Results 121 to 130 of about 335,851 (308)

Noninvasive Glucose Detection with Biodegradable Electrodes from Rice Starch Functionalized with a Carbon Quantum Dot/Nickel Oxide Nanocomposite

open access: yesAnalysis &Sensing, EarlyView.
The graphical abstract shows an eco‐friendly approach to fabricating a biodegradable electrochemical sensor. Carbon quantum dot/nickel oxide (CQD/NiO) nanocomposites are synthesized using Aloe arborescens leaf extract, which served as a natural reducing and stabilizing agent.
Nokwanda Ngema   +3 more
wiley   +1 more source

Regional price targets appropriate for advanced coal extraction [PDF]

open access: yes
A methodology is presented for predicting coal prices in regional markets for the target time frames 1985 and 2000 that could subsequently be used to guide the development of an advanced coal extraction system.
Terasawa, K. L., Whipple, D. M.
core   +1 more source

Scale of Collieries and their Top-Level Management Capability in the Polish Coal Mining Industry: Recent Results [PDF]

open access: yes, 1979
In this paper the following topics are considered: retrospective research into the effect of coal mine scale on its effectiveness; research results on the effect of the "system size" (coal mine) on the top-level management capability; and problem ...
Bendkowski, J.   +2 more
core  

A Review on Magnesium Based Metal Hydrides for Thermal Energy Storage Systems

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT The hydrogen storage in metal hydrides is an imminent, innovative, and environmentally beneficial approach that offers benefits for example, an ample amount of storage and elasticity in terms of thermodynamics necessary for hydrogen absorption and release.
Asif Nizam   +3 more
wiley   +1 more source

Nucleonic coal detector with independent, hydropneumatic suspension [PDF]

open access: yes
The design of a nucleonic, coal interface detector which measures the depth of coal on the roof and floor of a coal mine is presented. The nucleonic source and the nucleonic detector are on independent hydropneumatic suspensions to reduce the measurement
Handy, K., Jones, E. W.
core   +1 more source

Current state-of-the-art in drying low-rank coals [PDF]

open access: yes, 1976
Preparing Alaska's coal for marketing -- Drying low-rank coals -- Effect of lignite source -- Acknowledgement -- References.Research on drying of low-rank coals, such as lignites and subbituminous coals, has been conducted for nearly half a century ...
Rao, P.D. and Wolff, E.N.
core  

Design and Performance Analysis of a Thermal Energy Storage System With Steam Extraction and Electric Heating in a Coal‐Fired Power Plant

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT To alleviate the impact of the instability of renewable energy power generation on the power grid, coal‐fired power plants (CFPPs) have to undertake peak shaving tasks, which puts forward high requirements for the flexibility of CFPPs. To enhance the flexibility of CFPPs to consume more renewable energy, this paper innovatively proposes a ...
Yuguo Ni, Keliang Liu, Miao Yu, Hao Zhou
wiley   +1 more source

Adsorption Desulfurization of Liquid Fuel Using a Blend of Date Stones and Walnut Shells by Box–Behnken Design

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT A specific microporous KOH/activated‐biochar (K/BC) was produced from a blend of date stones (DS) and walnut shells (WS) and used in the adsorptive desulfurization (ADS) of two types of model fuel DBT/n‐hexane (S‐hex), DBT/cyclohexane (S‐cyclohex).
Ameen L. Alyawer   +4 more
wiley   +1 more source

COAL MINING [PDF]

open access: yesThe Developing Economies, 1979
openaire   +1 more source

Characteristics and Fertility Status of Soils and Minesoils in Selected Areas of Usibelli Coal Mine, Healy, Alaska [PDF]

open access: yes, 1989
Alaska has been proven to contain not only bountiful oil and gas reserves. but also vast coal fields occurring from the southcentral coastline to the Interior and the Arctic zone to the north.
Kaija, Kevin J., Ping, Chien-Lu
core  

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