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Field testing of shear strength of granite residual soils

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第9期16卷 3718-3732页

作者： song Yin Pengfei Liu Xianwei Zhang Wenyuan He Pan Yan Yuzhou sun School of Civil Engineering and Architecture Zhongyuan University of TechnologyZhengzhou450007China State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhan430071China

The characteristics of residual soils are very different from those of sedimentary *** the strength characteristics of sedimentary soils have been studied extensively,the shear strength characteristics of granitic residual soils(GRS)subjected to the weathering of parent rocks have rarely been *** this study,the shear strength characteristics of GRS in the Taishan area of southeast China(TSGRS)were studied by field and laboratory *** field tests consisted of a cone penetration test(CPT),borehole shear test(BST),self-boring pressuremeter test(SBPT),and seismic dilatometer Marchetti test(SDMT).The shortcomings of laboratory testing are obvious,with potential disturbances arising through the sampling,transportation,and preparation of soil *** to the special structure of GRS samples and the ease of disturbance,the results obtained from laboratory tests were generally lower than those obtained from situ *** CPT and scanning electron microscopy(SEM)results indicated significant weathering and crustal hardening in the shallow *** resulted in significant differences in the strength and strength parameters of shallow soil obtained by the *** on the SDMT and SBPT results,a comprehensive evaluation method of shear strength for TSGRS was *** SBPT was suitable for evaluating the strength of shallow *** material index(ID)and horizontal stress index(KD)values obtained by the SDMT satisfied the empirical relationship proposed by Marchetti based on the ID index,and were therefore considered suitable for the evaluation of the shear strength of deep GRS.

关键词： Granite residual soils Shear strength Field tests Self-boring pressuremeter Seismic dilatometer Borehole shear test

Iridocorneal Endothelial Syndrome in a Chinese Child

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Eye Science 2013年第3期28卷 153-156页

作者： Wei Tang Qinghua Wang Qing Zhang song sun Yinong zhang Zhifeng Wu Department of Ophthalmology Wuxi Second Hospital Affiliated Nanjing Medical University

Purpose: We reported a rare case of ICE syndrome in a Chinese *** report: A 6-year-old child was admitted to the ophthalmology department of the Affiliated Wuxi Second Hospital of Nanjing Medical University, complaining of elevated intraocular pressure at his first diagnosis in a local hospital. The patient was initially treated with medication..During subsequent follow up,.two iris holes were seen in the patient's right eye and he was then diagnosed with ICE syndrome. The child underwent surgery combined with mitomycin C *** intraocular pressure was stably ***:.ICE syndrome has been rarely reported in children. Glaucoma filtering surgery combined with intraoperative administration of mitomycin is efficacious for intraocular pressure control.

关键词：综合征儿童中国虹膜丝裂霉素C 内皮角膜药物治疗

Light-responsive Self-Immolative L-glutamic Acid-based Polyester Nanoparticles for Controlled Drug Release via Passerini Three-Component Polymerization

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Chinese Journal of Polymer Science 2024年第5期42卷 570-578,I0005页

作者： Xiao-Fei sun Xu Zhang Shu-Ping song Ya-Qun Yao Yan Zhang Cheng-Liang Wang Jing-Jiang sun Qing-Fu Wang Key Laboratory of Rubber-plastics Ministry of EducationSchool of Polymer Science and EngineeringQingdao University of Science and TechnologyQingdao266042China Qingdao Research Academy of Environmental Science Qingdao266012China

L-glutamic acid(LA)is a bio-based,non-toxic,environmentally friendly material derived from *** present study reports the application of Passerini three-component polymerization(P-3CP)for the straightforward preparation of LA-based light-responsive polyesters(PLTDs)under mild *** with molar masses up to 8500 g/mol and high yields exceeding 90%are *** chemical structures and light-responsive self-immolative behavior of PLTDs are comprehensively characterized by employing ultraviolet-visible(UV-Vis)spectroscopy,size exclusion chromatography(SEC),nuclear magnetic resonance(NMR)spectroscopy,and liquid chromatography mass spectrometry(LC-MS).Meanwhile,monodisperse PLTD-based doxorubicin-loaded nanoparticles(PLTD-DOX-NP)(size=193 nm,PDI=0.018)are formulated by nanoprecipitation *** light-induced depolymerization,the PLTD-DOX-NP undergoes rapid decomposition,resulting in a burst release of 80%cargo within 13 ***,according to biological toxicity tests,the PLTD-NP possesses adequate biosafety,both before and after ***,the incorporation of P-3CP with biorenewable LA-based monomer adheres to the principles of green chemistry,significantly simplifying the synthetic pathway of light-responsive polymers.

关键词： L-glutamic acid Passerini three-component polymerization Light-responsive Polyester Nanoparticles

Graphene-anchored sodium single atoms:A highly active and stable catalyst for transesterification reaction

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Nano Research 2024年第6期17卷 4979-4985页

作者： song-song Peng Yao Nian Xing-Ru song Xiang-Bin Shao Chen Gu Zhi-Wei Xing Shi-Chao Qi Peng Tan You Han Xiao-Qin Liu Lin-Bing sun State Key Laboratory of Materials-Oriented Chemical Engineering Jiangsu National Synergetic Innovation Center for Advanced Materials(SICAM)College of Chemical EngineeringNanjing Tech University30 South Puzhu RoadNanjing 211816China School of Chemical Engineering and Technology Tianjin UniversityTianjin 300072China Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192China

Solid strong base catalysts have received considerable attention in various organic reactions due to their facile separation,neglectable corrosion,and environmental *** great progress has been made in the preparation of solid strong base catalysts,it is still challenging to avoid basic sites aggregation on support and active sites loss in reaction ***,we report a tandem redox strategy to prepare Na single atoms on graphene,producing a new kind of solid strong base catalyst(Na1/G).The base precursor NaNO_(3)was first reduced to Na2O by graphene(400℃)and successively to single atoms Na anchored on the graphene vacancies(800℃).Owing to the atomically dispersed of basicity,the resultant catalyst presents high activity toward the transesterification of methanol and ethylene carbonate to synthesize dimethyl carbonate(turnover frequency(TOF)value:125.7 h^(−1)),which is much better than the conventional counterpart Na2O/G and various reported solid strong bases(TOF:1.0-90.1 h^(−1)).Furthermore,thanks to the basicity anchored on graphene,the Na1/G catalyst shows excellent durability during *** work may provide a new direction for the development of solid strong base catalysts.

关键词： solid strong base catalyst basic sites redox graphene single Na atoms

Environmental toxicity assessment of chromium (III) oxide nanoparticles using a phytotoxic, cytotoxic, and genotoxic approach

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Emerging Contaminants 2024年第2期10卷 76-82页

作者： Uhram song Kwon Soon Pyo Ho Hyun song sun ryung Lee Jieun Kim Department of Biology Jeju National UniversityJeju63243South Korea Department of Interdisciplinary Program in Biomedical Science Graduate SchoolSoonchunhyang UniversityAsanChungcheongnam-doSouth Korea Department of Laboratory Medicine Soonchunhyang University Seoul HospitalSeoul04401South Korea

Chromium(III)oxide nanoparticles(NPs)have a wide range of industrial applications,particularly in the production of lithium-ion batteries;however,the toxicity of these NPs has not been studied *** phytotoxicity and genotoxicity of chromium(III)oxide NPs have not been assessed,and only one study reported their cytotoxicity,underscoring the need to perform comprehensive toxicity studies on these ***,we showed that chromium(III)oxide NPs had no effect on germination rates,and only decreased root elongation in *** as determined by root elongation and biomass ***(III)oxide NPs had no phytotoxic effects under environmental realistic conditions,whereas they had cytotoxic effects against HK-2 and Raw 264.7 cells in ***,the cytotoxicity of chromium(III)oxide NPs did not occur under environmentally realistic *** genotoxicity of chromium(III)oxide NPs was not significant in HK-2 cells,suggesting that the potential environmental cytotoxicity of chromium(III)oxide NPs is *** study proposes comprehensive phytotoxicity,cytotoxicity,and genotoxicity testing tools that would be easy,safe,and effective for evaluating the toxicity of *** integrated testing system could be an accurate and stable method for evaluating the toxicity of other nanomaterials.

关键词： Nanoparticle Plant growth Cell viability Chromium(III)oxide Nephrotoxicity

A Discussion on the Petrological Characteristics and Relationship Between Magma Evolution and Ore Formation at Tongchang Porphyry Copper Deposit of Jiangxi Province

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A Discussion on the Petrological Characteristics and Relatio...

作者： sun Haitian song Shuhe

＜正＞The ore deposit is located on the SE border of the Jiangnan Oldmass adjoining the Qiantang depression. The ore bodies occur in two types of rocks different both in time and characters: first, the Proterozoic low-grade metamorphic rocks of the Shuangqiaoshan Group with an isotopic age （Rb-Sr method） of 1,401 Ma;second, the small intrusive body of the porphyritic

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对海洋科学的认识与实践

海洋与湖沼 2017年第6期48卷 1488-1492页

作者：孙松中国科学院海洋研究所海洋生态与环境科学重点实验室青岛266071 胶州湾海洋生态系统国家野外科学观测研究站青岛266071 中国科学院大学北京100049 青岛海洋科学与技术国家实验室海洋生态与环境科学功能实验室青岛266071

"热带西太平洋海洋系统物质能量交换及其影响"是中国科学院海洋领域投入最大、参加人员最多的一个海洋科学先导项目,该项目使我们第一次有机会从海洋系统角度研究中国近海到西太平洋的一些海洋前沿问题。来自物理、化学、生物、地质和... 详细信息

"热带西太平洋海洋系统物质能量交换及其影响"是中国科学院海洋领域投入最大、参加人员最多的一个海洋科学先导项目,该项目使我们第一次有机会从海洋系统角度研究中国近海到西太平洋的一些海洋前沿问题。来自物理、化学、生物、地质和大气等不同学科的科学家们围绕共同的问题,在同一个区域、从不同方向开展协同研究。目前,海洋先导专项已在深海探索与研究、海洋能力建设、科考平台建设、技术队伍建设、科研与技术有机融合的体系建设和海洋前沿探索方面取得一系列突破,为全面、综合地开展深海资源的探测与近海生态安全研究奠定了重要基础。海洋先导专项更多系统性、有影响力的成果将在未来不断涌现出来。

关键词：热带西太平洋深海探测与研究海洋装备研发海洋未来发展

Improving dryland maize productivity and water efficiency with heterotrophic ammonia-oxidizing bacteria via nitrification and cytokinin activity

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The Crop Journal 2024年第3期12卷 880-887页

作者： Xiaoling Wang Jiawei Cao Runhong sun Wei Liu Lin Qi Peng song Shenjiao Yang College of Agronomy Henan University of Science and TechnologyLuoyang 471003HenanChina Institute of Plant Protection Research Henan Academy of Agricultural SciencesZhengzhou 450099HenanChina Farmland Irrigation Research Institute Chinese Academy of Agricultural SciencesXinxiang 453000HenanChina

A two-year field experiment conducted under dryland conditions in semi-humid and drought-prone regions of China aimed to assess the effect of ammonia-oxidizing bacterial on maize water use efficiency and yield.A heterotrophic ammonia-oxidizing bacteria(HAOB)strain S2_8_1 was *** treatments were applied:(1)no irrigation+HAOB strain(DI),(2)no irrigation+blank culture medium(DM),(3)no irrigation control(DCK),(4)irrigation+HAOB(WI),(5)irrigation+blank culture medium(WM),and(6)irrigation control(WCK).Results revealed that HAOB treatment increased maize growth,yield,and water use efficiency over controls,regardless of whether the year was wet or *** improvement was attributed to the accelerated nitrification in the rhizosphere soil due to HAOB inoculation,which subsequently led to increased levels of leaf ***,these findings suggest that HAOB inoculation holds promise as a strategy to boost water use efficiency and maize productivity in dryland agriculture.

关键词： Heterotrophic ammonia-oxidizing bacteria Rhizosphere soil nitrification Cytokinin Maize Dryland agriculture

Using NH_(2)-MIL-125(Ti)for efficient removal of Cr(Ⅵ)and Rh B from aqueous solutions:Competitive and cooperative behavior in the binary system

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Journal of Environmental Sciences 2024年第2期136卷 437-450页

作者： Lei Zheng Lixia sun Jiangbo Qiu Junling song Luyi Zou Yue Teng Yongzhong Zong Hongyan Yu School of Environmental and Civil Engineering Jiangnan UniversityWuxi 214122China School of Chemical and Material Engineering Jiangnan UniversityWuxi 214122China Kunming South Water Co. Ltd.Kunming 650501China Jiangsu Key Laboratory of Anaerobic Biotechnology Jiangnan UniversityWuxi 214122China

The coexistence of inorganic and organic contaminants is a challenge for real-life water treatment ***,in this research,we used NH_2-MIL-125(Ti)to evaluate the single adsorption of hexavalent chromium(Cr(Ⅵ))or Rhodamine B(RhB)in an aqueous solution and further investigate simultaneous adsorption experiments to compare the adsorption behavior *** main influencing factors,for example,reaction time,initial concentration,reaction temperature,and pH were studied in *** all reaction systems,the pseudo-second-order kinetic and Langmuir isotherm models were well illuminated the adsorption progress of Cr(Ⅵ)and *** studies showed that the adsorption process was spontaneous and *** compared to the single system,the adsorption capacity of Cr(Ⅵ)in the binary system gradually decreased as the additive amount of RhB increased,whereas the adsorption capacity of RhB in the binary system was expanded *** the binary reaction system contained 100 mg/L Cr(Ⅵ),the removal rate of RhB increased to 97.58%.The formation of Cr(Ⅵ)-RhB and Cr(Ⅲ)-RhB complexes was the cause that provided facilitation for the adsorption of *** findings prove that the interactions during the water treatment process between contaminants may obtain additional benefits,contributing to a better adsorption capacity of co-existing contaminant.

关键词： Adsorption Heavy metal ion Organic dye Simultaneous removal Mechanism studies