[en] The original firing conditions of the Yuan Dynasty Ru porcelain samples were studied by Moessbauer spectra. The result showed that the Ru porcelain glaze was fired in reducing atmosphere and the original firing temperature was deduced to be about (1150 ± 50) deg C. The Ru-porcelain body was found to be fired in stronger reducing atmosphere and its original firing temperature was also about (1150 ± 50) deg C

[en] Forty samples of South Song 'Jiaotan Guankiln' are analyzed by neutron activation analysis (NAA). The 36 trace element contents in every sample are determined. This trace elements are analyzed by fuzzy cluster method. The result shows that the source of glaze raw material of South Song Guan porcelain is clearly different from that of the body raw material. For Guan kiln of South Song dynasty there was a very stable and lasting source of raw material of glaze and body. The archaeological problems are clarified. The glaze material and body material of modern Guan porcelain are different from those of the ancient Guan Porcelain

[en] The 28 samples of glazes and bodies of ancient Chinese Ru porcelains are analyzed by neutron activation. The 36 element contents in each sample are determined. The neutron activation analysis (NAA) data are analyzed by fuzzy cluster. The trend cluster diagram is obtained. The result shows that the ancient Chinese Ru porcelains were most probably from the same raw material source though they were from different time, fired in different kilns and in different colors. The near provenance relation between ancient Jun porcelain and ancient Ru porcelain is preliminarily analyzed. The two modern Ru porcelains approximate to ancient Ru porcelains, one becomes estranged from ancient Ru porcelains. Jingdezhen porcelain is unconcerned with Ru porcelains

[en] The firing temperature dependence has been studied of the quadrupole splitting (QS) and isomeric shift (IS) for the structure iron in Yuan dynasty Jun porcelain glaze and simulated ancient blue Jun glaze by Moessbauer spectroscopy. The QS and IS for the two kinds of glaze were compared. Firing temperature for the former was determined to be above 1250 C deg, and coordination number for Fe²⁺ and Fe³⁺ was four. It has been found that the latter has a broad process of dehydroxylation and vitrification, which may be profitable to form the unique glaze colour of Jun porcelain. When firing temperature is above 1200 C deg, coordination number for the latter becomes 4 too

[en] The famous Ru porcelain, Jun porcelain and Guan porcelain of Song Dynasty and Yuan Dynasty are analyzed. The Moessbauer parameters of the ancient porcelains and the imitative ancient porcelains are compared. The firing techniques, coloring mechanism and microstructures of the ancient Chinese porcelains have been discussed. (7 figs., 4 tabs.)

[en] It is analyzed that Moessbauer parameter variations of clays from the famous sites of ancient kilns change with temperature, time and atmosphere in firing process. The variation of the Moessbauer parameters of the imitative ancient Chinese Ru porcelain sky-green glaze with the firing conditions is studied in detail. The Moessbauer spectra show that the sky-green glaze contains three kinds of iron minerals, i.e. the structural iron (Fe²⁺ and Fe³⁺); Fe₂O₃ and Fe₃O₄; The relative intensity of the paramagnetic peak Fe²⁺ increases and the magnetic ratio of the magnetic peak decreases with increasing temperature. Based on the variation of the quadrupole splitting (QS) of the paramagnetic peak Fe²⁺, the phase transformation characteristics of the sky-green glaze in the firing process is discussed. The coloring mechanism of the sky-green glaze and the variation of its magnetism in the firing process are also investigated. The variation of the hyperfine interaction parameters and the variable mechanism of the sky-green glaze at liquid helium temperature is studied. Moessbauer spectra of the imitative ancient blue Jun porcelain indicate that the glaze and boby materials contain Fe₂O₃, Fe₃O₄ and structural iron. It is clear that during the firing process, the glaze undergoes dehydration, dehydroxylation, vitrification and recrystallization. The Fe²⁺ quadrupole splitting value of the paramagnetic peak of the body material is rather high even at low firing temperature. The distinction between dehydration and dehyroxylation is not clear. The changes of magnetism of the glaze and body materials in the firing process and coloring mechanism of the sky-blue Jun porcelain are analyzed

[en] Many petroleum-bearing reservoirs are known as complex-lithology, complex-mineralogy earth formations where the existing nuclear magnetic resonance (NMR) analysis models require modification and extension to work properly. This paper discusses the effects of mineralogy variation in complex-lithology formation rocks that will cause NMR response variations. In particular, the existence of iron-rich authigenic clays and the nonquartz grains in siliciclastics affect the surface relaxivity and the internal field inhomogeneity. Using a simplified pore-lining clay model, we estimated that the magnitude of the internal gradient in siliciclastics is comparable with or greater than that of the instrument-generated field gradient common to the currently used NMR logging tools. To account for these effects for reservoir fluid identification and quantification from NMR data, an inversion model is created, which includes the mean susceptibility of the grain minerals, the correlation between pore size and the relaxation time of the wetting-phase fluid in the pores and the geometric restriction to the fluid molecular diffusion.

[en] Objective: To analyze the value of colloid P^-32 in the treatment of Pigmented villonodular synovitis (PVS). Method: 12 cases of knee PVS received the treatment with colloid P^-32. After drawing the fluid from the joint cavity, the colloid of P^-32 5mCi was injected into the cavity then the patients were asked to lie down 40 min, and to change position every 10 min. Blood routine was examined before and once a week after the therapy in the first month and then once a month in the following 6 months. 22 cases received operation. All the patients were follow-up. Result There is no side re- action and the blood routine was normal in the follow-up. The cure rate was 100% in colloid P^-32 treatment group. However, 7 cases of PVS recurred and the cure rate was 68.2% in operation treatment group. Conclusion: The injection of P^-32 colloid in the cavity of knee joint to treat the PVS is safety and effective. (authors)

[en] Up to 43 glaze and body samples of ancient and modern Chinese Jun Porcelain and other porcelain are chosen and contents of 36 elements for each sample are determined by NAA. The NAA data are then analysed by the fuzzy cluster method. The result shows that although the ancient Jun Porcelain samples span leaped 600 years and are from different kilns and their glaze colors are utterly different, they have a long-term, stable and mainly the same supply of raw material. The relation between ancient Jun Porcelain and ancient Ru Porcelain is also preliminarily analysed. It is found that only few modern Jun Porcelain samples are similar to ancient Jun Porcelain but the majority of them are different from ancient ones

[en] Forty-three samples of ancient Jun porcelains and so on were chosen. Neutron activation analysis (NAA) was used to measure the 36 trace elements in every sample. Seven elements were chosen as the 'fingerprint elements'. The provenance of the glazes and bodies of ancient Chinese Jun porcelain were investigated by the fingerprint element analysis method. The result shows that although the ancient Chinese Jun porcelain samples have been leapt over six hundred years, and glaze colors are utterly different and are from many different kilns, there are long term, stable and same mainly raw material source. The near provenance relation between ancient Jun porcelain and ancient Ru porcelain is preliminarily analyzed. A few modern Jun porcelains approximate from ancient Jun porcelains, the majority become estranged from ancient Jun porcelain