there are more than 750 counties in 13 provinces and autonomous regionsconstituting 30% of china lands which are facing serious problem of desertification. theseareas are mainly distributed in arid, semi-arid and dry sub-humid areas in the western part ofnortheast china, north central china and most of northwest china. biological methods are theultimate way for drift sand stabilization and a fu...

Zagros Mountains in west of Iran are covered by unique forests and rangelands. Increasing population, low level of development and high dependence of local people on natural resources for primary livelihood needs resulted in degradation of Zagros forests and rangelands. Along with these factors, since the last decade, climate change including severe drought is an important issue in the world, p...

In the primary somatosensory cortex (SI) of non-human primates, receptive field properties have been shown to differ between its sub-areas with increasing convergence in areas 1 and 2 as compared with area 3b. In this study, we searched for a similar functional organization of human SI. We performed fMRI in healthy subjects during separate or simultaneous electrical stimulation of the second an...

Although sub-cortical aphasia is a common neurological disorder, its neural basis is not clear. Recent evidence suggests that hypoperfusion of the cortical language areas may be the primary culprit [1,2]. That is, the subcortical lesion – often including the left striatocapsular region – is associated with decreased cerebral blood flow in the cortex causing impaired language processing. Another...

this paper intends to identify and assess ecotourism potentials of different areas in maranjab desert, kashan district. the research is an applied one, and a descriptive-analytical research. both documentary and field studies have been adopted for data collection and thus identification and prioritization of areas with the highest potential for ecotourism development within the desert district ...

Drought and famine in Sub-Saharan Africa is among the leading contributory causes of vulnerability in pastoral communities. This paper discusses approaches that allow understanding of pastoral indigenous adaptive strategies to drought and famine. It is argued that understanding pastoral livelihood strategies requires a holistic approach. The paper focused on three key approaches namely: sustain...

due to increasing rate of flood risk throughout the world, including iran, it is necessary to identify and prioritize flood-contributing areas for flood control activities. in this study, a new approach on unit flood response method called “flood reduction method” was introduced which is applicable to prioritization of sub-basins for flood control activities. it was used to prioritize upstream ...

Functional neuroimaging studies suggest that neural networks that subserve reading are organized differently in dyslexic readers (DRs) and typical readers (TRs), yet the hierarchical structure of these networks has not been well studied. We used Granger causality to examine the effective connectivity of the preparatory network that occurs prior to viewing a non-word stimulus that requires phono...