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基于ClO^(-)-HO_(2)-平衡机制的氯介导电催生^(1)O_(2)机理探究

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中国环境科学 2025年第1期45卷 167-174页

作者：孙浩然殷明明唐海亮王立章中国矿业大学环境与测绘学院江苏徐州221116

鉴于单线态氧(^(1)O_(2))氧化能力强、对环境友好等特点,进一步揭示电化学过程中氯介导产^(1)O_(2)的反应机理不仅能够提高废水处理效果,还可以减少活性氯带来的副作用.因此,采用电化学测试、罗丹明B(RhB)模拟废水处理等手段评估Ir-Ta/T... 详细信息

鉴于单线态氧(^(1)O_(2))氧化能力强、对环境友好等特点,进一步揭示电化学过程中氯介导产^(1)O_(2)的反应机理不仅能够提高废水处理效果,还可以减少活性氯带来的副作用.因此,采用电化学测试、罗丹明B(RhB)模拟废水处理等手段评估Ir-Ta/Ti和Pt/Ti电极的性能,并探讨不同条件(Cl^(-)浓度、电极析氯活性、外加H_(2)O_(2)、通入O_(2))对电化学产^(1)O_(2)的影响.结果表明,以^(1)O_(2)为主导的电化学体系能够去除超过96%的RhB且可缩短降解路径.高效生成^(1)O_(2)的基础是维持体系中产生的次氯酸根(ClO-)与过氧氢根(HO_(2)-)之间的平衡,任何一方过量都会抑制^(1)O_(2)的产生.本次研究以期为促进不同环境情况下^(1)O_(2)的生成和电极的定向制备与改性提供理论依据.

关键词：氯介导电化学产^(1)O_(2) RhB去除 ClO-—HO_(2)-平衡

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汽车灯具壳体加强筋的优化设计

塑料 2025年第1期54卷 95-99,107页

作者：胡桐铜蔡恒何景林唐海王超孙铁成重庆长安汽车股份有限公司重庆400020 湖北华中马瑞利汽车照明有限公司湖北孝感432100

基于常规受力工况建立汽车灯具有限元模型。为改善灯具壳体刚度性能并实现轻量化,从概念设计阶段到详细设计阶段,通过拓扑优化和尺寸优化对灯具壳体加强筋进行优化设计。在概念设计阶段,通过多个静态载荷模拟灯具在动态载荷下的变形趋势... 详细信息

基于常规受力工况建立汽车灯具有限元模型。为改善灯具壳体刚度性能并实现轻量化,从概念设计阶段到详细设计阶段,通过拓扑优化和尺寸优化对灯具壳体加强筋进行优化设计。在概念设计阶段,通过多个静态载荷模拟灯具在动态载荷下的变形趋势,以静态载荷下的灯具系统总柔度最小为目标,设计区域体积为约束,对灯具壳体加强筋进行拓扑优化设计。在拓扑优化的基础上,选取4个加强筋截面参数作为设计变量,结合修正的可扩展晶格序列法进行试验设计,构建了径向基函数(RBF)、最小二乘法模型的近似模型(LSR)。各参数在工程可行的约束下,以质量和灯具系统柔度最小为目标,采用全局优化算法(GRSM)进行求解,得到Pareto最优解。结果表明,在工程可行的前提下,优化后的灯具壳体加强筋质量下降了43.6%,危险点范式应力降低了8.6%,灯具壳体刚度性能在得到改善的同时,实现了材料轻量化。

关键词：灯具加强筋拓扑优化轻量化多目标优化

Constitutive relation of weakly anisotropic polycrystal with microstructure and initial stress

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Acta Mechanica Sinica 2007年第2期23卷 183-198页

作者： Mojia Huang Hua Zhan Xiuqiao Lin hai tang Institute of Engineering Mechanics Nanchang UniversityNanchang 330029 China

Man （Nondestr Test Eval 15：191-214, 1999） derived the constitutive relation of a weakly-textured orthorhombic aggregate of cubic crystallites with effects of microstructure and initial stress. In this paper, a computational expression on the integration ∫SO（3） Q^× D^1m0dg is given. Then, by means of the computational expression, the general constitutive relation of a weakly-textured anisotropic polycrystal with the consideration of microstructure and initial stress is derived. As special cases of our general constitutive relation, two constitutive relations are given for an isotropic polycrystal and a weakly-textured anisotropic aggregate of cubic crystallites. The acoustoelastic tensor of the reference cubic crystal is derived to determine the material constants of the polycrystal. Two examples are given for understanding the physical meaning of the texture coefficients and the constitutive relations.

关键词： Generalconstitutive relation of weakly-textured polycrystal .Microstructure Initial stress .Cubic crystallites

外来入侵海洋红藻——具孔斯帕林藻的早期发育、生活史及环境因子对其生长发育的影响

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水生生物学报 2025年第3期49卷 65-72页

作者：唐海梦赵露王昊林方鵾鹏王宏伟辽宁师范大学生命科学学院大连116081 辽宁师范大学辽宁省植物生物技术重点实验室大连116081

为了有效抑制该入侵种的生长,保护原生态系统的生态平衡,在实验室条件下对具孔斯帕林藻(Sparlin-giapertusa)的早期发育过程、生活史及环境因子对其生长发育的影响进行了详细的研究,结果表明:(1)具孔斯帕林藻的孢子发育类型为“直接盘... 详细信息

为了有效抑制该入侵种的生长,保护原生态系统的生态平衡,在实验室条件下对具孔斯帕林藻(Sparlin-giapertusa)的早期发育过程、生活史及环境因子对其生长发育的影响进行了详细的研究,结果表明:(1)具孔斯帕林藻的孢子发育类型为“直接盘状体”型,即孢子发育后不产生萌发管,而是分裂成细胞团,直接发育成盘状体。(2)生活史由单倍体的雌雄配子体、二倍体的果孢子体和四分孢子体组成,配子体与四分孢子体形态一致,为典型的同型世代交替。(3)温度、光照强度和盐度三种环境因子对具孔斯帕林藻的早期发育有显著影响,藻株生长的最适环境因子范围为温度8—14℃,光照强度60—100μmol photons/(m2·s),盐度20‰—40‰。此外,温度、光照强度和盐度的交互作用对藻株盘状体生长也有显著影响。具孔斯帕林藻盘状体早期发育的最适生长条件为温度11℃、光照强度80μmolphotons/(m2·s)和海水盐度30‰。研究结果阐明了具孔斯帕林藻的生活史,并明确了该藻的最适生长条件,为今后该入侵种的防治提供了理论基础。

关键词：早期发育生活史入侵物种具孔斯帕林藻

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气相色谱-质谱联用技术在新污染物筛查分析中的应用进展

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环境科技 2025年第1期38卷 63-67,73页

作者：尹程程栾海洋王海棠刘伟江苏省环境科学研究院江苏南京210036 江苏省徐州环境监测中心江苏徐州221018 生态环境部长江中下游水生态健康重点实验室江苏南京210036

近年来,国家高度重视新污染物治理工作,新污染物定性识别是实现其全生命周期管控的重要前提,气相色谱-质谱联用技术的发展为高通量筛查分析部分新污染物提供了有效的手段。通过综述气相色谱-质谱联用技术在水、气、土等多种环境介质的... 详细信息

近年来,国家高度重视新污染物治理工作,新污染物定性识别是实现其全生命周期管控的重要前提,气相色谱-质谱联用技术的发展为高通量筛查分析部分新污染物提供了有效的手段。通过综述气相色谱-质谱联用技术在水、气、土等多种环境介质的污染物鉴定和成分分析方面的研究进展,包括前处理方法及环境样品中新污染物组分定量分析、非靶向识别应用实例,提出目前的难点,探讨其发展趋势,为环境中新污染物的识别、环境保护及新污染物的治理提供了一定参考。

关键词：气相色谱-质谱新污染物定量非靶向筛查进展

Effects of Binding Energy of Bioinspired Sacrificial Bond on Mechanical Performance of cis-1,4-Polyisoprene with Dual-crosslink

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Chinese Journal of Polymer Science 2018年第9期36卷 1055-1062页

作者： Sheng Wang Zheng-hai tang Jing Huang Bao-Chun Guo Department of Polymer Materials and Engineering South China University of Technology

Although bioinspired sacrificial bonds have been demonstrated to be efficient in improving the mechanical properties of polymer materials, the effect of binding energy of a specific dynamic bond on the ultimate mechanical performance of a polymer network with dual-crosslink remains unclear. In this contribution, diamine and sulfur curing package are introduced simultaneously into a sulfonated cis-1,4-polyisoprene to create dually-crosslinked cis-1,4-polyisoprene network with sulfonate-aminium ionic bonds as the sacrificial bonds. Three diamines （primary, secondary and tertiary） with the same spacer between the two nitrogen atoms are used to create the ionic bonds with different binding energies. Although the binding energy of ionic bond does not affect the glass transition temperature of cis-1,4-polyisoprene （IR）, it exerts definite influences on strain-induced crystallization and mechanical performance. The capabilities of diamine in dissipating energy, promoting strain-induced crystallization and enhancing the mechanical performance are in the same order of secondary diamine 〉 primary diamine 〉 tertiary diamine. The variations in mechanical performances are correlated to the binding energy of the ionic bond, which is determined by pKa values.

关键词： cis-1,4-Polyisoprene Ionic bond Sacrificial bond Binding energy Strain-induced crystallization

Cortical bone trajectory fixation in cemented vertebrae in lumbar degenerative disease:A case report

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World Journal of Clinical Cases 2021年第28期9卷 8609-8615页

作者： Meng-Meng Chen Pu Jia hai tang Department of Orthopaedics Beijing Friendship HospitalCapital Medical UniversityBeijing 100050China

BACKGROUND Percutaneous vertebroplasty(PVP)has been widely used in osteoporotic vertebral compression fracture(OVCF).Following surgery,the bone cement would be positioned ***,in some cases of lumbar degenerative disease,the cemented vertebrae needs to be fixed after decompression and fusion *** is difficult to implant traditional pedicle screws into the cemented vertebrae because of the bone cement *** present,the main treatment strategy is to skip the cemented vertebra and conduct a long segment *** article presents a cortical bone trajectory(CBT)fixation technique for cemented *** SUMMARY PVP involving the L3 and L4 was performed in an 82-year-old man due to *** the surgery,bone cement leakage occurred,resulting in compression of the root of the right L3 *** performed a partial facetectomy to retrieve the leaked bone cement and to relieve the patient’s neurological *** 3 mo,the patient developed lumbar disc herniation in L3/4,potentially due to instability caused by the previous ***,it was necessary to perform intervertebral fusion and *** was difficult to implant traditional trajectory pedicle screws in L3 and L4 because of the bone cement ***,we implanted CBT screws in the L3 and L4 *** a result,the patient’s symptoms resolved and he reported satisfaction with the surgery at follow-up after 8 *** It is feasible to utilize CBT in cemented vertebrae for the treatment of lumbar degenerative disease.

关键词： Cortical bone trajectory Cemented vertebrae Lumbar degenerative disease Spinal fixation Bone cement leakage Case report

Effect of roller shapes on strip buckling in a continuous annealing furnace

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International Journal of Minerals,Metallurgy and Materials 2011年第3期18卷 297-302页

作者： Jing Yang Di tang Lan Su hai-tao Jiang Quan Yang National Engineering Research Center of Advanced Rolling University of Science and Technology Beijing Beijing 100083 China

The effect of roller shapes on strip buckling in a continuous annealing furnace was focused on. The tensile stress distribution, the transverse compressive stress, and the critical buckling stress of the strip were studied by the finite element method （FEM） when the flat roller, crown roller, single taper roller, and double taper roller were used, respectively. Simulation results show that strip buckling is most likely to occur with the crown roller, then the double taper roller, and finally the single taper roller. Also, strip buckling can not occur when the flat roller is used. Considering strip snaking, the single taper roller and double taper roller are suggested in the continuous annealing fur-nace. The double taper roller with a better strip snaking-prevention ability should be applied in the sections with high strip temperature, and the single taper roller with a better buckling-prevention ability should be used in the sections with low strip temperature.

关键词： steel strips buckling heat treating furnaces annealing rollers finite element method

Future directions for research on tissue-engineered trachea

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Bio-Design and Manufacturing 2022年第3期5卷 627-632页

作者： hai tang Weiyan Sun Yi Chen Yunlang She Chang Chen Department of Thoracic Surgery Shanghai Pulmonary HospitalTongji University School of MedicineShanghai 200433China Shanghai Engineering Research Center of Lung Transplantation Shanghai 200433China

As the only way for air to enter the lungs,the trachea plays an indispensable role in conducting,cleaning,and humidifying ***,trauma,and congenital disease of the trachea are serious threats to patients[1].Local tracheal disease can be treated with a balloon or stent,but for extensive tracheal disease,tracheal reconstruction after surgical resection is the only treatment[2–4].However,the tension of the anastomotic site also increases with expansion of the resection range,which causes a series of complications,such as poor anastomotic healing,anastomotic fistulae,and tracheal rupture,and even life-threatening complications in severe cases[5].

关键词： balloon healing congenital