gebhart/patrepeval huggingface dataset:
Unusual paramagnetic phenomena in granular high-temperature superconductors—A consequence of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>d</mml:mi></mml:math>- wave pairing? (1995)

This colloquium reviews some unusual paramagnetic phenomena in granular high-temperature superconductors. These are consistently explained by assuming that there is frustration in the coupling patterns between the neighboring grains. Such frustration effects occur in a natural way in a multiply connected superconductor with Josephson junctions if the order parameter has unconventional symmetry due to Cooper pairing in a higher angular momentum channel, e.g., $d$- wave pairing. A simple model is introduced to describe the magnetic properties of a frustrated granular superconductor. Large orbital magnetic moments are spontaneously created, leading to superparamagnetic behavior. These results suggest that the unusual paramagnetic phenomena are a consequence of unconventional symmetry of the pairing state in the high-temperature superconductors.
Designing for context (2000)

Freeing users from the desktop is now a practical reality in many environments. The implications for mobility are both far-reaching and under-realized in many of the current scenarios we have seen. Our work has focused on the integration of user input into the iterative design process used to develop a contextually aware application for use in an educational environment. We discuss the design and development of Semaphore, a contextually aware tool for use in wireless networked environments, and the unique opportunities an iterative design process presents for our work.
[Dynamics of the dendrite and transcallosum potentials in the cerebral cortex in overheating]. (1976)

Experiments were conducted on awake rabbits placed in a thermochamber at the temperature of 45 degrees C. The dendrite and the transcallosum potentials were examined in dynamics of the hyperthermia and after the restoration of the thermal homeostasis. The influence of high temperature was accompanied by an expressed inhibition of the amplitude of the dendrite potential, although to a lesser degree than of the transcallosum response. The data obtained could testify to a direct inhibitory thermal effect on the neuron elements of various layers of the cortex. Restoration of the cortical neuron function after the high degree hyperthermia occurred twenty-four hours after the body normothermia was reached.
Reconstruction and simplification of surfaces from contours (2003)

In this paper we consider the problem of reconstructing triangular surfaces from given contours. An algorithm solving this problem has to decide which contours of two successive slices should be connected by the surface (branching problem), and, given that, which vertices of the assigned contours should be connected for the triangular mesh (correspondence problem). We present a new approach that solves both tasks in an elegant way. The main idea is to employ discrete distance fields enhanced with correspondence information. This allows us not only to connect vertices from successive slices in a reasonable way but also to solve the branching problem by creating intermediate contours where adjacent contours differ too much. Last but not least we show how the 2D-distance fields used in the reconstruction step can be converted to a 3D-distance field that can be advantageously exploited for distance calculations during a subsequent simplification step.
Visualization of dominant region in team games and its application to teamwork analysis (2002)

The authors present a method for visualization of an invisible feature in human group motion. This feature called "dominant region" is a kind of dynamic sphere of influence. A dominant region is defined as a region in where the person can arrive earlier than any other persons and can be formulated by replacing the distance function in the Voronoi region with a time function. As an application of the dominant region, a motion analysis system of team ball games was developed. In this system, the dominant region is used for quantitative evaluation of basic teamwork. From the experiments using actual soccer game scenes, it was shown that inferior or superior areas for each player and each team in the game can be observed visually and that some basic factor for teamwork can be evaluated quantitatively by using the dominant region. These evaluation results almost correspond with those by some professionals.
Partial amino acid sequence of apolipoprotein(a) shows that it is homologous to plasminogen. (1987)

Apolipoprotein(a) [apo(a)] is a glycoprotein with Mr approximately equal to 280,000 that is disulfide linked to apolipoprotein B in lipoprotein(a) particles. Elevated plasma levels of lipoprotein(a) are correlated with atherosclerosis. Partial amino acid sequence of apo(a) shows that it has striking homology to plasminogen. Plasminogen is a plasma serine protease zymogen that consists of five homologous and tandemly repeated domains called kringles and a trypsin-like protease domain. The amino-terminal sequence obtained for apo(a) is homologous to the beginning of kringle 4 but not the amino terminus of plasminogen. Apo(a) was subjected to limited proteolysis by trypsin or V8 protease, and fragments generated were isolated and sequenced. Sequences obtained from several of these fragments are highly (77-100%) homologous to plasminogen residues 391-421, which reside within kringle 4. Analysis of these internal apo(a) sequences revealed that apo(a) may contain at least two kringle 4-like domains. A sequence obtained from another tryptic fragment also shows homology to the end of kringle 4 and the beginning of kringle 5. Sequence data obtained from two tryptic fragments show homology with the protease domain of plasminogen. One of these sequences is homologous to the sequences surrounding the activation site of plasminogen. Plasminogen is activated by the cleavage of a specific arginine residue by urokinase and tissue plasminogen activator; however, the corresponding site in apo(a) is a serine that would not be cleaved by tissue plasminogen activator or urokinase. Using a plasmin-specific assay, no proteolytic activity could be demonstrated for lipoprotein(a) particles. These results suggest that apo(a) contains kringle-like domains and an inactive protease domain.
A low-cost apparatus for the production of surface wave patterns in a vertically oscillating fluid (1998)

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 Tim Pritchett, Jin K. Kim; A low-cost apparatus for the production of surface wave patterns in a vertically oscillating fluid. Am. J. Phys. 1 September 1998; 66 (9): 830–833. https://doi.org/10.1119/1.18967 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 ContentAmerican Association of Physics TeachersAmerican Journal of Physics Search Advanced Search |Citation Search
5′ Regions of HIV-1 RNAs Are Not Sufficient for Encapsidation: Implications for the HIV-1 Packaging Signal (1995)

The location and nature of the HIV-1 packaging signal are largely unknown, despite several genetic and biochemical mutational analyses. In this report we present our attempts to define a minimal HIV-1 packaging signal through the generation of test RNAs containing small blocks of HIV-1 sequences. We constructed RNAs differing in the position and identity of the HIV-1 sequence and the segments of heterologous sequences. However, none of the vectors were efficiently, encapsidated by wild-type HIV-1 virions. These results contrast those of Moloney murine leukemia virus and Rous sarcoma virus, where small viral segments mediate the efficient encapsidation of heterologous RNAs. The results suggest that the HIV-1 packaging signal may be extremely dispersed or heavily context-dependent.
Elaboration, Characterisation, and Magnetic Properties of Cobalt Fine Particles (1998)

Nanoparticles of cobalt have been prepared by an original method using the decomposition under hydrogen of an organometallic precursor in the presence of a stabilizing polymer. Two colloids (C1, C2) have been obtained by changing the organometallic concentration in the polymer. Observation by HRTEM and WAXS showed that Co particles have diameter around 1.5 nm (C1) and 2 nm (C2). They are well isolated and regularly scattered in the polymer, with an original bcc structure. These particles show a superparamagnetic behavior above the blocking temperature (T B ). Analysis of the magnetization curves above T B confirms the very weak volume dispersion of the particles centered around 150±10 atoms (C1) and 310±20 atoms (C2), and their homogeneous distribution in the polymer observed by HRTEM. Enhanced effective anisotropy energy with uniaxial symmetry has been deduced from magnetization and ferromagnetic resonance measurements in the FIR range (100-700 Ghz). Magnetization at 5 K seems to saturate in fields up to 5 T leading to an enhanced mean magnetic moment per atom, = 1.94±0.05 μ B for the smallest particles. These values still increase in field up to 35T reaching = 2.1±0.1 μ B (C1), exhibiting a canted spin structure due to high surface anisotropy. This set of data allows us to conclude that the enhanced magnetization, its increase with applied magnetic field, and the enhanced effective magnetic anisotropy, these effects being more significant with decreasing size, are associated to the large influence of the surface atoms.
Semantic Interoperability Architecture for Smart Spaces (2018)

The advancements in the smart space research bring us closer and closer to a future, in which the living standards of people are greatly enhanced. Smart spaces are composed of heterogeneous networks of embedded devices that communicate, perform computations and actuate. From a system point of view, a smart space is a specific type of ubiquitous system. Like any ubiquitous system, a smart space is usually heterogeneous, i.e. it is made up of embedded devices with various hardware, software and communication platforms. There is need for information exchange and interoperability between these embedded devices and their services. However, embedded devices in a smart space vary in terms of their sensing, actuation and control capabilities, as well as their resources of processing, storage, and networking. For an interoperability solution, this paper proposes a semantic interoperability architecture for smart spaces. The description details of an ontology model and interoperability interactions between smart objects are explained. An example implementation of a heterogeneous smart lighting system as a smart space using the proposed semantic interoperability architecture is discussed.
Effects of Lubricants and Their Treatments on Tribological Characteristics of Thin-Film Disks (2008)

We used a transparent pin-on-disk seek wear test to evaluate the effectiveness at reducing disk drive head wear of several perfluoropolyether lubricants with different end-groups, under various heat and UV irradiation conditions. The extent of Pin wear decreased as bonding ratio increased, with a wear minimum between 30 and 40% bonding ratio on UV irradiated Fomblin Z-dol or Phospharol A20H lubricants. A further wear minimum occurred at higher bonding ratios on both lubricants. Pin wear amounts on disks with heat treated lubricants were different from those on disks with UV irradiated lubricants. Disk failure occurred on disks with UV irradiated Fombrin Z-dol lubricant of high bonding ratio. Sliding conditions during wear tests were also recorded and investigated, showing changes in the lubricant picked-up on pin surfaces - at low bonding ratio disks, this was liquid-like whereas at medium to high bonding ratio disks it became gel-like. On UV irradiated high bonding ratio disks, black powdery debris were found. The mimima in wear found on UV irradiated Z-dol and A-20H lubricated disk seemed to be affected by the amount of debris under the pins. Changes in lubricant rheological properties by UV irradiation or heat treatment should be studied further.
Peptide-Targeted Diagnostics and Radiotherapeutics (2009)

Radiotherapeutic drugs and medical imaging agents, although used for different purposes, both benefit from precise targeting. When systemically administered, either would be most useful if designed to find and bind only a tumor, single type of cell, or unique molecular assembly thereon. In this Account, we examine the use of small peptides, natural and synthetic, to create biochemically specific molecular imaging agents and radiotherapeutic pharmaceuticals, discussing three distinct examples. In one project, a small natural peptide known to target members of the bombesin family of receptors was chemically attached to a strong, versatile metal chelator, DO3A, through a series of small-molecule linkers. The linkers powerfully affected not only binding strength for the bombesin receptors, tissue distribution, and tumor uptake in vivo but also receptor subtype specificity. When the assembly is combined with an active metal ion for human trials, the versatility of the DO3A (dodecanetriacetate) chelate affords choices in selecting the metal ion for different purposes: lutetium for a combination radiotherapeutic and diagnostic agent, (177)Lu-AMBA, and gallium for a positron emission tomography (PET) imaging agent, (68)Ga-AMBA. We also created small (approximately 5-kDa) bivalent peptides, each composed of different chemically linked peptides derived from phage display. The monomer peptides bound to the same target protein, VEGF-R2, a primary target of vascular endothelial growth factor (VEGF), the angiogenesis-stimulating protein. Several families of the monomer peptides did not compete with one another for the binding site on VEGF-R2. Their combination into fully synthetic hetero-bivalent molecules yielded subnanomolar K(d) values and greater than 100-fold improvements over homo-bivalent molecules. Biological activity was evident in the hetero-bivalents, whereas none or very little existed in homo-bivalents, monomers, and monomer mixtures. In ultrasound imaging, tiny bubbles (2 microm in diameter) filled with inert gas can be used as effective contrast agents. By coating the shell of such bubbles with the peptide TKPPR (a tuftsin antagonist), we created contrast agents that bound unexpectedly to cultured endothelial cells expressing angiogenesis targets; the binding was attributable to a previously unnoticed and powerful multivalency effect. TKPPR binds specifically to neuropilin-1 (NP-1), a VEGF co-receptor, but only when multimerized is it avid. Tuftsin, a small peptide derived from immunoglobulin G (IgG) that binds to macrophages during inflammation, has been studied for over 30 years; the receptor has never been cloned. Our results led to new conclusions about tuftsin, NP-1, and the purpose, heretofore unknown, of exon 8 in VEGF, which appears to be involved in NP-1 binding. Our disparate projects demonstrate that small-peptide targeted molecules can be very versatile in drug discovery in combination with classical medicinal chemistry. In particular, multivalent interactions can lead to unpredictable and useful biochemical information, as well as new drug candidates.
GaN nanowire ultraviolet photodetector with a graphene transparent contact (2013)

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 A. V. Babichev, H. Zhang, P. Lavenus, F. H. Julien, A. Yu. Egorov, Y. T. Lin, L. W. Tu, M. Tchernycheva; GaN nanowire ultraviolet photodetector with a graphene transparent contact. Appl. Phys. Lett. 11 November 2013; 103 (20): 201103. https://doi.org/10.1063/1.4829756 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 ContentAIP Publishing PortfolioApplied Physics Letters Search Advanced Search |Citation Search
A spatiotemporal most-apparent-distortion model for video quality assessment (2011)

This paper presents an algorithm for video quality assessment, spatiotemporal MAD (ST-MAD), which extends our previous image-based algorithm (MAD [1]) to take into account visual perception of motion artifacts. ST-MAD employs spatiotemporal “images” (STS images [2]) created by taking time-based slices of the original and distorted videos. Motion artifacts manifest in the STS images as spatial artifacts, which allows one to quantify motion-based distortion by using classical image-quality assessment techniques. ST-MAD estimates motion-based distortion by applying MAD's appearance-based model to compare the distorted video's STS images to the original video's STS images. This comparison is further adjusted by using optical-flow-derived weights designed to give greater precedence to fast-moving regions located toward the center of the video. Testing on the LIVE video database demonstrates that ST-MAD performs well in predicting video quality.
Detection and counting of specific cell populations by means of magnetic markers linked to monoclonal antibodies (1995)

We report on experiments aimed at the assessment of a new method for cell marking. This method combines superparamagnetic particles, commonly used for cell separation, linked to monoclonal antibodies, and biomagnetic instrumentation featuring an extremely high magnetic field sensitivity. The final goal of the method is to locate and estimate specific cell populations in the human body. In this experiment, quantitative features of the method are evaluated in vitro with lymphocytes and carcinoma cells. Comparison between estimation and direct counting of cells is quite satisfactory and motivates further development of the technique.
FIEEV: A co-simulation framework for Fault Injection in electrical vehicles (2012)

This paper presents FIEEV - Fault Injection Environment for Electric Vehicles, a Matlab/Simulink-based simulator environment for evaluating the fault impacts on vehicle stability in electrical vehicles. FIEEV makes it possible to simulate the temporal behavior of the faults and to study its effects on loss of vehicle's performance. Simulation results are presented to prove the validity of the presented framework.
Exposure-Related Health Effects of Silver and Silver Compounds: A Review (2005)

A critical review of studies examining exposures to the various forms of silver was conducted to determine if some silver species are more toxic than others. The impetus behind conducting this review is that several occupational exposure limits and guidelines exist for silver, but the values for each depend on the form of silver as well as the individual agency making the recommendations. For instance, the American Conference of Governmental Industrial Hygienists has established separate threshold limit values for metallic silver (0.1 mg/m3) and soluble compounds of silver (0.01 mg/m3). On the other hand, the permissible exposure limit (PEL) recommended by the Occupational Safety and Health Administration and the Mine Safety and Health Administration and the recommended exposure limit set by the National Institute for Occupational Safety and Health is 0.01 mg/m3 for all forms of silver. The adverse effects of chronic exposure to silver are a permanent bluish-gray discoloration of the skin (argyria) or eyes (argyrosis). Most studies discuss cases of argyria and argyrosis that have resulted primarily from exposure to the soluble forms of silver. Besides argyria and argyrosis, exposure to soluble silver compounds may produce other toxic effects, including liver and kidney damage, irritation of the eyes, skin, respiratory, and intestinal tract, and changes in blood cells. Metallic silver appears to pose minimal risk to health. The current occupational exposure limits do not reflect the apparent difference in toxicities between soluble and metallic silver; thus, many researchers have recommended that separate PELs be established.
Tobacco and Parsley 4-Coumarate:Coenzyme A Ligase Genes Are Temporally and Spatially Regulated in a Cell Type-Specific Manner during Tobacco Flower Development (1993)

The enzyme 4-coumarate:coenzyme A ligase (4CL) plays a key role in phenylpropanoid metabolism by supplying the precursors (coenzyme A esters of cinnamic acid derivatives) used for the biosynthesis of diverse natural products, many of which play functional roles in floral organs. In this study, we used in situ hybridization and histochemical localization of [beta]-glucuronidase (GUS) activity to define in detail the temporal and spatial patterns of 4CL-1 expression during tobacco flower development. Sectioned flowers from tobacco plants transgenic for a complete copy of the parsley (Petroselinum crispum) 4CL-1 gene were hybridized to probes that distinguished between 4CL-1 transcripts and endogenous tobacco 4CL transcripts. Both probes hybridized with similar cell type-specific patterns to carpels, anthers, petals, and sepals, and the sites of hybridization varied during flower development. The sites of hybridization generally coincided temporally and spatially with sites of 4CL-GUS expression, suggesting that most of the expression patterns are regulated by 4CL-1 promoter sequences, but lack of correlation between sites of 4CL mRNA accumulation and GUS activity in portions of the petal suggest that downstream sequences may mediate some aspects of developmentally regulated 4CL-1 expression. These results indicate that the introduced 4CL-1 gene correctly responds to endogenous tobacco developmental signals and demonstrate complex temporal and spatial patterns of expression during floral organ differentiation.
Zur Kenntnis der Chlorierung von Aluminiumoxyd mit Chlor und Kohlenoxyd (1932)

Abstract Die Chlorierung von γ‐Tonerde mit Kohlenoxyd und Chlor verläuft oberhalb von ca. 800° proportional mit der Zeit und verlangsamt sich nur in dem Masse, wie die Reaktionsmasse aufgebraucht wird. Je tiefer die Temperatur der Chlorierung gewählt wird, desto deutlicher verläuft sie mit autokatalytischer Beschleunigung. Als Ursache hierfür könnte die Entstehung einer minimalen Schicht von aktiver Kohle in Betracht kommen, die sich durch Zersetzung von Kohlenoxyd auf der Tonerde bildet. Der zeitliche Anstieg der Chlorierungsgeschwindigkeit würde dann durch das Anwachsen der reaktionsfähigen Grenzschicht: Tonerde/Kohle verursacht.
Comments on and Updating of the Paper “Controlled Radical Polymerization of Methyl Methacrylate Mediated by 4-Methoxypyridine-<i>N</i>-oxide” (2001)

peer reviewed
Corrigendum (1992)

H. Adolfsson, K. Wärnmark and C. Moberg, J. Chem. Soc., Chem. Commun., 1992, 1698 DOI: 10.1039/C39920001698
Retest Reliability and Construct Validity of Critical Flicker Fusion Frequency (1982)

With 48 male healthy volunteer subjects, repeated measurements within 8 hours were performed: critical flicker fusion (CFF), duration of afterimage, reaction times to light and tone, muscular microvibration (tremor test), correct answers in lines-labyrinth-test, EEG (O2-A2) and additionally Profile of Mood State (POMS, German adaptation). The primary aim of the study was the evaluation of retest reliability of CFF and its construct validity. Retest reliability of CFF was found moderately high (rtt = 0.69). Results of inter-test correlations show that CFF correlates significantly (ρ < 0.05) only with reaction times to light or tone, with the relative power of α-band and the dominant frequency of the whole EEG spectrum. The other correlations are low.