We investigated the changes in plasma sex steroid hormones, testosterone (T), estradiol-17β (E2), 17,20β -dihydroxy-4-pregnen-3-one (17α20βP), 11-ketotestosterone (11KT) and cortisol levels from ribbed gunnel, Dictyosoma burgeri in associated with annual reproductive cycle. The gonadosomatic index (GSI) of females increased from November, peaked in February and decreased rapidly from March. The...

We present a theory for the coupled flow of ice, subglacial water and subglacial sediment, which is designed to represent the processes which occur at the bed of an ice sheet. The ice is assumed to flow as a Newtonian viscous fluid, the water can flow between the till and the ice as a thin film, which may thicken to form streams or cavities, and the till is assumed to be transported, either thr...

Abstract This research proposed the modular prefabricated permanent formwork system made of ultra-high-performance concrete (UHPC). Two kinds shapes were designed: flat and ribbed. The experimental investigation on axial compression performance composite columns that consist normal strength (NSC) core UHPC was demonstrated. Compared with formwork, ribbed exhibited better bonding NSC core. As ob...

Ribbed reinforcing steel bars (rebars) are used for the reinforcement of concrete structures. In service, they subjected to cyclic loading. Several studies addressing relationship between rib geometry, stresses at rebar surface induced by service loads and fatigue performance can be found in literature. However, rebar’s is also influenced residual originating from manufacturing process. this co...

An adult of a Ribbed Cocoon Maker Moth (Bucculatricidae) from Eocene Baltic amber is described as a new species (Bucculatrix rycki). This is the first description of a fossil adult of this microlepidopteran family, but previous evidence for this family comes from typical leaf mines in fossil leaves that provide evidence dating to the Upper Cretaceous. The minimal geological age for this adult s...