Results 71 to 80 of about 93,670 (295)

Jarosite stability on Mars [PDF]

, 2005
Jarosite, a potassium (sodium) iron sulphate hydrated mineral, has recently been identified on the martian surface by the Opportunity rover. Using recent thermochemical data [Drouet and Navrotsky, 2003, Geochim. Cosmochim.
Drouet, Christophe, Forray, Ferenc Lázár, Navrotsky, Alexandra   +2 more
core   +3 more sources

A 3D Biofabricated Disease Model Mimicking the Brain Extracellular Matrix Suitable to Characterize Intrinsic Neuronal Network Alterations in the Presence of a Breast Tumor Disseminated to the Brain

Advanced Functional Materials, EarlyView.
A 3D disease model is developed using customized hyaluronic‐acid‐based hydrogels supplemented with extracellular matrix (ECM) proteins resembling brain ECM properties. Neurons, astrocytes, and tumor cells are used to mimic the native brain surrounding.
Esra Türker, Mateo S. Andrade Mier, Jessica Faber, Mike Friedrich, Zan Lamberger, Jeannette Weigelt, Christian Stigloher, Nicoletta Murenu, Natascha Schaefer, Jörg Tessmar, Gregor Lang, Silvia Budday, Katrin G. Heinze, Antje Appelt‐Menzel, Pamela L. Strissel, Reiner Strick, Carmen Villmann   +16 more
wiley   +1 more source

Study on deformation of layered rock tunnel based on material point method [PDF]

Archives of Civil Engineering
The stability problems of layered rock mass are frequently encountered in tunnel and underground engineering. Affected by bedding plane, the mechanical properties of surrounding rock show obvious anisotropy, which makes its failure characteristics more ...
Jingjie Pang, Zhenhua Xing, Yang Li, Binwei Xia, Gexin Wan, Shusen Wang, Kang Fu   +6 more
doaj   +1 more source

Identifying Arkansas Food Desert Blocks Suitable for a Peer-to-Peer Modeled Food Redistribution Program [PDF]

, 2019
Nearly 10% of Americans reside in low-income urban food deserts which are low-income areas that lack access to affordable and nutritious foods. Food deserts in Arkansas contribute to a food insecurity rate above the national average, making it one of the
Durand-Morat, Alvaro, Fang, Di, King, Emily A, Popp, Jennie S, Thomsen, Michael R.   +4 more
core   +2 more sources

Geophysical and geochemical constraints on geoneutrino fluxes from Earth's mantle [PDF]

, 2012
Knowledge of the amount and distribution of radiogenic heating in the mantle is crucial for understanding the dynamics of the Earth, including its thermal evolution, the style and planform of mantle convection, and the energetics of the core.
Allègre, Araki, Arevalo, Arevalo, Bassin, Bellini, Boyet, Campbell, Davies, Dye, Dye, Dziewonski, Edwin S. Kite, Enomoto, Fiorentini, Fiorentini, Fitoussi, Gando, Hart, Hofmann, Jaupart, Javoy, Javoy, Krauss, Mantovani, McDonough, McDonough, Murakami, O'Neill, Ondřej Šrámek, Palme, Ritsema, Rudnick, Salters, Shijie Zhong, Stephen T. Dye, Su, Turcotte, Vedran Lekić, Wang, Warren, Wasson, Wen, William F. McDonough, Workman, Wurm, Zhang   +46 more
core   +2 more sources

Self‐Trapped Hole Migration and Defect‐Mediated Thermal Quenching of Luminescence in α‐ and β‐Ga2O3

Advanced Functional Materials, EarlyView.
Temperature‐dependent photoluminescence and first‐principles calculations reveal self‐trapped hole migration as the microscopic origin of thermal quenching in α‐ and β‐Ga2O3. The low migration barrier in α‐Ga2O3 enables defect trapping and enhances blue luminescence, while the higher barrier in β‐Ga2O3 preserves ultraviolet emission at elevated ...
Nima Hajizadeh, Ymir K. Frodason, Clemens Petersen, Benjamin M. Janzen, Luca Sung‐Min Choi, Nils Bernhardt, Felix Nippert, Zbigniew Galazka, Joel B. Varley, Holger von Wenckstern, Lasse Vines, Markus R. Wagner   +11 more
wiley   +1 more source

Failure behaviors of anisotropic shale with a circular cavity subjected to uniaxial compression

Journal of Rock Mechanics and Geotechnical Engineering
Layered rock formations are frequently encountered during the excavation of underground structures. The stability of such structures is influenced not only by the stress concentration caused by the cavities in the strata but also by the anisotropy of the
Xianhui Feng, Huilin Liu, Peitao Wang, Shichao Zhang, Quanqi Zhu, Chun'an Tang, Yaxing Leng   +6 more
doaj   +1 more source

Study on Evolution Characteristics of Regenerated Roof Structure in Downward Mining of Bifurcated Coal Seam

Advances in Materials Science and Engineering, 2021
In recent years, the structural evolution characteristics of the regenerated roof of the lower coal seam have become a research hotspot when the bifurcation coal seam is mined downward.
Ru Hu, Jiwen Wu, WenBao Shi, Xiaorong Zhai, Kai Huang   +4 more
doaj   +1 more source

DEVELOPMENT OF COMPUTING MODEL OF GEOMECHANICS SYSTEM «LAYERED MASSIF - WORKING SUPPORT» AT PHYSICAL PARAMETERS OF ROCKS [PDF]

, 2018
Substantiation of method forecasting of manifestation rock pressure in the system «layered massif – working support» based on the detection of patterns displacement any point of circuit the preparatory working during the ...
FOMYCHOV, Vadym, LAPKO, Viktor, POCHEPOV, Viktor   +2 more
core  

New Theory of the Earth [PDF]

, 2007
New Theory of the Earth is an interdisciplinary advanced textbook on all aspects of the interior of the Earth and its origin, composition, and evolution: geophysics, geochemistry, dynamics, convection, mineralogy, volcanism, energetics and thermal ...
Anderson, Don L.
core   +2 more sources