In this study, we have developed a propulsion mechanism using a fin with variable effective length spring as variable stiffness mechanics.We measured its thrust and the lateral forces in water tank with three dimensional flow and that with quasi two dimensional environment.Additionally, three dimensional numerical analysis of the propulsion mechani
Abstract Background Egg size represents an important form of maternal effect determined by a complex interplay of long-term adaptation and short-term plasticity balancing egg size with brood size.Haplochromine cichlids are maternal mouthbrooders showing differential parental investment in different species, manifested in great variation in egg size
Three plastered skulls, dating to the Pre-Pottery Neolithic B, were found at the site of Yiftahel, in the Lower Galilee (Israel).The skulls underwent refitting and restoration processes, details of which are st albans alpaca scarf described herein.All three belong to adults, of which two appear to be males and one appears to be a female.Virtual cro
Abstract Exploration in the way of understanding the optical behavior and structure of carbon nanodots has been increased due to their vast application.Their emission dependency on excitation wavelengths is the more prevalent and controversial subject.In this report we considered the optical structure of hydrothermally synthesized carbon nanodots u