581   On-Fiber Standardization Technique for Solid-Coated Solid-Phase Microextraction On-Fiber Standardization Technique for Solid-Coated Solid-Phase Microextraction Simon Ningsun Zhou, Xu Zhang, Gangfeng Ouyang,† Ali Es-haghi,‡ and Janusz Pawliszyn*    2006 The on-fiber standardization technique for solid-coated solid-phase microextraction (SPME) was studied, and a theoretical model is proposed for the isotropic behavior. of adsorption and desorption, based on Fick's law of diffusion and the Langmuir model. The isotropy of the adsorption and desorption of analytes onto and from the surface of porous solid SPME fiber was validated with the use of a commercially available fiber, a 50-μm Carbowax/templated resin for carbamate pesticide analysis in va... 查看全文

582   Characterization and expression analysis of three cold shock protein (CSP) genes under different stress conditions in the Antarctic bacterium Psychrobacter sp. G Characterization and expression analysis of three cold shock protein (CSP) genes under different stress conditions in the Antarctic bacterium Psychrobacter sp. G Weizhi Song, Xuezheng Lin;Xiaohang Huang    0 Low temperature is one of the major environmental challenges that Antarctic bacteria must face. Detailed studies of cold shock responses of cold-adapted microorganisms are still insufficient. Here, we cloned three cold shock protein (CSP) genes (Csp1137, Csp2039, and Csp2531) in the Antarctic bacterium Psychrobacter sp. G and their regulatory sequences were identified. The three CSPs were highly conserved with other known CspAs. qRT-PCR was performed to evaluate ... 查看全文

583   Thermal desorption treatment of dioxin contaminated soil at the former allied feeds site, Sydney Australia Thermal desorption treatment of dioxin contaminated soil at the former allied feeds site, Sydney Australia    2009 The former Allied Feeds site is located on the Rhodes Peninsula adjacent to the Homebush Bay, in Sydney, Australia. The adjacent Lednez site was historically used for manufacturing a range of chemicals, including tar, explosives and chlorinated compounds. Through these activities, both sites and the Homebush Bay were contaminated with dioxins/furans, chlorobenzenes, chlorophenols and organochlorine pesticides (OCPs). Both properties are currently being remediated for open space, medium and high-... 查看全文

584   Blue Shifting Hydrogen Bonding in the Complexes of Chlorofluoro Haloforms with Acetone-d6 and Oxirane-d4 Blue Shifting Hydrogen Bonding in the Complexes of Chlorofluoro Haloforms with Acetone-d6 and Oxirane-d4 Sofie N. Delanoye, Wouter A. Herrebout, and Benjamin J. van der Veken*    2002 Mixtures of haloforms of the type HCClnF3-n (n = 0?3) with oxirane-d4 and acetone-d6 have been studied in liquid krypton, using infrared spectroscopy. Analysis of the spectra shows that a small fraction of the monomers is transformed into 1:1 complexes in which the haloform. C?H bond is hydrogen bonded to the oxygen atom of the base. For all complexes, the haloform. CH stretch is blue shifted, with the shift increasing from chloroform. to fluoroform, while the ratio of the infrared intensities o... 查看全文

585   Measuring corneal hysteresis: threshold estimation of the waveform. score from the Ocular Response Analyzer Measuring corneal hysteresis: threshold estimation of the waveform. score from the Ocular Response Analyzer Marcelo Ayala;Enping Chen    0 Background  The aim of this study was to determine a threshold waveform. score (WS) for the best score value (BSV) in the Ocular Response Analyzer (ORA). 查看全文

586   Ionospheric irregularities at Antarctic using GPS measurements Ionospheric irregularities at Antarctic using GPS measurements SUNITA TIWARI, AMIT JAIN, SHIVALIKA SARKAR, SUDHIR JAIN;A K GWAL    0 The purpose of this work is to study the behaviour of the ionospheric scintillation at high latitude during geomagnetically quiet and disturbed conditions which is one of the most relevant themes in the space weather studies. Scintillation is a major problem in navigation application using GPS and in satellite communication at high latitudes. Severe amplitude fading and strong scintillation affect the reliability of GPS navigational system and satellite communica... 查看全文

587   Advantages of induction heat treatment in the application of self-fluxing alloy to boiler tubes Advantages of induction heat treatment in the application of self-fluxing alloy to boiler tubes    1998 This study focuses on two major advantages of induction heating over flame heating in the treatment of coated boiler tubes. In both cases the induction heating process is simple, fast and effective. Firstly, we will show how the the use of induction heating results in exceptionally thick and hard coatings with low porosity. Having high corrosion and wear resistant properties, the products can satisfy industry's needs for reliable coatings with a long service life. Next, the study will detail how... 查看全文

588   Challenges in the implementation of the Water Framework Directive: Case study of the alpine River Drau, Austria Challenges in the implementation of the Water Framework Directive: Case study of the alpine River Drau, Austria    2005 The paper explores a methodology for the definition of ecological water quality indicators on the basis of a case study on an alpine river in Austria. Further, it discusses a particular interpretation of the combined approach introduced in the European Union Water Framework Directive that allows violating emission regulations if cost-effective. © IWA Publishing 2005. 查看全文

589   Hybrid Sterility over Tens of Meters Between Ecotypes Adapted to Serpentine and Non-Serpentine Soils Hybrid Sterility over Tens of Meters Between Ecotypes Adapted to Serpentine and Non-Serpentine Soils Leonie C. Moyle, Mia Levine, Maureen L. Stanton;Jessica W. Wright    0 The development of hybrid sterility is an important step in the process of speciation, however the role of adaptive evolution in triggering these postzygotic barriers is poorly understood. We show that, in the California endemic plant Collinsia sparsiflora, ecotypic adaptation to two distinct soil types is associated with the expression of intrinsic F1 hybrid sterility between ecotypes, over spatial scales of less than 1 km. First, we show that hybrids between soil-adapted ... 查看全文

590   Steroidal Sapogenins. XLII. Partial Synthesis of 11-Ketodiosgenin2 Steroidal Sapogenins. XLII. Partial Synthesis of 11-Ketodiosgenin2 Edward S. Rothman, Monroe E. Wall    1957 查看全文

591   Characterization of protease processing sites during conversion of rat profilaggrin to filaggrin Characterization of protease processing sites during conversion of rat profilaggrin to filaggrin K. A. Resing, R. S. Johnson, K. A. Walsh    1993 查看全文

592   The effect of Montelukast on bronchial provocation tests and exhaled nitrix oxide levels in asthmatic patients The effect of Montelukast on bronchial provocation tests and exhaled nitrix oxide levels in asthmatic patients    2003 Background: Leukotriene antagonist therapy in asthmatic patients alleviates symptoms and improves exercise tolerance, however the effect of these drugs on bronchial firovocation tests and exhaled nitric oxide levels are less clearly established. Objective: To determine the effect, of montelukast treatment on airway hyperresponsiveness to exercise, methacholine and adenosine-5′-monophosphate and on exhaled nitric oxide levels in steroid-naive asthmatics. Methods: Following a 2 week run-in p... 查看全文

593   Emergency Response System Design: An Examination of Emergency Communication Messages Emergency Response System Design: An Examination of Emergency Communication Messages Rohit Valecha, Raj Sharman, Raghav Rao;Shambhu Upadhyaya    0 The current state of emergency communication is dispatch-mediated i.e. the messages from the scene are directed to responders and agencies through the dispatch. Emergency dispatch provides essential support to emergency responders during emergencies. However, there are several problems associated with the dispatch-mediated communication. Utilizing IBM’s message modeling concept, we develop a messaging model to provide support for computer-mediated communica... 查看全文

594   Mechanism of the reaction catalyzed by mandelate racemase. 3. Asymmetry in reactions catalyzed by the H297N mutant Mechanism of the reaction catalyzed by mandelate racemase. 3. Asymmetry in reactions catalyzed by the H297N mutant James A. Landro, Abraham T. Kallarakal, Stephen C. Ransom, John A. Gerlt, John W. Kozarich, David J.    1991 查看全文

595   Tritiated Chiral Alkanes as Substrates for Soluble Methane Monooxygenase from Methylococcus capsulatus (Bath):  Probes for the Mechanism of Hydroxylation Tritiated Chiral Alkanes as Substrates for Soluble Methane Monooxygenase from Methylococcus capsulatus (Bath):  Probes for the Mechanism of Hydroxylation Ann M. Valentine,† Barrie Wilkinson,‡ Katherine E. Liu,† Sonja Komar-Panicucci,† Nigel D. Priestley,    1997 The tritiated chiral alkanes (S)-[1-2H1,1-3H]ethane, (R)-[1-2H1,1-3H]ethane, (S)-[1-2H1,1-3H]butane, (R)-[1-2H1,1-3H]butane, (S)-[2-3H]butane, (R)-[2-3H]butane, and racemic [2-3H]butane were oxidized by soluble methane monooxygenase (sMMO) from Methylococcus capsulatus (Bath), and the absolute stereochemistry of the resulting product alcohols was determined in order to probe the mechanism of substrate hydroxylation. When purified hydroxylase, coupling protein, and reductase components were used,... 查看全文

596   Gaining a foothold in the China water market Gaining a foothold in the China water market    2008 The world's largest show for water and waste handling technology, commonly known as IFAT, will be held in China's Shanghai New International Expo Centre from 23-25, September, 2008. IFAT China is an international trade fair for practical solutions in the areas of water supply, sewage treatment, waste disposal, recycling, air pollution control, environmental technology, and more environmentally compatible energy sources in Asia. Taking place in parallel with IFAT China in Halls E4 and E5, will be... 查看全文

597   Diplonine, a Neurotoxin Isolated from Cultures of the Fungus Stenocarpella maydis (Berk.) Sacc. that Induces Diplodiosis Diplonine, a Neurotoxin Isolated from Cultures of the Fungus Stenocarpella maydis (Berk.) Sacc. that Induces Diplodiosis Leendert D. Snyman*†, T. Stephanus Kellerman†, Robert Vleggaar§, Bradley C. Flett#, Karin M. Basson†    2011 Diplodiosis is a neuromycotoxicosis of cattle and sheep caused by ingestion of maize infected with the ear-rot fungus Stenocarpella (= Diplodia) maydis. Apart from ataxia, paresis, and paralysis, the toxin is responsible for stillbirths and neonatal losses characterized by the presence of spongiform. degeneration in the white matter of the brain in the offspring of dams exposed to infected maize cobs. In the present study a toxin, named diplonine, which induced neurological signs in guinea pigs ... 查看全文

598   Addressing contaminated groundwater and promoting environmental stewardship in wichita, Kansas - The gilbert and mosley project story Addressing contaminated groundwater and promoting environmental stewardship in wichita, Kansas - The gilbert and mosley project story    2009 The City of Wichita, Kansas faced a significant environmental challenge when volatile organic compounds impacted a large volume of groundwater extending south of the downtown area to the Arkansas River. This contaminated groundwater posed a threat to human health and the environment and threatened to stagnate economic development as a result of the environmental liability concerns across the project area that encompasses about 3,850 acres and 8,000 parcels of residential, commercial, and industr... 查看全文

599   Slip band distribution in rapid thermally annealed silicon wafers Slip band distribution in rapid thermally annealed silicon wafers Jorge Garagorri;M. Reyes Elizalde;Matteo C. Fossati;David Jacques;Brian K. Tanner    0 X-ray diffraction imaging of 200?mm diameter (100) oriented double-side polished silicon wafers has revealed that the slip band distribution, following rapid thermal annealing (RTA), has a lower symmetry than predicted from the material crystallography. Finite element (FE) modelling of the thermal processes has been undertaken and it is found that, in order to predict the measured temperature distribution during the annealing sequence in a commercial RTA furnace, an anisotropic heat flux distrib... 查看全文

600   Scale inhibitor squeeze treatments deployed from an FPSO in deepwater, subsea fields in the Campos Basin Scale inhibitor squeeze treatments deployed from an FPSO in deepwater, subsea fields in the Campos Basin    2007 This paper describes field experience and lessons learned from scale control operations in a deepwater subsea development in the Campos Basin, Brazil; specifically, from bullheading scale-inhibitor squeezes from the FPSO host, along the production flow-lines, into four low-watercut, horizontal subsea wells, completed with sand control. The relatively small number of high-cost, highly productive wells, coupled with a very high barium-sulfate scaling tendency upon breakthrough of injection water, ... 查看全文

601   Mechanism of thermolysis of diketene in the gas phase Mechanism of thermolysis of diketene in the gas phase James S. Chickos, David E. Sherwood Jr., Karl Jug    1978 查看全文

602   A simple empirically motivated template for the thermal Sunyaev–Zel’dovich effect A simple empirically motivated template for the thermal Sunyaev–Zel’dovich effect A. Caballero, E. Cusi, C. Garciacute;a and A. Garciacute;a-Dorado    2012 We develop a model for the power spectrum of unresolved clusters of galaxies arising from the thermal Sunyaev–Zel’dovich (tSZ) effect. The model is based on a ‘universal’ gas pressure profile constrained by X-ray observations and includes a parameter to describe departures from self-similar evolution. The model is consistent with recent Planck observations of the tSZ effect for X-ray clusters with redshifts z≲ 1 and reproduces the low amplitude for the tSZ inferred... 查看全文

603   The Contamination of Nickel Crystals Grown in a Molybdenum Resistance Furnace The Contamination of Nickel Crystals Grown in a Molybdenum Resistance Furnace Andrew Dingwall    2010 High purity nickel prepared by Fink and Rohrman when melted in an alundum crucible in a molybdenum resistance furnace was found to contain as much as 0.1 per cent molybdenum. By surrounding the crucible with a gas tight porcelain tube, nickel, free from molybdenum, was obtained. The introduction of the porcelain tube and the use of a different cement for the crucible resulted in the contamination of the nickel with silicon. 查看全文

604   Electron-transfer oxidation of ketene silyl acetals and other organosilanes. Mechanistic insight into Lewis acid mediated electron transfer Electron-transfer oxidation of ketene silyl acetals and other organosilanes. Mechanistic insight into Lewis acid mediated electron transfer Shunichi Fukuzumi, Morifumi Fujita, Junzo Otera, Yukihiro Fujita    1992 查看全文

605   Arc‐Image Furnace for Growth of Single Crystals Arc‐Image Furnace for Growth of Single Crystals Robert E. De La Rue;Frank A. Halden    0 A carbon arc‐image furnace has been designed and employed for the growth of single crystals of refractory compounds. The image furnace is a unique facility for this application since it provides a sharply defined hot zone, excellent atmosphere control, and complete freedom from contamination during crystal growth. General operating and performance characteristics of this furnace are described. 查看全文

606   Efficacy of atmospheric pressure plasma as an antibacterial agent against enterococcus faecalis in vitro Efficacy of atmospheric pressure plasma as an antibacterial agent against enterococcus faecalis in vitro    2011 Enterococcus faecalis (E. faecalis) is a microorganism that can survive extreme challenges in obturated root canals. The aim of this study was to evaluate the efficacy of a non-thermal atmospheric pressure plasma plume against E. faecalis in vitro. A non-thermal atmospheric pressure plasma jet device which could generate a cold plasma plume carrying a peak current of 300 mA was used. The antibacterial efficacy of this device against E. faecalis and its biofilm under different conditions was dete... 查看全文

607   Seroprevalence of avian influenza A (H5N1) virus among poultry workers in Jiangsu Province, China: an observational study Seroprevalence of avian influenza A (H5N1) virus among poultry workers in Jiangsu Province, China: an observational study Xiang Huo, Rongqiang Zu, Xian Qi, Yuanfang Qin, Liang Li, Fenyang Tang, Zhibin Hu;Fengcai Zhu    2012 Background  Since 2003 to 06 Jan 2012, the number of laboratory confirmed human cases of infection with avian influenza in China was 41 and 27 were fatal. However, the official estimate of the H5N1 case-fatality rate has been described by some as an over estimation since there may be numerous undetected asymptomatic/mild cases of H5N1 infection. This study was conducted to better understand the real infection rate and evaluate the pote... 查看全文

608   Use of iron oxide nanomaterials in wastewater treatment: A review Use of iron oxide nanomaterials in wastewater treatment: A review    2012 Nowadays there is a continuously increasing worldwide concern for the development of wastewater treatment technologies. The utilization of iron oxide nanomaterials has received much attention due to their unique properties, such as extremely small size, high surface-area-to-volume ratio, surface modifiability, excellent magnetic properties and great biocompatibility. A range of environmental clean-up technologies have been proposed in wastewater treatment which applied iron oxide nanomaterials a... 查看全文

609   The prediction of stress fractures using a ‘stressed volume’ concept The prediction of stress fractures using a ‘stressed volume’ concept    2006 This paper addresses an anomaly which exists in the current literature regarding stress fractures. Analysis of the data on fatigue strength of bone samples in vitro would conclude that these fractures should never occur at the strain levels known to occur in vivo. This anomaly can be resolved by including in the analysis the effect of stressed volume, whereby larger volumes of material are expected to have worse fatigue properties. A Weibull analysis was used to predict the probability of failur... 查看全文

610   Thermolysis and transannular reactions of 8,8-dichloro-2,3:5,6-dibenzobicyclo[5.1.0]octane derivatives Thermolysis and transannular reactions of 8,8-dichloro-2,3:5,6-dibenzobicyclo[5.1.0]octane derivatives David C. Remy, Paul S. Anderson, Marcia E. Christy, Ben E. Evans    1978 查看全文

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