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生态模式下庆元县林木栽植与病虫害绿色防控技术浅析

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南方农业 2023年第17期17卷 287-289页

作者：周生财瞿思民吴大瑜吴仁超苏光浪占小艳丽水职业技术学院浙江丽水323000 庆元县实验林场浙江庆元323800 庆元县自然资源和规划局浙江庆元323800

为充分发挥浙江省丽水市庆元县生态林的经济、社会、环境效益,以庆元县林业资源为研究对象,探讨了引入现代化栽培技术与病虫害精准防控技术的必要性,从林木幼苗的科学培育、林木移栽与移栽后管理等方面分析了生态模式下林业栽植技术要点... 详细信息

为充分发挥浙江省丽水市庆元县生态林的经济、社会、环境效益,以庆元县林业资源为研究对象,探讨了引入现代化栽培技术与病虫害精准防控技术的必要性,从林木幼苗的科学培育、林木移栽与移栽后管理等方面分析了生态模式下林业栽植技术要点,并介绍了病虫害绿色防治措施,完善了生态模式下林木科学栽培的现代化方案。

关键词：生态林种苗培育病虫害防治浙江省丽水市庆元县

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基于金相大赛的材料专业人才创新实践能力培养的探索与实践

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创新创业理论研究与实践 2024年第13期7卷 172-174页

作者：吴多利李大玉刘澄张超扬州大学机械工程学院江苏扬州225127

为拓展创新人才培养新模式,智能制造装备国家级现代产业学院借助金相技能大赛竞赛平台,探索了提升专业人才培养质量的新途径。该文以扬州大学机械工程学院组织材料专业学生参加全国大学生金相技能大赛为例,分析了学生对专业的学习热情... 详细信息

为拓展创新人才培养新模式,智能制造装备国家级现代产业学院借助金相技能大赛竞赛平台,探索了提升专业人才培养质量的新途径。该文以扬州大学机械工程学院组织材料专业学生参加全国大学生金相技能大赛为例,分析了学生对专业的学习热情、创新实践能力、团队竞争意识和综合素质等方面的变化。通过竞赛拓展专业人才培养渠道,改革课程实践教学,使学生加强对专业的认知与理解,培养学生持之以恒的作风,是提升专业人才创新实践能力的良好范式。

关键词：金相大赛材料专业人才培养课程改革团队意识创新实践能力

北淮阳东段铅锌矿床镉的赋存状态及其富集特征研究

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合肥工业大学学报（自然科学版） 2024年第9期47卷 1213-1223页

作者：吴小荣张达玉白茹玉姜重任张飞万秋合肥工业大学资源与环境工程学院安徽合肥230009 安徽省地质矿产勘查局安徽合肥230001 安徽省地质调查院安徽合肥230001

文章利用电子探针分析手段,对北淮阳东段典型铅锌矿床中Cd的赋存状态和富集特征进行了分析研究。结果表明,北淮阳东段铅锌矿床中分散元素Cd主要赋存在闪锌矿中,少量赋存于方铅矿、黄铁矿等硫化物矿物,且闪锌矿中的Cd质量分数与Zn质量分... 详细信息

文章利用电子探针分析手段,对北淮阳东段典型铅锌矿床中Cd的赋存状态和富集特征进行了分析研究。结果表明,北淮阳东段铅锌矿床中分散元素Cd主要赋存在闪锌矿中,少量赋存于方铅矿、黄铁矿等硫化物矿物,且闪锌矿中的Cd质量分数与Zn质量分数成反比关系,表明Cd是以类质同象方式置换Zn而进入闪锌矿晶格中。北淮阳东段典型铅锌矿床中不同颜色闪锌矿与Cd质量分数的关系研究显示,Cd富集与闪锌矿颜色无明显关系。研究发现北淮阳东段铅锌矿床中闪锌矿Cd质量分数的富集程度从大到小依次为隐爆角砾岩型(汞洞冲)、矽卡岩型(银水寺)、热液交代充填型(银冲)。

关键词：铅锌矿床 Cd 赋存状态富集规律北淮阳东段

毛竹覆盖—套种竹荪轮作模式经济效益和生态修复评价

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南方林业科学 2016年第3期44卷 40-43,48页

作者：吴应齐吴大瑜王明月应国华陈天勤瞿华成庆元县林业局浙江庆元323800 丽水市森林植物检疫站浙江丽水323000 丽水市林业科学研究院浙江丽水323000

在花年毛竹纯林进行1 a覆盖-1 a套种竹荪轮作等经营模式试验,研究毛竹林覆盖后套种竹荪轮作模式经济效益和生态修复作用。结果表明:(1)1 a覆盖-1 a套种竹荪轮作模式的2 a净收入达到18.0万元/hm^2,投入产出比达到1∶3.29,分别是传统单一... 详细信息

在花年毛竹纯林进行1 a覆盖-1 a套种竹荪轮作等经营模式试验,研究毛竹林覆盖后套种竹荪轮作模式经济效益和生态修复作用。结果表明:(1)1 a覆盖-1 a套种竹荪轮作模式的2 a净收入达到18.0万元/hm^2,投入产出比达到1∶3.29,分别是传统单一经营模式、1 a覆盖-1 a自然培育经营模式的19.6倍和1.6倍。(2)毛竹林覆盖后套种竹荪轮作模式在高碳氮比(C/N)有机物覆盖的清理、林地土壤改良、林地地力培育等生态修复效果明显优于1 a覆盖-1 a自然培育经营模式,有效防止竹林地因覆盖而引发竹林衰退。毛竹林覆盖与套种竹荪轮作模式是毛竹林可持续性发展的经营模式,可作为毛竹林覆盖的配套经营措施在生产上推广应用。

关键词：竹林覆盖套种竹荪轮作模式经济效益生态修复

In-situ synthesis of high thermal stability and salt resistance carbon dots for injection pressure reduction and enhanced oil recovery

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Nano Research 2023年第10期16卷 12058-12065页

作者： Yining wu Lisha Tang dayu Liu Demin Kong Liu Kai Mengjiao Cao Qingshan Zhao School of Petroleum Engineering China University of Petroleum(East China)Qingdao 266580China State Key Laboratory of Heavy Oil Processing College of Chemistry and Chemical EngineeringChina University of Petroleum(East China)Qingdao 266580China

Carbon dots(CDs)show great potential as a new type of oil-displacing agent for unconventional oil and gas ***,the instability and easy aggregation epitomize the challenges that accompany the application of CDs in high temperature and high salinity(HT/HS)*** this research,novel benzene sulfonate-modified carbon dots(BS-CDs)with remarkable thermal stability and salt resistance were fabricated through an in-situ electrochemical exfoliation *** simulation verifies that the introduction of benzene sulfonate groups substantially strengthens the electrostatic repulsion between BS-CDs,leading to outstanding dispersibility and stability even at a temperature of 100℃ and salinity of 14×10^(4) mg/*** flooding tests show that 0.05 wt.%BS-CDs nanofluid can significantly reduce the water injection pressure by 50.00%and enhanced oil recovery(EOR)to 68.39%under HT/HS *** to the atomic force microscopy(AFM)scanning results,the adhesion force between the core(after BS-CDs treatment)and oil decreased by 11.94 times,indicating that the hydrophilicity of the core surface was *** addition,the distribution of the adhesion force curve is more concentrated,which means that the micro-scale wettability of the core changes from oil-wet to more homogeneous *** study provides a feasible way for the development and application of good thermal stability and salt resistance CDs in unconventional reservoir development.

关键词： carbon dots in-situ modification thermal stability and salt resistance injection pressure reduction enhanced oil recovery

Effects of NO_(2) and SO_(2) on the secondary organic aerosol formation fromβ-pinene photooxidation

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Journal of Environmental Sciences 2024年第2期136卷 151-160页

作者： Xiangyu Zang Zhaoyan Zhang Yingqi Zhao Gang Li Hua Xie Weiqing Zhang Guorong wu Xueming Yang Ling Jiang Zhang dayu School of Chemistry Dalian University of TechnologyDalian 116024China State Key Laboratory of Molecular Reaction Dynamics Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China University of Chinese Academy of Sciences Beijing 100049China Department of Chemistry School of ScienceSouthern University of Science and TechnologyShenzhen 518055China

Elucidating the effects of anthropogenic pollutants on the photooxidation of biogenic volatile organic compounds is crucial to understanding the fundamental mechanisms of secondary organic aerosol(SOA)***,the impacts of NO_(2)and SO_(2)on SOA formation from the photooxidation of a representative monoterpene,β-pinene,were investigated by a number of laboratory *** results indicated NO_(2)enhanced the SOA mass concentrations and particle number concentrations under both low and highβ-pinene *** could be rationalized that the increased O_(3)concentrations upon the NO_(x)photolysis was helpful for the generation of more amounts of O_(3)-oxidized products,which accelerated the SOA nucleation and *** with NO_(2),the promotion of the SOA yield by SO_(2)was mainly reflected in the increase of mass concentration,which might be due to the elimination of the newly formed particles by the initially formed *** observed low oxidation degree of SOA might be attributed to the fast growth of SOA,resulting in the uptake of less oxygenated gas-phase species onto the particle *** present findings have important implications for SOA formation affected by anthropogenic–biogenic interactions in the ambient atmosphere.

关键词： Secondary organic aerosol Volatile organic compound Anthropogenic pollutant Beta-pinene Photooxidation

DIC imaging for identification of motor and sensory nerves

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Journal of Innovative Optical Health Sciences 2016年第5期9卷 1-7页

作者： dayu Chen Yuxiang wu Tao Sui Shaoqun Zeng Xiaojian Cao Xiaohua Lv Department of Neurosurgery wuhan General Hospital of Guangzhou Military Command of PLA 627 wuluo Road Wuhan 430070P.R.China Britton Chance Center for Biomedical Photonics wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology wuhan 430074 P.R.China School of Physical Education Jianghan University Wuhan 430056P.R.China First A±liated Hospital of Nanjing Medical University Nanjing 210029 P.R.China

Identification of motor and sensory nerves is important in applications such as nerve injury *** practice relies on time consuming staining methods for this ***,we use laser scanning infrared diferential interference contrast(IR-DIC)microscopy for label-free observation of the two types of *** and dorsal nerve roots of adult beagle dogs were collected and sections of different thicknesses were imaged with an IR-DIC *** texture patterns of the IR-DIC images of the motor and sensory nerve can be distinguished when the section thickness increases to 40 *** suggests that nerve fibers in motor and sensory nerves have different distribution *** result hints a potential new way for more rapid identification of nerve type in peripheral nerve repair surgery.

关键词： Differential interference microscopy nerve repair nerve root image pattern.

基于Box-Behnken响应面法优化水蜜桃绿原酸提取工艺及其抗氧化特性分析

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食品科技 2024年第2期49卷 220-228页

作者：郭明遗邓艳曾传涛罗晶晶刘达玉吴华昌四川旅游学院食品学院四川成都610100 成都大学肉类加工四川省重点实验室四川成都610106 四川旅游学院烹饪科学四川省高等学校重点实验室四川成都610100

为探究超声辅助双水相法提取水蜜桃果肉和果核中的绿原酸的工艺条件,考察聚乙二醇分子质量、盐种类、超声温度、超声时间、超声功率对提取率的影响,以绿原酸提取量为指标,应用Box-Behnken设计进行响应面分析优化最佳提取工艺条件,并研... 详细信息

为探究超声辅助双水相法提取水蜜桃果肉和果核中的绿原酸的工艺条件,考察聚乙二醇分子质量、盐种类、超声温度、超声时间、超声功率对提取率的影响,以绿原酸提取量为指标,应用Box-Behnken设计进行响应面分析优化最佳提取工艺条件,并研究绿原酸提取物的抗氧化活性。结果表明,果肉和果核绿原酸最佳提取工艺参数为:聚乙二醇分子质量为600,无机盐组分为(NH_(4))_(2)SO_(4),超声温度为40℃,超声时间为32.5 min/32.0 min,超声功率为300 W/290 W,在此条件下,水蜜桃果肉和果核绿原酸的提取率分别为123.05 mg/kg FW和91.83 mg/kg FW。抗氧化能力测试表明,在绿原酸提取物浓度为200μg/mL时,水蜜桃果肉和果核绿原酸提取物对1,1-二苯基-2-三硝基苯肼(1,1-Diphenyl-2-picrylhydrazyl,DPPH)自由基、羟基自由基、超氧阴离子自由基和2,2-联氨-双-3-乙基苯并噻唑啉-6-磺酸(2,2’-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid),ABTS)阳离子自由基的清除率分别可达到68.63%和64.75%、63.18%和56.34%、70.65%和63.98%、68.19%和59.98%。对半抑制浓度(IC_(50))进行测定得出,果肉和果核绿原酸提取物对DPPH自由基抗氧化能力优于另外3种自由基,为130.19μg/mL和135.46μg/mL。研究结果表明,超声辅助双水相法可以有效提取水蜜桃果肉和果核中的绿原酸,所提取的水蜜桃绿原酸具有良好的抗氧化活性,并具有潜在的深度开发应用价值。

关键词：超声辅助双水相水蜜桃绿原酸抗氧化活性清除率

Preparation of Ag3PO4/AgBr Hybrids Using a Facile Grinding Method and Their Applications as Photocatalysts

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Chemical Research in Chinese Universities 2018年第4期34卷 649-654页

作者： ZHANG Xiaojun YAN Keqiang SONG Yu WANG Zhe wu Jialong YU dayu Sci-Tech Center for Clean Conversion and High-valued Utilization of Biomass Northeast Electric Power University Jilin 132012 R R. China

Highly efficient visible-light-induced Ag3PO4/AgBr hybrids were prepared via a facile and effective grinding method. The synthetic route was simply achieved through the grinding of Ag3PO4 with NaBr in an agate mortar at room temperature. During the grinding process, the mechanochemical effect induced the solid-state reaction of Ag3PO4 and NaBr to form AgBr nanoparticles on the surface of the Ag3PO4 particles. After calcination and washing, Ag3POdAgBr hybrids were obtained. The AgBr shells prevented photocorrosion and improved the structural stability in water. Interestingly, the compositions, morphologies and optical absorption properties of the Ag3PO4/AgBr hybrids could be fmely controlled by adjusting the NaBr content and grinding time. The photocatalytic activities of the as-prepared samples were investigated in terms of the degradation of rhodamine B（RhB） under visible light irradiation. The photocatalytic activities of the Ag3POn/AgBr hybrids were much improved compared to those of of Ag3PO4 or AgBr individually. Under visible light irradiation for 1 h, the Ag3PO4/AgBr hybrids exhibited a 66.8%-76.8% increase in photocatalytic efficiency compared to pure Ag3PO4.

关键词： Ag3PO4 AgBr Photocatalytic activity Grinding method