gebhart/patrepeval huggingface dataset:
Microwave waveguide helium plasmas for electrothermal propulsion (1992)

The absorption of microwave energy by a gas within a waveguide is being investigated for use in an electrothermal propulsion device. Plasmas created within a waveguide propagate toward the source of microwave energy and, thus, must be stabilized by some means. A very simple and highly efficient way of stabilizing the plasma is inserting a bluff body made of dielectric material, such as boron nitride, into the flow. The plasma is then stabilized in the recirculation region behind the blunt body. The coupling mechanism between microwave energy and waveguide plasmas was investigated to yield a quantitative understanding of the dependency of the coupling efficiency on such parameters as mass flow rate, power level, and gas pressure. Maximum coupling efficiency values up to 90% could be obtained, being a strong function of the mass flow rate. Spectroscopic measurements yielded values for the electron temperature of the stabilized plasma between 12,000 and 12,800 K.
Development of a Low Cognitive Load Planning Reminder System Adapting Changes of Work States Using Augmented Reality in Teleoperation of Heavy Machinery (2019)

Work efficiency of teleoperation of heavy machinery is less than a half of boarding operation because of difficulties in creating mental representation of work sites. Thus, we proposed a pre-offering view system for teleoperators to remember environmental information, which helps operators plan paths and working strategies, but some operators forgot their planning. Problems of previous researches including the navigation field are not considering changes of work states including moving and reaching and cognitive load. Therefore, in this paper, we develop a planning reminder system with low cognitive load which can adopt changes of work states. We display different AR depending on work states. Furthermore, we display AR only for current and next work states while operators are in low cognitive load to avoid increasing cognitive load to watch AR. The experimental results using a scale model indicates that the proposed system can decrease work time and cognitive load.
The Path to the Software-Defined Radio Receiver (2007)

After being the subject of speculation for many years, a software-defined radio receiver concept has emerged that is suitable for mobile handsets. A key step forward is the realization that in mobile handsets, it is enough to receive one channel with any bandwidth, situated in any band. Thus, the front-end can be tuned electronically. Taking a cue from a digital front-end, the receiver's flexible analog baseband samples the channel of interest at zero IF, and is followed by clock-programmable downsampling with embedded filtering. This gives a tunable selectivity that exceeds that of an RF prefilter, and a conversion rate that is low enough for A/D conversion at only milliwatts. The front-end consists of a wideband low noise amplifier and a mixer tunable by a wideband LO. A 90-nm CMOS prototype tunes 200 kHz to 20-MHz-wide channels located anywhere from 800 MHz to 6 GHz
Exploratory in vitro study of red blood cell storage containers formulated with an alternative plasticizer (2011)

Periodic mixing of RBCs stored in DINCH-PVC provides additional protection against hemolysis. Unmixed DINCH-PVC bags were inferior to DEHP-PVC bags for prevention of hemolysis, but remain a candidate for replacement DEHP in RBC storage bags.
A Hepatic Sinusoids-Based Microreactor for Photocatalytic Degradation of Methylene Blue by Titanium Dioxide (2020)

Abstract Microreactor technology is considered a state of art technology that gained great attention from researchers due to the high effectiveness and the small residence time compared with other regular reactors. Great research work has been established to involve microreators in a variety of applications, including fuel production, food and chemical industries, medical applications. In the present study, a hepatic sinusoids-based microreactor is experimentally tested in Methylene blue degradation using titanium dioxide (TiO2) photocatalyst activated with ultraviolet lamp of wavelength 365 nm. Purification of water using photocatalysis is considered a promising technology that attract the industrial community. Different operating conditions are investigated including; flow rate, Methylene blue concentration, and TiO2 concentration. 3 different dye concentrations are used (10 ppm, 20 ppm, and 30 ppm) with 3 different photocatalyst concentrations (100 ppm, 300 ppm, and 500 ppm). The flow rate has a span from 0.25 ml/min to 1 ml/min. Experiments are conducted to determine best operating conditions. Results show that the microreactor system can be effectively used in dye degradation with a very small residence time. A degradation of over 95% was reached at a TiO2 concentration of 300 ppm and a flow rate of 0.25 ml/min for all tested dye concentrations.
The Inhibitory Effect of Bismuth Oxychloride in Halithosis Caused by Volatile Sulfur Compounds (2012)

Because of the awareness of people to good hygiene in recent years, there are now many people who are more concern about halitosis or commonly known as ‘bad breath’. Therapeutic or prophylactic agents for the suppression of halitosis have increased. Zinc chloride has been recognized to affect volatile sulfur oxide which is the main substance that has been traditionally known to cause halitosis. In this study, we compared the inhibitory effect of bismuth oxychloride and zinc chloride in vitro on hydrogen sulfide and methyl mercaptan sulfur which are volatile substances. As a result, both bismuth oxychloride and zinc oxide have the same inhibitory effect on hydrogen sulfide. On the other hand, bismuth oxychloride’s inhibitory effect on methyl mercaptan is significantly higher than zinc chloride.
Atrial natriuretic peptide and exaggerated natriuresis during acute hypertonic volume expansion in essential hypertension (1989)

In patients with essential hypertension and healthy controls, plasma levels of atrial natriuretic peptide (ANP), angiotensin II (Ang II), aldosterone (Aldo), arginine vasopressin (AVP) and urinary excretion of prostaglandin E2 (PGE2) were measured under basal conditions, and before and after acute volume expansion with a 2.5% hypertonic sodium chloride solution. Tubular sodium handling was assessed by the lithium clearance technique. Under basal conditions ANP was increased in patients compared with controls (9.0 pmol/l versus 7.5 pmol/l, P less than 0.01). In response to acute volume expansion patients exhibited exaggerated increases in ANP (5.3 pmol/l versus 3.0 pmol/l, P less than 0.05), exaggerated natriuresis, and an abnormal decrease in fractional proximal and distal tubular sodium reabsorption (PFRNa and DFRNa, respectively). Furthermore, during comparable urinary flow rates, urinary PGE2 excretion was decreased in patients compared with controls (266 pg/min versus 705 pg/min, P less than 0.05). No differences were found between patients and controls in Ang II, Aldo or AVP under basal conditions. Both groups responded to hypertonic acute volume expansion with comparable decreases in Ang II and Aldo, and an increase in AVP. It is concluded that in essential hypertension ANP is increased under basal conditions and the increase in natriuresis and ANP is exaggerated during acute volume expansion. The exaggerated natriuretic response to acute volume expansion resulted from an altered handling of sodium in both proximal and distal tubules.
Steam Cracking and Steam Reforming of Waste Cooking Oil in a Tubular Stainless Steel Reactor with Wall Effects (2009)

Energy production from renewable feedstocks that would simultaneously solve ecological problems related to waste disposals would be very attractive. The present work is aimed at showing that atmospheric pressure thermal cracking of waste cooking oil in the presence of steam would be a potential option, particularly when the operating conditions direct the process either toward steam cracking or toward steam reforming in order to produce specific target bioenergy vectors: hydrogen, synthesis gas, or gaseous fuel. A commercial crude waste cooking oil (VEG) was selected as feed material. Using a bench-scale continuous flow tubular stainless steel reactor, experiments were conducted to study the final product distribution as a function of temperature, residence time of the feed material, extent of dilution, addition of a cracking initiator, and addition of a surface catalytic effect inhibitor. Several operating conditions of the VEG thermal cracking in the presence of steam were identified to meet the above-mentioned objectives. Particularly, when operating steam reforming at 800 °C with a very low steam-to-carbon ratio (less than 1), VEG was totally converted into synthesis gas in a hydrogen-to-carbon monoxide molar ratio close to 2 (favorable for low-temperature Fischer−Tropsch catalysis), with additional hydrogen and light-hydrocarbon (methane, ethylene, propylene) production reaching 40 and 27 mol %, respectively. Further investigations (conducted with the same equipment) confirmed the occurrence of strong reactor wall effects that led to the formation of coke deposits with catalytic activity during the VEG steam cracking and steam reforming.
Eutectic Al2O3-GdAlO3 composite consolidated by combined rapid quenching and spark plasma sintering technique - eScholarship (2004)

A mixture of Al2O3 and GdAlO3 was melted and rapid quenched to produce an amorphous film. Dense eutectic composites were consolidated from ground amorphous powder using both conventional and spark plasma sintering (SPS). Conventional sintering at temperatures above 1600degreesC for 24 h was required for complete sintering. However, using SPS complete sintering could be obtained at temperatures between 1300 and 1500degreesC with no soaking. The SPS technique could consolidate ultrafine eutectic structure from rapid quenched amorphous material, whilst conventional sintering was not successful owing to grain growth. A combination of rapid quenching and SPS resulted in an ultrafine eutectic Al2O3-GdAlO3 structure.
Data processing by neural networks in quantitative chemical analysis (1993)

An overview is given of the current usage of artificial neural networks as mathematical models for non-linear calibration procedures. The emphasis is on practical aspects: the choice of the calibration samples, the required network characteristics for a given problem, various training methods and their efficiency and the validation of the network models. Some problems with the application of neural networks in multivariate calibration are considered, together with recent research aimed at solving these problems
Transphyseal Bioabsorbable Screws Cause Temporary Growth Retardation in Rabbit Femur (2005)

A self-reinforced bioabsorbable poly-L-lactide/polyglycolide (SR-PLGA) 80/20 screw 2.0 mm in diameter was implanted transphyseally across the distal growth plate of the right femur in 24 immature rabbits. Radiologic evaluation revealed a mean shortening of 3.1 mm at 3 weeks, 11.1 mm at 6 weeks, 9.3 mm at 24 weeks, 9.0 mm at 48 weeks, and 12.6 mm at 72 weeks compared with the intact contralateral femur. In 13 control rabbits, drilling without screw placement did not cause any statistically significant femoral shortening. Therefore, the transphyseal SR-PLGA 80/20 screw caused growth retardation for 6 weeks postoperatively, after which the normal growth tendency was recovered until the growth plate was closed. The duration of temporary growth retardation correlated with that of strength retention of the SR-PLGA 80/20 copolymer. These findings suggest that SR-PLGA 80/20 screws can be applied in transphyseal bone fixation. The use of bioabsorbable screws for temporary epiphysiodesis seems attractive but requires further study.
Radiation Balanced Lasers (2001)

Get PDF Email Share Share with Facebook Share on X Post on reddit Share with LinkedIn Add to Mendeley Add to BibSonomy Share with WeChat Get Citation Copy Citation Text S. R. Bowman, "Radiation Balanced Lasers," in Advanced Solid State Lasers, M. Fejer, H. Injeyan, and U. Keller, eds., Vol. 26 of OSA Trends in Optics and Photonics (Optica Publishing Group, 1999), paper MA6. Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article
Time Division Multiplexing Front-Ends for Multiantenna Integrated Wireless Receivers (2010)

The approach of time division multiplexing (TDM) within an integrated wireless receiver to reduce the power, area and cost of multiple antenna receivers is studied. A solution is proposed to address the cross-interference between multiplex channels that affected previous attempts at TDM for multiple receive antennas. Detailed analysis from a radio system viewpoint is provided for when TDM is used as a low complexity hardware technique for managing multiple antenna channels. Simple closed form noise figure relations in terms of the number of multiplex channels and the anti-alias filter rejection are developed. Noise figure expressions that relate an individual TDM amplifier or TDM amplifier array's noise figure to that of a regular static amplifier are also given. These simple relations provide a quick method of determining expected noise figure of such systems. A four-antenna 2.4 GHz LNA array circuit in CMOS is designed in a 0.18-μm technology. The noise and linearity performance of this circuit is measured to verify the developed theory. The results obtained show close agreement with the developed model of the TDM-based multi antenna receiver system.
Multiphoton dissociation dynamics of dimethyl selenide (1991)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMultiphoton dissociation dynamics of dimethyl selenideJoseph J. BelBruno, Jennifer Spacek, and Elizabeth ChristophyCite this: J. Phys. Chem. 1991, 95, 18, 6928–6932Publication Date (Print):September 1, 1991Publication History Published online1 May 2002Published inissue 1 September 1991https://doi.org/10.1021/j100171a036RIGHTS & PERMISSIONSArticle Views67Altmetric-Citations18LEARN 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 InReddit PDF (660 KB) Get e-Alerts
1884: A Double-Blinded Prospective Randomized Controlled Trial Assessing the Safety and Efficacy of Intra Vesical Agents for Ureteral Stent Symptoms Following Extracorporeal Shock Wave Lithotripsy (2004)

INTRODUcnON AND OBJECTIVE: Ureteral stents are a significant source of pain and discomfort for many urologic patients. A novel approach to addressing this problem is the intravesical instillation of a selected pharmacologic agent following stent insertion. The purpose of this study was to assess the safety and efficacy of intravesical instillation of various agents in reducing ureteral stentassociated discomfort in patients requiring a stent for extracorporeal shock wave lithotripsy.
The poucing function in atm networks (2005)

ATM networks have been proposed by CCITT as the solution for future lntegrated Broadband Communication Networks. They provide a high flexibility with regard to varying bandwidth requirements for different services as well as the momentary bitrate within a connection (bitrale on demand). For the network operator this results in a need to control the individual connections in order to ensure an acceptable quality of service for all existing connections by means of a so called policing or source monitoring junction. In this paper, some basic aspects of this function including the dimensioning of its parameters are addressed using the 'Leaky Bucket' mechanism as an example.
Generalized excess noise factor for avalanche photodiodes of arbitrary structure (1990)

A generic model for a multilayer avalanche photodiode (APD) that admits arbitrary variation (with position) of the bandgap, dark generation rate, and ionization coefficients within each stage of the device is considered. Expressions for the mean multiplication and excess noise factors for dark carriers alone, injected carriers alone, and for an arbitrary superposition of dark and injected carriers are derived for this general model. Special cases of the results reduce to well-known expressions for the conventional APD, the separate absorption/grading/multiplication APD, the multiquantum-well APD, and the staircase APD.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
Disparities in Laryngeal Cancer Treatment and Outcomes: An Analysis by Hospital Safety‐Net Burden (2021)

3 (individual cohort study) Laryngoscope, 131:E1987-E1997, 2021.
Glyceria maxima (Hartm.) Holmb. (2002)

https://thekeep.eiu.edu/herbarium_specimens_byname/13241/thumbnail.jpg
Potent Antibacterial Prenylated Acetophenones from the Australian Endemic Plant Acronychia crassipetala (2020)

<i>Acronychia crassipetala</i> is an endemic plant species in Australia. Its phytochemistry and therapeutic properties are underexplored. The hexane extract of the fruit <i>A. crassipetala</i> T. G. Hartley was found to inhibit the growth of the Gram-positive bacteria <i>Staphylococcus aureus</i>. Following bio-activity guided fractionation, two prenylated acetophenones, crassipetalonol A (<b>1</b>) and crassipetalone A (<b>2</b>), were isolated. Their structures were determined mainly by NMR and MS spectroscopic analyses. This is the first record of the isolation and structural characterisation of secondary metabolites from the species <i>A. crassipetala</i>. Their antibacterial and cytotoxic assessments indicated that the known compound (<b>2</b>) had more potent antibacterial activity than the antibiotic chloramphenicol, while the new compound (<b>1</b>) showed moderate cytotoxicity.
(1E,4Z,6E)-5-Hydroxy-1,7-bis(2-methoxyphenyl)-1,4,6-heptatrien-3-one (2011)

In the title compound, C(21)H(20)O(4), the central hepta-trienone unit is approximately planar, with a maximum atomic deviation of 0.1121 (11) Å; the two benzene rings are twisted with respect to the hepta-trienone mean plane by 2.73 (5) and 29.31 (4)°. The mol-ecule exists in the enol form and the hy-droxy group forms an intra-molecular hydrogen bond with the neighboring carbonyl group. Weak inter-molecular C-H⋯O hydrogen bonding is present in the crystal structure.
Reversible barrier height changes in hydrogen-sensitive Pd/GaN and Pt/GaN diodes (2003)

The forward current of Pd/GaN and Pt/GaN Schottky diodes is found to increase significantly upon introduction of H2 into a N2 ambient. Analysis of the current–voltage characteristics as a function of temperature showed that the current increase is due to a decrease in effective barrier height through a decrease in metal work function upon absorption of hydrogen. The introduction of 10% H2 into a N2 ambient was found to lower the effective barrier height of Pd on GaN by 50∼70 meV over the temperature range of 298 to ∼423 K and of Pt on GaN by 30∼60 meV over the range of 443 to ∼473 K. The magnitude of the changes increased with temperature due to the effective cracking of the H2. The changes in barrier height were completely reversible upon restoration of N2 ambient.
Gigantetrocin and Gigantriocin: Two Novel Bioactive Annonaceous Acetogenins from Goniothalamus giganteus (1991)

The structural elucidations of gigantetrocin and gigantriocin, two novel bioactive monotetrahydrofuran acetogenins with vicinyl hydroxyls are presented. These compounds are significantly and selectively cytotoxic to human tumor cells in culture and toxic to brine shrimp, and they inhibit the formation of crown gall tumors on potato discs, showing good potential for in vivo antitumor activities
Supplementary Table 4 from A Genomic Approach Reveals a Novel Mitotic Pathway in Papillomavirus Carcinogenesis (2023)

Supplementary Table 4 from A Genomic Approach Reveals a Novel Mitotic Pathway in Papillomavirus Carcinogenesis
Three-dimensional localisation based on projectional and tomographic image correlation: an application for digital tomosynthesis (1999)

Accurate three-dimensional tumor localisation in Radiotherapy, is critical to the treatment outcome, particularly when high dose gradients are present. A number of techniques have been proposed for the localisation of anatomical structures or markers. The present study proposes an approach to a concurrent maximisation of localisation accuracy and efficiency by correlation of tomographic and projectional images. The method introduces an element of direct verification and interactive optimisation of the process. Tomographic images are used for the identification of a point of interest. Its position is computed within the treatment co-ordinate system and verification of this position is achieved by obtaining the beam's eye view of the identified point on two projection radiographs. The key element of the approach is that all images used should be part of one single image data set. The implementation of this localisation method, as part of the functionality of a Digital Tomosynthesis prototype, has provided an integrated facility for localisation, of optimised accuracy and precision, while easy and efficient to use. The considerations are general and apply in principle to any imaging system that can augment tomographic images with projections.
Act on the welfare of workers who take care of children or other family members including child care and family care leave (2007)

Introduction The Act on the Welfare of Workers for Child Care Leave (Act No. 76 of 1991, hereinafter “the Act on Child Care Leave”), established in Japan on May 8, 1991, allows workers to take child care leave regardless of sex. Since the act was put into effect on April 1 the following year, any worker with a child, regardless of sex, is permitted to take child care leave by requesting it from his or her employer. In the last 15 years since the act was put into effect, drastic changes have taken place in the social environment as well as in public awareness. It is not necessarily inaccurate to claim that these changes have been promoted by legislation giving both male and female workers the right to take child care leave. In the last 15 years, substantial revisions have been made to the Act on Child Care Leave with the incorporation of a provision on family care leave as well as a series of important revisions to facilitate a worker’s use of the system. The main reasons for such changes include the persistently declining birthrate, which is one of the decisive factors in legislation, and the aging population problem that has not been alleviated. It can be said that the Child Care Leave System has been revised since we are entering a period with fewer children and a perpetually aging population. Based on the Act on Child Care Leave, later revised to the Act on the Welfare of Workers Who Take Care of Children or Other Family Members Including Child Care and Family Care Leave (hereinafter called “the Act on Child and Family Care Leave”), this paper introduces an outline of the Child Care Leave and Family Care Leave Systems, which establish rights for workers who have children or family members requiring care.