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常见菌材主要营养成分及内含物质的分析

湖南农业大学学报（自然科学版） 2022年第4期48卷 436-442页

作者：苏世贤李婕吴安波黄习妍陈孟谈刘翀须文田风华徐彦军李伟贵州大学农学院贵州贵阳550025 贵州大学食用菌研究院贵州贵阳550025 贵州高原蓝梦菇业科技有限公司贵州毕节551500 贵州省高等学校设施蔬菜工程研究中心贵州贵阳550025

为筛选适宜食用菌栽培的速生、优质菌材,以在黔北地区收集到的刺槐、肉桂、水青冈、山白树等13个科17个属共17种菌材木段为试材,测定各菌材样品中的碳素成分含量、矿质元素含量和其他内含物成分。经检测、分析得知:17种菌材纤维素含量为... 详细信息

为筛选适宜食用菌栽培的速生、优质菌材,以在黔北地区收集到的刺槐、肉桂、水青冈、山白树等13个科17个属共17种菌材木段为试材,测定各菌材样品中的碳素成分含量、矿质元素含量和其他内含物成分。经检测、分析得知:17种菌材纤维素含量为35%~53%,半纤维素含量为15%~29%,木质素含量为18%~30%,钾、钙、磷、镁、铜、锰、锌含量分别为602~3270、1080~7590、14~304、153~905、0.83~3.31、1.71~106.00、2.00~15.00 mg/kg,pH值为4.24~6.72,果胶含量为5.78~12.40 g/kg,总黄酮含量为93.6~4262.8 mg/kg,单宁含量为0.01%~9.16%。木质纤维素及矿质元素有利于食用菌的生长发育,单宁、果胶、总黄酮和不适宜的pH值则抑制食用菌的生长。综合分析表明,枫香树、肉桂、山毛榉、枳椇树、苦郎树和水青冈比较适合作菌材,而马桑树、梨树和刺槐不适合用来栽培食用菌。

关键词：食用菌菌材营养成分纤维素矿质元素

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高寒高海拔地区冬季混凝土骨料加热技术研究

智能城市应用 2024年第7期7卷 69-71页

作者：张峰华杨忠加田振伟江哲青海黄河上游水电开发有限责任公司青海西宁810001 中国水利水电第十一工程局有限公司河南郑州450001

目前,中国正处于新能源快速发展、建设的时期,随着风电、光伏等新能源项目的开发建设,很多新能源工程处于高原寒冷地带当中,混凝土骨料的应用会受到一定的限制,技术人员需要运用相应的加热技术展开施工。在高寒高海拔地区,冬季气温十分... 详细信息

目前,中国正处于新能源快速发展、建设的时期,随着风电、光伏等新能源项目的开发建设,很多新能源工程处于高原寒冷地带当中,混凝土骨料的应用会受到一定的限制,技术人员需要运用相应的加热技术展开施工。在高寒高海拔地区,冬季气温十分寒冷,常常会降至零下甚至更低,这种极端的气候条件对于混凝土施工带来了一定的困难,尤其是混凝土骨料在低温条件下容易结冰,导致混凝土的质量受到影响,而研究高寒高海拔地区冬季混凝土骨料加热技术具有重要的实际意义。因此,本篇文章对于高寒高海拔地区冬季混凝土骨料加热技术及措施的应用展开了相应的研究。

关键词：高寒高海拔地区冬季混凝土骨料加热技术

Gap engineering of sandwich plasmonic gap nanostructures for boosting plasmon-enhanced electrocatalysis

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Nano Research 2023年第7期16卷 8961-8969页

作者： Lu Cheng Fengxia Wu Yu tian Xiali Lv fenghua Li Guobao Xu Hsien-Yi Hsu Yongjun Zhang Wenxin Niu State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China Yanshan Branch of Beijing Chemical Research Institute SinopecBeijing 102500China University of Science and Technology of China Hefei 230026Chin a 4 School of Energy and Environment Department of Materials Science and EngineeringCity University of Hong KongKowloon TongHong Kong 999077China Shenzhen Research Institute of City University of Hong Kong Shenzhen 518057China Key Laboratory of Functional Polymer Materials and State Key Laboratory of Medicinal Chemical Biology Institute of Polymer ChemistryCollege of ChemistryNankai UniversityTianjin 300071China

Plasmonic catalysis is emerging as a dynamic field in heterogeneous catalysis and holds great promise for the efficient utilization of solar *** to the development of plasmonic catalysis is the design of efficient plasmonic *** this report,plasmonic gap nanostructures(PGNs)on the basis of Au@poly(o-phenylenediamine)(POPD)@Pd sandwich nanostructures are synthesized as plasmonic nanocatalysts by an in-situ reduction synthetic strategy,which allows for the precise engineering of the POPD gap size between plasmonic Au and catalytic Pd *** introduction of conducting POPD nanogap in PGNs not only effectively enhances their light harvesting capability,but also provides an effective charge transfer channel for harnessing the photogenerated hot charge *** this respect,distinct gap-dependent performances in plasmon-enhanced electrocatalysis of ethanol oxidation reactions(EOR)are demonstrated with the PGN nanocatalysts and over 2.5 folds of enhancement can be achieved.A volcano plot is derived to describe the relationship between the catalytic activities and gap size of the PGN nanocatalysts,which is well explained by the interplay of their light harvesting and charge transport *** results highlight the importance of gap engineering in PGNs for plasmonic catalysis and offer the promise of developing efficient plasmonic nanocatalysts for other heterogeneous catalytic reactions.

关键词： plasmonic gap nanostructures electrocatalysis ethanol oxidation reactions light harvesting charge transport

大宁—吉县区块8号煤层薄层夹矸螺旋CT扫描精细表征

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能源与环保 2023年第10期45卷 63-68页

作者：田丰华李小刚朱文涛戴瑞瑞师斌斌洪星任勇陈国辉何睿中石油煤层气有限责任公司勘探开发建设分公司陕西西安710068 北京润泽创新科技有限公司北京100120

影响煤层气勘探获得高产的因素有很多,煤层结构中夹矸的存在就是其中之一。传统的技术手段在表征煤层夹矸中有诸多不足,螺旋CT扫描具有全岩心大视域优势,精度达到毫米级,通过扫描获取灰度横切片,生成岩心灰度平均值曲线,确定煤岩灰度基... 详细信息

影响煤层气勘探获得高产的因素有很多,煤层结构中夹矸的存在就是其中之一。传统的技术手段在表征煤层夹矸中有诸多不足,螺旋CT扫描具有全岩心大视域优势,精度达到毫米级,通过扫描获取灰度横切片,生成岩心灰度平均值曲线,确定煤岩灰度基线和夹矸灰度值范围,精准划分煤层中夹矸,实现煤层结构的精细定量表征。根据夹矸平均厚度、夹矸累积厚度占比这2个参数,将大宁—吉县区块煤层结构类型划分为4种模式,即A类夹矸厚且少,B类夹矸厚且多,C类夹矸薄且少,D类夹矸薄且多。煤层结构的精细三维表征对煤层气单井储层精细评价及高产因素研究具有指导意义。

关键词：煤层气煤层结构螺旋CT 煤层夹矸识别

Lx2-32c,a novel semi-synthetic taxane,exerts antitumor activity against prostate cancer cells in vitro and in vivo

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Acta Pharmaceutica Sinica B 2017年第1期7卷 52-58页

作者： Guangyao Lv Dengjun Sun Jingwen Zhang Xiaoxia Xie Xiaoqiong Wu Weishuo Fang Jingwei tian Chunhong Yan Hongbo Wang fenghua Fu School of Pharmacy Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University)Ministry of EducationYantai University Departments of Medical Oncology Affiliated Yuhuangding HospitalMedical College of Qingdao University The Military Affiliated General Hospital of Beijing PLA State Key Laboratory of Bioactive Substances and Functions of Natural Medicines Institute of Materia MedicaChinese Academy of Medical Sciences and Peking Union Medical College GRU Cancer Center Georgia Regents University

Tubulin has been shown to be an effective target for the development of cytotoxic agents against prostate cancer. Previously, we reported that Lx2-32 c is an anti-tubulin agent with high binding affinity to tubulin. In this study, we investigated the potential of Lx2-32 c to act as an effective cytotoxic agent in the treatment of prostate cancer. MTT assays showed that Lx2-32 c was cytotoxic to all tested prostate cancer cell lines. The Lx2-32c-treated cells typically exhibited a rounded morphology associated with the onset of apoptosis, as evidenced by immunocytochemical staining. Human prostate cancer cell lines treated with Lx2-32 c arrest in the G2/M phase of the cell cycle and the treatment is associated with an increased ratio of cells in the sub-G0/G1 phase as determined by flow cytometry. Furthermore, expression of the cleaved form of poly(ADP-ribose) polymerase in prostate cancer cell lines treated with Lx2-32 c was shown by Western blotting assay. Xenograft implants of LNCa P and PC3-derived tumors in nude mice showed that Lx2-32 c treatment significant inhibited tumor growth with effects equivalent to those of docetaxel. These findings demonstrate the potential of Lx2-32 c as a candidate antitumor agent for the treatment of prostate cancer.

关键词： Lx2-32c Cephalomannine Prostate cancer Microtubule Cell cycle arrest Apoptosis

枯草芽孢杆菌源抗菌肽发酵条件优化及其对雏鸡的抗炎作用

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现代畜牧兽医 2024年第6期 19-23页

作者：于天明田玉虎刘春青李建喜王磊李凤华山东迅达康兽药有限公司山东济南250306 中国农业科学院兰州畜牧与兽药研究所甘肃兰州730050 济南市畜牧技术推广站山东济南250102

研究旨在优化枯草芽孢杆菌源抗菌肽发酵条件并探究其对雏鸡的抗炎作用。试验采用单因素方法筛选出适合枯草芽孢杆菌K4发酵的最佳氮源、碳源及初始pH值、温度、接种量。用筛选出的最佳发酵培养基和条件在50 L发酵罐内发酵1株能产抗菌肽... 详细信息

研究旨在优化枯草芽孢杆菌源抗菌肽发酵条件并探究其对雏鸡的抗炎作用。试验采用单因素方法筛选出适合枯草芽孢杆菌K4发酵的最佳氮源、碳源及初始pH值、温度、接种量。用筛选出的最佳发酵培养基和条件在50 L发酵罐内发酵1株能产抗菌肽的枯草芽孢杆菌K4,并将最终发酵液添加20%水溶性淀粉进行喷雾干燥。喷干后的菌粉使用大肠杆菌O2作为指示菌进行体外抑菌试验和雏鸡抗炎试验。结果显示,试验筛选出的最佳氮源为蛋白胨,最佳碳源为葡萄糖,培养基初始pH值为7.0,发酵温度为37℃,接种量为5%。喷干后的菌粉活菌数为4.60×10^(10)CFU/g。体外抑菌试验结果显示喷干菌粉对O2的抑菌圈为30 mm。雏鸡抗炎试验结果显示,大肠杆菌感染后的雏鸡灌服抗菌肽K4后的存活率为65%,比药物对照组高18.18%,说明枯草芽孢杆菌K4具有抑制大肠杆菌、降低雏鸡感染大肠杆菌后的死亡率的作用。

关键词：抗菌肽枯草芽孢杆菌K4 体外抑菌抗炎

Spatial Distribution of Surface Soil Organic Carbon Density and Related Factors along an Urbanization Gradient in Beijing

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Journal of Resources and Ecology 2020年第5期11卷 508-515页

作者： tian Yuhong LIU fenghua WANG tiantian State Key Laboratory of Earth Surface Processes and Resource Ecology Faculty of Geographical ScienceBeijing Normal UniversityBeijing 100875China

Urban surface soil has a unique set of structures and processes that affect surface soil organic carbon density(SOCdensity) and its spatial variations. Using Beijing as a case study, and assisted by field investigations and experiments, we analyzed the spatial distribution of SOCdensity in different land use types and functional regions, and assessed associated factors such as urbanization level, the physiochemical properties of soil and plant configurations. The present study aims to provide useful information about the mechanisms driving soil organic carbon and climate change in developing and developed areas in urbanized regions like Beijing. Results indicate that P is the main factor positively influencing SOCdensity in most regions. Because of the specific interference directly related to human beings in urban areas, with decreases in the urbanization level, more physiochemical factors of soil can influence SOCdensity. SOCdensity under grasses is not significantly different from that under other plant compositions. Urbanization processes decrease the heterogeneity of the spatial pattern of SOCdensity in most land use types, but increased its contents when the area reached a developed level in Beijing. More factors related to human interference and spatial variation of surface soil carbon storage, especially under impervious land in urban areas, should be considered in future studies.

关键词： soil organic carbon density urbanization soil physiochemical properties plant configuration

山东省沿黄地区规模化牛场全株玉米青贮发酵品质及营养价值评价

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黑龙江畜牧兽医 2024年第15期 78-83,98页

作者：魏立鹏郭艺璇程群徐进栋程明林英庭朱风华青岛农业大学动物科技学院山东青岛266109 青岛农业大学理学与信息科学学院山东青岛266109 青岛市畜牧兽医研究所山东青岛266100

为了评定山东省沿黄地区全株玉米青贮发酵品质和营养价值,以了解规模化牛场青贮玉米的制作现状,试验于2023年3—5月份分别采集沿黄地区滨州市、东营市、德州市、菏泽市、济宁市、济南市、聊城市、泰安市、淄博市的规模化奶牛场(51个)和... 详细信息

为了评定山东省沿黄地区全株玉米青贮发酵品质和营养价值,以了解规模化牛场青贮玉米的制作现状,试验于2023年3—5月份分别采集沿黄地区滨州市、东营市、德州市、菏泽市、济宁市、济南市、聊城市、泰安市、淄博市的规模化奶牛场(51个)和肉牛场(54个)全株玉米青贮饲料样品共105份,测定样品的发酵品质和营养成分,参照《青贮玉米品质分级》(GB/T 25882—2010)对全株玉米青贮品质进行分级。结果表明:淄博市全株玉米青贮中乳酸含量显著高于其他市(P0.05)。泰安市全株玉米青贮饲料品质为一级;济南市、聊城市、滨州市为二级;淄博市、济宁市、德州市、东营市和菏泽市为三级。说明沿黄地区全株玉米青贮饲料品质良好。

关键词：山东省沿黄地区全株青贮玉米发酵品质营养价值

A Distributed-Centralized Dynamic Task Allocation Algorithm for UAVs Tracking Moving Targets

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A Distributed-Centralized Dynamic Task Allocation Algorithm ...