نتایج جستجو برای: منحنی های dsc

تعداد نتایج: 488050  

وجود ژل درپلی بوتادین اولیه باعث کاهش میزان اتصال شیمیایی و چسبندگی در طول فرایند تولید و پخت تایر شده و در نتیجه موجب ترک شیار می­گردد. بنابراین در این تحقیق تجزیه حرارتی نمونه­های پلیمری PBR در دمای 650-0 درجه سانتیگراد توسط روش­های STA مورد بررسی و مطالعه قرار گرفت. تجزیه هم دمای نمونه­های پلیمری با درصد ژل مختلف در شرایط یکسان نشان داد که اکسیداسیون و تجزیه  نمونه­ها در سه مرحله مختلف صورت ...

در تحقیق حاضر استحاله های چند مرحله ای مارتنزیتی در تک کریستال آلیاژ Ni51Ti49 با روش کالریمتری تفرقی روبشی مطالعه شده است. نمونه ای از آلیاژ مذکور پس از عملیات آنیل محلولی تحت پیر سازی در C˚400 به مدت 10 دقیقه تا 50 ساعت قرار گرفت. بلافاصله پس از هر مرحله، عملیات پیرسازی و آزمایش DSC روی نمونه انجام شد. نتایج نشان داد که استحاله مارتنزیتی در زمان های پیرسازی کم (10 تا 45 دقیقه) در دو مرحله، متو...

2008
C. Burigana

We present an analysis of the dipole straylight contamination (DSC) for spinning space-missions designed to measure CMB anisotropies. Although this work is mainly devoted to the Planck project, it is relatively general and allows to focus on the most relevant DSC implications. We first study a simple analytical model for the DSC in which the pointing direction of the main spillover can be assum...

2015
Alexander M. Brannan William A. Whelan Emma Cole Valerie Booth Ayyalusamy Ramamoorthy

Differential Scanning Calorimetry (DSC) of intact Escherichia coli (E. coli) was used to identify non-lipidic targets of the antimicrobial peptide (AMP) MSI-78. The DSC thermograms revealed that, in addition to its known lytic properties, MSI-78 also has a striking effect on ribosomes. MSI-78's effect on DSC scans of bacteria was similar to that of kanamycin, an antibiotic drug known to target ...

2006
J. A. Maine G. Phani I. L. Skryabin

Arrays of thin-film solar cells based on dye-sensitised nanocrystalline oxides (DSC) promise low-cost electricity especially where continuous direct insolation is unavailable. However, the optimisation of arrays of DSC is not straightforward because of the lower power levels obtained and the corresponding increased stringency needed when calculating the production tolerances permissible in the ...

Journal: :AJNR. American journal of neuroradiology 2011
T Hirai M Kitajima H Nakamura T Okuda A Sasao Y Shigematsu D Utsunomiya S Oda H Uetani M Morioka Y Yamashita

BACKGROUND AND PURPOSE QUASAR is a particular application of the ASL method and facilitates the user-independent quantification of brain perfusion. The purpose of this study was to assess the intermodality agreement of TBF measurements obtained with ASL and DSC MR imaging and the inter- and intraobserver reproducibility of glioma TBF measurements acquired by ASL at 3T. MATERIALS AND METHODS T...

1999
B. Q. Han S. R. Agnew D. C. Dunand

Discontinuously reinforced aluminum metal matrix composites (MMCs) with about 20 vol.% reinforcement produced by powder metallurgy (PM) are attractive for many structural applications because of their high specific strength and stiffness. While they exhibit reduced ductility and toughness at room temperature, many of them can be superplastically deformed at high-strain rates in the vicinity of ...

2017
Jie Han Yumei Zhou Yuxiu Zheng Miaomiao Wang Jianfeng Cui Pengxiang Chen Jinming Yu

High body mass index (BMI) has been inconsistently associated with overall survival (OS) of digestive system cancers (DSCs). This meta-analysis was conducted to investigate whether high BMI was associated with DSCs prognosis. 34 studies were accepted, with a total of 23,946 DSC cases. Hazard ratios (HRs) with 95% confidence intervals (95% CIs) for OS in BMI categories from individual studies we...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2002
Takaya Takei Kazuo Kurosaki Yuko Nishimoto Yoshinori Sugitani

Measurements of DSC, NMR and high-frequency spectroscopy have been done on PEO-H2O and PEO-H2O-HQ mixed systems. DSC measurements show that water molecules contained in PEO are divided roughly into two species: freezable water and non-freezable water. By 1H-NMR measurements, PEO and H2O protons show an absorption peak around 3.6 ppm and 4.5 ppm, respectively. All the PEO-H2O samples containing ...

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