gebhart/patrepeval huggingface dataset:
A Constitutive Equation for Ottawa Sand (1986)

A five‐parameter constitutive equation for Ottawa sand at one void ratio is proposed. After an expression for the strain energy function in terms of the stretch ratios is obtained, the various constants in the constitutive relations are determined using experimental test data. The predictive capability of this constitutive model, which is obtained by using the theory of finite deformations, is demonstrated through application to different deformation fields.
Correlation of <i>J</i>C13–H with τ and the Significance of this Relationship (1963)

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 N. A. Matwiyoff, Russell S. Drago; Correlation of JC13–H with τ and the Significance of this Relationship. J. Chem. Phys. 15 May 1963; 38 (10): 2583–2584. https://doi.org/10.1063/1.1733549 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 PortfolioThe Journal of Chemical Physics Search Advanced Search |Citation Search
Leaching Kinetics of Praseodymium in Sulfuric Acid of Rare Earth Elements (REE) Slag Concentrated by Pyrometallurgy from Magnetite Ore (2015)

A leaching kinetics was conducted for the purpose of recovery of praseodymium in sulfuric acid (<TEX>$H_2SO_4$</TEX>) from REE slag concentrated by the smelting reduction process in an arc furnace as a reactant. The concentration of <TEX>$H_2SO_4$</TEX> was fixed at an excess ratio under the condition of slurry density of 1.500 g slag/L, 0.3 mol <TEX>$H_2SO_4$</TEX>, and the effect of temperatures was investigated under the condition of 30 to <TEX>$80^{\circ}C$</TEX>. As a result, praseodymium oxide (<TEX>$Pr_6O_{11}$</TEX>) existing in the slag was completely converted into praseodymium sulfate (<TEX>$Pr_2(SO_4)_3{\cdot}8H_2O$</TEX>) after the leaching of 5 h. On the basis of the shrinking core model with a shape of sphere, the first leaching reaction was determined by chemical reaction mechanism. Generally, the solubility of pure REEs decreases with the increase of leaching temperatures in sulfuric acid, but REE slag was oppositely increased with increasing temperatures. It occurs because the ash layer included in the slag is affected as a resistance against the leaching. By using the Arrhenius expression, the apparent activation energy of the first chemical reaction was determined to be <TEX>$9.195kJmol^{-1}$</TEX>. In the second stage, the leaching rate is determined by the ash layer diffusion mechanism. The apparent activation energy of the second ash layer diffusion was determined to be <TEX>$19.106kJmol^{-1}$</TEX>. These relative low activation energy values were obtained by the existence of unreacted ash layer in the REE slag.
Domino Reactions of 4‐Ene‐1,2,3‐triol Derivatives (1993)

Proceeding through at least eight individual steps and ending with a dimerization, the domino cationic transformation of 1 leading to 2 provides a new synthetic approach to bis(furanosides). Domino processes are of current interest in organic synthesis, especially when the reaction requires many single steps and furnishes interesting products with high regio- and stereocontrol. a, R1 = H, R2= Me; b = R1 = R2 = H; c, R1 = Et, R2 = H.
ZnS-nanocrystals/polypyrrole nanocomposite film based immunosensor (2012)

We report an electrochemically synthesized ZnS nanocrystals modified polypyrrole (PPy) nanocomposite film based immunosensor for the detection of C-reactive protein (αCRP). The ZnS-PPy composite film was characterized by transmission electron microscopy (TEM), atomic force microscopy (AFM) and electrochemical techniques. The modified film showed good biocompatibility with efficient binding to protein antibody (αCRP-Ab) molecules through ZnS nanocrystals, exhibited an attractive platform for immunosensor fabrication. The electrical and sensing properties of the polymer composite film of different thickness towards protein antigen (αCRP-Ag) were delineated. The immunosensor exhibited an impedance response to αCRP-Ag concentration in a linear range from 10 ng to 10 μg mL−1.
Protective Coating For Laser Drilling Of Silicon (1988)

Sodium silicate prevents spattered silicon from fusing with surrounding material. Sodium silicate solution applied to wafer by dipping and draining or by spinning; application by spraying also works. When dried in oven, solution leaves thin coating of sodium silicate glass.
Susceptibility of Eight U.S. Wheat Cultivars to Infestation by<i>Rhyzopertha dominica</i>(Coleoptera: Bostrichidae) (2000)

Cultivars of wheat, Triticum aestivum L., were assessed to determine their respective level of resistance to lesser grain borers, Rhyzopertha dominica (F.), in postharvest storage. Cultivars were representative of hard red winter, soft red winter, white spring, and durum wheat classes currently grown in the United States. Samples of each cultivar were maintained at 30.0°C and 70% RH and infested with 2- to 3-wk-old adult beetles for 1 wk. Adult progeny were counted at the end of one life cycle. Two temperatures, 27.0 and 34.0°C, were studied to examine the role of temperature (calculated in degree-days) in development. This experiment was conducted three times under similar conditions. Cultivars harboring a large quantity of progeny were considered more susceptible than those cultivars in which fewer progeny completed their life cycle. Each cultivar was analyzed for single kernel properties such as hardness, protein, and diameter. Wheat cultivar had a significant influence on quantity of progeny in all experiments. There were no significant effects on survivorship of progeny as a result of temperature when calculated in degree-days. Cultivars with smaller kernels were more susceptible to development of larger generation sizes in experiment 1 but not in the other two experiments. A kernel size experiment using large and small kernels from the same cultivar suggested that larger quantities of progeny are produced on small kernels compared with large kernels. Individual beetle weights were not influenced by temperature or cultivar. These results imply that stored grain managers should be aware of potential differences in susceptibility, attributable to wheat cultivar, to lesser grain borer infestations.
ChemInform Abstract: C‐SILYLIERUNG VON METHYLBUTENON, CARVON UND ALPHA‐JONON DURCH DAS SYSTEM ME3SICL/LI/THF (1974)

Abstract Die direkte C‐Silylierung des Butenons (II) ergibt (I) und (III), aus denen beider sauren Hydrolyse (IV) bzw. (V) entstehen.
Kathodische bescherming van wapening in beton: Ook voor betonnen kunstwerken een oplossing? (1998)

Kathodische bescherming (afgekort KB) is een moderne techniek om corrosie van wapening in betonconstructies te bestrijden. KB is al op ongeveer 20 gebouwen in Nederland met succes toegepast; het eerste projekt op een brug van Rijkswaterstaat is in 1996 uitgevoerd en een tweede in 1997. In september 1996 is CUR-Aanbeveling 45 "Kathodische bescherming van beton" gepubliceerd, die is opgesteld op grond van ervaringen van betrokken bedrijven en adviseurs
Dustbuster: a compact impact-ionization time-of-flight mass spectrometer for <i>in situ</i> analysis of cosmic dust (2002)

We report on the design and testing of a compact impact-ionization time-of-flight mass spectrometer for analysis of cosmic dust, suitable for use on deep space missions. The instrument, Dustbuster, incorporates a large target area with a reflectron, simultaneously optimizing mass resolution, particle detection, and ion collection. Dust particles hit the 65-cm2 target plate and are partially ionized by the impact. The resulting ions, with broad energy and angular distributions, are accelerated through a modified reflectron, focusing ions of specific m/z in space and time to produce high-resolution mass spectra. The cylindrically symmetric instrument is 10 cm in diameter and 20 cm in length, considerably smaller than previous in situ dust analyzers, and can be easily scaled as needed for specific mission requirements. Laser desorption ionization of metal and mineral samples embedded in the impact plate simulated particle impacts for evaluations of instrument performance. Mass resolution in these experiments ranged from 60–180, permitting resolution of isotopes. The mass spectrometer can be combined with other instrument components to determine dust particle trajectories and sizes.
Simulation of katabatic flow and mountain waves (1995)

It is well-known that both mountain waves and katabatic flows frequently form in the severe relief of the Front Range of the Rocky Mountains. Occasionally these phenomena have been found to occur simultaneously. Generally, however, the large body of literature regarding them has treated each individually, seldom venturing into the regime of their potential interaction. The exceptions to this rule are Arritt and Pielke (1986), Barr and Orgill (1989). Gudiksen et al. (1992), Moriarty (1984), Orgill et al. (1992), Orgill and Schreck (1985). Neff and King (1988), Stone and Hoard (1989), Whiteman and Doran (1993) and Ying and Baopu (1993). The simulations overviewed here attempt to reproduce both atmospheric features simultaneously for two case days during the 1993 ASCOT observational program near Rocky Flats, Colorado.
ChemInform Abstract: High‐Pressure Polymorph of Phosphorus Nitride Imide HP<sub>4</sub>N<sub>7</sub> Representing a New Framework Topology. (2014)

Abstract A new polymorph of HP 4 N 7 is synthesized from a mixture of P 3 N 5 and NH 4 Cl in a modified Walker‐type multianvil assembly (BN crucible, 6 GPa, 800 °C, 240 min).
Etching of Ga-based III - V semiconductors in inductively coupled Ar and -based plasma chemistries (1997)

We report results of a study on the inductively coupled plasma (ICP) etching of GaAs, AlGaAs, GaSb, and GaP in pure Ar, and plasma chemistries. Etch rates of the semiconductors initially increase with ICP source power, reaching maxima around 1500 - with - 700 W ICP power, and then decrease with further increase of ICP power because of the decrease in cathode dc self-bias. Etch rates increase at fixed ICP power with rf chuck power in the range of 100 W to 450 W, while they showed little dependence on the chamber pressure (2 mTorr - 20 mTorr) in discharges. We found that the dc self-bias on the rf chuck decreased exponentially as ICP power increased, while it increased with rf chuck power and pressure in these plasma chemistries. A simple calculation of ion flux and etch yield based on dc self-bias of the plasmas on the sample chuck was used to measure typical values of etch yield. In both ICP and discharges these were close to the pure Ar sputter yield.
Comparison of Various Assay Systems for Prostate-specific Antigen Standardization (1992)

To avoid confusion between serum prostate-specific antigen (PSA) values among various assay systems, clinical studies on the possibility of conversion among detection values were performed. The assay kits used for the PSA comparisons were MARKIT-F PA, MARKIT-M PA, EIKEN PA, PA test WAKO, Ball ELSA PSA, E-Test Tosoh II PA, PROS-CHECK PSA, DELFIA PSA and TANDEM-R PSA. Using each kit, the standards attached to each assay system were detected, and 142 sera samples from benign hypertrophies or prostate cancers were assayed for serum PSA values. By detecting the standards for each kit, slopes were obtained which were almost identical to those obtained from original assay system. The coefficients of correlation among the PSA detection systems, using patients' sera, were very high, and linear regression lines were also obtained. The results suggest that almost identical serum PSA values may be detected either by multiplying by a coefficient to bring it to the standard or using the conversion formula.
Robust Video Fingerprinting Based on Symmetric Pairwise Boosting (2009)

This paper proposes a video fingerprinting method based on a novel binary fingerprint obtained using a feature selection algorithm called the symmetric pairwise boosting (SPB). The binary fingerprints are obtained by filtering and quantizing perceptually significant features extracted from an input video clip. The SPB algorithm, which is a generalization of the conventional asymmetric pairwise boosting (APB), selects appropriate filters and quantizers from a class of candidate filters and quantizers in such a way that perceptually similar and dissimilar pairs of video clips are correctly classified as matching and non-matching pairs, respectively. The binary form of the novel fingerprint makes it conducive to an efficient database search, and the experimental results show that the proposed method outperforms the APB-based video fingerprinting methods in terms of both robustness and discriminability.
The Loss of Myocardial Benefit following Ischemic Preconditioning Is Associated with Dysregulation of Iron Homeostasis in Diet-Induced Diabetes (2016)

Whether the diabetic heart benefits from ischemic preconditioning (IPC), similar to the non-diabetic heart, is a subject of controversy. We recently proposed new roles for iron and ferritin in IPC-protection in Type 1-like streptozotocin-induced diabetic rat heart. Here, we investigated iron homeostasis in Cohen diabetic sensitive rat (CDs) that develop hyperglycemia when fed on a high-sucrose/low-copper diet (HSD), but maintain normoglycemia on regular-diet (RD). Control Cohen-resistant rats (CDr) maintain normoglycemia on either diet. The IPC procedure improved the post-ischemic recovery of normoglycemic hearts (CDr-RD, CDr-HSD and CDs-RD). CDs-HSD hearts failed to show IPC-associated protection. The recovery of these CDs-HSD hearts following I/R (without prior IPC) was better than their RD controls. During IPC ferritin levels increased in normoglycemic hearts, and its level was maintained nearly constant during the subsequent prolonged ischemia, but decayed to its baseline level during the reperfusion phase. In CDs-HSD hearts the baseline levels of ferritin and ferritin-saturation with iron were notably higher than in the controls, and remained unchanged during the entire experiment. This unique and abnormal pattern of post-ischemic recovery of CDs-HSD hearts is associated with marked changes in myocardial iron homeostasis, and suggests that iron and iron-proteins play a causative role/s in the etiology of diabetes-associated cardiovascular disorders.
The Synthesis and Mesomorphism of Mesogenic Imines with Fluorocarbon Chains and their Complexes with Rhenium(I): New Materials with Cubic Phases (2001)

Abstract In this paper, we describe the synthesis of some imine ligands bearing fluorinated chains and their metal complexes with Re(I). Whereas related ligands with hydrocarbon chains show nematic and SC phases, the new ligands show SA and SC phases. However, when both terminal chains are fully fluorinated, then the ligand additionally show a cubic phase. Metal complexes of the fluorinated ligands show a SA phase before decomposing. The mesomorphism of both the complexes and the ligands is discussed and the formation of cubic phases in these imines is explored in relation to other materials showing a cubic phase.
Metabolic alpha-hydroxylation of N-nitrosomorpholine and 3,3,5,5-tetradeutero-N-nitrosomorpholine in the F344 rat. (1981)

We studied the metabolism in the male F344 rats of N-nitrosomorpholine and of 3,3,5,5-tetradeutero-N-nitrosomorpholine ; the latter is less carcinogenic and less mutagenic than is N-nitrosomorpholine. alpha-Hydroxylation (3- or 5-hydroxylation) of N-nitrosomorpholine by liver microsomes and a reduced nicotinamide adenine dinucleotide phosphate-generating system produced (2-hydroxyethoxy)acetaldehyde, which was identified as its 2,4-dinitrophenylhydrazone derivative. When we administered N-nitrosomorpholine to rats i.p., we did not detect (2-hydroxyethoxy)acetaldehyde in the urine, but we did identify (2-hydroxyethoxy)acetic acid (16% of the dose). We also identified N-nitroso(2-hydroxyethyl)glycine (33% of the dose) from beta-hydroxylation (2- or 6-hydroxylation), N-nitrosodiethanolamine (12%), and unchanged N-nitrosomorpholine (1.5%) in the urine. The deuterated analogs of the above metabolites were isolated from the urine of rats treated with 3,3,5,5-tetradeutero-N-nitrosomorpholine in yields as follows: (2-hydroxyethoxy)acetic acid (3.4%); N-nitroso(2-hydroxyethyl)glycine (37%); N-nitrosodiethanolamine (12%); N-nitrosomorpholine (0.4%). These data demonstrates that deuterium substitution in the alpha-positions of N-nitrosomorpholine caused a decrease in the extent of alpha-hydroxylation and indicate that alpha-hydroxylation is the mechanism of activation of N-nitrosomorpholine.
Effect of Polyion Charge Density on the Morphology of Nanostructures in Polyelectrolyte−Surfactant Complexes (2002)

The poly(acrylate) (PA)/surfactant and poly(methacrylic acid) (PMA)/surfactant complexes were investigated by synchrotron X-ray scattering at various degrees of neutralization, α, of the polyion and at a fixed surfactant to polyion charge ratio. At low α-values, the surfactant organizes into polymer-induced micelles that are attracted by the polymer through hydrophobic interactions. This is followed by a formation of a Pm3n cubic structure at higher α-values as a consequence of very strong electrostatic attractions between the polyion and charged surfactant aggregates. From the position of the maxima in the scattering curves, the characteristic distance d was obtained. In PA/surfactant complexes, d varies linearly with α. This is an indication of a smooth expansion of the PA chain upon neutralization. In PA/dodecylpyridinium chloride (DPC) solutions, d increases from 30.2 Å at α = 0 to 36.6 Å at α = 1, and correspondingly d increases from 44.1 to 51 Å in the PA/CPC case. The d-value at α = 0 almost matches one micellar diameter, whereas the one at α = 1 exceeds this value by 6.4−7 Å. This indicates that micelles induced by the polyion at α = 1 are separated by a layer of the charged polymer chain, whereas the polymer coil at α = 0 does not contribute significantly to the intermicellar distance. The distance d in PMA/surfactant solutions is not a linear function of α. A major increase in d is found in the range of α between 0.2 and 0.5. This agrees with the α-range in which the conformational transition of the PMA chain takes place.
Syncoilin, a Novel Member of the Intermediate Filament Superfamily That Interacts with α-Dystrobrevin in Skeletal Muscle (2001)

Dystrophin coordinates the assembly of a complex of structural and signaling proteins that are required for normal muscle function. A key component of the dystrophin protein complex is alpha-dystrobrevin, a dystrophin-associated protein whose absence results in neuromuscular junction defects and muscular dystrophy. To gain further insights into the role of alpha-dystrobrevin in skeletal muscle, we used the yeast two-hybrid system to identify a novel alpha-dystrobrevin-binding partner called syncoilin. Syncoilin is a new member of the intermediate filament superfamily and is highly expressed in skeletal and cardiac muscle. In normal skeletal muscle, syncoilin is concentrated at the neuromuscular junction, where it colocalizes and coimmunoprecipitates with alpha-dystrobrevin-1. Expression studies in mammalian cells demonstrate that, while alpha-dystrobrevin and syncoilin associate directly, overexpression of syncoilin does not result in the self-assembly of intermediate filaments. Finally, unlike many components of the dystrophin protein complex, we show that syncoilin expression is up-regulated in dystrophin-deficient muscle. These data suggest that alpha-dystrobrevin provides a link between the dystrophin protein complex and the intermediate filament network at the neuromuscular junction, which may be important for the maintenance and maturation of the synapse.
Deamination of Amino Acids in vivo by Rumen Microorganisms (1959)

Five individual amino acids, beta-alanine, DL-aspartic acid, L-glutamic, glycine and L-lysine, were fed to a fistulated steer. Significant deamination, as indicated by ammonia production in the rumen, was demonstrated with beta-alanine, DL-aspartic acid and L-glutamic acid. The break down in the rumen of amino acids into ammonia and other materials varies.
Progress in hypotensive component of γ-Glutamylmethylamide (2010)

γ-Glutamylmethylamide is a special amino acid and plays an important role in organism especially for the effective hypertensive action. The characteristics of γ-glutamylmethylamide in plant,microorganism and animal were summarized systematically. In addition,the synthesize methods were introduced in detail. Meanwhile,advantages and disadvantages of these methods were discussed. Furthermore,the development prospect and future application were presented.
Laryngeal Reinnervation Featuring Refined Nerve‐Muscle Pedicle Implantation Evaluated via Electromyography and Use of Coronal Images (2015)

The LEMG findings and coronal imaging suggest that NMP implantation may have enabled successful reinnervation of the laryngeal muscles of UVFP patients.
A Simultaneous Information Transfer and Channel-Sounding Modulation Technique for Wide-Band Channels (1965)

A method of superimposing a pseudorandom channelsounding signal by amplitude modulation upon a conventional FM information-bearing signal is described. The important feature of the technique is the method of combining the pseudorandom waveform with the FM signal so that one component of the AM channel-sounding spectrum is stationary and unaffected by the frequency modulation. Coherent detection and cross correlation are used at the receiver to recover the "transfer function" of the medium, while the FM information signal is recovered by conventional FM detection methods. The technique is considered most applicable to a two-directional tropospheric scatter link in which a low data-rate feedback channel is available to command changes in parameters of the transmitted signal, based on the analysis at the receiver of the instantaneous transfer function of the medium, to optimize channel transmission. Parameters of the transmitter which might be varied are power, deviation, data rate, carrier frequency, etc. (It is assumed that the bandwidth of the channel-sounding signal is considerably wider than the information modulation bandwidth.)
ChemInform Abstract: Dihydroacepentalenediide, the Dianion of Acepentalene. (1987)

Abstract The title compound is the dianion of the salt (II) which is obtained from the reaction of the tricyclic compound (I) in a mixture with KH (130‐135%).
Studies on the red yeast cell wall. II. Purification and some properties of red yeast cell wall lytic enzyme. (1976)

The red yeast cell wall lytic enzyme of Penicillium lilacinum No. 2093 was purified about 220 fold with a yield of 22% from the culture filtrate by ammonium sulfate fractionation, DEAE-cellulose and CM-cellulose column chromatography and Bio-Gel P-60 gel filtration. The enzyme was most active at pH 4.0_??_4.5 and 50°C. The enzyme was stable at pH value from 3.5 to 7.0 on 20 hr incubation at 37°C. The enzyme released reducing sugar from the red yeast cell walls, but Saccharomyces yeasts did not show any susceptibility to the enzyme.