gebhart/patrepeval huggingface dataset:
<title>Data-dependent optimizations for permutation volume rendering</title> (1998)

We have developed a highly efficient, high fidelity approach for parallel volume rendering that is called permutation warping. Permutation warping may use any one pass filter kernel, an example of which is trilinear reconstruction, an advantage over the shear warp approach. This work discusses experiments in improving permutation warping using data dependent optimizations to make it more competitive in speed with the shear warp algorithm. We use a linear octree on each processor for collapsing homogeneous regions and eliminating empty space. Static load balancing is also used to redistribute nodes from a processor's octree to achieve higher efficiencies. In studies on a 16384 processor MasPar MP-2, we have measured improvements of 3 to 5 times over our previous results. Run times are 73 milliseconds, 29 Mvoxels/second, or 14 frames/second for 128<SUP>3</SUP> volumes, the fastest MasPar volume rendering numbers in the literature. Run times are 427 milliseconds, 39 Mvoxels/second, or 2 frames/second for 256<SUP>3</SUP> volumes. The performance numbers show that coherency adaptations are effective for permutation warping. Because permutation warping has good scalability characteristics, it proves to be a superior approach for massively parallel computers when image fidelity is a required feature. We have provided further evidence for the utility of permutation warping as a scalable, high fidelity, and high performance approach to parallel volume visualization.
ChemInform Abstract: Studies on the Synthesis of the Indole Alkaloids Pauciflorine A and B. (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.
Isomer‐Tailored Carbon Molecular Sieve Membranes with High Gas Separation Performance (2020)

Abstract Partial substitution of the asymmetric 3,3′,4,4′‐biphenyl dianhydride monomer (aBPDA) into the backbone of a 6FDA‐BPDA‐DAM (6FDA=4,4′‐hexafluoroisopropylidene, DAM=diaminomesitylene) diphthalic anhydride‐based copolyimide based on symmetrical BPDA (sBPDA) was used to study membrane structure‐processing‐property relationships for gas separation. Properties of the polymer membrane as well as derived carbon molecular sieves (CMS) membranes were compared with copolyimides without the asymmetric monomer structure. CMS membranes derived from the copolyimides are very attractive for CO 2 /CH 4 separation. aBPDA provides the copolyimide with additional packing‐inhibited structures compared with the symmetric ones and yields a corresponding CMS membrane with very high CO 2 permeability and good CO 2 /CH 4 selectivity. This work, therefore, outlines a new strategy for tuning CMS membrane structure to meet separation performance needs.
Diversity-Multiplexing Trade-Off In Ad-Hoc Networks (2007)

In this paper, the diversity-multiplexing trade-off is derived for a one-dimensional equally-spaced Rayleigh fading ad-hoc network. It is assumed that the interference from each link to the other links in the network declines exponentially with the distance, such that the attenuation between two neighbor links is rho <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">alpha0</sup> . For any given multiplexing gain r, the maximum diversity gain is achieved by utilizing a general time-sharing scheme. We obtain an explicit formula for the maximum diversity gain, and show that depending on the value of r and alpha <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> , there is an optimum time-sharing factor which yields the maximum diversity gain.
Effect of diethyl ether on phosphatidylcholine biosynthesis in hamster organs (1988)

The effect of diethyl ether anesthesia on phosphatidylcholine biosynthesis in hamster organs was investigated. Ether administration did not affect the incorporation of radioactive choline into phosphatidylcholine in the liver, heart, lung, brain and spleen. A significant (29%) decrease in the labeling of phosphatidylcholine was detected in the kidney of ether-treated hamsters. Reduction in phosphatidylcholine labeling was not due to a diminished radioactive choline uptake but a decrease in the conversion of phosphocholine to CDP-choline. The accumulation of labeled phosphocholine was caused by the translocation of CTP:phosphocholine cytidylyltransferase from microsomal (more-active) form to cytosolic (less-active) form. Ether administration appears to modulate the cytidylyltransferase in hamster kidney differently than that in other hamster organs.
[Calcium antagonists: current and future applications based on new evidence. Calcium channel blockers and autonomic nervous system]. (2010)

Calcium channel blockers are widely used for the treatment of hypertension. Although they are effective for their strong vasodilator action, there are concerns regarding related baroreflex-mediated activation of sympathetic nervous system. However, long-acting calcium channel blockers, such as amlodipine, are now known safe for the treatment of hypertension. Furthermore, the new type of calcium channel blockers, such as cilnidipine with N-type calcium channel blocking action, or azelnidipine that has sympatho-inhibitory action with anti-oxidant effect, provide a new insight for the future use of calcium channel blockers.
Molecular and genetic regulation of pig pancreatic islet cell development (2020)

Reliance on rodents for understanding pancreatic genetics, development and islet function could limit progress in developing interventions for human diseases such as diabetes mellitus. Similarities of pancreas morphology and function suggest that porcine and human pancreas developmental biology may have useful homologies. However, little is known about pig pancreas development. To fill this knowledge gap, we investigated fetal and neonatal pig pancreas at multiple, crucial developmental stages using modern experimental approaches. Purification of islet β-, α- and δ-cells followed by transcriptome analysis (RNA-seq) and immunohistology identified cell- and stage-specific regulation, and revealed that pig and human islet cells share characteristic features that are not observed in mice. Morphometric analysis also revealed endocrine cell allocation and architectural similarities between pig and human islets. Our analysis unveiled scores of signaling pathways linked to native islet β-cell functional maturation, including evidence of fetal α-cell GLP-1 production and signaling to β-cells. Thus, the findings and resources detailed here show how pig pancreatic islet studies complement other systems for understanding the developmental programs that generate functional islet cells, and that are relevant to human pancreatic diseases.
Visible Light‐Induced Water Oxidation on Mesoscopic α‐Fe2O3 Films Made by Ultrasonic Spray Pyrolysis. (2005)

Abstract For Abstract see ChemInform Abstract in Full Text.
Direct Interference with Rhamnogalacturonan I Biosynthesis in Golgi Vesicles (2002)

Pectin is a class of complex cell wall polysaccharides with multiple roles during cell development. Assigning specific functions to particular polysaccharides is in its infancy, in part, because of the limited number of mutants and transformants available with modified pectic polymers in their walls. Pectins are also important polymers with diverse applications in the food and pharmaceutical industries, which would benefit from technology for producing pectins with specific functional properties. In this report, we describe the generation of potato (Solanum tuberosum L. cv Posmo) tuber transformants producing pectic rhamnogalacturonan I (RGI) with a low level of arabinosylation. This was achieved by the expression of a Golgi membrane-anchored endo-alpha-1,5-arabinanase. Sugar composition analysis of RGI isolated from transformed and wild-type tubers showed that the arabinose content was decreased by approximately 70% in transformed cell walls compared with wild type. The modification of the RGI was confirmed by immunolabeling with an antibody recognizing alpha-1,5-arabinan. This is the first time, to our knowledge, that the biosynthesis of a plant cell wall polysaccharide has been manipulated through the action of a glycosyl hydrolase targeted to the Golgi compartment.
Modifying the Spectral Weights of Vibronic Transitions via Strong Coupling to Surface Plasmons (2019)

Strong light–matter coupling results in the formation of hybrid half-light half-matter excitations with modified energy levels. The strong coupling of excitons with photons in organic molecular systems has received much attention recently owing to the potential for engineering their photophysical properties and even the prospects for controlling chemical reactions. One means to affect chemical reactions is to control the molecular excited states within their vibronic manifolds. Here we demonstrate the modification of the spectral weight of the vibronic transitions and excimer emission in an archetype organic molecule, diindenoperylene (DIP), by strong coupling to surface-plasmon polaritons. The vertically aligned DIP molecule is grown on an ultrasmooth film of Ag with a 3 nm thick alumina spacer. Through angle-resolved reflectivity measurements we demonstrate the strong coupling between the surface-plasmon mode of the Ag and the vibronic transitions in DIP. Temperature-dependent photoluminescence measurements show the shift in the spectral weight of the emission peaks when the molecules are in the strong coupling regime—changes that are attributed to the polaritonic control of the oscillator strengths of emissive states owing to modification in the Franck–Condon factor and efficient energy transfer to lower-lying excimer states. This work demonstrates the potential to modify the material properties through a strong light–matter interaction.
Weak localization corrections to spin and particle transport in semiconductor quantum wells. Effects of the spin orbit interaction (1996)

We studied weak localization corrections to spin and particle transport parameters of III-V semiconductor quantum wells. The intrinsic spin splitting of electron energies in the conduction band was taken into account. At the region of times larger than the D'yakonov-Perel' spin relaxation time we found drastically different localization behaviours of the spin and particle diffusion coefficients. We also have shown that the weak localization corrections are strongly dependent on the crystal orientation of material within the quantum well. In particular, no antilocalization behaviour was found for the particle diffusion in case of [011] orientation in contrast to [111] and [001] oriented quantum wells. Possible experimental detection is suggested.
Monte Carlo simulation of phase equilibria for the two-dimensional Lennard-Jones fluid in the Gibbs ensemble (1990)

The coexistence curve of the two-dimensional Lennard-Jones fluid has been obtained by Monte Carlo simulation in the Gibbs ensemble. The calculated vapor–liquid equilibria show that the apparent critical exponent βe has a value near that of an infinitely large system, rather than the classical value, even though the correlation length is constrained by the box size. These results are similar to those for the three-dimensional case.
A Semiconductor Area Based Assessment of AC Motor Drive Converter Topologies (2009)

In order to find the optimal converter topology for a given AC motor drive, as defined by its mission profile, suitable assessment criteria have to be applied. A new semiconductor chip area based approach is proposed to compare and assess different motor drive converter topologies. It determines the total semiconductor chip area based on the drive's operating point and the optimal partitioning of the transistor and diode chip areas. This approach not only provides a distinct figure-of-merit for comparison but also enables the semiconductor costs of different converter topologies to be determined. The chip area based comparison has been successfully used to assess three 3-phase AC-DC-AC converter topologies for a 15 kW (20 HP) motor drive. It is shown that the voltage DC-link back-to-back converter based drive provides the best overall performance in terms of chip area, cost, efficiency, and available nominal torque.
Differential display by PCR: novel findings and applications (1995)

Journal Article Differential display by PCR: novel findings and applications Get access M. Jorge Guimarães, M. Jorge Guimarães * DNAX Reseach Institute of Molecular and Cellular Biology901 California Avenue, Palo Alto, CA 94304, USA * To whom correspondence should be addressed Search for other works by this author on: Oxford Academic PubMed Google Scholar Frank Lee, Frank Lee DNAX Reseach Institute of Molecular and Cellular Biology901 California Avenue, Palo Alto, CA 94304, USA + resent address: Millenium Pharmaceuticals, 640 Memorial Drive, Cambridge, MA 02139, USA Search for other works by this author on: Oxford Academic PubMed Google Scholar Albert Zlotnik, Albert Zlotnik DNAX Reseach Institute of Molecular and Cellular Biology901 California Avenue, Palo Alto, CA 94304, USA Search for other works by this author on: Oxford Academic PubMed Google Scholar Terrill McClanahan Terrill McClanahan DNAX Reseach Institute of Molecular and Cellular Biology901 California Avenue, Palo Alto, CA 94304, USA Search for other works by this author on: Oxford Academic PubMed Google Scholar Nucleic Acids Research, Volume 23, Issue 10, 25 May 1995, Pages 1832–1833, https://doi.org/10.1093/nar/23.10.1832 Published: 25 May 1995 Article history Received: 27 February 1995 Accepted: 30 March 1995 Published: 25 May 1995
Morphometric Reconstruction of Coronary Vasculature Incorporating Uniformity of Flow Dispersion (2018)

Experimental limitations in measurements of coronary flow in the beating heart have led to the development of <i>in silico</i> models of reconstructed coronary trees. Previous coronary reconstructions relied primarily on anatomical data, including statistical morphometry (e.g., diameters, length, connectivity, longitudinal position). Such reconstructions are non-unique, however, often leading to unrealistic predicted flow features. Thus, it is necessary to impose physiological flow constraints to ensure realistic tree reconstruction. Since a vessel flow depends on its diameter to fourth power, diameters are the logical candidates to guide vascular reconstructions to achieve realistic flows. Here, a diameter assignment method was developed where each vessel diameter was determined depending on its downstream tree size, aimed to reduce flow dispersion to within measured range. Since the coronary micro-vessels are responsible for a major portion of the flow resistance, the auto regulated coronary flow was analyzed in a morphometry-based reconstructed 400 vessel arterial microvascular sub-tree spanning vessel orders 1-6. Diameters in this subtree were re-assigned based on the flow criteria. The results revealed that diameter re-assignment, while adhering to measured morphometry, significantly reduced the flow dispersion to realistic levels while adhering to measured morphometry. The resulting network flow has longitudinal pressure distribution, flow fractal nature, and near-neighboring flow autocorrelation, which agree with measured coronary flow characteristics. Collectively, these results suggest that a realistic coronary tree reconstruction should impose not only morphometric data but also flow considerations. The work is of broad significance in providing a novel computational framework in the field of coronary microcirculation. It is essential for the study of coronary circulation by model simulation, based on a realistic network structure.
Substructure and properties of sodium beta alumina solid electrolytes. Interim report, June 1, 1974--May 31, 1975 (1975)

The relation of the properties of sodium beta alumina to its microstructure and impurity content was investigated. The electrolyte was prepared from both laboratory and commercial powders; a method that significantly improves the sinterability of commercial sodium ..beta.. alumina powders was developed. The ac conductivity, effects of calcium on the ionic conductivity, apparent activation energies as a function of temperature, grain boundary activation energies, and microstructure of ..beta.. alumina were studied. It was found that Ca is a particularly deleterious impurity. The activation energy for inter- and transgranular ionic conduction was temperature independent. Some complex crystallographic faults were found that may be partially responsible for some frequency dependence of the complex impedance of the solid electrolyte. 17 figs., 1 table. (RWR)
List of legend for supplementary files from <sup>18</sup>F-FAZA PET Imaging Response Tracks the Reoxygenation of Tumors in Mice upon Treatment with the Mitochondrial Complex I Inhibitor BAY 87-2243 (2023)

&lt;p&gt;List of legend for supplementary files. Description list for supplementary files&lt;/p&gt;
The efficacy of a test and ESS program (2002)

Abstract Statistical results of all the 1621 failure analyses, which cover a four‐year effort, are presented. The failure analyses were part of an elaborate test and ESS process of a high‐reliability system. Of the failure analyses, 97.5% identified the root cause. The classification of the failures by 11 root cause classes, including the test and ESS process itself is provided. The distribution of failure root causes detected during the various phases of the process is shown. Each test phase was analyzed according to the share of failures found and the fraction of failures that occurred during that phase. Applying a linear formula that summarizes the relative efficacy of each test phase compares the performances of the various phases. The term efficacy is used to describe the ability of a test phase to reveal failures without generating new problems. Copyright © 2002 John Wiley &amp; Sons, Ltd.
Institutional environment and organisational responses in changing decentralised governance systems in India (2021)

The postmodern trends of development theories embrace decentralisation as manifested through organisations like Panchayats and different cooperatives. Relatively little emphasis is given to explore and design an effective institutional environment for the implementation of development schemes through these organisations. Consequently, these organisations experience incompatibilities, overlaps, corruption and result in poor functioning in terms of institutional effectiveness and performance. Based on thorough multisited ethnographic studies in Panchayats, and farming sectors, I map development and organisational theories with policy implementations to unravel three major dimensions of institutional environment and organisational functioning. These are: (a) in what ways theories and practices disjoint in the context of decentralised governance in the two sectors, (b) how incompatibilities occur and local politics seep through the incompatibilities to encourage skewed distribution of resources and services and (c) in what ways such disjunctions and political seepage make decentralised institutions prone to corrupt practices and ineffectiveness. I argue that the institutional environment influences the cultural-cognitive dimensions of the public organisations through a variety of stakeholders and without looking at the institutional effectiveness, development initiatives are bound to remain ineffective.
Confinement of dimeric sulfuric acid in a self-assembled molecular capsule: [(H2SO4)2⊂(calix[5]arenesulfonic acid)2] (1999)

Self-assembled molecular capsules are formed on crystallisation of calix[5]arenesulfonic acid resulting from treating calix[5]arene with sulfuric acid; the calix[5]arenesulfonic acid molecules dimerise via hydrogen bonding through the sulfonic acid groups, shrouding two hydrogen-bonded sulfuric acid molecules as the supermolecule [(H2SO4)2}⊂{(calix[5]arenesulfonic acid)2].
Mistuning Evaluation Comparison Via As-Manufactured Models, Traveling Wave Excitation, and Compressor Rigs (2018)

As-manufactured rotors behave quite differently than nominal as-designed rotors due to small geometric and material property deviations in the rotor, referred to as mistuning. The mistuning of a 20 bladed, integrally bladed rotor (IBR) will be evaluated via analytical methods, benchtop testing, and using a rotating compressor research facility. Analytical methods consist of the development of an as-manufactured model based on geometry measurements from a high fidelity optical scanning system. Benchtop testing of the IBR is done using a traveling wave excitation (TWE) system that simulates engine order excitation in stationary bladed disks for the purpose of determining potentially high responding blades due to mistuning. The compressor research facility utilizes blade tip timing to measure the blade vibration of the IBR. The resonant response of the IBR at various modes and harmonic excitations is investigated. A comprehensive mistuning and force amplification comparison between the as-manufactured model, TWE, and the compressor rig is performed. Mistuning of each method is evaluated using three different methods. First, the tuned absorber factor (TAF), which is a metric to determine potential high responding blades, is determined for each system. Next, mistuning is analyzed by isolating individual blades both experimentally on the bench and analytically to determine the mistuning patterns. Lastly, the mistuning determined by each system will be evaluated using a reduced-order model, namely the fundamental mistuning model identification (FMM ID). It will be shown that TAF shows variability between each method providing indications TAF may not be the best approach of force amplification predictions. Basic mistuning agreements exist when isolating blades both experimentally and analytically exhibiting as-manufactured models are capable of representing full experiments. System ID methods provide a basic agreement between both the mistuning pattern and the mistuning amplification for all three methods analyzed. This ultimately shows the importance and the ability to use as-manufactured models to help increase detailed understanding of IBR's.
PMU-Based Estimation of Inertia Variation: Proposed Metric and Feasibility Analysis (2023)

Due to the ever-increasing penetration of renewable energy sources, the estimation of network inertia is becoming a critical task for system operators. This operation is typically carried out by aggregating synchronized measurements acquired at different nodes. In this paper, instead, we investigate the feasibility of a local approach for inertia estimation. In this sense, PMU-based measurements of ROCOF and phasors are exploited to define a new indicator of inertia variations. A preliminary validation in realistic simulated scenarios confirms the proposed approach's potential.