نتایج جستجو برای: respiratory explosion
تعداد نتایج: 223718 فیلتر نتایج به سال:
A novel mathematical model has been developed to aid the formulation of emulsion explosives. This mathematical model calculated heat of explosion, oxygen balance and raw material cost as a function of explosive ingredients, and the solution of the mathematical model was obtained by a MS Excel program. The effects of the different content of NH4NO3, NaNO3, H2O, and span-80 and composite fuel oil...
The intrinsic properties of some materials, such as foams, porous materials and granular materials, are their ability to mitigation waves. In this study, we investigated the ability of granular materials in explosion-induced wave mitigation. The present study was carried out using numerical simulations with Autodyn hydro-code and experimental tests by shock tube. Two materials of sawdust and mi...
for some 3 million years, the archaeological record is characterized by stone tools undergoing incremental changes. then around 40,000 years ago, the monotony of lithics is terminated by a profusion of visual representations, generally considered to be the world’s first objets d’art. this collection include a series of portable objects, especially figurines and, later on, the famous cave painti...
PBXN-109EB is a new plastic bonded explosive containing energetic binder system NHTPB-NPB that has better performance and energetic properties than PBXN-109. In this work, at first, kinetic parameters of thermal decomposition were extracted via kissinger method and differential scanning calorimetery (DCS) technique for PBXN-109EB in various heating rates and then its decomposition half-life (ag...
Nowadays, with increasing problems related to lack of water resources and energy problems, the dam construction industry is dramatically expanding in our country. On the other hand, increase of threats to unify the vital systems of the country, causing financial losses through the use of various explosive devices, Has found a special need in the country. In this research, it has been attempted ...
One from main approaches to checking correctness of a concurrent system are state space methods. They are suitable for automatic analysis and verification of the behaviour of systems. In their basic form, they construct a structure that consist of all states that a system can reach, and all transitions that system can make between those states. This structure is called state space. State spaces...
The explosion of semantic data on the information web, and within digital philosophy, requires new techniques for organizing and linking these knowledge repositories. These must address concerns about consistency, completeness, maintenance, usability, and pragmatics, while reducing the cost of double experts trained both in ontology design and the target domain. Folksonomy approaches address co...
Potential explosion hazard of carbonaceous nanoparticles: Explosion parameters of selected materials
Introduction: Chemical industries often have risks for the environment and communities, due to the use of complex facilities and processes. Also, in the ammonia tanks, the probability of risk of explosion is high, owing to their specific characteristics. The aim of this study is to evaluate the risks of explosion scenario at the ammonia tank in the Kermanshah petrochemical complex Material and...
مقدمه. سندرم زجرتنفسی نوزادان (infant respiratory distress syndrome) ، یک بیماری حاد ریوی است که معمولا نوزادان نارس به آن مبتلا می شوند. در این بیماری، ریه نابالغ و غیر عملکردی است. در واقع نقص در سورفاکتانت باعث ایجاد این بیماری می شود. سورفاکتانت باعث کاهش کشش سطحی آلوئول ها می شود و در نتیجه از کلاپس و بسته شدنشان جلوگیری می کند. پروتئین abca3 ترنسپورتر لیپیدهای سورفاکتانت، نقش بسیار مهمی د...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید