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Effects of organic acids on Cd adsorption and desorption by two anthropic soils

Frontiers of Environmental Science & Engineering 2013年第1期7卷 19-30页

作者： Jingui WANG jialong lv Yaolong FU College of Resources and Environment Northwest A&F University Yangling 712100 China Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China Ministry of Agriculture Yangling 712100 China

The objective of this experiment was to study the effects of malic, tartaric, oxalic, and citric acid on the adsorption and desorption characteristics of Cd by two typical anthropic soils (lou soil and irrigation-silted soil) in North-west China. Cadmium adsorption and desorption were studied under a range of temperatures (25°C, 30°C, 35°C, 40°C), organic acid concentrations (0.5–5.0 mmol·L?1), and pH values (2–8). The results showed that the Cd adsorption capacity of the lou soil was significantly greater than that of the irrigation-silted soil. Generally, Cd adsorption increased as the temperature increased. In the presence of NaNO3, the adsorption of Cd was endothermic with ΔH values of 31.365 kJ·mol?1 for lou soil and 28.278 kJ·mol?1 for irrigation-silted soil. The endothermic reaction indicated that H bonds were the main driving force for Cd adsorption in both soils. However, different concentrations of organic acids showed various influences on the two soils. In the presence of citric acid, chemical adsorption and van der Waals interactions were the main driving forces for Cd adsorption rather than H bonds. Although the types of organic acids and soil properties were different, the effects of the organic acids on the adsorption and desorption of Cd were similar in the two soils. The adsorption percentage of Cd generally decreased as organic acid concentrations increased. In contrast, the adsorption percentage increased as the pH of the initial solution increased. The exception was that adsorption percentage of Cd increased slightly as oxalic acid concentrations increased. In contrast, the desorption percentage of Cd increased with increasing concentrations of organic acids but decreased as the initial solution pH increased.

关键词： adsorption desorption cadmium organic acids temperature anthropic soil

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Impacts of cadmium addition on the alteration of microbial community and transport of antibiotic resistance genes in oxytetracycline contaminated soil

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Journal of Environmental Sciences 2021年第1期33卷 51-58页

作者： Honghong Guo Shuhong Xue Mubasher Nasir Jie Gu jialong lv College of Natural Resources and Environment Northwest A&F UniversityYangling 712100China Power China Northwest Engineering Corporation Limited Power Construction Corporation of ChinaXian 710065China

The large-scale development in livestock feed industry has increased the chances of antibiotics and heavy metals contamination in the *** fate of antibiotic resistance genes(ARGs)and microbial community in heavy metals and antibiotic contaminated soil is still *** this study,we investigated the effect of cadmium(Cd)addition on the transport of ARGs,microbial community and human pathogenic bacteria in oxytetracycline(OTC)contaminated *** showed that the addition of OTC significantly increased the abundance of ARGs and intI1 in the soil and lettuce *** addition of Cd to OTC treated soil further increased the abundance and translocation of ARGs and ***,Cd promoted the transfer of potential human pathogenic bacteria(HPB)into lettuce *** with O10 treatment,the addition of Cd decreased the concentration of OTC in soil and lettuce tissue,but slightly increased the fresh weight of lettuce *** analysis indicated that bacterial community succession is a major factor in ARGs *** analysis indicated that the main host bacteria of ARGs were mainly derived from *** analysis showed that intI1 was significantly correlated with tetG,tetC,sul1,sul2,erm X,and ***,potential HPB(Clostridium,and Burkholderia)was significantly correlated with intI1 and eight ARGs(tetG,tetC,tetW,tetX,sul1,sul2,ermX,and ermQ.).The findings of this study suggest that the addition of heavy metals to agricultural fields must be considered in order to reduce the transfer of ARGs in the soil and crops.

关键词： Antibiotic resistance gene Cadmium Human pathogenic bacteria Oxytetracycline

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Greenhouse area detection in Guanzhong Plain,Shaanxi,China:spatio-temporal change and suitability classification

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International Journal of Digital Earth 2022年第1期15卷 226-248页

作者： Caihong Gao Qifan Wu Miles Dyck jialong lv Hailong He College of Natural Resources and Environment Northwest A&F UniversityYanglingPeople’s Republic of China Key Laboratory of Plant Nutrition and the Agri-Environment in Northwest China (Ministry of Agriculture) Northwest A&F UniversityYanglingPeople’s Republic of China College of Surveying and Geo-informatics North China University of Water Resources and Electric PowerZhengzhouPeople’s Republic of China Department of Renewable Resources University of AlbertaEdmontonCanada

The extensive use of greenhouses has brought soared economic benefits for farming practitioners in China and an overview of the spatio-temporal distribution of greenhouses is of great interest to agricultural practitioners and *** this study,Landsat image based greenhouse maps in Guanzhong Plain,Shaanxi,China were made using random forest classification algorithm through visual interpretation on the Google Earth *** 7-year's changes in greenhouse areas were investigated(i.e.2000,2003,2006,2010,2013,2015 and 2019)with yearly overall accuracy more than 90%.The results showed that the total area of greenhouses in Guanzhong Plain demonstrated an increasing trend,from 5.92 km2 in 2000 to 194.42 km2 in 2019 with a considerable growth between 2010 and *** dominant drivers for the increase are largely attributed to the government policy as well as economic *** distribution of greenhouse shifts to central and eastern regions of Guanzhong *** preferentially expand to the area near to rural roads,main rivers,and high elevation,with more than 45%greenhouses distributed within 1 km of the county rural *** principal component analysis based suitability evaluation showed that a total of 38.44%of the area was suitable for greenhouse.

关键词： Greenhouse detection Landsat imagery Guanzhong Plain random forest algorithm Google Earth Engine

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Strategies for improving fertilizer phosphorus use efficiency in Chinese cropping systems

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Frontiers of Agricultural Science and Engineering 2019年第4期6卷 341-347页

作者： Gu FENG Jingping GAI Xionghan FENG Haigang LI Lin ZHANG Keke YI jialong lv Yiyong ZHU Li TANG Yilin LI College of Resources and Environmental Sciences China Agricultural UniversityBeijing 100193China College of Resources and Environment Huazhong Agricultural UniversityWuhan 430070China Key Laboratory of Plant Nutrition and Fertilizer Ministry of AgricultureInstitute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijing 100081China College of Natural Resources and Environment Northwest A&F UniversityYangling 712100China College of Resources and Environmental Sciences Nanjing Agricultural UniversityNanjing 210095China College of Resources and Environmental Sciences Yunnan Agricultural UniversityKunming 650201China State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China

A four-year project,entitled"The mechanisms of fraction transformation and high use efficiency of P fertilizer in Chinese cropping systems"commenced in *** project was established to answer three key questions and looked at 17 cropping systems on ten ***,we asked what are the dynamics of transformation,fixation and mobilization of P fertilizers in soil-cropping systems?Second,what are the mechanisms of soil-cropmicrobe interactions by which P fertilizer can be efficiently used?Third,how to manipulate the processes of P use in cropping systems?The targets of this project are(1)to explore the mechanisms of P fixation,the pathways of loss of P availability and the threshold of migration of fertilizer P in the field;(2)to uncover mechanisms by which soil legacy P is mobilized through root physiological and morphological processes and through arbuscular mycorrhizal fungi and P-solubilizing bacteria in rhizosphere and hyphosphere;(3)to estimate the biological potential of crops for high efficiency P absorption and use;(4)to innovate new approaches for improving the efficiency of P *** outcomes will provide theoretical support for setting standards for limitation of P fertilizer application rate in the main cropping zones of China.

关键词： fixation mobilization phosphorus fertilizer rhizosphere transformations utilization

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3种磷肥在北方6种土壤中的吸持固定特点

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河南科技大学学报（自然科学版） 2020年第4期41卷 75-81,M0007页

作者：王晓红柳小琪吴璐璐吕家珑西北农林科技大学资源环境学院陕西杨凌712100 西北农林科技大学农业部西北植物营养与农业环境重点实验室陕西杨凌712100

为了解决不同类型土壤中磷肥的合理选择和施用问题,通过室内培养试验,研究了聚磷酸铵、磷酸一铵和过磷酸钙配施硫铵在中国北方6种土壤(黑土、白浆土、棕壤、棕钙土、栗钙土和灰漠土)施入后的固定特点。研究结果表明:与对照相比,不同施... 详细信息

为了解决不同类型土壤中磷肥的合理选择和施用问题,通过室内培养试验,研究了聚磷酸铵、磷酸一铵和过磷酸钙配施硫铵在中国北方6种土壤(黑土、白浆土、棕壤、棕钙土、栗钙土和灰漠土)施入后的固定特点。研究结果表明:与对照相比,不同施肥处理均能增加土壤有效磷含量,使土壤酸碱度接近中性。不同类型土壤对磷的固定均可分为初期快速固定和后期慢速固定,初期快速固定发生在施肥后的10 d内。不同类型土壤对磷的固定作用不同,白浆土的累计固磷量最大,黑土则最小。

关键词：磷肥土壤类型有效磷土壤磷固定

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发酵牛粪和造纸干粉对土壤中多环芳烃降解的影响

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生态环境学报 2009年第6期18卷 2161-2165页

作者：杨婷胡君利王一明张晶吕家珑林先贵西北农林科技大学资源环境学院陕西杨凌712100 中国科学院南京土壤研究所//土壤与农业可持续发展国家重点实验室中国科学院南京土壤研究所-香港浸会大学土壤与环境联合开放实验室江苏南京210008

运用泥浆反应法研究添加发酵牛粪和造纸干粉对土壤中多环芳烃(PAHs)降解的影响。试验按水土比2∶1制成泥浆反应器,设置对照、添加2.5%发酵牛粪和添加2.5%造纸干粉等3个处理,25～28℃摇床培养,分别于10、20、30d采样测定土壤中多环芳烃... 详细信息

运用泥浆反应法研究添加发酵牛粪和造纸干粉对土壤中多环芳烃(PAHs)降解的影响。试验按水土比2∶1制成泥浆反应器,设置对照、添加2.5%发酵牛粪和添加2.5%造纸干粉等3个处理,25～28℃摇床培养,分别于10、20、30d采样测定土壤中多环芳烃降解菌的数量和多环芳烃含量。结果发现,所有处理土壤中多环芳烃的含量均随培养时间的延长而逐渐降低,而添加发酵牛粪和造纸干粉均有利于提高土壤中多环芳烃降解菌的数量,在培养30d后土壤中多环芳烃的降解率分别从对照处理的19%显著提高到37%和35%(P<0.05)。结果还发现,多环芳烃分环降解率随苯环数增加而下降,培养30d后土壤中2环多环芳烃的降解率达95%以上,3环多环芳烃的降解率为50%左右,对照处理4～6环多环芳烃的降解率为7%～13%,而添加发酵牛粪和造纸干粉处理土壤中4～6环多环芳烃的降解率显著提高到21%～28%(P<0.05),但对2～3环多环芳烃的降解无明显影响,表明这两种物质对土壤中多环芳烃降解的影响关键在于促进高环多环芳烃降解菌的生长繁殖及降解活性。

关键词：多环芳烃降解菌泥浆反应器有机废弃物分环降解率

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YOLO-RLC:An Advanced Target-Detection Algorithm for Surface Defects of Printed Circuit Boards Based on YOLOv5

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Computers, Materials & Continua 2024年第9期80卷 4973-4995页

作者： Yuanyuan Wang jialong Huang Md Sharid Kayes Dipu Hu Zhao Shangbing Gao Haiyan Zhang Pinrong lv School of Computer and Software Engineering Huaiyin Institute of TechnologyHuai’an223003China Huaiyin Institute of Technology Laboratory for Internet of Things and Mobile Internet Technology of Jiangsu ProvinceHuai’an223001China Jiangsu Kesheng Xuanyi Technology Co. Ltd.Huai’an223300China

Printed circuit boards(PCBs)provide stable connections between electronic ***,defective printed circuit boards may cause the entire equipment system to malfunction,resulting in incalculable ***,it is crucial to detect defective printed circuit boards during the generation *** detection methods have low accuracy in detecting subtle defects in complex background *** order to improve the detection accuracy of surface defects on industrial printed circuit boards,this paper proposes a residual large kernel network based on YOLOv5(You Only Look Once version 5)for PCBs surface defect detection,called YOLO-RLC(You Only Look Once-Residual Large Kernel).Build a deep large kernel backbone to expand the effective field of view,capture global informationmore efficiently,and use 1×1 convolutions to balance the depth of the model,improving feature extraction efficiency through reparameterization *** neck network introduces a bidirectional weighted feature fusion network,combined with a brand-new noise filter and feature enhancement extractor,to eliminate noise information generated by information fusion and recalibrate information from different channels to improve the quality of deep *** the aspect ratio of the bounding box to alleviate the issue of specificity *** training and testing on the PCB defect dataset,our method achieved an average accuracy of 97.3%(mAP50)after multiple experiments,which is 4.1%higher than YOLOv5-S,with an average accuracy of 97.6%and an Frames Per Second of *** comparative analysis also proves the superior performance and feasibility of YOLO-RLC in PCB defect detection.

关键词： Deep learning PCB defect detection large kernel noise filtering weighted fusion YOLO

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GR5 acts in the G protein pathway to regulate grain size in rice

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Plant Communications 2024年第1期5卷 181-195页

作者： Yueying Wang Yang lv Haiping Yu Peng Hu Yi Wen Junge Wang Yiqing Tan Hao Wu Lixin Zhu Kaixiong Wu Bingze Chai jialong Liu Dali Zeng Guangheng Zhang Li Zhu Zhenyu Gao Guojun Dong Deyong Ren Lan Shen Qiang Zhang Qing Li Longbiao Guo Guosheng Xiong Qian Qian Jiang Hu State Key Laboratory of Rice Biology and Breeding China National Rice Research InstituteHangzhou 310006China Hainan Yazhou Bay Seed Laboratory Sanya 572024HainanChina National Nanfan Research Institute(Sanya) Chinese Academy of Agricultural SciencesSanya 572024China Nanjing Agricultural University Nan Jing 210000JiangsuChina

Grain size is an important determinant of grain yield in *** dozens of grain size genes have been reported,the molecular mechanisms that control grain size remain to be fully ***,we report the cloning and characterization of GR5(GRAIN ROUND 5),which is allelic to SMOS1/SHB/RLA1/NGR5 and en-codes an AP2 transcription ***5 acts as a transcriptional activator and determines grain size by influencing cell proliferation and *** demonstrated that GR5 physically interacts withfive Gg subunit proteins(RGG1,RGG2,DEP1,GS3,and GGC2)and acts downstream of the G protein *** downstream target genes of GR5 in grain development(DEP2,DEP3,DRW1,and CyCD5;2)were re-vealed and their core T/CGCAC motif identified by yeast one-hybrid,EMSA,and ChIP–PCR *** results revealed that GR5 interacts with Gg subunits and cooperatively determines grain size by regu-lating the expression of downstream target *** provide new insight into the genetic reg-ulatory network of the G protein signaling pathway in the control of grain size and provide a potential target for high-yield rice breeding.

关键词： grain size G proteinγsubunit GR5 AP2 transcription factor rice(Oryza sativa L.)

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CO_(2)响应型Pickering乳液的构筑及应用

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化学通报 2023年第2期86卷 130-141页

作者：安嘉龙吕慧慧张卫珂单媛媛太原理工大学材料科学与工程学院太原030024

互不相溶的油/水两相在固体颗粒的作用下,其中一相以小液滴形式溶于另一相中形成的乳液称为Pickering乳液。由于其制备成本低、稳定性强且环境友好,目前已应用于医药、食品及化妆品等多个领域。在实际的应用中,具有长期稳定性质和可快... 详细信息

互不相溶的油/水两相在固体颗粒的作用下,其中一相以小液滴形式溶于另一相中形成的乳液称为Pickering乳液。由于其制备成本低、稳定性强且环境友好,目前已应用于医药、食品及化妆品等多个领域。在实际的应用中,具有长期稳定性质和可快速乳化/破乳的乳液在石油开采、催化等领域需求广泛,因而制备具有环境刺激响应性质的Pickering乳液迫在眉睫。与pH、磁场、温度、光等刺激手段相比,CO_(2)响应型乳液具有廉价易得、无污染、响应迅速、生物相容性好等优势,是解决产品循环回收问题的有效策略。目前CO_(2)刺激响应型Pickering乳液体系仍处于研究的初级阶段,且该乳液的响应机制、构筑策略仍有待明确和拓展。本文总结了Pickering乳液的稳定/响应机制,综述了CO_(2)响应型Pickering乳化剂的种类及构筑策略,列举了其在乳液聚合、界面催化、生物医药领域的应用进展,并展望了其未来的发展前景。

关键词： Pickering乳液 CO_(2)响应碳材料 SiO2

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蚯蚓在我国南方土壤修复中的应用

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生物多样性 2018年第10期26卷 1091-1102页

作者：张池周波吴家龙吕美蓉陈旭飞袁中友肖玲戴军华南农业大学资源环境学院农业部华南耕地保育重点实验室广东省土地利用与整治重点实验室广州510642 广东省农业科学院茶叶研究所广东省茶树资源创新利用重点实验室广州510640 齐鲁工业大学(山东省科学院)山东省科学院海洋仪器仪表研究所山东青岛260000

蚯蚓作为生物量最大的土壤动物,对土壤生态系统和环境质量影响深远。本研究介绍了华南地区主要应用的皮质远盲蚓(Amynthas corticis)、毛利远盲蚓(A. morrisi)、壮伟远盲蚓(A. robustus)、参状远盲蚓(A. aspergillum)、南美岸蚓(Pontosc... 详细信息

蚯蚓作为生物量最大的土壤动物,对土壤生态系统和环境质量影响深远。本研究介绍了华南地区主要应用的皮质远盲蚓(Amynthas corticis)、毛利远盲蚓(A. morrisi)、壮伟远盲蚓(A. robustus)、参状远盲蚓(A. aspergillum)、南美岸蚓(Pontoscolex corethrurus)和赤子爱胜蚓(Eisenia fetida)的生态特征,阐述了它们与土壤pH值、酶活性、金属富集和有效性改变、孔道和微团聚体形成之间的紧密关系:(1)蚯蚓生存的土壤酸碱性范围较广(p H为3.8–7.9),其存活率与土壤类型、有机质含量和成分、土壤污染程度和蚯蚓种类相关;(2)肠道内、蚓粪和蚓触圈的酶活性分别表征了蚯蚓取食喜好、土壤养分循环及微生物种群特征;(3)蚯蚓能够富集不同种类的金属并改变其有效性,这些变化具有蚓种间、金属种类间和土壤类型之间的差异;(4)蚯蚓活动及其生产的蚓粪能改变土体结构、产生孔道、影响土壤团聚体数量、大小和分布。蚯蚓的上述作用使其在解决中国南方红壤酸化、土壤金属污染、茶园土壤养分不平衡、高速公路建设临时用地土壤损毁等方面具有广阔的应用前景。目前,由于华南远盲蚓的生理特征差异研究较少,远盲蚓繁育技术的缺乏一定程度上限制了这些蚯蚓在中型和大型尺度下应用技术的研究和推广。有必要进一步挖掘蚯蚓在土壤修复中的潜力,进行蚯蚓主导的相关技术研发,深入探讨其影响机制。

关键词：蚯蚓华南土壤应用研究生态环境

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