gebhart/patrepeval huggingface dataset:
Tunable Oxygen Vacancy Formation Energetics in the Complex Perovskite Oxide Sr<sub><i>x</i></sub>La<sub>1–<i>x</i></sub>Mn<sub><i>y</i></sub>Al<sub>1–<i>y</i></sub>O<sub>3</sub> (2014)

The composition dependence of oxygen vacancy formation energies (EV) in the complex perovskite SrxLa1–xMnyAl1–yO3, a material system demonstrated to significantly outperform ceria for solar thermochemical (STC) fuel production, was investigated using a combination of ab initio and experimental techniques. Density functional theory calculations predict that EV as a function of composition spans a large range from near 0 to over 3 eV under standard conditions and exhibits trends consistent with equilibrium oxygen nonstoichiometries we determined using thermogravimetric analysis. Our findings show that the strong sensitivity of EV to composition arises from the composition dependence of the Fermi energy relative to the O 2p band center. From these results, we identify the range of EV particularly suited for STC cycles for a given set of reduction and oxidation reaction conditions and present a materials design strategy for the optimization of EV through compositional tuning.
Time estimation deficits in developmental dyslexia: evidence of cerebellar involvement (1995)

In addition to their language-related difficulties, dyslexic children suffer problems in motor skill, balance, automatization and speeded performance. Given the recent evidence for cerebellar involvement in the acquisition of language fluency, these problems suggest cerebellar deficit. To test the hypothesis of cerebellar dysfunction in dyslexia, a time estimation task considered to be a sensitive index of cerebellar function was administered to matched groups of dyslexic and control children. The dyslexic children showed the predicted deficit on time estimation (among the most severe obtained in our research programme) but not on a control, loudness estimation, task. Cerebellar dysfunction, therefore, provides a parsimonious account of otherwise disparate data on deficits in dyslexia.
Capillary Flows with Forming Interfaces (2007)

Capillary Flows with Forming Interfaces explores numerous theoretical problems that arise in the mathematical description of capillary flows. It focuses on developing a unified approach to a variety of seemingly very different capillary flows of practical importance where classical fluid mechanics leads to nonphysical results.The book begin
Nucleotide sequence of gltS, the Na+/glutamate symport carrier gene of Escherichia coli B. (1990)

The nucleotide sequence of the gltS gene coding for an Na+/glutamate symport carrier of Escherichia coli B has been determined, and the amino acid sequence of the carrier protein was deduced. The predicted glutamate carrier consists of 401 amino acids with a molecular weight of 42,455. A Shine-Dalgarno sequence and putative promoter sequences were found in the 5'-flanking region of the putative gltS gene. The predicted protein is very hydrophobic (73% nonpolar amino acids), and judging from its hydropathy profile, the protein is composed of 12 hydrophobic membrane-spanning segments with a mean length of 21.6 residues/segment. A typical rho-independent transcription termination signal was found downstream of the gltS gene. We found a conserved alignment of 5 amino acid residues (Gly42--Ala82-X-X-X-X-Leu87-X-X-X-Gly91-Arg92 ), which commonly exists in four Na+ symport carrier proteins, the glutamate carrier, and the proline carrier of E. coli, and the Na+/glucose co-transporters of rabbit and human intestines. We propose that this consensus sequence (or motif) may play an important role in cation recognition or binding in the Na+/solute symport reaction.
Attenuated <i>T</i> <sub>2</sub> relaxation by mutual cancellation of dipole–dipole coupling and chemical shift anisotropy indicates an avenue to NMR structures of very large biological macromolecules in solution (1997)

Fast transverse relaxation of 1H, 15N, and 13C by dipole-dipole coupling (DD) and chemical shift anisotropy (CSA) modulated by rotational molecular motions has a dominant impact on the size limit for biomacromolecular structures that can be studied by NMR spectroscopy in solution. Transverse relaxation-optimized spectroscopy (TROSY) is an approach for suppression of transverse relaxation in multidimensional NMR experiments, which is based on constructive use of interference between DD coupling and CSA. For example, a TROSY-type two-dimensional 1H,15N-correlation experiment with a uniformly 15N-labeled protein in a DNA complex of molecular mass 17 kDa at a 1H frequency of 750 MHz showed that 15N relaxation during 15N chemical shift evolution and 1HN relaxation during signal acquisition both are significantly reduced by mutual compensation of the DD and CSA interactions. The reduction of the linewidths when compared with a conventional two-dimensional 1H,15N-correlation experiment was 60% and 40%, respectively, and the residual linewidths were 5 Hz for 15N and 15 Hz for 1HN at 4 degrees C. Because the ratio of the DD and CSA relaxation rates is nearly independent of the molecular size, a similar percentagewise reduction of the overall transverse relaxation rates is expected for larger proteins. For a 15N-labeled protein of 150 kDa at 750 MHz and 20 degrees C one predicts residual linewidths of 10 Hz for 15N and 45 Hz for 1HN, and for the corresponding uniformly 15N,2H-labeled protein the residual linewidths are predicted to be smaller than 5 Hz and 15 Hz, respectively. The TROSY principle should benefit a variety of multidimensional solution NMR experiments, especially with future use of yet somewhat higher polarizing magnetic fields than are presently available, and thus largely eliminate one of the key factors that limit work with larger molecules.
A single-chip programmable platform based on a multithreaded processor and configurable logic clusters (2003)

This paper presents a single-chip programmable platform that integrates most of hardware blocks required in the design of embedded system chips. The platform includes a 32-bit multithreaded RISC processor (MT-RISC), configurable logic clusters (CLCs), programmable first-in-first-out (FIFO) memories, control circuitry, and on-chip memories. For rapid thread switch, a multithreaded processor equipped with a hardware thread scheduling unit is adopted, and configurable logics are grouped into clusters for IP-based design. By integrating both the multithreaded processor and the configurable logic on a single chip, high-level language-based designs can be easily accommodated by performing the complex and concurrent functions of a target chip on the multithreaded processor and implementing the external interface functions into the configurable logic clusters. A 64-mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> prototype chip integrating a four-threaded MT-RISC, three CLCs, programmable FIFOs, and 8-kB on-chip memories is fabricated in a 0.35-μm CMOS technology with four metal layers, which operates at 100-MHz clock frequency and consumes 370 mW at 3.3-V power supply.
The pointer assertion logic engine (2001)

We present a new framework for verifying partial specifications of programs in order to catch type and memory errors and check data structure invariants. Our technique can verify a large class of data structures, namely all those that can be expressed as graph types . Earlier versions were restricted to simple special cases such as lists or trees. Even so, our current implementation is as fast as the previous specialized tools. Programs are annotated with partial specifications expressed in Pointer Assertion Logic, a new notation for expressing properties of the program store. We work in the logical tradition by encoding the programs and partial specifications as formulas in monadic second-order logic. Validity of these formulas is checked by the MONA tool, which also can provide explicit counterexamples to invalid formulas. To make verification decidable, the technique requires explicit loop and function call invariants. In return, the technique is highly modular: every statement of a given program is analyzed only once. The main target applications are safety-critical data-type algorithms, where the cost of annotating a program with invariants is justified by the value of being able to automatically verify complex properties of the program.
Applying Physics-Based Scoring to Calculate Free Energies of Binding for Single Amino Acid Mutations in Protein-Protein Complexes (2013)

Predicting changes in protein binding affinity due to single amino acid mutations helps us better understand the driving forces underlying protein-protein interactions and design improved biotherapeutics. Here, we use the MM-GBSA approach with the OPLS2005 force field and the VSGB2.0 solvent model to calculate differences in binding free energy between wild type and mutant proteins. Crucially, we made no changes to the scoring model as part of this work on protein-protein binding affinity--the energy model has been developed for structure prediction and has previously been validated only for calculating the energetics of small molecule binding. Here, we compare predictions to experimental data for a set of 418 single residue mutations in 21 targets and find that the MM-GBSA model, on average, performs well at scoring these single protein residue mutations. Correlation between the predicted and experimental change in binding affinity is statistically significant and the model performs well at picking "hotspots," or mutations that change binding affinity by more than 1 kcal/mol. The promising performance of this physics-based method with no tuned parameters for predicting binding energies suggests that it can be transferred to other protein engineering problems.
Handlungsstrukturen im Werk von Charles Dickens (1986)

Abstiegsmuster 2.2.4.Liebesfabeln
Imidazoline receptors in the heart: a novel target and a novel mechanism of action that involves atrial natriuretic peptides (2004)

Chronic stimulation of sympathetic nervous activity contributes to the development and maintenance of hypertension, leading to left ventricular hypertrophy (LVH), arrhythmias and cardiac death. Moxonidine, an imidazoline antihypertensive compound that preferentially activates imidazoline receptors in brainstem rostroventrolateral medulla, suppresses sympathetic activation and reverses LVH. We have identified imidazoline receptors in the heart atria and ventricles, and shown that atrial I1-receptors are up-regulated in spontaneously hypertensive rats (SHR), and ventricular I1-receptors are up-regulated in hamster and human heart failure. Furthermore, cardiac I1-receptor binding decreased after chronic in vivo exposure to moxonidine. These studies implied that cardiac I1-receptors are involved in cardiovascular regulation. The presence of I1-receptors in the heart, the primary site of production of natriuretic peptides, atrial natriuretic peptide (ANP) and brain natriuretic peptide (BNP), cardiac hormones implicated in blood pressure control and cardioprotection, led us to propose that ANP may be involved in the actions of moxonidine. In fact, acute iv administration of moxonidine (50 to 150 microg/rat) dose-dependently decreased blood pressure, stimulated diuresis and natriuresis and increased plasma ANP and its second messenger, cGMP. Chronic SHR treatment with moxonidine (0, 60 and 120 microg kg(-1) h(-1), sc for 4 weeks) dose-dependently decreased blood pressure, resulted in reversal of LVH and decreased ventricular interleukin 1beta concentration after 4 weeks of treatment. These effects were associated with a further increase in already elevated ANP and BNP synthesis and release (after 1 week), and normalization by 4 weeks. In conclusion, cardiac imidazoline receptors and natriuretic peptides may be involved in the acute and chronic effects of moxonidine.
In-situ Analyses to Characterize the Properties and Metallurgical Attributes of In-Service Piping (2013)

Abstract Historically, the primary focus of direct examination (commonly referred to as “bell hole inspection”) was to assess coating condition and describe the attributes of mechanical damage or corrosion in addition to verifying wall thickness, diameter and perhaps seam type. With recent regulatory emphasis on verifying the accuracy of pipeline data, the role of in-situ, nondestructive determination of metallurgical attributes becomes increasingly important. This paper describes nondestructive analyses that can be performed on operating pipelines to evaluate steel composition, yield strength and tensile strength, hardness, microstructure, and crack morphology. The relevant technologies include visual examination, portable spectroscopy, laboratory analysis of steel filings, portable hardness testing, automated ball indentation testing, and metallography using replication techniques. The data can be used to support selection of optimized welding procedures, determine the lower bound yield strength of a pipeline segment at a selected confidence level, determine the acceptability of “hard spots” and weld heat affected zones, estimate toughness, determine the origin of planar flaws (manufacturing flaw, fatigue crack, high-pH stress corrosion cracking (high –pH SCC), or near neutral pH-SCC), and differentiate between electric resistance weld (ERW) seams having high temperature versus low temperature post weld heat treatments.
Middle view stereo representation-an efficient architecture for teleconference with handling occlusions (2002)

In this paper we propose a middle view stereo representation (MVSR) to efficiently utilize the bandwidth and ease the implementation of a view-adaptive teleconference system. We show that the MVSR can be used to reconstruct a high quality view from an arbitrary pose, using occlusion information. Its modular property makes real-time implementation feasible and due to the parallel setup latency can be kept low.
The Blue Obelisk—Interoperability in Chemical Informatics (2006)

The Blue Obelisk Movement (http://www.blueobelisk.org/) is the name used by a diverse Internet group promoting reusable chemistry via open source software development, consistent and complimentary chemoinformatics research, open data, and open standards. We outline recent examples of cooperation in the Blue Obelisk group: a shared dictionary of algorithms and implementations in chemoinformatics algorithms drawing from our various software projects; a shared repository of chemoinformatics data including elemental properties, atomic radii, isotopes, atom typing rules, and so forth; and Web services for the platform-independent use of chemoinformatics programs.
Daily physical activity assessment: comparison between movement registration and doubly labeled water (1996)

The use of movement registration for daily physical activity assessment was evaluated during a 7-day period in 30 free-living subjects. Body movement was registered with a Tracmor motion sensor consisting of a triaxial accelerometer and a data unit for on-line processing of accelerometer output over 1-min intervals. Average Tracmor output was correlated against four different energy estimates: 1) average daily metabolic rate (ADMR), determined with doubly labeled water; 2) ADMR-sleeping metabolic rate (SMR; determined in a respiration chamber); 3) (ADMR-SMR) per kilogram of body mass; and 4) the overall physical activity level (PAL = ADMR/SMR). The highest correlation was found for the relationship between Tracmor output and PAL (r = 0.58). After correction for Tracmor values arising from vibrations produced by transportation means, this correlation was improved to 0.73. There was no difference between Tracmor output and PAL in discriminating between overall activity levels with "low" (PAL < 1.60), "moderate" (1.60 < or = PAL < or = 1.85), and "high" (PAL > 1.85) intensity. It is concluded that the Tracmor can be used in free-living subjects to distinguish among interindividual as well as intraindividual levels of daily physical activity.
Microwave-Assisted Palladium-Catalyzed Phosphonium Coupling of 2(1<i>H</i>)-Pyrazinones (2009)

An expedient route for the synthesis of differently substituted 2(1H)-pyrazinones applying a microwave-assisted palladium-catalyzed phosphonium coupling procedure is reported. The method has also been successfully extended to some other tautomerizable heterocycles for efficient C-C cross-coupling.
Orthomode Transducers With Folded Double-Symmetry Junctions for Broadband and Compact Antenna Feeds (2018)

Orthomode transducers (OMTs) using folded six-port waveguide junctions are presented for obtaining the maximum compactness in antenna feeds with very wide performance. The proposed junctions are based on the well-known turnstile and Bøifot configurations, having two symmetry planes for keeping the isolation between orthogonal polarizations and the control of higher order modes. The folded arms provide a combined effect: good matching with very significant size reduction, especially in the transversal plane, reducing mass in satellite systems and allowing feeding eventual dense horn antenna arrays. Two Ku-band OMTs are presented in order to illustrate the advantages of the introduced junctions. The first design covers the band 10.4-18.8 GHz (57.5%) with 24 dB return loss. The second OMT, for the 12.60-18.25 GHz band, has measured return loss better than 29 dB in the design band and insertion loss smaller than 0.11 dB for both polarizations.
Increased Risk of Wheeze and Decreased Lung Function after Respiratory Syncytial Virus Infection (2014)

This is the first study showing that hospitalization for RSV bronchiolitis during infancy is associated with increased risk of wheezing, current asthma, and impaired lung function as compared to an unselected birth cohort at age 6.
Horace's Compromise: The Dilemma of the American High School (1984)

The first report from a study of high schools, co-sponsored by the National association of secondary school principals and the Commission on educational issues of the National association of independent schools
Thin Ferrite Phase-Shifters for Integrated Microwave Devices (1967)

Theoretical and experimental investigations have been conducted to determine the feasibility of microwave devices which utilize the remanent magnetization characteristics of dimensionally thin magnetic materials. A technique for producing phase-shift (both reciprocal and nonreciprocal) was theoretically developed and proven experimentally. By investigating the thin sample geometry (ferrite slabs 5 to 20 mils thick), we had the opportunity to use commercially available materials to prove the theory and at the same time extend it to a device configuration which is topologically close to the thin film. Phase-shifting elements composed of a meander line circuit deposited on a thin ferrite slab have been built and tested. By a modification of the meander-line-circuit dimensions and the direction of the ferrite magnetization relative to the circuit, both reciprocal and nonreciprocal devices can be made. A microstrip arrangement of the device was adopted so that the theory could be proved in a structure which closely approximates the ultimate thin-film application.
Developmentally important DNA elements within the bovine opsin upstream region. (1996)

The 10 DNA elements identified fell into three categories of developmental protection: those elements that were protected similarly at each developmental stage; those elements that were more highly protected when opsin transcription was at basal levels (i.e., less than 6 months gestation); and those elements that were more highly protected in fetal ages as compared to the adult animal. These elements are likely to be important in the developmental regulation of rod opsin gene expression.
Ultrasound Guided Surgery: Multimodal Visualization and Navigation Accuracy (2003)

The overall goal of this study was to develop new and improved techniques in the field of ultrasound-guided minimal invasive surgery that could be implemented in future navigation systems based on ...
Low‐cost wideband double‐layer microstrip coupled‐line directional coupler with high directivity (2014)

ABSTRACT In this article, a low‐cost double‐layer microstrip structure with a gap space between the two substrate layers is used to develop a microstrip coupled‐line directional coupler with high directivity. The proposed design shows a high directivity (more than 20 dB) over a wide frequency bandwidth (more than 2 GHz). The double‐layer directional coupler, designed on FR4 substrate material at 2.4 GHz provides more than 30 dB isolation. The simulation and measurement results are in good agreement. By applying a simple and low‐cost fabrication process and design, the directivity of the directional coupler is enhanced by more than 10 dB compared with a microstrip structure. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:1570–1575, 2014
Synthesis of N-Substituted Benzimidazole-2-thiones (1991)

Abstract General methods were developed for N-substitution of benzimidazoline-2-thione with alkyl, alkenyl, alkynyl and acyl groups using S-tritylation as a protecting reaction.
Parametric study of plasma startup systems for tokamaks (1977)

Plasma initiation from a poloidal coil set is discussed for inducing the startup voltage where no magnetic flux is generated in the plasma region. A mathematical expression is reported which states the current distribution necessary in a toroidal shell for the zero field condition inside. The combination of the startup coil in one physical unit with the vertical field coil is considered. A flux plot is discussed for the case that the coil set is mounted outside the toroidal field coils and iron used for reducing the magnetic field energy.
Atomic Layer Deposition of High k Dielectric and Metal Gate Stacks for MOS Devices (2005)

High‐k gate stack fabrication via atomic layer deposition (ALD) of ultra thin HfO2 and HfxSi1−xO2 films is demonstrated utilizing metal‐amide precursors and ozone as an oxidant. High resolution transmission electron microscopy (TEM) shows that films near 2.0 nm are reproducible. X‐ray reflectivity (XRR) and Rutherford backscattering (RBS) indicate that this ALD chemistry proceeds similarly on multiple surface preparations including HF last without growth incubation. High field mobility of more than 85% of the universal SiO2 mobility has been achieved at EOT ∼1nm with a reduction of more than two orders of magnitude in leakage current density as compared with a SiO2/poly Si gate. Various ALD metal nitrides such as TiN, HfN, HfSiN have been deposited on HfO2 and HfSiOx dielectrics which enabled a study of the interfacial reaction between high‐k dielectrics and metal electrode materials. The thermal stability of PVD Ru deposited on ALD HfO2 has also been observed.
ISO 14000 Environmental Management Standards (2003)

ISO 14000 environmental management standards , ISO 14000 environmental management standards , کتابخانه دیجیتال جندی شاپور اهواز