Joints are essential for skeletal form and function, yet their development remains poorly understood. In zebrafish fins, joints form between the bony fin ray segments providing essentially unlimited opportunities to evaluate joint morphogenesis. Mutations in cx43 cause the short segment phenotype of short fin (sof(b123)) mutants, suggesting that direct cell-cell communication may regulate joint...

Radial lines of Ehrenstein patterns induce illusory scintillating lustre in gray disks inserted into the central gaps (scintillating-lustre effect). We report a novel variant of this illusion by replacing the radial lines with white and black radial fins. Both white and gray disks inserted into the central gaps were perceived as scintillating, if the ratio of the black/white fin width were bala...

Comparisons between Hox gene expression patterns in teleost fins and tetrapod limbs are revealing new insights into the developmental mechanisms underlying the evolutionary transition from fin to limb.

This paper presents a comparative approach on the use of different industrial networks configurations and industrial communication protocols. Some aspects, that may influence the right choice of the most indicated protocol for each industrial network configuration, are discussed. It is presented a case study and two configurations networks implementing two industrial communication protocols. Th...

The conservation and management of sharks on a species-specific basis is a pressing need because of the escalating demand for shark fins and the recognition that individual shark species respond differently to exploitation. Difficulties with the identification of many commonly fished sharks and their body parts has resulted in a global dearth of catch and trade information, making reliable asse...

Bamboo sharks (Chiloscyllium plagiosum) are primarily benthic and use their relatively flexible pectoral and pelvic fins to rest on and move about the substrate. We examined the morphology of the pectoral fins and investigated their locomotory function to determine if pectoral fin function during both benthic station-holding and pelagic swimming differs from fin function described previously in...

OBJECTIVE To develop a new polycystic ovary syndrome (PCOS) rat model suitable for exercise intervention. METHOD Thirty six rats were randomly divided into three experimental groups: PCOS rats with high-fat diet (PF, n = 24), PCOS rats with ordinary diet (PO, n = 6), and control rats with ordinary diet (CO, n = 6). Two kinds of PCOS rat model were made by adjustment diet structure and testost...

in this paper, first a sensitivity analysis of parameters affecting the performance of the steam generator is performed. this process includes the pinch temperature difference and the gas velocity (width of the hrsg) as the operating parameter and geometrical parameters (fin’s thickness, fin’s height, number of fins in each inch, tube transverse pitch) for each pressure parts is carried out, an...

Figure 1. Fin osteoblasts derive from late immigrating paraxial mesoderm. (A,B) Adult (90 dpf) sox10:Cre; ubi:switch transgenics showing derivatives in the fin derived from neural crest and sox10 expressing cells. Lateral view of wholemount fin, immunostained to detect mCherry, indicates labelled cells running along the fin rays (A). Superimposing on a brightfield image demonstrates that these ...

The classical theory of locomotion in sharks proposes that shark pectoral fins are oriented to generate lift forces that balance the moment produced by the oscillating heterocercal tail. Accordingly, previous studies of shark locomotion have used fixed-wing aircraft as a model assuming that sharks have similar stability and control mechanisms. However, unlike airplanes, sharks are propelled by ...