gebhart/patrepeval huggingface dataset:
Dual-Band High Impedance Surface With Mushroom-Type Cells Loaded by Symmetric Meandered Slots (2012)

A novel dual-band high impedance surface (HIS) with mushroom-type cells loaded by symmetric meandered slots is proposed. Two kinds of band-gap features: one for surface wave suppression and the other for high-impedance in-phase reflectivity, are realized for dual-band operation simultaneously. The characteristics of the meandering slotted high impedance surface (MS-HIS) are investigated by using finite-element full-wave analysis in this paper, which show that the two band gaps are separately produced by cross slots and meandering slots. It is revealed that the surface wave suppression band gaps can be used to reduce the backward radiations and prohibit the mutual couplings between two E-plane coupled microstrip antennas at two operational frequencies. When a plane wave obliquely illuminates the MS-HIS, the unique feature of triple resonant behavior is observed. Furthermore, a dual-band radar absorbing material (RAM) based on the MS-HIS is proposed. The absorbing performance is verified by simulations and waveguide measurements using C-band WR197 and X-band WR90 waveguides.
2A2-L09 Quad-rotor Flying along the Pipe(Aerial Robot and Mechatronics(2)) (2012)

The authors aim at developing a search system by using a Quad-rotor. Fire and leakage accident occur many times in chemical plants and oil plants etc because of pipe line troubles. In order to solve this problem, it is necessary to check pipes. In this paper, the authors proposed a method of Quad-rotor flying along a pipe. We set a line which is a constant distance parallel with the pipe line as target line. The Quad-rotor can follow the target line by moving a target point aloneg the target line. Position control method proposed by Michael is used for the purpose. We have implemented the program on the dynamics simulator V-REP, and confirmed that the Quad-rotor fly along the pipe line using the proposed method.
Base-Catalyzed Ethanolysis of α-Diethoxyphosphoryl-γ-lactones: A Facile Synthesis of Cyclopropanecarboxylates (2005)

A range of alkyl- and alkenylcyclopropanecarboxylic acid ethyl esters has been stereoselectively prepared by treatment of substituted α-diethoxyphosphoryl-γ-lactones with sodium ethoxide in tetrahydrofuran.
Nontraumatic aortic blood flow sensing by use of an ultrasonic esophageal probe (1975)

The measurement of blood velocity fields, volume flow, and arterial wall motion in the descending thoracic aorta provides essential hemodynamic information for both research and clinical diagnosis. The close proximity of the esophagus to the aorta in the dog makes it possible to obtain such data nonsurgically using an ultrasonic esophageal probe; however, the accuracy of such a probe is limited if the angle between the sound beam and the flow axis, known as the Doppler angle, is not precisely known. By use of a pulsed Doppler velocity meter (PUDVM) and a triangulation procedure, accurate empirical measurement of the Doppler angle has been obtained, allowing quantification of blood velocity scans across the aorta. Volume flow is obtained by integration of blood velocity profiles and arterial wall motion is measured with an ultrasonic echo tracking device. Accuracy of the probe was substantiated by comparison with ultrasonic and electromagnetic implanted flow cuff measurements. Use of the probe in measurement of blood velocity, volume flow and arterial wall motion at various locations along the 8- and 10-cm length of the descending thoracic aorta in adult beagle dogs is detailed. The simplicity, accuracy, and nontraumatic aspect of the technique should allow increasing use of such a probe in numerous research and clinical applications.
The ALMA Telescope Control System (2005)

The Atacama Large Millimeter Array (ALMA) is a joint project between North America, Europe and Japan. ALMA is an aperture synthesis radio telescope consisting of 50 12-meter antennas located at an elevation of 5,000 meters in Llano de Chajnantor, Chile. These antennas will operate at frequencies ranging from 31.3 GHz to 950 GHz. The antennas can be moved and placed in different configurations, with baselines between the antennas varying from 150 meters to 20 km. The 50 antennas are supplemented by sixteen additional ones, known as the ALMA Compact Array (ACA): 12 7-meter antennas and 4 12-meter antennas. The ALMA control system will consist of over 70 computers separated by distances of over 20 km. Two aspects of the system are apparent: its distributed nature and its need to accurately synchronize events across many computers separated by large distances. In this paper we describe key features of the architecture of the ALMA Control System, focusing on its properties as a distributed system and on the mechanisms employed to achieve its time synchronization goals. This control system is a distributed system that uses the ALMA Common Software (ACS) as a middleware system layered on top of CORBA. The architecture of the control system extensively
Delivery of neurturin by AAV2 (CERE‐120)‐mediated gene transfer provides structural and functional neuroprotection and neurorestoration in MPTP‐treated monkeys (2006)

These data demonstrate that AAV2-NTN (CERE-120) can preserve function and anatomy in degenerating nigrostriatal neurons and are supportive of ongoing clinical tests in Parkinson's disease patients.
Surface‐Enhanced Raman Spectroscopy: Concepts and Chemical Applications (2014)

Surface-enhanced Raman scattering (SERS) has become a mature vibrational spectroscopic technique during the last decades and the number of applications in the chemical, material, and in particular life sciences is rapidly increasing. This Review explains the basic theory of SERS in a brief tutorial and-based on original results from recent research-summarizes fundamental aspects necessary for understanding SERS and provides examples for the preparation of plasmonic nanostructures for SERS. Chemical applications of SERS are the centerpiece of this Review. They cover a broad range of topics such as catalysis and spectroelectrochemistry, single-molecule detection, and (bio)analytical chemistry.
Remote sensing of the sea surface using one‐ and two‐frequency microwave techniques (1980)

The capabilities of one‐ and two‐frequency, coherent, pulsed, microwave radars for the remote sensing of the sea surface have been investigated both theoretically and experimentally. A combined instrument recording data independently in both modes is a compact and versatile probe for the study of two‐scale wave systems. An expression for the output of a dual‐frequency microwave system operated at intermediate grazing angles has been developed and quantitatively confirmed. This expression predicts that, for large illuminated areas, the dual‐frequency signal/background ratio will be inversely proportional to the area of the scattering cell, a dependence which has been confirmed experimentally. Furthermore, it has been shown that if a scattering cell of radial dimension small in comparison with the dominant ocean wavelength and an azimuthal dimension large in comparison with the dominant ocean wavelength is used, frequency demodulation of coherent single‐frequency microwave backscatter yields a signal proportional to the orbital velocity of those long waves which are propagating radially. This directional discrimination has been verified experimentally, and directional waveheight spectra have been shown to compare favorably with those measured by an array of pressure sensors. Finally, a double‐modulation technique has been conceived and tested experimentally. This technique allows measurement of interactions between waves with lengths of a few meters and much longer waves. Representative modulation transfer functions for these wave‐wave interactions have been obtained by using the technique.
A Real-Time Microprocessor-Based System for Engine Deficiency Analysis (1983)

The main objective of this work is to develop an on-board microprocessor-based device to detect faults in reciprocating combustion engines. This paper discusses two methods of analysis that have been utilized for fault detection. The first method requires the computation of the Fourier transform, while the second is based on the autocorrelation function. Both the methods provide encouraging results for the few cases that have been studied so far.
The People in a Girl’s Life Martha Kate Downey The People in a Girl’s Life and Kate NoelleDowney Jessica Kingsley 130 £11.95 1843107074 1843107074 (2003)

This book is an easy to read text that provides the reader with some insight into the world of both a girl who has autism and the complexities of being her mum. It is written in the form of a dialogue between mother and daughter and reflects many of those questions presented to all parents by their children. In this context it may also be a useful resource for bringing up any children, through reflection this also indicates the similarities as well as differences of Kate’s needs as she grows up in a world that does not always make sense.
Growth Differentiation Factor 5 (GDF5) Core Promoter Polymorphism Is Not Associated with Susceptibility to Osteoarthritis of the Knee in the Korean Population (2010)

Background : Osteoarthritis (OA) is a common disease characterized by degenerating joint cartilage in the knee, hip, and hand. A functional single nucleotide polymorphism (SNP) +104-T/C; rs143383 in the 5 untranslated region of the growth differentiation factor 5 (GDF5) gene was recently associated with susceptibility to OA in the Japanese and Chinese populations. Methods : To investigate whether this association is present in the Korean population, the frequency of the polymorphism was investigated in 276 patients with knee OA and 298 healthy subjects as controls. Polymorphism analysis was performed by amplifying the core promoter region of the GDF5 gene and digesting it with the BsiEI restriction enzyme. Results : The frequency of the TT, CT, and CC genotypes was 54.3% (150/276), 41.7% (115/276), and 4.0% (11/276), respectively, in patients with OA, and 53.4% (159/298), 37.9% (113/298), and 8.7% (26/298), respectively, in healthy controls. No significant differences in genotypic or allelic frequencies of the +104T/C SNP of the GDF5 gene were observed between patients with OA and controls. Also, no significant differences in allelic and genotypic frequencies were found when the individuals were stratified by age and gender. Conclusions : The results suggest that the +104T/C; rs143383 GDF5 core promoter polymorphism is not a risk factor for OA in the Korean population.
RNA 3'-terminal phosphate cyclase activity and RNA ligation in HeLa cell extract (1983)

HeLa cell extract contains RNA ligase activity that converts linear polyribonucleotides to covalently closed circles. RNA substrates containing 2',3'-cyclic phosphate and 5'-hydroxyl termini are circularized by formation of a normal 3',5' phosphodiester bond. This activity differs from a previously described wheat germ RNA ligase which circularizes molecules with 2',3'-cyclic and 5' phosphate ends by a 2'-phosphomonester, 3',5'-phosphodiester linkage (Konarska et al., Nature 293, 112-116, 1981; Proc. Natl. Acad. Sci. USA 79, 1474-1478, 1982). The HeLa cell ligase can also utilize molecules with 3'-phosphate ends. However, in this case ligation is preceded by an ATP-dependent conversion of the 3'-terminal phosphate to the 2',3' cyclic form by a novel activity, RNA 3'-terminal phosphate cyclase. Both RNA ligase and RNA 3'-terminal phosphate cyclase activities are also present in extract of Xenopus oocyte nuclei, consistent with a role in RNA processing.
The system view (1983)

Analysis of spacecraft to ground communications link performance and a description of the Deep Space Network system is provided. Due to the tremendous distances involved in communicating between the spacecraft at the edge of our solar system and Earth, communications link performance is stretched to the limit of theoretical predictions. This is required in order to return the maximum amount of data possible during critical events such as planetary flybys. The link analysis provides a basis for the initial link design before spacecraft launch and performance prediction and monitoring during spacecraft flight. Additionally, it indicates what performance upgrades are required for mission extensions and new missions. Performance is improved through the use of a larger antenna collecting area, greater transmitter power, lower receiving system noise temperature and more sophisticated data coding schemes. The performance of the Deep Space Station configuration which serves as the ground portion of the communications link is assessed.
Cyclooxygenase‐2 modulates cellular growth and promotes tumorigenesis (2003)

Cyclooxygenase (COX)-2 and the prostaglandins resulting from its enzymatic activity have been shown to play a role in modulating cell growth and development of human neoplasia. Evidence includes a direct relationship between COX-2 expression and cancer incidence in humans and animal models, increased tumorigenesis after genetic manipulation of COX-2, and significant anti-tumor properties of non-steroidal anti-inflammatory drugs in animal models and in some human cancers. Recent data showed that COX-2 and the derived prostaglandins are involved in control of cellular growth, apoptosis, and signal through a group of nuclear receptors named peroxisome proliferator-activated receptors (PPARs). In this article we will review some of the findings suggesting that COX-2 is involved in multiple cellular mechanisms that lead to tumorigenesis.
Optoelectronic Thz Impulse Ranging (2000)

Abstract : We have used our THz impulse range to measure the late time response of targets following excitation by a short THz impulse: (1) Our measurements on dielectric cylinders showed unprecedented agreement with theory in both the time and frequency domains and enabled the first direct experimental comparison for the predicted surface wave with exact numerical calculations as well a simple geometrical optics model. (2) Our measurements on dielectric spheres had sufficiently high temporal resolution to permit the surface wave contribution to the total impulse response to be isolated. These results enabled the first direct experimental comparison for the predicted surface wave with numerical calculations using the Mie theory as well as the surface wave approximation of van de Hulst. (3) We have performed a direct observation of the Gouy effect through THz impulse scattering from cylindrical and spherical targets; the Gouy phase shift through a one-axis (cylindrical) focus of (lamba)/2 in comparison with a two-axis (spherical) focus of it is required to interpret our results. (4) Using similar THz optoelectronic techniques, we have characterized the response from an impulsively-excited, micron-sized dipole antenna on a dielectric surface. These THz experimental results scale and compare well with a previous GHz geo-radar theoretical calculation of a horizontal dipole on a dielectric. (5) For the first time we have used quasi-optical methods to efficiently couple freely propagating, subpsec pulses of THz radiation into sub-mm circular metal tubes (waveguides), single crystal fibers and plastic ribbon waveguides and to consequently measure the transmitted pulses from these waveguides.
Adsorption of CO<sub>2</sub> on Microporous Materials. 1. On Activated Carbon and Silica Gel (1997)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAdsorption of CO2 on Microporous Materials. 1. On Activated Carbon and Silica GelKarl Berlier and Marc FrèreView Author Information Service de Thermodynamique, Faculté Polytechnique de Mons, Bd Dolez 31, B-7000 Mons, BelgiumCite this: J. Chem. Eng. Data 1997, 42, 3, 533–537Publication Date (Web):May 12, 1997Publication History Received1 October 1996Published online12 May 1997Published inissue 1 May 1997https://pubs.acs.org/doi/10.1021/je9603180https://doi.org/10.1021/je9603180research-articleACS PublicationsCopyright © 1997 American Chemical SocietyRequest reuse permissionsArticle Views887Altmetric-Citations29LEARN 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:Adsorption,Adsorption isotherms,Carbon,Porous materials,Silica Get e-Alerts
The phase transition sequence and the location of the morphotropic phase boundary region in (1   x)[Pb (Mg<sub>1/3</sub>Nb<sub>2/3</sub>)O<sub>3</sub>] xPbTiO<sub>3</sub>single crystal (2003)

Piezoelectric constant and temperature-dependent dielectric constant measurements have been performed on ⟨110⟩-oriented (1 − x)Pb (Mg1/3 Nb2/3)O3–xPbTiO3 crystals with different compositions under different poling fields. The width of the morphotropic phase boundary region (0.30 < x < 0.35) is determined on the basis of two abnormal regions of the dielectric and piezoelectric properties. An irreversible rhombohedral–monoclinic MA–monoclinic MC–tetragonal phase transition sequence was observed directly from the dielectric constant versus temperature results for ⟨001⟩-poled rhombohedral crystals with compositions near the rhombohedral–monoclinic phase boundary. The structure of the morphotropic phase is shown to be monoclinic with space group Pm.
Cold rolling on textured rollers to obtain regulated surface roughness (2011)

At OAO MMK, a new production technology has been developed for cold-rolled steel sheet with regulated surface roughness, used in the auto industry. This technology relies on regulation of the tension in the cold-rolling mills, a special textured barrel surface of the working rollers, new roller profiles, and the use of a wetting liquid in the temper mill.
Proposal for Frame Structure of Optical Channel Transport Unit Employing LDPC Codes for 100 Gb/s FEC (2009)

We propose an OTU4V frame structure for 100 Gb/s transport networks using concatenated LDPC(9216,7936) + RS(992,956) codes with soft decision decoding. Example implementation for transponders and the expected performance is discussed.
Mismatch-, MutS-, MutL-, and Helicase II-dependent Unwinding from the Single-strand Break of an Incised Heteroduplex (1998)

Escherichia coli MutS, MutL, and DNA helicase II are sufficient to initiate mismatch-dependent unwinding of an incised heteroduplex (Yamaguchi, M., Dao, V., and Modrich, P. (1998) J. Biol. Chem., 273, 9197-9201). We have studied unwinding of 6.4-kilobase circular G-T heteroduplexes that contain a single-strand incision, 808 base pairs 5' to the mismatch or 1023 base pairs 3' to the mispair as viewed along the shorter path between the two DNA sites. Unwinding of both substrates in the presence of MutS, MutL, DNA helicase II, and single-stranded DNA binding protein was mismatch-dependent and initiated at the single-strand break. Although unwinding occurred in both directions from the strand break, it was biased toward the shorter path linking the strand break and the mispair. MutS and MutL are thus sufficient to coordinate mismatch recognition to the orientation-dependent activation of helicase II unwinding at a single-strand break located a kilobase from the mispair.
Influence of Crosslink Density and Stiffness on Mechanical Properties of Type I Collagen Gel (2015)

The mechanical properties of type I collagen gel vary due to different polymerization parameters. In this work, the role of crosslinks in terms of density and stiffness on the macroscopic behavior of collagen gel were investigated through computational modeling. The collagen fiber network was developed in a representative volume element, which used the inter-fiber spacing to regulate the crosslink density. The obtained tensile behavior of collagen gel was validated against published experimental data. Results suggest that the cross-linked fiber alignment dominated the strain stiffening effect of the collagen gel. In addition, the gel stiffness was enhanced approximately 40 times as the crosslink density doubled. The non-affine deformation was reduced with the increased crosslink density. A positive bilinear correlation between the crosslink density and gel stiffness was obtained. On the other hand, the crosslink stiffness had much less impact on the gel stiffness. This work could enhance our understanding of collagen gel mechanics and shed lights on designing future clinical relevant biomaterials with better control of polymerization parameters.
Transparent Nd:YAG Ceramics Fabricated Using Nanosized γ‐Alumina and Yttria Powders (2008)

Neodymium (Nd):Y 3 Al 5 O 12 (YAG) ceramics of excellent transparency have been fabricated by solid‐reactive sintering, using nanosized γ‐Al 2 O 3 and Y 2 O 3 powders as the starting materials. Reaction sequences and sintering behaviors of the powder mixture were characterized by X‐ray diffractometry and dilatometry. One feature of the solid reactions involving γ‐Al 2 O 3 is the occurrence of hexagonal YAlO 3 , which is unstable and transforms to perovskite YAlO 3 (YAP) upon further heating. Because of the high reactivities of the starting nanopowders, a complete conversion of the powder mixture to YAG has been achieved by heating at 1300°C for 4 h, via Y 4 Al 2 O 9 , hexagonal YAlO 3 , and YAP phases. In‐line transmittances of the 1.5 at.% Nd:YAG ceramics (doped with 0.5 wt% of tetraethyl orthosilicate) at 700 nm are 81.0% and 65.7% after vacuum sintering at 1700° and 1600°C for 5 h, respectively.
Reversal of preexisting hyperglycemia in diabetic mice by acute deletion of the <i>Men1</i> gene (2010)

A hallmark of diabetes is an absolute or relative reduction in the number of functional β cells. Therapies that could increase the number of endogenous β cells under diabetic conditions would be desirable. Prevalent gene targeting mouse models for assessing β-cell proliferation and diabetes pathogenesis only address whether deletion of a gene prevents the development of diabetes. Models testing whether acute excision of a single gene can ameliorate or reverse preexisting hyperglycemia in established diabetes remain to be explored, which could directly validate the effect of gene excision on treating diabetes. Here, we report that acute and temporally controlled excision of the Men1 gene, which encodes menin, ameliorated preexisting hyperglycemia in streptozotocin-treated mice. Moreover, Men1 excision also improved the preexisting hyperglycemia and glucose intolerance in genetic db/db diabetic mice. Furthermore, acute Men1 excision reversed preexisting glucose intolerance in high-fat diet-fed mice. Men1 excision improved glucose metabolism at least partly through increasing proliferation of endogenous β cells and islet size. Acute Men1 excision up-regulated a group of proproliferative genes in pancreatic islets. Together, these findings demonstrate that established hyperglycemia can be reversed through repression of a single gene, Men1, in diabetic conditions, and suggest that menin is a vital regulator in pathogenesis of diabetes.