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烤烟与芳香植物间作对烟株生长发育及产质量的影响

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中国农学通报 2024年第19期40卷 7-11页

作者：张玺梁增发罗强蔡正学李淮源广东中烟工业有限责任公司广州510310 云南省烟草公司普洱市景东县公司云南普洱676200 华南农业大学基础实验与实践训练中心广州510642

为探索烤烟与芳香植物间作对烟株生长发育及产质量的作用效果,采用大田试验开展烤烟与百合、菊花、香茅和紫茉莉的间作研究。结果表明,烤烟间作芳香植物对烤烟的株高、茎围、节距的影响并不明显,但不同部位的叶面积有一定程度的减小。... 详细信息

为探索烤烟与芳香植物间作对烟株生长发育及产质量的作用效果,采用大田试验开展烤烟与百合、菊花、香茅和紫茉莉的间作研究。结果表明,烤烟间作芳香植物对烤烟的株高、茎围、节距的影响并不明显,但不同部位的叶面积有一定程度的减小。烤烟间作百合、菊花能提高中部叶烤烟烟碱和钾含量,同时降低糖含量,上部叶和中部叶的氮碱比和糖碱比更接近优质烟叶的标准范围。烤烟与芳香植物间作主要对烟叶香气质、刺激性和劲头产生显著影响,其中,以烤烟间作百合、烤烟间作香茅对烤烟感官质量的改善最为明显。烤烟间作百合对烤烟产量、产值、均价、上等烟比例和中部叶比例的提升最为显著。综合而言,烤烟间作百合对烟株生长发育和烤后烟叶产质量提升作用最显著。

关键词：烤烟芳香植物间作生长发育产质量

An integrated bioinformatics analysis and experimental study identified key biomarkers CD300A or CXCL1,pathways and immune infiltration in diabetic nephropathy mice

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BIOCELL 2022年第8期46卷 1989-2002页

作者： WEI LIANG qiang luo ZONGWEI ZHANG KEJU YANG ANKANG YANG QINGJIA CHI HUAN HU Division of Nephrology Renmin Hospital of Wuhan UniversityWuhanChina Nephrology and Urology Research Institute of Wuhan University WuhanChina The First College of Clinical Medical Science China Three Gorges UniversityYichangChina Department of Engineering Structure and Mechanics Wuhan University of TechnologyWuhanChina School of Life Science and Engineering Southwest Jiaotong UniversityChengdu610000China

Diabetic nephropathy(DN)is a common microvascular complication that easily leads to end-stage renal *** is important to explore the key biomarkers andmolecular mechanisms relevant to diabetic nephropathy(DN).We used highthroughput RNA sequencing to obtain the genes related to DN glomerular tissues and healthy glomerular tissues of *** we used LIMMA to analyze differentially expressed genes(DEGs)between DN and non-diabetic glomerular *** we performed KEGG,gene ontology functional(GO)enrichment,and gene set enrichment analysis to reveal the signaling pathway of the *** CIBERSORT algorithm based on support vector machine was used to determine the immune infiltration *** forest algorithm and Cytoscape obtained hub ***,we applied co-staining,immunohistochemical staining,RT-qPCR and western blotting to validate the protein and mRNA expression of both hub *** obtained 913 DEGs mainly related to inflammatory factors and *** results showed that differential genes were mainly enriched in IL-17 signaling pathway,lipid and atherosclerosis,rheumatoid arthritis,TNF signaling pathway,neutrophil extracellular trap formation,Staphylococcus aureus infection and other *** intersection of the random forest algorithm and Cytoscape revealed both hub genes of CD300A and *** have shown that the both key genes of CD300A and CXCL1 shown increased expression in glomerular podocytes,and are related to the inflammation of diabetic *** immunohistochemical staining and RT-qPCR further confirmed that the protein and mRNA expression level of CD300A or CXCL1 in glomeruli tissue in DN mice were *** expression levels of CD300A and CXCL1 increased significantly under HG(high glucose)stimulation,further confirming that diabetes can lead to increased levels of CD300A and CXCL1 at the cellular *** bioinformatics analysis,machine learning algorithms,and experimental research,CD300A and CXCL

关键词： Diabetic nephropathy Immune infiltration Machine learning Bioinformatics Biomarkers

Polymeric dual-modal imaging nanoprobe with two-photon aggregation-induced emission for fluorescence imaging and gadolinium-chelation for magnetic resonance imaging

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Bioactive Materials 2023年第1期19卷 538-549页

作者： Xueyang Xiao Hao Cai Qiaorong Huang Bing Wang Xiaoming Wang qiang luo Yinggang Li Hu Zhang Qiyong Gong Xuelei Ma Zhongwei Gu Kui luo Department of Radiology Department of BiotherapyHuaxi MR Research Center(HMRRC)Laboratory of Stem Cell BiologyCancer CenterDepartment of UltrasoundNational Clinical Research Center for GeriatricsFrontiers Science Center for Disease-Related Molecular NetworkState Key Laboratory of BiotherapyWest China HospitalSichuan UniversityChengdu610041China Functional and Molecular Imaging Key Laboratory of Sichuan Province Research Unit of PsychoradiologyChinese Academy of Medical SciencesChengdu610041China Amgen Bioprocessing Centre Keck Graduate InstituteCA91711USA

Nanoprobes that offer both fluorescence imaging(FI)and magnetic resonance imaging(MRI)can provide supplementary information and hold synergistic ***,synthesis of such dual-modality imaging probes that simultaneously exhibit tunability of functional groups,high stability,great biocompatibility and desired dual-modality imaging results remains *** this study,we used an amphiphilic block polymer from(ethylene glycol)methyl ether methacrylate(OEGMA)and N-(2-hydroxypropyl)methacrylamide(HPMA)derivatives as a carrier to conjugate a MR contrast agent,Gd-DOTA,and a two-photon fluorophore with an aggregation-induced emission(AIE)effect,TPBP,to construct a MR/two-photon fluorescence dual-modality contrast agent,*** of gadolinium in the hydrophilic chain segment of the OEGMA-based carrier resulted in a high r_(1)value for Gd-DOTA-TPBP,revealing a great MR imaging *** contrast agent specifically accumulated in the tumor region,allowing a long enhancement duration for vascular and tumor contrast-enhanced MR ***,coupling TPBP with AIE properties to the hydrophobic chain segment of the carrier not only improved its water solubility and reduced its cytotoxicity,but also significantly enhanced its imaging performance in an aqueous ***-DOTA-TPBP was also demonstrated to act as an excellent fluorescence probe for two-photon-excited bioimaging with higher resolution and greater sensitivity than *** high-resolution,complementary MRI/FI dual-modal images were acquired at both cellular and tissue levels in tumor-bearing mice after application of Gd-DOTA-TPBP,it has great potential in the early phase of disease diagnosis.

关键词： RAFT polymerization Amphiphilic block polymers Magnetic resonance/fluorescence dual-modal imaging Tumor/vascular imaging Two-photon AIE fluorescent contrast agent

Damage characteristics of YAG transparent ceramics under different loading conditions

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Defence Technology（防务技术） 2022年第8期18卷 1394-1404页

作者： Kuo Bao Xian-feng Zhang Gui-ji Wang Jia-jie Deng Tao Chong Dan Han Bing-qiang luo Meng-ting Tan School of Mechanical Engineering Nanjing University of Science&TechnologyNanjing210094China Institute of Fluid Physics CAEPMianyang621900China Shanghai Institute of Ceramics Chinese Academy of SciencesShanghai200050China

YAG (Y_(3)Al_(5)O_(12)) transparent ceramics have attractive application prospects for transparent armor protection modules because of their excellent light transmittance and anti-ballistic capability. Understanding the fracture behavior and damage mechanism of YAG is necessary for armor design. To explore the damage characteristics of YAG under compression and tension, shock compression and shockless spalling experiments with soft recovery technique are conducted. The spall strength of YAG is obtained and the recovered samples are observed by CT and SEM. It is shown that the macroscopic damage characteristic of YAG under compression is vertical split cracks with oblique fine cracks distributed in the entire sample, while that under tension is horizontal transgranular cracks concentrated near the main spall surface. The cracks generated by macroscopic compression, tension and shear stress extend in similar tensile form at the microscale. The proportion of transgranular fractures on spall surfaces is higher than that of cracks induced by macroscopic compression. Meanwhile, higher loading rate and longer loading duration increase the transgranular fracture percentage.

关键词： YAG transparent Ceramics Damage characteristics Impact loading Shock compression Spall strength

Heterogeneous GdTbDyCoAl high-entropy alloy with distinctive magnetocaloric effect induced by hydrogenation

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Journal of Materials Science & Technology 2022年第14期109卷 147-156页

作者： Liliang Shao Lin Xue qiang luo Kuibo Yin Zirui Yuan Mingyun Zhu Tao Liang Qiaoshi Zeng Litao Sun Baolong Shen School of Materials Science and Engineering Jiangsu Key Laboratory of Advanced Metallic MaterialsSoutheast UniversityNanjing 211189China SEU-FEI Nano-Pico Center Key Laboratory of MEMS of Ministry of EducationSchool of Electronic Science and EngineeringSoutheast UniversityNanjing 210018China College of Mechanics and Materials Hohai UniversityNanjing 211100China Center for High Pressure Science and Technology Advanced Research PudongShanghai 201203China

Developing novel magnetocaloric materials is of great significance for the applications of magnetic *** this study,we designed a heterogeneous rare-earth-based high-entropy alloy(HEA)comprising amorphous matrix,local crystal-like cluster and nanocrystalline dihydride with average size of 7.5 nm through isothermal *** heterogeneous structure can significantly tune the magnetocaloric effect of *** hydrogenation,the predominant exchange interaction transforms from ferromagnetic to antiferromagnetic with the disappearance of spin-glass-like behavior,and a complete second-order magnetic transition is *** with the Gd_(20)Tb_(18)Dy_(18)Co_(20)Al_(24) high-entropy metallic glass with a small number of nanocrystals,the maximum magnetic entropy change of the hydrogen-containing HEA is increased from 8.8 to 13.6 J kg^(-1)K^(-1) under applied magnetic field change of 5 T accompanying unobvious hysteresis and decreased magnetic transition temperature from 59 to 8 K,which is more promising as magnetic refrigerant at cryogenic *** work provides a novel concept of designing heterogeneous structure in terms of special cluster and preferential nanocrystalline to modulate the properties of metallic glasses.

关键词： High-entropy metallic glass Hydrogenation Heterogeneous structure Magnetocaloric effect

Effects of Different Cations on the Flocculation and Sedimentation of Static Fine-Grained

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Journal of Environmental & Earth Sciences 2023年第2期5卷 1-14页

作者： Xiaomin Liu Yaotian Yang Rui Wang Wenjuan Wang qiang luo College of Water Conservancy and Civil Engineering Inner Mongolia Agricultural UniversityHohhotInner Mongolia010018China Collaborative Innovation Center for Integrated Management of Water Resources and Water Environment in the Inner Mongolia Reaches of the Yellow River HohhotInner Mongolia010018China Inner Mongolia JinHua Yuan Environmental Resource Engineering Consulting Co. ItdHohhotInner Mongolia010020China Wuhai Wuda District Agriculture of Animal Husbandry and Water Affairs Bureau WuhaiInner Mongolia016000China Yellow River Hai Bo-Wan Water Conservancy Project Development Center WuhaiInner Mongolia016000China

Natural water bodies mostly contain cations,and the type and content of these cations are the main factors affecting the flocculation of fine-grained cohesive sediments and the floc sedimentation rate at the interface between clear and turbid *** the microscopic aspect,this study examined the changing patterns of porosity and the fractal dimension of the flocs of fine-grained cohesive *** experiments under different sediment contents and electrolyte conditions were conducted,and microscopic images of the flocs were analysed using Image-Pro Plus(IPP)and MATLAB based on the fractal *** the macroscopic aspect,this study experimentally investigated the flocculation and sedimentation of fine-grained cohesive sediments and proposed a sedimentation rate equation by introducing an ion concentration-related parameter into an existing sedimentation rate equation(stagnation zone)based on the adsorption isotherm *** equation proposed in this study was validated with measured *** calculated values were in good agreement with the measured values,with a relative error of 16%.The findings of this study provide a reference for further research on the flocculation and sedimentation of fine-grained cohesive sediments in different water bodies.

关键词： Flocs Electrolyte Fractal dimension Porosity Sedimentation rate

Crack mechanism of ground fissures in loess layer of Fenwei Basin, China

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Journal of Mountain Science 2024年第5期21卷 1683-1696页

作者： LI Cong LU Quanzhong WANG Feiyong luo Wenchao XU qiang School of Geological Engineering and Geomatics Chang’an UniversityXi’an 710054China Key Laboratory of Western Mineral Resources and Geological Engineering Ministry of EducationXi’an 710054China Observation and Research Station of Ground Fissure and Land Subsidence Ministry of Natural ResourcesXi’an 710054China School of Engineering and Technology China University of GeosciencesBeijing 100083China

The Fenwei Basin, covered by loess, experiences severe ground fissure disasters. These disasters disrupt the continuity of the loess and pose significant threats to engineering construction safety along transportation routes. Nevertheless, the crack characteristics and the influence zone of ground fissures in the loess layer remain inadequately investigated. To effectively prevent and control ground fissure disasters, physical model tests and the PFC(particle flow code) numerical simulation method are used to investigate the crack mechanism of buried ground fissures in the loess layer. The results show that there are two main cracks in the layer profile, which have a Y-shape morphology. As the dip angle of the preset cracks increased from 60° to 90°, the main deformation zone at the surface gradually shifted towards the footwall. The process of crack propagation from depth to surface is divided into five stages. Additionally, the results confirm the accuracy of the width of the rupture zone d2in the footwall calculated by the cantilever beam theory. These findings can offer theoretical guidance for determining the avoidance distance of ground fissures in loess regions, as well as for implementing disaster prevention and corresponding control measures for various stages of buried ground fissure propagation.

关键词： Ground fissure Fenwei Basin Physical model test Particle flow code Crack propagation

Numerical solution of potential flow equations with a predictor-corrector finite difference method

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Journal of Zhejiang University-Science C(Computers and Electronics) 2012年第5期13卷 393-402页

作者： Zhi-qiang luo Department of System Science and Applied Mathematics School of ScienceKunming University of Science and TechnologyKunming 650083China

We develop a numerical solution algorithm of the nonlinear potential flow equations with the nonlinear free surface boundary condition.A finite difference method with a predictor-corrector method is applied to solve the nonlinear potential flow equations in a two-dimensional (2D) *** irregular tank is mapped onto a fixed square domain with rectangular cells through a proper mapping function.A staggered mesh system is adopted in a 2D tank to capture the wave elevation of the transient *** finite difference method with a predictor-corrector scheme is applied to discretize the nonlinear dynamic boundary condition and nonlinear kinematic boundary *** present the numerical results of wave elevations from small to large amplitude waves with free oscillation motion,and the numerical solutions of wave elevation with horizontal excited *** beating period and the nonlinear phenomenon are very *** numerical solutions agree well with the analytical solutions and previously published results.

关键词： Predictor-corrector method Nonlinear potential flow equations Finite difference method Staggered grid Nested iterative method

Tuning magnetocaloric effect of Gd-Er-Al-Co metallic glass through crystallization

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Journal of Iron and Steel Research(International) 2018年第6期25卷 619-623页

作者： qiang luo Jun Shen School of Materials Science and Engineering TongjiUniversity Shanghai 201804 China

Magnetization and magnetocaloric effect （MCE） of as-cast Gd-based bulk metallic glass （BMG） Gd24Er32Co24A120 and the crystallized samples were investigated. Reentrant-spin-glass-like behavior was observed in the as-cast sample. With increasing degree of crystallization, the magnetic frustration increased, which could be seen from the increased divergence of the zero-field-cooled and field-cooled magnetization behavior （i.e., the spin-glass-like freezing behavior）. The Curie temperature and magnetization decreased after crystallization. The as-cast BMG showed a large maximum magnetic entropy change （- △Sm） of 9.9 （J kg^-1 K^-1） under a field change of 5 T, which was comparable with that of Gd metal and other Gd-based metallic glasses. The maximum - △Sm reduced to 6.7 （J kg^-l K^-1） after crystallization, which was still superior to the Fe-/Co-based amorphous alloys. Their good MCE combining with high electrical resistivity, outstanding mechanical properties, tunable nature, and sufficiently soft magnetic property makes them to be attractive candidate for magnetic refrigerants in the low-temperature range.

关键词： Metallic glass Magnetocaloric effect Spin glass Crystallization Microstructure