gebhart/patrepeval huggingface dataset:
Antenna Mutual Coupling Suppression Over Wideband Using Embedded Periphery Slot for Antenna Arrays (2018)

This paper presents a new approach to suppress interference between neighbouring radiating elements resulting from surface wave currents. The proposed technique will enable the realization of low-profile implementation of highly dense antenna configuration necessary in SAR and MIMO communication systems. Unlike other conventional techniques of mutual coupling suppression where a decoupling slab is located between the radiating antennas the proposed technique is simpler and only requires embedding linear slots near the periphery of the patch. Attributes of this technique are (i) significant improvement in the maximum isolation between the adjacent antennas by 26.7 dB in X-band and &gt;15 dB in Ku and K-bands; (ii) reduction in edge-to-edge gap between antennas to 10 mm (0.37 λ); and (iii) improvement in gain by &gt;40% over certain angular directions, which varies between 4.5 dBi and 8.2 dBi. The proposed technique is simple to implement at low cost.
REDUCING PREDATION THROUGH CHEMICALLY MEDIATED CAMOUFLAGE: INDIRECT EFFECTS OF PLANT DEFENSES ON HERBIVORES (2021)

Herbivores often specialize on particular hosts that provide both food and shelter from natural enemies. It is thus often unclear whether a plant's value as a food or its value as a safe shelter has played a larger role in selecting for specialization. Decorator crabs offer a novel opportunity to investigate the relative effects of diet vs. natural enemies in selecting for specialization because these crabs place plant shelter on their backs as camouflage but need not use these plants as food, thus decoupling the plant's value as a food from its value as a shelter. In this study, we show that juveniles of the decorator crab Libinia dubia selectively decorate with the chemically defended brown alga Dictyota menstrualis but treat this plant as a low-preference food. Common omnivorous fishes that are potential predators of Libinia avoid consuming Dictyota due to the alga's potent chemical defenses. In the field, juvenile crabs decorated with Dictyota experience significantly less predation than crabs decorated with an alga that is not chemically noxious to local fishes, and the Dictyota metabolite that most strongly deters feeding by fishes is the specific metabolite that determines decoration choice by this crab. Thus, by behaviorally sequestering defenses from this chemically noxious plant, these small crabs reduce their susceptibility to predation. In the presence of predators, juvenile crabs reduce their rate of feeding, but not of decorating, suggesting that antipredator behavior such as decorating takes precedence over feeding. In addition, only juvenile crabs that are of a size that can be consumed by local fishes decorate at all. Adult crabs that have carapace widths exceeding the gape size of co-occurring fishes do not decorate in either the field or the laboratory. Apparently predation, rather than diet selection, drives decoration specialization in Libinia, highlighting how indirect effects of plant secondary chemistry can impact herbivore behavior, ecology, and evolution.
Cementing a Liner into a Stable Cementless Acetabular Shell (2004)

The double-socket technique is a good alternative to acetabular socket removal for suitable candidates who have a well-fixed cementless socket with an inner diameter that is larger than the outer diameter of the cemented liner. This technique preserves acetabular bone stock and permits conversion to alternate bearing surfaces. We believe, however, that removal of a well-fixed acetabular shell or the use of a constrained liner should be strongly considered for patients with a history of hip instability.
ChemInform Abstract: A Method for the Syntheses of Enopyranosides. (2009)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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.
Comparison of the Electrochemical Behaviors of Stoichiometric LiNi[sub 1/3]Co[sub 1/3]Mn[sub 1/3]O[sub 2] and Lithium Excess Li[sub 1.03](Ni[sub 1/3]Co[sub 1/3]Mn[sub 1/3])[sub 0.97]O[sub 2] (2004)

Layered oxide cathodes and have been synthesized by firing appropriate amounts of the coprecipitated hydroxides of Ni, Co, and Mn with lithium hydroxide at 900°C for 24 h and characterized by X-ray diffraction and wet chemical analysis. The lithium excess cathode was found to exhibit better cyclability and rate capability than the stoichiometric cathode up to a cutoff charge voltage of 4.6 V in lithium cells. The better electrochemical performance of the lithium excess cathode is attributed to a smaller volume change occurring during the discharge-charge cycling and a consequent suppression of lattice strain and impedance growth. © 2004 The Electrochemical Society. All rights reserved.
Experimental studies for monitoring water‐level by dipole‐antenna array radar fixed in the subsurface (2005)

ABSTRACT We propose a method for monitoring the movement of moving targets, such as water‐level, at considerable depth, using dipole array‐type radar with the dipoles fixed at various positions in the subsurface. We report on monitoring the water‐level variation in a sand tank over several hours with the dipole‐antenna array. A dipole‐antenna with an optical modulator made of non‐metallic material is used as the receiving antenna element. The antenna has little effect on the electromagnetic field being measured, and the optical modulator does not need electrical power. The basic idea of a radar system fixed in a subsurface is to distribute the dipole‐antennae and to monitor the movement of a target, such as water distribution, over long periods of time, using scattered waves from the target. In order to demonstrate the validity of the radar system, we carried out laboratory experiments. We positioned several receiving dipole‐antennae with the optical modulators, in a small package inside the sand. We raised the height of the water‐level in the sand and measured waves scattered from the boundary between the saturated and unsaturated layers. We analysed the radar signals with the MUSIC algorithm utilizing Method of Moment analysis and monitored the 2D location of a moving scattering centre over several hours. By comparing the water‐level in a vertical borehole with the estimated positions, we found that the estimation is reasonable.
Development of Potential Antitumor Agents. Synthesis and Biological Evaluation of a New Set of Sulfonamide Derivatives as Histone Deacetylase Inhibitors (2003)

A series of sulfonamide hydroxamic acids and anilides have been synthesized and studied as histone deacetylase (HDAC) inhibitors that can induce hyperacetylation of histones in human cancer cells. The inhibition of HDAC activity represents a novel approach for intervening in cell cycle regulation. The lead candidates were screened in a panel of human tumor and normal cell lines. They selectively inhibit proliferation, cause cell cycle blocks, and induce apoptosis in human cancer cells but not in normal cells. The structure-activity relationships, the antiproliferative activity, and the in vivo efficacy are described.
Phase-sensitive silicon-based total internal reflection sensor (2007)

A concept of phase-sensitive Si-based Total Internal Reflection bio- and chemical sensor is presented. The sensor uses the reflection of light from an internal edge of a Si prism, which is in contact with analyte material changing its index of refraction (thickness). Changes of the refractive index are monitored by measuring the differential phase shift between p- and s-polarized components of light reflected from the system. We show that due to a high refractive index of Si, such methodology leads to a high sensitivity and dynamic range of measurements. Furthermore, the Si-based platform offers an easy bioimmobilization step and excellent opportunities for the development of multi-channel microsensors taking advantage of the advanced state of development of Si-based microfabrication technologies.
State of the art in eukaryotic nitrogenase engineering (2017)

Improving the ability of plants and plant-associated organisms to fix and assimilate atmospheric nitrogen has inspired plant biotechnologists for decades, not only to alleviate negative effects on nature from increased use and availability of reactive nitrogen, but also because of apparent economic benefits and opportunities. The combination of recent advances in synthetic biology and increased knowledge about the biochemistry and biosynthesis of the nitrogenase enzyme has made the seemingly remote and for long unreachable dream more possible. In this review, we will discuss strategies how this could be accomplished using biotechnology, with a special focus on recent progress on engineering plants to express its own nitrogenase.
Illustrated Theatre Production Guide (2014)

Illustrated Theatre Production Guide delivers a step-by-step approach to the most prevalent and established theatreproduction practices, focusing on essential issues related to the construction of wooden, fabric, plastic, and metal scenery used on the stage. A must-have resource for both the community theatre worker who must be a jack of all trades and the student who needs to learn the fundamentals on his or her own, it covers the necessities in great detail, without bogging you down. Offering techniques and best-practice methods from an experienced industry expert, it will allow you to create a foundation on which to build a successful and resourceful career behind the scenes in theatre production. This third edition has been completely restructured to more effectively lead you through the basics of stagecraft. Through detailed lessons and hundreds of drawings, author John Holloway offers you solutions to the problems that you’ll face every day in a production, from rigging to knot tying. New to this edition are guides to jobs in theatre, construction documentation, and video projection methods, with expanded information on Thrust Theatres, lighting, audio and video practices. This book is suitable for Stagecraft courses in university Theatre programs, as well as for professional theatre technicians.
Maintenance of Sexual Function with Testosterone in the Gonadotropin-Releasing Hormone-Immunized Hypogonadotropic Infertile Male Rat (1993)

We have previously shown that active immunization against GnRH in the mature male rat can predictably produce hypogonadotropic hypogonadism and azoospermia and, further, that normospermia and normal fertility can be restored by testosterone (T) administration alone. The objective of this study was to explore the hypothesis that GnRH-immunized azoospermic rats could be supplemented with T doses sufficient to restore sexual behavior, but insufficient to support adequate spermatogenesis or to allow restoration of fertility. Adult male rats of proven fertility were immunized against GnRH and supplemented with 2-, 4-, or 8-cm T implants or with empty implants. Eight weeks later, fertility was evaluated; concentrations of serum T, LH, FSH, growth hormone (GH), prolactin (PRL), and thyroid-stimulating hormone (TSH) were determined; sperm number was obtained from the testis; and weights of androgen-dependent organs were measured. GnRH immunization and T supplementation resulted in restoration of organ weights and of fertility in a dose-dependent manner. GnRH immunization with or without T supplementation resulted in the absence of circulating gonadotropins, but had no effect on serum GH, PRL, or TSH levels. Whereas all control animals were fertile, rats that received either empty or 2-cm T implants were completely infertile. Rats that received 4-cm or 8-cm T implants were fertile in 60% and 100% of cases, respectively. Sexual behavior of rats with empty and with 2-cm T implants was compared at 10-18 wk after immunization with GnRH. GnRH-immunized rats given empty implants displayed negligible sexual activity, but those with 2-cm T implants displayed sexual activity equivalent to that of untreated controls despite complete infertility.(ABSTRACT TRUNCATED AT 250 WORDS)
Designing a Hydraulic Continously Variable-Transmission (CVT) for Retrofitting a Rear-Wheel Drive Automobile (2013)

This research shows that an existing rear-wheel drive vehicle may be easily retrofitted with a continuously variable-transmission for the purposes of reducing the overall fuel consumption of the automobile. The retrofit-ability of this transmission is the primary advantage that it exhibits over other continuously variable-transmissions. By retrofitting this vehicle with the transmission components that are shown in this paper, the existing vehicle transmission continues to be used with the exception of the driveshaft which is replaced by the hydraulic continuously variable-transmission itself. Using a standard model for the vehicle dynamics, this paper presents a detailed analysis for the speed ratios of all gears, and shows how to specify the size of the hydraulic pump and motor to insure a safe pressure level of operation. To illustrate the usefulness of this method, an actual transmission is designed for the 1997 Ford Ranger, and the range of adjustability for the transmission is evaluated by seeking to hold the engine speed constant for a ramped speed output of the vehicle. In conclusion, this research shows that the design methodology is valid and that only minor errors in engine speed are observed during low ground velocities for the vehicle.
ChemInform Abstract: (.+‐.)‐CIS‐2‐ACETOXYCYCLOBUTYLTRIMETHYLAMMONIUM IODIDE: A SEMIRIGID ANALOG OF ACETYLCHOLINE (1983)

Abstract Aus dem cis‐Dicarbonsäureanhydrid (I) entsteht gemäß Formelschema das Isocyanat (V), das in die im Titel genannte Verbindung (VI) umgewandelt wird.
Correction of vitamin D insufficiency with the fixed daily combination strontium ranelate 2 g/vitamin D3 1000 IU over 12 months (2012)

peer reviewed
The physics experiment for a laser-driven electron accelerator (1998)

A physics experiment for laser-driven, electron acceleration in a structure-loaded vacuum is being carried out at Stanford University. The experiment is to demonstrate the linear dependence of the electron energy gain on the laser field strength. The accelerator structure, made of dielectric, is semi-open, with dimensions a few thousand times the laser wavelength. The electrons traverse the axis of two crossed laser beams to obtain acceleration within a coherence distance. We predict that the demonstration experiment will produce a single-stage, electron energy gain of 300 keV over a 2.5 mm distance. Ultimately, acceleration gradients of 1 GeV m−1 should be possible.
Prospects for hydrogen storage in graphene (2012)

Hydrogen-based fuel cells are promising solutions for the efficient and clean delivery of electricity. Since hydrogen is an energy carrier, a key step for the development of a reliable hydrogen-based technology requires solving the issue of storage and transport of hydrogen. Several proposals based on the design of advanced materials such as metal hydrides and carbon structures have been made to overcome the limitations of the conventional solution of compressing or liquefying hydrogen in tanks. Nevertheless none of these systems are currently offering the required performances in terms of hydrogen storage capacity and control of adsorption/desorption processes. Therefore the problem of hydrogen storage remains so far unsolved and it continues to represent a significant bottleneck to the advancement and proliferation of fuel cell and hydrogen technologies. Recently, however, several studies on graphene, the one-atom-thick membrane of carbon atoms packed in a honeycomb lattice, have highlighted the potentialities of this material for hydrogen storage and raise new hopes for the development of an efficient solid-state hydrogen storage device. Here we review on-going efforts and studies on functionalized and nanostructured graphene for hydrogen storage and suggest possible developments for efficient storage/release of hydrogen under ambient conditions.
Aero-Acoustical Analysis of the Wake Flow of a Cylinder (2012)

A flowed cylinder creates a tonal noise through the turbulences created in the backlash of the cylinder. The main frequency of this noise can be predicted by analytical method using the Strouhal Number. With numerical CFD calculations the flow can be analysed and via the acoustical analogy (Lighthill, Ffowcs-Williams-Hawkings (FW-H)) the sound generation of the turbulent flow can be calculated. The results of a CFD calculation are compared to the analytical prediction using the Strouhal Number. In addition, these results are compared to measurements with an acoustic camera.
IMPLEMENTATION OF BRAIN ATLAS REGISTRATION BASED ON TALAIRACH COORDINATE SYSTEM (2008)

This article introduces Talairach Daemon brain atlas datas,Talairach coordinate system and the algorithm of brain atlas registration.In the Talairach coordinate system,MRI and Talairach Daemon brain atlas were registered within each region linearly.Through actual clinical application,this algorithm is a kind of feasible method.
Direct Immunohistochemical Evidence of the Existence of 5‐HT1A Autoreceptors on Serotoninergic Neurons in the Midbrain Raphe Nuclei (1990)

Physiological, pharmacological and radioautographic binding studies have suggested the presence of the 5-HT1A autoreceptors on midbrain serotoninergic neurons. The recent production of specific anti-rat 5-HT1A receptor antibodies in rabbits injected with a synthetic peptide has provided a tool to examine this problem directly. Using the immunoperoxidase method to localize the receptor protein, neurons of all the sizes and forms characterizing the neuronal populations in the dorsal and median raphe nuclei were stained. Reaction product was distributed along the neuronal surface, outlining the contours of perikarya and dendrites in a continuous but uneven manner. Intracellular staining was scarce and confined to the perinuclear region. Double immunohistochemical staining using the anti-5-HT1A receptor antibodies and an anti-serotonin (5-HT) antiserum showed that all the 5-HT1A receptor immunoreactive neurons in the dorsal raphe, and the vast majority of them in the median raphe, are serotoninergic neurons. These data provide the first direct demonstration of the existence of 5-HT1A autoreceptors on the perikarya and dendrites of serotoninergic neurons in the anterior raphe nuclei.
Artificial Tactile Sensor Structure for Surface Topography Through Sliding (2018)

Tactile sensors mimicking the human sense of touch have been studied and various technologies for the sensing of external stimuli have been suggested as well. Humans detect certain external stimuli and become aware of related sensations, such as roughness or smoothness. Among the various physical parameters, surface information is the most informative type of perception to impart these sensations onto an electromechanical system, such as an android robot or a smart phone. Here, an array sensor, which uses a sliding method for the precise perception of surface information, such as shapes and structures, is demonstrated. The suggested array sensor design with the excellent dynamic response of a piezoelectric material results in enhanced spatial resolutions with sliding motions and detects variable sliding speeds. A soft material was employed to the sensor to enhance the capability of shape distinction. Color mapping was applied to translate surface patterns into visual images. The reconfigured surface information had high accuracy compared to actual information. The demonstrated sliding speed, pattern detection, and shape detection capabilities as well as the higher spatial resolutions allow the sensor to be utilized as an artificial tactile sensor.
Human intestinal mast cells produce IL-5in vitro upon IgE receptor cross-linking andin vivo in the course of intestinal inflammatory disease (1999)

IL-5, known to be produced by T lymphocytes and eosinophils, is a key regulator of intestinal diseases such as parasitosis or eosinophilic gastroenteritis. Here we examined if mast cells contribute to the IL-5 production in human intestinal mucosa. The number of IL-5-positive lamina propria cells was substantially higher in patients with intestinal inflammatory diseases (5.3 +/- 4.6%, n = 17) compared to healthy controls (0.5 +/- 0.9%, n = 8, p < 0.01). In patients, the IL-5-positive cells were eosinophils (70 +/- 13%) and mast cells (29 +/- 14%), whereas in controls all IL-5-positive cells were eosinophils. IL-5-positive T cells were not detected, likely because they do not store IL-5. In vitro studies with isolated human intestinal mast cells and eosinophils showed that mast cells do not produce IL-5 constitutively, but release high amounts of IL-5 (315 +/- 115 pg/10(6) cells) following IgE receptor cross-linking, compared to activated eosinophils (24 +/- 5 pg/10(6) cells). Inhibitor studies suggest a regulation of IL-5 production at the transcriptional level. In conclusion our data demonstrate that activated mast cells are a potent source of IL-5 in the human intestinal mucosa.
ChemInform Abstract: TOTAL SYNTHESIS OF (.+‐.)‐FILIFOLONE (1980)

Abstract Aus dem Nitril (I) erhält man über mehrere Zwischenstufen das Azidoketon (II), das mit BF 3 über (III) zum bicyclischen Keton (IV) in Form von zwei Stereoisomeren führt.
Antennes hélices quadrifilaires imprimées compactes (2005)

National audience
Enhancing Thermoelectric Energy Recovery via Modulations of Source Temperature for Cyclical Heat Loadings (2006)

Recent improvements in thermoelectric (TE) materials have expanded the potential to use this technology to generate electricity from waste heat in a variety of applications. The performance of a TE generator improves when the temperature difference across the generator is as large as possible given the constraints associated with its application. This paper considers the use of a “thermal switch,” located physically between the heat source and the TE device, to modulate the heat flow through the TE device. A control schema is envisioned which permits heat to flow from the source to the TE device only when the source temperature is near maximum, yielding a higher time-averaged temperature drop across the TE and therefore a higher efficiency. A numerical model is used to evaluate the benefits of an active thermal switch in series with a TE generator relative to a baseline case defined by the absence of a thermal switch for both time-varying and constant heat inputs. The results demonstrate that modulating the heat flow through the TE device and maintaining the source temperature at a near constant maximal value is capable of improving the time-averaged TE device energy recovery efficiency. For some conditions, improved efficiencies of more than five times are realized. The requisite physical conditions necessary for achieving these improvements are also identified.