Structure and hydration of the M-state of the bacteriorhodopsin mutant D96N studied by neutron diffraction

Reduction of the slice-select refocusing gradient in two-dimensional multislice imaging results in asymmetry of the k-space representation of collected data along the slice-select direction. Standard methods of partial Fourier reconstruction developed for other methods of asymmetric k-space sampling can be used to reconstruct these data with final through-plane resolution smaller than the collected slice thickness. This method can be used for reducing scan time in the same manner as asymmetric sampling in the phase-encoded direction. In addition, the reduced refocusing gradient reduces minimum TE and motion artifacts in the same manner as for asymmetric sampling in the frequency-encoded direction (fractional echoes). Results using a resolution phantom and a flow phantom illustrate these concepts.     

Computers in diabetes ''96

Since the Diabetes Control and Complications Trial demonstrated the substantial benefits of tight glycaemic control there has been renewed interest in the application of information technology (IT) based techniques for improving the day-to-day care of patients with diabetes mellitus. Computer-based educational approaches have a great deal of potential for patients use, and may offer a means of training more health-care professionals to deliver such improved care. In this article the potential role of IT in diabetes education is reviewed, focusing in particular on the application of compartmental models in both computer-based interactive simulators and educational video games. Close attention is devoted to practical applications-available today-for use by patients, their relatives, students and health-care professionals. The novel features and potential benefits of such methodologies are highlighted and some of the limitations of currently available software are discussed. The need for improved graphical user interfaces, and for further efforts to evaluate such programs and demonstrate an educational benefit from their use are identified as hurdles to their more widespread application. The review concludes with a look to the future and the type of modelling features which should be provided in the next generation of interactive diabetes simulators and educational video games.     

Catalytic Spectrophotometric Determination of Ru(

A new catalytic spectrophotometric method for the determination of ruthenium was established basing on the catalytic action of Ru(Ⅲ) on the oxidative fading between chlorophosphonazo(Ⅲ) and KIO₄ in the acid medium in the water bath. The method offers the advantages of simplicity, rapidity, and sensitivity. Beer′s law is obeyed in the range of 0.02～0.20 μg/10 ml. The method has been applied to the determination of ruthenium in refined ores with satisfactory.     

Exceptional hardness and corrosion resistance of Mo5Ru3and W3Ru2films

Films of MO₅Ru₃ and WgRu₂ prepared by sputtering on hot sapphire substrates exhibit interesting properties. The films are among the hardest known electrical conductors and show Khoop hardness values comparable to sapphire. They exhibit high resistance to most common etchants (particularly acid etchants), have high scratch resistance, and have excellent adhesion to the (sapphire) substrates. The temperature coefficient of electrical resistivity can be made either negative, positive, or zero by varying the substrate deposition temperature. Reflectivity measurements from ultraviolet to infrared are also reported to assess their possible use as reflecting surfaces.     

FGH96镍基粉末高温合金的组织和性能

采用等离子旋转电极法制备FGH96合金粉末,研究了用两种不同成形工艺制备的合金的组织和性能,同时对FGH96粉末高温合金的持久断裂行为和裂纹扩展速率进行了分析和研究。