نتایج جستجو برای: film characteristics

تعداد نتایج: 745334  

Journal: :Applied optics 1995
J D Downie

The transmission properties of some bacteriorhodopsin-film spatial light modulators are uniquely suited to allow nonlinear optical image-processing operations to be applied to images with multiplicative noise characteristics. A logarithmic amplitude-transmission characteristic of the film permits the conversion of multiplicative noise to additive noise, which may then be linearly filtered out i...

Journal: :هنرهای تجسمی 0
رزیتا صفری صدیق مدرس گروه ارتباط تصویری، دانشکده ی معماری و هنر، دانشگاه گیلان، رشت سودابه صالحی استادیار گروه ارتباط تصویری، دانشکده ی هنرهای تجسمی، دانشگاه هنر

a title sequence is the beginning and the audience’s first center of attention to the film, in which the film’s title, key production and cast and crew along with some special notions related to the film’s content are introduced through typography. a film title sequence may include live action, animation, music, still images and graphics. with the invention of the cinematograph, in order to ide...

Journal: :Physics in medicine and biology 2005
Martin J Butson Tsang Cheung Peter K N Yu

Gafchromic XR type-R radiochromic film is a relatively new product designed for use at clinical diagnostic x-ray energies both qualitatively and quantitatively. This short note investigates the energy response characteristics of this high-sensitivity radiochromic film for both diagnostic and therapeutic x-ray energies. Results are also compared to conventional silver halide x-ray film for energ...

پایان نامه :0 1371

in order to examine the ecological conditions and characteristics of fraxinus excelsior l. in the northern forests of iran 6 main areas as well as some miscellaneous ones , have been selected in the region respectively in : lomir2, shafaroud , park - e-noor , ahlam , alandan and noor.

2017
Seong Baek Yang Sung Hun Yoo Joon Seok Lee Jong Won Kim Jeong Hyun Yeum

Almost general poly(vinyl alcohol) (PVA) films were prepared by the processing of a PVA solution. For the first time, a novel poly(vinyl alcohol) (PVA) film was prepared by the saponification of a poly(vinyl acetate) (PVAc) film in a heterogenous medium. Under the same saponification conditions, the influence of saponification time on the degree of saponification (DS) was studied for the prepar...

Journal: :Journal of radiation research 2012
Katsumi Shima Kunihiko Tateoka Yuichi Saitoh Junji Suzuki Yuji Yaegashi Kazunori Fujimoto Takuya Nakazawa Akihiro Nakata Tadanori Abe Sho Imai Kouichi Sakata Masato Hareyama

The post-exposure density growth (PEDG) is one of the characteristics of radiochromic film (RCF). In film dosimetry using RCF and a flatbed scanner, pixel values read out from the RCF are converted to dose (hereafter, film dose) by using a calibration curve. The aim of this study is to analyze the relationship between the pixel value read out from the RCF and the PEDG, and that between the film...

2017
M. Cadene M. Rolland M. J. M. Abadie

2014 Photovoltaic devices have been obtained by a direct polymerization of undoped (or p-type doped) thin film (CH)x layer onto a polycrystalline cadmium sulfide film. The morphology of the contact is observed by S.E.M. microscopy. The electrical characteristics of this device are studied in the dark or under illumination. The main result, at AM1, 100 mW/cm2 with doped (CH)x correspond to 0.5 p...

Journal: :journal of biomedical physics and engineering 0
m t bahreyni toosi medical physics research center, mashhad university of medical sciences, mashhad, iran n mohammadian medical physics research center, mashhad university of medical sciences, mashhad, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) m ghorbani medical physics research center, mashhad university of medical sciences, mashhad, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) f khorshidi medical physics research center, mashhad university of medical sciences, mashhad, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) f akbari medical physics department, reza radiation oncology center, mashhad, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) c knaup comprehensive cancer centers of nevada, las vegas, nv, usa

objective: radiochromic ebt3 film is a later generation of radiochromic films. the aim of this study is to compare ebt and ebt3 radiochromic films in radiotherapy fields of breast cancer. methods: a rando phantom was irradiated by a 6 mv siemens primus linac with medial and lateral fields of radiotherapy of breast cancer. dosimetry was performed in various points in the fields using ebt and ebt...

2014
Pan Wu

The S parameters, attenuation characteristics and group delay characteristics of the Teflon tube have been analyzed in the paper. Firstly, the S parameters of metal and polymer tube with the same structure are compared. Then the transmission properties of the simple terahertz Teflon tubes and terahertz Teflon tubes which are coated metal film by three different ways are simulated, and the advan...

2010
Shuvro Chowdhury Esmat Farzana Golam Sarwar Ziaur Rahman Khan

The threshold voltage and capacitance voltage characteristics of ultra-thin Silicon-on-Insulator MOSFET are greatly influenced by the thickness and doping concentration of the silicon film. In this work, the capacitance voltage characteristics and threshold voltage of the device have been analyzed with quantum mechanical effects using the Self-Consistent model. Reduction of channel thickness an...

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