Results 41 to 50 of about 434,726 (351)

Jamming and Stress Propagation in Particulate Matter

, 1998
We present simple models of particulate materials whose mechanical integrity arises from a jamming process. We argue that such media are generically "fragile", that is, they are unable to support certain types of incremental loading without plastic ...
Alexander, Bak, Ball, Bouchaud, Bouchaud, Brockbank, Cates, Claudin, Claudin, Cundall, Dantu, Edwards, Edwards, Edwards, Edwards, Farr, Gudehus, Hooke, J.-P. Bouchaud, J.P. Wittmer, Kolymbas, Laun, Liu, M.E. Gates, Melrose, Nagel, P. Claudin, Radjai, Smid, Thornton, Thornton, Wittmer, Wittmer, Wood   +33 more
core   +2 more sources

Ideal Molecular Sieving with a Dense MOF for Helium Upgrading with Highly Diffusion Selective Mixed Matrix Membranes

Advanced Functional Materials, EarlyView.
The separation of Helium gas from natural gas is challenging but highly important. MIL‐116(Ga), a “non‐porous” metal–organic framework is used as a molecular sieve to separate He from CH4. Druse‐like MIL‐116(Ga) particles are integrated into polysulfone mixed matrix membranes.
Ayisha Komal, Laura Calderón‐Rodríguez, Oksana Smirnova, Eren Grossmann, Aparna Binu Varghese, Karen Marlenne Garcia Alvarez, Andreas Schneemann, Thomas Hoyer, Ralf Wyrwa, Felix Helmut Schacher, Alexander Knebel   +10 more
wiley   +1 more source

Particulate Matter Exposure Impairs Systemic Microvascular Endothelium-Dependent Dilation [PDF]

, 2004
Acute exposure to airborne pollutants, such as solid particulate matter (PM), increases the risk of cardiovascular dysfunction, but the mechanisms by which PM evokes systemic effects remain to be identified.
Barger, Mark, Boegehold, Matthew A., Castranova, Vincent, Nurkiewicz, Timothy R., Porter, Dale W.   +4 more
core   +3 more sources

Bimetallic Nanoparticles as Cocatalysts for Photocatalytic Hydrogen Production

Advanced Functional Materials, EarlyView.
Recent developments have introduced bimetallic nanoparticles as effective cocatalysts for photocatalytic systems. This review explores the rapidly expanding research on bimetallic cocatalysts for photocatalytic production of hydrogen, emphasizing the creation of carrier‐selective contacts, localized surface plasmon resonance effects, methodologies for ...
Yufen Chen, Asier Agrelo‐Lestón, Ignasi Burgués‐Ceballos, Jordi Llorca, Lluís Soler   +4 more
wiley   +1 more source

PM2.5-bound Inorganic and Nonpolar Organic Compounds in Chuncheon, Korea

Asian Journal of Atmospheric Environment, 2022
In this study, major chemical components of PM2.5 including nitrate, sulfate, organic carbon (OC), and elemental carbon (EC) were measured in Chuncheon, South Korea in May–June, 2021.
Sung-Won Park, Young-Ji Han, Jin-Hyuk Hong, Tae-Hyung Lee   +3 more
doaj   +1 more source

Quantitative evidence from VOCs source apportionment reveals O3 control strategies in northern and southern China

Environment International, 2023
Ground-level ozone (O3) pollution has received widespread attention because its rising trend and adverse ecological impacts. However, the extremely strong photochemical reactions of its precursor volatile organic compounds (VOCs) increase the difficulty ...
Zhenyu Wang, Xiao Tian, Jie Li, Feng Wang, Weiqing Liang, Huan Zhao, Bo Huang, Zaihua Wang, Yinchang Feng, Guoliang Shi   +9 more
doaj   +1 more source

Particulate Organic Matter as a Soil Quality Indicator of Sugarcane Plantations in East Java [PDF]

, 2012
This study is aimed to test the hypothesis that the soil quality of sugarcane plantations closely linked to the particulate organic matter (POM) and earthworm's populations. The research was conducted at five sites in Malang, East Java.
Arisoesialaningsih, E. (Endang), Hairiah, K. (Kurniatun), Nurhidayati, N. (Nurhidayati), Suprayogo, D. (Didik)   +3 more
core  

Air Pollution in the Valparaiso Area [PDF]

, 2020
Volatile Organic Compounds (VOC’s) and particulate matter (PM) have been serious air pollution concerns around the world, particularly where industries and high volume traffic is present. These pollutants have been shown to have a negative effect on most
Burns, Meghanne, Junglas, Seth, King, Jack, Kohlmeyer, Kyle, McIntosh, Jessica, Peller, Julie, Tope, Jayden, Tran, Linh   +7 more
core   +1 more source

Relating hygroscopicity and composition of organic aerosol particulate matter [PDF]

, 2010
A hygroscopicity tandem differential mobility analyzer (HTDMA) was used to measure the water uptake (hygroscopicity) of secondary organic aerosol (SOA) formed during the chemical and photochemical oxidation of several organic precursors in a smog chamber.
Aiken, Allison C., Alfarra, M. Rami, Baltensperger, Urs, Barmpadimos, Iakovos, Canagaratna, Manjula R., Collins, Donald R., DeCarlo, Peter F., Dommen, Josef, Duplissy, Jonathan, Gysel, Martin, Jimenez, Jose Luis, Metzger, Axel, Prevot, André Stephan Henry, Tomlinson, Jason M., Tritscher, Torsten, Weingartner, Ernest, Worsnop, Douglas R.   +16 more
core   +2 more sources

Photocatalytic Versus Stoichiometric Hydrogen Generation Using Mesoporous Silicon Catalysts: The Complex Role of Sacrificial Reagents

Advanced Functional Materials, EarlyView.
This study highlights the importance of accounting for stoichiometric hydrogen produced when utilizing Si photocatalysts. The stoichiometric contribution is sacrificial reagent dependent and decreases with increasing sterics around the catalyst surface.
Sarrah H. Putwa, Sarah A. Martell, Berthold Reis, Simona Schwarz, Mita Dasog   +4 more
wiley   +1 more source