摘要:
A mop structure of converting vertical linear displacement into unidirectional rotation for dewatering a mop comprises: a lower pipe with the bottom coupled to a mop head and the internal side fixed to a spiral rod; a driving pipe, having an interconnecting hole engaged with the spiral rod for passing the spiral rod and disposed at the internal side of the lower pipe, and a circular upwardly facing ratchet disposed at the top of the driving pipe; a fixing pipe, having a penetrating hole formed at the middle of the fixing pipe for passing the spiral rod and disposed at the top of the driving pipe, a circular downwardly facing ratchet installed at the top inside the fixing pipe and corresponding to the circular upwardly facing ratchet of the driving pipe, such that after the spiral rod is passed out from the penetrating hole, a fixing mechanism is provided for limiting the fixing pipe and the driving pipe on the spiral rod; and an upper pipe, with the bottom fixed to the fixing pipe after the bottom of the upper pipe is extended into the lower pipe, and a fixing mechanism for adjusting an extending/contracting length being installed between the upper pipe and the lower pipe. The upper pipe can be driven for a linear displacement to drive and rotate the mop head.
摘要:
A manufacturing method makes memory modules from partially-good DRAM chips soldered to its substrate. The partially-good DRAM chips have a number of defective memory cells that is below a test threshold, such as 10%. Packaged DRAM chips are optionally pre-screened and considered to pass when the number of defects found is less than the test threshold. A defect table is created during testing and written to a serial-presence-detect electrically-erasable read-only memory (SPD-EEPROM) on the memory module. The memory module is finally tested on a target-system tester that reads the defect table during booting, and redirects memory access to defective memory locations identified by the defect table. The memory modules may be burned in or tested at various temperatures and voltages to increase reliability.
摘要:
Computer-implemented methods for valuing a derivative based on the BMA rate: the methods may comprise generating a model of the BMA/LIBOR ratio as a function of the LIBOR index, a stochastic noise function, and a seasonality process. The methods may also comprise solving the model for at least one value of the LIBOR index, and estimating a value of the derivative given the solution of the model. The value of the derivative may then be stored.
摘要:
This invention relates to modified hydroxylases. The invention further relates to cells expressing such modified hydroxylases and methods of producing hydroxylated alkanes by contacting a suitable substrate with such cells.
摘要:
Water-soluble, photosensitive, optically variable (POV) inks exhibit improved OCR readability due to improved infrared absorption properties. The inks can produce images that can be viewed with both visible and ultraviolet light to have physically coincident positive and negative images. The new inks contain at least two types of colorants in addition to the IR absorber and other suitable ingredients. The first colorant comprises a fluorescent dye or pigment emitting light within a characteristic emission band when excited by fluorescent-exciting radiation. The second colorant comprises a carbon black infrared radiation absorbing composition alone or with one or more dyes or pigments having a light absorption band at longer wavelengths than the characteristic emission band of the first colorant or also overlapping the emission wavelength of the first colorant in such a way as to result in a dark color. The inks are formulated to provide higher contrast in the presence of IR radiation while retaining a strong negative correlation between the visible and fluorescent images.
摘要:
A microphone includes a handgrip portion, a protective sleeve, and a connector interconnecting the handgrip portion and the protective sleeve. The connector includes a terminal seat connected to the handgrip portion and formed with a plurality of terminal passages, a first pivot part connected to the terminal seat, and a second pivot part pivoted to the first pivot part and connected to the protective sleeve so as to permit co-rotatation of the protective sleeve and the second pivot part relative to the handgrip portion.