the main purpose followed in this study was to identify and analyze the mechanisms of nanotechnology development in iranian agricultural sector. the research method was an analytical- explanatory one. the statistical population of the study consisted of researchers of national agricultural research institutions/ centers (n= 170). according to morgan& krejcie table, 120 persons were selected thr...

OBJECTIVES To study the smoking habits of 6th year Portuguese medical students and assess their knowledge and acceptance of anti-smoking measures and how they felt these would impact on public health. MATERIAL AND METHODS We conducted a descriptive cross-sectional study, in which a self-administered, anonymous questionnaire was made available online to the target population (6th year Portugue...

INTRODUCTION An assessment was made of general symptoms in patients with psychogenic nonepileptic seizures (PNES), comparing those who do versus those who do not accept the diagnosis. METHOD A questionnaire pilot study of newly diagnosed psychogenic nonepileptic seizure patients confirmed by video electroencephalography (EEG) was carried out, using a 59-item general symptom questionnaire, wit...

This study examined the mental and medical health care utilization of World War II (WW II) survivors and the characteristics of survivors seeking professional health care. Forty seven years after the end of WW II, a random sample of 4,057 Dutch WW II survivors answered a four-page questionnaire; 1,461 persons subsequently answered an extensive follow-up questionnaire. Twenty-two percent had sou...

In Caenorhabditis elegans, the recent advances in high-throughput quantitative analyses of natural genetic and phenotypic variation have led to a wealth of data on genotype phenotype relations. This data has resulted in the discovery of genes with major allelic effects and insights in the effect of natural genetic variation on a whole range of complex traits as well as how this variation is dis...

The dominance of proteins over nucleic acids in biological receptors and catalysts is generally explained by the presence of 20 amino acids as compared to the four bases found in DNA and RNA. But what if the chemical diversity of nucleic acids was increased through the addition of large numbers of protein-like side chains? Would the synthesis of highly functionalized DNA libraries enable the ev...

We study alternative types of Steiner points (to circumcenters) for computing quality guaranteed Delaunay triangulations in three dimensions. We show through experiments that their effective use results in smaller (in the number of tetrahedra) triangulations than the output of the traditional circumcenter refinement methods.

We present a very simple, cryptographic, Byzantine-agreement protocol that, with n = 3t + 1 players, t of which are malicious, halts in expected 9 rounds.