gebhart/patrepeval huggingface dataset:
Narrow angle lens antenna for THz applications (2009)

Dielectric covered antennas have been extensible used in microwaves. They are usually designed with dielectric quarter wavelength super-layers or with frequency selective surfaces. The main drawback of these antennas is that their BW is inversely proportional to the directivity. The new geometry proposed here makes use of a silicon lens instead of dielectric super-layer. In this case, the directivity is associated to the lens diameter instead of the leaky poles; therefore the BW will not depend anymore on the directivity but just on the initial cavity. The main advantage of this antenna when it is used in the THz band is related to the fabrication. Since only a small sector of the lens is required (approximately 12deg), the lens can be fabricated using microfabrication techniques. This will allow the fabrication of a whole array of lenses on the same wafer. Another advantage is that a simple quarter wavelength matching layer of the lens will be more efficient if a smaller angular region of the lens is used. Finally the feed used here is a standard waveguide which is easily integrable with Schottky diode.
Lubrication Condition Monitoring of Practical Ball Bearings by Electrical Impedance Method (2019)

In this study, the electrical impedance method was developed to monitor the thickness and breakdown ratio of oil films in elliptical elastohydrodynamic (EHD) contacts of practical ball bearings. First, it is theoretically shown that the oil film thickness and breakdown ratio can be simultaneously measured from the complex impedance generated when a sinusoidal voltage is applied to elliptical contacts. Subsequently, lubrication conditions of practical ball bearings were monitored at an ambient temperature to verify the measurement accuracy of the developed method. The oil film thickness in the low-speed range was consistent with the theoretical value calculated by Hamrock–Dowson equation. However, in the high-speed range, the oil film was thinner than the theoretical value considered an ambient temperature. In this high-speed range, the results of both the outer ring temperature and bearing torque revealed that the viscous shear heating and starvation were occurring simultaneously, thus supporting that the measured thickness would be thinner than the theoretical value. Besides, the developed method can also measure the breakdown ratio, confirming that it increases in the low-speed range where the bearing torque increases. That is, it indicates that not only the oil film thickness but also the breakdown ratio can be evaluated quantitatively.
Design analysis and testing of broadband circularly polarized compact microstrip antenna for wireless applications (2011)

GPS, Satellite phones, requires broadband, miniature size and circularly polarized antennas. Microstrip antennas have inherently narrow bandwidth, hence demanded enhanced bandwidth and size reduction. The present paper discusses the design analysis and testing of wideband compact and circular polarized MSA. The bandwidth of designed antenna is enhanced by using EC stacked patch antenna. The designed antenna has 3 dB AR BW of 16.71% and VSWR BW (VSWR<; 2) of 20.17%. It achieves a significant amount of size reduction by loading cross slots on radiating patch. The paper also analyzes different simulated designs in terms of VSWR, AR, Impedance, Gain, Return loss. The antenna after fabrication is tested using Vector Network Analyzer (R & S 300KHz-8GHz). It was found that measured results are in good agreement with simulated results.
Reflective direct‐view LCDs using polymer‐dispersed liquid crystal (PDLC) and dielectric reflectors (1999)

Abstract— Novel color and monochrome reflective direct‐view display configurations have been developed by combining light‐scattering PDLC layers with dielectric reflectors. Diffuse reflectances comparable to white paper were achieved.
Electrochemical Evidence of a Possible Route for the Metabolism of Oltipraz 5‐(2‐Pyrazinyl)‐4‐Methyl‐1,2‐Dithiole‐3‐Thione (1984)

The presence of the 5‐pyrazinyl substituent induces some noticeable changes in the reaction pathways accompanying the electrochemical reduction of oltipraz compared with the behavior of dithiole‐thiones, which do not possess such a substituent and are not endowed with antischistosomal activity. First, electrochemical techniques ascertain the transient formation of the radical anion resulting from the reversible addition of one electron to oltipraz in aprotic media. Second, the electrochemical two‐electron reduction, under anaerobic conditions, yields a mixture of dianionic isomers which can be protonated one, two, and even three times. In the protonated species which also exist in isomeric forms and are not starting materials for the regeneration of oltipraz through oxidation, both the dithiole‐thione and pyrazinyl rings are reduced. In the presence of air or methylating reagent, the two‐electron reduction products are transformed into pyrrolo [1,2‐a] pyrazine derivatives, which are some of the major metabolites of oltipraz.
Equine metabolic syndrome impairs adipose stem cells osteogenic differentiation by predominance of autophagy over selective mitophagy (2016)

Adipose-derived mesenchymal stem cells (ASC) hold great promise in the treatment of many disorders including musculoskeletal system, cardiovascular and/or endocrine diseases. However, the cytophysiological condition of cells, used for engraftment seems to be fundamental factor that might determine the effectiveness of clinical therapy. In this study we investigated growth kinetics, senescence, accumulation of oxidative stress factors, mitochondrial biogenesis, autophagy and osteogenic differentiation potential of ASC isolated from horses suffered from equine metabolic syndrome (EMS). We demonstrated that EMS condition impairs multipotency/pluripotency in ASCs causes accumulation of reactive oxygen species and mitochondria deterioration. We found that, cytochrome c is released from mitochondria to the cytoplasm suggesting activation of intrinsic apoptotic pathway in those cells. Moreover, we observed up-regulation of p21 and decreased ratio of Bcl-2/BAX. Deteriorations in mitochondria structure caused alternations in osteogenic differentiation of ASC<sub>EMS</sub> resulting in their decreased proliferation rate and reduced expression of osteogenic markers BMP-2 and collagen type I. During osteogenic differentiation of ASC<sub>EMS</sub> , we observed autophagic turnover as probably, an alternative way to generate adenosine triphosphate and amino acids required to increased protein synthesis during differentiation. Downregulation of PGC1α, PARKIN and PDK4 in differentiated ASC<sub>EMS</sub> confirmed impairments in mitochondrial biogenesis and function. Hence, application of ASC<sub>EMS</sub> into endocrinological or ortophedical practice requires further investigation and analysis in the context of safeness of their application.
COTS-Architecture with a Real-Time OS for a Self-Driving Miniature Vehicle (2013)

The international competition 2007 DARPA Urban Challenge significantly fostered the research and development on intelligent vehicles. Recent prototypes from Google for instance are able to drive fully autonomously through the San Francisco bay area for more than 450,000km. Even if self-driving vehicles are not yet available for purchase for customers, technology spin-offs are increasingly finding\ntheir ways into today's vehicles as pedestrian collision warning system, automated parking, or adaptive cruise control with temporary lane following. Thus, the upcoming generation of software and computer engineers needs to be accordingly educated to be already familiar with the concepts and pitfalls of these complex systems. In this article, we describe the architecture of a self-driving miniature vehicle based solely on commercial-off-the-shelf (COTS) components for the hardware and the real-time operating system ChibiOS/RT for the software/hardware interface.
Ion‐selective Electrodes for Measurements in Biological Fluids (2004)

Abstract For Abstract see ChemInform Abstract in Full Text.
Efficacy and Safety of Lidocaine–Prilocaine Cream for Pain during Circumcision (1997)

Lidocaine-prilocaine cream is efficacious and safe for the prevention of pain from circumcision in neonates.
Improvement of Free Solidified Surface of Strip Cast Using a Single Roll Caster by Scribing Semisolid Layer (2012)

AA5182 alloy was cast using the single roll caster equipped with the scraper. Improvement of flatness of the free solidified surface of the strip cast by a single roll caster was tried by scribing of semisolid layer using a scraper. The semisolid layer could be scribed and be made flat by the scraper. The scribing force was controlled by a dead weight. Defects which occurred on the scribed surface were investigated. The property of the free solidified surface (scribed surface) was compared with roll contact surface by the deep drawing test. The property of the scribed surface was almost as same as that of the roll contact surface. Mechanical property was investigated by the tension test.
14 Numeric Functions (2003)

14.1 Showing Functions 158 14.2 Reading Functions 159 14.3 Miscellaneous 159 14.4 Library Numeric 160
Synthesis of Heterocycles through Nitrenes (1974)

The reaction of triethyl phosphite with aromatic nitro compounds in which a nitrene intermediate was expected to intervene was investigated.Syntheses of certain indole d e r i v a t i v e s , such as harman, pseudorutaecarpine , benz[a]carbaaole and p-carboline; and quinoline derivatives that a r e related to natural products a r e d e s c r i b e d in t h i s review.It i s known that trivalent organophosphorous compounds, such as trialkyl phosphites and phosphines ( x ~P ) r e a c t with many oxygen containing compounds 1 t o give pentavalent phosphates.In 1962, Cadogan and co-workers applied this reaction to nitro and nitroso compounds.They found that c a r b a ~o l e derivatives ( 2 ) were obtained from 2nitroso-and 2-nitrobiphenyls (1) by refluxing with triethyl phosphite.2,3,4 HETEROCYCLES, Val. 2, No. 2, 1974
Improving image quality by SSIM based increase of run-length zeros in GPGPU JPEG encoding (2014)

JPEG encoding is a common technique to compress images. However, since JPEG is a lossy compression certain artifacts may occur in the compressed image. These artifacts typically occur in high frequency or detailed areas of the image. This paper proposes an algorithm based on the SSIM metric to improve the experienced quality in JPEG encoded images. The algorithm improves the quality in detailed areas by up to 1.29 dB while reducing the quality in less detailed areas of the image, thereby increasing the overall experienced quality without increasing the image data size. Further, the algorithm can also be used to decrease the file size (by up to 43%) while preserving the experienced image quality. Finally, an efficient GPU implementation is presented.
Isolable Zirconium(IV) Carbonyl Complexes. Synthesis and Characterization of (C5R5)2Zr(.eta.2-COCH3)(CO)+ Species (R = Me, H) (1994)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIsolable Zirconium(IV) Carbonyl Complexes. Synthesis and Characterization of (C5R5)2Zr(.eta.2-COCH3)(CO)+ Species (R = Me, H)Zhaoyu Guo, Dale C. Swenson, Anil S. Guram, and Richard F. JordanCite this: Organometallics 1994, 13, 3, 766–773Publication Date (Print):March 1, 1994Publication History Published online1 May 2002Published inissue 1 March 1994https://pubs.acs.org/doi/10.1021/om00015a009https://doi.org/10.1021/om00015a009research-articleACS PublicationsRequest reuse permissionsArticle Views253Altmetric-Citations72LEARN 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 Get e-Alerts
UWB short-range polarimetric imaging and its potential for target classification (2022)

Ultra-wideband (UWB) short-range polarimetric imaging provides not only high spatial resolution but also polarimetric scattering features of targets, which has great application potentials in subsurface survey with ground penetrating radar, through-the-wall imaging, security check, and so on. In this chapter, two key aspects of the UWB short-range polarimetric imaging, i.e., full-polarimetric data acquisition and polarimetric image reconstruction, are discussed [1, 2].
Effects of the proteasome inhibitor ritonavir on glioma growth in vitro and in vivo (2004)

Glioblastoma is a therapeutic challenge as a highly infiltrative, proliferative, and resistant tumor. Among novel therapeutic approaches, proteasome inhibition is very promising in controlling cell cycle and inducing apoptosis. This study investigated the effect of ritonavir, a protease inhibitor of the HIV and a proteasome modulator, on glioma cells. The hypothesis was that proteasome modulation, mainly by only inhibiting proteasome chymotrypsin-like activity, could be sufficient to control tumor progression. The experiments were done on a human glioblastoma-derived GL15 cell line and a rat nitrosourea-induced gliosarcoma 9L cell line. Culturing conditions included monolayer cultures, transplantations into brain slices, and transplantations into rat striata. The study demonstrates that ritonavir, by inhibiting the chymotrypsin-like activity of the proteasome, has cytostatic and cytotoxic effects on glioma cells, and can induce resistances in vitro. Ritonavir was unable to control tumor growth in vivo, likely because the therapeutic dose was not reached in the tumor in vivo. Nevertheless, ritonavir might also be beneficial, by decreasing tumor infiltration, in the reduction of the deleterious peritumor edema in glioblastoma.
A new approach to direct torque control of induction motor drives for constant inverter switching frequency and torque ripple reduction (2001)

In this paper, a new approach to the direct torque control (DTC) of induction motor drives is presented. In comparison with the conventional DTC methods, the inverter switching frequency is constant and is dramatically increased, requiring neither any increase of the sampling frequency, nor any high frequency dither signal. The well-developed space vector modulation technique is applied to inverter control in the proposed DTC-based induction motor drive system, thereby dramatically reducing the torque ripple and speed ripple. As compared to the existing DTC approach with constant inverter switching frequency, the presented new approach does not invoke any concept of deadbeat control, thereby dramatically reducing the computations. Experimental results are illustrated in this paper confirming that the proposed DTC method has the above-mentioned features even at the low speed range down to /spl plusmn/1 r/min.
Defects tail off with six-sigma manufacturing (1991)

A description is given of the six-sigma technique, the goal of which is to aid in the design of products that will function as intended, despite variations of 6 sigma ( sigma is the standard deviation) in their physical/operating parameters. The six-sigma metric provides a statistically defined yardstick for quantifying a product's level of quality, using process capability indices. The meaning of the indices and why they are useful are explained. The use of Shewhart statistical process control (SPC) charts is briefly discussed. The six steps in the six-sigma program are outlined.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
Supplementary Figures S1-S4 from Anti-KIT Monoclonal Antibody Treatment Enhances the Antitumor Activity of Immune Checkpoint Inhibitors by Reversing Tumor-Induced Immunosuppression (2023)

&lt;p&gt;Supplemental Figure S1A - Gating Plot Example for Identification of MDSC Populations in Spleen Samples (Pan02 Study); Supplemental Figure S1B - Gating Plot Example for Identification of T-Cell Populations in Tumor Samples (Pan02 Study); Supplemental Figure S2 - Inhibition of Mammalian KIT by KTN0158; Supplemental Figure S3 - Growth of Colon26 Tumor Cells In Vitro is SCF/KIT-Signaling Independent; Supplemental Figure S4 - Individual Tumor Growth Curves from the Colon26 Efficacy Study.&lt;/p&gt;
Courtyard Housing in Los Angeles: A Typological Analysis (1982)

The Bauhaus principles dominant in modern architecture downplay the value of historical precedents. Interest in historical architecture is growing, however, and architects recognize that it has qualities worth incorporating into contemporary architecture and city planning. Courtyard Housing in Los Angeles is a manifestation of this movement. It analyzes Los Angeles's courtyard architecture, popular in the 1920s and 1930s, and argues for the application of courtyard principles into modern urban design. The authors of Courtyard Housing are three Los Angeles architects primarily addressing their colleagues, who are in a position to incorporate the merits of courtyard plans and who bear the responsibility for creating human-oriented architecture. This emphasis is apparent in the authors' use of architectural jargon which is cryptic to the layman. Polyzoides, Sherwood, and Tice focus mainly on the components of the courtyard typology, which they consider a valuable model of how we should proceed in restructuring our cities (p. 211). Courtyard Housing also traces the historical development of the courtyards, which makes the book of interest to architectural and cultural historians. A set of case studies, organized chronologically by builders and carefully linked together by text, details the emergence and characteristics of courtyard housing still standing in Los Angeles. To complement the case studies, the authors present an analysis of Los Angeles culture and interpret courts as a response to this culture. The authors use a selection of contemporary writings on architecture to convey the tastes and attitudes of the twenties and thirties and explain how courtyards, particularly the popular Spanish Revival complexes, reflect these trends. In the epilogue, the authors make a sound case for historical preservation of the Los Angeles courts, giving the book appeal for a larger audience. The authors' attempt to address a variety of disciplines is both a strength and a weakness of Courtyard Housing. They correctly emphasize the interrelationship of architectural design and history, but they do not achieve the integration of the historical context in a tightly organized manner. So, while by no means definitive, Courtyard Housing provides an insightful and instructive glimpse into the residential courtyards of Los Angeles. KAREN L. SCHULTZ University of California Santa Barbara
Dissecting myocardial mechanics in patients with severe aortic stenosis: 2-dimensional vs 3-dimensional-speckle tracking echocardiography (2020)

Patients with severe AS demonstrated lower-than-normal GLS and GRS but appear to compensate with higher-than-normal GCS, apical rotation, and twist in order to maintain a preserved LVEF. GLS showed a modest correlation with valvulo-arterial impedance.
Supplementary Table 2 from Phase I Study of MEDI3726: A Prostate-Specific Membrane Antigen-Targeted Antibody–Drug Conjugate, in Patients with mCRPC after Failure of Abiraterone or Enzalutamide (2023)

&lt;p&gt;Summary of mean (%CV) PK parameters of Total ADC and Active ADC after a single IV infusion of MEDI3726&lt;/p&gt;
Transactional Confidentiality in Sensor Networks (2008)

In a sensor network environment, elements such as message rate, message size, mote frequency, and message routing can reveal transactional data - that is, information about the sensors deployed, frequency of events monitored, network topology, parties deploying the network, and location of subjects and objects moving through the networked space. Whereas the confidentiality of network communications content is secured through encryption and authentication techniques, the ability of network outsiders and insiders to observe transactional data can also compromise network confidentiality. Four types of transactional data are typically observable in sensor networks. Measures to limit the availability and utility of transactional data are essential to preserving confidentiality in sensor networks.
Pseudopotentials for an ultracold dipolar gas (2016)

A gas of ultracold molecules interacting via the long-range dipolar potential offers a highly controlled environment in which to study strongly correlated phases. However, at particle coalescence the divergent $1/{r}^{3}$ dipolar potential and associated pathological wave function hinder computational analysis. For a dipolar gas constrained to two dimensions we overcome these numerical difficulties by proposing a pseudopotential that is explicitly smooth at particle coalescence, resulting in a 2000-times speedup in diffusion Monte Carlo calculations. The pseudopotential delivers the scattering phase shifts of the dipolar interaction with an accuracy of ${10}^{\ensuremath{-}5}$ and predicts the energy of a dipolar gas to an accuracy of ${10}^{\ensuremath{-}4}{E}_{\mathrm{F}}$ in a diffusion Monte Carlo calculation.
Effect of hydrogen on Pb(Zr,Ti)O3-based ferroelectric capacitors (1998)

The properties of ferroelectric films are known to degrade when subjected to hydrogen in forming gas anneals. Earlier studies have attributed this degradation to the loss of oxygen from these films during these anneals. In this study, we show that though oxygen is lost during forming gas annealing, hydrogen incorporation is the primary mechanism for the degradation of ferroelectric properties. Raman spectra obtained from the forming gas-annealed films show evidence of polar hydroxil [OH−] bonds in the films. The most probable site for hydrogen ions is discussed based on ionic radii, crystal structure, electrical properties, and Raman spectra. We propose that the hydrogen ion is bonded with one of the apical oxygen ions and prevents the Ti ion from switching. Pyroelectric measurements on forming gas-annealed capacitors confirm that the capacitors no longer possess spontaneous polarization.