BACKGROUND To estimate the prevalence of shaking and smothering and to determine risk factors in a population-based sample of mothers with 4-month-old infants in Japan. METHODS We administered a questionnaire to women who participated in a 4-month health checkup program in Aichi Prefecture, Japan (n = 6487; valid response rate, 66.8%), and assessed frequency of shaking and smothering during t...

BACKGROUND Biotechnological development in shake flask necessitates vital engineering parameters e.g. volumetric power input, mixing time, gas liquid mass transfer coefficient, hydromechanical stress and effective shear rate. Determination and optimization of these parameters through experiments are labor-intensive and time-consuming. Computational Fluid Dynamics (CFD) provides the ability to p...

Flame structures found in sedimentary rocks may have formed from liquefaction and gravitational instability when the sediments were still unconsolidated and were subject to shaking caused by earthquakes. However, the details of the process that leads to the formation of the flame structure, and the conditions required for the instability to initiate and grow remain unclear. Here, we conduct a s...

A simple device for characterisation of the tribo-charging propensity of powders has been developed at the University of Leeds, where a small amount of powder is placed inside a 10 ml container, which is shaken by reciprocal strokes in a horizontal direction. Several containers with different materials have been made: stainless steel, polytetrafluoroethylene (PTFE) and glass. The charge on the ...

Large earthquake ruptures on or near the plate boundary megathrust fault offshore of northeastern Honshu, Japan, produce variable levels of regional highfrequency ground shaking. Analyses of 0.1–10 Hz strong ground motion recordings from K-NETand KiK-net stations and 0.3–3.0 Hz short-period recordings from Hi-net stations establish that the shaking variations result from a combination of differ...

in recent years, biosurfactants due to wide applications in chemical, petroleum, food andpharmaceutical industries, have been widely considered by researchers. biosurfactants are produced by aseries of microorganisms, so it is important to screen culture medium and operating conditions in miniaturized bioreactors prior to scaling up to large bioreactors.in this study, using a kind of miniaturiz...

A micro–electro-mechanical system (MEMS)-based image stabilizer is proposed to counteracting shaking in cell phone cameras. The proposed stabilizer (dimensions, 8.8 8.8 0.2 mm) includes a two-axis decoupling XY stage and has sufficient strength to suspend an image sensor (IS) used for anti-shaking function. The XY stage is designed to send electrical signals from the suspended IS by using eight...

[1] Shaking-induced changes in permeability have been invoked to explain a wide range of hydrologic responses to earthquakes. We measure the evolution of permeability in fractured sandstone in response to repeated shaking under undrained conditions. The frequency and amplitude of the imposed shaking are similar to those from earthquakes at distances of a fault length from the ruptured fault. To...

In this paper,we established a seismic resistance and damping model to study the effects of tunnel under seismic waves.We took the entrance of Galongla Tunnel as prototype, drafted the similarity relationships of the model.Damping layers and the measuring points of shaking table model have been arranged. We carried out loading test of the shaking table. Compared with the results of finite eleme...