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571篇 您的检索式:作者名="McKenzie M"
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1Electrodeless plasma thrusters for spacecraft: a review显示文摘The physics of electrodeless electric thrusters that use directed plasma to propel spacecraft without employing electrodes subject to plasma erosion is reviewed. Electrodeless plasma thrusters are potentially more durable than presently deployed thrusters that use electrodes such as gridded ion,Hall thrusters, arcjets and resistojets. Like other plasma thrusters, electrodeless thrusters have the advantage of reduced fuel mass compared to chemical thrusters that produce the same thrust. The status of electrodeless plasma thrusters that could be used in communications satellites and in spacecraft for interplanetary missions is examined. Electrodeless thrusters under development or planned for deployment include devices that use a rotating magnetic field; devices that use a rotating electric field; pulsed inductive devices that exploit the Lorentz force on an induced current loop in a plasma; devices that use radiofrequency fields to heat plasmas and have magnetic nozzles to accelerate the hot plasma and other devices that exploit the Lorentz force. Using metrics of specific impulse and thrust efficiency, we find that the most promising designs are those that use Lorentz forces directly to expel plasma and those that use magnetic nozzles to accelerate plasma.S N BATHGATE M M M BILEK D R MCKENZIE 2017Plasma Science and Technology2017,19,8:6
2NOD2 and ATG16L1 polymorphisms affect monocyte responses in Crohn's disease显示文摘AIM:To assess whether polymorphisms in NOD2 and ATG16L1 affect cytokine responses and mycobacterium avium subspecies paratuberculosis (MAP) survival in monocytes from Crohn's disease (CD) patients.METHODS:Monocytes were isolated from peripheral blood of CD patients of known genotype for common single nucleotide polymorphisms of NOD2 and ATG16L1.Monocytes were challenged with MAP and bacterial persistence assessed at subsequent time-points.Cytokine responses were assayed using a Milliplex multi-analyte profiling assay for 13 cytokines.RESULTS:Monocytes heterozygous for a NOD2 polymorphism (R702W,P268S,or 1007fs) were more permissive for growth of MAP (P=0.045) than those without.There was no effect of NOD2 genotype on subsequent cytokine expression.The T300A polymorphism ofATG16L1 did not affect growth of MAP in our model (P=0.175),but did increase expression of cytokines interleukin (IL)-10 (P=0.047) and IL-6 (P=0.019).CONCLUSION:CD-associated polymorphisms affected the elimination of MAP fromex vivo monocytes (NOD2),or expression of certain cytokines (ATG16L1),implying independent but contributory roles in the pathogenesis of CD.Dylan M Glubb Richard B Gearry Murray L Barclay Rebecca L Roberts John Pearson Jacqui I Keenan Judy McKenzie Robert W Bentley 2011World Journal of Gastroenterology2011,17,23:2
3Cyclopamine inhibition of the sonic Hedgehog pathway in the stomach requires concomitant acid inhibition显示文摘EL-ZAA'IARI M GRABOWSKA A M MCKENZIE A J 2008Regul Pept2008,146,13:1
4Relationship between system-level characteristics of assisted living facilities and the health and safety of unlicensed staff显示文摘McKenzie G L Teri L Salazar M K 2011AAOHNJ2011,59,4:1
5Mijnheer B,Margins for geometric uncertainty around organs at risk in radiotherapy显示文摘Mckenzie A Van Herk M 2002Radiotherapy and Oncology2002,62,3:1
6The surface charge on manganese dioxides显示文摘McKenzie R M 1981Aust J Soil Res1981,19,:1
7The width of margins in radiotherapy treatment plans显示文摘McKenzie A van Herk M Mijnheer B 2000Phys Med Biol2000,45,11:1
8Chang: in ultraviolet radiation reaching the earth's surface 显示文摘Madronieh S Mckenzie R L Caldwell M M 1995AMBIO1995,24,:1
9Beta-NMR mea- surements of lithium ion transport in thin films of pure and lith- ium-salt-doped poly (ethylene oxide) 显示文摘MCKENZIE t HARADA M KIEFL R F 2014Journal of the American Chemical Society2014,136,22:1
10A review of space tether re-search 显示文摘CARTMELL M P MCKENZIE D J 2008Progress in Aerospace Sciences2008,44,1:1
11über oxals? ure-und weins? ure-bornylester显示文摘ABBOT E B MCKENZIE A ROSS J D M 1938Berichte Der Deutschen Chemischen Gesellschaft1938,71,1:1
12The sport psychology program of the USA women's national volleyball team显示文摘GIPSON M MCKENZIE T LOWE S 1989Sport Psychol1989,3,:1
13Automated cell colony counting and analysis using the circular Hough image transform algorithm(CHiTA) 显示文摘Bewes J M Suchowerska N McKenzie D R 2008Physics in Medicine and Biology2008,53,21:1
14Combined antioxidant treatment effects on blood oxidative stress after eccentric exercise显示文摘GOLDFARB A H BOLLMER R J MCKENZIE M J 2005Med Sci Sports Exe2005,37,2:1
15Size dependent elemental composition of road-associated particles 显示文摘McKenzie E R Wong C M Green P G 2008Science of the Total Enviromnent2008,398,:1
16Margins for geometric uncertainty around organs at risk in radiotherapy 显示文摘McKenzie A van-Herk M Mijnheer B 2002Radiother Oncol2002,62,3:1
17The adsorption of lead and other heavy metals on oxides of manganese and iron 显示文摘MCKENZIE R M 1980Aust J Soil Res1980,18,:1
18Galα(1,3) Gal-The major xenoantigens recognised in pigs by human natural antibodies显示文摘Sandrin M S McKenzie I F C 1994Immunol Rev1994,141,:1
19Factors that predictcomplications after construction of a stoma: a retrospective study 显示文摘Saghir JH McKenzie FD Leckie I)M 2001Eur J Surg2001,167,7:1
20Outcome of Glenn anastomosis for heterotaxy syndrome with single ventricle 显示文摘Koudieh M McKenzie ED Fraser CD Jr 2006Asian Cardiovasc Thorac Ann2006,14,3:1
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