it is necessary to design a model to implement iran’s comprehensive scientific map. we applied the grounded theory and used 31 in-depth qualitative interview with experts and known scholars of science, technology, and innovation. first the primary codes were identified by the qualitative analysis software (maxqda) and were analyzed and revised until theoretical saturation stage. then, the relia...

background alcoholic hepatitis (ah) is an acute manifestation of alcoholic liver disease with high mortality rates. objectives our aim was to study the molecular mechanisms of ah. materials and methods the differentially expressed genes (degs) in liver between ah and control cases were identified by analyzing the gse28619 microarray data using t-test. the kyoto encyclopedia of genes and genomes...

development of sensors to detect the location and depth of hard pans in real time is a major restriction on the application of site specific crop management (sscm). in this study, a soil compaction profile sensor equipped with four horizontal operating penetro-meters for on-the-go sensing and mapping of the location and intensity of hard pans arti-ficially formed in a soil bin was developed and...

the percent of normal precipitation index (pnpi) is a widely used drought index to provide good estimations about the intensity, magnitude and spatial extent of droughts. the objective of this study was analyzing spatial pattern of drought by pnpi index. in this paper, according to the data of 40 stations in iran, during 1967-2009, the pattern of drought hazard is evaluated. influenced zone of ...

landscape fragmentation has threatened the landscape continuity of ray which was maintainedfrom prehistoric times until recent decades. from 19th century that tehran sprawl growth affected ray’slandscape as a satellite city of tehran, ray experienced rapid landscape fragmentation and underwent manychanges. in order to cope with the threat, the process of changes from landscape fragmentation sho...

‎let $r$ be a $*$-prime ring with center‎ ‎$z(r)$‎, ‎$d$ a non-zero $(sigma,tau)$-derivation of $r$ with associated‎ ‎automorphisms $sigma$ and $tau$ of $r$‎, ‎such that $sigma$‎, ‎$tau$‎ ‎and $d$ commute with $'*'$‎. ‎suppose that $u$ is an ideal of $r$ such that $u^*=u$‎, ‎and $c_{sigma,tau}={cin‎ ‎r~|~csigma(x)=tau(x)c~mbox{for~all}~xin r}.$ in the present paper‎, ‎it is shown that...

the domesticated silkworm, bombyx mori, is of high commercial importance as a silk producer and is also widely used for implementation of basic and applied research. it is important to understand its genome organization using molecular markers for genetic studies and for breeding purposes. in this study, a genetic linkage map using 204 amplified fragment length polymorphism (aflp) markers was d...

in this paper we present a new method for tool-path generation and adaptive interpolation for a three-axis cnc milling machine. this method satisfied the force and / or the error conditions by using a variable-direction variable-feedrate strategy based on maximum feedrate map. the proposed adaptive interpolator modifies the cutting path and the moving direction according to the actual instantan...