Results 61 to 70 of about 2,000 (199)

Acid Resistant and Highly Silver Selective Membranes Based on Charged Nanoporous 2D‐Materials

Small, EarlyView.
In this work, new membranes based on charged & nanoporous nanosheets with unprecedented selectivity to silver versus a wide range of other metallic ions are reported. Furthermore, a demonstrated and lead specific intralamellar lead pathway is demonstrated. A potential applicability for ubiquitous silver in WEEE is validated.
Sarah M. Chevrier, Thibault Rosier, Bo Han, Lina Cherni, Fabien L. Olivier, Hélène Isnard, Jean‐Christophe P. Gabriel   +6 more
wiley   +1 more source

GOLD FORMATIONS OF THE PRIAMURSKAYA PROVINCE

Известия высших учебных заведений: Геология и разведка, 2016
It was found that within the Priamurskaya prov-nce of Late Me-ozoic age the depos-ts and occurrences of gold-quartz are wide-pread, and goldsulphide-quartz, goldsilver and goldpolymetallic formations are less popular.
V. A. Stepanov, A. V. Melnikov
doaj   +1 more source

ChitoSilkBioPatch: A bio‐inspired wound dressing scaffold for antibiotic‐free diabetic wound management

VIEW, EarlyView.
We present ChitoSilkBioPatch, a maleimide‐functionalized chitosan/dACM hydrogel integrated with a stretchable nanopatterned silk mesh to provide intrinsic, antibiotic‐free antibacterial activity and bioactive wound support. The scaffold eliminates S. aureus and P.
Dorsa Dehghan‐Baniani, Babak Mehrjou, Yucong Li, Zhaowei Jiang, Xiaomin Lu, Yin Xiao, Huanxiong Chen, Tsz Lam Yiu, Chi Chiu Wang, Hongkai Wu, Gang Li, Paul K. Chu, Wayne Yuk Wai Lee   +12 more
wiley   +1 more source

Localisation of gold ores in faults of different types

Известия высших учебных заведений: Геология и разведка, 2020
The results of the author’s and general works of domestic and foreign geologists, who studied the location of the largest gold deposits in fault zones, characterised by the structure of ore-bearing zones and the concentration of reserves of ores and gold
E. M. Nekrasov
doaj   +1 more source

Faith, gender and financial investment: Providence and Presbyterianism in Scotland and abroad

Asia‐Pacific Economic History Review, EarlyView.
Abstract Mid‐nineteenth century fictional representations of misdirected investment by widows and clergy position them as ignorant in financial matters and hence pitiable. While scholars have recognised female agency in nineteenth century commerce, insufficient attention has been paid to religious belief in financial decision‐making.
Jennifer Jones, Susan Poole
wiley   +1 more source

The exploitation of silver deposits in early medieval Europe: some documentary, economic and social problems

Archaeometry, EarlyView.
Abstract Focusing on Southern Europe, this article sheds light on the mining landscape of the early Middle Ages. Based on the current state of historical and archaeological knowledge, the article raises a number of questions that can be extended to other European regions.
Nicolas Minvielle Larousse
wiley   +1 more source

Porphyry and Epithermal Au-Cu Systems of the Southern Caucasus and Northern Iran

Bulletin of the Mineral Research and Exploration
This article presents tangible geological evidence for coexistence of porphyry copper and epithermal gold systems within single polygenic deposits and provides a paleothermophysical model for their origins.
Alexander G. Tvalchrelidze
doaj   +1 more source

Chernorechensk gold ore deposit (Eastern Donbass)

Геология и геофизика Юга России
Статья посвящена характеристике Чернореченского рудопроявления, – одного из перспективных золоторудных объектов Восточного Донбасса. Актуальность определяется необходимостью выявления промышленных запасов золота в Восточном Донбассе для диверсификации горнодобывающей отрасли. Цель.
openaire   +1 more source

Phased combined development of gold ore deposits

Sustainable Development of Mountain Territories
Introduction. It is noted that in the Russian gold mining industry, the profitability of gold production is associated with the development of technologies for leaching it from substandard ores and enrichment waste. It is shown that the priority aspect of the development of substandard raw materials is to increase the yield of more gold with acceptable
openaire   +1 more source

Quality from Kent: Preliminary results from the analysis of fifth‐ to seventh‐century silver alloys

Archaeometry, EarlyView.
Abstract This paper explores early results from the chemical and lead isotope analysis of 30 silver‐alloy objects from southeast England dating between the fifth and seventh centuries CE, presenting limited aspects of the three main analyses that were conducted. First, a comparison of the results gained from surface x‐ray fluorescence (pXRF) values and
Toby F. Martin, Matthew J. Ponting
wiley   +1 more source