the nutrient requirements and performance guidelines of management guides are based upon many actual flock results obtained under good environmental and management conditions. in practice and under the prevalent poultry industry situation, through these nutrient levels, iranian farmers cannot attain the performance reported in management guidelines. an estimation of the model of broiler breeder...

a {em 2-rainbow dominating function} (2rdf) of a graph $g$ is a function $f$ from the vertex set $v(g)$ to the set of all subsets of the set ${1,2}$ such that for any vertex $vin v(g)$ with $f(v)=emptyset$ the condition $bigcup_{uin n(v)}f(u)={1,2}$ is fulfilled, where $n(v)$ is the open neighborhood of $v$. the {em weight} of a 2rdf $f$ is the value $omega(f)=sum_{vin v}|f (v)|$. the {em $2$-r...

introduction: in developing countries, rotaviral diarrhea is the cause of death of many children, and is the main etiology of gastroenteritis in children under 2 years old. determination of the prevalence of rotaviral infection can reveal the impact of this infection in this group of the population and provides clues as to the strategies for prevention and treatment protocols for children suffe...

a function $f:v(g)rightarrow {-1,0,1}$ is a {em minusdominating function} if for every vertex $vin v(g)$, $sum_{uinn[v]}f(u)ge 1$. a minus dominating function $f$ of $g$ is calleda {em global minus dominating function} if $f$ is also a minusdominating function of the complement $overline{g}$ of $g$. the{em global minus domination number} $gamma_{g}^-(g)$ of $g$ isdefined as $gamma_{g}^-(g)=min{...

Texas contains a rich but still poorly known cavernicole fauna. Approximately 1,040 terrestrial and 150 aquatic species have been recorded from the state. This number will doubtless greatly increase when large collections, especially of mites, centipedes, and miscellaneous insects, are identified and described. An estimated 81 aquatic and 161 terrestrial species are believed to be sufficiently ...