Results 51 to 60 of about 1,082 (176)
Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight
Experimental Physiology, EarlyView.Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley +1 more source
Self-loosening behavior of bolt in curvic coupling due to materials ratcheting at thread root
Advances in Mechanical Engineering, 2019 This article presents the bolt self-loosening mechanism in curvic coupling due to the structural ratcheting under cyclic loading. Finite element simulations are carried out under several loading conditions with different preloads and cyclic torque ...
Xiangjun Jiang +3 more
doaj +1 more source
The evolutionary origins of streptophyte multicellularity
New Phytologist, Volume 251, Issue 5, Page 2365-2383, September 2026.The phylogeny of streptophytes and the deep origin of branching filamentous growth. Summary Over their more than 1 billion years of evolutionary history, streptophytes have repeatedly transitioned between unicellular, simple multicellular and complex multicellular forms.
Tatyana Darienko +10 more
wiley +1 more source
Scottish Journal of Political Economy, Volume 73, Issue 4, September 2026.ABSTRACT This study considers consumers' environmental awareness of polluting firms' managerial delegation contracts and compares the effects of committed and time‐consistent emission tax policies. It reveals that when environmental performance (EP) incentives prevail, sales performance (SP) incentives depend on the emission tax type and competition ...
Lili Xu, Yuntong Yin, Sang‐Ho Lee
wiley +1 more source
Applied SciencesThe present study intends to assess the ratcheting response of SA508 and SA333 steel alloys subjected to asymmetric loading cycles at various operating temperatures of 298, 573, and 623K through a hardening framework developed by Ahmadzadeh–Varvani (A-V)
M. Karimi, A. Varvani-Farahani
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On the Assembly of Actin Polymerization‐Powered Motors
Macromolecular Rapid Communications, Volume 47, Issue 15, 4 August 2026.Actin polymerization‐powered motors have the highest speed when the actin recruiting‐polymerizing proteins are immobilized in polymer brushes on their surface. These motors orbit around larger tracer particles at pH above the isoelectric point of ActA but dock onto the tracer particles’ surface at lower pH. ABSTRACT Nano‐ and micromotors are a class of
Miguel A. Ramos Docampo +2 more
wiley +1 more source
Modeling Biocemented Sands: Hypoplastic Model for MICP‐Based Ground Improvement
International Journal for Numerical and Analytical Methods in Geomechanics, Volume 50, Issue 12, Page 4893-4912, 25 August 2026.ABSTRACT Bio‐cementation offers a sustainable and low‐carbon alternative to conventional ground improvement methods, aligning with the growing demand for green geotechnical solutions. To enable reliable numerical simulation of bio‐cemented soil behavior in engineering applications, advanced constitutive models are required to account for the effects of
Merita Tafili +3 more
wiley +1 more source
Molecular Microbiology, Volume 126, Issue 2, Page 190-207, August 2026.Here, we demonstrate that polysaccharide chain length regulation plays a distinct role in enabling formation of a cyclic molecule important for the bacterial cell surface. However, this function is necessary, but not sufficient for the cyclic molecule's biosynthesis.
Joseph F. Carr +4 more
wiley +1 more source
Mechanical Engineering Journal, 2017 The prevention of excessive deformation by thermal ratcheting is important in the design of high-temperature components of fast breeder reactors (FBR). In an experimental study that simulated a fast breeder reactor vessel near the coolant surface, it was
Satoshi OKAJIMA +2 more
doaj +1 more source
Fatigue Damage of Al/SiC Composites - Macroscopic and Microscopic Analysis
Archives of Metallurgy and Materials, 2015 The results of comparative examinations of mechanical behaviour during fatigue loads and microstructure assessment before and after fatigue tests were presented. Composites of aluminium matrix and SiC reinforcement manufactured using the KoBo method were
Rutecka A. +4 more
doaj +1 more source