نتایج جستجو برای: cds

تعداد نتایج: 7904  

2015
Mikalai V Malashchonak Alexander V Mazanik Olga V Korolik Еugene А Streltsov Anatoly I Kulak

The photoelectrochemical properties of nanoheterostructures based on the wide band gap oxide substrates (ZnO, TiO2, In2O3) and CdS nanoparticles deposited by the successive ionic layer adsorption and reaction (SILAR) method have been studied as a function of the CdS deposition cycle number (N). The incident photon-to-current conversion efficiency (IPCE) passes through a maximum with the increas...

Journal: :Faraday discussions 2017
Hyunwoong Park Hsin-Hung Ou Minju Kim Unseock Kang Dong Suk Han Michael R Hoffmann

The photocatalytic production of molecular hydrogen (H2) on ternary composites of Pt, CdS, and sodium trititanate nanotubes (NaxH2-xTi3O7, TNTs) is examined in an aqueous 2-propanol (IPA) solution (typically 5 vol%) at a circum-neutral pH under visible light (λ > 420 nm). The H2 production rates are dependent on the Pt-loading level, and the optimum production rate in the Pt/CdS/TNTs is approxi...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم انسانی 1390

چکیده: در این رساله نانوذرات نیمرسانای cds با استفاده از روش های ترموشیمیایی و روش تابش امواج مایکروویو سنتز شده اند. نانوذرات سنتز شده آبدوست بوده و گسیل سفید رنگ در محدوده 400-750 nm را نشان دادند. این گسیل پهن به تله های سطحی cds مربوط می شود. نانوذرات سنتز شده برای ساخت قطعه نورگسیل با ساختار ito/pedot-pss/pvk/cds/al استفاده شدند. برای ساخت قطعه نورگسیل در مرحله اول لایه های pedot-pss و لا...

2008
Hyunwoong Park Wonyong Choi Michael R. Hoffmann

A variety of combinations of CdS, TiO2, and Pt in preparing the hybrid catalysts were studied for hydrogen production under visible light (l > 420 nm) irradiation. The preparation method sensitively influenced the activity of the ternary hybrid catalysts. The formation of the potential gradient at the interface between CdS and TiO2 is necessary in achieving the efficient charge separation and t...

Journal: :Asian journal of andrology 2013
Hui Xu Shui-Qiao Yuan Zhi-Hong Zheng Wei Yan

Although the cytoplasm of spermatids is removed at the end of spermiogenesis, a tiny portion is usually retained in the sperm flagellum, which is termed the cytoplasmic droplet (CD) in mammals. CDs are believed to play a role in sperm volume adaptation. However, we have noticed that epididymal spermatozoa that display initial (flagellation in situ) and progressive motility mostly possess CDs, w...

Journal: :The Ceylon medical journal 2013
C J Wijesinghe P Fonseka C G Hewage

OBJECTIVES To develop a valid and reliable instrument to assess caregiver burden in caregivers of children with cerebral palsy (CP). METHODS A self-administered, multidimensional instrument--Caregiver Difficulties Scale (CDS)--was developed using a combined qualitative-quantitative approach. Items for the preliminary draft were selected from existing caregiver assessment instruments by consen...

Journal: :Bioconjugate chemistry 2014
Shaobo Ruan Jun Qian Shun Shen Jiantao Chen Jianhua Zhu Xinguo Jiang Qin He Wuli Yang Huile Gao

Fluorescent carbonaceous nanodots (CDs) have attracted much attention due to their unique properties. However, their application in noninvasive imaging of diseased tissues was restricted by the short excitation/emission wavelengths and the low diseased tissue accumulation efficiency. In this study, CDs were prepared from glucose and glutamic acid with a particle size of 4 nm. Obvious emission c...

2014
Jongsub Lee Andy Naranjo Stace Sirmans

Using 5-year credit default swap (CDS) contracts on 1,247 U.S. firms from 2003 2011, we show a 3-month formation and 1-month holding period CDS momentum strategy yields 52 bps per month. By incorporating past CDS return signals, we further show traditional stock momentum strategies avoid abrupt losses during the crisis period and improve their performance by net 104 bps per month. Both within C...

2017
Z. ZHAN S. ZHAO M. XUE

A green approach was developed from the preparation of fluorescent carbon dots (CDs) by using water chestnut as precursor. The preparation of CDs was performed by simple pyrolsis. The as-prepared CDs are uniform in size, and the quantum yield was 12.6% by using quinine sulfate as the reference. Significantly, not only the precursor of CDs and whole synthesis procedure was green, but also the CD...

Journal: :Journal of the American Medical Informatics Association : JAMIA 2013
Brandon M. Welch Kensaku Kawamoto

OBJECTIVE To review the literature on clinical decision support (CDS) for genetically guided personalized medicine (GPM). MATERIALS AND METHODS MEDLINE and Embase were searched from 1990 to 2011. The manuscripts included were summarized, and notable themes and trends were identified. RESULTS Following a screening of 3416 articles, 38 primary research articles were identified. Focal areas of...

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