gebhart/patrepeval huggingface dataset:
Computational studies of acid sites in ZSM 5: dependence on cluster size (1992)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComputational studies of acid sites in ZSM 5: dependence on cluster sizeH. V. Brand, L. A. Curtiss, and L. E. ItonCite this: J. Phys. Chem. 1992, 96, 19, 7725–7732Publication Date (Print):September 1, 1992Publication History Published online1 May 2002Published inissue 1 September 1992https://doi.org/10.1021/j100198a044RIGHTS & PERMISSIONSArticle Views302Altmetric-Citations111LEARN 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 (969 KB) Get e-Alerts
Measurement of the backscatter from two pressure-release spheres using a near-field measurement system (2000)

The backscattering of sound by two pressure-release spheres was studied using a near-field measurement system (NFMS) based upon the near-field calibration array (NFCA) concept developed by Trott and Van Buren. The NFMS consists of a planar near-field transmit array (NFTA) consisting of 34 real-shaded line elements comprised of 26 hydrophones and a synthetic cylindrical aperture near-field receive array (SA-NFRA) consisting of a single line element comprised of 26 hydrophones. The line elements of the NFTA were shaded to obtain a volume of plane wave uniformity of 1 m3 in front of the NFTA. The synthetic aperture was formed by moving the single line element with a precision positioning system. The total acoustic pressure field was measured by the SA-NFRA. Since the incident pressure and the scattered overlapped in the time domain, background subtraction was used to obtain the scattered pressure. Far-field scattered beam patterns for the SA-NFRA were formed using the NFCA concept to extrapolate near-field measurements to the far field. Three configurations of pressure-release spheres were studied: a single sphere, two spheres arranged perpendicularly to incident field, and two spheres arranged parallel to the incident field. Experimental and numerical model results will be presented as well as NFTA uniformity measurements.
ChemInform Abstract: GERMANIUM‐DOPED GAAS FOR P‐TYPE OHMIC CONTACTS (1974)

Abstract Ohmsche Kontakte zu Ge‐dotierten p‐GaAs‐Schichten mit Trägerkonzentrationen von 4 bis 8 ‐ 1019 cm ‐3 werden ohne diffundierte Zn‐Kontaktschicht erhalten: Die Trägerkonzentration variiert mit dem Ge‐Gehalt.
Serum levels of des-?-carboxy prothrombin measured using the revised enzyme immunoassay kit with increased sensitivity in relation to clinicopathologic features of solitary hepatocellular carcinoma (2000)

BACKGROUND Des-γ-carboxy prothrombin (DCP) is an established marker for hepatocellular carcinoma (HCC), but the conventional enzyme immunoassay (EIA) kit lacks adequate sensitivity. Thus, a revised EIA kit with increased sensitivity has been developed. In this kit, the sensitivity has increased while high specificity to HCC has been maintained. The authors have already reported the clinical usefulness of this revised EIA kit. In this study, they examined the serum levels of DCP measured by this revised EIA kit in relation to the clinicopathologic features of solitary HCC. METHODS Fifty-six patients with solitary HCC who underwent hepatectomy were studied. The relation between the greatest dimension and the histologic differentiation of HCC was investigated in these 56 patients, as were the serum levels of DCP measured by the revised EIA kit (Sensitive DCP), α-fetoprotein (AFP), and DCP measured by the conventional EIA kit (DCP). The cutoff value for Sensitive DCP was set at 40 mAU/mL, and the values for AFP and DCP were 20 ng/mL and 100 mAU/mL (0.1 AU/mL), respectively. RESULTS The positivity rates for Sensitive DCP, AFP, and DCP (n = 56) were 53.6%, 53.6%, and 35.7%, respectively, and the rate was 73.2% when Sensitive DCP was used in combination with AFP (Sensitive DCP + AFP). The positivity rates for these markers were as follows: 1) When the greatest dimension of HCC was more than 3 cm (n = 16) and less than 2 cm (n = 23), the rates were 81.3% and 30.4% for Sensitive DCP, 68.8% and 39.1% for AFP, 56.3% and 13.0% for DCP, and 93.8% and 56.5% for Sensitive DCP + AFP. 2) When HCC was moderately to poorly differentiated (n = 41) and well differentiated (n = 15), the rates were 68.3% and 13.3% for Sensitive DCP, 61.0% and 33.3% for AFP, 48.8% and 0% for DCP, and 85.4% and 40% for Sensitive DCP + AFP. 3) When HCC was either more than 3 cm or moderately to poorly differentiated (n = 42) and either less than 2 cm or well differentiated (n = 27), the rates were 69.0% and 29.6% for Sensitive DCP, 61.9% and 37.0% for AFP, 47.6% and 11.1% for DCP, and 85.7% and 51.9% for Sensitive DCP + AFP. CONCLUSIONS DCP measured by the revised EIA kit with increased sensitivity has a stronger correlation than AFP with size and histologic differentiation of HCC. This Sensitive DCP is a very useful marker for HCC and should be used in combination with AFP. Cancer 2000;88:544–9. © 2000 American Cancer Society.
Renal Function and Bisphosphonate Safety (2007)

We thank Dr Ott and colleagues for their letter concerning our recently published paper “Alendronate Treatment in Women with Normal to Severely Impaired Renal Function: An Analysis of the Fracture Intervention Trial”1. Dr Ott and colleagues note that that we have misinterpreted the Kidney Diseases Outcome Quality Initiative (K/DOQI) classification2; according to the K/DOQI classification, an estimated glomerular filtration rate (eGFR) of <30 ml/min is defined as “severe,” and in our manuscript we refer to an eGFR of <45 ml/min as severe. We recognize that using the same descriptive terms as in the KDOQI classification may be problematic. We attempted to avoid misinterpretation by clearly stating that we categorized creatinine clearance (CrCL) based on a modified Kidney Foundation classification (used in other manuscripts by our group3) and explicitly defined the eGFR we used: severe, <45 ml/min; moderately reduced, 45–59 ml/min; normal >60 ml/min. We chose to categorize CrCL in this manner because, as pointed out by Dr Ott and colleagues, very few women participating in the Fracture Intervention Trial had an eGFR of <30 ml/min. We agree that estimating lean body weight by bone densitometric measurements may have limitations—indeed, validation studies suggest that these measures may underestimate lean and fat mass4—but this was unlikely to have substantially influenced our results. We concur with Dr Ott and colleagues that kidney function and muscle mass decrease with aging; we make the same point in our manuscript. We are also in agreement that we were not able to show that alendronate is safe or effective in “severe” kidney disease. In our manuscript, we state “our findings suggest, among osteoporotic women with normal serum creatinine but reduced eGFR, alendronate is safe and effective.” We agree that further research into methods of treating bone disease in patients with chronic kidney disease (CKD) stages 4 and 5 are needed and look forward to larger and more rigorous histomorphometric studies of the effects of bisphosphonates among individuals with stages 2–5 CKD.
Tumor necrosis factor α-converting enzyme (TACE/ADAM17) mediates ectodomain shedding of the scavenger receptor CD163 (2010)

CD163 is expressed specifically in the monocyte/macrophage lineage, where it mediates uptake of haptoglobin-hemoglobin complexes, leading to metabolism of the oxidative heme molecule. Shedding of the CD163 ectodomain from the cell surface produces a sCD163 plasma protein, and a positive correlation is seen between the sCD163 plasma level and the severity of various infectious and inflammatory diseases. In the present analysis of the phorbol ester-induced shedding of sCD163 in CD163 cDNA-transfected HEK293 cells, we used metalloproteinase inhibitors and siRNA-mediated inhibition of metalloproteinases to identify TACE/ADAM17 as an enzyme responsible for PMA-induced cleavage of the membrane-proximal region of CD163. As TACE/ADAM17-mediated shedding of TNF-α is up-regulated in macrophages subjected to inflammatory stimuli, the present results now provide a likely explanation for the strong empirical relationship between the sCD163 plasma level and infectious/inflammatory diseases relating to macrophage activity.
Type 1 Receptor Tyrosine Kinase Profiles Identify Patients With Enhanced Benefit From Anthracyclines in the BR9601 Adjuvant Breast Cancer Chemotherapy Trial (2008)

Patients with HER2 amplified and those with HER1, HER2 FISH, or HER3-positive tumors did not benefit from the addition of epirubicin to CMF. Conversely, patients with HER2 nonamplified and HER1 through HER3-negative tumors showed significantly increased RFS and OS rates when treated with epi-CMF compared with CMF.
Platelets from diabetic pigs exhibit hypersensitivity to thrombin. (2008)

Responses of platelets from diabetic and diabetic-hyperlipidemic pigs were studied. Pigs were made diabetic with single dose of alloxan, which acts by selectively destroying insulin-producing pancreatic beta cells thus inducing type 1 diabetes. Pigs were kept for 1 or 12 wk, during which thrombin-induced aggregation was monitored in washed platelets. The platelets showed increased sensitivity to aggregation within 1 wk of induction of diabetes. Hyperlipidemia alone for 12 wk did not increase platelet hypersensitivity, but hyperlipidemia together with diabetes significantly increased thrombin-induced platelet aggregation. Because this hypersensitivity occurred in washed platelets, this characteristic appears to be independent of any contribution by plasma factors or other blood cells. The hypersensitivity of platelets from diabetic pigs correlated with decreased activity of mitogen-activated protein kinase. These studies offer the first evidence that platelet hyperactivity occurs during the early stages (within a week) of induction of diabetes in pigs and before manifestation of other cardiovascular problems.
A Fast DC Fault Detection Method Using DC Reactor Voltages in HVdc Grids (2018)

This paper proposes a fast dc short-circuit fault detection method for HVdc grids, which relies on the voltage across the dc fault-current-limiting reactor. In the proposed approach, primary detection uses only the single-terminal dc reactor voltage information and is shown to be able to identify the faulted line as well as the faulted pole within 1 ms. The backup detection is primarily required for high resistance faults and uses communication between the two sides of the line. Its speed is dependent on the travel time of signals between the two ends, but will operate, as shown in the paper, typically in 2 ms or less. The approach is justified using analytical calculations and exhaustively validated via electromagnetic transient simulation for pole-to-pole and pole-to-ground faults, different fault resistance, fault locations, and dc reactor values. The validation shows that the method is able to identify all genuine dc line faults, but is not prone to misoperation with ac line faults, different loading levels, and so on.
La Sierra de Cártama: Pliegue con actividad reciente en las Béticas Occidentales (Hoya de Málaga) (2001)

In this work is shown how an active fold (the Sierra de Cartama fault) is marked by the drainage pattern and topography, besides of structural data. The Sierra de Cartama fold is an asymmetric fold with double plunge and determines the shape of an elongated saw in the Western Betic Chains (South of Spain). Watching the drainage patterns, it can be noticed how streams and creeks round the saw. The uplift of the saw raise the valleys steeply, even leaving a hanging valley ("wind gap ") at the western part of the structure. Regarding to these observations, the lateral propagation of the fold seems to be toward the west.\n\nThe proposed structure implies the existence of a compressive neotectonic activity in the zone. The compressive horizontal direction is N10e-30eW, perpendicular to the fold axis. In this tectonic environment it could be possible to interpret a reverse fault in deep associated with the fold growth
The Effects of Converging and Diverging Axial Taper on the Rotordynamic Coefficients of Liquid Annular Pressure Seals: Theory Versus Experiment (1995)

Abstract Experimental results are compared to predictions for turbulent flow, short (D = 76.2mm, L/D = .17), smooth annular seals with converging and diverging axial taper. Results are presented for four geometries: two convergent, two divergent, and a constant-clearance. Measurements were taken at seal pressure differentials and shaft rotation rates ranging from 1.34 to 3.54 MPa and 10,200 to 24,600 rpm, respectively. Measurements parameters include leakage, direct stiffness, cross-coupled stiffness, and direct damping coefficients. Results show that direct stiffness generally increases with converging axial taper and decreases with diverging axial taper. Direct damping and cross-coupled stiffness were shown to decrease with increasing convergent or divergent taper. Measured damping values increase with increased running speed and decreasing average clearance. Theoretical predictions for rotordynamic coefficients are in good overall agreement with measured results. The theory consistently underpredicts leakage by ranges of 10 ∼ 30%. The accuracy of predictions for leakage and rotordynamic coefficients was not influenced by running speed.
Incommensurate high-pressure and high-temperature structures in group VI elements (2006)

In this paper we provide a review of the revolution that has taken place over the past few years in our ability to produce and exploit ultra-bright, ultra-short pulses of X-radiation. For some time, nanosecond and picosecond optical lasers have been used to generate K-shell line radiation to interrogate rapid structural changes in matter. A good example of such work is the recent observation of the shock-induced alpha-epsilon transition in iron. [1] However, relatively small femtosecond lasers are now routinely used to produce bursts of X-rays with pulse-lengths of a few hundred femtoseconds. Such systems can be used to study rapid changes in materials -for example the atomic motion in both coherent acoustic and optical phonons have been directly followed.[2] Sub-bunch-length temporal resolution can also be achieved on third generation sources, either by use of streak-cameras to get to picosecond timescales, [3] or by laser-slicing to achieve 100-fsec resolution. [4] Within the next few years hardX-ray free-electron lasers (FELs) will come on line. These systems, with X-ray pulse-lengths of order 100-fsec, will have spectral brightnesses ten orders of magnitude greater than any extant synchrotron. [5] They will be fully spatially coherent, and temporal coherence can easily be achieved by spectral filtering. Such systems will have many unique applications, and considerable effort is already being devoted to designing experiments to enable diffraction from single bio-molecules.[6] An ability to obtain in a direct manner structural information from molecules that do not crystallize clearly has wide-ranging applications. The non-lasing precursor to such sources the short pulse photon source at Stanford has already produced remarkable results, with the shortest X-ray bursts yet produced being used to follow non-thermal melting in laser-irradiated semiconductors.[7] We also note that once the pulse lengths of the X-rays, and/or the time-scales of the phenomena of interest, start to become comparable with an extinction-depth traversal time, the diffraction process itself becomes time-dependent.[8]
FRACTURED BRIDGE SUPPORTS STABILIZED UNDER TRAFFIC (1979)

Masonary abutments for a steel truss bridge on a mountain main line in western Canada fractured because of displacements of the supporting rock. Analysis of the fractures in the granite and method for anchoring this rock at a remote site are described.
F-11334s, New Inhibitors of Membrane-bound Neutral Sphingomyelinase. (1999)

Ceramide, the product of sphingomyelin hydrolysis by neutral pH-optimum and magnesium-dependent sphingomyelinase (N-SMase), has been reported to increase in response to several inflammatory stimuli, including TNFa and IL-l/J and to play an important role in such stimulimediated physiological and pathological processes1~9). Intervention of the ceramide production, therefore, might
A validity study of the conceptual level analogies test (1990)

Journal Article A validity study of the conceptual level analogies test Get access R.W. Nelson, R.W. Nelson Silver Spring, MD and Lafayette Clinic Search for other works by this author on: Oxford Academic PubMed Google Scholar R.F. Lewis R.F. Lewis Silver Spring, MD and Lafayette Clinic Search for other works by this author on: Oxford Academic PubMed Google Scholar Archives of Clinical Neuropsychology, Volume 5, Issue 2, 1990, Page 201, https://doi.org/10.1093/arclin/5.2.201a Published: 01 April 1990
Meta Analysis of the Clinical Efficiency of Gangliosides on Children With Cerebral Palsy. (2009)

Objective
To evaluate the efficiency of gangliosides(GM-1) in the treatment of cerebral palsy (CP).


Methods
Eligible studies were identified by searching Cochrane library, MedLine, CNKI and VIP. No language restrictions were applied. Two reviewers assessed the quality of included studies and extracted data and processed meta-analysis. All randomized and quasi-randomized trials comparing treatment with and without gangliosides with clinical endpoints were reviewed. Development quotient(DQ) was measured by Gesell. RevMan 4.3.2 was used to do the statistical analysis.


Results
Four trials involving 325 patients with cerebral palsy were included. All trials were case-control trials. Meta analysis indicated that using the gangliosides could alter the symptoms and signs for the better [RR=1.24, 95%CI(0.95, 1.62)], and developmental quotient values increased [RR=1.20, 95%CI(1.06, 1.36)], and there were statistic significance.


Conclusion
Gangliosides combined with other treatments can improve the manifestations and developmental quotient of cerebral palsy. However, due to all included trials are not randomized trial controlled (RTC), and numbers of patients of these trials are relatively small, more well-designed multi-center randomized controlled trials should be performed.


Key words: 
gangliosides(GM-1); cerebral palsy(CP); meta-analysis; clinical efficiency; systematic evaluation
Theory of quantized Hall effect at low temperatures (1983)

At millikelvin temperatures the quantized Hall effect (QHE) is characterized by sharp steps connecting the quantized Hall resistance plateaus. We explain this behavior on the basis of the single-electron approximation and continuum percolation theory. It is shown that even when the magnetic field corresponds to partially filled Landau level on average, locally the sample breaks into patches having the occupation numbers 0 or 1. This represents a peculiar type of the metal-insulator transition, driven by disorder. Extended (global) electron states may not exist at equilibrium or arbitrarily small applied voltage $V$. Global states begin to appear at a certain critical voltage ${V}_{\mathrm{cr}}$, which is of the order of characteristic magnitude of potential fluctuations on the scale of the sample size. For small $V>{V}_{\mathrm{cr}}$ the fraction of global states is still small owing to the smallness of the average electric field compared with the fluctuating field in the inversion layer. Because of this, transitions between the QHE plateaus require only a minor change in the density of states and at $T=0$ they occur in small intervals of the magnetic field. Owing to the tail of the Fermi-Dirac distribution at nonzero $T$ the deviation of the Hall conductivity from its nearest quantized value, $(\frac{{e}^{2}}{h})\ifmmode\times\else\texttimes\fi{}\mathrm{integer}$, is activated. This explains the plateau flatness and the high precision of the QHE measurements of the fine-structure constant.
THE PERFORMANCE IMPROVEMENT OF THZ ANTENNA VIA MODELING AND CHARACTERIZATION OF DOPED GRAPHENE (2016)

The improvement of Terahertz (THz) antenna requires efficient (nano)materials to operate within the millimeter wave and THz spectrum. In this paper, doped graphene is used to improve the performance of two types of patch antennas, a rectangular and an elliptical antenna. The surface conductivity of conventional (non-doped) graphene is first modeled prior to the design and simulation of the two graphene based antennas in an electromagnetic solver. Next, different graphene models and their corresponding surface conductivities are computed based on different bias voltages or chemical doping. These configurations are then benchmarked against a similar antenna based on conventional metallic (copper) conductor to quantify their levels of performance improvement. The graphene based antennas showed significant improvements for most parameters of antenna than that of the conventional antenna. Besides that, the higher chemical potentials resulting from higher biasing voltages also resulted in this trend. Finally, the elliptical patch graphene antenna indicated better reflection performance, radiation efficiency and gain than a rectangular patch operating at the same resonant frequency.
Multiwatt high-efficiency CW single-mode visible lasers for ultrahigh-resolution displays (2009)

An ultrahigh-resolution display (~ 33 megapixels) employs high-power CW visible lasers which are generated through three-wave external mixing of infrared fiber lasers. The lasers provide > 6 W at red, green and blue wavelengths.
Preliminary Investigation into Some Engineering Characteristics of Loblolly Pine Trees (1988)

ABSTRACT Asample of 25 loblolly pine trees {Pinus taeda L.) was measured to determine characteristics useful in the design and analysis of forestry equipment. Diameter-length relationships, mass, center of gravity, mass moment of inertia and bending deflection were investigated. The regression of dimensionless diameter on dimensionless length produced a relationship to predict diameter at any point along the bole. By integrating appropriate functions containing the diameter relation, expressions to predict tree-length center of gravity, mass and mass moment of inertia were developed. Predicted values (for study trees) showed good agreement with experimentally measured values. Modulus of elasticity along the axis parallel to the grain was derived for each tree bole from bending test data and an iterative finite element analysis program. Test results showed reasonable agreement with published values for small clear-wood specimens.