introduction: burden of hiv and aids is considerably different among regions and countries of the world. the aim of this study was to assess of inequality in the prevalence of hiv, according to human development index among countries of the world.methods: in this study the desired outcome was prevalence of hiv, which estimated in 100 countries in 2012. the annual report of unaids was used for p...

aridity and drought are two inevitable occurrences of the climate change in the region. so, any kinds of planning and futurism, without regard to them, lead to failure. climate change cause drought phenomenon. the anomalies and irregularities in the precipitation mainly cause drought. fars province, one of the important centers of agriculture, population and industry in the country, with specif...

g-oryzanol is one of the strongest antioxidants. it inhibits oxidation and is only present in rice bran. this composition decrease cholesterol, which decreases the risk of atherosclerosis. ther prestn study extracted antioxidant from two varieties of rice bran (zayandeh rood and sazandegi) using methanol solvent and percolation. the extracts were added to edible oil without antioxidants in 100 ...

the first zagreb index $m_1$ of a graph $g$ is equal to the sum of squaresof degrees of the vertices of $g$. goubko proved that for trees with $n_1$pendent vertices, $m_1 geq 9,n_1-16$. we show how this result can beextended to hold for any connected graph with cyclomatic number $gamma geq 0$.in addition, graphs with $n$ vertices, $n_1$ pendent vertices, cyclomaticnumber $gamma$, and minimal $m...

conclusions oral health behavior-related factors can influence patients’ periodontal status and oral hygiene levels. results in total, 50.8% of participants had cpi 2, and the average of sohi was 1.97 ± 0.7 (fair to poor). among lifestyle variables, smoking and physical activity each had a significant relationship with periodontal health (p = 0.0001 and p = 0.001, respectively). there were also...

in this paper, a novel topological index, named m-index, is introduced based on expanded form of the wiener matrix. for constructing this index the atomic characteristics and the interaction of the vertices in a molecule are taken into account. the usefulness of the m-index is demonstrated by several qspr/qsar models for different physico-chemical properties and biological activities of a large...