检索结果-南通市图书馆

败酱草及其近缘种叶绿体全基因组分析和DNA条形码构建

动物学研究 2024年第1期

作者： Ya-Ling Zhu Lei-Lei Meng Jin-Hu Ma Xin yuan Shu-Wen Chen Xin-Rui Yi Xin-Yu Li Yi Wang Yun-Shu Tang Min Xue Mei-Zi Zhu Jin Peng Xue-Jin Lu Jian-Zhen Huang Zi-Chen Song Chong Wu Ke-Zhong Zheng qing-qing Dai Fan Huang Hao-Shu Fang

来源：博看期刊评论

在线全文

博看期刊

学校读者我要写书评

暂无评论

中国现代中药 2024年第10期26卷 1645-1653页

作者：孟文娜浦香东蒲婧哲申传璞陈庆张磊吕雄文马陶陶安徽医科大学药学院炎症免疫性疾病安徽省实验室/安徽医科大学中药配方颗粒中心安徽合肥230000 安徽省食品药品检验研究院中药质量研究与评价重点实验室安徽合肥230000 亳州济人药业安徽亳州236800

目的:基于败酱类药材基原植物的叶绿体基因组序列分析开发特定的DNA条形码,准确鉴别败酱草及其近缘种。方法:采用Illumina高通量测序技术对败酱科败酱属植物白花败酱、黄花败酱和异叶败酱的叶绿体基因组进行测序;采用生物信息学软件对... 详细信息

目的:基于败酱类药材基原植物的叶绿体基因组序列分析开发特定的DNA条形码,准确鉴别败酱草及其近缘种。方法:采用Illumina高通量测序技术对败酱科败酱属植物白花败酱、黄花败酱和异叶败酱的叶绿体基因组进行测序;采用生物信息学软件对基因组进行组装注释、特征分析、序列比较和系统发育分析;基于叶绿体基因组高突变区构建特异性DNA条形码进行验证。结果:3种败酱属植物叶绿体基因组呈四分体结构,全长分别为159585、158919、158919 bp,编码的基因数分别为130、132、132,包含8个rRNA基因和37个tRNA基因,蛋白质编码基因数分别为85、87、87。ccsA、ndhG、rpl23、ndhF序列作为特异性DNA条形码成功扩增16份样品,黄花败酱、白花败酱和少蕊败酱聚类在同一支,异叶败酱和糙叶败酱聚类在另一支。通过ccsA、ndhG、ndhF序列可进一步鉴别糙叶败酱和异叶败酱。结论:ccsA、ndhG、rpl23、ndhF序列可作为补充特异性DNA条形码区分败酱草及其近缘种。

关键词：败酱草叶绿体基因组分子鉴定 DNA条形码系统发育分析

同方期刊数据库

在线全文

学校读者我要写书评

暂无评论

槽轮式黄芪移栽机关键部件设计与试验

中国农机化学报 2024年第2期45卷 71-78页

作者：沈立新陈文辉滕淑霞顾秀艳李淼张掖市农业机械化技术推广站甘肃张掖734000

黄芪开沟覆膜露头农艺高产优势明显,但在实际生产中移栽环节主要依靠人工来完成,导致种植成本快速攀升,是制约根茎类中药材产业持续发展的“短板”。针对这一问题,设计槽轮式移栽机点苗机构和覆土机构2个关键部件。盛苗槽采用正反两个... 详细信息

黄芪开沟覆膜露头农艺高产优势明显,但在实际生产中移栽环节主要依靠人工来完成,导致种植成本快速攀升,是制约根茎类中药材产业持续发展的“短板”。针对这一问题,设计槽轮式移栽机点苗机构和覆土机构2个关键部件。盛苗槽采用正反两个方向在沿槽轮圆周方向倾斜排列的方式,通过地轮带动槽轮转动,可实现盛苗槽内的黄芪种苗按照正确的姿态投置在苗沟之中,且满足种苗向苗沟内侧两边交替投置的农艺要求;覆土机构采用螺旋绞龙结构,这样有利于实现苗沟覆土厚度均匀一致,为苗沟回填后保持土壤的平整度提供保障。通过田间试验,样机出苗整齐、长势良好、单株茁壮,无漏苗现象。在综合效益方面,相比对照机具,项目样机可节约地膜用量52 kg/hm^(2),减少用工20人/hm^(2),移栽环节可节省支出2000元/hm^(2),同时为秋季机械化挖掘收获作业创造有利条件。

关键词：黄芪种苗槽轮式移栽机倾斜槽点苗绞龙覆土

维普期刊数据库博看期刊

"调神畅志"针刺法对帕金森伴便秘模型大鼠结肠组织5-HT4R及CaM-MLCK信号通路影响的研究

在线全文

学校读者我要写书评

暂无评论

现代生物医学进展 2024年第3期24卷 410-414页

作者：白妍董兆玲卢金荣林玉杰肖艳李元秦正巍王顺黑龙江省中医药科学院黑龙江哈尔滨150036 黑龙江中医药大学黑龙江哈尔滨150040

目的:探讨"调神畅志"针刺法对帕金森伴便秘(Parkinson's disease with constipation)模型大鼠结肠组织中5-羟色胺4受体(5-HT4R)及钙调蛋白(CaM)-肌球蛋白轻链激酶(MLCK)信号通路影响的研究,并探讨其可能作用机制。方法:采用随机数字表... 详细信息

目的:探讨"调神畅志"针刺法对帕金森伴便秘(Parkinson's disease with constipation)模型大鼠结肠组织中5-羟色胺4受体(5-HT4R)及钙调蛋白(CaM)-肌球蛋白轻链激酶(MLCK)信号通路影响的研究,并探讨其可能作用机制。方法:采用随机数字表将60只大鼠分为空白组、假手术组、模型组、西药组、常规针刺组、调神畅志针刺组,每组10只。模型组、常规针刺组、调神畅志针刺组颈背部皮下注射鱼藤酮的方法制造PDD大鼠模型,并用阿扑吗啡(APO)诱导检测。常规针刺组选取天枢、足三里、上巨虚及舞蹈震颤控制区,接电针,连续波频率15Hz,刺激强度2 mA,留针30分钟,1日1次,连续4周;调神畅志针刺组:选取王顺教授"调神畅志"三六九针法,百会透太阳、中脘、气海、足三里、太冲,采用连续波,头针频率45Hz,腹针频率30Hz,肢体针频率15Hz(体现调神畅志三六九针法的头针重、腹针中、四肢针轻的量化刺激),刺激强度约2 mA,留针30 min,1日1次,连续4周;西药组采用美多芭、莫沙必利每日灌胃,连续治疗4周;模型组、假手术组:每日2 mL生理盐水灌胃,连续4周;空白组不予处理。采用Western blot法检测各组近端结肠组织中5-HT4R、CaM及MLCK蛋白表达以及含量水平。结果:与空白组相比,模型组大鼠近端结肠组织中5-HT4R、CaM及MLCK蛋白表达水平显著降低(P<0.01),与模型组比较,三个治疗组(西药组、常规针刺组、调神畅志针刺组)近端结肠组织5-HT4R、CaM及MLCK蛋白表达水平显著升高(P<0.01)。与常规针刺组相比,调神畅志组5-HT4R、CaM及MLCK蛋白表达水平明显升高(P<0.05)。结论:针刺可改善PD伴便秘大鼠模型便秘症状,且调神畅志针刺组优于常规针刺组,其作用机理可能通过调节大鼠结肠组织中5-HT4R蛋白表达以及激活CaM-MLCK信号通路来实现的。

关键词：针刺调神畅志法帕金森伴便秘 5-羟色胺4受体钙调蛋白-肌球蛋白轻链激酶信号通路信号通路

一种PID模糊控制器(fuzzy PI+fuzzy ID型)

在线全文

学校读者我要写书评

暂无评论

控制与决策 2009年第7期24卷 1038-1042页

作者：李庆春沈德耀中南大学信息科学与工程学院

提出一种二维PID模糊控制器,其结构形式简称为fuzzy PI+fuzzy ID型.根据fuzzy PI和fuzzy ID控制器的图解说明,确定该fuzzy PI和fuzzy ID控制器的模糊控制规则的相似性.理论分析表明,该PID模糊控制器除具有常规PID性能外,还具有非线性等... 详细信息

提出一种二维PID模糊控制器,其结构形式简称为fuzzy PI+fuzzy ID型.根据fuzzy PI和fuzzy ID控制器的图解说明,确定该fuzzy PI和fuzzy ID控制器的模糊控制规则的相似性.理论分析表明,该PID模糊控制器除具有常规PID性能外,还具有非线性等特点.仿真结果表明,与常规PID和fuzzy PI控制相比性能更优.

关键词： PID控制 PID模糊控制器非线性

Improved Genetic-Tabu Search Algorithm in Bus Scheduling Study

在线全文

学校读者我要写书评

暂无评论

Improved Genetic-Tabu Search Algorithm in Bus Scheduling Stu...

Coupling Among CH Stretching, Bending and Rocking Vibrational Modes in CH2Cl2

2010 3rd International Conference on Computer and Electrical Engineering(ICCEE 2010)

作者： WANG qing-rong ZHU Chang-sheng HUANG Hong-yong yuan yuan WANG qing- rong School of Computer and Communication Lanzhou University of Technology School of Electronic and Information Engineering Lanzhou Jiaotong University

Because the existence of defects in the traditional genetic algorithm,we use the improved the genetic-Tabu Search algorithm(GA-TS) in this paper for the optimization of bus scheduling model,then got over the traditional genetic algorithm’s problem such as slow-evolution,premature,local optimal solution and other issues,simulation results show that:GA-TS optimize performance superior to the traditional genetic algorithm.

关键词： public transit genetic algorithm Tabu Search algorithm Improved genetic-Tabu Search algorithm

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Physics 2006年第1期19卷 15-19页

作者： qing-hua Liu Xiao-ning Li Lu-yuan Hao Chuang Tan Yin-gui Zhou Ping Chen Huai Zhu Department of Chemical Physics National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei 230025 Department of Basic Education for Information Anhui College of Tracfitional Chinese Medicine Hefei 230038 China

Infrared absorption spectra of gaseous CH2Cl2 in the regions of 1200-12000 cm^-1 were measured using a Bruker IFS 120HR Fourier transform spectrometer in conjunction with a nmltipass cell. 47 vibrational levels of overtone and combinational spectral lines of the CH stretching （v1, v6）, bending （v2）, and rocking （v8） modes were analyzed and assigned. Utilizing the normal mode model and considering the coupling among CH stretching, bending and rocking vibrations, values of the harmonic frequency wi, the anharmonic constant xij, and the coefficients of Fermi and the Darling-Dennison resonances of v1, v6, v2 and v8 modes were also determined from experimental spectral data with nonlinear least-square fitting. These spectral constants reproduced the experimental levels very well. These results showed that Fermi resonance between CH stretching and rocking vibrations （kiss=-254.63 cm^-1） is stronger than that between CH stretching and bending vibrations （k122 = 54.87 cm^-1 ）; and that Darling-Dennison resonances between CH stretching and bending vibrations （k166=-215.28 cm^-1） is also much stronger than that between CH bending and rocking vibrations （k2288=5.72 cm^-1）.

关键词： Normal model Darling-Dennison resonance Fermi resonance

Manipulating nonlinear exciton polaritons in an atomically-thin semiconductor with artificial potential landscapes

在线全文

学校读者我要写书评

暂无评论

Light(Science & Applications) 2023年第10期12卷 2163-2171页

作者： yuan Luo Quanbing Guo Xinyi Deng Sanjib Ghosh qing Zhang Hongxing Xu Qihua Xiong State Key Laboratory of Low-Dimensional Quantum Physics Department of PhysicsTsinghua UniversityBeijing 100084China Wuhan Institute of Quantum Technology Wuhan 430206China School of Materials Science and Engineering Peking UniversityBeijing 100871China Beijing Academy of Quantum Information Sciences Beijing 100193China School of Physics and Technology Center for Nanoscience and Nanotechnologyand Key Laboratory of Artificial Micro-and Nano-structures of Ministry of EducationWuhan UniversityWuhan 430072China Frontier Science Center for Quantum Information Beijing 100084China Collaborative Innovation Center of Quantum Matter BeijingChina

Exciton polaritons in atomically thin transition-metal dichalcogenide microcavities provide a versatile platform for advancing optoelectronic devices and studying the interacting Bosonic physics at ambient *** engineering the favorable properties of polaritons is critically required for the rapidly growing ***,we demonstrate the manipulation of nonlinear polaritons with the lithographically defined potential landscapes in monolayer WS_(2)*** discretization of photoluminescence dispersions and spatially confined patterns indicate the deterministic on-site localization of polaritons by the artificial mesa *** the trapping sizes,the polariton-reservoir interaction strength is enhanced by about six times through managing the polariton–exciton spatial ***,the coherence of trapped polaritons is significantly improved due to the spectral narrowing and tailored in a picosecond ***,our work not only offers a convenient approach to manipulating the nonlinearity and coherence of polaritons but also opens up possibilities for exploring many-body phenomena and developing novel polaritonic devices based on 2D materials.

关键词： nonlinear potential nonlinearity

Poly（N-isopropylacrylamide）/alginate Copolymer Hydrogel Grafted Fabrics Embedding of Berberine Nanosuspension: Preparation Evaluation in Vitro and in Vivo

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Poly（N-isopropylacrylamide）/alginate Copolymer Hydrogel Gr...

2013年中国药学大会暨第十三届中国药师周

作者： He Xu Xu-Dong yuan Bao-De shen Jin Han qing-yuan Lv Ling Dai Ming-Gui Lin Chao Yu Jin-Xia Bai Hai-Long yuan Department of Pharmacy 302 Military Hospital of China School of Pharmacy Chengdu University of Traditional Chinese Medicine School of Science Monmouth University Institute of Tuberculosis 309 Military Hospital of China

In the present studies, a novel hydrogel-grafted fabrics embedding of berberine nanosuspension was developed for the treatment of infected wound. Hydrogel-grafted fabrics （HGFs） was prepared by graft copolymerization of N-isopropylacrylamide （NIAAm） and alginate using ceric ammonium nitrate as initiator. Berberine nanosuspension was prepared and embedded in the HGFs to achieve sustained drug release. The prepared HGFs embedding of berberine nanosuspension was characterized by Fourier transform infrared spectroscopy （FT-IR）, scanning electron microscopy （SEM）, and swelling degree studies. FT-IR revealed that berberine was embedded into the matrix of HGFs, rather than on the surface. SEM showed that a thin hydrogel layer was formed on the surface of nonwoven fibers. The swelling study showed that HGFs was water absorbing with reversible temperature sensitivity. The drug release study demonstrated that HGFs could be used as a sustained drug delivery system of hydrophobic compounds. The berberine nanosuspension embedded HGFs was further investigated in an animal infected wound model and was found to be a very promising wound healing dressing for the treatment and healing of infected wounds.

关键词： Hydrogel PNIAAm Hydrogel grafted fabrics Berberine Nanosuspension wound dressing

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

吸波/防弹复合材料的研发

合成纤维 2024年第3期53卷 16-19页

作者：陈虹李年华许冬梅艾青松吴中伟刘元坤北京航天雷特机电工程有限公司北京100074 北京航天试验技术研究所北京100074

采用玻璃纤维布/改性环氧树脂、碳纤维布/环氧树脂以湿法手糊成型工艺制备透波层和反射层,并与吸波浆料浸渍后的芳纶蜂窝芯复合制成电磁屏蔽材料。将电磁屏蔽材料与芳纶防弹板复合制成吸波/防弹一体化材料,该材料可满足GA 141—2010防... 详细信息

采用玻璃纤维布/改性环氧树脂、碳纤维布/环氧树脂以湿法手糊成型工艺制备透波层和反射层,并与吸波浆料浸渍后的芳纶蜂窝芯复合制成电磁屏蔽材料。将电磁屏蔽材料与芳纶防弹板复合制成吸波/防弹一体化材料,该材料可满足GA 141—2010防弹标准要求,在频率2~18 GHz范围的最大反射率可达-25 dB,具有较好的吸波性能。

关键词：碳纤维玻璃纤维芳纶蜂窝电磁屏蔽防弹反射率