نتایج جستجو برای: is visible.

تعداد نتایج: 7264271  

Journal: :Il Nuovo Cimento A 1997

Journal: :Neuroscience of Consciousness 2021

1995
C. G. Bollini

We suggest that the Higgs might be unobservable as a free particle, due to its origin at a symmetry breaking mechanism. The standard model is kept intact, only the definition of the vacuum for the Higgs is changed. With the new (natural) definition, the Higgs propagator is half advanced and half retarded. This Green function is compatible with the absence of free particles.

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی 1389

armenias geopolitics and its historical experience have had a determining impact on the character of its foreign policy .present-day armenia is a small, landlocked country with _11,620 square miles area armenias landlocked nature makes it dependent on the benevolence of its neighbors for access to the outside world a fact that gives it a sense of isolation and vulnerability. as it was indic...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده شیمی 1389

in this thesis, a new optically active poly(amide-imide) (pai) was synthesized by the indirect polycondensation reaction of the l-phenylalanine based diacid chloride and 4,4?-diaminodiphenylether in the presence of triethylamine in n-methyl-2-pyrrolidone. the formation of pai was confirmed by ftir, 1h nmr and elemental analysis. in next step, the surface of titanium dioxide (tio2) nanoparticles...

Journal: :Journal of the Visualization Society of Japan 2000

Journal: :Proceedings of the Royal Society of Medicine 1924

Journal: :The Open Psychology Journal 2011

Journal: :novelty in biomedicine 0
mohammadreza nazari department of optometry, faculty of rehabilitation sciences, shahid beheshti university of medical sciences, tehran, iran saeed rahmani department of optometry, faculty of rehabilitation sciences, shahid beheshti university of medical sciences, tehran, iran bahram khosravi department of optometry, faculty of rehabilitation sciences, shahid beheshti university of medical sciences, tehran, iran seyyed mehdi tabatabaei

background: wearing spectacles is the most common approach in correcting the refractive errors worldwide. due to harmful effects of overexposure to solar ultraviolet radiations, the usage of multi-layer coatings in ophthalmic lenses has recently been increased. these lenses can reduce the reflections and hence increase the transmission of visible light; they can also decrease the transmission o...

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