نتایج جستجو برای: ultraviolet spectrophotometry

تعداد نتایج: 48877  

2011
MASASHI GOTO SEIKO ITO YOHTARO KATAGATA

The skin anti-aging effects of orally administered salmon nasal cartilage extract (SNCE), which includes abundant proteoglycan, were investigated using a hairless mouse skin-aging model, in which aging was caused by repetitive ultraviolet B (UV-B) irradiation. Physiological analysis of the skin surface following repetitive UV-B irradiation of 8 weeks revealed inhibition of erythema levels and r...

Journal: :Textile Research Journal 2021

The textile modification technique of calendering was used to change the cover factor wearable textiles in order improve ultraviolet protection and decrease amount radiation transmitted through fabric. Using optical microscopy spectrophotometry, quantifiable changes that occurred after repeated passes calender were measured. It found one pass uncovered area decreased by a two increased 200%. th...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اصفهان - دانشکده علوم 1386

چکیده ندارد.

Journal: :journal of chemical health risks 0
m. khoeini sharifabadi m. saber tehrani a. mehdinia p. abroomand azar s. waqif husain

a simple and sensitive, solid-phase extraction method for the removal of citalopram drug from waste water has been developed by using magnetic nanoparticles modified with surfactant sodium dodecyl sulfate. these magnetic nanoparticles have shown great adsorptive tendency towards citalopram drug. the effect of different parameters influencing the extraction efficiency of this drug were investiga...

Journal: : 2021

Arbutin is the main active ingredient in many herbal medicinal products that have diuretic, antimicrobial, bactericidal, and antioxidant effects. Many of these are mixtures different substances. Therefore, approaches to quality control HMPs can vary significantly. The aim study was compare arbutin assay procedures used arbutin-containing products. Materials methods. Samples following were study...

Journal: :شیمی کاربردی 0
بهروز برفی behruz barfi department of chemistry, semnan university, semnan, iran1گروه شیمی، دانشکده شیمی، دانشگاه سمنان، سمنان، ایران علیرضا اصغری alireza asghari department of chemistry, semnan university, semnan, iran1گروه شیمی، دانشکده شیمی، دانشگاه سمنان، سمنان، ایران مریم رجبی maryam rajabi department of chemistry, semnan university, semnan, iranدانشکده شیمی، دانشگاه سمنان، سمنان، ایران

a user-friendly and inexpensive ionic liquid-based single-drop microextraction (il-sdme) method was developed to preconcentrate trace amounts of aminophenol isomers (aps) from human urine, hair dye and water samples prior to analysis by high performance liquid chromatography-ultraviolet spectrophotometry detection (hplc-uv). under optimum conditions (i.e., 3.5 µl of 1-hexyl-3-methylimidazolium ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید