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Effects of zero-valent iron added in the flooding or drainage process on cadmium immobilization in an acid paddy soil

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Journal of Environmental Sciences 2024年第4期138卷 19-31页

作者： Hanbing Meng Shiwen Hu zebin Hong Wenting Chi Guojun Chen Kuan Cheng Qiwang Tongxu Liu Fangbai Li Kexue Liu Yang Yang Guangzhou Institute of Geochemistry Chinese Academy of SciencesGuangzhou 510640China National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and ManagementInstitute of Eco-environmental and Soil SciencesGuangdong Academy of SciencesGuangzhou 510650China School of Resources and Planning Guangzhou Xinhua UniversityGuangzhou 510310China University of Chinese Academy of Sciences Beijing 100049China

Zero-valent iron(ZVI)is a promising material for the remediation of Cd-contaminated paddy soils.However,the effects of ZVI added during flooding or drainage processes on cadmium(Cd)retention remain unclear.Herein,Cd-contaminated paddy soil was incubated for 40days of flooding and then for 15 days of drainage,and the underlying mechanisms of Cd immobilization coupled with Fe/S/N redox processes were investigated.The addition of ZVI to the flooding process was more conducive to Cd immobilization.Less potential available Cd was detected by adding ZVI before flooding,which may be due to the increase in paddy soil pH and newly formed secondary Fe minerals.Moreover,the reductive dissolution of Fe minerals promoted the release of soil colloids,thereby increasing significantly the surface sites and causing Cd immobilization.Additionally,the addition of ZVI before flooding played a vital role in Cd retention after soil drainage.In contrast,the addition of ZVI in the drainage phase was not conducive to Cd retention,which might be due to the rapid decrease in soil pH that inhibited Cd adsorption and further immobilization on soil surfaces.The findings of this study demonstrated that Cd availability in paddy soil was largely reduced by adding ZVI during the flooding period and provide a novel insight into the mechanisms of ZVI remediation in Cd-contaminated paddy soils.

关键词： Paddy soil Zero-valent iron Cadmium Flooding and drainage Remediation

Research Progress on Effects of Continuous Cropping on Soil Microbial Florae and Its Restoration

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Agricultural Biotechnology 2024年第2期13卷 75-80页

作者： Zaixiang ZHU zebin CHEN Shengguang XU Zhiwei FAN Li LIN Tianfang wang Qingmei LI Yue YAN Agriculture and Life Sciences College Kunming UniversityKunming 650214China Office of Academic Affairs Kunming UniversityKunming 650201China Yunnan Institute of Biological Carbon Engineering Research Center Kunming 650214China

Continuous cropping has become a common form of agricultural production at present, but with the increase of continuous cropping years, continuous cropping obstacles such as soil-borne diseases and plant growth potential decline are becoming more and more common. At present, the causes of continuous cropping obstacles and continuous cropping restoration have become a hot issue in agricultural research. This paper summarized the effects of continuous cropping obstacles on soil microbial community structure and main technical methods to repair continuous cropping obstacles, such as agricultural measure management, microbial balance adjustment and soil improvement, aiming to provide theoretical reference for protecting the sustainable utilization of soil ecosystem and ensuring the stability of crop production.

关键词： Continuous cropping obstacle Rhizosphere soil Microorganism Soil remediation Soil improvement

Thymoma with hypercalcemia and membranous nephropathy

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Rheumatology & Autoimmunity 2023年第3期3卷 185-187页

作者： Mengmeng Li zebin wang Yuxin Xie Jianbo Liang Yueqiang Wen Department of Nephrology The Second Affiliated HospitalGuangzhou Medical UniversityGuangzhouGuangdongChina

To the Editor,Thymoma is a rare mediastinal tumor originating from thymic epithelial cells.1 The incidence of a paraneoplastic syndrome(PNS)with thymoma is approximately seven times higher than that with thymic carcinoma,with type B2 thymoma being the most common histological pattern.2 Hypercalcemia is the most common PNS in patients with malignant tumors,3 accounting for 30% of all cases.

关键词： histological membranous neoplastic

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路德维希二世名号和东法兰克政治变迁

古代文明（中英文） 2024年第2期18卷 37-48,M0004页

作者：许泽镔王晋新东北师范大学历史文化学院吉林长春130024

东法兰克国王路德维希二世拥有多种不同名号,体现出使用者对相应名号背后政权形态的不同想象。根据对路德维希自己所接受的“巴伐利亚国王”“东法兰克国王”等头衔的研究,可以看到名号与东法兰克政治变迁和国家升格的对应关系。通过与... 详细信息

东法兰克国王路德维希二世拥有多种不同名号,体现出使用者对相应名号背后政权形态的不同想象。根据对路德维希自己所接受的“巴伐利亚国王”“东法兰克国王”等头衔的研究,可以看到名号与东法兰克政治变迁和国家升格的对应关系。通过与路德维希二世名号几种他人表达形式的对比,可以进一步认识到中古早期法兰克政权存在与古典日耳曼和近代德意志不同的政治形态,因而路德维希二世政权及其民族特性的认定也宜重新评估。

关键词：路德维希二世名号德意志中古政治

具身·意象·图式--解码宋元山水画中村居空间的叙事性

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家具与室内装饰 2024年第1期31卷 114-119页

作者：王迪严湘琦黄泽斌中南大学中国村落文化研究中心湖南长沙410083 长江大学城市建设学院湖北荆州434023 湖南大学建筑与规划学院湖南长沙410082 湖南省交通勘察设计研究院工程美学研究中心湖南长沙410008

文章旨在挖掘宋元山水画中村居意象图式背后蕴含的主体认知与观念逻辑。通过运用图像志的研究方法,以具身感知的理论视角,对这一时期典型画作中的村居意象进行图解分析。研究表明宋元山水画中的村居空间是一种主客相融的复合空间,其意... 详细信息

文章旨在挖掘宋元山水画中村居意象图式背后蕴含的主体认知与观念逻辑。通过运用图像志的研究方法,以具身感知的理论视角,对这一时期典型画作中的村居意象进行图解分析。研究表明宋元山水画中的村居空间是一种主客相融的复合空间,其意象的生成往往会经历主体“意”与客体“象”的具身互动过程,并表征为四种叙事情节:“江山胜景·全域”“深山舍寺·片景”“曲径幽园·一隅”“水岸空亭·旷点”,进而凝结成不同主体关照下的图式意蕴。解码宋元山水画中村居空间的叙事性,能为当下中国式村居空间营造的观念重塑提供有益的参考与启示。

关键词：宋元山水画村居空间具身感知空间叙事图式意蕴

舌下免疫治疗对3~6岁学龄前儿童变应性鼻炎Treg/Th17细胞平衡及相关细胞因子的影响

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中国耳鼻咽喉头颈外科 2024年第1期31卷 36-40页

作者：江泽斌马泽明王丹洁普宁市人民医院耳鼻咽喉科广东普宁515300

目的评估舌下免疫治疗(sublingual immunotherapy,SLIT)对3~6岁学龄前儿童变应性鼻炎(AR)调节性T细胞(Treg)/辅助性T细胞(Th17)细胞平衡及相关细胞因子的影响。方法将70例3~6岁学龄前AR患儿分为SLIT组和药物组,对其临床资料进行回顾性... 详细信息

目的评估舌下免疫治疗(sublingual immunotherapy,SLIT)对3~6岁学龄前儿童变应性鼻炎(AR)调节性T细胞(Treg)/辅助性T细胞(Th17)细胞平衡及相关细胞因子的影响。方法将70例3~6岁学龄前AR患儿分为SLIT组和药物组,对其临床资料进行回顾性分析。药物组采用单纯的对症治疗,SLIT组采用SLIT联合对症药物的治疗方案,观察随访3年。分析比较2组患儿治疗前、后Treg/Th17细胞平衡和血清转化生长因子-β(TGF-β)、白细胞介素10(IL-10)、IL-17、IL-21水平变化,以及鼻炎症状总评分(total nasal symptoms score,TNSS)、药物总评分(total medication score,TMS)、视觉模拟量表(VAS)评分。结果治疗3年后,两组的CD4^(+)CD25^(+)Foxp3^(+)Treg和CD4^(+)IL-17^(+)Th17细胞占CD4^(+)T细胞的百分率,Treg细胞和Th17细胞百分率,血清TGF-β、IL-10、IL-17、IL-21水平,鼻炎症状总评分、药物总评分和视觉模拟量表评分均显著改善(P<0.05),且SLIT组明显低于药物组(P<0.05)。结论SLIT能够调节Treg/Th17细胞平衡,改善血清TGF-β、IL-10、IL-17、IL-21水平。

关键词：免疫疗法投药,舌下儿童鼻炎,过敏 T淋巴细胞,调节性 Th17细胞细胞因子类舌下免疫治疗

Chemical Characteristics and Environmental Records of a Snow-Pit at the Glacier No.12 in the Laohugou Valley, Qilian Mountains

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Journal of Earth Science 2014年第2期25卷 379-385页

作者： Xiaoqing Cui Jiawen Ren Xiang Qin Weijun Sun Guangming Yu zebin wang Weigang Liu State Key Laboratory of Cryospheric Science Cold and Arid Region Environment and Engineering Research InstituteChinese Academy of Sciences Qilian Shan Station of Glaciology and Ecologic Environment Key Laboratory of Arid Climatic Change and Reducing Disaster of Gansu Province Institute of Arid MeteorologyChina Meteorological Administration

In June 2006, samples were collected from a 90 cm snow-pit at an elevation of 5 040 m a.s.l, in the northern branch firn basin of the Glacier No. 12, Laohugou Valley, in the western part of Qilian Mountain, China. Oxygen isotopes （6180） and major soluble ions were measured. Results showed that Ca2＋ is the dominant cation, and SO42 is the dominant anion. All major ions have close positive correlations with eachother except NO3 and NH4＋. 6180 show positive correlation with air temperature. The method of correlation analysis, sea-salt ion tracer and trend analysis were used to determine the source of the chemical components. The correlation analysis and HYSPLIT backward trajectory analysis suggest that atmospheric soluble dust species dominate the chemical signature.

关键词： snow-pit glaciochemistry Glacier No. 12 at Laohugou ion Qilian Mountain.

喷砂对MCrAlY-单晶高温合金界面组织影响研究

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表面技术 2024年第1期53卷 202-208页

作者：郭云珊王晶李琰琰鲍泽斌原慷刘建明中国航发商用航空发动机有限责任公司上海201108 中国科学院金属研究所沈阳110016 矿冶科技集团有限公司北京100044

目的研究在单晶表面喷砂预处理对MCrAlY-单晶高温合金界面的组织的影响。方法对单晶基材进行不同载荷条件下的喷砂处理(包括无喷砂、轻喷砂及重喷砂),然后采用超音速火焰喷涂(HVOF)工艺在单晶试样上制备MCrAlY涂层,观察高温氧化后涂层... 详细信息

目的研究在单晶表面喷砂预处理对MCrAlY-单晶高温合金界面的组织的影响。方法对单晶基材进行不同载荷条件下的喷砂处理(包括无喷砂、轻喷砂及重喷砂),然后采用超音速火焰喷涂(HVOF)工艺在单晶试样上制备MCrAlY涂层,观察高温氧化后涂层-单晶界面组织的演变。真空热处理后,首先对基材和涂层的微观组织结构进行扫描电镜观察表征,然后对涂层进行1 050℃的高温氧化试验,保温287 h后,继续采用背散射电子模式观察TCP相的析出行为,测量并绘制互扩散区和二次反应区析出厚度柱状图。结果高温氧化热暴露过程中,涂层和基体之间发生了明显的元素互扩散现象,喷砂处理对互扩散区大小,尤其是二次反应区的深度,有着显著影响。在该高温氧化试验条件下,轻喷砂和重喷砂对互扩散区厚度的影响不大(重喷砂17.5μm,轻喷砂20μm),但显著促进了SRZ的析出厚度(重喷砂52.5μm,轻喷砂40μm)。结论喷砂会导致单晶内产生塑性变形(形成GPDZ),且重喷砂会析出更深的二次反应区,对于包覆型MCrAlY涂层在单晶热端部件的表面应用,应当对单晶表面实施轻喷砂或无喷砂处理。

关键词：喷砂单晶高温合金组织演变超音速火焰喷涂

纳米微球在治疗脊柱退行性疾病应用中的研究进展

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中国脊柱脊髓杂志 2024年第5期34卷 536-539页

作者：王泽斌张钟巍吴蔚王森辉常峰山西医科大学附属山西省人民医院骨科太原市030012 湖北省宜昌市中心人民医院核医学科 443000

目前脊柱退行性疾病的发生率逐年升高,典型的临床表现主要是神经根或脊髓受累所导致的疼痛和神经功能障碍[1]。其发生机理多是椎间盘退变导致微环境发生变化,产生炎症反应,释放大量炎性因子,引起疼痛[2];骨赘、终板硬化和椎间盘突出压... 详细信息

目前脊柱退行性疾病的发生率逐年升高,典型的临床表现主要是神经根或脊髓受累所导致的疼痛和神经功能障碍[1]。其发生机理多是椎间盘退变导致微环境发生变化,产生炎症反应,释放大量炎性因子,引起疼痛[2];骨赘、终板硬化和椎间盘突出压迫后方脊髓或神经根导致神经或脊髓受损[3]。目前主流的手术治疗方法是通过脊柱内镜下椎间盘切除术或腰椎融合术等手术方式解除神经和脊髓受到的压迫,避免对神经造成进一步损伤,但这些手术方式不能修复神经根减压后纤维环(annulus fibrosus,AF)缺损和神经的损伤[4、5]。

关键词：椎间盘切除术神经功能障碍炎性因子腰椎融合术神经根脊髓受损椎间盘突出骨赘