gebhart/patrepeval huggingface dataset:
O estudo das representações sociais no Brasil (The study of-the social representations in Brazil) (2000)

The present paper is conceived a as contribution to the history of the Brazilian social psychology, through the systematization of some memories and records ofthe trajectory ofthe theory of social representations in Brazil from 1982 to 1997. The first part of the text describes the initial passes of this trajectory (1982 to 1987) and evaluates their significance within the academic context when dealing with the teaching and research of social psychology. The second part presents the Brazilian production in the field of social representations during the next ten yars (1988 to 1997), resulting from an inquiry undertaken by rese- achers of forteen universities distributed over the whole country. The evolution of this production is accompanied year after year, in different fields of knowledge, within five categories - books, chapters of books, articles, communications at events, theses and disserta- tions. There also is presented a brief comparative analysis of its substantive content during the wholen period.
A lab-on-a-chip for rapid blood separation and quantification of hematocrit and serum analytes (2011)

In this work, a new lab-on-a-chip for rapid analysis of low volume blood samples was designed, fabricated and demonstrated for integration of serum separation, hematocrit evaluation, and protein quantitation. Blood separation was achieved using microchannel flow-based separation. A novel method for evaluating hematocrit from microfluidic flow-separated blood samples was developed using gray scale analysis of a point-and-shoot digital photograph of separated blood in a micochannel. Protein quantitation was subsequently performed in a high surface area-to-volume ratio microfluidic chemiluminescent immunoassay using cell depleted serum produced by microfluidic flow-based separation of whole blood samples. All three steps were achieved in a single microchannel with separation of blood samples and hematocrit evaluation in less than 1 min, and protein quantitation in 5 min.
A joint deep-network-based image restoration algorithm for multi-degradations (2017)

In the procedures of image acquisition, compression, and transmission, captured images usually suffer from various degradations, such as low-resolution and compression distortion. Although there have been a lot of research done on image restoration, they usually aim to deal with a single degraded factor, ignoring the correlation of different degradations. To establish a restoration framework for multiple degradations, a joint deep-network-based image restoration algorithm is proposed in this paper. The proposed convolutional neural network is composed of two stages. Firstly, a de-blocking subnet is constructed, using two cascaded neural network. Then, super-resolution is carried out by a 20-layer very deep network with skipping links. Cascading these two stages forms a novel deep network. Experimental results on the Set5, Setl4 and BSD100 benchmarks demonstrate that the proposed method can achieve better results, in terms of both the subjective and objective performances.
Isolation and characterization of the plasma membrane of human erythrocytes infected with the malarial parasite Plasmodium falciparum. (1983)

Human erythrocytes infected with the malarial parasite Plasmodium falciparum were labeled metabolically with a mixture of 15 radioactive amino acids. When synchronously growing parasites were at the schizont stage of development infected cells were concentrated and purified by using a Percoll-Hypaque gradient. The plasma membrane of the infected erythrocyte, isolated by binding cells to a solid support (Affi-Gel 731, Bio-Rad), was less than 1% contaminated with parasite membranes. Erythrocyte membrane proteins were analyzed by polyacrylamide gel electrophoresis and autoradiography. Despite the high sensitivity of the procedure, there was no evidence for the insertion of parasite proteins into the infected host cell membrane. One possible exception is a Mr 230,000 parasite protein present maximally as 9,000 copies per infected erythrocyte membrane. Moreover, no differences in the membrane proteins were observed between a highly knobby clone and a knobless clone of the same strain of P. falciparum. These findings appear to rule out the presence of parasite protein(s) playing a structural role in the formation of knobs on the erythrocyte surface and question whether the antigenic determinants on the P. falciparum-infected erythrocyte are of parasite origin or whether such antigens represent newly exposed or chemically modified erythrocyte determinants.
Diseño accesible de espacios de intercambio para adultos mayores (2007)

Aging of the contemporary society influenced the developments of all the scientifical and profesional disciplines. Designers and architects must think aroun...
M11-L: A Local Density Functional That Provides Improved Accuracy for Electronic Structure Calculations in Chemistry and Physics (2011)

Local approximations to the exchange-correlation functional are of special interest because of their cost advantages and their useful accuracy for efficient calculations on systems (such as many transition metal catalysts) with significant multiconfigurational wave function character. We present a meta-GGA exchange-correlation functional, called M11-L, that employs dual-range local exchange to provide broad accuracy for both single-configurational and multiconfigurational molecules and for solid-state lattice constants. Also notable is the high accuracy (for a local functional) for chemical reaction barrier heights. The mean unsigned error on a broad chemistry database of 338 energetic data is lower than that for any other known functional, even hybrid functionals and range-separated hybrid functionals. This success shows that the dependence of the exchange energy density on interelectronic distance is quite different at short-range and long-range, and it establishes a new standard for the limit of what can be achieved with a local exchange-correlation functional.
Tuning into terahertz (2010)

One of the mainsources of THz radiation, the interdigitated photoconductive antenna, can now be ‘tuned’ to THz frequencies that were previously difficult to reach. Researchers at the Ecole Normale Supérieure in France found that changing the spacing between the electrodes in the an-tenna's structure enables the emission spectrum to be centred at a chosen frequency; a property that will be useful for spectroscopy and imaging, where access to particular parts of the THz spectrum is needed.
Radiation characteristics and polarisation of undulated microstrip line antennas (1985)

A numerical method is used to investigate the radiation from undulated microstrip line antennas. The undulated line is assumed to be suspended over a ground plane and its current distribution is determined using a moment method type solution. This current distribution is then used to compute the co-polar and cross-polar radiation fields. It is found that the current distribution has an oscillating behaviour along the line, with a frequency which is twice the number of undulations. The cross-polarisation is found to be high and relatively independent of the undulating shape. Its relative level, however, is reduced for large arrays, due to the array factor affecting the co-polar field. A procedure for the reduction or elimination of the cross-polarisation is then proposed, which is based on utilising two undulated lines with mutually inverted undulations. A design method for achieving low sidelobe levels is also proposed and a design example with sidelobes around the −40 dB range is presented.
Efectes barocalòrics en cristalls plàstics derivats de l'adamantà (2017)

La proposta consisteix en l'analisi calorimetric d'un material, l'adamanta, amb algunes propietats conegudes que el converteixen en un candidat molt prometedor per refredar compressors basats ​​en l'estat solid.
Dynamic balance control of humanoids for multiple grasps and non coplanar frictional contacts (2007)

Human beings perform complex tasks while even keeping balance. Though this is evident for a human, it is very difficult to adapt human motion to humanoid robots, due to the posture redundancy. In this paper we propose a conceptually simple framework of human posture control, scoping in a general way with grasp, task achievement and being on the same time robust to external disturbances. We do this by establishing physically meaningful constraints on the force level. In order to respect all constraints, we solve for a quadratic minimization problem (quadratic programming), yielding the required joint torque controls. Contrarily to most other approaches, we deal also with unilateral contacts (due to friction) as well as bilateral grasps which allow for example for arbitrarily steering or pulling on a handhold. Additionally, and in contrast to classical methods based on ZMP, we account also for contacts not all being in the same plane, as hand-wall contact.
The human insulin-like growth factor (IGF) binding protein-3 inhibits the growth of fibroblasts with a targeted disruption of the IGF-I receptor gene. (1995)

The insulin-like growth factors (IGFs) are important mitogens that exert their proliferative effects on cells via the type I IGF receptors (IGF-R). The IGFs also associate with IGF binding proteins (IGFBPs). IGF-inhibitory, IGF-stimulatory, and IGF-independent effects of IGFBPs on cell growth have been reported. We have asked whether the IGFBP-3 has an effect on cell growth, which is independent of its ability to bind IGF-I and thus inhibit the activation of the IGF-I receptor. For this purpose, we have used a fibroblast cell line (R- cells) derived from mouse embryos homozygous for a targeted disruption of the IGF-R gene. When compared with wild type cells (W), which bind IGF-I with high affinity and specificity, R- cells transfected with a mammalian expression vector containing the human (h) IG-FBP-3 cDNA were selected (R-/BP3) and found to express hIGFBP-3 mRNA (detected by Northern blots) and to secrete hIGFBP-3 protein [detected by Western ligand blotting (WLB), immunoblotting, and immunoprecipitation as well as immunofluorescence confocal microscopy]. Growth of five different R- cells, and 10-fold slower compared with W cells, grown under identical conditions. Confluent R- cells. These experiments show that the overexpression of IGFBP-3 has an inhibitory effect on cell growth which does not involve IGF binding to, or signal transduction via, the type I IGF-R. We conclude that the cellular production of IGFBPs serves as a negative regulator of cell proliferation which involves a cellular signaling pathway separate from the IGF-IGF-R system.
Ceramic capillary connector for 1.3 μm single-mode fibres (1979)

A low-loss demountable connector with a precision-made ceramic capillary is presented for 1.3 μm single-mode fibres. The field-assembly connector can be assembled without adjusting fibre core alignment to the centre of a plug. By using a plastic thin film, an average connection loss of below 0.3 dB is obtained.
Whole-Body Walking Generation using Contact Parametrization: A Non-Linear Trajectory Optimization Approach (2020)

In this paper, we describe a planner capable of generating walking trajectories by using the centroidal dynamics and the full kinematics of a humanoid robot model. The interaction between the robot and the walking surface is modeled explicitly through a novel contact parametrization. The approach is complementarity-free and does not need a predefined contact sequence. By solving an optimal control problem we obtain walking trajectories. In particular, through a set of constraints and dynamic equations, we model the robot in contact with the ground. We describe the objective the robot needs to achieve with a set of tasks. The whole optimal control problem is transcribed into an optimization problem via a Direct Multiple Shooting approach and solved with an off-the-shelf solver. We show that it is possible to achieve walking motions automatically by specifying a minimal set of references, such as a constant desired Center of Mass velocity and a reference point on the ground.
Identification of Dual α4β1 Integrin Binding Sites within a 38 Amino Acid Domain in the N-terminal Thrombin Fragment of Human Osteopontin (2001)

Previous work from our laboratory demonstrates that the 4 1 integrin is an adhesion receptor for OPN and that 4 1 binding site(s) are present in the N-terminal thrombin fragment of osteopontin (OPN) (Bayless, K.
<title>Second Harmonic Generation With High Power Short Pulses From An Infrared FEL</title> (1984)

A careful analysis of the second harmonic generation conversion efficiency for a medium power infrared free electron laser (FEL) has been carried out. Thermal effects, linewidth effects and dispersion in the nonlinear crystal have been taken into account. Some simple approximate relations have been derived to provide estimates of the conversion efficiency attainable when using high power, high repetition rate picosecond pulses produced by a linac-driven FEL.
Optical properties and electronic band structure of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">ZnIn</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Te</mml:mi></mml:mrow><mml:mrow><mml:mn>4</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math> (2001)

Optical properties of the defect-chalcopyrite-type semiconductor ${\mathrm{ZnIn}}_{2}{\mathrm{Te}}_{4}$ have been studied by optical absorption, spectroscopic ellipsometry, and x-ray photoelectron spectroscopy. Optical absorption measurements suggest that ${\mathrm{ZnIn}}_{2}{\mathrm{Te}}_{4}$ is a direct-gap semiconductor having a band gap of \ensuremath{\sim}1.40 eV. The complex dielectric-function spectra $\ensuremath{\varepsilon}(E)={\ensuremath{\varepsilon}}_{1}(E)+i{\ensuremath{\varepsilon}}_{2}(E),$ measured by spectroscopic ellipsometry, reveal distinct structures at energies of the critical points in the Brillouin zone. Analysis of the numerically derived $\ensuremath{\varepsilon}(E)$ spectra facilitates the precise determination of the critical point parameters (energy position, strength, and broadening). By performing the band-structure calculation, these critical points are successfully assigned to specific points in the Brillouin zone. The measured x-ray photoelectron spectrum is also presented along with the density-of-states $N(E)$ calculation.
Magnetic properties of nanostructured CoSm/FeCo films (1995)

${\mathrm{Co}}_{80}$${\mathrm{Sm}}_{20}$/${\mathrm{Fe}}_{65}$${\mathrm{Co}}_{35}$ bilayer and multilayer films with Cr underlayers and overlayers have been fabricated and studied. All the samples prepared have in-plane anisotropy and the hysteresis loops were simple single loops for ${\mathit{t}}_{\mathrm{FeCo}}$\ensuremath{\le}300 \AA{} indicating that the two phases are strongly exchange coupled. The magnetization of these samples is found to increase with increasing FeCo layer thickness for a fixed CoSm layer thickness. The coercivity, anisotropy constant, and anisotropy field for films with fixed CoSm layer thickness were found to decrease with increasing FeCo layer thickness. The magnetization squareness values of the hysteresis loops in the direction parallel to the film plane, for different CoSm and FeCo layer thicknesses, were found to be close to S\ensuremath{\approxeq}0.75. The energy products for these samples vary from about 6 MG Oe at room temperature to 26 MG Oe at 30 K. The shape and the behavior of the initial loops and the minor loops suggest that wall pinning is the dominant coercivity mechanism in these films. Reversible demagnetization curves were measured and found to be consistent with the behavior expected for ``exchange-spring'' magnets.
Bartonella quintana and Urban Trench Fever (2000)

Contemporary Bartonella quintana infections have emerged in diverse regions of the world, predominantly involving socially disadvantaged persons. Available data suggest that the human body louse Pediculus humanus is the vector for transmission of B. quintana. Descriptions of the clinical manifestations associated with contemporary B. quintana infections have varied considerably and include asymptomatic infection, a relapsing febrile illness, headache, leg pain, "culture-negative" endocarditis, and, in human immunodeficiency virus-infected persons, bacillary angiomatosis. Laboratory diagnosis is most convincing when B. quintana is isolated in blood culture, but growth often takes 20-40 days; problems exist with both sensitivity and specificity of serological assays. On the basis of available information, use of doxycycline, erythromycin, or azithromycin to treat B. quintana infections is recommended. Treatment of uncomplicated B. quintana bacteremia for 4-6 weeks and treatment of B. quintana endocarditis (in a person who does not undergo valve surgery) for 4-6 months are recommended, with the addition of a bactericidal agent (such as a third-generation cephalosporin or an aminoglycoside) during the initial 2-3 weeks of therapy for endocarditis.
Improving Asset Management and Order Fulfillment at Deere & Company's C&CE Division (2005)

In 2001, Deere's Commercial and Consumer Equipment (C&CE) Division, with growing sales of $3 billion, set out to improve its on-time delivery from plants to dealers and to reduce its inventory while maintaining customer service levels. C&CE used state-of-the-art inventory optimization techniques embedded in SmartOps' multistage inventory planning and optimization (MIPO) product to set trustworthy weekly inventory targets. C&CE used these targets, together with appropriate dealer incentives, to transform to a pull system and exceed its goals. With 2,500 dealers, 100 product families, and a 26-week planning horizon, Deere's application of multiechelon inventory optimization may be the largest example of applied stochastic inventory theory in practice in a multiagent environment. With the enterprise-wide system integration, Deere improved its factories' on-time shipments from 63 percent to 92 percent, while maintaining customer service levels at 90 percent. Between 2001 and 2003, Deere reduced or avoided inventory by $890 million, improving annual shareholder value added (SVA) by $107 million. By the end of 2004, the C&CE Division will exceed its goal in $1 billion of inventory reduction or avoidance, a year ahead of schedule.
Evaluation of Reorientation Techniques and Distractors for Walking in Large Virtual Environments (2008)

Virtual Environments (VEs) that use a real-walking locomotion interface have typically been restricted in size to the area of the tracked lab space. Techniques proposed to lift this size constraint, enabling real walking in VEs that are larger than the tracked lab space, all require reorientation techniques (ROTs) in the worst-case situation-when a user is close to walking out of the tracked space. We propose a new ROT using visual and audial distractors-objects in the VE that the user focuses on while the VE rotates-and compare our method to current ROTs through three user studies. ROTs using distractors were preferred and ranked more natural by users. Our findings also suggest that improving visual realism and adding sound increased a user's feeling of presence. Users were also less aware of the rotating VE when ROTs with distractors were used. Our findings also suggest that improving visual realism and adding sound increased a user's feeling of presence.
A high-performance tandem white organic light-emitting diode combining highly effective white-units and their interconnection layer (2009)

By utilizing 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline:Li/MoO3 as an effective charge generation layer (CGL), we extend our recently demonstrated single-emitting-layer white organic light-emitting diode (WOLED) to realize an extremely high-efficiency tandem WOLED. This stacked device achieves maximum forward viewing current efficiency of 110.9 cd/A and external quantum efficiency of 43.3% at 1 μA/cm2 and emits stable white light with Commission Internationale de L’Eclairage coordinates of (0.34, 0.41) at 16 V. It is noted that the combination of effective single units and CGL is key prerequisite for realizing high-performance tandem WOLEDs.
Studies on DNA Replication in the Bacteriophage T4 a--.gif System (1983)

In vitro systems reconstituted from the purified components of a DNA replication apparatus have provided us with much of our knowledge about the mechanistic aspects of DNA replication. The large DNA bacteriophages are especially suited for this approach, since they code for most of the proteins required for their own replication. This makes the task of defining essential replication genes and isolating their products much more straightforward than in bacteria or eukaryotic cells.
α<sub>2</sub>‐Antiplasmin and its deficiency: fibrinolysis out of balance (2008)

Fibrinolysis serves an important role in the process of coagulation, ensuring that clots that are formed in response to injury resolve after the injured tissue is repaired. Fibrinolysis occurs because the protein plasminogen is converted to the active serine protease plasmin by its activating molecules (primarily tissue plasminogen activator). One of the inhibitors of fibrinolysis is alpha(2)-antiplasmin, which acts as the primary inhibitor of plasmin(ogen). Congenital deficiency of alpha(2)-antiplasmin causes a rare bleeding disorder because of increased fibrinolysis. Despite the rare nature of this disorder, understanding of the actions of alpha(2)-antiplasmin and the results of its deficiency has provided the opportunity for better understanding of the fibrinolytic system in both how it affects the risk of bleeding and its impact on other bodily systems. Here, we review the history of the discovery of alpha(2)-antiplasmin, our understanding of its genetics and function, and our current knowledge of its congenital deficiency. We also discuss some of the current avenues of investigation into its impact on other diseases and physiological states.
Oxidation by cobalt(<scp>III</scp>) acetate. Part 10. Effects of ring substituents on the product distributions in the oxidation of β-methylstyrenes by cobalt(<scp>III</scp>) acetate in acetic acid (1986)

The oxidation of ring-substituted β-methylstyrenes by cobalt(III) acetate in acetic acid has been studied by product analysis and the relative rates were measured by a competition method. Electron-releasing groups (p-MeO, p-Me, and p-But) accelerated both the reaction rate and the formation of glycol monoacetates, while electron-withdrawing groups (p-Cl and m-Cl) not only retarded the reaction but also favoured the formation of allylic acetate instead of glycol monoacetate. The good relationship of relative rates with δ+ in the Hammett plot showed that both products were derived from the same intermediate. The reaction mechanism is discussed in connection with the stabilities of radical cations formed by a one-electron transfer from the olefins to cobalt(III) acetate.