Results 51 to 60 of about 15,360 (259)

Comparison of the Determination of Magnesium by Methylthymol Blue Spectrophotometry and Atomic Absorption Spectrophotometry [PDF]

cclm, 1994
Plasma samples (n = 155) of 30 patients on an intensive ward were analysed for magnesium simultaneously by atomic absorption spectrophotometry (AAS) and methylthymol blue spectrophotometry. Methylthymol blue spectrophotometry was performed at the bedside, using two different multianalysers, Easy ST 1 and Easy ST 2, Merck, D-Darmstadt.
Saur, Petra M. M., Zielmann, S., Roth, Andrea, Frank, L., Warneke, G., Ensink, F.-B. M., Radke, A.   +6 more
openaire   +3 more sources

A Sprayable Nanoplatform Breaks the Vicious Cycle of Diabetic Wounds via Photoactivated Antioxidant and Drug Delivery

Advanced Science, EarlyView.
A sprayable near‐infrared‐activated nanoplatform incorporating MXene, ZnHCF nanozyme, and deferoxamine efficiently breaks the vicious cycle of diabetic wounds. Upon irradiation, interfacial electron transfer and photothermal effects enhance multi‐enzyme activity, enabling explosive ROS elimination, alleviation of hypoxia, and controlled DFO release ...
Jiahao Guo, Yuanyuan Meng, Qixiang Gui, Xi‐Tao Yang, Yong Fan, Xiaodong Zhu   +5 more
wiley   +1 more source

The anti-corrosion behaviour of Satureja montana L. extract on iron in NaCl solution

Open Chemistry, 2019
The effect of Satureja montana L. extract (SM) and phenolic fraction of Satureja montana L. (PF) on the corrosion behaviour of iron in 0.1 mol L-1 sodium chloride solution was studied by electrochemical techniques, UV/Vis spectrophotometry and atomic ...
Pilić Zora, Dragičević Ivan, Martinović Ivana   +2 more
doaj   +1 more source

Multi‐Stimuli‐Responsive Hydrogen‐Bonded Organic Frameworks Nanocarriers Enable Targeted Fungicide Release and Plant Immune Regulation

Advanced Science, EarlyView.
A fluorinated hydrogen‐bonded organic framework nanocarrier (PFC‐1‐F) loaded with PYR and coated with HACC enables multi‐stimuli‐responsive (enzyme/ROS/pH) release at infection sites. Exhibiting targeted antifungal activity against Sclerotium rolfsii, modulating plant antioxidant defense, and demonstrating favorable biosafety across plant, soil, and ...
Guangming Ma, Ying Zou, Yao Wang, Huiyan Li, Jinlin Li, Tianfu Liu, Xiaohong Pan   +6 more
wiley   +1 more source

DETERMINATION OF CALCIUM (Ca) AND MAGNESIUM (Mg) CONTENT IN CACAO (Theobroma cacao Linn) FERMENTATION AND NON FERMENTATION BY SPECTROPHOTOMETRY

Jurnal Riset Kimia, 2015
Cacao beans contain many kinds of mineral, magnesium (Mg), calcium (Ca), Zinc (Zn), Phosphor (P) and etc. This study investigated magnesium (Mg) and calcium (Ca) in fermentation and non fermentation cacao beans by atomic absorption spectrophotometry.
Wiranda -, Sumaryati Syukur, Hermansyah Aziz   +2 more
doaj   +1 more source

Intrinsically Mitochondria‐Targeting Nanozyme via Coordination‐Assembly of Natural Quercetin for Cascade Antioxidant Therapy of Cerebral Ischemia‐Reperfusion Injury

Advanced Science, EarlyView.
This study uncovers that quercetin naturally targets mitochondria. By coordinating quercetin with Fe3+, we engineer an ultrasmall cascade nanozyme (MCN) with superoxide dismutase‐catalase activities. MCN crosses the damaged blood–brain barrier, scavenges mitochondrial ROS, prevents mitochondrial DNA leakage, and blocks the cGAS‐STING pathway, thereby ...
Wenxuan Zheng, Zhicheng Wang, Xin Zhou, Shuya Wang, Xiaojing Shi, Tingli Xiong, Ruishi Li, Yuting Lin, Zhen Chen, Jiawen Wei, Fei Li, Jinwen Ge, Kelong Ai, Chong Liu, Guiming Deng   +14 more
wiley   +1 more source

Nanomaterials for Allergy Diagnosis and Treatment: Advances, Opportunities and Translational Challenges

Advanced Science, EarlyView.
Nanomaterials offer dual applications in allergy management. For diagnosis, nanomaterials enhance analytical sensitivity and improve detection in specific IgE and functional assays such as the basophil activation test (BAT). For allergen‐specific immunotherapy, nanomaterials enable allergen masking and controlled release, and effectively modulate the ...
Madiha Habib, Shan Jiang, Joyce ZX Lee, CW Lim, HL Yeung, Nicki YH Leung, Patrick SC Leung, Ting F Leung, Christine YY Wai   +8 more
wiley   +1 more source

Multi‐Component Functionalized Bifidobacterium Longum Hydrogel for Multi‐Target Integrated Therapy of Colitis‐Associated Anxiety and Depression

Advanced Science, EarlyView.
A pH/MMP dual‐responsive Bifidobacterium longum (BL) hydrogel (INPs@BL@Gel) functionalized with baicalin, tyrosine, and inulin is constructed. It enables gastric protection, inflammation‐targeted release, and prolonged intestinal colonization. By remodeling gut microbiota, elevating beneficial neuroactive metabolites (homovanillic acid, short‐chain ...
Shuo Zhang, Yujie Zhang, Jiansheng He, Shunlian Li, Qingyan Ma, Qiao Li, Yudan Zhang, Yiyang Wang, Shaobo Ma, Songyan Jin, Chune Li, Xueyong Xie, Hang Zhang, Junze Deng, Xueqin Song, Daocheng Wu, Xiancang Ma, Feng Zhu   +17 more
wiley   +1 more source

A Pathology‐Instructed Theranostic Platform with Mechanoadaptive and ROS‐Powered Nanobreathing Functions for Precision Myocardial Repair

Advanced Science, EarlyView.
We developed a pH responsive theranostic serum albumin hydrogel named BST, functionalized with MRI and CT probes and loaded with mitochondria targeted CAT‐SOD nanogels, that rapidly self repairs and mechanically stabilizes the infarcted myocardium, releases therapeutic nanogels and albumin under hypoxia induced acidosis to clear mitochondrial ROS ...
Zheng Luo, Cui Yang, Liuzhou Mao, Panqin Ma, Chiyu Jia, Karen Yuanting Tang, Xian Jun Loh, Yun‐Long Wu   +7 more
wiley   +1 more source

Studies on Atomic-absorption Spectrophotometry. II. Determination of Magnesium in Cast Iron by Atomic-absorption Spectrophotometry

The Journal of the Society of Chemical Industry, Japan, 1963
原子吸収分光光度法による鋳鉄中のマグネシウムの定量について鉄を除去した場合に必要な基礎的研究を行ない定量方法を確立した。マグネシウムを定量する場合,アルミニウムおよびケイ素は影響を与えるが,カルシウムの添加によってその影響は消失した。チタンは全く影響を示さなかった。クロムは3価として存在すれば影響しなかった。重クロム酸として存在するとマグネシウムの吸光度は増大するが,その割合はクロム量が増加しても一定であった。リンは空気-アセチレン炎では影響はあらわれなかったが,空気-プロパン炎の場合にはあらわれた。鋳鉄中のマグネシウムは試料溶液からメチルイソブチルケトン抽出で鉄を除去し,原子吸収分光光度法で定量する。この方法は操作が簡易迅速で結果も良好であった。
Masami Suzuki, Tsugio Takeuchi
openaire   +2 more sources