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Study of the Assessment Method for N Excretion in Sustainable Heavy Pigs Production

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Study of the Assessment Method for N Excretion in Sustainabl...

An integrated strategy towards the facile synthesis of core-shell SiC-derived carbon@N-doped carbon for high-performance supercapacitors

2011 International Conference on energy and Environment(ICEE 2011)

作者： Kaijun Guo Fenghua Liu Xiaolong Xu Jianqin Xu Ivo Zoccarato College of Animal Science and Technology Beijing University of Agriculture CAU-BUA TCVM Teaching & Research Team College of Veterinary Medicine China Agricultural University Chemical and Herbal drugs for Animal Use Chinese Ministry of Agriculture Dipartimento di Scienze Zootecniche Turin University

Italian heavy pigs, with an average slaughtering body weight of 150-170 kg, are world-wide famous for its Parma ham production. Because the requirement of market diversity, producers are interested in ham production following the procedure of Italian pork industry. However, with ever growing public concern about nitrogen（N） pollution in the environment, it is necessary to determine a suitable method to measure N excretion from heavy pig production. The N retention was calculated by factorial method and compared with estimations of other methods available in literature. The results showed that the N percentage of heavy pigs is 2.43% ± 0.07% on body weight basis and the percentage of N excretion was approximately 69.62% ± 0.20 of N intake. Regarding the N excretion of estimation methods, the proposal of Xiccato et al. was closer to reality of the heavy pig production than other methods and could be used as a standard way to calculate the N excretion. Besides the overall standard, it is opportune to make a N balance sheet for every individual farm under specific conditions. Only in this way, the farmers can realize their deficiencies and will voluntarily follow the Good Management Practice（GMP） indications so as to guarantee a sustainable development of pig production.

关键词： Heavy pigs N excretion Factorial method Assessment methods

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Journal of energy Chemistry 2021年第5期30卷 512-521页

作者： Zhongya Pang Guangshi Li Xingli Zou Chenteng Sun Conghui Hu Wei Tang Li Ji Hsien-Yi Hsu Qian Xu Xionggang Lu State Key Laboratory of Advanced Special Steel&Shanghai Key Laboratory of Advanced Ferrometallurgy&School of materials Science and Engineering Shanghai UniversityShanghai 200444China State Key Laboratory of ASIC and System School of MicroelectronicsFudan UniversityShanghai 200433China School of energy and Environment&Department of materials Science and Engineering City University of Hong KongKowloon Tong 999077Hong KongChina Shenzhen Research Institute of City University of Hong Kong Shenzhen 518057GuangdongChina

Porous active core-shell carbon material with excellent synergistic effect has been regarded as a prospective material for ***,we report an integrated method for the facile synthesis of carbide-derived carbon(CDC)encapsulated with porous N-doped carbon(CDC@NC)towards highperformance ***(PDA)as nitrogen and carbon sources was simply coated on SiC nanospheres to form SiC@PDA,which was then directly transformed into CDC@NC via a onestep molten salt electro-etching/in-situ doping *** synthesized CDC@NC with hierarchically porous structure has a high specific surface area of 1191 m^(2) g^(-1).The CDC core and NC shell are typical amorphous carbon and more ordered N-doped carbon,*** from its unique dual porous structures,the CDC@NC demonstrates high specific capacitances of 255 and 193 F g^(-1) at 0.5 and20 A g^(-1),*** reaction mechanism of the electro-etching/in-situ doping process has also been investigated through experimental characterizations and theoretical density functional theory *** is suggested that the molten salt electro-etching/in-situ doping strategy is promising for the synthesis of active core-shell porous carbon materials with synergistic properties for supercapacitors without the need for additional doping/activation processes.

关键词： Molten salt Electrochemical etching Core-shell structure Porous carbon In-situ nitrogen doping Supercapacitors

MXene based mechanically and electrically enhanced film for triboelectric nanogenerator

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Nano Research 2021年第12期14卷 4833-4840页

作者： Yuyu Gao Guoxu Liu Tianzhao Bu Yaoyao Liu Youchao Qi Yanting Xie Shaohang Xu Weili Deng Weiqing Yang Chi Zhang CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-nano Energy and SensorBeijing Institute of Nanoenergy and Nanosystems Chinese Academy of SciencesBeijing101400China Key Laboratory of Advanced Technologies of materials(Ministry of Education) School of Materials Science and EngineeringSouthwest Jiaotong UniversityChengdu610031China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing100049China Center on Nanoenergy Research School of Physical Science and TechnologyGuangxi UniversityNanning530004China

The development of triboelectric nanogenerator(TENG)technology which can directly convert ambient mechanical energy into electric energy may affect areas from green energy harvesting to emerging wearing ***,the material of triboelectric layer is critical to the mechanical robustness and electrical output characteristics of the ***,a MXene enhanced electret polytetrafluoroethylene(PTFE)film with a high mechanical property and surface charge density is *** MXene/PTFE composite film was synthesized by spraying and annealing *** the doping of MXene,the crystallinity of composite film could be tuned,leading to an enhancement in the tensile property of 450%and reducing the wear volume about 80%in the friction ***,the as-fabricated TENG with this composite film outputs 397 V of open-circuit voltage,21µA of short-circuit current,and 232 nC of transfer charge quantity,which are 4,6,and 6 times higher than that of the TENG made by pure PTFE film,***,this work provides a creative strategy to simultaneously improve the mechanical property and electrical performance of the TENGs,which have great potential in improving device stability under a complex mechanical environment.

关键词： MXene polytetrafluoroethylene(PTFE) mechanically and electrically enhanced triboelectric layer triboelectric nanogenerator

Holographically fabricated, highly reflective nanoporous polymeric distributed Bragg reflectors with red, green,and blue colors [Invited]

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Chinese Optics Letters 2020年第8期18卷 34-39页

作者：蒋皓东蔡文锋李珂成茗 Vineet Kumar 殷震 Davy Gerard 罗丹穆全全刘言军 Department of Electrical and Electronic Engineering Southern University of Science and TechnologyShenzhen 518055China Harbin Institute of Technology Harbin 150001China Light NanomaterialsNanotechnologies(L2n)Universitede Technologie de Troyes&CNRS ERL 7004Troyes 10004France State Key Laboratory of Applied Optics Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033China Key Laboratory of energy Conversion and Storage Technologies(Southern University of Science and Technology) Ministry of EducationShenzhen 518055China

We report holographic fabrication of nanoporous distributed Bragg reflector(DBR) films with periodic nanoscale porosity via a single-prism conuration. The nanoporous DBR films result from the phase separation in a material recipe, which consists of a polymerizable acrylate monomer and nonreactive volatile solvent. By changing the interfering angle of two laser beams, we achieve the nanoporous DBR films with highly reflective red,green, and blue colors. The reflection band of the nanoporous DBR films can be tuned by further filling different liquids into the pores inside the films, resulting in the color change accordingly. Experimental results show that such kinds of nanoporous DBR films could be potentially useful for many applications, such as color filters and refractive index sensors.

关键词： distributed Bragg reflector nanoporous reflection grating holographic fabrication phase separation refractive index sensing

Experimental Study for the Performance of the Solar Distiller

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Journal of energy and Power Engineering 2013年第11期7卷 2045-2053页

作者： Nassim Baba Ahmed Abderrahim Benmoussat material and Environment Research of LAEPO Laboratory Aboubekr BelkaM University of Tlemcen Tlemcen 13000 Algeria

This article describes the experimental results obtained by the solar distiller by specifying the radiative properties of materials, the analysis of various types of losses in the system and the establishment of the energy assessment of the system being the main question to consider. The experiment was undertaken in Tlemcen-Algeria by working out a solar distiller in order to measure the various temperatures of the system. Salt was added to study the negotiable effect of the salinity of water on solar distillation and it is noted that the production of distilled water decreases with salinity. The distiller is forwarded to a constant global solar flow. Experimental results obtained in heat transfer of natural convection in the pure and simultaneous heat and mass transfer, proven that these phenomena are in the boundary layer. This enables people to admit that the existence of a stagnant zone inside of distiller is called the "buffer zones".

关键词：太阳能蒸馏器性能试验传质传热阿尔及利亚辐射特性自然对流蒸馏水系统

Intensity distribution function and statistical properties of fast radio bursts

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Research in Astronomy and Astrophysics 2017年第1期17卷 71-80页

作者： Long-Biao Li Yong-Feng Huang Zhi-Bin Zhang Di Li Bing Li School of Astronomy and Space Science Nanjing University Nanjing 210046 China Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University) Ministry of Education Nanjing210046 China Department of Physics College of Sciences Guizhou University Guiyang 550025 China National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 China Key Laboratory for Radio Astronomy Chinese Academy of Sciences Nanjing 210008 China Institute of High energy Physics Chinese Academy of Sciences Beijing 100049 China

Fast Radio Bursts （FRBs） are intense radio flashes from the sky that are characterized by mil- lisecond durations and Jansky-level flux densities. We carried out a statistical analysis on FRBs that have been discovered. Their mean dispersion measure, after subtracting the contribution from the interstellar medium of our Galaxy, is found to be ~ 660 pc cm-3, supporting their being from a cosmological origin. Their energy released in the radio band spans about two orders of magnitude, with a mean value of ~ 10-39 erg. More interestingly, although the study of FRBs is still in a very early phase, the published collection of FRBs enables us to derive a useful intensity distribution function. For the 16 non-repeating FRBs detected by the Parkes telescope and the Green Bank Telescope, the intensity distribution can be described as dN/dFobs = （4.1± 1.3） × 103 F-obs1.1±0.2 sky-1 d-l, where Fobs is the observed radio obs fluence in units of Jy ms. Here the power-law index is significantly flatter than the expected value of 2.5 for standard candles distributed homogeneously in a flat Euclidean space. Based on this intensity distribution function, the Five-hundred-meter Aperture Spherical radio Telescope （FAST） is predicted to be able to detect about five FRBs for every 1000 h of observation time.

关键词： pulsars general - stars neutron - radio continuum general - intergalactic medium -methods statistical

使用LiCl和CaCl_(2)溶液的内冷型溶液除湿器效率对比和性能分析

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2020年第1期21卷 44-63页

作者： Dong-gen PENG Shun-yi LI Dan-ting LUO Yu-ting FU Xiao-song CHENG Yin LIU School of Civil Engineering and Architecture Nanchang UniversityNanchang 330031China School of energy and Environment Southeast UniversityNanjing 210096China School of Environmental Science and Engineering Huazhong University of Science and TechnologyWuhan 430074China Henan Zhongrui Refrigeration Technology Co. LtdXinzheng 451191China

目的:目前关于内冷型溶液除湿器的研究均基于特定的装置结构和流型,限制了其普遍应用。本文采用基于传热单元数的传热传质数学模型,通过数值模拟研究了各种流型、结构和流体参数的影响。创新点:1.提出一种新的除湿效率定义;2.引入?效率... 详细信息

目的:目前关于内冷型溶液除湿器的研究均基于特定的装置结构和流型,限制了其普遍应用。本文采用基于传热单元数的传热传质数学模型,通过数值模拟研究了各种流型、结构和流体参数的影响。创新点:1.提出一种新的除湿效率定义;2.引入?效率评价内冷型除湿器的性能;3.分析不同流型、结构和流体参数下除湿器除湿效率和?效率;4.研究结论不受特定装置和流体参数的限制,为内冷型除湿器的设计优化提供了建议。方法:1.建立内冷型除湿器的物理和数学模型;2.通过实验数据与模拟数据的对比,验证模型的正确性;3.建立除湿效率和?效率的数学模型;4.通过不同流型、结构和流体参数的模拟数据,分析其对除湿效率和?效率的影响。结论:1.本文提出了一种新的除湿效率定义,解决了内冷型除湿器在某些工况下除湿效率超出0~1范围的问题;溶液入口平衡含湿量根据入口溶液和冷却水的最低温度计算,并且新的除湿效率综合考虑了冷水的代价,可以更好地评价除湿器的除湿性能。2.对于内冷型除湿器,三种空气与溶液间流型的除湿效率和?效率总是逆流最好,叉流其次,顺流最差;溶液与冷水之间的流型对两种效率影响不大,I流型比Ⅱ流型提升5%左右。***溶液的除湿效率高于CaCl2溶液,可以提高60%,但LiCl溶液的?效率低于CaCl2溶液,可降低16%。4.在设计内冷型除湿器时应采用较大的空气与溶液间传热单元数,并建议在其运行过程中使用浓度较高的溶液及入口温度较低的溶液和空气,以达到更高的除湿效率和?效率。

关键词：溶液除湿内冷型除湿器性能对比除湿效率 [火用]效率

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HIRFL的运行报告(英文)

IMP & HIRFL Annual Report 2006年 139-139页

作者：赵红卫 HIRFL team

The statistics of HIRFL operation time from December 21,2005 to December 21,2006 is shown in Table *** 2 summarizes all the ion beam species,beam energy and beam intensity provided by HIRFL in *** 4 620 h beam service time,about 50% is devoted to the HIRFL-CSR commissioning,and 35% beam time is devoted to nuclear physics and material science,and the others for biophyics and ion therapy.

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Multilayer polarization elements and their applications to polarimetric studies in vacuum ultraviolet and soft X-ray regions

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Nuclear Science and Techniques 2008年第4期19卷 193-203页

作者： WATANABE Makoto HATANO Tadashi SAITO Katsuhiko HU Weibing EJIMA Takeo TSURU Toshihide TAKAHASHI Masahiko KIMURA Hiroaki HIRONO Toko WANG Zhangshan CUI Mingqi YAMAMOTO Masaki YANAGIHARA Mihiro Shanghai Dianji University Shanghai 200240 China Institute of Composite materials Shanghai Jiaotong University China and Venture Business Laboratory Saga University Japan Institute of Multidisciplinary Research for Advanced materials Tohoku University Sendai 980-8577 Japan Changchun Institute of Optics Fine Mechanics and Physics Changchun 130033 China Japan Synchrotron Radiation Research Institute SPring-8 Hyogo 679-5198 Japan Institute of Precision Optical Engineering Tongji University Shanghai 200092 China BSRF Institute of High Energy Physics Beijing 100049 China

Multilayer polarization elements and their applications to polarimetric studies in 20～400 eV region are mainly reviewed. General principle of selecting material combinations to get high linear polarizance multilayers of reflection type is given with practical examples,with periodic or non-periodic layer structures depending on the usage. Transmission type is introduced as linear polarizer and phase shifter. Their applications include polarization diagnosis of laboratory optical systems and synchrotron radiation beamlines of linear and circular polarization,magnetic rotation experiments such as Faraday rotation and magnetic Kerr rotation on magnetic films and multilayers,and ellipsometry to measure optical constants of thin films precisely. Polarization analysis of soft X-ray fluorescence using multilayer-coated grating is also mentioned. Finally this review is summarized with outlook of further developments.

关键词： X射线偏振色散核技术