gebhart/patrepeval huggingface dataset:
See-through optical combiner for augmented reality head-mounted display: index-matched anisotropic crystal lens (2017)

A novel see-through optical device to combine the real world and the virtual image is proposed which is called an index-matched anisotropic crystal lens (IMACL). The convex lens made of anisotropic crystal is enveloped with the isotropic material having same refractive index with the extraordinary refractive index of the anisotropic crystal. This optical device functions as the transparent glass or lens according to the polarization state of the incident light. With the novel optical property, IMACL can be utilized in the see-through near eye display, or head-mounted display for augmented reality. The optical property of the proposed optical device is analyzed and aberration by the anisotropic property of the index-matched anisotropic crystal lens is described with the simulation. The concept of the head-mounted display using IMACL is introduced and various optical performances such as field of view, form factor and transmittance are analyzed. The prototype is implemented to verify the proposed system and experimental results show the mixture between the virtual image and real world scene.
Application of three-dimensional finite element method in root canal therapy (2009)

The three-dimensional finite element method is one of the most important methods in the study of oral biomechanics. It is important to adopt three-dimensional finite element method to simulate and analyse stress distribution of the tooth and filling material in endodontics. Many scholars research different of influencing factors of stress analysis in root canal preparation and root canal filling. This review was represented on the application and research progress of three-dimensional finite element method in root canal therapy in recent years.
Neurotrophin Effects on Survival and Expression of Cholinergic Properties in Cultured Rat Septal Neurons under Normal and Stress Conditions (1996)

These studies tested the hypothesis that survival-promoting effects of neurotrophins on basal forebrain cholinergic neurons are enhanced under stress. Septal neurons from embryonic day 14-15 rats exposed for 10-14 d to neurotrophin [nerve growth factor (NGF), brain-derived neurotrophic factor (BDNF), neurotrophin-3 (NT-3), or neurotrophin-4 (NT-4), each at 100 ng/ml] showed a two- to threefold increase in choline acetyltransferase (ChAT) activity, with little evidence of synergistic interactions. Neurotrophins produced no significant increase in the survival of total or acetylcholinesterase (AChE)-positive neurons at moderate plating density (1200-1600 cells/mm2). However, with very low plating densities (2-28 cells/mm2) BDNF, NT-3, and NT-4 (but not NGF) increased total neuronal survival, and BDNF increased survival of AChE-positive neurons. NGF and BDNF enhanced ChAT activity and survival of cholinergic neurons after a 24 hr hypoglycemic stress, even when added 1 hr after stress onset. All four tested neurotrophins increased total neuronal survival after hypoglycemic stress. These results suggest that neurotrophins are important for preservation of central cholinergic function under stress conditions, with different neurotrophins protecting against different stresses. The stress-associated survival-promoting effects of neurotrophins were not limited to the cholinergic subpopulation.
Československo-nemecké hospodárske vzťahy (vývoj - problémy - perspektívy) (1992)

Jiří Kosta, nar. 1912, absolvent Vysoké školy obchodní, v letech 1962-1969 vědecký pracovník Ekonomického ústavu ČSAV. Od roku 1969 žije v SRN. Emeritní profesor J. W. Goethe Universität ve Frankfurtu nad Mohanem. Zabývá se národním hospodářstvím a politologií.
Microfabricated Silicon Microneedle Array for Transdermal Drug Delivery (2006)

10.1088/1742-6596/34/1/186
Selective elimination of mRNAs in vivo: complementary oligodeoxynucleotides promote RNA degradation by an RNase H-like activity. (1987)

Oligodeoxynucleotides lead to translation arrest of complementary mRNAs in the wheat germ translation system by a degradation of the mRNA. In an attempt to develop an effective reverse genetic approach in vivo, we demonstrate that injection of short (15- to 30-nucleotide) oligonucleotides into Xenopus oocytes leads to complete degradation of both injected and endogenous mRNAs by means of an RNase H-like activity.
Direct load management of electric vehicles (2011)

Electrical Vehicles are gaining increasing attention, due to the opportunities and challenges they present for the energy market. On the one hand, they will allow to drastically reduce the need for oil; on the other hand they may require a significant shift in the day to day management of the electricity generation. This paper is concerned with finding appropriate models for residential load in light of a widespread penetration of electric vehicles. The analysis is aimed at finding a SmartGrid solution that would enable us to optimize the generation dispatch in real time and allow to plug cars in any SmartGrid enabled plug. The key idea is to discriminate between regular load and the load due to the EVs, gathering in real time aggregate information about the sensed EV arrivals and their associated charging times in a demand matrix, that can be readily used to optimize the dispatch, while updating without real time constraints the billing record for the EV.
Photoacoustic thermography of tissue (2014)

Photoacoustic (PA) techniques can measure temperature in biological tissues because PA signal amplitude is sensitive to tissue temperature. So far, temperature-measuring PA techniques have focused on sensing of temperature changes at a single position. In this work, we photoacoustically measured spatial distribution of temperature in deep tissue. By monitoring the temperature at a single position using a thermocouple, the relationship between the PA signal amplitude and the actual temperature was determined. The relationship was then used to translate a PA image into a temperature map. This study showed that it is possible to calibrate the system for the temperature range of hyperthermia using single-point measurements over a smaller temperature range. Our experimental results showed a precision of -0.8±0.4°C (mean±standard error) in temperature measurement, and a spatial resolution as fine as 1.0 mm. PA techniques can be potentially applied to monitor temperature distribution deep in tissue during hyperthermia treatment of cancer.
Value of metallic stent in the management of esophageal stricture (2000)

目的 评价金属支架治疗食管良、恶性狭窄的价值.方法 采用镍钛合金(不带膜)和317L合金(带膜)支架治疗食管狭窄27例(4例食管胃吻合口狭窄、23例恶性狭窄),包括5例食管呼吸道瘘.置放支架方法为先经胃镜行食管扩张,再于X线下置管的二部法.吞咽状况用Neuhaus分级评估.结果 病人术后吞咽分级降低2个等级.狭窄部直径由(3.16±1.83) mm扩张至(14.62±3.12) mm(P＜0.01).带膜金属支架可使瘘口完全封闭.术后近、远期并发症发生率为40.7%(11/27),依次为支架移位3例、出血3例、剧烈疼痛2例、再狭窄3例.结论 金属支架治疗食管恶性狭窄是有效的姑息方法,带膜支架治疗食管呼吸道瘘相当有效.
Mechanisms and Kinetics for Sorption of CO<sub>2</sub> on Bicontinuous Mesoporous Silica Modified with <i>n</i>-Propylamine (2011)

We studied equilibrium adsorption and uptake kinetics and identified molecular species that formed during sorption of carbon dioxide on amine-modified silica. Bicontinuous silicas (AMS-6 and MCM-48) were postsynthetically modified with (3-aminopropyl)triethoxysilane or (3-aminopropyl)methyldiethoxysilane, and amine-modified AMS-6 adsorbed more CO(2) than did amine-modified MCM-48. By in situ FTIR spectroscopy, we showed that the amine groups reacted with CO(2) and formed ammonium carbamate ion pairs as well as carbamic acids under both dry and moist conditions. The carbamic acid was stabilized by hydrogen bonds, and ammonium carbamate ion pairs formed preferably on sorbents with high densities of amine groups. Under dry conditions, silylpropylcarbamate formed, slowly, by condensing carbamic acid and silanol groups. The ratio of ammonium carbamate ion pairs to silylpropylcarbamate was higher for samples with high amine contents than samples with low amine contents. Bicarbonates or carbonates did not form under dry or moist conditions. The uptake of CO(2) was enhanced in the presence of water, which was rationalized by the observed release of additional amine groups under these conditions and related formation of ammonium carbamate ion pairs. Distinct evidence for a fourth and irreversibly formed moiety was observed under sorption of CO(2) under dry conditions. Significant amounts of physisorbed, linear CO(2) were detected at relatively high partial pressures of CO(2), such that they could adsorb only after the reactive amine groups were consumed.
Learning the optimal operating point for many-core systems with extended range voltage/frequency scaling (2013)

Near-Threshold Computing (NTC) has emerged as a solution that promises to significantly increase the energy efficiency of next-generation multi-core systems. This paper evaluates and analyzes the behavior of dynamic voltage and frequency scaling (DVFS) control algorithms for multi-core systems operating under near-threshold, nominal, or turbo-mode conditions. We adapt the model selection technique from machine learning to learn the relationship between performance and power. The theoretical results show that the resulting models satisfy convexity properties essential to efficiently determining optimal voltage/frequency operating points for minimizing energy consumption under throughput constraints or maximizing throughput under a given power budget. Our experimental results show that, compared with DVFS in the conventional operating range, extended range DVFS control including turbo-mode and near-threshold operation achieves an additional (1) 13.28% average energy reduction under iso-performance conditions, and (2) 7.54% average throughput increase under iso-power conditions.
Concrete Materials: Properties, Specifications, and Testing (1992)

This book presents an in-depth approach to concrete ingredients and their relationships to concrete by discussing their properties, pertinent test methods, specifications, proper use and selection, and solutions to problems in practice. The approach is practice oriented, and the book assists in the improved application of concrete through a thorough understanding of its ingredients. This is aided by the discussion of certain fundamental aspects and relationships in quantitative forms, and by also presenting the interpretation of research and experience. An extensive bibliography is included. The book is a current, organized summary of knowledge concerning concrete-making materials, which will enable the engineer/user to make the best possible product using these materials.
Methylcellulose fibrils: a mini review (2019)

Abstract This review covers the recently discovered methylcellulose (MC) fibrils and their impact on MC thermogelation and overall gel strength. The thermogelation of MC aqueous solutions has been studied for nearly 100 years, but it has only recently been attributed to fibril formation at elevated temperatures. The assembly of a fibrillar network explains the general features of MC gels: the unusually high modulus, the turbidity, and the nonlinear rheological behavior at high strains. Recent scattering, atomic force microscopy (AFM) and cryogenic transmission electron microscopy (cryo‐TEM) experimental efforts have led to critical discoveries about the fibril structure. MC fibrils are 60% water by volume when in solution. The length of the fibrils, especially for shorter chains, is closely correlated with the MC chain contour length. On the other hand, the fibril radius does not depend on the temperature, molecular weight or concentration of MC chains but does seem to be correlated with chain stiffness. The discovery of MC fibrils represents a significant departure from the entanglement of polymer chains and localized phase separation based physical model of MC gelation, opens new questions about the mechanism of fibril formation and presents new pathways for stimulus responsive material design. © 2019 Society of Chemical Industry
Bioreactors, Perfusion (2009)

Abstract Perfusion culture entails continuous or semi‐continuous flow of a nutrient solution through a cell population while the cells are retained in the culture vessel. The main advantage of perfusion culture is its ability to achieve high cell density and allow convenient harvest of secreted products and/or removal of harmful extracellular metabolic byproducts. This oftentimes leads to improved volumetric productivity. In order to retain cells (and preferably viable cells) in a perfusion bioreactor, a key design element is the cell‐retention system. In this article, the current development of perfusion bioreactors for mammalian cell culture, with focus on the cell retention system, is reviewed.
Toxins and colonization factor antigens of enterotoxigenic Escherichia coli among residents of Jakarta, Indonesia. (2001)

Infection caused by enterotoxigenic Escherichia coli (ETEC) poses a serious health problem among children and adults in developing countries. Colonization of the small intestinal mucosa by ETEC strains is mediated by antigenically specific fimbriae, also known as colonization factor antigens (CFA). The significance of this study arises from reports that active and passive immunization with ETEC strains harboring CFAs has previously been shown to induce protective immunity against diarrhea in animal models. The aim of this study was to determine toxin-associated CFAs of ETEC isolated from a diarrheal disease case-control study in Jakarta, Indonesia. Thirteen hundred and twenty-three diarrheic and control patients with lactose-fermenting colonies were screened by ganglioside GM1-enzyme-linked immunosorbent assay (GM1-ELISA) for heat-labile (LT) and heat-stable (ST) toxins. Two hundred and forty-six (19%) ETEC isolates identified by GM1-ELISA for the LT/ST toxins were screened for CFAs by Dot blot assay using monoclonal antibodies against CFA/I, II, and IV and against the putative colonization antigens (PCF) PCFO159, PCFO166, CS7, and CS17. Of the 246 ETEC isolates, 177 (72%) elaborated ST, 56 (23%) produced LT, while 13 (5%) elicited both the ST and LT toxins. CFA testing of the 246 ETEC isolates showed that 21 (8%) expressed CFA/I, 3 (1%) exhibited CFA/II, 14 (6%) elaborated CFA/IV, while 7 (3%) expressed PCFO159 and PCFO159 plus CS5. No CFAs or PCFs could be associated with 201 (82%) of the ETEC strains. This report documents the types of CFAs associated with ETEC strains in Jakarta, Indonesia. These data may help current research efforts on the development of CFA-based vaccines for humans against ETEC and provide additional information for future ETEC vaccine trials in Southeast Asia.
Toward a Functional Annotation of the Human Genome Using Artificial Transcription Factors (2003)

We have developed a novel, high-throughput approach to collecting randomly perturbed gene-expression profiles from the human genome.A human 293 cell library that stably expresses randomly chosen zinc-finger transcription factors was constructed, and the expression profile of each cell line was obtained using cDNA microarray technology.Gene expression profiles from a total of 132 cell lines were collected and analyzed by (1) a simple clustering method based on expression-profile similarity, and (2) the shortest-path analysis method. These analyses identified a number of gene groups, and further investigation revealed that the genes that were grouped together had close biological relationships. The artificial transcription factor-based random genome perturbation method thus provides a novel functional genomic tool for annotation and classification of genes in the human genome and those of many other organisms.
Trends in Hospitalization Associated With Traumatic Brain Injury (1999)

Changes in hospital practices may be a major factor in the declining rates of TBI-related hospital admissions. These practices increasingly appear to exclude persons with less severe TBI from hospital admission and shift their care to outpatient settings.
Pleiotropic Effects of Mutations Involved in the Regulation of <i>Escherichia coli</i> K-12 Alkaline Phosphatase (1974)

Induction of alkaline phosphatase in wild-type Escherichia coli K-12 leads to the appearance of three new proteins in addition to alkaline phosphatase in the periplasmic space of the bacteria. These proteins are detected in autoradiograms of sodium dodecyl sulfate-acrylamide gel electropherograms of extracts from cells labeled with [(35)S]methionine. Studies with constitutive mutants defective in the three genes phoS, phoT, and phoR that have been shown to regulate alkaline phosphatase synthesis indicate that the three periplasmic proteins are coregulated with alkaline phosphatase. A mutant that has a deletion in the alkaline phosphatase structural gene phoA produces the three proteins, but a newly discovered mutant phoB that has a defect in the expression of alkaline phosphatase fails to produce the three proteins. phoB mutants are shown here to be unable to make detectable amounts of alkaline phosphatase polypeptides, as measured by immunoprecipitins or acrylamide gel electropherograms. On the basis of these results we suggest a new model for the regulation of alkaline phosphatase biosynthesis. In this model, a ternary complex composed of phoB(+) and phoR(+) gene products and an internal metabolite functions as a positive control element to regulate the transcription of several cistrons coding for periplasmic proteins.
A 1 Gs/s, 10b digital-to-analog converter (2002)

At the 8b level, digital-to-analog converter (DAC) sampling rates exceeding 500 Ms/s have been reported. However, new application areas such as direct digital synthesis (DDS) and high-resolution graphics systems call for 10b to 12b linearity at sampling rates of 250 MHz and beyond. In a GaAs technology a 12b, 1 Gs/s DAC system has been implemented at the expense of a total power consumption of 3 W. This paper presents a differential DAC combining both 10b linearity with a 1 Gs/s sampling rate using only 730 mW from a single -4.5 V supply. The die is 5.0 mm/sup 2/.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Real-time implementation of 4.4 Gbit/s QPSK intradyne receiver using field programmable gate array (2006)

A report is made on the real-time implementation of a QPSK intradyne receiver at a data rate of 4.4 Gbit/s. Both block phase estimation and differential detection were successfully demonstrated in combination with a frequency estimation algorithm with bit error ratios well below the threshold of modern forward error correction codes.
Efficient Computational Noise in GLSL (2012)

Abstract We present GLSL implementations of Perlin noise and Perlin simplex noise that run fast enough for practical consideration on current generation GPU hardware. The key benefits are that the functions are purely computational (i.e., they use neither textures nor lookup tables) and that they are implemented in GLSL version 1.20, which means they are compatible with all current GLSL-capable platforms, including OpenGL ES 2.0 and WebGL 1.0. Their performance is on par with previously presented GPU implementations of noise, they are very convenient to use, and they scale well with increasing parallelism in present and upcoming GPU architectures.
Adipocyte Enhancer‐Binding Protein 1 Modulates Adiposity and Energy Homeostasis (2007)

Abstract Objective: To determine whether adipocyte enhancer binding protein (AEBP) 1, a transcriptional repressor that is down‐regulated during adipogenesis, functions as a critical regulator of adipose tissue homeostasis through modulation of phosphatase and tensin homolog deleted on chromosome ten (PTEN) tumor suppressor activity and mitogen‐activated protein kinase (MAPK) activation. Research Methods and Procedures: We examined whether AEBP1 physically interacts with PTEN in 3T3‐L1 cells by coimmunoprecipitation analysis. We generated AEBP1‐null mice and examined the physiological role of AEBP1 as a key modulator of in vivo adiposity. Using adipose tissue from wild‐type and AEBP1‐null animals, we examined whether AEBP1 affects PTEN protein level. Results: AEBP1 interacts with PTEN, and deficiency of AEBP1 increases adipose tissue PTEN mass. AEBP1‐null mice have reduced adipose tissue mass and enhanced apoptosis with suppressed survival signal. Primary pre‐adipocytes from AEBP1‐null adipose tissues exhibit lower basal MAPK activity with defective proliferative potential. AEBP1‐null mice are also resistant to diet‐induced obesity, suggesting a regulatory role for AEBP1 in energy homeostasis. Discussion: Our results suggest that AEBP1 negatively regulates adipose tissue PTEN levels, in conjunction with its role in proliferation and differentiation of pre‐adipocytes, as a key functional role in modulation of in vivo adiposity.
Presence, but not type or degree of extension, of a cytoplasmic halo has a significant influence on preimplantation development and implantation behaviour (2003)

The present study indicates that any halo has a positive prognostic value on blastocyst quality, irrespective of the fact that it is light or extreme, polar or concentric. In addition, the developmental advantage of pattern 0 is confirmed.
Molecular Dynamics Simulation Study of Carbon Nanotube Welding under Electron Beam Irradiation (2003)

The simulation of electron beam induced welding of crossed carbon nanotubes is considered with classical molecular dynamics simulations. Covalent junctions are predicted to form between various types of carbon nanotubes that contain many defects and are likely to be representative of experimentally welded nanotubes under highly nonequilibrium synthesis conditions. The effect of the junction structure and hydrogen termination of dangling bonds on the mechanical responses of the junctions is also considered.
Other applications of induction heating (1990)

This chapter discusses applications of induction heating, including: soldering and brazing; tube welding; heating of resin kettles and other vessels; paint drying; induction heating in plastic working; annealing and stress relieving; longitudinal flux induction heating; transverse-flux heating; semiconductor processing; and travelling-wave heaters.
Adaptive IP2 calibration scheme for direct-conversion receivers (2006)

This paper presents a novel even order intermodulation distortion cancellation scheme based on adaptive digital calibration of the RF downconversion mixer. The system, designed for an on-chip implementation, utilizes a low-complexity LMS-based equalizer. Behavioral and circuit level simulations indicate the feasibility of the approach.
SURFACE ACTIVITY OF SOLID EMULSIFIERS (1939)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSURFACE ACTIVITY OF SOLID EMULSIFIERSJ. Mitchell Fain and Foster Dee SnellCite this: Ind. Eng. Chem. 1939, 31, 1, 48–51Publication Date (Print):January 1, 1939Publication History Published online1 May 2002Published inissue 1 January 1939https://pubs.acs.org/doi/10.1021/ie50349a011https://doi.org/10.1021/ie50349a011research-articleACS PublicationsRequest reuse permissionsArticle Views96Altmetric-Citations1LEARN 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 options Get e-Alerts