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Numerical Investigation on the Harbour Resonance Inside A Harbour with Lateral Cavities

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China Ocean Engineering 2024年第5期38卷 838-844页

作者： YU Yue-min huang xiao-hua School of Marine Science and Engineering Hainan UniversityHaikou 570228China Key Laboratory for Sustainable Utilization of Open-Sea Fishery Ministry of Agriculture and Rural AffairsGuangzhou 510300China South China Sea Fisheries Research Institute Chinese Academy of Fishery SciencesGuangzhou 510300China

Wave-induced harbour resonance is numerically investigated inside a harbour with lateral *** theoretical solutions for the amplification parameter are compared with the simulated results under varying dimensionless wave numbers in order to verify the simulation model in a rectangular harbour at a constant *** results indicate that the numerical model can correctly calculate the natural frequency and the natural wave height.A range of calculations are performed for harbour resonance with one pair of lateral cavities,two pairs of lateral cavities and three pairs of lateral cavities,*** simulated results indicate that the amplitude of the amplification parameter decreases both at the primary natural oscillation and the secondary natural oscillation,as the number of lateral cavities *** dimensionless wave number reduces as the number of lateral cavities increases both at the primary natural oscillation and the secondary natural oscillation as well.

关键词： harbour resonance lateral cavity numerical simulation amplification parameter

Effects of lanthanum(Ⅲ) on nitrogen metabolism of soybean seedlings under elevated UV-B radiation

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Journal of Environmental Sciences 2007年第11期19卷 1361-1366页

作者： CAO Rui huang xiao-hua ZHOU Qing CHENG xiao-ying The Key Laboratory of Industrial Biotechnology Ministry of Education Southern Yangtze University Wuxi 214036 China College of Chemistry and Environment Science Nanjing Normal University Nanjing 210097 China

The hydroponic culture experiments of soybean bean seedlings were conducted to investigate the effect of lanthanum （La） on nitrogen metabolism under two different levels of elevated UV-B radiation （UV-B, 280-320 nm）. The whole process of nitrogen metabolism involves uptake and transport of nitrate, nitrate assimilation, ammonium assimilation, amino acid biosynthesis, and protein synthesis. Compared with the control, UV-B radiation with the intensity of low level 0.15 W/m^2 and high level 0.45 W/m^2 significantly affected the whole nitrogen metabolism in soybean seedlings （p 〈 0.05）. It restricted uptake and transport of NO3^-, inhibited activity of some key nitrogen-metabolism-related enzymes, such as： nitrate reductase （NR） to the nitrate reduction, glutamine systhetase （GS） and glutamine synthase （GOGAT） to the ammonia assimilation, while it increased the content of free amino acids and decreased that of soluble protein as well. The damage effect of high level of UV-B radiation on nitrogen metabolism was greater than that of low level. And UV-B radiation promoted the activity of the anti-adversity enzyme glutamate dehydrogenase （GDH）, which reduced the toxicity of excess ammonia in plant. After pretreatment with the optimum concentration of La （20 mg/L）, La could increase the activity of NR, GS, GOGAT, and GDH, and ammonia assimilation, but decrease nitrate and ammonia accumulation. In conclusion, La could relieve the damage effect of UV-B radiation on plant by regulating nitrogen metabolism process, and its alleviating effect under low level was better than that under the high one.

关键词： lanthanum(Ⅲ) UV-B radiation soybean seedlings nitrogen metabolism alleviating effect

Effect of cerium on photosynthetic characteristics of soybean seedling exposed to supplementary ultraviolet-B radiation

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Journal of Environmental Sciences 2006年第6期18卷 1147-1151页

作者： LIANG Chan-juan huang xiao-hua ZHOU Qing The Key Laboratory of Industrial Biotechnology Ministry of Education Southern Yangtze University Wuxi 214036 China School of Biotechnology Southern Yangtze University Wuxi 214036 China College of Chemistry and Environmental Science Nanjing Normal University Nanjing 210097 China

Effects of cerium （Ce^3＋） on photosynthetic characteristics were investigated by hydroponics under laboratory conditions when soybean seedlings were exposed to two levels of supplementary UV-B radiation. UV-B radiation badly inhibited the photosynthesis in soybean seedling, leading to a reduction in net photosynthetic rate （Pn）, Hill reaction activity, light saturated photosynthetic rate （Ps） and apparent quanta yield （AQY）, as well as the CO2 and light saturated photosynthetic rate （Pro） and carboxulation efficiency （CE）. On the contrary, Ce obviously promoted the photosynthesis of plants by increasing Hill reaction activity, accelerating electron transport and photophosphorylation, and enhancing carboxylation efficiency. For Ce＋UV-B treatments, the values of photosynthetic parameters were still lower than those of the control, but obviously higher than those of UV-B treatment. The results indicated that Ce alleviated the inhibition of UV-B radiation on the photosynthesis in soybean seedling to a certain extent. In correlating of Pn with Hill activity, AQY and CE, we found that the changes of photosynthetic rate were mainly influenced by the regulating effect of Ce on Hill activity and AQY at low level （0.15 W/m^2） of UV-B radiation, but were dominated by the regulating effect of Ce on CE at high level （0.45 W/m^2）. Thus, Ce could regulate many aspects in photosynthesis of soybean seedling under UV-B stress. The regulating mechanism was close related with the dosage of UV-B radiation.

关键词： apparent quanta yield carboxylation efficiency Glycine max Hill activity rare earths UV-B radiation

Responses of antioxidant enzyme and photosynthesis in rape seedling to the combined stresses of acid rain and ultraviolet-B radiation

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Journal of Environmental Sciences 2005年第6期17卷 1038-1041页

作者： LIANG Chan-juan huang xiao-hua TAO Wen-yi ZHOU Qing The Key Laboratory of Industrial Biotechnology Ministry of Education Southern Yangtze University Wuxi 214036 China College of Chemistry and Environmental Science Nanjing Normal University Nanjing 210097 China School of Biotechnology Southern Yangtze University Wuxi 214036 China

Effects of the simulated acid rain（AR） and ultraviolet-B（UV-B, 280-320 nm） radiation with a single or two ways simultaneously （AR ＋ UV-B） on the antioxidant enzyme and photosynthesis of the rape seedlings were investigated by the hydroponic culture. The results of static experiment indicated that the tolerance of rape seedling to single stress（AR or UV-B） is stronger than that to dual stresses（AR ＋ UV-B）. Furthermore, the dual stresses had additive effect on catalase activity, and a synergistic effect on MDA content, net photosynthesis rate, water use efficiency as well as intercellular CO2 concentration. Meanwhile, it has an independent effect on chlorophyll content, stomatal conductance, and transpiration rate as well as membrane permeability. During 64 h restoration course, the dynamic change in the curves of physiological and biochemical indices were not identical, and none of them show a simple linear variation. According to the static and dynamic experiments, it was found that a responsive sequence of catalase activity, membrane permeability, MDA content and photosynthetic characteristics to the above-mentioned stresses was as follows： AR ＋ UV-B 〉 UV-B 〉 AR.

关键词： combined stresses elevated UV-B radiation simulated acid rain rape seedling CAT activity photosynthesis

Effects of cerium on growth and physiological mechanism in plants under enhanced ultraviolet-B radiation

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Journal of Environmental Sciences 2006年第1期18卷 125-129页

作者： LIANG Chan-iuan huang xiao-hua TAO Wen-yi ZHOU Qing The Key Laboratory of Industrial Biotechnology Ministry of Education Southern Yangtze University Wuxi 214036 China School of Biotechnology Southern Yangtze University Wuxi 214036 China College of Chemistry and Environmental Science Nanjing Normal University Nanjing 210097 China

Effect of cerium （Ce^3＋） on the growth, photosynthesis and antioxidant enzyme system in rape seedlings （Brassica juncea L.） exposed to two levels of UV-B radiation （T1： 0.15 W/m^2 and T2：0.35 W/m^2） was studied by hydroponics under laboratory conditions. After 5 d of UV-B treatment, the aboveground growth indices were obviously decreased by 13.2%-44. 1%（T1） and 21.4%-49.3% （T2）, compared to CK, and except active absorption area of roots, the belowground indices by 14.1%-35.6%（T1） and 20.3%-42.6% （T2）. For Ce＋UV-B treatments, the aboveground and belowground growth indices were decreased respectively by 4.1%-23.6%, 5.2% -23.3%（Ce＋T1） and 10.8%-28.4%, 7.0%-27.8%（Ce＋T2）, lower than those of UV-B treatments. The decrease of growth indices appeared to be the result of changes of physiological processes. Two levels of UV-B radiation induced the decrease in chlorophyll content, net photosynthesis rate, transpiration rate, stomatal conductance and water use efficiency by 11.2%-25.9%（T1） and 20.9%- 56.9%（T2）, whereas increase in membrane permeability and activities of antioxidant enzymes including superoxide dismutase（SOD）, catalase （CAT） and peroxidase （POD） by 6.9%, 22.8%, 21.5%, 9.5%（T1） and 36.6%, 122.3%, 103.5%, 208.9%（T2）, respectively. The reduction of the photosynthetic parameters in Ce＋UV-B treatments was lessened to 3.2%-13.8%（Ce＋T1） and 4.9%-27.6%（Ce＋T2）, and the increase of membrane permeability and activities of antioxidant enzymes except POD in the same treatments were lessened to 2.4%, 8.4%, 6.6%（Ce＋T1） and 30.1%, 116.7%, 75.4%（Ce＋T2）. These results indicate that the regulative effect of Ce on photosynthesis and antioxidant enzymatic function is the ecophysiological basis of alleviating the suppression of UV-B radiation on growth of seedlings. Furthermore, the protective effect of Ce on seedlings exposed to TI level of UV-B radiation is superior to T2 level.

关键词： cerium(Ce^3+) UV-B radiation rape growth photosynthesis antioxidant enzyme system

高分子材料与工程专业“生产实习”实践课程思政教学体系初探

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教育教学论坛 2025年第06期 117-120页

作者：陈硕平黄孝华李裕琪桂林理工大学材料科学与工程学院

“生产实习”等实践课程是高校思政教育体系的一个重要环节。在近几年的“生产实习”教学中，深入发掘实习课程对知行转化的验证作用，并选择具有革命历史的区内外实习地点，结合红色资源作为思政教育的生动教材。通过优化实习大纲和指... 详细信息

“生产实习”等实践课程是高校思政教育体系的一个重要环节。在近几年的“生产实习”教学中，深入发掘实习课程对知行转化的验证作用，并选择具有革命历史的区内外实习地点，结合红色资源作为思政教育的生动教材。通过优化实习大纲和指导书，在多个教学环节中融入思政内容；通过校内指导教师和企业导师紧密配合，有效对学生开展思想理论、政治信仰和道德品格的实践转化；以及利用实习课余时间精心组织相关活动，潜移默化地进行思政教育，从而初步形成了特色生产实习实践思政教学体系。

关键词：生产实习课程思政教学体系

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广东省捐赠换书中心述略

图书馆论坛 2017年第4期37卷 122-128页

作者：黄小华广东省立中山图书馆

为盘活民间闲置图书资源和开展精准文化扶贫,广东省立中山图书馆创办广东省捐赠换书中心,取得突出的社会效益。文章概述广东省捐赠换书中心的运营和核心服务,总结和分析广东省捐赠换书中心的发展经验。

关键词：广东省捐赠换书中心图书捐赠图书交换文化扶贫

维度·向度·强度:小说修辞认同机制的基本构架

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湖北大学学报（哲学社会科学版） 2021年第4期48卷 39-47,176页

作者：黄晓华湖北大学文学院湖北武汉430062

小说故事层的人物之间、叙事层的叙述者与受述者之间、叙述层的隐含作者与隐含读者之间存在着复杂的认同关系,小说修辞的认同机制由此构成一个复杂的动态系统。综合考察小说修辞的多重主体间性,深入把握小说修辞认同机制的基本构架,可... 详细信息

小说故事层的人物之间、叙事层的叙述者与受述者之间、叙述层的隐含作者与隐含读者之间存在着复杂的认同关系,小说修辞的认同机制由此构成一个复杂的动态系统。综合考察小说修辞的多重主体间性,深入把握小说修辞认同机制的基本构架,可以建构一种有效的小说评价体系。通过认同维度可以深入理解人物主体、叙述主体、创作主体的精神结构,考察小说修辞主体建构的完善程度;通过认同向度可以清楚辨识外在型权威、内在型权威及个人型权威主导的不同认同方式,评估小说修辞交流过程的协调程度;通过认同强度可以明确衡量认知维度的冲击力、审美维度的感染力、伦理维度的同化力的不同强度,把握小说修辞功能发挥的有效程度。统筹考量小说修辞认同机制的维度、向度与强度,宏观上有助于更准确地把握小说修辞的内在机理,推进小说修辞理论的深化与发展;微观上可以更切实地指导文本细读,建构一种新的小说批评方法。

关键词：小说修辞认同机制主体间性文本细读小说批评

话语分配与身体调控——论解放区文学中的性话语

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湖北大学学报（哲学社会科学版） 2009年第1期36卷 95-99页

作者：黄晓华湖北大学文学院湖北武汉430062

话语的生产与分配是社会对身体进行调控的一种重要手段,在性话语方面尤其如此。在解放区文学的性问题上,革命话语、启蒙话语以及民间话语之间呈现出错综复杂的关系。无疑,解放区的启蒙话语在革命话语的支持下,对民间话语中的贞洁观念构... 详细信息

话语的生产与分配是社会对身体进行调控的一种重要手段,在性话语方面尤其如此。在解放区文学的性问题上,革命话语、启蒙话语以及民间话语之间呈现出错综复杂的关系。无疑,解放区的启蒙话语在革命话语的支持下,对民间话语中的贞洁观念构成了一定程度的解构。然而,这种启蒙话语却可能因为与革命的要求相冲突而被否定。正是在革命要求的"圣洁"面前,民间话语中贞洁观念通过"革命"的幌子得以还魂,性因此也被逐渐排除在革命话语之外。通过消解启蒙话语、驯化民间话语,解放区的革命话语建构了一套符合自己利益的性话语生产与分配方式,从而实现了对身体的规训与调控。

关键词：解放区文学性话语身体调控