نتایج جستجو برای: damaged and destroyed and trees bole wounds location
تعداد نتایج: 16859155 فیلتر نتایج به سال:
the main aim in this study was to collect the experiences of iranian researchers about sulfur mustard (sm) and provide a guideline for the prevention of abuse for this dangerous agent. we searched valid national and international databases using related key words in the two languages. we found 193 articles which had been published in medical journals. among them, 25 articles had some implicatio...
A major component of sustainable forest management are the stands left behind after logging operation. Large mechanized harvesting equipment involved in current can inflict damage on residual trees; and pose a risk mortality from diseases, natural calamities, and/or degrade future economic value. The primary objective this study was to evaluate stand under different methods silvicultural prescr...
In the Shafaroud forest, logging operation is generally performed by using selective cutting methods. Chainsaw and cable skidder are two main forest machines for harvesting of this forest. However, forest harvesting operations result in serious residual stand damage during felling, winching and skidding operations in this forest. Residual stand damage resulting from selective cutting was asses...
conclusions in our case the prfg completely resolved a long-standing fistula resistant to exhaustive conservative management. the treatment with prfg has been proved to be effective in the selected cases and it seems that traumatic esophago-cutaneous fistula may be one of these selections. application of fibrin sealant should be considered early in the management of these difficult clinical pro...
Total tree volume estimation is an integral part of forest growth and yield forecasting. Complex formulae are used to estimate bole volume by section, based on relationships proposed by Huber, Smalian and Newton. All these relationships require many measurements of bole diameters at certain heights that are difficult to obtain on standing trees especially when diameter measurements have to be t...
the log damage and value loss were examined by felling and bucking function, species, and damage type, in kheyrud forest in namkhaneh district in the hyrcanian forest of iran. in order to calculate the wood value following tree felling and bucking, 250 trees and 167 logs consisting of beech and hornbeam species were measured. there were five types of damage recorded following the tree felling o...
introduction: traumatic arteriovenous fistula (avf) called to an abnormal relationship between artery and vein which occurs in 10% of arterial traumas. if treatment of avf due to trauma delayed, different outcomes including heart failure, varices and varicose ulcers may accure. in case of chronic traumatic avf, open surgery may lead to remarkable outcomes, presence of many lateral veins and var...
introduction: standard codes and their descriptions are important tools for research, design, implementation and evaluation of the injury control program and its sub-categories. methods: in this research the medical records of 735 patients diagnosed with injuries, burns or poisonings from teaching-hospitals of the iran, tehran and shahid beheshti medical universities (n=22) were selected to be ...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید