Results 41 to 50 of about 229,777 (302)

Methane formation driven by light and heat prior to the origin of life and beyond

Nature Communications, 2023
Methane is a potent greenhouse gas, which likely enabled the evolution of life by keeping the early Earth warm. Here, we demonstrate routes towards abiotic methane and ethane formation under early-earth conditions from methylated sulfur and nitrogen ...
Leonard Ernst, Uladzimir Barayeu, Jonas Hädeler, Tobias P. Dick, Judith M. Klatt, Frank Keppler, Johannes G. Rebelein   +6 more
doaj   +1 more source

Thermophysical Properties and Elemental Composition of Black Locust, Poplar and Willow Biomass

Energies, 2022
Biomass is currently the main renewable energy source (RES) in the EU, particularly in Poland. Solid biomass for energy purposes is primarily sourced from forests, the wood processing industry, and agriculture.
Paweł Stachowicz, Mariusz Jerzy Stolarski   +1 more
doaj   +1 more source

Application of Urea and Ammonium Nitrate Solution with Potassium Thiosulfate as a Factor Determining Macroelement Contents in Plants

Agronomy
The following research hypotheses were established in this study: the applied urea and ammonium nitrate solution with potassium thiosulfate (UAN-KTS) has a positive effect on the chemical composition of spring wheat, spring rape and maize; fertilization ...
Marzena S. Brodowska, Mirosław Wyszkowski, Monika Karsznia   +2 more
doaj   +1 more source

Redução catalítica seletiva de óxidos de nitrogênio sobre hematita contendo cobre The selective catalytic reduction of no over copper-containing hematite

Química Nova, 2007
The activity of copper-doped hematite in the SCR with propane, in the presence of oxygen, was evaluated in this work. It was found that copper sulfate led to the production of solids with different specific surface areas depending on the amount of copper.
Hadma Sousa Ferreira, Soraia Jesus Oliveira, Maria do Carmo Rangel, Ernesto A. Urquieta-González, Leandro Martins, José Luís Garcia Fierro, Sérgio G. Marchetti   +6 more
doaj   +1 more source

Spectroscopic and Theoretical Study of CuI Binding to His111 in the Human Prion Protein Fragment 106-115 [PDF]

, 2016
The ability of the cellular prion protein (PrPC) to bind copper in vivo points to a physiological role for PrPC in copper transport. Six copper binding sites have been identified in the nonstructured N-terminal region of human PrPC.
Alberto Vela, Britt Hedman, Claudio O. Fernández, Edward I. Solomon, Herms J., Kates E., Keith O. Hodgson, Liliana Quintanar, Lina Rivillas-Acevedo, Marco C. Miotto, Munzarin Qayyum, Rafael Grande-Aztatzi, Trinidad Arcos-López   +12 more
core   +2 more sources

Nitrogen and sulfur species in acrosols at Mawson, Antarctica, and their relationship to natural radionuclides [PDF]

Journal of Atmospheric Chemistry, 1992
High volume aerosol samples were collected continuously at Mawson, Antarctica (67°36'S, 62°30'E), from February 1987 through October 1989. All samples were analyzed for Na+, Cl-, SO4 =, NO3 -, methanesulfonate (MSA), NH4 +,7Be, and210Pb.
Savoie, DL, Prospero, JM, Larsen, RJ, Saltzman, ES   +3 more
openaire   +3 more sources

Trends of inorganic sulfur and nitrogen species at an urban site in western Canada (2004–2018)

Environmental Pollution, 2023
A 15-year (2004-2018) record of measurement data of gaseous and particulate sulfur and nitrogen pollutants in air collected at an urban site in Burnaby in western Canada was analyzed for generating their decadal trends using three different methods, including linear regression, Mann-Kendall test and Theil-Sen trend estimator (MK-TS), and ensemble ...
Huanbo, Wang, Leiming, Zhang
openaire   +2 more sources

Air Pollution and the Risk and Progression of Multiple Sclerosis: A Systematic Review and Meta‐Analysis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Purpose Air pollution has been linked to several neurological conditions, including stroke and neurodegenerative diseases. Evidence regarding its association with multiple sclerosis (MS) remains conflicting, limited by small sample sizes. Methods PubMed, Embase, Scopus, and Cochrane controlled register of trials (CENTRAL) were searched on ...
Ahmad A. Toubasi, Thuraya N. Al‐Sayegh
wiley   +1 more source

Trace chemical measurements from the northern midlatitude lowermost stratosphere in early spring: Distributions, correlations, and fate [PDF]

, 1997
In situ measurements of a large number of trace chemicals from the midlatitude (37-57°N) lower stratosphere were performed with the NASA DC-8 aircraft during March 1994.
Blake, DR, Bradshaw, JD, Chen, Y, Gregory, GL, Heikes, B, Kondo, Y, Sachse, GW, Singh, HB, Talbot, R, Thornton, D   +9 more
core   +1 more source

Atmospheric concentrations and deposition of oxidized sulfur and nitrogen species at Petaling Jaya, Malaysia, 1993–1998

Tellus B: Chemical and Physical Meteorology, 2000
Wet-only rainwater composition, acid-precursor gas mixing ratios and aerosol loading were determined from weekly-averaged samples at Petaling Jaya, Malaysia, over the five year period from March 1993 to March 1998. Annual deposition fluxes of acidic sulfur and nitrogen species estimated from these data show this site to be heavily impacted by acidic ...
AYERS, G. P., CHOW PENG, LEONG, SZE FOOK, LIM, WAI KONG, CHEAH, GILLETT, R. W., MANINS, P. C.   +5 more
openaire   +2 more sources