gebhart/patrepeval huggingface dataset:
Wearable Sensing for Dynamic Management of Dense Ubiquitous Media (2009)

Most visions of ubiquitous computing anticipate a world permeated by a dense sampling of sensors, many of which will be capable of capturing, analyzing, and transmitting personally relevant and potentially privacy-sensitive media, such as video, audio, and identification information. This paper describes a set of sensor platforms that we have designed to experiment with personalization, interaction, and control in such dense media capture environments.
Observation of a sterically hindered hydroxyarenesulfenyl chloride: novel base catalyzed dimerization to a diphenoquinone (1984)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTObservation of a sterically hindered hydroxyarenesulfenyl chloride: novel base catalyzed dimerization to a diphenoquinoneStephen D. PastorCite this: J. Org. Chem. 1984, 49, 26, 5260–5262Publication Date (Print):December 1, 1984Publication History Published online1 May 2002Published inissue 1 December 1984https://pubs.acs.org/doi/10.1021/jo00200a052https://doi.org/10.1021/jo00200a052research-articleACS PublicationsRequest reuse permissionsArticle Views130Altmetric-Citations11LEARN 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
Synthesis of in Situ Cross-Linkable Macroporous Biodegradable Poly(propylene fumarate-<i>co</i>-ethylene glycol) Hydrogels (2002)

This study describes a synthesis method of biodegradable macroporous hydrogels suitable as in situ cross-linkable biomaterials. Macroporous hydrogels were based on poly(propylene fumarate-co-ethylene glycol) and prepared via coupled free radical and pore formation reactions. Cross-linking was initiated by a pair of redox initiators, ammonium persulfate and L-ascorbic acid. Pores were formed by the reaction between L-ascorbic acid and sodium bicarbonate, a basic component, which evolved carbon dioxide. Sol fraction of the hydrogels was varied from 0.06 +/- 0.01 to 0.64 +/- 0.01. A stereological approach was used to analyze the morphological properties of the macroporous hydrogels by relating the morphological properties of thin sections to the original three-dimensional macroporous hydrogel. Prepared macroporous hydrogels had porosities between 0.43 +/- 0.08 and 0.84 +/- 0.02 and surface area densities between 55 +/- 3 and 108 +/- 7 cm(-1). Sodium bicarbonate concentration had the greatest effect on both the porosity and surface area density. The effect of copolymer formulation on the porosity and surface area density was insignificant. From thin sections of the macroporous hydrogels, the profile size distributions were determined as an estimate of the pore size distribution. Two formulations synthesized with varying L-ascorbic acid concentration of 0.05 and 0.1 M had median profile sizes of 50-100 and 150-200 microm, respectively. This novel synthesis method allows for the in situ cross-linking of biodegradable macroporous hydrogels with morpholological properties suitable for consideration as an injectable tissue engineering scaffold.
Secondary Hypogonadism in Older Men: Its Relation to Impotence<sup>*</sup> (1990)

The relation of the reproductive endocrine system to impotence in older men was examined by measuring the concentrations of testosterone (T), bioavailable testosterone (BT), LH, and PRL and body mass index (BMI) in 57 young controls (YC), 50 healthy potent older controls attending a health fair (HF), and 267 impotent patients (SD). The SD and HF had markedly reduced mean T and BT values compared to YC. When adjusted for age and BMI there was no difference in BT between potent and impotent older men. The percent BT was much higher in YC than in the older groups. While the percent BT rose significantly with increased T in YC, it was inversely related to T in the older subjects, suggesting that increased sex hormone-binding globulin binding was a primary event leading to a low BT. Forty-eight percent of HF and 39% of SD were hypogonadal, as defined by a mean BT of 2.5 SD or more below the mean of YC (less than or equal to 2.3 nmol/L). Ninety percent of these had LH values in the normal range, suggesting hypothalamic-pituitary dysfunction. Thirty-four SD and six each of YC and older control volunteers (OC) underwent GnRH testing. Older subjects showed impaired responsiveness to GnRH compared to YC. A low basal LH level correlated very highly with hyporesponsiveness to GnRH. Thus, secondary hypogonadism and impotence are two common, independently distributed conditions of older men.
Flow-induced migration of polymers in dilute solution (2006)

We investigate the lateral migration of a confined polymer under pressure driven and uniform shear flows. We employ a hybrid algorithm which couples point particles to a fluctuating lattice-Boltzmann fluid. We observe migration in both uniform shear and pressure driven flows, supporting the idea that migration is driven by a combination of shear and hydrodynamic interactions with the wall, rather than by the shear gradient. Recent numerical and theoretical investigations have suggested that polymers migrate toward the centerline when hydrodynamic interactions are included, but our simulations show that in sufficiently narrow channels there is a reversal of direction and the polymers move toward the wall.
Transformation of Freestanding Carbon-Containing Gold Nanosheets into Au Nanoparticles Encapsulated within Amorphous Carbon: Implications for Surface Modification of Complex-Shaped Materials and Structures (2021)

Freestanding metallic nanosheets (or 2D metals) have been attracting tremendous research interest because of their potential applications in numerous important fields, such as green energy, biomedical imaging, and nanodevices. However, thermal stability of 2D metals received much less attention and remains as an open issue to resolve. Here, we report the first synthesis of large-area freestanding carbon-containing gold nanosheets by polymer surface buckling-enabled exfoliation (PSBEE). Through a systematic study based on flash differential scanning calorimetry, we find that such 2D nanosheets tend to fragment upon heating, which are eventually transformed into nanoparticles of different sizes. Inspired by this interesting finding, we develop a facile method that enables scalable production of crystalline Au nanoparticles encapsulated with amorphous C by isothermally annealing the carbon-containing gold nanosheets. Compared to the traditional methods for the synthesis and deployment of nanoparticles, our nanosheet-based fabrication method is flexible and highly efficient, which can simultaneously synthesize and deploy nanoparticles on different materials regardless of their surface topologies, therefore appealing to various surface-related applications, especially the surface modification of complex-shaped electrodes and biosensors.
Use of stem cells for the treatment of multiple sclerosis (2007)

The reported evidence of neurodegeneration in multiple sclerosis (MS) may explain the lack of efficacy of the currently used immunomodulating modalities and the irreversible axonal damage, which results in accumulating disability. To date, efforts for neuroprotective treatments have not been successful in clinical studies in other CNS diseases. Therefore, for MS, the use of stem cells may provide a logical solution, since these cells can migrate locally into the areas of white-matter lesions (plaques) and have the potential to support local neurogenesis and rebuilding of the affected myelin. This is achieved both by support of the resident CNS stem cell repertoire and by differentiation of the transplanted cells into neurons and myelin-producing cells (oligodendrocytes). Stem cells were also shown to possess immunomodulating properties, inducing systemic and local suppression of the myelin-targeting autoimmune lymphocytes. Several types of stem cells (embryonic and adult) have been described and extensively studied in animal models of CNS diseases and the various models of MS (experimental autoimmune encephalomyelitis [EAE]). In this review, we summarize the experience with the use of different types of stem cells in CNS disease models, focusing on the models of EAE and describe the advantages and disadvantages of each stem cell type for future clinical applications in MS.
[Health state of medical students of Kabardino-Balkarsky University]. (2010)

The studies proved low health state parameters among the medical students examined, so the authors defined scientifically justified measures to improve medical and prophylactic help for students, specified system for the complex monitoring.
Crystallization of icosahedral phase from glassy Pd-U-Si alloys (1986)

The glassy-to-icosahedral phase transformation in Pd-U-Si alloys is studied by using x-ray and transmission electron diffraction. It is found that the transformation is polymorphous and it proceeds via a nucleation and growth process. The nucleation is homogeneous, and a large number of nuclei (\ensuremath{\simeq}${10}^{18}$ ${\mathrm{cm}}^{\ensuremath{-}3}$) are found in the early stage of transformation which can be explained by the existence of short-range icosahedral order in the corresponding glassy phase. It appears that the icosahedral particles grow by atomic attachment at the particle interphase boundary. Some particles are in pentagonal or hexagonal shape, which reflects the internal symmetry of icosahedral phase. Coarsening is believed to occur during the growth process. A picture of the transformation is presented and comparisons are made with other results on glassy-to-icosahedral phase transformations.
Large Electronic Coupling in a Homoconjugated Donor–Acceptor System Involving Carbon-bridged Oligo(<i>p</i>-phenylenevinylene) and Triazine (2014)

We have synthesized a new homoconjugated donor–acceptor (D–A) system featuring a rigid planar carbon-bridged oligo(p-phenylenevinylene) that shows efficient intramolecular charge separation (CS, 98%). The charge recombination rate is 100-times slower than that of CS, and located in the Marcus inverted region. The electronic coupling was estimated to be 1.0 × 103 cm−1, which is one of the largest values among reported D–A interactions.
The combined effect of small volume hypertonic saline and normal saline solutions in uncontrolled hemorrhagic shock. (1992)

Recently, small volume hypertonic saline solution (HTS) has been suggested for treatment of trauma casualties. Previously, we reported that small volume HTS treatment of uncontrolled hemorrhagic shock (UCHS) leads to increased bleeding, hemodynamic deterioration and early mortality. In the present study, large volume normal saline solution (NS) combined with small volume HTS was used to treat UCHS in rats. The rats were randomly assorted into four groups. Group 1 (n = 9) included rats in which UCHS induced by 12 per cent resection of the tail was untreated; group 2 (n = 8) consisted of those in which UCHS was treated after 15 minutes with 41.5 milliliters per kilogram of sodium chloride, 0.9 per cent (NS); group 3 (n = 7) included rats in which UCHS was treated with 5 milliliters per kilogram sodium chloride, 7.5 per cent (HTS); and group 4 (n = 9) included rats in which UCHS was treated by a combination of HTS and NS. In group 1, resection of the tail was followed by bleeding of 4.9 +/- 0.3 milliliters in 15 minutes, a decrease in mean arterial pressure (MAP) from 105 +/- 5 to 51 +/- 3 torr (p less than 0.001) and pulse rate from 377 +/- 9 to 305 +/- 22 beats per minute (p less than 0.05). Further loss of blood after 30 minutes was 0.5 +/- 0.2 milliliters, MAP rose to 58 +/- 6 torr (p less than 0.05) with the death of two rats. Infusion of NS in group 2 was followed by further bleeding of 3.3 +/- 1.0 milliliters (p less than 0.01) and rise in MAP to 76 +/- 9 after 30 minutes. Infusion of HTS in group 3 was followed by bleeding of 1.9 +/- 0.3 milliliters (p less than 0.05) and fall in MAP to 57 +/- 14 torr (p less than 0.05). Continued loss of blood in this group resulted in further fall in MAP to 36 +/- 11 torr (p less than 0.01) with death of 71 per cent (p less than 0.01) of the rats in four hours. Combined HTS and NS infusion in group 4 was followed by bleeding of 2.0 +/- 0.4 milliliters (p less than 0.05) and an increase in MAP to 93.0 +/- 3.0 torr (p less than 0.005) after 30 minutes with the death of only one animal in four hours. Total loss of blood in the three treated groups was similar and significantly higher than in the untreated group.(ABSTRACT TRUNCATED AT 400 WORDS)
Thermosensitive Progesterone Hydrogel: A Safe and Effective New Formulation for Vaginal Application (2015)

Results indicates that GC-P4 retains many characteristics for an effective vaginal delivery system for P4. Therefore we believe that GC-P4 formulation is a promising alternative to current vaginal P4 formulation.
Concepts for Achieving Multi-Stability in Compliant Rolling-Contact Elements (2007)

This paper describes the design of a novel multi-stable compliant mechanism capable of large angle deflections. The multi-stable COmpliant Rolling-contact Element (CORE), reduces friction, allows for large angular displacements, and requires no external force to remain in its multiple equilibrium positions. This paper develops and discusses seven methods to create multi-stable mechanisms from the CORE. These seven methods have different characteristics and advantages.
Broadcasting in an all-optical packet-switched network (2002)

All-optical networks are a strong answer to the huge data traffic demand expected for the forthcoming information society. An interesting networking aspect represents broadcasting in an all-optical environment. This issue is addressed in the present paper for an all-optical network called MATRIX (multiwavelength all optical transparent information exchange). The architecture enables the all-optical interconnection of a large number of nodes with both a small number of wavelengths and wavelength continuity based on a consequent exploitation of wavelength reuse as well as space- and wavelength-division multiplexing. Two different broadcasting schemes are investigated regarding their employment in the network. An analytical model is developed and the corresponding simulation results are in good agreement.
Bulk micromachined electrostatic RMS-to-DC converter (2001)

Bulk micromachining in silicon and glass wafers and subsequent silicon-to-glass anodic bonding have been used for the realization of an electrostatic RMS-to-DC converter. A suspended membrane has been designed for: large dynamic operating range (detection limit by minimum mechanical-thermal noise and high value of the pull-in voltage), maximum bandwidth (low series resistance, high second harmonic suppression using squeeze film damping and suspension beam design), long-term stability, and a sufficient displacement-to-voltage sensitivity (membrane area and suspension arm length). Prototypes are typically composed of a 3 /spl times/ 3 mm/sup 2/ perforated membrane area suspended by four beams of 200 /spl mu/m length, 500 /spl mu/m width, and 4 /spl mu/m thickness micromachined out of silicon and aligned to a counter electrode on glass with 4-/spl mu/m spacing in between. Measurements on realized devices show a 4.5 pF nominal capacitance. Static measurements indicate a sensitivity of 5 fF/V/sup 2/ and a voltage shift of 0.2 V. The nominal square relation is achieved within a 0.5% nonconformity error.
A novel array laterolog method (1997)

PreviousNext No AccessSEG Technical Program Expanded Abstracts 1997A novel array laterolog methodAuthors: Yong H. ChenWeng Cho ChewG. J. ZhangYong H. ChenCenter for Computational Electromagnetics, Department of Electrical and Computer Engineering, University of Illinois, Urbana, IL 61801, Weng Cho ChewCenter for Computational Electromagnetics, Department of Electrical and Computer Engineering, University of Illinois, Urbana, IL 61801, and G. J. ZhangDepartment of Petroleum Exploration, University of Petroleum at Dongying, Chinahttps://doi.org/10.1190/1.1885833 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Permalink: https://doi.org/10.1190/1.1885833FiguresReferencesRelatedDetails SEG Technical Program Expanded Abstracts 1997ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 1997 Pages: 2067 publication data© 1997 Copyright © 1997 Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished Online: 10 Feb 2005 CITATION INFORMATION Yong H. Chen, Weng Cho Chew, and G. J. Zhang, (1997), "A novel array laterolog method," SEG Technical Program Expanded Abstracts : 1973-1976. https://doi.org/10.1190/1.1885833 Plain-Language Summary PDF DownloadLoading ...
Practical conclusions from field trials of a superconducting cable (1983)

Field trials of a Fully Flexible Superconducting Cable (60 kV/1000 A, design Klaudy-Kabelmetal) including the necessary potheads were performed successfully in a real grid for the first time in the world during the years 1977-1980 at Arnstein (Austria). The cable met all electrotechnical and cryotechnical field and test conditions. Encouraged by this success and based on the experiences gained in Arnstein as well as on further theoretical and practical investigations, the authors propose a simplified version of the Fully Flexible Arnstein cable with an improved new superinsulation saving the nitrogen cooling stage. The proposed cable is based on the corrugated tube principle (Wellmantel-technique of Kabelmetal) and offers an economically competitive and technically superior construction compared to presently favoured watercooled cables in the power range of 1 GW or even lower. This power rating is of interest already today for the electricity supply in densely populated areas and industrial centers. Fully Flexible Superconducting Cables have the following essential advantages over other superconducting and conventional cables: 1. The cable can be fabricated in great lengths (a couple of hundred meters) at low cost with well proven methods and equipment. 2. They can be reeled, shipped, and laid like any conventional cable in individual sections. 3. They require no sophisticated expansion elements as the thermal length changes occuring during cooling cycles of the cables are compensated for thanks the elasticity of the corrugated tubes. 4. They guarantee high operational safety since only a small number of splices and joints are necessary for connecting the individual sections of the cables. 5. They offer a high lifetime compared to conventional cables. 6. They are especially suited for the transmission of base load power at power ratings down to 1 GW and at voltages of 100 - 140 kV. 7. Being superconducting cables, they offer the possibility of perfect electromagnetic shielding towards their environment. Shield currents cause practically no losses. 8. The cables require surprisingly small trench widths - an advantage which can not be achieved with any type of normal conducting cables. Consequently Fully Flexible Superconducting Cables of the corrugated tube design will be of importance in connection with electrical high power transmission in future.
Automatically reducing tree-structured test inputs (2017)

Reducing the test input given to a program while preserving some property of interest is important, e.g., to localize faults or to reduce test suites. The well-known delta debugging algorithm and its derivatives automate this task by repeatedly reducing a given input. Unfortunately, these approaches are limited to blindly removing parts of the input and cannot reduce the input by restructuring it. This paper presents the Generalized Tree Reduction (GTR) algorithm, an effective and efficient technique to reduce arbitrary test inputs that can be represented as a tree, such as program code, PDF files, and XML documents. The algorithm combines tree transformations with delta debugging and a greedy backtracking algorithm. To reduce the size of the considered search space, the approach automatically specializes the tree transformations applied by the algorithm based on examples of input trees. We evaluate GTR by reducing Python files that cause interpreter crashes, JavaScript files that cause browser inconsistencies, PDF documents with malicious content, and XML files used to tests an XML validator. The GTR algorithm reduces the trees of these files to 45.3%, 3.6%, 44.2%, and 1.3% of the original size, respectively, outperforming both delta debugging and another state-of-the-art algorithm.
Protein Nanopatterns for Improved Immunodetection Sensitivity (2008)

In this work, we clearly demonstrate the capability of protein nanopatterns of improving the quality factors of immunosensing devices, such as lowering of the limit of detection and increase of sensitivity. This beneficial effect is obtained by the formation on the sensor's surface of bioadhesive domains of nanometric dimensions in a nonadhesive matrix by means of colloidal lithography.
Monostable-Bistable Transition Logic Elements (MOBILEs) Based on Monolithic Integration of Resonant Tunneling Diodes and FETs (1995)

A MOBILE (monostable-bistable transition logic element) is a functional logic gate employing two negative differential resistance devices connected in-series. This logic gate offers the advantages of multiple inputs and multiple functions. In this paper, a novel approach to achieving MOBILE operation is demonstrated based on monolithic integration of resonant tunneling diodes (RTDs) and field-effect transistors (FETs). In our new integrated structure, an RTD and FETs (one or more) are connected in-parallel. This structure offers several advantages including separate optimization of the RTDs and FETs, and flexible circuit design abilities. For a single-input MOBILE gate, inverter operation is demonstrated as an evidence of monostable-to-bistable transition. For a two-input gate, both NAND and NOR operation is achieved with different control voltages, which implies the possibility of a variable-function logic gate.
Hydrogen bonding. Part 7. A scale of solute hydrogen-bond acidity based on log K values for complexation in tetrachloromethane (1989)

A scale of solute hydrogen-bond acidity has been constructed using equilibrium constants (as log K values) for complexation of series of acids (i) against a given base in dilute solution in tetrachloromethane, equation (A). Forty-five such equations have been solved to yield LB and DB, log Ki=LB log KAHI+DB(A) values characterising the base, and log KAH values that characterise the acid. In this analysis, use has been made of the novel observation that all the lines in equation (A) intersect at a given point where log K= log KAH=–1.1 with K on the molar scale. Some 190 log KAH values that constitute a reasonably general scale of solute hydrogen-bond acidity have been obtained. It is shown that there is no general connection between log KAH; and any proton-transfer quantities, although certain family dependences are obtained. A number of acid-base combinations are excluded from equation (A), and alternative log KAHE values have been determined for such cases. The general log KAH values may be transformed into α2H values suitable for use in multiple linear-regression analysis through the equation α2H=(log KAH+ 1.1)/4.636.