Piston drives a proton pump

Gas pump with a magnetically coupled piston

In recent gas-phase nonlinear optics experiments it has been necessaq to prepare gas mixtures with very homogenous composition and temperature inside the measurement cell.’ The gas cell contains a relatively massive electrode structure,’ which is in poor thermal contact with the cell walls, and which leaves no room for an effective stirring device. To effectively mix the gas in the cell we have...

Reconstitution of a proton pump.

The retinal-protein complex bacteriorhodopsin mediates lightxnergy conversion in halobacteria. This chromoprotein is embedded in the cell membrane and forms insular regions. These can be isolated by membrane-fractionation procedures, and they consist of a lipid matrix containing bacteriorhodopsin molecules in a hexagonal crystalline arrangement called the purple membrane. Light-absorption by ba...

Multidisciplinary Design Optimization of a Swash-Plate Axial Piston Pump

Guangjun Liu 1, Zhaocheng Zhou 1, Xin Qian 1, Xiaofeng Wu 2,* and Weihai Pang 3 1 School of Mechanical Engineering, Tongji University, Shanghai 200092, China; [email protected] (G.L.); [email protected] (Z.Z.); [email protected] (X.Q.) 2 School of Mechanical and Vehicle Engineering, Changzhou Institute of Technology, Changzhou 213002, China 3 College of Environmental Science and Engineering, Ton...

Proton Pump Inhibitors: Omeprazole

Oral Proton Pump Inhibitors

There is currently a lack of evidence to suggest superior clinical efficacy of one oral proton pump inhibitor over any other. Proton pump inhibitors display similar doseresponse relationships with similar potencies and efficacies at the equivalent dose. The decision to select one proton pump inhibitor over another is likely to be based on the agents’ licensed indication, patient tolerability an...