gebhart/patrepeval huggingface dataset:
Integration of inter-personal space and shared workspace (1992)

Article Integration of inter-personal space and shared workspace: ClearBoard design and experiments Share on Authors: Hiroshi Ishii View Profile , Minoru Kobayashi View Profile , Jonathan Grudin View Profile Authors Info & Claims CSCW '92: Proceedings of the 1992 ACM conference on Computer-supported cooperative workDecember 1992 Pages 33–42https://doi.org/10.1145/143457.143459Online:01 December 1992Publication History 92citation1,201DownloadsMetricsTotal Citations92Total Downloads1,201Last 12 Months10Last 6 weeks2 Get Citation AlertsNew Citation Alert added!This alert has been successfully added and will be sent to:You will be notified whenever a record that you have chosen has been cited.To manage your alert preferences, click on the button below.Manage my AlertsNew Citation Alert!Please log in to your account Save to BinderSave to BinderCreate a New BinderNameCancelCreateExport CitationPublisher SiteGet Access
Ultrapure water quality monitoring by a silicon-based potentiometric sensor (2000)

A solid state silicon-based potentiometric sensor and a resistivity sensor were employed to monitor the water quality from an ultra-pure water production unit. A minute ionic impurity increase (at the low ppt level), which was not detectable by the conventional water resistivity sensor, can be sensitively detected by the silicon-based sensor. This slight degradation of water purity, independently confirmed by inductively coupled plasma mass spectrometry and atomic force microscopy, was attributed to early boil-off from the saturated water purification cartridge. The silicon-based sensor can potentially function as an ultra-sensitive monitoring sensor in conjunction with the conventional resistivity sensor to ensure water purity at parts per trillion level.
A human protein related to yeast Cdc6p (1997)

The unstable proteins Cdc6p and cdc18+ are essential and rate limiting for the initiation of DNA replication in Saccharomyces cerevisiae and Schizosaccharomyces pombe, respectively, and also participate in checkpoint controls that ensure DNA replication is completed before mitosis is initiated. We have identified Xenopus and human proteins closely related to Cdc6p/cdc18. The human protein, p62(cdc6), is encoded on chromosome 17q21.3 and includes putative cyclin-dependent kinase phosphorylation sites, destruction boxes, a nucleotide binding/ATPase domain, and a potential leucine zipper. Expression of p62(cdc6) mRNA and protein is suppressed in human diploid fibroblasts made quiescent by serum starvation, and peaks as cells reenter the cell cycle and replicate DNA following serum stimulation. Conservation of structure among proteins involved in initiation suggests that fundamental features of replication complexes are maintained in all eukaryotes.
Hydrogen Peroxide Generation in a Model Paediatric Parenteral Amino Acid Solution (1993)

1. Parenteral amino acid solutions undergo photooxidation, which may be an important factor in total parenteral nutrition-associated hepatic dysfunction. Light-exposed parenteral solutions containing amino acids, in addition to vitamins and trace minerals, generate free radicals, which, in turn, may contribute to this type of injury. This study examined the characteristics of H2O2 production in a parenteral amino acid solution modelled on a commercially available paediatric parenteral amino acid solution. 2. The solution was exposed to light in the presence of riboflavin-5'-monophosphate (riboflavin), and peroxide formation in the presence and absence of catalase (H2O2 formation) was assayed using potassium iodide/molybdate. 3. Peak H2O2 production occurred at a light intensity of 8 microW cm-2 nm-1 in the 425-475 nm waveband and was linear to 2 h of light exposure. H2O2 production reached 500 mumol/l at 24 h. 4. H2O2 was directly related to a riboflavin concentration of up to 20 mumol/l and was maximal at 30 mumol/l. 5. H2O2 production was greatest in the amino acid/riboflavin solution at a pH of between 5 and 6. 6. Under the conditions of light exposure intensity, light exposure time, riboflavin concentration and pH found during the administration of parenteral nutrition in neonatal intensive care units, net H2O2 production occurs in solutions modelled on a paediatric parenteral amino acid preparation.
Holographic interferometric microscopy systems for the application on biological samples (2004)

Holographic interferometric metrology allows a fast, non destructive and quantitative high resolution full field detection of optical path length changes. Furthermore, by utilization of modern CCD sensor technology and digital image process-ing algorithms an on-line application of these methods even on biological specimens is possible. In combination with a microscopic resolution this offers new possibilities for the detection of variations of shape, micro movements or refractive index changes e. g. for the marker free analysis of cellular samples. Three holographic interferometric systems for microscopy applications based on digital holography, (speckle) interferometry and photorefractive crystals as holographic recording medium are introduced. Results of investigations on test charts and biological samples to characterize and optimize the lateral resolution as well as the resolution of the detected phase difference changes are presented and discussed. Finally, the applicability of the developed measurement techniques on living cells is demonstrated.
A method of measuring oil consumption by labelling with radioactive bromine (2000)

Abstract A method of determining the oil consumption rate of combustion engines is presented. It is based on labelling the individual oil fractions of engine oil with radioactive bromine isotope 82 Br and on the quantitative absorption of radioactive bromine compounds in the exhaust gas in an aqueous solution of nitric acid and silver nitrate. The advantages of this method are that the oil that is consumed in the exhaust gas can be directly measured, without the fluctuating amounts of oil in the sump influencing the result, and the behaviour of the individual components of the oil in the consumption process can be determined. The test is quick, only twenty minutes being required to detect oil consumption at one operating point; and with a single labelling, the oil consumption at a great number of working engine points can be measured 82 Br has a short half‐life of only 36 h, so that compliance with radiation protection measures is inexpensive and investigations can be carried out using a conventional testing device. As part of the research project, a study was made of the influence of different base oil types, with and without polymer additives, on consumption. Results showed that Noack evaporation loss correlated with oil consumption only with boiling fractions of exactly the same base oil, and not with different, in particular synthetic, base oils; that polymer additives (VI improvers) significantly reduced the rate of oil consumption; and that the polymer additive and the type of base oil both had more influence on oil consumption than viscosity.
Monitoring issues of chromatic and polarization-mode dispersion in optical networks (2003)

We will highlight four projects related, to monitoring in high performance networks. 1. Chromatic dispersion monitor using vestigial-sideband optical filtering. 2. Chromatic dispersion monitoring using clock regeneration and fading. 3. Wide-dynamic-range differential group delay monitoring by partial optical signal spectrum degree of polarisation measurement. 4. Polarisation mode dispersion monitoring in WDM systems for NRZ data using a chromatic-dispersion-regenerated clock.
Design and Implementation of a Real-time Traffic Recognition Method based on Video (2014)

As the increasing of vehicle, the problem of traffic jam is more prominent and the real-time traffic recognition systems come into being. Combine with the characteristic of vehicle distribution in congested roads, a real-time traffic recognition method was designed and implemented by visual space transformation and gridding. This method can recognize different traffic situations effectively and has a good accuracy. It can meet the real-time demands.
Cytogenetics: an overview (2017)

Cytogenetics is the study of chromosome morphology, structure, pathology, function, and behavior. This overview chapter discusses the general flow of activities within the cytogenetics laboratory, as well as the theories behind their processes, i.e., chromosome harvesting, slide staining, chromosome analysis, and case reporting, as it applies to all specimens. The reader will learn about the history of cytogenetics, the flow of work, and the principles behind the methods used in a clinical cytogenetics laboratory. The author also covers cell culture, chromosome banding, microscopy, karyotyping, chromosome abnormalities, and sources of error. The chapter is written as an introduction to these topics; each topic will again be covered, but in more depth, in later chapters. Of special emphasis in this chapter, however, is the authors’ discussion on the art of slidemaking, a skill that every wet-lab technologist must master, and a task that crosses several specimen boundaries. Protocols are included with this chapter.
Metal Corrosion Rate Determination of Different Solutions and Reinforced Concrete Specimens by Means of a Noncontacting Corrosion Method (2010)

All the current techniques used to measure the metallic corrosion require contact with the metal. Particularly, in the case of reinforcement corrosion, this signifies the need to reach the bar that is embedded in the concrete, which consequently may result in the disruption of the integrity of the real structures. This paper studies the limits of application of a new method for polarizing the reinforcement or any metal in an electrolyte, without the need of direct contact. The polarization is obtained through the induction of current from an external electrical field. The current runs through the electrolyte and the metal in parallel, depending on the electrode arrangement. The resulting polarization resistance calculated is termed as inductive, Rp = Rpi, as reported in a previous paper. The inductive Rp is calculated by the model of resistances in parallel, which requires a separate measurement of the electrolyte ohmic resistance. In this study, solutions with several resistivities and concrete specimens with and without chlorides have been tested. Results indicate that electrolytes of low resistivity mask the measurement, and consequently, Rpi could not be calculated. In electrolytes with high resistivity, such as concrete, the feasibility is found to depend on the relative values of Re and Rpi.
Analogue 16-QAM demodulator (2004)

The proposed circuit demodulates 16-QAM I/Q signals over a Gaussian channel into log-likelihood ratios (LLRs). The input signals are converted using differential pairs into currents which are suitably added/subtracted to produce the values of the LLRs. These data can then be used as input by soft-input/soft-output channel decoders, either digital or analogue, such as turbo decoders. The circuit is designed for a 0.25 µm BiCMOS process. Transistor level simulations validate the correct functioning of the circuit.
Nanohybrids from Liquid Crystalline Extended Amphiphilic Dendrimers (2004)

A novel extended amphiphilic dendrimer with linear poly(ethylene oxide) (PEO) attached to a PEO-like dendritic core as hydrophilic fraction and eight docosyl chain branches as hydrophobic fraction has been prepared for the use as structure-directing agent for silica-type materials. The extended dendrimer exhibits a hexagonal columnar liquid crystalline phase in the melt. Organically modified inorganic precursors and the extended dendrimer co-assemble into nanostructured hybrids. Hybrids with 0.44 weight fraction (fw) of aluminosilicate show a lamellar morphology, while hybrids with 0.21 fw exhibit a cylindrical structure. Nanostructures were characterized by a combination of small-angle X-ray scattering (SAXS), transmission electron microscopy (TEM), and atomic force microscopy (AFM). The results suggest that dendrimer-based amphiphiles may provide an exciting platform for the formation of multifunctional organic-inorganic nanostructured hybrid materials with unique structural characteristics.
Hybrid analog-digital transmit beamforming for spectrum sharing satellite-terrestrial systems (2016)

This paper deals with the problem of hybrid analog-digital transmit beamforming under spectrum sharing constraints. Hybrid multiantenna architectures are ideal for high throughput wireless links, where full-digital solutions are extremely expensive due to their the high number of radiofrequency chains and full-analog architectures require complex and lossy beamforming networks. In contrast to the recent works regarding mm-wave precoding, we consider the case where the transmitter is required to limit its array gain to certain angles-of-departure where non-intended receivers are located. This is of great importance in the 18 GHz band where wireless backhaul systems can eventually share the spectrum with satellite systems, leading to a substantial reduction of the spectrum license cost. We propose a general optimization framework based on an alternate analog-digital optimization that can consider any arbitrary sub-array scheme (i.e. interleaved, localized, etc.). At each stage of the analog-digital optimization a quadratically-constraint-quadratic-program needs to be solved and it requires the use of novel non-smooth methods. Numerical results show the performance of our method for different scenarios and sub-array schemes.
Expression and Supramolecular Assembly of Recombinant α1(VIII) and α2(VIII) Collagen Homotrimers (2004)

Collagen VIII is an extracellular matrix macromolecule comprising two polypeptide chains, alpha1(VIII) and alpha2(VIII), that can form homotrimers in vitro and in vivo. Here, recombinant collagen VIII was expressed to study its supramolecular assembly following secretion. Cells transfected with alpha1(VIII) or alpha2(VIII) assembled and secreted homotrimers that were stable in denaturing conditions and had a molecular mass of approximately 180 kDa on SDS-PAGE gels. Co-transfection with prolyl 4-hydroxylase generated homotrimers with stable pepsin-resistant triple-helical domains. Size fractionation of native recombinant collagen VIII molecules expressed with or without prolyl 4-hydroxylase identified urea-sensitive high molecular mass assemblies eluting in the void volume of a Superose 6HR 10/30 column and urea-resistant assemblies of approximately 700 kDa, all of which were composed of homotrimers. Immunofluorescence analysis highlighted the extracellular deposition of recombinant alpha1(VIII)(3), alpha2(VIII)(3), and co-expressed alpha1(VIII)(3)/alpha2(VIII)(3). Microscopy analysis of recombinant collagen VIII identified rod-like molecules of 134 nm in length that assembled into angular arrays with branching angles of approximately 114 degrees and extensive networks. Based on these data, we propose a model of collagen VIII assembly in which four homotrimers form a tetrahedron stabilized by central interacting C-terminal NC1 trimers. Tetrahedrons may then act as building blocks of three-dimensional hexagonal lattices generated by secondary interactions involving terminal and helical sequences.
Long-Term Safety of Single and Multiple Infrared Transcranial Laser Treatments in Sprague–Dawley Rats (2010)

Single and multiple applications of transcranial laser therapy with 808-nm CW laser light at a nominal power density of 10 mW/cm(2) at the surface of the cerebral cortex appears to be safe in Sprague-Dawley rats 1 year after treatment.
Modeling of T cell contact-dependent B cell activation. IL-4 and antigen receptor ligation primes quiescent B cells to mobilize calcium in response to Ia cross-linking (1991)

The generation of antibody secretory cells from resting B lymphocytes after immunization with most protein Ag requires B cell signaling by Ag, direct Th cell contact and lymphokines. Previous studies suggest that cell contact-mediated signals may be transduced by Ia after Ia binding by alpha beta TCR and/or CD4. Seemingly inconsistent with this concept are findings that cross-linking of Ia molecules on quiescent B cells leads to cAMP generation that is antagonistic for B cell mitogenesis. Here we show that ligand binding to IL-4 and Ag receptors on quiescent B cells induce transition of these cells into a competent state in which Ia molecules transduce signals via a distinct mechanism. This mechanism involves the tyrosine kinase-dependent activation of phospholipase C leading to Ca2+ mobilization from intracellular stores and the extracellular space. This competence, which is seen within 4 h of priming, is not simply a function of increased Ia expression by the B cell because the response can be induced by cross-linking of less than 5% of cell surface Ia molecules on primed cells. Finally, cross-linking of Ia molecules leads to more than fivefold greater increase in [Ca2+]i than is induced by membrane Ig ligation. These findings are consistent with alpha beta TCR/CD4 delivery via Ia of proliferative signals mediated by tyrosine kinase activation, phosphoinositide hydrolysis and Ca2+ mobilization.
Performance of four carbon dioxide absorbents in experimental and clinical settings (2009)

To evaluate the performance of four kinds of carbon dioxide (CO(2)) absorbents (Medisorb GE Healthcare, Amsorb Plus Armstrong Medical, YabashiLime Yabashi Industries, and Sodasorb LF Grace Performance Chemicals), we measured their dust production, acceptability of colour indicator, and CO(2) absorption capacity in in vitro experimental settings and the concentration of compound A in an inspired anaesthetic circuit during in vivo clinical practice. In vitro, the order of the dust amount was Sodasorb LF > Medisorb > Amsorb Plus = YabashiLime both before and after shaking. The order of the color acceptability was similar: Sodasorb LF > Amsorb Plus = Medisorb > YabashiLime both initially and 16 h after CO(2) exhaustion. During exposure to 200 ml.min(-1) CO(2) in vitro, the period until 1 kg of fresh soda lime allowed inspired CO(2) to increase to 0.7 kPa (as a mark of utilisation of the absorbent) was longer with Medisorb (1978 min) than with the other absorbents (1270-1375 min). In vivo, compound A (1.0% inspired sevoflurane) was detected only when using Medisorb. While Medisorb has the best ability to absorb CO(2), it alone produces compound A.
Polymer Surface Engineering for Efficient Printing of Highly Conductive Metal Nanoparticle Inks (2015)

An approach to polymer surface modification using self-assembled layers (SALs) of functional alkoxysilanes has been developed in order to improve the printability of silver nanoparticle inks and enhance adhesion between the metal conducting layer and the flexible polymer substrate. The SALs have been fully characterized by AFM, XPS, and WCA, and the resulting printability, adhesion, and electrical conductivity of the screen-printed metal contacts have been estimated by cross-cut tape test and 4-point probe measurements. It was shown that (3-mercaptopropyl)trimethoxysilane SALs enable significant adhesion improvements for both aqueous- and organic-based silver inks, approaching nearly 100% for PEN and PDMS substrates while exhibiting relatively low sheet resistance up to 0.1 Ω/sq. It was demonstrated that SALs containing functional -SH or -NH2 end groups offer the opportunity to increase the affinity of the polymer substrates to silver inks and thus to achieve efficient patterning of highly conductive structures on flexible and stretchable substrates.
Segment gating for static energy reduction in Networks-on-Chip (2009)

Chip multiprocessors (CMPs) have emerged as a primary vehicle for overcoming the limitations of uniprocessor scaling, with power constraints now representing a key factor of CMP design. Recent studies have shown that the on-chip interconnection network (NOC) can consume as much as 36% of overall chip power. To date, researchers have employed several techniques to reduce power consumption in the network, including the use of on/off links by means of power gating. However, many of these techniques target dynamic power, and those that consider static power focus exclusively on flit buffers. In this paper, we aim to reduce static power consumption through a comprehensive approach that targets buffers, switches, arbitration units, and links. We establish an optimal power-down scheme which we use as an upper bound to evaluate several static policies on synthetic traffic patterns. We also evaluate dynamic utilization-aware power-down policies using traces from the PARSEC benchmark suite. We show that both static and dynamic policies can greatly reduce static energy at low injection rates with only minimal increases in dynamic energy and latency.
Effect of Impeller Speed and pH on the Production of Poly(3-hydroxybutyrate) Using Bacillus cereus SPV (2009)

P(3HB), is one of the most well studied polyhydroxyalkanoates. It is biodegradable, biocompatible, exhibits thermoplastic properties and can be produced from renewable carbon sources. The commercial exploitation of P(3HB) has been mainly held back by its high production costs. Hence, a lot of research is required to optimize P(3HB) fermentation conditions. In this study we have focused on the effects of impeller speed and pH on P(3HB) production in Bacillus cereus SPV. Four different impeller speeds, 50, 125, 250, and 500 rpm, were used. The highest amount of P(3HB) accumulation was achieved using 125 rpm impeller speed (34% dcw) and this was attributed to optimal cell growth rate. Also, pH-stat fermentations were carried out at pH 3.0, 6.8, and 10. This study confirmed that lack of P(3HB) degradation during unbuffered Bacillus fermentations is due to the low pH conditions. This observation is crucial for the industrial exploitation of the genus Bacillus for the production of P(3HB).
Immunohistochemical Analysis of Cytokeratin 7 Expression in Resting and Proliferating Biliary Structures of Rat Liver * (2005)

Cytokeratins are the largest subfamily of intermediate filament proteins and include more than 20 different gene products, which are expressed in an epithelial tissue-specific manner. We studied by immunohistochemistry and confocal microscopy the distribution of cytokeratin subtypes in the biliary system of adult rat liver. A cytokeratin (CK)19+/7- cholangiocyte population was observed in the smaller branches of the biliary tree including the canals of Hering. They proliferated after 2-acetaminofluorene (AAF) administration, although later the typical oval cells expressed CK7. This observation suggests that cholangiocytes with this cytokeratin phenotype may harbor adult hepatic stem cells. The CK19+/7- cholangiocytes were not present in the rat liver at birth, but developed postnatally. Similar cell populations were not observed in human livers. In conclusion, we propose that the CK19+/7- phenotype may be characteristic for adult hepatic stem cells in rat liver and that these cells are generated de novo after birth.