Results 41 to 50 of about 5,497,447 (382)

Ternary nucleation of H_2SO_4, NH_3 and H_2O [PDF]

, 2000
A classical theory of the ternary homogeneous nucleation of sulfuric acid—ammonia—water is presented. For NH3 mixing ratios exceeding 1 ppt, the presence of ammonia enhances the binary (sulfuric acid—water) nucleation rate by several orders of magnitude.
Korhonen, P., Kulmala, M., Laaksonen, A., McGraw, R., Seinfeld, J. H., Viisanen, Y.   +5 more
core  

Mycobacterium tuberculosis sulfurtransferase SseA is activated by its neighboring gene product Rv3284

FEBS Letters, EarlyView.
Tuberculosis remains a global health challenge and new therapeutic targets are required. Here, we characterized SseA, a sulfurtransferase from Mycobacterium tuberculosis involved in macrophage infection, and its interaction with the newly identified protein SufEMtb that activates SseA enzymatic activity.
Giulia Di Napoli, Alex Fissore, Edoardo Salladini, Eleonora Raccuia, Simonetta Oliaro‐Bosso, Alessia Ruggiero, Rita Berisio, Milagros Medina, Adrian Velazquez‐Campoy, Salvatore Adinolfi, Mauro Marengo   +10 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

Catalytic reduction of sulfuric acid to sulfur dioxide

Open Chemistry, 2012
Abstract The reduction of H2SO4 to SO2 occurs with a relatively good efficiency only at high temperatures, in the presence of catalysts. Some experimental results, regarding conversion of sulfuric acid (96 wt.%) to sulfur dioxide and oxygen, are reported.
Ancuţa Balla, Cristina Marcu, Damian Axente, Gheorghe Borodi, Diana Lazăr   +4 more
openaire   +3 more sources

Ammonia Catalyzed Formation of Sulfuric Acid in Troposphere: The Curious Case of a Base Promoting Acid Rain.

Journal of Physical Chemistry A, 2017
Electronic structure calculations have been performed to investigate the role of ammonia in catalyzing the formation of sulfuric acid through hydrolysis of SO3 in Earth's atmosphere.
Biman Bandyopadhyay, Pradeep Kumar, P. Biswas   +2 more
semanticscholar   +1 more source

BCS1L‐Associated Disease: 5′‐UTR Variant Shifts the Phenotype Towards Axonal Neuropathy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives To investigate the consequences of a pathogenic missense variant (c.838C>T; p.L280F) and a 5′‐UTR regulatory variant (c.‐122G>T) in BCS1L on disease pathogenesis and to understand how regulatory variants influence disease severity and clinical presentation.
Rotem Orbach, Nunziata Maio, Russell J. Butterfield, A. Reghan Foley, Sarah Silverstein, Yan Li, Katherine Chao, Tanya J. Lehky, Abigail Potticary, Tracey A. Rouault, Sandra Donkervoort, Carsten G. Bönnemann   +11 more
wiley   +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

The Regulation of Trace Metal Elements in Cancer Ferroptosis

Advanced Biology, EarlyView.
The induction of ferroptosis inhibits tumor growth, enhances anticancer efficacy, and overcomes drug resistance. Recent evidence shows nonferrous metal elements play a role in ferroptosis. This review focuses on how trace metals regulate ferroptosis processes like iron accumulation, lipid peroxidation, and antioxidant defense.
Xiaoyan Wang, Yuanyuan Xue, Lei Chang, Xuena Zhu, Wenjun Liu, Tingbo Liang   +5 more
wiley   +1 more source

Effects of Aerosol Hygroscopicity on Fine Particle Mass Concentration and Light Extinction Coefficient at Seoul and Gosan in Korea

Asian Journal of Atmospheric Environment, 2010
The sensitivity of aerosol light extinction coefficient to the aerosol chemical composition change is estimated by (1) calculating the aerosol water content and chemical concentrations by a gas/particle equilibrium model and (2) calculating the aerosol ...
Eun Kyung Choi, Yong Pyo Kim
doaj   +1 more source

A chamber study of the influence of boreal BVOC emissions and sulfuric acid on nanoparticle formation rates at ambient concentrations [PDF]

Atmospheric Chemistry and Physics, 2016
Aerosol formation from biogenic and anthropogenic precursor trace gases in continental background areas affects climate via altering the amount of available cloud condensation nuclei.
M. Dal Maso, L. Liao, J. Wildt, A. Kiendler-Scharr, E. Kleist, R. Tillmann, M. Sipilä, J. Hakala, K. Lehtipalo, M. Ehn, V.-M. Kerminen, M. Kulmala, D. Worsnop, T. Mentel   +13 more
doaj   +1 more source