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δ13C-δ18O Covariance:An Effective Indicator of Hydrological Closure for Lakes?

Acta Geologica Sinica(English Edition) 2008年第5期82卷 975-981页

作者： CHEN Jing＇an WANG Fushun WAN Guojiang tang degui David Dian ZHANG HUNAG Ronggui LI Jian XIAO tangfu State Key Laboratory of Environmental Geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang550002 Guizhou Department of Geography University of Hong Kong Pokfulam Road Hong Kong

The correlation between the δ^13C and δ^13C-δ^18O in primary carbonates is affected by several factors such as hydrological balance, total CO2 concentrations, climatic condition and lake productivity. The influence of these factors on the δ^13C-δ^18O correlation may be different on different time scales. In this paper, two different-type lakes in southwestern China, Lake Erhai and Lake Chenghai, are selected to investigate the influence of climatic pattern on the δ^13C-δ^18O correlation and to evaluate the reliability of the δ^13C-δ^18O covariance as an indicator of hydrological closure. The results show that there exists good correlation between the δ^13C and δ^18O in Lake Erhai （overflowing open lake） and in Lake Chenghai （closed lake）. This suggests that the δ^13C-δ^18O covariance may be not an effective indicator of hydrological closure for lakes, especially on short time scales. On the one hand, a hydrologically open lake may display covariant δ^13C and δ^18O as a result of climatic influence. The particular alternate warm-dry and cold-wet climatic pattern in southwestern China may be the principal cause of the δ^13C-δ^18O covariance in Lake Erhai and Lake Chenghai. On the other hand, a hydrologically closed lake unnecessarily displays covariant trends between δ^13C and δ^18O because of the buffering effect of high CO2 concentration on the δ^13C shift in hyper-alkaline lakes. We should be prudent when we use the covariance between δ^13C and δ^18O to judge the hydrological closure of lake.

关键词： carbonates δ^13C-δ^18O covariance hydrological closure climatic pattern

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High resolution environmental records in recent sediments of Erhai Lake, Yunnan Province

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Chinese Science Bulletin 1999年第S2期44卷 88-90页

作者： CHEN Jingan, WAN Guojiang and tang degui State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China State Key Laboratory of Environmental Geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang 550002 China

IN the past half a century, the global paleoclimate has been successfully reconstructed by natural recordssuch as ice core, loess and deep-sea sediments. However, these works mostly focused on long-timescale climatic changes. Along with the appearance of modern environmental problems including globalwarming, people are increasingly concerned about short-term climatic variations (annual to century scale)within the historical period. Therefore, it is an urgent and significant task for scientists to obtain continuous and high resolution natural records so as to reconstruct recent climatic changes truly and predict theclimate in the near future. As a main lodging of surface substances, the plateau-lake sediment continuously records the information of regional climate and environment with annual to decade resolution. Undoubtedly it is one

关键词： lake sediments high resolution climatic changes Erhai Lake.

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浅谈综合装饰中的色釉利用

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陶瓷研究 2005年第2期20卷 38-39页

作者：唐德贵

综合装饰是以二种或二种以上的装饰手法运用到同一件作品上，使之产生新的艺术效果，如，青花斗彩，色釉刻花，釉里红斗彩，色釉堆花，高温色釉斗彩等。其特点是变化灵活，丰富多彩，其手法相互补充并以崭新的形式熟练的技巧和灿烂夺目... 详细信息

综合装饰是以二种或二种以上的装饰手法运用到同一件作品上，使之产生新的艺术效果，如，青花斗彩，色釉刻花，釉里红斗彩，色釉堆花，高温色釉斗彩等。其特点是变化灵活，丰富多彩，其手法相互补充并以崭新的形式熟练的技巧和灿烂夺目的色彩展示出艺术陶瓷装饰的广阔前景。

关键词：综合装饰色釉利用艺术效果陶瓷艺术装饰形式题材材质

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Copy number variation of NAL23 causes narrow-leaf development in rice

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Journal of Genetics and Genomics 2024年第8期51卷 880-883页

作者： degui Zhou Yajing Li Xianrong Xie Wenyan Ding Libin Chen Tie Li Jianian tang Xiyu Tan Weizhi Liu Yueqin Heng Yongyao Xie Letian Chen Qi Liu Shaochuan Zhou Jing Zhao Gong Zhang Jiantao Tan Yaoguang Liu Rongxin Shen State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources Guangdong Laboratory for Lingnan Modern AgricultureCollege of Life SciencesSouth China Agricultural UniversityGuangzhouGuangdong 510642China Guangdong Key Laboratory of New Technology in Rice Breeding Rice Research InstituteGuangdong Academy of Agricultural SciencesGuangzhouGuangdong 510640China Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes and MOE Key Laboratory of Tumor Molecular Biology Institute of Life and Health EngineeringJinan UniversityGuangzhouGuangdong 510632China

Leaf shape is a key trait for plant architecture relating to photosynthesis and transpiration in plants(Lawson et al.,2020).Erect leaves with proper leaf length and width,particularly the upper three leaves in cereal crops,could significantly improve light absorption efficiency in canopy and ultimately increase crop yield(Jiao et al.,2010).Rice leaves initiate at the peripheral zone of shoot apical meristem,then develop along the proximal-distal,adaxial-abaxial,and mediallateral axes to form a flat symmetric architecture(Du et al.,2018).

关键词： crops cereal narrow

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Creep anisotropy behavior,deformation mechanism,and its efficient suppression method in Inconel 625 superalloy

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Journal of Materials Science & Technology 2023年第2期133卷 58-76页

作者： Xudong Liu Jiangkun Fan Kai Cao Fulong Chen Ruihao Yuan degui Liu Bin tang Hongchao Kou Jinshan Li State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi’an 710072China Innovation Center NPU·ChongqingChongqing 401135China AVIC Manufacturing Technology Institute Beijing 100024China

Mill products,such as sheets,usually show obvious anisotropy in their mechanical properties,which greatly affects both their applications and *** this study,the orientation-dependent tensile and creep behaviors of Inconel 625 alloy sheets with weak local textures were systematically investigated at 650°*** results showed that Inconel 625 superalloy exhibits nearly isotropic tensile properties;how-ever,obvious creep anisotropy appears when loading along different *** life in the rolling direction(150±5 h)was approximately 4.5 times longer than in the transverse direction(33±1 h).Se-vere creep anisotropy was found to be determined by two aspects:(i)the change in deformation mecha-nisms along the rolling direction(a combination of boundary sliding,dislocation slipping,and twinning)and the transverse direction(dislocation slipping).Stronger impingement of slip bands on grain bound-aries accelerated intergranular crack initiation and propagation during loading along the transverse direc-tion,which resulted in a short creep life.(ii)The differences in strain compatibility at grain boundaries(i.e.,creep loading along the transverse direction resulted in the initial grains forming strong Brass,Cu,and S textures).Creep cracks preferentially nucleated at the junctions between Cu/Brass texture grains,as these interfaces exhibit the worst strain compatibility(Luster-Morris parameter m≤0.22).Furthermore,pre-stress aging(PSA)treatment is proposed as an efficient method to suppress creep *** discrepancy rate of creep life was found to be reduced by nearly 50%after PSA treatment.

关键词： Nickel superalloys Creep anisotropy Deformation mechanisms Texture Pre-stress aging

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OsLTP47 may function in a lipid transfer relay essential for pollen wall development in rice

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Journal of Genetics and Genomics 2022年第5期49卷 481-491页

作者： Libin Chen Chonghui Ji degui Zhou Xin Gou Jianian tang Yongjie Jiang Jingluan Han Yao-Guang Liu Letian Chen Yongyao Xie State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources College of Life SciencesSouth China Agricultural UniversityGuangzhouGuangdong 510642China Guangdong Laboratory for Lingnan Modern Agriculture GuangzhouGuangdong 510642China Guangdong Key Laboratory of New Technology in Rice Breeding Rice Research InstituteGuangdong Academy of Agricultural SciencesGuangzhouGuangdong 510640China Present address:Vector-borne Virus Research Center Fujian Province Key Laboratory of Plant VirologyFujian Agriculture and Forestry UniversityFuzhouFujian 350002China.

In plants,lipid transfer proteins(LTPs)transport pollen wall constituents from the tapetum to the exine,a process essential for pollen wall ***,the functional cooperation of different LTPs in pollen wall development is not well *** this study,we have identified and characterized a grassspecific LTP gene,Os LTP47,an important regulator of pollen wall formation in rice(Oryza sativa).Os LTP47 encodes a membrane-localized LTP and in vitro lipid-binding assays confirms that Os LTP47 has lipidbinding *** of Os LTP47 causes disordered lipid metabolism and defective pollen walls,leading to male *** two-hybrid and pull-down assays reveal that Os LTP47 physically interacts with another LTP,Os *** findings suggest that the plasma membrane-localized Os LTP47 may function as a mediator in a lipid transfer relay through association with cytosolic and/or locular Os C6 for pollen wall development and that various LTPs may function in a coordinated manner to transport lipid molecules during pollen wall development.

关键词： Rice Pollen wall Lipid transfer protein Male sterility

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基于“脑-心-肾-精室”轴探讨早泄的病机及治疗

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江西中医药 2024年第1期55卷 30-33页

作者：高大伟唐博谢成俞旭君李富豪李广森常德贵成都中医药大学附属医院代谢性疾病中医药调控四川省重点实验室成都610075 成都中医药大学成都611137 成都中医药大学附属生殖妇幼医院成都610042

基于“脑-心-肾-精室”轴阐述中医对早泄病机的认识及治疗思路,并从现代医学的视角探讨早泄的神经生理学机制与“脑-心-肾-精室”轴的内在联系,以此丰富“脑-心-肾-精室”轴关于早泄病机及治疗的内涵。

关键词：早泄 “脑-心-肾-精室”轴神经生理学中医病机中医治疗

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Breeding Effects and Genetic Compositions of a Backbone Parent (Fengbazhan) of Modern indica Rice in China

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Rice science 2022年第5期29卷 397-401,I0001-I0011页

作者： ZHAO Lei ZHOU Shaochuan WANG Chongrong LI Hong HUANG Daoqiang WANG Zhidong ZHOU degui CHEN Yibo GONG Rong PAN Yangyang Rice Research Institute Guangdong Academy of Agricultural SciencesGuangdong Laboratory for Lingnan Modern AgricultureGuangdong key Laboratory of New Technology in Rice Breeding/Guangdong Rice Engineering LaboratoryGuangzhou 510640China

Fengbazhan(FBZ)and its derived varieties have been widely cultivated in China,accounting for 22%of China’s paddy ***,evaluating the *** of FBZ and elucidating its genetic compositions are effective strategies for interpreting the history of modern rice *** integrative bioinformatics analysis and population validation,we found that the expression of favorable genes on chromosome 6 was important for the breeding of FBZ-derived varieties and these favorable genes were gradually optimized during the breeding process,which was consistent with the conjecture of the‘Rice Core Germplasm Breeding Theory’.For several decades,tremendous efforts have been made by Chinese scientists in rice breeding to improve grain yield,nutritional quality and environmental performance,thereby achieving substantial progress in global food *** rice breeding technologies have been developed,including semi-dwarf breeding,utilization of heterosis,launching the‘Super Rice Project’,development of green super rice and molecular design breeding(Qian et al,2016;Bai et al,2018;tang and Cheng,2018;Yu et al,2022).In southern China,rice can be divided into the early,middle and late rice,and the cultivation area in southern China accounts for approximately 80%of China’s rice cultivation ***,several distinct rice varieties are widely cultivated in southern China.

关键词： breeding paddy dwarf

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四川省汶川地震灾区干线公路典型震害特征分析

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岩石力学与工程学报 2009年第6期28卷 1250-1260页

作者：吉随旺唐永建胡德贵汪军陶双江四川省交通厅公路规划勘察设计研究院四川成都610041

基于地震灾区的大量调查、检测、评估与抢通保通的成果,概括介绍了汶川大地震后四川省公路总体损毁情况;归纳总结了四川省国省干线公路工程路基、路面、桥梁、隧道等结构物典型震害特征,并从地质和工程角度简要的分析了震害产生原因。... 详细信息

基于地震灾区的大量调查、检测、评估与抢通保通的成果,概括介绍了汶川大地震后四川省公路总体损毁情况;归纳总结了四川省国省干线公路工程路基、路面、桥梁、隧道等结构物典型震害特征,并从地质和工程角度简要的分析了震害产生原因。桥梁毁坏程度与发震断裂的距离有很大的关系,隧道破坏程度不仅与发震断裂距离有关,而且与组成围岩的岩性有关,断裂带附近软硬相间的沉积岩隧道震害较为严重,花岗岩隧道震害轻微。边坡震害与断层带距离和组成边坡的岩性、坡度等有关,断裂带附近花岗岩、石灰岩及砂岩等组成的高陡边坡崩塌、滑坡等次生地质灾害非常严重。

关键词：公路工程汶川8.0级地震损毁典型震害

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载药纳米纤维素气凝胶的制备及其药物可控释放

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化工新型材料 2019年第3期47卷 193-197,202页

作者：唐爱民李静李德贵华南理工大学制浆造纸工程国家重点实验室广州510640

将2,2,6,6-四甲基哌啶-1-氧化物自由基(TEMPO)氧化纳米纤维素(NFC)与庆大霉素(GM)进行物理共混,采用冷冻干燥法制备出孔结构可调控的载药NFC气凝胶。探讨了NFC均质次数和羧基含量对GM/NFC气凝胶的孔结构、溶胀性、药物释缓性能以及抗菌... 详细信息

将2,2,6,6-四甲基哌啶-1-氧化物自由基(TEMPO)氧化纳米纤维素(NFC)与庆大霉素(GM)进行物理共混,采用冷冻干燥法制备出孔结构可调控的载药NFC气凝胶。探讨了NFC均质次数和羧基含量对GM/NFC气凝胶的孔结构、溶胀性、药物释缓性能以及抗菌效果的影响。结果表明:所制备的GM/NFC气凝胶的孔径范围为150～450μm,孔隙率均在96%以上。体外释放实验结果表明:药物累积释放率随气凝胶平均孔径的增加而升高,在420min内可控制在74.15%～90.19%之间。药物体外释药行为符合Peppas方程,药物释放以扩散控释型为主。同时GM/NFC气凝胶显示出较好的抗菌特性,对标准金黄色葡萄球菌的抑菌圈宽度范围为13.31～16.98mm。

关键词：纳米纤维素庆大霉素气凝胶可控释放抑菌效果

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