Results 91 to 100 of about 33,735 (308)
Location of gold placers in Oaxaca [PDF]
ArchéoSciences, 2009 During the late post-Classic period (1250-1521 AD), the Mesoamerican region of Oaxaca was well known for the pre-Hispanic gold metallurgy developed by the Mixtecs and Zapotecs. In this epoch, the most important burials were adorned with exceptional jewels, such as the well know items of Tomb 7 from the archaeological site of Monte Alban, and from other
openaire +2 more sources
Advanced Functional Materials, EarlyView.Intelligent radiative cooling devices, adaptable to various weather conditions, have the potential for year‐round energy savings. This study introduces a sustainable dual‐mode film made from polycaprolactone nanofibers and upcycled chip bags for effective thermal management.
Qimeng Song +4 more
wiley +1 more source
Remediation of Remains Place Gold Mining Land Using Boiler Ash and Sludge from Palm Oil Liquid Waste Processing [PDF]
BIO Web of ConferencesThe activity of placer gold mining has ruined the ecosystem by disturbing the upper soil layers, contaminating waterways, and leading to sedimentation downstream.
Hermis Hermis +5 more
doaj +1 more source
, 2018 Porphyry-epithermal and orogenic gold are two of the most important styles of gold-bearing mineralization within orogenic belts. Populations of detrital gold resulting from bulk erosion of such regions may exhibit a compositional continuum wherein Ag, Cu,
Allan, MM +4 more
core +1 more source
Advanced Functional Materials, EarlyView.Edible electronics needs integrated logic circuits for computation and control. This work presents a potentially edible printed chitosan‐gated transistor with a design optimized for integration in circuits. Its implementation in integrated logic gates and circuits operating at low voltage (0.7 V) is demonstrated, as well as the compatibility with an ...
Giulia Coco +8 more
wiley +1 more source
Assessing gold-bearing potential of the Kvarhush area (Western slope of the Urals, Perm krai) [PDF]
МинералогияThe paper examines the morphology and composition of native gold from placers of the Kvarkush region (Perm krai). Using optical and electron microscopy, 149 native gold grains from three placers are studied.
M.D. Shamsutdinov, S.V. Petrov
doaj +1 more source
PLACERS OF MAJOR VALLEYS IN THE LENA GOLD-PLACERS REGION
Proceedings of higher educational establishments. Geology and Exploration, 2017 The morphology and inner structure of the placers in the maj or valleys of the Lena gold-bearing area are considered. The morphology of placers in the plan and the distribution of gold within the contours of the valleys are determined by the morphodynamic type of the channels and their evolution in different parts of the valley.
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Natural resource base of the Fairbanks North Star Borough [PDF]
, 1967 This report on the natural resource base of the Fairbanks North Star Borough is one of several continuing research projects related to community planning in Alaska.
Haring, R.C., Wolff, E.N.
core
Advanced Functional Materials, EarlyView.For the first time, a highly sensitive electrochemical biosensor based on SiO2‐based hairy particles with a grafted PDMAEMA polymer brush containing a quantifiable and large amount of immobilized Laccase is reported. The fabricated biosensor exhibits a sensitivity of 0.14 A·m⁻¹, a limit of detection (LOD) of 0.1 µm, and a detection range of 0.3–750 µm,
Pavel Milkin +7 more
wiley +1 more source
Geo-spatial Information SciencePrecise lithological mapping is not only a strong key for exploring new mineralized areas but also could help in achieving the optimal exploitation of mineralized regions. In the present case, cause lithological mapping may provide advice not only to the
Hatem M. El-Desoky +9 more
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