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Preparation of mesoporous activated carbons from coal liquefaction residue for methane decomposition

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Journal of Natural Gas Chemistry 2012年第6期21卷 759-766页

作者： Jianbo Zhang Lijun Jin shengwei zhu Haoquan Hu State Key Laboratory of Fine Chemicals Institute of Coal Chemical EngineeringSchool of Chemical EngineeringDalian University of TechnologyDalian 116024LiaoningChina

Mesoporous activated carbons were prepared from direct coal liquefaction residue （CLR） by KOH activation method, and the experiments were carried out to investigate the effects of KOH/CLR ratio, solvent for mixing the CLR and KOH, and carbonization procedure on the resultant carbon texture and catalytic activity for catalytic methane decomposition （CMD）. The results showed that optimal KOH/CLR ratio of 2 ： 1; solvent with higher solubility to KOH or the CLR, and an appropriate carbonization procedure are conductive to improving the carbon pore structure and catalytic activity for CMD. The resultant mesoporous carbons show higher and more stable activity than microporous carbons. Additionally, the relationship between the carbon textural properties and the catalytic activity for CMD was also discussed.

关键词： mesoporous activated carbon KOH methane decomposition coal liquefaction residue hydrogen

Rapid plant regeneration from cotton (Gossypium hirsutum L.)

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Chinese Science Bulletin 2000年第19期45卷 1771-1774页

作者： shengwei zhu Jingsan Sun Chinese Acad Sci Inst Bot Beijing 100093 Peoples R China

A simple and rapid regeneration method of cotton (Gossypium hirsutum L. cv. Xinluzao4) is described. The proper use of phytohormone KT and IBA validly promoted the survival rate of test-tube plants and shortened the p... 详细信息

关键词： Gossypium hirsutum L. tissue culture in vitro regeneration graft.

无人驾驶拖拉机田间运行轨迹跟踪控制系统设计

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农机使用与维修 2024年第9期 27-31页

作者：卢越朱省委吴晓蕊郑州工业应用技术学院郑州451100

现代农业面临劳动力短缺和成本上涨等问题,无人驾驶拖拉机可以减少对人工的依赖,降低劳动成本。然而,由于田间地形复杂多变和环境因素的影响,无人驾驶拖拉机在作业过程中路径规划与跟踪是保证无人驾驶拖拉机正常运行的基础条件与技术支... 详细信息

现代农业面临劳动力短缺和成本上涨等问题,无人驾驶拖拉机可以减少对人工的依赖,降低劳动成本。然而,由于田间地形复杂多变和环境因素的影响,无人驾驶拖拉机在作业过程中路径规划与跟踪是保证无人驾驶拖拉机正常运行的基础条件与技术支持。该文采用多传感器融合技术,包括GPS、惯性导航系统(INS)、视觉传感器和激光雷达,设计一种无人驾驶拖拉机田间运行轨迹跟踪控制系统,并通过建立拖拉机运动学模型和动力学模型,设计了基于模糊控制和PID控制的复合控制算法,实现拖拉机的轨迹跟踪控制。该系统能够自适应地调整控制参数,克服田间复杂地形和环境变化对运行轨迹的影响。通过田间实地测试验证了系统的有效性和稳定性,结果表明该系统在不同地形条件下均能实现高精度的轨迹跟踪,为无人驾驶农业机械的应用提供了有力的技术支持。

关键词：无人驾驶拖拉机轨迹跟踪控制系统多传感器融合模糊控制 PID控制

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中晚期原发性肝细胞癌的联合治疗研究进展及其展望

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肝胆胰外科杂志 2024年第5期36卷 262-268页

作者：朱生威杨彦李章睿梁昌富海南医学院第一附属医院肝胆外科海南海口570100

近年来肝癌领域取得了一系列令人鼓舞的突破,免疫检查点抑制剂(ICIs)在中晚期肝细胞癌(HCC)治疗中大放异彩,ICIs联合靶向治疗及局部治疗为患者提供了新的治疗选择和更大的希望,并不断在临床实践中展现出良好的效果,展示了医学界不断努... 详细信息

近年来肝癌领域取得了一系列令人鼓舞的突破,免疫检查点抑制剂(ICIs)在中晚期肝细胞癌(HCC)治疗中大放异彩,ICIs联合靶向治疗及局部治疗为患者提供了新的治疗选择和更大的希望,并不断在临床实践中展现出良好的效果,展示了医学界不断努力改善肝癌治疗的成果。这些突破不仅为肝癌患者提供了更多的治疗机会,还为未来的研究铺平了道路,但是多种治疗方法的组合如何让肝癌患者得到最好的获益,仍然是非常重要的问题。本文综述了中晚期原发性HCC目前的联合治疗进展及未来展望。

关键词：肝细胞癌原发性肝癌 T+A方案双艾方案 tira+T+A方案 STRIDE方案进展及展望

PIF3 Is Involved in the Primary Root Growth Inhibition of Arabidopsis Induced by Nitric Oxide in the Light

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Molecular Plant 2014年第4期7卷 616-625页

作者： Sulan Bai Tao Yao Miaomiao Li Xiaomin Guo Yaochuan Zhang shengwei zhu Yikun He College of Life Sciences Capital Normal University Beijing 100048 PR China Beijing Vocational College of Agriculture Beijing 102442 PR China Institute of Botany Chinese Academy of Sciences Beijing 100731 PR China

PHYTOCHROME INTERACTING FACTOR3 （PIF3） is an important component in the phytochrome signaling pathway and mediates plant responses to various environmental conditions. We found that PIF3 is involved in the inhibition of root growth of Arabidopsis thaliana seedlings induced by nitric oxide （NO） in light. Overexpression of PIF3 partially alleviated the inhibitory effect of NO on root growth, whereas the pif3-1 mutant displayed enhanced sensitivity to NO in terms of root growth. During phytochrome signaling, the photoreceptor PHYB mediates the degradation of PIF3. We found that the phyB-9 mutant had a similar phenotype to that of PIF3ox in terms of responsiveness to NO. Furthermore, NO treatment promoted the accumulation of PHYB, and thus reduced PIF3 content. Our results further show that the activity of PIF3 is regulated by the DELLA protein RGL3[RGA （repressor of gal-3） LIKE 3]. Therefore, we speculate that PIF3 lies downstream of PHYB and RGL3, and plays an important role in the inhibitory effect of NO on root growth of Arabidopsis seedlings in light.

关键词： nitric oxide PIF3 PHYB RGL3 root growth inhibition.

Expressing PHB synthetic genes through chloroplast genetic engineering

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Chinese Science Bulletin 2002年第16期47卷 1373-1376页

作者： ZHANG Jingyu SU Ning ZHANG Zhonglin ZHAO Huayan zhu shengwei SONG Yanru Key Laboratory of Photosynthesis and Enviromental Molecular Physiology Institute of BotanyChinese Academy of SciencesBeijing 100093China Biotechnology Research Institute Chinese Academy of Agricultural SciencesBeijing 100081China

Chloroplast integration and expression vector containing expression cassettes for phbB, phbA, phbC and aadA genes was constructed and bombarded into the tobacco chloroplast genome. Transplastomic plants were analyzed with PCR and Southern blot. Their homoplastomy was also judged. Northern dot and RT-PCR analysis were employed to investigate transgene expression at transcriptional level. The results indicate that the chloroplast transformation system is compatible for poly-3-hydroxybutyrate (PHB) production.

关键词： chloroplast genetic engineering poly-3-hydroxybutyrate transplastomic tobacco transcriptional level gene silencing.

Shear resistance characteristics and influencing factors of root-soil composite on an alpine metal mine dump slope with different recovery periods

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Journal of Mountain Science 2024年第3期21卷 835-849页

作者： PANG Jinghao LIANG Shen LIU Yabin LI shengwei WANG Shu zhu Haili LI Guorong HU Xiasong Department of Geological Engineering Qinghai UniversityXining 810016China Key Laboratory of Genozoic Resource&Environment in North Margin of the Tibetan Plateau Xining 810016China

Artificial vegetation restoration is the main measure for vegetation restoration and soil and water conservation in alpine mine dumps on the Qinghai-Tibet Plateau,***,there are few reports on the dynamic changes and the influencing factors of the soil reinforcement effect of plant species after artificial vegetation restoration under different recovery *** selected dump areas of the Delni Copper Mine in Qinghai Province,China to study the relationship between the shear strength and the peak displacement of the root-soil composite on the slope during the recovery period,and the influence of the root traits and soil physical properties on the shear resistance characteristics of the root-soil composite via in situ direct shear *** results indicate that the shear strength and peak displacement of the rooted soil initially decreased and then increased with the increase of the recovery *** shear strength of the rooted soil and the recovery period exhibited a quadratic function *** is no significant function relationship between the peak displacement and the recovery *** positive correlations(P0.05)between the shear strength of the root-soil composite and the root length density,and the root volume ratio of the coarse roots to the fine roots.A significant negative linear correlation(P0.05)with the root traits,other soil physical property indices(the moisture content and dry density of the soil),and slope *** coarse-grain content is the main factor controlling the peak displacement of the rooted soil.

关键词： Alpine mine dump Artificial vegetation restoration period Rooted soil Shear resistance characteristics Root traits Soil physical properties

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陆地棉抗虫遗传工程

棉花学报 2002年第Z1期14卷 83-页

作者： shengwei zhu

　　In order to improve insect-resistance of cotton and cultivate new cotton varieties ,tissue culture and plant regeneration of cotton (Gossypium hirsutum L. ) were studied with Xinluzao 4,Xi 550,Jizi 492,Hengwu 89-30,Han 93-2 and Jizi 123 . A system of cotton tissue culture for rapid plant regeneration was developed.　　……

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抗蚜基因及其转基因作物研究进展

生物技术通报 2014年第10期30卷 1-7页

作者：陈劲刘志朱生伟湖南农业大学生物科学技术学院长沙410128 中国科学院植物研究所植物分子生理学重点实验室北京100093

普遍且频繁发生的蚜虫危害给农业生产造成严重损失。就抗蚜虫基因工程研究取得的进展进行综述,分析目前克隆的抗蚜基因及其获得的转基因作物,并讨论转基因抗蚜中存在的问题,探讨通过新的毒杀基因克隆、基因定点突变、增加表达调控元件... 详细信息

普遍且频繁发生的蚜虫危害给农业生产造成严重损失。就抗蚜虫基因工程研究取得的进展进行综述,分析目前克隆的抗蚜基因及其获得的转基因作物,并讨论转基因抗蚜中存在的问题,探讨通过新的毒杀基因克隆、基因定点突变、增加表达调控元件及利用凝集素蛋白作为运输载体等方法来提高抗蚜效果,为今后抗蚜转基因作物育种研究提供参考。

关键词：蚜虫抗蚜基因基因工程转基因作物