gebhart/patrepeval huggingface dataset:
Analysis and Design of a 30- to 220-GHz Balanced Cascaded Single-Stage Distributed Amplifier in 130-nm SiGe BiCMOS (2018)

This paper describes a novel distributed amplifier (DA) architecture for ultra-wide band of operation at millimeter-wave frequency. The DA consists of two cascaded single-stage DAs (CSSDAs) embedded in a balanced architecture. The implemented design retains the benefits of CSSDAs in terms of high maximum frequency, broad band of operation, and compact area, while significantly improving the amplifier input and output matching and its linearity with the balanced architecture, which are the major issues of this class of circuits. The small-signal analysis is provided in detail and explains the nature of the poor output matching typical of this class of DAs. Furthermore, the CSSDA gain is calculated as function of frequency and circuit parameters, extending available literature results, and providing direct design guidelines with a compact formula. Experimental validation is demonstrated with the fabrication of a circuit prototype in a 130-nm SiGe BiCMOS process. The circuit is able to provide an average of 16-dB gain over the frequency band 30-220 GHz, with input- and output-return losses above 10 dB, and a maximum measured output-referred 1-dB compression point of 4.5 dBm. To the best knowledge of the authors, the measured matching and linearity are the best reported for CSSDAs.
Interventional Cardiac Catheterization (1985)

STACK, RICHARD S. MD; CARLSON, ERIC B. MD; HINOHARA, TOMOAKI MD; PHILLIPS, HARRY R. MD Author Information
A Novel Probabilistic Key Management Algorithm for Large-Scale MANETs (2013)

Mobile ad hoc networks (MANETs) have become very interesting during last years, but the security is the most important problem they suffer from. Asymmetric cryptography is a very useful solution to provide a secure environment in multihop networks where intermediate nodes are able to read, drop or change messages before resending them. However, storing all keys in every node by this approach is inefficient, if practically possible, in large-scale MANETs due to some limitations such as memory or process capability. In this paper, we propose a new probabilistic key management algorithm for large-scale MANETs. To the best of our knowledge, this is the first method which probabilistically uses asymmetric cryptography to manage the keys in MANETs. In this algorithm, we store only a few keys in each node instead of all. We analytically prove that the network will remain connected with a high probability more than 99:99%. Furthermore, we analytically calculate the average path length in the network and show that this parameter will not have a significant increment using our algorithm. All analytical results are also validated by simulation to make them dependable.
Transparent\nPhotothermal Metasurfaces Amplifying Superhydrophobicity\nby Absorbing Sunlight (2020)

Imparting\nand maintaining surface superhydrophobicity has been\nreceiving significant research attention over the last several years,\ndriven by a broad range of important applications and enabled by advancements\nin materials and surface nanoengineering. Researchers have investigated\nthe effect of temperature on droplet–surface interactions,\nwhich poses additional challenges when liquid nucleation manifests\nitself, due to ensuing condensation into the surface texture that\ncompromises its antiwetting behavior. Maintaining surface transparency\nat the same time poses an additional and significant challenge. Often,\nthe solutions proposed are limited by working temperatures or are\ndetrimental to visibility through the surface. Here we introduce a\nscalable method employing plasmonic photothermal metasurface composites,\nable to harvest sunlight and naturally heat the surface, sustaining\nwater repellency and transparency under challenging environmental\nconditions where condensation and fogging would otherwise be strongly\npromoted. We demonstrate that these surfaces, when illuminated by\nsunlight, can prevent impalement of impacting water droplets, even\nwhen the droplet to surface temperature difference is 50 °C,\nby suppressing condensate formation within the texture, maintaining\ntransparency. We also show how the same transparent metasurface coating\ncould be combined and work collaboratively with hierarchical micro-\nand nanorough textures, resulting in simultaneous superior pressure-driven\nimpalement resistance and avoidance of water nucleation and related\npossible frosting in supercooled conditions. Our work can find a host\nof applications as a sustainable solution against impacting water\non surfaces such as windows, eyewear, and optical components.
Synthesis and Antifungal Activity of Some Novel N-(4-Phenyl-3-aroylthiazol-2(3H)-ylidene) Substituted Benzamides (2008)

Maternal folate and vitamin B<sub>12</sub> status during pregnancy may influence development of central nervous system (CNS) in the offspring. Very little attention has been paid to understand the combined effects of both the vitamins during pregnancy. The present study was designed to evaluate the biochemical and behavioral outcomes following alterations in folate and vitamin B<sub>12</sub> levels in C57BL/6 mice. The female mice were fed with different combinations of folate and vitamin B<sub>12</sub> whereas; males were fed with normal diet for 4 weeks. The mice were mated and the pregnant mice received the same diets as before pregnancy. The F1 male mice were further continued on maternal diet for 6 weeks following neurobehavioral and biochemical assessment. The body weight of the F1 male mice was significantly decreased in the mice that received folate and vitamin B<sub>12</sub> deficient diet. Altered cognitive functions were observed in the folate and B<sub>12</sub> deficient F1 male mice as assessed by Morris water maze and novel object recognition tests. Spontaneous locomotor activity was decreased in F1 male mice fed with folate and B<sub>12</sub> deficient diets. Elevated homocysteine levels and decreased hydrogen sulfide levels were also observed in the brain of F1 male mice on folate and B<sub>12</sub> deficient diets. However, GSH and GSSG levels were increased in the brain of the animals supplemented with folate deficient diet with different combinations of B<sub>12</sub>. The study suggests that exposure of female mice to folate and vitamin B<sub>12</sub> deficiency during pregnancy effects in-utero development of fetus, which further leads to behavioral anomalies in adult life and is sufficient to cause impaired cognitive behavior in the subsequent generation. Thus, elucidating the role and importance of maternal dietary folate and B<sub>12</sub> ratio during pregnancy.
The Effect of Surfactant on Formation of Calcium Carbonate (1983)

Abstract Calcium carbonate was precipitated by rapidly mixing calcium chloride solution, sodium carbonate solution, and aqueous surfactant solution at 25 °C in order to elucidate the effect of addition of surfactant on the formation. The samples obtained were examined by scanning electron microscopy, X-ray powder diffraction, and a specific surface area study. The sample without surfactant proved to be calcite crystals. When a cationic surfactant was added, the crystal structure was transferred from calcite and vaterite to calcite with an increase of the concentration of the cationic surfactant. On the other hand, the addition of a lower concentration of an anionic surfactant provided a mixture of calcite and vaterite, but in higher concentration, amorphous material was obtained. The samples with nonionic surfactant were vaterite crystals. It was found that the spherical particle ratio (Nsp) and the vaterite crystal ratio (Fv) in the sample depend on the concentration of the nonionic surfactant.
Phenotype Algorithms for the Identification and Characterization of Vaccine-Induced Thrombotic Thrombocytopenia in Real World Data: A Multinational Network Cohort Study (2022)

Our findings suggest that identifying VITT in observational data presents a substantial challenge, as implementing VITT case definitions based on the co-occurrence of TWT results in large and heterogeneous incidence rate and in a cohort of patints with baseline characteristics that are inconsistent with the VITT cases reported to date.
A practical approach to control of nonlinear discrete‐time state‐delay systems (2007)

Abstract The robust feedback stabilization of a class of nonlinear discrete‐time systems with unknown constant state‐delay and uncertain function of nonlinear perturbations is considered based on linear matrix inequality (LMI)‐based analysis and design procedures. In both cases of nominal and resilient feedback designs, the trade‐off between the size of the controller gains and the bounding factors is illuminated and incorporated into the design formalism. A dynamic output feedback controller is then designed for this class of systems. Seeking computational convenience, all the developed results are cast in the format of LMIs and several numerical examples are presented throughout the paper to demonstrate the advantages of the design methods. Copyright © 2007 John Wiley &amp; Sons, Ltd.
Recombination in Annealed and Nonannealed Polythiophene/Fullerene Solar Cells: Transient Photovoltage Studies versus Numerical Modeling (2010)

Transient photovoltage and differential charging have been used to measure the charge density and recombination rate in polymer solar cells consisting of regioregular poly(3-hexythiophene) (P3HT) blended with 1-(3-methoxycarbonyl)propyl-1-phenyl-[6,6]-methano fullerene (PCBM). Charge dynamics were found to be over an order of magnitude faster in nonannealed cells as compared to annealed cells. Numerical modeling demonstrated that physically reasonable changes in the domain size and phase segregation reproduced the change seen in the experimental results and thus suggests that measurements of recombination rate can be used as an indicator of the degree of intermixing of donor and acceptor in bulk heterojunction solar cells. Through calculation of the recombination flux at both open circuit and short circuit conditions, we determine that the increase in rate constant observed for the nonannealed devices is sufficient to explain the differences in device performance.
Visuotopic Mapping Through a Multichannel Stimulating Implant in Primate V1 (2004)

We report on our efforts to establish an animal model for the development and testing of a cortical visual prostheses. One-hundred-fifty-two electrodes were implanted in the primary visual cortex of a rhesus monkey. The electrodes were made from iridium with an activated iridium oxide film, which has a large charge capacity for a given surface area, and insulated with parylene-C. One-hundred-fourteen electrodes were functional after implantation. The activity of small (2-3) neuronal clusters was first recorded to map the visually responsive region corresponding to each electrode. The animal was then trained in a memory (delayed) saccade task, first with a visual target, then to a target defined by direct cortical stimulation with coordinates specified by the stimulating electrode's mapped receptive field. The SD of saccade endpoints was approximately 2.5 larger for electrically stimulated versus visual saccades; nevertheless, when trial-to-trial scatter was averaged out, the correlation between saccade end points and receptive field locations was highly significant and approached unity after several months of training. Five electrodes were left unused until the monkey was fully trained; when these were introduced, the receptive field-saccade correlations were high on the first day of use (R = 0.85, P = 0.03 for angle, R = 0.98, P < 0.001 for eccentricity), indicating that the monkey had not learned to perform the task empirically by memorizing reward zones. The results of this experiment suggest the potential for rigorous behavioral testing of cortical visual prostheses in the macaque.
ChemInform Abstract: Stereochemistry of Bisoxiranes of Vitamin D3‐4‐Phenyl‐triazoline‐3,5‐dione Adducts: X‐Ray Structure Analysis of One of Their Benzoyl Derivatives. (1990)

Abstract Complete epoxidation of the vitamin D3‐phenyltriazolinedione adducts (I) with MCPBA generates four diastereomeric bisoxiranes such as (IIa).
THE FIRST BEAM RECIRCULATION AND BEAM TUNING IN THE COMPACT ERL AT KEK (2014)

Superconducting(SC)-linac-based light sources, which can produce ultra-brilliant photon beams in CW operation, are attracting worldwide attention. In KEK, we have been conducting R&amp;D; efforts towards the energy-recovery-linac(ERL)-based light source* since 2006. To demonstrate the key technologies for the ERL, we constructed the Compact ERL (cERL)** from 2009 to 2013. In the cERL, high-brightness CW electron beams are produced using a 500-kV photocathode DC gun. The beams are accelerated using SC cavities, transported through a recirculation loop, decelerated in the SC cavities, and dumped. In the February of 2014, we succeeded in accelerating and recirculating the CW beams of 4.5 micro-amperes in the cERL; the beams were successfully transported from the gun to the beam dump under energy recovery operation in the main linac. Then, precise tuning of beam optics and diagnostics of beam properties are under way. We report our experience on the beam commissioning, as well as the results of initial measurements of beam properties.
[Meteorologic effects on hemorrhagic diathesis in hemophilia. 2. Weather effects on hemophilia with special reference to the atmospheric temperature-humidity complex]. (1990)

The meteotropism of haemophilic haemorrhages was investigated for 1,802 episodes of bleeding in 223 patients with the help of selected parameters of the atmospheric temperature-humidity complex and the air pressure. The accumulation of haemorrhages under the influence of tropic air masses was particularly conspicuous. In low blood pressure the frequency of bleeding also increased, whereas high-pressure conditions showed a decrease of bleeding. The study clearly confirms that the haemorrhagic tendency in haemophilia is influenced by weather. Therefore a medico-meteorologic forecast should be taken into consideration for haemophiliacs.
Afferent arteriolar reactivity to angiotensin II is enhanced during the early phase of angiotensin II hypertension (2000)

Increased renal microvascular reactivity may contribute to the blunted pressure natriuretic response and increase in blood pressure during the development of angiotensin II hypertension. The current studies were performed to determine renal microvascular reactivity during the early phases of angiotensin II-infused hypertension. Male-Sprague Dawley rats received angiotensin II (60 ng/min) or vehicle via an osmotic minipump. Normotensive and angiotensin II hypertensive rats were studied 1 and 2 weeks after implantation of the minipump. Systolic blood pressure averaged 117 +/- 4 mm Hg (n = 31) before pump implantation. Angiotensin II infusion increased systolic blood pressure to 149 +/- 3 and 187 +/- 5 mm Hg on infusion days 6 and 12, respectively. Renal microvascular responses to angiotensin II and norepinephrine at renal perfusion pressures of 100 and 150 mm Hg were observed using the in vitro juxtamedullary nephron preparation. Afferent arteriolar diameters of 1-week normotensive animals averaged 22 +/- 1 microm and after 2 weeks of vehicle infusion averaged 21 +/- 1 microm at a perfusion pressure of 100 mm Hg. In animals infused with angiotensin II for 1 or 2 weeks, diameters of the afferent arterioles perfused at a pressure of 100 mm Hg were 20% and 9% smaller, respectively. Additionally, 1- and 2-week hypertensive animals had an enhanced responsiveness of the renal microvasculature to angiotensin II. At a perfusion pressure of 100 mm Hg, angiotensin II (10 nmol/L) decreased afferent arteriolar diameter by 26 +/- 5% and 22 +/- 3% in the 1- and 2-week angiotensin II hypertensive rats, respectively. In 1- and 2-week normotensive animals, angiotensin II (10 nmol/L) decreased afferent arteriolar diameter by 18 +/- 2% and 15 +/- 2%, respectively, at a perfusion pressure of 100 mm Hg. In contrast, the afferent arteriolar response to norepinephrine was not altered in angiotensin II hypertensive rats. These data demonstrate an elevated renal microvascular resistance and enhanced vascular reactivity that is selective for angiotensin II in the early phases of hypertension development after infusion of angiotensin II. Thus, an alteration in renal microvascular function contributes to the blunted pressure natriuretic response and progressive development of hypertension.
High magnetic and thermal stability of nanopatterned [Co/Pd] based pseudo spin-valves with perpendicular anisotropy for 1 Gb magnetic random access memory applications (2009)

Nanopatterned [Co/Pd] based pseudo spin-valves (PSV) with perpendicular anisotropy exhibited high magnetic and thermal stabilities suitable for 1 Gb magnetic random access memory applications. Magnetic force microscopy images clearly demonstrated that the nanopatterned [Co/Pd] based PSVs down to 75×75 nm2 show a single domain configuration and a coherent magnetic reversal behavior. Furthermore, the nanopatterned [Co/Pd] based PSV with 90×90 nm2 device size showed stable magnetoresistance performance and switching characteristics. The high magnetic anisotropy and the large exchange energy of [Co/Pd] based PSV with perpendicular anisotropy are thought to be the main physical reasons for the technical promises.
Isolated Lung Perfusion with Melphalan Prolongs Survival in a Rat Model of Metastatic Pulmonary Adenocarcinoma (1999)

ILuP with melphalan prolongs survival in the treatment of experimental metastatic pulmonary carcinoma.
Reconnaissance par vision du type d'un véhicule automobile (2009)

Cet article présente un système de reconnaissance du type (constructeur, modèle) de véhicules par vision. À partir d’une vue de face avant d’un véhicule, limitée à sa calandre, nous en construisons une représentation à base de points de contour orientés. La classification est réalisée essentiellement en se fondant sur des algorithmes de votes. L’utilisation d’algorithmes de votes permet au système d’être robuste aux données manquantes ou erronées de la représentation. Nous avons donc construit une fonction de discrimination qui combine 3 votes et une distance, et agit comme une mesure de similarité entre chaque modèle et l’image de véhicule testée. Deux stratégies de décision ont été testées. La première associe à une image de calandre avant du véhicule, le modèle qui a obtenu la valeur la plus importante en sortie de la fonction. Une seconde stratégie regroupe toutes les sorties en un vecteur. La décision est alors prise via un algorithme de plus proche voisin dans un espace dit de votes. Avec la première stratégie, un taux de reconnaissance de 93 % est obtenu sur une base d’images prises en conditions réelles composée de 20 classes de type de véhicules. De plus, une caractérisation et une analyse du fonctionnement du système vis-à-vis de ses différents paramètres est proposée. Cependant ce taux chute à 80 % lorsque le nombre de modèles passe à 50 classes. Pour le même nombre de classes, la seconde stratégie permet d’obtenir un taux supérieur à 90 %.
Efficient Preparation of ortho-Aminobenzenesulfonamides using Ligand-Free Copper(I)-Catalyzed Amination (2011)

International audience
Construction and Field Evaluation of Electrically Isolated Tendons in a Prestressed Concrete Spliced Girder Bridge (2020)

This paper describes the first application of Electrically Isolated Tendon (EIT) technology in the United States. These systems have been developed to provide a level of quality assurance for post-tensioned strand systems in bridge applications. The EIT system is intended to provide electrical isolation between the strand inside the post-tensioning duct and the reinforcement outside of the duct system thus reducing the potential for corrosion to occur. This is achieved using plastic tendon ducts, additional protection of the ducts, modified tendon trumpets, electrical isolation plates at the tendon anchorages, and encapsulation of the strand anchors. A demonstration was conducted with support of the FHWA and Pennsylvania Department of Transportation. The system consists of a three-span continuous bridge composed of pretensioned Pennsylvania Bulb tees spliced and post-tensioned. The bridge system was monitored during beam fabrication, erection, and bridge construction and an overview of the EIT installation methodology is presented. The performance of the EIT system is compared with standard recommendations on acceptable performance and was found to meet the requirements. Installation of the EIT system was not significantly different than that of a conventional post-tensioning tendon. The system provided additional assurance of the electrical isolation in the bridge and appears to be a viable approach for long-term monitoring of the performance of post-tensioned grouted tendons.
Biotechnology aids to improve feed and feed digestion: Enzymes and fermentation (1989)

Click to increase image sizeClick to decrease image size Additional informationNotes on contributorsN. A. Dierick(Dir. Prof. Dr. H. Henderickx)
Catalytic Conversion of Cellulose into Sugar Alcohols (2006)

Sweetly done: Pt or Ru catalysts supported on inorganic oxides show high activity for the conversion of cellulose into sugar alcohols (mainly sorbitol) in water under hydrogen pressure; furthermore, the catalysts can be recycled over repeated runs. Glucose is produced in low yields, thus suggesting that the Pt (or Ru)/oxide works as a bifunctional catalyst for the hydrolysis of cellulose and subsequent reduction to sugar alcohols. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2006/z601921_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
Implementing an Attack on Bluetooth 2.1+ Secure Simple Pairing in Passkey Entry Mode (2012)

Due to the serious security issues found in early Bluetooth revisions, Bluetooth revision 2.1 (and later) uses a new pairing process called Secure Simple Pairing (SSP). SSP allows two devices to establish a link key based on a Diffie-Hellman key agreement and supports four methods to authenticate the key agreement. One of these methods is called Passkey Entry method, which uses a PIN entered on one or both devices. The Passkey Entry method has been shown to leak this PIN to any attacker eavesdropping on the first part of the pairing process. If in addition, the attacker can prevent the pairing process to successfully complete and the user uses the same PIN twice (or a fixed PIN is used), the attacker can mount a man-in-the-middle attack on a new run of the pairing process. In this paper, we explore the practicality of this attack and show that it is should be taken very seriously. Lacking devices with a reasonably programmable Bluetooth stack to implement the attack upon, we created Bluetrial: our own implementation of the relevant Bluetooth parts using the GNU Radio platform on USRP and USRP2 devices.
A personalized restaurant recommender agent for mobile e-service (2004)

A recommender agent in mobile environments should be context-aware to assist users while the users are moving. Many different kinds of contexts can be used by a recommender agent, such as weather, route conditions, time and location, etc. We demonstrate a prototype design of a software agent that recommends travel-related information according to contexts of the user in mobile environment. The recommendation procedure includes the dialogue between the user and the agent for modifying constraints given to the agent. We illustrate with a scenario of recommending a restaurant to a tourist in Taipei city by interacting with a personalized agent in a mobile device.