Results 11 to 20 of about 1,298,985 (352)

Trial calculation of relating the equilibrium state of minerals to the descriptive mineralogy [PDF]

open access: yes, 1997
Statistical calculation have been carried out on the volumes of the asymmetric unit of minerals. This treatment is related to the origin of the symmetry and periodicity of the crystals, and to the equilibrium conditions of these crystals.
Kawahara, Akira
core   +1 more source

Conflict Minerals Legislation: The SEC’s New Role as Diplomatic and Humanitarian Watchdog [PDF]

open access: yes, 2012
Buried in the voluminous Dodd-Frank Wall Street Reform and Consumer Protection Act is an oft-overlooked provision requiring corporate disclosure of the use of “conflict minerals” in products manufactured by issuing corporations. This Article scrutinizes
Woody, Karen E.
core   +2 more sources

Structural Modification of KAISiO4 Minerals [PDF]

open access: yes, 1997
Kalsilite, a polymorph of KAISiO4 is an end member of nepheline-kalsilite series and the mineral was syn-thesized by hydorhermal methods. The synthetic kalsilite is hexagonal, P63, with a=5.151(5), c=8.690(8) A.
Okamoto, Yasuhiko
core   +1 more source

Risk assessment and allocation in the contract for public works used in Saudi Arabia construction industry

open access: yesCogent Engineering, 2018
This article aims to propose a new model to assess the Saudi public contract for risk sharing through the investigation of the perceptions and proposals of owners and contractors in Saudi Arabia on the statement of the clauses of the contract.
Khaled Ashmawi   +4 more
doaj   +1 more source

Hydrated Double Carbonates - A Raman and Infrared Spectroscopic Study [PDF]

open access: yes, 2007
The Raman spectra of selected double carbonates including pirssonite, gaylussite, shortite and quintinite complemented with infrared spectra have been used to characterise the structure of these carbonate minerals.
Dickfos, Marilla, Frost, Raymond
core   +2 more sources

Clay minerals and sedimentary basin history [PDF]

open access: yes, 2005
Clay minerals in the mud and soil that coat the Earth's surface are part of a clay cycle that breaks down and creates rock in the crust. Clays generated by surface weathering and shallow diagenetic processes are transformed into mature clay mineral ...
Merriman, Richard J.
core   +1 more source

Formation of magnetic minerals at hydrocarbon-generation conditions [PDF]

open access: yes, 2015
In this paper, we report the pyrolysis and formation of magnetic minerals in three source rock samples from the Wessex Basin in Dorset, southern England.
Abubakar, R.   +6 more
core   +2 more sources

Evaluating the application of the Optima® classifier as a secondary beneficiation stage at the Phola Coal Processing Plant [PDF]

open access: yesMATEC Web of Conferences
South Africa's coal mining operations frequently produce fine coal which is usually discarded due to the high costs of handling. Studies have shown that these fines possess acceptable market calorific values and low ash content.
Malekutu Karabo   +5 more
doaj   +1 more source

Application of LIBS in Detection of Antihyperglycemic Trace Elements in Momordica charantia [PDF]

open access: yes, 2009
The present study exploits the information based on concentration of trace elements and minerals in understanding the role/mechanism of action of freeze-dried fruit powder suspended in distilled water of Momordica charantia (family: Cucurbitaceae) in ...
Bicanic, D.D.   +5 more
core   +2 more sources

Towards sensor array materials: can failure be delayed?

open access: yesScience and Technology of Advanced Materials, 2015
Further to prior development in enhancing structural health using smart materials, an innovative class of materials characterized by the ability to feel senses like humans, i.e. ‘nervous materials’, is discussed.
Samir Mekid   +3 more
doaj   +1 more source

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