[en] The basic principle and design parameters of an ion sensitive probe are described. The ion and electron temperatures in a mirror device were measured using this probe successfully. The results are discussed

[en] The basic principle and design parameters of an ion sensitive probe are introduced. The ion and electron temperature in a mirror is successfully measured by this probe. Discussions about the curves of ion temperature and density measured by the probe are also presented

[en] Graphical abstract: - Highlights: • Novel red phosphor Ca₁₂Al₁₄O₃₂Cl₂:Eu³⁺ was prepared by solid-state reaction. • Excitation spectra suggested an obvious absorption in near-ultraviolet region. • Under 392 nm excitation, the phosphors exhibited a red emission at 614 nm. • Ca₁₂Al₁₄O₃₂Cl₂:Eu³⁺ could be potentially applied in near UV white LEDs. - Abstract: A novel red phosphor Ca₁₂Al₁₄O₃₂Cl₂:Eu³⁺ was synthesized using a solid-state reaction method, and its luminescence characteristics and charge compensators effect (Li⁺, Na⁺, K⁺) were investigated. The excitation spectra showed a obvious absorption in near-ultraviolet region. Under 392 nm excitation, the phosphors exhibited an intense red emission at 614 nm. The Commission Internationale de l’Eclairage (CIE) chromaticity coordinates and quantum efficiency (QE) were (0.65, 0.35) and 62.3%, respectively. The good color saturation, high quantum efficiency and small thermal-quenching properties indicate that Ca₁₂Al₁₄O₃₂Cl₂:Eu³⁺ could be potentially applied in near UV white light-emitting diodes

[en] A new method about multichannel expanding of data acquisition is described for measuring many kinds of parameters simultaneously during the physical experiments. Its basic principle is given. The expander has been used successfully for over a year, and the results of operation are satisfactory

[en] Treatment of an aneurysm with a mesh stent alone becomes an emerging technique. The mechanism involves the mesh stents, when it crosses the neck of an aneurysm could change the internal circulation and induce the formation of stable thrombus and in turn assists the growth of neointima for anatomical healing of the aneurysmal neck. The mesh stent technique aimed at vascular reconstruction with expected curing effect for aneurysm together as a simple and safe way to keep the patency of the small arterial branches, just contrary to the covered stent. This technique couldn't be carried out practically in wide scale because of immaturity, therefore we give a comprehesive review in the progress of this field. (authors)

[en] The application of ICRH (Ion Cyclotron Resonance Heating) in the MM-2U simple mirror plasma which is created and heated by ECRH (Electron Cyclotron Resonance Heating) can result in the increase of plasma temperature and density. The confinement performance of plasma also can be improved. The ion and electron temperatures and the plasma density are measured in detail by using the ISP (Ion Sensitive Probe). The plasma floating potential profile are measured in both the radial and the axial direction. The experimental results show that ICRF (Ion Cyclotron Radio Field) can be used for stabilizing ECRH plasma and for improving the confinement performance of plasma

[en] Objective: To analyze the CT contrast enhanced features of the extra-organic primary tumors in pelvis and to evaluate anatomic bases of these imaging characteristics. Methods: CT findings in 14 patients with pathologically proved extra-organic primary tumors in pelvis were reviewed retrospectively for tumor size, density, margins, contrast enhanced characteristics, location and relationship of the lesions with surrounding organs and tissues. Results: There were benign tumors (n=3) and malignant tumors (n=11) in this study. There were 6 lesions in peritoneal cavity and 6 in retroperitoneal space of pelvis respectively, and two other masses were in both peritoneal cavity and retroperitoneal space of pelvis. CT scan revealed that there were 6 solid masses and 8 cystic-solid masses. The enhanced characteristics of lesions were homogeneous and heterogeneous in 3 and 11 patients respectively. The fatty space surrounding the lesion was invasive in 7 cases and all of them were malignant tumor. The fatty space surrounding lesion was clear in other 7 cases including 3 benign tumors and 4 malignant tumors. CT revealed calcification in 4 lesions including benign teratoma (n=2), malignant teratoma (n=1), and carcinoid (n=1). Conclusion: In the diagnosis of extra-organic primary tumors in pelvis, CT enhancement scan can reveal the anatomic location and relationships of the lesions with surrounding organs and tissues and can differentiate benign and malignant tumor to some degree

[en] A fast ionization gauge for use in strong magnetic field and noisy environment has been developed for measuring the density and the flux of neutral particles near the plasma or the divertor plates in the HL-2A tokamak. The configuration, the working principle, the design outline and the experimental results of the fast gauge are described in this paper. With the fast gauge at nil magnetic field, the measuring region is from 6.4 x 10^-6 Pa to 0.15 Pa, and the rate of ion current to electron current increases linearly with the pressure from 1 x 10^-5 Pa to 0.15 Pa. At magnetic field 0.15T, the sensitivity factor of the gauge for N₂ does not change compared with that at nil field. The change of the sensitivity factors of the gauge is less than 10% under an angle of 15 degree between the gauge and magnetic field

[en] The hard X-ray pinhole imaging method and its application in a simple mirror for measuring the radiation properties of ECR plasma are presented. This imaging method can directly display the spatial structure of the hot electron annulus without disturbing the plasma. Clear visual pictures of the electron annulus can be taken at suitable discharge conditions and a two dimensional contour of radiation intensity is deduced. Usually, the electron annuli with azimuthal asymmetry were observed and there is a gap at the ring. The azimuthal asymmetry of annulus is changed as the microwave injection power is changed

[en] Objective: To study the methods of prostatic arteriography and evaluate the arteriographic appearance of prostatic blood supply. Methods: Selective and super-selective prostatic arteriographies were performed in 62 patients with benign prostatic hyperplasia and prostatic cancer. Results: The prostatic blood supply originated mainly from inferior vesical artery or internal pudendal artery or prostatic artery (80%). Prostatic arteriography could be performed successfully with skillful catheterization and high resolution DSA. Conclusions: Prostatic arteriography is helpful for evaluating the origin and quantity of prostate vasculature and important to differentiate benign prostatic hyperplasia from prostatic cancer