Results 111 to 120 of about 278 (165)
Denning Phenology Mediates Sea‐Ice Loss Impacts on Early Reproductive Success in Polar Bears
Global Change Biology, Volume 32, Issue 8, August 2026.Changes in overwinter sheltering phenology in response to climate change and their fitness consequences have rarely been studied. Here, we show that climate change has disrupted the phenology of overwinter maternity denning in polar bears, with females emerging from den earlier when sea‐ice had been scarce the preceding year.
Marwan Naciri +6 more
wiley +1 more source
Micropollutants and the Restructuring of Microbial Resilience in the Anthropocene
Global Change Biology, Volume 32, Issue 8, August 2026.Conceptual framework linking anthropogenic chemical complexity to the restructuring of microbial resilience in the Anthropocene. Persistent, low‐dose chemical mixtures can reorganize microbial coordination networks, regulatory and metabolic processes, and ecological memory, thereby altering functional redundancy, adaptive capacity, and disturbance ...
Despo Fatta‐Kassinos +3 more
wiley +1 more source
Lower bounds for cube‐ideal set‐systems
Proceedings of the London Mathematical Society, Volume 133, Issue 2, August 2026.Abstract A set‐system S⊆{0,1}n$S\subseteq \lbrace 0,1\rbrace ^n$ is cube‐ideal if its convex hull can be described by capacity and generalized set covering inequalities. In this paper, we use combinatorics, convex geometry, and polyhedral theory to give exponential lower bounds on the size of cube‐ideal set‐systems, and linear lower bounds on their ...
Ahmad Abdi +3 more
wiley +1 more source
ANALYSIS OF STIRLING CYCLE CRYOCOOLER
International Journal of Advance Engineering and Research Development, 2015 openaire +1 more source
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Technological development in the Stirling cycle engines
Renewable and Sustainable Energy Reviews, 2008The performance of Stirling engines meets the demands of the efficient use of energy and environmental security and therefore they are the subject of much current interest. Hence, the development and investigation of Stirling engine have come to the attention of many scientific institutes and commercial companies.
S K Verma
exaly +2 more sources
Miniature stirling cycle cooler
Cryogenics, 1987Abstract A miniature split Stirling cycle refrigerator, providing over 1 W of cooling power at 80 K is described. It is an unlubricated wear-free machine with long operating life, high reliability and high efficiency.
G. Davey, A.H. Orlowska
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2022
This thesis was scanned from the print manuscript for digital preservation and is copyright the author. Researchers can access this thesis by asking their local university, institution or public library to make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
openaire +1 more source
This thesis was scanned from the print manuscript for digital preservation and is copyright the author. Researchers can access this thesis by asking their local university, institution or public library to make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
openaire +1 more source
The Stirling cycle and Carnot’s theorem
European Journal of Physics, 2019Abstract Carnot’s theorem is often misunderstood and not well known in its various forms. When comprehended correctly in its ‘strong form’ Carnot’s theorem precludes any other reversible cycle from matching the efficiency of a Carnot cycle when operating clockwise between the same two temperature extremes.
Robert H Dickerson, Jochen Mottmann
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Thermodynamic analysis of the Stirling cycle
Cryogenics, 1988Abstract The thermodynamic analysis of the Stirling cycle presented here accounts for the effects of two important design parameters, namely dead space and imperfect regeneration. The definition of the refrigerating efficiency introduced here ensures a fruitful comparison of cycle performance with dead volume and without dead volume.
TAILOR, PR, NARAYANKHEDKAR, KG
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SAE Technical Paper Series, 1963
<div class="htmlview paragraph">The history of the Stirling engine is briefly reviewed, together with the theory of the engine, and the Stirling cycle. The Stirling and Carnot cycles are compared. The Stirling engine and its operation are discussed, and several recommendations are made, among which: the output work would be increased by ...
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<div class="htmlview paragraph">The history of the Stirling engine is briefly reviewed, together with the theory of the engine, and the Stirling cycle. The Stirling and Carnot cycles are compared. The Stirling engine and its operation are discussed, and several recommendations are made, among which: the output work would be increased by ...
openaire +1 more source