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藻菌共生体处理猪场沼液的参数优化研究

工业水处理 2024年第1期44卷 96-102页

作者：王锌针张哲罗娜孙晨熊川懿王圣智万瀚宇陈建新李昆鄱阳湖环境与资源利用教育部重点实验室南昌大学资源与环境学院江西南昌330031

猪场沼液高色高浊、氮磷浓度高,采用藻菌共生体可同步高效去除碳氮磷、节能降耗、资源回收,符合新时代对污水处理的需求。从污染物去除、微生物生长等角度对光照强度、曝气量和藻菌接种比例这3个参数进行优选发现,曝气量对氮去除的影响... 详细信息

猪场沼液高色高浊、氮磷浓度高,采用藻菌共生体可同步高效去除碳氮磷、节能降耗、资源回收,符合新时代对污水处理的需求。从污染物去除、微生物生长等角度对光照强度、曝气量和藻菌接种比例这3个参数进行优选发现,曝气量对氮去除的影响最大,而3个参数对碳、磷去除的影响较小。经加权评价得出三因素排序:曝气量>光照强度>藻菌接种比例,最优参数组合:光照强度为550μmol/(m^(2)·s),曝气量为0.2 L/min,藻菌接种比例为1∶1。最优组的TP、COD、TN、NH_(4)^(+)-N分别为0.48、219.2、125.2、64 mg/L,TP、COD、TN、NH_(4)^(+)-N去除率分别为95.46%、88.58%、61.58%、80.21%。各组中藻菌絮体粒径均呈增大趋势,且随藻菌接种比例的增大而减小。

关键词：猪场沼液藻菌共生体参数优化脱氮除磷

2024年4月3日台湾省花莲县海域7.3级地震的快速产出参数

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地震科学进展 2024年第4期54卷 286-291页

作者：王钦莹陈鲲王永哲张旭张喆王子博中国地震局地球物理研究所北京100081

2024年4月3日07时58分(北京时间)在台湾省花莲县海域发生7.3级地震。中国地震局地球物理研究所在震后启动快速响应,组织相关领域研究人员对此次地震的震源模型、地震辐射能量等进行了估计,同时基于震源模型进行了震动图模拟、同震形变... 详细信息

2024年4月3日07时58分(北京时间)在台湾省花莲县海域发生7.3级地震。中国地震局地球物理研究所在震后启动快速响应,组织相关领域研究人员对此次地震的震源模型、地震辐射能量等进行了估计,同时基于震源模型进行了震动图模拟、同震形变场模拟。结果表明,此次地震发生在菲律宾海板块和欧亚板块的边界,以逆冲机制为主,呈现双侧破裂,能量集中在前约35 s内释放;极震区震动烈度可能达Ⅹ度以上,可能的受灾范围近35 000 km^(2);此次地震引起了显著的同震位移,最大水平向位移达到0.52 m、垂直向位移达到1.18 m。

关键词：台湾地震震源模型地震动强度预测地震辐射能量 InSAR 同震形变场

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计及新能源容量配置的水风光基地一体化运行研究

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长江技术经济 2024年第2期8卷 6-11,19页

作者：闫坤胡浩何尧玺陈雪康喆张亚军胡文中国长江电力股份有限公司武汉430010 中国电力工程顾问集团西南电力设计院有限公司成都610056

随着全球对清洁、可持续能源需求的增长,水、风、光等可再生能源在能源转型中扮演关键角色。传统上这些能源往往独立运行,难以实现最优协同。水风光基地的一体化运行,可以解决资源波动和电网接纳问题。研究表明,一体化运行可充分发挥水... 详细信息

随着全球对清洁、可持续能源需求的增长,水、风、光等可再生能源在能源转型中扮演关键角色。传统上这些能源往往独立运行,难以实现最优协同。水风光基地的一体化运行,可以解决资源波动和电网接纳问题。研究表明,一体化运行可充分发挥水电调峰能力,减少风光波动,提高新能源利用率;电量分配方案的选择应综合考虑外送水电站调峰能力及电网稳定性。通过新能源容量配置的深入研究,以期为提供清洁能源在能源系统中的高效利用提供理论基础和实践指导。

关键词：容量配置新能源利用一体化运行水风光基地

金沙江下游可再生能源出力及水风光互补特性分析

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长江技术经济 2024年第2期8卷 20-24,34页

作者：闫坤胡浩何尧玺陈雪胡文康喆张亚军中国长江电力股份有限公司武汉430010 中国电力工程顾问集团西南电力设计院有限公司成都610056

随着中国经济的不断发展和人民生活水平的提高,对清洁能源的需求逐渐增加,可再生能源在能源结构中的地位愈发凸显。以金沙江下游四川侧地区为研究对象,通过对风电和光伏的季、日出力特性展开分析,深入了解该地区的可再生能源潜力,研究... 详细信息

随着中国经济的不断发展和人民生活水平的提高,对清洁能源的需求逐渐增加,可再生能源在能源结构中的地位愈发凸显。以金沙江下游四川侧地区为研究对象,通过对风电和光伏的季、日出力特性展开分析,深入了解该地区的可再生能源潜力,研究水风光互补特性。研究成果可为可再生能源的高效利用提供科学依据。

关键词：金沙江下游可再生能源出力特性水风光互补

Quantifying glacial elevation changes in the central Qilian Mountains during the early 21^(st) century

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Journal of Mountain Science 2021年第11期18卷 2946-2959页

作者： ZHANG Qi-bing MO Cao-hu ZHAO Di JIANG Zong-li CHEN zhe-fu WU kun-peng ZHANG zhen College of Geography and Tourism Hunan University of Arts and ScienceChangde 415000China Hunan Province Key Laboratory of Coal Resources Clean-Utilization and Mine Environment Protection Hunan University of Science and TechnologyXiangtan 411201China Institute of International Rivers and Eco-Security Yunnan UniversityKunming 650091China School of Geomatics Anhui University of Science and TechnologyHuainan 232001China

Glaciers in the central Qilian Mountains provide important water resources for the arid Hexi corridor and Qaidam Basin;however,changes in these glaciers interact with climate ***-four bi-static image pairs of TerraSAR-X add-on for Digital Elevation Measurement(TanDEM-X)data,in addition to a Shuttle Radar Topography Mission-C/X band digital elevation model,and the technology of iterative differential synthetic aperture radar interferometry were used to carry out glacier elevation change analysis in the central Qilian Mountains in China during 2000–*** elevation changed with an average rate of(−0.47±0.06)m yr^(−1),while changes in elevation of(−0.51±0.06)m yr^(−1) and(−0.44±0.06)m yr^(−1) were found in the northern(including the Zoulangnan,Tuolai,and Tuolainan mountains)and southern(including the Shulenan and Hark mountains)regions,*** mean temperature has risen by 0.51℃(10 yr)^(−1)in the northern region and 0.48℃(10 yr)^(−1) in the southern region during 1989–2014;however,the change in amplitude of annual precipitation was 2.69 mm yr^(−1) in the northern region and 4.77 mm yr^(−1) in the southern region for the same *** changes can be ascribed as major driving factors for the differences in the changes in glacial elevation in the northern and southern *** types of glaciers existed in the region when considering the change in elevation of the glacial tongue and variation in the position of the glacial terminus:surging,advancing,intensively retreating,and slightly retreating *** elevation decreased more than 20 m on the part of glacier tongue,the glacier terminus position had commonly retreated more than 100 m.

关键词： Central Qilian Mountains Glacial elevation change Climate change TanDEM-X data Iterative differential synthetic aperture radar interferometry

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泰山油松空间分布特征及生长状态分析

山东理工大学学报（自然科学版） 2024年第4期38卷 1-7页

作者：王哲韩芳李传荣李坤翟慧宁王志勇山东理工大学建筑工程与空间信息学院山东淄博255049 山东农业大学林学院山东泰安271018 淄博市鲁山林场山东淄博255200

为探究泰山油松的空间分布特征及生长状态的变化规律,分析环境变量对泰山油松生长状态的影响,基于数字高程模型(DEM)和森林资源清查“一张图”数据,建立油松(Pinus tabulaeformis)空间分布的地形信息图谱,提取研究区2000—2018年油松生... 详细信息

为探究泰山油松的空间分布特征及生长状态的变化规律,分析环境变量对泰山油松生长状态的影响,基于数字高程模型(DEM)和森林资源清查“一张图”数据,建立油松(Pinus tabulaeformis)空间分布的地形信息图谱,提取研究区2000—2018年油松生长季的最大NDVI表征油松的生长状态并分析其在不同立地条件下的变化规律。结果表明:(1)油松纯林主要分布在海拔850~1500 m的北坡、东北坡和西北坡(面积占比为40%~90%),油松混交林主要分布在海拔400~1050 m、1300~1450 m的山坡、山谷、山脊和东北坡、东坡、西南坡(面积占比为20%~30%);(2)2000—2018年,油松整体的生长状态呈向好的趋势,NDVI显著增大(9.82%)和极显著增大(13.56%)区域的面积占比明显大于显著减小(4.48%)和极显著减小(2.69%)区域的面积占比;(3)油松林在海拔600~1400 m、坡度35 cm的区域和北坡、西坡、西北坡的生长状态较好。通过对泰山油松林的空间分布特征及其在不同立地条件下生长状态的分析,总结了利于油松生长的立地条件,为泰山油松林健康养护和古树名木保护提供了科学依据。

关键词：油松空间分布特征归一化植被指数(NDVI) 地形信息图谱立地因子

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双层高温气体通道热膨胀分析及解决方案研究

机械工程师 2024年第1期 150-153页

作者：武俊虎秦峥嵘宋志佳袁肖民刘哲黄琨中国航发沈阳发动机研究所沈阳110015

在轮盘动力源试验器试验过程中,所需的压缩空气介质为高温气体,而且试验件排气道为特殊的双层环形结构形式,试验时必然存在沿轴向的热膨胀。文中研究了一种新型的双层高温气体通道膨胀补偿器,该补偿器加工制作方便,可以解决特殊的双层... 详细信息

在轮盘动力源试验器试验过程中,所需的压缩空气介质为高温气体,而且试验件排气道为特殊的双层环形结构形式,试验时必然存在沿轴向的热膨胀。文中研究了一种新型的双层高温气体通道膨胀补偿器,该补偿器加工制作方便,可以解决特殊的双层通道热膨胀问题。

关键词：高温气体通道热膨胀双层环型结构

Fossil fruits of Firmiana and Tilia from the middle Miocene of South Korea and the efficacy of the Bering land bridge for the migration of mesothermal plants

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Plant Diversity 2021年第6期43卷 480-491页

作者： Lin-Bo Jia Gi-Soo Nam Tao Su Gregory W.Stull Shu-Feng Li Yong-Jiang Huang zhe-kun Zhou CAS Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming 650204China Gongju National University of Education 27Ungjin-roGongju-siChungcheongnam-do 32553South Korea CAS Key Laboratory of Tropical Forest Ecology Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMengla 666303China University of the Chinese Academy of Sciences Beijing 100049China Germplasm Bank of Wild Species Kunming Institute of BotanyChinese Academy of SciencesKunmingYunnan 650201China Department of Botany Smithsonian InstitutionWashingtonDC 20013USA

Determining whether the high-latitude Bering land bridge(BLB)was ecologically suitable for the migration of mesothermal plants is significant for Holarctic phytogeographic *** studies provide a critical source of data on the latitudinal positions of different plant lineages at different times,permitting assessment of the efficacy of the BLB for *** we report exceptionally preserved fossils of Firmiana and Tilia endochrysea from the middle Miocene of South *** represents a new reliable record of Firmiana and the first discovery of the *** lineage in the fossil record of *** occurrence of these fossils in South Korea indicates that the two lineages had a distribution that extended much farther north during the middle Miocene,but they were still geographically remote from the *** light of the broader fossil record of Asia,our study shows that,in the middle Miocene,some mesothermal plants apparently inhabited the territory adjacent to the BLB and thus they were possibly capable of utilizing the BLB as a migratory *** other mesothermal plants,such as Firmiana and the *** lineages,however,are restricted to more southern regions relative to the BLB based on current fossil *** lineages may have been ecologically unable to traverse the BLB,which raises questions about the efficacy of the BLB as a universal exchange route for mesothermal plants between Asia and North America during the middle Miocene.

关键词： Asia Bering land bridge Biogeography Middle Miocene Malvaceae

Nitrogen absorption by alpine forage species based on 15N tracer technique in a hydroponic culture

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Journal of Mountain Science 2021年第12期18卷 3190-3199页

作者： LIU Yan-fang WANG Wen-ying MA Xiao-lin LIU pan ZHOU Hua-kun CHEN zhe YANG Chong GUAN Jin-hong The College of Geography Sciences Qinghai Normal UniversityXining 810008China School of Life Sciences Qinghai Normal UniversityXining 810008China Key Laboratory of Restoration Ecology in Cold Region of Qinghai Province Northwest Plateau Institute of BiologyChinese Academy of SciencesXining 810008China Academy of Plateau Science and Sustainability Qinghai Normal UniversityXining 810008China

Based on 15N tracer technique,absorption of different concentrations of ammonium nitrogen(N-NH^(4+)),nitrate nitrogen(N-NO^(3-))and glycine(NGly)by root of six species of alpine forage(Puccinellia tenuiflora,Poa crymophila,Festuca sinensis,Elymus nutans,Elymus sibiricus and Bromus inermis)was studied in a hydroponic *** uptake kinetic parameter was analyzed according to Michaelis-Menten *** Michaelis-Menten equation represents the velocity equation for the relationship between the initial rate of an enzymatic reaction and the substrate *** result showed that the absorption range of ammonium nitrogen,nitrate nitrogen and glycine by root of six species of alpine plant were 1.1-20.9μmol·g^(-1)·h^(-1),0.4-3.4μmol·g^(-1)·h^(-1) and 0.1-3.7μmol·g^(-1)·h^(-1),which accounts for 68.8%-74.7%,12.0%-27.0%and 4.3%-13.4%of total absorptivity,*** six kinds of ***,***,***,***,*** and *** showed significant difference in nitrogen *** the same concentration,the absorption of nitrogen in different forms of the same herbage is *** absorptive amount of ammonium nitrogen was the highest among them,then the glycine,the nitrate nitrogen was least *** results could provide a theoretical basis for nitrogen utilization in alpine *** example,*** showed a much higher ability of absorbing nitrogen nutrition in a high salt environment and could be a more suitable herbage to be planted in saline-alkali soil in the Qinghai-Tibet Plateau as compared with ***.

关键词： Alpine forage Organic nitrogen Inorganic nitrogen Absorption kinetic parameters