Results 101 to 110 of about 119,952 (305)

Histological Characterization and Comparative Transcriptomic Analysis of Gonads During Early Sex Differentiation in the Northern Snakehead (Channa argus)

Animal Research and One Health, EarlyView.
This study delineates the early sex differentiation timeline in the northern snakehead (Channa argus). These findings provide a foundation for future sex‐control breeding in this economically important species. ABSTRACT The northern snakehead (Channa argus) is an economically important aquaculture species in China.
Chaonan Sun, Donglei Sun, Haishen Wen, Xin Qi, Chao Li, Xiaoyan Zhang, Yun Li   +6 more
wiley   +1 more source

‘Sometimes, I would look at my books and cry because I felt like I was left behind’: Understanding the learning of Indigenous girls during the COVID‐19 pandemic in the districts of Chongwe and Solwezi in Zambia

British Educational Research Journal, EarlyView.
Abstract Grounded in principles of epistemic justice, this article examines the educational impacts of Zambia's COVID‐19 school closures on Indigenous girls in two districts and highlights community‐led pathways for resilience. National responses prioritised broadcast and digital delivery but presupposed access to electricity, digital devices and ...
Marcellus Forh Mbah, Leigh Jarvis, Ane Turner Johnson, Chidi Ezegwu, Priscillah Nsama, Austine Nakanga   +5 more
wiley   +1 more source

Combined method of opencast and underground mining of valuable ore

E3S Web of Conferences, 2018
The efficiency of the combined opencast and underground mining of deposits directly depends on the overburden amount within the open pit boundaries. The amount of overburden to be removed, in its turn, is determined by the angles of the open pit slopes ...
Valiev Niyaz, Berkovich Vyacheslav, Propp Vladimir, Kokarev Konstantin   +3 more
doaj   +1 more source

The Evolution of Landscape Patterns and Its Ecological Effects of Open-Pit Mining: A Case Study in the Heidaigou Mining Area, China. [PDF]

Int J Environ Res Public Health, 2023
Zhao Y, Wang Y, Zhang Z, Zhou Y, Huang H, Chang M.   +5 more
europepmc   +1 more source

Modelling and 3D Visualisation of Landscape Changes in the Rosia Montana Basin [PDF]

The town of Rosia Montana is located above one of the largest gold and other precious metal deposits in Europe. Gold and silver have been mined for centuries here, even as early as pre-roman times.
Gábor Barton, Katalin Bódis, Róbert Géczi   +2 more
core  

Engineering Biochar‐Derived Functional Materials for High‐Performance Supercapacitors: Design Principles, Mechanisms, and Scalable Strategies

Carbon Energy, EarlyView.
ABSTRACT Biochar has emerged as a useful and adaptable source of carbon for supercapacitor electrodes. Its value comes from the way biomass chemistry, thermal conversion, and activation conditions shape the resulting pore network, surface groups, and degree of carbon ordering.
Soumen Mandal, Avinash C. Mendhe, Mayna Roy, Neha S. Barse, Taejoon Park, Han‐Seung Lee, Haigun Lee   +6 more
wiley   +1 more source

Hazard Classification and Stability Analysis of High and Steep Slopes from Underground to Open-Pit Mining. [PDF]

Int J Environ Res Public Health, 2022
Li S, Zhao Z, Hu B, Yin T, Chen G, Chen G.   +5 more
europepmc   +1 more source

The Fontao’s mine [PDF]

, 2002
[Abstract] The Fontao Mine (Vila de Cruces) was exploited from 1934 to 1973, having a little period without activity (1963-1968) in wich underground mining was changed to open pit. L a t e r , the mine has remained closed.
Orche, E.
core   +1 more source

Characterization of a two‐phase hybrid flotation column

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract This study explored the performance of a novel hybrid flotation column, which combines the advantages of a mechanically agitated cell with a flotation column and compared the results with a conventional flotation column setup. The experiments were performed in an air/water two‐phase system under varying airflow rates, frother concentrations ...
Pedro Silva Aires, Artin Afacan, Qi Liu, Vinay Prasad   +3 more
wiley   +1 more source

Technological innovation and engineering practice of damage reduction mining and ecosystem restoration in open-pit coal mine

Global Sustainability
Non-technical summary To address the issues of declining groundwater levels and the degradation of soil ecological functions caused by open-pit coal mining in China.
Quansheng Li, Xiaobin Li
doaj   +1 more source