نتایج جستجو برای: species o melanotricha semirom o melanotricha feriedan
تعداد نتایج: 1083425 فیلتر نتایج به سال:
Of 33 nominal species listed by Platnick (2012), 25 species of the genus Opisthoncus are redefined and redescribed here. O. kochi Żabka, 1991, was redescribed by Prószyński (1983) while O. delectabilis Rainbow, 1920, O. eriognathus (Thorell, 1881), O. inconspicuus (Thorell, 1881), O. nigritifemur Strand, 1911 and O. pallidulus L. Koch, 1880 are excluded from the genus. O. clarus Keyserling, 188...
The synthesis and X-ray diffraction analysis of a new acidic salt, [4-methyl-phenyl ammonium][(O-phenyl)(hydroxyl)phosphate], [4-CH3-C6H4NH3][(C6H5O)P(O)(O)(OH)], is reported. This compound crystallizes in the monoclinic system, with space group P21/c (a = 9.5147(4) Å, b = 23.2158(10) Å, c = 13.2740(6) Å and b = 111.244(4)°) with four independent components including two cations and two anions...
در این بررسی، جذب سطحی اکسیژن بر روی سطح ni(111) در آرایش سطحی p(2×2) با کسر پوششی 0.25 ml با استفاده از روش dft مورد بررسی قرار گرفت. ابتدا محاسبات بهینه سازی ساختاری انجام یافت و طول پیوند تعادلی ni-o و فاصله اتم o از سطح بترتیب برابر 1.87 å و 1.17 å بدست آمد. سپس با تغییر مختصات اتم o بصورت استاتیک حول نقطه تعادلی و تطابق تغییرات انرژی حاصل با مدلهای نوسانگر هماهنگ و مورس، فرکانسهای ارتعاشی ...
RAPD markers were used to study variation among 20 taxa in the genus OROBANCHE: O. alba, O. amethystea, O. arenaria, O. ballotae, O. cernua, O. clausonis, O. cumana, O. crenata, O. densiflora, O. foetida, O. foetida var. broteri, O. gracilis, O. haenseleri, O. hederae, O. latisquama, O. mutelii, O. nana, O. ramosa, O. rapum-genistae and O. santolinae. A total of 202 amplification products gener...
Three new species of Oocyclus Sharp, 1882 are described from tropical South America: O. maluz sp. n. (Venezuela), O. miza sp. n. (Venezuela), and O. brunneus sp. n. (Bolivia). New distributional records are provided for O. andinus Short & García, O. coromoto Short & García (newly recorded from Suriname), O. floccus Short & García (newly recorded from Guyana and Suriname), O. iguazu (Oliva), O. ...
The ant genus Odontomachus Latreille is reviewed for Sumatra, the sixth largest island in the world and located in western Indonesia. Previously three species were recorded from the island: O. simillimus F. Smith, O. rixosus F. Smith, and O. latidens Mayr. We add two species to the fauna, O. procerus Emery stat. nov and Odontomachus minangkabau sp. nov. The new species belongs to O. rixosus spe...
In the rice genus (Oryza), about one half of the species are allopolyploids. These species are not only important resources for rice breeding but also provide a unique opportunity for studying evolution of polyploid species. In the present study, we sequenced four biparentally inherited nuclear loci and three maternally inherited chloroplast fragments from all diploid and tetraploid species wit...
جنس onobrychis شامل حدود 170 گونه می باشد که عموماً در شمال غربی آسیا، مناطق مدیترانه ای و مناطق معتدل اروپا و آسیا گسترش دارد. بخش hymenobrychis با حدود 14 گونه یکی از مهم ترین بخش های جنس onobrychis می باشد. در این پژوهش سعی شد تا با استفاده از ویژگی های ریخت شناسی، ریز ریخت شناسی، سیتولوژیک، آناتومی و مولکولی گامی در جهت رفع ابهامات و پیچیدگی های موجود در بین گونه های بخش hymenobrychis برداشت...
in a r etrospective s t udy on the c ancer o f the gal l bladder, done in iran, it s e ems tha t it compr ises 0 . 36% o f a ll the malignant tumors . 1 .7 5% of the patients were fema les and the maximum incidenc e wa s in t he s i x th decade of l i f e. it was interesting t o note that the age ratio bet ween t he males and f ema le s reverses with t he advance o f a ge, s o at the 7th and 8t...
we show that when both sources ( lepton flavor violation sources and cp-violating phases) are present, the electric dipole moment of the electron, $d_e$, receives a contribution from the phase of the trilinear $a$-term of staus, $phi_{a_ au}$. for $phi_{a_ au}=pi/2$, the value of $d_e$, depending on the ratios of the lfv mass elements, can range between zero and three orders of magnitude a...
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