Results 101 to 110 of about 91,586 (302)

Vadose zone air as a biogenic source of methane in Nerja Cave system (South of Spain) [PDF]

, 2018
Subterranean air in karst cavities has often low methane contents in comparison to atmosphere and so karst systems have been considered a sink of atmospheric methane. Methane-oxidizing bacteria have been hypothesized as responsible for CH4 depletion in
Benavente, José, Carrasco-Cantos, Francisco, Del Rosal, Yolanda, Etiope, Giuseppe, Liñán-Baena, Cristina, Moriñigo-Gutierrez, Miguel Angel, Ojeda, Lucía, Tapia, Silvana, Vadillo-Perez, Iñaki   +8 more
core  

Determination of Monoethylene Glycol in Gas Condensate Samples by Microchip Micellar Electrokinetic Chromatography Integrated With Capacitively Coupled Contactless Conductivity Detection

ELECTROPHORESIS, EarlyView.
ABSTRACT This study describes the use of microchip micellar electrokinetic chromatography (MEKC) integrated with capacitively coupled contactless conductivity detection (C4D) for the determination of monoethylene glycol (MEG) in gas condensate samples.
Maurício M. L. Pereira, Kariolanda C. A. Rezende, Iris Medeiros Junior, Bruno Charles do Couto, Rogerio M. Carvalho, Claudimir L. do Lago, Wendell K. T. Coltro   +6 more
wiley   +1 more source

Opium trade and use during the Late Bronze Age: Organic residue analysis of ceramic vessels from the burials of Tel Yehud, Israel

Archaeometry, EarlyView., 2022
Abstract Organic residue analysis was conducted on various vessels from burials at Tel Yehud, Israel. The analyses led to new reliable evidence for the presence of opioid alkaloids and their decomposition products. This research revitalizes a decades‐old discussion on the presence and function of the opium trade across a cultural region of utmost ...
Vanessa Linares, Eriola Jakoel, Ron Be’eri, Oded Lipschits, Ronny Neumann, Yuval Gadot   +5 more
wiley   +1 more source

Volume 1, Number 2 - May 1954 [PDF]

, 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

Soil organic matter and mineral content as crucial factors for the fate of tetracycline in soils

Environmental Progress &Sustainable Energy, EarlyView.
Abstract Soil self‐cleaning ability and bioavailability of different pollutants are strongly dependent on the soil properties. It is not easy to determine effects of individual soil characteristics because they can impact together often in a synergic effect.
Martina Klučáková, Petra Závodská
wiley   +1 more source

Dissipation and residue of ethephon in maize field

Journal of Integrative Agriculture, 2015
A rapid and reliable method was developed for analysis of ethephon residues in maize, in combination with the investigation of its dissipation in field condition and stabilities during the sample storage.
Jian-nan DONG, Yong-qiang MA, Feng-mao LIU, Nai-wen JIANG, Qiu JIAN   +4 more
doaj   +1 more source

Nonribosomal peptides, key biocontrol components for Pseudomonas fluorescens In5, isolated from a Greenlandic suppressive soil. [PDF]

, 2015
UnlabelledPotatoes are cultivated in southwest Greenland without the use of pesticides and with limited crop rotation. Despite the fact that plant-pathogenic fungi are present, no severe-disease outbreaks have yet been observed.
Dorrestein, Pieter C, Glaring, Mikkel A, Kersten, Roland, Koyama, Nobuhiro, Michelsen, Charlotte F, Stougaard, Peter, Watrous, Jeramie   +6 more
core  

Synthesis of Carboxylic Cellulose Nanocrystals From Yellow Thatching Grass (Hyparrhenia filipendula) via Citric Acid Hydrolysis

Energy Science &Engineering, EarlyView.
Fractionation of yellow thatching grass using sodium hydroxide and deep eutectic solvent Carboxylated Cellulose nanocrystals (CNCs) were successfully synthesized via hydrolysis with 80 wt% citric acid at 120°C for 4 h Variations in CNC characteristics were observed based on the fractionation method used ABSTRACT Grass is an abundant and renewable ...
Fildah Ayaa, Michael Lubwama, Samuel Ayodele Iwarere, Michael Olawale Daramola, John Baptist Kirabira   +4 more
wiley   +1 more source

Xylariaides A and B, novel cytochalasans with a unique 5/6/5/3 ring system from a soil fungus Xylaria sp. Y01

Natural Products and Bioprospecting
Two new cytochalasans, xylariaides A (1) and B (2), were isolated and identified from a soil fungus Xylaria sp. Y01. Their structures were unambiguously determined by extensive spectroscopic methods including high resolution electrospray ionization mass ...
Yi-Yun Yuan, Yan Li, Wen-Yu Lu, Ai-Lin Liang, Jing Li, Wen-Xuan Wang   +5 more
doaj   +1 more source

Physicochemical Properties and Antioxidant Activity of Apocynum Honey in Different Regions of Xinjiang

Food Chemistry International, EarlyView.
ABSTRACT In this study, honey produced from Apocynum venetum L. was collected from BC (Bachu County), SY (Shaya County), and YL (Yuli County) in Xinjiang. The basic physical and chemical properties of the honey, and the contents of total phenols, total flavonoids, and amino acids were analyzed, and 16 types of polyphenols were quantified using triple ...
Na Zhang, Jingjing Lv, Ruili Zhang, Qinghua Jia, Tiantian Jian, Yawen Li   +5 more
wiley   +1 more source