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Nutritional Composition and Assessment of Gracilaria lemaneiformis Bory

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Journal of Integrative Plant Biology 2006年第9期48卷 1047-1053页

作者： Xue Wen Changlian Peng Houcheng Zhou zhifang lin Guizhu lin Shaowei Chen Ping Li College of Life Sciences South China Normal University Guangzhou 510631 China South China Institute of Botany the Chinese Academy of Sciences Guangzhou 510650 China Center for Marine Resource Research and Development in Guangdong Guangzhou 510070 China

The chemical composition, mineral elements, vitamins, free fatty acids and amino acid content of the edible red alga Gracilaria lemaneiformis Bory, grown in the sea near Nan＇ao island, Guangdong Province, were analyzed in the present study. Gracilaria lemaneiformis Bory showed a total sugar content of 14.65%. The protein content was 21%, of which approximately 41% was determined to be essential amino acids （EAA）. The major amino acid components were glutamic acid, leucine, arginine, and alanine. Of the EAA assayed, methionine and cysteine appeared to be the most limiting amino acids compared with the EAA pattern provided by Food and Agricultural Organization of the United Nations. The total lipids content was 0.87% and comprised a high composition of unsaturated fatty acids （61%）, mainly as linoleic acid and oleic acid, and a little amount of polyunsaturated fatty acid; palmitic acid was the main component （39%） of saturated acids. Relatively high levels of vitamin C, iodine, phosphorus, and zinc were also present in G. lemaneiformis. The nutritional composition between G. lemaneiformis and Nostoc flagelliforme, a rare alga that is widely eaten in Chinese society, was compared. The results suggest that N. flagelliforme can be substituted for by G. lemaneiformis, not only because of their similar shape, but also because of their approximate nutritional composition. Gracilaria lemaneiformis may possibly serve as a potential healthy food in human diets in the future.

关键词： amino acids fatty acids Gracilaria lemaneiformis mineral elements protein vitamins

Overview of runaway current suppression and dissipation on J-TEXT tokamak

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Plasma Science and Technology 2022年第12期24卷 115-125页

作者： Zhongyong CHEN zhifang lin Wei YAN Duwei HUANG Yunong WEI You LI Nianheng CAI Jie HU Yonghua DING Yunfeng LIANG Zhonghe JIANG J-TEXT Team International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics State Key Laboratory of Advanced Electromagnetic Engineering and TechnologySchool of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074People's Republic of China School of Electrical Engineering&Automation Jiangsu Normal UniversityXuzhou 221116People's Republic of China

The main works on disruption mitigation including suppression and mitigation of runaway current on the J-TEXT tokamak are summarized in this *** strategies for the mitigation of runaway electron(RE) beams are applied in *** first strategy enables the REs to be completely suppressed by means of supersonic molecular beam injection and resonant magnetic perturbation which can enhance RE loss,magnetic energy transfer which can reduce the electric field,and secondary massive gas injection(MGI) which can increase the collisional *** the second strategy,the runaway current is allowed to form but should be dissipated or soft landed within *** is observed that the runaway current can be significantly dissipated by MGI,and the dissipation rate increases with the injected impurity particle number and eventually stabilizes at 28 MA s^(-1).The dissipation rate of the runaway current can be up to 3 MA s^(-1)by ohmic *** pellet injection has been chosen as the main disruption mitigation method,which has the capability of injecting material deeper into the plasma for higher density assimilation when compared to ***,simulation works show that the RE seeds in the plasma are strongly influenced under different phases and sizes of 2/1 mode locked islands during thermal *** robust runaway suppression and runaway current dissipation provide an important insight on the disruption mitigation for future large tokamaks.

关键词： tokamak disruption mitigation runaway electron runaway current

The anti-photooxidation of anthocyanins-rich leaves of a purple rice cultivar

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Science China(Life Sciences) 2006年第6期49卷 543-551页

作者： PENG Changlian1,2,lin zhifang2,lin Guizhu2 & CHEN Shaowei2 1. College of Life Science,South China Normal University,Guangzhou 510631,China 2. South China Botanical Garden,Chinese Academy of Sciences,Guangdong Key Laboratory of Digital Botanical Garden,Guangzhou 510650,China College of Life Science South China Normal University Guangzhou 510631 China South China Botanical Garden Chinese Academy of Sciences Guangdong Key Laboratory of Digital Botanical Garden Guangzhou 510650 China

In the leaf of rice (Oryza sativa L.) cultivar Yunnan purple rice,the anthocyanins with an obvious absorption peak at 530nm were distributed in the cells of upper and lower epidermis,bulliform tissue and bristle. The maximal photosynthetic oxygen evolution rate and chlorophyll content in flag leaves were 28% and 23%,respectively,more than the common green leaf rice cultivar Chijiaoru-anzhan. Higher chlorophyll content is probably one of the physiological adaptations for enhancing light harvesting capacity of the antenna in photosystems in this cyanic leaves species. Upon the photooxidation of leaf segments mediated by methyl viologen in weak light for 3 days,the distinct bleaching of anthocyanins in purple rice was associated with the reduction of scavenging ability to DPPH· free radical ability and the increase in membrane leakage rate. But almost no changes in contents of flavonoids and total phenolics were observed. Chlorophyll fluorescence parameters Fv/Fo,qP and φPSⅡ decreased with the increase in NPQ and DES of xanthophylls cycle after photooxidation treatment. Green rice leaves showed more decrease in DPPH· scavenging rate and more increase in cell membrane leakage rate but showed a trace of anthocyanins during photooxidation. It is sug-gested that anthocyanin may be a beneficial and primary antioxidant in sun cyanic rice leaves against oxidative stress induced by environmental adversity. And photooxidation could induce different changing patterns of anthocyanins between the tested purple and green rice leaves.

关键词： purple rice, anthocyanins, photooxidation, DPPH· scavenging ability, chlorophyll fluorescence, methyl viologen.

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活性氧调控植物生长发育的研究进展

植物学报 2012年第1期47卷 74-86页

作者：林植芳刘楠中国科学院华南植物园广州510650

活性氧(ROS)是植物有氧代谢过程中的副产物,它在植物的许多生命过程中均具有有害和有利的双重功能。ROS对细胞的氧化损伤作用和信号转导诱导植物防卫反应已有详尽的研究。近年来,越来越多的关于ROS调控植物生长发育的证据开始引起了人... 详细信息

活性氧(ROS)是植物有氧代谢过程中的副产物,它在植物的许多生命过程中均具有有害和有利的双重功能。ROS对细胞的氧化损伤作用和信号转导诱导植物防卫反应已有详尽的研究。近年来,越来越多的关于ROS调控植物生长发育的证据开始引起了人们的广泛关注。细胞的生长是植物发育的重要部分,ROS通过直接或间接调节细胞的生长来控制植物的发育,成为植物发育的重要调节剂。该文综述了羟自由基(.OH)及其前体超氧阴离子自由基(O2–.)和过氧化氢(H2O2)调控植物生长发育的研究进展,包括ROS调控植物不同器官生长的证据和机理、ROS产生的途径及其检测方法,同时对今后的研究进行了展望。

关键词：胞壁松弛 NADPH氧化酶过氧化物酶质膜活性氧

Optical pulling force on nanoparticle clusters with gain due to Fano-like resonance

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Chinese Physics B 2023年第1期32卷 334-339页

作者：马江南冯侣王国富林志方郑红霞陈华金 School of Automation Guangxi University of Science and TechnologyLiuzhou 545006China School of Electronic Engineering Guangxi University of Science and TechnologyLiuzhou 545006China State Key Laboratory of Surface Physics and Department of Physics Fudan UniversityShanghai 200433China Guangxi Earthmoving Machinery Collaborative Innovation Center Liuzhou 545006China

We demonstrate that,in a simple linearly-polarized plane wave,the optical pulling forces on nanoparticle clusters with gain can be induced by the Fano-like *** numerical results based on the full-wave calculation show that the optical pulling forces can be attributed to the recoil forces for the nanoparticle clusters composed of dipolar nanoparticles with three different ***,the recoil forces giving rise to optical pulling forces are exactly dominated by the coupling term between the electric and magnetic dipoles excited in the nanoparticle clusters,while other higherorder terms have a negligible *** addition,the optical pulling force can be tailored by modulating the Fano-like resonance via either the particle size or the gain magnitude,offering an alternative freedom degree for optical manipulations of particle clusters.

关键词： optical pulling force nanoparticle clusters Fano-like resonance

考虑高斯有色噪声的FOMC-HTLS-Adaline算法在低频振荡模式辨识中的研究

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电工技术学报 2017年第6期32卷 21-30页

作者：王臻李承林志芳李惠章华中科技大学电气与电子工程学院武汉430074

针对广域测量系统的实测信号受高斯色噪声的影响,提出一种利用FOMC-HTLSAdaline进行低频振荡在线辨识的新方法。首先,为抑制高斯色噪声的影响,利用四阶混合累积量的盲高斯性,将四阶混合累积量(FOMC)序列代替实测序列进行低频振荡的辨识... 详细信息

针对广域测量系统的实测信号受高斯色噪声的影响,提出一种利用FOMC-HTLSAdaline进行低频振荡在线辨识的新方法。首先,为抑制高斯色噪声的影响,利用四阶混合累积量的盲高斯性,将四阶混合累积量(FOMC)序列代替实测序列进行低频振荡的辨识。然后,利用HTLS和自适应神经网络算法(Adaline ANN)相结合,估计出低频振荡的频率、衰减因子、幅值和相位。Adaline神经网络的引入解决了四阶混合累积处理后,模式幅值和相位不易确定的难点,同时减少矩阵处理引入的误差累积,提高检测精度。四机两区域系统仿真算例和实测相量测量单元(PMU)算例共同表明,FOMC-HTLS-Adaline算法可以在高斯色噪声环境下,精确地在线辨识系统振荡模式。

关键词：广域测量系统四阶混合累积量高斯色噪声 HTLS Adaline 人工神经网络模态信息

中小学语文课程中革命文化教育的价值澄清与实践路径

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课程．教材．教法 2020年第5期40卷 99-105页

作者：林志芳潘庆玉山东师范大学文学院济南幼儿师范高等专科学校济南250014

语文课程在继承与弘扬革命文化方面具有不可替代的优势,但人们对此还存在一些认识误区。对这些误区进行辨析与澄清,是语文教育理论研究的重要课题。语文课程中的革命文化教育在凝聚信仰、传承文化、立德树人等方面具有极其重要的价值。... 详细信息

语文课程在继承与弘扬革命文化方面具有不可替代的优势,但人们对此还存在一些认识误区。对这些误区进行辨析与澄清,是语文教育理论研究的重要课题。语文课程中的革命文化教育在凝聚信仰、传承文化、立德树人等方面具有极其重要的价值。革命文化题材类课文的教学应以历史的、辩证的态度面对文本,以教学创新破解重点难点,唤醒学生的感知体验,引导学生内化于心,外化于行。

关键词：革命文化语文教学价值观教育

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光敏反应对过氧化氢酶的影响

生物化学与生物物理进展 1991年第6期18卷 435-438页

作者：林植芳中国科学院华南植物研究所广州510650

光氧化反应中,纯过氧化氢酶活性受光敏化剂血卟啉Ⅳ和核黄素的抑制。随光敏化剂浓度增高及照光时间延长,抑制程度加大。酶与光敏化剂反应后吸收光谱位移,峰形改变。紫外差示吸收光谱出现229nm负峰(血卟啉)和236—240nm峰(核黄素)。结果... 详细信息

光氧化反应中,纯过氧化氢酶活性受光敏化剂血卟啉Ⅳ和核黄素的抑制。随光敏化剂浓度增高及照光时间延长,抑制程度加大。酶与光敏化剂反应后吸收光谱位移,峰形改变。紫外差示吸收光谱出现229nm负峰(血卟啉)和236—240nm峰(核黄素)。结果表明酶活的抑制与其蛋白构象的变化相关。

关键词：过氧化氢酶光敏反应核黄素血卟啉紫外差光谱

定子电流二次方法的异步电机转子复合故障诊断

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电工技术学报 2016年第16期31卷 50-56页

作者：王臻李承林志芳许允之陈旭强电磁工程与新技术国家重点实验室(华中科技大学) 武汉430074 华中科技大学电气与电子工程学院武汉430074 华中科技大学物理学院武汉430074 中国矿业大学信息与电气工程学院徐州221000

为了突出故障早期的故障特征信息,避免复杂算法,实现故障早期状态在线监测,提出定子电流二次方法(流方)的笼型异步电机转子复合故障检测。定子电流经过二次方后转移和放大了定子电流中的故障信号,由于转子断条和气隙偏心的故障特征频率... 详细信息

为了突出故障早期的故障特征信息,避免复杂算法,实现故障早期状态在线监测,提出定子电流二次方法(流方)的笼型异步电机转子复合故障检测。定子电流经过二次方后转移和放大了定子电流中的故障信号,由于转子断条和气隙偏心的故障特征频率在频谱分布上的差距,转子复合故障得到分离和辨识。同时比较了单相流方和三相总流方对复合故障的诊断效果。复合故障时,流方的故障频率不是单一故障频率的直接累加,还包括两故障频率所引起的交叉干扰项。实验表明,随着断条数的增加,复合故障中表征断条的故障特征分量的幅值增加,有利于故障程度的量化和诊断系统的建立。

关键词：定子电流二次方转子复合故障故障特征频率在线监测交叉干扰