Abstract: A rear projection display including a display unit, a plurality of guiders, a display screen, and at least one fastener is provided. The guiders are disposed on two opposite sides of the display unit respectively, and each guider has a guiding groove protruding from the display unit. The display screen is disposed between the guiders, and the display screen slides along the guiding grooves. The fastener which covers a portion of the display screen is disposed on the display unit. The display screen is fastened on the display unit by the guiders and the fastener.

Abstract: A heart state monitor method is proposed. The physiologic parameter of a life body is measured and then preformed by Fourier transform analysis. Next, the frequency domain data of the physiologic parameter are converted into a power spectral density (PSD). A heart beat noise index of the life body is then obtained according to the PSD. Finally, the heart state of the life body is diagnosed according to the heart beat noise index. The heart beat noise index may be quickly discriminated to let the life body and medical staffs grasp the current heart state of the life body at any time.

Abstract: A heart state monitor method is proposed. The pressure signal of a life body is measured and then performed by Fourier transform analysis. Next, the frequency domain data of the pressure signal are converted into a power spectral density (PSD). A heart beat noise index of the life body is then obtained according to the PSD. Finally, the heart state of the life body is diagnosed according to the heart beat noise index. The heart beat noise index may be quickly discriminated to let the life body and medical staffs grasp the current heart state of the life body at any time.

Abstract: A heart state monitor method is proposed. First, a physiologic parameter of a life body is measured. The physiologic parameter is then converted from the time domain to the frequency domain by means of Fourier transform. Next, the frequency domain data of the physiologic parameter are converted into a PSD. A heart beat noise index of the life body is then obtained according to the PSD. Finally, the heart state of the life body is diagnosed according to the heart beat noise index. Therefore, measurements of heart state can be performed for a life body. The heart beat noise index can be quickly discriminated to let the life body and medical staffs grasp the current heart state of the life body at any time.

Abstract: A method for the direct preparation of olefins from ketones and Grignard reagents without isolation of the intermediate alcohol and in the absence of acidic dehydration catalysts. Ketones are reacted with a Grignard reagent in the presence of a low boiling solvent for the Grignard reagent to form a Grignard reaction mixture. An active hydrogen-containing compound is added to the Grignard reaction mixture to form a reaction mixture comprising an alcohol and Grignard salts. The alcohol is dehydrated in the presence of the Grignard salts and a solvent which has a higher boiling point than solvents typically emloyed during the Grignard condensation. The higher boiling solvent can be an active hydrogen-containing compound such as n-octanol and otherwise can be added at any time, including the initial condensation step.

Abstract: A filter having a peripheral skirt extending above and below the filter element, provides a gaseous cushion which prevents clogging the filter. The peripheral edges of the filter may have means for preventing entry of solid in the narrow space between the skirt wall and the filter edge. The filter can be part of an entry or exit port in the base of a crystallizer in which crystals are formed, washed, melted and filtered in a single unit. A reactor containing the novel filter is also useful for carrying reactions using heterogeneous catalysts and reactions in which an initially homogeneous catalyst becomes nonhomogeneous during the reaction.