Results 71 to 80 of about 22,161 (255)

Correlation between caffeine contents of green coffee beans and altitudes of the coffee plants grown in southwest Ethiopia

Bulletin of the Chemical Society of Ethiopia, 2018
Caffeine contents of 45 green coffee bean samples collected from coffee plants grown at different altitudes in Southwest Ethiopia was determined by UV-Vis spectrophotometry. The caffeine contents were found in the range of 0.62 - 1.2% (w/w).
M. Hagos, M. Redi-Abshiro, B. S. Chandravanshi, E. Ele, A. M. Mohammed, H. Mamo   +5 more
doaj   +1 more source

UV/vis Spectrophotometry/Channel Flow Electrode to Determine Anodic Dissolution of Metal

Analytical Sciences, 2000
UV/vis spectrophotometry/channel flow electrode was developed in order to determine the dissolution rate of metallic ions from the corroded metal electrode. In the present method, the relation between absorbance As and the flux of dissolved ions ψ is expressed by the following equation: As = eκψVm-2/3, where e is molar absorptivity, κ a constant, and ...
ITAGAKI, Masayuki, HORI, Fumihiro, WATANABE, Kunihiro   +2 more
openaire   +2 more sources

Oral Prebiotic Polysaccharide Hydrogels Sustaining Colon Antibody Release Alleviate Inflammatory Bowel Disease

Advanced Science, EarlyView.
An orally administered prebiotic polysaccharide hydrogel (predaGel) based on inulin and alginate‐dopamine is stable in the stomach, adheres to the intestine, and degrades slowly in the colon. It enables site‐specific delivery of anti‐TNF‐α and anti‐IL‐12/23 antibodies, scavenges reactive oxygen species, and remodels gut microbiota, offering effective ...
Xinyi Dong, Huan He, Li Cao, Fenghua Meng, Zhiyuan Zhong   +4 more
wiley   +1 more source

Microenvironment‐Responsive Nanomedicine Enables Vertical Modulation of Mitochondrial Pathological Networks in Myocardial Ischemia–Reperfusion Injury

Advanced Science, EarlyView.
A mitochondria‐targeted, microenvironment‐responsive nanoplatform enables pH/ROS‐triggered co‐delivery of berberine and isoliensinine to orchestrate ROS scavenging, inflammation suppression, and apoptosis inhibition. This vertical modulation of mitochondrial pathological networks preserves mitochondrial function and effectively mitigates myocardial ...
Jue Wang, Jia Zhou, Wenqin Yuan, Tianjiao Zhao, Yunying Huang, Yingci Xia, Yuting Lin, Fei Li, Qiong Huang, Chong Liu, Kelong Ai, Qun Qin   +11 more
wiley   +1 more source

Adaptive Cu Reconstruction in Heterostructure Drives High‐Rate Nitrate‐to‐Ammonia Conversion

Advanced Science, EarlyView.
An adaptively reconstructed Cu/CoOX heterojunction, featuring a surface‐localized, hydroxyl‐rich oxidized Cu species, forms in situ from a CuO/CoOX (Co1Cu9OX) pre‐catalyst during electrochemical nitrate reduction. The self‐adaptive reconstruction and the incorporation of heterostructure regulate nitrogen‐containing intermediate adsorption and *H supply,
Chunyu Yuan, Saikat Bolar, Yongzheng Zhang, Akitaka Ito, Tatsuhiko Ohto, Takeshi Fujita   +5 more
wiley   +1 more source

Determination of Acid Dissociation Constants of Some 2-(3H) –Benzoxazolone Derivatives by UV–Vis Spectrophotometry [PDF]

Iranian Journal of Chemistry & Chemical Engineering
The acid dissociation constant values of some 2-(3H)-benzoxazolone derivatives were determined in buffered solutions by using the UV-Vis spectrophotometric method.
Semra Altunterim Erkan, Hayati Celik, Banu Kesanlı   +2 more
doaj   +1 more source

Review on application of spectrophotometry UV-Vis for identifying BKO in Jamu

BIS Health and Environmental Science
WHO reports that herbal medicines are used by more than 75% of the world's population, especially in developing countries, in an effort to maintain health. Jamu is an Indonesian cultural heritage made from herbal ingredients which has a great opportunity to become an export commodity.
Siska Rusmalina, Bekti Nugraheni, Siti Zamrotun, Lulu Cintya Jaya, Jacinda Caroline Nathania, Anggi Dela Oktavian   +5 more
openaire   +1 more source

Neuropeptide Y—Graphene Oxide Complexes Inhibit Amygdala NPY‐Receptor Expressing Glutamatergic Pathways and Selectively Remove Aversive Memory In Vivo

Advanced Science, EarlyView.
A graphene oxide nanocarrier presents neuropeptide Y specifically to NPY receptor‐expressing pathways in the amygdala, whose activation selectively suppresses aversive memory formation, without modulating anxiety responses. This circuit‐restricted drug release strategy may impact future design of neuropsychiatric therapies with limited off‐target ...
Elisa Pati, Audrey Franceschi Biagioni, Raffaele Casani, Luis M. Arellano, Tommaso Battisti, Gloria Garcia‐Ortega, Neus Lozano, Alberto Bianco, Kostas Kostarelos, Laura Ballerini, Giada Cellot   +10 more
wiley   +1 more source

Rewiring Pyroptosis to Potentiate Cancer Immunotherapy via a Gasdermin D Agonist Bypassing Caspase‐3

Advanced Science, EarlyView.
This work introduces a small‐molecule agonist, DIBDO, that bypasses Casp‐3 to directly trigger GSDMD‐mediated pyroptosis in tumors. Activated by glutathione, DIBDO generates singlet oxygen and molecular iodine, blocking Casp‐3 pathways and inducing immunogenic cell death.
Dan Zhao, Lingling Zhang, Yue Wen, Lianghui Cheng, Sidan Tian, Fanling Meng, Liang Luo   +6 more
wiley   +1 more source

Penentuan Kadar Flavonoid Daun Sembung (Blumea balsamifer) menggunakan Metode Spektrofotometri UV-Vis

Indonesian Journal of Pharmaceutical Education
Indonesian people use herbal medicines for the prevention and treatment of disease Data collected in 2010 show that the use of herbal medicine in Indonesia reaches 59.12%.
Mohamad Adam Mustapa, Muhammad Taupik, A. Mu'thi Andy Suryadi, Andi Makkulawu, Mohamad Aprianto Paneo   +4 more
doaj   +1 more source