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Potential development of non-synthetic food additives from orange processing by-products-a review

Food Quality and Safety 2021年第1期5卷 1-14页

作者： Erik S.Dassoff Jonathan x.guo Yan Liu Selina C.Wang Yao Olive Li Department of Nutrition&Food Science California State Polytechnic UniversityPomonaCAUSA Department of Chemistry&Biochemistry California State Polytechnic UniversityPomonaCAUSA Department of Food Science&Technology University of CaliforniaDavisDavisCAUSA

Citrus is the largest fruit crop ***,oranges account for 60 per cent of the total,with their main application in juice *** orange juice production,about 50 per cent of the fresh orange weight is transformed into juice,with the remaining 50 per cent comprised of residue(peel,pulp,seeds,orange leaves and whole orange fruits that do not reach the quality requirements).With the resulting tons of orange by-products,there has been an initiative to research possible ways to reutilize and revalorize citrus *** pomace,the by-product from juicing process,is currently used to extract the essential oils for fragrance and flavor,and a majority of the waste is used as cattle feed;however,these applications do not account for all of the waste or capture all of its potential ***,these by-products are put into landfills at the owner's expense,and contribute to global warming through carbon *** the other hand,orange by-products still contain many useful nutraceutical components,such as dietary fiber and phytochemicals,which could be utilized for value-added ingredients and new product *** research approaches in this area include the production of organic fertilizers and biofuels,or the extraction of essential oils,pectins,and antioxidant *** is little information in the literature and in the food industry in terms of utilizing the orange pomace directly or with some simple *** pomace may be used for food product development as a'clean-laber,non-synthetic preservative,which rationalizes this review.

关键词： orange pomace polyphenols flavonoids extraction functional properties non-synthetic preservatives clean-label

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Experimental methods for determination of mechanical behaviors of materials at high temperatures via the split Hopkinson bars

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Acta Mechanica Sinica 2020年第6期36卷 1275-1293,I0003页

作者： Q.B.Dou K.R.Wu T.Suo C.Zhang x.guo Y.Z.guo W.G.guo Y.L.Li School of Aeronautics Northwestern Polytechnical UniversityXi’an710072China Joint International Research Laboratory of Impact Dynamics and its Engineering Application Xi’an710072China Shaanxi Key Laboratory of Impact Dynamics and its Engineering Application Xi’an710072China State Key Laboratory for Strength and Vibration of Mechanical Structures School of AerospaceXi’an Jiaotong UniversityXi’an710049China

Full understanding of the thermomechanical behaviors of materials at high strain rates and high temperatures are of great importance from not only scientific meaning but also practical value in engineering structure design and safety *** efforts have been made for abilities of operation the split Hopkinson bars,the most popular technique for experimental determination of mechanical behaviors of materials over the strain rates from 10^2 to 10^4 s^−1 over the past 70 years,at high temperatures since 1960s.A review of experiment work is presented in this paper to give an overview of the development of experimental techniques at high temperatures based on Hopkinson bar *** principles of the split Hopkinson bar requires the loading bars avoiding temperature gradient or keeping relatively low temperature when performing high temperature *** such as performing temperature gradient corrections,rapid heating or using special designed automatically assembled systems were proposed by researchers to enable the operation of the split Hopkinson bars at temperature as high as ***,to the application of high speed photographic technique for capturing the dynamic deformation process of the specimen in high temperature Hopkinson bar testing,some key issues of eliminating the strong thermal radiation induced lights oversaturation and de-blurring of images due to insufficient exposure at high temperature and high strain rate condition,as well as fabrication of high contrast speckle pattern for high temperature digital image correlation measurement were also *** technique can now enable the split Hopkinson bar testing to be performed at high temperature up to 1873 K under the loading conditions of compression or tension with the in situ observation and full field measurement of deformation as *** paper concludes with summaries of the most important achievements and highlighting of the prospects,trends and remaining challenge

关键词： Mechanical behaviors Split Hopkinson bar High strain rate High temperature

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Kinetic study on NaF-activated pack-aluminizing of pure titanium at 950-1100℃

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Transactions of Nonferrous Metals Society of China 2014年第6期24卷 1959-1968页

作者： H.R.KARIMI ZARCHI M.SOLTANIEH M.R.ABOUTALEBI x.guo Centre of Excellence for High Strength Alloys Technology School of Metallurgy and Materials EngineeringIran University of Science and Technology State Key Laboratory of Solidification Processing Northwestern Polytechnical University

Pure titanium samples were aluminized at 950,1025 and 1100 ℃ for 0-6 h in a pack containing 10%Al＋5%NaF＋85%Al2O3 in mass *** aluminized layers formed on the samples were *** kinetic studies indicated that the diffusion of Al-bearing gases through the pack is the rate-controlling step in this *** activation energy of 161.8 kJ/mol was calculated for this *** addition,the mass gains of the aluminized samples were predicted using the partial pressures of gases in the pack and those adjacent to the samples *** predicted values are in good agreement wim the experimental measurements at 950 ℃ but are higher than those measured at 1025 and 1100 ℃.

关键词： pack aluminizing titanium aluminizing aluminizing kinetics titanium aluminides

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纯钛和镍包埋渗铝的热力学研究(英文)

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中国有色金属学会会刊：英文版 2013年第6期23卷 1838-1846页

分别在敞开和密闭系统中进行纯钛和纯镍的气相渗铝实验。渗铝实验在1100℃下进行3h,包埋粉末含10%Al、5%NH4Cl和85%Al2O3。在敞开条件下,渗铝后纯钛的表面会生成α(Al)固溶体,样品的质量损失达到32.37%。然而,在密闭条件下,纯钛样品的... 详细信息

分别在敞开和密闭系统中进行纯钛和纯镍的气相渗铝实验。渗铝实验在1100℃下进行3h,包埋粉末含10%Al、5%NH4Cl和85%Al2O3。在敞开条件下,渗铝后纯钛的表面会生成α(Al)固溶体,样品的质量损失达到32.37%。然而,在密闭条件下,纯钛样品的表面生成TiAl3层和α(Al)固溶体,没有质量损失。热力学分析表明,在敞开条件下对纯钛渗铝时,会生成钛的氯化物,导致其质量减少。而在密闭条件下,由于生成的氯化物会达到平衡状态而使生成反应停止。相反,无论是在敞开或密闭条件下,纯镍样品都可以进行表面渗铝,不会导致质量损失。在两种状态下,镍的表面都生成了AlNi和Ni3Al相。

关键词：包埋渗铝反应钛镍热力学气相渗铝

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Connexin therapeutics:blocking connexin hemichannel pores is distinct from blocking pannexin channels or gap junctions

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Neural Regeneration Research 2021年第3期16卷 482-488页

作者： Monica L.Acosta Mohd N.Mat Nor Cindy x.guo Odunayo O.Mugisho Frazer P.Coutinho Ilva D.Rupenthal Colin R.Green School of Optometry and Vision Science University of AucklandAucklandNew Zealand Faculty of Medicine Universiti Sultan Zainal AbidinTerengganuMalaysia Department of Ophthalmology University of AucklandAucklandNew Zealand Buchanan Ocular Therapeutics Unit Department of OphthalmologyAucklandNew Zealand New Zealand National Eye Centre University of AucklandAucklandNew Zealand Centre for Brain Research Faculty of Medical and Health SciencesThe University of AucklandAucklandNew Zealand Brain Research New Zealand–Rangahau Roro Aotearoa AucklandNew Zealand

Compounds that block the function of connexin and pannexin protein channels have been suggested to be valuable therapeutics for a range of *** of these compounds are now in clinical trials,but for many of them,the literature is inconclusive about the molecular effect on the tissue,despite evidence of functional *** the different channel types has distinct physiological and pathological implications and this review describes current knowledge of connexin and pannexin protein channels,their function as channels and possible mechanisms of the channel block effect for the latest therapeutic *** summarize the evidence implicating pannexins and connexins in disease,considering their homeostatic versus pathological roles,their contribution to excesive ATP release linked to disease onset and progression.

关键词： connexin gap junction gap19 hemichannel pannexin retina tonabersat

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High-temperature deformation and strain measurement for aircraft materials using digital image correlation

High-temperature deformation and strain measurement for airc...

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The 2015 International Conference on Advanced Materials and Engineering Structural Technology(ICAMEST 2015)

作者： A.P.Feng J.Liang H.Hu x.guo Foshan Polytechnic xi'an Jiaotong University

To slove the problem of thermal deformation measurement of the aircraft materials and\or components at high-temperature,a reliable non-contact detection technique based on the digital image correlation is proposed and implemented.A high-performance experimental system,with an electric current heating device and an active imaging setup,is designed to reproduce transient thermal environments experienced by hypersonic vehicles and to capture the digital images of the test specimen surface at various temperatures.A bandpass filter,a linear polarizing filter and some neutral density filters are used to reduce the intensity and noise in the *** captured images are processed by a seed-point diffusion algorithm and a fractionized facet tracking algorithm we proposed recently to extract the full-field thermal *** results demonstrate that the proposed technique is effective and robust for thermal deformation and strain measurement at the temperatures up to 2600℃,and has great potential in characterizing the thermomechanical behaviour of the aircraft materials and components.

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Digital image correlation for the deformation measurement of high-temperature materials

Digital image correlation for the deformation measurement of...

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创新塑性加工技术，推动智能制造发展——第十五届全国塑性工程学会年会暨第七届全球华人塑性加工技术交流会

作者： Z.Z.Tang H.Hu J.Liang x.guo xI'AN xINTUO 3D OPTICAL MEASUREMENT TECHNOLOGY CO. LTD. xi'an Jiaotong University

To slove the problem of thermal deformation measurement of the aircraft materials and\or components at high-temperature, a non-contact measurement method based on the digital image correlation is proposed and implemented. A high-performance experimental system, with an electric current heating device and an active imaging setup, is designed to reproduce the transient thermal environments experienced by hypersonic vehicles and to capture the digital images of the test specimen surface at various temperatures. A bandpass filter, a linear polarizing filter and some neutral density filters are used to reduce the intensity and noise in the images. The captured images are processed by a seed-point diffusion algorithm and a fractionized facet tracking algorithm we proposed recently to extract the full-field thermal deformation. Experimental results demonstrate that the proposed technique is effective and robust for thermal deformation and strain measurement at the temperatures up to 2600℃, and has great potential in characterizing the thermo-mechanical behaviour of the aircraft materials and components.

关键词： Digital image correlation high-temperature deformation

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Hydrogen production by biomass gasification in supercritical water in a fluidized bed reactor

Hydrogen production by biomass gasification in supercritical...

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第九届全国氢能学术会议

作者： Y.J.Lu,H.Jin,L.J.guo,x.M.Zhang,C.Q.Cao,x.guo xi''an Jiaotong University,China

＜正＞Biomass has always been a major source of energy for mankind,and it contributes about 10-14%of the world’s energy supply ***,a considerable portion of biomass wastes is wet biomass containing up to 95%and for classical gasification or liquefaction processes,this biomass has to be subjected to preliminary *** avoid this high drying

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Influences of nanotwin volume fraction on the ballistic performance of coarse-grained metals

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Theoretical & Applied Mechanics Letters 2017年第5期7卷 265-268页

作者： Q.D.Ouyang G.J.Weng A.K.Soh x.guo School of Mechanical Engineering Tianjin UniversityTianfin 300072China Tianjin Key Laboratory of Nonlinear Dynamics and Control Tianjin 300072China Department of Mechanical and Aerospace Engineering Rutgers UniversityNew BrunswickNJ 08903USA School of Engineering Monash University MalaysiaBandar SunwaySalangorMalaysia

Coarse-grained（CG） metals strengthened by nanotwinned（NT） regions possess high strength and good ductility. As such, they are very suitable for applications in bullet-proof targets. Here, a numerical model based on the conventional theory of strain gradient plasticity and the Johnson–Cook failure criterion is employed to study the influences of volume fraction of NT regions on their ballistic *** results show that in general a relatively small twin spacing（4–10 nm） and a moderate volume fraction（7%–20%） will lead to excellent limit velocity and that the influences of volume fraction on limit displacement change with the category of impact processes.

关键词： Nanotwin Ballistic performance Volume fraction Limit velocity Limit displacement

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Hydrogen production by biomass gasification in supercritical water with different Ni catalysts

Hydrogen production by biomass gasification in supercritical...

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第九届全国氢能学术会议

作者： R.Zhang,L.J.guo,x.guo,J.R.Yin,Y.J.Lu xi''an Jiaotong University,China

＜正＞Hydrogen can be used for a clean power source of fuel *** biomass is a renewable and carbon neutral resource,hydrogen production from biomass has become attractive with the global warming *** mixed with sodium carboxymethlcellulose was gasified in *** effect of carrier on catalytic performance of the nickel for straw gasified in

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