نتایج جستجو برای: uv spectrophotom

تعداد نتایج: 71014  

Journal: :Photodermatology, photoimmunology & photomedicine 2000
A V Parisi M G Kimlin L Mulheran L R Meldrum C Randall

The research in this paper quantifies the solar erythemal UV exposures to the skin through a common summer garment during outdoor activities. The erythemal exposures under the garment for the wet white garment exceeded a MED (minimum erythemal dose) at some anatomical sites in summer for a two-hour period. An erythemal exposure of 1.7 MED, in excess of the occupational limit for UV exposure, wa...

Journal: :Journal of experimental botany 2007
Bo Zhou Yuhua Li Zhiru Xu Haifang Yan Shinichiro Homma Saneyuki Kawabata

Ultraviolet A (UV-A)-mediated regulation of anthocyanin biosynthesis was investigated in swollen hypocotyls of the red turnip 'Tsuda'. The shaded swollen hypocotyls which contained negligible anthocyanin were exposed to artificial light sources including low fluence UV-B, UV-A, blue, red, far-red, red plus UV-A, far-red plus UV-A, and blue plus red. Among these lights, only UV-A induced anthocy...

2005
Kenneth Knoblauch

A simple method is introduced for analyzing error score distributions from the Farnsworth-Munsell 100-Hue test. The method involves fitting a sine wave directly to the error distribution, and produces estimates of three parameters that characterize the severity of the defect, the degree of bipolarity, and the orientation of the axis of bipolarity, if one is present. The method produces good est...

Journal: :Microelectronics Journal 2009
B. Dierre X. L. Yuan T. Sekiguchi

The effect of hydrogenation on the intensity evolution of ZnO single crystal under electron beam irradiation was investigated by cathodoluminescence (CL). Without hydrogenation, the ultraviolet (UV) emission for O-face decreases exponentially and reaches a constant value with e-beam irradiation, while that for Zn-face once increases and then decreases. The hydrogenation significantly increases ...

2008
Renata Kallosh Ching Hua Lee Tomas Rube

We present the explicit expressions in N=8 supergravity for the bosonic 4-particle tree and 1-loop amplitudes including vectors and scalars. We also present the candidate 4point UV divergences in a form of helicity amplitudes, corresponding to 3-loop manifestly N=8 supersymmetric and Lorentz covariant counterterm. This may shed some light on the 3-loop finiteness of N=8 SG and on a conjectured ...

2013
Chang Kook Hong Hyun-Seok Ko Eun-Mi Han Je-Jung Yun Kyung-Hee Park

We have successfully introduced green phosphors LaPO4:Ce, Tb (G4) or (Mg, Zn)Al11O19:Eu (G2) into TiO2 photoelectrode of dye-sensitized solar cells. The conversion efficiency of the G4-doped device was enhanced by 30% compared with the pristine TiO2 photoelectrode. The green phosphor doped at 5-wt.% ratio contributed to the reduction of resistances of the surface and interface of the photoelect...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان - دانشکده علوم پایه 1393

اثرات تابش uv روی اجسام زیستی یک موضوع مهم در طی سه ده? گذشته شده است هدف از این پژوهش بررسی و مقایس? شدت های مختلف اشع? uv بر شاخص های فیزیولوژیکی جلبک سبز chlorella vulgaris و سیانوباکتری anabaena sp. است. نتایج نشان داد با افزایش شدت پرتو uv-c تا 12 ساعت، کلروفیل a و محتوای فیکوبیلوپروتئین ها ( آلوفیکوسیانین، فیکوسیانین، فیکواریترین) بر حسب وزن خشک در مقایسه با کنترل به طور معنی داری کاهش یا...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بوعلی سینا - دانشکده علوم پایه 1391

پلی آنیلین، پلی آنیلین/تیتانیوم دی اکسید، پلی آنیلین/روی اکسید و نانو کامپوزیت پلیمری رسانای جدید پلی آنیلین/تیتانیوم دی اکسید+روی اکسید بوسیله الکتروپلیمریزاسیون درجا روی سطح الکترود طلا سنتز شده اند. پلی آنیلین و فیلم های نانو کامپوزیتی توسط تکنیک ولتامتری چرخه ای، اسپکتروسکوپی ft-ir ، اندازه گیری مقاومت درجا، اسپکتروسکوپی uv-vis درجا و میکروسکوپ های الکترونی روبشی و عبوری بررسی شدند. اختلاف ...

Journal: :environmental health engineering and management 0
kolsoom mohammad moradi environment health engineering, school of public health, hormozgan university of medical sciences, bandar abbas, iran kavous dindarloo environment health engineering department, school of public health, hormozgan university of medical sciences, bandar abbas, iran vali alipour environment health engineering department, school of publish health, hormozgan university of medical sciences, bandar abbas, iran mohsen heidari environment health engineering department, school of publish health, hormozgan university of medical sciences, bandar abbas, iran

background: bromide is found naturally in groundwater and surface water. the rapid growth of industrial activities, drainage of surface runoff, and use of methyl bromide in pesticides has increased bromide discharge to the environment. disinfection of water-containing bromide causes the creation of additional products of organo-halogenated that are considered cancer-causing agents. in this stud...

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