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Carbon layer-coated ordered mesoporous silica supported Co-based catalysts for higher alcohol synthesis:The role of carbon source

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Chinese Chemical Letters 2020年第2期31卷 525-529页

作者： Siqi Fan Yue Wang Zhuoshi li Zhuang Zeng shaoxia Guo Shouying Huang Xinbin Ma Key Laboratory for Green Chemical Technology of Ministry of Education Collaborative Innovation Centre of Chemical Science and EngineeringSchool of Chemical Engineering and TechnologyTianjin UniversityTianjin 300350China

Surface chemical properties of supports have an important influence on active sites and their catalytic behavio ***,we fabricated a series of cobalt-based catalysts supported by carbon layer-coated ordered mesoporous silica(OMS) composites for higher alcohol synthesis(HAS).The carbon layers were derived from different sources and uniformly coated on the porous surface of *** with the characterization results of carbonized catalysts,it is demonstrated that the carbon layer-coated supports significantly enhanced the metal dispersion and increased the ratio of Co2+ to Co0 sites,which further increased the CO conversion and alcohols ***,it is found that the catalytic activity changed in line with the amount of defects and surface oxygenic groups of carbon layers,which re sulted from the different carbon *** highest space time yield of C2+OH was 27.5 mmol gcat-1h-1)obtained by the catalyst coated with glucose-derived carbon *** the carbon source is not the key factor influencing the distribution of Co-Co2+ dual sites and shows little effect on selectivity in *** results may guide for further design of carbon supported catalysts.

关键词： Syngas Higher alcohols Cobalt-based catalysts Carbon layer-coated support Carbon source

Effects of Manganese Toxicity on the Growth and Gene Expression at the Seedling Stage of Soybean

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Phyton-International Journal of Experimental Botany 2022年第5期91卷 975-987页

作者： Ying liu Jingye Chen Xiaohao li shaoxia Yang Hanqiao Hu Yingbin Xue Department of Biotechnology College of Coastal Agricultural SciencesGuangdong Ocean UniversityZhanjiang524088China Department of Resources and Environmental Sciences College of Chemistry and EnvironmentGuangdong Ocean UniversityZhanjiang524088China South China Branch of National Saline-Alkali Tolerant Rice Technology Innovation Center Zhanjiang524088China

In order to investigate the effects of Manganese(Mn)toxicity stress on the growth and gene expression at the seedling stage of soybean,soybean seedlings were treated with normal Mn concentration(5μmol/L MnSO_(4))and excess Mn concentration(100μmol/L MnSO_(4))by the method of hydroponic culture in this *** soybean was subjected to Mn toxicity stress,excessive Mn could affect seedling growth,root development,the number of Mn oxide spots in leaves,and the Mn accumulation content in different parts of *** the increase of exogenous Mn concentration and the prolongation of culture time,the shoot and root biomasses of soybean decreased significantly,but the plant height of soybean had no obvious *** total root length,root surface area and root volume of soybean decreased significantly,but the taproot length,taproot tip length and root diameter did not change *** number of Mn spots in the primary leaves(first leaf)was significantly more than that in the old leaves(second leaf)and the youngest leaves(fourth leaf).The Mn concentration in leaves was significantly higher than that in roots,and the Mn concentration in the old leaves was significantly higher than that in youngest leaves with the method of inductively coupled plasma atomic emission spectrometry(ICP-AES).Moreover,the results in the present study suggested that the 10 selected genes were significantly up-regulated or down-regulated by Mn toxicity in the old and young leaves by quantitative real-time PCR(qRT-PCR)*** indicates that these genes might be important in the process of regulation in old and young leaves of the physiological responses and ion transporting to Mn toxicity stress.

关键词： Manganese toxicity soybean gene expression

酸枣仁提取物调控cAMP-PKA通路促进小鼠体长增长及大鼠慢波睡眠的机制研究

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上海中医药杂志 2021年第5期55卷 77-83页

作者：谢艳张云芳宁桃丽邹吉锋李少侠薛彩霞王娜河南省洛阳正骨医院河南省骨科医院河南洛阳471000

目的探讨酸枣仁提取物调控cAMP-PKA通路影响小鼠体长增长及大鼠慢波睡眠的具体机制。方法 (1)48只昆明种雄性小鼠随机分为6组,分别为空白对照组(灌胃去离子水,并于末次灌胃后侧脑室注射灭菌的0.9%NaCl溶液)、蓝墨水组(灌胃去离子水,并... 详细信息

目的探讨酸枣仁提取物调控cAMP-PKA通路影响小鼠体长增长及大鼠慢波睡眠的具体机制。方法 (1)48只昆明种雄性小鼠随机分为6组,分别为空白对照组(灌胃去离子水,并于末次灌胃后侧脑室注射灭菌的0.9%NaCl溶液)、蓝墨水组(灌胃去离子水,并于末次灌胃后侧脑室注射过滤灭菌的蓝墨水)、用药组(灌胃酸枣仁提取物水溶液,并于末次灌胃后侧脑室注射过滤灭菌的蓝墨水)、阳性对照组(灌胃酸枣仁皂苷A水溶液,并于末次灌胃后侧脑室注射过滤灭菌的蓝墨水)、Gi/o蛋白抑制剂+用药组(灌胃酸枣仁提取物水溶液,并于末次灌胃后侧脑室注射加有过滤灭菌蓝墨水的PT)和5-HT1AR抑制剂+用药组(灌胃酸枣仁提取物水溶液,并于末次灌胃后侧脑室注射加有过滤灭菌蓝墨水的P-MPPF)。各组小鼠灌胃相应药物,连续20 d。测定小鼠体长差异,采用EliSA法测定小鼠血清生长激素(GH)水平、脑组织5-羟色胺1A受体(5-HT1AR)活性、PKA的含量和Gi/o蛋白的含量;Western blot法测定小鼠脑组织5-HT1AR蛋白的表达。(2)36只SD大鼠随机分成6组,分组及给药方式同小鼠,连续给药3 d后,采用WXL睡眠自动分析系统,分析大鼠睡眠时相差异。结果 (1)与空白对照组和蓝墨水组比较,用药组、Gi/o蛋白抑制剂+用药组、5-HT1AR抑制剂+用药组、阳性对照组小鼠体长均明显增长(P0.05)。(2)与空白对照组比较,用药组大鼠总睡眠时间明显增长(P0.05)。结论酸枣仁提取物可以通过提高Gi/o蛋白的表达,使之通过cAMP-PKA途径促进5-HT1AR在脑内的含量和活性提高,还可延长慢波睡眠,进而促进GH的分泌发挥促进骨骼增长的生物学效应。

关键词：酸枣仁提取物酸枣仁皂苷A 骨骼增长 cAMP-PKA通路 Gi/o蛋白 5-HT1A受体模型小鼠模型大鼠慢波睡眠

Performance of a 4 cm iodine-fueled radio frequency ion thruster

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Plasma Science and Technology 2020年第9期22卷 44-50页

作者： Jinghua YANG shaoxia JIA Zhenhua ZHANG Xinghua ZHANG Ting JIN Long li Yong CAI Jian CAI Institute of Microelectronics Chinese Academy of SciencesBeijing 100029People's Republic of China Nanjing University of Aeronautics and Astronautics Nanjing 210016People's Republic of China Suzhou Nano-Space Dynamics Technology Co.Ltd Suzhou 215000People's Republic of China

The performance of an iodine radio ion thruster with a 4 cm diameter(IRIT4)was studied experimentally in this *** of the mass flow rates of the iodine propellant is achieved by using a temperature control method of the iodine *** of the thruster using iodine as propellants is obtained at different total thruster powers of 40.6–128.8 W,different grid voltages of 1000–1800 V and the iodine flow rate of 100μgs^(-1).Results show that thrust and specific impulse increase approximately linearly with the increasing total thruster power and the screen grid *** thrust of 2.32 mN and the specific impulse of 2361 s are obtained at the nominal total thruster power of 95.8 W and the screen grid voltage of 1800 *** is also indicated that performance of the iodine propellant is comparable to that of the xenon propellant;and a difference between them is that the iodine thrust is slightly higher than xenon when the total thruster power is more than 62 *** the nominal 95.8 W total thruster power,the thrust values of them are 2.32 m N and 2.15 mN respectively,and the thrust-to-power ratios of them are 24.2 mN kW^(-1)and 23.5 mN kW^(-1),respectively.

关键词： electric propulsion iodine propellant radio frequency ion propulsion

Influence of anode temperature on ignition performance of the IRIT4-2D iodine-fueled radio frequency ion thruster

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Plasma Science and Technology 2022年第1期24卷 139-150页

作者： Xinghua ZHANG Zhenhua ZHANG shaoxia JIA Ting JIN Jinghua YANG Long li Fangfang liU Yong CAI Jian CAI Institute of Microelectronics Chinese Academy of SciencesBeijing 100029People's Republic of China Suzhou Nano-Space Dynamics Technology Co.Ltd Suzhou 215000People’s Republic of China

This paper reports the ignition performance of the iodine-fueled radio frequency(RF)ion thruster(IRIT)at different anode temperaturesT_(a0).The experimental results show that the anode temperature plays important role on the ignition process of the *** were two characteristic temperatures related to the anode:the minimum ignition temperatureT_(i0)and the stable ignition temperatureT_(is),which were much lower than the pipeline temperature and the storage tank ***_(a0)limation-clearing inside the *** research helps improve the preheating design of the iodine-fueled electric thruster.

关键词： radio frequency ion thruster iodine propellant ignition deposition sublimation clog

MICROHARDNESS DISTRIBUTION AT INTERFACE OF(N^++IP)-TiN COMPOSITE COATINGS ON STEEL

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Acta Metallurgica Sinica(English Letters) 1992年第8期5卷 110-113页

作者： JIN Zhujing YU li YU Zhiming DAI shaoxia XU Jiayin Institute of Corrosion and Protection of Metals,Academia Sinica,Corrosion Science Laboratory Academia Sinica,Shenyang,China

The composite coating of(N^++IP)-TiN was prepared by ion-plated TiN film onto ion-nitrided case on the low carbon steel *** microhardness measurement along in- terface between IP-TiN coating and substrate was detected as a moderate decrease in magni- tude with increase of distance from the coating *** seems due to the occurrence of ion nitride case,ε-Fe_3N-Fe_2N and Fe_4N phases,along the interface.

关键词： microhardness composite coating interface ion-plating ion

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林火对植物根围丛枝菌根真菌多样性的影响

生态学报 2016年第10期36卷 2833-2841页

作者：孙龙燕李士美李伟郭绍霞青岛农业大学菌根生物技术研究所青岛266109 青岛农业大学园林与林学院青岛266109

林火是森林生态系统的一种主要干扰因子,以青岛市三标山林火迹地为研究对象,采集荆条(Vitex negundo)、胡枝子(Lespedeza bicolor)、花木蓝(Indigofera kirilowii)、青花椒(Zanthoxylum schinifolium)和野青茅(Deyeuxia arundinacea)5种优势植物根围土壤,研究不同林火强度对丛枝菌根(AM)真菌多样性的影响。结果表明,AM真菌侵染率和孢子密度随火灾强度的加强而降低;非过火区植物根围土壤中,分离鉴定出AM真菌3属11种,轻度过火区分离鉴定出AM真菌3属10种,中度过火区分离鉴定出AM真菌3属9种,重度过火区分离鉴定出AM真菌3属8种。过火区AM真菌种丰度低于非过火区。过火区和非过火区AM真菌的重要值和优势种不同,非过火区植物根围的优势种是地球囊霉(Glomus geosporum)、台湾球囊霉(***)、分支巨孢囊霉(Gigaspora ramisporophora)、极大巨孢囊霉(***)、福摩萨球囊霉(***)、悬钩子球囊霉(***)、柯氏无梗囊霉(Acaulospora koskei)和松蜜无梗囊霉(***);轻度过火区植物根围的优势种是地球囊霉和台湾球囊霉;中度过火区的是台湾球囊霉和地球囊霉(野青茅除外);重度过火区植物根围的优势种是地球囊霉。不同强度的过火区对AM真菌群落组成有不同程度的影响。认为林火降低植物根围土壤中AM真菌多样性。

关键词：林火 AM真菌多样性孢子密度物种多样性指数种丰度 RDA

丛枝菌根真菌和外源褪黑素提高黄瓜抗冷性的生理机制

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植物生理学报 2022年第7期58卷 1254-1262页

作者：朱恒达王策李伟郭绍霞李敏青岛农业大学菌根生物技术研究所山东青岛266109 青岛农业大学园艺学院山东青岛266109

以‘津优35号’黄瓜(Cucumis sativus)幼苗为试材,利用光照培养箱进行低温(昼12°C/夜5°C)处理,研究丛枝菌根真菌(AMF)根内根孢囊霉(Rhizophagus irregularis)和外源褪黑素(MT)对低温胁迫下黄瓜幼苗生长量和相关生理指标的影响。结果表... 详细信息

以‘津优35号’黄瓜(Cucumis sativus)幼苗为试材,利用光照培养箱进行低温(昼12°C/夜5°C)处理,研究丛枝菌根真菌(AMF)根内根孢囊霉(Rhizophagus irregularis)和外源褪黑素(MT)对低温胁迫下黄瓜幼苗生长量和相关生理指标的影响。结果表明:低温胁迫能明显抑制黄瓜生长,增加相对电导率以及丙二醛(MDA)、脱落酸(ABA)含量,降低生长素(IAA)含量;而接种AMF和/或喷施MT均能促进低温下黄瓜幼苗生长,提高黄瓜幼苗叶片超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)活性以及脯氨酸、生长素、赤霉素(GA_(1))、玉米素核苷(ZR)含量,降低相对电导率以及丙二醛、脱落酸含量。其中,接种AMF+喷施褪黑素处理提高黄瓜抗冷性效果最佳。结论认为AMF和褪黑素能提高抗氧化酶活性和渗透调节能力,维持植物激素平衡,从而提高黄瓜幼苗抗冷性。

关键词：丛枝菌根真菌褪黑素低温胁迫黄瓜幼苗生理指标

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淀粉-脂质复合物功能及营养特性研究进展

食品科学 2020年第9期41卷 238-245页

作者：石少侠董瑶瑶李琪于修烛西北农林科技大学食品科学与工程学院陕西杨凌712100

为进一步研究淀粉-脂质复合物的功能及营养特性,本文对淀粉-脂质复合物的复合机制及其螺旋结构和表征方法进行了综述,并探讨不同条件下复合物的功能特性(溶解度和膨胀力、抗消化性、糊化特性、流变性、介电性、热稳定性和成膜性)及其在... 详细信息

为进一步研究淀粉-脂质复合物的功能及营养特性,本文对淀粉-脂质复合物的复合机制及其螺旋结构和表征方法进行了综述,并探讨不同条件下复合物的功能特性(溶解度和膨胀力、抗消化性、糊化特性、流变性、介电性、热稳定性和成膜性)及其在降低血糖和缓释活性组分等方面的营养特性,以期为开发复合物的营养特性及其在食品行业中的应用提供新的途径。

关键词：淀粉-脂质复合物功能特性营养特性应用