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2型糖尿病患者血清胎盘生长因子水平与颈动脉粥样硬化的相关性研究

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中国糖尿病杂志 2015年第5期23卷 422-425页

作者：张萍成兴波鲁燕苏州大学附属第一医院内分泌科 215006

目的探讨T2DM患者血清胎盘生长因子(PLGF)与颈动脉粥样硬化(CAS)的关系。方法采用ELISA检测T2DM组、T2DM+CAS组及NC组血清PLGF、FPG、血脂、FIns、HbA1c、高敏C反应蛋白(hsC-RP)、TNF-α及IL-6水平,计算BMI和胰岛素抵抗指数(HOMA-IR)。... 详细信息

目的探讨T2DM患者血清胎盘生长因子(PLGF)与颈动脉粥样硬化(CAS)的关系。方法采用ELISA检测T2DM组、T2DM+CAS组及NC组血清PLGF、FPG、血脂、FIns、HbA1c、高敏C反应蛋白(hsC-RP)、TNF-α及IL-6水平,计算BMI和胰岛素抵抗指数(HOMA-IR)。结果T2DM、T2DM+CAS组血清PLGF水平均高于NC组[(45.35±13.00),(59.24±11.05)vs(27.30±10.22)pg/ml](P<0.01)。T2DM+CAS组血清PLGF水平高于T2DM组(P<0.01)。T2DM组血清PLGF水平与TC、LDL-C、hsC-RP、IL-6呈正相关。LDL-C、IL-6是血清PLGF水平的独立影响因素。PLGF是发生CAS风险的预测因素。结论 T2DM合并CAS患者血清PLGF高于正常人和单纯T2DM患者,且与慢性炎症相关。PLGF可能参与了T2DM患者CAS的发生发展。

关键词：糖尿病 2型胎盘生长因子颈动脉粥样硬化

Recycling waste crystalline-silicon solar cells: Application as high performance Si-based anode materials for lithium-ion batteries

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Journal of Central South University 2022年第9期29卷 2888-2898页

作者： WAng Qi MEng Bi-cheng DU Yue-yong XU Xiang-qun ZHOU Zhe Boon K.ng ZhanG Zong-liang JIAng Liang-xing LIU Fang-yang School of Metallurgy and Environment Central South UniversityChangsha 410083China School of Metallurgical Engineering Xi’an University of Architecture and TechnologyXi’an 710311China School of Engineering&Technology Central Queensland UniversityMackayQLD 4740Australia Department of Materials Science&Engineering University of UtahSalt Lake CityUtah84112USA

Recycling useful materials such as Ag, Al, Sn, Cu and Si from waste silicon solar cell chips is a sustainable project to slow down the ever-growing amount of waste crystalline-silicon photovoltaic panels. However, the recovery cost of the above-mentioned materials from silicon chips via acid-alkaline treatments outweights the gain ***, we propose a new proof-of-concept to fabricate Si-based anodes with waste silicon chips as raw *** from waste silicon chips were prepared with the high-energy ball milling followed by introducing carbon nanotubes and N-doped carbon into the nanoparticles, which amplifies the electrochemical properties. It is explored that Al and Ag elements influenced electrochemical performance respectively. The results showed that the Al metal in the composite possesses an adverse impact on the electrochemical performance. After removing Al, the composite was confirmed to possess a pronounced durable cycling property due to the presence of Ag, resulting in significantly more superior property than the composite having both Al and Ag removed.

关键词： waste solar panels recycling Si-based anodes lithium-ion batteries

Novel SNP markers on ginsenosides biosynthesis functional gene for authentication of ginseng herbs and commercial products

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Chinese Journal of Natural Medicines 2020年第10期18卷 770-778页

作者： WU Wen-Ru cheng Chun-Song cheng Qi-Qing LAO Chi-Chou CUI Hao TAng Zi-Yu OUYAng Yue LIU Liang ZHOU Hua State Key Laboratory of Quality Research in Chinese Medicine Faculty of Chinese MedicineMacao University o f Science and TechnologyMacao 999078China School of Chinese Pharmaceutical Sciences Guangzhou University of Chinese MedicineGuangzhou 510006China Joint Laboratory for Translational Cancer Research of Chinese Medicine of the Ministry of Education of the People's Republic of China Macao University of Science and TechnologyMacao 999078China

Panax ginseng and Panax quinquefolius have similar bioactive components and morphological characteristics, but they are known to have different medicinal values, high-sensitive and accurate method is expected to identify the sources of ginseng products and evaluate the quality, but with a huge challenge. Our established UHPLC-TOF/MS method coupled with orthogonal partial least squares discriminant analysis(OPLS-DA) model based on 18 ginsenosides was applied to discriminate the sources of raw medicinal materials in ginseng products, and nested PCR strategy was used to discover 6 novel single nucleotide polymorphism(SNP)sites in functional dammarenediol synthase(DS) gene for genetic authentication of P. ginseng and P. quinquefolius for the first ***-DA model could identify the sources of raw ginseng materials are real or not. SNP markers were applied to identify ginseng fresh samples as well as commercial products, and proved to be successful. This established molecular method can tell exact source information of adulterants, and it was highly sensitive and specific even when total DNA amount was only 0.1 ng and the adulteration was as low as 1%. Therefore, this study made an attempt at the exploration of new type SNP marker for variety authentication and function regulation at the same time, and the combination of chemical and molecular discrimination methods provided the comprehensive evaluation and authentication for the sources of ginseng herbs and products.

关键词： Panax ginseng Panax quinquefolius UHPLC-TOF/MS Dammarenediol synthase Nested PCR SNP

Variation of toxic pollutants emission during a feeding cycle from an updraft fixed bed gasifier for disposing rural solid waste

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Chinese Journal of Chemical Engineering 2018年第3期26卷 608-613页

作者： Ming Lei Jing Hai Jiang cheng Jiawei Lu Jieru Zhang Tao You School of Chemistry and Chemical Engineering South China University of Technology South China Institute of Environmental Sciences Ministry of Environmental Protection (MEP)

The variation of toxic pollutants emission during a feeding cycle was examined by field monitoring from a batch feeding updraft fixed bed gasifier for disposing rural domestic solid waste. Results showed that the content of oxygen in flue gas gradually increased, while SO_2 and HCl in flue gas decreased with time after feeding in a whole feeding cycle. Although large amount of CO was produced during the gasifying, low CO content in flue gas could be obtained after the heat treatment with an electric heating device. The distribution characteristics of dioxin congeners in flue gas indicted the re-synthesis of dioxins after flue gas heating, and the increase of oxygen promoted the synthesis of dioxins. The emission content of dioxins could meet the standard(0.1 ng I-TEQ·m^(-3),GB18458-2014) of China when the oxygen content was controlled below 8.3%. Hence, for a batch feeding gasifier,low oxygen condition should be offered by reducing air intake at the later stage of feeding cycle in order to decrease the re-synthesis of dioxins after the flue gas heating.

关键词： Updraft fixed bed gasifier Solid waste Pollutants Dioxins Emission Variation

PDMS Rod-SBSE System Coupled with Gas Chromatography for Determination of PAHs in Aqueous Samples

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Chemical Research in Chinese Universities 2011年第5期27卷 742-745页

作者： cheng Chuan-xian PEI Hai-rong LAN Xiao-zheng College of Chemistry and Material Science Shandong Agricultural University Tai ＇an 2 71018 P. R. China

A method for the analysis of trace polycyclic aromatic hydrocarbons（PAHs） in aqueous samples has been established by polydimethylsiloxane（PDMS） rod aided stir bar sorptive extraction（SBSE）. The homemade PDMS rod has a size of 30 mm×3 mm o.d. with a volume of ca. 200 μL, stable in thermal desorption process. The enriched PAHs by the PDMS rod were released in a homemade thermal desorption system coupled with gas chromatography. Experimental parameters for extraction of six PAHs were optimized including extraction time, pH, ionic strength and temperature of solution. The procedure has good recoveries of 80.0%―100.3% and very low limits of detection of 4.0―33 ng/L. PAHs in rain and river water were analyzed by this method.

关键词： Polydimethylsiloxane(PDMS) rod Stir bar sorptive extraction(SBSE) Polycyclic aromatic hydrocarbon

Pollution levels and characteristics of phthalate esters in indoor air of offices

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Journal of Environmental Sciences 2015年第2期27卷 157-162页

作者： Min Song Chenchen Chi Min Guo Xueqing Wang Lingxiao cheng Xueyou Shen College of Environmental & Resource Sciences Zhejiang University Chinese Research Academy of Environmental Sciences The Xinhua Hospital of Zhejiang Province Zhejiang Provincial Key Laboratory of Organic Pollution and Control

The pollution status and characteristics of PAEs（phthalate esters） were investigated in indoor air of offices, and PAEs of both gas-phase and particulate-phase were detected in all the samples. The concentration（sum of the gas phase and the particulate phase） was4748.24 ng/m3, ranging between 3070.09 and 6700.14 ng/m3. Diethyl phthalate, dibutyl phthalate, and di（2-ethylhexyl） phthalate were the most abundant compounds, together accounting for 70% of the ∑ 6PAEs. Dividing the particulate-phase PAEs into four size ranges（〈 2.5, 2.5–5, 5–10, 〉 10 μm）, the result indicated that PAEs in PM2.5were the most abundant,with the proportion of 72.64%. In addition, the PAE concentration in PM2.5correlated significantly with the total particulate-phase PAEs（R2= 0.85）. Thus, the amount of PAEs in PM2.5can be estimated from the total amount of particulate-phase PAEs using this proportion. In a comparison between the offices and a newly decorated study room, it was found that pollution characteristics were similar between these two places. Thus, it is implied that the PAE concentration decreased by 50% 2 yr after decorating.

关键词： Phthalate esters Pollution status Particle size distribution Indoor air Office

Photodegradation of methylmercury in the water body of the Three Gorges Reservoir

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Science China Chemistry 2015年第6期58卷 1073-1081页

作者： Rongguo Sun Dingyong Wang Wen Mao Shibo Zhao cheng Zhang Xiang Zhang Chongqing Key Laboratory of Soil Multiscale Interfacial Process College of Resource and Environment Southwest University School of Chemistry and Material Guizhou Normal University Chongqing Key Laboratory of Agricultural Resources and Environment

Biogeochemical cycling of mercury in the young Three Gorges Reservoir （TGR）, China, is strongly considered. Although methylmercury （MMHg） photodegradation （PD） is an important process involved in mercury cycling in this zone, little is known about this process. In situ incubation experiments were therefore performed to quantify the effect of different wave- length radiations and environmental factors on the PD process of MMHg in the water bodies of TGR. It was found that the ef- fect of solar radiation on MMHg PD was highly dependent on wavelength and water depth. All PD-rate constants resulting from each wavelength range decreased rapidly with water depth. For surface water, UV-A radiation （320-400 nm） was the key driver, accounting for 49%-62% of MMHg PD. For the entire water column, both photosynthetically active radiation （PAR, 400-700 nm） and UV-A were responsible for MMHg PD. MMHg PD fluxes peaked in summer （7.5-18 ng m-2 d-1）, followed by spring （3.3-8.0 ng m-2 d-1）, autumn （1.0-2.7 ng m-2 d-1）, and winter （0.060-0.15 ng m-2 d-1）. The annual fluxes of MMHg PD were estimated to be 1.1-2.8 μg m-2 at. Filtering the reservoir water and amending it with chemicals （i.e., CV, NO C, and dissolved organic matter （DOM）） showed significant effects on MMHg PD rate constants. Stepwise regression analysis showed that intensity of solar radiation, suspended particulate matter （SPM）, DOM, CI-, and NO3- were involved in the PD process. Path analysis clarified the relationship between MMHg PD rate constants and environmental variables, as well as the comparative strength of direct and indirect relationships among variables. The results are of great importance for understanding MMHg cycling characteristics in TGR and also facilitate the understanding of the underlying process, MMHg PD, in natural waters.

关键词： methylmercury photodegradation influencing factor stepwise regression analysis path analysis Three GorgesReservoir

Mercury bioaccumulation in fish in an artificial lake used to carry out cage culture

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Journal of Environmental Sciences 2019年第4期31卷 352-359页

作者： Yongmin Wang Qing Xie Qinqin Xu Jinping Xue cheng Zhang Dingyong Wang College of Resources and Environment Southwest University Chongqing Key Laboratory of Agricultural Resources and Environment

As a global toxic pollutant,mercury(Hg)bioaccumulation within food chain could be influenced by human *** typical fish species were collected from Changshou Lake,an artificial lake used to carry out cage fish culture,to investigate the C/N isotopic compositions and Hg bioaccumulation in *** results showed that the total Hg(THg)and methylmercury(MeHg)levels in fish muscles((56.03±43.96)and(32.35±29.57)ng/g,wet weight),comparable with those in most studies in China,were significantly lower than the international marketing limit(0.5 mg/kg).Past human input for cage culture in this lake led to abnormal^(15)N enrichment in food chain,as the quantitative trophic levels based onδ^(15)N were different with that classified by feeding *** phenomenon subsequently demonstrated that it should be considered thoughtfully with respect to the application of the traditional method for understanding Hg bioaccumulation power by the slope of log_(10)[Hg]withδ^(15)N regression in specific water body(i.e.,Changshou Lake).In addition,no significant linear correlation between Hg and body weight or length of some fish species was observed,suggesting that the fish growth in the eutrophic environment was disproportionate with Hg bioaccumulation,and fish length or weight was not the main factor affecting Hg transfer with food *** occurrence of human disturbance in aquatic system presents a challenge to a better understanding of the Hg bioaccumulation and biomagnification within the food chain.

关键词： Mercury Methylmercury Human disturbed lake Bioaccumulation N enrichment

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不同刚度约束对能量桩应力和位移的影响研究

岩土力学 2018年第11期39卷 4261-4268页

作者：王成龙刘汉龙孔纲强吴宏伟李建斌重庆大学土木工程学院重庆400045 重庆大学山地城镇建设与新技术教育部重点试验室重庆400045 河海大学土木与交通学院江苏南京210098 香港科技大学土木与环境工程系

能量桩是一种在传递上部建筑荷载的同时获取地热能源的新技术,其实际工作过程中,热荷载会引起桩体的膨胀或收缩,而桩顶建筑和桩底持力层则会对桩体变形产生约束,进一步影响桩体的应力和位移,但是目前对该问题的研究却十分有限。基于模... 详细信息

能量桩是一种在传递上部建筑荷载的同时获取地热能源的新技术,其实际工作过程中,热荷载会引起桩体的膨胀或收缩,而桩顶建筑和桩底持力层则会对桩体变形产生约束,进一步影响桩体的应力和位移,但是目前对该问题的研究却十分有限。基于模型试验和数值模拟方法,对桩顶和桩底不同约束条件下两种埋管形式(单U和W型)的桩体位移和热应力进行了分析,并进一步探讨了位移零点随桩顶和桩底约束条件的变化规律。研究结果表明,随着桩顶上部荷载约束刚度的增大,桩体位移零点上移,桩体热应力随着深度增大而减小;随着桩端土体约束刚度的增大,桩体位移零点下移,桩体热应力随着深度增大而增大;相较于无外荷载,工作荷载作用下位移零点上移。

关键词：桩基能量桩热力学特性模型试验数值模拟