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Core and variable antimicrobial resistance genes in the gut microbiomes of Chinese and European pigs

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Competitive Complexation of Copper and Zinc by Sequentially Extracted Humic Substances from Manure Compost

动物学研究 2024年第1期

作者： Cui-Hong Tong Zhi-Peng Huo lu diao Dan-Yu Xiao Ruo-Nan Zhao Zhen-Ling Zeng Wen-Guang Xiong

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Agricultural Sciences in China 2008年第10期7卷 1253-1259页

作者： LIU Shuai WANG Xu-dong lu Li-lan diao Shi-rong ZHANG Jun-feng College of Resources and Environment Northwest A ＆ F University Yangling 712100 P.R.China

Chicken manure with similar content of copper and zinc was changes of organic carbon and humus substance complexed chosen to conduct a composting experiment to investigate the copper （HS-Cu） and zinc （HS-Zn）, which were extracted by water （H2O）, sodium hydroxide （NaOH）, and sodium pyrophate-NaOH mixture （Na4P2O7-NaOH）, sequentially. Distributions of copper and zinc in fulvic acids （FA） and humic acids （HA） in the three extracts were studied. During manure composting, the concentrations of copper and zinc increased from about 500 mg kg^-1 in the raw material to 1 100 mg kg^-1 in the final products. HS-Cu in H2O, NaOH, and Na4P2O7-NaOH extracts occupied 6.7, 26.7, and 19% averagely of total copper and HS-Zn represented 2.7, 13.7, and 17% averagely of total zinc in compost, respectively. In water extracts, both HA and FA mainly complexed with Cu and the mole ratio of Cu to Zn was 2.8 in HA fractions and was 2.6 in FA fractions, respectively. HA mainly complexed with copper, so that the ratios of HA-Cu to HA-Zn averaged 3.4 in NaOH extracts. FA had a similar potential to complex with copper and zinc, so that the ratio of FA-Cu to FA-Zn was close to 1. In Na4P2O7-NaOH extracts, HA or FA had a similar potential to complex with copper and zinc. The ratio of HS-Cu to HS-Zn was close to 1. With manure composting, Na4P2O7-NaOH extractable HS-Zn increased to a level as high as HS-Cu. This indicated that more and more stable complexes of HS-Zn were formed in the late decomposition period. The competition between copper and zinc to be complexed with humic substance became weaker and weaker with the decomposition process.

关键词： manure copper and zinc decomposition process humic substance sequential extraction

Protective Effects of Curcumin against Sodium Arsenite-induced Ovarian Oxidative Injury in a Mouse Model

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Chinese Medical Journal 2017年第9期130卷 1026-1032页

作者： Xiao-Ning Wang Chang-Jun Zhang Hong-lu diao Ying Zhang Reproductive Medical Center of Renmin Hospital Hubei University of Medicine Shiyan Hubei 442000 China

Background： Excessive reactive oxygen species （ROS） may lead to a number of reproductive diseases such as polycystic ovary syndrome. This study aimed to establish an animal model of ovarian oxidative stress and to assess the protective effect ofcurcumin against oxidative injury. Methods： Ovarian oxidative stress was induced in female Kunming mice （n - 40） with intraperitoneal injection of 8 mg/kg sodium arsenite （As） once every other day for 16 days; meanwhile, they were, respectively, treated by intragastric administration of 0, 100, 150, or 200 mg/kg （n - 10/group） curcumin once per day for 21 days. Ten normal mice were used as control. Then, the mice were injected intraperitoneally with BrdU and sacrificed; the right ovaries were collected for hematoxylin and eosin （HE） staining and Brd/J immunohistochemistry, and the left ovaries for enzyme-linked immunosorbent assay （ELISA） and Western blotting analyses. Results： The ELISA results showed that ROS （11.74 ± 0.65 IU/mg in 8 mg/kg AS± 0 mg/kg curcumin group vs. 10.71±0.91 IU/mg in control group, P = 0.021） and malondialdehyde （MDA）（0.32± 0.02 nmol/g in 8 mg/kg AS ＋ 0 mg/kg curcumin group vs. 0.27 ± 0.02 nmolig in control group, P = 0.048） increased while superoxide dismutase （SOD）（3.96 ± 0.36 U/mg in 8 mg/kg AS ＋ 0 mg/kg curcumin group vs. 4.51 ± 0.70 U/rag in control group, P = 0.012） and glutathione peroxidase （17.36 ± 1.63 U/g in 8 mg/kg AS ＋ 0 mg/kg curcumin group vs. 18.92± 1.80 U/g in control group, P - 0.045） decreased in the ovary after injection of As, indicating successful modeling of oxidative stress. Curcumin treatment could considerably increase SOD （4.57 ± 0.68, 4.49 ± 0.27, and 4.56 ± 0.25 U/rag in 100 mg/kg, 150 mg/kg, mad 200 mg/kg curcumin group, respectively, all P 〈 0.05） while significantly reduce ROS （10.64 ±1.38, 10.73 ± 0.71, and 10.67 ± 1.38 IU/mg in 100 mg/kg, 150 mg/kg, and 200 mg/kg curcumin group, respectively, all P 〈 0.05） and M DA （0.28± 0.02, 0.25 ±0.03, and 0.27 ±0.04 nmol/g in 1

关键词： Antioxidant Curcumin Mouse Ovary Oxidative Stress p66Shc

The OsBSK1-2-MAPK module regulates blast resistance in rice

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The Crop Journal 2024年第1期12卷 110-120页

作者： Shengping Li Xinquan Xiang Zhijuan diao Na Xia Ling lu Jing Zhang Zhiwei Chen Dingzhong Tang State Key Laboratory of Ecological Control of Fujian-Taiwan Crop Pests Key Laboratory of Ministry of Education for GeneticsBreeding and Multiple Utilization of CropsPlant Immunity CenterFujian Agriculture and Forestry UniversityFuzhou 350002FujianChina College of Life Science Fujian Agriculture and Forestry UniversityFuzhou 350002FujianChina Ministerial and Provincial Joint Innovation Centre for Safety Production of Cross-Strait Crops Fujian Agriculture and Forestry UniversityFuzhou 350002FujianChina Fujian Provincial Key Laboratory of Crop Breeding by Design Fujian Agriculture and Forestry UniversityFuzhou 350002FujianChina

Receptor-like cytoplasmic kinase OsBSK1-2 was reported to play an important role in regulation of response to rice blast,but the signaling pathway remained *** this study,we identified OsMAPKKK18 and previously uncharacterized MAPKKKs OsMAPKKK16 and OsMAPKKK19 that interact with *** of all three MAPKKKs was induced by Magnaporthe oryzae infection,and all three induced cell death when transiently expressed in Nicotiana benthamiana *** of OsMAPKKK16 and OsMAPKKK18 compromised blast resistance and overexpression of OsMAPKKK19 increased blast resistance,indicating that all three MAPKKKs are involved in regulation of rice blast ***,both OsMAPKKK16 and OsMAPKKK19 interacted with and phosphorylated OsMKK4 and OsMKK5,and chitin-induced MAPK activation was suppressed in osmapkkk16 and osbsk1-2 ***18 was earlier reported to interact with and phosphorylate OsMKK4 and affect chitin-induced MAPK activation,suggesting that OsBSK1-2 is involved in regulation of immunity through multiple MAPK signaling *** BSK1 in Arabidopsis,OsBSK1-2 was not involved in response to avirulent *** *** together,our results revealed important roles of OsMAPKKK16/18/19 and a OsBSK1-2-OsMAPKKK16/18/19-OsMKK4/5 module in regulating response to rice blast.

关键词： Disease resistance Magnaporthe oryzae Oriza sativa Rice blast

Innovative Mn3-xO4-y@NCA design:Leveraging Mn/O vacancies and amorphous architecture for enhanced sodium-ion storage

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Journal of Energy Chemistry 2024年第10期97卷 747-756页

作者： Kaijun Xie Xin Liu Kai Xia Lipeng diao Ping lu Mengmeng Wang Long Fang Yihui Zou Dongjiang Yang Xiaodong Zhang College of Chemistry and Chemical Engineering College of Environmental Science and Engineering State Key Laboratory of Bio-fibers and Eco-textiles Shandong Collaborative Innovation Center of Marine Biobased Fibers and Ecological Textiles Institute of Marine Biobased Materials Qingdao University Institute of Micro/Nano Materials and Devices Ningbo University of Technology

Manganese-based oxide electrode materials suffer from severe Jahn-Teller（J-T） distortion,leading to severe cycle instability in sodium ion ***,it is difficult to adjust the electron at d orbitals exactly to a low spin state to eliminate orbital degeneracy and suppress J-T distortion *** article constructed concentration-controllable Mn/O coupled vacancy and amorphous network in Mn3O4and coated it with nitrogen-doped carbon aerogel(Mn3-xO4-y@NCA).The existence of Mn/O vacancies has been confirmed by scanning transmission electron microscopy（STEM） and positron annihilation lifetime spectroscopy（PALS）.Atomic absorption spectroscopy（AAS） and X-ray photoelectron spectroscopy（XPS） determine the most optimal ratio of Mn/O vacancies for sodium ion storage is 1:*** functional theory（DFT） calculations prove that Mn/O coupled vacancies with the ratio of 1:2could exactly induce a low spin states and a d4electron configuration of Mn,suppressing the J-T distortion *** abundant amorphous regions can shorten the transport distance of sodium ions,increase the electrochemically active sites and improve the pseudocapacitance *** the synergetic effect of Mn/O coupled vacancies and amorphous regions,Mn3-xO4-y@NCA exhibits an energy density of 37.5 W h kg-1and an ultra-high power density of 563 W kg-1in an asymmetric *** sodium-ion batteries,it demonstrates high reversible capacity and exceptional cycling *** research presents a new method to improve the Na+storage performance in manganese-based oxide,which is expected to be generalized to other structural distortion.

关键词： Amorphous network Concentration-controllable Mn/O coupled vacancies Manganese-based metal oxide Sodium ion battery Sodium ion supercapacitor

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一种基于菲涅尔衍射的边缘检测算法

计算机学报 2006年第12期29卷 2138-2142页

作者：刁麓弘于斌李华中国科学院计算技术研究所国家智能计算中心深圳大学光电子学研究所深圳518060

利用菲涅尔衍射模型导出了一种新的边缘检测算法.为了克服菲涅尔衍射计算复杂的缺点,该方法被简化为一种线性卷积滤波器.通过与Sobel、Log和Canny三种边缘检测算子比较,可以看出新方法的结果与Canny算子相当且更加符合人类的认知.此外,... 详细信息

利用菲涅尔衍射模型导出了一种新的边缘检测算法.为了克服菲涅尔衍射计算复杂的缺点,该方法被简化为一种线性卷积滤波器.通过与Sobel、Log和Canny三种边缘检测算子比较,可以看出新方法的结果与Canny算子相当且更加符合人类的认知.此外,在含有丰富细节和微小变化的区域,新方法可以取得更好的结果.

关键词：边缘检测菲涅尔衍射复值函数卷积滤波 Canny算子

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基于混合语言模型的中文智能输入技术

北京工业大学学报 2007年第9期33卷 997-1001页

作者：章森刘磊刁麓弘北京工业大学应用数理学院北京100022

分析了中文智能输入技术的研究现状和存在的问题,提出了基于混合n-gram的中文智能输入技术,给出了系统实现的架构,研究了混合2-gram模型的有关问题以及字词网格的求解算法,讨论了自动预测与系统学习功能的实现.测试结果表明拼音到汉字... 详细信息

分析了中文智能输入技术的研究现状和存在的问题,提出了基于混合n-gram的中文智能输入技术,给出了系统实现的架构,研究了混合2-gram模型的有关问题以及字词网格的求解算法,讨论了自动预测与系统学习功能的实现.测试结果表明拼音到汉字自动转换正确率达到了92.1%,基本实现了预期目标.

关键词：中文智能输入 n—gram语言模型 Markov模型字词网格用户行为

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复杂物体的X射线相衬成像三维仿真

系统仿真学报 2009年第1期21卷 32-35页

作者：李涛涛李华刁麓弘中国科学院计算技术研究所智能中心北京100080 中国科学院研究生院北京100080 北京工业大学应用数理学院北京100022

用计算机仿真相衬成像可以对成像理论和方法的研究,以及成像系统的设计提供很好的平台。以X射线衍射理论为基础,利用图形学中光线追踪技术,提出了一个相衬成像的三维仿真算法,对由10个具有不同折射率的椭球组成的Shepp-Logan模型进行了... 详细信息

用计算机仿真相衬成像可以对成像理论和方法的研究,以及成像系统的设计提供很好的平台。以X射线衍射理论为基础,利用图形学中光线追踪技术,提出了一个相衬成像的三维仿真算法,对由10个具有不同折射率的椭球组成的Shepp-Logan模型进行了三维仿真实验,获得了具有相衬特征的边界增强效果的成像。对比实验表明,该算法可获得与真实物理实验一致的结果。

关键词：相衬成像菲涅尔衍射复杂物体三维仿真 Shepp-Logan模型

一种新型用于CN-比色检测和Zn2+/H2PO4-荧光识别的二芳烯探针（英文）

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有机化学 2019年第7期39卷 1930-1938页

作者：刁璐王仁杰王念省刘刚蒲守智江西科技师范大学有机功能分子重点实验室

合成了一种新型二芳烯1-(3,5-二甲基异噁唑-4-基)-2-{2-甲基-5-[(3-亚氨基萘酚-2-基)苯酚基]-噻吩-3-基}全氟环戊烯(1O)双重响应化学传感器,系统地研究了在光和离子刺激下1O的光致变色和荧光开关性质.实验结果表明,1O能够对CN-/F-裸眼识... 详细信息

合成了一种新型二芳烯1-(3,5-二甲基异噁唑-4-基)-2-{2-甲基-5-[(3-亚氨基萘酚-2-基)苯酚基]-噻吩-3-基}全氟环戊烯(1O)双重响应化学传感器,系统地研究了在光和离子刺激下1O的光致变色和荧光开关性质.实验结果表明,1O能够对CN-/F-裸眼识别,在CN-/F-作用下溶液的颜色从无色逐渐变为黄色;同时,1O可作为“Turn-on”型荧光探针对Zn^2+进行专一性识别.1O对CN-和Zn2+的检测极限分别达到1.03×10^-6和2.98×10-8 mol·L^-1.

关键词：二芳烯化学传感器锌离子氰根离子荧光增强