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微生态添加剂对蛋鸡肠道微生物结构菌群的影响

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现代畜牧兽医 2021年第8期 35-40页

作者：嵇宏杰匡伟姚远何宗亮伍冠锁罗奕秋孙盼盼南京市畜牧家禽科学研究所江苏南京210036

试验旨在研究微生态添加剂对蛋鸡肠道微生物结构菌群的影响。选择健康120日龄的淮南麻黄鸡,随机分成4组,每组6个重复,每个重复5只。各组依次添加0、0.5、1.0、2.0 g/kg的微生态制剂。试验期40 d,利用高通量测序技术及生信云平台对测序... 详细信息

试验旨在研究微生态添加剂对蛋鸡肠道微生物结构菌群的影响。选择健康120日龄的淮南麻黄鸡,随机分成4组,每组6个重复,每个重复5只。各组依次添加0、0.5、1.0、2.0 g/kg的微生态制剂。试验期40 d,利用高通量测序技术及生信云平台对测序结果进行分析。结果表明,在门水平上,肠道微生物群落主要由厚壁菌门、变形菌门、拟杆菌门、疣微菌门和放线菌门组成,微生态添加剂增加了蛋鸡肠道中的微生物群落丰度,在门水平上添加微生态制剂后使得梭菌族细菌丰度增加,在直肠中使变形菌门、拟杆菌门和疣微菌门发生显著变化。

关键词：微生态添加剂微生物群落蛋鸡肠道淮南麻黄鸡生物信息学

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南郊水厂超滤膜组合工艺运行情况评价

供水技术 2011年第3期5卷 1-5页

作者：纪洪杰高伟常海庆梁恒田希彬郭爱玲李圭白沈裘昌东营市自来水公司山东东营257452 哈尔滨工业大学市政环境工程学院黑龙江哈尔滨150090 上海市政工程设计研究总院上海200092

分析并评价了东营市南郊水厂(10×104m3/d)以超滤为核心的水质改善工程一年来的运行情况。生产实践表明,超滤组合工艺出水水质较工程实施前有很大提升,超滤出水浊度保持在0.02 NTU以下,组合工艺对CODMn、UV254和TOC的平均去除率分别为(4... 详细信息

分析并评价了东营市南郊水厂(10×104m3/d)以超滤为核心的水质改善工程一年来的运行情况。生产实践表明,超滤组合工艺出水水质较工程实施前有很大提升,超滤出水浊度保持在0.02 NTU以下,组合工艺对CODMn、UV254和TOC的平均去除率分别为(44.96±3.69)%、(43.22±2.21)%和(20.10±1.51)%,比砂滤出水分别提高了8.99,10.23和7.81百分点。同时组合工艺对藻类、病原性微生物去除效果显著,水质完全达到《生活饮用水卫生标准》(GB 5749—2006)的要求。常规工艺作为预处理能有效减缓膜污染,混凝、沉淀、砂滤和投加粉末活性炭等协同效应,有效地保证了超滤膜在可持续通量下稳定运行;采用的国产超滤膜产水性能良好且抗污染能力很强;气水联合清洗能够有效控制跨膜压差的增长,并延长恢复性化学清洗的周期;该组合工艺的实际投资和运行成本均低于预估值。

关键词：超滤组合工艺净水效能跨膜压差可持续通量经济频率

Compressive and energy absorption properties of closed-cell magnesium foams

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Rare Metals 2010年第4期29卷 417-420页

作者： ji Haibin,YAO Guangchun,LUO hongjie,ZU Guoyin,and LIU Letian School of Material and Metallurgy,Northeastern University,Shenyang 110004,China School of Material and Metallurgy Northeastern University Shenyang China

The quasi-static compressive mechanical behavior and deformation mechanism of closed-cell magnesium foams were studied, and the ef- fects of the density of magnesium foams on the compressive and energy absorption properties were also discussed. The results show that the compressive process of closed-cell magnesium foams is characterized by three deformation stages： linear elastic stage, collapsing stage and densification stage. At the linear elastic stage, the peak compressive strength （t70） and Young＇s modulus （E0） increase as the density increases Magnesium foams can absorb energy at the collapsing stage. In a certain strain range, the energy absorption capacity also increases as the density of magnesium foams increases.

关键词： magnesium foams compression energy absorption closed-cell Young's modulus

Pm21, Encoding a Typical CC-NBS-LRR Protein, Confers Broad-Spectrum Resistance to Wheat Powdery Mildew Disease

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Molecular Plant 2018年第6期11卷 879-882页

作者： Huagang He Shanying Zhu Renhui Zhao Zhengning jiang Yaoyong ji jian ji Dan Qiu hongjie Li Tongde Bie School of Food and Biological Engineering Jiangsu University Zhenjiang Jiangsu 212013 China School of Environment Jiangsu University Zhenjiang Jiangsu 2120131 China Key Laboratory of Wheat Biology and Genetic Improvement on Low & Middle Yangtze River Valley Wheat Region (Ministry of Agriculture) Yangzhou Academy of Agricultural Sciences Yangzhou Jiangsu 225007 China National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI) Institute of Crop Science Chinese Academy of Agricultural Sciences Beijing 100081 China

Dear Editor, Common wheat （Triticum aestivum, 2n = 6x = 42, AABBDD） is one of the most widely cultivated cereal crops, providing -20% of the calories consumed by humans （Fu et al., 2009）. However, wheat production is constantly challenged by powdery mildew disease, which occurs globally and is caused by the biotrophic fungal pathogen Blumena graminis f. sp. tritici （Bgt）. Utilization of powdery mildew resistance （Pm） genes is the most effective and economical way to control powdery mildew disease.

关键词： Pm21 疾病蛋白质小麦粉编码用途普通小麦小麦生产

姬原西部延长组长6_1储层成岩作用与成岩相特征

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地质找矿论丛 2018年第2期33卷 264-271页

作者：妥成荣王琪马晓峰马东旭田兵徐永吉红杰郝乐伟郭瑞良甘肃省油气资源研究重点实验室/中国科学院油气资源研究重点实验室兰州730000 中国科学院大学北京100049

针对姬原油田西部区块长6_1储层物性差、非均质性强、成岩作用较复杂的问题,文章通过铸体薄片、扫描电镜和物性资料分析手段,对其成岩作用和成岩相进行了研究。研究区以岩屑长石砂岩和长石岩屑砂岩为主,孔隙类型以残余原生粒间孔和次生... 详细信息

针对姬原油田西部区块长6_1储层物性差、非均质性强、成岩作用较复杂的问题,文章通过铸体薄片、扫描电镜和物性资料分析手段,对其成岩作用和成岩相进行了研究。研究区以岩屑长石砂岩和长石岩屑砂岩为主,孔隙类型以残余原生粒间孔和次生溶蚀孔为主。主要的成岩作用有压实、胶结、溶蚀和交代作用。其中,压实作用和胶结作用是原生孔隙降低的主要原因,溶蚀作用形成的次生孔隙在一定程度上改善了储层物性。通过成岩作用、储层物性和沉积相综合研究,划分出了4种主要的成岩相:弱压实—强溶蚀相;中等溶蚀—硅质胶结—高岭石充填相;中等压实—弱溶蚀相和强压实—碳酸盐胶结相。最后结合储层常规测井特征对各成岩相在剖面上分布规律、组合模式进行分析表明,研究区长6_1储层在剖面上的岩相组合模式主要有侧向封堵式、同心环式和纵向互层式。

关键词：姬原西部长61储层成岩作用成岩相岩相组合模式

Isotropic negative permeability composite based on Mie resonance of the BST-MgO dielectric medium

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Chinese Science Bulletin 2008年第21期53卷 3272-3276页

作者： ZHAO Qian KANG Lei DU Bo ZHAO hongjie XIE Qin LI Bo ZHOU ji LI LongTu MENG YongGang State Key Laboratory of Tribology Department of Precision Instruments and Mechanology Tsinghua University Beijing 100084 China State Key Laboratory of New Ceramics and Fine Processing Department of Materials Science and Engineering Tsinghua University Beijing 100084 China

Isotropic negative permeability composite,composed of BST-MgO dielectric cubes with high permit-tivity dispersed in the Teflon substrate with low permittivity,was designed and fabricated based on Mie resonance and the effective medium *** and simulations showed that the dielectric composite exhibited a strong sub-wavelength magnetic resonance at the first Mie resonance and possessed isotropic negative permeability,which resulted from the displacement current excited in the *** dielectric particle was equivalent to a magnetic dipole at the magnetic resonance,which could be adjusted by the size and permittivity of the *** may provide a convenient method to design isotropic metamaterials and invisible cloak at infrared and visible frequencies.

关键词：铁电体陶瓷产品磁导率电解质

Property variation of ionic liquid [Bmim][AuCl_4] immobilized on carboxylated polystyrene submicrospheres with a small surface area

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Chinese Science Bulletin 2013年第24期58卷 2950-2955页

作者： HE YaXing FU HaiYing LI Cheng ji Xiang GE XueWu ZOU Yang jiANG Zheng XU hongjie WU GuoZhong Shanghai Institute of Applied Physics Chinese Academy of Sciences Graduate University of Chinese Academy of Sciences Chinese Academy of Sciences Key Laboratory of Soft Matter Chemistry Department of Polymer Science and Engineering University of Science and Technology of China

In order to understand the effect of surface chemical groups on the immobilized species, Au-containing imidazolium-based ionic liquid (IL) [Bmim][AuCl4] was intentionally immobilized on polystyrene (PS) submicrospheres (d～300 nm) with a very small surface area (4-10 m2/g), which possess carboxyl-moiety (COONa or COOH) on the surface. The behavior of immobilized [Bmim][AuCl4 ] on the two types of submicrospheres was investigated by transmission electron microscopy (TEM), differential scanning calorimetry (DSC), and powder X-ray diffraction (XRD). It was revealed that the melting points (Tm) of [Bmim][AuCl4 ] that had been immobilized on PS-COONa and PS-COOH submicrospheres were decreased by 2.7 and 4.1℃, respectively. The interaction mechanism between the IL and submicrosphere surface moieties was further analyzed by X-ray absorption fine structure (XAFS) analysis. The data indicated that the coordination environment of Au species changed markedly when [Bmim] [AuCl4] was immobilized on the surfaces of PS-COONa and PS-COOH submicrospheres, as illustrated by the decrease in white line peak intensity. The effect of surface COOH groups on Tm depression and the white line peak intensity of the XANES spectrum is more pronounced than that of COONa groups, most likely due to the possible hydrogen bond formation between the COOH group and [Bmim]+.

关键词：离子液体聚苯乙烯表面积羧基 X射线吸收精细结构差示扫描量热法化学基团变异

基于标准能量块合约的电力中长期市场连续运营方案设计

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电网技术 2023年第1期47卷 129-141页

作者：刘敦楠李竹董治新陈刚李宏杰纪鹏华北电力大学经济与管理学院北京市昌平区102206 北京电力交易中心有限公司北京市西城区100031 江西电力交易中心有限公司江西省南昌市330000 山西电力交易中心有限公司山西省太原市030021

随着我国电力市场改革的深入推进,中长期交易向更加精细化转变,因此需要建立更为高效的连续运营的中长期市场,以满足未来新型电力系统多能互补、多态融合、多元互动的特性。基于此,亟需研究并设计兼顾多元化和标准化的电力市场机制,实... 详细信息

随着我国电力市场改革的深入推进,中长期交易向更加精细化转变,因此需要建立更为高效的连续运营的中长期市场,以满足未来新型电力系统多能互补、多态融合、多元互动的特性。基于此,亟需研究并设计兼顾多元化和标准化的电力市场机制,实现化繁为简,便于各类市场主体积极参与电力市场交易。按照平稳起步、有序衔接、便于操作的思路,引入最小块的概念,提出了适应我国国情的能量块交易品种,并设计了各交易周期下的标准能量块合约,构建了基于标准能量块合约的电力中长期市场连续运营典型方案。案例分析结果表明,所提方案既适用于现货试点省份,也适用于非现货试点省份,能够规范合同履约、激发市场活力、提高市场效率,从而有效引领电力市场体系建设。

关键词：中长期市场标准能量块合约连续运营电力市场机制

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浅谈低压交流接触器的选用

现代制造技术与装备 2017年第9期53卷 116-116,118页

作者：张云秀吴文兵姬红杰潍坊工程职业学院潍坊262500

合理选用接触器对电路安全和电力设备的正常运行至关重要。本文重点探讨了接触器的选型依据和不同负载下交流接触器如何选用。

关键词：交流接触器原理选型依据负载