Results 21 to 30 of about 5,548,462 (338)

Salicylic Acid and Jasmonic Acid Increase the Polysaccharide Production of Nostoc flagelliforme via the Regulation of the Intracellular NO Level

Foods, 2023
To significantly improve the polysaccharide production of Nostoc flagelliforme, a total of 12 chemicals were evaluated for their effects on polysaccharide accumulation.
Cheng-Feng Han, Shu-Ting Liu, Rong-Rong Yan, Jian Li, Ni Chen, Le-Le Zhang, Shi-Ru Jia, Pei-Pei Han   +7 more
doaj   +1 more source

Oxidation Mechanism of Oxalic Acid on Platinum, Glassy Carbon and Boron Doped Diamond Electrodes in Nitric Acid Medium

He huaxue yu fangshe huaxue, 2023
In order to understand the electrochemical oxidation mechanism of oxalic acid on platinum, glassy carbon and boron doped diamond(BDD) electrodes in nitric acid medium, cyclic voltammetry and linear sweep voltammetry were used to carry out electrochemical
QIAO Lu, ZHANG Hu
doaj   +1 more source

Comparison of the Three-Phase Corrosion Behavior of SiN and 304L Stainless Steels in 6 M Nitric Acid Solution at Different Temperatures

Metals, 2022
In this work, the three-phase corrosion behavior of SiN and 304L stainless steels was comparatively investigated in a 6 M nitric acid solution at different temperatures.
Shengxuan Sun, Lianmin Zhang, Aili Ma, Enobong Felix Daniel, Chunzhi Zhang, Yugui Zheng   +5 more
doaj   +1 more source

Sequential recovery of metals from waste printed circuit boards using a zero-discharge hydrometallurgical process

Cleaner Engineering and Technology, 2021
Several hydrometallurgical routes have been proposed in the literature to treat printed circuit boards (PCBs) from waste electronic equipment. These employ different chemical reagents for the recovery and separation of metals as metals or their salts ...
Vamsi Vikram Gande, Shilpa Vats, Nirav Bhatt, S. Pushpavanam   +3 more
doaj   +1 more source

Determination of rare earth elements, uranium and thorium in soil samples by microwave-assisted acid digestion and inductively coupled plasma mass spectrometry [PDF]

Songklanakarin Journal of Science and Technology (SJST), 2021
This paper presents a simple microwave digestion method for soil samples leading to correct determination of the rare earth elements (Ce, La, Nd, Sc), uranium (U) and thorium (Th) using inductively coupled plasma mass spectrometry (ICP-MS).
Sasikarn Nuchdang, Ratchai Fungklin, Wilasinee Kingkam, Dussadee Rattanaphra   +3 more
doaj   +1 more source

Electrochemical Behavior of ReO-4 in Sulfuric Acid and Nitric Acid Media

He huaxue yu fangshe huaxue, 2022
99Tc is one of the main fission products in nuclear spent fuel in power reactor. Its half-life period is 2.13×105 years, which has long-term harm to the ecological environment, and it gets special attention in PUREX process.
DENG Yi-lin, ZHANG Hu
doaj   +1 more source

Rapid growth of new atmospheric particles by nitric acid and ammonia condensation

Nature, 2020
A list of authors and their affiliations appears at the end of the paper New-particle formation is a major contributor to urban smog 1 , 2 , but how it occurs in cities is often puzzling 3 .
Mingyi Wang, Weimeng Kong, R. Marten, Xucheng He, Dexian Chen, Joschka Pfeifer, Arto Heitto, J. Kontkanen, L. Dada, A. Kürten, T. Yli-Juuti, H. Manninen, Stavros Amanatidis, A. Amorim, Rima Baalbaki, A. Baccarini, D. Bell, B. Bertozzi, Steffen Bräkling, S. Brilke, Lucía Caudillo Murillo, R. Chiu, Biwu Chu, L. De Menezes, J. Duplissy, Henning Finkenzeller, L. Carracedo, Manuel Granzin, R. Guida, A. Hansel, V. Hofbauer, J. Krechmer, K. Lehtipalo, Houssni Lamkaddam, M. Lampimäki, C. P. Lee, V. Makhmutov, Guillaume Marie, S. Mathot, R. Mauldin, B. Mentler, Tatjana Müller, A. Onnela, Eva Partoll, T. Petäjä, M. Philippov, V. Pospisilova, A. Ranjithkumar, M. Rissanen, B. Rörup, W. Scholz, Jiali Shen, M. Simon, M. Sipilä, G. Steiner, D. Stolzenburg, Y. J. Tham, A. Tomé, A. Wagner, Dongyu S. Wang, Yonghong Wang, Stefan K. Weber, P. Winkler, P. J. Wlasits, Yusheng Wu, M. Xiao, Q. Ye, Marcel Zauner-Wieczorek, Xueqin Zhou, R. Volkamer, I. Riipinen, J. Dommen, J. Curtius, U. Baltensperger, M. Kulmala, D. Worsnop, J. Kirkby, J. Seinfeld, I. El-Haddad, R. Flagan, N. Donahue   +80 more
semanticscholar   +1 more source

Separation of palladium and silver from E-waste leachate: effect of nitric acid concentration on adsorption to Thiol scavenger

Chemical Engineering Journal Advances, 2022
The development of recovery techniques for metals present in low concentrations in E-waste, such as silver and palladium, is important from the aspect of the circular economy.
Joona Rajahalme, Siiri Perämäki, Ari Väisänen   +2 more
doaj   +1 more source

Nitric Acid

Kirk‐Othmer Encyclopedia of Chemical Technology, 2020
The pure compound is colorless, but older samples tend to acquire a yellow cast due to decomposition into oxides of nitrogen and water. Most commercially available nitric acid has a concentration of 68% in water.
Michael C.E Groves
semanticscholar   +1 more source

The utilization demineralized rice husk waste for biofuel source via pyrolysis: thermogravimetric analysis and kinetic study [PDF]

MATEC Web of Conferences, 2019
Rice husk is considered as agricultural waste that causes environmental problem during its handling. In this study, rice husk was treated with acid (citric acid and nitric acid) solutions prior used as raw material for producing biofuel and chemicals via
Wijayanti Hesti, Nata Iryanti Fatyasari, Jelita Rinny   +2 more
doaj   +1 more source