gebhart/patrepeval huggingface dataset:
Hybrid Finite Element Methods for Array and FSS Analysis Using Multiresolution Elements and Fast Integral Techniques (2002)

Hierarchical mixed-order tangential vector finite elements (TVFEs) for tetrahedra are attractive for accurate and efficient analysis of a wide class of electromagnetic radiation and scattering problems. They provide versatile geometrical modeling and accurate field representation by allowing combination of lowest and higher order TVFEs. In this paper, the finite element-boundary integral method with hierarchical TVFEs for tetrahedra is used for analysis of infinite, doubly periodic antenna arrays. It is shown that accurate prediction of array scanning properties can be obtained by using higher order TVFEs in the regions where large fields and rapid field variations are expected and lowest order TVFEs elsewhere. This type of multi-resolution modeling is applied to several array configurations to demonstrate the accuracy and capabilities of the technique. Adaptive Integral Method (AIM) for the acceleration of the boundary integral is discussed and results regarding the speed-up are also given. Applications to multilayered frequency selective surfaces are also considered.
A reproducible method for growing nonlinear optical organic crystals (DAST) and excimer laser processing of DAST (2001)

Summary form only given. The organic nonlinear optical crystal DAST (4-dimethylamino-N-methyl-4-stilbazolium tosylate) has higher nonlinearities (such as the electro-optical and second-order nonlinear optical coefficients) than other similar crystals. This has sparked significant efforts to develop a crystal growth processing method and to use DAST in various optical devices. We investigated a reproducible crystal growth method that monitors the conductivity of the concentration of a saturated DAST solution. We also developed a processing method using KrF excimer laser ablation.
Study of beat-wave growth and saturation (1985)

Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation T. Tajima, R. N. Sudan; Study of beat‐wave growth and saturation. AIP Conf. Proc. 15 July 1985; 130 (1): 172–178. https://doi.org/10.1063/1.35296 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAIP Publishing PortfolioAIP Conference Proceedings Search Advanced Search |Citation Search
A nationwide cross-sectional survey on prevalence, management and pharmacoepidemiology patterns on hypertension in Chinese patients with chronic kidney disease (2016)

Limited data are available on epidemiology and drug use in Chinese hypertensive patients with chronic kidney disease (CKD). We determined the prevalence; awareness, treatment, and control rates of hypertension; anti-hypertensive use, expenditure pattern; and factors associated with hypertension prevalence and control in Chinese patients with CKD. This was one of the largest cross-sectional surveys that enrolled 6079 CKD participants (mean age, 51.0 ± 16.37 years) with or without hypertension from 22 centres across China. The prevalence, awareness, and treatment rates were 71.2%, 95.4%, and 93.7%, respectively. Control rates 1 and 2 (Blood pressure, BP <140/90 and <130/80 mmHg) were 41.1% and 15.0%, respectively. Patients were treated mostly with monotherapy (37.7%) or 2-drug anti-hypertensive combination (38.7%). Factors associated with prevalence of hypertension included age; smoking; body mass index; physical exercise; family history of hypertension; hyperuricaemia; and CKD. Control rate was associated with CKD stage, BP monitoring at home, and use of drug combinations. Despite high rates of awareness and treatment, the control rates are low. CKD stages 4 and 5 adversely affect the control rate. The results suggest the immediate need of comprehensive controlling measures to improve the control of hypertension in Chinese patients with CKD.
Pollution dispersion at complex street configurations: covered roadways (1998)

Dispersion of vehicular pollutants emitted from covered roadways is particularly important in describing and controlling local air quality conditions at many complex urban roadway geometries. We have conducted a joint measurement and numerical modelling study to describe, understand and simulate the kinematics of the atmospheric transport and dispersion processes, and to assess the representativeness of various numerical model simulations. The measurement program was conducted in an environmental boundary-layer wind tunnel and involved the controlled line-source release of a tracer gas (ethane, C2 H6) and subsequent in situ sampling of concentration fields. The covered section was open to one side; two aspect ratios (width to height) for the covered section were tested 3.6 and 7.2. With the open side of the covered section to leeward of the ambient flow, pedestrian-level concentrations were observed to be fairly uniform within the covered section and were an order of magnitude greater than those downwind. An abrupt transition zone exists at the trailing edge of the covered section. A Navier-Stokes model (Fluent) realistically simulated the major transport and dispersion characteristics. A simple Gaussian line source equation was also evaluated because its numerical analogues (e.g. CAL3QHC) are often used for regulatory applications involving similarly complex geometries. As expected, this approach does not yield representative results. However, using the Gaussian model with the measured concentrations, we are able to characterise the downwind profile of the vertical dispersion (sigma) function and quantify the enhanced dispersion in the transition zone.
Investigation of Injection Pressure Effects on Medium Speed Diesel Engine Emissions (2003)

As with most internal combustion engines, the locomotive diesel is subjected to increasingly stringent regulatory emissions standards. Currently, diesel electric freight locomotives are regulated by the Tier 1 emission standards that went into effect January 1, 2002 as ruled by the United States Environmental Protection Agency (EPA). Beginning January 1, 2005 the US EPA Tier 2 diesel locomotive emissions standards will become effective. To achieve the new emissions standards an extensive engine development program was initiated. This paper will present a portion of the development conducted on a single cylinder engine (SCE) investigating the effects of injection pressure on emissions. The experimental results are presented with a discussion of the possible mechanisms leading to the results with supporting evidence from existing literature and analysis. This paper will focus on the effect of injection pressure as generated by pump capacity and nozzle cup hydraulic flow.
Synthesis and Characterization of Expanded Smectites Containing Trinuclear Co Complexes (1999)

Several smectites were pillared with metal complexes, such as the trimeric cobalt cation [Co3(OC2H4NH2)6]3+ and its divalent analogue [Co3(OC2H4NH2)6]2+, containing clusters of one to three cobalt cations separated by bridging ligands. In pillared interlayered clays (PILC) prepared by reacting Na−montmorillonite with Co3(H2NCH2CH2O)6(ClO4) 3 solutions, pillar orientation is controlled by the trimer concentration in the interlamellar space. Initially the Co trimer (0.72 nm × 0.48 nm in size) lies parallel to the clay surface. Then as more trimer is introduced, it forms an angle of ∼48° relative to the clay surface that increases to 61° as the clay reached its highest Co loadings. FT IR and FT LRS spectra together with chemical analysis have been used to ascertain the presence of pristine trimer ions in all the PILC samples. XPS results indicate that reduction of the trivalent trimer to its divalent analogue [Co3(OC2H4NH2)6]2+ has occurred during PILC preparation. XRD patterns and molecular scale AFM images have revealed the presence of trimer molecules also on the clay external surface. Thermogravimetric analyses of [Co3(OC2H4NH2)6]3+ PILC are all qualitatively similar despite the variance in d spacing seen at different Co trimer loadings. Ligand decomposition occurs in two steps in the 250−450 °C temperature range. At T > 250 °C, ligand losses cause a total structural collapse of the pillared structure. In contrast, prior to 250 °C, the interlamellar expansion decreases and the trimer seems to adopt a position parallel to the clay surface. The d spacing changed very little over the temperature range where initial ligand losses occur. Partial decomposition of the trimeric complex can thus be achieved while a 0.45 nm layer expansion is maintained, indicating that these materials could be considered as cobalt catalysts for low temperature (T < 200 °C) applications.
Klinische Studie zur Wirksamkeit eines dexpanthenolhaltigen Tränenersatzmittels (Siccaprotect®) bei der Behandlung Trockener Augen (1996)

These data suggest that, in dry eyes, treatment with dexpanthenol-containing eye drops leads to a favorable and comparing with dexpanthenol-free eye drops superior improvement in disturbances of corneal epithelium permeability.
Adolescents' Perceptions of Family System Characteristics, Parent-Adolescent Dyadic Behaviors, Adolescent Qualities, and Adolescent Empathy (1996)

Carolyn S. Henry, David W. Sager, Scott W. Plunkett, Adolescents' Perceptions of Family System Characteristics, Parent-Adolescent Dyadic Behaviors, Adolescent Qualities, and Adolescent Empathy, Family Relations, Vol. 45, No. 3 (Jul., 1996), pp. 283-292
Infrared atomic oscillator strengths for the study of brown dwarfs and extra solar planets (2008)

The spectral opacity of cool dwarf stars, brown dwarfs and extra solar planets peaks at infrared (IR) wavelengths and is dominated by neutral atoms and molecules. However, the laboratory database for atomic oscillator strengths is not complete and lacks experimental data, which is a source of uncertainty for atmospheric models of sub-solar objects. The aim of our new laboratory studies is to determine accurate absolute oscillator strengths and apply them to the study of sub-solar mass objects. Our technique uses high-resolution Fourier transform spectroscopy to measure accurate branching fractions for atomic transitions, which are combined with measured radiative level lifetimes to yield oscillator strengths. We discuss the status of the IR laboratory atomic database and our measurements for neutral species in the visible and IR.
ChemInform Abstract: FLUORINATION OF 1,3‐DIENES WITH XENON DIFLUORIDE AND (DIFLUOROIODO)BENZENE (1985)

Abstract Aus den Dienen (I) erhält man bei der Fluorierung mit (II) oder (III) die isomeren Difluorverbindungen (IV) und (V) unter Eliminierung von Xenon oder lodbenzol.
Notes on Zygomycetes of Taiwan VIII: three new records of Absidia in Taiwan. (2010)

During an investigation of Taiwan Zygomycetes, Absidia cylindrospora var. nigra, A. heterospora, and A. pseudocylindrospora were isolated from soil samples and identified as new records of Taiwan. This study collected soil samples and herbivore's dung from all around the island. Identification of Absidia species was based on the optimal growth temperature and morphological characters such as colony color, spore size and shape along with number of sporangiophores per whorl. These three species are mesophilic fungi with optimal growth temperature around 25℃.
Synthesis of the Bycroft−Gowland Structure of Micrococcin P1 (1999)

[formula: see text] We describe the chemical synthesis of the accepted structure of micrococcin P1, a member of the thiostrepton group of antibiotics, and we show that this architecture does not correspond to that of the natural product. Methods developed during the present study should greatly facilitate ongoing efforts centering on the determination of the actual structure of microccin P1, in addition to being applicable to the synthesis of more complex thiostrepton congeners.
Gene expression and breast cancer mortality in Northern California Kaiser Permanente Patients: A large population-based case control study (2005)

603 Background: The 21 gene Recurrence Score (RS) assay (Oncotype DX) has been validated to quantify the risk of distant recurrence in tamoxifen-treated (tam+) pts with N-, ER+ breast cancer (BC) (Paik et al, NEJM, 2004). The relation between gene expression and BC mortality in a community hospital setting for ER+ tam+ pts, as well as for tam- and ER- pts, was not known. Methods: We conducted a nested case-control study in BC pts diagnosed from 1985–94 at 14 Kaiser hospitals. Eligibility included negative nodes, age < 75 yrs, and no chemotherapy. Cases died of BC prior to 2002. Up to 3 controls were matched to each case on age, race, tam treatment, facility, diagnosis yr, and follow-up time. Using pre-specified methods, archived tumor tissue was analyzed using the RT-PCR 21 gene expression assay and RS algorithm. Pre-specified primary and secondary endpoints were analyzed by conditional logistic regression to estimate the association between gene expression (for RS, proliferation gene group score, and individual genes, including ER and PR) and BC death, while controlling for tumor size, grade, and confounding variables. Results: Among 4964 potentially eligible BC pts, we identified 220 cases and 570 matched controls. Median age was 59 yr (range 28–74); 30.9% were tam+ (mostly after 1988). Median follow-up time was 4.9 yrs for cases (time to death) and 12.9 yrs for controls. RS was significantly associated with BC death in ER+ pts treated with or without tam (p=0.002). Gene expression for ER and PR had different associations–ER expression was associated with mortality in the ER+ tam+ pts (p = 0.003), but not the ER+ tam- pts (p=0.26), and was predictive of tam benefit but not of prognosis. PR was associated with mortality in the ER+ tam- pts (0.004), and was strongly prognostic. Among both ER+ tam- pts and ER- pts, those with high proliferation gene group scores had over 6 times the risk of BC death compared to those with low scores (p=0.001). Conclusion: A large population-based study from 14 Northern California hospitals demonstrates the Recurrence Score is independently associated with breast cancer mortality, and is both prognostic and predictive. Author Disclosure Employment or Leadership Consultant or Advisory Role Stock Ownership Honoraria Research Funding Expert Testimony Other Remuneration Genomic Health Genomic Health Genomic Health
Effect of hot-wire on microstructure and mechanical property in weld metal formed with CO2 gas shielded arc welding method (2013)

The new welding method called as F-MAG, which has been developed based on CO2 gas-shielded arc welding method (MAG) increase deposition rate of weld metal. F-MAG welding method is combined with hot-wire, as having been used in TIG arc- and laser-welding methods. F-MAG is performed using hot-wire which is inserted into the rear part of weld pool made with leading electrode. Hot-wire melts by both electrical heating of itself and heat of weld pool.Multi-layered weld metals were prepared using F-MAG and MAG. Microstructures and mechanical properties of both as-weld and reheated zones in uppermost layer of the multi-layered weld metals formed with F-MAG and MAG were examined and the effects of hot-wire on microstructures and mechanical properties were analyzed.Both the as-weld and reheated zones of weld metal formed with F-MAG consisted of acicular ferrite (AF), equiaxed ferrite and so on. Both strength and elongation in as-weld and reheated zones formed with F-MAG were superior compared with those formed with MAG. It could be suggested that strength increased by refinement of AF due to increase in the concentration of alloying elements being contained in hot-wire. Larger elongation of weld metal in F-MAG compared with that in MAG could be analyzed in terms of the Aggregate of acicular ferrite Laths with nearly Parallel Slip systems between neighboring acicular ferrite laths (ALPS). The number of AFs contained in an ALPS formed with F-MAG is larger than that with MAG, in spite of the sizes of ALPSs formed with MAG and F-MAG being almost same. Deformation occurs over a lot of AFs in the case of finer AF formed with F-MAG through the rotation of tensile test piece during deformation, resulting in the larger elongation.
The Relationship between Emotional and Esteem Social Support Messages and Health (2017)

The purpose of this investigation is to determine the relative contribution of five types of social support to improved patient health. This analysis suggests that emotional and esteem social support messages are associated with improved patient health as measured by a decrease in average blood glucose levels among diabetic patients. In addition, when two system feature variables, two system use variables, two measures of learning, one measure of self-efficacy, and one measure of affect toward their HCP were added to the baseline model, a third significant factor emerged. Perceptions about learning about diabetes from reading the digital messages sent by their HCP also predicted improved patient health. Cognitive-Emotional Theory of Esteem Support Messages suggests a combination of esteem social support and emotional social support messages enhanced our ability to predict improved patient health by change in patient hemoglobin A1c (HbA1c) scores. While a nonrandomized prospective study, this investigation provides support for the notion that provider-patient interaction is related to improved patient health and that both emotional and esteem social support messages play a role in that process. Finally, the study suggests some types of social support are and other types are not associated with improved patient health; this is consistent with the optimal matching hypothesis.
Horizontal Slim-Hole Drilling With Coiled Tubing: An Operator's Experience (1992)

Summary What is believed to be the first horizontal well drilled with directionally controlled coiled tubing recently was completed in the Austin Chalk formation. An existing well was sidetracked out of 4 ½ -in. casing with a conventional whip stock. An average build rate of 15°/ 100 ft was achieved in the curve, and a 1,458-ft vertical section was drilled with 2-in. coiled tubing, downhole mud motors, wireline steering tools, a mechanical downhole orienting tool, and 3 7/8-in. bits. This paper discusses the orienting and directional tools and techniques developed during this operation. It also describes improvements made for the second well. Introduction The Austin Chalk formation within the Pearsall field in Texas consists of a Cretaceous limestone through which production occurs from natural fractures. Drilling through these fractures requires careful preparation because the rig may encounter prolific flow of oil or complete lost circulation. During the discovery of the Pearsall field, wells were drilled vertically to the Austin Chalk. Horizontal drilling currently is the preferred technique for development of the Austin Chalk. Through horizontal drilling, a single wellbore can intersect several fractures, potentially increasing initial flow and ultimate oil recovery. Fresh water usually is used as a drilling fluid because it will control formation pressures when circulation is lost. Surface pressure containment equipment allows the flow of well fluids and gases to the surface under controlled circumstances where they are processed during drilling. In the field, this technique is commonly called "flow drilling." This method minimizes loss of drilling fluid to the formation and increases rate of penetration (ROP). The severity of either lost circulation or prolific flow can pose operational and safety problems. Loss of circulation can prevent adequate removal of drill cuttings, increasing the potential for sticking the drillstring. In addition, the logistics for providing an ample water supply in this semiarid area are complex because the large volumes required to power the downhole mud motors are lost to the natural fractures. Prolific flow from the fractures necessitates the handling of large volumes of oil and gas at pressures that can approach the limits of the surface equipment. Safely tripping into or out of the hole with drillpipe requires killing the well, which sometimes calls for the use of expensive and environmentally undesirable heavy brines. Therefore, a method of tripping while under pressure without killing the well would greatly enhance flow drilling operations. This problem was addressed by replacing the conventional drillstring with coiled tubing.
Photometric registration by adaptive high dynamic range image generation for augmented reality (2008)

This paper describes photometric registration for augmented reality (AR) using a high-dynamic-range (HDR) image. In photorealistic AR, estimating the lighting environment of virtual objects is difficult because of low dynamic range cameras. In order to overcome this problem, we propose a method that estimates the lighting environment from an HDR image and renders virtual objects using an HDR environment map. Virtual objects are overlaid in real-time by adjusting the dynamic range of the rendered image with tone mapping according to the exposure time of the camera. The HDR image is generated from multiple images captured with various exposure times. We have found through experimentation that the updating rate is improved by effectively limiting the dynamic range, depending on the exposure time. We have verified the effect of limiting the dynamic range on the reality of virtual objects.
Design of a stable human acid‐β‐glucosidase: towards improved Gaucher disease therapy and mutation classification (2023)

Acid-β-glucosidase (GCase, EC3.2.1.45), the lysosomal enzyme which hydrolyzes the simple glycosphingolipid, glucosylceramide (GlcCer), is encoded by the GBA1 gene. Biallelic mutations in GBA1 cause the human inherited metabolic disorder, Gaucher disease (GD), in which GlcCer accumulates, while heterozygous GBA1 mutations are the highest genetic risk factor for Parkinson's disease (PD). Recombinant GCase (e.g., Cerezyme<sup>®</sup> ) is produced for use in enzyme replacement therapy for GD and is largely successful in relieving disease symptoms, except for the neurological symptoms observed in a subset of patients. As a first step toward developing an alternative to the recombinant human enzymes used to treat GD, we applied the PROSS stability-design algorithm to generate GCase variants with enhanced stability. One of the designs, containing 55 mutations compared to wild-type human GCase, exhibits improved secretion and thermal stability. Furthermore, the design has higher enzymatic activity than the clinically used human enzyme when incorporated into an AAV vector, resulting in a larger decrease in the accumulation of lipid substrates in cultured cells. Based on stability-design calculations, we also developed a machine learning-based approach to distinguish benign from deleterious (i.e., disease-causing) GBA1 mutations. This approach gave remarkably accurate predictions of the enzymatic activity of single-nucleotide polymorphisms in the GBA1 gene that are not currently associated with GD or PD. This latter approach could be applied to other diseases to determine risk factors in patients carrying rare mutations.