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Bioplastic production in terms of life cycle assessment:A state-of-theart review

Environmental Science and Ecotechnology 2023年第3期15卷 14-34页

作者： Sameh Samir Ali Esraa A.Abdelkarim Tamer Elsamahy Rania Al-Tohamy fanghua Li Michael Kornaros Antonio Zuorro Daochen Zhu Jianzhong Sun Biofuels Institute School of the Environment and Safety EngineeringJiangsu UniversityZhenjiang212013PR China Botany Department Faculty of ScienceTanta UniversityTanta31527Egypt State Key Laboratory of Urban Water Resource and Environment School of EnvironmentHarbin Institute of TechnologyHarbinHeilongjiang Province150090China Laboratory of Biochemical Engineering&Environmental Technology(LBEET) Department of Chemical EngineeringUniversity of Patras26504PatrasGreece Department of Chemical Engineering Materials and EnvironmentSapienza University00184RomeItaly

The current transition to sustainability and the circular economy can be viewed as a socio-technical response to environmental impacts and the need to enhance the overall performance of the linear production and consumption *** concept of biowaste refineries as a feasible alternative to petroleum refineries has gained *** has become an important raw material source for developing bioproducts and ***,effective environmental biowaste management systems for the production of bioproducts and biofuels are crucial and can be employed as pillars of a circular ***,typically plastics manufactured from bio-based polymers,stand to contribute to more sustainable commercial plastic life cycles as part of a circular economy in which virgin polymers are made from renewable or recycled raw *** frameworks and strategies are utilized to model and illustrate additional patterns in fossil fuel and bioplastic feedstock prices for various governments'long-term *** review paper highlights the harmful impacts of fossil-based plastic on the environment and human health,as well as the mass need for eco-friendly alternatives such as biodegradable *** new types of bioplastics derived from renewable resources(e.g.,biowastes,agricultural wastes,or microalgae)and choosing the appropriate end-of-life option(e.g.,anaerobic digestion)may be the right direction to ensure the sustainability of bioplastic *** regulation and financial incentives are still required to scale from niche polymers to large-scale bioplastic market applications with a truly sustainable impact.

关键词： Biowaste Bioeconomy Bioplastic Life cycle assessment Biofuel

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An Anti-multipath Frequency Hopped Communication Technique in Shallow-water Acoustic Channels

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High Technology Letters 2003年第2期9卷 17-20页

作者：许肖梅 Xu fanghua Chen Dongsheng Department Of Oceanography Xiamen University Xiamen 361005 P.R.China

This paper introduces a frequency-hopped (FH) communication system to anti-intersymbol interferences (ISI) caused by the multipath propagation in shallow-water acoustic channels, and uses high-speed digital signal processor (DSP) and serial ADC (MAX121) chip to demodulate received signal efficiently based Fast Fourier Transform (FFT) algorithm. The field experimental results show: a data rate of 1Kbit/s with the bit error rates on the order of 10 -4 is demonstrated at 2000 m in the shallow-water acoustic channel of Xiamen harbor, and the key techniques of the system is analyzed in the paper.

关键词： shallow-water acoustic channel frequency hopped Anti-multipath

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Simulation of CO_2 variations at Chinese background atmospheric monitoring stations between 2000 and 2009: Applying a CarbonTracker model

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Chinese Science Bulletin 2013年第32期58卷 3986-3993页

作者： CHENG YanLi AN XingQin YUN fanghua ZHOU LingXi LIU LiXin FANG shuangXi XU Lin Key Laboratory for Atmospheric Chemistry of China Meteorological Administration Research Institute of Atmospheric Composition of Chinese Academy of Meteorological Sciences School of Environmental Science and Engineering Nanjing University of Information Science & Technology

We carried out a downscaling treatment over China using the CarbonTracker numerical model,which was applied using double grid nesting technology(3°×2°over the whole globe,1°×1°over China),simulating and analyzing atmospheric CO2concentrations over 10 recent years(2000–2009).The simulation results agreed very well with observed data from four background atmospheric monitoring stations in China(The periods for which the simulation results and observed values be compared were January2000 to December 2009 for the WLG station and June 2006 to December 2009 for the SDZ,LFS,and LAN stations),giving correlation coefficients of>*** high-resolution simulation data correlated slightly better than the low resolution simulation data with the observed data for three of the regions’atmospheric background *** analysis of the annual,seasonal CO2concentration variations at the background stations showed that the CO2concentration increased each year over the study period,with an average annual increase of more than 5%,and annual increases of more than 7%at the Shangdianzi and Lin’an *** CO2variations were greater at the Longfengshan station than at the Shangdianzi or Lin’an ***,the CO2concentrations were higher at the Shangdianzi and Lin’an stations because they are greatly affected by human activities in the Jingjinji and Changjiang Delta economic *** distribution in CO2concentrations and fluxes were higher in eastern than in western China.

关键词：二氧化碳浓度模拟数据中国西部大气监测数值模型追踪监测站 CO2浓度

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Selective substitution induced anomalous phonon stiffening within quasi-one-dimensional P–P chains in SiP2

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Nano Research 2023年第1期16卷 1107-1114页

作者： Xueting Dai Feng Qin Caiyu Qiu Ling Zhou Junwei Huang fanghua Cheng Xiangyu Bi Caorong Zhang Zeya Li Ming Tang Shengqiang Wu Xiaoxu Zhao Yangfan Lu Huiyang Gou Hongtao Yuan National Laboratory of Solid State Microstructures Jiangsu Key Laboratory of Artificial Functional MaterialsCollege of Engineering and Applied Sciencesand Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210000China School of Materials Science and Engineering Peking UniversityBeijing 100871China College of Materials Science and Engineering National Engineering Research Center for Magnesium AlloysChongqing UniversityChongqing 400030China Center for High Pressure Science and Technology Advanced Research Beijing 100094China

Light-matter interactions in low-dimensional quantum-confined structures can dominate the optical properties of the materials and lead to optoelectronic *** anisotropic layered silicon diphosphide(SiP2)crystal,the embedded quasi-onedimensional(1D)phosphorus–phosphorus(P–P)chains directly result in an unconventional quasi-1D excitonic state,and a special phonon mode vibrating along the P–P chains,establishing a unique 1D quantum-confined *** SiP2 with the homologous element serves as an effective way to study the properties of these excitons and phonons associated with the quasi-1D P–P chains,as well as the strong interaction between these ***,the experimental observation and the related optical spectral understanding of SiP2 with isoelectronic dopants remain ***,with the photoluminescence and Raman spectroscopy measurements,we demonstrate the redshift of the confined excitonic peak and the stiffening of the phonon vibration mode■of a series of Si(P1−xAsx)2 alloys with increasing arsenic(As)*** anomalous stiffening of■is attributed to the selective substitution of As atoms for P atoms within the P–P chains,which is confirmed via our scanning transmission electron microscopy *** optical spectra evolutions with selective substitution pave a new way to understand the 1D quantum confinement in semiconductors,offering opportunities to explore quasi-1D characteristics in SiP2 and the resulting photonic device application.

关键词： SiP2 quasi-one-dimensional structure Raman photoluminescence phosphide

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用于混合储能系统平抑功率波动的小波变换方法

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电力自动化设备 2021年第3期41卷 100-104,128页

作者：程龙张方华南京航空航天大学自动化学院江苏南京211106

由锂电池和超级电容组成的混合储能系统(HESS)被广泛用于平抑电力系统中的功率波动,将低频功率分量分配给锂电池发挥其能量优势,将高频功率分量分配给超级电容发挥其功率优势。小波变换具有多尺度分解能力,能够根据储能介质特性更加合... 详细信息

由锂电池和超级电容组成的混合储能系统(HESS)被广泛用于平抑电力系统中的功率波动,将低频功率分量分配给锂电池发挥其能量优势,将高频功率分量分配给超级电容发挥其功率优势。小波变换具有多尺度分解能力,能够根据储能介质特性更加合理地分配波动功率。基于储能介质的等效时间,提出了量化储能介质频率特性的方法。小波基的选取和分解层数的优化是小波变换的2个关键因素,直接影响波动功率的分解结果。采用互相关系数之和兼顾HESS的高、低频功率分量,选取合适的小波基。建立了储能介质频率特性与小波变换分解层数的关系,用于优化分解层数。仿真结果表明所提方法能够充分发挥储能介质的自身优势。

关键词：混合储能系统功率波动频率特性小波变换分解层数

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Base-Mediated Decomposition of Amide-Substituted Furfuryl Tosylhydrazones:Synthesis and Cytotoxic Activities of Enynyl-Ketoamides

Base-Mediated Decomposition of Amide-Substituted Furfuryl To...

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中国化学会第九届全国有机化学学术会议

作者： fanghua Ji Biaolin Yin School of Chemistry and Chemical Engineering South China University of Technology

＜正＞Photolysis and pyrolysis of furfuryl diazomethanes have been reported to produce enynones,presumably via furfuryl ***,only a few simple furfuryl diazomethanes have been used as substrates,exact yields have not been reported,and the scope of the reactions has not been thoroughly ***,the protocols for enynone production require tedious manipulations and exceedingly harsh conditions,resulting in partial decomposition of the formed

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Production Method for Paraffin Section of Invasive Species of Bemisia tabaci

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Plant Diseases and Pests 2012年第2期3卷 46-48页

作者： Qiyun XU fanghua CHAI Xincheng AN Shichou HAN Guangdong Entomological Institute South China Botanical Garden Chinese Academy of Sciences

[Objective] The purpose was to introduce a preparation method for paraffin section of Bemisia tabaci, so as to lay the foundation for the studies on changes of organizational structure of B. tabaci. [ Method] The technique of paraffin section and the method of H-E staining were adopted to study the organizational structure of B. tabaci. The slices were examined and photographed under fluorescence microscope. [ Result] The coloring of H-E staining cells was good. Under 400 x conditions, the fat body, compound eyes, nucleus and muscle of B. tabaci were clear. [ Conclusion] The production method for paraffin section of B. tabaci was reliable, and the quality of slices was high.

关键词： Invasive species Bemisia tabaci Paraffin section H-E staining

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EFFECT OF γ-IRRADIATION ON CuZnAl SHAPE MEMORY ALLOY

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Acta Metallurgica Sinica(English Letters) 1992年第5期5卷 345-348页

作者： ZHANG Guilin XU Feng LIU Wenhong YU fanghua Shanghai Institute of Nuclear Research,Academia Sinica,Shanghai,ChinaWANG Jingcheng SHAO Zichang Shanghai Iron and Steel Research Institute,Shanghai,China Shanghai Inst of Nuclear Research Acad Sinica Shanghai China

Effect of γ-irradiation on the shape memory alloy CuZnAl has been studied by the techniques of TEM,positron annihilation etc..The martensitic transformation temperature of the alloy increases obviously ofter γ-irradiation at a dose of 2×10~7 Gy but not for a dose of 1× 10~7 *** shape memory effect in both irradiated alloys remains unaffected.

关键词： γ-irradiation shape memory alloy martensitic transformation temperature Cu-Zn-A1 alloy

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Exponential Growth Solutions of Elliptic Equations

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Acta Mathematica Sinica,English Series 1999年第4期15卷 525-534页

作者： Fengbo Hang fanghua Lin Courant Institute,251 Mercer Street,New York,NY 10012,U S A E-mail:fengbo@cims.nyu.edu linf@cims.nyu.edu Courant Institute New York USA

We show that for a class of second order divergence form elliptic equations on an infinite strip with the Dirichlet boundary condition,the space of fixed order exponential growth solutions is of finite *** optimal estimation of the dimension is *** also show that the finiteness property may not be true if one drops some of the conditions we make in our result.

关键词： Elliptic equations Exponential growth function Poincarés inequality Mean value inequality

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Influence of a Southern Shift of the ITCZ from Quick Scatterometer Data on the Pacific North Equatorial Countercurrent

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Advances in Atmospheric Sciences 2012年第6期29卷 1292-1304页

作者：吴方华林鹏飞刘海龙 Division of Climate System Modeling National Climate Center State Key of Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric PhysicsChinese Academy of Sciences State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics Institute of Atmospheric PhysicsChinese Academy of Sciences

By analyzing the climatologically averaged wind stress during 2000-2007, it is found that the easterly wind stress in the northern tropical Pacific Ocean from Quick Scatterometer （QSCAT） data was stronger than those from Tropical Atmosphere Ocean （TAO） data and from National Centers for Environmental Prediction/National Center for Atmospheric Research （NCEP/NCAR） reanalysis I. As a result, the Intertropical Convergence Zone （ITCZ） in the Pacific Ocean is more southward in the QSCAT data than in the NCEP/NCAR data. Relative to the NCEP wind led to negative anomaly of wind stress curl north of the southern shift of the ITCZ in the QSCAT data a latitude of 6°N. The negative anomaly results in downward Ekman pumping in the central Pacific. The excessive local strong easterly wind also contributes to the downward Ekman pumping. This downward Ekman pumping suppresses the thermocline ridge, reduces the meridional thermocline slope and weakens the North Equatorial Countereurrent （NECC）. These effects were confirmed by numerical experiments using two independent ocean general circulation models （OGCMs）. Furthermore, the excessive equatorial easterly wind stress was also found to contribute to the weaker NECC in the OGCMs. A comparison between the simulations and observation data indicates that the stronger zonal wind stress and its southern shift of QSCAT data in the ITCZ region yield the maximum strength of the simulated NECC only 33% of the magnitude derived from observation data and even led to a ＂missing＂ NECC in the western Pacific.

关键词： QuikSCAT wind stress NECC ocean model ITCZ

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