Results 21 to 30 of about 302,061 (259)

Sample Treatment Methods for Determination of Rare Earth Elements in Manganese Ore by High-pressure Closed Digestion-Inductively Coupled Plasma-Mass Spectrometry

Yankuang ceshi, 2018
BACKGROUND With advantages of small sample quantity, less acid, and low blank, high-pressure closed digestion-Inductively Coupled Plasma-Mass Spectrometry became the main method in the determination of rare earth elements.
WU Lei, LIU Yi-bo, WANG Jia-song, WU Liang-ying, ZHANG Nan, WANG Na   +5 more
doaj   +1 more source

Response of soil chemical properties and enzyme activity of four species in the Three Gorges Reservoir area to simulated acid rain

Ecotoxicology and Environmental Safety, 2021
The chemical composition in the precipitation is constantly changing, thus acid rain type is gradually changing from sulfuric type to mixed type and then nitric type.
Xinli Li, Yunqi Wang, Ying Zhang, Yujie Wang, Chengmin Pei   +4 more
doaj   +1 more source

Synthesis of Magnesium Hydroxide via Nitric Acid Processing of Dolomite

Proceedings of the International Conference on Applied Innovations in IT
The aim of the study is to obtain magnesium hydroxide by complex, nitric acid processing of dolomite from the Dekhkanabad deposit. The results of the influence of technological parameters on the degree of decomposition of dolomite with 40, 50 and 57 ...
Kholtura Mirzakulov, Gavkhar Melikulova, Ruslan Yorbobaev, Khusan Zikirov   +3 more
doaj   +1 more source

COMPARATIVE STUDY BETWEEN PECTROPHOTOMETRIC AND HPLC METHODS USED FOR IODINE EXTRACTION IN MILK AND SOME DAIRY PRODUCTS [PDF]

Journal of Food and Dairy Sciences, 2012
Determination of iodine in milk and its products is very important from the  nutritional view point. Simple and rapid extraction methods were evaluated and validated  for determining iodine in milk and some dairy products by Spectrophotometric  method ...
Karima Abo El Enien, Magda Abd El Aziz
doaj   +1 more source

Amount and Composition of NOx Generated by Metal (Cu, Ni, and Fe) Dissolution Reaction with Nitric Acid

Journal of Chemical Engineering of Japan
In metal dissolution processes, the amount and composition of NOx generated by a reaction using nitric acid vary with complex factors. To treat harmful NOx generated by metal dissolution with nitric acid, the amount and composition of generated NOx was ...
Haruumi Takeda, Erika Okita, Takafumi Horie, Makoto Asano, Masahiro Yasuda   +4 more
doaj   +1 more source

The preparation of Li2TiO3 powder via solution combustion synthesis for using in fusion reactor as tritium breeder [PDF]

مجله علوم و فنون هسته‌ای, 2020
Li2TiO3 as a tritium breeder has a significant role in nuclear fusion reactors. The aim of this study was the synthesis of Li2TiO3 powder by solution combustion in the explosive mode as an inexpensive and efficient method.
H. Kaspoor, A.R. Abbasian, M. Shafiee Afarani   +2 more
doaj   +1 more source

Synthesis of Butyric Acid Nitrification Derivatives and Adiabatic Thermal Analysis of Reaction With Nitric Acid

He huaxue yu fangshe huaxue
Tributyl phosphate(TBP) undergoes stepwise degradation in the post-treatment system to produce butanol, which is ultimately converted into butyric acid. Butyric acid can gradually accumulate in the system and undergo nitration reactions triggered by free
Shi-ming FENG, Qian-hong GAO, Xiao-long ZHONG, Shuang-ling TANG   +3 more
doaj   +1 more source

Microbiome‐blood–brain barrier interactions in aging — mechanisms and therapeutic potential

FEBS Letters, EarlyView.
Aging reshapes the gut microbiome (↓SCFA‐producing commensals; ↑pro‐inflammatory outputs), shifting circulating metabolites (↓SCFAs; ↑LPS, ↑TMAO, ↑PAA) that act at the BBB to increase nonspecific transcytosis, alter transport, and promote astrocyte reactivity, heightening brain vulnerability.
Daniel Cuervo‐Zanatta, Hari Baskar Balasubramanian, Amir Pasokh, Marietta Zille   +3 more
wiley   +1 more source

EFFECTS OF KAINIC ACID ON GLUTATIONE AND NITRITE IN RAT HIPPOCAMPUS [PDF]

Journal of IMAB, 2011
Epileptiformic activity could result in apoptotic neuronal death, in which oxidative stress could play an important role. In case of decreased antioxidant brain status cellular death could be facilitated.
Nadka I. Boyadjieva, Pavlina Andreeva-Gateva   +1 more
doaj   +1 more source

Colloid-chemical properties of surfactant–nitric acid–water systems

Chimica Techno Acta, 2023
The behavior of the surfactants Tween 80, SaS and alkyl betaine in aqueous and nitric acid environments as promising additives for nitrate leaching of hard-to-process ore concentrates of non-ferrous metals was studied.
Lev Danilin, Tatyana Lugovitskaya, Elvira Kolmachikhina, Denis Rogozhnikov   +3 more
doaj   +1 more source