نتایج جستجو برای: 15 and 5
تعداد نتایج: 17075814 فیلتر نتایج به سال:
ADVERTISEMENT RETURN TO ISSUEPREVIn NanoNEXTIn Nano Volume 15, Issue 5Christen BrownleeChristen BrownleeMore by Christen BrownleeCite this: ACS 2021, 5, 7840–7843Publication Date (Web):May 25, 2021Publication History Published online25 May 2021Published inissue 25 2021https://doi.org/10.1021/acsnano.1c03891Copyright © 2021 American Chemical SocietyRIGHTS & PERMISSIONSArticle Views477Altmetric-C...
in this study, the effects of oleothermal modification on physical and mechanical peroperties of fir wood (abeis sp.) blocks were examined. at first, some blocks of fir wood with 5 × 20 × 120 cm dimensions were prepared. the blocks were treated in soybean oil. the effects of 3 factors such as treatments temperature (180and 200 °c), holding time (12 and 15 h) and initial moisture content of wood...
چکیده: برای بررسی تنوع گونه ای کنه های بالاخانواده های tetranychoidea و raphignathoideaباغات و مزارع شهرستان های بناب و ملکان ، نمونه برداری هایی در فصل زراعی سال 1389 از خاک و اندام های هوایی صورت گرفت. در این مطالعه تعداد 2000 اسلاید میکروسکوپی از مجموع نمونه های جمع آوری شد و در مجموع 30 گونه از 15 جنس متعلق به 6 خانواده شناسایی گردید که از بین این تعداد 3 گونه برای فون کل دنیا و 2 گونه برا...
IN THE TITLE COMPOUND (SYSTEMATIC NAME 17-formyl-2,5,8,11,14-penta-oxabicyclo-[13.4.0]nona-deca-15,17,19-triene), C(15)H(20)O(6), the 15-crown-5 ring adopts a twisted conformation. The formyl group is coplanar with the benzene ring. The crystal packing is stabilized by C-H⋯O inter-actions involving the C=O group and ether O atoms as acceptors and methyl-ene CH groups as donors.
in solvo-hydrothermal method, xrd pattern was indicated presence of intermediate of ammonium octatmolybdate and ammonium tetramolybdate, which were changed to stble phase of ?-moo3 annealing. sem images were indicated nanoparticle with semispheical morphology and tem image was demonstrated nanoparticles with a diameter size of 25nm. also in impregnate method. the xrd pattern was shown high crys...
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