Results 61 to 70 of about 91,818 (202)

Volume 1, Number 2 - May 1954 [PDF]

open access: yes, 1954
The Entropy (also published as the Providence College Journal of Physics and Chemistry) was an undergraduate scholarship journal published by the Phi Chi Club of Providence College. (Volume 1, Number 2 - May 1954 - 10 pages in total.

core   +1 more source

Novel multilocus sequence typing scheme reveals high genetic diversity of human pathogenic members of the Fusarium incarnatum-F. equiseti and F. chlamydosporum species complexes within the United States [PDF]

open access: yes, 2009
Species limits within the clinically important Fusarium incarnatum-F. equiseti and F. chlamydosporum species complexes (FIESC and FCSC, respectively) were investigated using multilocus DNA sequence data.
O'Donnell, K.   +5 more
core   +1 more source

Wide-energy programmable microwave plasma-ionization for high-coverage mass spectrometry analysis

open access: yesNature Communications
Although numerous ambient ionization mass spectroscopy technologies have been developed over the past 20 years to address diverse analytical circumstances, a single-ion source technique that can handle all analyte types is still lacking.
Fengjian Chu   +6 more
doaj   +1 more source

Atmospheric ionization and cosmic rays: studies and measurements before 1912

open access: yes, 2012
The discovery of cosmic rays, a milestone in science, was based on the work by scientists in Europe and the New World and took place during a period characterised by nationalism and lack of communication. Many scientists that took part in this research a
Alessandro de Angelis   +18 more
core   +1 more source

Study of Unmanned Systems to Evaluate the Martian Environment. Volume IV - Summary [PDF]

open access: yes
Unmanned space mission to determine Martian environmental factors influencing design of systems for manned space mission to Mars - summary ...
Dergarabedian, P., Sohn, R. L.
core   +1 more source

Mitigation of GHGs Emission From Soils by a Catalyzed In-Situ Photo-Oxidative Polymerization of Soil Organic Matter [PDF]

open access: yes, 2010
Agricultural lands under food and bio-energy crops, managed grass and permanent crops including agro-forestry, occupy about 40-50% of the Earth's land surface^1^. In 2005, agriculture accounted for an estimated emission of 5.1 to 6.1 GtCO2-eq/yr (10-
Alessandro Piccolo, Riccardo Spaccini
core   +1 more source

Measurements of positive ions and air-earth current density at Maitri, Antarctica [PDF]

open access: yes, 2007
Simultaneous measurements of the small-, intermediate- and large- positive ions and air earth current density made at a coastal station, Maitri at Antarctica during January to February 2005, are reported.
Fuchs N. A.   +8 more
core   +3 more sources

The Contingency of Soil Microorganisms and the Selected Soil Biotic and Abiotic Parameters Under Different Land-Uses

open access: yesEkológia (Bratislava), 2019
Land use changes are local phenomena with global impact. They have an impact in a cumulative sense on biodiversity or soil degradation. This study aimed to examine the effects of different land-uses (arable land, permanent grasslands, abandoned ...
Júdová Jana   +4 more
doaj   +1 more source

Analysis of benzene, toluene, ethylbenzene and xylenes in soils by headspace and gas chromatography/flame ionization detector

open access: yesSemina: Ciências Exatas e Tecnológicas, 2006
The constituents of gasoline: benzene, toluene, ethylbenzene and xylenes (BTEX) are frequently found in soils due to leaks in fuel storage tanks and they present chronic toxicity. In this work it was developed and validated a methodology of BTEX analysis
Jurandir Pereira Pinto   +3 more
doaj  

Determination of Milk Products in Ceramic Vessels of Corded Ware Culture from a Late Eneolithic Burial

open access: yesMolecules, 2018
In this study, a soil from two ceramic vessels belonging to Corded Ware culture, 2707⁻2571 B.C., found in a cremation grave discovered in Central Moravia, Czech Republic, was analyzed using matrix-assisted laser desorption/ionization⁻mass ...
Lukáš Kučera   +10 more
doaj   +1 more source

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