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Receiver function study of the crustal structure of Northeast China:Seismic evidence for a mantle upwelling beneath the eastern flank of the Songliao Basin and the Changbaishan region

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Earthquake Science 2011年第1期24卷 27-33页

作者： Huafeng liu fenglin Niu Department of Earth Science Rice University Houston TX 77005 USA

Northeast China is a unique place to study intra-plate volcanism. We analyzed P-wave receiver function data recorded by 111 permanent broadband seismic stations in Northeast China. The results show that the crustal thickness varies from 27.9 km beneath the eastern flank of the Songliao Basin to 40.7 km beneath the Great Xing＇an Range region. The large depth variations of the Moho can be largely but not completely explained by surface topography. The residual Moho depth calculated based on the Airy＇s isostasy model indicates that the Moho is dynamically uplifted by 〈3 km beneath the eastern flank of the Songliao Basin and the Changbaishan region. We suggest that a mantle upwelling, which has been proposed by several recent seismic studies, might have caused the uplift.

关键词： receiver function Moho Northeast China mantle upwelling

Review of the powder and decoction formulae in Traditional Chinese Medicine based on pharmacologically active substances and clinical evidence

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Journal of Traditional Chinese Medicine 2015年第3期35卷 355-360页

作者： liu Qihua Wen Jin Peng Zhiping liu fenglin Tong Xiaolin Department of Pharmacy and Endocrinology Guang'an men HospitalChina Academy of Chinese Medical Sciences Department of Medical Harbin Emergency Center

Powder formulae are an indispensable part of prescription in Traditional Chinese *** formulae are characterized by good therapeutic efficacy and low dose used for their *** of the therapeutic application and material basis of pharmacological active substance in power formulae can enable the development of new powder *** in turn can contribute to reduction of wastage of drug material,relief of shortage of herbal medicinal resources and sustainable development of Traditional Chinese Medicine.

关键词： Powders Decoctions Drug prescriptions Pharmacology Medicine,Chinese traditional Review

The clinicopathologic features of intraductal papillary mucinous neoplasms of the pancreas

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Frontiers of Medicine 2007年第2期1卷 121-125页

作者： QIN Xinyu liu fenglin Department of General Surgery Zhongshan HospitalFudan UniversityShanghai 200032China

Since first described in 1982,intraductal papillary mucinous neoplasm(IPMN)has been the preferred term to describe the proliferation of the pancreatic ductal *** is totally different from pancreatic carcinoma in epi demiology,histology,pathology and *** to the site of involvement,IPMNs are classified into three categories,*** duct type,branch duct type,and combined *** branch duct IPMNs are benign,whereas the other two types are often malignant.A large branch duct IPMN and marked dilation of the main pancreatic duct indicate the presence of adenoma at *** additional existence of large mural nodules increases the possibility of malignancy in all *** prognosis is more favorable after complete resection of benign and non-invasive malignant *** IPMNs that become more aggressive after parenchymal invasion necessitate adequate lymph node *** the other hand,asymptomatic branch duct IPMNs without mural nodules can be observed without the need for resection for a considerable period of *** review addresses available data,current understanding,controversy,and future directions about IPMNs.

关键词： intraductal papillary mucinous neoplasm clinicopathologic treatment prognosis

交联透明质酸钠凝胶对近距离放射治疗中危及器官的隔离防护作用

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中国组织工程研究 2025年第4期29卷 700-706页

作者：刘建建张燕崔志伟王东方刘旭杨盛林柴谦刘凤林华熙生物科技股份有限公司山东省济南市250000 山东省食品药品审评查验中心山东省济南市250000

背景:交联透明质酸钠凝胶具备良好的力学性能、生物相容性与降解性,可作为肿瘤放射治疗中的隔离防护材料,用于保护危及器官免受多余辐照剂量的损伤。目的:探究交联透明质酸钠凝胶在近距离放射治疗中减少危及器官受照剂量等方面的安全性... 详细信息

背景:交联透明质酸钠凝胶具备良好的力学性能、生物相容性与降解性,可作为肿瘤放射治疗中的隔离防护材料,用于保护危及器官免受多余辐照剂量的损伤。目的:探究交联透明质酸钠凝胶在近距离放射治疗中减少危及器官受照剂量等方面的安全性及有效性。方法:取周龄相同、体质量相近的无特定病原体级昆明小鼠作为实验对象,共16只,采用随机数字表法分为实验组与对照组,每组8只。在实验组小鼠背部皮下植入125Ⅰ放射性粒子,随后环绕放射性粒子周边注射交联透明质酸钠凝胶,在对照组小鼠背部皮下仅植入125Ⅰ放射性粒子。注射完成后,采用螺旋CT扫描测量放射性粒子与表皮的距离,采用辐射剂量仪检测体表辐射剂量;注射后10周内,观察小鼠生长状态及存活率、皮肤放射损伤情况及凝胶存留量。结果与结论:①螺旋CT扫描显示植入的凝胶相对集中,并且使放射性粒子与表皮之间产生有效的间隔距离。实验组小鼠体表辐射剂量明显低于对照组(P<0.01)。②在实验观察期内,两组小鼠均存活,对照组小鼠在实验观察后期出现明显烦躁等不稳定表现,部分实验组小鼠出现类似行为;两组小鼠日摄食量无明显变化,体质量呈现相同的增长趋势。植入放射性粒子后两组小鼠均出现不同程度的放射性皮肤损伤,自注射后第23天开始至实验结束,实验组小鼠皮肤放射损伤评分均低于对照组(P<0.01)。植入后第10周,实验组6只小鼠皮下无明显凝胶残留,2只小鼠皮下存在极少量散在的凝胶状样品。③结果表明,注射交联透明质酸钠凝胶可通过物理占位作用增加125Ⅰ放射性粒子放射靶区和靶外危及器官的间隔空间,有效降低危及器官的受照剂量,对危及器官起到隔离防护作用。

关键词：交联透明质酸钠凝胶 125I粒子危及器官隔离防护动物实验近距离放射治疗

Removing phosphorus from aqueous solutions by using iron- modified corn straw biochar

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Frontiers of Environmental Science & Engineering 2015年第6期9卷 1066-1075页

作者： fenglin liu Jiane ZUO Tong CHI Pei WANG Bo YANG State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Beijing 100084 China

Iron-modified corn straw biochar was used as an adsorbent to remove phosphorus from agricultural runoff. When agricultural runoffs with a total phosphorus （TP） concentration of 1.86 mg.L-1 to 2.47 mg.L-1 were filtered at a hydraulic retention time of 2 h through a filtration column packed with the modified biochar, a TP removal efficiency of over 99% and an effluent TP concentration of less than 0.02mg.L-1 were achieved. The isotherms of the phosphorus adsorption by the modified biochar fitted the Freundlich equation better than the Langmuir equation. The mechanism of the phosphorus adsorbed by the modified biochar was analyzed by using various technologies, i.e. scanning electron microscopy （SEM）, X-ray diffraction （XRD） analysis, X-ray photoelectron spectroscopy （XPS）, and Fourier transform infrared spectroscopy （FTIR）. The results indicated that the surface of the modified biochar was covered by small iron granules, which were identified as Fe304. The results also showed that new iron oxides were formed on the surface of the modified biochar after the adsorption of phosphorus. Moreover, new bonds of Fe- O-P and P-C were found, which suggested that the new iron oxides tend to be Fe5（PO4）4（OH）3. Aside from removing phosphorus, adding the modified biochar into soil also improved soil productivity. When the modified biochar-to-soil rate was 5%, the stem, root, and bean of broad bean plants demonstrated increased growth rates of 91%, 64%, and 165%, respectively.

关键词： iron-modified biochar phosphorus removal,agricultural waste agricultural runoff

Cation exchange resin supported nanoscale zero-valent iron for removal of phosphorus in rainwater runoff

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Frontiers of Environmental Science & Engineering 2014年第3期8卷 463-470页

作者： Bangmi XIE Jiane ZUO Lili GAN fenglin liu Kaijun WANG State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Beijing 100084 China

Self-made cation exchange resin supported nanoscale zero-valent iron （R-nZVI） was used to remove phosphorus in rainwater runoff. 80% of phosphorus in rainwater runoff from grassland was removed with an initial concentration of 0.72 mg. L-1 phosphorus when the dosage of R-nZVl is 8 g per liter rainwater, while only 26% of phosphorus was removed when using cation exchange resin without supported nanoscale zero-valent iron under the same condition. The adsorption capacity of R-nZVI increased up to 185 times of that of the cation exchange resin at a saturated equilibrium phosphorous concentration of 0.42 mg. L-1. Various techniques were implemented to characterize the R-nZVI and explore the mechanism of its removal of phosphate. Scanning electron microscopy （SEM） indicated that new crystal had been formed on the surface of R-nZVI. The result from inductive coupled plasma （ICP） indicated that 2.1% of nZVI was loaded on the support material. The specific surface area was increased after the load of nanoscale zero-valent iron （nZVI）, according to the measurement of BET-N2 method. The result of specific surface area analysis also proved that phosphorus was removed mainly through chemical adsorption process. X-ray photoelectron spectroscopy （XPS） analysis showed that the new product obtained from chemical reaction between phosphate and iron was ferrous phosphate.

关键词： nanoscale zero-valent iron(R-nZVI) cation exchange resin rainwater runoff phosphorus adsorption

Ammonia and phosphorus removal from using cash crop waste-derived agricultural runoff biochars

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Frontiers of Environmental Science & Engineering 2020年第3期14卷 141-153页

作者： Alisa Salimova Jian'e Zuo fenglin liu Yajiao Wang Sike Wang Konstantin Verichev State Key Joint Laboratory of Environmental Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China Beijing JingYi Air Protection&Technology Company Wanda Plaza93 Jianguo RoadChaoyang DistrictBeijing 100022China Institute of Civil Engineering Faculty of Engineering SciencesUniversidad Austral de ChileValdivia 5090000Chile

Adsorption of biochars(BC)produced from cash crop residuals is an economical and practical technology for removing nutrients from agricultural *** this study,B C made of orange tree trunks and tea tree twigs from the Laoguanhe Basin were produced and modified by aluminum chloride(Al-modified)and ferric sulfate solutions(Fe-modified)under various pyrolysis temperatures(200℃-600℃)and residence times(2-5 h).All produced and modified B C were further analyzed for their abilities to adsorb ammonia and phosphorus with initial concentrations of 10-40 mg/L and 4-12 mg/L,***-modified Tea Tree B C 2h/400℃showed the highest phosphorus adsorption capacity of 0.56 mg/***-modified Orange Tree B C 3h/500℃showed the best performance for ammonia removal with an adsorption capacity of 1.72 mg/*** characterization showed that P=O bonds were formed after the adsoiption of phosphorus by modified BC,N-H bonds were formed after ammonia adsorption.X P S analysis revealed that the key process of ammonia adsorption was the ion exchange between K+and N H *** adsorption was related to oxidation and interaction between PO43-and Fe3+.According to X R D results,ammonia was found in the form of potassium amide,while phosphorus was found in the form of iron hydrogen *** sorption isotherms showed that the Freundlich equation fits better for phosphorus adsorption,while the Langmuir equation fits better for ammonia *** simulated runoff infiltration experiment showed that 97.3%of ammonia was removed by Al-modified Orange tree B C 3h/500℃,and 92.9%of phosphorus was removed by Fe-modified Tea tree B C 2h/400℃.

关键词： Biochar Adsorption Ammonia removal Phosphorus removal Agricultural runoff

Methanogenic community dynamics in anaerobic co-digestion of fruit and vegetable waste and food waste

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Journal of Environmental Sciences 2012年第7期24卷 1288-1294页

作者： Jia Lin Jiane Zuo Ruofan Ji Xiaojie Chen fenglin liu Kaijun Wang Yunfeng Yang State Key Joint Laboratory of Environment Simulation and Pollution Control(SKLESPC) School of EnvironmentTsinghua UniversityBeijing 100084China

A lab-scale continuously-stirred tank reactor （CSTR）, used for anaerobic co-digestion of fruit and vegetable waste （FVW） and food waste （FW） at different mixture ratios, was operated for 178 days at the organic loading rate of 3 kg VS （volatile solids）/（***）. The dynamics of the Archaeal community and the correlations between environmental variables and methanogenic community structure were analyzed by polymerase chain reactions - denaturing gradient gel electrophoresis （PCR-DGGE） and redundancy analysis （RDA）, respectively. PCR-DGGE results demonstrated that the mixture ratio of FVW to FW altered the community composition of Archaea. As the FVW]FW ratio increased, Methanoculleus, Methanosaeta and Methanosarcina became the predominant methanogens in the community. Redundancy analysis results indicated that the shift of the methanogenic community was significantly correlated with the composition of acidogenic products and methane production yield. Different mixture ratios of substrates led to different compositions of intermediate metabolites, which may affect the methanogenic community. These results suggested that the analysis of microbial communities could be used to diagnose anaerobic processes.

关键词： high-solid organic waste anaerobic co-digestion methanogenic community structure denaturing gradient gel elec-trophoresis (DGGE) redundancy analysis (RDA)

Effects of mixture ratio on anaerobic co-digestion with fruit and vegetable waste and food waste of China

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Journal of Environmental Sciences 2011年第8期23卷 1403-1408页

作者： Jia Lin Jiane Zuo Lili Gan Peng Li fenglin liu Kaijun Wang Lei Chen Hainan Gan State Key Joint Laboratory of Environment Simulation and Pollution Control (SKLESPC) School of EnvironmentTsinghua'University Beijing 100084 China. Joint R & D Ceter of Tsinghua Univesity (Department of Environmental Science and Engineering) andShandong Sifon Environmental Protection & Bio-Energy Co. Ltd. Beijing 100084 China

The biochemical methane potentials for typical fruit and vegetable waste （FVW） and food waste （FW） from a northern China city were investigated, which were 0.30, 0.56 m3 CH4/kgVS （volatile solids） with biodegradabilities of 59.3% and 83.6%, respectively. Individual anaerobic digestion testes of FVW and FW were conducted at the organic loading rate （OLR） of 3 kg VS/（m3-day） using a lab-scale continuous stirred-tank reactor at 35°C. FVW could be digested stably with the biogas production rate of 2.17 ma/（m3-day） and methane production yield of 0.42 m3 CH4/kg VS. However, anaerobic digestion process for FW was failed due to acids accumulation. The effects of FVW： FW ratio on co-digestion stability and performance were further investigated at the same OLR. At FVW and FW mixing ratios of 2：1 and 1：1, the performance and operation of the digester were maintained stable, with no accumulation of volatile fatty acids （VFA） and ammonia. Changing the feed to a higher FW content in a ratio of FVW to FW 1：2, resulted in an increase in VFAs concentration to 1100-1200 rag/L, and the methanogenesis was slightly inhibited. At the optimum mixture ratio 1：1 for co-digestion of FVW with FW, the methane production yield was 0.49 m3 CH4/kg VS, and the volatile solids and soluble chemical oxygen demand （sCOD） removal efficiencies were 74.9% and 96.1%, respectively.

关键词： anaerobic co-digestion biochemical methane potential continuous stirred-tank reactor (CSTR) fruit and vegetable waste food waste