Results 31 to 40 of about 33,738 (312)
Mating patterns and reversed size dimorphism in southern skuas (Stercorarius skua lonnbergi) [PDF]
Numerous explanations exist for the evolution of reversed size dimorphism in raptorial species. A recent study concluded that reversed size dimorphism in skuas and jaegers was probably not attributable to breeding-role specialization, but that there was ...
Sandberg, Roland +48 more
core +1 more source
SIMULATION OF THE AUTOMATIC CLUTCH CONTROL SYSTEM [PDF]
The analysis of the provisions of the working processes simulation modeling in the vehicle transmission is performed. The mathematical models of transmission of momentum that arises in the engine with the dependencies characterizing the process of motion
V. Klimenko +4 more
doaj
Can sexual selection drive female life histories? A comparative study on Galliform birds [PDF]
Sexual selection has been identified as a major evolutionary force shaping male life history traits but its impact on female life history evolution is less clear.
A. Ø. Mooers +14 more
core +1 more source
CAUSES OF DAMAGES OF PUMP-COMPRESSOR PIPE CLUTCHES
Background. The object of research is the clutch of pump-compressor pipes (tubing). The subject of the study is metallographic studies of the areas of crack origin in the metal of clutches. The purpose of this work is to determine the causes of damages
V. M. Kushnarenko +3 more
doaj +1 more source
THE EVOLUTION OF CLUTCH SIZE. I. AN EQUATION FOR PREDICTING CLUTCH SIZE [PDF]
We derive an equation for calculating the clutch sizes of birds and other long-lived animals from Murray's (1979) theory on the evolution of clutch size. For the Prairie Warbler (Dendroica discolor) in Indiana, this equation predicts an average clutch size of 3.49, less than half an egg smaller than the recorded average clutch size of 3.89.
Bertram G, Murray, Val, Nolan
openaire +2 more sources
Simulation design of automobile automatic clutch based on mechatronics
This article aims to study the simulation and design of automobile automatic clutch under mechatronics. A new control strategy for the automatic clutch of the electromagnetic transmission is proposed.
Chen Chao +2 more
doaj +1 more source
ABSTRACT Background Sickle cell disease (SCD) is a chronic, inherited hemoglobinopathy that requires frequent hospitalization for disease‐related complications. Canadian data on inpatient care is limited. This study compared caregiver‐reported hospital experiences of children with SCD to those with cystic fibrosis (CF), a chronic, autosomal recessive ...
Hailey M. Zwicker +11 more
wiley +1 more source
A fixed energetic ceiling to parental effort in the great tit? [PDF]
1. To elucidate the links between avian brood size, parental effort and parental investment, we measured daily energy expenditure (DEEfem), condition (residuals of mass on tarsus) and feeding rate in female great tits Parus major L.
Verhulst, S.; id_orcid +6 more
core +1 more source
ABSTRACT Background Osteosarcoma (OS) and Ewing sarcoma (EWS) are the most common primary bone cancers in children, but acute thrombosis is poorly characterized in this population. Our study evaluated the rates of venous thromboembolism (VTE) and associated risk factors in pediatric patients with bone sarcomas treated over a 10‐year period encompassing
Sarah Kappa +8 more
wiley +1 more source

