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Effects of biofertilizer and water-saving irrigation interactions on the leaf photosynthesis and plant growth of tomatoes

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International Journal of Agricultural and Biological Engineering 2024年第2期17卷 177-185页

作者： Danyan Chen Yuchun Ai Peizhe li Yue Dong Hailing li Changyi Wang Xiaorui Jiang shilong li Yan Shen Aijun Dai Yuanyuan Feng College of Horticulture Jinling Institute of TechnologyNanjing 210038China Co-Innovation Center for Sustainable Forestry in Southern China College of Forestry and GrasslandCollege of Soil and Water ConservationNanjing Forestry UniversityNanjing 210037China Institute of Agricultural Resources and Environment Jiangsu Academy of Agricultural SciencesNanjing 210014China Agriculture Exchange and Cooperation Center of Shandong Province Jinan 250100China Murdoch Applied Innovation Nanotechnology Research Group College of ScienceHealthEngineering and EducationMurdoch UniversityPerthWA 5150Australia

Irrigation and fertilizer interaction is an efficient cultivation management strategy for facility ***,the effects of irrigation and fertilizer management on tomato growth and its physiological factors remain *** this study,two irrigation patterns(W1,conventional irrigation;W2,water-saving irrigation)and four fertilizer application patterns(CF,chemical fertilizer;BOF,biological organic fertilizer;NPK,nutrient compound fertilizer;BOF+NPK)were selected to observe the effects of their interaction on cherry tomato plant growth,leaf photosynthesis and fruit quality through pot *** results showed that W2 treatments promoted plant height growth compared to W1 under the same fertilizer ***,irrigation and fertilizer management had significant effects on net photosynthetic rate,intercellular oxidation concentration,stomatal conductance and transpiration rate at the first sequence flowering and fruiting *** maximum tomato plant height(99.0 cm)was achieved under the irrigation and fertilizer pattern of BOF and W2,along with the highest fruit yield of 1.98 kg/plant,which was approximately 31.1%higher than the minimum yield under the combined CF and W2 *** W2 treatments,the application of either NPK or BOF increased the soluble sugar content of *** structural equation models showed that the soil alkali hydrolyzed nitrogen could directly significantly affect the yield and soluble *** findings suggest that optimization of irrigation-fertilizer interactions positively regulates tomato growth,providing an efficient model for tomato irrigation and fertilizer management and a reference for sustainable development of facility agriculture.

关键词： irrigation-fertilization interaction cherry tomato plant height leaf photosynthesis fruit yield and quality

Dual-mode high-voltage sawtooth wave buncher for low-energy ion injection at HIRFL-SFC cyclotron

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Radiation Detection Technology and Methods 2024年第2期8卷 1187-1192页

作者： Ruifeng Zhang Zhe Xu Xianwu Wang Yan Cong shilong li Xiaodong Han Xueming Su Institute of Modern Physics Chinese Academy of SciencesLanzhou730000China University of Chinese Academy of Sciences Beijing100049China

Background Sawtooth wave buncher is widely used in low-energy ion injection at cyclotron *** performance significantly impacts on the intensity of ion beam delivered to experimental *** order to meet the high-intensity requirement of physical experiments,we upgrade the existing B02 buncher in the axial injection line of the SFC with the dual-model sawtooth wave buncher for low-energy ion *** We use a three harmonics synthesis method in the dual-sawtooth wave ***,we use three harmonics to generate a low-level sawtooth ***,the low-level wave is amplified by a broadband amplifier to generate high voltage at a single-gap ***,the electrode is matched to the amplifier by a 1:9 transmission line *** The new buncher has been installed online since September *** tested results show that the buncher is capable of being operated at the full-frequency mode and half-frequency mode with the corresponding frequency ranging from 2.75 to 8.0 MHz and 5.5 to 16.0 MHz,*** effective voltage can be up to 2.54 kV and 1.6 kV,***,the sawtooth wave buncher works reliably,and a 4.5-8.6 times gain in the beam intensity is *** By using the three-harmonic synthesis method,a new dual-mode high-voltage sawtooth wave buncher has been *** sawtooth wave buncher has succeeded in being applied with the high buncher voltage over a wide frequency range with good reliability and *** newly-built sawtooth wave buncher significantly increases the ion beam current for low-energy ion injection at the HIRFL-SFC cyclotron.

关键词： Sawtooth wave multi-harmonic Single-gap electrode Impedance transformer

Strain effect on intersubband transitions in rolled-up quantum well infrared photodetectors

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Journal of Semiconductors 2017年第5期38卷 73-77页

作者： Han Wang shilong li Honglou Zhen Xiaofei Nie Gaoshan Huang Yongfeng Mei Wei Lu National Laboratory for Infrared Physics Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai 200083 China University of Chinese Academy of Sciences Beijing 100049 China Department of Materials Science Fudan University Shanghai 200433 China

Pre-strained nanomembranes with four embedded quantum wells（QWs） are rolled up into threedimensional（3D） tubular QW infrared photodetectors（QWIPs）,which are based on the QW intersubband transition（ISBT）.A redshift of ～0.42 meV in photocurrent response spectra is observed and attributed to two strain contributions due to the rolling of the pre-strained *** is the overall strain that mainly leads to a redshift of ～0.5 meV,and the other is the strain gradient which results in a very tiny *** blue shift of the photocurrent response spectra with the external bias are also observed as quantum-confined Stark effect（QCSE）in the ISBT.

关键词： quantum well infrared photodetector rolled-up microtube strain Stark effect

Large optical nonlinearity enabled by coupled metallic quantum wells

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light(Science & Applications) 2019年第1期8卷 1069-1075页

作者： Haoliang Qian shilong li Ching-Fu Chen Su-Wen Hsu Steven Edward Bopp Qian Ma Andrea R.Tao Zhaowei liu Department of Electrical and Computer Engineering University of CaliforniaSan Diego9500 Gilman DriveLa JollaCA 92093USA Department of NanoEngineering University of CaliforniaSan Diego9500 Gilman DriveLa JollaCA 92093USA Materials Science and Engineering University of CaliforniaSan Diego9500 Gilman DriveLa JollaCA 92093USA Center for Memory and Recording Research University of CaliforniaSan Diego9500 Gilman DriveLa JollaCA 92093USA

New materials that exhibit strong second-order optical nonlinearities at a desired operational frequency are of paramount importance for nonlinear *** second-order susceptibility χ^((2)) has been obtained in semiconductor quantum wells(QWs).Unfortunately,the limited confining potential in semiconductor QWs causes formidable challenges in scaling such a scheme to the visible/near-infrared(NIR)frequencies for more vital nonlinear-optic ***,we introduce a metal/dielectric heterostructured platform,i.e.,TiN/Al_(2)O_(3) epitaxial multilayers,to overcome that *** platform has an extremely high χ^((2)) of approximately 1500 pm/V at NIR *** combining the aforementioned heterostructure with the large electric field enhancement afforded by a nanostructured metasurface,the power efficiency of second harmonic generation(SHG)achieved 10^(−4) at an incident pulse intensity of 10 GW/cm^(2),which is an improvement of several orders of magnitude compared to that of previous demonstrations from nonlinear surfaces at similar *** proposed quantum-engineered heterostructures enable efficient wave mixing at visible/NIR frequencies into ultracompact nonlinear optical devices.

关键词： quantum nonlinear visible

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旋筛式碾米机传动系统的故障分析

农业机械学报 2006年第5期37卷 93-95页

作者：李诗龙武汉工业学院机械工程系

针对旋筛式碾米机筛筒的机械传动系统故障,对旋筛式碾米机的力能传输规律进行分析表明,旋筛式碾米机空载与负载时的力能传输路线完全不同。筛筒的机械传动系统设计必须以米筛的摩擦转矩为依据,并要考虑碾米机闷车时的严重情况。通过实... 详细信息

针对旋筛式碾米机筛筒的机械传动系统故障,对旋筛式碾米机的力能传输规律进行分析表明,旋筛式碾米机空载与负载时的力能传输路线完全不同。筛筒的机械传动系统设计必须以米筛的摩擦转矩为依据,并要考虑碾米机闷车时的严重情况。通过实例分析进行了验证。

关键词：碾米机旋筛传动系统故障诊断

Structural characterization of thin-walled microbubble cavities

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Photonics Research 2023年第8期11卷 I0021-I0027页

作者： MOHAMMED ZIA JALALUDEEN shilong li KE TIAN TOSHIO SASAKI SÍLE NIC CHORMAIC light-Matter Interactions for Quantum Technologies Unit Okinawa Institute of Science and Technology Graduate UniversityOnnaOkinawa 904-0495Japan College of Physics and Optoelectronic Engineering Harbin Engineering UniversityHarbin 150001China Scientific Imaging Section Okinawa Institute of Science and Technology Graduate UniversityOnnaOkinawa 904-0495Japan

Whispering gallery mode(WGM)microbubble cavities are a versatile optofluidic sensing platform owing to their hollow core *** increase the light–matter interaction and,thereby,achieve higher sensitivity,thinwalled microbubbles are ***,a lack of knowledge about the precise geometry of hollow microbubbles prevents us from having an accurate theoretical model to describe the WGMs and their response to external *** this work,we provide a complete characterization of the wall structure of a microbubble and propose a theoretical model for the WGMs in this thin-walled microcavity based on the optical waveguide *** characterization of the wavelength-scale wall is enabled by focused ion beam milling and scanning electron microscopy *** proposed theoretical model is verified by finite element method *** approach can readily be extended to other low-dimensional micro-/nanophotonic structures.

关键词： waveguide characterization bubble

Effects of urea-N and CO_(2) coupling fertilization on the growth,photosynthesis,yield and anthocyanin content of hydroponic purple cabbage Brassica campestris ***

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International Journal of Agricultural and Biological Engineering 2023年第5期16卷 123-131页

作者： Danyan Chen Yuanyuan Feng Ya liu Juan Hu shilong li Jingze Ma Xinyu Lu Xiaorui Jiang Shuhui Sun Zhi Yang Changyi Wang College of Horticulture Jinling Institute of TechnologyNanjing 210038China Co-Innovation Center for Sustainable Forestry in Southern China College of ForestryNanjing Forestry UniversityNanjing 210037China School of Software Engineering Jinling Institute of TechnologyNanjing 211169China Powerchina Zhongnan Engineering Co. LtdChangsha 410014China College of Agricultural Science and Engineering Hohai UniversityNanjing 210098China China Coal Technology Engineering Group Nanjing Design and Research Institute Co.Ltd Nanjing 210014China

Water and fertilizer coupling is a high-efficiency technology for the development of facility ***,the interaction effect of nitrogen(N)and air carbon dioxide(CO_(2))on hydroponic purple cabbage,especially on its leaf anthocyanins under hydroponic solution systems,remains *** this study,six treatments were set as C0N0,C0N2,C0N4,C1N0,C1N2 and C1N4,with N0,N2 and N4 being 0.0 g/L,0.2 g/L and 0.4 g/L exogenous urea-N to hydroponic solution dilution,respectively.C0 and C1 were set as with and without CO_(2)fertilizer(i.e.,800 g CO_(2)agent added one week after transplanting and 600 g CO_(2)agent added when the plant reached 15 cm in height),*** experiments were conducted to investigate the interaction effect of N and air CO_(2)(N×CO_(2))on the growth,photosynthesis,yield and anthocyanin content of hydroponic purple cabbage Brassica campestris *** results showed N×CO_(2)extremely significantly influenced plant height(H),net photosynthetic rate(Pn),stomatal conductance(Gs),intercellular oxidation concentration(Ci),transpiration rate(Tr),leaf water use efficiency(LWUE)and *** C1N0 treatment had the largest yield at 262.5 g/plant,with higher values for root length,root weight,plant height and leaf number than the other *** Pn,Ci and Tr of C1N4 were the highest at 3.05μmol CO_(2)/m2·s,352.8μmol CO_(2)/m2·s and 2.31 mmol H2O/m2·s,*** C1N2 treatment received the largest Gs value of 0.70 mol H2O/m2·s and the largest Tr of 2.31 mmol H2O/m2·*** was the highest LWUE for C0N2(1.41)and the highest anthocyanin content for C1N2(1.35 mg/kg).There was a significant negative correlation between leaf number and anthocyanin(r=-0.414,plizer and 0.2 g/L exogenous urea-N to hydroponic solution dilution is a potential N×CO_(2)coupling strategy to increase anthocyanin and the yield of purple cabbage.

关键词： nitrogen concentration carbon dioxide purple cabbage hydroponic solution anthocyanins

Research Progress of Medicinal Secondary Metabolites and Gene Cloning of Dendrobium officinale

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Medicinal Plant 2019年第3期10卷 16-18,23页

作者： Ye liANG Caihua ZOU Jindu li shilong li Tianzi li Affiliated Hospital of Youjiang Medical University for Nationalities Baise533000China Affiliated Cancer Hospital of Guangxi Medical University Nanning530021China Guangxi Genliao Biological Technology Co. Ltd.Baise533000China

Dendrobium officinale is one of the most precious medicinal plants in China. Its main medicinal ingredients are its secondary metabolites. However,it has the characteristics of limited sources,low active ingredient content and high cost,limiting the use of D. *** the network structure and rate-limiting steps of secondary metabolites of medicinal components of D. officinale,analyzing the secondary metabolic synthesis process,mastering the production rules of its medicinal components and carrying out gene cloning or biosynthesis,*** of great significance for the rational development and utilization of D. officinale resources. This paper briefly reviews the progress of the research on the secondary metabolites of D. officinale,including the detection and identification of metabolites and the identification and cloning of key metabolic enzymes.

关键词： Dendrobium officinale Secondary metabolites Medicinal resources Gene cloning

Research on Transformer Partial Discharge Localization Based on Residual Neural Network Model

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Research on Transformer Partial Discharge Localization Based...