نتایج جستجو برای: graphy
تعداد نتایج: 311 فیلتر نتایج به سال:
----------------------------------------------------------------------ABSTRACT-------------------------------------------------------------Steganography is derived from the Greek word steganos which literally means “Covered” and graphy means “Writing”, i.e. covered writing. Steganography refers to the science of “invisible” communication. For hiding secret information in various file formats, t...
In this paper we propose a method to improve thewaveguides for optical communications based on 2-dimen-sional photonic crystals. To this purpose a standard channelwaveguide is sandwiched between two omnidirectionalChigrin-type 1D dielectric layer stacks. The combination oftotal internal reflection and photonic band gap reflectionenables improved confinement of optical si...
Numerical algorithms based on boundary element methods are developed for application to problems in Electrical Impedance Tr graphy (EIT). Two types of EIT problems are distinguished. In the first type internal boundaries of domains of constant conductivit' imaged. For such problems an algorithm based on identifying the shape of the included region is developed, and uses conventional l technique...
SUZUKI, M., OSAWA, S. and HIRANO, M. A Lyeium Chinense Miller Component Inducing Ovulation in Adult Female Rabbits. Tohoku J. exp. Med., 1972, 106 (3), 219-231Intravenous injection of the crude extract from Lycii folium among components of Lycium chinense Miller induced ovulation in the adult female rabbit. Chemical properties of the active component of this crude extract were investigated by d...
graphy for imaging of the different coronary artery segments: a feasibility study. Cardiovasc Ultrasound 2009;7:58. 13. Kajander S, Joutsiniemi E, Saraste M, Pietilä M, Ukkonen H, Saraste A et al. Cardiac positron emission tomography/computed tomography imaging accurately detects anatomically and functionally significant coronary artery disease. Circulation 2010; 122:603–13. 14. Otsuka R, Watan...
Steganography is derived from the Greek word steganos which literally means “Covered” and graphy means “Writing”, i.e. covered writing. Steganography is the art and science of hiding messages in such a way that no one apart from sender and receiver identify the message. The paper describes the steganalysis technique for the detection of secret message in the image. The strong and weak point of ...
Serial femtosecond crystallography (SFX) has opened a new era in crystallo-graphy by permitting nearly damage-free, room-temperature structure determination of challenging proteins such as membrane proteins. In SFX, femtosecond X-ray free-electron laser pulses produce diffraction snapshots from nanocrystals and microcrystals delivered in a liquid jet, which leads to high protein consumption. A ...
Levels of cyclic adenosine monophosphate (cAMP) have been determined in the green alga Chlamydomonas reinhardtii strain CW 15. In the early exponential growth no cAMP was detected, however, in the middle of the exponential growth phase 2.4 pmol cAMP/mg protein were found and the cAMP level increased to 18.8 pmol/mg protein in the stationary phase. An enzyme fraction has been isolated from Chlam...
hiv-related immunosuppression significantly increases the risk of acquiring opportunistic infections. this report describes a 69-year-old man, referred to hospital with decreased consciousness and productive cough. this man was a known case of human immunodeficiency virus positive. the sputum of this patient was positive for salmonella typhimurium. pulmonary auscultation signaled brief and scat...
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