Results 101 to 110 of about 93,146 (338)

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  

The impact of vegetation on fractionation of rare earth elements(REE) during water–rock interaction [PDF]

open access: yes, 2006
Previous studies on waters of a streamlet in the Vosges mountains (eastern France) have shown that Sr and rare earth elements (REE) principally originate from apatite dissolution during weathering. However, stream water REE patterns normalized to apatite
Aubert, Dominique   +7 more
core   +5 more sources

Insights to Industrial Electrocatalytic Sulfide Oxidation: Electrode Fabrication, System Engineering, and High‐Value Product Acquisition

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This review summarizes recent advances in electrocatalytic sulfide oxidation (SOR), focusing on catalyst design strategies, reaction system engineering, and pathways for high‐value product generation. The roles of different reduced sulfur species (S2−, HS−, H2S) under various industrial conditions are highlighted, along with approaches to enhance ...
Zhongyuan Wang   +4 more
wiley   +1 more source

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

Effects of the passage of Comet C/2013 A1 (Siding Spring) observed by the Shallow Radar (SHARAD) on Mars reconnaissance orbiter [PDF]

open access: yes, 2015
The close passage of Comet C/2013 A1 (Siding Spring) to Mars provided a unique opportunity to observe the interaction of cometary materials with the Martian ionosphere and atmosphere using the sounding radar SHARAD (SHAllow RADar) aboard Mars ...
Anthony Egan   +29 more
core   +1 more source

Waste to Hydrogen: Transforming Food Waste Into Biohythane (Bio‐H2 + Bio‐CH4) in a Two‐Stage Reactor With the Aid of a Metal‐Ion Catalyst

open access: yesEnergy Science &Engineering, EarlyView.
This study demonstrates a two‐stage catalytic bioreactor system that converts real food waste into high‐purity biohydrogen and biohythane. In Stage‐1, an enriched Clostridium thermocellum culture combined with Ni2+─Fe2+ bimetallic catalysis enhances hydrolysis efficiency and hydrogenase activity, resulting in a 77% increase in H2 yield and 75.8% purity
K. V. Sreedharan   +5 more
wiley   +1 more source

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

Toxicological Analysis of Some Drugs of Abuse in Biological Samples [PDF]

open access: yes, 2015
Consumption of drugs of abuse is a scourge of modern world. Abuse, drug addiction and their consequences are one of the major current problems of European society because of the significant repercussions in individual, family, social and economic level ...
Baconi, Daniela Luiza   +5 more
core   +3 more sources

Characterization of Cantaloupe, Grape, Pumpkin, and Tomato Seed Oils From Xinjiang: Oxidative Stability, Volatile‐Compound Analysis, and Sensory Evaluation

open access: yesFood Chemistry International, EarlyView.
This study compares oxidative stability, fatty acid profiles, volatile compounds, and sensory attributes of four Xinjiang seed oils. Distinct aldehyde‐driven aroma patterns and compositional differences were revealed, providing a scientific basis for quality evaluation and valorization of underutilized plant seed oils in food applications.
Yilai Wan   +4 more
wiley   +1 more source

Metalaxyl Degradation by Mucorales Strains Gongronella sp. and Rhizopus oryzae

open access: yesMolecules, 2017
In this study, the degradation of metalaxyl was investigated in the presence of two Mucorales strains, previously isolated from soil subjected to repeated treatments with this fungicide and selected after enrichment technique.
Maria Rosário Martins   +4 more
doaj   +1 more source

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