Results 41 to 50 of about 5,409,070 (357)

Ion-induced sulfuric acid–ammonia nucleation drives particle formation in coastal Antarctica

Science Advances, 2018
Antarctica is producing atmospheric aerosol of its own from trace gases emitted by the coastal flora and fauna. Formation of new aerosol particles from trace gases is a major source of cloud condensation nuclei (CCN) in the global atmosphere, with ...
T. Jokinen, M. Sipilä, J. Kontkanen, V. Vakkari, P. Tisler, Ella-Maria Duplissy, H. Junninen, H. Junninen, J. Kangasluoma, H. Manninen, H. Manninen, T. Petäjä, M. Kulmala, D. Worsnop, J. Kirkby, J. Kirkby, A. Virkkula, A. Virkkula, V. Kerminen   +18 more
semanticscholar   +1 more source

Effects of different sulfuric acid etching concentrations on PEEK surface bonding to resin composite.

Dental materials journal, 2018
This study evaluated the effects of surface pretreatment with different concentrations of sulfuric acid etching on surface properties and bonding between Polyetheretherketone (PEEK) and a resin composite.
P. Chaijareenont, Sasiprapha Prakhamsai, Patcharawan Silthampitag, Hidekazu Takahashi, M. Arksornnukit   +4 more
semanticscholar   +1 more source

The transformations of cellulose after concentrated sulfuric acid treatment and its impact on the enzymatic saccharification

Biotechnology for Biofuels and Bioproducts, 2023
Background The dense structure of cellulose lowers its reactivity and hinders its applications. Concentrated sulfuric acid is an ideal solvent to dissolve cellulose and thus has been used widely to treat cellulose. However, the changes of cellulose after
Shengbo Wu, Suan Shi, Ruotong Liu, Chun Wang, Jing Li, Lujia Han   +5 more
doaj   +1 more source

Scandium extraction from silicates by hydrometallurgical process at normal pressure and temperature

Journal of Materials Research and Technology, 2020
Silicate is an important rock-forming mineral. In this work, a method called “sulfuric acid curing” was proposed, aiming to extract rare earth element scandium from silicates.
Yanjun Zhang, Hongbo Zhao, Menglin Sun, Yisheng Zhang, Xiaoyu Meng, Luyan Zhang, Xin Lv, Sarangerel Davaasambuu, Guanzhou Qiu   +8 more
doaj   +1 more source

Enhanced growth rate of atmospheric particles from sulfuric acid [PDF]

Atmospheric Chemistry and Physics, 2020
In the present-day atmosphere, sulfuric acid is the most important vapour for aerosol particle formation and initial growth. However, the growth rates of nanoparticles (<10 nm) from sulfuric acid remain poorly measured. Therefore, the effect of
D. Stolzenburg, D. Stolzenburg, M. Simon, A. Ranjithkumar, A. Kürten, K. Lehtipalo, K. Lehtipalo, H. Gordon, S. Ehrhart, H. Finkenzeller, L. Pichelstorfer, T. Nieminen, X.-C. He, S. Brilke, M. Xiao, A. Amorim, R. Baalbaki, A. Baccarini, L. Beck, S. Bräkling, L. Caudillo Murillo, D. Chen, B. Chu, L. Dada, A. Dias, J. Dommen, J. Duplissy, I. El Haddad, L. Fischer, L. Gonzalez Carracedo, M. Heinritzi, C. Kim, C. Kim, T. K. Koenig, W. Kong, H. Lamkaddam, C. P. Lee, M. Leiminger, M. Leiminger, Z. Li, V. Makhmutov, H. E. Manninen, G. Marie, R. Marten, T. Müller, W. Nie, E. Partoll, T. Petäjä, J. Pfeifer, M. Philippov, M. P. Rissanen, M. P. Rissanen, B. Rörup, S. Schobesberger, S. Schuchmann, J. Shen, M. Sipilä, G. Steiner, Y. Stozhkov, C. Tauber, Y. J. Tham, A. Tomé, M. Vazquez-Pufleau, A. C. Wagner, A. C. Wagner, M. Wang, Y. Wang, S. K. Weber, D. Wimmer, D. Wimmer, P. J. Wlasits, Y. Wu, Q. Ye, M. Zauner-Wieczorek, U. Baltensperger, K. S. Carslaw, J. Curtius, N. M. Donahue, R. C. Flagan, A. Hansel, A. Hansel, M. Kulmala, J. Lelieveld, R. Volkamer, J. Kirkby, J. Kirkby, P. M. Winkler   +86 more
doaj   +1 more source

Investigation on the Sulfuric Acid Corrosion Mechanism for Concrete in Soaking Environment

Advances in Materials Science and Engineering, 2018
This paper chooses the apparent diffusion coefficient for OH− (hydroxyl ion) for concrete as an index to evaluate the corrosion degree of concrete subjected to sulfuric acid.
Hongguang Min, Zhigang Song
doaj   +1 more source

Experimental and Kinetic Modeling Studies on the Conversion of Sucrose to Levulinic Acid and 5-Hydroxymethylfurfural Using Sulfuric Acid in Water

Industrial & Engineering Chemistry Research, 2017
We here report experimental and kinetic modeling studies on the conversion of sucrose to levulinic acid (LA) and 5-hydroxymethylfurfural (HMF) in water using sulfuric acid as the catalyst. Both compounds are versatile building blocks for the synthesis of
J. N. M. Tan-Soetedjo, H. H. van de Bovenkamp, R. M. Abdilla, C. B. Rasrendra, J. van Ginkel, H. J. Heeres   +5 more
semanticscholar   +1 more source

Highly efficient removal of sulfuric acid aerosol by a combined wet electrostatic precipitator

, 2018
Eliminating sulfuric acid aerosol from flue gas is of vital importance to improve air quality. In this paper, a wet electrostatic precipitator (WESP) assisted with novel pre-charger was proposed to efficiently remove sulfuric acid aerosol.
Zhengda Yang, Cheng-hang Zheng, Xuefeng Zhang, Qianyun Chang, Wei-guo Weng, Yi Wang, Xiang Gao   +6 more
semanticscholar   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

Deprotection of Acetals and Ketals by Silica Sulfuric Acid and Wet SiO2

Molecules, 2002
Neat chlorosulfonic acid reacts with silica gel to give silica sulfuric acid in which sulfuric acid is immobilized on the surface of silica gel via covalent bonds.
Abdolhamid Bamoniri, Mohamad Ali Zolfigol, BiBi Fathemeh Mirjalili   +2 more
doaj   +1 more source