this article studied static deflection, natural frequency and nonlinear vibration of a clamped-clamped microbeam under discontinues electrostatic actuation. the electrostatic actuation was induced by applying ac-dc voltage between the microbeam and electrode plate. in contrast to previous works, it was assumed that length of the electrode plate was smaller than that of the microbeam. in additio...

Unburied subsea pipelines under high-temperature conditions tend to relieve their axial compressive stress by forming localised lateral buckles. This phenomenon is traditionally studied the assumption of a specific deflection profile (mode) consisting fixed number lobes. We study thermal buckling as genuinely applying homoclinic (‘flat’) boundary conditions. By not having assume particular mode...

Spatially regulated transcription of the pipe gene in ventral cells of the Drosophila ovary follicle cell epithelium is a key event that specifies progeny embryo dorsal-ventral (DV) polarity. pipe encodes ten putative protein isoforms, all of which exhibit similarity to vertebrate glycosaminoglycan-modifying enzymes. Expression of one of the isoforms, Pipe-ST2, in follicle cells has previously ...

The more frequent mining activities are carried out, the deeper tin on seabed, therefore many ship owners want to increase length of ladder production suction vessels. owner KIP Timah 8 boat will 70 meters, which previously was only 58 meters. paper research response structure before and after being extended, limit strength in pulley area, then ultimate longitudinal due vertical bending moment....

The methodology for testing pipeline steels is suggested on the assumption that destruction of pipes in field oil pipelines by mechanism grooving corrosion simultaneous fulfillment such conditions as occurrence scratches lower generatrix pipe, eventually growing into a channel form groove, emulsion enrichment with oxygen, presence pipe wall metal stressed state, chlorine-ion oil-water required....

A distributed Brillouin fiber sensor has been employed to detect localized pipe-wall buckling in an energy pipe by measuring the longitudinal and hoop strain distributions along the outer surface of the pipe for the first time. The locations of the localized pipe-wall buckling are found and distinguished using their corresponding strain-load data. The formation of the buckling process for the c...

Buried water and gas pipe systems form part of critical infrastructure providing essential services to the community. In many global population centres including in Australia, this vital infrastructure has been installed several decades ago, and dealing with frequent pipe failures become a major problem. There are clear evidences that pipe failures significantly depend on pipe strains induced b...