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| 1 | Particle number concentration, size distribution and chemical composition during haze and photochemical smog episodes in Shanghai显示文摘The aerosol number concentration and size distribution as well as size-resolved particle chemical composition were measured during haze and photochemical smog episodes in Shanghai in 2009.The number of haze days accounted for 43%,of which 30%was severe(visibility<2 km)and moderate(2 km≤visibility<3 km)haze,mainly distributed in winter and spring.The mean particle number concentration was about 17,000/cm3in haze,more than 2 times that in clean days.The greatest increase of particle number concentration was in 0.5–1μm and 1–10μm size fractions during haze events,about 17.78times and 8.78 times those of clean days.The largest increase of particle number concentration was within 50–100 nm and 100–200 nm fractions during photochemical smog episodes,about 5.89 times and 4.29 times those of clean days.The particle volume concentration and surface concentration in haze,photochemical smog and clean days were102,49,15μm3/cm3and 949,649,206μm2/cm3,respectively.As haze events got more severe,the number concentration of particles smaller than 50 nm decreased,but the particles of 50–200 nm and 0.5–1μm increased.The diurnal variation of particle number concentration showed a bimodal pattern in haze days.All soluble ions were increased during haze events,of which NH4+,SO42-and NO3-increased greatly,followed by Na+,K+,Ca2+and Cl-.These ions were very different in size-resolved particles during haze and photochemical smog episodes. | Xuemei Wang Jianmin Chen Tiantao Cheng Renyi Zhang Xinming Wang | 2014 | Journal of Environmental Sciences2014，26，9： | 17 |
| 2 | Effects of calcined aluminum salts on the advanced dewatering and solidification/stabilization of sewage sludge显示文摘The high moisture content (80%) in the sewage dewatered sludge is the main obstacle to disposal and recycling. A chemical dewatering and stabilization/solidification (S/S) alternative for the sludge was developed, using calcined aluminum salts (AS) as solidifier, and CaCl 2 , Na 2 SO 4 and CaSO 4 as accelerators, to enhance the mechanical compressibility making the landfill operation possible. The properties of the resultant matrixes were determined in terms of moisture contents, unconfined compressive strength, products of hydration, and toxicity characteristics. The results showed that AS exhibited a moderate pozzolanic activity, and the mortar AS 0 obtained with 5% AS and 10% CaSO 4 of AS by weight presented a moisture contents below 50%–60% and a compressive strength of (51.32 ± 2.9) kPa after 5–7 days of curing time, meeting the minimum requirement for sanitary landfill. The use of CaSO 4 obviously improved the S/S performance, causing higher strength level. X-ray diffraction, scanning electron microscopy and thermogravimetry- differential scanning calorimetry investigations revealed that a large amount of hydrates (viz., gismondine and CaCO 3 ) were present in solidified sludge, leading to the depletion of evaporable water and the enhancement of the strength. In addition, the toxicity characteristic leaching procedure (TCLP) and horizontal vibration (HJ 557-2009) leaching test were conducted to evaluate their environmental compatibility. It was found that the solidified products conformed to the toxicity characteristic criteria in China and could be safely disposed of in a sanitary landfill. | Guangyin Zhen Xiaofei Yan Haiyan Zhou Hua Chen Tiantao Zhao Youcai Zhao | 2011 | Journal of Environmental Sciences2011，23，7： | 15 |
| 3 | Laparoscopic versus open pancreaticoduodenectomy for pancreatic ductal adenocarcinoma:a propensity score matching analysis显示文摘Background:A growing body of evidence supports the use of laparoscopic pancreaticoduodenectomy(LPD)as an efficient and feasible surgical technique.However,few studies have investigated its applicability in pancreatic ductal adenocarcinoma(PDAC),and the long-term efficacy of LPD on PDAC remains unclear.This study aimed to compare the short-and long-term outcomes between LPD and open pancreaticoduodenectomy(OPD)for PDAC.Methods:The data of patients who had OPD or LPD for PDAC between January 2013 and September 2017 were retrieved.Their postoperative outcomes and survival were compared after propensity score matching.Results:A total of 309 patients were included.After a 2:1 matching,93 cases in the OPD group and 55 in the LPD group were identified.Delayed gastric emptying(DGE),particularly grade B/C DGE,occurred less frequently in the LPD group than in the OPD group(1.8%vs.36.6%,P<0.001;1.8%vs.22.6%,P=0.001).The overall complication rates were significantly lower in the LPD group than in the OPD group(49.1%vs.71.0%,P=0.008),whereas the rates of major complications were similar(10.9%vs.14.0%,P=0.590).In addition,the median overall survival was comparable between the two groups(20.0 vs.18.7 months,P=0.293).Conclusion:LPD was found to be technically feasible with efficacy similar to OPD for patients with PDAC. | Wentao Zhou Weiwei Jin Dansong Wang Chao Lu Xuefeng Xu Renchao Zhang Tiantao Kuang Yucheng Zhou Wenchuan Wu Dayong Jin Yiping Mou Wenhui Lou | 2019 | Cancer Communications2019，39，1： | 14 |
| 4 | Chemical properties and origin of dust aerosols in Beijing during springtime显示文摘Ground observation of dust aerosols was conducted in Beijing in the spring of 2005 in order to investigate the element composition and origin of mineral dust. Mass concentrations of most mineral elements of particles increased during dust events. Mineral elements were predominant in the sums of total element loadings in both dusty and non-dusty days. Mg, Si, Fe, Al or Ti can be used as an indicator of dust out?ow; Cl can be viewed as an evidence of dust particles mixing with anthropogenic emissions. Mineral and pollutant elements showed a bimodal mass particle-size distribution (MSD) in non-dusty days, and a trimodal distribution in dusty days, but their peak concentrations fell in different size stages. Zn and S were mainly enriched in fine particles, whereas Cl was enriched in medium particles, but most mineral elements and Cu were enriched in coarse particles. Mineral elements were dominated by crustal material in dusty even non-dusty days, but pollutant elements were from non-crustal material including local and remote sources. Back trajectory analysis indicated that dust particles in Beijing mainly originated from the Gobi and desert regions of Mongolian and northern China. | Renjian Zhang Zhiwei Han Tiantao Cheng Jun Tao | 2009 | Particuology2009，7，1： | 13 |
| 5 | Co-inhibition of methanogens for methane mitigation in biodegradable wastes显示文摘The inhibition effects and mechanisms of chlorinated methane and acetylene on methanogenesis in the anaerobic digestion process of the biodegradable wastes were investigated.It was found that both chloroform and acetylene could effectively inhibit methanogens while the biodegradability of the wastes was not affected.Acetylene inhibited the activity of methanogens,while chloroform inhibited metabolic process of methanogenesis.A central composite design(CCD) and response surface regression analysis(RSREG) were employed to determine the optimum conditions and interaction effects of chloroform and acetylene in terms of inhibition effciency,production of volatile fatty acids(VAF) and molar ratio of propionic acid to acetic acid.Chloroform had significant effect on enhancing the production of VFA(F = 121.3;p < 0.01),and acetylene promoted the inhibition effciency(F = 99.15;p < 0.05) more effectively than chloroform(F = 9.72;p > 0.05).In addition,a maximum molar ratio of propionic acid to acetic acid of 1.208 was estimated under the optimum conditions of chloroform concentration of 9.05 mg/kg and acetylene concentration of 3.6×10-3(V/V).Hence,methanogens in the wastes can be inhibited while the stabilization process of the biodegradable wastes can still work well,as propionic acid generated during the inhibition process could hardly be utilized by methanogens. | ZHAO Tiantao ZHANG Lijie CHEN Haoquan ZHAO Youcai | 2009 | Journal of Environmental Sciences2009，21，6： | 12 |
| 6 | Enhanced dewatering characteristics of waste activated sludge with Fenton pretreatment: effectiveness and statistical optimization显示文摘在这个工作,废物的提高的 dewaterabing 特征用 Fenton 激活污泥预告的处理以有效性和统计优化被调查。反应表面方法( RSM )和中央合成设计(电荷耦合器件)被使用评估并且优化重要运作的参数的有效性,即, H <潜水艇class=“ a-plus-plus ”> 2 O <潜水艇class=“ a-plus-plus ”> 2 集中, Fe <啜class=“ a-plus-plus ”>2+集中和起始的 pH 价值。一个重要二次的多项式模型被获得(R < 啜 class= “ a-plus-plus ” > 2 = 0.9189 ) 与毛状的吸时间(CST ) 减小效率作为反应。数字优化基于愿望功能被执行。为 H 的最佳价值 < 潜水艇 class= “ a-plus-plus ” > 2 O < 潜水艇 class= “ a-plus-plus ” > 2 , Fe < 啜 class= “ a-plus-plus ” >2+, 和起始的 pH 被发现是 178 mg?? | Guangyin ZHEN Xueqin LU Baoying WANG Youcai ZHAO Xiaon CHAI Dongjie NIU Tiantao ZAO | 2014 | Frontiers of Environmental Science & Engineering2014，8，2： | 7 |
| 7 | Characterization of Methylocystis strain JTA1 isolated from aged refuse and its tolerance to chloroform显示文摘To accelerate the efficiency of methane biodegradation in landfills,a Gram-negative,rod-shaped,non-motile,non-spore-forming bacterium,JTA1,which can utilize methane as well as acetate,was isolated from the Laogang MSW landfills,Shanghai,China.Strain JTA1 was a member of genus Methylocystis on the basis of 16S rRNA and pmoA gene sequence similarity.The maximum specific cell growth rates(μmax=0.042 hr-1,R2=0.995) was derived through Boltzmann simulation,and the apparent half-saturation constants(Km(app)=7.08mmol/L,R2=0.982) was calculated according to Michaelis-Menton hyperbolic model,indicating that Methylocystis strain JTA1 had higher-affinity potential for methane oxidation than other reported methanotrophs.By way of adding the strain JTA1 culture,the methane consumption of aged refuse reached 115mL,almost two times of control experiment.In addition,high tolerance of Methylocystis strain JTA1 to chloroform could facilitate the methane oxidation of aged refuse bio-covers.At the chloroform concentration of 50mg/L,the methane-oxidation rate of bio-cover reached 0.114mL/(day·g),much higher than the highest rate,0.0135mL/(day·g),of reported bio-covers.In conclusion,strain JTA1 opens up a new possibility for environmental biotechnology,such as soil or landfills bioremediation and wastewater decontamination. | Tiantao Zhao Lijie Zhang Yunru Zhang Zhilin Xing Xuya Peng | 2013 | Journal of Environmental Sciences2013，25，4： | 7 |
| 8 | Optical properties and chemical composition of PM_(2.5) in Shanghai in the spring of 2012显示文摘The semi-diurnal mean aerosol mass concentration, chemical composition, and optical properties of PM2.5were investigated in Shanghai during the spring of 2012. Slight pollution was observed during the study period. The average PM2.5 concentration was 64.11 土 22.83(xg/m3. The mean coefficients of extinction,scattering, and absorption at 532 nm were 125.9 士 78.5,91.1 士 56.3,and 34.9 士 23.6 Mm-1, respectively. A relatively low mean single scattering albedo at 532 nm(0.73 士 0.04) and low level of elemental carbon(EC,2.67 士 1.96 |xg/m3) suggested that the light absorption was enhanced due to the internal mixing of the EC.Sulfate contributed the most to aerosol light scattering in Shanghai. The chemical composition of PM2.5was dominated by particulate organic matter, sulfate, nitrate, ammonium, and EC. Anthropogenic sources made a significant contribution to the emission and loading of the particulate pollutants. A relatively good correlation between the aerosol chemical composition and the cloud condensation nuclei(CCN) activation indicated that aerosol chemistry is an important factor that influences the saturated hygroscopicity and growth of the aerosol. | Guanghan Huang Tiantao Cheng Renjian Zhang Jun Tao Chunpeng Leng Yunwei Zhang Shuping Zha Deqin Zhang Xiang Li Chunyang Xu | 2014 | Particuology2014，12，2： | 4 |
| 9 | Comparison of aerosol characteristics during haze periods over two urban agglomerations in China using CALIPSO observations显示文摘 | Qiong Liu Xiaojun Ma Yanrong Yu Yan Qin Yonghang Chen Yanming Kang Hua Zhang Tiantao Cheng Yan Ling Yujie Tang | 2017 | Particuology2017，15，4： | 2 |
| 10 | Impacts of biomass-burning on aerosol properties of a severe haze event over Shanghai显示文摘Anthropogenic aerosols have significant impacts on the environment and human health in the Yangtze River Delta region,one of the most densely populated regions in the world.A biomass-burning plume swept across this area(Shanghai) in May 2009,leading to changes in the physical and optical properties of aerosols,which were investigated using ground-based remote sensing and in situ measurements via comparisons with dust pollution and background conditions.Experiments show that the biomass-burning plume led to an increase in the average aerosol optical depth(AOD) at 500 nm from 0.73 to 1.00(37%higher),an absorption Angstrom exponent(AAE) of 1.48,and an increase in the Angstrom exponent(α) up to 1.53.Furthermore,local dust aerosols derived from road dust and/or construction dust also led to higher values of AOD(2.68) and AAE(2.16),and a daily average value of α of 1.05.For the biomass-burning plume,the aerosol particles exhibited significant variations in short-wavelength spectra.The single scattering albedo at 670 nm decreased remarkably under the influence of the biomass-burning plume,indicating the significant absorptive ability of the biomass-burning pollution and higher ratio of absorption aerosols within the plume.Under the effects of the biomass-burning,the volume concentration of fine-mode aerosols increased significantly and the PM-fine/PM-coarse volume concentration ratio reached 12.33.This relatively large change in fine-mode particles indicates that biomass-burning has a greater impact on fine-mode aerosols than on coarse-mode aerosols. | Qianshan He Xiaoyan Zhao Jing Lu Guangqiang Zhou Hequn Yang Wei Gao Wei Yu Tiantao Cheng | 2015 | Particuology2015，13，3： | 2 |
| 11 | Insights into summertime haze pollution events over Shanghai based on online water-soluble ionic composition of aerosols显示文摘 | Huanhuan Du Lingdong Kong Tiantao Cheng Jianmin Chen Jianfei Du Ling Li Xiangao Xia Chunpeng Leng Guanghan Huang | 2011 | Atmospheric Environment2011，，29： | 2 |
| 12 | Population amount risk assessment of extreme precipitation-induced landslides based on integrated machine learning model and scenario simulation显示文摘In this study,the future landslide population amount risk(LPAR)is assessed based on integrated machine learning models(MLMs)and scenario simulation techniques in Shuicheng County,China.Firstly,multiple MLMs were selected and hyperparameters were optimized,and the generated 11 models were crossintegrated to select the best model to calculate landslide susceptibility;by calculating precipitation for different extreme precipitation recurrence periods and combining the susceptibility results to assess the landslide hazard.Using the town as the basic unit,the exposure and vulnerability of the future landslide population under different Shared Socioeconomic Pathways(SSPs)scenarios in each town were assessed,and then combined with the hazard to estimate the LPAR in 2050.The results showed that the integrated model with the optimized random forest model as the combination strategy had the best comprehensive performance in susceptibility assessment.The distribution of hazard classes is similar to susceptibility,and with an increase in precipitation,the low-hazard area and high-hazard decrease and shift to medium-hazard and very high-hazard classes.The high-risk areas for future landslide populations in Shuicheng County are mainly concentrated in the three southwestern towns with high vulnerability,whereas the northern towns of Baohua and Qinglin are at the lowest risk class.The LPAR increased with the intensity of extreme precipitation.The LPAR differs significantly among the SSPs scenarios,with the lowest in the“fossil-fueled development(SSP5)”scenario and the highest in the“regional rivalry(SSP3)”scenario.In summary,the landslide susceptibility model based on integrated machine learning proposed in this study has a high predictive capability.The results of future LPAR assessment can provide theoretical guidance for relevant departments to cope with future socioeconomic development challenges and make corresponding disaster prevention and mitigation plans to prevent landslide risks from a developmental perspective. | Guangzhi Rong Kaiwei Li Zhijun Tong Xingpeng Liu Jiquan Zhang Yichen Zhang Tiantao Li | 2023 | Geoscience Frontiers2023，14，3： | 2 |
| 13 | Physical characterization of aerosol particles during the Chinese New Year’s firework events显示文摘 | Min Zhang Xuemei Wang Jianmin Chen Tiantao Cheng Tao Wang Xin Yang Youguo Gong Fuhai Geng Changhong Chen | 2010 | Atmospheric Environment2010，，39： | 1 |
| 14 | Physical characterization of aerosol particles during the Chinese New Year’s firework events显示文摘 | Min Zhang Xuemei Wang Jianmin Chen Tiantao Cheng Tao Wang Xin Yang Youguo Gong Fuhai Geng Changhong Chen | 2010 | Atmospheric Environment2010，，39： | 1 |
| 15 | Lactate dehydrogenase A is overexpressed in pancreatic cancer and promotes the growth of pancreatic cancer cells显示文摘 | Yefei Rong Wenchuan Wu Xiaoling Ni Tiantao Kuang Dayong Jin Dansong Wang Wenhui Lou | 2013 | Tumor Biology2013，，： | 1 |
| 16 | A la-boratory study of agricultural crop residue combustion in Chi-na: emission factors and emission inventory 显示文摘 | ZHANG Hefang YE Xingnan CHENG Tiantao | 2008 | AtmosphericEnvironment2008，42，36： | 1 |
| 17 | Air stripping of ammonia in a water-sparged aerocyclone reactor显示文摘 | Xuejun Quan Fuping Wang Qinghua Zhao Tiantao Zhao Jinxin Xiang | 2009 | Journal of Hazardous Materials2009，，2： | 1 |
| 18 | A laboratory study of agricultural crop residue combustion in China:Emission factor and emission inventory显示文摘 | Zhang Hefeng Ye Xingnan Cheng Tiantao | 2008 | Atmospheric Environment2008，42，36： | 1 |
| 19 | Optical properties and chemical composition of PM 2.5 in Shanghai in the spring of 2012显示文摘 | Guanghan Huang Tiantao Cheng Renjian Zhang Jun Tao Chunpeng Leng Yunwei Zhang Shuping Zha Deqin Zhang Xiang Li Chunyang Xu | 2013 | Particuology2013，，： | 1 |
| 20 | Alaboratory study of agricultural crop residue combustionin China: Emission factor and emission inventory 显示文摘 | Zhang Hefeng Ye Xingnan Cheng Tiantao | 2008 | Atmospheric Environment2008，42，36： | 1 |
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