The solar UV radiation coming from the sun is considered as main source of microbial germicide and environmental sterilization. objective this study to estimate dose amount time required inactivate coronaviruses by exposure. published trials on 254-nm inactivation under ultraviolet light exposure families equivalent microbe in terms D90 (ultraviolet for 90% inactivation), or any other or/and ge...

BACKGROUND In older persons, a relationship between both higher and lower blood pressure and depression has inconsistently been reported. Blood pressure may be differentially associated with distinct symptom domains of depression. We examined the cross-sectional relation of current systolic blood pressure (SBP), diastolic blood pressure (DBP) and mean arterial pressure (MAP) with different depr...

Ultraviolet (UV) irradiation is commonly applied as a secondary disinfection process in chlorinated pools. UV-based systems have been reported to yield improvements in swimming pool water and air chemistry, but to date these observations have been largely anecdotal. The objectives of this investigation were to evaluate the effects of UV irradiation on chlorination of important organic-N precurs...

A viral fluid containing coronavirus OC43 was smeared onto plastic surfaces and irradiated with light at wavelengths of 222, 254, 275 nm emitted by an excimer lamp, ultraviolet a deep LED, respectively. After irradiation varying durations, the virus on surface collected activity measured to compare inactivation capabilities three wavelengths. We found that 275-nm from LED exhibited inactivating...

In the original publication, sentence Similarly, CNFs resulted in a maximum improvement of 262% Young’s modulus value and 254% σMax (Table 2).

فاصله بین سقوط ایلخانان (736 ق) تا روی کار آمدن صفویان (907 ق) از پرآشوب­ترین و آشفته­ترین دوره­های تاریخ ایران است که عرصه را برای نضج و قدرت­گیری حکومت­های مختلفی در گوشه و کنار ایران فراهم آورد. جغرافیای سیاسی قبایل کُرد در غرب و شمال غرب که صحنه قدرت­نمایی آل جلایر، تیموریان، قراقویونلوها و آق قویونلوها بود از جمله حوزه­های موردتوجه و فعالیت حکومت­های مورد اشاره بود. پژوهش حاضر درصدد پژوهش د...

Different crystal phase with a same chemical structure, polymorphous, is a specific physical characteristic which determine the end usage of pigments especially in high performance ones. Diketopyrrolopyrrole DPP derivatives, as one of the innovative in heterocyclic pigments, follow this pattern. Synthesis of pigment red 254 in selected crystal phase using ionic liquids was achieved without any ...