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تعداد نتایج: 1133155 فیلتر نتایج به سال:
We demonstrate the growth of phosphorus doped Zn(1-x)Mg(x)O nanowire (NW) using pulsed laser deposition. For the first time, p-type Zn(0.92)Mg(0.08)O:P NWs are likely obtained in reference to atomic force microscopy based piezoelectric output measurements, X-ray photoelectron spectroscopy, and the transport property between the NWs and a n-type ZnO film. A shallow acceptor level of approximatel...
A new nano-sized cobalt(II) coordination polymer, (CoL1).0.5DMF.1.5CH3OH(1); [H2L1 = 5-(4-Carboxy phenyl azo) salicyilic acid] has been synthesized by a sonochemical method. The thermal stability of compound 1 was studied by thermo- gravimetric and differential thermal analyses. Nano-structure of this coordination polymer was characterized by elementa...
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با پیشرفت فناوری در سال¬های اخیر لایه های نازک اکسیدهای نیمرسانای شفاف(tco) بر پایه اکسیدروی (zno) واکسیدکادمیومcdo) ) نظیرآلیاژ سه تایی cdzno بطور گسترده برای ساخت قطعات اپتوالکترونیکی مانند سلولهای خورشیدی، بازتاب کننده های گرمایی، ولایه های نازک فتوولتائی مورد توجه قرار گرفته اند. در این کار، ابتدا لایه های نازک cd_x zn_(1-x) o به روش سل-ژل روی زیر لایه های شیشه ای و سیلیکونی انباشت شدند. ...
Thus if x has infinite order then the elements in the set {x|k ∈ Z} are all distinct while if x has order o(x) ≥ 1 then x = e exactly when k is a multiple of o(x). Thus x = x whenever m ≡ n modulo o(x). By the First Isomorphism Theorem, < x >∼= Z/o(x)Z. Hence when x has finite order, | < x > | = o(x) and so in the case of a finite group, this order must divide the order of the group G by Lagran...
During this study, we report the green synthesis of magnetic copper ferrite nanoparticles using tragacanth gum as a reducing and stabilizing agent by the sol-gel method. The green synthesized CuFe2O4 MNPs are characterized by powder X-ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), vibrating sample magnetometer (VSM) and scanning electron microscopy...
Formation o f any kinll:-; ur crys ta l defects is followed hy creatIOn of mechanil.:ul s t resscs wi thim the t:ry:-;tal strut:tun.!. which in turn l.:'IUses l<.lllicc paramc ters to change. these changes resu lt a rclevant disp lacement of the X-ray dilfractogram pcaks. In this wo rk r e la tive tli :-;piaccmcllt ur it certa in peak ( III) of de fect ed and annealed :-;amp!c:.:s of AI a...
Synthesis and characterization of nanowires Hausmannite (Mn3O4) by solid-state thermal decomposition
In this study, we synthesis one-dimensional (1D) manganese(III) Schiff base coordination polymer [Mn(Brsalophen)(μ1,3-N3)]n by reaction of MnCl2·6H2O and tetradentate Schiff base ligand Brsalophen at the presence of NaN3 in methanol and characterized by elemental analyses (CHN) and FT-IR spectroscopy. It was used as a new precurs...
We hypothesized that nitric oxide (NO), in addition to beta-adrenergic effects, may contribute to exercise-induced coronary responses after alpha-adrenergic receptor blockade. Data were analyzed as relationships between coronary sinus (CS) O(2) saturation (CS O(2)sat) or coronary blood flow (CBF) and myocardial O(2) consumption (MVO(2)). As MVO(2) increased, CS O(2)sat fell more (P < 0.05) afte...
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