gebhart/patrepeval huggingface dataset:
Comparison of Mobile Radio Transmission at 150, 450, 900, and 3700 Mc (1952)

Based on a series of experiments, a comparison is made of the transmission performance of 150, 450, 900, and 3700 mc in a mobile radiotelephone type of service. This comparison indicates that 450 mc is superior transmission-wise to the presently used 150-mc band in urban and suburban areas. In fact a broad optimum in performance falls in the neighborhood of 500 mc It is concluded that this range of frequencies would be well suited for providing coverage to meet the large scale needs which are anticipated in and around metropolitan areas. Although higher frequencies are less desirable, the tests indicate that 900 mc is somewhat to be favored over 150 mc from a transmission standpoint if full use is made of the possible antenna gain. Above this frequency, transmission performance falls off even assuming the maximum practical antenna gain. Transmission at 3700 mc suffers an additional impairment in that the fluctuations in received carrier level occur at an audible rate as the mobile unit moves at normal speeds. It is concluded that while transmission above roughly 1000 mc for these services is not impossible, it would be decidedly more difficult to employ these frequencies satisfactorily.
A systematic study to determine the extent of gene silencing in<i>Nicotiana benthamiana</i>and other Solanaceae species when heterologous gene sequences are used for virus‐induced gene silencing (2007)

Virus-induced gene silencing (VIGS) is a rapid and robust method for determining and studying the function of plant genes or expressed sequence tags (ESTs). However, only a few plant species are amenable to VIGS. There is a need for a systematic study to identify VIGS-efficient plant species and to determine the extent of homology required between the heterologous genes and their endogenous orthologs for silencing. Two approaches were used. First, the extent of phytoene desaturase (PDS) gene silencing was studied in various Solanaceous plant species using Nicotiana benthamiana NbPDS sequences. In the second approach, PDS sequences from a wide range of plant species were used to silence the PDS gene in N. benthamiana. The results showed that tobacco rattle virus (TRV)-mediated VIGS can be performed in a wide range of Solanaceous plant species and that heterologous gene sequences from far-related plant species can be used to silence their respective orthologs in the VIGS-efficient plant N. benthamiana. A correlation was not always found between gene silencing efficiency and percentage homology of the heterologous gene sequence with the endogenous gene sequence. It was concluded that a 21-nucleotide stretch of 100% identity between the heterologous and endogenous gene sequences is not absolutely required for gene silencing.
Dynamics and Viscoelastic Effects in Block Copolymers: Real and Simulated Systems (2000)

Polymer blends are the simplest polymer mixtures that can result in an enhance­ ment of the desired properties that are exhibited by the individual components and thus to important applications. Block copolymers, on the other hand, are formed by the covalent bonding of two or more polymers. This combination is nontrivial and requires specialized chemistry, but it can be performed in different ways, re­ sulting in linear and nonlinear copolymers (star, graft, miktoarm stars, etc.). In all cases, the most significant factor in determining the rich block copolymer phase behavior is the covalent bond that restricts the macrophase separation of chemi­ cally dissimilar blocks.
Is This Child Dehydrated? (2004)

The initial assessment of dehydration in young children should focus on estimating capillary refill time, skin turgor, and respiratory pattern and using combinations of other signs. The relative imprecision and inaccuracy of available tests limit the ability of clinicians to estimate the exact degree of dehydration.
Calibration of the methanol and glycol nuclear magnetic resonance thermometers with a static thermistor probe (1968)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCalibration of the methanol and glycol nuclear magnetic resonance thermometers with a static thermistor probeAnthony L. Van GeetCite this: Anal. Chem. 1968, 40, 14, 2227–2229Publication Date (Print):December 1, 1968Publication History Published online1 May 2002Published inissue 1 December 1968https://pubs.acs.org/doi/10.1021/ac50158a064https://doi.org/10.1021/ac50158a064research-articleACS PublicationsRequest reuse permissionsArticle Views1039Altmetric-Citations450LEARN 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
Development of a multi-antigenic SARS-CoV-2 vaccine candidate using a synthetic poxvirus platform (2020)

Modified Vaccinia Ankara (MVA) is a highly attenuated poxvirus vector that is widely used to develop vaccines for infectious diseases and cancer. We demonstrate the construction of a vaccine platform based on a unique three-plasmid system to efficiently generate recombinant MVA vectors from chemically synthesized DNA. In response to the ongoing global pandemic caused by SARS coronavirus-2 (SARS-CoV-2), we use this vaccine platform to rapidly produce fully synthetic MVA (sMVA) vectors co-expressing SARS-CoV-2 spike and nucleocapsid antigens, two immunodominant antigens implicated in protective immunity. We show that mice immunized with these sMVA vectors develop robust SARS-CoV-2 antigen-specific humoral and cellular immune responses, including potent neutralizing antibodies. These results demonstrate the potential of a vaccine platform based on synthetic DNA to efficiently generate recombinant MVA vectors and to rapidly develop a multi-antigenic poxvirus-based SARS-CoV-2 vaccine candidate.
Femtosecond terahertz time-domain spectroscopy at 36 kHz scan rate using an acousto-optic delay (2016)

We present a rapid-scan, time-domain terahertz spectrometer employing femtosecond Er:fiber technology and an acousto-optic delay with attosecond precision, enabling scanning of terahertz transients over a 12.4-ps time window at a waveform refresh rate of 36 kHz, and a signal-to-noise ratio of 1.7 × 105/Hz. Our approach enables real-time monitoring of dynamic THz processes at unprecedented speeds, which we demonstrate through rapid 2D thickness mapping of a spinning teflon disc at a precision of 10 nm/Hz. The compact, all-optical design ensures alignment-free operation even in harsh environments.
The Impact of Transformational Leadership on Leader-Follower Work Value Congruence (2013)

This study builds on the theory that transformational leadership impacts perceptions of leader-follower value congruence. The study examines intrinsic, altruistic, and social work values in a sample of 150 workers in the United States. The hypotheses tested that different levels of transformational leadership, as perceived by followers, are positively related to follower perceptions of leader-follower intrinsic, altruistic, and social work value congruence. Utilizing hierarchical multiple regression, the findings indicate that  levels of perceived transformational leadership are positively related to higher levels of perceived leader-follower intrinsic, altruistic, and social work value congruency. This study used four different measurement tools to test these hypotheses and controlled for task-oriented behaviors, tenure with supervisor as well as race, gender, and age similarity with supervisor. The findings suggest that organizations involved in a restructuring or reorganization due to either internal or external circumstances should emphasize developing leaders’ transformational leadership behaviors in order to capture benefits related to value congruency.
Tilden Lecture. Some uses of silicon compounds in organic synthesis (1981)

I. Fleming, Chem. Soc. Rev., 1981, 10, 83 DOI: 10.1039/CS9811000083
Dielectric and Optical Measurements for Some Compounds Exhibiting an Is-Ch-SmC* Phase Transition Sequence (1988)

Abstract The Isotropic—Cholesteric—Chiral Smectic C—Crystal phase transition sequence for some terminal alkoxy derivatives of 2,2'-dihydroxybenzalazine has been studied. Dielectric and optical measurements for the compounds with n = 7, 8, 9 and 10 are reported. The low-frequency dielectric anisotropy is determined for the chiral meso-phases and the results are analysed as a function of the terminal chain length. The helical pitch values and tilt angles in the chiral smectic C phases are found to exhibit some peculiar characteristics which are qualitatively different from those of the materials undergoing the more fully studied smectic A—chiral smectic C phase transition.
Psychiatric morbidity in cohabitants of community-dwelling elderly depressives (1998)

Objective. To determine the effect of living with a depressed elderly individual on the mental health of the cohabitant carer. Method. Case-control study comparing rates of psychiatric morbidity in cohabitants of depressed versus well elderly. Setting. Community sample. Participants. 44 couples, one partner with AGECAT depression, and 44 couples, one partner diagnosed well by AGECAT. Cohabitants were matched for gender, age and physical health status. All subjects were aged 65 years and over. Main outcome measure. Odds ratio of case or subcase depression and/or neurotic disorder in cohabitants of depressed elderly. Results. 28/44 (64%) cohabitants of depressed subjects were cases (N=9) or subcases (N=19) of depression, neurotic disorder or both, compared to 13/44 (29%) cases (N=1) or subcases (N=12) in cohabitants of well subjects (OR=6·33, 95% CI (1·7–18·3), p=<0·001). Conclusion. This study reveals high levels of psychiatric morbidity, primarily depression and anxiety symptoms, in the cohabitants of depressed community-dwelling elderly. This suggests that living with a depressed elderly person may have an adverse effect on the mental health of the cohabitant. Increased recognition of the potential psychiatric morbidity in this group is needed.Copyright © 1998 John Wiley & Sons, Ltd.
ASTER as a source for topographic data in the late 1990s (1998)

Topography is a fundamental Earth characteristic that can be measured for studies of the land surface. The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) onboard the EOS-AM1 platform will acquire along-track stereo data for topographic mapping. ASTER is capable of recording 771 digital stereo pairs per day, each covering 60/spl times/60 km on the ground, at 15-m resolution, with a base-to-height ratio of 0.6. According to present plans, approximately 30 digital elevation models (DEMs), accurate to within /spl plusmn/7 to /spl plusmn/50 m (RMSE/sub z/) will be produced daily by processing facilities in Japan and the United States. The Land Processes Distributed Active Archive Center (LP-DAAC) at the United States Geological Survey's (USGS's) EROS Data Center (EDC) will emphasize the use of automated stereocorrelation procedures to produce absolute DEMs tied to ground control. During the six-year mission, ASTER has the potential to provide a coherent, digital stereo data set covering all of the Earth's land surface. At minimum, ASTER DEMs will augment topographic data from other sources. Results of simulations of ASTER stereo data using existing satellite and aircraft data over validation sites in Huntsville, AL, and Iguala, Mexico, illustrate the value of high-resolution ASTER DEMs and how actual ASTER DEMs will be validated.
Optimum space‐time transmission for a high<i>K</i>factor wireless channel with partial channel knowledge (2004)

Abstract We study the optimum transmission scheme that maximizes ergodic capacity of a 2 × 1 multiple‐input single‐output (MISO) system, when the channel knowledge at the transmitter is characterized by a known gain ratio and a known probability density function (PDF) of the phase shift between antennas. Such a channel scenario can arise in a forward link at the base station when there is a single direct path propagation. We show that the optimum transmit solution is beamforming on the mean value of the phase shift with unequal power input to the antennas. When the phase is completely unknown, the solution reduces to a single antenna transmission. Copyright © 2004 John Wiley & Sons, Ltd.
A framework for simulating combined OLTP and OLAP workloads (2009)

OLTP and OLAP systems are thought of as two different domains despite sharing the same base data set to operate on. The data set only differs in granularity and logical layout. Serious changes in the development of hardware and database systems have occurred since the separation of analytical systems from the transactional systems in the 1990's. As a result, the decision to set up a separate domain for OLAP applications has to be reconsidered. In this paper we propose a configurable simulation framework that can be used to validate existing database systems and their ability to handle both workloads in parallel. The framework uses a benchmark defined for a combined OLTP and OLAP workload based on real enterprise data.
Anti-inflammatory activity of an imidazopyridine derivative (miroprofen). (1981)

Anti-inflammatory activity of 2-[p-(2-imidazo[1,2-a]pyridyl) phenyl]propionic acid (Y-9213, miroprofen) was studied on various experimental models. Miroprofen was found to be as active as indomethacin against the exudative inflammation such as pleuritis in rats induced by Evans blue-carrageenin and the peritonitis in mice induced by acetic acid, and against the local Shwartzman reaction in rabbits. Miroprofen also inhibited the formation of edema induced by carrageenin or kaolin in rats' paws at lower doses. Against the proliferation of connective tissues, miroprofen showed the inhibitory action at higher doses. The ulcerogenic activity of miroprofen in rats was less potent than that of indomethacin, and as active as that of phenylbutazone. These findings indicate that miroprofen may be more effective in suppressing pain responses and acute inflammation accompanied with increased vascular permeability.
Papel de la ruta de p38mapk en modelos de patología sarcomatoide: implicaciones en la biología tumoral y terapia (2019)

El sarcoma es un tipo de cancer que se desarrolla en ciertos tejidos como los huesos o los musculos. Aproximadamente el 1% de los tumores en adultos y entre el 15 y el 20% de los tumores infantiles son sarcomas. Sin embargo, los protocolos de diagnostico y las terapias disponibles carecen de eficacia en muchos casos. Por lo tanto, es necesario realizar mas estudios para desarrollar terapias mas precisas sin efectos secundarios no deseados, sobre todo si pensamos en la repercusion social debido a la alta prevalencia del sarcoma en grupos especialmente vulnerables como los ninos y adolescentes. 
La senalizacion celular controlada por MAPKs ha estado implicada en el cancer y su terapia casi desde su descubrimiento. El objetivo principal de esta tesis doctoral es estudiar el papel de la ruta de senalizacion de p38MAPK en diversos aspectos de la patologia del sarcoma, desde los efectos en la biologia tumoral hasta la respuesta a la quimio/radioterapia.
Para ello, hemos establecido sarcomas in vivo en un modelo de raton C57BL/6J mediante una inyeccion intramuscular del carcinogeno 3MC, del que posteriormente hemos derivado lineas celulares. La caracterizacion inmunohistoquimica realizada mostro que los tumores obtenidos son sarcomas pleomorficos indiferenciados consistentes con un leiomiosarcoma en patologia humana. Al utilizar estas lineas celulares de raton, asi como lineas celulares derivadas de sarcomas humanos, observamos que la falta de p38α modula negativamente la formacion de tumores en los ensayos de xenotrsplante. Nuestros resultados tambien mostraron que la ausencia de p38α correlaciona con un comportamiento resistente en respuesta a la gemcitabina a traves de un bloqueo en la respuesta a la apoptosis. Finalmente, hemos concluido que el efecto radiosensibilizador asociado a la gemcitabina se debe a p38β y no a p38α.
Por lo tanto, todas las evidencias apoyan el papel definitivo de la ruta de senalizacion de p38MAPK, siendo clave en la biologia del sarcoma y en la respuesta terapeutica a la gemcitabina, en la que la ablacion de la via de p38MAPK parece ser un mecanismo clave que aun necesita ser investigado mas profundamente para su uso clinico futuro. 
En resumen, el proyecto actual nos ha permitido determinar la implicacion de la ruta de p38MAPK en el desarrollo del sarcoma y su terapia y proponer que la caracterizacion de las alteraciones de esta via de senalizacion puede ayudar a desarrollar nuevos biomarcadores y terapias individualizadas mas eficaces.
Using remote installation services for windows to streamline installations in the UTPB computer science research lab (2006)

The Computer Science Research Lab at The University of Texas of the Permian Basin (UTPB) is operated by three part-time student assistants with minimal faculty supervision. This lab supports seven Windows and Sun Solaris servers and approximately thirty workstations within one subnet. Installing updates and new software on each workstation became very time consuming, so research was done on the Remote Installation Services (RIS) included with Windows 2003 Server add-on components. At first, it was difficult to get the RIS component to work within the domain environment because the inaccuracies of provided documentation caused many unanticipated problems. There were also problems with various hardware configurations on the different workstations, such as hyper-threaded processors on limited workstations. After a year of diligent effort, we have filled in the blanks in the provided documentation and have successfully implemented the RIS component. If a workstation has problems, we just reinstall the entire operating system, complete with customized programs, security settings, and operating system updates from a list provided by the server and little manual intervention is needed to start this process. Unattended installation scripts will provide answers to the server and the client in regards to where files will be stored and what settings the workstation will have when the process has been completed. The paper will discuss the procedure for setting up the RIS component, including the needed modifications/additions to the available RIS documentation.
An analysis-by-synthesis linear predictive model for narrowband speech coding (2002)

An analysis-by-synthesis linear predictive model for narrowband speech coding is proposed. By introducing a perceptually weighted distortion measure between the original speech and the reconstructed speech, both the voiced/unvoiced decision and the pitch estimation/tracking are implicitly optimized. The excitation model includes two codebooks. The unvoiced codebook contains a collection of random sequences, and the voiced codebook contains a pitch synthesizer with a different pitch period and pitch gain. A 2.4-kb/s and a 1.2-kb/s speech coder are used as examples. An efficient method for closed-loop spectrum filter analysis is presented.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Active-Metal Soldering of Crystalline Quartz (1961)

Very strong hermetic seals can be made to quartz crystals using a hydride of titanium or zirconium and a solder composed of copper-bearing lead or indium.
Mineral Scale Control in a CO2 Flooded Oilfield (2001)

Abstract This paper presents a case study of improving scale inhibition treatments in the Sharon Ridge Canyon Unit (SRCU), West Texas in response to the increased scaling conditions that has arisen from carbon dioxide (CO2) injection into the oil reservoir. In anticipation of increased scale deposition, a proactive approach was taken by carrying out a comprehensive field system analysis and scale survey prior to the commencement of CO2 flooding at SRCU. This analysis/survey was intended to assess the new situation and come up with a cost effective scale treatment program. A laboratory evaluation of a number of scale inhibitors was then carried out. Based on our understanding of the problem and the lab evaluation results, a new scale inhibitor and a new chemical treatment program were developed and implemented in the field. This paper describes the system analysis/scale survey and highlights its importance in understanding the changing situation and the new challenges in scale inhibition arising from CO2 flood. The laboratory evaluation for identifying the most suitable and cost-effective inhibitor is then briefly described. The paper then discusses the new scale inhibition treatment program and scale monitoring program. The field results from implementing the new treatment program are presented and discussed. Owing to the proactive approach and the improved inhibitor and treatment, the field production system and water re-injection system have not been troubled with scale deposition.
Temperature-Compensated Force/Pressure Sensor Based on Multi-Walled Carbon Nanotube Epoxy Composites (2015)

In this study, we propose a multi-walled carbon nanotube epoxy composite sensor for force and pressure sensing in the range of 50 N-2 kN. A manufacturing procedure, including material preparation and deposition techniques, is proposed. The electrode dimensions and the layer thickness were optimized by the finite element method. Temperature compensation is realized by four nanocomposites elements, where only two elements are exposed to the measurand. In order to investigate the influence of the filler contents, samples with different compositions were prepared and investigated. Additionally, the specimens are characterized by cyclical and stepped force/pressure loads or at defined temperatures. The results show that the choice of the filler content should meet a compromise between sensitivity, temperature influence and noise behavior. At constant temperature, a force of at least 50N can be resolved. The measurement error due to the temperature influence is 150N in a temperature range of -20°C-50°C.
Isolation of<i>Salmonella typhimurium</i>Tn<i>5</i>Mutants Defective for Survival on Egg Shell Surface Using Transposon Footprinting (2003)

The objective of this study was to screen the genome of Salmonella typhimurium for genes potentially required for survival on egg shell surfaces using a novel transposon footprinting method based on a previously developed Tn5 mutagenesis technique. Since the amplified DNA fragment length should usually be unique for each mutant, the polymerase chain reaction products separated on an agarose gel generate a transposon footprint with each band in the footprint representing the corresponding Tn5 mutant. By comparing the footprints from the pools of S. typhimurium Tn5 mutants before and after inoculation on egg shell surfaces, Tn5 mutants not recovered after selection were rapidly identified for potential isolation and genetic analysis.
Association of ADAM33 Gene Polymorphisms with Keloid Scars in a Northeastern Chinese Population (2014)

Our data suggest that the ADAM33 polymorphisms may be associated with keloid scars in the northeastern Chinese population.