light as an important environmental factor, influences many aspects of plant growth and development. leaves are different in some characters including stomatal behavior under shade or light conditions. in this study, the effects of different levels of light intensity on stomatal behavior of two rose cultivars, ‘gulmira’ and ‘red one’, were evaluated under controlled conditions. to obtain differ...

objective(s): there are few reports have demonstrated the effect of a change-in-light experience on the structure and function of hippocampus. a change-in-light experience also affects the circadian pattern of melatonin secretion. this study aimed to investigate developmental effect of exogenous melatonin on synaptic plasticity of hippocampus of light deprived rats. materials and methods: the e...

background: light is an important and adjustable physical factor in the job environment.this study aimed to determine the intensity of natural and mixed light and also the level of ultraviolet radiation in libraries and computer sites of ilam universities in spring 2011.   methods: in this cross-sectional study, 10 libraries, 16 study saloons, and 7 computer sites were selected. luminosity asse...

introduction: knee osteoarthritis (ko) is the most common joint disease for which there is no optimal treatment. monochromatic infrared photo energy (mipe) is a relatively new light modality used to reduce pain and increase circulation. low level laser therapy (lllt) is another light modality used to reduce pain in ko. methods: the aim of this study was to compare the effects of the mipe and ll...

introduction: to study the effects of polarized polychromatic noncoherent light (bioptron) therapy on patients with carpal tunnel syndrome (cts). methods: this study was designed as a randomized clinical trial. forty four patients with mild or moderate cts (confirmed by clinical and electrodiagnostic studies) were assigned randomly into two groups (intervention and control goups). at the beginn...

introduction: the unprotected eye is extremely sensitive to laser radiation and can be permanently damaged from direct or reflected beams. the area of the eye damaged by laser energy is dependent upon the wavelength of the incident laser beam, duration of exposure and tissue characteristics. this study aims to investigate the effect of intense green light from doubled frequency neodymium-doped ...

in this paper, aggregation behaviors of aqueous solutions of short chain hydrophilic ionic liquids (ils), 1 – allyl - 3 - methylimidazolium chloride ([amim]cl), 1 - ethyl - 3 - methylimidazolium chloride ([emim]cl), 1 - butyl - 3 - methylimidazolium chloride ([bmim]cl), 1 - butyl - 3 - methylimidazolium tetrafluoroborate ([bmim]bf4) were investigated using conductivity and laser light scatterin...

resonance light scattering (rls) intensity of silver nanoparticles in the presence of sodium dodecylsulphate was quenched on addition of sulfasalzine. the quenching extent was shown to be proportional to the sulfasalazine concentration. effect of different parameters such as ph, volume and kind of buffer, silver nanoparticles concentration, sodium dodecylsulphate (sds) concentration, and waitin...

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