Temperature Gradient in the Unfrozen Liquid Layer for Multiphase Energy Balance With Incoming Droplets

2003 ◽  
Vol 125 (1) ◽  
pp. 186-189 ◽  
Author(s):  
G. F. Naterer
Keyword(s):  
Energy Balance ◽  
Water Layer ◽  
Surface Heat ◽  
Unfrozen Water ◽  
Temperature Variations ◽  
Proper Role ◽  
Ice Surface ◽  
Water Layers ◽  
Phase Change Heat Transfer

Phase change heat transfer with impinging supercooled droplets on an ice surface is examined. Partial solidification of incoming droplets leads to an unfrozen water layer above the ice. The significance of temperature variations within the water layer is considered. The multiphase energy balance is shown to approach the measured rate of ice growth when the surface heat input is lowered sufficiently. This asymptotic behavior is essential for establishing the proper role of heat conduction in the solid and liquid (unfrozen water) layers. Predicted results are successfully validated by comparisons with experimental data involving ice buildup on heated circular conductors.

Influence of Magnetic Fields on Solar Hydrodynamics: Experimental Results

1977 ◽  
Vol 36 ◽  
pp. 143-180 ◽  
Author(s):  
J.O. Stenflo
Keyword(s):  
Solar Activity ◽  
Energy Balance ◽  
Magnetic Fields ◽  
Solar Atmosphere ◽  
General Problem ◽  
Solar Rotation ◽  
Active Regions ◽  
Physical Conditions ◽  
Dynamic Phenomena

It is well-known that solar activity is basically caused by the Interaction of magnetic fields with convection and solar rotation, resulting in a great variety of dynamic phenomena, like flares, surges, sunspots, prominences, etc. Many conferences have been devoted to solar activity, including the role of magnetic fields. Similar attention has not been paid to the role of magnetic fields for the overall dynamics and energy balance of the solar atmosphere, related to the general problem of chromospheric and coronal heating. To penetrate this problem we have to focus our attention more on the physical conditions in the ‘quiet’ regions than on the conspicuous phenomena in active regions.

Ghrelin and Obesity-An Update

2017 ◽  
Vol 9 (1) ◽  
Author(s):  
Gandhi M. ◽  
Swaminathan S.
Keyword(s):  
Diabetes Mellitus ◽  
Cardiac Output ◽  
Energy Balance ◽  
Vascular Resistance ◽  
The Body ◽  
Ghrelin Receptor ◽  
Type2 Diabetes ◽  
Type2 Diabetes Mellitus ◽  
Natural Hormones

Ghrelin as human natural hormones is involved in fundamental regulatory process of eating and energy balance. It is a stomach derived hormone that acts as at the ghrelin receptor in multiple tissues throughout to the body. Its properties includes increasing appetite, decreasing systemic inflammation, decreasing vascular resistance ,increasing cardiac output, increasing glucose and IGF-1 levels, Hence it may play a significant role in Diabetes mellitus. Many studies have linked ghrelin to obesity and this paper is an attempt to bring out recent findings on the role of ghrelin in Diabetes Mellitus, particularly type2 Diabetes mellitus.

Role of ghrelin in the regulation of energy balance in adult male albino rats

2020 ◽  
Vol 33 (1) ◽  
pp. 30-38
Author(s):  
Naglaa Y. Nafeh ◽  
Mona A. Said
Keyword(s):  
Energy Balance ◽  
Adult Male ◽  
Albino Rats

Intellectual Property Rights and Access to Energy Services in Africa

2018 ◽  
Author(s):  
Professor Adebambo Adewopo ◽  
Dr Tobias Schonwetter ◽  
Helen Chuma-Okoro
Keyword(s):  
Intellectual Property ◽  
Property Rights ◽  
Intellectual Property Rights ◽  
Energy Access ◽  
African Countries ◽  
Energy Services ◽  
Proper Role ◽  
The Law

This chapter examines the proper role of intellectual property rights (IPRs) in achieving access to modern energy services in Africa as part of a broader objective of a pro-development intellectual property agenda for African countries. It discusses the role of intellectual property rights, particularly patents, in consonance with pertinent development questions in Africa connected with the implementation of intellectual property standards, which do not wholly assume that innovation in Africa is dependent on strong intellectual property systems. The chapter examines how existing intellectual property legal landscapes in Africa enhance or impede access to modern energy, and how the law can be directed towards improved energy access in African countries. While suggesting that IPRs could serve an important role in achieving modern energy access, the chapter calls for circumspection in applying IP laws in order not to inhibit access to useful technologies for achieving access to modern energy services.

scholarly journals The role of radiolysis in the modelling of C2H4O2 isomers and dimethyl ether in cold dark clouds

2020 ◽  
Vol 500 (3) ◽  
pp. 3414-3424
Author(s):  
Alec Paulive ◽  
Christopher N Shingledecker ◽  
Eric Herbst
Keyword(s):  
Gas Phase ◽  
Dimethyl Ether ◽  
Recent Observation ◽  
Cosmic Ray ◽  
Thermal Method ◽  
Dark Clouds ◽  
Ice Surface ◽  
Dust Grain ◽  
Complex Organic

ABSTRACT Complex organic molecules (COMs) have been detected in a variety of interstellar sources. The abundances of these COMs in warming sources can be explained by syntheses linked to increasing temperatures and densities, allowing quasi-thermal chemical reactions to occur rapidly enough to produce observable amounts of COMs, both in the gas phase, and upon dust grain ice mantles. The COMs produced on grains then become gaseous as the temperature increases sufficiently to allow their thermal desorption. The recent observation of gaseous COMs in cold sources has not been fully explained by these gas-phase and dust grain production routes. Radiolysis chemistry is a possible non-thermal method of producing COMs in cold dark clouds. This new method greatly increases the modelled abundance of selected COMs upon the ice surface and within the ice mantle due to excitation and ionization events from cosmic ray bombardment. We examine the effect of radiolysis on three C2H4O2 isomers – methyl formate (HCOOCH3), glycolaldehyde (HCOCH2OH), and acetic acid (CH3COOH) – and a chemically similar molecule, dimethyl ether (CH3OCH3), in cold dark clouds. We then compare our modelled gaseous abundances with observed abundances in TMC-1, L1689B, and B1-b.

scholarly journals A militant defence of democracy: A few replies to my critics

2020 ◽  
pp. 019145372097472
Author(s):  
Cristina Lafont
Keyword(s):  
Deliberative Democracy ◽  
Special Issue ◽  
The Core ◽  
Difficult Question ◽  
Proper Role

In this essay, I address some questions and challenges brought about by the contributors to this special issue on my book ‘ Democracy without Shortcuts’. First, I clarify different aspects of my critique of deep pluralist conceptions of democracy to highlight the core incompatibilities with the participatory conception of deliberative democracy that I defend in the book. Second, I distinguish different senses of the concept of ‘blind deference’ that I use in the book to clarify several aspects and consequences of my critique of epistocratic conceptions of democracy and their search for ‘expertocratic shortcuts’. This in turn helps me briefly address the difficult question of the proper role of experts in a democracy. Third, I address potential uses of empowered minipublics that I did not discuss in the book and highlight some reasons to worry about their lack of accountability. This discussion in turn leads me to address the difficult question of which institutions are best suited to represent the transgenerational collective people who are supposed to own a constitutional project. Finally, I address some interesting suggestions for how to move the book’s project forward.

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