نتایج جستجو برای: chah shur
تعداد نتایج: 174 فیلتر نتایج به سال:
Objective: More than 75 percent of Iran is located in arid and semi-arid then land degradation and desertification are one of the crises ecological. We require a proper understanding of causes and processes of desertification to control the huge phenomenon on the global and regional situation. Because southeast of Iran located in arid land then assessment of desertification is very importance f...
Granodiorite and dioritic intrusive rocks (Middle Eocene age) intruded the Lower-Middle Eocene volcanic rocks at the northern parts of the Torud-Chah Shirin volcano-plutonic belt in north east of Iran. This granodiorite is intruded by small rhyolitic dome in the Damghan turquoise-gold mine. According to all data, these intrusive rocks are related to a common source. The primary magma evolved by...
It is unavoidable for projects of rangeland improvement and development to use key species. One of the successful projects for rangeland improvement and development is to use seeding with technical knowledge, in order to have complex success in poor rangelands that are desert regions. The cultivation of environmentally adaption plants is one of the best biological methods to prevent desertifica...
Every nation has its own ideals that objectifying them is by culture. In the process of this transformation, the architecture and music which come from the culture of each region have a fundamental role. Architecture and music have many similarities in conceptual directions, space, shape and morphology. They also have similarities in the basic and fundamental principles such as proportions, rhy...
The mammalian egg must be fertilized by only one sperm to prevent polyploidy. In most mammals studied to date, the primary block to polyspermy occurs at the zona pellucida, the mammalian egg coat, after exocytosis of the contents of the cortical granules into the perivitelline space. The exudate acts on the zona, causing it to lose its ability to bind sperm and to be penetrated by sperm previou...
chance p ϭ 1.9x10 Ϫ7) to a putative secreted protein from Molecules May Be C. elegans (Figure 1) as well as to human and mouse Glycosyltransferases ESTs (blast p-values <10 Ϫ11). The two most conserved regions of all three subfamil-ies FNG, BRN, and Lex1 (motif 3 and 4 in Figure 1) are also the major hallmarks of the putative glycosyltransfer-Pattern formation during development requires the re...
Past studies from this laboratory have suggested that mouse sperm binding to the egg zona pellucida is mediated by a sperm galactosyltransferase (GalTase), which recognizes and binds to terminal N-acetylglucosamine (GlcNAc) residues in the zona pellucida (Shur, B. D., and N. G. Hall, 1982, J. Cell Biol. 95:567-573; 95:574-579). We now present evidence that directly supports this mechanism for g...
1. Introduction Among sedimentary systems that are rich and poor in terms of sediment load, a different organization of the sand dunes can be seen. Barchan dunes are one of the accumulative landforms of wind that are considered from poor sedimentary systems in desert environments. The dunes are the crescent shape, and have two horns at the end. Along the horns the prevailing wind direction...
one of the most intensive occurrences of magmatism in iran was in the middle jurassic period. among the granitoid intrusions in this period as discrete bodies or complexes can be pointed to aligoodarz, alvand, astaneh, boroujerd, malayer, and chah-dozdan in the sanandaj-sirjan zone; shir-kuh and ayrakan in the central iran zone; shah-kuh, sorkh-kuh and kalateh-ahani in the lut block. these gran...
water distribution method based on the type of water conduits can be divided into two groups, namely, open and closed systems, while on the basis of the energy of the water flow, the two groups are gravity flow and pressurized flow. open channel type conveyance and distribution is achieved by gravity and includes channels made by embankment construction, excavation, or construction of prefabric...
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