gebhart/patrepeval huggingface dataset:
Simultaneous calibration of a robot and a hand-mounted camera (1995)

A popular configuration widely used in a variety of robotic applications is to mount a camera on the robot manipulator hand. Before performing a measurement task using such a system, both the camera and the robot need to be calibrated. In this paper, a procedure is developed for simultaneous calibration of a robot and a monocular camera. Unlike conventional approaches based on first calibrating the camera and then calibrating the robot, the algorithm solves for the kinematic parameters of the robot and camera in one stage, thus eliminating error propagation and improving noise sensitivity. Only two parameters are added to a robot calibration model to represent camera geometry. With this addition, different levels of calibration can be done under a unified framework. An error model relating-image measurement residuals to kinematic parameter deviations is derived. Simulation and experimental studies have been conducted to assess the effectiveness of the proposed procedure.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
A New Synergetic Nanocomposite for Dye Degradation in Dark and Light (2016)

Abstract Environmental hazard caused due to the release of dyes in effluents is a concern in many countries. Among the various methods to combat this problem, Advanced Oxidation Process, in which semiconductor photocatalysts are used, is considered the most effective one. These materials release Reactive Oxygen Species (ROS) such as hydroxyl radical and superoxide in suspension that degrade the dyes into non-toxic minerals. However, this process requires visible or UV light for activation. Hence, there is a need to develop materials that release ROS, both in the absence and in the presence of light, so that the efficiency of dye removal is enhanced. Towards this objective, we have designed and synthesized a new nanocomposite ZnO 2 /polypyrrole which releases ROS even in the dark. The ROS released in the dark and in light were estimated by standard methods. It is to be noted that ZnO 2 degrades the dye only under UV light but not in dark or in the presence of visible light. We propose the mechanism of dye degradation in dark and light. The synergically coupled nanocomposite of ZnO 2 /ppy is the first example that degrades dyes in the dark, through advanced oxidation process without employing additional reagents.
The self-reference effect in memory: A meta-analysis. (1997)

In this review, the authors examine the basis for the mnemonic superiority that results from relating material to the self. A meta-analysis confirms the expected self-reference effect (SRE) in memory, with self-referent encoding strategies yielding superior memory relative to both semantic and other-referent encoding strategies. Consistent with theory and research that suggest self-reference (SR) produces both organized and elaborate processing, the SRE was smaller (a) when SR is compared with other-reference (OR) rather than semantic encoding and (b) when the comparison tasks promote both organization and elaboration. Thus, the SRE appears to result primarily because the self is a well-developed and often-used construct that promotes elaboration and organization of encoded information. The authors discuss the implications of these and other findings for theories of the SRE and for future research.
C12 hydroxyester ethoxylates as nonionic surfactants (2011)

Abstract A series of ethoxylates of 2,2,4-trimethyl-1,3-pentanediol mono-isobutyrate representing a synthetic C12 hydroxyester hydrophobe was obtained. The solubility parameters, surface tension and critical micelle concentrations for model solutions were investigated. The new surfactants were found to produce extremely low foam levels and a non-standard surface interfacial behavior was determined. It was observed that the ethoxylates of the C12 hydroxyester formed an oriented monolayer at the interface regardless of their average polyaddition degree. Such behavior is different from the surface activities of commonly known linear nonionic surfactants and it indicates self organization of the surfactants at the interface. This feature offers possibility for application of these surfactants in nanotechnology as well as in the conventional cleaning processes.
Delta-sigma modulator based mixed-signal BIST architecture for SoC (2003)

This paper proposes a mixed-signal Built-In Self-Test (BIST) architecture based on a second-order delta-sigma modulator. This modulator, which incorporates a design-for-testability (DfT) circuitry, is capable of testing/characterizing itself using digital stimulus. This characteristic is attractive for implementing the modulator as an on-chip analog signal analyzer. When applied for mixed-signal BIST, the modulator-based analog signal analyzer is first characterized using digital stimulus. Then the analyzer is utilized to characterize the stimulus generator in the BIST application. Some critical implementation issues of the BIST architecture are also discussed.
Density Separation of Imbibed and Primed Vegetable Seeds (1989)

Abstract The objective of this study was to determine the relationship between seed density and seed quality of vegetable seeds hydrated by imbibing or priming procedures. Species studied were: lettuce ( Lactuca sativa L.), tomato ( Lycopersicon esculentum Mill.), onion ( Allium cepa L.), cabbage ( Brassica oleracea var. capitata L.), and carrot ( Daucus carota L.). Seeds of each crop were soaked in either aerated distilled water at 25C (imbibed seeds) or polyethylene glycol (PEG) 8000 at 15C (primed seeds). After soaking, seeds were separated into density classes with a float-sink procedure using aqueous solutions of Maltrin 600 (Maltrin 500 for lettuce) with 0.02 g·cm −3 density increments. Significant ( P > 0.01) positive relationships were determined between seed density classes and germination percentages for lettuce, tomato, and onion seeds, whether separated after imbibition ( R 2 = 0.93, 0.83, and 0.66, respectively) or after priming ( R 2 = 0.95, 0.94, and 0.91, respectively). High-density classes of hydrated lettuce, tomato, and onion seeds in either the imbibed or primed treatment usually exhibited faster and more uniform rates of radicle emergence and, after 6 days, had longer hypocotyls (cotyledon for onions) than low-density classes. The significant quality differences exhibited among the density classes of lettuce, tomato, and onion seeds after priming will enable seedlots of these species to be upgraded by discarding the low-density, poor-quality seeds.
PLASTIC DEFORMATION AND FRACTURE PROCESSES IN METALLIC AND CERAMIC NANOMATERIALS WITH BIMODAL STRUCTURES (2007)

We briefly review the experimental data and theoretical concepts concerning plastic deformation and fracture processes in nanomaterials with bimodal structures. Special attention is paid to the peculiarities of plastic deformation of these materials that result in the combination of a high flow stress and strain to failure. Also, we suggest a theoretical model that describes the generation of nanoscale cracks at the boundaries between the large grains and nanoscale matrix. In the framework of the model, cracks are generated in the stress field of interfacial disclination dipoles formed at the interfaces between large grains and the nanocrystalline matrix during plastic deformation of nanomaterials with bimodal grain size distributions. The model predicts that the generation of cracks at such disclination dipoles is energetically favorable in metallic and ceramic nanomaterials with bimodal structures in wide ranges of their structural parameters.
Amitriptyline inhibits neurite outgrowth in chick cerebral neurons: A possible mechanism (1993)

Previous studies showed that amitriptyline (AMI), a tricyclic antidepressant, inhibited neurite outgrowth from chick embryonic cerebral explants and inhibited adenylyl cyclase activity in cerebral membrane preparations. In the present study, we have investigated the possibility that AMI may have additional effects on cellular metabolism and signal transduction that underlie AMI-mediated inhibition of neurite outgrowth. In vitro, AMI inhibited phospholipase C in a dose- and GTP-dependent manner in membranes from 8-day-old chick forebrain. Brain homogenates from 8-day-old chick embryos, treated in vivo for 6 days with AMI (20 micrograms/g/day), showed significant reductions in (1) phosphorylation of two polypeptides (49 and 105 kD), and (2) levels of three polypeptides (43, 53, and 92 kD). Western blots showed that the 43- and 53-kD polypeptides corresponded to actin and tubulin, respectively. Diolein and dilinolein, potent activators of protein kinase C, stimulated neurite outgrowth and reversed the inhibitory effects of AMI. Sphingosine, a protein kinase C inhibitor, significantly inhibited neurite outgrowth and eliminated the stimulatory effects of diolein and dilinolein on neurite outgrowth. These data suggest that AMI-mediated inhibition of neurite outgrowth involves multiple effects on cellular metabolism and signal transduction. A hypothesis consistent with our data is that AMI interferes in some manner with the action of G proteins in the signal transduction cascade.
Fabrication and Performance of Impregnated Ni Anodes of Solid Oxide Fuel Cells (2005)

Y 2 O 3 ‐stabilized ZrO 2 (YSZ) and Gd‐doped CeO 2 (GDC) oxide impregnated Ni was investigated and developed as anodes of solid oxide fuel cells. Performance of the Ni anodes for the H 2 oxidation reaction was substantially enhanced after the impregnation of submicrometer (100–300 nm) YSZ and GDC oxide particles. After impregnation of 1.7 mg/cm 2 GDC (∼8.5 vol% GDC), the electrode polarization resistance dropped to 0.71 Ω·cm 2 at 800°C, close to 0.24 Ω·cm 2 reported on good Ni (50 vol%)/YSZ (50 vol%) cermet anodes at the same temperature. The results demonstrated that ion or wet impregnation is an effective process to introduce ionic conducting and catalytic active nano‐sized YSZ and GDC phases into stable and porous Ni electronic network structure without the high temperature sintering process.
Promotion of Microtubule Assembly by Oligocations:  Cooperativity between Charged Groups (1998)

The rate and, to a lesser degree, the extent of microtubule assembly from rat brain tubulin is enhanced by oligocations such as polyamines, melittin, polybasic drugs, oligolysines, and oligoarginines. The effect is cooperative for degrees of polymerization up to seven for oligolysines and up to five for oligoarginines and is interpreted as an interaction with up to seven closely spaced anionic charges. Microtubules so formed appear to be normal by electron microscopy, and by salt, colchicine, and cold sensitivities. Lysyl residues in excess of seven (or five for arginine) in larger oligomers interact nearly noncooperatively. Separation of lysyl charges by intercalation of alanyl residues reduced assembly promoting potency for hexalysines. The cooperative portion of the response is most likely associated with the highly acidic extreme C termini of tubulin because their removal with limited subtilisin treatment markedly reduces oligolysine potency. However, some cooperative interactions with oligocations can also occur with more widely spaced anionic charges elsewhere in tubulin. The potential role of oligocations in the intracellular regulation of microtubule assembly is discussed.
Death Receptor Ligands: New Strategies for Combined Treatment with Ionizing Radiation (2003)

The major goal of modern radiation oncology is the achievement of a maximal tumor control with minimal normal tissue damage. However, normal tissue tolerance may preclude the application of tumoricidal radiation doses. In order to overcome this limitation, strategies either to increase normal tissue tolerance or to reduce the radiation dose required may prove beneficial. In this regard, attempts to minimize the required radiation dose by reducing the number of malignant clonogenic cells are promising. Therefore, therapies which induce programmed cell death (apoptosis) in tumor cells, may prove to be suitable approaches. TRAIL (TNFalpha-related apoptosis inducing ligand)/Apo2L is a very promising member of the family of death ligands. The ligand preferentially induces apoptotic cell death in a wide range of tumor cells but not in normal cells. TRAIL/Apo2L triggers apoptosis even in cells not undergoing apoptosis in response to radiation, since ionizing radiation induce apoptosis by a different pathway as death ligands although an overlapping set of molecules is involved. Combination of both modalities has been shown to induce additive or synergistic apoptotic effects and eradication of clonogenic tumor cells thereby increasing the therapeutic efficacy. The present article reviews this novel biological strategy for optimized radiotherapy based on the combination of ionizing irradiation and death receptor triggered cell death.
Layered Multicast: A Study of Loss Event Rate Estimation in a Low Level of Statistical Multiplexing (2005)

Layered multicast protocol (LMP) uses TCP-equation model to estimate TCP-compatible rate. One of the most important parameter of TCP-equation model is loss event rate. It is acquired by estimating the number of packets between two lost events, which is determined by packet-drop pattern at the bottleneck link. In a low level of statistical multiplexing environment packet-drop pattern at the bottleneck link is determined by the queuing management and the behaviours of competing data flows. Since TCP is the dominant protocol of the Internet, the performance of LMP is greatly affected by the behaviours of TCP flows. Since TCP is an aggressive and bursty protocol, competing with TCP results in volatile estimated loss event rate for LMP. Smoothing techniques for loss even rate have been proposed to reduce the volatility of loss event rate. This paper presents a comparative study of loss event rate smoothing techniques for layered multicast protocol. The study has been conducted in a low level statistical multiplexing environment.
Some Tetrasubstituted Naphthyl- and Tolylsilanes (1955)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSome Tetrasubstituted Naphthyl- and TolylsilanesHenry Gilman, Cecil G. Brannen, and Robert K. InghamCite this: J. Am. Chem. Soc. 1955, 77, 14, 3916–3919Publication Date (Print):July 1, 1955Publication History Published online1 May 2002Published inissue 1 July 1955https://pubs.acs.org/doi/10.1021/ja01619a069https://doi.org/10.1021/ja01619a069research-articleACS PublicationsRequest reuse permissionsArticle Views85Altmetric-Citations3LEARN 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
Laboratory evaluation of a new repellent camouflage face paint. (1995)

A combined formulation of the U.S. Army's camouflage face paints and the new extended duration topical insect/arthropod repellent was tested on human volunteers to determine repellency and duration of protection (2-12 h) against Aedes aegypti and Anopheles stephensi. Under laboratory conditions (27 degrees C and 80% RH), the face paint/repellent formulation provided > or = 95% repellency or better for up to 6 h for Ae. aegypti and 8 h for An. stephensi. An analysis of variance showed no significant differences in the repellent efficacy of the 4 camouflage colors: white, green, loam, and sand.
A Method Research of Intention Expression Based on Design State (2010)

Computer aided design system has provided effective help in alleviating the designer with heavy manual labor and raising efficiency and quality, but not in the field of industrial design for designer with professional support, mainly because the present software couldn’t remain synchronization with designer’s intention. In this paper, response to the requirements of providing dynamic design resources, expression is researched from the view of design state, and by the demand and analysis traces the design process history information, design intentions expression method is researched on the basis of design state, at last design intention expression model is built.
Invasive Monitoring in the Pediatric Patient (1992)

Monitoring in the practice of anesthesia is becoming increasingly sophisticated and complex, but the vigilance of the individual anesthesiologist remains the most important element in the safe conduct of anesthesia. Invasive monitoring in anesthesia practice has become synonymous with the observation of cardiovascular variables. Medical and technical knowledge of invasive monitoring is rapidly expanding, with manufacturers being quick to correct equipment problems as they are identified (for both commercial and legal reasons). Many companies also provide customdesigned products for individual hospitals (though we believe it would be improper to describe or compare the products of individual manufacturers). This chapter describes the application of currently available monitoring materials and techniques to pediatric practice.
An Interface between Computing, Ecology and Biodiversity : Environmental Informatics (2000)

The grand challenge for the 21 century is to harness knowledge of the earth`s biological and ecological diversity to understand how they shape global environmental systems. This insight benefits both science and society. Biological and ecological data are among the most diverse and complex in the scientific realm. spanning vast temporal and spatial scales, distant localities. and multiple disciplines. Environmental informatics is an emerging discipline applying information science, ecology, and biodiversity to the understanding and solution of environmental problems. In this paper we give an overview of the experiences of the San Diego Supercomputer Center (SDSC) with this new multidisciplinary science, discuss the application of computing resources to the study of environmental systems, and outline strategic partnership activities in environmental iformatics that are underway, We hope to foster interactions between ecology, biodiversity, and conservation researchers in East Asia-Pacific Rim and those at SDSC and the Partnership for Biodiversity Informatics.
Tumour necrosis factor (TNF-alpha) in leishmaniasis. II. TNF-alpha-induced macrophage leishmanicidal activity is mediated by nitric oxide from L-arginine. (1990)

Peritoneal macrophages from CBA mice incubated with recombinant murine tumour necrosis factor (TNF-alpha) are effective in killing the protozoa parasite Leishmania major in vitro. The leishmanicidal activity is directly correlated with the level of nitrite (NO2-) in the culture supernatants. The killing of intracellular parasites can be completely inhibited by L-NG-monomethyl arginine (L-NMMA), a specific inhibitor of the L-arginine:nitric oxide (NO) pathway. The level of NO2-, which is also a measurement of NO production, in the culture supernatant of TNF-alpha-activated macrophages can be progressively decreased to basal level with increasing concentrations of L-NMMA, but not with its D-enantiomer, D-NMMA. These data demonstrate that NO is an important effector mechanism in the TNF-alpha-induced macrophage killing of intracellular protozoa.
Intrusion detection solution to WLANs (2004)

With the increasing popularity of the wireless network, the security issue for mobile users could be even more serious than it can be expected. Here it is need to search for new architecture and mechanisms to protect the wireless networks and mobile computing application. This paper focuses on intrusion detection and security consideration in wireless local area networks (WLANs) and also presents intrusion detection for WLANs, which gives a wireless intrusion detection system and its architecture consideration. A wireless IDS is similar to a standard, wired IDS, but has additional deployment requirements as well as some unique features specific to WLAN intrusion and misuse detection. Meanwhile, we discuss some issues with wireless networks and Intrusion detection solution to wireless networks.
The role of groupwork in tackling organisational burnout (2012)

The issue of occupational burnout is a concern to managers as it impacts on the quality of client care. Burnout is said to comprise three elements. These are a high level of emotional exhaustion, a low sense of personal accomplishment and the development of an unfeeling, so-called depersonalised approach towards service users. In this paper, we describe two contrasting approaches that used groupwork to tackle the problem of staff stress and burnout in mental health workers. The first used three-day self-esteem workshops. The second used staff support groups that were run fortnightly over a five-year period. Both approaches have their merits. While the concept of burnout is essentially a negative one, there may be a role for developing alternative approaches based on positive psychology and attachment theory.
Bacterial chemotaxis transverse to axial flow in a microfluidic channel (2008)

Swimming bacteria sense and respond to chemical signals in their environment. Chemotaxis is the directed migration of a bacterial population toward increasing concentrations of a chemical that they perceive to be beneficial to their survival. Bacteria that are indigenous to groundwater environments exhibit chemotaxis toward chemical contaminants such as hydrocarbons, which they are also able to degrade. This phenomenon may facilitate bioremediation processes by bringing bacteria into closer proximity to these contaminants. A microfluidic device was assembled to study chemotaxis transverse to advective flow. Using a T-shaped channel design (T-sensor), two fluid streams were brought into contact by impinging flow. They then flowed adjacent to each other along a transparent channel. An advantage to this design is that it allows real-time visualization of bacterial distributions within the channel. Under laminar flow conditions a chemotactic driving force was created perpendicular to the direction of flow by diffusion of the chemical attractant from one input stream to the other. A comparison of the chemotactic band behavior in the absence and presence of flow showed that fluid velocity did not significantly impede chemotactic migration in the transverse direction.
Genome Research in the Cloud (2012)

High-throughput genome research has long been associated with bioinformatics, as it assists genome sequencing and annotation projects. Along with databases, to store, properly manage, and retrieve biological data, a large number of computational tools have been developed to decode biological information from this data. However, with the advent of next-generation sequencing (NGS) technology the sequence data starts generating at a pace never before seen. Consequently researchers are facing a threat as they are experiencing a potential shortage of storage space and tools to analyze the data. Moreover, the voluminous data increases traffic in the network by uploading and downloading large data sets, and thus consume much of the network's available bandwidth. All of these obstacles have led to the solution in the form of cloud computing.