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暗褐网柄牛肝菌栽培料的筛选

中国食用菌 2024年第1期43卷 24-31页

作者：刘珺史志超李冲伟黑龙江大学生命科学学院/农业微生物技术教育部工程研究中心/黑龙江省寒地生态修复与资源利用重点实验室/黑龙江省普通高校微生物重点实验室黑龙江哈尔滨150080 哈尔滨美苏生物科技开发有限公司黑龙江哈尔滨150080

牛肝菌栽培一直是食用菌生产领域的研究难点,适宜的栽培料是菌丝体生长和子实体形成的重要保障。通过测定暗褐网柄牛肝菌的菌丝长势和栽培过程中理化指标以及胞外酶活性,筛选该牛肝菌菌丝体生长的最佳栽培基质。结果表明,通过测定菌丝... 详细信息

牛肝菌栽培一直是食用菌生产领域的研究难点,适宜的栽培料是菌丝体生长和子实体形成的重要保障。通过测定暗褐网柄牛肝菌的菌丝长势和栽培过程中理化指标以及胞外酶活性,筛选该牛肝菌菌丝体生长的最佳栽培基质。结果表明,通过测定菌丝体长势,初筛得到5种栽培料配方,分别为C_(1)(杨木屑99%、生石灰1%)、C_(3)(橡木屑99%、生石灰1%)、Y_(1)(杨木屑50%、玉米芯24.5%、麦麸皮24.5%、生石灰1%)、Y_(2)(杨木屑50%、玉米芯24.5%、棉籽壳24.5%、生石灰1%)、X2(橡木屑50%、玉米芯24.5%、棉籽壳24.5%、生石灰1%)。在栽培过程中,Y_(1)和Y_(2)栽培基质总有机碳、全氮含量在菌丝体生长时期均处于较高水平,且营养消耗速率快,Y_(2)栽培基质中羧甲基纤维素酶、半纤维素酶、淀粉酶、蛋白酶和漆酶活性均较显著高于其他组。由此可见,Y_(2)栽培料基质更适合暗褐网柄牛肝菌菌丝体的生长。试验结果为暗褐网柄牛肝菌菌丝体生长提供了理论依据,为暗褐网柄牛肝菌栽培奠定了重要理论基础。

关键词：暗褐网柄牛肝菌培养条件栽培基质胞外酶

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双侧颌下淋巴结受累猫抓病1例

中华全科医师杂志 2024年第5期23卷 508-510页

作者：侯慧明赵倩倩张飞娟马继军李崇巍天津市儿童医院风湿免疫科天津300134

报道1例表现为双侧颌下淋巴结先后受累的猫抓病患者的诊治过程,通过淋巴结活检组织病原微生物宏基因组测序确诊,以提高临床医生对本病的认识。

关键词：猫抓病巴尔通体感染淋巴结炎

外源添加苯甲酸对紫苏种子发芽和幼苗生长的影响

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中国农学通报 2024年第7期40卷 72-77页

作者：薛彤彤谢萌蒙孙辉李冲伟黑龙江大学生命科学学院/农业微生物技术教育部工程研究中心/黑龙江省寒地生态修复与资源利用重点实验室/黑龙江省普通高校微生物重点实验室哈尔滨150080 桦南农盛园食品有限公司黑龙江桦南154400

为探究外源苯甲酸胁迫对紫苏种子萌发、幼苗生长及叶片抗氧化酶活性的影响,添加苯甲酸对紫苏种子进行培养皿滤纸培养和室内盆栽实验,设置0、1、1.5、2、2.5、3 mmol/L 6个梯度处理,研究不同浓度苯甲酸胁迫对紫苏种子发芽率、发芽势、发... 详细信息

为探究外源苯甲酸胁迫对紫苏种子萌发、幼苗生长及叶片抗氧化酶活性的影响,添加苯甲酸对紫苏种子进行培养皿滤纸培养和室内盆栽实验,设置0、1、1.5、2、2.5、3 mmol/L 6个梯度处理,研究不同浓度苯甲酸胁迫对紫苏种子发芽率、发芽势、发芽指数、活力指数、紫苏幼苗生长以及抗氧化酶活性的影响。结果表明,随着苯甲酸浓度的增加,紫苏种子的发芽率、发芽势、发芽指数、活力指数总体表现为低浓度促进、高浓度抑制;紫苏幼苗的根重、胚根长、胚轴长和株鲜重均呈显著下降趋势,幼苗叶片过氧化氢酶和过氧化物酶活性呈显著下降趋势(P<0.05),超氧化物歧化酶活性呈先升高后下降趋势,在1.5 mmol/L达到最大。外源添加苯甲酸对紫苏种子萌发与苯甲酸浓度有关(低浓度促进高浓度抑制),对紫苏幼苗的生长具有抑制作用,证实了苯甲酸对紫苏的生长存在自毒作用。

关键词：紫苏苯甲酸种子萌发抗氧化酶化感物质

Landscape pattern and eco-hydrological characteristics at the upstream of Minjiang River,China

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Frontiers in Biology 2006年第4期1卷 455-462页

作者： li chongwei GE Jianping liU Shirong SUN Pengsen College of life Sciences Bejing Normal UniversityBeijing 100875China Institute of Forest Ecology Environment and ProtectionChinese Academy of ForestryBeijing 100091China College of Urban and Environment Sciences Tianjin Normal UniversityTianjin 300384China

Based on three scenes of Landsat 5 Thematic Mapper(TM)satellite images acquired on June 26,1994,12 land cover types were identified by the supervised classification *** precipitation,runoff,and normalized difference vegetation index(NDVI)data of six catchments were accumulated from April to September in 1992,1993,and 1995.A new eco-hydrological index,expressed by the difference between precipitation and runoff divided by the product of precipitation and NDVI,was used in this study to represent the eco-hydrological functions of different *** results were:(1)The selected six catchments at the upstream of Minjiang River,China were different in landscape patterns in terms of landscape type and *** were higher contagion,lower edge density and diversity index in the Shouxi catchments and lower contagion,higher edge density and diversity index in the Zagunao catchments.(2)Eco-hydrological indexes had remarkable differences among different *** highest eco-hydrological index was found in the Shouxi catchments,which indicated higher precipitation holding capacity of vegetation *** the lower eco-hydrological index was found in the Zagunao catchments,which indicated its lower precipitation holding capacity of vegetation.(3)High correlation was detected between the landscape indexes and eco-hydrological ***-hydrological index was positively correlated with landscape contagion in contrast with the negative correlation with landscape diversity and edge density.

关键词： precipitation runoff landscape pattern eco-hydrological index

A study on the relationship between vegetation pattern and environment in the upstream of Minjiang River,China

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Frontiers in Biology 2006年第2期1卷 187-194页

作者： li chongwei lin Yong liu lijuan Ge Jianping College of life Sciences Beijing Normal UniversityBeijing 100875China Chinese Academy of Sciences Beijing 100093China College of Urban and environment Sciences Tianjing Normal UniversityTianjin 300384China

The vegetation pattern in the upstream of Minjiang River,and its relationship with environment factors,such as landscape position(elevation,slope,aspect),precipitation and temperature and soil are analyzed in this *** data used in this paper were based on the landscape map derived from 1994 TM *** results were as follows:1)dominant landscape types were forest,shrub land and grassland,which were very similar in terms of area ratio(32.87%,31.85%and 28.44%,respectively);2)the patch shape of conifer forest and mixed forest was complicated while that of broad-leaved forest and cultivated land was simple;3)the fragmentation of conifer forest and mixed forest was serious in contrast with low fragmentation of broad-leaved forest and cultivated land;and 4)closed scrub and grassland had a high contagion and good connectivity while mixed forest had a lower contagion and bad *** addition,the vegetation distribution pattern of upstream of Minjiang River was closely related with elevation and temperature,but the relationship between vegetation and precipitation was not statistically significant.

关键词： upstream of Minjiang River vegetation pattern environmental factors 3S technologies

Heterostructured NiS_(2)@SnS_(2) hollow spheres as superior high-rate and durable anodes for sodium-ion batteries

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Science China Chemistry 2022年第7期65卷 1420-1432页

作者： chongwei li Jinchuan Hou Jingyi Zhang Xiaoyue li Shiqi Jiang Guoqing Zhang Zhujun Yao Tiancun liu Shenghui Shen Zhiqi liu Xinhui Xia Jie Xiong Yefeng Yang School of Materials Science and Engineering Zhejiang Sci-Tech UniversityHangzhou 310018China State Key Laboratory of Silicon Materials Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Provinceand School of Materials Science and EngineeringZhejiang UniversityHangzhou 310027China MOE Key Laboratory of Advanced Textile Materials and Manufacturing Technology Zhejiang Sci-Tech UniversityHangzhou 310018China Hangzhou Yanqu Information Technology Co. Ltd.Hangzhou 310003China

Tin-based sulfides have attracted increasing attention as anodes for sodium-ion batteries(SIBs) owing to their high theoretical capacity;however, the poor rate capability and inferior cycling stability caused by the low electrical conductivity, sluggish kinetics and drastic volume variations during cycling have greatly hampered their practical applications. Herein, heterostructured NiS_(2)@SnS_(2) hybrid spheres were delicately designed and constructed by anchoring interconnected SnS_(2) nanosheets on metalorganic frameworks(MOFs)-derived Ni S_(2) hollow spheres coupled with N-doped carbon skeleton through facile solvothermal and sulfurization/carbonization processes. The unique hollow heterostructure with highly conductive carbon matrix can effectively facilitate the charge transfer kinetics and ensure the desired buffer space while endowing more active sites and enhanced structural integrity, as demonstrated by the experimental and density functional theory(DFT) results. Benefitting from these merits, the NiS_(2)@SnS_(2) hybrid composite displays a high reversible capacity of 820 m Ah g^(-1) after 250 cycles at 1 A g^(-1), and retains a value of 673 m Ah g^(-1)after 1,300 cycles at 5 A g^(-1), manifesting the excellent high-rate and durable sodium storage behaviors when applied in SIBs. This study shall shed more light on the fabricating and interface engineering of other transition metal-based composite anodes for high-performance SIBs.

关键词： anode metal-organic frameworks heterostructure bimetallic sulfide sodium ion battery

Preparation and combustion properties of laminated sticks of B-CuO and B-Bi_(2)O_(3)

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Defence Technology（防务技术） 2024年第8期38卷 67-74页

作者： Haoyu Song Chenyang li Fubing Gao chongwei An Shijiao li Xuan Zhan Jianchen He School of Environment and Safety Engineering North University of ChinaTaiyuan 030051China Chongqing Military Agency of the Army Chongqing 400060China

To explore the composite process of B-CuO and B-Bi_(2)O_(3) two-component laminated sticks,obtain the corresponding sticks with good printing effect,and explore the energy release *** this study,boron,copper oxide,and bismuth trioxide powders were dispersed in the dispersed phase (DMF) using F_(2602) as a binder,and the construction of two-component B-CuO,B-Bi_(2)O_(3),three-component microcomposite,and three-component macro-composite sticks were realized with the help of double nozzle direct ink writing (DIW) technique *** resulting sticks were ignited by a nichrome wire energized with a direct current,and a high-speed camera system was used to record the combustion behavior of the sticks,mark the flame position,and calculate the rate of *** results showed that the B-CuO stick burning rate (42.11 mm·s^(-1)) was much higher than that of B-Bi_(2)O_(3)(17.84 mm·s^(-1)).The formulation with the highest CuO content (ω_(CuO)=58.7%) in the microscale composite of the sticks also had the fastest burning rate of 60.59 mm·s^(-1),as the CuO content decreased (ω_(CuO)=43.5%,29.3%),its burning rate decreased to 34.78 mm·s^(-1),37.97 mm·s^(-1).The stick with the highest copper oxide content(ω_(CuO)=60%) also possessed the highest burning rate (48.84 mm·s^(-1)) in the macro-composite sticks,and the burning rates of the macro-composite sticks with component spacing of 0.1 mm,0.2 mm,and 0.5 mm were 43.34 mm·s^(-1),48.84 mm·s^(-1),and 40.76 mm·s^(-1).

关键词： Boron-based thermite Direct ink writing linear burning rate Multi-component composite

植物源功能肽的制备、生理活性与应用研究进展

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食品科学 2021年第17期42卷 363-369页

作者：朱梦媛李冲伟黑龙江大学农业微生物技术教育部工程研究中心黑龙江哈尔滨150080 黑龙江大学生命科学学院黑龙江省寒地生态修复与资源利用重点实验室黑龙江哈尔滨150080

随着我国社会经济的飞速发展,居民的生活方式和疾病谱不断发生变化,吸烟、过量饮酒、缺乏锻炼、不合理膳食等不健康生活方式普遍存在,其引发的慢性疾病问题不断增加,进而使人们对营养保健食品的关注和需求提高。功能多肽独特的营养特性... 详细信息

随着我国社会经济的飞速发展,居民的生活方式和疾病谱不断发生变化,吸烟、过量饮酒、缺乏锻炼、不合理膳食等不健康生活方式普遍存在,其引发的慢性疾病问题不断增加,进而使人们对营养保健食品的关注和需求提高。功能多肽独特的营养特性和生理功能,以及在生物代谢调控中的重要作用逐渐被发现,特别是植物源多肽更因其天然、无毒副作用的特点受到国内外研究者普遍关注。针对近年来蛋白功能多肽在食品和医药方面的研究新进展,本文总结了植物源功能多肽的制备方法、生理活性以及在功能食品领域的应用前景,为植物源功能多肽的开发和应用提供理论参考。

关键词：功能多肽植物蛋白质保健食品

幼年型复发性腮腺炎合并选择性IgA缺陷一例

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中华口腔医学杂志 2020年第12期55卷 1003-1004页

作者：李维超李崇巍天津市儿童医院风湿免疫科 300134

幼年型复发性腮腺炎是一种儿童期少见的腮腺非阻塞性炎症性疾病,选择性IgA缺陷是一种抗体缺陷的原发性免疫缺陷病。本文报告1例幼年型复发性腮腺炎合并选择性IgA缺陷病例。

关键词：复发性腮腺炎幼年型原发性免疫缺陷病炎症性疾病 IgA缺陷儿童期选择性非阻塞性