نتایج جستجو برای: dta tga
تعداد نتایج: 8405 فیلتر نتایج به سال:
Two nano-sized mixed-ligand Cd (II) coordination polymers; [Cd (4,4' -bpy) (C4H4O4)].1/4 H2O (1) and[Cd(bpy)1.5 (NO3)2].3H2O (2) (bpy=bipiridine) were synthesized by a sonochemical method and characterized by elemental analyses, thermal gravimetric analysis (TGA), differential thermal analysis (DTA), scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FT-IR). The cry...
CuO nano particles were obtained by calcination of nano-sized [Cu(C4H4O4)(bipy)(H2O)2].2H2O (1) and [Cu(2‚2′-bipy)](C4H4O4)0.5(NO3)(H2O) (2) which are two Cu(II) coordination polymers. The two coordination polymers [Cu(C4H4O4)(bipy)(H2O)2].2H2O and [Cu(2‚2′-bipy)](C4H4O4)0.5(NO3)(H2O) were synthesized and characterized by Fourier transform infrared spectra (FT-IR spectroscopy), thermal gravim...
مخلوطهایی از کنسانترهی سلستیت (خلوص 98 درصد) معدن لیکک و کربن اکتیو (98 درصد کربن) تهیه و در اتمسفر آرگن (خلوص 99/99 درصد) احیا شدند. محصولات واکنش احیای کربوترمیک به وسیلهی آزمایشهای (XRD) و (TGA/DTA) بررسی شدند. نتایج آنالیزهای حرارتی و پراش اشعهی ایکس محصولات نشان داد که نخستین نشانههای تشکیل سولفید استرانسیم (SrS) در دمای0C 720 مشاهده میشود. واکنش احیای کربوترمیک به صورت مرحله به مرح...
In current study, the synthesis and characterization of novel thermally stable polyimides (PIs) containing an 1,3,4-oxadiazole moiety based on a diamine, i.e. 2,5-bis(3-amino-4-methyl benzene)-1,3,4-oxadiazole (BAMO), have been reported. The polymers were characterized using FT-IR and elemental analysis (CHN). Thermal and mechanical behaviours of the prepared PIs were studied by thermo-gravimet...
Bu çalışmada, pomza hafif agregası ile değişik oranlarda çimento dozajı arttırılarak oluşturulan harç karışımlarına tinkal atığı eklenmiştir. Beton harçların üretiminde 0-4 mm boyutundaki Nevşehir yöresi asidik kullanılmıştır. Karışımların su/çimento oranı 0.50 olarak sabit tutulmuştur. Üç farklı dozajında her dozajda kontrol ve katkılı olmak üzere toplam 6 karışım oluşturulmuştur. Çeşitli dene...
The dual-process component of Terror Management Theory (TMT) proposes that different types of threats lead to increases in death-thought accessibility (DTA) after different delay intervals. Experimental studies of terror management threats' effect on DTA were collected and coded for their use of explicitly death-related (vs. not explicitly death-related) threats, and for their use of delay and ...
the present work deals with the synthesis and characterization of cds nanoparticles with good thermal stability and optical properties by a novel and simple synthetic route. the nanoparticles were synthesized via chemical precipitation method in a single reaction vessel under ambient conditions. the prepared cds nanoparticles were compared with the bulk cds. the optical properties were determin...
Transportation Research Board is to provide leadership in transportation innovation and progress through research and information exchange, conducted within a setting that is objective, interdisciplinary, and multimodal. The Transportation Research Board is distributing this circular to make the information contained herein available for use by individual practitioners in state and local transp...
Abstract The effect of three types emulsifiers (polyglycerol monostearate ester – E475, sucrose stearate E473 and modified inulin palmitate HP-25) on the starch retrogradation in sponge cake (SC) during storage was investigated. method differential scanning calorimetry (DSC) applied to determine changes staling process. temperature enthalpy endothermic transition decreased when were added. lowe...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید