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The effect of ammonia on soot formation in ethylene diffusion flames

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Science China(Technological Sciences) 2023年第12期66卷 3422-3438页

作者： WANG QianLong yan zhiwen LI ChaoMin CUI yanQing WEN MingSheng LIU HaiFeng YAO MingFa State Key Laboratory of Engines Tianjin UniversityTianjin 300072China

This paper originally investigates the effect of NH_(3) dilution on soot formation when NH_(3) is gradually added into the fuel stream in an ethylene laminar diffusion flame stabilized on a Santoro *** variations of flame diameter and two flame heights,i.e.,mixture-strength flame height and visible flame height are carefully documented and ***,local soot volume fraction(SVF)and soot temperature fields are simultaneously measured by compact-modulated absorption and emission technique,and the corresponding measurement random errors are also provided by the error propagation calculations for the first *** the reported measurement random errors of SVF and soot temperature fields are estimated within the range of±0.07–±0.08 ppm and±40–±91 K,*** an original database,the concomitantly measured SVF and soot temperature distributions are provided as high-fidelity datasets for refining soot formation model that is overrode by NH_(3).In addition,the flame cross-section average SVF F_(soot)(z)is calculated for every NH_(3) diluted flame,and the relative contributions of NH_(3) dilution and chemical effect are quantitatively assessed in terms of F_(max)-X_(NH_(3))*** is found that when X_(NH_(3))30%,the chemical effect and dilution effect of ammonia are gradually ***,through modeling of the soot formation rate V in the flames,the relative contributions of chemical effect,dilution effect and thermal effect of NH_(3)are further novelty discriminated within the X_(NH_(3))from 0 to 46%and it is shown that NH_(3) chemical effect plays the dominate role in soot suppression,then the dilution effect and the thermal one at the least.

关键词： The effect of ammonia on soot formation in ethylene diffusion flames

The influence of reduced graphene oxide on stem cells:a perspective in peripheral nerve regeneration

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Regenerative Biomaterials 2021年第4期8卷 88-96页

作者： Xiangyun Yao zhiwen yan Xu Wang Huiquan Jiang Yun Qian Cunyi Fan Department of Orthopedics Shanghai Jiao Tong University Affiliated Sixth People’s Hospital600 Yishan RoadShanghai 200233China Shanghai Engineering Research Center for Orthopaedic Material Innovation and Tissue Regeneration 600 Yishan RoadShanghai 200233China Youth Science and Technology Innovation Studio of Shanghai Jiao Tong University School of Medicine 600 Yishan RoadShanghai 200233China College of Fisheries and Life Science Shanghai Ocean University999 Metro loop Road ShanghaiChina

Graphene and its derivatives are fascinating materials for their extraordinary electrochemical and mechanical *** recent decades,many researchers explored their applications in tissue engineering and regenerative *** graphene oxide(rGO)possesses remarkable structural and functional resemblance to graphene,although some residual oxygen-containing groups and defects exist in the *** structure holds great potential since the remnantoxygenated groups can further be functionalized or ***,oxygen-containing groups can improve the dispersion of rGO in organic or aqueous ***,it is preferable to utilize rGO in the production of composite *** rGO composite scaffolds provide favorable extracellular microenvironment and affect the cellular behavior of cultured cells in the peripheral nerve *** the one hand,rGO impacts on Schwann cells and neurons which are major components of peripheral *** the other hand,rGO-incorporated composite scaffolds promote the neurogenic differentiation of several stem cells,including embryonic stem cells,mesenchymal stem cells,adipose-derived stem cells and neural stem *** review will briefly introduce the production and major properties of rGO,and its potential in modulating the cellular behaviors of specific stem ***,we present its emerging roles in the production of composite scaffolds for nerve tissue engineering.

关键词： reduced graphene oxide nerve regeneration tissue engineering biomaterials stem cell

Non-electric bioelectrical analog strategy by a biophysical-driven nano-micro spatial anisotropic scaffold for regulating stem cell niche and tissue regeneration in a neuronal therapy

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Bioactive Materials 2023年第2期20卷 319-338页

作者： Xiangyun Yao Lei Zhan zhiwen yan Juehong Li Lingchi Kong Xu Wang Huimin Xiao Huiquan Jiang Chen Huang Yuanming Ouyang Yun Qian Cunyi Fan Department of Orthopedics Shanghai Jiao Tong University Affiliated Sixth People’s HospitalShanghai200233China Shanghai Engineering Research Center for Orthopaedic Material Innovation and Tissue Regeneration Shanghai200233China Youth Science and Technology Innovation Studio of Shanghai Jiao Tong University School of Medicine Shanghai200233China Key Laboratory of Textile Science and Technology College of TextilesDonghua UniversityShanghai201620China College of Fisheries and Life Science Shanghai Ocean UniversityShanghai201306China

The slow regenerating rate and misdirected axonal growth are primary concerns that disturb the curative outcome of peripheral nerve *** intervention through nerve scaffolds can provide efficient,tunable and sustainable guidance for nerve ***,we fabricate the reduced graphene oxide(rGO)/polycaprolactone(PCL)scaffold characterized with anisotropic microfibers and oriented nanogrooves by electrospinning ***-derived stem cells(ADSCs)are seeded on the scaffolds in vitro and the viability,neural differentiation efficiency and neurotrophic potential are ***/PCL conduits reprogram the phenotype of seeded cells and efficiently repair 15 mm sciatic nerve defect in *** summary,biophysical cues on nerve scaffolds are key determinants to stem cell phenotype,and ADSC-seeded rGO/PCL oriented scaffolds are promising,controllable and sustainable approaches to enable peripheral nerve regeneration.

关键词： Reduced graphene oxide Nerve regeneration Biophysical Bioelectrical Nano-micro Adipose-derived stem cell

Biomechanics and joint pain with special reference to shoulder join pain

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Biomechanics and joint pain with special reference to should...

中国解剖学会2021年年会

作者： yan zhiwen Ling Engang Zhang Zongji Zhou Ping Kunming Medical University Haiyuan College

Neck and shoulder pain is common nowadays, sometimes accompanying with headache,dizziness and upper limb *** symptoms were similar to those caused by cervical ***,radiography and magnetic resonance imaging cannot full...

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空中目标辐射源的个体识别方法

系统工程与电子技术 2019年第11期41卷 2408-2415页

作者：刘明骞颜志文张俊林西安电子科技大学综合业务网理论及关键技术国家重点实验室

针对传统的辐射源个体识别方法在低信噪比环境下识别性能不佳的问题,提出了一种空中目标辐射源的个体识别方法,该方法利用经验模态分解和变分模态分解得到信号不同频率的模态分量,将各模态分量的多尺度排列熵作为特征,利用主成分分析对... 详细信息

针对传统的辐射源个体识别方法在低信噪比环境下识别性能不佳的问题,提出了一种空中目标辐射源的个体识别方法,该方法利用经验模态分解和变分模态分解得到信号不同频率的模态分量,将各模态分量的多尺度排列熵作为特征,利用主成分分析对数据进行降维,并采用支持向量机分类器进行辐射源个体识别。仿真结果表明,该方法对相位噪声、频率漂移以及谐波失真等细微特征的识别性能明显优于传统方法,并具有良好的抗噪性。

关键词：辐射源个体识别细微特征模态分解多尺度排列熵支持向量机

帕罗西汀与其他选择性5-HT再摄取抑制药疗效及安全性的meta分析

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中国现代应用药学 2019年第15期36卷 1941-1946页

作者：陈秋林孙洲亮颜志文厦门大学附属第一医院

目的评价帕罗西汀与其他选择性5-HT再摄取抑制药的疗效及安全性。方法计算机检索Cochrane图书馆、ISI数据库、中国知网(CNKI)、维普(VIP)、万方数字化期刊数据库,纳入帕罗西汀与其他选择性5-HT再摄取抑制药疗效及安全性随机对照试验(ran... 详细信息

目的评价帕罗西汀与其他选择性5-HT再摄取抑制药的疗效及安全性。方法计算机检索Cochrane图书馆、ISI数据库、中国知网(CNKI)、维普(VIP)、万方数字化期刊数据库,纳入帕罗西汀与其他选择性5-HT再摄取抑制药疗效及安全性随机对照试验(randomized controlled trial,RCT)、系统评价和meta分析文献,对纳入文献的RCTs进行方法学质量评价和meta分析,参考纳入文献的系统评价和meta分析结论。结果帕罗西汀与其他选择性5-HT再摄取抑制药疗效及安全性对比分析共纳入15个RCTs。2组抗抑郁总有效率差异有统计学意义(OR=1.45,95%CI=1.01~2.09,P=0.04);治疗2周和6周后HAMD评分差异有统计学意义(MD=-2.04,95%CI=-2.59^-1.49,P<0.000 01;MD=-0.69,95%CI=-1.18^-0.21,P=0.005);治疗6周后药物不良反应发生率差异有统计学意义(OR=0.88,95%CI=0.78~0.99,P=0.04)。结论与其他选择性5-HT再摄取抑制药相比较,帕罗西汀的总有效率及起效速度较低,不良反应发生率较高,其不再推荐为一线抗抑郁药。

关键词：帕罗西汀抗抑郁选择性 5-HT 再摄取抑制药 meta 分析

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大果型枣新品种灰实2号的选育

果树学报 2022年第8期39卷 1514-1516页

作者：吴正保史彦江颜志文新疆林业科学院乌鲁木齐830000 阿克苏地区实验林场试验站新疆阿克苏843000

灰实2号是新疆林业科学院和阿克苏大枣源枣业农民专业合作社在新疆阿克苏实验林场2队灰枣园中选育出的大果型、芽变新品种。该品种树姿半开张,树形圆头形。针刺不发达,长3.31 mm,二次枝弯曲度140°,当年生枝灰绿色。果实较大,近圆柱形,... 详细信息

灰实2号是新疆林业科学院和阿克苏大枣源枣业农民专业合作社在新疆阿克苏实验林场2队灰枣园中选育出的大果型、芽变新品种。该品种树姿半开张,树形圆头形。针刺不发达,长3.31 mm,二次枝弯曲度140°,当年生枝灰绿色。果实较大,近圆柱形,果实纵径3.48 cm、横径2.06 cm、果形指数约1.69,完熟期单果质量9.10 g。果皮稍厚,果面较平整。可食率95.6%,果核质量0.41 g。半干枣总糖含量(w,后同)66.11%,黄酮含量25.96 mg·g^(-1),可溶性蛋白质含量139.75 mg·g^(-1),纤维素含量7.37 mg·g^(-1)。4月中旬萌芽,比灰枣晚7 d左右,10月中旬进入完熟期。树体营养生长期206 d左右,果实生育期105 d左右。较抗缩果病、枣树病毒病,裂果较轻。适于新疆南疆枣区及相似生态区及栽培,嫁接当年开花结果,第9年平均单株半干枣产量7.0 kg。

关键词：枣新品种灰实2号大果型