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蛋鸡笼养及其替代系统

中国家禽 2008年第8期30卷 16-16页

作者： ian J.h.Duncan 加拿大安大略省圭尔夫大学

20世纪40年代，笼养的引入，首先使蛋鸡与其排泄物分离，阻断了传染病与寄生虫病的传播，从而提高了蛋鸡福利；其次，能进行小群饲养，从而接近母鸡喜欢的自然群体大小；其三，笼养系统中蛋鸡啄羽和自残的发生率通常低于非笼养系统；其... 详细信息

20世纪40年代，笼养的引入，首先使蛋鸡与其排泄物分离，阻断了传染病与寄生虫病的传播，从而提高了蛋鸡福利；其次，能进行小群饲养，从而接近母鸡喜欢的自然群体大小；其三，笼养系统中蛋鸡啄羽和自残的发生率通常低于非笼养系统；其四，笼养舍空气质量通常好于非笼养舍。然而，相继而来的集约化生产却导致蛋鸡福利水平迅速下降，现在人们公认笼养存在很多福利缺陷。

关键词：笼养蛋鸡系统集约化生产寄生虫病小群饲养群体大小空气质量

Controlled generation of picosecond-pulsed higher-order Poincaré sphere beams from an ytterbium-doped multicore fiber amplifier

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Photonics Research 2023年第2期11卷 181-188页

作者： KUNhAO JI DI LIN ian A. DAVIDSON SIYI WANG JOEL CARPENTER YOShIMIChI AMMA YONGMIN JUNG MASSIMILianO GUASONI DAVID J. RIChARDSON Optoelectronics Research Centre University of SouthamptonSouthampton SO171BJUK Institute of Advanced Photonics Technology School of Information EngineeringGuangdong University of TechnologyGuangzhou 510006China Guangdong Provincial Key Laboratory of Photonics Information Technology Guangdong University of TechnologyGuangzhou 510006China School of Information Technology and Electrical Engineering The University of QueenslandBrisbaneQLD 4072Australia Fujikura Ltd. Chiba 285-8550Japan

higher-order Poincarésphere(hOPS) beams with spatially variable polarization and phase distributions are opening up a host of unique applications in areas ranging from optical communication to ***, the flexible generation of these beams with high peak power from compact laser systems remains a challenge. here, we demonstrate the controlled generation of hOPS beams based on coherent beam combination from an Yb-doped multicore fiber(MCF) amplifier. Using a spatial light modulator to adaptively adjust the wavefront and polarization of the signals seeded into the individual cores of the MCF various structured beams(including cylindrical vector beams and first-and second-order vortex beams) were generated with peak powers up to 14 k W for ~92 ps pulses.

关键词： amplifier polarization fiber

3-D ANALYTIC SIGNAL IN ThE INTERPRETATION OF TOTAL MAGNETIC FIELD DATA AT LOW MAGNETIC LATITUDES

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3-D ANALYTIC SIGNAL IN THE INTERPRETATION OF TOTAL MAGNETIC ...

理论与应用地球物理研讨会

作者： ian N. MacLeod Keith Jones Ting Fan nai Geosoft Inc. 85 Richmond St.W.8th Floor Toronto Ontario M5H-2C9 Canada Ashton Mining Limited 24 Outram Street West Perth Western Australia 6005

＜正＞ The interpretation of magnetic field data at low magnetic latitudes is difficult because the vector nature of the magnetic field increases the complexity of anomalies from magnetic rocks. The most obvious approach to this problem is to reduce the data to the magnetic pole, where the presumably vertical magnetization vector will simplify observed anomalies. however, RTP requires special treatment of North-South features in data observed in low magnetic latitudes due to high amplitude corrections of these features. Furthermore, RTP requires the assumption of induced magnetization with the result that anomalies from remanently and anisotropically magnetized bodies can be severely *** amplitude of the 3-D analytic signal of the total magnetic field produces maxima over magnetic contacts regardless of the direction of magnetization. The absence of magnetization direction in the shape of analytic signal anomalies is a particularly attractive characteristic for the interpretation of magnetic field data near the magnetic equator. Although the amplitude of the analytic signal is dependent on magnetization strength and the direction of geologic strike with respect to the magnetization vector, this dependency is easier to deal with in the interpretation of analytic signal amplitude than in the original total field data or pole reduced magnetic field. It is also straight forward to determine the depth to sources from the distance between inflection points of analytic signal anomalies.

关键词： analytic signal magnetic interpretation reduction to the pole magnetic depth

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离子液体对微藻的急性毒性效应

安全与环境学报 2016年第1期16卷 381-386页

作者：吴洁陈晓娣韩萍芳 BEADhAM ian 胡兰邓芸顾军南京工业大学生物与制药工程学院南京210009 南京大学昆山创新研究院江苏昆山215347 School of Life Sciences Pharmacy & Chemistry Kingston University Kingston KT1 2EE Surrey UK 江南大学环境与土木工程学院江苏无锡214122 南京大学物理学院南京210093

采用流式细胞术研究离子液体1-丁基-3-甲基咪唑氯盐（[C4mim][Cl]）和1-丁基-3-甲基咪唑四氟硼酸盐（[C4mim][BF4]）对四尾栅藻的毒性影响,测定了细胞增殖、叶绿素荧光、细胞膜完整性和酯酶活性的变化。结果表明,2种离子液体均可抑制细... 详细信息

采用流式细胞术研究离子液体1-丁基-3-甲基咪唑氯盐（[C4mim][Cl]）和1-丁基-3-甲基咪唑四氟硼酸盐（[C4mim][BF4]）对四尾栅藻的毒性影响,测定了细胞增殖、叶绿素荧光、细胞膜完整性和酯酶活性的变化。结果表明,2种离子液体均可抑制细胞增殖,且抑制作用随离子液体质量浓度和暴露时间增加而增强。计算得到96 h[C4mim][Cl]和[C4mim][BF4]的半数效应质量浓度EC50分别为49.61 mg/L和42.22 mg/L。测试期间发现,[C4mim][Cl]（质量浓度20~200 mg/L）和[C4mim][BF4]（质量浓度20~150 mg/L）对叶绿素荧光强度有一定的抑制作用,对细胞膜完整性无明显影响,随离子液体处理时间延长,对酯酶活性表现为先刺激后抑制作用;经200 mg/L[C4mim][BF4]处理藻细胞96 h后,藻细胞叶绿素的平均荧光强度仅为对照组的20%,酯酶活性为对照组的5%,且95%细胞膜发生破裂。2种离子液体对四尾栅藻均有毒性作用,这表明离子液体一旦进入水环境,将会对水生环境带来一定风险。

关键词：环境学离子液体毒性流式细胞术叶绿素荧光细胞膜完整性酯酶活性

金属钨三键多核金属有机配合物高压拉曼及红外光谱研究

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光谱学与光谱分析 2001年第5期21卷 596-598页

作者：许振华 Andreas Mayr ian S Butler 北京大学化学与分子工程学院 Department of Chemistry State University of New York at Stony BrookStony BrookNew York 11794-3400USA Department of Chemistry McGill University801 Sherbrooke Street WestMontrealQuebecCanada H3A 2K6

研究了金属钨三键多核金属有机配合物 [Cl(CO) 2 (DPPE)WCC6 h4CCC6 h4NC]2 ReCl(CO) 3(DPPE =bis(diphenylphosphino)ethane,(Ph) 2 PCh2 Ch2 P(Ph) 2 )不同压力下的拉曼和红外光谱 (最高压力约 5 0kbar)。配合物在 3 0kbar存在一压力诱导二级相变。金属钨三键伸缩振动ν(WC)压力相关 (dν/dp)在低压相区 ( 0 5 9cm-1·(kbar) -1)与高压相区 ( 0 0 4cm-1·(kbar) -1)差别很大 (约 15倍 )。在高压下 ,从基团Cl(CO) 2 (DPPE)WC中的金属钨W向COπ 轨道的π 反馈明显增强 ,WC的键强度减弱 ,力常数减小和ν(WC)降低 ;此效应与压力缩短WC键 ,增大力常数和增加ν(WC)的效应互相竞争。

关键词：拉曼光谱红外光谱金属三键有机配合物相变钨压力诱导

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减缓气候变化:排放定价,以稳定全球气候

世界农业 2015年第11期 78-81页

作者： Joseph E.Aldy Alan J.Krupnick Richard G.Newell ian W.h.Parry William A.Pizer 黄文芳农民日报社北京100029

本文(为非专业人士)在减缓气候变化的政策设计方面提供了高度简化的、讨论的主要问题及其争议。通过范例讨论如何采取行动,以减少温室气体排放量的有效成本效益和福利最大化。同时,探讨在国内排放控制政策工具的选择,实施和鼓励技术创... 详细信息

本文(为非专业人士)在减缓气候变化的政策设计方面提供了高度简化的、讨论的主要问题及其争议。通过范例讨论如何采取行动,以减少温室气体排放量的有效成本效益和福利最大化。同时,探讨在国内排放控制政策工具的选择,实施和鼓励技术创新等各种问题。

关键词：气候排放二氧化碳价格成本

Towards 10 Gb/s orthogonal frequency division multiplexing-based visible light communication using a GaN violet micro-LED

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Photonics Research 2017年第2期5卷 35-43页

作者： MOhAMED SUFYAN ISLIM RICARDO X.FERREIRA XianGYU hE ENYUAN XIE STEFAN VIDEV ShAUN VIOLA SCOTT WATSON NIKOLAOS BAMIEDAKIS RIChARD V.PENTY ian h.WhITE ANThONY E.KELLY ERDAN GU hARALD hAAS MARTIN D.DAWSON Li–Fi R&D Centre the University of Edinburgh Institute for Digital Communications Institute of Photonics Department of Physics University of Strathclyde Institute for Digital Communications Li–Fi R&D Centre the University of Edinburgh School of Engineering University of Glasgow Centre for Advanced Photonics and Electronics Electrical Engineering Division Department of Engineering University of Cambridge

Visible light communication(VLC)is a promising solution to the increasing demands for wireless *** nitride micro-sized light emitting diodes(micro-LEDs)are strong candidates for VLC due to their high *** violet micro-LEDs are reported in this work with electrical-to-optical bandwidths up to 655 *** orthogonal frequency division multiplexing-based VLC system with adaptive bit and energy loading is demonstrated,and a data transmission rate of 11.95 Gb/s is achieved with a violet micro-LED,when the nonlinear distortion of the micro-LED is the dominant noise source of the VLC system.A record 7.91 Gb/s data transmission rate is reported below the forward error correction threshold using a single pixel of the segmented array when all the noise sources of the VLC system are present.

关键词： Towards 10 Gb/s orthogonal frequency division multiplexing-based visible light communication using a GaN violet micro-LED VLC OFDM LEDs

Application and Effect of Transcutaneous Electrical Nerve Stimulation for Multimodal Analgesia in Perioperative of Total Knee Joint Arthroplasty

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Application and Effect of Transcutaneous Electrical Nerve St...

2019楚天骨科高峰论坛暨第二十六届中国中西医结合骨伤科学术年会

作者： Tianyi Cao Quan Zhang Gang Zu Guihe han Zhen ian Affiliated hospital of integrated traditional Chinese and Western medicine Zhejiang Chinese Medicine University Department of Orthopaedics Zhejiang Integrated Chinese and Western Medicine Hospital

Objective:To observe the effect of transcutaneous electrical nerve stimulation during the perioperative multimodal analgesia for total knee ***:Sixty patients diagnosed knee osteoarthritis and suffered unilateral TKA in department of Orthopedics,Zhejiang traditional Chinese medicine hospital,from March 2009 to May 2012,were randomly divided into control group and treatment group,every group had thrity *** patients were given celecoxib preoperatively,received knee periarticular injection with mixture drug intraoperatively, given celecoxib and morphine sulfate controlled-release tablets *** group increased using the therapy of transcutaneous electrical nerve stimulation *** started to receive continuous passive motion 24 h *** visual analogue scales,passive and active range of motion of knee joint,and complications were ***:Treatment group had lower scores for pain than control group from 24 h to 1 week postoperatively(Phad higher passive and active range of motion of knee joint than control group from 24 h to 2 weeks postoperatively(Phere were 19 patients ’ skin around knee had appeared varying degrees of annular blood stasis trace in treatment group,and 5 patients appeared ***:It is significant to apply transcutaneous electrical nerve stimulation for total knee arthroplasty during the perioperative multimodal analgesia,which can relieve patients ’ postoperative visual analogue scales,and promote the rehabilitation of knee function as far as possible.

关键词： Arthroplasty,Replacement,Knee Analgesia Perioperative Transcutaneous Electrical Nerve Stimulation

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两亲性四硫富瓦烯衍生物的合成及其性质研究

有机化学 2011年第7期31卷 1027-1031页

作者：赵邦屯吴圣江冶保献洛阳师范学院化学化工学院洛阳471022 郑州大学化学系郑州450001

二-(1,3-二硫环戊烯-2-硫酮-4,5-二硫)合锌酸四乙基铵盐(Zincate盐)分别与溴代十四烷和溴代十八烷在乙腈中回流,合成相应的1,3-二硫环戊烯-2-硫酮2a和2b.以亚磷酸三乙酯为偶联剂,其分别和4,5-二氰基乙硫基-1,3-二硫环戊烯-2-酮(3)发生... 详细信息

二-(1,3-二硫环戊烯-2-硫酮-4,5-二硫)合锌酸四乙基铵盐(Zincate盐)分别与溴代十四烷和溴代十八烷在乙腈中回流,合成相应的1,3-二硫环戊烯-2-硫酮2a和2b.以亚磷酸三乙酯为偶联剂,其分别和4,5-二氰基乙硫基-1,3-二硫环戊烯-2-酮(3)发生交叉偶合反应合成四硫富瓦烯(TTF)衍生物4a和4b.在氢氧化铯的存在下,4a和4b分别与2-碘乙氧基乙醇反应生成含羟基的四硫富瓦烯(TTF)衍生物5a和5b.以三乙胺为缚酸剂,其与对甲基苯磺酰氯反应,生成含活化羟基的TTF衍生物6a和6b.在氢氧化钠的存在下,6a和6b分别与巯基噻二唑反应生成含有疏水长链烷烃和亲水醚键连接的噻二唑两亲性TTF衍生物7a～7d,并对其进行了1h NMR,13C NMR,IR,MS的表征以及初步电化学行为和Langmuir-Blodgett膜性能研究.

关键词：两亲性四硫富瓦烯合成电化学 Langmuir—Blodgett膜