Deprecated: Function utf8_encode() is deprecated in /var/www/openaccess.click/meta_xml.php on line 47

Deprecated: Function utf8_encode() is deprecated in /var/www/openaccess.click/meta_xml.php on line 47

Deprecated: Function utf8_encode() is deprecated in /var/www/openaccess.click/meta_xml.php on line 47

Deprecated: Function utf8_encode() is deprecated in /var/www/openaccess.click/meta_xml.php on line 47

Deprecated: Function utf8_encode() is deprecated in /var/www/openaccess.click/meta_xml.php on line 47

Deprecated: Function utf8_encode() is deprecated in /var/www/openaccess.click/meta_xml.php on line 47
双酚a - Open Access .click
Results 1 to 10 of about 1,548 (87)

Risk Analysis and Management of Dietary Exposure to Bisphenol A from Food Contact Materials(食品接触材料中双酚A暴露风险及风险管理) [PDF]

open access: yesShipin kexue jishu xuebao, 2022
Bisphenol A (BPA) is widely used in food contact materials. Exposure to BPA may cause health problems. China is the biggest producing country of BPA, and there is no systematical exposure assessment of BPA and lack of database of food contact material ...
SHENG Jiping(生吉萍)   +2 more
doaj   +1 more source

The effect of a mixed cannabidiol and cannabidiolic acid based oil on client‐owned dogs with atopic dermatitis

open access: yesVeterinary Dermatology, Volume 33, Issue 4, Page 329-e77, August 2022., 2022
Background– Cannabidiol (CBD) and cannabidiolic acid (CBDA) are reported to have antinociceptive, immunomodulatory and anti‐inflammatory actions. Objectives – To determine if CBD/CBDA is an effective therapy for canine atopic dermatitis (cAD). Conclusions and clinical relevance – Cannabidiol/CBDA as an adjunct therapy decreased pruritus, and not skin ...
Melissa Loewinger   +4 more
wiley   +1 more source

Effects of Filling Nitrogen in Vacuum Combined with Heat Treatment on Browning of Fresh-Cut Agaricus bisporus Under Cold Storage(真空充氮热处理对鲜切双孢蘑菇贮藏中褐变的影响) [PDF]

open access: yesShipin kexue jishu xuebao, 2016
In order to delay the occurrence of browning of fresh-cut Agaricus bisporus under cold storage, effects of filling nitrogen in different vacuum (0, -20, -40, -60, -80, -98kPa) combined with heat treatment on color, enzyme activities of peroxidase ...
LI Shunfeng(李顺峰)   +4 more
doaj   +1 more source

3种天然抗氧化剂在双低菜籽油中的抗氧化效果Antioxidant effects of three natural antioxidants on double low rapeseed oil

open access: yesZhongguo youzhi, 2022
分别向双低菜籽油添加0.2 g/kg的维生素E、抗坏血酸棕榈酸酯及茶多酚棕榈酸酯,采用Schaal烘箱法进行13 d的贮藏试验,测定贮藏过程中酸值、碘值、硫代巴比妥酸值、过氧化值、茴香胺值的变化,研究3种天然抗氧化剂对双低菜籽油的抗氧化效果。结果表明:贮藏期间添加抗氧化剂组双低菜籽油酸值、硫代巴比妥酸值、茴香胺值及过氧化值均有不同程度的上升,但均较未添加抗氧化剂的低,且添加抗坏血酸棕榈酸酯组的4个指标上升速度低于添加茶多酚棕榈酸酯和维生素E组的,贮藏13 d时其过氧化值(0.23 g/100 g ...
魏红艳1,张玉斌1,石岩2 WEI Hongyan1, ZHANG Yubin1, SHI Yan2
doaj   +1 more source

二沉池出水中双酚A的高铁酸钾氧化降解行为

open access: yesGongye shui chuli, 2011
考察了pH、温度、反应时间、浓度、光照、腐殖酸、干扰离子等因素对高铁酸钾降解双酚A的影响,并探讨了高铁酸钾降解双酚A的动力学机理以及对二沉池出水中双酚A的降解作用。研究表明:在pH=9.0,室温条件下,反应10 min后双酚A的降解率达最大值;光照对双酚A降解基本没有影响;腐殖酸对双酚A的降解有一定促进作用;干扰离子对双酚A降解影响较为复杂,既有促进作用又有抑制作用。以二沉池出水为基体,当m(高铁酸钾)∶m(双酚A)=5∶1,双酚A初始质量浓度为5.0 mg/L时,反应4 min后,双酚A的降解率达99%
丁博, 尹平河, 赵玲, 王丹
doaj   +2 more sources

马铃薯过氧化物酶催化氧化快速降解双酚A

open access: yesGongye shui chuli, 2021
通过构建双水相萃取体系,从马铃薯淀粉加工废水中萃取过氧化物酶,再经透析、冻干得马铃薯过氧化物酶固体酶粉,用于催化H2O2快速降解双酚A(BPA)。结果表明,在室温,pH为6,200 U/mL马铃薯过氧化物酶催化1.0 mmol/L H2O2氧化初始浓度为0.8 mmol/L BPA的条件下,反应10 min后,BPA的降解率可达99%以上,对于修复水体具有极大的潜在应用价值。
王鑫鑫   +8 more
doaj   +2 more sources

糠醇基介孔碳对水中双酚A的吸附性能研究

open access: yesGongye shui chuli, 2017
采用3种多孔碳材料C-1、C-2和C-3对双酚A进行静态吸附实验,选用具有集中介孔分布、比表面积较大的C-3在不同温度和pH条件下对双酚A进行吸附。结果表明,当双酚A初始质量浓度为60 mg/L、温度为30℃时,C-3对双酚A的饱和吸附量达到279.4 mg/g。在相同条件、等电点附近,C-3对双酚A的去除率达到最大值47.4%,饱和吸附量达到284.5 mg/g。C-3对双酚A的吸附遵循拟二级动力学方程。
王琳, 赵军
doaj   +2 more sources

环境内分泌干扰物双酚A的吸附研究进展

open access: yesGongye shui chuli, 2018
双酚A是一种典型的环境内分泌干扰物,广泛存在于地表水、地下水及废水中,饮用水中也含有微量双酚A。其具有生物毒性和内分泌干扰作用,对生态环境安全和人类健康构成严重威胁。重点介绍了几种材料对双酚A的吸附效果和特性,通过化学改性可以明显提高吸附材料对双酚A的吸附效果,最后对环境水体中双酚A吸附研究的发展方向提出建议。
徐朋飞   +5 more
doaj   +2 more sources

Analysis of phenolic compounds in soil using ionic liquid aqueous solution as extractant coupled with ion chromatography(离子液体水溶液萃取-离子色谱测定土壤中酚类化合物)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2010
建立了离子液体(氯化1-辛基-3-甲基咪唑([Omim]Cl))水溶液萃取-离子色谱测定土壤中酚类化合物的方法.研究了离子液体水溶液的浓度,萃取时间,固液比等因素对萃取效率的影响;对比了离子液体与传统萃取溶剂的萃取效率;优化了离子色谱同时测定5种酚的最佳色谱条件.在最佳条件下,离子液体对2, 4-二甲基苯酚、对硝基苯酚、2-萘酚、2, 4-二硝基苯酚及双酚A 5种物质的萃取效率在75%以上;该方法具有较低的检出限(1.8~4.2 µg •L-1, S/N = 3).将该方法用于实际土壤样品的检测 ...
ZHUHai-bao(朱海豹)   +4 more
doaj   +1 more source

Study on the curing behavior of 2, 4, 6-tri (hydroxylphenylamine)-s-triazine and diglycidyl ether of bisphenol A(三羟基苯甲基氨基均三嗪与双酚A型环氧树脂的固化反应研究)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2008
采用等转化率法研究了2, 4, 6-三(羟基苯甲基氨基)-均三嗪(MFP)与双酚A型环氧树脂(DGEBA)在等温和非等温条件下的固化反应行为,两种条件下MFP/DGEBA固化反应的表观活化能(Eα)均随转化率(α)增加呈先减后增的趋势(α= 0.25时取得最小值).由于仲胺基和酚羟基对环氧基反应的不等活性,非等温固化反应时两种反应先后发生,形成Triazine-NCH2-CH(OH)-结构后,再形成ArO-CH2-CH(OH)-结构并产生交联,前后两阶段Eα分别为69.8、86.8 kJ • mol-1.
ZHANGXing-hong(张兴宏)   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy