gebhart/patrepeval huggingface dataset:
A compact IFA-based dual-band planar antenna for WiFi USB dongles (2014)

WiFi USB dongles still draw some attention in the scope of wireless LAN device technologies, especially regarding the design of the radiator, which must be compact. The present work proposes a compact planar IFA-based antenna for a dualband USB WiFi dongle. The design of the antenna was numerically assisted using the antenna analysis software Empire XCcel <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">TM</sup> . Experimental validation was achieved assembling and testing a prototype under practical conditions such as the influence of the dongle case, and the effect of plugging the USB stick in different positions alongside a typical laptop. Overall, the antenna complied well with the design constraints, notably regarding the good frequency stability of the impedance match.
Energy and Latency Aware Resource Management for Solar Powered Cellular Networks (2020)

There is an increasing need to power cellular base stations (BSs) using solar energy in many parts of the globe. This is primarily because of the high cost of running these base stations on traditional power sources such as diesel due to a lack of reliable grid availability in those areas. Apart from the high cost, increasing diesel consumption also causes harm to the environment due to its increasing global carbon footprint. Using solar energy powered base stations is a highly promising solution to address these issues. One of the main areas of concern for solar powered cellular networks is to precisely manage the resources, namely, the available spectrum and energy so as to avoid power outages and to maintain an acceptable QoS for the end users. This article gives an overview of the challenges faced in resource management for solar powered base stations and presents state-of-the-art resource management strategies for both grid-connected and off-grid solar powered base stations.
Brainstem injury in motor vehicle crashes (2017)

The risk for brainstem injury in belted occupants has remained essentially constant over 20 years, whereas the risk for MAIS 4+F injury has declined 38.3%. The prevention of brainstem injuries must address the extreme speed of collisions and weight mismatches that overwhelm structures, seat belts, frontal airbags, side airbags, and curtains in modern vehicles.
Identification of target genes regulated by homeotic proteins in Drosophila melanogaster through genetic selection of Ultrabithorax protein-binding sites in yeast. (1995)

A method based on the transcriptional activation of a selectable reporter in yeast cells was used to identify genes regulated by the Ultrabithorax homeoproteins in Drosophila melanogaster. Fifty-three DNA fragments that can mediate activation by UBX isoform Ia in this test were recovered after screening 15% of the Drosophila genome. Half of these fragments represent single-copy sequences in the genome. Six single-copy fragments were investigated in detail, and each was found to reside near a transcription unit whose expression in the embryo is segmentally modulated as expected for targets of homoeotic genes. Four of these putative target genes are expressed in patterns that suggest roles in the development of regional specializations within mesoderm derivatives; in three cases these expression patterns depend on Ultrabithorax function. Extrapolation from this pilot study indicates that 85-170 candidate target genes can be identified by screening the entire Drosophila genome with UBX isoform Ia. With appropriate modifications, this approach should be applicable to other transcriptional regulators in diverse organisms.
Sophisticated High-accuracy Feedwater Flowmeter for Light Water Reactors (2003)

As nuclear power plants are highly aging, readings of flowmeters for reactor feedwater systems drift due to the changes of flow profiles. The causes of those deviations are affected by the change of wall roughness of inner surface of pipings. To cope with those concems, time-of-flight ultrasonic flowmeters are being introduced to nuclear power plants in the United States. However, flow profile factors (PFs), which adjust measurand to real flow rates, also strongly depend on flow profiles. To determine profile factors for actual power plants, manufactures of flowmeters usually conduct factory calibration tests under ambient flow conditions. Indeed, flow measurements with high accuracy for reactor feedwater require them to conduct calibration tests under real conditions, such as liquid conditions and piping layouts. These make it inevitable in quite a few measuring errors for large pipings in power plants. Therefore, the measurement accuracy of flow rate by conventional time-of-flight ultrasonic flowmeters is questionable. This paper discussed sophisticated high-accuracy feedwater flowmeter which directly measures the flow profile of reactor feedwater.
Enantioselective Catalytic Transfer‐Hydrogenation of α,β‐Unsaturated Carboxylic Acids with Triethylammonium Formate (1988)

Transfer hydrogenation with triethylammonium formate (= formic acid + NEt3) has proven suitable as a method for hydrogenation without molecular hydrogen. In the catalytic hydrogenation of acetylaminocinnamic acid and itaconic acid in the presence of rhodium complexes containing optically active ligands such as (−)-diop, enantiomeric excesses are achieved which equal or even surpass those of hydrogenation with molecular hydrogen.
An approach to posture control of free-falling twin bodies using differential flatness (2010)

Often, electronics and packages must be prevented from damages resulting from awkward falls. The goal of this paper is to explore how actuators and control can be used to reorient bodies during free fall. It is well known that motion of a free-falling body or a set of interconnected bodies is characterized by the principle of conservation of angular momentum. The governing angular momentum equations are nonholonomic, i.e., are non-integrable rate equations. In this paper, we assume that the falling system consists of twin bodies interconnected by a hinge joint. One of the twin bodies is designated as the primary body which needs to be reoriented during fall. The secondary body is connected to the primary body by a hinge joint, similar to a protective cover on a cell phone. The relative angle between the twin bodies is actively controlled. In addition, two rotors are mounted on the primary body with axes orthogonal to the axis of the hinge between the twin bodies. The goal of this study is to use the framework of differential flatness to compute trajectories for the hinge joint and the two rotors so that the twin bodies achieve prespecified orientations at the end of the free fall.
New approach to a constant beamwidth transducer (1977)

The theory of a broadband constant beamwidth transducer which is to be used primarily as a projector is presented. The transducer is a spherical cap of arbitrary half-angle α shaded so that the normal velocity is given by ur = u0Pv(cosθ), where Pv is the Legendre function whose root of smallest angle occurs at θ = α. The required value for v can be obtained to within 1% for α ⩽ 1 rad from the approximation v ≃ 0.5(4.81/α − 1). The transducer is shown to have uniform acoustic loading, extremely low side lobes and an essentially constant beam pattern for all frequencies above a certain cutoff frequency. Under piezoelectric drive the transducer is shown to have a flat transmitting current response over a broad band.
Green Routes for Synthesis of Zeolites (2013)

ADVERTISEMENT RETURN TO ISSUEPREVReviewGreen Routes for Synthesis of ZeolitesXiangju Meng and Feng-Shou Xiao*View Author Information Department of Chemistry, Zhejiang University (XiXi Campus), Hangzhou 310028, China*E-mail [email protected]Cite this: Chem. Rev. 2014, 114, 2, 1521–1543Publication Date (Web):November 4, 2013Publication History Received7 March 2013Published online4 November 2013Published inissue 22 January 2014https://pubs.acs.org/doi/10.1021/cr4001513https://doi.org/10.1021/cr4001513review-articleACS PublicationsCopyright © 2013 American Chemical SocietyRequest reuse permissionsArticle Views17119Altmetric-Citations503LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose SUBJECTS:Chemical synthesis,Crystallization,Genetics,Solvents,Zeolites Get e-Alerts
Data-Driven Wind Generation Admissibility Assessment of Integrated Electric-Heat Systems: A Dynamic Convex Hull-Based Approach (2020)

This paper proposes a data-driven approach to assess the wind generation accommodation capability of the integrated electric-heat system. The overall assessment model is constructed based on the two-stage robust decision-making framework, where the uncertainty of wind generation is described by a convex hull formed by historical data. To take a balance between modeling accuracy and computation tractability, the convex hull is firstly approximated by the intersection of a set of low-dimensional convex hulls, named the approximated convex hull, and then the approximated convex hull based uncertainty set is further simplified by the vertex coefficient discretization treatment. A uniform-compression-expansion scheme for the identified worst-case data samples is derived to realize the evolution of the dynamic convex hull as well as to bridge the gap between the first- and the second-stage problems. A modified column-and-constraint generation algorithm is devised to solve the overall model. Simulation results on two test systems verify the effectiveness and the scalability of the proposed method.
Quantum control beyond the uncertainty limit of position and momentum using a Sagnac interferometer (2020)

To realize optimal simultaneous control of transverse position and momentum, we have constructed a Sagnac interferometer and evaluated the interference between spatial modes with extremely different profiles. The results are consistent with theoretical expectations.
Porcine parvovirus removal using trimer and biased hexamer peptides (2011)

Assuring the microbiological safety of biological therapeutics remains an important concern. Our group has recently reported small trimeric peptides that have the ability to bind and remove a model nonenveloped virus, porcine parvovirus (PPV), from complex solutions containing human blood plasma. In an effort to improve the removal efficiency of these small peptides, we created a biased library of hexamer peptides that contains two previously reported trimeric peptides designated WRW and KYY. This library was screened and several hexamer peptides were discovered that also removed PPV from solution, but there was no marked improvement in removal efficiency when compared to the trimeric peptides. Based on simulated docking experiments, it appeared that hexamer peptide binding is dictated more by secondary structure, whereas the binding of trimeric peptides is dominated by charge and hydrophobicity. This study demonstrates that trimeric and hexameric peptides may have different, matrix-specific roles to play in virus removal applications. In general, the hexamer ligand may perform better for binding of specific viruses, whereas the trimer ligand may have more broadly reactive virus-binding properties.
Type III Protein Secretion in Yersinia Species (2002)

▪ Abstract The type III mechanism of protein secretion is a pathogenic strategy shared by a number of gram-negative pathogens of plants and animals that has evolved in order to inject virulence proteins into the cytosol of target eukaryotic cells. The pathogens of the Yersinia genus represent a model system where much progress has been made in understanding this secretion pathway. Herein, we review what has been recently learned in yersiniae about the various environmental signals that induce type III secretion, how the synthesis of secretion substrates is regulated, and how such a diverse group of proteins is recognized as a substrate for secretion.
Detection of low prevalence somatic mutations in solid tumors with ultra-deep targeted sequencing (2011)

Ultra-deep targeted sequencing (UDT-Seq) can identify subclonal somatic mutations in tumor samples. Early assays' limited breadth and depth restrict their clinical utility. Here, we target 71 kb of mutational hotspots in 42 cancer genes. We present novel methods enhancing both laboratory workflow and mutation detection. We evaluate UDT-Seq true sensitivity and specificity (> 94% and > 99%, respectively) for low prevalence mutations in a mixing experiment and demonstrate its utility using six tumor samples. With an improved performance when run on the Illumina Miseq, the UDT-Seq assay is well suited for clinical applications to guide therapy and study clonal selection in heterogeneous samples.
Robust Policy Search for an Agile Ground Vehicle Under Perception Uncertainty (2021)

Learning robust policies for robotic systems operating in presence of uncertainty is a challenging task. For safe navigation, in addition to the natural stochasticity of the environment and vehicle dynamics, the perception uncertainty associated with dynamic entities, e.g. pedestrians, must be accounted for during motion planning. To this end, we construct an algorithm with built-in robustness to uncertainty by directly minimizing an upper confidence bound on the expected cost of trajectories instead of employing a standard approach based on minimizing the expected cost itself. Perception uncertainty is incorporated into the policy search framework by predicting each pedestrian’s intent belief and propagating their state distribution in time using closed-loop goal-directed dynamics. We train the policy in simulation and show that it could be transferred to an agile ground vehicle for successful autonomous robot navigation in presence of pedestrians with perception uncertainty. We further show the superior performance of this policy over a policy that does not consider pedestrian intent and perception uncertainty.
GENETICS OF CARNEY COMPLEX AND RELATED FAMILIAL LENTIGINOSES, AND OTHER MULTIPLE TUMOR SYNDROMES (2000)

Carney complex is a multiple endocrine neoplasia (MEN) syndrome that affects the adrenal cortex, the pituitary and thyroid glands, and the. gonads. The complex is also associated with skin and mucosa pigmentation abnormalities and myxoid and other neoplasms of mesenchymal and neural crest origin. Thus, this syndrome also belongs to another group of genetic disorders, the lentiginoses (or lentigenoses), which include the Peutz-Jeghers, LEOPARD, arterial dissections and lentiginosis, and Laugier-Hunziker syndromes, Cowden disease and Ruvalcaba-Myhre-Smith (Bannayan-Zonana) syndrome and the centrofacial, benign patterned and segmental lentiginoses, all of which can be associated with a variety of developmental defects. The inheritance of Carney complex, just like that of the other MENs and the lentiginoses, is autosomal dominant. Genetic loci or genes have been identified for Carney complex, Peutz-Jeghers and Ruvalcaba-Myhre-Smith syndromes, but not for other lentiginoses. Elucidation of the molecular defects responsible for these disorders is expected to shed light on aspects of early neural crest differentiation, the regulation of pigmentation, the development of autonomous endocrine function, and endocrine and nonendocrine tumorigenesis.
Pattern recognition with surface EMG signal based wavelet transformation (2012)

EMG based input device is a natural means of human computer interface (HCI) because the electrical activity induced by the human's arm muscle movements can be interpreted and transformed into computer's control commands. In this paper, we describe an approach for classifying electromyography (EMG) signals using a multilayer perceptron neural network (MLP) and Bayesian classifier (BC) with the wavelet transformation technique for feature selection to discriminate 6 classes of motions to control a mouse. Wavelet Transformation (WT) was applied to raw EMG data and in order to decrease the dimension of the feature sets, principle component analysis (PCA) and sequential forward selection (SFS) were utilized.
Formation and reactivity of new Nicholas–Ferrier pyranosidic cations: novel access to oxepanes via a 1,6-hydride shift/cyclization sequence (2010)

Pyranosidic allylic (Ferrier) cations that share dicobalt hexacarbonyl propargyl (Nicholas) stabilization at C-1 display a remarkable reactivity leading to either substituted oxepanes or 3-C-branched pyranosides, depending on the substituent at O-6.
ChemInform Abstract: Synthesis of Indolizidines by the 1,3‐Dipolar Cycloaddition of Azides with Methyl Methylenecyclopropanes Followed by Cyclopropylimine Rearrangement. (1991)

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.
ChemInform Abstract: Pinacol Homocoupling of (S)‐2‐(N‐(Benzyloxycarbonyl)amino) Aldehydes by (V2Cl3(THF)6)2(Zn2Cl6). Synthesis of C2‐Symmetric (1S,2R,3R,4S)‐1,4‐ Diamino 2,3‐Diols. (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.
Cover Picture: Modulators of the Kynurenine Pathway of Tryptophan Metabolism: Synthesis and Preliminary Biological Evaluation of (S)‐4‐(Ethylsulfonyl)benzoylalanine, a Potent and Selective Kynurenine Aminotransferase II (KAT II) Inhibitor (ChemMedChem 5/2006) (2006)

The cover picture shows one branch of the kynurenine pathway of tryptophan metabolism, which is mainly localized in astrocytes. One key metabolite, kynurenic acid (KYNA), is transported in the extracellular space, where it modulates synaptically localized α7 nicotinic acetylcholine receptors and NMDA receptors. The inset shows the active site of kynurenine aminotransferase II (KAT II), the enzyme that synthesizes KYNA in the CNS, and the structure of ( S )‐4‐(ethylsulfonyl)benzoylalanine, a potent and selective KAT II inhibitor. Selective inhibition of KAT II may have a fundamental role in the understanding of CNS processes related to cognitive function. For more details, see the Communication by R. Pellicciari et al. on p. 528 ff. (Daniele Bellocchi is acknowledged for the cover image.)
Disentangling Photochromism and Electrochromism by Blocking Hole Transfer at the Electrolyte Interface (2016)

ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTDisentangling Photochromism and Electrochromism by Blocking Hole Transfer at the Electrolyte InterfaceYang Wang†, Jongwook Kim†, Zhengning Gao‡, Omid Zandi†, Sungyeon Heo†, Parag Banerjee‡, and Delia J. Milliron*†View Author Information† McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712-1589, United States‡ Department of Mechanical Engineering and Materials Science, Washington University, St. Louis, Missouri 63130, United States*(D.J.M.) E-mail: [email protected]Cite this: Chem. Mater. 2016, 28, 20, 7198–7202Publication Date (Web):October 13, 2016Publication History Received7 September 2016Revised7 October 2016Published online13 October 2016Published inissue 25 October 2016https://pubs.acs.org/doi/10.1021/acs.chemmater.6b03793https://doi.org/10.1021/acs.chemmater.6b03793rapid-communicationACS PublicationsCopyright © 2016 American Chemical SocietyRequest reuse permissionsArticle Views1797Altmetric-Citations23LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-AlertscloseSupporting Info (1)»Supporting Information Supporting Information SUBJECTS:Coating materials,Electrodes,Electrolytes,Layers,Oxides Get e-Alerts
Preparation of HTLcs from Magnesium Desulfurization Residues and their Catalytic Performance in Degradation of Waste Polyester (2016)

To recycle the solid wastes, the hydrotalcite-like compounds (HTLcs) were prepared from the magnesia flue gas desulfurization residues (MFGDR). The HTLcs as prepared and the products from degradation of Poly (ethylene terephthalate) (PET) were characterized by thermogravimetric analysis (TG) , x-ray powder diffraction (XRD) , fourier transform infrared spectrometer (FTIR) and differential scanning calorimetry (DSC) methods. Effects of calcining temperature and alkaline of solution on the structure and performance of HTLcs were studied. The main product of alcoholysis of PET was bis-hydroxyethyl terephthalate (BHET). The catalyst shows a potential application in solid waste treatment and recycle.