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Effect of drainage on CO_2, CH_4, and N_2O fluxes from aquaculture ponds during winter in a subtropical estuary of China

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Journal of Environmental Sciences 2018年第3期30卷 72-82页

作者： Ping Yang Derrick Y.f Lai Jia f.huang Chuan Tong School of Geographical Sciences Fujian Normal University Key Laboratory of Humid Sub-tropical Eco-geographical Process of Ministry of Education of China Fujian Normal University Department of Geography and Resource Management and Centre for Environmental Policy and Resource ManagementThe Chinese University of Hong Kong

Aquaculture ponds are dominant features of the landscape in the coastal zone of ***,aquaculture ponds are drained during the non-culture period in ***,the effects of such drainage on the production and flux of greenhouse gases（GHGs）from aquaculture ponds are largely *** the present study,field-based research was performed to compare the GHG fluxes between one drained pond（DP,with a water depth of 0.05 m）and one undrained pond（UDP,with a water depth of 1.16 m）during one winter in the Min River estuary of southeast *** the entire study period,the mean CO2flux in the DP was（0.75±0.12）mmol/（m^2·hr）,which was significantly higher than that in the UDP of（-0.49±0.09）mmol/（m^2·hr）（p0.01）.This indicates that drainage drastically transforms aquaculture ponds from a net sink to a net source of CO2in *** CH4and N2O emissions were significantly higher in the DP compared to those in the UDP（CH4=（0.66±0.31）vs.（0.07±0.06）mmol/（m^2·hr）and N2O=（19.54±2.08）vs.（0.01±0.04）μmol/（m^2·hr））（p〈0.01）,suggesting that drainage would also significantly enhance CH4and N2O *** in environmental variables（including sediment temperature,p H,salinity,redox status,and water depth）contributed significantly to the enhanced GHG emissions following pond ***,analysis of the sustained-flux global warming and cooling potentials indicated that the combined global warming potentials of the GHG fluxes were significantly higher in the DP than in the UDP（p〈0.01）,with values of739.18 and 26.46 mg CO2-eq/（m^2·hr）,*** findings suggested that drainage of aquaculture ponds can increase the emissions of potent GHGs from the coastal zone of China to the atmosphere during winter,further aggravating the problem of global warming.

关键词： Aquaculture pond Drainage management Greenhouse gas flux Global warming Min River estuary

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Short-time Oxidation of Alloy 690 in High-temperature and High-pressure Steam and Water

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Journal of Materials Science & Technology 2012年第6期28卷 562-568页

作者： f.huang J.Q.Wang E.H.Han W.Ke State Key Laboratory for Corrosion and Protection Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China

The oxidation behavior of alloy 690 exposed to high-temperature and high-pressure steam and water at 280℃ for 1 h was investigated by scanning electron microscopy （SEM）, atomic force microscopy （AfM） and X-ray photoelectron spectroscopy （XPS）. In high-temperature and high-pressure steam, the oxide film is composed of an outermost Ni-rich hydroxides layer, an intermediate layer of hydroxides and oxides enriched in Cr, an inner oxide layer. The film formed in high-temperature water is similar to that in steam, except for missing the Ni-rich hydroxides layer. Samples with different surface finishes （electropolished, mechanically polished, ground, and as-received） were prepared for comparison. A general increase of the oxide thickness with the degree of surface roughness is observed. The equivalent oxide thicknesses lie in the range of 100-200 nm for the as-received samples, 150-250 nm for the samples ground to 400# and 10-20 nm for the samples ground to 1500#, mechanically polished, and electropolished.

关键词： Alloy 690 Oxidation High-temperature water Surface finish X-ray photoelectron spectroscopy (XPS)

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Colletotrichum species associated with cultivated citrus in China

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fungal Diversity 2013年第4期61卷 61-74页

作者： f.huang G.Q.Chen X.Hou Y.S.fu L.Cai K.D.Hyde H.Y.Li Institute of Biotechnology Zhejiang UniversityHangzhou 310058China State Key Laboratory of Mycology Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China Institute of Excellence in fungal Research Mae Fah Luang UniversityChiang Rai 57100Thailand

There have been considerable advances in the understanding of species concepts in the genus *** has lead to the need to carry out fresh surveys of Colletotrichum species associated with important *** species are associated with Citrus plants as saprobes,important pre-harvest and post-harvest pathogens,as well as *** this study,a total of 312 Colletotrichum strains were isolated from leaves,shoots and fruits of cultivated Citrus and fortunella species with or without disease symptoms across the main citrus production areas in *** morphology of all strains were studied and multilocus(ACT,TUB2,CAL,GAPDH,GS,ITS)phylogeny *** were from four important species complexes of Colletotrichum,namely *** species complex,*** species complex,*** species complex and a final group including ***,which was rare on Citrus *** species belonging to the *** species complex comprised *** porioides and ***,the *** complex comprised *** and a new species *** and the *** complex included a new species,*** ability of strains to cause anthracnose on citrus fruits was tested by inoculation and strains of Colletotrichum gloeosporioides,*** and *** were pathogenic.

关键词： Citrus industry Citrus diseases Anthracnose Colletotrichum gloeosporioides Colletotrichum acutatum Colletotrichum boninense Morphology Phylogenetic analysis

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鼻咽癌病人EB病毒EBNA-2A及EBNA-LP IgG和IgA抗体的测定

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病毒学报 1990年第3期6卷 228-232页

作者：韩汝晶 f.huang E.Kieff 曾毅吉林医学院美国哈佛大学医学院微生物室中国预防医学科学院病毒学研究所

Epstein-Barr病毒核抗原(EBNA)是EB病毒潜伏感染时表达的主要抗原之一。它与EB病毒潜伏感染和转化正常细胞引起肿瘤有关。本实验用间接免疫荧光法(IIf),采用经EB病毒表达EBNA-2A及EBNA-LP的基因组转染的大鼠成纤维细胞作为靶细胞,测定... 详细信息

Epstein-Barr病毒核抗原(EBNA)是EB病毒潜伏感染时表达的主要抗原之一。它与EB病毒潜伏感染和转化正常细胞引起肿瘤有关。本实验用间接免疫荧光法(IIf),采用经EB病毒表达EBNA-2A及EBNA-LP的基因组转染的大鼠成纤维细胞作为靶细胞,测定了30例鼻咽癌(NPC)病人和30例正常人血清中的EBNA-2A及EBNA-LP的IgG和IgA抗体,结果表明,30例NPC病人的IgG/EBNA-2A抗体阳性率为100％,平均几何滴度(GMT)为1:38.9。而30例正常人的阳性率为70％,GMT为1:7.9。两者有显著性差异。在30例NPC病人IgG/EBNA-LP抗体的阳性率为87％,GMT为1:9.3。30例正常人的阳性率为67％,GMT为1:7.9。两者之间无明显差异。IgA/EBNA-2A和IgA/EBNA-LP抗体在NPC病人和正常人均为阴性。这可能是由于在NPC病人癌细胞中没有EBNA-2A和EBNA-LP这两种抗原的表达。这结果对进一步研究EB病毒与NPC发生的关系有一定意义。

关键词：鼻咽肿瘤 EB病毒核抗原

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Evaluation of the Medicinal Herb,Graptopetalum paraguayense,as a Therapeutic Treatment for Liver Cancer

Evaluation of the Medicinal Herb,Graptopetalum paraguayense,...

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第十四届全国中药和天然药物学术研讨会

作者： Wei-Hsiang Hsu Hong-Jhih Jhuang Chi-Ying f.huang National Yang-Ming University

＜正＞The risk was found more than 100-fold increased risk of hepatocellular carcinoma（HCC）among hepatitis B virus（HBV）chronic carriers with both obesity and diabetes,indicating synergistic effects of metabolic factors and *** hepatic fibrosis and cirrhosis are risk factors for ***,we demonstrated that an extract from Graptopetalum

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Intrauterine hyperglycemia altered both imprinting erasure and reestablishment process in germ cells of male offspring

Intrauterine hyperglycemia altered both imprinting erasure a...

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中国中西医结合学会生殖医学分会首届学术年会暨生殖医学专业委员会成立大会

作者： J.Ren G.-L.Ding H.-f.huang J.-Z.Sheng Department of Pathophysiology Zhejiang University The International Peace Maternnity And Child Health Hospital School of MedicineShanghai jiaotong University The Key Laboratory of Reproductive Genetics Ministry of EducationChina

OBJECTIVE:It has been reported the expression of some imprinted genes were significantly altered in gestational diabetes mellitus(GDM)*** imprinting erasure occurred during E11.5-13.5,while imprinting reestablishrnent is completed at E18.5 in male mice *** function of methyltransferases 1(DNMT1)is maintaining methylation,and DNMT3a/3b are

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Merging bound states in the continuum in an open acoustic resonator

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 124-131页

作者： Lujun huang Bin Jia Artem S.Pilipchuk Sibo huang Chen Shen Almas f.Sadreev Yong Li Andrey E.Miroshnichenko School of Physics and Electronic Sciences East China Normal University Institute of Acoustics Tongji University L.V.Kirensky Institute of Physics Department of Mechanical Engineering Rowan University School of Engineering and Technology University of New South Wales at Canberra

Bound states in the continuum （BICs） are perfectly localized resonances despite embedding in the continuum ***,an isolated BIC is very sensitive to the structure ***,we report merging acoustic BICs in a single open resonator,robust against the structure *** find that both symmetry-protected BIC and friedrich-Wintgen BIC are sustained in a single coupled waveguide-resonator *** varying the height and length of the resonator,these two BICs move toward each other and merge into a single one at a critical *** to an individual BIC,the merged BIC is robust against fabrication error because its Q-factor is proportional to ΔL-4,whereΔL embodies the structure *** essence of this extraordinary phenomenon is perfectly explained by the two-and three-level approximations of the effective nonHermitian ***,we present direct experimental demonstrations of the moving and merging of BICs in a coupled 3D waveguide-resonator,which are evidenced by the vanishing of the linewidth of fano resonance in the transmission *** results may find exciting applications in designing high-quality acoustic sources,sensors and filters.

关键词： acoustic resonances bound state in the continuum high-Q resonances

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Quickly obtaining densely dispersed coherent particles in steel matrix and its related mechanical property

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 111-118页

作者： Xiaoxiao Wang Qingsong huang School of Chemical Engineering Sichuan UniversityChengdu 610065China

Densely distributed coherent nanoparticles(DCN)in steel matrix can enhance the work-hardening ability and ductility of steel *** the routes to this end can be generally classified into the liquid-solid route and the solid-solid ***,the formation of DCN structures in steel requires long processes and complex *** far,obtaining steel with coherent particle enhancement in a short time remains a bottleneck,and some necessary steps remain ***,we show a high-efficiency liquid-phase refining process reinforced by a dynamic magnetic ***-Y-Mn-O particles had an average size of around(3.53±1.21)nm and can be obtained in just around 180 *** small nanoparticles were coherent with the matrix,implying no accumulated dislocations between the particles and the steel *** findings have a potential application for improving material machining capacity,creep resistance,and radiation resistance.

关键词： ferritic steels coherent particles microstructure compression test work hardening

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Economic effect of China's carbon neutrality target under shared socioeconomic pathways

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Science China Earth Sciences 2025年第1期68卷 142-157页

作者： Zemiao LIU Xianjin huang Xinxian QI School of Geography and Ocean Science Nanjing University Key Laboratory of Carbon Neutrality and Territory Optimization Ministry of Natural Resources frontiers Science Center for Critical Earth Material Cycling Nanjing University

Economic feasibility is crucial for achieving the carbon neutrality target. However, current integrated assessments often underestimate the economic impacts of mitigation policies due to the lack of consideration of their economic benefits. This study integrates a warming-labour productivity model with a typical integrated assessment model using shared socioeconomic pathways. It simulates China's economic development and carbon emission levels under both baseline and carbon-neutral policy scenarios, evaluating the economic costs and benefits of emission reduction policies aimed at achieving carbon neutrality. These findings reveal the following:(1) The economic costs of emission reduction policies are projected to peak between 2050 and 2060, ranging from 0.41% to 9.37% of total GDP in the baseline scenario, primarily due to increased energy prices and R&D investments. These costs are expected to decline rapidly after 2070.(2) China's carbon-neutral policies will mitigate global warming, with the economic benefits of mitigation projected to reach 5.65% to 17.24% of China's total GDP by 2100.(3) Lowcarbon scenarios SSP1 and SSP4 could significantly reduce initial economic costs and advance the onset of net economic gains to 2060. This integrated assessment confirms that China's carbon neutrality target offers substantial net economic benefits in the long term. To minimize initial economic costs, efforts should focus on enhancing consumption-side transitions, upgrading lowcarbon technologies, and adopting new energy sources.

关键词： Climate change China Carbon neutrality Economic effects Policy

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Tectonic modes of mantle convection and their implications for Earth's tectonic evolution based on three-dimensional numerical simulations

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Science China Earth Sciences 2025年第1期68卷 270-296页

作者： Song XIANG Jinshui huang Bingcheng WU School of Earth and Space Sciences University of Science and Technology of China CAS Center of Excellence in Comparative Planetary Studies

five tectonic modes of mantle convection are obtained and analyzed with three-dimensional numerical models in a spherical shell domain. The five tectonic convective modes are non-plate mobile-lid, plate-like mobile-lid, episodic plate-like mobile-lid, episodic stagnant-lid, and stagnant-lid convective modes, respectively. The typical characteristics of these five tectonic modes and their numerical classification criteria based on plateness, mobility, and their standard deviations are presented and discussed. The results show that the yield stress of the lithosphere has profound effects on the tectonic convective *** the gradual increase of yield stress, the tectonic mode of mantle convection changes from one to another sequentially through the aforementioned five modes. Additionally, as the Rayleigh number increases, the range of yield stress for the platelike mobile-lid convective mode decreases, and the dimensionless transition stress between different tectonic modes ***, the dimensional transition stress between the non-plate mobile-lid convective mode and plate-like mobile-lid convective mode increases with the increase of Rayleigh number, but decreases between other tectonic modes. furthermore, we find that the transition stress between different tectonic modes is inversely proportional to the internal heating rate, with the transition stress decreasing as the internal heating rate increases. The fitting analysis of the transition stress between tectonic modes shows that Earth's current plate tectonics correspond to a lithospheric yield stress of 150–250 MPa, which aligns with the strength of serpentinized mantle rock determined by experimental petrography. If the Archean mantle was 300°C warmer than it is today, then the Earth was in an episodic stagnant-lid convective mode. The tectonic evolution of the Earth's surface is closely related to the lithospheric strength and the process of thermal evolution. If the lithospheric strength w

关键词： Tectonic mode of mantle convection Plate-like mobile-lid convection Episodic plate-like mobile-lid convection Episodic stagnant-lid convection Plate tectonics and tectonic evolution of the Earth

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