gebhart/patrepeval huggingface dataset:
Vibration and Operational Characteristics of a Composite-Steel (Hybrid) Gear (2014)

Hybrid gears have been tested consisting of metallic gear teeth and shafting connected by composite web. Both free vibration and dynamic operation tests were completed at the NASA Glenn Spur Gear Fatigue Test Facility, comparing these hybrid gears to their steel counterparts. The free vibration tests indicated that the natural frequency of the hybrid gear was approximately 800 Hz lower than the steel test gear. The dynamic vibration tests were conducted at five different rotational speeds and three levels of torque in a four square test configuration. The hybrid gears were tested both as fabricated (machined, composite layup, then composite cure) and after regrinding the gear teeth to the required aerospace tolerance. The dynamic vibration tests indicated that the level of vibration for either type of gearing was sensitive to the level of load and rotational speed.
Volatiles of wild blueberry, Vaccinium angustifolium: possible attractants for the blueberry maggot fruit fly, Rhagoletis mendax (1989)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTVolatiles of wild blueberry, Vaccinium angustifolium: possible attractants for the blueberry maggot fruit fly, Rhagoletis mendaxFulgentius N. Lugemwa, Wilber Lwande, Michael D. Bentley, Michael J. Mendel, and A. Randall AlfordCite this: J. Agric. Food Chem. 1989, 37, 1, 232–233Publication Date (Print):January 1, 1989Publication History Published online1 May 2002Published inissue 1 January 1989https://pubs.acs.org/doi/10.1021/jf00085a053https://doi.org/10.1021/jf00085a053research-articleACS PublicationsRequest reuse permissionsArticle Views316Altmetric-Citations41LEARN 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
Behavioral modeling for timing, noise, and signal integrity analysis (2002)

I/O behavioral modeling in the form of IBIS models has gained wide acceptance in signal integrity analysis. While the IBIS model accurately represents the characteristics of the output pin at three fixed process corners, it does not model driver delay or account for variations in temperature, supply voltages, and input transition rate. In this paper, we present a behavioral modeling technique that captures driver delay for timing analysis, driver output characteristics for signal integrity, and pre-drive currents for noise and power grid analysis; all are functions of temperature, supply voltages, and input transition rate.
Density functional and Monte Carlo studies of sulfur. II. Equilibrium polymerization of the liquid phase (2003)

The equilibrium polymerization of sulfur is investigated by Monte Carlo simulations. The potential energy model is based on density functional results for the cohesive energy, structural, and vibrational properties as well as reactivity of sulfur rings and chains [Part I, J. Chem. Phys. 118, 9257 (2003)]. Liquid samples of 2048 atoms are simulated at temperatures 450⩽T⩽850 K and P=0 starting from monodisperse S8 molecular compositions. Thermally activated bond breaking processes lead to an equilibrium population of unsaturated atoms that can change the local pattern of covalent bonds and allow the system to approach equilibrium. The concentration of unsaturated atoms and the kinetics of bond interchanges is determined by the energy ΔEb required to break a covalent bond. Equilibrium with respect to the bond distribution is achieved for 15⩽ΔEb⩽21 kcal/mol over a wide temperature range (T⩾450 K), within which polymerization occurs readily, with entropy from the bond distribution overcompensating the increase in enthalpy. There is a maximum in the polymerized fraction at temperature Tmax that depends on ΔEb. This fraction decreases at higher temperature because broken bonds and short chains proliferate and, for T⩽Tmax, because entropy is less important than enthalpy. The molecular size distribution is described well by a Zimm–Schulz function, plus an isolated peak for S8. Large molecules are almost exclusively open chains. Rings tend to have fewer than 24 atoms, and only S8 is present in significant concentrations at all T. The T dependence of the density and the dependence of polymerization fraction and degree on ΔEb give estimates of the polymerization temperature Tf=450±20 K.
Degradation of Neurotensin by Rat Brain Synaptic Membranes: Involvement of a Thermolysin‐Like Metalloendopeptidase (Enkephalinase), Angiotensin‐Converting Enzyme, and Other Unidentified Peptidases (1983)

Neurotensin was inactivated by membrane-bound and soluble degrading activities present in purified preparations of rat brain synaptic membranes. Degradation products were identified by HPLC and amino acid analysis. The major points of cleavage of neurotensin were the Arg8-Arg9, Pro10-Tyr11, and Tyr11-Ile12 peptide bonds with the membrane-bound activity and the Arg8-Arg9 and Pro10-Tyr11 bonds with the soluble activity. Several lines of evidence indicated that the cleavage of the Arg8-Arg9 bond by the membrane-bound activity resulted mainly from the conversion of neurotensin1-10 to neurotensin1-8 by a dipeptidyl carboxypeptidase. In particular, captopril inhibited this cleavage with an IC50 (5.7 nM) close to its K1 (7 nM) for angiotensin-converting enzyme. Thiorphan inhibited the cleavage at the Tyr11-Ile12 bond by the membrane-bound activity with an IC50 (17 nM) similar to its K1 (4.7 nM) for enkephalinase. Both cleavages were inhibited by 1,10-phenanthroline. These and other data suggested that angiotensin-converting enzyme and a thermolysin-like metalloendopeptidase (enkephalinase) were the membrane-bound peptidases responsible for cleavages at the Arg8-Arg9 and Tyr11-Ile12 bonds, respectively. In contrast, captopril had no effect on the cleavage at the Arg8-Arg9 bond by the soluble activity, indicating that the enzyme responsible for this cleavage was different from angiotensin-converting enzyme. The cleavage at the Pro10-Tyr11 bond by both the membrane-bound and the soluble activities appeared to be catalyzed by an endopeptidase different from known brain proline endopeptidases. The possibility is discussed that the enzymes described here participate in physiological mechanisms of neurotensin inactivation at the synaptic level.
Superresolution size determination in fluorescence microscopy: A comparison between spatially modulated illumination and confocal laser scanning microscopy (2004)

Recently developed far field light optical methods are a powerful tool to analyze biological nanostructures and their dynamics, in particular including the interior of three-dimensionally conserved cells. In this article, the recently described method of spatially modulated illumination (SMI) microscopy has been further extended to the online determination of the extension of small, subwavelength sized, fluorescent objects (nanosizing). Using fluorescence excitation with 488 nm, the determination of fluorescent labeled object diameters down to 40 nm corresponding to about 1/12th of the wavelength used for one-photon excitation could be shown. The results of the SMI nanosizing procedure for a detailed, systematic variation of the object diameter are presented together with a fast algorithm for online size evaluation. In addition, we show a direct comparison of the diameter of “colocalization volumes” between SMI nanosizing and conventional confocal laser scanning microscopy.
Pressing the right buttons: signaling in lymphangiogenesis (2014)

Lymphatic vasculature is increasingly recognized as an important factor both in the regulation of normal tissue homeostasis and immune response and in many diseases, such as inflammation, cancer, obesity, and hypertension. In the last few years, in addition to the central role of vascular endothelial growth factor (VEGF)-C/VEGF receptor-3 signaling in lymphangiogenesis, significant new insights were obtained about Notch, transforming growth factor β/bone morphogenetic protein, Ras, mitogen-activated protein kinase, phosphatidylinositol 3 kinase, and Ca(2+)/calcineurin signaling pathways in the control of growth and remodeling of lymphatic vessels. An emerging picture of lymphangiogenic signaling is complex and in many ways distinct from the regulation of angiogenesis. This complexity provides new challenges, but also new opportunities for selective therapeutic targeting of lymphatic vasculature.
Association of<i>Fusobacterium nucleatum</i>infection with colorectal cancer in Chinese patients (2016)

F. nucleatum was enriched in CRC tissues and associated with CRC development and metastasis.
Intraocular Fibrinolysis With Recombinant Human Tissue Plasminogen Activator (1987)

Intraocular fibrin formation following ocular surgery is a potentially binding problem. Current therapy for this postoperative fibrin response is often ineffective. In the rabbit, we developed a quantitative reproducible model for intraocular fibrin deposition. Using this model, we have tested the efficacy of human tissue plasminogen activator (tPA) in promoting intraocular fibrinolysis. Citrated rabbit plasma (0.2 mL) was injected intracamerally following paracentesis, resulting in fibrin clot formation within three hours. The fibrin clots were stable for four days, and then slowly lysed over the next four days. Approximately 24 hours after clot formation, various concentrations of human tPA were injected intracamerally. The time taken for clot lysis was dose dependent, with 1800 IU of tPA producing clot lysis in three hours. Toxicity, as measured by intraocular pressure, corneal thickness, inflammation, or cataract formation, was minimal.
Sparse representation for face recognition based on discriminative low-rank dictionary learning (2012)

In this paper, we propose a discriminative low-rank dictionary learning algorithm for sparse representation. Sparse representation seeks the sparsest coefficients to represent the test signal as linear combination of the bases in an over-complete dictionary. Motivated by low-rank matrix recovery and completion, assume that the data from the same pattern are linearly correlated, if we stack these data points as column vectors of a dictionary, then the dictionary should be approximately low-rank. An objective function with sparse coefficients, class discrimination and rank minimization is proposed and optimized during dictionary learning. We have applied the algorithm for face recognition. Numerous experiments with improved performances over previous dictionary learning methods validate the effectiveness of the proposed algorithm.
Direct Measurement of the Percolation Probability in Carbon Nanofiber-Polyimide Nanocomposites (2009)

We present the first experimental measurement of the geometric critical exponent beta associated with the percolation probability, the probability a metallic filler belongs to the conducting network, of an electrical composite. The technique employs conducting-tip atomic force microscopy to obtain a conducting areal density, and is demonstrated on polyimide nanocomposites containing different concentrations of carbon nanofibers. We find beta approximately 1 and t (the exponent for bulk conductivity) approximately 3. These values are consistent with the predictions for the Bethe lattice and larger than the values predicted in the 3D lattice percolation model. Hence, this electrical composite likely belongs to the same universality class as the Bethe lattice. The ability to measure geometric and transport critical exponents on the same material is critical to drawing this conclusion.
Analysis of influencing factors in real estate prices based on stochastic gradient regression model (2009)

The components of house prices and several main influencing factors partially affected by the policies in the market price system were analyzed in this thesis. Then the stochastic gradient regression theory was introduced briefly. The method of the stochastic gradient regression was taken to analyze the real data of Tianjin commercial real estate sale prices in the past decade. The relativity analysis results of the factors influencing housing prices in Tianjin were shown by using stochastic gradient regression model according to the relevant data of Tianjin housing prices after 1998. The influencing degree that the main factors affected the changes of Tianjin commercial real estate prices during the recent years were explained in detail and concluded in this paper.
HIV Restriction Factors and Mechanisms of Evasion (2012)

Retroviruses have long been a fertile model for discovering host-pathogen interactions and their associated biological principles and processes. These advances have not only informed fundamental concepts of viral replication and pathogenesis but have also provided novel insights into host cell biology. This is illustrated by the recent descriptions of host-encoded restriction factors that can serve as effective inhibitors of retroviral replication. Here, we review our understanding of the three restriction factors that have been widely shown to be potent inhibitors of HIV-1: namely, APOBEC3G, TRIM5α, and tetherin. In each case, we discuss how these unrelated proteins were identified, the mechanisms by which they inhibit replication, the means used by HIV-1 to evade their action, and their potential contributions to viral pathogenesis as well as inter- and intraspecies transmission.
Dynamic thermal clock skew compensation using tunable delay buffers (2006)

The thermal gradients existing in high-performance circuits may significantly affect their timing behavior, in particular by increasing the skew of the clock net and/or altering hold/setup constraints, possibly causing the circuit to operate incorrectly. The knowledge of the spatial distribution of temperature can be used to properly design a clock network that is able to compensate such thermal non-uniformities. However, re-design of the clock network is effective only if temperature distribution is stationary, i.e., does not change over time. In this work, we specifically address the problem of dynamically modifying the clock tree in such a way that it can compensate for temporal variations of temperature. This is achieved by exploiting the buffers that are inserted during the clock network generation, by transforming them into tunable delay elements. Temperature-induced delay variations are then compensated by applying the proper tuning to the tunable buffers, which is computed off-line and stored in a tuning table inserted in the design. We propose an algorithm to minimize the number of inserted tunable buffers, as well as their tunable range (which directly relates to complexity). Results show that clock skew is kept within original bounds with minimum area and power penalty. The maximum increase in power is 23.2% with most benchmarks exhibiting less than 5% increase in power.
Treatment of Hirsutism With Spironolactone (1982)

Clinical and endocrine evaluations of 39 patients with hirsutism were performed to determine the effectiveness and site(s) of action of an antiandrogenic compound, spironolactone. Treatment with spironolactone at a dose of 200 mg/day resulted in a clear beneficial effect on the quantity and quality of facial hair growth in 19 of 20 patients with moderate to severe hirsutism. Regression of hirsutism in terms of diameter, density, and the rate of facial hair growth was noticeable within two months. The maximal effect was observed at six months and was maintained at 12 months of treatment. Spironolactone was equally effective in reducing hirsutism in women with polycystic ovary syndrome and idiopathic hirsutism. These clinical observations were associated with a prompt and sustained reduction in levels of androgen of ovarian origin without affecting levels of adrenal androgen and cortisol. Apart from diuresis, which was limited to the first few days of treatment, there were no discernible side effects the one year of this study. Our results indicate that spironolactone is a highly effective and safe agent for the treatment of hirsutism through its inhibitory action on both ovarian androgen secretion and peripheral androgen action.
Effect of anode bias on plasma confinement in direct current magnetron discharges (1994)

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 J. R. Doyle, A. Nuruddin, J. R. Abelson; Effect of anode bias on plasma confinement in direct current magnetron discharges. Journal of Vacuum Science & Technology A 1 May 1994; 12 (3): 886–888. https://doi.org/10.1116/1.579273 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 ContentAVS: Science & Technology of Materials Interfaces and ProcessingJournal of Vacuum Science & Technology A Search Advanced Search |Citation Search
Information Pyramids: A New Approach to Visualising Large Hierarchies (1997)

This paper presents work in progress on a new technique for visualising and manipulating large hierarchies. The Information Pyramids approach compactly visualises hierarchical structures in three dimensions using pyramid-like structures, which grow upwards as the hierarchy is descended. The technique is described in the context of our early experience with a prototype file system visualiser based on Information Pyramids.
Virtual non-contrast dual-energy CT compared to single-energy CT of the urinary tract: a prospective study (2012)

Image quality of VNC images obtained with the new generation of DECT is still slightly inferior compared to native images. However, the difference is smaller with the new compared to the older system.
A Mechanically Robust and Highly Ion‐Conductive Polymer‐Blend Coating for High‐Power and Long‐Life Lithium‐Ion Battery Anodes (2014)

A mechanically robust and ion-conductive polymeric coating containing two polymers, polyethylene glycol tert-octylphenyl ether and poly(allyl amine), with four tailored functional groups is developed for graphite and graphite-Si composite anodes. The coating, acting as an artificial solid electrolyte interphase, leads to remarkable enhancement in capacity reversibility and cycling stability, as well as a high-rate performance of the studied anodes.
Roles of Press Felt in Press Section of Paper Machine (2000)

The functions required of press felt for paper machines are mainly water removal, web conveyance, and paper surface finish. The water removal performance of felts is closely related to steam consumption during the paper drying process and is a very important factor in determining energy consumption costs.Studies on water removal at the press section have been carried out by many researchers. The mechanism of water removal published by Wahlström in 1960 is the theory that is met with wide acceptance even today. Wahlström studied the process of water removal at the press nip which he divided into four phases and established a press model equation for sheet moisture ratio after the press nip based on peak pressure, flow resistance, evenness of pressure distribution, and rewetting.Nip peak pressure is the force required for pressing the sheet and squeezing the water out and is determined by machine and felt factors. Flow resistance is the resistance which occurred when the water flows at the cell walls, in between fibers, and at the inside of the felt while the pressure is loaded to both the sheet and felt. Even pressure distribution plays an important role in water removal at the press, especially in the case of a low basis weight sheet.Rewetting is water transference from the felt to sheet at the exiting side of the nip, caused by volume expansions of both the felt and sheet, capillary action, and water film splitting. Although water removal performance of felts plays an important role in cost reduction of paper production, felts need to have other critical functions. Therefore, it is very important for us feltmakers to have close discussions with paper makers on felt performance for designing the most suitable felts.
Endothelium-Dependent Enhancement of Force Generation to Vasoconstrictors After Trauma in the Rodent Posterior Cerebral Artery in vitro (1994)

DeWitt, Douglas S. Ph.D.; Bukoski, Richard D. Ph.D.; Wang, Shi-Nan M.D.; Bian, Ka M.D.; Prough, Donald S. M.D. Author Information
Azabicyclic Alcohols. IV. Stereochemistry of the 1- and 2-Hydroxyindolizidine and Hydroxypyrrolizidine Systems<sup>1a</sup> (1966)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAzabicyclic Alcohols. IV. Stereochemistry of the 1- and 2-Hydroxyindolizidine and Hydroxypyrrolizidine Systems1aHerbert S. Aaron, Charles P. Rader, and George E. Wicks Jr.Cite this: J. Org. Chem. 1966, 31, 11, 3502–3507Publication Date (Print):November 1, 1966Publication History Published online1 May 2002Published inissue 1 November 1966https://pubs.acs.org/doi/10.1021/jo01349a008https://doi.org/10.1021/jo01349a008research-articleACS PublicationsRequest reuse permissionsArticle Views111Altmetric-Citations28LEARN 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
Characterization of a Heat Stable Protease from Arrowtooth Flounder; (1993)

Sodium dodecyl sulfate gel electrophoresis revealed rapid proteolytic degradation of myosin heavy chain in heated arrowtooth flounder muscle. A proteolytic enzyme of approximately 32,000 molecular weight was extracted from the muscle and purified 125 fold. Activity of the semi-purified enzyme at 55°C was optimal against casein at pH 6.0-7.0. Incubation with chemical reagents indicated the involvement of sulfhydryl groups in enzyme activity.