نتایج جستجو برای: 03 and zero mm
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it is generally recognised that ‘zero’ as we understand the concept today originated in two geographically separated cultures: the maya and indian. however, if zero merely signified a magnitude or a direction separator (i.e. separating those above the zero level from those below the zero level), the egyptian zero, nfr, dating back at least four thousand years, amply served these purposes. if ze...
The use of micromobility (MM), a form sustainable urban mobility which has expected effects such as reducing traffic congestion and greenhouse gases, been rapidly increasing across the world. However, this growth resulted in considerable number MM-related accidents. Most previous studies have explored MM user injuries to improve safety users, but threat pedestrians by is not yet fully understoo...
The nervous system has an important and vital role in the human body, but unfortunately the repairment of damaged nervous tissue is very slowly. For a long time, the scientists have been involved in finding ways to speed up this process. Radiation of low power He-Ne laser has been suggested to as a way to improve this issue. In this study, 20 rats were divided randomly into control and case gro...
Cadmium is a toxic unnecessary element for humans and plants which is easily absorbed by plants. Genetic variation in cadmium accumulation provides an opportunity for breeding programs to select genotypes with low cadmium. Due to the high cost of plant tissue analysis to determine the amount of cadmium, use of markers to make efficient selection of low cadmium accumulating genotypes is an effec...
In this study, nanoscale zero-valent copper (nZVC) as catalyst activated persulfate (PS) was used for the degradation of p-chlorophenol (p-CP) under ultrasonic (US) irradiation in aqueous solution. The effect of different operational parameters such as solution pH (3.5-10.5), PS concentration (1-7.5 mm/L), nZVC dosage (5-35 mg/L) and initial p-CP concentration (10-100 mg/L) were evaluated at di...
for an arbitrary ring $r$, the zero-divisor graph of $r$, denoted by $gamma (r)$, is an undirected simple graph that its vertices are all nonzero zero-divisors of $r$ in which any two vertices $x$ and $y$ are adjacent if and only if either $xy=0$ or $yx=0$. it is well-known that for any commutative ring $r$, $gamma (r) cong gamma (t(r))$ where $t(r)$ is the (total) quotient ring of $r$. in this...
This experiment was performed to study osmoregulators in sugar beet under salinity stress, and determine the best method for screening of tolerant and susceptible cultivars, in the greenhouse of Shahid Chamran University of Ahvaz during 2009-2010 growing season. Three sugar beet cultivars (BR1, Jolgeh & Rassoul) were grown under three salinity levels including control (Zero), 100 and 200 mM NaC...
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