Hydraulic cylinder is an indispensable linear actuator in high power applications like construction machinery. In order to reduce the energy consumption, the noise and the waste oil disposal pollution of the hydraulic cylinder control system, the most direct method is adopting the direct pump...

The sustainability of museum lighting is twofold, as not only energy efficiency is required for high quality illumination but control of damage to objects by optical radiation in addition. The conservation of objects, which can be highly responsive to radiation, is as fundamental as the cultural...

An extension of previous studies, which did not treat quantitatively possible effect of diffuse skylight on the enhancement of energy gain of solar thermal collectors when sun-tracking instead of fixed position is used, involved consideration of possible contribution of the former to the overall...