Results 31 to 40 of about 14,278 (336)
Livelihood diversification and the expansion of artisanal mining in rural Tanzania: drivers and policy implications [PDF]
, 2010 This paper provides an extended analysis of livelihood diversification in rural Tanzania, with special emphasis on artisanal and small-scale mining (ASM).
African Development Bank +27 more
core +1 more source
ANALYSIS OF MINERALS IN CEMPAKA-MADU GEMSTONE FROM ACEH INDONESIA BY USING XRF
Jurnal Natural, 2018 . Cempaka-madu is a local name for one kind of gemstone from Aceh province in Indonesia. It is so attractive and its color is dark-orange. We have utilized X-Ray Florescent (XRF) to study these cempaka-madu gemstones from Aceh Tengah and Nagan Raya ...
Ismail ., Akmal Nizar, Mursal .
doaj +1 more source
NFT Certificates and Proof of Delivery for Fine Jewelry and Gemstones
IEEE Access, 2022 Fine jewelry is a unique class of ornaments composed of precious metals and gemstones. Premium-grade metals such as gold, platinum, and sliver, and gemstones such as pearls, diamonds, rubies, and emeralds are used use to make fine jewelry.
Noura Alnuaimi +5 more
doaj +1 more source
Engineered biopolymeric scaffolds for chronic wound healing
Frontiers in Physiology, 2016 Skin regeneration requires the coordinated integration of concomitant biological and molecular events in the extracellular wound environment during overlapping phases of inflammation, proliferation, and matrix remodeling. This process is highly efficient
Laura E Dickinson, Sharon Gerecht
doaj +1 more source
Assessment of environmental impact of gemstone mining in Ijero-Ekiti, Nigeria [PDF]
, 2018 Purpose. To examine the environmental impacts of gemstone mining activities on the people of Ijero-Ekiti, Ekiti State, Nigeria. Methods. Soil and water test were carried out on samples from the mine and its environment.
Afeni, T, Ibitolu, F
core +1 more source
Biology, Medicine & Natural Product Chemistry, 2021 In Nigeria, like many developing nations, the resultant effect of land degradation: aggravated soil erosion, flood disasters, salinization or alkalisation, and the desertification have been a major public health concern for the past decades, however this
Efe Sylvanus Abiya +2 more
doaj +1 more source
Heliyon, 2022 The elemental composition, mineral phases, and crystalline structure of nephrite jade were investigated using calibration-free laser-induced breakdown spectroscopy (CF-LIBS), Raman spectroscopy, and X-ray diffraction (XRD).
R. Khan +5 more
semanticscholar +1 more source
3D Imaging of Gems and Minerals by Multiphoton Microscopy
, 2018 Many optical approaches have been used to examine the composition and structure of gemstones, both recently and throughout history. The nonlinear optical behavior of different gemstones has not been investigated, and the higher order terms to the ...
Cromey, Benjamin +2 more
core +1 more source
Rat behavior and dopamine release are modulated by conspecific distress
eLife, 2018 Rats exhibit ‘empathy’ making them a model to understand the neural underpinnings of such behavior. We show data consistent with these findings, but also that behavior and dopamine (DA) release reflects subjective rather than objective evaluation of ...
Nina T Lichtenberg +16 more
doaj +1 more source
, 2021 Artisanal and small-scale miners are facing unprecedented challenges due to the novel coronavirus (Covid-19) pandemic. The paper adopts a practice-based approach to examine the impact of Covid-19 on gold and gemstone artisanal and small-scale mining (ASM)
Judy N. Muthuri +4 more
semanticscholar +1 more source