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Science China life Sciences 2025年

作者： yanlong li Yinuo Fu Yaoyao li Rui Zhang Jing Yang Huanhuan Ma ling Min Xianlong Zhang National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural University

High temperature (HT) stress causes male sterility,leading to reduced upland cotton ***,we identified a key gene,Casein Kinase I (GhCKI),that negatively regulates male fertility in upland cotton under ***,conventional genetic manipulations of GhCKI would result in male sterility,hindering its utilization in breeding ***,we engineered quantitative variation for anther thermotolerance-related traits in upland cotton by creating weak promoter alleles of GhCKI genes,using CRISPR/Cas9 and CRISPR/Cpf1genome ***,we screened and identified two new upland cotton plant lines exhibiting a HT-tolerant phenotype with edited GhCKI promoters,and characterized their corresponding heat-tolerant allelic *** research revealed that the primary reason for the HT tolerance of the GhCKI promoter editing mutants is that the trans-acting factors GhMYB73 and GhMYB4,which positively regulate GhCKI expression under HT,failed to bind and activate the expression of ***,our study not only provides a rapid strategy to generate new beneficial alleles but also offers novel germplasm resources and molecular insights for crop HT tolerance breeding.

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Comprehensive analysis of pyrolysis in medical rubber gloves:pyrolysis characteristics,kinetics,thermodynamics,volatile products,and pathways

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Waste Disposal and Sustainable Energy 2024年第3期6卷 297-308页

作者： Xianbo Qu yanlong li Xiaojuan Zhang Rundong li Key Laboratory of Clean Energy in liaoning College of Energy and EnvironmentShenyang Aerospace UniversityShenyang110136China

The surge in medical waste,fueled by the impact of COVID-19 and the influenza A virus,poses substantial challenges to waste ***,pyrolysis technology introduces a novel approach to the treatment of medical *** study investigated the pyrolytic characteristics,kinetics,thermodynamic parameters,volatile gases,and pyrolytic pathways of medical rubber gloves(MRGs)in a N2 atmosphere utilizing Thermal Gravimetric Analyzer(TGA),Thermogravimetric-Fourier transform infrared spectroscopy(TG-FTIR)and Pyrolysis gas chrogams-mass spectrometry(Py-GC/MS)*** of MRG predominantly occurs between 284-501℃ and 613-701℃.The initial stage is the primary reaction phase,exhibiting an average activation energy of 339.77 kJ/mol,following the reaction order model(Fn).The second pyrolysis stage has an average activation energy of 236.93 kJ/mol and adheres to the geometric contraction model(Rn).The volatile products from MRG pyrolysis primarily comprise olefins,alkanes,and aromatic *** olefins consist primarily of 1,2-pentadiene and D-limonene,while the alkanes include cyclopropane,cyclohexane,and 1,*** compounds are chiefly benzene,toluene,and xylene.

关键词： Medical rubber gloves Pyrolysis Kinetics Reaction mechanism

Speciation evolutions of target metals （Cd, Pb） influenced by chlorine and sulfur during sewage sludge incineration

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Frontiers of Environmental Science & Engineering 2014年第6期8卷 871-876页

作者： Jingde LUAN Rundong li Zhihui ZHANG yanlong li Yun ZHAO Key Laboratory of Clean Energy (liaoning Province) College of Energy and Environment Shenyang Aerospace University Shenyang 110136 China

In sludge incineration, the thermal behavior of heavy metal is a growing concern. In this work, the combined analysis of metal partitioning behavior between vapor phase and condensed phase, speciation redistribu- tion in condensed phase and the difference of metal species in binding energy was carried out to investigate the possible volatilization-condensation mechanism of heavy metals in high-temperature sludge incineration. It was found that there were two steps in metal volatilization. The initial volatilization of heavy metal originated from their exchangeable （EXC）, carbonate bound （CAR） and iron- manganese bound （FM） fractions, which is primarily composed of simple substance, chlorides, oxides and sulfides. With the increase of chlorine and sulfur in sludge, the inner speciation redistribution of heavy metals occurred in condensed phase, which was an important factor affecting the potential volatility of heavy metals. A partial of metal species with complexed （COM） and residual （RES） fractions gradually decomposed into simple substance or ions, oxides and carbonates, which signifi- cantly strengthened the second volatility. In presence of chlorine, about 46% of Cd with the RES fraction disappeared when the volatility rate of Cd increased by 44.89%. Moreover, about 9% of Pb with COM fraction disappeared when there was an increase of nearly 10% in the volatilization rate. Thus, the second volatilization was mainly controlled by the decomposition of metal species with COM and RES fractions. By virtue of XRD analysis and the binding energy calculation, it was found that metal complex and silicates were inclined to decompose under high temperature due to poor thermo stability as compared with sulfates.

关键词： sludge incineration heavy metals inner speciation redistribution binding energy

Indoor and outdoor particle concentration distributions of a typical meeting room during haze and clear-sky days

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Science China(Technological Sciences) 2017年第3期60卷 355-362页

作者： li yanlong JIN XinMing YANG liJun DU XiaoZe YANG YongPing Key Laboratory of Condition Monitoring and Control for Power Plant Equipments of Ministry of Education School of Energy Power and Mechanical Engineering North China Electric Power University Beijing 102206 China

Air quality has increasingly been a great concern all over the world,and the good command of indoor and outdoor air qualities is of

关键词： indoor and outdoor environment particle concentration mass concentration PM2.5 in-situ measurement

Undrained shear strength evaluation for hydrate-bearing sediment overlying strata in the Shenhu area, northern South China Sea

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Acta Oceanologica Sinica 2019年第3期38卷 114-123页

作者： yanlong li Gaowei Hu Nengyou Wu Changling liu Qiang Chen Chen'an li Key Laboratory of Gas Hydrate Ministry of Natural Resources Laboratory for Marine Mineral Resource Pilot National Laboratory for Marine Science and Technology (Qingdao) Qingdao Institute of Marine Geology China Geological Survey College of Information and Control Engineering China University of Petroleum

The undrained shear strength of shallow strata is a critical parameter for safety design in deep-water *** situ piezocone penetration tests(CPTU) and laboratory experiments are performed at Site W18-19 in the Shenhu area, northern South China Sea, where China's first marine hydrate exploitation operation is due to be located. The validation of the undrained shear strength prediction model based on CPTU parameters. Different laboratory tests, including pocket penetrometer, torvane, miniature vane and unconsolidated undrained triaxial tests, are employed to solve empirical cone coefficients by statistical and mathematical methods. Finally, an optimized model is proposed to describe the longitudinal distribution of undrained shear strength in calcareous clay strata in the Shenhu area. Research results reveal that average empirical cone coefficients based on total cone resistance, effective resistance, and excess-pore pressure are 13.8, 4.2 and 14.4, respectively. The undrained shear strength prediction model shows a good fit with the laboratory results only within specific intervals based on their compaction degree and gas-bearing conditions. The optimized prediction model in piecewise function format can be used to describe the longitudinal distribution of the undrained shear strength for calcareous clay within all depth intervals from the mud-line to the upper boundary of hydrate-bearing sediments(HBS). The optimized prediction result indicates that the effective cone resistance model is suitable for very soft to firm calcareous clays,the excess-pore pressure model can depict the undrained shear strength for firm to very stiff but gas-free clays,while the total cone resistance model is advantageous for evaluating the undrained shear strength for very stiff and gassy clays. The optimized model in piecewise function format can considerably improve the adaptability of empirical models for calcareous clay in the Shenhu area. These results are significant for sa

关键词： piezocone penetration test hydrate exploitation test undrained shear strength calcareous clay Shenhu area South China Sea

Transportation characteristics of motor vehicle pollutants near Beijing typical expressway

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Science China(Technological Sciences) 2016年第3期59卷 468-475页

作者： li yanlong ZHANG DaiChao JIN XinMing YANG liJun DU XiaoZe YANG YongPing Key Laboratory of Condition Monitoring and Control for Power Plant Equipments of Ministry of Education School of Energy Power and Mechanical Engineering North China Electric Power University

As a major source of air pollution in urban areas, the motor vehicle exhaust has attracted more and more attention due to its growing amount and serious harm to human health. It is of benefit to the pollutant control to make clear the transportation characteristics of vehicle exhausts. In this paper, the transportation characteristics of vehicle exhaust pollutants are investigated by means of the on-site measurement based on a typical Beijing expressway-Badaling expressway （G6 state expressway）. The concentrations of CO, NOx, S02 and particles near the expressway were obtained, by which the variations of the particle num- ber and mass concentrations, as well as the gas pollutant volume concentrations in the vicinity of the roadways with the dis- tance from the expressway were fitted. The results show that the gas pollutant concentrations and particle concentrations de- crease almost exponentially with the distance from the expressway, which is helpful for the air pollutant database establish- ment and future pollution control in big cities.

关键词： particular matter gas pollutant concentration distribution transportation characteristics

Formation and growth mechanisms of ultrafine particles in sludge-incineration flue gas

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Waste Disposal and Sustainable Energy 2019年第2期1卷 143-150页

作者： yanlong li Jiaqi Man Zhengquan Fang Yunbin Zhao Feng Wang Rundong li Key Laboratory of Clean Energy College of Energy and EnvironmentShenyang Aerospace UniversityNo.37 Daoyi South AvenueDaoyi Development DistrictShenyang 110136LiaoningPeople’s Republic of China

Atmospheric particulate matter with diameter<2.5μm now makes up much of the air pollution in China,but it is the ultrafine particles(UFPs)with diameter<90 nm that are of particular *** is because UFPs are strongly li... 详细信息

Atmospheric particulate matter with diameterlinked with human health for two reasons:they contain a variety of hazardous substances and they can deeply penetrate human respiratory ***,scanning electron microscopy combined with X-ray dispersive energy spectrometry was used to characterize the morphology and surface texture,as well as the elemental composition of 60 *** UFPs was generated in a sewage sludge-incineration power plant in Zhejiang *** was done to determine the microstructure of the ultrafine particles and to follow the evolution of particle surface elemental composition with increasing particle ***,a comparison of the characteristic time for nucleation,condensation and coagulation was done to estimate the dominant *** results show that the UFPs have generally irregular shapes(cotton-like,irregular balls,sheets,etc.)and that they usually aggregate to form a *** increase in the size of a UFP,the mass fraction of the elements presents clearly changed:Na,K and Fe gradually decreased;while Ca,Si and Al,as well as the heavy metals Cu,Zn and Ni *** time estimation is a convenient and effective tool for identifying the predominant mechanisms during *** this study,calculations of characteristic time were used to reveal a mechanism of vaporization,nucleation,condensation and coagulation,which drives the formation and growth of ultrafine particles.

关键词： Ultrafine particle Characteristic time Nucleation Condensation Coagulation

Two Types of Granites in the Western Yangtze Block and Their Implications for Regional Tectonic Evolution： Constraints from Geochemistry and Isotopic Data

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Acta Geologica Sinica(English Edition) 2018年第1期92卷 89-105页

作者： MABI Awei YANG Zhengxi ZHANG Mingchun WEN Dengkui li yanlong liU Xuyang School of Earth Sciences Chengdu University of Technology Chengdu 610059 Sichuan China Panxi Team Sichuan Bureau of Geology and Mineral Resources Xiehang 615000 Sichuan China Department of Geological Sciences The University of Texas at E1 Paso E1 Paso 79968 Texas USA

In the western Yangtze Block, widespread Mesoproterozoic to Neoproterozoic rocks are the key to understanding the Precambrian tectonic-magmatic evolution of the region. However, their petrogenesis and tectonic setting are still controversial. In this paper, zircon U-Pb ages, Sm-Nd isotopic and whole-rock geochemical data are reported from selected fresh samples in the southern Dechang county, southwestern China, in order to constrain their emplacement age and magma source, as well as their petrogenesis and tectonic setting. They are mainly composed of biotite monzogranite, monzonitic granite, biotite granodiorites, and quartz diorite. Two ages of 1055 ± 43 Ma and 837.6 ± 3.8 Ma were obtained through zircon U-Pb dating by LA-ICP-MS and LA-MC-ICP-MS, respectively. According to their major element compositions, the Grenville-age granites are peraluminous calc-alkaline series calcic S-type granite. In contrast, the mid-Neoproterozoic granites are metaluminous calc-aikaline series alkalic I-type granite. Furthermore, the S-type granites are enriched in LREEs relative to HREEs with （La/Yb）N ratios of 3.85-18.56 and underwent major fractionation with strongly negative Eu anomalies （Eu/Eu＊ = 0.38-0.66）. In the MORB-normalized trace element variation diagram, all the samples are enriched in Ce and large ion lithophile elements such as Rb, Th, and K, and depleted in high field strength elements such as Nb, and Ti, with negative Sr and Ti anomalies. The I-type granites are enriched in LREEs with slight negative Eu anomalies （Eu/Eu＊= 0.83-0.93）. They are characterized by the enrichment of highly incompatible elements （such as K, Rb, Ba, Th） and LREEs, relative to MORB. Neodymium isotopic data show that the S-type granites display 143Nd/144Nd values of 0.51241-0.51256, and have eNa （t = 1055 Ma） values of （-3.29） to （-3.81）. Calculated tDM ages yield values from 1.87 to 1.91 Ga with the tDM.2stg ages of 1.86 to 1.9 Ga. The I-type granites have 143Nd/144Nd ratios between 0.51192

关键词： 1-type granite S-type granite geochemistry petrogenesis tectonic setting Western YangtzeBlock

Operation optimization of plugged screen cleanup by rotary water jetting

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Petroleum Science 2014年第1期11卷 122-130页

作者： Dong Changyin li yanlong Long Jiajia Zhang Qinghua Wang Dengqing Wu Jianping College of Petroleum Engineering China University of Petroleum Qingdao Research Institute of Production Technology Shengli Oilfield SINOPEC

The rotary water jetting is one of the most important techniques for horizontal well *** jet flow is used to remove plugging particles from sand control screens to recover their ***,the operation optimization of this technique depends mainly on experience due to absence of applicable evaluation and design models for removing plugging *** paper presents an experimental setup to simulate the cleanup process of plugged screens by rotary water jetting on the surface and to evaluate the performance of a jetting *** real plugged screens pulled from damaged wells,a series of tests were performed,and the qualitative relationships between the cleanup efficiency and various operational parameters,such as the type of fluids used,flow rate,mode of tool movement,etc.,were *** test results indicated that the cleanup performance was much better when the rotary jetting tool moved and stopped periodically for a certain time than that when it reciprocated at a constant *** be exact,it was desirable for the rotary jetting tool to move for 1.5-2 m and stop for 2-4 min,which was called the ＂move-stop-move＂ *** cleanup performance could be obtained at high flow rates,and the flow rate was recommended to be no lower than 550-600 L/*** test results also indicated that complex mud acid was better than clean water in terms of cleanup *** cleanup efficiency and high screen permeability recovery could be achieved for severely plugged *** jetting is preferred for the cleanup of horizontal wells with severely plugged screens,and the screen permeability recovery ratio may reach 20％ if optimized operation parameters were used.

关键词： Sand control screen cleanup performance rotary jetting operation optimization experimental simulation

Chemically robust carbon nanotube-PTFE superhydrophobic thin films with enhanced ability of wear resistance

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Progress in Natural Science:Materials International 2017年第3期27卷 396-399页

作者： Kewei Wang Pan Xiong Xiuping Xu Kan Wang yanlong li Yufeng Zheng State Nuclear Electric Power Planning Design & Research Institute College of Engineering Peking University

A chemically robust superhydrophobic nanocomposite thin film with enhanced wear resistance is prepared from a composite comprising polytetrafluoroethylene（PTFE） and carbon *** superhydrophobic thin films with hierarchical structure are fabricated by spraying an environmentally friendly aqueous dispersion containing carbon nanotubes and PTFE resin on silicon *** films with a contact angle of 154.1°± 2° and a sliding angle less than 2° remain superhydrophobic after abrading over 500 times under a pressure of 50 g/cm;.The thin film is also extremely stable even under much stress *** further the understanding of the enhancement of wear resistance,we investigated the formation of microsized structure and their *** growth of microbumps is caused by attracting solution droplet to the hydrophilic islands on hydrophobic surface.

关键词： Superhydrophobicity Thin film Carbon nanotube Wear resistance