gebhart/patrepeval huggingface dataset:
Lasing dynamics of very long (13.5mm) tapered laser emitting at 975 nm (2017)

Mode-locked semiconductor laser technology is a promising technology candidate considered by European Space Agency (ESA) for optical metrology systems and other space applications in the context of high-precision optical metrology, in particular for High Accuracy Absolute Long Distance Measurement. For these applications, we have designed, realized and characterized a multi-section monolithic-cavity tapered laser diode with a record cavity length of 13.5mm. The laser operates at 975nm wavelength with average output power up to 600mW. It is based on a MOVPE grown laser structure with Aluminium free active region enabling high optical gain, low internal losses and low series resistance. It reaches passive mode-locking operation on fundamental cavity round trip frequency of 2.88GHz with chirped pulse width of 6.2ps and time bandwidth product of 8 for the average output power of 250mW. Alongside with passive mode-locking operation, we discuss other lasing regimes in these very long tapered lasers.
Photochemistry and Photophysics of (1-Naphthoyl)diphenylphosphine Oxide (1999)

(1-Naphthoyl)diphenylphosphine oxide (1) was synthesized and characterized and its photochemistry investigated using emission spectroscopy, pulse radiolysis, and nanosecond laser flash photolysis. Fluorescence quantum yields are low in aprotic polar and nonpolar solvents. In methanol, as a result of hydrogen-bonding, change of S1 from an n,π* state to a π,π* state leads to the decrease in the rate constant for intersystem crossing and results, finally, in an increase in fluorescence. Preferential solvation was evaluated using the ET indicator “Reichardt's dye” (RD). ETN values were determined by gradually increasing the concentrations of methanol in methanol/acetonitrile mixtures. Fluorescence quantum yields correlate with the ETN values. Photolysis of 1 yields diphenyl[1-naphthoyl)oxy]phosphine (6), formed mainly via cage recombination of radicals. No radicals were detected by either nanosecond laser flash photolysis or pulse radiolysis of 1 in aprotic solvents. However, photolysis in methanol yields radicals when 1 is excited at 266 nm. The phosphinoyl radical can be quenched by either methyl methacrylate (MMA) or oxygen (kq = 5.0 × 107 and 5.3 × 108 M-1 s-1, respectively). Such radical generation most likely results from the singlet excited state.
Fragmentation of IsomericN-Quinolinylphthalimides on Electron Impact Ionization (1996)

The isomeric 2-, 3-, 5-, 6- and 8-quinolinylphthalimides give rise to different electron impact ionization mass spectra, which permit easy distinction. The specific fragmentation process are rationalized in terms of proximity effects and stabilization of cyclic ion structures. Collision-induced dissociation spectra were used to support the proposed ion structures of major fragment ions.
A brief survey of benchmark usage in the architecture community (1991)

article Free Access Share on A brief survey of benchmark usage in the architecture community Authors: Thomas M. Conte Center for Reliable and High-Performance Computing, University of Illinois Center for Reliable and High-Performance Computing, University of IllinoisView Profile , Wen-mei W. Hwu Center for Reliable and High-Performance Computing, University of Illinois Center for Reliable and High-Performance Computing, University of IllinoisView Profile Authors Info & Claims ACM SIGARCH Computer Architecture NewsVolume 19Issue 4June 1991 pp 37–44https://doi.org/10.1145/122576.122580Online:01 July 1991Publication History 6citation207DownloadsMetricsTotal Citations6Total Downloads207Last 12 Months16Last 6 weeks5 Get Citation AlertsNew Citation Alert added!This alert has been successfully added and will be sent to:You will be notified whenever a record that you have chosen has been cited.To manage your alert preferences, click on the button below.Manage my AlertsNew Citation Alert!Please log in to your account Save to BinderSave to BinderCreate a New BinderNameCancelCreateExport CitationPublisher SiteeReaderPDF
Isolation and Identification of Photosynthetic Bacteria (Rhodospirillaceae) from Antarctic Marine and Freshwater Sediments (1976)

Sediment samples obtained from three freshwater lakes and off‐shore coastal marine waters on Signy Island, South Orkney Islands, Antarctica have been inoculated into selective enrichment media for purple non‐sulphur bacteria (Rhodospirillaceae). From the freshwater sediments strains of Rhodopseudomonas sphaeroides (1), Rhodopseudomonas palustris (1), Rhodospirillum fulvum (1), Rhodospirillum molischanum (1) and Rhodomicrobium vannielii (3) have been isolated. The only purple non‐sulphur bacteria obtained from Lake 10 (Amos lake) were strains of Rhodomicrobium vannielii which were able to tolerate hydrogen sulphide (up to 0.04% w/v) found in this lake. Growth of all the other isolates is inhibited by the presence of hydrogen sulphide. Marine sediments yielded strains of Rhodopseudomonas palustris and Rhodomicrobium vannielii . All the isolates grow optimally at temperatures between 25 and 30 °C. mean generation times vary between 8 and 10.7 h depending on species. There is no evidence of cold adaptation in any of the strains studied.
ResearchArticle Off-Design Considerations through the Properties of Some Pressure-Ratio Line of Radial Inflow Turbines (2008)

Correspondence should be addressed to N. Binder, nicolas.binder@isae.frReceived 18 July 2008; Accepted 17 November 2008Recommended by Gerard BoisRadial turbines are commonly used in applications involving operation through severe oﬀ-design conditions. The emergence ofvariable-geometry systems leads to the distinction between two oﬀ-design concepts: operational and geometric oﬀ-designs. Bothof these operating constraints should be integrated in the design procedure. Recent developments in prediction and optimizationmethods allowed such an integration, but involving complex algorithms is coupled with semiempiric loss models. This paperprovides a basis to obtain simple information from an existing or predesigned machine, for both operational and geometric oﬀ-design conditions. An alternative turbine map is deﬁned using loading and ﬂow coeﬃcients. A one-dimensional analysis showsthat the constant pressure-ratio lines are straight lines whose slope is remarkably correlated with the pressure-ratio value andgeometrical characteristics. This theoretical approach is validated against the experimentation of two machines, the linearity isobserved in both cases. The direct inﬂuence of the stator conﬁguration on the pressure-ratio lines conﬁrms the applicabilityof this work to variable-geometry stages. A dimensionless cross-section of the stator is thus deﬁned. However, the unexpecteddisplacement of the intercept of the pressure-ratio lines limits the application ﬁeld of this method. Nevertheless, a simpleperformance prediction analysis is proposed for blocked mass ﬂow operation.Copyright © 2008 N. Binder et al. This is an open access article distributed under the Creative Commons Attribution License,which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Distributed dynamic density coverage for human-swarm interactions (2015)

This paper presents two approaches to externally influence a team of robots by means of time-varying density functions. These density functions represent rough references for where the robots should be located. Recently developed continuous-time algorithms move the robots so as to provide optimal coverage of a given the time-varying density functions. This makes it possible for a human operator to abstract away the number of robots and focus on the general behavior of the team of robots as a whole. Using a distributed approximation to this algorithm whereby the robots only need to access information from adjacent robots allows these algorithms to scale well with the number of robots. Simulations and robotic experiments show that the desired behaviors are achieved.
Deracemization of Secondary Alcohols by using a Single Alcohol Dehydrogenase (2016)

Abstract We developed a single‐enzyme‐mediated two‐step approach for deracemization of secondary alcohols. A single mutant of Thermoanaerobacter ethanolicus secondary alcohol dehydrogenase enables the nonstereoselective oxidation of racemic alcohols to ketones, followed by a stereoselective reduction process. Varying the amounts of acetone and 2‐propanol cosubstrates controls the stereoselectivities of the consecutive oxidation and reduction reactions, respectively. We used one enzyme to accomplish the deracemization of secondary alcohols with up to >99 % ee and >99.5 % recovery in one pot and without the need to isolate the prochiral ketone intermediate.
Central α<sub>2</sub>‐Adrenergic Control of Colonic Transit in Rats (1989)

The effects of central and peripheral administration of α 2 ‐adrenoceptor agonists on colonic propulsion were examined in conscious rats chronically fitted with a catheter inserted in the lumen of the proximal colon and a cannula placed in a cerebral lateral ventricle. The mean retention time of a marker in the colon was determined by administration of a bolus of [ 51 Cr]sodium chromate into the proximal colon and collection of the feces at hourly intervals. In control studies the colonic mean retention time was 7.5 ± 1.6 hours. Clonidine administered intraperitonedy or intracerebroventricularly produced a dose‐dependent increase in mean retention time but was more potent when given intracerebroventricularly. St‐91, a quaternary derivative of clonidine which poorly crosses the blood‐brain barrier, delayed colonic transit after intracerebroventricular, but not after intraperitoneal, administration at the same dose. The increase in colonic mean retention time induced by intraperitonedy administered clonidine was antagonized by intracerebroventricular administration of yohimhine but not of prazosin, an α 1 ‐adrenoceptor antagonist. Yohimbine intracerebroventricularly or intraperitonedy administered alone at the same dose accelerated the colonic transit. Such data suggest a possible role of central α 2 ‐adrenoceptors in the regulation of colonic motility in rats.
Preliminary study on concrete with polystyrene waste coarse aggregate (2007)

Organized by Construction Industry Development Board, Malaysia (CIDB), Construction Research Institute of Malaysia (CREAM) & Universiti Teknologi MARA (UiTM) Perak, 13th - 14th March 2007 at Putra World Trade Centre, Kuala Lumpur.
Importance, Genesis and Recognition of Fracture Permeability in Fruitland Coalbed Methane Reservoirs of the Northern San Juan Basin, Colorado and New Mexico (1990)

Abstract Fracture permeability is inferred to be the most important influence on productivity of natural gas from commercial Fruitland Formation coalbed methane reservoirs in the Cedar Hill, Northeast Blanco Unit, and Ignacio Blanco fields of the northern San Juan Basin of Colorado and New Mexico. Reservoir deliverability in these areas with significant coalbed methane resources and reserves is less influenced by thickness, depth, completion technique, and measured and inferred pressure and formation damage. Cleats (coal fractures) in cores from four northern San Juan Basin Gas Research Institute Fruitland evaluation wells in these fields formed during coalification in strain fields imparted as a result of Early Tertiary Laramide and Late Tertiary-Recent Rio Grande Rift regional tectonic episodes. These cleats are not the result of sedimentary compactional folding. The presence of discrete, very thin interbedded layers of Fruitland coal and non-coal ("ash") lithotypes with different respective rock mechanical properties favored brittle deformation of coal layers. Many commercial Fruitland wells are located in areas with extremely minor true structural flexure (folds), which indicates cleat permeability is largely a function of coal composition. Knowledge concerning fracture permeability will influence further delineation and development of northern San Juan Basin Fruitland coalbed methane resources and reserves. The following procedure for qualitative recognition of areas with greater Fruitland permeability prior to drilling is suggested. 1. Preliminary collection and analysis of reservoir description and supporting geological and engineering data from in-house files and public literature should be completed. 2. The geologic setting of available acreage should be determined through interpretation of stratigraphic and structural maps and cross sections. 3. Favorable locations within acreage blocks should be delimited through interpretation of a). available drill stem test data, and b). gas and water production rate maps and data with respect to completion techniques and formation damage. 4. These areas of interest should be analyzed to find potential drilling locations by finding specific sites that a). required higher Fruitland drilling mud density to prevent blowouts using mud logs, drilling records and mud density maps, and b). have Fruitland coal waters with relatively low total dissolved solids (salinity) and chlorine ion concentrations. 5. Once a drilling location has been selected, potentially producible coal zones can be determined a). through identification of coal intervals with densities between 1.2 and 1.75 g/cc on open hole high resolution density logs, and b). by identification of coal intervals with drilling mud invasion through interpretation of micrologs and resistivity log suites from offset wells.
Suppression of Subsynchronous Torsional Interaction Using series compensation Equipment with power signal feedback (2015)

Suppression of subsynchronous torsional interaction(SSTI) in electrical power system achieved with insertion of an inverter to transmission line in series. Active power of the transmission line is sensed and filtered by three sets of bandpass filters to get the torsional signal for feedback. The output signal of controller is converted to voltage reference signals for each phase by dq inverse transformation and the voltage reference signals are input to PWM control circuit to generate the gate firing signals for the inserted inverter. Simulation results show the control is effective to suppress the SSTI
The BR domain of PsrP interacts with extracellular DNA to promote bacterial aggregation; structural insights into pneumococcal biofilm formation (2016)

The major human pathogen Streptococcus pneumoniae is a leading cause of disease and death worldwide. Pneumococcal biofilm formation within the nasopharynx leads to long-term colonization and persistence within the host. We have previously demonstrated that the capsular surface-associated pneumococcal serine rich repeat protein (PsrP), key factor for biofilm formation, binds to keratin-10 (KRT10) through its microbial surface component recognizing adhesive matrix molecule (MSCRAMM)-related globular binding region domain (BR187-385). Here, we show that BR187-385 also binds to DNA, as demonstrated by electrophoretic mobility shift assays and size exclusion chromatography. Further, heterologous expression of BR187-378 or the longer BR120-378 construct on the surface of a Gram-positive model host bacterium resulted in the formation of cellular aggregates that was significantly enhanced in the presence of DNA. Crystal structure analyses revealed the formation of BR187-385 homo-dimers via an intermolecular β-sheet, resulting in a positively charged concave surface, shaped to accommodate the acidic helical DNA structure. Furthermore, small angle X-ray scattering and circular dichroism studies indicate that the aggregate-enhancing N-terminal region of BR120-166 adopts an extended, non-globular structure. Altogether, our results suggest that PsrP adheres to extracellular DNA in the biofilm matrix and thus promotes pneumococcal biofilm formation.
Dispersion Phenomena of Gas Molecules Diffusing from a Gas Bubble into a Liquid (1977)

本報では, 静止液中を自由上昇する単一気泡から液相へ拡散する気体分子の混合現象を直接観察することを目的とする.観察は, 気泡がノズルで発生してから気泡が定速で上昇するまで, および定速上昇区間において行われた.気体分子の混合現象は, 気体分子を沃素澱粉反応により可視化して, さらに, 気泡をカメラで追跡することにより連続的に観察された.その結果, 気泡周囲の混合パターンは, Re数および気泡の経過時間の無次元数t*をパラメータにして分類されることが確認された.
Run-time adaptation method for mitigation of hardware faults and power budget variations in space-borne FPGA-based systems (2017)

This paper proposes a method for FPGA-based space-borne systems supporting multi-task applications to enable run-time combined adaptation to variations in system power budget and variations in available hardware resources due to occurrence of transient or permanent faults. The adaptation method assumes that each task in the workload has multiple implementations, which can operate at different clock frequencies, have different resource utilization and hence different power consumption. Also, while the critical tasks have strict performance specifications, the non-critical tasks can execute in a range of performance values. Depending on the existing power consumption and resource constraints, the method explores the design space of the task variants at run-time to find a suitable combination of implementation variants of all the tasks such that performance of the critical tasks is sustained, and performance of non-critical tasks is adjusted in order to satisfy a reduced power budget and/or create spare resources to enable relocation of affected task components in the case of hardware faults. The paper presents a detailed analysis of how the decision-making adaptation method selects a system configuration in the different scenarios of power budget depletion and occurrence of faults. It also analyzes the the worst-case overhead of the mechanism when implemented on the Arm Cortex A9 processor in the Zynq XC7Z020 SoC.
Frequency transposing measurement technique for oscillator comparisons (2013)

A measurement technique whereby one can measure the relative phase fluctuations and frequency stability of two oscillators operating at different frequencies, both well above the operating bandwidth of any available phase noise measurement test set, is presented and verified experimentally.
Trinucleotide Repeat Protocols (2004)

The discovery that trinucleotide repeats significantly influence the age of onset and severity of a variety of hereditary neurological disorders has opened the door to a deeper understanding of the disease mechanisms involved, as well as to a more productive search for novel therapeutic interventions. In Trinucleotide Repeat Protocols, established leaders in trinucleotide repeat disease describe in step-by-step detail their best techniques for studying trinucleotide pathology at the molecular level. The protocols cover a variety of targets, ranging from DNA and RNA to proteins and whole animals, and focus not only on causal genes, but also on their consequent products, such as transcription factors, neurotransmitter receptors, proteasomes, and mitochondria/oxidation damage. Experimental systems employed include E. coli, yeast, C. elegans, mouse, and generally take a clinical point of view. The authors utilize a wide range of techniques, including gel electrophoresis, quantitative RT-PCR, immunological analysis, antibody usage and its applications, receptor assays using radioisotope handling, gene delivery by virus, brain cell and organotypic cultures, gender dependency, and neuron structure analysis. Each protocol follows the successful Methods in Molecular Biology™ series format, offering step-by-step laboratory instructions, an introduction outlining the principle behind the technique, lists of the necessary equipment and reagents, and tips on troubleshooting and avoiding known pitfalls. Cutting-edge and highly practical, Trinucleotide Repeat Protocols offers neuroscientists powerful tools to elucidate both normal brain function and the mechanisms of hereditary neurological disease, as well as to develop the next generation of therapies for neuronal genetic diseases
Focal electroretinogram and visual field defect in multiple evanescent white dot syndrome. (1993)

Borruat, Kapoor, Sanders choroiditis and less frequently papillitis or optic neuritis. Our patient presented with simul- taneous reactivation of two areas of choroidoretinitis, characteristic of toxoplasmosis, which could be related to the loss of visual acuity and the visual field defect. However, the painful eye movements and the afferent pupillary defect were more suggestive of optic nerve disease.78 This was confirmed by an MRI examination which revealed an active inflamatory lesion in mid-portion of the right optic nerve, separate from the retinal lesions. Such optic nerve lesions occur in demyelinating disease,59 in granulo- matous disease and in Leber's hereditary optic neuropathy,"' which is usually situated more posteriorly.
Theories and simulations of roaming (2017)

The phenomenon of roaming in chemical reactions has now become both commonly observed in experiment and extensively supported by theory and simulations. Roaming occurs in highly-excited molecules when the trajectories of atomic motion often bypass the minimum energy pathway and produce reaction in unexpected ways from unlikely geometries. The prototypical example is the unimolecular dissociation of formaldehyde (H<sub>2</sub>CO), in which the "normal" reaction proceeds through a tight transition state to yield H<sub>2</sub> + CO but for which a high fraction of dissociations take place via a "roaming" mechanism in which one H atom moves far from the HCO, almost to dissociation, and then returns to abstract the second H atom. We review below the theories and simulations that have recently been developed to address and understand this new reaction phenomenon.
High-Throughput Assays to Measure Intracellular Ca2+ Mobilization in Cells that Express Recombinant S1P Receptor Subtypes (2012)

Intracellular Ca(2+) mobilization is a useful readout to screen for agonists or antagonists of G-protein -coupled receptors (GPCRs). Here, we describe methods to conduct high-throughput screening of stably or transiently transfected HTC4 cells expressing the individual S1P1-5 receptor subtypes. The cells are grown in 96-well plates and loaded with the cell permeable fluorescent Ca(2+) indicator dye Fura-2-AM. Changes in intracellular Ca(2+) levels in response to S1P or test compounds are detected using a FlexStation II scanning fluorometer with integrated fluidics transfer capabilities.
On the Protoporphyrin Monolayers Conformation (2006)

Challenging Characterisation: Precise determination of the conformation and electronic properties of haemoporphyrin–metal interfaces are important for device characterisation. The authors show that metalloporphyrins lie more planar on the substrate than the metal-free porphyrins, which are less tilted with respect to the surface normal direction (see sum-frequency generation, SFG, spectra). Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2267/2006/z500475_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.