From the perspective of grassland resources and their sustainable utilization, this paper expounds type characteristics utilization status in Ili River Valley, analyzes main problems re-sources such as annual increase degradation area, increasingly serious soil erosion, imbalance between seasons years production, imperfect mechanism ecological protection, restoration management. This discusses ...

This study determined the factors that influenced usability of a mobile-based intelligent agent called “AskRed.” The design-related were evaluated in terms performance, accuracy, responsiveness, aesthetics, and completeness. software was satisfaction intention to re-use software. received favorable ratings from students. Experts' evaluation recommended strengthening design security, completenes...

Studies of 4Cr5MoSiV1 die steel suggest that under appropriate conditions, additions of rare earth (RE) can enhance tensile property. This improvement is apparently due to the more uniform distribution of carbides and the enhancement of precipitation strengthening after RE additions. In this present work, the effect of the RE addition on the carbides evolution and tensile property of 4Cr5MoSiV1...

Despite their notorious vulnerability, traditional passwords remain important for security. In this paper we describe a method for strengthening passwords. Our method does not require users to memorize or to write down long passwords, and does not rely on smart-cards or other auxiliary hardware. The main cost of our method is that it lengthens the process of checking a password.

the importance of iranian ancient as architectural heritage have to competent international prestige a nd respect due this is important with regard to proper conservation met hods based on non-destructive evaluation methods and non-contact testing providing enough accuracy and speed to bri ng performance to stabilize while correct location and age value of valuable architectural aspect of quant...

in this study, as for the re-casting, surface alloying and re-solidification layer of this alloys at the work piece level machining with wire electro discharge machining (wedm), changes of surface micro hardness with changes of operational parameters has been studied. therefore, study shows using surface alloying phenomena with the diffusion of wire material into the machined surface and select...

Effect of cerium (Ce) on creep strength and microstructure 316LN austenitic stainless steel (316LN steel) at 700 °C/150 MPa was investigated by scanning electron microscopy (SEM), transmission (STEM) thermodynamic calculations. Addition 0.032 wt% Ce to results in a prominent increase life from 313 556 h. enriches titanium nitride nanoparticles, increases slightly the activity diffusion coeffici...