Results 61 to 70 of about 91,586 (302)

Determination of diquat and paraquat by high performance liquid chromatography in areas of environmental monitoring

Учёные записки Казанского университета: Серия Естественные науки, 2021
The concentrations of diquat and paraquat, two members of the class of quaternary ammonium compounds (QAC), were measured using high performance liquid chromatography (HPLC) with UV detection and sample preparation with solid phase extraction.
I.M. Fitsev, A.Yu. Likhacheva, A.M. Sayfutdinov, A.Z. Mukharlyamova, S.L. Mokhtarova, Z.R. Nasybullina   +5 more
doaj   +1 more source

Dissolution Study of Biodegradable Magnesium Silicide Thin Films for Transient Electronic Applications

Advanced Science, EarlyView.
Magnesium silicide (Mg2Si) is introduced as a narrow‐bandgap, biodegradable semiconductor for transient electronics. RF‐sputtered and annealed Mg2Si thin films show high intrinsic electrical conductivity and low thermal conductivity. The polycrystalline material undergoes hydrolysis in aquatic and composting environments with minimal cytotoxicity ...
Ji‐Woo Gu, Jun‐Seok Shim, Minjung Chae, Yoonseong Jung, Su‐Min Kim, Young‐In Ryu, Jae‐Hwan Lee, Sung‐Woo Kim, Kyung‐Sub Kim, Tae‐Woo Lee, Edyta Wyszkowska, Jungho Shin, Hyejin Jang, Ju‐Young Kim, Myoung‐Ryul Ok, Jong‐hyoung Kim, Jae‐Young Bae, Seung‐Kyun Kang   +17 more
wiley   +1 more source

Investigation of soil resistivity impacts on the electrodes of grounding system subjected to lightning strikes

IET Generation, Transmission & Distribution
In this paper, the study of the homogeneous resistivity and two‐layer soil influences on the performance of the electrodes of grounding systems subjected to lightning strikes is carried out considering soil ionization.
Osama E. Gouda, Adel Z. El Dein, Sara Yassin, Matti Lehtonen, Mohamed M. F. Darwish   +4 more
doaj   +1 more source

Effect of irrigation with magnetized and ionized water on yield, nutrient uptake and water-use efficiency of winter wheat in Xinjiang, China

Agricultural Water Management
Magnetization can alter hydrogen bonds among water molecules, leading to changes in water physicochemical properties, and ionization can use frequencies to break down polymers for better solubility.
Xinyue Chen, Kai Zhang, Xiaopeng Gao, Xin Ai, Guoyue Chen, Xiaomeng Guo, Chengcheng Wu, Lu Zhang   +7 more
doaj   +1 more source

Atmospheric amines and ammonia measured with a chemical ionization mass spectrometer (CIMS) [PDF]

Atmospheric Chemistry and Physics, 2014
We report measurements of ambient amines and ammonia with a fast response chemical ionization mass spectrometer (CIMS) in a southeastern US forest and a moderately polluted midwestern site during the summer.
Y. You, V. P. Kanawade, J. A. de Gouw, A. B. Guenther, S. Madronich, M. R. Sierra-Hernández, M. Lawler, J. N. Smith, S. Takahama, G. Ruggeri, A. Koss, K. Olson, K. Baumann, R. J. Weber, A. Nenes, H. Guo, E. S. Edgerton, L. Porcelli, W. H. Brune, A. H. Goldstein, S.-H. Lee   +20 more
doaj   +1 more source

SOIL IONIZATION DUE TO HIGH PULSE TRANSIENT CURRENTS LEAKED BY EARTH ELECTRODES [PDF]

Progress In Electromagnetics Research B, 2009
This paper proposes a numerical model of the soil ionization phenomena that can occur when earth electrodes are injected by high pulse transient currents, as the one associated with a direct lightning stroke. Based on finite difference time domain numerical scheme, this model ascribes the electrical breakdown in the soil to the process of discharge in ...
ALA, Guido, DI SILVESTRE, Maria Luisa, VIOLA, Fabio, FRANCOMANO, Elisa   +3 more
openaire   +2 more sources

Higher‐Level Structural Classification of Pseudomonas Cyclic Lipopeptides through Their Bioactive Conformation

Advanced Science, EarlyView.
Solution structures of a series of cyclic lipodepsipeptides from Pseudomonas reveal that these specialized metabolites adopt left‐handed alpha helical conformations of only two types, being either ‘stapled’ or ‘catch‐pole’ helix. The particular modular distribution of the biosynthetic gene clusters is found to determine the extent of their conserved ...
Benjámin Kovács, Durga Prasad, Vic De Roo, Matthias Vanheede, Penthip Muangkaew, Annemieke Madder, Monica Höfte, René De Mot, Niels Geudens, José C. Martins   +9 more
wiley   +1 more source

Molecular study of lipids in humic acids by sequential chemical degradation [PDF]

, 2009
Lipidy v půdě vykazují poměrně vysokou resistenci k biodegradaci, mohou proto tak zajistit informace o zdrojích organické hmoty a diagenetických procesech. Půdní organická hmota je vysoce heterogenní a vyskytují se v ní různé dynamické systémy.
Bachratá, Radka
core  

Growing media constituents determine the microbial nitrogen conversions in organic growing media for horticulture [PDF]

, 2016
Vegetables and fruits are an important part of a healthy food diet, however, the eco-sustainability of the production of these can still be significantly improved.
Boon, Nico, Grunert, Oliver, Hernandez Sanabria, Emma, Perneel, Maaike, Reheul, Dirk, Van Labeke, Marie-Christine, Vlaeminck, Siegfried   +6 more
core   +1 more source

Recent Advances in Laser‐Induced Graphene‐Based Gas Sensors: From Sensing Mechanisms to Biomedical Applications

Advanced Science, EarlyView.
Laser‐induced graphene (LIG) provides a scalable, laser‐direct‐written route to porous graphene architecture with tunable chemistry and defect density. Through heterojunction engineering, catalytic functionalization, and intrinsic self‐heating, LIG achieves highly sensitive and selective detection of NOX, NH3, H2, and humidity, supporting next ...
Md Abu Sayeed Biswas, Ankan Dutta, Shuvendu Das, Abu Musa Abdullah, Wanqing Zhang, Fatema Tuz Zohra, Huanyu Cheng   +6 more
wiley   +1 more source