Results 31 to 40 of about 376,116 (305)

Dithiothreitol‐Measured Oxidative Potential of Reference Materials of Mineral Dust: Implications for the Toxicity of Mineral Dust Aerosols in the Atmosphere

GeoHealth, 2023
Oxidative stress is a mechanism that might raise the toxicity of mineral dust aerosols. We evaluated the oxidative potential (OP) of four reference materials (RMs) of mineral dusts using dithiothreitol assay.
Chiharu Nishita‐Hara, Hiroshi Kobayashi, Keiichiro Hara, Masahiko Hayashi   +3 more
doaj   +1 more source

Case-Building Behavior, Persistence, and Emergence Success of \u3ci\u3ePycnopsyche Guttifer\u3c/i\u3e (Walker) (Trichoptera: Limnephilidae) in Laboratory and \u3ci\u3ein situ\u3c/i\u3e Environments: Potential Trade-Offs of Material Preference [PDF]

, 2018
When removed from their cases in a non-flow laboratory environment, 5th instar Pycnopsyche guttifer (Walker) larvae were always successful in constructing a new case within 24 h when woody debris was present as a material choice.
Hocquard, Kate, Houghton, David C, Rogers, Sarah E, Wolfe, Charlotte I   +3 more
core   +2 more sources

Dataset of mineral contents of fine-sand and silt-sized soil particles from deserts in China and Mongolia

Data in Brief, 2021
There are over 70 types of mineral species in desert soils. Previous data have focused on major mineral contents and thus, the identification of minor mineral species is lacking.
Tong He, Jessica Gray, Ying Gu
doaj   +1 more source

‘Mineral particles and the environment’: introduction [PDF]

Mineralogical Magazine, 2003
The study of mineral particles has become increasingly important in the earth sciences, especially in the emerging field of environmental mineralogy. The Mineralogical Society highlighted this by dedicating its Spring Meeting in April 2001, held in Kingston University, Surrey, UK, to the subject.
J. Entwistle, B. Williamson, K. Hudson-Edwards   +2 more
openaire   +1 more source

Microscopic experimental study on the heterogeneity and quantitative characterization of mineral grains and pore structures in coarse-grained glutenites

Meitan xuebao
The heterogeneity of rock is the essential reason for its nonlinear macroscopic mechanical properties under external forces. To study the degree of influence of mineral particles and pore structure on the heterogeneity of rock, coarse-grained glutenites ...
Shuai WANG, Ying XU, Yanbo ZHANG, Xulong YAO, Ling WANG   +4 more
doaj   +1 more source

Characteristics and Aging of Traffic-Emitted Particles with Sulfate and Organic Compound Formation in Urban Air

Atmosphere, 2022
Traffic is a major source of anthropogenic aerosol in urban atmosphere. In this study, aerosol particles were measured with a TEM-EDX system at the roadside of a main road in the northwestern part of Beijing, China, under clear and hazy conditions. Soot,
Jiaoping Xing, Longyi Shao, Feifeng Chen, Wenhua Wang, Daizhou Zhang   +4 more
doaj   +1 more source

Theoretical basics of process of the dispersal system correction [PDF]

E3S Web of Conferences, 2020
Factors analysis, determining the stability of mineral dispersal systems during disintegration was done. A mathematical model of the process of formation of small particles of the mineral component of hydromineral mixture in the field of hydrodynamic ...
Khrunina Natalia, Korneeva Svetlana
doaj   +1 more source

Effects of Different Solid–Liquid Parameters on Flow Characteristics and Performance Output of Mineral Extraction Pumps: Analysis and Experimental Validation

Journal of Marine Science and Engineering
It is essential to investigate the performance output and flow characteristics within deep-sea mineral extraction pumps using appropriate numerical calculation methods. In this study, by taking a deep-sea mineral extraction pump prototype as the subject,
Shunjun Hong, Yuanwen Li, Xiaozhou Hu, Zihai Yang, Shaowei Lei, Pengyun Wei, Junhong Hu, Xingpeng Wang   +7 more
doaj   +1 more source

Influence of Copper Particles on Breakdown Voltage and Frequency-Dependent Dielectric Property of Vegetable Insulating Oil

Energies, 2017
The insulating performance of oil is vulnerable to particles especially the conductive particles. This paper investigated the influence of copper particles of micrometer size on the breakdown strength and frequency-dependent properties of vegetable oil ...
Jing Zhang, Feipeng Wang, Jian Li, Hehuan Ran, Dali Huang   +4 more
doaj   +1 more source

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source