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农产品中有害微生物的风险评估研究进展

山东农业科学 2014年第1期46卷 142-147页

作者：孙效乐张树秋谷晓红王文博山东省农业科学院农业质量标准与检测技术研究所/山东省食品质量与安全检测技术重点实验室山东济南250100

通过对近年来国内外有害微生物风险评估技术的研究,分析阐述了有害微生物风险评估工作四个方面(危害识别、危害描述、暴露评估、风险描述)的主要内容与特点,有害微生物风险评估工作中模型建立的主要方法与所使用的软件,以及国内外近年... 详细信息

通过对近年来国内外有害微生物风险评估技术的研究,分析阐述了有害微生物风险评估工作四个方面(危害识别、危害描述、暴露评估、风险描述)的主要内容与特点,有害微生物风险评估工作中模型建立的主要方法与所使用的软件,以及国内外近年来有害微生物风险评估研究的特点。

关键词：风险评估有害微生物蒙特卡洛模拟

Multidiscipline Applications of Triboelectric Nanogenerators for the Intelligent Era of Internet of Things

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Nano-Micro Letters 2023年第1期15卷 252-292页

作者： xiaole Cao Yao Xiong Jia sun Xiaoyin Xie Qijun sun Zhong Lin Wang Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of SciencesBeijing 101400People’s Republic of China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049People’s Republic of China School of Physics and Electronics Central South UniversityChangsha 410083People’s Republic of China School of Chemistry and Chemical Engineering Hubei Polytechnic UniversityHuangshi 435003People’s Republic of China Shandong Zhongke Naneng Energy Technology Co. Ltd.Dongying 7061People’s Republic of China School of Materials Science and Engineering Georgia Institute of TechnologyAtlantaGA 30332USA

In the era of 5G and the Internet of things(IoTs),vari-ous human-computer interaction systems based on the integration of triboelectric nanogenerators(TENGs)and IoTs technologies dem-onstrate the feasibility of sustainable and self-powered functional *** rapid development of intelligent applications of IoTs based on TENGs mainly relies on supplying the harvested mechanical energy from surroundings and implementing active sensing,which have greatly changed the way of human production and daily *** review mainly introduced the TENG applications in multidisci-pline scenarios of IoTs,including smart agriculture,smart industry,smart city,emergency monitoring,and machine learning-assisted artificial intelligence *** challenges and future research directions of TENG toward IoTs have also been *** exten-sive developments and applications of TENG will push forward the IoTs into an energy autonomy fashion.

关键词： Triboelectric nanogenerator Self-powered sensor Internet of things Artificial intelligence Machine learning

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螺旋溜槽摇床联选对气化渣提碳行为研究

中国矿业 2023年第12期32卷 235-241页

作者：孙小乐南凯睢月婷史培阳包钢集团矿山研究院(有限责任公司) 内蒙古包头041000 东北大学多金属共生矿生态化冶金教育部重点实验室辽宁沈阳110819

气化渣作为煤化工行业主要固体排放物,其处理方式直接决定着煤化工行业的可持续性发展前景。如何高效分选气化渣中未燃碳与硅酸盐相组分是气化渣综合利用研究的重点。本文采用螺旋溜槽和摇床联选工艺对气化渣进行了提碳行为研究,使用汉... 详细信息

气化渣作为煤化工行业主要固体排放物,其处理方式直接决定着煤化工行业的可持续性发展前景。如何高效分选气化渣中未燃碳与硅酸盐相组分是气化渣综合利用研究的重点。本文采用螺旋溜槽和摇床联选工艺对气化渣进行了提碳行为研究,使用汉考克效率、固定碳回收率对分选效果进行评价,借助XRD、SEM等手段分析富碳产品性质。研究结果表明,螺旋溜槽初选效果显著,精矿固定碳含量由23.1%升至67.5%,尾矿固定碳含量降至1.6%。螺旋溜槽中矿、尾矿二段选别效果较好,气化渣中未燃碳与硅酸盐相得到进一步分离;螺旋溜槽精矿二段选别效果较差。最终联选生产可得富碳产品和富灰产品,其中,富碳产品产率为29.2%,固定碳含量大于60%,热值为5000 kcal;富灰产品烧失量小于5%,达一级粉煤灰标准。XRD结果表明,富碳产品中无机相主要成分为石英和方解石;SEM结果表明,多孔未燃碳基体中存在少量可分离硅酸盐相,存在二次提质的可能性。气化渣联选工艺在实现未燃碳提质的同时,也为后续制备气化渣基高品质建材提供了基础条件。

关键词：气化渣未燃碳硅酸盐相螺旋溜槽摇床

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Multi-focus image fusion based on block matching in 3D transform domain

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Journal of Systems Engineering and Electronics 2018年第2期29卷 415-428页

作者： YANG Dongsheng HU Shaohai LIU Shuaiqi MA xiaole sun Yuchao Institute of Information Science Beijing Jiaotong UniversityBeijing 100044China Beijing Key Laboratory of Advanced Information Science and Network Technology Beijing 100044China College of Electronic and Information Engineering Hebei UniversityBaoding 071002China The Third Research Institute China Electronics Technology Group CorporationBeijing 100015China

Fusion methods based on multi-scale transforms have become the mainstream of the pixel-level image fusion. However,most of these methods cannot fully exploit spatial domain information of source images, which lead to the degradation of *** paper presents a fusion framework based on block-matching and 3D(BM3D) multi-scale transform. The algorithm first divides the image into different blocks and groups these 2D image blocks into 3D arrays by their similarity. Then it uses a 3D transform which consists of a 2D multi-scale and a 1D transform to transfer the arrays into transform coefficients, and then the obtained low-and high-coefficients are fused by different fusion rules. The final fused image is obtained from a series of fused 3D image block groups after the inverse transform by using an aggregation process. In the experimental part, we comparatively analyze some existing algorithms and the using of different transforms, e.g. non-subsampled Contourlet transform(NSCT), non-subsampled Shearlet transform(NSST), in the 3D transform step. Experimental results show that the proposed fusion framework can not only improve subjective visual effect, but also obtain better objective evaluation criteria than state-of-the-art methods.

关键词： image fusion block matching 3D transform block-matching and 3D(BM3D) non-subsampled Shearlet transform(NSST)

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富碳气化渣表面性质及浮选研究

中国资源综合利用 2024年第8期42卷 103-106页

作者：孙小乐睢月婷南凯史培阳包钢集团矿山研究院(有限责任公司) 内蒙古包头014000 东北大学多金属共生矿生态化冶金教育部重点实验室沈阳110819

气化渣是煤化工行业主要固体废弃物,借助选矿手段可以有效将气化渣中的未燃碳与硅酸盐相分离,增加其工业利用价值。分析了气化渣重选精矿(富碳气化渣)的比表面积、红外光谱仪和X射线光电子能谱,研究了气化渣的可浮性行为。试验结果表明... 详细信息

气化渣是煤化工行业主要固体废弃物,借助选矿手段可以有效将气化渣中的未燃碳与硅酸盐相分离,增加其工业利用价值。分析了气化渣重选精矿(富碳气化渣)的比表面积、红外光谱仪和X射线光电子能谱,研究了气化渣的可浮性行为。试验结果表明,富碳气化渣比表面积为286.32m^(2)/g,平均孔径为3.30nm,其表面含有大量含氧官能团,碳原子与氧原子含量别为52.32%和42.42%,表面亲水性较高。采用月桂酸甲酯和煤油复配捕收剂+十二烷基苯磺酸钠+二步浮选法浮选效果最好,精矿灰分为27.47%,精矿产率为8.23%。

关键词：气化渣比表面积亲水性浮选

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毛栓孔菌菌丝体生长营养条件的优化研究

青岛农业大学学报（自然科学版） 2012年第1期29卷 51-54页

作者：毕旺华田雪梅孙效乐秦丹宋爱荣山东省应用真菌重点实验室青岛农业大学生命科学学院山东青岛266109

采用平板培养法对毛栓孔菌(Trametes hirsuta)菌丝体营养条件进行优化研究,通过单因素和正交试验的方法筛选出菌丝体生长的最佳培养基。试验结果表明:毛栓孔菌菌丝体生长的最适碳源为蔗糖,最佳氮源为酵母膏,最佳的碳氮比是101,最佳的... 详细信息

采用平板培养法对毛栓孔菌(Trametes hirsuta)菌丝体营养条件进行优化研究,通过单因素和正交试验的方法筛选出菌丝体生长的最佳培养基。试验结果表明:毛栓孔菌菌丝体生长的最适碳源为蔗糖,最佳氮源为酵母膏,最佳的碳氮比是101,最佳的无机盐是K2HPO4和Na2SO4,在基础培养基中添加复合维生素对菌丝体的生长影响显著,通过正交试验获得最佳的培养基:蔗糖4%,酵母膏1.3%,磷酸氢二钾0.05%,硫酸钠0.2%。

关键词：毛栓孔菌菌丝体营养条件优化

Auto-ignition of biomass synthesis gas in shock tube at elevated temperature and pressure

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Science Bulletin 2015年第22期60卷 1935-1946页

作者： Linqi Ouyang Hua Li Shuzhou sun xiaole Wang Xingcai Lu Laboratory for Power Machinery and Engineering of Ministry of Education Shanghai Jiao Tong University

Ignition delay times of multi-component biomass synthesis gas （bio-syngas） diluted in argon were measured in a shock tube at elevated pressure （5, 10and 15 bar, 1 bar = 105 Pa）, wide temperature ranges （1,100-1,700 K） and various equivalence ratios （0.5, 1.0, 2.0）. Additionally, the effects of the variations of main constituents （H2：CO = 0.125-8） on ignition delays were investigated. The experimental results indicated that the ignition delay decreases as the pressure increases above certain temperature （around 1,200 K） and vice versa. The ignition delays were also found to rise as CO concentration increases, which is in good agreement with the literature. In addition, the ignition delays of bio-syngas were found increasing as the equivalence ratio rises. This behavior was primarily discussed in present work. Experimental results were also compared with numerical predictions of multiple chemical kinetic mechanisms and Li＇s mechanism was found having the best accuracy. The logarithmic ignition delays were found nonlinearly decrease with the H2 concentration under various conditions, and the effects of temperature, equivalence ratio and H2 concentration on the ignition delays are all remarkable. However, the effect of pressure is rela- tively smaller under current conditions. Sensitivity analysis and reaction pathway analysis of methane showed that R1 （H ＋O2= O -9 OH） is the most sensitive reaction promot- ing ignition and R13 （H ＋O2 （＋M） = HO2 （＋M））, R53（CH3＋H （＋M）= CH4 （＋M））, R54 （CH4＋H= CH3 ＋ H2） as well as R56 （CH4 ＋ OH = CH3 ＋ H2O） are key reactions prohibiting ignition under current experimental conditions. Among them, R53 （CH3 ＋ H （＋M） = CH4 （＋M））, R54 （CH4 ＋ H = CH3 ＋ H2） have the largest posi- tive sensitivities and the high contribution rate in rich mixture. The rate of production （ROP） of OH of R1 showed that OH ROP of R1 decreases sharply as the mixture turns rich. Therefore, the ignition delays become longer as the equiva- lence ratio increases.

关键词： Shock tube Biomass synthesis gas Ignition delay time Sensitivity analysis Reactionpathway analysis

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某型高聚物粘结炸药制备工艺研究

兵工自动化 2018年第1期37卷 76-78页

作者：孙晓乐万力伦刘海伦谭彦威重庆红宇精密工业有限责任公司重庆402760

为了系统研究不同工艺条件对炸药包覆效果的影响,以HMX为单质炸药,采用"溶液水悬浮"法工艺制备某新型高聚物粘结炸药(PBX),分析了分散剂、搅拌速度、温度和蒸馏时间等工艺条件对HMX单质炸药包覆效果的影响。试验结果表明:影响包覆效果... 详细信息

为了系统研究不同工艺条件对炸药包覆效果的影响,以HMX为单质炸药,采用"溶液水悬浮"法工艺制备某新型高聚物粘结炸药(PBX),分析了分散剂、搅拌速度、温度和蒸馏时间等工艺条件对HMX单质炸药包覆效果的影响。试验结果表明:影响包覆效果与包覆药感度的主要因素为分散剂、搅拌速度、温度及钝感剂的加入方式。制备某新型高聚物粘结炸药较佳的工艺条件为:加入分散剂、造粒温度65℃、搅拌速度300 r/min、蒸馏时间30 min、钝感剂外包覆。

关键词：水悬浮法工艺高聚物粘结炸药

Development of an automatic measurement system using atmospheric pressure photoionization ultrahigh-resolution mass spectrometry and application for on-line analysis of particulate matter

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Journal of Environmental Sciences 2024年第4期138卷 516-530页

作者： Yayuan Dong Ranran Liu Ling Xie xiaole Pan Yele sun Lin Wu ZifaWang State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China Center for Excellence in Regional Atmospheric Environment Chinese Academy of SciencesInstitute of Urban EnvironmentXiamen 361021China

On-line chemical characterization of atmospheric particulate matter(PM)with soft ionization technique and ultrahigh-resolution Mass Spectrometry(UHRMS)provides molecular information of organic constituents in real *** we describe the development and application of an automatic measurement system that incorporates PM_(2.5)sampling,thermal desorption,atmospheric pressure photoionization,and UHRMS *** formulas of detected organic compounds were deducted from the accurate(±10 ppm)molecular weights obtained at a mass resolution of 100,000,allowing the identification of small organic compounds in PM_(2.5).Detection efficiencies of 28 standard compounds were determined and we found a high sensitivity and selectivity towards organic amines with limits of detection below 10 *** a proof of principle,PM_(2.5)samples collected off-line in winter in the urban area of Beijing were analyzed using the Ionization Module and HRMS of the *** automatic system was then applied to conduct on-line measurements during the summer time at a time resolution of 2 *** detected organic compounds comprised mainly CHON and CHN compounds below 350 m/*** seasonal variations in elemental composition were observed with shorter carbon backbones and higher O/C ratios in summer than that in *** result is consistent with stronger photochemical reactions and thus a higher oxidation state of organics in *** variation in signal intensity of each formula provides crucial information to reveal its source and formation *** summary,the automatic measurement system serves as an important tool for the on-line characterization and identification of organic species in PM_(2.5).

关键词： PM_(2.5) Chemical composition On-line measurement technique High resolution mass spectrometry