[en] Effects of oxygen on the microstructure and the magnetic properties of (FeCo)–Zr–O thin films deposited by reactive sputtering are investigated in this paper. It is found that the Fe–Co nanocrystals, dispersed in insulator matrix, tend to form column-shaped nanocrystal assembly with long axis parallel to the deposition direction. Decay of anisotropy induced by the deposition field is observed

[en] Influences of the electrolyte acidity and an external field of 8 kOe on FeCo nanowires deposition are systematically analyzed in this paper. The deposition field gives rise to a preferred crystalline orientation in the nanowires, and an anisotropy along the applied field direction has been induced. Both the coercivity and the loop squareness ratio have been greatly enhanced. - Highlights: • AAO templates. • FeCo nanowires. • Deposition in magnetic field. • Induced anisotropy

[en] Asbestos exposure is widespread among certain occupational groups and recently universal among the general urban population secondary to air pollution. In light of a documented increased incidence of neoplasia in asbestos workers, asbestosis should be cause of concern. The diagnosis of asbestosis usually depends upon a radiographic appearance consistent with diffuse pulmonary fibrosis, pleural plaques and associated neoplasms such as malignant mesothelioma (pleural or peritoneal), bronchogenic carcinoma and gastrointestinal carcinoma. (author)

[en] A grading of a Lie algebra is called fine if it could not be further refined. For a fine grading of a simple Lie algebra, we define its Weyl group to describe the symmetry of this grading. It is already known that the Weyl group of the fine grading of sl(n,C) induced by the action of the group Π_n of the generalized Pauli matrices of rank n is SL(2,Z_n), where Z_n is the cyclic group of order n. In this paper, we consider the fine grading of sl(n^k,C) induced by the action of the group of k-fold tensor product of the generalized Pauli matrices of rank n. We prove that its Weyl group is Sp(2k,Z_n) and is generated by transvections; therefore, this generalizes the previous result.

[en] 7 series high strength aluminum alloy under high temperature and without protective easy to rust, now 7 series for high strength aluminum alloy work piece is dried after rinsing water way, compressed air after water hot air drying cutting surface, the drying after the work piece can meet the requirements of the assembly of the late, but also in the dry mass artifacts appear many instability, the main reason is that aluminium alloy work piece for a long time at high temperature, high oxygen environment. In order to solve the problem of high temperature and high oxygen, the vacuum drying process was developed for experimental verification. The vacuum drying process was optimized through the experiment, and the surface and inner cleanness of the blind hole of the work piece after vacuum drying and hot air drying were compared. The stability of the vacuum drying process was verified by batch test. (authors)

[en] 7 series high-strength aluminum alloy work pieces got massive corrosion before assembling in summer. The number of corrosion shows increasing trend year by year, which has an impact on relevant departments' production tasks. We analyzed possible causes of 7 series high-strength aluminum alloy work pieces rust from mechanical working, cleaning procedure, assembling environment, metallographic image, electron spectrum and relevant experiments. The result showed that the surface of aluminum alloy work pieces got CL residue. CL residue can crack the oxide film on aluminum alloy under the high humidity environment in summer, which leads to rust. However, we can prevent this rust of 7 series high-strength aluminum alloy work pieces effectively by using pure water to blend cutting fluid and reducing the humidity of environment. (authors)

[en] Stress can induce a spontaneous magnetic field in ferromagnetic steel under the excitation of geomagnetic field. In order to investigate the impact of applied magnetic field and tensile stress on variation of the residual magnetic signals on the surface of ferromagnetic materials, static tensile tests of Q235 structural steel were carried out, with the normal component of the residual magnetic signals, H_p(y), induced by applied magnetic fields with different intensities measured through the tensile tests. The H_p(y), its slope coefficient K_S and maximum gradient K_m_a_x changing with the applied magnetic field H and tensile stress were observed. Results show that the magnitude of H_p(y) and its slope coefficient K_S increase linearly with the increase of stress in the elastic deformation stage. Under yield stress, H_p(y) and K_S reach its maximum, and then decrease slightly with further increase of stress. Applied magnetic field affects the magnitude of H_p(y) instead of changing the signal curve′s profile; and the magnitude of H_p(y), K_S, K_m_a_x and the change rate of K_S increase with the increase of applied magnetic field. The phenomenon is also discussed from the viewpoint of magnetic charge in ferromagnetic materials. - Highlights: • We investigated how applied magnetic field and tensile stress impact H_p(y) signals. • Magnitude of H_p(y), K_S and K_m_a_x increase with the increase of applied magnetic field. • Both applied magnetic field and tensile stress impact material magnetic permeability. • Applied magnetic field can help to evaluate the stress distribution of components.

[en] Fe_xCo_1–x alloy nanowire arrays are deposited by a dc electrochemical method with anodic aluminum oxide nanoporous templates. Effects of nanowire magnetic moment and interwire distance on the interwire magnetostatic interaction are studied in this paper. It is found that the interaction increases with increase of nanowire magnetic moment and/or decrease of interwire distance. An effective wire diameter is introduced to quantitatively analyze such inetraction. A Monte Carlo simulation is also carried out to calculate the experimental measurements. - Highlights: • FeCo nanowire arrays have been deposited with AAO templates. • The interwire magnetostatic interaction decreases with low magnetic moment. • The interwire magnetostatic interaction increases with small interwire distance. • Effective wire diameter to analyze the interwire magnetostatic interaction

[en] 1. The plain abdominal films od 246 cases of intussusception preceding hydrostatic barium enema were analysed in order to reassess the diagnostic reliability of the abdominal plain film examination. Then, these were compared with 42 cases in which the diagnosis had been rejected by means of barium enema. 2. It was found that diagnosis of the intussusception was possible in 80% of 246 cases on the basis of plain film findings alone. 3. The most common and reliable findings of intussusception in plain film diagnosis are those of sparse faecoloid bowel content and sparse amount of intestinal gas. 4. The loops of distended small bowel in cecal or ascending colon area and intraabdominal soft tissue mass are considered to be relatively reliable findings. 5. In 42 cases in which the diagnosis had been rejected by means of barium enema, intussusception was excluded in 74% of the cases on the basis of plain film findings alone

[en] The purpose of this paper is to evaluate and analyze the radiological findings of 13 cases of lumbar spondylolisthesis with intact neural arch at Han-Gang Sung- Shim Hospital during period from Jan. 1975 to June 1980. 1. The age distribution of the patients varied from 31 to 83 years old. The average of the age was 53 years old. 12 patients were female and only one patient was male. 2. All cases revealed anterior slipping of the L4 body on the L5 body, of which degree was classified by Meyerding's method, first degree in 12 patients and second degree in one patient. 3. The angle between the pedicle and inferior articular facet of affected vertebra was measured by Junghann's method. The average of angle was 123 degree. 4. Of 13 cases, 2 cases who had neural compression caused by dislocation of the vertebral bodies and intrusion of lamina and arthritic facets into stenotic spinal canal treated by laminar decompression including foraminotomy. Good results were obtained. 5. The secondary degenerative change of the vertebra was considered to be the cause of the spondylolisthesis with intact neural arch