of 2‐Amino‐3‐boronopropionic Acid: A Boron‐Containing Analogue of Aspartic Acid. (1987)

Abstract Coupling of the chloromethylboronic ester (I) with diethyl malonate (II) and subsequent partial saponification yield the dioxaborolanylmethylmalonic monoester (V).
The improved data encryption standard (DES) algorithm (2002)

The cryptosystem which is most used throughout the world for protecting information is the Data Encryption Standard (DES) which was announced by the National Bureau of Standard (NBS). The DES must be stronger than the other cryptosystems in its security. But, because the process time required for cryptanalysis has lessened, and because hardware technique has developed rapidly, the DES may be attacked by various kinds of cryptanalysis using parallel process. It may be especially vulnerable to attack by differential cryptanalysis. Therefore, the DES will require strengthening to ensure cryptographic security in the days to come. This paper proposes design of a DES-like cryptosystem called the Improved-DES. The Improved-DES is a new algorithm. We show that the Improved-DES is stronger than the DES against differential cryptanalysis for cryptographic security. We will divide one data block (96 bits) into 3 sub-blocks of 32 bits and then perform different f functions on each of the 3 sub-blocks, and then increase the S/sub 1/-S/sub 8/ of the S-boxes to S/sub 1/-S/sub 16/, satisfying the strict avalanche criterion (SAC: p/sub i, j/) and the correlation coefficient (p/sub i, j/). Finally we will increase the key length to 112 bits. The analysis will show that the unicity distance (UD) in the Improved-DES is increased more than the DES's UD.
Attenuation predictions at extremely low frequencies for measurement-while-drilling electromagnetic telemetry system (1993)

Extremely low frequencies (ELFs) are employed to transmit data from underground to the ground surface in the measurement-while-drilling electromagnetic (MWD-EM) telemetry system. Based on electromagnetic field theory, the present work is aimed at predicting the receivability of the signals at the surface. A unified analytic method that is suitable for vertical, directional, or horizontal wells is presented. Attenuation properties are examined for various parameters, including the Earth's conductivity, operating frequency and the length of the drill string. The frequency dependence of the receivability in reference to a noise level is illustrated for different depths of well and different cases. It is also demonstrated that the electric field distributions at the surface have the same features for the three types of well, and that the measurements should be carried out near the well heads for any type of well. A scale model experiment is made to test the authors' theoretical results. The measured data and the computed results are comparable.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Of human bondage (2014)

One of the wealthiest and most popular authors of the twentieth century was a doctor. His best known book included some vivid accounts of his experiences as a medical student. It is a masterpiece, but also provides the richest first-hand description we have of medicine in late Victorian London and is worth reading for that reason alone. William Somerset Maugham was born in 1874 into a family of lawyers, but decided to study medicine at St Thomas' Hospital, qualifying in 1897. He had already published his first novel and had decided to give up medicine. By the time he was 40, he had published ten books, while ten of his plays had been produced on the London stage. After working as a British spy in Switzerland and Russia during the First World War, he continued as a prolific writer of novels and short stories, mainly describing colonial life in Asia and the Pacific. By the 1930s, his earnings from writing, together with shrewd investments in the stock market and paintings, made him the richest author in the world. At the height of his fame, virtually every literate person in Britain would have read his works and known about his flamboyant life style.1
Regulation of interleukin 1 and its receptor in human keratinocytes. (1989)

Keratinocytes in culture synthesize and respond to interleukin 1 (IL-1). We have measured surface IL-1 receptor (IL-1R) on keratinocytes in culture using radiolabeled IL-1 binding assays. Surface IL-1R levels are less than 2000 receptors per cell in postconfluent cultures but increase 9- to 20-fold 24 hr after treatment with phorbol 12-myristate 13-acetate (PMA) at 10 ng/ml or after raising the extracellular Ca2+ concentration to 2 mM. This induction of surface IL-1R can be blocked by the addition of retinoic acid and parallels induction of squamous differentiation markers. These results imply that IL-1R levels may be related to the degree of differentiation of these cells. In parallel studies IL-1 protein levels were determined by bioassay and by Western blotting (immunoblots). All detectable IL-1 protein and essentially all IL-1 activity was cell-associated. Although constitutive levels of IL-1 biological activity and protein are significant in these cultures, IL-1 levels increase when either PMA or retinoic acid alone are added to cultures. IL-1 does not increase when PMA and retinoic acid are added simultaneously to cultures; nor is it induced when extracellular Ca2+ concentrations are raised to 2 mM. Thus, cell-associated IL-1 levels do not necessarily parallel surface IL-1R levels in these cultures. Taken together, these results demonstrate that IL-1 and surface IL-1R levels are differentially and complexly regulated in keratinocyte cultures. Possible implications of these results in terms of normal and abnormal regulation of proliferation and differentiation are discussed.
Optimized single site update algorithms for image deblurring (2002)

We present optimized algorithms for image deblurring in the case of a separable point spread function (PSF). Our work is in the usual context of Bayesian estimation with Gibbs random fields (GRF). The derived algorithms fall into the class of single site update algorithms (SSUAs), which exhibit a high convergence rate per iteration and small memory requirements, while hard domain constraints such as positivity are easily introduced. On the other hand, standard forms of SSUAs rapidly become intractable when the size of the PSF is large. We show how PSF separability can benefit the SSUAs, in order to reduce the cost of each pixel update from O(2pq) to O(p+q) (p/spl times/q is the size of the PSF). We show that the resulting deterministic SSUA compares very favorably with global update algorithms (GUAs). The new separable form can also benefit other SSUAs, especially stochastic versions such as simulated annealing (SA) and Monte Carlo Markov chain (MCMC) algorithms.
ChemInform Abstract: Low‐Temperature Solution Route to Molybdenum Nitride. (1999)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Mapping Cerebrovascular Reactivity Using Blood Oxygen Level-Dependent MRI in Patients With Arterial Steno-occlusive Disease (2008)

Arterial spin labeling MRI confirms that, even in patients with stenoocclusive disease, the BOLD MRI signal response to hypercapnia predominantly reflects changes in cerebral blood flow.
Complete nucleotide sequence of the gene for human C1 inhibitor with an unusually high density of <i>Alu</i> elements (1991)

The complete (17159 bp) nucleotide sequence of the gene for the human C1 inhibitor has been determined. The transcription initiation site was examined by primer extension using human liver mRNA, and the messenger 5'-end sequence was determined on clones obtained by the anchored polymerase chain reaction. The gene of this serpin molecule is split by seven introns, with junctions of phases zero and one. An outstanding feature of the intron sequences is the occurrence of 17 AluI repeats of all four ancestral subgroups, indicating that the gene has been invaded during consecutive waves of Alu amplification, including a recent one. These Alu repeats form the sites of deletion and insertion in several known lesions in the C1-inhibitor gene. There is no obvious promoter site of the TATA-box type at the 5' end of the gene, but instead it contains a region of potential H-DNA structure similar to that found upstream of the human c-myc gene.
The Perception of Wakefulness Within Sleep (1981)

We studied the relationship between electroencephalographic (EEG)-defined awakenings and subjects' awareness of them at the time of their occurrence in 40 men (mean age, 55.3 years). The subjects used a push-button device to signal wakefulness during an evening's sleep in the laboratory; continuous EEG and electro-oculograms were also made. Results were as follows (after eliminating data for 12 nonresponders): 52% of the responses occurred during EEG-defined wakefulness (stage 0), 12% in a sleep stage that was followed immediately by stage 0, and 36% in a sleep stage not followed by stage 0. However, analysis of the last finding indicated that 73% of these responses were associated with at least 4-6 sec of preceding alpha activity. Thus, signals in the absence of EEG criteria were actually less than 10% of the total recorded. Signals of wakefulness were closely associated with the onset of EEG-defined wakefulness (and 84% of the signals occurred within 4 sec to 1 min of the EEG period). We conclude that self-signaled arousals deserve consideration in clinical analyses in which reports of arousals are a part of the reported sleep disturbance.
Idiosyncratic Pharmacokinetics Complicating Treatment of Major Depression in an Elderly Woman (1985)

A 64-year-old woman with major depression developed toxic symptoms while on a regimen of 150 to 200 mg/day of desipramine. Her elimination half-life for desipramine was found to be greatly prolonged, at approximately 150 hours. Her ability to metabolize diphenhydramine and lorazepam was found to be impaired as well. Study of the elimination kinetics of desipramine in three of the patient's sisters provided some support for the existence of a genetically determined metabolic defect. Knowledge of those idiosyncratic pharmacokinetics had important implications for diagnosis and treatment in this case.