gebhart/patrepeval huggingface dataset:
An Experimental Study on Air Leakage and Heat Transfer Characteristics of a Rotary - type Heat Recovery Ventilator (2004)

This study investigates the air leakage and heat transfer characteristics of a commercially available rotary-type air-to-air heat exchanger with a fiber polyester matrix. Crossover leakage between the exhaust and supply air is measured using a tracer gas method for various ventilation rates and rotational speeds of the wheel. A correlation equation for the leakage is obtained by summing up pressure leakage and carryover leakage. The pressure leakage is observed to be a function of ventilation rate only, and the carryover leakage is found to be a linear function of wheel speed. The real efficiency of the heat exchanger can be obtained from its apparent efficiency by taking into account the leakage ratio. The heat recovery efficiency decreases, as the ventilation rate increases. As the wheel speed increases, however, the efficiency increases initially but reaches a constant value for the speeds over 10rpm.
Distributed Topology Control for Stable Path Routing in Mobile Ad Hoc Networks (2009)

Isr develops, applies and teaches advanced methodologies of design and analysis to solve complex, hierarchical, heterogeneous and dynamic prob-lems of engineering technology and systems for industry and government. Isr is a permanent institute of the university of maryland, within the
Discriminative low-rank metric learning for face recognition (2015)

Metric learning has attracted increasing attentions recently, because of its promising performance in many visual analysis applications. General supervised metric learning methods are designed to learn a discriminative metric that can pull all the within-class data points close enough, while pushing all the data points with different class labels far away. In this paper, we propose a Discriminative Low-rank Metric Learning method (DLML), where the metric matrix and data representation coefficients are both constrained to be low-rank. Therefore, our approach can not only dig out the redundant features with a low-rank metric, but also discover the global data structure by seeking a low-rank representation. Furthermore, we introduce a supervised regularizer to preserve more discriminative information. Different from traditional metric learning methods, our approach aims to seek low-rank metric matrix and low-rank representation in a discriminative low-dimensional subspace at the same time. Two scenarios of experiments, (e.g. face verification and face identification) are conducted to evaluate our algorithm. Experimental results on two challenging face datasets, e.g. CMU-PIE face dataset and Labeled Faces in the Wild (LFW), reveal the effectiveness of our proposed method by comparing with other metric learning algorithms.
Inhibition and Activation of Bacterial Luciferase Synthesis (1972)

Luciferase synthesis is repressed when bioluminescent bacteria are inoculated into fresh medium but is induced after the cells have grown in the medium for some time. In minimal medium, an activator which leads to induction of the enzyme is released into the medium by the bacteria. Complete medium contains a dialyzable and quite stable inhibitor which leads to repression of luciferase. The bacteria remove the inhibitor from the medium and also produce activator, thus allowing synthesis of the enzyme. Two unidentified nonluminescent strains of bacteria were unable to remove the inhibitor. Two different bioluminescent strains, Photobacterium fischeri and P. fischeri strain MAV, produce specific activators that are ineffective with cells of the other strain. The two activators are different with respect to heat stability, but both are small molecules. The activators can be assayed on the basis of their ability to counteract the inhibitor. Identification of the inhibitor and the activators may allow the bioluminescent system to be linked to other metabolic processes of the cells.
Synthesis of 4,5-dihydro-3H-1,3-benzodiazepines and 4,5-dihydro-1H-2,4-benzodiazepines (1968)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis of 4,5-dihydro-3H-1,3-benzodiazepines and 4,5-dihydro-1H-2,4-benzodiazepinesHerman R. Rodriguez, Barbara A. Zitko, and George De StevensCite this: J. Org. Chem. 1968, 33, 2, 670–676Publication Date (Print):February 1, 1968Publication History Published online1 May 2002Published inissue 1 February 1968https://pubs.acs.org/doi/10.1021/jo01266a042https://doi.org/10.1021/jo01266a042research-articleACS PublicationsRequest reuse permissionsArticle Views233Altmetric-Citations13LEARN 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
Charge delocalization and structural response in layered<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">La</mml:mi></mml:mrow><mml:mrow><mml:mn>1.2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Sr</mml:mi></mml:mrow><mml:mrow><mml:mn>1.8</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Mn</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">O</mml:mi></mml:mrow><mml:mrow><mml:mn>7</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>: Enhanced distortion in the metallic regime (1997)

Temperature-dependent neutron diffraction studies on melt-grown crystals of the layered compound ${\mathrm{La}}_{1.2}$${\mathrm{Sr}}_{1.8}$${\mathrm{Mn}}_{2}$${\mathrm{O}}_{7}$ reveal a dramatic structural response to the onset of ferromagnetism and the coincident insulator-metal transition. Unlike the related manganite perovskites, whose Jahn-Teller distorted octahedra become more regular at temperatures below the insulator-metal transition, the ${\mathrm{MnO}}_{6}$ octahedra of this layered material are more severely distorted when the charge is itinerant than when it is localized.
MoO<sub>3</sub> Modification Layer to Enhance Performance of Pentacene-OTFTs With Various Low-Cost Metals as Source/Drain Electrodes (2014)

Three groups of top-contact pentacene organic thin-film transistors (OTFTs) are fabricated with various low-cost metals (Ag, Al, and Cu) as source/drain electrodes. Different thick MoO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> modification layers are inserted between pentacene and metals to optimize the device performance. The evolution of the device performance with the thickness of MoO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> modification layer is independent of the type of metal. The optimized MoO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> thickness of 10 nm is obtained in every group of OTFTs. The data simulation analysis demonstrates that the hole injection was dominated by thermionic emission mechanism at the interfaces of metals/pentacene, whereas the current transport was dominated by trap-limited space-charge-limited current carrier conduction mechanism with a proper thick MoO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> modification layer between metals and pentacene, indicating that MoO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> can significantly enhance the injection ability of holes, which is the origin of the device performance improvements in OTFTs with MoO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> modification layer.
Potentiated Necrosis of Cultured Cortical Neurons by Neurotrophins (1995)

The effects of neurotrophins on several forms of neuronal degeneration in murine cortical cell cultures were examined. Consistent with other studies, brain-derived neurotrophic factor, neurotrophin-3, and neurotrophin-4/5 all attenuated the apoptotic death induced by serum deprivation or exposure to the calcium channel antagonist nimodipine. Unexpectedly, however, 24-hour pretreatment with these same neurotrophins markedly potentiated the necrotic death induced by exposure to oxygen-glucose deprivation or N-methyl-D-aspartate. Thus, certain neurotrophins may have opposing effects on different types of death in the same neurons.
Silver migration control in electrically conductive adhesives (2006)

Although conductive adhesives have been studied for many years as a lead-free alternative in electronic industry, applications of electrically conductive adhesives (ECAs) for electronic interconnect are limited to low voltage display driver devices. This is due to the serious concerns associated with the long-term reliability and high voltage application issues caused by the silver migration. In this study, a novel approach to reduce silver migration and enhance the long-term reliability of conductive adhesives is discovered by using self-assembled monolayer molecular wires. The approach enhances the long-term reliability and durability of conductive adhesives and enables the ECA for high voltage applications. In addition, the self-assembled molecular wires help the dispersion of conductive fillers (in particular, nano-sized (<100 nm) conductive fillers) in the polymer matrix and enhance the electrical conductivity of conductive adhesives. Due to the high current density of those functional molecular monolayers, the current carrying capability of conductive adhesives can also be improved significantly
Rapid, Specific Determination of Iodine and Iodide by Combined Solid-Phase Extraction/Diffuse Reflectance Spectroscopy (2001)

A new, rapid methodology for trace analysis using solid-phase extraction is described. The two-step methodology is based on the concentration of an analyte onto a membrane disk and on the determination by diffuse reflectance spectroscopy of the amount of analyte extracted on the disk surface. This method, which is adaptable to a wide range of analytes, has been used for monitoring ppm levels of iodine and iodide in spacecraft water. Iodine is used as a biocide in spacecraft water. For these determinations, a water sample is passed through a membrane disk by means of a 10-mL syringe that is attached to a disk holder assembly. The disk, which is a polystyrene-divinylbenzene composite, is impregnated with poly(vinylpyrrolidone) (PVP), which exhaustively concentrates iodine as a yellow iodine-PVP complex. The amount of concentrated iodine is then determined in only 2 s by using a hand-held diffuse reflectance spectrometer by comparing the result with a calibration curve based on the Kubelka-Munk function. The same general procedure can be used to determine iodide levels after its facile and exhaustive oxidation to iodine by peroxymonosulfate (i.e., Oxone reagent). For samples containing both analytes, a two-step procedure can be used in which the iodide concentration is calculated from the difference in iodine levels before and after treatment of the sample with peroxymonosulfate. With this methodology, iodine and iodide levels in the 0.1-5.0 ppm range can be determined with a total workup time of approximately 60 s with a RSD of approximately 6%.
'Rhupus' Syndrome (1988)

• Occasionally patients with overlapping features of rheumatoid arthritis (RA) and systemic lupus erythematosus (SLE), termed "rhupus," have been encountered. We wanted to ascertain the frequency of such patients and determine whether they represent a unique overlap syndrome. Of approximately 7000 new patients evaluated over 11 years, we identified six patients who had, on the average, 6.7 American Rheumatism Association criteria for RA and 4.2 criteria for SLE. Criteria for RA included chronic symmetric arthritis with morning stiffness (six patients); subcutaneous nodules (two patients); positive rheumatoid factors test (four patients); and radiologic erosions (four patients). The criteria for SLE included malar rash (three patients); discoid lupus erythematosus (two patients); biopsy-proved nephritis (one patient); photosensitivity (one patient); leukopenia/thrombocytopenia (four patients); positive antinuclear antibodies or lupus erythematosus cell test (six patients); hypocomplementemia (two patients); and abnormal results from skin biopsy (two patients). During observations of up to ten years, the conditions of three patients were stable or improved, one died, and two were unavailable for follow-up. Patients usually did not have conditions that evolved to classic rheumatic disease patterns. Rhupus was not common and did not occur more frequently (0.09% prevalence among our patients) than expected from chance concurrence of SLE and RA (calculated at 1.2%). These observations confirm that rhupus indeed exists as a syndrome manifested by patients sharing features of probable coincidental concurrence of RA and SLE, but not as a unique clinical pathologic or immunologic syndrome. Appreciation of these patients with rhupus is important since their therapy and outcome differ from those having RA or SLE alone. (<i>Arch Intern Med</i>1988;148:1633-1636)
Development and Application of a TPS Ablation Sensor for Flight (2008)

Isotherm following sensors, which are sometimes referred to as recession sensors for historical reasons, have been resurrected and modified to quantify low density thermal protection system (TPS) material response. The modifications presented herein have dramatically improved reliability, accuracy, and data quality. Extensive research of TPS response on atmospheric entry vehicles for the Department of Defense was conducted in the 1960s, requiring the development of TPS recession sensor technology. The only NASA Earth entry vehicles whose TPS was heavily instrumented are the Apollo test vehicles and the Space Shuttle Orbiter, and only a limited number of sensors have been installed within the TPS of planetary atmospheric reentry probes. Despite advances in computational techniques, relatively large TPS sizing margins are still carried due to uncertainty in the flow environments, uncertainty in TPS material response, and the inability to fully simulate the flight environment in ground tests. TPS instrumentation provides critical engineering and science data that feeds back to aerothermal analyses and physics-based material response models. The acquisition of in-flight heatshield performance data will lead to improvements in the predictions obtained from these models. This, in turn, will greatly benefit future NASA missions by supporting the quantification of TPS risk from design with flight data.
Photopolymerization of dendritic methacrylated polyesters. I. Synthesis and properties (1996)

The so-termed starburst dendritic polyesters differ from classical polymers by their structural symmetry, high degree of branching, and high density of terminal functionality. The divergent synthesis of a series of polydisperse dendritic polyesters based upon pentaerythritol and 1,2,4-benzenetricarboxylic anhydride, modified by glycidvl methacrylate and methacrylic anhydride, is described, proceeding in a stepwise growth manner starting from an “initiator core,” building branched arms. These materials have about eight (two samples), 12, or 16 methacrylate double bonds (indicated as D-1-OH, D-1, D-2, and D-3, respectively) at the chain extremities on each molecule. The rheological behavior was investigated by measuring the dynamic viscosity of the dendritic polyesters. The viscosities of the dendritic polyesters largely decrease in the order D-1-OH, D-1, D-2, and D-3 at lower frequency, but the viscosities of D-1-OH and D-1 decrease dramatically at higher frequency. Using a viscometric cup, the flow time of the dendritic methacrylated polyesters was compared with epoxy acrylate-modified unsaturated polyester of a linear type and it was shown that the flow time for the former is only one-third of that for the latter. The thermal mechanical properties and glass transition temperatures of the UV-cured films increase with the degree of terminal functionality. © 1996 John Wiley & Sons, Inc.
The integrin alpha 6 beta 1 promotes the survival of metastatic human breast carcinoma cells in mice. (1997)

The role of the integrin alpha 6 beta 1 in breast carcinoma progression was studied by targeted elimination of this integrin in MDA-MB-435 cells, a human breast carcinoma cell line that is highly metastatic in athymic mice. The strategy used is based on the finding that expression of a cytoplasmic domain deletion mutant of the beta 4-integrin subunit (beta 4-delta CYT) in MDA-MB-435 cells eliminates formation of the alpha 6 beta 1 heterodimer. MDA-MB-435 cells that lacked alpha 6 beta 1 expression (beta 4-delta CYT transfectants) formed tumors in athymic mice that were suppressed in their growth and that exhibited a significant increase in apoptosis in comparison to the control tumors. Unlike the control MDA-MB-435 cells, the beta 4-delta CYT transfectants were unable to establish metastatic foci in the lungs. Also, the control transfectants grew substantially better than the beta 4-delta CYT transfectants in the liver after intrahepatic injection because of extensive apoptosis in the beta 4-delta CYT transfectants. These data suggest that a major function of the alpha 6 beta 1 integrin in breast carcinoma is to facilitate tumorigenesis and promote tumor cell survival in distant organs.
A direct plasma assay of circulating microRNA-210 of hypoxia can identify early systemic metastasis recurrence in melanoma patients (2015)

Circulating cell-free(cf) microRNAs (miRNAs) have been reported to exist in plasma. MicroRNA-210(miR-210) is known to play important roles in the tumor hypoxic state. We hypothesized that the expression levels of cf-miR-210 in plasma would predict early clinical recurrence in melanoma patients. A direct miRNA assay on plasma (RT-qPCR-DP) was developed to improve cf-miRNA assay logistics, eliminate RNA extraction, and reduce specimen amount required. RNA was extracted from formalin-fixed paraffin-embedded (FFPE) melanoma tissues (n = 108) and assessed by RT-qPCR. Plasma (10 μl; n = 264) was procured from AJCC Stage III/IV patients in phase III clinical trials. A RT-qPCR-DP was performed to detect cf-miR-210. MiR-210 was significantly higher in metastatic tumors compared to primary tumors. Cf-miR-210 was significantly higher in melanoma patients versus healthy donor controls. In serial bloods within individual patients, cf-miR-210 < 3 months prior to disease recurrence significantly increased compared to baseline levels (p = 0.012). ROC curve analysis demonstrated that patients with elevated cf-miR-210 were more likely to have disease recurrence. Moreover, cf-miR-210 increase significantly correlated with poorer prognosis (p < 0.001). Lactate dehydrogenase (LDH) level was also assessed within patients, and the AIC values for proportional hazards regression models of cf-miR-210(120.01) and LDH (122.91) demonstrated that cf-miR-210 is a better recurrence indicator. We concluded enhanced cf-miR-210 provides identification of early systemic melanoma recurrence.
Indoor and Outdoor Positioning in Mobile Environments—a Review and some Investigations on WLAN-Positioning (2004)

Abstract This paper reviews existing indoor and outdoor positioning technologies for mobile users, including GPS and its extensions, wireless communication-networks and others. Accuracy and limitations of these technologies and methods are examined in more detail. Furthermore, results of own investigations concerning Wireless LAN are presented.
Nasal Colonization with <i>Streptococcus pneumoniae</i> Includes Subpopulations of Surface and Invasive Pneumococci (2005)

We demonstrated that during colonization with Streptococcus pneumoniae the nasal mucosal tissues of mice support two populations of pneumococci. Transparent-phase pneumococci can be readily washed from the outer surface, while a second population composed of primarily opaque-phase pneumococci is released only by homogenization of the nasal tissue. The fact that the opaque phase has previously been associated with invasion and the fact that opaque-phase pneumococci were released by homogenization of previously washed nasal tissue suggest that the opaque-phase pneumococci may have invaded the nasal tissue. Consistent with this hypothesis was our observation that there was inflammation in portions of the nasal mucosa of the colonized mice but not in the mucosa of noncolonized mice, but this observation did not prove the hypothesis. If the opaque-phase pneumococci released from the nasal tissue were from within the tissue and/or if resistance of the opaque-phase subpopulation to antibody, complement, and phagocytes is essential for long-term carriage, it seems likely that the virulence factors of S. pneumoniae that are necessary for killing humans exist to facilitate carriage. Although this speculation is unproven, the observation that there are separate populations of pneumococci during colonization may help guide future attempts to understand the biology of nasal colonization by this pathogen.
The Functional Relationship Between the Craniomandibular System, Cervical Spine, and the Sacroiliac Joint: A Preliminary Investigation (2003)

The hypothesis of a functional coupling between the muscles of the craniomandibular system and the muscles of other body areas is still controversial. The purpose of this pilot study was to examine whether there is a relationship between the craniomandibular system, the craniocervical system and the sacropelvic region. To test this hypothesis, the prevalence and localization of dysfunction of the cervical spine and the sacroiliac joint were examined in a prospective, experimental trial. Twenty healthy students underwent an artificial occlusal interference, which caused an occlusal interference. The upper cervical spine (CO-C3) and the sacroiliac joint were examined before, during and after this experimental test. The primary outcome with these experimental conditions was the occurrence of hypomobile functional abnormalities. In the presence of occlusal interference, functional abnormalities were detected in both regions examined and these changes were statistically significant. The clinical implications of these findings may be that a complementary examination of these areas in CMD patients could be useful.