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浅析施工现场基桩处理办法

城市建筑 2014年第24期11卷 80-80页

作者：任宏亮山西省第三建筑工程公司

在建筑中，基桩的应用是非常广泛的。它的作用是把浅层土层无法承受的上部负荷传递至深层具有较大承载力的岩土层上，在工程中也会出现一些基桩方面的问题。本文分析了这些问题的产生的原因，并提出了相应的处理措施。

关键词：桩基础承载力处理方法

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基于工程车辆应急制动系统的应用研究

时代汽车 2022年第18期 30-32页

作者：田兴春牟均发任宏亮何银涛王坚刚西安主函数智能科技有限公司陕西省西安市710076

露天矿区封闭场景下的无人驾驶工程车行车过程中,当主制动EBS系统出现致命故障时,EBS系统执行失效即不受减速度指令控制,车辆安全无法得到保障;本文提出了一种应急制动系统并在工程车辆上得到了实施及应用,应急制动系统启动后,可替代行... 详细信息

露天矿区封闭场景下的无人驾驶工程车行车过程中,当主制动EBS系统出现致命故障时,EBS系统执行失效即不受减速度指令控制,车辆安全无法得到保障;本文提出了一种应急制动系统并在工程车辆上得到了实施及应用,应急制动系统启动后,可替代行车制动(EBS)执行无人驾驶系统制动命令实现行车过程紧急制动动作;实际运行结果表明,应急制动具备紧急时刻无人驾驶运行安全保障功能。

关键词：露天矿区工程车应急制动无人驾驶致命故障

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藜蒿总黄酮对顺铂化疗增敏效应的研究

九江学院学报（自然科学版） 2012年第4期27卷 71-73页

作者：何观平邱国胜李玲苇杨世伟任红梁曹俊九江学院临床医学院九江学院基础医学院江西九江332000

目的明确藜蒿总黄酮是否对顺铂有化疗增敏效应。方法采用MTT法检测藜蒿总黄酮与顺铂单用及联合应用时对细胞的生长抑制作用,利用金氏公式计算Q值,判断两者在各种浓度联合用药时是否有协同作用。结果 600μg/mL藜蒿黄酮与2μg/mL或1μg/m... 详细信息

目的明确藜蒿总黄酮是否对顺铂有化疗增敏效应。方法采用MTT法检测藜蒿总黄酮与顺铂单用及联合应用时对细胞的生长抑制作用,利用金氏公式计算Q值,判断两者在各种浓度联合用药时是否有协同作用。结果 600μg/mL藜蒿黄酮与2μg/mL或1μg/mL顺铂联合用药时有协同作用。结论藜蒿总黄酮对顺铂具有化疗增敏效应。

关键词：藜蒿,黄酮,顺铂,化疗增敏作用

An acid-triggered porphyrin-based block copolymer for enhanced photodynamic antibacterial efficacy

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Science China Chemistry 2021年第3期64卷 459-466页

作者： Fan Yu Chao Chen Guoliang Yang Zhengtong ren hongliang Cao Liangshun Zhang Weian Zhang Shanghai Key Laboratory of Functional Materials Chemistry East China University of Science and TechnologyShanghai 200237China

Bacterial infection, especially multidrug-resistant(MDR) bacterial infection has threatened public health drastically. Here, we fabricate an "acid-triggered" nanoplatform for enhanced photodynamic antibacterial activity by reducing the aggregation of photosensitizers(PSs) in bacterial acidic microenvironment. Specifically, a functional amphiphilic block copolymer was first synthesized by using a pH-sensitive monomer, 2-(diisopropylamino) ethyl methacrylate(DPA) and porphyrin-based methacrylate(TPPC6MA) with poly(oligo(ethylene glycol) methyl ether methacrylate)(POEGMA) as the macromolecular chain transfer agent, and POEGMA-b-[PDPA-co-PTPPC6MA] block copolymer was further self-assembled into spherical nanoparticles(PDPA-TPP). PDPA-TPP nanoparticles possess an effective electrostatic adherence to negatively charged bacterial cell membrane, since they could rapidly achieve positive charge in acidic bacterial media. Meanwhile, the acid-triggered dissociation of PDPA-TPP nanoparticles could reduce the aggregation caused quenching(ACQ) of the photosensitizers, leading to around 5 folds increase of the singlet oxygen(1O2) quantum yield. In vitro results demonstrated that the "acid-triggered" PDPA-TPP nanoparticles could kill most of MDR S. aureus(Gram-positive) and MDR E. coli(Gram-negative) by enhanced photodynamic therapy, and they could resist wound infection and accelerate wound healing effectively in vivo. Furthermore, PDPA-TPP nanoparticles could well disperse the biofilm and almost kill all the biofilm-containing bacteria. Thus, by making use of the bacterial acidic microenvironment, this "acid-triggered" nanoplatform in situ will open a new path to solve the aggregation of photosensitizers for combating broad-spectrum drug-resistant bacterial infection.

关键词： photodynamic therapy antibacterial porphyrin aggregation caused quenching(ACQ)

Characterization, treatment and releases of PBDEs and PAHs in a typical municipal sewage treatment plant situated beside an urban river, East China

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Journal of Environmental Sciences 2013年第7期25卷 1281-1290页

作者： Xiaowei Wang Beidou Xi Shouliang Huo Wenjun Sun Hongwei Pan Jingtian Zhang Yuqing ren hongliang Liu State Key Laboratory of Water Environment Simulation School of EnvironmentBeijing Normal University State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences Department of Chemical and Biochemical engineering Western University State Key Laboratory of Water Environment Simulation School of Environment Beijing Normal University

Characterization, treatment and releases of eight polybrominated diphenyl ethers （PBDEs） congeners and sixteen polycyclic aromatic hydrocarbons （PAHs） in wastewater were evaluated along the treatment processes of a typical secondary treatment municipal sewage treatment plant （STP）（in Hefei City） situated the beside Nanfei River, East China. The findings showed that the average concentrations of the total PBDEs in raw wastewater and treated effluent were 188.578 and 36.884 ng/L respectively. Brominated diphenyl ether （BDE） 209 congener, the predominant PBDE in the STP and Nanfei River, could be related to the discharge of car-industry-derived wastes. For PAHs, the average concentrations in raw wastewater and treated effluent were 5758.8 and 2240.4 ng/L respectively, with naphthalene, benzo[a]pyrene and indeno[1,2,3-c,d]pyrene being detected at the highest concentrations. PAHs mainly originate from the combustion of biomass/coal and petroleum. The STP reduced about 80% of the PBDEs and 61% of the PAHs, which were eliminated mainly by sedimentation processes. The removal rates of PBDEs/PAHs increased with the increase of their solid-water partitioning coefficients. Accordingly, the STP＇s effluent, containing some PBDE congeners （e.g., BDE 47, 99 and 209, etc.） and low-molecular-weight PAHs, could be an important contributor of these contaminants＇ input to Nanfei River. It resulted in a significant increase of PBDE/PAH concentrations and PAH toxicological risk in the river water downstream. About 4.040 kg/yr of PBDEs and 245.324 kg/yr of PAHs could be released into the Nanfei River. The current conventional wastewater treatment processes should be improved to remove the relatively low-molecular-weight PBDEs/PAHs more effectively.

关键词： polybrominated diphenyl ethers polycyclic aromatic hydrocarbons municipal sewage treatment plant urban river

Endosulfan in the Chinese environment： monitoring and modeling

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Frontiers of Environmental Science & Engineering 2012年第1期6卷 32-44页

作者： hongliang JIA Liyan LIU Yeqing SUN Daoji CAI Jianxin HU Nanqi ren Yifan LI International Joint Research Center for Persistent Toxic Substances(IJRC-PTS) Dalian Maritime UniversityDalian 116026China IJRC-PTS State Key Laboratory for Urban Resources and EnvironmentHarbin Institute of TechnologyHarbin 150090China Environmental System Biology Institute Dalian Maritime UniversityDalian 116026China Nanjing Instituteof Environmental Science Nanjing 210042China College of Environmental Science Peking UniversityBeijing 100871China IJRC-PTS Ryerson UniversityToronto M5B 2K3Canada

This paper reviews the usage and emissions of endosulfan, the newest member of the persistent organic pollutants （POPs）, in China, and its fate and behavior in Chinese environment. Endosulfan usage in China has been estimated to be approximately 25700 t between 1994 and 2004. Concentrations of endosulfan in different environ- mental compartments in China, such as air, soil, water, and biota, but focusing at air and surface soil, have been summarized. Concentrations of total endosulfan in surface soil across China were ranged from below detection limit （BDL） to 19000 pg.g^-1 dry weight （dw）, with geometric mean of 120pg.g^-1dw. The results indicated that endo- sulfan sulfate had highest concentration in Chinese soil, followed by r- and α-endosulfan. Air concentrations of endosulfan in China were ranged 0-340 pg.m3 for a- endosulfan and 0-121 pg. m--3 for β-endosulfan, with high concentrations occurred in the cotton production areas. Gridded usage inventories of endosulfan on a fine gridded system with a 1/4° longitude by 1/6° latitude resolution were compiled, from which, emission to air and residues in soil of endosulfan were calculated in each grid by using a modified simplified gridded pesticide emission and residue model （SGPERM）, an integrated modeling system combining mathematical model, database management system, and geographic information system. Total emissions were around 10800 t from 1994 to 2004. Based on the emission and residue inventories, concentrations of α- and β- endosulfan in Chinese air and agricultural surface soil were also calculated for each grid cell, which are in general consistent with the published monitoring data.

关键词： endosulfan monitoring modeling inventories persistent organic pollutants persistent organicpollutants (POPs)

能谱CT成像对原发性纵隔神经内分泌癌和胸腺癌的鉴别诊断研究

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中国煤炭工业医学杂志 2021年第5期24卷 535-540页

作者：曹立秀李会菊马拓陈大鹏任红亮李志东高媛河北省唐山市人民医院CT室 063000

目的分析鉴别原发性纵隔神经内分泌癌(mediastinal neuroendocrine carcinoma,MNC)和胸腺癌能谱CT成像的定量参数特征性改变。方法回顾性分析经唐山市人民医院穿刺活检病理证实的13例原发性MNC和27例胸腺癌患者,所有患者均行双期能谱CT... 详细信息

目的分析鉴别原发性纵隔神经内分泌癌(mediastinal neuroendocrine carcinoma,MNC)和胸腺癌能谱CT成像的定量参数特征性改变。方法回顾性分析经唐山市人民医院穿刺活检病理证实的13例原发性MNC和27例胸腺癌患者,所有患者均行双期能谱CT增强扫描,测量并计算病变于动脉期、静脉期的单能量CT值、碘基物质值、ROC曲线,对二组患者行定量、定性综合全面分析。结果原发性MNC于动脉期40~70 keV的单能量CT值和碘基值均高于胸腺癌,差异有统计学意义(P0.05)。结论能谱CT成像对原发性MNC与胸腺癌鉴别诊断有一定的价值,而单纯形态学和增强扫描鉴别诊断意义不大。

关键词：胸腺癌原发性纵隔神经内分泌癌 CT能谱成像

能谱CT鉴别结节病与霍奇金淋巴瘤纵隔肿大淋巴结的初步研究

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中国煤炭工业医学杂志 2022年第2期25卷 141-146页

作者：曹立秀李会菊马拓陈大鹏任红亮高媛李志东河北省唐山市人民医院CT室 063000

目的探讨能谱CT对结节病和霍奇金淋巴瘤的纵隔肿大淋巴结鉴别诊断价值。方法回顾性分析于2018年1月—2021年3月在唐山市人民医院经穿刺活检病理证实的21例结节病和39例霍奇金淋巴瘤患者,所有患者均行胸部双期能谱CT增强扫描,测量并计算... 详细信息

目的探讨能谱CT对结节病和霍奇金淋巴瘤的纵隔肿大淋巴结鉴别诊断价值。方法回顾性分析于2018年1月—2021年3月在唐山市人民医院经穿刺活检病理证实的21例结节病和39例霍奇金淋巴瘤患者,所有患者均行胸部双期能谱CT增强扫描,测量并计算、分析动脉期和静脉期中纵隔肿大淋巴结的单能量CT值、标准化碘浓度值(NICs)、能谱曲线斜率(λHU)和受试者工作特征曲线(ROC)和差异;同时比较二组患者纵隔肿大淋巴结的解剖分布和形态学特征。结果结节病组动脉期的40~100 keV单能量CT值和静脉期的40~50 kev单能量CT值均高于霍奇金淋巴瘤组,差异有统计学意义(P<0.05);结节病组动脉期的NICs和动脉期、静脉期的λHU均高于霍奇金淋巴瘤组,差异有统计学意义(P<0.05)。ROC曲线分析显示动脉期40keV单能量CT值鉴别诊断结节病与霍奇金淋巴瘤的敏感性(71.4%)和特异性(100%)最高。二组病变纵隔肿大淋巴结的解剖分布、融合、钙化、压迫、强化方式及强化程度均有统计学意义(P<0.05)。结论能谱CT成像对霍奇金淋巴瘤和结节病的诊断鉴别具有重要的价值。

关键词：结节病霍奇金淋巴瘤 CT能谱成像定量分析

Micron-scale 1:5H-based precipitated phase with the lamellar structure of sintered Sm_(2)Co_(17)-based magnets and its potential application

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Journal of Materials Science & Technology 2023年第22期153卷 159-165页

作者： Nengjun Yu Yingchang Li Zesong ren Minxiang Pan Hangfu Yang Qiong Wu hongliang Ge Minggang Zhu Wei Li College of Materials and Chemistry China Jiliang UniversityHangzhou 310018China Division of Functional Materials Research Central Iron and Steel Research InstituteBeijing 100081China

The excellent thermal stability of magnetic properties of Sm_(2)Co_(17)-based magnets is their most impor-tant ***,this stability is reduced when the maximum energy product of Sm_(2)Co_(17)-based magnets is improved,which is mainly determined by the Fe/Cu distribution of the 2:17R cell and 1:5H cell boundary *** the demagnetization process,the Cu-rich 1:5H cell boundary phase with a width of 2-15 nm obstructs the motion of the domain walls,yielding ***,we report a micron-scale Cu/Zr-rich and Fe-lean 1:5H-based precipitated phase with a lamellar structure,probably induced by Sm_(2)O_(3) *** structure enables the separate regulation of Fe and Cu distribution for Sm_(2)Co_(17)-based magnets with Fe-rich 2:17R cell phases and Cu-rich 1:5H cell boundary phases,consid-erably optimizing the thermal stability of magnetic *** discovery can be further developed to produce Sm_(2)Co_(17)-based magnets with high performance and excellent thermal stability of magnetic properties.

关键词： Sm_(2)Co_(17)-type magnets Thermal stability of magnetic properties 1:5H-based precipitated phase Element distribution