plant growth promoting rhizobacteria (pgpr) are known to influence plant growth by various director indirect mechanisms. thirty–two strains were isolated from 15 soils sampled in central iran, byusing and comparing three different methods. the screening of soil samples by means of soil paste–plate method combined with isolation on mannitol agar proved to be the best strategy in terms ofreliabil...

purpose: since explosive blasts continue to cause casualties in both civil and military environments, there is a need for an understanding of the mechanisms of blast trauma at the human organ level, plus a more detailed predictive methodology. the primary goal of this research was to develop a finite element model capable of predicting primary blast injury to the lung so as to assist in the dev...

Increasing the mass of a wall system as well ability to absorb energy can improve blast resistance. The role ductile materials attached externally tension side has been studied extensively ductility and In present study, use hyperelastic materials, added internally systems, was analyzed determine static resistance those systems. this paper, adding shredded rubber concrete mix replacement for co...

The materials that we use always have some defects. Under static, cycling or dynamic load the as a function of crack size and environment can initiate fracture. mechanism depends on several factors, like material properties, type stress kind. traditional fracture mechanics theories suggest solutions to predict crack-grow are well known in case elastic-plastic behaviour also for brittle under di...

A 3D numerical model was presented to investigate the blast-induced damage characteristics of highly stressed rock mass. The RHT (Riedel, Hiermaier, and Thoma) in LS-DYNA used simulate its parameters were calibrated by a physical test. Based on model, influences confining pressure free surface span investigated. results show that under uniaxial loading, crater volume increases with increases. s...

Physiological alterations, anxiety, and cognitive disorders are strongly associated with blast-induced traumatic brain injury (blast TBI), and are common symptoms in service personnel exposed to blasts. Since 2006, 25,000-30,000 new TBI cases are diagnosed annually in U.S. Service members; increasing evidence confirms that primary blast exposure causes diffuse axonal injury and is often accompa...

to determine rice yield loss resulting from blast disease (magnaporthe grisea) at the corp's different growth stages, a field experiment was conducted at the rice research institute of iran, rasht. rice local cultivar hashemi was transplanted to 3×4m plots for the experimental treatments (time of disease evaluation) each treatment was replicated 4 times. under natural infection conditions,...

Rice blast is a destructive disease caused by Magnaporthe oryzae, and it has a large impact on rice production worldwide. Compared with leaf blast resistance, our understanding of panicle blast resistance is limited. The japonica landrace Jiangnanwan from Taihu Lake region in China shows highly resistance to panicle and leaf blast. In this study, three generations (F2:5, F2:6, F2:7) consisting ...

A number of experimental models of blast brain injury have been implemented in rodents and larger animals. However, the variety of blast sources and the complexity of blast wave biophysics have made data on injury mechanisms and biomarkers difficult to analyze and compare. Recently, we showed the importance of rat position toward blast generated by an external shock tube. In this study, we furt...