gebhart/patrepeval huggingface dataset:
Autonomous Data-driven Model for Extraction of VCSEL Circuit-level Parameters (2022)

In recent years, a number of computationally efficient models have been developed that adequately describe the static and dynamic behavior of the Vertical Cavity Surface Emitting Laser (VCSEL). In order to correctly recreate the behavior of existing laser sources, a large number of physical parameters must be specified. Finding these unknown physical characteristics in experimental curves may be time-consuming, and mainly requires trial and error processes or regression analysis. Instead of manually analyzing experimental data to find the best VCSEL parameters, we propose a Machine Learning (ML) based solution to automate the process. The proposed approach exploits the parametric dataset obtained from Light-current and Small-signal modulation responses to extract the required model parameters. Excellent results are obtained in terms of relative prediction error.
Studies towards the synthesis of dictyolomides A and B, and 6-methoxydictyolomide (2013)

Leishmaniasis is a tropical disease caused by protozoa parasites of the genus Leishmania and remains a significant health issue in large part due to the lack of effective and affordable drugs and increasing resistance against existing drugs. 4-Quinolones, for example dictyolomides, have been reported as potential antileishmanial agents. In this work we describe the studies towards the synthesis of dictyolomides A and B, and 6- methoxydictyolomide which will be evaluated against Leishmania sp and determine the stereochemistry of the center 3’.
"CLEAN" PROPELLANTS FOR COMMERCIAL APPLICATIONS (1997)

Trends for solid propellant applications in the Netherlands during the last decade are described, especially focusing on new propellant formulations which are "clean". In 1985 TNO Prins Maurits Laboratory (TNO-PML) became involved in the development of pyrogenic devices for Ariane 5's Vulcain engine HM 60, which developed into a production programme of AN based turbine pump starters and igniters for the European Space Agency (ESA). During the development, it turned out that removing the hydrochloric acid has other advantages, e.g., less smoke in the rocket plume, while AN based formulations show better cook-off behaviour. Another application of "clean" propellant technology is the development of a new "environmentally friendly and human friendly" gas generator composition for an airbag. This composition is based on AN with triaminoguanidine -nitrate (TAGN) or nitroguanidine (NQ) and has the advantage over sodium azide (NaN3) based gas generators that less toxic and corrosive products and much less solid reaction products are formed. In a search for new "clean" high performance propellants, performed for the ESA, Hydrazinium Nitroformate (HNF) based propellants were identified as new interesting formulations, that offer a much higher specific impulse than obtained with conventional composite propellants. Under sponsorship of ESA and the Netherlands Agency for Aerospace Programs a research programme was initiated, aiming at experimentally demonstrating the increased performance of HNF based propellants.
The patient's perspective on breast radiotherapy: Initial fears and expectations versus reality (2018)

Breast RT is associated with misconceptions and fears. Patients' experiences with modern breast RT appear to be superior to expectations, and the majority of patients in the current study agreed that their initial negative impressions were unfounded. Cancer 2018;124:1673-81. © 2018 American Cancer Society.
Hydrogen Fuel Cell Engines and Related Technologies (2001)

The manual documents the first training course developed on the use of hydrogen fuel cells in transportation. The manual contains eleven modules covering hydrogen properties, use and safety; fuel cell technology and its systems, fuel cell engine design and safety, and design and maintenance of a heavy duty fuel cell bus engine; While different types of fuel cells and hybrid electric vehicles are presented; the system descriptions and maintenance procedures focus on proton-exchange-membrane (PEM) fuel cells with respect to heavy duty transit applications. Modules also provide additional information on use of hydrogen as well as safety guidelines for both hydrogen maintenance and fueling facilities. The course is part of a curriculum under development by the College of the Desert in support of a "Tech Prep Associate Degree" in Advanced Transportation Technologies. The program begins at high school level and progresses through a rigorous program including instruction in electronics, engine performance, alternative fuels and advanced power train technologies.\n
ChemInform Abstract: Perfluoroalkyl Migration in the Rearrangement of 4‐Perfluoroalkyl‐4‐quinols. (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.
Differential Expression of Neuronal Genes Defines Subtypes of Disseminated Neuroblastoma with Favorable and Unfavorable Outcome (2006)

Spontaneously regressing and progressing metastatic neuroblastoma differ by specific gene expression patterns, indicating distinct levels of neuronal differentiation and allowing for an improved risk estimation of children with disseminated disease.
Acute increase, stimulated by prostaglandin E 2 , in glucose absorption via the sodium dependent glucose transporter-1 in rat intestine (1999)

PGE2 acutely increased glucose and galactose absorption by the small intestine via the SGLT1, with cAMP serving as the second messenger. PGE2 acted directly on the enterocytes, as the stimulation was still observed in isolated enterocytes and RT-PCR detected mRNA for the cAMP-increasing PGE2 receptors EP2R and EP4R.
Development of Fast-Neutron Directional Detector for Fusion Neutron Profile Monitor at LHD (2016)

Fast-neutron directional detectors using scintillating optical fibers have been adopted for neutron emission profile measurement in magnetic confinement fusion devices. Because of their benefits of rapid response and directional properties to reduce restrictions on shielding, they are anticipated for installation in the Large Helical Device (LHD) of the National Institute for Fusion Science (NIFS). As described herein, the system design has been re-examined based on the results of recent experiments and simulations. Results show that fast neutrons with high energy of 14 MeV are attenuated by a self-shielding effect of scintillating fiber. Moreover, it has been demonstrated that the scintillation photons are attenuated in several centimeters before reaching the photon detector. The control of the photon transmission efficiency is important to enhance the directional property of the system. Along with reduced effects of the background gamma rays, adopting a thin scintillating fiber is effective. Further evaluation should be conducted to design a detector system considering the detecting efficiency, directional property, and gamma ray effect for application to an actual radiation field of the LHD.
Design and Analysis of a Reflectarray Using Slot Antenna Elements for Ka-band SatCom (2015)

This paper presents a folded reflectarray designed for Ka-band satellite communication applications. The array element is a dual-polarized slot antenna with multilayered PCB structure and is designed to operate at 29.5-30.8 GHz band for both transmitting and receiving with single linear polarization. Vias are employed to suppress the surface wave propagation and reduce the mutual coupling between adjacent array elements, for achieving a reflectarray with a wide scan angle range. An equivalent circuit model for the array element is developed and it agrees well with the EM simulation results. Several passive demonstrators consisting of 116 elements spaced by 0.5λ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">30</sub> <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">GHz</sub> were fabricated and measured. The experimental results show that the presented reflectarray is capable of steering the beam up to ±60° in both Eand H-planes with low cross-polarization level.
Are the Poor Digitally Left Behind? Indications of Urban Divides Based on Remote Sensing and Twitter Data (2018)

Every city is—quoting Plato—divided into two, one city of the poor, the other of the rich. In this study we test whether the economic urban divide is reflected in the digital sphere of cities. Because, especially in dynamically growing cities, ready-to-use comprehensive data sets on the urban poor, as well as on the digital divide, are not existent, we use proxies: we spatially delimit the urban poor using settlement characteristics derived from remote sensing data. The digital divide is targeted by geolocated Twitter data. Based on a sample of eight cities across the globe, we spatially test whether areas of the urban poor are more likely to be digital cold spots. Over the course of time, we analyze whether temporal signatures in poor urban areas differ from formal environments. We find that the economic divide influences digital participation in public life. Less residents of morphological slums are found to be digitally oriented (“are digitally left behind”) as compared to residents of formal settlements. However, among the few twitter users in morphological slums, we find their temporal behavior similar to the twitter users in formal settlements. In general, we conclude this discussion, this study exemplifies that the combination of both heterogeneous data sets allows for extending the capabilities of individual disciplines for research towards urban poverty.
Dodecagonal patterns in a Kerr-slice/feedback-mirror type optical system (1996)

Abstract We show that interaction of modes having different wave-numbers in a Kerr-slice/feedback-mirror type optical system with Fourier filter in the optical feedback leads to formation of new types of patterns. Results of numerical simulations are presented.
Robust downlink SINR balancing based on MMSE optimal CSI feedback (2008)

A robust signal-to-interference-plus-noise ratio (SINR) design is proposed that is based on fed back channel state information (CSI). The channel estimator, the quantizer, and the rank-reduction basis are jointly optimized to get a minimum mean square error (MMSE) optimal CSI feedback. Based on the CSI feedback, the transmitter can compute the conditional covariance matrices of the different channels that enable a balancing of the different SINRs on average. The robust SINR balancing algorithm shows good balancing properties also for the instantaneous SINR and clearly outperforms the non-robust SINR balancing approach.
Solution of the μτ problem in a-Si: H (1991)

Abstract The aim of the paper is to explain what we cali the μτ problem in undoped hydrogenated amorphous silicon (a-Si: H), that is the difference of about two orders of magnitude between the mobility-lifetime product (μτ)ss, deduced from steady-state photoconductivity and the mobility-lifetime product μτ cc deduced from time-of-flight (TOF) charge collections. First of all, anisotropy is excluded as a solution. Then primary photocurrent transients are studied by computer modelling, namely carrier thermalization after a laser pulse, the time dependence of drift mobility μ D and the deep-trapping time τD. We assume that multiple trapping is dominant and neglect tunnelling transitions. We demonstrate that, for anomalous dispersive transport, Hecht's formula cannot be used and outline how to deduce μτin this case. We show by computer modelling that μ D τ D deduced from TOF primary photocurrent transients is trap limited, independent of time and equal to μτ (product of free mobility and free lifetime). This allowed us to exclude another recently suggested solution of the μτ problem: the difference between transient and steady-state demarcation levels. We present extensive modelling of the steady-state secondary photocurrent, which is recombination limited. Computed free-carrier concentrations show that there are many more free electrons than holes. Computed lux-ampere characteristics are presented and their basie features confirmed by experimental results. Hole trapping is the bottleneck of recombination and, as a result, the free recombination lifetime of the electron (majority carrier) is much higher than that of the hole (minority carrier). The μτ problem is explained by the fact that photoconductivity is controlled by majority (recombination-limited) τRe, which represents many trapping events before recombination with a hole takes place and contrary to it TOF is controlled in principle by a single-trapping event. From steady-state photoconductivity and grating techniaue measurements the computed values for undoped a-Si:H, (μτ)e≈100(μτ)h, have been experimentally confirmed. Both these techniaues have been used also for slightly doped samples and elear anticorrelated changes in (μτ)e and (μτ)h demonstrated. The ratio (μτ)e/(μτ)h is independent of the number N db of dangling bonds because it is given by the position of Fermi level and effective correlation energy U eff only, neither of which is a function of N db. The method which allows U eff to be deduced is outlined. From this, two possible values are obtained: U eff≈0.2eV or U eff≈0 for undoped a-Si: H. It is shown that the most important parameter responsible for (μτ)e≈100(μτ)h is the dark Fermi Ievel, placed in undoped a-Si: H above the midgap.
Distribution System Reconfiguration Under Uncertain Load and Renewable Generation (2015)

Increasing penetration of variable loads and renewable generation will cause the conventional operation strategy of the distribution system to become less certain and effective. This paper presents a method of determining the minimum loss network configuration of a distribution system with uncertain load and renewable generation. A robust optimization model is proposed wherein the optimal decisions on network configurations and losses are derived in two subsequent steps. The first step enforces the radiality constraint before knowing the actual system loads and output level of renewable generation. Power flows are computed next to achieve minimum network losses considering the worst operating conditions over the uncertainty sets. A mixed-integer two-stage robust optimization formulation and a decomposition algorithm in a master-slave structure are proposed to solve the problem. Results of an illustrative example and two test systems are presented to demonstrate the proposed method.
Desarrollo de ventiladores mecánicos en Chile. Crónica de la iniciativa &#8220;Un Respiro para Chile&#8221;, durante la primera ola de la pandemia COVID-19 (2022)

At the beginning of the COVID-19 pandemic in Chile, in March 2020, a projection indicated that a significant group of patients with pneumonia would require admission to an Intensive Care Unit and connection to a mechanical ventilator. Therefore, a paucity of these devices and other supplies was predicted. The initiative "Un respiro para Chile" brought together many people and institutions, public and private. In the course of three months, it allowed the design and building of several ventilatory assistance devices, which could be used in critically ill patients.
Conversion of Pollutants in Dilute Aqueous Waste Streams to Useful Products:  a Potential Method Based on Phase-Transfer Catalysis (2003)

Many waste streams contain anions at low concentration in water. This paper describes results obtained when aqueous solutions of various anions at 1 wt % were subjected to reactions with alkyl and acyl halides without solvent. High yields of valuable products such as phenylacetonitrile, alkyl phenyl ethers, alkyl acrylate, and benzoyl cyanide were obtained at moderate temperatures and reaction times. The formation of byproducts deriving from reactions with large amounts of water was easily controlled. The method was successfully applied to selectively react and extract a target anion out of a mixture of anions.
Sequence Analysis and Expression Patterns Divide the Maize knotted1-Like Homeobox Genes into Two Classes (1994)

Randall Kerstetter, Erik Vollbrecht, Brenda Lowe, Bruce Veit, Judy Yamaguchi, Sarah Hake, Sequence Analysis and Expression Patterns Divide the Maize knotted1-Like Homeobox Genes into Two Classes, The Plant Cell, Vol. 6, No. 12 (Dec., 1994), pp. 1877-1887
Computer-controlled apparatus for interfacial electrochemical studies (1985)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComputer-controlled apparatus for interfacial electrochemical studiesLarry Cunningham and Henry FreiserCite this: Langmuir 1985, 1, 5, 537–541Publication Date (Print):September 1, 1985Publication History Published online1 May 2002Published inissue 1 September 1985https://pubs.acs.org/doi/10.1021/la00065a003https://doi.org/10.1021/la00065a003research-articleACS PublicationsRequest reuse permissionsArticle Views65Altmetric-Citations4LEARN 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
Ni-based silicides: material issues for advanced CMOS applications (2003)

This work investigates materials issues critical for the application of NiSi to CMOS fabrication. Kinetic studies of Ni 2 Si growth showed diffusion limited growth with activation energies of ∼1.5 eV. N implantation retarded the reaction while Ge pre-amorphization accelerated it. The mechanisms of thermal degradation of NiSi were studied. Thin films degraded morphologically with activation energies of ∼2.4 eV on n+ or p+ (100) Si and of ∼3 eV on n+poly-Si. Thick films degraded morphologically at low temperatures and by transformation to NiSi 2 at high temperatures, suggesting a higher activation energy for the latter mechanism. Transformation to NiSi 2 occurred at lower temperatures on poly-Si (700 °C) than on (100) Si. TEM cross-sections of agglomerated films showed flat surfaces with alternating NiSi and exposed Si, and very rough NiSi-silicon interfaces. Pt alloying stabilized NiSi films against morphological degradation. For 22 nm NiSi on n+ and on p+ (100) Si, addition of Pt improved thermal stability by 50 to 100 °C. The alloy silicide films degraded morphologically while still in the monosilicide phase with Pt remaining in solution.
Lung-Specifi c Expression of Mutant p53 as Mouse Model for Lung Cancer (2003)

The p53 tumor suppressor gene is the most commonly mutated gene in cancer (1,2) and is mutated in 50% non-small cell lung cancer (NSCLC) and 70% of small cell lung cancer (SCLC) (3). Mutations in p53 commonly reflect exposures to environmental carcinogens, e.g., cigarette smoke and lung cancer or aflatoxin and liver cancer. In support for tobacco smoking as a major risk factor for lung cancer, as the content of tar and nicotine per cigarette has dropped by more than two-thirds, there has been a concomitant change in the histologic type of lung cancer (4). While SCLC has persisted at about 20%, adenocarcinoma has increased to 45% with declines in squamous cell and large cell carcinoma. Thun and colleagues (5) have suggested that these changes are due to the design of the cigarette; e.g., filter-tip cigarettes are inhaled more deeply than earlier, unfiltered cigarettes (more toxic), and deeper inhalation transports tobacco-specific carcinogens more distally toward the bronchoalveolar junction where adenocarcinomas often arise. In human lung cancer, both the frequency and type of mutations in the p53 gene can act as fingerprints providing information about external etiological agents, carcinogen exposure, and host factors affecting the carcinogenesis process (6).
Implementation Research Methodologies for Achieving Scientific Equity and Health Equity (2019)

Implementation science has great potential to improve the health of communities and individuals who are not achieving health equity. However, implementation science can exacerbate health disparities if its use is biased toward entities that already have the highest capacities for delivering evidence-based interventions. In this article, we ex­amine several methodologic approaches for conducting implementation research to ad­vance equity both in our understanding of what historically disadvantaged populations would need—what we call scientific equi­ty—and how this knowledge can be applied to produce health equity. We focus on rapid ways to gain knowledge on how to engage, design research, act, share, and sustain successes in partnership with communities. We begin by describing a principle-driven partnership process between community members and implementation researchers to overcome disparities. We then review three innovative implementation method paradigms to improve scientific and health equity and provide examples of each. The first paradigm involves making efficient use of existing data by applying epidemiologic and simulation modeling to understand what drives disparities and how they can be overcome. The second paradigm involves designing new research studies that include, but do not focus exclusively on, popula­tions experiencing disparities in health domains such as cardiovascular disease and co-occurring mental health conditions. The third paradigm involves implementation research that focuses exclusively on popula­tions who have experienced high levels of disparities. To date, our scientific enterprise has invested disproportionately in research that fails to eliminate health disparities. The implementation research methods discussed here hold promise for overcoming barri­ers and achieving health equity.Ethn Dis. 2019;29(Suppl 1):83-92; doi:10.18865/ ed.29.S1.83.
Estimation of total interference power by clustering multiple wireless nodes (2021)

For effective computation of the total amount of interference from multiple nodes located in a wide area, we propose a scheme clustering multiple interference nodes and estimating the total interference power of the cluster. The total interference power is obtained by adding a margin to a reference power of limited number of representative nodes. In the scheme, the selection of the representative nodes is an important factor deciding frequency utilization efficiency. In the paper, we evaluated the amount of the excessively estimated power of several determination methods of the reference power by simulations and experiment. As a result, we show a method to determine the reference power with smaller overestimation.
Fluid Mechanics with Engineering Applications (1965)

Properties of fluids fluid statics basis of fluid flow energy considerations in steady flow momentum and forces in fluid flow similitude and dimensional analysis steady incompressible flow in pressure conduits forces on immersed bodies steady flow in open channels fluid measurements unsteady-flow problems steady flow of compressible fluids idea/flow maths hydraulic machinary - pumps hydraulic machinary - turbines.