نتایج جستجو برای: hazard quotient hq

تعداد نتایج: 78668  

Journal: :International Journal of Environmental Analytical Chemistry 2022

The road shipping has become one of the major metal contamination sources that could impact on roadside soils. Therefore, this study was conducted to determination, possible source identification and potential ecological human health risks assessment trace elements (Cd, Co, Cr, Cu, Mn, Ni, Pb, Zn) in surface soil samples Hamedan, west Iran 2018. In so doing, a total 63 specimens from three main...

2015
Hiroki Tsujinaka Asako Itaya-Hironaka Akiyo Yamauchi Sumiyo Sakuramoto-Tsuchida Hiroyo Ota Maiko Takeda Takanori Fujimura Shin Takasawa Nahoko Ogata

Although recent research showed that advanced glycation endproduct (AGE) and hydroquinone (HQ) are related to the pathogenesis of age-related macular degeneration (AMD), the mechanism how AGE and HQ induce or accelerate AMD remains elusive. In the present study, we examined the effects of AGE and HQ on changes of human retinal pigment epithelial (RPE) cell numbers and found that the viable cell...

Journal: :Jurnal Ilmiah Perikanan dan Kelautan 2021

HighlightHeavy metals (Cu, Zn, Pb, and Cd) in the seawater, sediment, soft part of marine mussels were analyzedBioaccumulation Factor (BAF), Estimated Daily Intake Target Hazard Quotient (THQ) calculatedHeavy sediment found varying concentrationsHealth risk assessment indexes showed low values which means insignificant health hazardAbstractMarine are known as one biological indicators heavy pol...

ژورنال: :شیمی کاربردی 0
حبیب ا... اسکندری habibollah eskandari : [email protected]@uma.ac.ir سیمین عیسی زاده simin isazadeh -

دو روش اسپکتروفتومتری حساس و گزینش پذیر برای اندازه گیری مقادیر ناچیز نیتریت و نیترات ارائه می گردد. دراین دو روش واکنش نیتریت با سولفادیمیدین(sd) و سیزاپراید(cp) در محیط اسیدی انجام شده٬ یون های دیازونیوم تشکیل شده و سپس این یون ها در محیط بازی با 8-هیدروکسی کینولین (hq) واکنش می دهند تا رنگ های آزو مربوطه تشکیل شوند. جذب محلول ها در طول موج های 507 نانومتر برای محصول sd-hq و در طول موج 532 نا...

2018
Se Eun Byeon Young-Su Yi Jongsung Lee Woo Seok Yang Ji Hye Kim Jooyoung Kim Suntaek Hong Jong-Hoon Kim Jae Youl Cho

Hydroquinone (HQ, 1,4-benzenediol) is a hydroxylated benzene metabolite with various biological activities, including anti-oxidative, neuroprotective, immunomodulatory, and anti-inflammatory functions. However, the anti-cancer activity of HQ is not well understood. In this study, the in vitro and in vivo anti-cancer activity of HQ was investigated in various cancer cells and tumor-bearing mouse...

Journal: :Mutagenesis 2009
Zhiying Ji Luoping Zhang Weihong Guo Cliona M McHale Martyn T Smith

Both occupational exposure to the leukemogen benzene and in vitro exposure to its metabolite hydroquinone (HQ) lead to the induction of numerical and structural chromosome changes. Several studies have shown that HQ can form DNA adducts, disrupt microtubule assembly and inhibit DNA topoisomerase II (topo II) activity. As these are potential mechanisms underlying endoreduplication (END), a pheno...

2005
Y. G. Zhang

Two in vivo experiments were conducted to evaluate the effect of novel urease inhibitor hydroquinone (HQ) on ammonia release rate from urea hydrolysis, nitrogen balance, nutrient digestibility and efficiency of microbial protein synthesis. In Exp. 1, twelve crossbred cannulated lambs were randomly assigned within initial body weight block to one of four HQ treatments, which included 0 (control)...

2018
Ashraf M Badawi Mai Abdelraouf Osman

Background Melasma is a difficult-to-treat hyperpigmentary disorder. Ablative fractional laser (AFL)-assisted delivery of topically applied drugs to varied targets in the skin has been an area of ongoing study and research. Objective The objective of this study was to evaluate the efficacy and safety of fractional erbium-doped yttrium aluminum garnet (Er:YAG) laser as an assisted drug deliver...

2017
Gwang Hoon Kim Kyung Ah Cheong Ai-Young Lee

Background Hydroquinone (HQ) is frequently combined with retinoic acid (RA) to enhance lightening efficacy, which may also affect skin irritancy. Although skin irritation leads to postinflammatory hyperpigmentation, little research has been performed to compare skin irritancy between each component and the combination. Objective This study was done to examine whether HQ-RA combination increas...

Journal: :College & Research Libraries News 1981

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید