gebhart/patrepeval huggingface dataset:
Origin and correction of phase errors in airborne repeat-pass SAR interferometry (2002)

Airborne SAR surveys are often subject to severe motion errors. As the different tracks of a repeat-pass interferometric data set are acquired successively, any residual motion error has strong influences on the accuracy of the derived interferometric phase. In this paper we analyze the different error sources and present suitable compensation methods. Interferometric data acquired in L-band by the DLR's E-SAR system are used for quantitative analysis and for the demonstration of the proposed correction methods.
Smectic Compressibility of Polymer-Containing Lyotropic Lamellar Phases: An Experimental Tool to Study the Thermodynamics of Polymer Confinement (1997)

We investigate a mixed amphiphilic system formed from a brine swollen surfactant lamellar phase in between the bilayers of which is incorporated a neutral water-soluble non-adsorbing polymer: polyvynilpyrilidone (PVP) with a very large molecular weight. This system allows an experimental realization of the various regimes of polymer confinement within infinite slits. The presence of polymer will induce a new effective interaction between the bilayers which depends on the confinement regime of the macromolecular solution. We calculate the contribution of this polymer mediated interaction to the smectic compressibility in the four expected regimes of polymer confinement and show that it is a non monotonic function of the polymer concentration. This smectic compressibility is of particular interest because it can be readily derived from small angle scattering measurements. Our model allows a quantitative interpretation of the critical Lα/Lα phase separation which is observed upon progressive addition of salt at a particular composition of the system.
Successful field demonstration of bioaugmentation to degrade PCE and TCE to ethene. (2002)

Pilot-scale field demonstrations were conducted in a chlorinated ethene-contaminated aquifer at Kelly Air Force Base, Texas, USA, to evaluate the applicability of accelerated anaerobic bioremediation using bioaugmentation with the microbial consortium KB-1. Results from laboratory microcosm studies and the field demonstrated that anaerobic bioremediation could be enhanced by the supply of organic nutrients but that complete reductive dechlorination of tetrachloroethene and trichloroethene to ethene only occurred after bioaugmentation.
Random Anisotropy Model for Nanocrystalline Soft Magnetic Alloys with Grain-Size Distribution (2003)

A simple model considering grain-size distribution is proposed based on the random anisotropy model. When the maximum grain size (Dm) is less than the exchange correlation length and induced anisotropies are sufficiently small, the effective magnetic anisotropy constant (〈K1〉) is given by using a distribution function (f(D)) for the grain size (D) as 〈K1〉≈K14{∫0DmD3f(D)dD}2⁄(\\varphi6Ac3), where K1 is the magnetocrystalline anisotropy constant, \\varphi is a parameter which reflects both the symmetry of 〈K1〉 and the total spin rotation angle over the exchange-correlated coupling chain and Ac is the exchange stiffness constant. The log-normal distribution function reproduces well the observed grain-size distribution and yields 〈K1〉≈K14〈D〉6exp(6σD2)⁄(\\varphi6Ac3), where 〈D〉 is the mean grain size and σD is the geometric standard deviation for the distribution. This result satisfies the well-known 〈D〉6 law. However, 〈K1〉 increases with increasing σD even if 〈D〉 is constant. Our model has been extended by taking into account the effect of the coherent induced anisotropies on the exchange correlation length. The coercivity (Hc∝〈K1〉⁄Js, where Js is the saturation magnetization) of the nanocrystalline Fe-Nb-B(-P-Cu) alloys with different grain-size distribution have been calculated. Our model explains well the dependence of Hc on the grain-size distribution. These results suggest that one should pay attention on not only the mean grain size but also on the grain-size distribution since the inhomogeneity of the grain size increases Hc.
A RAPID LUTEINIZING HORMONE RADIOIMMUNOASSAY FOR THE PREDICTION OF OVULATION (1981)

Summary A rapid luteinizing hormone (LH) radioimmunoassay (total time 4 h) has been developed and used to measure the preovulatory LH surge in 22 patients. Ovulation, assessed by laparoscopy or mini laparotomy, did not occur until at least 32 h after the start of the LH surge. This rapid LH radioimmunoassay provides a simple method of predicting ovulation for the correct timing of oocyte collection or artificial insemination.
A family of halobacterial transducer proteins (1996)

A DNA probe to the signaling domain of a halobacterial transducer for phototaxis (HtrI) was used to clone and sequence four members of a new family of transducer proteins (Htps) in Halobacterium salinarium potentially involved in chemo- or phototactic signal transduction. The signaling domains in these proteins have 31-43% identity when compared with each other or with their bacterial analogs, the methyl-accepting chemotaxis proteins. An additional region of homology found in three of the Htps has 31-43% identity with HtrI. The Htps contain from 0 to 3 transmembrane helices and Western blotting showed that HtpIII is soluble. The arrangement of the domains in these Htps suggests a modular architecture in their construction.
MicroRNA In Situ Hybridization (2011)

In situ hybridization (ISH) is a technology that allows detection of specific nucleic acid sequences in tissue samples at the cellular level. For detection of individual microRNAs (miRNAs) and mRNAs, the ISH technology determines the cellular origin of expression and provides information on expression levels in different tissue compartments and cell populations. This histological expression analysis is of crucial importance for elucidating roles particularly of miRNAs in molecular and biological processes. mRNA expression analyses can partly be replaced by immunohistochemical detection of the protein encoded by the mRNA. Combined with the short sequences of the miRNAs (18-22 bp), this leaves miRNA ISH as an indispensable yet challenging technology in terms of detection and specificity analysis. In this chapter, a simple miRNA ISH protocol using chromogenic detection is presented. I touch upon critical steps in the ISH protocol, different applications on ISH technology platforms, advantageous use of locked nucleic acids (LNA™) in miRNA detection probes, qualification of clinical paraffin samples, and specificity analyses and quantification of the ISH signal.
Reaktionen mit 2‐Aza‐1,3‐butadien‐Derivaten, 1. Eine neue und besonders einfache Synthese von zentralaktiven β‐Carbolin‐Derivaten (1986)

Abstract Substituierte β‐Carboline 6 , die kürzlich wegen ihrer Benzodiazepinrezeptor‐Affinität starkes Interesse in der Arzneimittelforschung erweckten, werden aus substituierten Indolen 4 und 2‐Aza‐1,3‐butadienen 3 leicht synthetisiert. Bei milder Reaktionsführung können Dehydrotryptophan‐Derivate 5 isoliert werden. Umfang, Grenzen und Mechanismus dieser Methode werden diskutiert.
Ariadne, un intergiciel pour les réseaux ad hoc (2012)

National audience
Hybrid model for combined particle and continuum dynamics (2000)

Differential equations for continuum fields describe many macroscopic phenomena. Hydrodynamics, for example, is described by the Navier-Stokes equations, and their solutions depend on boundary conditions. However, boundary conditions are set by the inter actions at the atomistic or molecular scale. We introduce a "hybrid model" that permits a continuum description in one region to be coupled to an atomistic description in another region. The coupling is symmetric in the sense that the fluxes of the conserved quantities are continuous across the particle-field interface. As an example, we couple a Lennard-Jones liquid and the compressible Navier-Stokes equations and show that the hybrid model is consistent with hydrodynamic predictions.
Least-squares reverse time migration with dynamic time warping (2018)

Least-squares reverse-time migration (LSRTM) has been shown to improve image quality over conventional reversetime migration by enhancing the resolution, balancing illumination, and suppressing migration artefacts. However, it is also known to be sensitive to velocity errors. In the presence of velocity errors, predicted data show different moveouts from the observed data, which will harm LSRTM convergence and yield suboptimal results. To mitigate velocity errors, we apply dynamic time warping to the observed data to shift them towards the predicted data to improve data matching and subsequently images. In this paper, we show two synthetic examples and one real data example to demonstrate the advantages of dynamic time warping. Our observations show that dynamic time warping helps focus events, corrects phase distortion, improves event amplitudes, and thus improves event continuity. Presentation Date: Monday, October 15, 2018 Start Time: 1:50:00 PM Location: 207A (Anaheim Convention Center) Presentation Type: Oral
Probucol decreases neointimal formation in a swine model of coronary artery balloon injury. A possible role for antioxidants in restenosis. (1993)

The major finding of this study is that the antioxidant drug probucol reduces neointimal formation after oversized balloon injury in a swine model of restenosis. This suggests that active oxygen species may play a role in restenosis.
Study of the Molecular Forces Involved in the Gelation of Plasma Proteins at Alkaline pH (1989)

ABSTRACT The effects of vaious reagents on the rheological properties of heat‐induced (90°C) gels formed from plasma protein solutions (pH 9.0) were studied. Both propylene glycol (5–20%, w/v) and ethanol (5–20,%, w/v), which enhance hydrogen and electrostatic interactions, increased gel compressive strength, whereas mercaptoethanol (25–100 mM) which reduces disulfides, and the sulfhydryl‐blocking agent, p‐ hydroxymcrcuribenzoate (25–100 mM), reduced gel strength. High levels of guanidine hydrochloride (> 1M) or urea (> 2M), which weaken both hydrogen and hydrophobic interactions, decreased gel strength. On the basis of the results, we conclude that hydrophobic interactions and hydrogen and disulfide bonding are involved in the gelation of plasma proteins.
Monolithic operational amplifier design with improved HF behaviour (1976)

The design of a monolithic operational amplifier, which combines a large bandwidth and a high output current, is described. The output stage is equipped with n-p-n transistors only, biased in class-AB by an internal common-mode feedback loop. The intermediate stage consists of a unity-current-gain split-frequency-band voltage level shift. An integrated version, intended for driving 50-/spl Omega/ coaxial line systems, achieves a bandwidth of 25 MHz and 100-mA output current. The principle described provides the possibility for achieving higher output currents.
Cosmetics and hair loss (2002)

Cosmetic hair care products are often implicated by the user or the clinician in cases of hair loss. Yet, these products are used ad lib, in a wide variety of home conditions and on a wide variety of hair types, by millions of consumers every day with no adverse effects. Based on this extensive data set, the absence of literature reports, and a detailed understanding of the mode of action of cosmetic hair care products, we can conclude that they do not cause hair loss. Clinicians investigating cases of hair loss must fully appreciate the hair cycle, the length of time a single fibre may be present on the head, and its biological and cosmetic history in order to understand the causes of hair loss and make the correct diagnosis. With a better understanding of the cosmetic practices used by everyday consumers, the clinician will be in a strong position to help patients re-grow their hair and guide them through a high quality hair care regime.
Silorane resin supports proliferation, differentiation, and mineralization of MLO‐A5 bone cells <i>in vitro</i> and bone formation <i>in vivo</i> (2012)

Methyl methacrylate used in bone cements has drawbacks of toxicity, high exotherm, and considerable shrinkage. A new resin, based on silorane/oxirane chemistry, has been shown to have little toxicity, low exotherm, and low shrinkage. We hypothesized that silorane-based resins may also be useful as components of bone cements as well as other bone applications and began testing on bone cell function in vitro and in vivo. MLO-A5, late osteoblast cells, were exposed to polymerized silorane (SilMix) resin (and a standard polymerized bisGMA/TEGDMA methacrylate (BT) resin and compared to culture wells without resins as control. A significant cytotoxic effect was observed with the BT resin resulting in no cell growth, whereas in contrast, SilMix resin had no toxic effects on MLO-A5 cell proliferation, differentiation, nor mineralization. The cells cultured with SilMix produced increasing amounts of alkaline phosphatase (1.8-fold) compared to control cultures. Compared to control cultures, an actual enhancement of mineralization was observed in the silorane resin-containing cultures at days 10 and 11 as determined by von Kossa (1.8-2.0 fold increase) and Alizarin red staining (1.8-fold increase). A normal bone calcium/phosphate atomic ratio was observed by elemental analysis along with normal collagen formation. When used in vivo to stabilize osteotomies, no inflammatory response was observed, and the bone continued to heal. In conclusion, the silorane resin, SilMix, was shown to not only be non cytototoxic, but actually supported bone cell function. Therefore, this resin has significant potential for the development of a nontoxic bone cement or bone stabilizer.
Characterization of heat flow in silicon nanowire arrays for efficient thermoelectric power harvesting (2018)

We report the performance of Silicon Nanowire Arrays (SiNWA) with two different lengths (30 μm and 50 μm) for both p- and n-type Si(100) as a material applied for thermoelectric power harvesting, followed by comparing the recorded performance to that bulk Si. Heat flow from top to the bottom Cu sheet had noticeably decreased in SiNWA samples, resulting in a higher temperature difference, ΔT and Seebeck voltage, Voc than in bulk Si. The results suggested that both p- and n-type SiNWA samples (50 μm) have achieved 100 and 80% increase in ΔT, respectively, relative to the bulk Si.
Environment compensation using a posteriori statistics for distant speech-based human-robot interaction (2016)

Distant hands-free interaction with robot using voice is a difficult task. As the speech signal is reflected within the physical constraints of the room, the speech is contaminated by the environment and speech enhancement alone is not enough to rectify this mismatch in condition. The use of adaptation techniques may result to a robust model adapted to the new environment condition using some small amount of adaptation data. However, the dynamic nature of the interaction between the human and the robot (e.g., constant change in positions) implies a dynamic change in environment condition. Adaptation data collection corresponding to every change may become impractical. In this paper we propose a compensation mechanism short of being an adaptation technique. Our method can cope with the change in environment condition without the use of actual adaptation data. First, we estimate the a posteriori statistics, known in advance and empirically verified to perform well. Then, we infuse the a posteriori statistics to the problematic statistics (i.e., due to environment change) to give a boost to the latter. Weights are selected offline by minimizing the error of the envelopes between the posteriori and the problematic statistics for efficient estimation and fast update. Experimental results in real human-robot environment conditions show that our proposed method performs better than existing adaptation techniques in most cases without the need of adaptation data.
Mechanisms of increased gluconeogenesis from alanine in rat isolated hepatocytes after endurance training (2000)

This work aimed at further investigating the mechanisms by which liver gluconeogenic capacity from alanine is improved after training in rats, with an isolated hepatocyte model. Compared with controls in hepatocytes from trained rats incubated with gluconeogenic precursors (20 mM), the glucogenic flux (J(glucose)) was increased by 64% from alanine (vs. 21% for glycerol, 18% for lactate-pyruvate 10:1, and 10% for dihydroxyacetone). Maximal intracellular alanine accumulation capacity was also increased by 50%. Further experiments conducted on perifused hepatocytes showed that the putative adaptation at the level of the phosphoenolpyruvate-pyruvate cycle, which could be involved in the increased J(glucose) from lactate-pyruvate, was not involved in the increased J(glucose) from alanine after training. For alanine concentration higher than approximately 1 mM, an increased flux through alanine aminotransferase appeared responsible for the increased J(glucose). This could, in turn, depend on an increased supply of cytosolic 2-oxoglutarate because of the higher mitochondrial respiration observed in hepatocytes from trained rats and the activation of the malate-aspartate shuttle. At lower alanine concentration, the increase in J(glucose) appeared to be entirely due to the improved transport capacity.
<i>ACE</i> gene insertion/deletion polymorphism modulates capillary permeability in hypertension (2006)

A D/D (deletion/deletion) polymorphism within the ACE (angiotensin 1-converting enzyme) gene increases the risk of microalbuminuria, a predictor of atherosclerotic vascular disease, in essential hypertension. It is unknown, however, whether this genetic profile is accompanied by disturbed macromolecular permeability of systemic capillary endothelium, possibly in the context of generalized endothelial dysfunction. In the present study, the ACE gene polymorphism was determined by PCR in 79 never-treated uncomplicated hypertensive men and 16 normotensive men as controls. Evaluation variables were TERalb (transcapillary escape rate of albumin; the 1-h decline rate of intravenous (125)I-albumin, a measure of integrity of systemic capillary endothelium), albuminuria and forearm vasodilation to intra-arterial acetylcholine, an index of NO (nitric oxide)-mediated vasomotion, in addition to a series of sensitive parameters of albumin permeation (blood pressure, metabolic status and smoking habits). Analyses were done by comparing D/D homozygotes with grouped I/D (insertion/deletion) and I/I (insertion/insertion) subjects. TERalb was higher in D/D hypertensives, who had higher albuminuria, more frequent microalbuminuria and comparable forearm responsiveness to intra-arterial acetylcholine. Fasting glucose and insulin, insulin sensitivity, 24-h blood pressure, smoking habits and metabolic parameters did not differ between the two groups. TERalb and urine albumin values were positively associated in the hypertensive subjects. In conclusion, ACE D/D homozygosis, independently of several confounding factors, associates with higher TERalb in men with essential hypertension. This may reflect noxious genetic influences on systemic vascular permeability, a critical control mechanism for atherogenesis in the absence of grossly impaired NO-mediated arteriolar responsiveness. The parallel behaviour of TERalb and albuminuria suggests some shared genetically mediated determinant of renal and systemic microvascular abnormalities in hypertension.
Integration of Nanoscale Science and Technology into Undergraduate Curricula (2006)

An interdisciplinary group at the University of Cincinnati was recently awarded an NSF Nanotechnology Undergraduate Education grant, Integration of Nanoscale Science and Engineering into Undergraduate Curricula. The faculty come from Engineering, Physics, Chemistry, and Philosophy departments. The overall goal of this project is to incorporate nanotechnology education into undergraduate curricula in the Colleges of Engineering and Arts & Sciences. This paper will discuss the material taught in the two courses and the reaction of the students to highly interdisciplinary team teaching of nanotechnology. The lectures provide an overview of nanoscale science and engineering, with applications in nanomaterials, nanophotonics, nanoelectronics, nanomechanics, and bionanosystems. We also include lectures on societal and ethical implications of the nanoscale. The laboratory modules give students hands-on experience including synthesis of nanoparticles and nanotubes, and subsequent characterization with multiple stations of atomic force microscopes and laser spectrometers.
Fluorine-containing amino acids and their derivatives. 3. Stereoselective synthesis and unusual conformational features of threo- and erythro-3-fluorophenylalanine (1984)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFluorine-containing amino acids and their derivatives. 3. Stereoselective synthesis and unusual conformational features of threo- and erythro-3-fluorophenylalanineTadahiko Tsushima, Kenji Kawada, Junko Nishikawa, Tomohiro Sato, Kazuo Tori, Teruji Tsuji, and Susumu MisakiCite this: J. Org. Chem. 1984, 49, 7, 1163–1169Publication Date (Print):April 1, 1984Publication History Published online1 May 2002Published inissue 1 April 1984https://pubs.acs.org/doi/10.1021/jo00181a003https://doi.org/10.1021/jo00181a003research-articleACS PublicationsRequest reuse permissionsArticle Views288Altmetric-Citations32LEARN 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
Mechanisms for microbial reduction of humics and structurally related compounds. Final report (2002)

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