The role of energy

It aims to evaluate the causal impacts of strategic management practices, investigate the mediating roles of innovation capabilities and operational efficiency, and provide actionable insights to foster sustainable business models and green economic growth in Vietnam’s renewable energy enterprises.

10p viaburame 14-03-2025 1 0   Download

The materials with a spinel structure have gotten some attention for their resistance to oxidizing/reducing agents and their application in many fields such as pigments, refractory, electronic engineering, magnetism, and energy storage materials.

8p vifilm 11-10-2024 2 1   Download

Since the early days, natural products have played a significant role in drug discovery and development. However, the extraction process of these compounds often includes many complex steps, consumes a lot of energy and a large volume of solvents, which can have a significant impact on the environment as well as human health. Therefore, it is necessary to find better ways to improve the yield of extraction, while minimizing risks that may affect the environment and humans.

15p vihyuga 04-03-2025 4 1   Download

This study examines the impact of alternative energy resources, natural resources, and government spending on Vietnam's ecological sustainability from 1990 to 2021, using the environmental Kuznets curve (EKC) framework. Employing all the public recognized data from World Bank, our findings reveal an inverse relationship between carbon dioxide (CO2) emissions and renewable and nuclear energy use, natural resources, and government expenditure.

11p tuetuebinhan000 23-01-2025 2 1   Download

This study examines the impact of alternative energy resources, natural resources, and government spending on France's ecological sustainability from 2000 to 2021, emphasizing the Environmental Kuznets Curve (EKC) framework and the theory of linear regression models. The findings reveal an inverse relationship between CO2 emissions and renewable energy and nuclear share on both total energy supply and final consumption.

11p tuetuebinhan000 23-01-2025 2 1   Download

I. Introduction An important aspect of nuclear reactor core analysis involves the determination of the optimal coolant flow distribution and pressure drop across the reactor core. On the one hand, higher coolant flow rates will lead to better heat transfer coefficients and higher Critical Heat Flux (CHF) limits. On the other hand, higher flows rates will also in large pressure drops across the reactor core, hence larger required pumping powers and larger dynamic loads on the core components.

259p giotletinh_hd2009 20-04-2013 94 19   Download

Among the technological processes that require significant energy consumption, a significant role is played by the heating processes carried out by electric infrared heaters.

8p lucastanguyen 01-06-2020 20 2   Download

The study reflects as how on one hand the needs of market has to be catered and on the other, consumer interest has to be protected by the regulator. The study encompasses an overview of the Indian energy sector.

15p guineverehuynh 21-06-2020 15 2   Download

This paper describes the preparation, optical properties and the role of the concentration of rare earth ions (RE: Eu, Er, Tb, Yb) as active centers in the energy transfer of Y2O3: RE nanophosphors. The materials are prepared by the combustion method using urea or glycine. Nanoparticles can be prepared with sizes ranging from 5 to 100 nm and can be estimated by high resolution TEM. Optimization of Eu and Er content in these nanophosphors was reported. The effect of energy transfer between Tb and Eu and the up-conversion between Er and Yb were studied.

8p 12120609 01-06-2020 19 1   Download

Today, nuclear power produces 11% of the world’s electricity. Nuclear power plants produce virtually no greenhouse gases or air pollutants during their operation. Emissions over their entire life cycle are very low.

8p christabelhuynh 29-05-2020 10 2   Download

The design of b-glycosidases with planed substrate specificity for biotechnological application has received little attention. This is mostly a consequence of the lack of data on the molecular basis of the b-glycosidase specificity, namely data on the energy of the noncovalent interactions in the enzymetransition state complex. In an attempt to fill this gap, sitedirected mutagenesis and enzyme steady-state kinetic experiments with different substrates were conducted, using as model a digestive b-glycosidase (glycoside hydrolase family 1) from Spodoptera frugiperda (Lepidoptera) (Sfbgly50).

10p system191 01-06-2013 47 4   Download

Department of Medical Biochemistry and Biology, University of Bari, Italy; 2Department of Zoology, Laboratory of Histology and Comparative Anatomy, University of Bari, Italy; 3Center for the Study of Mitochondria and Energy Metabolism (CNR) Bari, Italy Mitochondrial bioenergetic impairment has been found in the organelles isolated from rat liver during the prereplicative phase of liver regeneration.

9p system191 01-06-2013 37 4   Download

Mikrobiologisches Institut der Eidgeno¨ssischen Technischen Hochschule, ETH-Zentrum, Zu¨rich, Switzerland The membrane-bound b subunit of the oxaloacetate decarboxylase Na+ pump of Klebsiella pneumoniae catalyzes the decarboxylation of enzyme-bound biotin. This event is coupled to the transport of 2 Na+ ions into the periplasm and consumes a periplasmically derived proton. The connecting fragment IIIa and transmembrane helices IV and VIII of the b subunit are highly conserved, harboring residues D203, Y229, N373, G377, S382, and R389 that play a profound role in catalysis. ...

8p system191 01-06-2013 40 4   Download

Uncoupling protein-3 (UCP3) is a mitochondrial innermembrane protein abundantly expressed in rodent and human skeletal muscle which may be involved in energy dissipation. Many studies have been performed on the metabolic regulation of UCP3 mRNA level, but little is known about UCP3 expression at the protein level. Two populations of mitochondria have been described in skeletal muscle, subsarcolemmal (SS) and intermyofibrillar (IMF), which differ in their intracellular localization and possibly also their metabolic role....

7p system191 01-06-2013 36 4   Download

In an effort to explore the role of glycine clusters on the cold adaptation of enzymes, we designed point mutations aiming to alter the distribution of glycine residues close to the active site of the psychrophilic alkaline phosphatase from the Antarctic strain TAB5. The mutagenesis targets were residues Gly261 and Gly262. The replacement of Gly262 by Ala resulted in an inactive enzyme. Substitution of Gly261 by Ala resulted to an enzyme with lower stability and increased energy of activation.

6p research12 01-06-2013 41 5   Download

Na + /K + -ATPase as an energy transducing ion pump has beenstudiedextensivelysince itsdiscovery in1957.Although early findings suggested a role for Na + /K + -ATPase in regulation of cell growth and expression of various genes, only in recent years the mechanisms through which this plasma membrane enzyme communicates with the nucleus have been studied.

6p research12 29-04-2013 34 4   Download

Heterodisul®de reductase (Hdr) is a unique disul®de reduc-tase that plays a key role in the energy metabolism of methanogenic archaea. The genome of the sulfate-reducing archaeonArchaeoglobus fulgidusencodes several proteins of unknown function with high sequence similarity to the catalytic subunit of Hdr. Here we report on the puri®cation of a multisubunit membrane-bound enzyme complex from A.

10p research12 23-04-2013 47 2   Download

Adaptations of the kinetic properties of mitochondria in striated muscle lacking cytosolic (M) and⁄or mitochondrial (Mi) creatine kinase (CK) iso-forms in comparison to wild-type (WT) were investigated in vitro. Intact mitochondria were isolated from heart and gastrocnemius muscle of WT and single- and double CK-knock-out mice strains (cytosolic (M-CK –⁄ – ), mitochondrial (Mi-CK –⁄ – ) and double knock-out (MiM-CK –⁄ – ), respect-ively).

10p awards 05-04-2013 41 5   Download

NA helicases are ubiquitous molecular motor proteins which harness the chemical free energy of ATPhydrolysis to catalyze the unwinding of energetically stable duplex DNA, and thus play important roles in nearly all aspects of nucleic acid metabolism, including replication, repair, recombina-tion, and transcription. They break the hydrogen bonds between the duplex helix and move unidirectionally along the bound strand. All helicases are also translocases and DNA-dependentATPases.Most contain conserved helicase motifs that act as an engine to power DNA unwinding. ...

14p dell39 03-04-2013 40 5   Download

Heterodisulfide reductase (Hdr) is a unique disulfide reduc-tase that plays a key role in the energy metabolism of methanogenic archaea. Two types of Hdr have been identi-fied and characterized from distantly related methanogens. Here we show that the sulfate-reducing archaeonArchaeo-globus profunduscultivated on H2/sulfate forms enzymes related toboth typesofHdr.Fromthemembrane fractionof A. profundus, a two-subunit enzyme (HmeCD) composedof ab-type cytochrome and a hydrophilic iron–sulfur protein was isolated. ...

11p dell39 03-04-2013 35 3   Download