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Differential responses of weaned piglets to supplemental porcine or chicken plasma in diets without inclusion of antibiotics and zinc oxide

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Animal Nutrition 2021年第4期7卷 1173-1181页

作者： Li Zhe lunxiang yang Sen Lin Fangyuan Chen Peng Wang Lourens Heres Yong Zhuo Jiayong Tang Yan Lin Shengyu Xu Xiaoling Zhang Xuemei Jiang Lingjie Huang Ruinan Zhang Lianqiang Che Gang Tian Bin Feng De Wu Zhengfeng Fang Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education Animal Nutrition InstituteSichuan Agricultural University211 Huimin RoadWenjiang DistrictChengdu611130China Sericultural&Agri-Food Research Institute Guangdong Academy of Agricultural Sciences 133 Dongguanzhuang Yiheng RoadGuangzhou510610China Sonac(China)Biology Co. LtdShanghai1668 Xiuyan RoadPudong New AreaShanghai200120China

This study was conducted to investigate the effects of spray-dried porcine plasma protein(SDPP)or spray-dried chicken plasma protein(SDCP)supplementation in diets without the inclusion of antibiotics and zinc oxide(ZnO)on growth performance,fecal score,and fecal microbiota in early-weaned piglets.A total of 192 healthy weaning piglets(Duroc×Landrace×Yorkshire,21 d old)were blocked by BW(6.53±0.60 kg)and randomly assigned to 4 dietary treatments:negative control(NC,basal diet),positive control(PC),basal diet+ZnO at 2 g/kg and antibiotics at 0.8 g/kg,SDPP(containing 5%SDPP),and SDCP(containing 5%SDCP).The experiment lasted 14 *** SDPP group had higher(P<0.05)final BW,average daily gain and average daily feed intake than the NC and SDCP *** percentage of piglets with fecal scores at 2 or≥2 was higher(P<0.05)in the NC and SDCP groups than in the PC group.A decreased(P<0.05)bacterial alpha diversity and Bacteroidetes abundance,but increased(P<0.05)Firmicutes abundance were observed in the PC and SDPP groups when compared to the NC *** relative abundance of Lactobacillus was higher(P<0.05)in the SDPP than in the SDCP group,and that of Streptococcus was higher(P<0.01)in the PC and SDPP groups than in the NC *** PC group also had higher(P<0.01)Faecalibacterium abundance than the NC and SDCP ***,the SDCP group had higher(P<0.05)serum urea nitrogen than those fed other diets,and lower(P<0.10)shortchain fatty acids to branched-chain fatty acids ratio than the PC and SDPP ***,SDPP was a promising animal protein for piglets in increasing feed intake,modifying gut microbiota profile,reducing gut protein fermentation and alleviating diarrhea frequency,thus promoting growth performance,under the conditions with limited in-feed utilization of antibiotics and ZnO.

关键词： Plasma protein Weaned piglet Growth performance Microbial community

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The lightning activities in super typhoons over the Northwest Pacific

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Science China Earth Sciences 2010年第8期53卷 1241-1248页

作者： PAN lunxiang QIE XiuShu LIU DongXia WANG DongFang yang Jing LAGEO Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Graduate University of Chinese Academy of Sciences Beijing 100049China

The spatial and temporal characteristics of lightning activities have been studied in seven super typhoons from 2005 to 2008 over the Northwest Pacific, using data from the World Wide Lightning Location Network (WWLLN). The results indicated that there were three distinct lightning flash regions in mature typhoon, a significant maximum in the eyewall regions (20-80 km from the center), a minimum from 80-200 km, and a strong maximum in the outer rainbands (out of 200 km from the center). The lightning flashes in the outer rainbands were much more than those in the inner rainbands, and less than 1% of flashes occurred within 100 km of the center. Each typhoon produced eyewall lightning outbreak during the periods of its intensification, usually several hours prior to its maximum intensity, indicating that lightning activity might be used as a proxy of intensification of super typhoon. Little lightning occurred near the center after landing of the typhoon.

关键词： super typhoon lightning WWLLN the Northwest Pacific

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Study of Cracking Mechanism and Wear Resistance in Laser Cladding Coating of Ni-based Alloy

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Chinese Journal of Mechanical Engineering 2021年第5期34卷 259-272页

作者： Zhenglei Yu lunxiang Li Deqiang Zhang Guangfeng Shi Guang yang Zezhou Xu Zhihui Zhang Key Lab of Bionic Engineering Ministry of EducationJilin UniversityChangchun 130022China State Key Laboratory of Automotive Simulation and Control Jilin UniversityChangchun 130022China College of Mechanical and Electric Engineering Changchun University of Science and TechnologyChangchun 130022China College of Mechanical Engineering and Automation Liaoning University of TechnologyJinzhou 121001China Key Laboratory of Fundamental Science for National Defense of Aeronautical Digital Manufacturing Process Shenyang Aerospace UniversityShenyang 110136China

Nickel-based alloy coatings were widely used for the remanufacturing of dies and moulds by laser cladding,but the crack sensitivity would be increase due to the higher strength and hardness,which reduced the wear resistance of Ni-based *** this paper,Ni-based coatings with the addition of a plastic phase(an austenitic stainless net)were prepared using laser cladding technology,and the CeO_(2)was added in cladding *** cracking mechanism,microhardness,microstructure,phase composition,and wear properties were *** relationship between thermal stress and the elastic and plastic fracture had been developed from the standpoint of fracture mechan-ics and thermal elastic fracture *** fracture criterion of the nickel-based coating was obtained,and the study has shown that the crack sensitivity could be reduced by decreasing the thermal expansion coefficientΔα.Thus,a new method was proposed,which the stainless steel nets were prefabricated on the *** was found that the number of cracks reduced significantly with the addition of stainless steel *** the stainless steel net with 14 mesh was added in Ni-based coatings,the average microhardness of nickel composite coating was 565 HV_(0.2),which was 2.6 times higher than that of the 45 steel *** the rare earth oxide 4 wt.%CeO_(2)and stainless steel net were added in the Ni-based coating reducing the microhardness(the average microhardness is 425 HV_(0.2)),the wear resistance of it improved *** wear volume of Ni-based composite coating was 0.56×10^(−5) mm^(3)·N^(−1)·m^(−1),which was 85.1%lower than that of 45 *** experiment results have shown that the Nickel-based composite coating is equipped with low crack sensitivity and high abrasive resistance with austenitic stainless net and the rare earth oxide 4 wt.%*** research offers an efficient solution to produce components with low crack susceptibility and high wear-resistance coatings fabricated

关键词： Laser cladding Wear resistance Crack sensitivity Stainless steel net Rare earth oxide

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An In-Situ MRI Method for Quantifying Temperature Changes during Crystal Hydrate Growths in Porous Medium

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Journal of Thermal Science 2022年第5期31卷 1542-1550页

作者： ZHANG lunxiang SUN Mingrui WANG Tian yang Lei ZHANG Xiaotong ZHAO Jiafei SONG Yongchen Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education School of Energy and Power EngineeringDalian University of TechnologyDalian116024China Interdisciplinary Institute of Neuroscience and Technology Zhejiang UniversityHangzhou310029China

Given the complexity of the thermo-hydro-chemically coupled phase transition process of hydrates,real-time in-situ observations are *** maps are particularly essential in analyzing the heat transfer process during the growth and dissociation of crystal *** this study,we present the temporally and spatially resolved thermometry of the formation of tetrahydrofuran hydrates based on the temperature dependence of the chemical shift of the water *** of temperature changes were synchronously obtained using a 9.4 T^(1)H magnetic resonance imaging(MRI)system to predict the saturation level of the aqueous solution,phases of the solid hydrates,and the positive temperature anomaly of the exothermic *** was observed that variations in the MRI signal decreased while the temperature rise differed significantly in space and *** results predicted in this study could have significant implications in optimizing the phase transition process of gas hydrates.

关键词： hydrate phase transition heat transfer porous medium temperature mapping magnetic resonance imaging thermometry thermodynamics and molecular-scale phenomena

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Forced Convection Heat Transfer in Porous Structure: Effect of Morphology on Pressure Drop and Heat Transfer Coefficient

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Journal of Thermal Science 2021年第2期30卷 363-393页

作者： ZHAO Jiafei SUN Mingrui ZHANG lunxiang HU Chengzhi TANG Dawei yang Lei SONG Yongchen Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education Dalian University of TechnologyDalian 116023China

A light-weight structure with sufficient mechanical strength and heat transfer performance is increasingly required for some thermal management *** porous structure with the skeleton supporting the ambient stress and the pores holding the flowing fluid is considered very promising,attracting significant scientific and industrial interest over the past few ***,due to complicated morphology of the porous matrices and thereby various performance of the pressure drop and heat transfer coefficients (HTC),the comprehensive comparison and evaluation between different structures are largely *** this work,recent researches on the efforts of forced convection heat transfer in light-weight porous structure are reviewed;special interest is placed in the open-cell foam,lattice-frame,structured packed bed,and wire-woven *** experimental apparatus,morphological of the porous structures,effect of morphology on pressure drop and HTC,and further applications are *** new method which measure morphology accurately should be paid more attention to develop more accuracy ***,the most research focused on low Reynolds number and existing structure,while very few researchers investigated the property of forced convection heat transfer in high velocity region and developed new porous structure.

关键词： forced convection heat transfer heat transfer coefficient pressure drop morphological characteristics porous structure

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Lightning Activity and Its Relation to the Intensity of Typhoons over the Northwest Pacific Ocean

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Advances in Atmospheric Sciences 2014年第3期31卷 581-592页

作者： PAN lunxiang QIE Xiushu WANG Dongfang Key Laboratory of the Middle Atmosphere and Global Environment Observation Institute of Atmospheric Physics Chinese Academy of Sciences Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science & Technology

ABSTRACT Data from the World Wide Lightning Location Network （WWLLN） were used to analyze the lightning activity and the relationship between maximum sustained wind and lightning rate in 69 tropical cyclones over the Northwest Pacific Ocean from 2005 to 2009. The minimum lightning density was observed in the category 2 typhoon Kong-Rey （2007）, with a value of only 1.15 d-1 （100 kin）-2. The maximum lightning density occurred in the category 2 typhoon Mitag （2007）, with a value of 510.42 d-1 （100 km）-2. The average lightning density decreased with radius from the typhoon center in both weak （categories 1-3） and super （categories 4-5） typhoons. The average lightning density in the inner core of super typhoons was more than twice as large as that for weak typhoons. Both groups of typhoons showed a near-monotonic decrease in lightning density with radius. Results also showed that lightning activity was more active in typhoons that made landfall than in those that did not. The mean correlation coefficient between the accumulated flashes within a 600-kin radius and the maximum wind speed in the weak typhoons and super typhoons was 0.81 and 0.74, respectively. For more than 78% （56%） of the super （weak） typhoons, the lightning activity peaked before the maximum sustained wind speed, with the most common leading time being 30 （60） h. The results suggest that, for the Northwest Pacific Ocean, lightning activity might be used as a measurement of the intensification of typhoons.

关键词： lightning typhoon intensity WWLLN

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Novel Small Four-armed Molecules with Triphenylamine-bridged Structure for Organic Solar Cells Featuring High Open-circuit Voltage

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Chemical Research in Chinese Universities 2019年第6期35卷 1032-1039页

作者： HE Xiaodong ZHU Jianling YIN lunxiang XIE Bao LI Kechang LI Yanqin School of Chemical Engineering Dalian University of TechmologyDalian 116024P.R.China College of Chemistry Jilin UniversityChangchun 130012P.R.China

In view of few attention on star-shaped molecules containing triphenylamine(TPA)unit asπ-linker,a series of small four-armed molecules,consisting of octyloxy-substituted 2,1,3-benzothiadiazole(DOBT)or 4-octyl-2-thienyl functionalized DOBT as the core,TPA asπ-bridge and 4-methylphenyl or 4-methoxyphenyl groups as terminal units,was designed and *** effects ofπbridges and substitute groups on molecular photoe-lectric performance and photovoltaic performance were fully *** the help of the additional thiophene-linkers incorporation,3-octylthienyl substituted molecule with end-capping 4-methylphenyl(T-BTTPAM)and 3-octylthienyl substituted molecule with end-capping 4-methoxyphenyl(T-BTTPAOM)showed stronger and broader absorption,as well as higher charge mobilities compared to the molecules without thiophene-linkers(BTTPAM and BTTPAOM).Additionally,changing substitute groups from methyl to methoxy helped BTTPAOM and T-BTTPAOM achieve better absorption properties than BTTPAM and T-BTTPAM,*** paired with PC61BM as the electron acceptor to fabricate solution-processed photovoltaic devices,the four materials gave high open-circuit voltage(Voc)values over 0.90 *** results demonstrate that our materials are promising candidates as donor materials for organic solar cells(OSCs),and further device optimization is in progress in our laboratory.

关键词： Triphenylamine Four-armed structure High open-circuit voltage Organic solar cell Small-molecule donor

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Design,synthesis and properties of novel organic small molecule photovoltaic materials based on diketopyrrolopyrrole-fluorene

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分子科学学报 2024年第3期40卷 217-225页

作者： WANG Xu YIN lunxiang LI Yanqin School of Chemistry Dalian University of TechnologyDalian 116024China

Two novel organic small molecule donor materials(FLU),TDPP and(DFLU)_(2)TDPP based on diketopyrrolopyrrole-fluorene were designed and synthesized *** D-D-π-A-π-D-D type molecule(DFLU)_(2)TDPP was constructed based on the D-π-A-π-D type molecule(FLU)_(2)TDPP by a backbone extension *** optical absorption,electrochemistry and photovoltaic properties of the two novel materials were investigated in ***(FLU)_(2)TDPP and(DFLU)_(2)TDPP show narrow energy gaps of1.71 and 1.64 eV,*** to(FLU)_(2)TDPP,the photovoltaic device based on(DFLU)_(2)TDPP/PC_(71)BM exhibited a higher power conversion efficiency of 2.27%due to its excellent optical absorption,narrow band gap and balanced carrier *** study indicates that skeleton extension strategy is an effective strategy to broaden the molecular absorption range and improve device performance.

关键词： organic photovoltaic material organic small molecule fluorene diketopyrrolopyrrole skeleton extension

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水合物法处理实际复杂废水及高盐废水

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化工进展 2022年第12期41卷 6672-6679页

作者：孙汇莲孙灵杰赵杨孙翔张伦祥大连理工大学海洋能源利用与节能教育部重点实验室辽宁大连116024

针对复杂废水和高盐废水的处理是目前废水处理领域的难点,常规废水处理技术具有操作复杂、能耗高等问题。本文提出了一种基于水合物处理实际复杂废水及高盐废水的新方法,通过测定水合物分解水中污染物浓度,证实了该技术的可行性。实验... 详细信息

针对复杂废水和高盐废水的处理是目前废水处理领域的难点,常规废水处理技术具有操作复杂、能耗高等问题。本文提出了一种基于水合物处理实际复杂废水及高盐废水的新方法,通过测定水合物分解水中污染物浓度,证实了该技术的可行性。实验中结合中国石化镇海炼化分公司的石油炼化废水和大连市水文局的高浓度实验室废水,在常压、275.15K下进行实验,通过测量水合物法废水处理的脱除效率、产水率及富集因子,评估R141b水合物对废水的处理效果。测定废水处理前后的电导率、总有机碳(TOC)及离子浓度反映对不同种类污染物的去除能力。采用真空抽滤结合离心分离的方法作为后处理方法,提高废水中污染物的脱除效率。结果表明,水合物法废水处理技术可同时去除废水中的无机盐及有机污染物,各污染物的脱除效率可达75%以上,产水量可达78.9%,对高浓度的实验室废水中的铜离子脱除效率达到90.8%。

关键词：水合物脱盐废水 R141b 高浓度

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心包积液381例病因及误诊分析

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重庆医学 2011年第7期40卷 670-671页

作者：庞伦祥广西中医学院附属瑞康医院心内科广西南宁530011

目的分析心包积液病因变化及误诊原因。方法对1990~2009年收治的381例心包积液患者的临床资料进行回顾性分析。结果心包积液病因依次为肿瘤性占21.5%、结核性占17.3%、心力衰竭性占13.6%、尿毒症性占8.9%、非特异性占8.1%、甲状腺功能... 详细信息

目的分析心包积液病因变化及误诊原因。方法对1990~2009年收治的381例心包积液患者的临床资料进行回顾性分析。结果心包积液病因依次为肿瘤性占21.5%、结核性占17.3%、心力衰竭性占13.6%、尿毒症性占8.9%、非特异性占8.1%、甲状腺功能减退性占7.8%,其他各种原因合计占22.6%。结核性心包积液由10年前22.5%下降为13.0%,而肿瘤性心包积液则由10年前13.3%上升为28.4%（P〈0.05）。误诊32例。结论不同时期心包积液病因构成不同,肿瘤成为当前心包积液的首位病因。

关键词：心包积液误诊病因分析

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