gebhart/patrepeval huggingface dataset:
The Determination of 31 Pesticide Residues in Vegetables by Chromatography (2009)

The method for determination of 31 pesticide residues in vegetables was developed.The sample was extracted by 50mL actonitrile.The first 10mL aliquot of upper phase was concentrated and injected into the chromatograph for determination of 19 organophosphorus pesticide residues with flame photometric detector(FPD).The second 10mL aliquot of upper phase was purified by florisil solid phase extract(SPE) and injected into the chromatograph for determination of 12 pyrethroid pesticide residues with electron capture detector(ECD).The average recoveries of 31 pesticides ranged from 74.20%~103.5%,and the relative standard deviations(RSDs) were 0.48%~16.0%.The minimum detection limits were 0.001~0.020mg/kg.This method has the merits of simply,rapidty,high accuracy and precision.
Conjugated polymer-based broadband terahertz wave modulator (2014)

An optical broadband terahertz (THz) wave modulator, based on a polymer-inorganic interface, is investigated. The THz pulse transmission was efficiently modulated by an external continuous wave (CW) laser. The effects on the poly[2-methoxy-5-(2'-ethylhexyloxy)-1, 4-phenylenevinylene] (MEH-PPV)/silicon interface were measured by THz time-domain spectroscopy. The modulation factor reached 99.6%, at an external laser beam intensity of 6.3 W/cm2. In the proposed THz-CW system, a significant fall (in both THz transmission and reflection) was also observed at the MEH-PPV/Si interface. This reduction in THz transmission and reflection has been induced by absorption at the MEH-PPV/Si interface. The results show that an optically controlled polymer/inorganic broadband THz modulator can be realized.
Measurement of Small Cracks by Photomicroscopy: Experiments and Analysis (1992)

A procedure for using photomicroscopy to record the growth of small fatigue cracks is presented. Using a specially designed fatigue specimen, the method is applicable to both naturally initiated cracks and cracks initiated from a small electro-discharge machined notch. Components of the experimental apparatus, which are low cost and readily available, include a standard metallurgical microscope, a 35-mm camera with bulk film capability, an electronic flash, and a microcomputer to control the fatigue machine and record test data. The photographic record provides a direct measurement of surface crack length and documents crack interactions with microstructural features; measurement precision less than 1 μm is possible. Following a test, the photographs of small cracks are projected on a computer digitizing tablet for convenient measurement of crack length. The crack length data are then combined with fatigue cycle-count data and reduced to the form of da/dN versus ΔK (or some other appropriate crack driving force). The capabilities of the photomicroscopic method are illustrated using typical data from specimens of the alloy Ti-6Al-2Sn-4Zr-6Mo, and an assessment is made of the practical advantages and limitations of the technique. Finally, some commonly unrecognized pitfalls that routinely arise in the analysis of small-crack data are discussed, and an alternative procedure for the analysis of such data is presented.
Design management and performance based briefing: a phenomenological interpretation of two case studies (2002)

A design management model was developed that relies upon the integration of expert stakeholder specialist knowledge domains that hitherto have resided within unique silos. The aim was to explore the nature of the properties of information using a stakeholder analysis as part of the procurement process toward developing a performance based brief. A phenomenological strategy for inquiry and interpretation was chosen for the study. Two simulated stakeholder analysis case studies were undertaken with the user and producer stakeholders interpretation was chosen for the study. Two simulated stakeholder analysis case studies were undertaken with user and producer stakeholders of school building projects. Observations of stakeholders interpretation of what they thought were project objectives were documented. The project objectives were constructed from multi data sources and analysed using content and discourse analysis techniques. The findings revealed that the complex interactions suggest that there should not be any strong division between primary and supportive decision roles because the information content generated challenged assumptions of existing knowledge. The analysis also revealed that information content is influenced by the process of information generation. Therefore the determination of a set a project objectives is a formative process and stakeholder group composition will impact upon the final set. The research is too exploratory is a formative process and stakholder group composition will impact upon the final set. The research is too exploratory to make any firm conclusions on the relationship between the group composition and project objectives, although some comparisons between two groups is made. The research confirmed that the receptiveness of producer-stakeholders' to other knowledge domains is a key determinant to the success of performance based briefing.
Open a Window and Let in Your PASSPORT (1992)

Congratulations are in order! There's a new arrival in my house. My husband and I have welcomed into our lives an active, fully operating, 386DX 40MHz computer. Don't laugh, I'm serious. We built it from the mini‐tower and motherboard on up. We planned for months which components we wanted, what peripherals, and how much memory. We purchased furniture for its own little corner in the living room. It is beautiful. It has a modem, two disk drives, a hard drive. We are very proud techies.
New optoelectronic materials (2008)

Optoelectronics is a very materials dependent technology. The metastable growth of new alloy materials and strain have significantly increased the performance and addressable wavelength regions due to these materials technology enhancements. The growth technologies, new materials and resulting devices are described.
Coral Rubber—A Cis-1,4-Polyisoprene (1956)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCoral Rubber—A Cis-1,4-PolyisopreneF. W. StavelyCite this: Ind. Eng. Chem. 1956, 48, 4, 778–783Publication Date (Print):April 1, 1956Publication History Published online1 May 2002Published inissue 1 April 1956https://pubs.acs.org/doi/10.1021/ie50556a032https://doi.org/10.1021/ie50556a032research-articleACS PublicationsRequest reuse permissionsArticle Views239Altmetric-Citations117LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access options Get e-Alerts
The Distribution of Mesembrine Alkaloids in Selected Taxa of the Mesembryanthemaceae and their Modification in the Sceletium Derived ‘Kougoed’ (1998)

Twenty species from nine genera of the Mesembryanthemaceae (Aptenia, Bergeranthus, Delosperma, Drosanthemum, Glottiphyllum, Lampranthus, Oscularia, Ruschia, and Sceletium) as well as the reportedly psychoactive preparation ‘kougoed’, prepared from ‘fermenting’ Sceletium tortuosum, were screened for the presence of the mesembrine alkaloids. Using gas chromatography (GC) with a nitrogen-phosphorous detector (NPD) three putative alkaloids were detected in Sceletium tortuosum whose mass spectra corresponded to those of 4'- O -demethylmesembrenol, mesembrine and mesembrenone. All the Mesembryanthemaceae plants investigated were shown to have Dragendorff-positive compounds on thin layer chromatograms (TLC); those containing mesembrine alkloids, as shown by later GC MS analysis, exhibited similar Rf values to the Sceletium alkaloids. However, using the technique employed in this study which encompassed the use of column and gas chromatography, the only genus containing mesembrine alkaloids to any significant extent was Aptenia. Alkaloid levels were found to be extremely low in all other taxa investigated. When a ‘modern’ technique for the preparation of a fermented Sceletium product, ‘kougoed’, was carried out it was found that levels, as well as the ratios, of the three alkaloids changed markedly. Substantial increases in total alkaloid levels were observed when the Sceletium material was crushed and bruised prior to drying for alkaloid extraction whereas no such changes occured when intact plants were oven dried at 80°C prior to alkaloid extraction. It is speculated that of the many potentially usable Mesembryanthemaceae plants available to the indigenous peoples, Sceletium was selected because it is the only genus with alkaloid levels high enough to elicit a psychoactive response. The traditional preparation technique also appears to have evolved as a method of producing a dry, stable, and relatively palatable preparation of increased pharmacological activity.
The Effects of System Trial on Consumer Beliefs in Marketing Software. (2004)

Marketers are constantly faced with designing an appropriate level of marketing stimulus at which a potential consumer can experience a sensation. Potential consumers generally are constrained with time and energy to explore new products and services. This study attempts to investigate the effects of a system trial as a marketing stimulus on potential consumers’ beliefs. Using a web-based e-learning system, the examination reveals that targeted consumers with or without system trial experience present differences in their determinants of behavioral intentions and beliefs. Potential consumers with system trial experience form a higher perception of usefulness, their intention to use e-learning for distance education purpose is more strongly affected by system functionality, their intention to use e-learning as a supplementary learning tool is more strongly affected by perceived usefulness, and their perception of ease of use is also more strongly influenced by system response. Without system trial, potential consumers’ self-efficacy plays a more important role but only to the extent of forming a higher perception of ease of use. These findings enhance our understanding of marketing information goods to potential consumers.
Reduction and sintering of fluxed iron ore pellets - A comprehensive review (1996)

Iron ore pellets with or without additives are commonly used as alternate charge material in both conventional and newer ironmaking processes. The performance characteristics of these pellets are normally assessed on the basis of their reducibility values, reduction strength and resistance to clustering. These properties depend mainly on the type and amount of additives and on the sintering phenomena of the pellets during firing. In the case of composite pellets (ore-coal pellets), reduction and sintering of the iron ore fines occur simultaneously The thermodynamic and reaction mechanisms of the processes involved in the reduction of iron ore pellets with and without reductants, additives, etc., may not necessarily be identical.
The reduction and sintering characteristics of pellets greatly influence the reaction mechanism and the surface morphology of the reduced pellets. The approaches in the literature to the analysis of these reduction and sintering phenomena are broadly categorized as follows: (i) empirical models, (ii) models based on kinetics, and (iii) models based on morphological changes. The relative merits and de-merits of these models are illustrated by their application to the reduction of fluxed ore-coal composite pellets, A critical analysis of the investigations that have been conducted on the reduction and sintering behaviour of such pellets is given.

It is shown that, although elegant empirical models and kinetic equations have theoretical significance and can be usefully employed in elucidating the reaction mechanisms of iran ore lumps, they are sometimes not directly applicable to fluxed ore-coal composite pellets. In studies of the latter, the approach should be to correlate the morphological changes with the reduction mechanism. The paper also gives a brief account of an investigation on the reduction and sintering aspects of fluxed composite reduced iron pellets.
Amorphous ferromagnetic CoSiB/Pd multilayer with perpendicular magnetic anisotropy (2013)

Perpendicular magnetic anisotropy has been studied for possible use in high-density spin transfer torque magnetic random access memories. The key issues of high-density spin transfer torque magnetic random access memories are decreasing the switching current and have the high thermal stability. In order to solve these problems, the approach of developing a new amorphous ferromagnetic material for use as a pinned layer for a multilayer with a low saturated magnetization value has been suggested. In a previous study, amorphous ferromagnetic material CoSiB was shown to have a low saturated magnetization (M s = 470 emu/cm3) and a modest anisotropy constant (K u = 1,500 erg/cm3). Then, we investigated the perpendicular magnetic anisotropy of a [CoSiB tCoSiB nm/Pt 1.4 nm]5 multilayer, where tCoSiB are 0.1, 0.2, 0.3, 0.4, and 0.5 nm. In this study, we present a new multilayer type based on the previous study, and this multilayer, CoSiB/Pd multilayer has the perpendicular magnetic anisotropy. In this letter, we have investigated the perpendicular magnetic anisotropies of a [CoSiB tCoSiB nm/Pd 1.3 nm]5 multilayer, where tCoSiB are 0.1, 0.2, 0.3, 0.4, 0.5, and 0.6 nm and [CoSiB 6.3 nm/Pd tPd nm]5 multilayer, where t Pd are 1.1, 1.2, 1.3, 1.4, 1.5, and 1.6 nm.
A depth-encoded PET detector (1991)

Radial blurring in high-resolution positron emission tomography (PET) can be reduced by measuring the PET photon's depth of interaction within a detector crystal. Simulations show that dividing the crystal into two equiprobable regions of interaction almost eliminates this blurring. This has been done using a black band placed around a 3-cm bismuth germanate crystal, 1 cm from the front. A photomultiplier tube (PMT) collects light from the rear of the crystal for energy and timing measurement. Another PMT collects light through a light guide from the top front of the crystal to find the depth of interaction. Gamma rays interacting in the front of the crystal produce a strong signal in the depth-sensing PMT, while interactions behind the band produce a weaker (<10%) signal. The intensity of the light recorded by the energy PMT is almost constant (within +or-3%) for interactions at any depth in the crystal.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
POSITIVE CORRELATION BETWEEN APOPTOTIC AND PROLIFERATIVE INDICES IN GASTROINTESTINAL LYMPHOMAS OF MUCOSA‐ASSOCIATED LYMPHOID TISSUE (MALT) (1996)

To understand the role of deregulation of apoptosis in the pathogenesis of gastrointestinal MALT lymphoma, apoptosis has been quantitatively studied in paraffin sections from 40 cases (19 low grade, 21 high grade). The extent of apoptosis was correlated with histological grade, proliferative activity as measured by immunostaining of Ki67 proliferation antigen, and the expression of bcl-2 and p53 oncoproteins, which are known to participate in the regulation of apoptosis. Both apoptotic and proliferative indices were significantly (P<0·00001) higher in high-grade than in low-grade tumours. Overall, apoptotic indices were negatively correlated with bcl-2 expression, particularly in low-grade tumours in which both strong bcl-2 expression and low levels of apoptosis were observed. Thus, the slow expansion of low-grade MALT lymphoma may partly result from a prolonged life-span of tumour cells, due to bcl-2-mediated blockage of apoptosis. No difference in apoptotic indices was found between p53-positive and p53-negative cases. Furthermore, correlation analysis revealed a significantly positive association between apoptotic and proliferative indices. This supports the current belief that the mechanisms controlling apoptosis and proliferation are both activated during the cell cycle and whether a cell enters the proliferation cycle or the apoptotic process depends on survival factors.
Demographic Patterns for Mesothelioma in the United States (1987)

Incidence rates for pleural and peritoneal mesotheliomas in about 10% of the U.S. population were examined by various demographic characteristics based on 1973-84 data from the Surveillance, Epidemiology, and End Results Program. Although pleural mesothelioma was more common than peritoneal mesothelioma, both are rare diseases in this country. Pleural mesothelioma incidence rates among white males increased over time and were highest in seaboard areas where shipyards have been located (Seattle, San Francisco-Oakland, Hawaii). The significant secular change was attributed to both period (date of diagnosis) and cohort (date of birth) effects. Pleural mesothelioma incidence rates among white males were nearly 50% higher in the 1980-84 period compared to those in 1975-79; the cohort effect rose to a peak for the 1905-9 birth cohort and then declined. These effects probably reflect changes in asbestos exposure patterns in the past and more recent changes in clinical awareness and coding rules for mesothelioma. Geographic analysis of U.S. death certificates for pleural cancer among white males and females dying during 1968-78 indicated that mortality rates were significantly elevated in several areas that have had asbestos-manufacturing plants or shipyards. Analyses of mortality rates must be viewed with caution, since mesothelioma is considerably underreported on death certificates.
An integrated object-oriented knowledge base management system OSAM*.KBMS/ROSE for supporting design and manufacturing (2003)

This paper describes the result of a research and development effort supported by IBM under Contract Hash S919FM81 and carried out jointly by the Database Systems Research and Development Center of the University of Florida and the Design Research Center of the Rensselaer Polytechnic Institute. It provides the motivation for integrating two technologies (OSAM*.KBMS and ROSE) which were separately developed at these two centers for supporting computer integrated engineering and manufacturing applications. The similarities, differences, and the complementary nature of these two technologies are described. The integrated system which consists of a graphical user interface, a query processor an object manager a dictionary manager, and a storage manager is described. The system has been implemented and demonstrated in a network of Sun and IBM RS/6000 workstations.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Reviews (1982)

Journal Article Reviews Get access The Pilgrim's Progress: Critical and Historical Views . Edited by VINCENT NEWEY . Pp. xiv+302 . Liverpool : Liverpool University Press , 1980 . £12.00. CHRISTOPHER HILL CHRISTOPHER HILL Search for other works by this author on: Oxford Academic Google Scholar Notes and Queries, Volume 29, Issue 2, April 1982, Pages 176–177, https://doi.org/10.1093/nq/29-2-176 Published: 01 April 1982
An American midwife in Moscow. (1991)

Having completed a 3-week visit to Soviet birth houses and abortion clinics, 2 American midwives report on the harmful treatment of women by the USSR's health care system. On November 1990, the midwives traveled to Moscow as envoys of the Soviet-American International Center for Better Health. They visited rodoms, Soviet birth houses, which are described as frightening, dirty places that lack supplies and medical reference books. A typical childbirth at a rodom (to which Soviet women are required to go, since home births are outlawed) was videotaped. The video shows a woman in labor, alone in a room while a group of midwives sits outside in the hall smoking cigarettes. She has been given a psychotropic drug. Later, the midwives begin to apply pressure to the woman's abdomen, then a doctor makes a cut in the woman's groin area to make it easier to push the baby through. These dangerous obstetric practices date back to the 1940s. At 26/1000, the USSR has the 3rd highest infant mortality rate in Europe (after Yugoslavia and Romania). Government figures indicate the 7000 women died in rodoms last year alone. The ill treatment of women can also extend to abortion clinics. Here, women receive no comfort; they are not even allowed to bring a support person. Because Soviets lack access to contraceptives, the country has the highest abortion rate in the world--8 abortions for every live birth. The American midwives have formed an organization called International Midwives Exchange (IME). IME hopes to lower the infant mortality rate in the USSR by educating doctors and midwives on the proper use of medication and birthing practices, stressing natural childbirth as the preferred method. IME will also attempt to lower the abortion rate by developing a pipeline of contraceptive supplies.
Extended electronic states in a Fibonacci chain (1990)

The electronic structure of a one-dimensional binary alloy A1 tau /B1 tau /2 (with tau being the golden mean) with atoms A and B distributed in a Fibonacci sequence is studied using a tight-binding model, in which variation in both the diagonal and the off-diagonal terms is treated simultaneously. In contrast to the previous diagonal and off-diagonal models, for the 'mixed' model the author finds an extended state. Also in the limiting case of the 'off-diagonal' model the state corresponding to E=0 is an extended state. These extended states are found to be independent of the arrangement of BA and BAA sequences in the Fibonacci chain.
Patient performance evaluation using Kinect and Monte Carlo-based finger tracking (2012)

The growing use of Virtual Reality (VR) in rehabilitation is justified by a number of advantages, such as an increase of patient motivation, repetitiveness of learning trials, possibility to tailor treatment to individual subject, safety of the environment, quantitative patient improvement assessment, and remote data access. This paper proposes a novel low-cost evaluation method of patient performance in task-oriented hand rehabilitation grounded on two key elements: a Virtual Environment (VE) which the patient has to interact with, and the Microsoft Kinect motion sensing device, which is used to fully interact with the VE and to feed back patient movements in order to perform an off-line analysis. To this purpose, the VE is equipped with a virtual hand and virtual objects the patient has to interact with. In order to make the interaction between patient and VE possible, a robust marker-based finger tracking algorithm has been developed by using Bayesian estimation methods. In the proposed framework, the hand movements involved in daily activities are performed off-line by the therapist and are tracked by using the Kinect camera. The estimated hand joint trajectories are provided in input to a virtual hand model developed with the Matlab Virtual Reality Toolbox. The virtual hand reproduces the movements performed by the therapist and the patient is asked to imitate them. User motor improvements can be monitored by the Kinect camera, superimposing the therapist finger trajectories on the patient finger trajectories. The error between the two trajectories can be used for evaluating the patient residual mobility. The proposed system can be easily applied to home-based rehabilitation.