Results 71 to 80 of about 209,084 (316)

Life cycle assessment of biodiesel synthesis from waste cooking oil using bifunctional heterogeneous catalyst

open access: yesBiofuels, Bioproducts and Biorefining, EarlyView.
Abstract The development of renewable energy sources is important in order to achieve the United Nations Sustainable Development Goals (SDGs). Waste cooking oil (WCO) is a promising feedstock for biodiesel production through transesterification. Heterogeneous bifunctional catalysts offer a sustainable alternative to conventional homogeneous bases such ...
Frederick Jit Fook Phang   +9 more
wiley   +1 more source

The Effect of Turbine Blade Cooling on the Performance of Recuperative Cycles for Gas Turbines Applications

open access: yesChemical Engineering Transactions, 2017
Nowadays the constantly increasing demand for energy production has a strong impact on the environmental pollution. Therefore, the development of more efficient gas turbines is a key factor for decreasing pollutant emissions.
C. Salpingidou   +5 more
doaj   +1 more source

Influence of Zn2+ and Oxygen Supply on Malic Acid Production and Growth of Aspergillus oryzae

open access: yesBiotechnology and Bioengineering, EarlyView.
ABSTRACT Malic acid is a valuable platform chemical traditionally derived from fossil‐based resources. Microbial cultivation with Aspergillus oryzae offers a sustainable alternative based on renewable feedstocks. In this study, a well‐established minimal medium for malic acid production, commonly used in previous research to ensure reproducibility, was
Lukas Hartmann   +3 more
wiley   +1 more source

APPLICATION OF THERMOCHEMICAL WASTE HEAT RECOVERY IN POWER PLANTS OF HIGH-TECH SHIPS

open access: yesАвіаційно-космічна техніка та технологія, 2019
The research’s subject is the processes of energy transformation of fuel in the ship power plant with thermo-chemical waste heat recovery. Modern approaches to assessing the energy efficiency of ship power plants were considered.
Александр Константинович Чередниченко
doaj   +1 more source

Evaluation of a high performance, fixed-ratio, traction drive [PDF]

open access: yes, 1983
A test program was initiated to evaluate the key operational and performance factors associated with the Nasvytis multiroller concept. Two sets of Nasvytis drives, each of slightly geometry, were parametrically tested on a back to back test stand ...
Anderson, N. E.   +2 more
core   +1 more source

Raman Spectroscopy–Based Glucose Feed Control Automates Malic Acid Fermentation

open access: yesBiotechnology and Bioengineering, EarlyView.
Raman spectroscopy enables automated, closed‐loop glucose feeding for malic acid production with Ustilago trichophora. Online PLS regression of glucose and malic acid provides input for PID control to maintain 20 g/L glucose. The feed is dynamically adjusted and stopped in response to metabolic demand and product inhibition, demonstrating practical ...
Luca Antonia Grebe   +8 more
wiley   +1 more source

OPTIMIZATION OF DIAGRAMS ON USAGE OF POTENTIAL FUEL-GAS ENERGY OF CROSS-COUNTRY PIPE-LINES

open access: yesИзвестия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2005
The paper considers a combined power installation being a part of gas expansion set and thermal engine for gas distribution stations. It is shown that in the case when a steam turbine condensing power plant serves as a substitution station increased ...
A. D. Kachan   +3 more
doaj  

Prediction and optimization of air velocity and gas concentration under control of air flow at outlet of fully mechanized heading [PDF]

open access: yesE3S Web of Conferences, 2019
Aiming at the problem that the traditional ventilation method can not control the wind speed and reduce the gas concentration, and cause the wind speed and gas concentration to exceed the limit, the new method of dynamic regulation of wind turbine outlet
Gong Xiaoyan   +4 more
doaj   +1 more source

An Indicator‐Based Decision Framework for Circular Bioeconomy Transition in the Steel Industry: Integrating Multiphase Learning and Cooperative Game Modelling

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT Despite growing attention to the circular bioeconomy (CBE), the steel industry currently lacks a standardised, sectoral measurement framework to facilitate a low‐carbon transition. In this study, a decision‐support framework for evaluating CBE performance in the steel industry is proposed.
Ali Zamani Babgohari   +2 more
wiley   +1 more source

Artificial Intelligence–Driven and Digital Practices for Circular Business and Finance: Insights for Advancing Hubs for Circularity

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT The emerging concept of Hubs for Circularity (H4Cs) presents an opportunity to create collaborative, self‐sustaining regional industrial ecosystems that drive circular economy transitions at scale. However, the operationalisation of H4Cs faces financial, organisational and data‐driven challenges.
Aditya Tripathi   +3 more
wiley   +1 more source

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