نتایج جستجو برای: in 2013
تعداد نتایج: 17003256 فیلتر نتایج به سال:
The species of the genus Odilia Durette-Desset, 1973 (Heligmonellidae, Nippostrongylinae) are re-distributed among eight genera of which five are new. This classification is mainly based on certain characters of the synlophe not previously taken into account at the supraspecific level. These characters mainly include the presence or absence of a careen, the relative size of the ridges forming t...
Complex natural products are a proven and rich source of disease-modulating drugs and of efficient tools for the study of chemical biology and drug discovery. The architectures of complex natural products are generally considered to represent significant barriers to efficient chemical synthesis. Here we describe a concise and efficient asymmetric synthesis of 19-dehydroxyl arisandilactone A-whi...
A new species of drywood termite (Kalotermitidae), Cryptotermes colombianus, is described and new records for Cryptotermes cylindroceps and Cryptotermes mangoldi are presented from the Caribbean coast of Colombia. Cryptotermes colombianus is described from two soldiers and genetic sequences. This unusual species differs noticeably from other regional Cryptotermes species for its weak and incons...
Experimental infections of Lymnaea truncatula with a digenean species (Fasciola gigantica, F. hepatica, or Paramphistomum daubneyi) were performed under laboratory conditions to study the effect of four sources of food (microalgae, romaine lettuce, wheat germs, or modified Boray diet) on cercarial production. The mean number of F. hepatica, F. gigantica, or P. daubneyi cercariae was significant...
چکیده تحقیقحاضرمطالعهایتحلیلیوتوصیفیدرمورددلایلتغییرسیاستآمریکادرقبالطالباندرسالهای 2013- 2003 است. اینبررسیبدونتوجهبهاهدافاستراتژیکوکلانآمریکادرقالبمنطقهاییعنیطرحخاورمیانهجدیدامکانپذیرنیست. پسازموقعحوادث 11 سپتامر 2001 درآمریکاوحضورنظامیآمریکادرافغانستانومبارزهباالقاعدهوطالبانمبارزهمستمریبیننیروهایائتلافبهرهبریآمریکاوطالباندراینسالهاادامهداشتهکهاکنوناینسیاستباچرخشسیاستهایآمریکابهسمتمذاکرهومش...
abstract: advertisements are the most accessible type of authentic materials, and this is one reason why they are used more and more in english teaching classes. for this cause, studies in the field of advertisements are very widespread nowadays. for pun is one aspect which makes advertisements more interesting, it is used more than before in advertisements. use of puns makes an advertisement m...
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