最新刊期
      期 3 ， 2016

        REVIEW

      • Fuwu LI,Lihua WANG,Shiping SONG
        Vol. 34, Issue 3, Pages: 1-11(2016) DOI: 10.11889/j.1000-3436.2016.rrj.34.030101
        摘要：This review outlines the materials of recognition element, methods of signal amplification, interface regulation of electrode and the potential application of the research area in expression level of miRNA influence by radiation.  
        关键词：MicroRNA;Cancer;Biomarker;Electrochemical;Biosensor   
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        发布时间：2021-12-10
      • Xiujun SONG,Fengsheng LI,Wei LI,Qisheng JIANG
        Vol. 34, Issue 3, Pages: 12-16(2016) DOI: 10.11889/j.1000-3436.2016.rrj.34.030102
        摘要：Therapy of acute hematopoietic radiation sickness in current and application of mesenchymal stem cell (MSC) in hematopoietic radiation sickness, enter radiation disease and cutaneous radiation syndrome were summarized and discussed, to provide ideas for studying the application of MSC in therapy of acute radiation disease.  
        关键词：Acute radiation disease;Hemopoietic stem cell;Mesenchymal stem cell   
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        发布时间：2021-12-10

        RADIOBIOLOGY AND RADIOMEDICINE

      • Qinling CUI,Yan SUN,Wen ZHONG,Genyan GUO,Yanzhi CHEN,Yuxia ZHAO
        Vol. 34, Issue 3, Pages: 17-23(2016) DOI: 10.11889/j.1000-3436.2016.rrj.34.030201
        摘要：The aim was to evaluate the dosimetry superiority of IMRT (Intensity-modulated radiotherapy) in early-stage breast cancer with conserving surgery and provide more valuable evidences to the clinical researches. Clinical trials of dosimetric comparision between 3D-CRT and IMRT for early-stage breast cancer with conserving surgery were obtained from PubMed, EMbase, Sciencedirect, Wei pu, CNKI (China national knowledge Infrastructure), and Wanfang databases, which were evaluated and analyzed with the Cochrane Collaboration's RevMan 5.2.0 software. Fifteen samples were included. Compared with 3D-CRT plans, IMRT plans had a lower ipsilateral lung V20 (p=0.004), V30 (p=0.008), V40 (p=0.000 8), Dmax (p=0.001) and heart V30 (p=0.002), V40 (p<0.000 01), while had a higher ipsilateral lung V5 (p=0.000 5), V10 (p=0.05) and heart V5 (p<0.000 1), V10 (p=0.000 7). IMRT plans provided a significantly better coverage of the PTV V95 (p=0.05), V105 (p<0.000 1), V110 (p<0.000 01) and maximal dose (p<0.000 01). IMRT plans had a better dose homogeneity index and conformity index than 3D-CRT plans, both with p=0.02, but had a higher contralateral lung V5 (p=0.002), Dmax (p=0.000 4) and contralateral breast V3 (p=0.000 6). There was no significant difference between IMRT and 3D-CRT plans for V100, mean and minimal doses of PTV, ipsilateral lung mean dose, heart V20, maximum, mean dose, and contralateral mean dose, all p>0.05. Compared with 3D-CRT plans, IMRT plans had the dosimetry superiority for early-stage breast cancer with significantly better coverage and dose homogeneity of planning target volume while maintaining lower doses to high risk organs.  
        关键词：Breast cancer;Radiotherapy;Three-dimensional conformal radiotherapy (3D-CRT);Intensitymodulated radiotherapy (IMRT);Meta-analysis   
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        发布时间：2021-12-10

        RADIATION CHEMISTRY

      • Guangzhen LI,Qianhong GAO,Jiangtao HU,Rong LI,Zhe XING,Guozhong WU
        Vol. 34, Issue 3, Pages: 24-30(2016) DOI: 10.11889/j.1000-3436.2016.rrj.34.030301
        摘要：The adsorption behavior of Au(Ⅲ) ions on the quaternary ammonium-based ultrahigh molecular weight polyethylene fiber (UHMWPE) fibrous adsorbent (UHMWPE-g-P(GMA-co-MA)-TETA-GTA) prepared by pre-irradiation grafting technique was investigated, while influences of initial pH value of the solution, Au(Ⅲ) ion concentrations and temperature were also concerned. The results showed that the adsorption equilibrium of UHMWPE-g-P (GMA-co-MA)-TETA-GTA fiber for Au(Ⅲ) adsorption could be reached within 180 min and the adsorption capacity reached maximum(355 mg/g) at pH=3. Adsorption kinetic pattern is in good agreement with the pseudo-second-order model, and the Langmuir isotherm model fits the adsorption equilibrium data well. This adsorption reaction is an exothermic reaction entropy reduction.  
        关键词：Au(Ⅲ);Adsorption;Quaternary ammonium functional groups;Ultrahigh molecular weight polyethylene fiber   
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        发布时间：2021-12-10
      • Chunbo ZHU,Xue JIANG,Hongbo WANG,Weidong GAO
        Vol. 34, Issue 3, Pages: 31-37(2016) DOI: 10.11889/j.1000-3436.2016.rrj.34.030302
        摘要：Acrylic acid (AA) monomers were grafted onto polyester fabric by electron beam irradiation to improve the hydrophilic properties. The optimized reaction conditions were as follows: absorbed dose of 195 kGy, AA concentration of 50%, inhibitor concentration of 0.8%, absorbed dose of pre-irradiation process of 43 kGy, and sodium hydroxide concentration of 15 g/L. The Fourier transform infrared spectrometer spectra showed that AA was grafted onto polyester fabric successfully. The (SEM) showed that the surface of the modified polyester fabric was covered with the film of the grafted polymer. Further, the area of film increased with the grafting rate significantly. The moisture regain of polymer fiber increased with the grafting rate according to the test of moisture regain. The moisture regain of grafted fabric reaches 3.51% when the maximum grafting rate is 27.84%. The fabric still has good hydrophilicity after 30 washing cycles with only 1% of weight loss.  
        关键词：Polyester fabric;Acrylic acid;Electron beam irradiation;Grafting percentage;Hydrophilicity   
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        发布时间：2021-12-10
      • Ying WANG,Xufeng HAO,Xinfeng WU,Ruimin ZHOU,Shaojin JIA
        Vol. 34, Issue 3, Pages: 38-45(2016) DOI: 10.11889/j.1000-3436.2016.rrj.34.030303
        摘要：Polycarbonate (PC) membranes with regular and vertical channels were prepared by electron beam (EB) with the methods of masks and oxygenation corrosion. Ubbelohde viscometer, gel permeation chromatography (GPC), differential scanning calorimetry (DSC) and Fourier transform infrared spectroscopy (FT-IR) were used to characterize the structure and properties of irradiated PC. The results showed that the relative molecular weight, number average molecular weight and glass transition temperature of PC decreased with the increasing absorbed doses. Infrared analysis showed that the main chain of PC ruptured after being etched by electron beam. The kinetic analysis showed that the irradiation degradation of PC was a type of non-conventional degradation, giving the theoretical basis for the preparation of PC microporous membrane by electron beam etching.  
        关键词：Electron beam(EB);Etch;Polycarbonate(PC);Microporous membrane;Irradiation degradation   
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        发布时间：2021-12-10
      • Xiangmei MA,Mingxu ZHANG,Fanfei MIN,Bin WANG
        Vol. 34, Issue 3, Pages: 46-52(2016) DOI: 10.11889/j.1000-3436.2016.rrj.34.030304
        摘要：In order to explore the mechanism of action and impact degree of removing organic sulfur from coal by microwave irradiation, the proton nuclear magnetic resonance spectroscopy (1HNMR), Fourier transform infrared spectroscopy (FT-IR) and Raman laser confocal spectroscopy (RLCS) techniques were used to investigate the effect of microwave non-thermal on the structural and performance of the model organic sulfur compounds. The FT-IR results showed that the non-thermal effects really existed and could affect the bond energy distribution, vibration strength and stability of the groups, but only on the molecular mechanisms of polarization of organic sulfur compound, not destroyed any original molecule chemical bond or generated new chemical bonds and groups. 1HNMR revealed that the non-thermal effect influenced the electron density distribution and magnetic environment inside the model compound molecular. The dual polarization characteristics of sulfur compounds changed not only the microscopic electron polarization or atomic polarization, but also the orientation of permanent dipole moment. Raman proved that the microwave non-thermal effect could effectively polarize the sulfur-containing chemical bonds, which weakened the vibration intensity, and thus contributed to the remove of organic sulfur from coal.  
        关键词：Thiols/thioethers;Microwave radiation;Non-thermal effect;Molecular structure   
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        发布时间：2021-12-10
      • Guoqiang YOU,Zhanqi LIU,Wenyu ZHANG,Jianguo ZHENG,Huaipu ZHAO,Yanfeng QU
        Vol. 34, Issue 3, Pages: 53-57(2016) DOI: 10.11889/j.1000-3436.2016.rrj.32.030305
        摘要：Composite materials for tritium were determined through the technique of trapping the permeating tritium with water. Testing on mechanical properties such as tensile experiment was performed for both Polyvinylidene chloride (PVDC) films and composite materials. Chemical performance was determined by calculating the dissolved rate in the acid and alkali, breaking strength, loss rate and stripping strength loss rate. The results showed that the gas tritium permeability through the composite materials was 3.44×10-10 m3/(m2·s), 1/70 relative to the PVC films. The fracture strength of PVDC films was increased by about 20 times, and the warp and weft breaking strength was 721 N. After the immersion of 5 kinds of chemical reagents, the maximum loss ratio of 0.29% and the maximum decrease of the breaking strength were 5.1%. Mechanical properties and chemical performance of tritium proof polymer composite meet the demand of Protective clothing-protective clothing against liquid acids and alkalis(GB 24540-2009).  
        关键词：Composite materials;Permeate;Tritium resistivity   
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        发布时间：2021-12-10

        RADIATION TECHNOLOGY APPLICATION

      • Chen FEI,Xinjin YE,Haiwei ZHANG,Jin LIANG,Wenjia ZHENG
        Vol. 34, Issue 3, Pages: 58-64(2016) DOI: 10.11889/j.1000-3436.2016.rrj.34.030401
        摘要：In order to explore the possibility to identify the irradiated tea by electron spin resonance (ESR), green tea (Huangshan Maofeng Tea) and black tea (Keemun Black Tea) were detected by ESR after irradiation with Co-60 γ-rays. The relations between ESR intensity of the tea samples and absorbed doses as well as storage time were analyzed. It turned out that there was a significant increase of free radicals intensity in all tea samples at low absorbed doses (p<0.01). The relations between the tea ESR intensity and absorbed doses fitted the multinomial growth while the relations between the tea ESR intensity and storage time fitted the power correlation decrease. After storage at room temperature for 70 d, the ESR intensity in irradiated tea decreased to the steady state which was still significantly higher than that in unirradiated tea samples (p<0.01). Therefore, it is possible to use ESR to identify whether the green or black tea was irradiated or not.  
        关键词：Electron spin resonance (ESR);Irradiation;Free radicals;Tea;Detection   
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