gebhart/patrepeval huggingface dataset:
Erythromycin-Resistant Mutant of <i>Escherichia coli</i> with Altered Ribosomal Protein Component (1968)

Erythromycin combines with 50S ribosomal subunit of an erythromycin-sensitive Escherichia coli (strain Q13), while ribosomes from an erythromycin-resistant mutant from this strain have little affinity for the antibiotic. A protein component of the 50S subunit of the mutant strain is distinct from that of the parent Q13 strain.
Droplet combustion experiment drop tower tests using models of the space flight apparatus (1989)

The Droplet Combustion Experiment (DCE) is an experiment that is being developed to ultimately operate in the shuttle environment (middeck or Spacelab). The current experiment implementation is for use in the 2.2 or 5 sec drop towers at NASA Lewis Research Center. Initial results were reported in the 1986 symposium of this meeting. Since then significant progress was made in drop tower instrumentation. The 2.2 sec drop tower apparatus, a conceptual level model, was improved to give more reproducible performance as well as operate over a wider range of test conditions. Some very low velocity deployments of ignited droplets were observed. An engineering model was built at TRW. This model will be used in the 5 sec drop tower operation to obtain science data. In addition, it was built using the flight design except for changes to accommodate the drop tower requirements. The mechanical and electrical assemblies have the same level of complexity as they will have in flight. The model was tested for functional operation and then delivered to NASA Lewis. The model was then integrated into the 5 sec drop tower. The model is currently undergoing initial operational tests prior to starting the science tests.
<title>First principles calculations of interactions of ZrCl<formula><inf><roman>4</roman></inf></formula> precursors with the bare and hydroxylated ZrO<formula><inf><roman>2</roman></inf></formula> surfaces</title> (2004)

First-principles calculations have been performed to determine the structures and relative energies of different zirconium chloride groups chemisorbed on the tetragonal ZrO<sub>2</sub>(001) surface and to study the effects of the surface coverage with metal chloride groups and the degree of hydroxylation on the adsorption energies of metal precursors. It is shown that the molecular and dissociative adsorption energies of the ZrCl<sub>4</sub> precursor on the bare t-ZrO<sub>2</sub>(001) surface are too small to hold ZrCl<sub>4</sub> molecules on the surface during an atomic layer deposition (ALD) cycle at temperatures higher than 300°C. On the contrary, it has been found that molecular adsorption on the fully hydroxylated zirconia surface leads to the formation of a stable adsorbed complex. This strong adsorption of ZrCl<sub>4</sub> molecules can lead to a decrease in the film growth rate of the ALD process at lower temperatures (<200°C). The energies of interaction between adsorbed ZrCl<sub>4</sub> groups at a 50% surface coverage has been found to be relatively small, which explains the maximum film growth rate observed in the ZrCl<sub>4</sub>:H<sub>2</sub>O ALD process. Moreover, we found that the adsorbed ZrCl<sub>4</sub> precursors after hydrolysis give rise to very stable hydroxyl groups, which can be responsible for film growth at high temperatures (up to 900°C).
Low-Molecular-Weight IgM Antibody to Hepatitis B Core Antigen in Chronic Infections with Hepatitis B Virus (1983)

IgM antibody to hepatitis B virus core antigen (IgM anti-HBc) develops during acute hepatitis B but frequently persists in chronic infections. To characterize persistent IgM anti-HBc better, 7-8S and 19S immunoglobulin fractions were prepared by rate-zonal centrifugation of sera from 17 patients with persistent hepatitis B (chronic active hepatitis) and were tested for IgM anti-HBc by a specific radioimmunoassay. In 16 sera peak activity was found in 7-8S fractions, although in 11 sera a minor peak was also present in 19S fractions. The low molecular weight of the predominant IgM anti-HBc was confirmed by gel filtration. In competition experiments, the binding of 7-8S antibody to an anti-IgM-coated solid phase was blocked more effectively by purified IgM than by purified IgG. These findings indicate that hepatitis B carriers with chronic active hepatitis have predominantly 7-8S IgM anti-HBc and represent a novel demonstration of naturally occurring 7-8S IgM with defined antiviral specificity.
Chemical Nature of Oil Extenders for Synthetic Rubbers (1954)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChemical Nature of Oil Extenders for Synthetic RubbersF. S. Rostler and R. M. WhiteCite this: Ind. Eng. Chem. 1954, 46, 3, 610–620Publication Date (Print):March 1, 1954Publication History Published online1 May 2002Published inissue 1 March 1954https://pubs.acs.org/doi/10.1021/ie50531a055https://doi.org/10.1021/ie50531a055research-articleACS PublicationsRequest reuse permissionsArticle Views23Altmetric-Citations5LEARN 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 options Get e-Alerts
Pablo no ha muerto guion del primer capítulo para una mini serie de televisión basada en el proceso de creación de personajes de ficción a partir de personajes reales (2014)

This work is based on the adaptation of a character in real life he lived until the early 90's called Pablo Emilio Escobar Gaviria, the renowned drug dealer who bled the country with violence, after deceiving the world in the operating made in Medellin on December 2, 1993 by men called Bloque de Busqueda , has taken refuge in a village south of Colombia, where he has designed a plan to blend in this place, to have everything ready to go for your family which thinks he's dead.
Some Observations on the Hofmann, Lossen and Curtius Rearrangements (1950)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSome Observations on the Hofmann, Lossen and Curtius RearrangementsCharles R. Hauser and Simon W. KantorCite this: J. Am. Chem. Soc. 1950, 72, 9, 4284–4285Publication Date (Print):September 1, 1950Publication History Published online1 May 2002Published inissue 1 September 1950https://pubs.acs.org/doi/10.1021/ja01165a516https://doi.org/10.1021/ja01165a516research-articleACS PublicationsRequest reuse permissionsArticle Views147Altmetric-Citations20LEARN 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-Alertsclose Get e-Alerts
A multiagent multisensor based security system for intelligent building (2003)

The security of buildings, homes, laboratories, offices and factories is essential to human life. An unlucky event is often caused by human negligence. We have developed a multiagent multisensor-based security system or intelligent building. The system can be widely employed in daily life and can detect dangerous situations using sensors. The structure of the security system is divided into four parts, the fire detection/diagnosis agent, intruder detection/diagnosis agent, environment detection/diagnosis agent, and power detection/diagnosis agent. In this paper, we use an adaptive data fusion method in the fire detection/diagnosis agent and use a rule-based method in the intruder detection/diagnosis agent. We use statistical signal detection theory in the environment detection/diagnosis agent, and use a fault detection and isolation procedure (FDIP) in the power detection/diagnosis agent. The security system has a four-variety detection/diagnosis agent. Finally, we implement these methods using computer simulation and achieve quite satisfactory results.
Picosecond range switching of a GaAs avalanche transistor due to bulk carrier generation by avalanching Gunn domains (2004)

Superfast high current switching of a GaAs-based JBT in the avalanche mode has been achieved experimentally for the first time. A very fast reduction in the voltage across the transistor was observed (~ 200-300 ps) and the amplitude of the current pulses ranged from 2 to 130 A depending on the load resistance. It was observed experimentally that the switching occurs in a number of synchronized current channels with a characteristic diameter of <~10 microns. A 1D simulation code was developed and the switching transient for a single channel was simulated, with the external circuit incorporated into the simulations. Photon-assisted carrier transport and negative differential electron mobility were taken into account in the theoretical model. The former does not play an appreciable role in the 1D switching transient, although the latter determines superfast switching at extreme current densities (> 1 MA/cm<sup>2</sup>). Superfast switching occurs due to the appearance of a number of Gunn domains at any instant (up to ~ 20 domains across a collector region ~30 microns in thickness). These domains of huge amplitude (up to ~700 kV/cm) are moving towards the cathode and give rise to extremely high ionization rates across the volume of the channel in the n0 collector region. The simulations provide a fairly reliable interpretation of the experimentally observed switching time, which is shorter than that in Si avalanche transistors by a factor of ~15. The new device is fairly attractive, e.g. for feeding pulsed laser diodes when the current rise time should be shorter than the lasing delay.
Acoustic Based Rapid Blowout Mitigation in a Swirl Stabilized Combustor (2005)

This paper describes a method for efficiently detecting and preventing lean blow out (LBO) in a premixed, swirl stabilized combustor. The acoustic signal is processed to determine the real time LBO probability. This requires detection of localized extinction ‘events’ and rapid calculation of event frequency. As LBO probability increases, a proportional derivative controller actuates valves to redirect a fraction of the total fuel into a central, premixed pilot. The actuation increases the equivalence ratio in the stabilization region at a constant power setting and counters the flame lift associated with LBO. It is shown that the developed controller can prevent LBO even during rapid transients in equivalence ratio, φ.
Acute Traumatic Lateral Dislocation of the Patella: An Unusual Case Presentation (1982)

In this case report, a unique form of acute lateral dislocation of the patella is described, with medial patellar rotation on its vertical axis. Successful treatment required exerting a direct downward force with the knee extended on the bony margin of the lateral border of the patella, resulting in its rotation laterally to a neutral position. After 3 weeks in a cast followed by quadriceps exercises, uneventful recovery has occurred.
Effect of modified heat treatment on mechanical properties of 300M steel (1995)

AbstractAbstractThe effects of modified heat treatment (MHT) on the mechanical properties of 300M steel have been studied to assess MHT steel for possible ultrahigh strength applications. The microstructure of MHT steel has variable amounts of martensite, carbide free upper bainite, and retained austenite. This is produced by partial isothermal transformation at 593, 623, or 673 Kfor the required times, followed by oil quenching and subsequent tempering at 473 K after 1173 K austenitisation. The optimum combination of plane strain fracture toughness with other relevant mechanical properties was obtained when 50 vol.-% bainite was associated with tempered martensite and retained austenite for MHT at 593 and 623 K. The MHT steel transformed at 593 K showed improved plane strain fracture toughness over conventional quenched and tempered steel at a similar tensile strength level, with little change of percentage elongation and Charpy 2 mm V-notch impact energy. Compared with conventional quenched and tempered steel, the MHT steel transformed at 593 K had a dramatically improved plane strain fracture toughness owing to an increase in percentage elongation and Charpy V-notch impact energy, while the strength decreased somewhat.MST/1999
WIRELESS DATA TRANSMISSION OPTIONS IN ROTARY IN-DRILLING ALIGNMENT(R-IDA) SETUPS FOR MULTILATERAL OIL DRILLING APPLICATIONS (2014)

Conventional methods in multilateral drilling processes incorporate magnetometer-based surveying systems for determining the position and attitude of the bottomhole assembly (BHA). Magnetic surveying results in an increased weight of the BHA, higher cost due to shielding with bulky nonmagnetic collars and, more importantly, severely degraded performance due to unavoidable geomagnetic interferences such as metal and ore deposits in the vicinity. Micro-Electromechanical Systems (MEMS) based Inertial Navigation Systems (INS) have been proposed as an alternative to magnetic surveying for multilateral drilling. Previous studies have shown theoretically and experimentally that a Kalman filter-based In-Drilling Alignment (IDA) and its minimized version Rotary In-Drilling Alignment (R-IDA) successfully limit the accumulated error growth associated with the INS, compared to the traditional zero-velocity update (ZUPT) alignment method. A high performance wireless MEMS- based INS has been proposed for R-IDA alignment, the implementation simplicity and high accuracy of which could be very useful in multilateral drilling processes. Furthermore, this paper discusses the concept of wireless data transmission within drill pipes downhole in comparison to other existing or emerging methods. It is shown that wireless telemetry inside the drill pipes is potentially capable of transmitting up to 250,000 bits per second (bits/sec) with high reliability and low power consumption, which makes a drill string based local network for real- time downhole monitoring and control applications feasible.
A cluster of atypical Yersinia strains with a distinctive 16S rRNA signature (1997)

Thirty-eight bacterial isolates from raw milk samples in Queensland, Australia were identified as members of the genus Yersinia on the basis of biochemical profile, ability to hybridize with a genus-specific DNA probe, comparative 16S rDNA sequence analysis, and the presence of characteristic 16S rDNA signature nucleotides which occur in all Yersinia spp.Twentyfive of these isolates reacted with typing sera (O:22 or O:58) of Y. enterocolitica; the remainder were non-typable.None of the isolates displayed any of the phenotypic or genetic virulence-associated characteristics of Y. enterocolitica.Comparative 16S rDNA sequence analysis revealed that members of this group appear to represent a new sub-line within the genus Yersinia, most closely related to Y. frederiksenii hybridization group 2 (unnamed genomospecies 2).This finding was confirmed by DNA hybridization studies which indicated that the strains belonged to the unnamed genomospecies, Yersinia frederiksenii genomospecies 2, which is biochemically indistinguishable from Y. frederiksenii (Y.frederiksenii genomospecies 1).A 23nucleotide 16S rDNA signature stretch which characterised these strains was identified.
Low-Noise W-Band Amplifiers for Radiometer Applications Using a 70 nm Metamorphic HEMT Technology (2003)

W-band low-noise amplifier (LNA)MMICs have been developed using a 70 nm metamorphic HEMT (MHEMT)technology.The short gate length in combination with the high indium content of 80%in the channel lead to a maximum transconductance of 1500 ms/mm for a 2x30 µm device.This results in a transit frequency ft of 290 GHz.Two-and three-stage amplifiers were realized in coplanar waveguide technology (CPW)and achieved a small signal gain of 13 dB and 19 dB,respectively.The noise figure at room temperature of both LNAs was below 3 dB. The on-wafer measured output power at the P-1 dB compression point was 5 dBm.A modification of the three stage LNA showed a noise figure of 2.5 dB,with a small signal gain of 15 dB at 94 GHz.
Nonadiabatic scanning calorimeter (1998)

A high-resolution computerized calorimeter capable of fully automatic operation in either ac or relaxation modes is described. Emphasis is given to a new version of the relaxation technique in which the heater power is ramped linearly in time. This improvement results in superior performance and convenience in studying both first- and second-order phase transitions and allows quantitative evaluation of latent heats as well as pretransitional heat capacity variations. Examples are given for the use of this calorimeter in the study of liquid crystal phase transitions.
Fiber-optic interferometric point thermometer (1991)

Abstract A modulation technique suitable for short optical fiber interferometric sensors is presented. This is a passive technique that makes use of modal properties of highly birefringent fiber to generate quadrature output components. Experimental results are presented for 2 miniature, remote Fabry-Perot interferometers fabricated from 2 different types of highly birefringent fiber using this signal processing method.
Denitrogenation in Pregnancy (1990)

This study measured nitrogen washout in ten pregnant and nine non-pregnant women to understand better how pregnancy effects denitrogenation. Nitrogen concentration was monitored continuously while the women breathed 100 per cent O2 for three minutes and took four deep breaths of 100 per cent O2 using a circle anaesthesia system and 8 L·min−1 fresh gas flow. Parturients achieved 95 per cent denitrogenation significantly (P < 0.0005) faster than non-pregnant women (54.5 ± 17.8 vs 110.8 ± 35.7 sec). In parturients, denitrogenation for three minutes lowered expired N2 concentration to 1.0 ± 0.2 per cent while four deep breaths lowered it to 5.1 ± 1.7 per cent (P < 0.0001). This difference, while statistically significant, is predicted to supply only 10–15 sec of extra protection against hypoxaemia, and thus is probably not clinically significant. The authors conclude that either two minutes of tidal breathing or four deep breaths of 100 per cent O2 provide adequate denitrogenation and similar protection against apnoeic hypoxaemia in normal parturients.
Studies in 2-acetylaminofluorene carcinogenesis. II. The in vitro uptake of alanine-1-C14 by preneoplastic liver and hepatoma mitochondrial protein. (1954)

Summary 1.The stimulation of in vitro incorporation of C 14 -labeled amino acids into mitochondrial proteins by factors in the mitochondrial-free supernatant and by ATP has been confirmed. 2.Preneoplastic and hepatoma mitochondria showed increases of approximately 50 per cent and 200 per cent, respectively, in uptake activity when compared to normal liver preparations. 3.Limited but suggestive evidence has been noted of a wide divergence in the pattern of incorporation of C 14 between preneoplastic and normal preparations. 4.The enhanced incorporation has been discussed from the point of view of compatibility with the protein synthetic requirements of AAF carcinogenesis.
ChemInform Abstract: Enzyme‐Catalyzed Synthesis of O‐Glycopeptide Building Blocks. (1993)

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.
Analysis of physiological behavior using a causal model based on first principles (1983)

The objective of this research is to demonstrate a methodology for the design and use of a physiological model in a computer program that suggests medical decisions. The physiological model is based on first principles and facts of physiology and anatomy, and it includes inference rules for analysis of causal relations between physiological events. The model is used to analyze physiological behavior, identify the effects of abnormalities, suggest appropriate therapies, and predict the results of therapy. This methodology integrates heuristic knowledge traditionally used in artificial intelligence programs with mathematical knowledge traditionally used in mathematical modeling programs. In recognition of its origins in artificial intelligence and mathematical modeling, the system is named AI/MM. This paper briefly introduces the knowledge representation and examples of the system analysis of behavior in the domain of renal physiology.
<title>Study and realization of Si microcalorimeters for high-resolution spectroscopy</title> (1994)

We are developing Si-implanted thermistors to realize high resolution microcalorimeters. We plan to use these devices in an experiment for the determination of the neutrino mass. The measure implies the evaluation of the correct end-point energy of a beta spectrum with a calorimetric approach. Our study is devoted to outline the optimum fabrication process concerning performances and reproducibility. For such reasons we have realized Si thermistors with different concentration of dopant impurities and with different implant geometries. Tests are performed between 4.2 and 1.2 K using a pumped helium cryostat, and selected samples are characterized at very low temperatures in a dilution refrigerator. Good reproducibility of the devices is necessary for producing an array of detectors. At the same time suitable electronics are developed to optimize the detectors preamplifiers link: minimization of the parasitic capacitance is necessary to reduce the integration of signal and to maximize the speed response of the detector.
Mastering the art of war (2013)

How do video game skills develop, and what sets the top players apart? We study this question of skill through a rating generated from repeated multiplayer matches called TrueSkill. Using these ratings from 7 months of games from over 3 million players, we look at how play intensity, breaks in play, skill change over time, and other games affect skill. These analyzed factors are then combined to model future skill and games played; the results show that skill change in early matches is a useful metric for modeling future skill, while play intensity explains eventual games played. The best players in the 7-month period, who we call "Master Blasters", have varied skill patterns that often run counter to the trends we see for typical players. The data analysis is supplemented with a 70 person survey to explore how players' self-perceptions compare to the gameplay data; most survey responses align well with the data and provide insight into player beliefs and motivation. Finally, we wrap up with a discussion about hiding skill information from players, and implications for game designers.