نتایج جستجو برای: rocket

تعداد نتایج: 4529  

2017
Agapi I. Doulgeraki Georgios Efthimiou Spiros Paramithiotis Katherine M. Pappas Milton A. Typas George-John Nychas

The emergence of methicillin-resistant Staphylococcus aureus (MRSA) in food has provoked a great concern about the presence of MRSA in associated foodstuff. Although MRSA is often detected in various retailed meat products, it seems that food handlers are more strongly associated with this type of food contamination. Thus, it can be easily postulated that any food could be contaminated with thi...

1999
Warren D. Smith

| In an earlier report, I pointed out that a bilayer lm, one of whose sides was made of-emitting radioactive atoms, would act as a \rocket." A 3-stage alpha rocket could reach, e.g., speeds of 0:0025c in a few hundred years. (1) I now describe a simple variant I call the \alpha-electric rocket." It uses alpha rays to charge a capacitor which powers an ion gun. If it works, it should be able to ...

2017
Radya A. Mustafa

The effect of various household sanitizers including water, water acidified with white vinegar (1.5%), vinegar and lemon juice were evaluated for their effectiveness in reducing counts of Salmonella typhimurium on rocket and lettuce leaves. Treating rocket and lettuce samples with water containing 1.5% vinegar for 30 min or washing with water (at 28C) for 5 min showed negligible reduction in pa...

Journal: :Journal of economic entomology 2005
Francisco R Badenes-Perez Brian A Nault Anthony M Shelton

Ovipositional preference and larval survival of the diamondback moth, Plutella xylostella (L.), were compared among cabbage, Brassica oleracea L. variety capitata; glossy collards, Brassica oleracea L. variety acephala; and yellow rocket, Barbarea vulgaris (R. Br.) variety arcuata in different treatments of planting density, host plant age, intercropping, and water stress in 2003 and 2004. P. x...

2007
Dominik Heckmann Eric Schwarzkopf Junichiro Mori Dietmar Dengler Alexander Kröner

We revisit the top-level ontology Gumo for the uniform management of user and context models in a semantic web environment. We discuss design decisions, while putting the focus on ontological issues. The structural integration into user model servers, especially into the U2M-UserModel&ContextService, is also presented. We show ubiquitous applications using the user model ontology Gumo together ...

2013
S. Krishnan

Introduction In hybrid rocket motors, one of the two propellants (oxidizer or fuel) is in liquid phase and the other is in solid phase. The combination of a solid fuel and a liquid oxidizer is the most common one, Fig. 1. 1 Even though the idea of hybrid rocket motor was conceived as early as 1937, it was only after 1960s they were built successfully with good combustion efficiency. A discussio...

2008
Miroslav Pardy

The decay of elementary particles is described nonrelativistically and using the method of the special theory of relativity. Then the Tsiolkovskii rocket equation is applied to the one photon decay of the excited nucleus of the Mössbauer effect. The formation time of photons during decay is supposed nonzero. The Meščerskii equation is possible to identify with the bremsstrahlung equation. All d...

2007
Vivek Gautam Ashwani K. Gupta Michael R. Zachariah Tribhuwan Nath Singh

Title of Document: FLOW AND ATOMIZATION CHARACTERISTICS OF CRYOGENIC FLUID FROM A COAXIAL ROCKET INJECTOR Vivek Gautam, Ph.D., 2007 Directed By: Professor, Ashwani K. Gupta, Department of Mechanical Engineering High thrust-to-weight ratio and consistent performance over a range of operating conditions make cryogenic rocket engines one of the best options for space propulsion. However, future sp...

Journal: :iranian journal of public health 0
davood mehrabani stem cell and transgenic technology research center, dept. of pathology, shiraz university of medical sciences, shiraz, iran. zahra gholami dept. of bacteriology and virology, school of medicine, shiraz university of medical sciences, shiraz, iran. jamshid kohanteb dept. of bacteriology and virology, school of medicine, shiraz university of medical sciences, shiraz, iran. masood sepehrimanesh gasteroenterohepatology research center, shiraz university of medical sciences, shiraz, iran. seyedmohammad hossein-hosseini razi vaccine and serum research institute, shiraz, iran.

background : brucellosis is a major bacterial zoonosis of global importance with the causative organisms of gram-negative facultative intracellular pathogens. the aims of this study were to standardize two immunoelectrophoretic techniques, rocket and cross immunoelectrophoresis, and compare their results with other conventional serodiagnostic tests. methods : sera from 15 sheep, without any his...

ژورنال: مواد پرانرژی 2017
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In this study, effects of longitudinal and rotational accelerations on the Internal Ballistic Solid Propellant Rocket are investigated. First, a quasi one-dimensional flow is considered to drive governing equations. By assuming semi- permanent flow and neglecting heat transfer through the walls, at each time increment the governing equations are integrated along the length of motor. Then, using...

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