0.05).Conclusion:Ionizing radiation-induced color change combined with chrominance technique may provide a new convenient method for studying radiation absorbed dose.

Adult ; Humans ; Male ; Middle Aged ; Mining ; Molybdenum ; Pulmonary Ventilation ; physiology ; Radiography, Thoracic ; Respiratory Function Tests ; Silicosis ; diagnostic imaging ; physiopathology

This paper summarize the perioperative nursing of 12 newborns with thyroglossal cyst. The preoperative nursing measures focused on prone position,gastric tube feeding,close monitoring of vital signs and tracheal intubation as needed. If the TeSO2 was normal,oxygen therapy was not recommended. After the operation,continuously monitoring vital signs,respiratory care and use of sedatives as needed were carried out. As a result,all of the 12 infants recovered and discharged.

In order to study on the theory of " phlegm and blood stasis having same source" and effects of drugs for resolving phlegm on blood rheology, effects of Ban Xia, Gua Lou, Zhe Bei Mu and Shi Chang Pu on whole blood viscosity, erythrocyte deformation index and plasma fibrinogen content in normal rats. Results indicated that the drugs.for resolving phlegm had functions of decreasing whole blood viscosity, inhibiting hemoagglutination (except Gua Lou) and increasing capability of erythrocyte deformation; at high shearing rate, Shi Chang Pu and Zhe Bei Mu could slightly increase whole blood viscosity: Shi Chang Pu increased slightly plasma fibrinogen content. It is suggested that resolving phlegm also can removing blood stasis, and the mechanism of the drug for resolving phlegm in decreasing blood viscosity is related with decrease of blood lipids and anti - peroxidation of lipids.

Objective To improve the diagnosis and treatment of acute exacerbation in idiopathic pulmonary fibrosis(IPF)Methods A case with clinical proven acute exacerbation in IPF and treated with corticosteroid was described and the foreign literature was reviewed.Results Most patients with idiopathic pulmonary fibrosis(IPF)show slowly progressive deterioration.However,accelerated deterioration also occurs without any definite factors on infection,heart failure,et al in a few of patients with IPF who have previously shown slowly progressive deterioration,and for part of patients corticosteroid treatment is effective.Conclusion Some acute exacerbation in idiopatic pulmonary fibrosis can be idiopathic.

Objective:To evaluate curative impact of booster immunization with paternal lymphocytes on recurrent spontaneous abortors(RSA)with less reaction of primary patermal lymphocyte immunization.Methods:RSA patients with insufficient materno-fetal immuno-recognition were selected by flow cytometry of blocking antibody analysis and immunized with either induced paternal lymphocytes pretreated by IFN-? in vitro to those of anti-CD3-BE and anti-CD4-BE Ab lower than 0% or direct intradermal vaccination with their paternal lymphocytes without IFN-? pretreatment to those of anti-CD3-BE Ab beyond 0%.Reassessment of blocking antibodies was performed at the end of the second immnunization course.Results:Levels of blocking antibodies were significantly raised after the secondary booster immunization in RSA with insufficient materno-fetal immnuno-recognition whose blocking antibodies continuously decreased after being treated by the primary paternal lymphocyte immunization.No improvement of parameters was observed except the blocking effect in patients receiving secondary direct intradermal vaccination treatment.Conclusion:It is necessary for the RSA with insufficient materno-fetal immuno-recognition to experience secondary booster immunization preferably with paternal lymphocytes pretreated by IFN-? in vitro.

Objective To understand the effects of various decoration materials and furniture on indoors air quality. Methods Formaldehyde, benzene and ammonia were monitored in indoor air of some residential buildings in Guangzhou. The residential rooms were divided into two groups, one was simply decorated group, the other was completely decorated group and the two groups were compared. The questionnaire was also carried out. Results The average concentrations of formaldehyde of the two groups were 0.338 mg/m3 and 0.027 mg/m3 respectively, the rates of exceeded standard were 57.14%, 6.67% respectively, and the difference between the two groups was obvious (P

Objective To investigate the distribution and environmental pollution of dioxin-like polychlorinated biphenyls(PCBs) in a place of disused transformer and other electronic waste disassembled. Methods The ambient air, aerosol, water, soil and vegetable samples were collected to analyze the dioxin-like PCBs level with isotope internal standards and HRGC-HRMS techniques. Results The concentration of dioxin-like PCBs in ambient air was 4 031.77-4 942.34 pg/m3(namely 1.832-2.666 pg TEQ/m3), while in aerosol it was 325.45-3 499.77 pg/m3(0.370 9-1.536 3 pg TEQ/m3). In the soil sample, the value was 2 316.59-19 100.30 pg/g(1.358-15.264 pg TEQ/g) dry weight. In water it was 5.731-237.640 ng/L(2.585-73.046 pg TEQ/L). In vegetable it was 1 078.45-1 620.04 pg/g(0.778 3-1.126 2 pg TEQ/g) wet weight. In all air, aerosol, soil, water and vegetable samples, the content of PCB-118 was the most. PCB-126 had the highest TEQ value. In non-ortho PCBs, PCB-77 was of maximum content. In mono-ortho PCBs, PCB-118 was the most, and the followings were PCB-105, PCB-156 and PCB-167. All the 12 kinds of PCBs were investigated in all samples except PCB-169 absent in ambient air. Conclusions The investigated area around the disassembly of obsolete solid waste has been badly contaminated by dioxin-like polychlorinated biphenyls(PCBs), and PCBs already exist in the vegetables. According to the results of the present paper, some further studies should be carried out to evaluate the toxic effects on food and people health.

[Objective]Electrophoretic analysis of rat chemically extracted acellular nerve allograft(CEAN) protein was performed to investigate the protein of CEAN.Dorsal root ganglia of chicken were cultured onto the surface of CEAN slice to observe the effect of CEAN structure on the fiber regeneration.[Method]The CEAN were perpared according to Sondell method and electrophoresed to observed whether the electrophoresis strip of 28-30kDa(Myelin Protein) exited or not.Dorsal root ganglia of chicken were cultured onto thc surface of CEAN slice and dyed with nerve fiber fluorescence to observe the orientation of nerve fiber growth on the surface of CEAN slice.[Result]Electrophoretic analysis of rat CEAN protein showed that the electrophoresis strip of 28-30 kDa totally disappeared.A large number of nerve fibers grew from DRG along the basement membrane of CEAN.[Conclusion]No myelin protein remained in the CEAN,while the basement membrane structure of CEAN can induce the nerve fiber to grow.

[Objective] To investigate the biological characteristics of Wharton’[KG-38x]s jelly-derived mesenchymal stem cells (WJMSCs) and their differentiation into Schwann cell-like cells, and to provide a new cell seed source for nerve tissue engineering or cell therapy. [Methods]Umbilical arteries, veins and umbilical cord tunica externa were removed , and the remaining tissue (Wharton’[KG-38x]s jelly) was harvested.The umbilical cord was cut into small fragments and cultured with DMEM in orderto gather. Cultured WJMSCs were confirmed by the detection of MSC-specific cell-surface markers. WJMSCs were differentiated along a glial cell lineage using an established cocktail of growth factors. Immunocytochemical staining and Western blot were used to evaluate the characteristics of differentiated WJMSCs.[Results]WJMSCs were immunonegative for the haemopoietic cell-surface markers (CD34 and CD45) and neural stem cell marker (nestin), and immunopositive for MSC surface markers CD44, CD105, Stro-1 and vimentin. WJMSCs treated with a mixture of glial growth factors adopted a spindle-like morphology similar to Schwann cells. Immunocytochemical staining and Western blot analysis revealed that the treated cells expressed the glial markers p75 and glial fibrillary acidic protein indicative of differentiation.[Conclusion]WJMSCs can be differentiated into the cells that are Schwann-like in terms of morphologic features and phenotype and may be suitable as Schwann-cell substitutes for nerve repair in clinical application.