نتایج جستجو برای: 1 gene is a hypervariable region among ibv serotypes
تعداد نتایج: 15067648 فیلتر نتایج به سال:
foreign policy takes root from complicated matters. however, this issue may be more truth about armenia. although the new government of armenia is less than 20 years, people of this territory are the first ones who officially accepted christianity. in very past times, these people were a part of great emperors like iran, rome, and byzantium.armenia is regarded as a nation with a privileged hist...
from historical facts to geo-political realities: relation between turkey and armenia ( 1915 – 2010)
armenias geopolitics and its historical experience have had a determining impact on the character of its foreign policy .present-day armenia is a small, landlocked country with _11,620 square miles area armenias landlocked nature makes it dependent on the benevolence of its neighbors for access to the outside world a fact that gives it a sense of isolation and vulnerability. as it was indic...
avian infectious bronchitis (ib) is a widely distributed poultry disease that has huge economic impact on poultry industry. the continuous emergence of new ibv genotypes and lack of cross protection among different ibv genotypes have been an important challenge. the present study was done to evaluate protection caused by two different serotypes’ vaccines (massachusetts & 793/b) in order to eval...
infectious bronchitis virus (ibv) is an acute and contagious viral disease of poultry that affects different systems, including the respiratory tract in particular. ibv causes major economic losses in the poultry industry globally. due to antigenic variation of the causative agent, control of the disease is difficult. to control the disease, many vaccines that belong to different serotypes are ...
introruction khawf in(iran)-herat and mazaresharif and shirkhan bandar in (afghanistan)-dushanbe in (tajikistan)_(kirgizstan)-kashghar in(china) project railway network is under construction that it is as a significant corridor for revitalizing silk road corridor in the region .at the present there are three different gauge in the region central asia with 1,520 mm gauge and turkey-islamic repu...
background: infectious bronchitis virus (ibv) is the causative agent of avian infectious bronchitis, which is characterized by respiratory, reproductive, and renal signs. ibv is a highly variable virus with a large number of genotypes. s1 gene sequencing has been used for molecular epidemiological studies and genotypic characterization of ibv. objective: to better understand the molecular epide...
Infectious bronchitis virus (IBV) causes respiratory disease in chickens all over the world. Infectious bronchitis virus has many serotypes that do not confer cross protection against each other. The current study was designed to know which IBV types were circulating in Jordanian broiler chickens. Tracheal swabs from 175 broiler flocks at the acute phase of respiratory disease were collected. T...
Due to variations in serotypes among different strains of avian infectious bronchitis viruses (IBV), vaccination of chicks with imported vaccines fails to protect them from IBV infections in Taiwan. Therefore, we develop attenuated vaccines from local strains in Taiwan. A Taiwan Group I (TW I) strain was passaged 74 times through specific pathogen-free (SPF) chicken embryonated eggs, and then t...
abstract: in this thesis, we focus to class of convex optimization problem whose objective function is given as a linear function and a convex function of a linear transformation of the decision variables and whose feasible region is a polytope. we show that there exists an optimal solution to this class of problems on a face of the constraint polytope of feasible region. based on this, we dev...
“any science seeks generalities; the aim is to transcend knowledge of particular cases by discovering general regularities or laws” (chesterman, 2001, p. 1). these were the words of chesterman whose paper has served as a typical example of numerous papers carried out on ‘translation universals’ since the mid-nineties. blum-kulka (1986) is among translation studies scholars who proposed ‘explici...
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