ARTICLE INFO In many applications it is required to control a large output load using a relatively low control force. To satisfy such purposes, device like mechanical power amplifier can be used which generally gives very fast response. As per the requirement of the system, power can be instantaneously available from continuously rotating drums of mechanical power amplifier. This project will f...

At low flow rate operation, Francis turbines feature a cavitating vortex rope in the draft tube resulting from the swirling flow of the runner outlet. The unsteady pressure field related to the precession of the vortex rope induces plane wave propagating in the entire hydraulic system. The frequency of the vortex rope precession being comprised between 0.2 and 0.4 times the turbine rotational s...

A regular rope quality inspection is compulsory for wire ropes in security-relevant applications. Principal procedures of such quality checks are the visual inspection for surface defect detection, the magnetic inspection for a localization of broken wires and the measurement of the rope diameter. However, until today it is hardly possible for the human inspector to measure other important rope...

Our recent study defined a new role for SIRT1 as a regulator of hepatic lipid metabolism. In the liver a major target of this sirtuin is the PPARalpha/PGC-1alpha signaling axis. Ablation of SIRT1 in the liver results in disrupted fatty acid oxidation, increased cellular stress, and elevations in proinflammatory cytokines. However, contrary to previous studies, we observed no changes in glucose ...

As human beings we are vulnerable. Simply by virtue of our being alive, we are exposed to all sorts of threats and adverse influences, and each day we run the risk of getting seriously injured or ill, if not worse. Critical care practices such as the Emergency Department (ED), the operating room (OR) and the Intensive Care Units (ICU) are places where this vulnerability is revealed most vividly...

BACKGROUND Overweight and obesity are considerable public health problems internationally as well as in Sweden. The long-term results of obesity treatment are modest as reported by other studies. The importance of extending the focus to not only comprise obesity treatment but also prevention of weight gain is therefore being emphasized. However, despite the suggested change in focus there is st...

1 – Coordinator of the Shoulder and Elbow Surgery Group, Bahia Institute of Orthopedics and Traumatology (INSBOT – Instituto Baiano de Ortopedia e Traumatologia); Orthopedic surgeon at the Hospital Português da Bahia 2 – Head of the Shoulder and Elbow Surgery Group, ORTOPED Fracture Clinic; Orthopedic surgeon at the Hospital Português da Bahia 3 – Medical Assistant, Shoulder and Elbow Surgery G...

The amount of knowledge in the biological sciences is growing at an exponential rate. Simultaneously, the incorporation of new technologies in gathering scientific information has greatly accelerated our capacity to ask, and answer, new questions. How do we, as organismal biologists, meet these challenges, and develop research strategies that will allow us to address the grand challenge questio...

Aboard a sailboat, when the wind changes unfavourably for our course, we can adjust the sails. We perform the operation of pulling a rope—but when the rope is fastened to the sail as a sheet, pulling the rope means adjusting the sail, while also paying attention to the wind, the sea current, the movements of the boat. The rope-with-sail is the very rope we are pulling: a sociomaterial entanglem...