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Rock-magnetic characteristics and mechanisms of the Titel loess-paleosol sequence in northern Serbia since late Middle Pleistocene

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Science China Earth Sciences 2022年第3期65卷 503-517页

作者： Zhi liu xiuming liu Slobodan B.MARKOVIC Bin LU Ruina HE College of Geography and Environment Baoji University of Arts and SciencesBaoji 721013China Key Laboratory of Disaster Monitoring and Mechanism Simulation of Shaanxi Province Baoji 721013China School of Geographical Sciences Fujian Normal UniversityFuzhou 350007China Department of Earth and Environmental Sciences Macquarie UniversitySydneyNSW 2109Australia Chair of Physical Geography Faculty of SciencesUniversity of Novi SadTrg Dositeja Obradovica 321000 Novi SadSerbia

The changing pattern of magnetic characteristics in eastern European loess deposits is the most similar across the world to that of the Chinese Loess Plateau,both of which are dominated by the strength of pedogenesis.Hence a systematical study to the rock magnetism of eastern European loess is not only helpful for understanding the paleoclimatic information preserved by themselves,but also beneficial for promoting the cognition of the pedogenic mechanism in loess records.In this study,a detailed rock-magnetic analysis of seventy loess/paleosol samples,taken from the Titel Loess Plateau in northern Serbia,is carried out for a better understanding of the magnetic records since late Middle Pleistocene.The results provide us some implications.First,the magnetic susceptibility values of the paleosols in the Titel loess-paleosol sequence are generally less than 100×10^(-8)m^(3)kg^(-1),significantly lower than those of the loess sections in the Chinese Loess Plateau,even though they are under similar climatic conditions.However,the behaviors of the parameters related to the distributions of magnetic particles in these two regions are similar.The difference in the contents of ferrimagnetic minerals is the leading reason that caused the difference in their magnetic characteristics,but the mechanism is still open to study.Second,based on the analysis of thermomagnetic curves,a gradually increasing trend of the relative contents of maghemite over the last four glacial-interglacial cycles is identified.The realization of thermally unstable maghemite from Chinese loess leads us to speculate that the long-term increasing trend of the relative contents of maghemite in Titel loess-paleosol sequence likely is a mineralogical response to the progressive enhancement of continental climate in the Pannonian Basin since the Middle Pleistocene.

关键词： Eastern European loess Magnetic susceptibility Pedogenesis Environmental magnetism Paleoclimate

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The safflower MBW complex regulates HYSA accumulation through degradation by the E3 ligase CtBB1

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Journal of Integrative Plant Biology 2023年第5期65卷 1277-1296页

作者： Yingqi Hong Yanxi Lv Jianyi Zhang Naveed Ahmad Xiaokun Li Na Yao xiuming liu Haiyan Li College of Life Sciences Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical DevelopmentJilinAgriculturalUniversityChangchun130118China Collegeof Tropical Crops Hainan UniversityHaikou 570100China Joint Center for Single Cell Biology School of Agriculture and BiologyShanghajiaotong UniversityShanghai 200240China Institute of Life Sciences Wenzhou Medical UniversityWenzhou 325000China Biomedical Collaborative Innovation Center of Zhejiang Province Wenzhou Medical UniversityWenzhou 325000China

The regulatory mechanism of the MBW(MYB-bHLH-WD40) complex in safflower(Carthamus tinctorius) remains unclear. In the present study,we show that the separate overexpression of the genes CtbHLH41, CtMYB63, and CtWD40-6 in Arabidopsis thaliana increased anthocyanin and procyanidin contents in the transgenic plants and partially rescued the trichome reduction phenotype of the corresponding bhlh41, myb63,and wd40-6 single mutants. Overexpression of CtbHLH41, CtMYB63, or CtWD40-6 in safflower significantly increased the content of the natural pigment hydroxysafflor yellow A(HYSA)and negatively regulated safflower petal size.Yeast-two-hybrid, functional, and genetic assays demonstrated that the safflower E3 ligase CtBB1(BIG BROTHER 1) can ubiquitinate CtbHLH41,marking it for degradation through the 26S proteasome and negatively regulating flavonoid accumulation. CtMYB63/CtWD40-6 enhanced the transcriptional activity of CtbHLH41 on the CtDFR(dihydroflavonol 4-reductase) promoter.We propose that the MBW-CtBB1 regulatory module may play an important role in coordinating HYSA accumulation with other response mechanisms.

关键词： CtBB1 hydroxysafflor yellow A MBW safflower ubiquitination

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Variations regularity of microorganisms and corrosion of cast iron in water distribution system

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Journal of Environmental Sciences 2018年第12期30卷 177-185页

作者： Wei Qiu Weiyu Li Junguo He Hongyu Zhao xiuming liu Yixing Yuan State Key Laboratory of Urban Water Resource and Environment School of Environment Harbin Institute of Technology Harbin Veterinary Research Institute Chinese Academy of Agricultural Sciences School of Architecture and Planning Jilin Jianzhu University School of Foreign Languages Harbin University of Science and Technology

Corrosion, one of the most common problems of metal pipe for water supply, generally leads to poor water quality, bacteria proliferation, water capacity decrease and other problems. As microorganisms affect corrosion by changing the characteristics of metal surface, the mechanism of microbial corrosion still remains unclear. The corrosion behavior of ductile cast iron is implemented in the dynamic flow and static conditions, in which variations of water quality and microbial community are analyzed in details. The results show that if the corrosion rate of ductile cast iron decreases, the corrosion of cast iron will result in a lower DO and a higher total iron in bulk water. The number of microorganisms is not a decisive factor of corrosion, even though the counts of bacteria had a close relationship with DO. On the basis of the detection of the 10 kinds of nitratereducing bacteria by Miseq sequencing, NRB of the biofilm biomass accounts for 18.3% on the 30 th day and 20.5% on the 55 th day. Even though aerobic NRBs go into the biofilm later than the facultative anaerobic NRBs, the growth of the anaerobic NRBs is not affected.

关键词： Water distribution system Ductile cast iron pipe Miseq sequencing

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Evaluation of the four potential Cretaceous-Paleogene (K-Pg) boundaries in the Nanxiong Basin based on evidences from volcanic activity and paleoclimatic evolution

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Science China Earth Sciences 2021年第4期64卷 631-641页

作者： Mengting ZHAO Mingming MA Mei HE Yudan QIU xiuming liu School of Geographical Sciences Fujian Normal UniversityFuzhou 350007China Key Laboratory of Humid Sub-tropical Eco-geographical Process of Ministry of Education Fujian Normal University'Fuzhou 350007China Key Laboratory for Subtropical Mountain Ecology Fujian Normal UniversityFuzhou 350007China Department of Environment and Geography Macquarie UniversitySydney NSW 2109Australia

Determining the location of the Cretaceous-Paleogene(K-Pg) boundary in terrestrial strata is highly significant for studying the evolution of terrestrial ecosystems at the end of the Cretaceous(especially the extinction of non-avian dinosaurs). At present, research on terrestrial K-Pg boundaries worldwide is concentrated in the middle and high latitudes, such as North America and Northeast China. Although many studies have also been carried out in the Nanxiong Basin, located at low latitudes(which has become the standard for dividing and comparing the continental K-Pg stratigraphy in China), many researchers have proposed four possible boundaries from different perspectives. Therefore, the exact location remains to be determined. In this study, the total mercury(Hg) content, environmental magnetism, geochemistry, and other parameters for the samples collected near the four boundaries were determined and compared with existing records. Results indicated that: 1) The total Hg content significantly increased in the upper part of the Zhenshui Formation and Pingling part of the Shanghu Formation with sharp fluctuations. As per latest dating results of Deccan Traps, the significantly high Hg value was attributed to the Deccan Traps eruption. Boundary 1 was located in the middle of the Hg anomaly interval, which was consistent with the relationship between the global K-Pg boundary and time of volcanic eruption. 2) The reconstructed paleoclimate evolution curve revealed that the red sediments in the basin recorded the late Maastrichtian warming event(66.2 Ma). Regarding the relationship between the four boundaries and this warming event, only boundary 1 was found to be closest to the real K-Pg boundary of the Nanxiong Basin.

关键词： Nanxiong Basin K-Pg boundary total Hg content late Maastrichtian warming event

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织物基金属有机框架复合材料的制备及应用研究进展

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材料工程 2024年第2期52卷 92-101页

作者：刘冬冬刘秀明房宽峻李政巩继贤李秋瑾天津工业大学纺织科学与工程学院天津300387 青岛大学生物多糖纤维成形与生态纺织国家重点实验室山东青岛266071 生态纺织省部共建协同创新中心山东青岛266071

金属有机框架(metal-organic frameworks,MOFs)材料作为第三代多孔材料,因其高比表面积、高稳定性、化学可调性等功能特性而备受关注,尤其在各种轻质和柔性基材上负载应用成为该领域的热点研究方向。本文综述了纺织基材作为载体,负载MOF... 详细信息

金属有机框架(metal-organic frameworks,MOFs)材料作为第三代多孔材料,因其高比表面积、高稳定性、化学可调性等功能特性而备受关注,尤其在各种轻质和柔性基材上负载应用成为该领域的热点研究方向。本文综述了纺织基材作为载体,负载MOFs的进展,对以溶剂热法、逐层生长法、喷涂打印法等构建织物基MOFs复合材料的方式进行阐述,且根据制备方式的差异性指出不同制备方式的应用场景;归纳了该类材料的复合机理;针对复合材料的使用耐久性总结了现有增强MOFs与基底材料结合牢固性的方法,并介绍了该类复合材料在超疏水自清洁、自消毒纺织品等领域应用的最新研究成果。最后指出织物基MOFs复合材料的大规模生产方式以及在现实环境条件下的耐久性是迈向广泛应用的关键步骤,其更多的一体化功能是未来研究的重点方向。

关键词：金属有机框架材料纺织材料制备方法应用性能

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Effects of organic mineral fertiliser on heavy metal migration and potential carbon sink in soils in a karst region

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Acta Geochimica 2017年第3期36卷 539-543页

作者： Ping Chen Yulong Ruan Shijie Wang xiuming liu Bin Lian Puding Karst Ecosystem Observation and Research Station State Key Laboratory of Environmental GeochemistryInstitute of Geochemistry Chinese Academy of Sciences Jiangsu Provincial Key Laboratory for Microbes and Functional Genomics College of Life Sciences Nanjing Normal University

Heavy metal pollution in karst mountainous area of Guizhou has spread due to the long-term exploitation of mineral resources and the improper disposal of environmentally hazardous waste. Heavy metals are characterised by non-degradation, strong toxicity, and constant accumulation, posing a grave threat to karst mountain fragile soil ecosystem. To reduce the harm caused by heavy metal pollution and damage to agricultural products, research was undertaken on the basis of previous work by simulating pot experiments on pak choi cabbage(Brassica rapa chinensis)planted in Cd-contaminated soil: different amounts of organic mineral fertilisers(OMF) compared with chemical fertiliser(CF) were used and by detecting the amount of heavy metal in the mature vegetable, a better fertilisation strategy was developed. The results showed that the Cd content in vegetables grown with CF was 23.70 mg/kg,while that of vegetables grown with OMF and bacterial inoculant was the lowest at 15.13 mg/kg. This suggests that the use of OMF and microbes in karst areas not only promotes plant growth but also hinders plant absorption of heavy metal ions in the soil. In addition, through the collection of pot leachate, the detection of water chemistrycharacteristics, and the calculation of the calcite saturation index, it was found that the OMF method also induces certain carbon sink effects. The results provide a new way in which rationalise the use of OMFs in karst areas to alleviate soil heavy metal pollution and increase soil carbon sequestration.

关键词：土壤生态系统喀斯特地区重金属迁移有机无机肥料固碳土壤重金属污染 Brassica 矿产资源开发

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CO_2 seasonal variation and global change: Test global warming from another point of view

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Research in Cold and Arid Regions 2017年第1期9卷 46-53页

作者： xiuming liu JiaSheng Chen School of Geographical Sciences Fujian Normal University Department of Environment and Geography Macquarie University

CO2 and temperature records at Mauna Loa, Hawaii, and other observation stations show that the correlation between CO2 and temperature is not significant. These stations are located away from big cities, and in various latitudes and hemi-spheres. But the correlation is significant in global mean data. Over the last five decades, CO2 has grown at an accelerating rate with no corresponding rise in temperature in the stations. This discrepancy indicates that CO2 probably is not the driving force of temperature change globally but only locally （mainly in big cities）. We suggest that the Earth＇s atmospheric concentration of CO2 is too low to drive global temperature change. Our empirical perception of the global warming record is due to the urban heat island effect： temperature rises in areas with rising population density and rising industrial activity. This effect mainly occurs in the areas with high population and intense human activities, and is not representative of global warming. Regions far from cities, such as the Mauna Loa highland, show no evident warming trend. The global monthly mean temperature calculated by record data, widely used by academic researchers, shows R2=0.765, a high degree of correlation with CO2 . However, the R2 shows much less significance （mean R2=0.024） if calculated by each record for 188 selected stations over the world. This test suggests that the inflated high correlation between CO2 and temperature （mean R2=0.765-0.024=0.741） used in reports from the Intergovernmental Panel on Climate Change （IPCC） was very likely produced during data correction and processing. This untrue global monthly mean temperature has created a picture： human emission drives global warming.

关键词： CO2 Mauna Loa Hawaii seasonal variations greenhouse effect global warming

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Effects of mineral-organic fertilizer on the biomass of green Chinese cabbage and potential carbon sequestration ability in karst areas of Southwest China

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Acta Geochimica 2019年第3期38卷 430-439页

作者： Qibiao Sun Yulong Ruan Ping Chen Shijie Wang xiuming liu Bin Lian Jiangsu Key Laboratory for Microbes and Functional Genomics College of Life Sciences Nanjing Normal University Qingdao Pony Testing International Group State Key Laboratory of Environmental Geochemistry Institute of Geochemistry Chinese Academy of Sciences Puding Karst Ecosystem Research Station Chinese Ecosystem Research Network Chinese Academy of Sciences

The karst mountain areas of Southwest China contain barren farmland soils and suffer from nutritional and water deficiencies that affect crop productivity. Hence,it is imperative to apply suitable fertilizers to restore soil fertility and maintain crop yield. The aim of this study is to investigate the effects of mineral-organic fertilizer(MOF)made of potassic rock and organic waste on the growth of crops. For this purpose, green Chinese cabbage grown using three different fertilization methods including MOF,inorganic fertilizer(IF), and a control was evaluated. We determined soil water content, agronomic characteristics,and biomass of green Chinese cabbage in different treatments. Furthermore, surface runoff from the pot experiments and soil leachate from pot experiments were collected to determine water temperature, pH, and cation and anion concentrations. The results demonstrate thatMOF can improve the soil water-holding capacity of soil,and the basic agronomic characteristics of the cabbage treated with MOF were superior to those with IF. Using MOF can promote the increase in cabbage biomass.Additionally, the concentration of inorganic carbon(largely in the form of HCO_3^-) in surface runoff water treated by MOF was higher than the other treatments, establishing carbon sequestration potential. This work provides a novel and environmentally friendly fertilization pattern in karst areas, which will improve crop yield and also increase the carbon sequestration potential of crops.

关键词： Potassic rock Carbonate Karst Ion chromatograph Carbon sequestration

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Adsorption removal of roxarsone, arsenite(Ⅲ),and arsenate(Ⅴ) using iron-modified sorghum straw biochar and its kinetics

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Acta Geochimica 2021年第3期40卷 409-418页

作者： Shuyan Zang Yingying Zuo Juan Wang xiuming liu Mario Alberto Gomez Lan Wei Liaoning Engineering Research Center for Treatment and Recycling of Industrially Discharged Heavy Metals Shenyang University of Chemical TechnologyShenyang 110142China Shenyang University of Chemical Technology Shenyang 110142China State Key Laboratory of Environmental Geochemistry Institute of GeochemistryChinese Academy of SciencesGuiyang 550081China

Arsenic(As)contamination in groundwater is a major problem in many countries,which causes serious health issues.In this paper,a novel method has been developed for the simultaneous removal of ROX and As(Ⅲ/Ⅴ)using the modified sorghum straw biochar(MSSB).The MSSB was characterized by X-ray diffraction,scanning electron microscopy,Fourier Transform Infrared,and Brunauer–Emmet–Teller(BET)surface area.The removal performance of MSSB for ROX,arsenite[As(Ⅲ)],and arsenate(As(Ⅴ))was investigated using batch experiments.At pH of 5,the arsenic concentration of 1.0 mg/L,adsorbent dose of 1.0 g/L,the maximum adsorptioncapacities of ROX,As(Ⅲ),and As(Ⅴ)were 12.4,5.3,and 23.0 mg/g,respectively.The adsorption behaviors were fit well with the Langmuir and the pseudo-second-order rate model.The results showed that MSSB acted as a highly effective adsorbent to simultaneously remove the composite pollution system consisted of ROX and As(Ⅲ/Ⅴ)in aqueous solutions,providing a promising method in environmental restoration applications.

关键词： Roxarsone Arsenic Arsenate Sorghum straw biochar Adsorption

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民事案件异步审理:价值、问题与规则构建

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江苏理工学院学报 2024年第3期30卷 93-103页

作者：罗会刘秀明四川轻化工大学法学院四川自贡643000

推进异步审理模式不断探索电子诉讼应用深度的改革,不仅符合现代民事诉讼制度的发展逻辑,也顺应科技融合司法的社会发展规律。异步审理模式具有程序正当性且满足时代需求。通过对异步审理规范以及司法实践运行情况的考察,梳理当下异步... 详细信息

推进异步审理模式不断探索电子诉讼应用深度的改革,不仅符合现代民事诉讼制度的发展逻辑,也顺应科技融合司法的社会发展规律。异步审理模式具有程序正当性且满足时代需求。通过对异步审理规范以及司法实践运行情况的考察,梳理当下异步审理的适用存在定位不明和条件范围不统一的问题;提出应当立法明确异步审理模式的定位,使其成为独立于传统诉讼和线上同时审理的一种新型审判方式;建议司法实务应当统一适合异步审理模式的诉讼程序范围、案件类型范围、法院范围以及适用条件。

关键词：民事庭审异步审理新型审判方式适用范围适用条件

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