Results 31 to 40 of about 667,427 (198)

Curcumin Electrochemistry—Antioxidant Activity Assessment, Voltammetric Behavior and Quantitative Determination, Applications as Electrode Modifier

Antioxidants, 2023
Curcumin (CU) is a polyphenolic compound extracted from turmeric, a well-known dietary spice. Since it has been shown that CU exerts beneficial effects on human health, interest has increased in its use but also in its analysis in different matrices.
Iulia Gabriela David, Emilia Elena Iorgulescu, Dana Elena Popa, Mihaela Buleandra, Mihaela Carmen Cheregi, Hassan Noor   +5 more
doaj   +1 more source

Present status of volatile ruthenium in analytical chemistry and health physics.

Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan, 1986
核分裂によって生じる放射性白金族元素の中で生成量の最も多いRuは多くの原子価をとり,化学的性質が複雑なばかりでなく,8価の酸化物まで作って揮発するため,関連する研究や産業上の難問になっていた。近年はRuの複雑な化学的性質を触媒等に利用しようとする基礎研究が盛んであるが,原子力分野でも燃料再処理のダウンストリームを中心に,この困難克服のための研究が活発に行われるようになっている。本稿では,放射性Ruの研究の展望と揮発性Ruの基本的性質を基礎にして,近年の分離分析への応用環境試料分析における揮散,生体での挙動と被曝線量評価の問題点について述べる。
Kazuo WATARI, Kiyoko IMAI, Yoshikazu NISHIMURA, Yoshio KODA   +3 more
openaire   +2 more sources

Els Fonaments canviants de la química analítica [PDF]

, 1985
The features of the physico-chemical background of analytical chemistry, as it was viewed during the first half of this century, is first described. The impact of the massive introduction of instrumentation and separation techniques is discussed, and the
Casassas i Simó, Enric
core  

Dual-barrel conductance micropipet as a new approach to the study of ionic crystal dissolution kinetics [PDF]

, 2013
A new approach to the study of ionic crystal dissolution kinetics is described, based on the use of a dual-barrel theta conductance micropipet. The solution in the pipet is undersaturated with respect to the crystal of interest, and when the meniscus at ...
Alex W. Colburn, Bode A. A. C., Bode A. A. C., Burgess J., Charola E., Chen C.-C., Chen C.-C., De Yoreo J. J., Dejmek M., Dove P. M., Ebejer N., Etienne M., Gasperino D., Guo S., Hamza S. M., Hansma P., Harstad A. O., Hu J., Jones C. E., Jung T., Kim McKelvey, Lai S. C. S., Langer M. R., Laslau C., Lehto P., Lide R., Lipasek R. A., Macpherson J. V., Macpherson J. V., Massimo Peruffo, Mbogoro M. M., McGeouch C.-A., McKelvey K., Michael E. Snowden, Nadappuram B. P., Newman J. S., Orton R., Pastero L., Patrick R. Unwin, Peltonen L., Rheinlaender J., Rheinlaender J., Rodolfa K. T., Shen M., Simon B., Sjoeberg E. L., Snowden M. E., Sophie L. Kinnear, Stephens C. J., Sánchez D., Takahashi Y., Taylor G., Tomson M. B., Unwin P. R., Vippagunta S. R., Wagner C., Wang S.-S., Wen H., Wu C., Zhan D., Zhang L.   +60 more
core   +1 more source

Surface properties determination as surface tension, energy and heat capacity of corn oil [PDF]

BIO Web of Conferences
Corn oil is widely used in foods, especially for a variety of diets. This work presents the determination of some physicochemical parameters of the oil: density, surface tension, surface energy, and surface heat capacity.
Ivanova Ivelina, Petrova Ivalina, Gandova Vanya   +2 more
doaj   +1 more source

Graphene Oxides Derivatives Prepared by an Electrochemical Approach: Correlation between Structure and Properties

Nanomaterials, 2020
Graphene oxide (GO) can be defined as a single monolayer of graphite with oxygen-containing functionalities such as epoxides, alcohols, and carboxylic acids.
Carlos Sainz-Urruela, Soledad Vera-López, María Paz San Andrés, Ana M. Díez-Pascual   +3 more
doaj   +1 more source

Strategies for Surface Design in Surface Plasmon Resonance (SPR) Sensing

Biosensors, 2023
Surface plasmon resonance (SPR) comprises several surface-sensitive techniques that enable the trace and ultra-trace detection of various analytes through affinity pairing.
Cristina-Virginia Topor, Mihaela Puiu, Camelia Bala   +2 more
doaj   +1 more source

Investigation of copigment couple between Aronia anthocianins and ascorbic acid in temperature range [PDF]

BIO Web of Conferences
In this study, the interaction between Aronia as pigment and ascorbic acid copigment is presented. The process is observed at different concentrations and at different temperatures.
Petrova Ivalina, Ivanova Ivelina, Gandova Vanya   +2 more
doaj   +1 more source

Covalent Inhibition of the Human 20S Proteasome with Homobelactosin C Inquired by QM/MM Studies

Pharmaceuticals, 2022
20S proteasome is a main player in the protein degradation pathway in the cytosol, thus intervening in multiple pivotal cellular processes. Over the years the proteasome has emerged as a crucial target for the treatment of many diseases such as ...
Natalia Serrano-Aparicio, Silvia Ferrer, Katarzyna Świderek   +2 more
doaj   +1 more source

Biomarkers in Ovarian Cancer: Towards Personalized Medicine

Proteomes
Ovarian cancer is one of the deadliest cancers in women. The lack of specific symptoms, especially at the initial stages of disease development, together with the malignancy heterogeneity, lower the life expectancy of patients. Aiming to improve survival
Carlos López-Portugués, María Montes-Bayón, Paula Díez   +2 more
doaj   +1 more source