gebhart/patrepeval huggingface dataset:
Control Design for a Bottoming Solid Oxide Fuel Cell Gas Turbine Hybrid System (2006)

A bottoming 275kW planar solid oxide fuel cell (SOFC) gas turbine (GT) hybrid system control approach has been conceptualized and designed. Based on previously published modeling techniques, a dynamic model is developed that captures the physics sufficient for dynamic simulation of all processes that affect the system with time scales of >10ms. The dynamic model was used to make system design improvements to enable the system to operate dynamically over a wide range of power output (15–100% power). The wide range of operation was possible by burning supplementary fuel in the combustor and operating the turbine at variable speed for improved thermal management. The dynamic model was employed to design a control strategy for the system. Analyses of the relative gain array (RGA) of the system at several operating points gave insight into input/output (I/O) pairing for decentralized control. Particularly, the analyses indicate that, for SOFC/GT hybrid plants that use voltage as a controlled variable, it is beneficial to control system power by manipulating fuel cell current and to control fuel cell voltage by manipulating the anode fuel flowrate. To control the stack temperature during transient load changes, a cascade control structure is employed in which a fast inner loop that maintains the GT shaft speed receives its set point from a slower outer loop that maintains the stack temperature. Fuel can be added to the combustor to maintain the turbine inlet temperature for the lower operating power conditions. To maintain fuel utilization and to prevent fuel starvation in the fuel cell, fuel is supplied to the fuel cell proportionally to the stack current. In addition, voltage is used as an indicator of varying fuel concentrations, allowing the fuel flow to be adjusted accordingly. Using voltage as a sensor is shown to be a potential solution to making SOFC systems robust to varying fuel compositions. The simulation tool proved effective for fuel cell/GT hybrid system control system development. The resulting SOFC/GT system control approach is shown to have transient load-following capability over a wide range of power, ambient temperature, and fuel concentration variations.
High-resolution radioautographic study of dopamine binding sites in the rat neostriatum using 3H-domperidone. (1983)

The possibility to use the new ligand 3H-domperidone to identify some dopamine binding sites at the ultrastructural level was assessed in the neostriatum after in vivo administration and high-resolution radioautography. Since this ligand does not cross the blood-brain barrier, intracerebral injections were performed, which resulted in a gradient of diffusion of the tracer. According to increasing distances to the injection site, a quantitative study of the radioautographic reaction was realized. An intense and diffuse reaction took place in the vicinity of the injection site in control rats. On the contrary, numerous accumulations of silver grains were observed in the peripheral zone. The statistical analysis of the distribution of the clusters showed that they were more numerous over the contacts between nerve terminals and dendritic spines than expected from a distribution at random; moreover half of these labelled contacts were differentiated in synapses of the asymmetric type. When the animals were pretreated with haloperidol in order to block the dopaminergic binding sites, we found a decrease in the total number of the number of silver grains. A decrease in the number of clusters of silver grains was noted over nerve terminals and synaptic contacts in both peripheral zones while the nonspecific labelling was increased over other structures. We conclude to the possibility of the detection of the dopaminergic binding sites by electron microscopic radioautography. Moreover we confirm the existence of dopaminergic synapses in the neostriatum with this new technique.
Cover Picture: Macromol. Mater. Eng. 8/2014 (2014)

Cover: A chess piece made of a chitosan-based composite (queen) behind a commercial chess piece (king). The study on the correlation between molecular arrangement and mechanical characteristics of chitinous materials leads to use of the second most abundant biopolymer on earth for manufacture of several large-scale 3D objects and composites. Further details can be found in the article by J. G. Fernandez and D. E. Ingber* on page 932.
Conjugation in Cyclopropanes. Attempted Acylation, Alkylation, Cyanoethylation and Deuterium Exchange<sup>1</sup> (1959)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTConjugation in Cyclopropanes. Attempted Acylation, Alkylation, Cyanoethylation and Deuterium Exchange1George W. Cannon, Arthur A. Santilli, and Popkin ShenianCite this: J. Am. Chem. Soc. 1959, 81, 16, 4264–4266Publication Date (Print):August 1, 1959Publication History Published online1 May 2002Published inissue 1 August 1959https://pubs.acs.org/doi/10.1021/ja01525a037https://doi.org/10.1021/ja01525a037research-articleACS PublicationsRequest reuse permissionsArticle Views66Altmetric-Citations-LEARN 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
THE IRRADIATION OF SOME GLYCINE‐CONTAINING DIPEPTIDES ON SILICA GEL (1967)

Abstract— When glycylphenylalanine and phenylalanylglycine were irradiated on thin layers of silica gel G, peptide bond fission, diketopiperazine formation and deamination occured. The products were identified by thin‐layer chromatogrpahy on the same plate, procedure which enables very small quantities of material to be irradiated.
Cluster-promoted water conservation by larvae of the American dog tick,<i>Dermacentor variabilis</i>(Acari: Ixodidae) (1999)

Abstract Larvae in groups retained water more effectively than when isolated. Clustering by tick larvae is considered an adaptive behavior to help reduce water loss.
Characteristics of Field Effect Transistors based on Fullerene Derivatives (2007)

Transport properties of nine fullerene derivatives, [6,6]-phenyl-C61-butyric methyl ester (PCBM), phenyl C61-butyric acid i-butyl ester (PCBIB), and others (PCBNB, PYC11-PhOH, PMFE, PMFTB, 70PCBM, 56PCBM, 60X-LT) were studied by measuring of the field effect mobility. FETs were fabricated by spin coating of their chloroform solutions on Si/SiO2 substrate with Au top contacts. The field induced carriers were all negative. The threshold voltage to induce carrier was more than 40 V. Mobility of PCBM was 1.1×10-2 cm2/(V s) being the largest amongst them. The mobilities of PCBIB, PCBNB, 70PCBM were ranging 1.7–5.6×10-3 cm2/(V s). The mobilities of PYC11-phOH, 56PCBM, 60X-LT were ranging 4.0–6.4×10-4 cm2/(V s) and those of PMFE and PMFTB being less than 10-7 cm2/(V s). The transport properties are discussed taking the surface morphologies and absorption spectra into consideration.
In vitro inhibition of matriptase prevents invasive growth of cell lines of prostate and colon carcinoma (2005)

Matriptase, also known as membrane-type-serine-protease 1 (MT-SP 1), is a type II transmembrane serine protease involved in the activation of the precursor form of hepatocyte growth factor/scatter factor (pro-HGF/SF). Since HGF/SF is a well-known extracellular signal, which plays a key role in the control of invasive growth, we investigated the effects of matriptase inhibition in cell lines derived from colon (DLD-1) or prostate (PC-3) carcinomas. Biochemical analysis showed that matriptase was very efficient in the proteolytic conversion of the inactive HGF/SF precursor into HGF/SF. Inhibition of endogenous matriptase synthesis in DLD-1 or PC-3 cells by specific small interfering RNAs impaired the conversion of pro-HGF/SF into HGF/SF at the cell surface and inhibited cell scattering upon pro-HGF/SF stimulation. The same effect was observed after treatment of these cells with matriptase inhibitors of the 3-amidinophenylalanine-type, CJ-697 or CJ-730. Inhibition of matriptase significantly reduced invasion of the extracellular matrix as well. Interestingly, this reduction was observed even in the presence of pre-activated HGF/SF. It is concluded that matriptase plays a dual-role in the events unleashing the invasive phenotype, one 'upstream' from the HGF/SF signalling cascade and one 'downstream', most likely at the level of the plasminogen activation system. These data provide a proof of concept for the targeting of matriptase in the search for anti-invasive drugs.
Receptor accessory folding helper enzymes: the functional role of peptidyl prolyl <i>cis</i>/<i>trans</i> isomerases (2001)

Receptor accessory peptidyl prolyl cis/trans isomerases (PPIases) of the FKBP and cyclophilin types form receptor heterocomplexes with different stabilities. PPIases have been found to associate with other receptor heterocomplex constituents via either proline-directed active sites or additional domains of the enzymes. The single-domain PPIases FKBP12 and FKBP12.6 are shown to interact with receptor protein kinases and calcium channels at their active sites. In contrast, heterooligomeric nuclear receptors contain multi-domain PPIases like FKBP51, FKBP52 or cyclophilin 40 that directly interact with the chaperone hsp90 via the tetratricopeptide repeat modules of the folding helper enzymes. PPIases play a critical role in the functional arrangement of components within receptor heterocomplexes.
Age-related changes in sarcoplasmic reticulum Ca(2+)-ATPase and alpha-smooth muscle actin gene expression in aortas of normotensive and spontaneously hypertensive rats. (1993)

The expression of the sarcoplasmic reticulum (SR) Ca(2+)-ATPase gene and the SR Ca2+ pump function were investigated in thoracic aortas of 5- and 17-week-old normotensive Wistar-Kyoto (WKY) rats and spontaneously hypertensive rats (SHRs). The relative level of the two isoforms of SR Ca(2+)-ATPase mRNA expressed in the aorta (i.e., SERCA 2a and SERCA 2b) was determined by quantitative S1 nuclease protection analysis and normalized to the level of alpha-smooth muscle (alpha-Sm) actin mRNA. The level of alpha-Sm actin mRNA itself was normalized to the level of 18S ribosomal RNA using slot-blot hybridization assays. Total SR Ca2+ pump activity was estimated by measuring the rate of oxalate-supported Ca2+ uptake in homogenates. At 5 weeks, the amount of SERCA 2a and SERCA 2b mRNA, normalized to 18S ribosomal RNA, and the ratio of alpha-Sm actin mRNA to 18S RNA were identical in SHR and WKY rats. The Ca2+ pump activity was similar in the two strains of rats at 5 weeks. From 5 to 17 weeks, the amount of SERCA 2a mRNA increased in both strains while the level of SERCA 2b mRNA remained constant. The Ca2+ pump activity was unchanged in SHRs and tended to decrease in WKY rats. Accordingly, the change in the ratio of the SR Ca(2+)-ATPase mRNA isoforms does not appear to influence SR function. The level of alpha-Sm actin mRNA and SERCA 2a mRNA increased in parallel from 5 to 17 weeks in both strains.(ABSTRACT TRUNCATED AT 250 WORDS)
ChemInform Abstract: STRAINED AROMATIC SYSTEMS. SYNTHESIS OF CYCLOPROPABENZOCYCLOBUTENES, CYCLOPROPANAPHTHOCYLOBUTENES, AND RELATED COMPOUNDS (1981)

Abstract Synthesis of Cyclopropabenzocyclobutenes, Cyclopropanaphthocyclobutenes, and Related Compounds.
Incidence and sensory evaluation of injection-site lesions in beef top sirloin butts. (1996)

The effects of ongoing quality assurance initiatives on the national incidence of injection-site lesions and the impact of these lesions on the sensory characteristics of top sirloin butts were examined by a series of audits and two experiments. The national incidence of injection-site lesions in top sirloin butts (n = 98,192) has not changed between July 1993 (10.91%) and July 1995 (10.19%). However, during this same period, the mean weight of injection-site lesion trim increased (P < .05) from 102.63 +/- 12.56 g to 152.81 +/- 13.24 g. Eighty percent of lesions examined during this period were classified as chronologically "older," originating from injections given either during preweaning, stocking, or in the early feeding period; however, there was an increase (P < .01) in the incidence of nodular scars during the audit period, likely created by intramuscular injections during the mid- to late-feeding periods. Warner-Bratzler shear measurements of lesion-afflicted steaks taken near the site of lesions and in areas up to 7.62 cm from the lesion center were significantly greater than similar measurements on control top sirloin steaks. Panelist tenderness scores for mildly lesioned steaks were lower (P < .05) and had greater within-(P < .01) and among- (P < .05) steak variation than control (normal) steaks. Mean juiciness ratings were higher (P < .001) for lesioned steaks; however, steak flavor intensity variation was greater within injection-site lesioned vs control top sirloin steaks, with undesirable flavors reported by panelists. Injection-site lesions still occur at an unacceptable frequency in the top sirloin butt, and those lesions, if not removed entirely, can dramatically reduce the desirability of top sirloin steaks.
A new method for the estimation of silicon in silicon tetrachloride (1950)

Abstract A new method has been devised for the estimation of silicon in silicon tetrachloride. It is based on a quantitative esterification with absolute ethyl alcohol, the silicon content of the resulting ester being estimated.
<b>Points</b> : AIDS: an old disease from Africa? (1984)

What annoys me mostA Doctor (P G UPTON
Interactions of Triethylenethiophosphoramide, Estrogen and Gonadotropin On the Ovary of Hypophysectomized Immature Rat. (1961)

SummaryIn the hypophysectomized weanling rat triethylenethiophosphoramide (Thio-TEPA) produced quantitative destruction of granulosa cells and ova. Stimulation of the ovary by pituitary gonadotropin was antagonized by Thio-TEPA, resulting in blocking of luteinization and formation of cystic follicles. Diethylstilbestrol partially protected against destructive effects of Thio-TEPA on the ovary allowing luteinization to proceed. Under all circumstances Thio-TEPA caused a quantitative reduction in ovarian weight over a period of 5 days.
Surface normal deblurring caused by conveyor movement for fast surface inspection (2013)

These days there are many real-time 3D measurement systems. Those method has finite exposure time, therefore the motion blur is inevitable in principle. We developed a motion deblurring technique in surface orientation images using a correlation image sensor for 1D movement by belt conveyor. This imaging system consists of two components; one is ring-shaped modulation illumination for encoding surface orientation into the amplitude and phase of the reflected light intensity, and the other is the three-phase correlation image sensor (3PCIS) for demodulating the amplitude and phase of reflected light. The higher spatial frequency components which is lost by motion are captured by modulation imaging using correlation image sensor. The reconstruction algorithm is proposed for modulation imaging picture which is complex value image representing surface orientation. We applied wiener filtering method, and then still normal vector image is successfully reconstructed.
Mullite Whisker - Molybdenum Disilicide Composites (2008)

Molybdenum disilicide - based materials are potential high temperature structural materials, but lack room temperature fracture toughness and high temperature creep resistance. Mullite has intrinsic creep resistance, and may provide extrinsic toughening in whisker form. Composites of molybdenum disilicide reinforced with mullite whiskers have been made by a powder processing route. Ambient and elevated temperaure mechanical property predictions and measurements have been made, and correlated with the microstructure of the composites observed by scanning and transmission electron microscopy.
Influence of surface structure on the phonon-assisted emission process in the ZnO nanowires grown on homoepitaxial films (2009)

We carried out temperature-dependent photoluminescence measurements to investigate the influence of surface roughness on the phonon-assisted emission of the surface-tailored ZnO nanowires (NWs). For the rough ZnO NWs, the observation of strong defect emission with vibration peaks by the exciton-phonon coupling reflects the presence of a high density of surface defects, resulting in a rapid shift to lower energy region of free exciton emission and a strong contribution of the first order phonon-assisted free exciton in ultraviolet emission. This investigation indicates that the surface defects associated with roughness have a significant influence on the phonon-assisted exciton emission.
Coke as a Fuel for Commercial Vehicles (1921)

JUST as it is generally considered a good rule when travelling, to drink the "wine " of the country, p o in motor transport the rule should be to use as far as poesible the fuel of the country, or the particular part of the country, where the transport is needed, in preference to employing an imported fuel, which must almost necessarily be more expensive, for example, the so-called " white coal " (water power) of Scandinavia, which is now utilised so effectively for industrial purposes.Again, improved transport facilities are needed for the development of many countries with no water power and which do not yield either coal or oil, but which have abundant supplies of wood from which charcoal can be readily made.Excellent charcoal is made in a primitive fmhion by the natives in many places at a cost not e x d i n g $1 per ton, which is equivalent to petrol a t less than sixpence per gall on.Contrast this simple method for the preparation of an efficient transport fuel from material found on the spot, with the difficulties in tho production of motor alcohol.We are informed by the alcohol experts that systematic cultivation in the tropics of sago palms, mawrha trees, or other sources of alcohol, could supply the world with all the motor spirit wxmsary.The carrying out of this appanentJy simple proposition has been found to involve very serious practical difficulties, of which the following may be mentioned: -(a) The big aapital expenditure in preparing and cultivating extensive plantations.(b) The lack of revenue for wveral years before the plantations become fruitful.(c) The cost of making and maintaining hundreds of miles of roads, and the organisation of transport for collection of the crops and delivery to the distilleries.(d) The oo& of building and equipping distilleries.(e) The need for an abundant supply of w a h for the distilleries.(fj The problem of obtaining the nemsary labour for the plan-( g ) The problem of denaturing the spirit in order to protect the tations and distiUeries.revenue from loss.
Study of breakdown inside a supercritical plasma switch (2013)

Summary form only given. Supercritical fluid(SCF), characterized by high pressure and high density, combines the advantage of gas and liquid: high ability of mass transfer (dense, high diffusivity and low viscosity) and high heat transfer (high heat conductivity). Research on discharge behavior of SCF in high electrical field are more recent and less common, and are also motivated by new environmental and economical reasons. SCF has high potential in high power switching area, and is proposed to be the alternative for high voltage switching medium, owing to its distinguished advantage of high breakdown strength, fast dielectric recovery, and low impact to environment. In conventional circuit breakers, SCF would be the perfect substitute medium for SF6 which is a powerful greenhouse gas and after use is highly toxic. In this work the design of a versatile SC switch up to 200 bar with adjustable heavy duty electrodes, and imbedded current and voltage sensor is briefly introduced. The gas supply (adjustable flow rate from 5 - 700 Liter/h) and repetitive pulse voltage source (30 kV peak value, up to 1kHz repetition rate) enable measurement of breakdown voltage and breakdown delay time inside SC nitrogen, corresponding to variations of parameters such as voltage repetition rate, gap width and gas flow rate through the gap. Via a simultaneous triggering system, breakdown inside a SC nitrogen switch is pictured by a pico-second fast CCD camera, providing space and time parameters for theoretical analysis of breakdown and subsequent dielectric recovery inside a SCF.
Melanogenesis and malignant melanoma : biochemistry, cell biology, molecular biology, pathophysiology, diagnosis, and treatment : proceedings of the International Symposium on Melanogenesis and Malignant Melanoma, Fukuoka, Japan, 4-6 December 1995 (1996)

Biochemistry and molecular biology of melanogenesis in benign and malignant tissues immunological approaches for malignant malanoma biochemical analysis on the expression of specific proteins in melanoma diagnosis of malignant melanoma treatment of malignant melanoma.
OS1-2-4 One-shot Shape and Deformation Measurement Method Using DMD Camera (2007)

Noncontacting shape measurement for 3-D objects is important in automated manufacturing, component quality control, reverse engineering, etc. Phase-shifting method effectively attains high resolution and high accuracy in analyzing phase information on a projected grating. This technique, however, is difficult to be applied to dynamic condition since usually it requires several images. We developed a digital micromirror device (DMD) camera for phase analysis. In this paper, an one-shot shape and deformation measurement method using a DMD camera is proposed. The DMD camera consists of a DMD, a CCD, and two imaging lenses. In optics of the DMD camera, individual DMD mirrors correspond to individual CCD pixels. The DMD on-off binary pattern can be changed more than 6900 times in one second using an accessory light modulator package (ALP) controller board. Individual DMD mirrors operate as controllable high-speed shutters for corresponding CCD pixels. The four phase-shifted images can be recorded within one frame of the CCD camera. Therefore, shape measurement in dynamic condition can be realized without using a high-speed camera. In order to obtain the 3-D information of shape, multiple reference planes are used to calibrate the relationship between phase value and 3D coordinates. The principle and hardware are presented. In an experiment under dynamic condition, 3D shape information can be analyzed from only one captured image.
[Air in the portal system and mesenteric infarction. Value of ultrasonic examination. Apropos of a case]. (1985)

Chez un homme de 37 ans infarctus intestinal avec thrombose de l'axe mesentericoporte et presence de bulles d'air au niveau du tronc porte et de ses branches intrahepatiques. Images echographiques. Resection de 65 cm de grele
Adaptive Loading Algorithm Implemented in AMOOFDM for Next Generation PON System Integrating Cost-Effective and Low-Bandwidth Optical Devices (2009)

International audience
Ultrastructural Characterization of Serum-Induced Changes in the Tegument of Taenia taeniaeformis (1983)

George A. Conder, Alan A. Marchiondo, Jeffrey F. Williams, Ferron L. Andersen, Ultrastructural Characterization of Serum-Induced Changes in the Tegument of Taenia taeniaeformis, The Journal of Parasitology, Vol. 69, No. 5 (Oct., 1983), pp. 838-845