gebhart/patrepeval huggingface dataset:
Nature-inspired chiral metasurfaces for circular polarization detection and full-Stokes polarimetric measurements (2019)

The manipulation and characterization of light polarization states are essential for many applications in quantum communication and computing, spectroscopy, bioinspired navigation, and imaging. Chiral metamaterials and metasurfaces facilitate ultracompact devices for circularly polarized light generation, manipulation, and detection. Herein, we report bioinspired chiral metasurfaces with both strong chiral optical effects and low insertion loss. We experimentally demonstrated submicron-thick circularly polarized light filters with peak extinction ratios up to 35 and maximum transmission efficiencies close to 80% at near-infrared wavelengths (the best operational wavelengths can be engineered in the range of 1.3-1.6 µm). We also monolithically integrated the microscale circular polarization filters with linear polarization filters to perform full-Stokes polarimetric measurements of light with arbitrary polarization states. With the advantages of easy on-chip integration, ultracompact footprints, scalability, and broad wavelength coverage, our designs hold great promise for facilitating chip-integrated polarimeters and polarimetric imaging systems for quantum-based optical computing and information processing, circular dichroism spectroscopy, biomedical diagnosis, and remote sensing applications.
Vitamin D pathway gene variants and prostate cancer prognosis (2010)

Genetic variations in vitamin D pathway genes were found to alter both risk of recurrence/progression and PCa-specific mortality.
Genetic Demonstration of p47phox-Dependent Superoxide Anion Production in Murine Vascular Smooth Muscle Cells (2001)

These data provide direct functional proof that an oxidase requiring the p47phox component mediates superoxide release from VSMCs in the blood vessel wall in response to angiotensin II or PDGF-BB.
On Axisymmetrical Deformations of Nonlinear Membranes (1970)

The mechanics problem concerning large axisymmetric deformations of nonlinear membranes is reformulated in terms of a system of three first-order ordinary differential equations with explicit derivatives. With a set of proper boundary conditions, arrangements are made to change the boundary-value problem into the form of an initial value problem such that the solution can be obtained by standard numerical methods for integrating ordinary differential equations. The system of equations derived applies to the class of all axisymmetric deformations of membranes with a general elastic stress-strain relation. Three examples are given on inflating of a flat membrane, longitudinal stretching of a tube, and flattening of a semispherical cap. In the examples, the Mooney model are assumed to describe the material behavior of the membranes. The solution on the flat membrane serves to compare with an existing one in literature. The solutions on the tube and the cap are new.
Metodologia de investigação e novos avanços no sistema integrativo do Rorschach (S.I.R.) (1994)

Na sequência de trabalhos anteriores, onde o autor apresentou as características fundamentais do Sistema Integrativo do Rorschach-S.I.R. de Exner, o presente escrito propõe-se salientar a necessidade da observância da metodologia científica na investigação sobre e com o Rorschach, referindo, com esse fim, algum do trabalho empreendido por aquele estudioso e colaboradores, trabalho geralmente reconhecido como qualificado e que conferiu ao método um renovado crédito, em sectores donde há muito fora excluído. Focam-se, sobretudo, aspectos relativos ao conhecimento do Rorschach, sua natureza, funcionamento e características de instrumento de medida. No final, indicam-se algumas considerações de carácter metodológico sobre o uso do Rorschach na investigação.
Problem‐Based Learning in a Natural Resources Conservation and Management Curriculum: A Capstone Course (1999)

ABSTRACT Students trained in natural resources often lack experience integrating knowledge in ecology, sociology, economics, and other disciplines. We designed a 3‐credit capstone course for Natural Resource Conservation and Management students that explicitly teaches integration of disciplinary knowledge using an interest‐based approach to natural resource issues. The instructor chooses a current, high profile issue of local or regional significance that involves multiple stakeholders, lends itself to an interest‐based approach, has an undetermined outcome, is both concrete and complex, and is tractable within a single semester. The goal of the course is to identify key stakeholders and determine the interests that underlie stated positions, using this information to develop approaches to resolving conflict that are amenable to a broad group of stakeholders. Two of the issues we have examined in 6 yr of teaching this course are (i) the introduction of elk ( Cervus elaphus ) to eastern Kentucky, and (ii) the revision of the Daniel Boone National Forest Land and Management Plan. Both topics required students to apply ecological understanding in a sociopolitical context to the development of recommendations, which were communicated through a final report to key stakeholders. We create a totally active learning environment, where the trajectory of the semester project is student driven with instructor guidance. Methods used by the students include primary data collection, key informant interviews, and internet and library searches. This course has been well received by students and stakeholders, and serves as a model for capstone courses in the University of Kentucky College of Agriculture.
Field emission and photofluorescent characteristics of zinc oxide nanowires synthesized by a metal catalyzed vapor-liquid-solid process (2004)

The ZnO nanowires synthesized by vapor-liquid-solid growth mechanism with Cu and Au as the catalyst were investigated. The principal differences in morphology between Cu and Au catalyzed ZnO nanowires are observed and lead to significant differences in their field emission and photofluorescent characteristics. The Cu catalyzed ZnO nanowires with a high-quality wurtzite structure were grown vertically on p-type Si(100) substrate along [0002] direction. A strong ultraviolet emission at 381 nm is observed. These ZnO nanowires show excellent field emission properties with turn-on field of 0.83 V/μm and corresponding current density of 25 μA/cm2. The emitted current density of the ZnO nanowires is 1.52 mA/cm2 at a bias field of 8.5 V/μm. The large field emission area factor, β arising from the morphology of the nanowire field emitter, is partly responsible for the good emission characteristics. The ZnO nanowires with high emission current density and low turn-on field are expected to be used in field emission flat panel display.
Content-Based LCD Backlight Power Reduction With Image Contrast Enhancement Using Histogram Analysis (2011)

In recent years, low-power technology has had a significant impact on portable electronic devices; with mobile devices, the low-power circuit design has become the primary issue. At present, thin-film transistor liquid crystal display (TFT LCD) is widely used in handheld mobile devices. In terms of the overall system power consumption, TFT LCD power consumes 20%-45% of total system power due to different applications. The backlight of an LCD display dominates the power consumption of the whole system; controlling the backlight current to reduce the brightness and the contrast of LCDs can reduce the overall power consumption. However, this may cause significant changes in visual perception. In order to reduce the power consumption and eliminate the visual changes, the issue becomes: how to reduce the current by adjusting brightness and contrast in accordance with the current image. Based on content analysis, this paper proposes two new algorithms: the new backlight-dimming algorithm (NBDA) and the new image enhancement algorithm (NIEA). The proposed methods can, on average, simultaneously reduce power consumption by 47% and improve the image enhancement ratio by 6.8%. Moreover, the structural-similarity index metric (SSIM) is used to evaluate image quality.
ChemInform Abstract: Behavior of a Naphthopyranone Derivative Towards Some Nitrogen and Carbon Nucleophiles. (1992)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Los virus en biotecnología (1990)

El estudio de los sistemas virales y su influencia en la biotecnologia es un paradigma de la interrelacion entre la investigacion basica y la aplicada. El desarrollo de la biologia molecular, origen de la biotecnologia moderna, no se podria concebir sin la aportacion de los sistemas virales modelo. A su vez, la profundizacion en el conocimiento de los virus sencillos ha dado lugar a su utilizacion como herramientas biotecnologicas en general y mas en concreto como sistemas de expresion genica. Ello ha permitido el conocimiento mas profundo de sistemas geneticos mas complejos, asi como el abordaje de soluciones biotecnologicas a los problemas sanitarios derivados de las infecciones virales.
Hydrogen evolution inhibition with diethylenetriamine modification of activated carbon for a lead-acid battery (2014)

A novel idea to inhibit hydrogen evolution of AC application in lead-acid battery has been present in this paper. Nitrogen groups-enriched AC was prepared and who using in UltraBattery can decrease the hydrogen evolution, improve battery's charge acceptance and charge retention ability.
The Mitogen-activated Protein Kinase Kinase MEK1 Stimulates a Pattern of Gene Expression Typical of the Hypertrophic Phenotype in Rat Ventricular Cardiomyocytes (1995)

Adult mammalian ventricular cardiomyocytes are terminally differentiated cells that enlarge adaptively by hypertrophy. In this situation, genes normally expressed in the fetal ventricular cardiomyocyte (e.g. atrial natriuretic factor (ANF), beta-myosin heavy chain (beta-MHC), and skeletal muscle (SkM) alpha-actin) are re-expressed, and there is transient expression of immediate early genes (e.g. c-fos). Using appropriate reporter plasmids, we studied the effects of transfection of the constitutively active or dominant negative mitogen-activated protein kinase kinase MEK1 on ANF, beta-MHC, and SkM alpha-actin promoter activities in cultured ventricular cardiomyocytes. ANF expression was stimulated (maximally 75-fold) by the hypertrophic agonist phenylephrine in a dose-dependent manner (EC50, 10 microM), and this stimulation was inhibited by dominant negative MEK1. Cotransfection of dominant negative MEK1 with a dominant negative mitogen-activated protein kinase (extracellular signal-regulated protein kinase (ERK2)) increased this inhibition. Transfection with constitutively active MEK1 constructs doubled ANF promoter activity. The additional cotransfection of wild-type ERK2 stimulated ANF promoter activity by about 5-fold. Expression of beta-MHC and SkM alpha-actin was also stimulated. Promoter activity regulated by activator protein-1 or c-fos serum response element consensus sequences was also increased. We conclude that the MEK1/ERK2 cascade may play a role in regulating gene expression during hypertrophy.
Detection by PCR of<i>Neospora caninum</i>in Fetal Tissues from Spontaneous Bovine Abortions (1999)

The routine diagnosis of Neospora caninum abortion is based upon histopathologic changes in fetal tissues and identification of tissue parasites by immunohistochemistry. Confirmation of N. caninum infection by immunohistochemistry has low sensitivity. In the present study, we examined the utility of PCR in detecting N. caninum infection in fetal tissues from spontaneous bovine abortion. DNA was obtained from fresh and formalin-fixed tissues from 61 bovine fetuses submitted for abortion diagnosis. Histopathology and immunohistochemistry determined the true status of N. caninum infection in each fetus. In formalin-fixed paraffin-embedded tissues, PCR detected N. caninum DNA in 13 of 13 true-positive fetuses (100%) and in 1 of 16 true-negative fetuses (6%). In fresh or frozen tissues, PCR detected N. caninum DNA in 10 of 13 true-positive fetuses (77%) and 0 of 11 true-negative fetuses (0%). PCR also detected N. caninum DNA in 6 of 8 fetuses that had typical lesions of N. caninum but were immunohistochemistry negative, indicating a higher sensitivity of PCR in comparison to that of immunohistochemistry. N. caninum DNA was amplified most consistently from brain tissue. PCR detection of N. caninum DNA in formalin-fixed, paraffin-embedded tissues was superior to that in fresh tissues, presumably because of the increased accuracy of sample selection inherent in histologic specimens.
Effects of on-arrival, delayed vaccination and supplemental lysine on performance, antibody titer, temperature and metabolic profiles in response to modified-live viral respiratory vaccination (2013)

Improved vaccination efficacy and reducing virulence of bovine herpesvirus-1 could reduce respiratory disease incidence in feedlot cattle. Further, reduced virulence of herpesviruses by lysine supplementation is documented. The objective of this work was to evaluate the effects of timing as well as supplemental lysine associated with the administration of a modified-live respiratory viral vaccine on performance, feed intake, antibody titer response, and the febrile response. Thirty-six heifers were randomly assigned to treatments included no vaccine (CON), vaccination on d 0 (DO), and a d 14 (D14) of a 28 d receiving period. Daily feed intakes were recorded and body weight measured weekly. Temperature data loggers were attached to a blank controlled intrauterine drug release devices recording vaginal temperatures every 5 min. No differences (P > 0.10) among treatments were observed for performance. Daily intake was decreased for D14 versus D0 on d 14 (P < 0.01) and 15 (P < 0.10) and decreased (P < 0.05) on d 15 for the average of vaccinated calves versus CON. Vaginal temperature was increased (P < 0.10) on d 1 for D0 versus D14 heifers and increased (P < 0.05) for D14 versus D0 on d 14, 15 and 16. Sixty-four neonatal Holstein bull calves were used in a completely randomized design. Calves were fed milk replacer supplemented with either 17 g/d lysine (LYS) or an equivalent amount of casein (CAS) for 42 d. Calves were vaccinated with either an IN or an IM modified-live vaccine on d 36. Calves were weighed weekly and bled on d 35, 36, 37 and 42. Temperature data loggers were attached to rectal probes and temperatures were recorded every 5 min from d 28 to d 42. No differences (P > 0.10) were determined for average performance, rectal temperature, or IBR antibody titers between treatments. Serum urea nitrogen and the ratio of serum lysine:arginine increased (P < 0.05) for LYS compared to CAS calves. These results suggest that time vaccination alter feed intake and febrile response and supplementing lysine impacts nitrogen metabolism but does not alter the response to IBR vaccination in neonatal Holstein calves.
Zinc to Treat Tinnitus in the Elderly (2013)

Zinc is not an effective treatment for tinnitus in this subgroup of patients.
Pilot‐Plant Evaluation of Porous Biomass Supports (1988)

Several porous biomass‐support systems are currently available for use in the activated‐sludge process. One of these systems, Captor, utilizes polyurethane foam pads to provide biofllm growth sites that transform an aerobic suspended‐growth reactor into a fixed‐film reactor. The pads are periodically withdrawn via a conveyor system and cleaned to remove excess biomass. A two‐year pilot‐plant evaluation of the Captor biomass‐support system was undertaken at the U.S. Environmental Protection Agency's Test and Evaluation Facility. Three reactors were operated under various loading conditions, dissolved‐oxygen (DO) levels, and pad‐cleaning frequencies in both series and parallel flow configurations. The system efficiently converted soluble biochemical oxygen demand (BOD) to new biomass, but the majority of the solids exited in the process effluent rather than via the pad cleaners. Increased pad cleaning provided only marginal improvement. Nitrification was evaluated during series operation. Pad durability was good, but overall system economics were not impressive. There was no evidence of enhanced oxygen transfer efficiencies as previously claimed.
Why It Happened (2015)

In nowadays social networks, a huge volume of content containing rich information, such as reviews, ratings, microblogs, etc., is being generated, consumed and diffused by users all the time. Given the temporal information, we can obtain the event cascade which indicates the time sequence of the arrival of information to users. Many models have been proposed to explain how information diffuses. However, most existing models cannot give a clear explanation why every specific event happens in the event cascade. Such explanation is essential for us to have a deeper understanding of information diffusion as well as a better prediction of future event cascade.
Cyclin-Dependent Kinase Inhibition by New C-2 Alkynylated Purine Derivatives and Molecular Structure of a CDK2−Inhibitor Complex (2000)

A new series of 2,6,9-trisubstituted purines, characterized by the presence of a common alkynyl substituent at C-2 and a range of different anilino/benzylamino groups at C-6, were synthesized. These compounds were evaluated for their capacity to inhibit cyclin-dependent kinase activity (CDK1-cyclin B) in vitro. Compounds 4e (N-6-p-Cl-benzylamino derivative) and 5e (N-6-m-Cl-anilino derivative) exhibited the strongest inhibitory activity with an IC(50) of 60 nM. The structure of compound 4b (N-6-p-methoxybenzylamino derivative) in complex with human CDK2 was determined by X-ray crystallography, revealing the molecular basis of inhibition by this molecule. Subsequent molecular modeling studies allowed us to rationalize the SAR observed for these compounds.
Using of H‐Infinity Control Method in Attitude Control System of Rigid‐Flexible Satellite (2009)

The attitude control systems of satellites with rigid and flexible components are demanding more and more better performance resulting in the development of several methods control. For that reason, control design methods presently available, including parameters and states estimation, robust and adaptive control, as well as linear and nonlinear theory, need more investigation to know their capability and limitations. In this paper the investigated technique is H‐Infinity method in the performance of the Attitude Control System of a Rigid‐Flexible Satellite.
PointFlowNet: Learning Representations for Rigid Motion Estimation From Point Clouds (2019)

Despite significant progress in image-based 3D scene flow estimation, the performance of such approaches has not yet reached the fidelity required by many applications. Simultaneously, these applications are often not restricted to image-based estimation: laser scanners provide a popular alternative to traditional cameras, for example in the context of self-driving cars, as they directly yield a 3D point cloud. In this paper, we propose to estimate 3D motion from such unstructured point clouds using a deep neural network. In a single forward pass, our model jointly predicts 3D scene flow as well as the 3D bounding box and rigid body motion of objects in the scene. While the prospect of estimating 3D scene flow from unstructured point clouds is promising, it is also a challenging task. We show that the traditional global representation of rigid body motion prohibits inference by CNNs, and propose a translation equivariant representation to circumvent this problem. For training our deep network, a large dataset is required. Because of this, we augment real scans from KITTI with virtual objects, realistically modeling occlusions and simulating sensor noise. A thorough comparison with classic and learning-based techniques highlights the robustness of the proposed approach.
Spreading of the Ocean Floor: New Evidence (1966)

It is suggested that the entire history of the ocean basins, in terms of oceanfloor spreading,is contained frozen in the oceanic crust. Variations in the intensity and polarity of Earth's magnetic field are considered to be recorded in the remanent magnetism of the igneous rocks as they solidified and cooled through the Curie temperature at the crest of an oceanic ridge, and subsequently spread away from it at a steady rate. The hypothesis is supported by the extreme linearity and continuity of oceanic magnetic anomalies and their symmetry about the axes of ridges. If the proposed reversal time scale for the last 4 million years is combined with the model, computed anomaly profiles show remarkably good agreement with those observed, and one can deduce rates of spreading for all active parts of the midoceanic ridge system for which magnetic profilesor surveys are available. The rates obtained are in exact agreement with those needed to account for continental drift. An exceptionally high rate of spreading (approximately 4.5 cm/year) in the South Pacific enables one to deduce by extrapolation considerable details of the reversal time scale back to 11.5 million years ago. Again, this scale can be applied to other parts of the ridge system. Thus one isled to the suggestion that the crest of the East Pacific Rise in the northeast Pacific has been overridden and modified by the westward drift of North America, with the production of the anomalous width and unique features of the American cordillera in the western United States. The oceanicmagnetic anomalies also indicate that there was a change in derection of crustal spreading in this region during Pliocene time from eastwest to southeast-northwest. A profile from the crest to the boundary of the East Pacific Rise, and the difference between axial-zone and flank anomalies over ridges, suggest increase in the frequency of reversal of Earth's magnetic field, together, possibly, with decrease in its intensity, approximately 25 million years ago. Within the framework of ocean-floor spreading, it is suggested that magnetic anomaliesmay indicate the nature of oceanic fracture zones and distinguish the parts of the ridge system that are actively spreading. Thus data derived during the past year lend remarkable support to thehypothesis that magnetic anomalies may reveal the history of the ocean basins.