gebhart/patrepeval huggingface dataset:
Photosensitization of composite metal oxide semiconductor films (1997)

Abstract New approach of surface modification consisting on mixing SnO 2 and TiO 2 colloids and packing them as a composite film (SnO 2 ‐TiO 2 ) on a conducting glass surface has led to the increased sensitized photocurrent quantum yields. The photoinjected electrons from the sensitizer into TiO 2 are quickly transferred into lower lying conduction band of SnO 2 carriers thus promoting the charge separation. High internal photocurrent quantum yield for CdS film as sensitizer, approaching unity (φ = 95%), has been obtained. In addition, composite SnO 2 ‐TiO 2 nanocrystalline films improve the charge separation in adsorbed bis(2,2′‐bipyridine)(2,2′‐bipyridine‐4,4′‐dicarboxylic acid) ruthenium complex (Ru(II)) too. Higher internal photocurrent quantum yield (φ = 92%) has been obtained for Ru(II) by replacing SnO 2 carriers against composite SnO 2 ‐TiO 2 particles in the film. On the other hand, the later composition does not show any increase in the photovoltage.
The Engineering Art Of Solid State Laser Pump Cavity Design (1986)

Cavity designs are grouped according to the mean power dissipated in them. Specific models for specular and diffuse cavities are presented and reflector materials compared. The determination of flow tube dimensions and prediction of laser rod temperature is given. Rod and lamp mounting techniques are discussed.
Hybrid feedforward-feedback active noise control for circumaural headsets (2004)

Traditional stability-performance tradeoffs pose limitations on active noise reduction (ANR) using feedback control, which are evident in circumaural communication headsets. In these systems, the cavity resonant behavior necessitates low feedback gains, redcing performance. Feedforward ANR using a Lyapunov-tuned least-mean-square filter dramatically enhances noise reduction performance compared with feedback ANR [Cartes et al., J. Acoust. Soc. Am. 111, 1758–1771 (2002); Collier et al., NOISECON (2003)]. However, feedforward performance is sensitive to the noise source stationarity, and the frequency-dependent forward path gain reduces stability margins. This paper presents experimental results for a hybrid feedforward-feedback ANR system, which enhances performance and gain margins for both stationary and nonstationary noise. Algorithms are optimized and measurements are performed with Thayer’s rapid prototyping system and associated low-frequency acoustic test cell using a circumaural hearing protector. In the frequency range 50–800 Hz, the hybrid system provides an average of 27 dB active noise reduction (40 dB total) for tonal noise and 17 dB reduction (32 dB total) for nonstationary noise. Performance below 100 Hz improves by as much as 15 dB over that of individual control components, and gain margin of the hybrid system improves substantially over individual feedforward or feedback components.
Status and review of two-dimensional carrier and dopant profiling using scanning probe microscopy (2000)

An overview of the existing two-dimensional carrier profiling tools using scanning probe microscopy includes several scanning tunneling microscopy modes, scanning capacitance microscopy, Kelvin probe microscopy, scanning spreading resistance microscopy, and dopant selective etching. The techniques are discussed and compared in terms of the sensitivity or concentration range which can be covered, the quantification possibility, and the final resolution, which is influenced by the intrinsic imaging resolution as well as by the response of the investigated property to concentration gradients and the sampling volume. From this comparison it is clear that, at present, none of the techniques fulfills all the requirements formulated by the 1997 Semiconductor Industry Association roadmap for semiconductors [National Technology Roadmap for Semiconductors (Semiconductor Industry Association, San Jose, CA, 1997)]. Most methods are limited to pn-junction delineation or provide a semiquantitative image of the differently doped regions. However, recent comparisons have shown that the techniques can provide useful information, which is not accessible with any other method.
Complex permittivity measurements of low-loss microwave ceramics employing higher order quasi TE<sub>0<i>np</i></sub>modes excited in a cylindrical dielectric sample (2005)

Higher order quasi TE0np modes have been used for precise measurements of permittivity and dielectric loss tangent of low-loss dielectric ceramics versus frequency in the microwave frequency range. It has been shown that, using this technique, dielectrics having arbitrary permittivity value and dielectric loss tangent values in the range 10 −6 –10 −2 can be measured with relative uncertainties below 0.5% for real permittivity and below 5% for dielectric losses. Several dielectric materials have been measured including singlecrystal quartz, single-crystal sapphire and the low-loss microwave ceramics BMT, BZT and BZNT.
Ring-Opening Copolymerization of (<i>R</i>)-β-Butyrolactone with Macrolide:  A New Series of Poly(Hydroxyalkanoate)s (1999)

ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTRing-Opening Copolymerization of (R)-β-Butyrolactone with Macrolide: A New Series of Poly(Hydroxyalkanoate)sYoji Hori, Hideyuki Hongo, and Toshimitsu HagiwaraView Author Information Central Research Laboratory, Takasago International Corporation, 1−4−11, Nishi-Yawata, Hiratsuka-City, Kanagawa 254-0073, Japan Cite this: Macromolecules 1999, 32, 10, 3537–3539Publication Date (Web):April 24, 1999Publication History Received30 November 1998Revised16 March 1999Published online24 April 1999Published inissue 1 May 1999https://pubs.acs.org/doi/10.1021/ma981846ehttps://doi.org/10.1021/ma981846erapid-communicationACS PublicationsCopyright © 1999 American Chemical SocietyRequest reuse permissionsArticle Views344Altmetric-Citations25LEARN 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 SUBJECTS:Copolymerization,Copolymers,Hydrocarbons,Polymers,Tensile strength Get e-Alerts
Raúl Ruiz, cineasta composible: RUIZ, Raúl (2013): "Poéticas del cine". Santiago de Chile: Ediciones Universidad Diego Portales (2014)

Although TAAS is an uncommon occurrence it should be considered a differential for any trauma patient that is presenting with signs of a cranial cervical myelopathy. CT and MRI have been shown to be useful to identify the extent of injuries and to facilitate surgical planning. With appropriate care, these dogs can have an excellent prognosis.
Functionalization of 3β,28-lupanediol diacetate with chromium(VI) oxide (1991)

The oxidation of 3β,28-lupanediol diacetate ( I ) with chromium( VI ) oxide gives low yields of products with functional groups in the ring E as products of hydroxylation at the 19β position ( IV, VI , and IX ) and the 11-ketone VII which has been transformed into other lupane derivatives with an oxygen functional group at 11 position ( VIII, XIII - XV ) or with a 9(11)-double bond ( XVI, XVII ). Structure of the compounds prepared has been verified by their 1 H and 13 C NMR spectra as well as by their mass spectra.
Faecal microbial flora and disease activity in rheumatoid arthritis during a vegan diet (1997)

To clarify the role of the faecal flora in the diet-induced decrease of rheumatoid arthritis (RA) activity, 43 RA patients were randomized into two groups: the test group to receive living food, a form of uncooked vegan diet rich in lactobacilli, and the control group to continue their ordinary omnivorous diets. Based on clinical assessments before, during and after the intervention period, a disease improvement index was constructed for each patient. According to the index, patients were assigned either to a group with a high improvement index (HI) or to a group with a low improvement index (LO). Stool samples collected from each patient before the intervention and at 1 month were analysed by direct stool sample gas-liquid chromatography of bacterial cellular fatty acids. This method has proved to be a simple and sensitive way to detect changes and differences in the faecal microbial flora between individual stool samples or groups of them. A significant, diet-induced change in the faecal flora (P = 0.001) was observed in the test group, but not in the control group. Further, in the test group, a significant (P = 0.001) difference was detected between the HI and LO categories at 1 month, but not in the pre-test samples. We conclude that a vegan diet changes the faecal microbial flora in RA patients, and changes in the faecal flora are associated with improvement in RA activity.
Power control and capacity analysis for a packetized indoor multimedia DS-CDMA network (2000)

This paper proposes a packetized indoor wireless system using direct-sequence code-division multiple-access (DS-CDMA) protocol. The indoor radio environment is characterized by slow Rayleigh fading with or without lognormal shadowing. The system supports multimedia services with various transmission rates and quality of service (QoS) requirements and allows for seamless interfacing to asynchronous transfer mode (ATM) broadband networks. All packets are transmitted with forward error correction (FEC) using convolutional code for voice packets and Bose-Chaudhuri-Hocquenghem (BCH) code for data packets with an automatic retransmission request (ARQ) protocol and for video packets without ARQ. A queueing model is used for servicing data transmission requests. A power control algorithm is proposed for the system, which combines closed-loop power control with channel estimation to give the best performance. The cell capacity of each traffic type and various multimedia traffic configurations in both single-cell and multiple-cell networks are evaluated theoretically under the assumption of perfect power control. The effect of power control imperfection on the capacity using the proposed power control algorithm is investigated by computer simulation.
Update on Abuse-Resistant and Abuse-Deterrent Approaches to Opioid Formulations (2009)

The number of opioid analgesic prescriptions has increased since 1990. Opioids are being prescribed for longer periods of time for both cancer- and noncancer-associated moderate to severe chronic pain. Concurrent with the increased prescribing of opioids has been an increase in their diversion from prescribed use and their abuse; frequently, this abuse occurs after the opioid analgesic has been physically or chemically manipulated to increase the concentration or bioavailability of the active ingredient. Formulations of opioids have been designed to resist the extraction of the active opioid from prescribed products through the incorporation of physical barriers or to deter the reinforcing effects of opioids through the incorporation of antagonists or other ingredients that only become active when the analgesic is used improperly. However, none of these formulations are currently commercially available in the United States. This paper describes the formulations now under development and their potential clinical utility and impact on society. These emerging opioid formulations designed to reduce the risk of misuse and/or abuse may be useful to physicians in meeting the important goals of maximizing pain relief and minimizing prescription opioid abuse.
Iceberg Discharges into the North Atlantic on Millennial Time Scales During the Last Glaciation (1995)

High-resolution studies of North Atlantic deep sea cores demonstrate that prominent increases in iceberg calving recurred at intervals of 2000 to 3000 years, much more frequently than the 7000-to 10,000-year pacing of massive ice discharges associated with Heinrich events. The calving cycles correlate with warm-cold oscillations, called Dansgaard-Oeschger events, in Greenland ice cores. Each cycle records synchronous discharges of ice from different sources, and the cycles are decoupled from sea-surface temperatures. These findings point to a mechanism operating within the atmosphere that caused rapid oscillations in air temperatures above Greenland and in calving from more than one ice sheet.
A Theory of Radio Scattering in the Troposphere (1950)

The theory of scattering by a turbulent medium is applied to scattering of radio waves in the troposphere. In the region below the horizon of the transmitter, energy is received (1) by diffraction round the curved surface of the earth (modified as appropriate by atmospheric refraction), and (2) by scattering from turbulence in the region of high field strength above the horizon. At distances beyond the horizon that are not too great, we may think of (1) as giving the mean signal received, and (2) as giving the fading. However, contribution (2) usually decreases with distance more slowly than contribution (1). Beyond a certain distance, therefore, contribution (2) becomes predominant and the mean signal is no longer given by (1). (See Fig. 3.) Values of the scale of turbulence and of the departure of refractive index from mean expected on meteorological grounds are fully adequate to explain the scattered field strengths observed experimentally.
Assessment of Transmyocardial Perfusion in Alligator Hearts (1997)

A significant amount of direct transmyocardial perfusion is present in alligator hearts. The conditions that apparently permit this situation in reptilian hearts are reviewed, and their implications for aiding in the optimization of techniques for achieving transmyocardial flow in humans are discussed.
Modeling and Technique to Improve PSRR and PS-IMD in Analog PWM Class-D Amplifiers (2008)

Although power-supply noise, qualified by power- supply rejection ratio (PSRR), has been recognized as a potential drawback of Class-D amplifiers (CDAs) compared to linear amplifiers, the mechanisms of PSRR for CDAs are not well established. It is also not well recognized that the power-supply noise can intermodulate with the input signal, manifesting into power-supply induced intermodulation distortion (PS-IMD), and that the PS-IMD can be significantly larger than the output distortion component at supply noise frequency. Furthermore, techniques to improve PSRR and PS-IMD are largely unreported in literature. In this brief, by means of a linear model, the PSRR and PS-IMD of single-feedback and double-feedback CDAs are analyzed and analytical expressions derived. A simple method is proposed to improve PSRR and PS-IMD with very low hardware overheads, and the improvement is ~ 26 dB. Analytical expressions for PSRR and PS-IMD of the improved design are derived and the pertinent parameters thereof are investigated. The model and analyses provide practical insight to the mechanisms of PSRR and PS-IMD, and how various parameters may be varied to meet a given specification.
Advanced III-V Solar Cells with Back Reflectors (2020)

III-V-puolijohdeaurinkokennot ovat osoittaneet ylivertaisuutensa aurinkokennoteknologioiden keskuudessa, sillä tämänhetkinen hyötysuhteen maailmanennätys on saavutettu III-V-moniliitosaurinkokennoilla. Hyötysuhteen kasvattaminen vaatii uudenlaisia lähestymistapoja, kuten valon optisen hallinnan hyödyntämistä. Korkeamman hyötysuhteen lisäksi, etenkin avaruussovelluksiin, tavoitteena on uudet ominaisuudet, kuten taipuisuus, korkea tehopainosuhde ja puolijohteen kasvatusalustan uudelleen käyttäminen, jotta valmistuskustannuksia saadaan alennettua. Tämä väitöskirjatyö keskittyy kehittämään ohuiden III-V-puolijohdeaurinkokennojen valonohjausrakenteita, joiden avulla pystytään kasvattamaan absorptiopituutta aurinkokennon sisällä. Tutkimusmenetelmä käsittää takapeilien ja aurinkokennojen valmistamisen ja karakterisoinnin käyttäen olemassa olevia ja työn aikana kehitettyjä menettelytapoja. Tässä työssä tutkitut edistykselliset aurinkokennorakenteet mahdollistavat valon spektrin tehokkaamman hyödyntämisen käyttämällä laimeita typpiyhdisteitä tai kvanttipisteitä, jotka molemmat hyötyvät takapeilien aikaansaamasta absorptiopituuden kasvusta.\n \nTämän työn päätulokset sisältävät kehitetyn tasomainen korkean heijastuksen omaavan Ag/Cu-takapeilin, joka soveltuu myös virrankeräimeksi. Tämän jatkona kehitettiin polymeeriin valmistettu pyramidirakenteinen takapeili, joka hyödyntää valon diffraktiota ollen lisäksi vastustuskykyinen elektronisäteilytykselle. Jotta pystytiin havainnollistamaan tasomaisen takapeilin toiminta, peili valmistettiin laimeisiin typpiyhdisteaurinkokennoihin, joiden energia-aukot olivat 1 eV ja 0.8 eV. Oikosulkuvirrantiheydet, jotka saavutettiin aurinkokennoille vastaavat virtasovitetun moniliitosaurinkokennon vaatimaa virrantuottoa, joka koostuu kolmesta tai useammasta liitoksesta. Näiden lisäksi, tasomaisen takapeili valmistettiin InAs/GaAs-kvanttipisteaurinkokennoon, josta paksu kasvualusta oli poistettu. Virrantuotto oli kaksi kertaa suurempi kuin ilman takapeiliä, kuten oli oletettu ja aurinkokenno saavutti 0.844 V avoimen piirin jännitteen, joka on yksi korkeimmista raportoiduista arvoista. Lopuksi johdettiin laskentamalli, jota käytettiin arvioitaessa pyramidirakenteiden vaikutusta kvanttipisteaurinkokennon suorituskykyyn. Tulosten perusteella havaittiin merkittävä 12-kertainen kasvu kvanttipisteiden virrantuotossa.
Controlled size manipulation of free gold nanoparticles by laser irradiation and their facile bioconjugation (2007)

The average size of gold nanoparticles (AuNP), obtained by laser ablation in solution, is reduced to a few nanometers or increased to tens of nanometers using laser treatments with different strategies. The techniques do not require any stabilizing molecules and the AuNP surface is free from strongly linked ligands. This allowed one-step, immediate and very efficient functionalization of AuNP with commonly used proteins like bovine serum albumin (BSA), which can be detected, using small nanoparticles, down to 3 picomoles and with a 1 : 10 concentration ratio of BSA : AuNP.
Transient behavior of photorefractive gratings in a polymer (1995)

The transient behavior of photorefractive gratings in the polymer composite poly(N-vinyl carbazole) (PVK), 2,4,7-trinitro-9-fluorenone (TNF), and N,N-diethyl-para-nitroaniline (EPNA) doped with various amounts of 4-(diethylamino)benzaldehyde diphenylhydrazone (DEH) is presented. The influence on the hole drift mobility due to the change in the trap density induced by DEH, was directly measured.
Implementation of execution history in non-relational databases for feedback-guided job modeling (2012)

A feedback-guided Resource Requirement Prediction technique has been described in [2]. An Execution History is built and maintained for all the jobs which are executed in a large distributed system like Grid. When a new job arrives, its clones are sought for in the Execution History and if clones are found, relevant performance information are retrieved and used for estimating resource requirements. In this paper, we focus on the implementation details of Execution History. Instead of using relational databases, here we have used NoSQL database, MongoDB. The reasons for using MongoDB are discussed. Techniques for storing and retrieving data from the Execution History are also described. Overheads for such operations are measured and presented in the result part of this paper.
Poly(phenylene thioether)s with Fluorene-Based Cardo Structure toward High Transparency, High Refractive Index, and Low Birefringence (2016)

To realize high-performance thermoplastic camera lenses for compensating chromatic aberration in which lenses with large and small Abbe numbers were combined, novel poly(phenylene thioether)s with a fluorene-based cardo structure were developed with the potential for simultaneously realizing high transparency, a high refractive index, low birefringence, and small Abbe number. Excellent transmittance was observed in all polymer films because the interchain packing was effectively suppressed by the cardo structure (e.g., transmittance was as high as 90% at 400 nm), and furthermore, high refractive index values (1.6553–1.6762) were attained. The polymer with the highest content of cardo structure exhibited a low birefringence of 0.0014. The efficient cancellation of polarization anisotropy between the polymer backbone and the fluorene units directed perpendicular to the polymer backbone contributed to the low birefringence. These results indicate that promising materials for high-performance optical applications can be developed based on the well-suited incorporation of the cardo structure into the polymer backbone.
Prognostic Significance of Quantitative Levels of HIV p24 Binding Capacity in HIV Infection (1990)

Human immunodeficiency virus, type 1 (HIV-1), produces a chronic infection with a long latency before clinical disease. We followed 214 untreated subjects for 12-42 months to study the natural history of HIV infection: 110 were classified as asymptomatic, 11 as AIDS-related complex (ARC), 15 as AIDS with Kaposi's sarcoma (KS), 31 as AIDS with opportunistic infections (AIDS/OI), and 47 were HIV-seronegative controls. The quantitative capacity of serum to complex HIV p24 antigen, termed the p24 binding capacity (p24 BC), and quantitative levels of HIV p24 antigen in serum were determined at regular intervals. For people in all diagnostic groups, a p24 BC below 31 ng/ml was more closely associated with progression to AIDS/OI than was p24 antigen positivity; 94% of AIDS/OI, 86% of ARC, 56% of AIDS/KS, and 19% of asymptomatic subjects had p24 BC less than 31 ng/ml during the study period, while 67% of AIDS/OI, 27% of ARC, 61% of AIDS/KS, and 20% of asymptomatic subjects were p24 antigenemic. Prospective analysis of 47 asymptomatic seropositive men followed for 3 years, who showed actuarial progression rates to ARC at 4%, 13%, and 23% and to AIDS at 5%, 8%, and 8% at 1, 2, and 3 years, indicated that entry levels of p24 BC below 31 ng/ml were as strongly associated with progression to ARC/AIDS as was p24 antigenemia (p = 0.0003 vs. p = 0.008). The p24 binding capacity assay is a new and convenient methodology to measure immunocomplexing antibody to HIV p24 and is a powerful indicator of progressive HIV disease.
Functionalized Organoimidorhenium(<scp>V</scp>) Complexes as Potential Radiopharmaceuticals: Syntheses of Glycine Derivatives and the Structure Determination of a Rhenium Analogue of Chlorambucil (1996)

Two important aspects, the synthesis of imido complexes of radioactive metal isotopes and the diversity that can be incorporated with this ligand, distinguish this communication. The multiply bonded organoimide ligand provides a new and powerful means of conjugating suitable radioisotopes of rhenium to biologically relevant molecules in the design of radiopharmaceuticals. Here stable isotope and 188Re-labeled analogues (1) of the anticancer drug chlorambucil were synthesized.