gebhart/patrepeval huggingface dataset:
Double parity sparing for performance improvement in disk arrays (2002)

RAID level 5 disk arrays provide highly reliable, cost effective secondary storage with high performance for reads and large writes. Small writes, however, cause the degradation of their performance, since small writes need additional disk accesses to update parity data. There have been many studies to overcome this problem. In this paper, we propose a new technique, double parity sparing, which is a variation of disk array with a spare. To improve the parity update process, the proposed scheme uses a spare block and a parity block as two available parity blocks. We present results from simulations to show that the proposed scheme offers better performance while there is no failure in disk arrays.
Isolation and structure of pancratistatin (1984)

Pancratium littorale Jacq. Collected in Hawaii has beenfound to produce a new phenanthridone, pancratistatin, that significantly inhibits growth of the murine P388 lymphocytic leukaemia; an X-ray crystal structure determination of pancratistatin monomethyl ether (1c) was employed to assign structure (1a) to pancratistatin.
Synthesis, Characterization and Ethylene Polymerization Activity of Zirconium Complexes Containing Nonsymmetric Diamido Ligands Derived from 2-Aminobenzylamine (2001)

Several N,N′-bis(trialkylsilyl)-substituted diamines of the general formula [(SiR3)2-ABA]H2 [ABA = 2-amidobenzylamido, SiR3 = SiMe3 (1a), SiMePh2 (1b), SiMe2tBu (1c) or SiiPr3 (1d)], together with related compounds in which the substituents of the two nitrogen atoms are different, e.g. [(SiMePh2)(SiMe3)-ABA]H2 (1g), have been synthesized. Their reaction with 2 equiv. of nBuLi afforded the dilithiated derivatives, which reacted with ZrCl4 to yield metallaspirocyclic complexes of the type Zr[(SiR3)2-ABA]2. Protonolysis of Zr(NMe2)4 with 1 equiv. of the parent diamines led to the monosubstituted complexes Zr[(SiR3)2-ABA](NMe2)2 [SiR3 = SiMe3 (4a), SiMePh2 (4b) or SiMe2tBu (4c)] and Zr[(SiMePh2)(SiMe3)-ABA](NMe2)2 (4g) in high yield, and subsequent reaction with excess SiMe3Cl afforded the dichlorides Zr[(SiMe3)2-ABA]Cl2 (5a), Zr[(SiMe2tBu)2-ABA]Cl2 (5c), and Zr[(SiMePh2)(SiMe3)-ABA]Cl2 (5g). The X-ray crystal structure of 5c shows that it forms dimers via two Zr−Cl bridges; moreover, a bonding interaction between the zirconium centre and the aryl ipso-carbon atom linked to the anilinic nitrogen atom is evident. A hydrochlorinated derivative of 5c, Zr[(SiMe2tBu)2(H)-ABA]Cl3 (6c), was also analysed by X-ray diffraction and shown to exhibit analogous structural characteristics. Low-temperature NMR studies revealed all these complexes to be fluxional and permitted an insight into the molecular structures in solution. The ABA framework undergoes a rocking motion about the corresponding ZrN2 plane, whose activation energy is between 37 and 43 kJ mol−1. Compounds 3 and 5 exist as several stereoisomers that interconvert by this process. On activation with MAO, the dichloride complexes of type 5 polymerize ethylene at both room temperature and pressure to yield linear high molecular mass polyethylenes with a broad molecular mass distribution.
<title>101-frame algorithm for phase-shifting interferometry</title> (1997)

Phase shifting interferometry (PSI) is one of the more common techniques for interpolation between interference fringes. A surface-profiling PSI instrument stores CCD image frames of fringe patterns for a series of reference phases; then applies a mathematical algorithm to recover phase information.1 Because the wavefront phase itself is a linear function of the surface profile, PSI provides a high-resolution measurement of the surface figure. In the early days, computational limits restricted the number of image frames to three or four, which does not leave much room for variation. As demands for precision have increased, so have the length and variety of phase-shifting algorithms. The state of the art has advanced to 5, 7 and even 15 frame varieties. At the same time, the level of sophistication in deriving these algorithms has risen dramatically.234 This paper explores the limits of these trends, while reviewing some of the mathematical techniques that we at Zygo use to analyze PSI performance. Finally, in an attemptto predict far into the future, I present a 101-frame algorithm that is highly resistant to error sources. This somewhat extreme example highlights the practical limits on algorithm length, which are actually more relaxed than one might think, provided that we loosen the definition of PSI.
V-Commerce: Vending Machine Technology (2003)

This work is brought to you for free and open access by FIU Digital Commons. It has been accepted for inclusion in Hospitality Review by an
Evidence of luminous bacterial symbionts in the light organs of myctophid and stomiiform fishes (1991)

The myctophids and stomiiforms represent two common groups of luminous fishes, but the source of luminescence in these animals has remained undetermined. In this study, labeled luciferase gene fragments from luminous marine bacteria were used to probe DNA isolated from specific fish tissues. A positive signal was obtained from skin DNA in all luminous fishes examined, whereas muscle DNA gave a weaker signal and brain DNA was negative. This observation is consistent with luminous bacteria acting as the light source in myctophids and stomiiforms and argues against the genes necessary for luminescence residing on the fish chromosomes. To confirm the location of this signal, a bacterial probe was hybridized in situ to sections of a stomiiform. A strong signal was generated directly over specific regions of the fish light organs, whereas no signal was found over other internal or epidermal tissues of the fish. Taken together, these data provide the first indication that luminous bacterial symbionts exist in myctophids and stomiiforms and that these symbionts account for luminescence in these fishes.
Magnetization and magnetostriction processes in Tb(0.27−0.30)Dy(0.73−0.70)Fe(1.9−2.0) (1997)

The present analysis provides Tb(0.27−0.30)Dy(0.73−0.70)Fe(1.9−2.0) magnetization and magnetostriction states during applied magnetic field and stress processes by minimizing the total magnetic free energy in the presence of a parameter selected inverse exponential magnetic free energy distribution. A comparison between experimental and model results shows that the model provides a qualitatively accurate description of the magnetostriction and magnetization in Tb(0.27−0.30)Dy(0.73−0.70)Fe(1.9−2.0) during applied magnetic field processes for a range of constant uniaxial applied stresses. Therefore, the model appears to be a useful tool for the analysis of Tb(0.27−0.30)Dy(0.73−0.70)Fe(1.9−2.0) applications with constant stress or strain dependent stress states. Furthermore, the good qualitative agreement between model and experiment supports the contention that the magnetostriction and magnetization response of Tb(0.27−0.30)Dy(0.73−0.70)Fe(1.9−2.0) is influenced by a defect induced defocusing of local magnetization direction about the average magnetization direction.
Histocompatibility antigens in systemic lupus erythematosus (1976)

Histocompatibility (HL-A) antigens were determined in 120 patients with systemic lupus erythematosus (SLE) and 120 matched controls. Increased frequencies of HL-A1 and HL-A8 were found. HL-A1 was more strongly associated with SLE in black patients (71 patients), whereas HL-A8 was more impressively associated with SLE in white patients (49 patients). In addition HL-A1 appeared more frequently in those with early onset of disease in both races; and HL-A1, HL-A8, and the HL-A1,8 phenotype seemed to be associated with severe SLE (renal and central nervous system involvement) in white patients. These data support the proposal that there are genetic influences in the pathogenesis and expression of SLE.
Inhibition ofIn Vitro Human LDL Oxidation by Phenolic Antioxidants from Grapes and Wines (1996)

Current research suggests that wine contains substances that may reduce the mortality rate from coronary diseases. The oxidation of low-density lipoprotein (LDL) is thought to be a key step in the development of atherosclerosis. Phenolic fractions of a Petite Syrah wine were evaluated for their antioxidant activity in inhibiting LDL oxidation in vitro. The more active fractions contained components of the catechin family. The catechin oligomers and the procyanidin dimers (B2, B3, B4, B6, B8) and trimers (C1, C2) were extracted, isolated and purified from grapes seeds. These compounds were tested for their inhibition of LDL oxidation, along with other monomeric wine phenolics. The procyanidin dimers B2 and B8, and trimer C1, and the monomers catechin, epicatechin and myricetin had the highest antioxidant activity. The procyanidin dimers B3, B4 and C2 and the monomers gallic acid, quercetin, caffeic acid, and rutin, and a group of compounds that included the dimer B6, ellagic acid, sinapic acid, cyanidin had lower antioxidant activity and α-tocopherol had the least activity. Thus, the numerous phenolic compounds found in wine are potent antioxidants in inhibiting LDL oxidationin vitro.
A Double-Blind, Delayed-Start Trial of Rasagiline in Parkinson's Disease (2009)

Early treatment with rasagiline at a dose of 1 mg per day provided benefits that were consistent with a possible disease-modifying effect, but early treatment with rasagiline at a dose of 2 mg per day did not. Because the two doses were associated with different outcomes, the study results must be interpreted with caution. (ClinicalTrials.gov number, NCT00256204.)
New Chromone Alkaloids from the Stem Bark of<i>Schumanniophyton magnificum</i> (1988)

Fractionation of a methanolic extract of the stem bark of SCHUMANNIOPHYTON MAGNIFICUM yielded large quantities of mannitol. In addition, noreugenin and ten related chromone alkaloids were isolated. Seven of these alkaloids had been isolated previously from S. MAGNIFICUM and one other from S.PROBLEMATICUM but two of the alkaloids were novel, one was hydroxy- N-methylschumannificine and the other was the acetate of N-demethylrohitukine. The structures of the two alkaloids have been deduced from their spectral features.
Regulated Exocytosis in Chromaffin Cells (1997)

The ADP-ribosylation factor (ARF) GTP-binding proteins are believed to function as regulators of vesicular budding and fusion along the secretory pathway. To investigate the role of ARF in regulated exocytosis, we have examined its intracellular distribution in cultured chromaffin cells by subcellular fractionation and immunoreplica analysis. We found that ARF6 is specifically associated with the membrane of purified secretory chromaffin granules. Chemical cross-linking and immunoprecipitation experiments suggested that ARF6 may be part of a complex with betagamma subunits of trimeric G proteins. Stimulation of intact chromaffin cells or direct elevation of cytosolic calcium in permeabilized cells triggered the rapid dissociation of ARF6 from secretory granules. This effect could be inhibited by AlF4- which selectively activates trimeric G proteins. Furthermore, a synthetic myristoylated peptide corresponding to the N-terminal domain of ARF6 strongly inhibited calcium-evoked secretion in streptolysin-O-permeabilized chromaffin cells. The possibility that ARF6 plays a role in the effector pathway by which trimeric G proteins control exocytosis in chromaffin cells is discussed.
Terahertz Quantum-Cascade Lasers and Active Terahertz Metamaterials (2010)

Abstract not Available.
<b>Pyridoxine and Pyridoxal Analogs. VI. Electronic Absorption Spectra of Schiff Bases</b> (1963)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPyridoxine and Pyridoxal Analogs. VI. Electronic Absorption Spectra of Schiff BasesDietrich. Heinert and Arthur E. MartellCite this: J. Am. Chem. Soc. 1963, 85, 2, 183–188Publication Date (Print):January 1, 1963Publication History Published online1 May 2002Published inissue 1 January 1963https://pubs.acs.org/doi/10.1021/ja00885a017https://doi.org/10.1021/ja00885a017research-articleACS PublicationsRequest reuse permissionsArticle Views415Altmetric-Citations89LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts
Study on Face Robot Platform as a KANSEI Medium (2001)

The objective of this study is to investigate the intelligence necessary for machines such as a humanfriendly robot working in the environment where human and robot coexist. It seems to be required to manufacture the human-friendly robot that can communicate with human beings as a test bed and/or platform. Since face and facial expressions are very crucial factors for communication, we have been developing a face robot, which has a human-like face and can express facial expressions as similar as human being. The important factors of face robot for coexistence and communication with humans are 1. human size and compact, and 2. easy to control. While we have used air cylinders with pressurized air for the old face robot, to accomplish these two factors, we have decided to use a SMA (shaped memory alloy) actuators driven by electricity. In this paper, we present the prototype of SMA-actuated new face robot and show the basic ability.
Regulation of Transcript Levels of a Potato Gibberellin 20-Oxidase Gene by Light and Phytochrome B (2000)

Up to three gibberellin (GA) 20-oxidase genes have now been cloned from several species including Arabidopsis, bean (Phaseolus vulgaris), and potato (Solanum tuberosum). In each case the GA 20-oxidase genes exhibit different patterns of tissue expression. We have performed extensive northern analysis on one of the potato GA 20-oxidase genes (StGA20ox1), which is the only one that shows significant transcript levels in leaves. We show that levels of StGA20ox1 transcript are elevated in transgenic antisense plants that have reduced levels of phytochrome B (PHYB) compared with wild-type plants, implicating PHYB in the control of GA biosynthesis. We show that StGA20ox1 transcript levels vary in leaves of different age throughout the plant and cycle throughout the day, furthermore they are up-regulated by light and down-regulated in the dark. The degree of the response to the light-on signal is similar in potato plants deficient in phytochrome A or PHYB and wild-type plants. The induction of StGA20ox1 by blue light raises the possibility that a blue light receptor may be involved in the control of this gene by light.
A tag recommendation system for folksonomy (2009)

Social bookmarking tools become more and more popular nowadays and tagging is used to organize information and allow users to recall or search the resources. Users need to type the tags whenever they post a resource, so that a good tag recommendation system can ease the process of finding some useful and relevant keywords for users. Researchers have made lots of relevant work for tag recommendation systems, but those traditional collaborative systems may not perform well in the case of a new user and a new resource.
Acetyl-Coenzyme A Carboxylase from the Marine Prymnesiophyte <italic>Isochrysis galbana</italic> (1990)

Acetyl-CoA carboxylase [Acetyl-CoA carbon dioxide ligase (ADP forming), EC 6.4.1.2] was purified to an apparent homogeneity from the marine prymnesiophyte Isochrysis galbana. The purification steps included ammonium sulphate precipitation sucrose density gradient and monomeric avidin affinity chromatography. The enzyme recovery was less than 10% with 300 fold purification. The molecular mass of the native enzyme was estimated at 700 kDa by elution from a calibrated Sepharose 6B column. Polyacrylamide gel electrophoresis containing sodium dedocyl sulphate revealed a single subunit of 160 kDa that contained biotin. Investigation of the kinetic properties of the purified enzyme indicated Km for acetyl CoA, NaHCO3 and ATP of about 310, 910 and 51 μM respectively. Malonyl CoA and palmitoyl CoA were found as highly potent inhibiting metabolites. These metabolites competitively inhibited the enzyme with respect to acetyl CoA. Polyclonal antibodies prepared against the subunit of the purified enzyme effectively inhibited the enzyme activity in an in vitro system. The prepared antibodies used in an immunoblot system specifically bound to acetyl CoA carboxylase subunit of I. galbana. These antibodies failed to react with a corresponding subunit of the enzyme from a diatom, indicating a poor immunological conservation of that protein among algal classes.
STUDIES IN SULPHONES. PART IV. SOME SUBSTITUTED ALKYL-ARYL AND DI-ARYL SULPHONES (1947)

By reacting sodium p-acetaminobenzene sulphinate with various alkyl halides, monochloroacetone, picryl chloride, p-nitrobenzyl bromide, ethylene chlorhydrin, benzoquinone and thymoquinone, the corresponding unsymmetrical sulphones have been synthesised. The action of diethyl bromomalonate and dicyandiamide on 4-nitro-4'-aminodiphenylsulphone has also been studied.
Removal of deleterious glucosides from safflower meal (1979)

Abstract Safflower meal is a source of high quality protein for animal feeds but has not been used for human consumption because it is bitter and mildly cathartic. Deleterious glucosides in the meal were removed or modified by extraction with either water at the iso‐electric point or with methanol, enzymatic treatment with β‐glucosidase, dialysis, or by processing to pre‐pare protein isolates. Analytical procedures were de‐vised for quantitative measurement of two phenolic glucosides reported to be associated with bitterness and cathartic activity in safflower meal, and for es‐timating the cathartic activity of safflower meals and fractions.
Minocycline‐Based Europium(III) Chelate Complexes: Synthesis, Luminescent Properties, and Labeling to Streptavidin (2009)

Abstract Two chelate ligands for europium(III) having minocycline (=(4 S ,4a S ,5a R ,12a S )‐4,7‐bis(dimethylamino)‐1,4,4a,5,5a,6,11,12a‐octahydro‐3,10,12,12a‐tetrahydroxy‐1,11‐dioxonaphthacene‐2‐carboxamide; 5 ) as a VIS‐light‐absorbing group were synthesized as possible VIS‐light‐excitable stable Eu 3+ complexes for protein labeling. The 9‐amino derivative 7 of minocycline was treated with H 6 TTHA (=triethylenetetraminehexaacetic acid=3,6,9,12‐tetrakis(carboxymethyl)‐3,6,9,12‐tetraazatetradecanedioic acid) or H 5 DTPA (=diethylenetriaminepentaacetic acid= N , N ‐bis{2‐[bis(carboxymethyl)amino]ethyl}glycine) to link the polycarboxylic acids to minocycline. One of the Eu 3+ chelates, [Eu 3+ (minocycline‐TTHA)] ( 13 ), is moderately luminescent in H 2 O by excitation at 395 nm, whereas [Eu 3+ (minocycline‐DTPA)] ( 9 ) was not luminescent by excitation at the same wavelength. The luminescence and the excitation spectra of [Eu 3+ (minocycline‐TTHA)] ( 13 ) showed that, different from other luminescent Eu III chelate complexes, the emission at 615 nm is caused via direct excitation of the Eu 3+ ion, and the chelate ligand is not involved in the excitation of Eu 3+ . However, the ligand seems to act for the prevention of quenching of the Eu 3+ emission by H 2 O. The fact that the excitation spectrum of [Eu 3+ (minocycline‐TTHA)] is almost identical with the absorption spectrum of Eu 3+ aqua ion supports such an excitation mechanism. The high stability of the complexes of [Eu 3+ (minocycline‐DTPA)] ( 9 ) and [Eu 3+ (minocycline‐TTHA)] ( 13 ) was confirmed by UV‐absorption semi‐quantitative titrations of H 4 (minocycline‐DTPA) ( 8 ) and H 5 (minocycline‐TTHA) ( 12 ) with Eu 3+ . The titrations suggested also that an 1 : 1 ligand Eu 3+ complex is formed from 12 , whereas an 1 : 2 complex was formed from 8 minocycline‐DTPA. The H 5 (minocycline‐TTHA) ( 12 ) was successfully conjugated to streptavidin (SA) ( Scheme 5 ), and thus the applicability of the corresponding Eu 3+ complex to label a protein was established.
Development of a Surface-Modified Contact Lens for the Transfer of Cultured Limbal Epithelial Cells to the Cornea for Ocular Surface Diseases (2009)

Our aim was to develop an improved cell transfer system for delivering laboratory-cultured human limbal epithelial cells to the cornea, which would be low risk for the patient and convenient to use for the surgeon. We took a standard contact lens and developed a plasma polymer layer for coating this for attachment of cells to the lens and subsequent transfer of cells to the cornea. A range of plasma polymer surfaces were examined for initial cell attachment using three different combinations of human and rabbit epithelial and stromal cells, initially expanding cells both with and without bovine serum. The most promising surfaces, based on acrylic acid, were then coated onto contact lenses. Cell transfer from the lenses to the denuded surface of a 3D rabbit organ culture model was then used to make a second selection of substrates, which permitted reliable cell transfer. Primary rabbit and human corneal cells attached and proliferated well on acrylic acid-coated surfaces. Reliable transfer of primary epithelial cells from the coated contact lenses to a rabbit cornea was achieved by coating lenses with acrylic acid at 5 W/10 cm(3)/min and using cell densities of 1 x 10(5)/lens and above.
ACOUSTIC COMPACTION LAYER DETECTION (2005)

The ASAE standardized tool to detect the depth and strength of compaction layers in the field is the conepenetrometer. Since this method is point-to-point, researchers have experimented with on-the-fly alternatives that can be usedas, or in combination with, a standard tillage tool. On-the-fly compaction layer sensing also enables adaptive tillage, wherethe soil is only tilled as deep as necessary, which can lead to significant energy savings and erosion reduction. Wedged tips,strain gauges mounted on a deflecting tine, air bubbles pushed into the soil, as well as ground-penetrating radar have beentested for this purpose. In this research, passive acoustics was used to detect the compaction layer by recording the soundof a cone being drawn through the soil. The premise was that a more compacted layer should cause higher sound levels, whichmight reveal the depth and strength of the compaction layer. Two experiments were conducted in the soil bins of the USDA-ARSNational Soil Dynamics Laboratory in Auburn, Alabama. First, constant-depth tests (15 and 30 cm) at three compaction levels(0.72, 2.8, and 3.6 MPa) revealed the relationship of sound amplitude with depth and compaction. Second, to test the detectioncapability, the cone was gradually inserted in the soil, passing through an artificial compaction layer. A windowed, short-timeFourier transform (STFT) analysis showed that the compaction layer is detectable since the sound amplitude was positivelyrelated to depth and compaction levels, but only in the highest frequency range of the spectrum. This led to the conjecturethat the soil-cone interface acts as a low-pass filtering mechanism, where the cutoff frequency becomes higher in thecompaction layer due to a more intimate contact between sensor and soil.