摘要:
Wafer sort data can be converted to binary data, whereby each integrated circuit of the wafer is assigned a value of one or zero, depending on whether test data indicates the integrated circuit complies with a specification. In addition, each integrated circuit is assigned position data to indicate its position on the wafer. A frequency transform, such as a multidimensional discrete Fourier transform (DFT), is applied to the binary wafer sort data and position data to determine a spatial frequency spectrum that indicates error patterns for the wafer. The spatial frequency spectrum can be analyzed to determine the characteristics of the wafer formation process that resulted in the errors, and the wafer formation process can be modified to reduce or eliminate the errors.
摘要:
This disclosure relates to a process for manufacturing a mono-cycloalkyl-substituted aromatic compound, said process comprising contacting a feedstock comprising an aromatic compound and hydrogen under hydroalkylation reaction conditions with a catalyst system comprising a molecular sieve and at least one metal with hydrogenation activity, wherein said molecular sieve has, in its as-synthesized form and in calcined form, an X-ray diffraction pattern including peaks having a d-spacing maximum in the range of 14.17 to 12.57 Angstroms, a d-spacing maximum in the range of 12.1 to 12.56 Angstroms.
摘要:
This disclosure relates to a process for manufacturing a mono-cycloalkyl-substituted aromatic compound, said process comprising contacting a feedstock comprising an aromatic compound and hydrogen under hydroalkylation reaction conditions with a catalyst system comprising a molecular sieve and at least one metal with hydrogenation activity, wherein said molecular sieve has, in its as-synthesized form and in calcined form, an X-ray diffraction pattern including peaks having a d-spacing maximum in the range of 14.17 to 12.57 Angstroms, a d-spacing maximum in the range of 12.1 to 12.56 Angstroms.
摘要:
A pumping system is provided which is a mobile, vehicle-mounted pumping system, such as for water or fuels, which mounts on a vehicle and may be used for various applications. The pumping system operates a drive system and control system for liquid pumps almost exclusively by hydraulic fluid pressure.
摘要:
Apparatus for automatically measuring and recording, in a seqential manner, various parameters such as capacitance, dissipation factor and insulation resistance, of each of a plurality of capacitors under substantially identical test conditions. The apparatus discharges residual charge on each capacitor.
摘要:
Test fixtures, each being adapted to receive a capacitor, are connected through a relay network to a time variable high voltage source. Predetermined relays are energized in a predetermined sequence to connect a given capacitor to the source. A high voltage signal having a predetermined waveform is applied to the capacitor associated with an energized relay. When the current through the given capacitor exceeds a threshold, the voltage value then being applied to the capacitor determines the breakdown voltage of the capacitor.
摘要:
This disclosure relates to a process for manufacturing a mono-cycloalkyl-substituted aromatic compound, said process comprising contacting a feedstock comprising an aromatic compound and hydrogen under hydroalkylation reaction conditions with a catalyst system comprising a molecular sieve, wherein said molecular sieve comprises a framework of tetrahedral atoms bridged by oxygen atoms, the tetrahedral atom framework being defined by a unit cell with atomic coordinates in nanometers shown in Table 2.
摘要:
A field assembled gas riser includes an adapter having plural inner grooves that receive the outer surface of a plastic gas line as it is plastically deformed by axial insertion of a stiffener into the gas line. The gas line is terminated at a desired location, the adapter slid over the terminated end, and a stiffener manually inserted into the gas line. Continued axial advancement of the stiffener acts as a mandrel to plastically deform the gas line into the grooves and provide a secure, sealed arrangement.
摘要:
The present invention comprises a method for the purification of the 69 kDa outer membrane protein of Bordetella B. pertussis and the protein purified therewith. A preferred embodiment comprises the purification of the 69 kDa protein from Bordetella B. pertussis strain Bp 353. The present process is advantageous in that it does not require or involve the use of biologics (such as monoclonal antibodies) and therefore simplifies the purification procedure and makes the resulting purified protein particularly advantageous for inclusion in acellular vaccines.
摘要:
A method is provided for effecting the reduction of PCB contamination in organic waste by utilizing a particular strain of a biologically pure culture of Alcaligenes eutrophus under aerobic conditions.