gebhart/patrepeval huggingface dataset:
PARAMETRIC INVESTIGATIONS INTO FLUID-STRUCTURE INTERACTIONS IN HOVERING FLAPPING FLIGHT (2013)

A parametric investigation into flapping flight is presented. For a Reynolds number of 75, harmonically forced flapping dynamics is studied. A wing section is modeled as two rigid links connected by a hinge with a torsion spring-damper combination. This section is wrapped in a smooth aerodynamic surface for immersion in the fluid domain. An immersed boundary method is employed on a two-dimensional structured Cartesian grid to solve the incompressible form of the Navier-Stokes equations for low Reynolds numbers by using a finite difference method. Fully coupled fluid-structure interactions are considered. Performance metrics, which include cycle-averaged lift, drag, power, and their ratios, are used to characterize the effects of different parameters and kinematics. Principal components of flow-field structures are quantified, and the system’s response is correlated to performance. The thesis findings can serve as a basis to understand and identify flapping frequencies that provide high performance.
Spatial error concealment for H.264 using sequential directional interpolation (2008)

Error concealment at the decoder restores erroneous macroblocks (MBs) caused by channel errors. In this paper, we propose a novel spatial error concealment algorithm based on prediction modes of intra-blocks which are included in a H.264-coded stream and highly correlated to the direction of local edge within the block. The key contribution is to sequentially interpolate each pixel in a lost MB by utilizing edge directions and strengths efficiently estimated from the neighboring blocks, preserving local edge continuity for more visually acceptable images. The proposed scheme is simple to implement and more reliably recover high-detailed content in corrupted MBs. The experimental results shows the proposed method achieves reduction in speed by 14% <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">~</sub> 39% as compared to existing method, and outperforms them in PSNR by 0.5 <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">~</sub> 1 dB as well as in subjective visual evaluation.
A new procedure for the preparation of highly active melonin from the dry seeds of Cucumis melo L. (1995)

Melon (Cucumis melo L.) dry seeds contain melonin, a protein that strongly inhibits ribosomes from different prokaryotic and eukaryotic sources including those from melon. The protein was purified by a new method to yield highly active and stable protein preparations that involves chromatography through S-Sepharose Fast Flow, CM-Sepharose, Superdex 75 and Mono-S. Melonin shows important functional properties: 1) its inhibitory effects on translation were irreversible; 2) it is a single unglycosylated polypeptide chain with an apparent M(r) of 22000; 3) it degrades RNA in a dose-dependent way without affecting DNA. In the light of present results melonin can be considered as a new plant RNase of unusual properties.
IDENTIFYING AND CHARACTERIZING MICROFLORA OF STONE FRUITS TO SELECT ANTAGONISTS FOR CONTROL OF BROWN ROT WITH EMPHASIS ON LATENT INFECTIONS (2011)

ISHS International Symposium on Biological Control of Postharvest Diseases: Challenges and Opportunities IDENTIFYING AND CHARACTERIZING MICROFLORA OF STONE FRUITS TO SELECT ANTAGONISTS FOR CONTROL OF BROWN ROT WITH EMPHASIS ON LATENT INFECTIONS
Loss of thalamic serotonin transporters in early drug-naïve Parkinson’s disease patients is associated with tremor: an [123I]β-CIT SPECT study (2008)

In vitro studies revealed serotonin transporter (5-HTT) decline in Parkinson's disease (PD). Yet, few studies investigated thalamic 5-HTT in vivo and its effect on PD heterogeneity. We analyzed thalamic [(123)I]beta-CIT binding (mainly reflecting 5-HTT binding) in 32 drug-naïve PD patients and 13 controls with SPECT. Twenty-six patients were examined twice (17 months apart). Based on UPDRS scores, we identified subgroups of patients with moderate/severe tremor (PD(T)) and without tremor (PD(WT)) at the time of clinical diagnosis. Additionally, depressive symptoms were evaluated using the Beck Depression Inventory (BDI) at baseline. Mean thalamic specific to non-specific [(123)I]beta-CIT binding ratio was lower in patients when compared to controls, and further decreased during follow-up. At baseline, average thalamic ratio was significantly lower in the PD(T) than in the PD(WT) subgroup. No correlation was found between BDI scores and thalamic binding ratios. Our findings show decline of [(123)I]beta-CIT binding to thalamic 5-HTT in PD and its possible contribution to tremor onset.
Self-Powered Broadband Photodetector Based on MoS2/Sb2Te3 Heterojunctions: A promising approach for highly sensitive detection (2022)

Topological insulators have shown great potential for future optoelectronic technology due to their extraordinary optical and electrical properties. Photodetectors, as one of the most widely used optoelectronic devices, are crucial for sensing, imaging, communication, and optical computing systems to convert optical signals to electrical signals. Here we experimentally show a novel combination of topological insulators (TIs) and transition metal chalcogenides (TMDs) based self-powered photodetectors with ultra-low dark current and high sensitivity. The photodetector formed by a MoS2/Sb2Te3 heterogeneous junction exhibits a low dark current of 2.4 pA at zero bias and 1.2 nA at 1V. It shows a high photoresponsivity of &gt; 150 mA W-1 at zero bias and rectification of 3 times at an externally applied bias voltage of 1V. The excellent performance of the proposed photodetector with its innovative material combination of TMDs and TIs paves the way for the development of novel high-performance optoelectronic devices. The TIs/TMDs transfer used to form the heterojunction is simple to incorporate into on-chip waveguide systems, enabling future applications on highly integrated photonic circuits.
Theoretical and experimental study of supercontinuum generation in a water-core PCF (2008)

Photonic crystal fibers have been the subject of several studies for potential applications in areas such as telecommunications, sensing, metrology, biology, medicine and spectroscopy. These fibers have a number of unique features owing to their geometric structure, which consists of a matrix of regular holes that travels along its longitudinal axis. This design allows the selective insertion of materials such as gas and liquids, which interact efficiently with the guided modes. The insertion of materials can also be explored to introduce a new degree of freedom to control the properties of waveguide, by modifying modal features such as nonlinear coefficient and dispersion. Such control may, in some cases, contribute to increase the efficiency of nonlinear effects, enabling the creation of a supercontinumm spectrum. In this work we compare results obtained both experimentally and numerically of supercontinuum generation in a distilled water‐core photonic crystal fiber. The results indicate the importance of setting the pump close to the zero dispersion region of the material so that a broad spectrum can be obtained. Improved agreement between experiments and simulations requires a better degree of experimental detail to be incorporated into the theoretical model, which will be the objective of future studies and work.
Myocardial inefficiency is an early indicator of exercise-induced myocardial fatigue (2023)

Increased exercise intensity and duration were associated with increased myocardial wasted work post-exercise, without alterations in LVEF and GLS from baseline values. These findings suggest that markers of myocardial inefficiency may precede reduction in global LV function as markers of myocardial fatigue.
The preparation of the first α-vinylidene-β-lactams (1987)

J. D. Buynak, J. Mathew, M. N. Rao, E. Haley, C. George and U. Siriwardane, J. Chem. Soc., Chem. Commun., 1987, 735 DOI: 10.1039/C39870000735
Self‐Stratifying Porous Silicones with Enhanced Liquid Infusion and Protective Skin Layer for Biofouling Prevention (2020)

Abstract Liquid‐infused silicones are a promising solution for common surface adhesion problems, such as ice accumulation and biofilm formation, yet they generally lack the tunability, mechanical durability and/or longevity essential for industrial applications. Self‐stratifying porous silicones (SPS) infused with compatible silicone oil are developed as a passive strategy to address these shortcomings. Through emulsion templating, porosity is formed in the bulk polymer, providing increased free volume for oil infusion, while a non‐porous skin layer is formed at the surface. The bulk porosity and pore size distribution of SPS are independently controlled by varying water and surfactant concentration respectively, leading to a higher volume of oil infusion and improved oil retention relative to an unmodified silicone. Despite a higher oil loading and bulk porosity, the skin layer provides liquid‐infused SPS with a comparable surface elasticity to liquid‐infused silicones. The potential of liquid‐infused SPS as a nontoxic fouling release coating for marine applications is demonstrated using laboratory assays against a variety of soft and hard fouling organisms.
<title>High-speed magnetic head driver in overwritable magneto-optical disk drive for use in magnetic field modulation method</title> (1994)

ABSTRACT Magnetic filed modulation recording, even at the switching frequency of 14.2 MHz, duty 33% can beachieved by the newly developed magnetic head driver. 1. INTRODUCTION The capacity and data transfer rate are relatively dominant factors to choose the data storage devicesas a computer's peripheral. The capacity of I 30mm Magneto-Optical (MO) disk cartridge has beenincreased to be 1.3 Gbytes by the standard of ECMA 184, which is so-called X2 MO disk cartridge. However. as long as the conventional light modulation method is employed in the MO drive, the performance of data recording is very low because of the erasing process before data recording. Inorder to reduce the time required for data recording, we have developed a direct overwrite MO drive,which features as follow.1) High speed data recording achieved by the magnetic field modulation method 1 )2) 2).Conventional mark position recording on the same disk format as definedby X2 standardIn this MO drive, the development of magnetic head coil driving circuit, which we shall call heremagnetic head driver, is a key issue to achieve direct overwrite at the high recording frequency.This paper reports on its design and its read/write performance.
Medicago truncatula Yellow Stripe-Like7 encodes a peptide transporter required for symbiotic nitrogen fixation (2020)

ABSTRACT Yellow Stripe-Like (YSL) proteins are a family of plant transporters typically involved in transition metal homeostasis. The substrate of three of the four YSL clades (clades I, II, and IV) are metal complexes with non-proteinogenic amino acid nicotianamine or its derivatives. No such transport capabilities have been shown for any member of the remaining clade (clade III), which is able to translocate short peptides across the membranes instead. The connection between clade III YSL members and metal homeostasis might have been masked by the functional redundancy characteristic of this family. This might have been circumvented in legumes through neofunctionalization of YSLs to ensure a steady supply of transition metals for symbiotic nitrogen fixation in root nodules. To test this possibility, Medicago truncatula clade III transporter MtYSL7 has been studied both when the plant was fertilized with ammonium nitrate or when nitrogen had to be provided by endosymbiotic rhizobia within the root nodules. MtYSL7 is a plasma membrane protein expressed in the vasculature and in the nodule cortex. This protein is able to transport short peptides into the cytosol, although none with known metal homeostasis roles. Reducing MtYSL7 expression levels resulted in diminished nitrogen fixation rates. In addition, nodules of mutant lines lacking YSL7 accumulated more copper and iron, the later the likely result of increased expression in roots of iron uptake and delivery genes. The available data is indicative of a role of MtYSL7, and likely other clade III YSLs, in transition metal homeostasis. ONE SENTENCE SUMMARY Medicago truncatula YSL7 is a peptide transporter required for symbiotic nitrogen fixation in legume nodules, likely controlling transition metal allocation to these organs.
Bacterial Zinc Metalloenzyme Inhibitors: Recent Advances and Future Perspectives (2023)

Human deaths caused by Gram-negative bacteria keep rising due to the multidrug resistance (MDR) phenomenon. Therefore, it is a priority to develop novel antibiotics with different mechanisms of action. Several bacterial zinc metalloenzymes are becoming attractive targets since they do not show any similarities with the human endogenous zinc-metalloproteinases. In the last decades, there has been an increasing interest from both industry and academia in developing new inhibitors against those enzymes involved in lipid A biosynthesis, and bacteria nutrition and sporulation, e.g., UDP-[3-O-(R)-3-hydroxymyristoyl]-<i>N</i>-acetylglucosamine deacetylase (LpxC), thermolysin (TLN), and pseudolysin (PLN). Nevertheless, targeting these bacterial enzymes is harder than expected and the lack of good clinical candidates suggests that more effort is needed. This review gives an overview of bacterial zinc metalloenzyme inhibitors that have been synthesized so far, highlighting the structural features essential for inhibitory activity and the structure-activity relationships. Our discussion may stimulate and help further studies on bacterial zinc metalloenzyme inhibitors as possible novel antibacterial drugs.
Study Interpretation Phenomenon Magnetostriction and Noise of Lamination FeSi Sheets for Transformer (2016)

One of the main problems using a transformer is the vibration and noise. This phenomenon occurs due to deformation/ magnetostriction of lamination sheets transformer core. In this research, the analysis of difference the hysteresis curve, noise and magnetostriction between the rolling direction & the transverse direction have been done. Magnetostriction was measured by gauge of deformation. Acoustic noise was measured by microphone. Magnetic saturation of the rolling direction was higher than in the transverse direction. In contrast, the magnetostriction & acoustic noise of transverse directionwas higher than the rolling direction.Harmonic frequency noise measurement had similarities with harmonic frequency magnetostriction: 100, 200, 300, 400 Hz.With increasing current/voltage, the amplitude of the harmonic frequencies noise and magnetostriction will increase.
Therapeutic Drug Monitoring of Posaconazole in Hematology Patients: Experience with a New High-Performance Liquid Chromatography-Based Method (2010)

Parallel administration of the proton pump inhibitor (PPI) esomeprazole has been shown to decrease oral bioavailability of posaconazole in healthy volunteers. We prospectively analyzed serum samples (n = 59) obtained from hematology patients (n = 27) under posaconazole prophylaxis. Patients treated concomitantly with pantoprazole had significantly lower posaconazole levels than patients without PPI treatment (median levels of 630 microg/liter versus 1,125 microg/liter, respectively). These results suggest that drug monitoring is relevant when posaconazole and pantoprazole are administered concomitantly.
Ambient PM10 Concentrations at a Beef Cattle Feedlot in Kansas (2007)

Particulate matter (PM) emissions from open beef cattle feedlots can reduce visibility and have negative health implications for animals, workers, and neighbors. As more stringent air quality standards are developed, there is a need to characterize and control PM emission from beef cattle feedlots. This research was conducted to monitor concentrations of PM10 (particulate matter with aerodynamic equivalent diameter of 10 m or less) upwind and downwind of a commercial cattle feedlot in Kansas and to compare measurement of PM10 with different samplers under field conditions. A 30,000 head commercial cattle feedlot was instrumented with one Tapered Element Oscillating Microbalance (TEOM) along its upwind, or southern, perimeter and one TEOM along its downwind, or northern perimeter. Both TEOMs were configured to continuously monitor PM10 concentrations. Results from the continuous monitoring from April to August 2006 indicated net PM10 mass concentration ranging from 102 to 234 g/m3 (20 min averaging time). In addition to the continuous monitoring, one-day field intensive sampling campaigns were conducted in which high-volume and low-volume PM10 samplers were collocated with the TEOM samplers and were used to measure the time-averaged PM10 concentrations upwind and downwind of the feedlot. Comparison of the samplers indicated that the measured PM10 mass concentrations were highest with the TEOM PM10 monitors and lowest with the low-volume PM10 samplers.
ChemInform Abstract: Synthesis of New Pyrazolo[4,3‐c]quinolin‐3‐ones Derivatives and Some Oxazolo[4,5‐c]quinoline‐2,4‐diones. (1999)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
A semiempirical model of the normalized radar cross‐section of the sea surface 1. Background model (2003)

Multiscale composite models based on the Bragg theory are widely used to study the normalized radar cross‐section (NRCS) over the sea surface. However, these models are not able to correctly reproduce the NRCS in all configurations and wind wave conditions. We have developed a physical model that takes into account, not only the Bragg mechanism, but also the non‐Bragg scattering mechanism associated with wave breaking. A single model was built to explain on the same physical basis both the background behavior of the NRCS and the wave radar Modulation Transfer Function (MTF) at HH and VV polarization. The NRCS is assumed to be the sum of a Bragg part (two‐scale model) and of a non‐Bragg part. The description of the sea surface is based on the short wind wave spectrum (wavelength from few millimeters to few meters) developed by Kudryavtsev et al. [1999] and wave breaking statistics proposed by Phillips [1985] . We assume that non‐Bragg scattering is supported by quasi‐specular reflection from very rough wave breaking patterns and that the overall contribution is proportional to the white cap coverage of the surface. A comparison of the model NRCS with observations is presented. We show that neither pure Bragg nor composite Bragg model is able to reproduce observed feature of the sea surface NRCS in a wide range of radar frequencies, wind speeds, and incidence and azimuth angles. The introduction of the non‐Bragg part in the model gives an improved agreement with observations. In Part 2, we extend the model to the wave radar MTF problem.
Weathering and biodegradation of hydrothermal petroleum in the north rift of Guaymas Basin, Gulf of California (2019)

The Guaymas Basin, Gulf of California, is an actively spreading ocean basin, part of the system of spreading axes and transform faults extending from the East Pacific Rise to the San Andreas fault. Upward migration of hydrothermal petroleum in the basin rifts occurs by both bulk transport and high temperature/pressure aqueous and supercritical gaseous (e.g. CO2, CH4) fluid phases into the seabed sediments. The resulting mounds are laden with the youngest hydrothermal petroleum known to date. The north rift hydrothermal system has been dormant for ~ 3000 years, and organic geochemical analyses of sediment samples collected by both piston and push corers and by dredging operations from various cruises to the Gulf of California show that the organic matter is composed primarily of autochthonous lipids from marine biota, overprinted by hydrothermal petroleum. The chemical composition of this petroleum indicates severe biodegradation for exposed samples, based on the contents of aliphatic, aromatic, steroid, and hopanoid biomarkers. Sulfurized lipids are enriched in the biodegraded oils. Both hydrothermal minerals and petroleum in the mounds of the north rift seabed have been weathered by oxidative/microbial processes.
Improved nitrate sensing using ion selective electrodes based on urea–calixarene ionophores (2007)

Urea–calix[4]arenes 1 and 2 were synthesised and incorporated into ISE membranes for assessment as sensors for inorganic anions in water. 1 revealed a strong response to all anions following the Hofmeister selectivity order. For ISEs of 2, the response to a portion of the anion series was suppressed, increasing the margin of selectivity of nitrate over chloride, a common interferant of nitrate in fresh and marine water samples. The performance of ISEs containing 2 was compared to commercially available alkylammonium nitrate ion-exchange salts used for nitrate sensing. Our ISEs performed favourably in terms of sensitivity, linear range and LOD with an improved selectivity coefficient over chloride of log KNO3−Cl−pot of −3.4, an order of magnitude better than commercially available nitrate ISEs. The pre-conditioning of ISEs in non-primary chloride salt was essential for obtaining these results.