Prediction of mill load in hot strip mill rolling

It has been ascertained whether or not the model capable of predicting the stress-strain relation of plain carbon steels, previously proposed, is applicable to the estimation of mill loads in the finishing process (consisting of six mill stands) of a hot strip mill. An appreciably good agreement with the predicted and measured mill load values has been obtained in the earlier passes where the strip microstructure is regarded to have completed static recrystallization, and the predicted mill loads in the later passes have been far less than the measured load owing to the effect of the strain accumulated in the previous rolling process. Then, a simple model to predict the accumulated strain has been constructed and introduced into the calculation of mill loads. As a result, the predicted mill loads have been fairly improved over the whole passes in the finishing process.     

Measurement of linewidth and FM-noise spectrum of 1.52 ?m InGaAsP lasers

The linewidth of 1.52 ?m InGaAsP lasers was measured as a function of the output power. The result shows that the linewidth is about 15 MHz when the output power is 1 mW. The FM-noise spectrum was also measured in the frequency range from 10 Hz to 100 MHz. The measured spectrum consists of the 1/f-noise and white-noise components. The linewidth calculated from the FM-noise spectrum is in good agreement with the measured value.     

Autologous blood transfusion for pulmonary and mediastinal surgery in 144 patients. The effectiveness of recombinant erythropoietin injection

Preserved autologous transfusions have been performed for elective pulmonary and mediastinal surgery to prevent the adverse effects of homologous transfusions. Autologous blood was collected preoperatively from 144 patients. The collected blood volume ranged from 400 to 1,600 ml with a mean volume of 544 ml. In four patients with benign diseases, 1,200 to 1,600 ml of blood was collected using 3,000 U of intravenous recombinant human erythropoietin (rh-EPO) administered every other day. One hundred twenty-three of these patients (85 percent) did not require a homologous transfusion. In the 84 patients undergoing either a pneumonectomy, lobectomy, or segmentectomy, 68 (81 percent) avoided homologous blood exposure. A patient with rh-EPO who bled 2,000 g during surgery received an autotransfusion of only 1,400 ml and his postoperative course was uneventful. Preserved autologous blood collected after rh-EPO injections is an effective method for minimizing homologous blood transfusions in pulmonary and mediastinal surgery.     

Ga0.47In0.53As metal-semiconductor-metalphotodiodes using a lattice mismatchedAl0.4Ga0.6As Schottky assist layer

Metal-semiconductor-metal photodiodes (MSM PDs) with Ga_0.47 In_0.53As active layers were fabricated. The low Schottky barrier height of GaInAs was overcome by the insertion of a lattice mismatched AlGaAs intermediary layer between metal and GaInAs active layer. Fabricated MSM PDs utilising interdigitated metal electrodes formed by a self-alignment technique showed a fast rise and fall time of 650 ps, which was limited by the capacitance of the device. The gain of the device was less than 1     

Tetrahedron treatment of the fcc lattice

A computer program for calculating the disorder-order phase diagrams of FCC-based binary alloys is presented. The cluster variation method is used, with the tetrahedron as the basic cluster. Ordered phases are the Cu₃Au type (L1₂) and the CuAu type (L1₀). Energy parameters are independent of temperature and composition, and include the many-body effect within a tetrahedron. A detailed explanation of the computer program is presented in the main body of the paper. Three example calculations are shown.     

Infarct tolerance against temporary focal ischemia following spreading depression in rat brain

A sensitive and versatile analytical method utilizing high-performance liquid chromatography (HPLC) and precolumn derivatization of 1H-4-substituted imidazole compounds is described. A HPLC method using 4-dimethylaminoazobenzene-4'-sulfonyl chloride (dabsyl chloride) and ultraviolet (UV) detection was developed for the analysis of histamine (HA) H3-selective compounds in human plasma, rat plasma, or homogenized rat cortical tissue. The average intra- and inter-assay variability, over a range of 10 to 0.01 microg/ml, was determined to be acceptable. The lower limit of detection for the dabsylated ligands was estimated to be <1.0 ng/ml while the lower limit of quantitation (LLOQ) was determined to be 10 ng/ml of conjugate. This assay has demonstrated it's suitability for the sensitive quantitation of several structurally diverse 1H-4-substituted imidazole HA H3-receptor antagonists in biological matrices for pharmacokinetic and biodistribution studies.     

CAE system in mechanical engineering

Two interactive CAE systems in mechanical engineering were developed. One is a general purpose system for structural design. All stages of design from the beninning of structural analysis to the last stage of strength evaluation can be treated so that optimal structures can be obtained by using this system with changing shapes and dimensions of the structures.

The other one is limited for turbomachinery design. But this includes not only analysis and simulation programs but also design programs and accumulated data for the products, etc.

This paper explains these systems and some element programs which support the system.