gebhart/patrepeval huggingface dataset:
Quasi-two-dimensional excitons in finite magnetic fields (2002)

We present a theoretical and experimental investigation of the effects of a magnetic field on quasi-two-dimensional excitons. We calculate the internal structures and dispersion relations of spatially direct and indirect excitons in single and coupled quantum wells in a magnetic field perpendicular to the well plane. We find a sharp transition from a hydrogenlike exciton to a magnetoexciton with increasing the center-of-mass momentum at fixed weak field. At that transition the mean electron-hole separation increases sharply and becomes $\ensuremath{\propto}{P/B}_{\ensuremath{\perp}},$ where P is the magnetoexciton center-of-mass momentum and ${B}_{\ensuremath{\perp}}$ is the magnetic field perpendicular to the quantum well plane. The transition resembles a first-order phase transition. The magnetic-field--exciton momentum phase diagram describing the transition is constructed. We measure the magnetoexciton dispersion relations and effective masses in ${\mathrm{G}\mathrm{a}\mathrm{A}\mathrm{s}/\mathrm{A}\mathrm{l}}_{0.33}{\mathrm{Ga}}_{0.67}\mathrm{As}$ coupled quantum wells using tilted magnetic fields. The calculated dispersion relations and effective masses are in agreement with the experimental data. We discuss the impact of magnetic field and sample geometry on the condition for observing exciton condensation.
Subnanosecond-pulse generation at 308 and 450 nm by truncated stimulated Brillouin scattering (1984)

Narrow-linewidth radiation has been used to generate pulses of ~200-psec duration by the combined effects of stimulated Brillouin scattering and competing nonlinear processes.
A robot for wrist rehabilitation (2005)

In 1991, a novel robot named MIT-MANUS was introduced as a test bed to study the potential of using robots to assist in and quantify the neuro-rehabilitation of motor function. It proved an excellent fit for the rehabilitation of shoulder and elbow of stroke patients with results in clinical trials showing a reduction of impairment in these joints. The greater reduction in impairment was limited to the group of muscles exercised. This suggests a need for additional robots to rehabilitate other degrees of freedom. This paper outlines the mechanical design of a robot for wrist rehabilitation.
Isolation and Functional Analysis of a MYB Transcription Factor Gene that is a Key Regulator for the Development of Red Coloration in Apple Skin (2007)

Red coloration of apple (Malus domestica) skin is an important determinant of consumer preference and marketability. Anthocyanins are responsible for this coloration, and their accumulation is positively correlated with the expression level of anthocyanin biosynthetic genes. Regulation of expression of these genes is believed to be controlled by MYB transcription factors, and the MYB transcription factors involved in the activation of anthocyanin biosynthetic genes have been isolated in various plants. In the present study, we isolated and characterized a MYB transcription factor gene (MdMYBA) from apple skin. Characterization of MdMYBA demonstrated that (i) MdMYBA expression was specifically regulated depending on the tissue and cultivar/ species; (ii) its expression level was much higher in a deep-red cultivar ('Jonathan') than in a pale-red cultivar ('Tsugaru'); (iii) when cauliflower mosaic virus 35S::MdMYBA was introduced into the cotyledons of apple seedlings by means of a transient assay, reddish-purple spots were induced, and MdMYBA also induced anthocyanin accumulation in reproductive tissues of transgenic tobacco; (iv) the expression of MdMYBA was induced by UV-B irradiation and lowtemperature treatment, both of which are known to be important in the promotion of anthocyanin accumulation in apple skin; (v) MdMYBA bound specifically to an anthocyanidin synthase (MdANS) promoter region in a gel-shift assay; and (vi) MdMYBA was mapped to the near region of the BC226-STS (a 1 ) marker for the red skin color locus (R f ). These results suggest that MdMYBA is a key regulatory gene in anthocyanin biosynthesis in apple skin.
[Repeatability and heredity in assessing the genotype of breeding bulls]. (1995)

Phenotypic correlations between the breeding value of bulls and the level of lactation of their mothers as well as the results of the assessment of their fathers were calculated on the basis of the data of tests and assessments of 1687 diary bulls for quality of their progeny. A relatively weak correlation was detected for the paternal side of the pedigree. This was due to a low efficiency of genotype assessments. A functional relationship between the repetition value and the number of daughters and the number of herds, in which they were used, was determined.
Case 31-2017 (2017)

A 19-month-old girl presented with failure to thrive. Growth had been normal until she was 9 months of age, when she weighed 7.0 kg. Over the next 10 months, she did not gain weight despite growing normally in length. She appeared happy and playful. A diagnosis was made.
Thermal Grooving of MgO and Al <sub>2</sub> O <sub>3</sub> (1972)

High‐purity polycrystalline MgO and Al 2 O 3 were thermally grooved at 1500° and 1600°C. Accurate techniques were developed for following the growth of a single groove. For high‐purity samples growth kinetics were essentially similar to those reported in the literature but were determined to be controlled by volume diffusion. Specimens for thermal grooving were prepared from Al 2 O 3 to which transition metal oxides (Fe 2 O 39 , MnO, and TiO 2 ), which are known to accelerate shrinkage and sintering of Al 2 O 3 powder compacts, had been added; the rate of groove growth was increased remarkably by minor amounts of these additives. Control of partial pressure indicated that Fe 2+ and Ti 4+ are the species active in promoting groove growth. Substantial evidence was found for volume diffusion as the mechanism controlling groove formation.
Exposure to Long Chain Polyunsaturated Fatty Acids Triggers Rapid Multimerization of Synucleins (2001)

Detergent-stable multimers of alpha-synuclein have been found specifically in the brains of patients with Parkinson's disease and other neurodegenerative diseases. Here we show that recombinant alpha-synuclein forms multimers in vitro upon exposure to vesicles containing certain polyunsaturated fatty acid (PUFA) acyl groups, including arachidonoyl and docosahexaenoyl. This process occurs at physiological concentrations and much faster than in aqueous solution. PUFA-induced aggregation involves physical association with the vesicle surface via the large apolipoprotein-like lipid-binding domain that constitutes the majority of the protein. beta- and gamma-synucleins, as well as the Parkinson's disease-associated alpha-synuclein variants A30P and A53T, show similar tendencies to multimerize in the presence of PUFAs. Multimerization does not require the presence of any tyrosine residues in the sequence. The membrane-based interaction of the synucleins with specific long chain polyunsaturated phospholipids may be relevant to the protein family's physiological functions and may also contribute to the aggregation of alpha-synuclein observed in neurodegenerative disease.
An approach to a multimedia system on a chip (2003)

Issues of system-on-a-chip are reviewed and the reduction of the initial cost, mainly occupied by chip reworks, is shown to be the most important issue. In order to reduce chip reworks, SOC design methodologies based on applications can be segregated into three classes. One of three classes is to employ a programmable approach. The expansion of this class highly depends on the introduction of powerful programmable cores. Our dynamically reconfigurable logic engine (DRLE), which utilizes a FPGA approach with dynamically re-configurable functions, seems to be a promising way.
An interactive tool for design and support of lunar, gravity assist, and libration point trajectories (1993)

The 'Swingby' interactive tool for design, analysis, and support of maneuver planning for missions that involve transfers to the moon, the lunar orbits, multiple-gravity assists, and the libration-point orbits, runs on a PC and uses pull-down and pop-up menus to allow users to change physical constants and select perturbations for inclusion. Swingby can also target by ascertain parameters, or allow the computer to generate goals on the basis of mission requirements. Rapid mission analyses, operational maneuvers, and contingency plans are thereby obtainable.
The Tale of Protein Lysine Acetylation in the Cytoplasm (2010)

Reversible posttranslational modification of internal lysines in many cellular or viral proteins is now emerging as part of critical signalling processes controlling a variety of cellular functions beyond chromatin and transcription. This paper aims at demonstrating the role of lysine acetylation in the cytoplasm driving and coordinating key events such as cytoskeleton dynamics, intracellular trafficking, vesicle fusion, metabolism, and stress response.
Approximating optimal survivable scheduled service provisioning in WDM optical networks with Shared Risk Link Groups (2007)

Survivable service provisioning design has been an important issue in communication networks. In this work, we study survivable service provisioning using shared path based protection under a scheduled traffic model in wavelength convertible WDM optical mesh networks with Shared Risk Link Groups (SRLGs). In the scheduled traffic model, a set of demands is given, and the setup time and teardown time of a demand are known in advance. The objective is to minimize the total network resources (e.g., the number of wavelength-links) used by working paths and protection paths of the given set of demands while 100% restorability is guaranteed against any single SRLG failure. This problem is known to be NP-hard. We therefore study a time efficient approach to approximating the optimal solution to the problem. Our proposed approach is based on an iterative survivable routing scheme that utilizes a capacity provision matrix and processes demands sequentially. Our simulation results indicate that the proposed ISR-SRLG algorithm achieves excellent performance in terms of the total network resources used.
Synthesis of ABA Triblock Copolymers of Norbornenes and 7-Oxanorbornenes via Living Ring-Opening Metathesis Polymerization Using Well-Defined, Bimetallic Ruthenium Catalysts (1996)

Norbornene and 7-oxanorbornene derivatives were polymerized by ring-opening metathesis polymerization (ROMP) in a living manner by employing three new well-defined, bimetallic ruthenium catalysts (PR3)2Cl2Ru(CH-p-C6H4C(H))RuCl2(PR3)2 [R = Ph, 1; R = Cy (cyclohexyl), 2; R = Cyp (cyclopentyl), 3] as initiators to obtain ABA triblock copolymers with low polydispersities. 1−3 were synthesized via alkylidene transfer from 1,4-bis(α-diazomethyl)benzene to RuCl2(PPh3)3 and subsequent phosphine exchange. Reactions of 7-oxanorbornenes 5 and 6 or a silicon-containing norbornene 7 with 3 resulted in polymers with low polydispersities ranging from 1.10 to 1.22, while polymerizations initiated by 2 displayed higher polydispersities ranging from 1.20 to 1.35. Polymerizations of 5−7 catalyzed by 2 and 3 fulfill the requirements for a living polymerization. However, catalyst 1 is not reactive enough to polymerize functionalized norbornenes or 7-oxanorbornenes. The living polymerizations were successfully used to prepare three ABA triblock copolymers of monomers 5−7. In all cases, these ABA triblock copolymers have higher molecular weights than the homopolymers, and all polydispersities remained low.
World’s First PWR Reactor Internals Replacement (2006)

Mitsubishi Heavy Industries, Ltd. (MHI) completed replacement work of the upper and lower reactor internals of the 566 MW Ikata Unit No.1 of Shikoku Electric Power Co., Inc. The event marks the world’s first all-in-one-piece extraction and replacement work of its kind in a pressurized water reactor. The author wishes to introduce an outline and features of this milestone.
Multiplex, quantitative cellular analysis in large tissue volumes with clearing-enhanced 3D microscopy (C <sub>e</sub> 3D) (2017)

Organ homeostasis, cellular differentiation, signal relay, and in situ function all depend on the spatial organization of cells in complex tissues. For this reason, comprehensive, high-resolution mapping of cell positioning, phenotypic identity, and functional state in the context of macroscale tissue structure is critical to a deeper understanding of diverse biological processes. Here we report an easy to use method, clearing-enhanced 3D (C<sub>e</sub>3D), which generates excellent tissue transparency for most organs, preserves cellular morphology and protein fluorescence, and is robustly compatible with antibody-based immunolabeling. This enhanced signal quality and capacity for extensive probe multiplexing permits quantitative analysis of distinct, highly intermixed cell populations in intact C<sub>e</sub>3D-treated tissues via 3D histo-cytometry. We use this technology to demonstrate large-volume, high-resolution microscopy of diverse cell types in lymphoid and nonlymphoid organs, as well as to perform quantitative analysis of the composition and tissue distribution of multiple cell populations in lymphoid tissues. Combined with histo-cytometry, C<sub>e</sub>3D provides a comprehensive strategy for volumetric quantitative imaging and analysis that bridges the gap between conventional section imaging and disassociation-based techniques.
Object-centered constraints (2002)

The notion of object-centered (O-C) constraints, a subset of range-restricted Horn clauses with existential variables is presented. O-C constraints correspond, intuitively, to sets of clauses that involve connected objects or objects that can be located through navigation. Other types of constraints, e.g. transition or other temporal constraints are not specifically addressed. The research philosophy adopted is that such constraints can be expressed by introducing additional constructs into the schema, e.g. old-Student or new-Student and then expressing constraints in the same manner as the O-C constraints. This approach is conceptually accurate; it provides a uniform method for expressing and enforcing constraints using generalized constraint analysis. It allows the user to precisely describe the intended semantics, e.g. when to delete the old values after an update. This philosophy basically states that database constraints necessarily constrain database objects; in order to address additional issues like old/new values, the additional structures should be brought into the purview of the database by defining them in the database schema.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Optimal physical diversity algorithms and survivable networks (2002)

One way to improve the reliability of a network is through physical diversity, i.e., via routing of traffic between a given pair of nodes in the network over two or more physically-disjoint paths such that if a node or a physical link fails on one of the disjoint paths, not all of the traffic is lost. Alternatively, enough spare capacity may be allocated on the individual paths such that the lost traffic due to a node or physical link failure can be routed immediately over the predetermined paths. In this paper, we present optimal algorithms for K-disjoint paths (K/spl ges/2) in a graph of vertices (or nodes) and edges (or links). These algorithms are simpler than those given in the past. We discuss how such algorithms can be used in the design of survivable mesh networks based on the digital cross-connect systems (DCS). We also discuss the generation of optimal network topologies which permit K>2 disjoint paths and upon which survivable networks may be modeled. The study is of particular relevance to fiber networks.
Fate of mismatched base-pair regions in polyoma heteroduplex DNA during infection of mouse cells. (1976)

Heteroduplex DNA has been constructed from two variants of polyoma virus that differ genotypically at four distinct sites. The genotypes of the progeny virus derived from infections of mouse cells with single heteroduplexes have been analyzed to determine how the genotypic markers of the parental heteroduplex segregate. Markers that are separated by a length of DNA greater than 600 nucleotides segregate independently. Segregation was not detected between two markers separated by only approximately 90 nucleotides. We interpret these results on the basis of the correction of mismatched base-pair regions in the heteroduplex before the completion of DNA replication. We suggest that this technique provides valuable information concerning gene conversion in mamalian cells and permits the transfer of genotypic markers from one virus strain to another.
Quantum efficiency of opaque CsI photocathodes with channel electron multiplier arrays in the extreme and far ultraviolet (1982)

Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text Christopher Martin and Stuart Bowyer, "Quantum efficiency of opaque CsI photocathodes with channel electron multiplier arrays in the extreme and far ultraviolet," Appl. Opt. 21, 4206-4207 (1982) Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article
Cigarette smoke enhances chemotaxis via acetylation of proline-glycine-proline (2012)

Several chronic lung diseases have been linked to cigarette smoking (Chronic Obstructive Pulmonary Disease (COPD), and cancer are associated with increased tobacco use). We recently described a collagen fragment, proline-glycine-proline (PGP), chemotactic for neutrophils, that appears to play a role in COPD, cystic fibrosis, and bronchiolitis obliterans syndrome. PGP can exist in either its native or acetylated form (NAcPGP), although the mechanism of N-terminal-acetylation remains unknown. This work investigates the possibility that cigarette smoke (CS) and its components acetylate PGP, describing a possible mechanism for some of the chronic inflammation seen in tobacco-associated disease. CSE and CSC (3.56 and 12.38 ng/ml NAcPGP respectively, p less than 0.01) and its components (acrolein, acetaldehyde, and methyl glyoxal) acetylated PGP (0.51, 1.03, and 0.23 ng/ml NAcPGP, p less than 0.01). Both N-acetyl-cysteine and carbocysteine (scavengers of reactive aldehydes) blocked chemical acetylation of PGP by CS (100 percent and 97 percent inhibition, respectively, p less than 0.01). NAcPGP is more chemoattractive to neutrophils, and less susceptible to degradation by Leukotriene-A4-Hydrolase (detected in the lung). These experiments propose a mechanism for the increased neutrophil recruitment seen in smoking-associated lung diseases.
Benefits of Rituximab Combined With Intravenous Immunoglobulin for Desensitization in Kidney Transplant Recipients (2014)

Based on limited assessment with acknowledged limitations, both protocols appear effective in achieving levels of DSA allowable for transplantation. However, IVIG+rituximab appeared more effective in preventing DSA rebound and, more importantly, preventing ABMR and development of transplant glomerulopathy.
Complete Genome Sequence of Uropathogenic <i>Proteus mirabilis</i> , a Master of both Adherence and Motility (2008)

The gram-negative enteric bacterium Proteus mirabilis is a frequent cause of urinary tract infections in individuals with long-term indwelling catheters or with complicated urinary tracts (e.g., due to spinal cord injury or anatomic abnormality). P. mirabilis bacteriuria may lead to acute pyelonephritis, fever, and bacteremia. Most notoriously, this pathogen uses urease to catalyze the formation of kidney and bladder stones or to encrust or obstruct indwelling urinary catheters. Here we report the complete genome sequence of P. mirabilis HI4320, a representative strain cultured in our laboratory from the urine of a nursing home patient with a long-term (> or =30 days) indwelling urinary catheter. The genome is 4.063 Mb long and has a G+C content of 38.88%. There is a single plasmid consisting of 36,289 nucleotides. Annotation of the genome identified 3,685 coding sequences and seven rRNA loci. Analysis of the sequence confirmed the presence of previously identified virulence determinants, as well as a contiguous 54-kb flagellar regulon and 17 types of fimbriae. Genes encoding a potential type III secretion system were identified on a low-G+C-content genomic island containing 24 intact genes that appear to encode all components necessary to assemble a type III secretion system needle complex. In addition, the P. mirabilis HI4320 genome possesses four tandem copies of the zapE metalloprotease gene, genes encoding six putative autotransporters, an extension of the atf fimbrial operon to six genes, including an mrpJ homolog, and genes encoding at least five iron uptake mechanisms, two potential type IV secretion systems, and 16 two-component regulators.
Breast Cancer Survival (1998)

As the United Kingdom's Imperial Cancer Research Fund dedicates the month of October to raising awareness of breast cancer research, new findings have shown that chemotherapy can improve long-term survival in women whose cancer is confined to the breast.
One-Year, Randomized Study Comparing Bimatoprost and Timolol in Glaucoma and Ocular Hypertension (2002)

Bimatoprost QD provides sustained IOP lowering superior to timolol or bimatoprost BID and achieves low target IOPs in significantly more patients.
Estimation and Prediction of Ballistic Missile Trajectories (1996)

Abstract : To examine the capabilities satellites can bring to bear in a theater missile defense (TMD) environment, the authors describe a methodology, based on Kalman filtering, for the estimation and prediction of ballistic missile trajectories and then apply the methodology to a national theater ballistic missile. One useful application is in estimating the uncertainty associated with the location of a missile launch. Determining missile location uncertainty at any point along the trajectory is another application. Filters optimized for random errors alone as well as random plus bias errors are outlined. Harnessed in a theater of operations, the type of information described in this report can be used to enhance the capability of active and passive defenses and attack operations.
Field Verification of a Nondestructive Damage Localization and Severity Estimation Algorithm (1995)

An experiment to field-test an existing methodology for nondestructive damage localization in bridges is described. he-damage and post-damage modal data are extracted from a 1300 A span bridge located in New Mexico. The data are fed into the damage detection algorithm and the damage localized. Results of the analysis indicate that the methodology accurately localizes the damage.