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Responses of nitrogen cycling and related microorganisms to brackish wetlands formed by evapotranspiration

Pedosphere 2024年第1期34卷 252-266页

作者： Jiaohui FANG tianshu lu Jian LIU Shangbin HE Xiufeng YANG Huashan DOU Honghai ZHANG School of Life Sciences Qufu Normal UniversityQufu 273100China Environment Research Institute Shandong UniversityQingdao 266237China Hulunbuir Academy of Inland Lakes in Northern Cold&Arid Areas Hulunbuir 021000China

Elevated evapotranspiration due to warmer air temperature could raise salinity and nutrient levels of some inland wetlands, potentially impacting nitrogen cycling. To characterize the impact of high evapotranspiration on soil microbial nitrogen cycling in inland wetlands, we compared freshwater and brackish marsh(or non-marsh) wetlands in terms of sediment ammonia-oxidizing rate(AOR), denitrifying rate(DR), and related microbial communities in a typical inland basin, the Hulun Lake basin, in China. Results showed that marsh ecosystems(ME) exhibited 31% higher AOR and 65% higher DR than non-marsh ecosystems(NE). For NE, freshwater non-marsh wetland exhibited 12% higher AOR than brackish non-marsh wetland. This was probably due to the inhibitory effects of high NH_4~+ and salinity levels on ammonia-oxidizing archaea in brackish non-marsh wetland. Conversely, DR in brackish non-marsh wetland was 23% higher than that in freshwater non-marsh wetland, with total organic carbon(TOC) significantly influencing this difference,suggesting that the higher DR in brackish non-marsh wetland was mainly due to its higher TOC level. For ME, due to the direct and indirect interference of salinity, brackish marsh wetland displayed 26% lower AOR and 19% lower DR than freshwater marsh wetland. Besides, brackish wetlands harbored distinct ammonia-oxidizing and denitrifying microbial communities compared to freshwater wetlands. The assembly of these communities was dominated by stochastic processes, while brackish wetlands exhibited more prominent deterministic processes than freshwater wetlands. Overall, high evapotranspiration altered activities and community characteristics of ammonia oxidizers and denitrifiers in inland brackish wetlands by enhancing salinity and nutrient levels,while emergent plants occurring in ME could mitigate the adverse effects of salt stress of inland brackish wetlands on nitrogen cycling.

关键词： ammonia-oxidizing archaea ammonia-oxidizing bacteria aquatic plants denitrifying bacteria nitrogen transformation inland wetlands

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不同进水方式对污泥床膨胀的影响

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黑龙江科技大学学报 2024年第4期34卷 572-577页

作者：贾学斌吴俊飞鲁天舒黑龙江大学建筑工程学院哈尔滨150080 黑龙江省村镇饮水安全工程技术研究中心哈尔滨150080

为了探究不同进水方式对污泥膨胀床性能的影响,设计一种侧向进水物理模型和四种不同进水夹角的底部进水口的数值模型,对比分析计算流体力学的三维模拟与实物模型的运行状态。结果表明:侧向进水方式污泥床在进水时膨胀速率比底部进水方式... 详细信息

为了探究不同进水方式对污泥膨胀床性能的影响,设计一种侧向进水物理模型和四种不同进水夹角的底部进水口的数值模型,对比分析计算流体力学的三维模拟与实物模型的运行状态。结果表明:侧向进水方式污泥床在进水时膨胀速率比底部进水方式快19%;进水流量对两种进水方式的污泥膨胀高度及死区面积的减少有显著影响,在模拟中倾角为15°时,流量提升2.7倍,死区面积减少87%;底部圆锥倾角的变化,对死区产生显著的影响;侧向进水时,流场分为左右两部分,未有明显的优先流,底部进水则存在沿中轴线前进的主流,两侧的速度场分布梯度较小。

关键词：生物反应器厌氧颗粒污泥进水方式 CFD 死区

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区域高分辨率数值预报检验评估系统

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气象科技进展 2024年第1期14卷 32-37页

作者：陆天舒孙鑫陈昊明李普曦朱峰霍庆周佰铨杨琳韵中国气象科学研究院灾害天气国家重点实验室北京100081 内蒙古气象台呼和浩特010051 国家气象信息中心北京100081

近年来我国区域高分辨率数值预报业务发展迅速,目前传统检验方法已不能满足高分辨率模式降水检验评估需求。区域高分辨率数值预报检验评估系统在吸收降水传统检验方法优势的同时,融入基于降水发展演变过程的检验评估方法,旨在建立一套... 详细信息

近年来我国区域高分辨率数值预报业务发展迅速,目前传统检验方法已不能满足高分辨率模式降水检验评估需求。区域高分辨率数值预报检验评估系统在吸收降水传统检验方法优势的同时,融入基于降水发展演变过程的检验评估方法,旨在建立一套适用于高时空分辨率观测资料的精细化降水检验评估系统,为促进区域模式改进和高分辨率数值预报产品的偏差理解提供了重要参考,也为理解区域数值预报的模拟能力及其偏差提供了新的视角。

关键词：数值天气预报高分辨率模式检验评估

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不可压缩紊流近壁缓冲层区流速分布的计算研究

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武汉大学学报（工学版） 2022年第8期55卷 781-785页

作者：吕天舒黄社华庄克云武汉大学水利水电学院湖北武汉430072

利用标准k-ε模型及增强壁面处理对平板间不可压缩紊流进行数值模拟,并将所得近壁区无量纲流速u+的计算结果与试验值、标准壁面函数的理论值进行对比。对于与试验值接近而与标准壁面函数差别较大的缓冲层区,用曲线拟合的方法得到缓冲层... 详细信息

利用标准k-ε模型及增强壁面处理对平板间不可压缩紊流进行数值模拟,并将所得近壁区无量纲流速u+的计算结果与试验值、标准壁面函数的理论值进行对比。对于与试验值接近而与标准壁面函数差别较大的缓冲层区,用曲线拟合的方法得到缓冲层区域无量纲流速u+的经验公式,改进了传统的标准壁面函数公式。多种雷诺数工况的算例验证表明,所得的缓冲层流速分布公式与实验值均吻合良好。

关键词：缓冲层区流速分布紊流模型数值模拟壁面函数紊流边界层

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程序性细胞死亡蛋白-1抑制剂不良反应的热点分析

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沈阳药科大学学报 2023年第2期40卷 212-218页

作者：叶美辰卢天舒魏峰崔雷张斯扬项荣武沈阳药科大学医疗器械学院辽宁本溪117004 北部战区总医院医学信息数据室辽宁沈阳110016 中国医科大学医学信息学院辽宁沈阳1100122

目的分析程序性细胞死亡蛋白-1抑制剂(programmed cell death receptor 1,PD-1)药物不良反应的研究热点,了解该领域发展现状并为未来研究提供方向和参考。方法以PubMed数据库中收录的关于PD-1抑制剂的药物不良反应文献为来源,以“antine... 详细信息

目的分析程序性细胞死亡蛋白-1抑制剂(programmed cell death receptor 1,PD-1)药物不良反应的研究热点,了解该领域发展现状并为未来研究提供方向和参考。方法以PubMed数据库中收录的关于PD-1抑制剂的药物不良反应文献为来源,以“antineoplastic agents,immunological/adverse effects”[Mesh]and“programmed cell death 1 receptor/antagonists and inhibitors”[Mesh]为检索策略,以2010-2020年为限定时间。采用书目共现分析系统软件抽取主要主题词/副主题词,获得高频主题词论文矩阵,利用gCluTO软件对其进行聚类分析。结果检索得到411篇文献,20个高频主题词,可视化分析后得到联合治疗、非小细胞肺癌、黑色素瘤和疗法比较4个聚类。结论皮炎是程序性细胞死亡蛋白-1抑制剂较常见的不良反应,非小细胞肺癌患和晚期黑色素瘤为在抗PD-1治疗上最常被研究的肿瘤类型,Nivolumab是最常被研究的PD-1抑制剂类药物,对相关科学研究有一定帮助。

关键词：程序性细胞死亡蛋白-1抑制剂免疫检查点抑制剂不良反应研究热点聚类分析

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有机白菜的贮藏方法和技术研究

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现代农业研究 2018年第1期24卷 119-120页

作者：吕天舒黑龙江省科学技术情报研究院

有机白菜在黑龙江省各地均可栽培种植, 是冬春两季的主要蔬菜.为改善有机白菜作为食材的质量, 可选择贮藏性好的品种, 通过适用的贮藏方法与技术, 如, 堆藏、埋藏、棚窖贮藏、通风库贮藏、塑料薄膜包装等可以实现有机白菜品质佳的贮藏.

关键词：有机白菜贮藏方法和技术

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基于全视野数字图像的能见度估算方法

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应用气象学报 2018年第6期29卷 701-709页

作者：陆天舒杨俊邓敏杜传耀中国气象科学研究院灾害天气国家重点实验室/雷电物理和防护工程实验室北京100081 广东省广州市从化区气象局广州501900 北京市气象探测中心北京100176

基于全视野数字图像的能见度估算方法是将全视野图像大气透射率与大气能见度通过曲线拟合方法建立联系,得到估算模型进行能见度估算。首先通过历史全视野图像和对应时刻的大气能见度建立样本数据集,再利用暗原色先验理论获取全视野图像... 详细信息

基于全视野数字图像的能见度估算方法是将全视野图像大气透射率与大气能见度通过曲线拟合方法建立联系,得到估算模型进行能见度估算。首先通过历史全视野图像和对应时刻的大气能见度建立样本数据集,再利用暗原色先验理论获取全视野图像大气透射率,通过多项式拟合方法建立离散样本数据集中大气透射率与对应时刻大气能见度的关系,即全视野图像能见度估算模型,最终将所需估算时刻的数字图像输入估算模型进行能见度估算,得到大气能见度数值。结果表明:建立的基于全视野数字图像能见度估算模型在环境光照均匀时大气能见度估算值与能见度实测值有较好的一致性,可作为前向散射仪的补充观测方法,弥补其采样存在的局限性。

关键词：全视野图像暗原色先验数字图像处理能见度

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Associations of sleeping patterns and isotemporal substitution of other behavior with the prevalence of CKD in Chinese adults

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Frontiers of Medicine 2024年第2期18卷 303-314页

作者： Yi Ding Xiaoli Xu Zhuojun Xin Qiuyu Cao Jiaojiao Huang Xianglin Wu Yanan Huo Qin Wan Yingfen Qin Ruying Hu Lixin Shi Qing Su Xuefeng Yu Li Yan Guijun Qin Xulei Tang Gang Chen Min Xu Tiange Wang Zhiyun Zhao Zhengnan Gao Guixia Wang Feixia Shen Zuojie luo Li Chen Qiang Li Zhen Ye Yinfei Zhang Chao Liu Youmin Wang Tao Yang Huacong Deng lulu Chen tianshu Zeng Jiajun Zhao Yiming Mu Shengli Wu Yuhong Chen Jieli lu Weiqing Wang Guang Ning Yu Xu Yufang Bi Mian Li Department of Endocrine and Metabolic Diseases Shanghai Institute of Endocrine and Metabolic DiseasesRuijin HospitalShanghai Jiao Tong University School of MedicineShanghai200025China Shanghai National Clinical Research Center for Metabolic Diseases Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of ChinaShanghai Key Laboratory for Endocrine TumorState Key Laboratory of Medical GenomicsRuijin HospitalShanghai Jiao Tong University School of MedicineShanghai200025China Jiangxi Provincial People’s Hospital Affiliated to Nanchang UniversityNanchang330000China Department of Endocrinology The Affiliated Hospital of Southwest Medical UniversityLuzhou646000China Department of Endocrinology The First Affiliated Hospital of Guangxi Medical UniversityNanning530000China Zhejiang Provincial Center for Disease Control and Prevention Hangzhou310000China Department of Endocrinology Affiliated Hospital of Guiyang Medical UniversityGuiyang550000China Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai200000China Tongji Hospital Tongji Medical CollegeHuazhong University of Science and TechnologyWuhan430000China Sun Yat-sen Memorial Hospital Sun Yat-sen UniversityGuangzhou510000China Department of Endocrinology The First Affiliated Hospital of Zhengzhou UniversityZhengzhou450000China Department of Endocrinology The First Hospital of Lanzhou UniversityLanzhou730000China Fujian Provincial Hospital Fujian Medical UniversityFuzhou350000China Dalian Municipal Central Hospital Affiliated of Dalian Medical UniversityDalian116000China Department of Endocrinology The First Hospital of Jilin UniversityChangchun130000China Department of Endocrinology The First Affiliated Hospital of Wenzhou Medical UniversityWenzhou325000China Qilu Hospital of Shandong University Jinan250000China Department of Endocrinology The Second Affiliated Hospital of Harbin Medical UniversityHarbin150000China Department of Endocrinology Cen

Studies have found a U-shaped relationship between sleep duration and chronic kidney disease(CKD)risk,but limited research evaluated the association of reallocating excessive sleep to other behavior with *** included 104538 participants from the nationwide cohort of the Risk Evaluation of Cancers in Chinese Diabetic Individuals:A Longitudinal Study,with self-reported time of daily-life *** isotemporal substitution models,we found that substituting 1 h of sleeping with sitting,walking,or moderate-to-vigorous physical activity was associated with a lower CKD ***-time physical activity displacement was associated with a greater prevalence reduction than occupational physical activity in working *** stratified analysis,a lower CKD prevalence related to substitution toward physical activity was found in long *** pronounced correlations were observed in long sleepers with diabetes than in those with prediabetes,and they benefited from other behavior substitutions toward a more active *** U-shaped association between sleep duration and CKD prevalence implied the potential effects of insufficient and excessive sleep on the kidneys,in which the pernicious link with oversleep could be reversed by time reallocation to physical *** divergence in the predicted effect on CKD following time reallocation to behavior of different domains and intensities and in subpopulations with diverse metabolic statuses underlined the importance of optimizing sleeping patterns and adjusting integral behavioral composition.

关键词： sleep physical activity chronic kidney disease isotemporal substitution behavioral pattern

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Carbon footprint of crop production in Heilongjiang land reclamation area,China

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International Journal of Agricultural and Biological Engineering 2022年第1期15卷 182-191页

作者： tianshu Chu lu Yu Derui Wang Zengling Yang College of Engineering China Agricultural UniversityBeijing 100083China

In the context of global warming,agriculture,as the second-largest source of greenhouse gas emissions after industry,had attracted widespread attention from all walks of life to reduce agricultural *** carbon footprint of the planting production system of the Heilongjiang Land Reclamation Area(HLRA),an important commodity grain base in China,was evaluated and analyzed in this *** this basis,this paper sought feasible strategies to reduce carbon emissions from two aspects:agronomic practices and cropping structure adjustment,which were particularly crucial to promote the low-carbon and sustainable development of agriculture in ***,using the accounting methods in IPCC and Low Carbon Development and Guidelines for the Preparation of Provincial Greenhouse Gas Inventories compiled by the Chinese government,relevant data were collected from 2000 to 2017 in HLRA and accounted for the carbon emissions of the planting production system in four aspects:carbon emissions from agricultural inputs,N_(2)O emissions from managed soils,CH_(4) emissions from rice cultivation and straw burning *** carbon uptake consisted of seeds and ***,with farmers'incomes were set as the objective function and carbon emissions per unit of gross production value was set as the constraint,this paper simulated and optimized the cropping structure in *** results showed that there was a“stable-growing-declining”trend in the total carbon emissions and carbon uptake of the planting production system in HLRA,with total carbon emissions of 2.84×10^(10) kg and total carbon uptake of 7.49×10^(10) kg in *** the past 18 years,carbon emissions per unit area and carbon emissions per unit of gross production had both shown a decreasing *** achieve further efficiency gains and emission reductions in the planting production system,it was recommended that the local governments strengthen the comprehensive use of straw resources,optimize irrigation and fert

关键词： carbon footprint carbon emissions carbon uptake crop planting structure Heilongjiang Land Reclamation Area

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Distribution and transport characteristics of fine particulate matter in beijing with mobile lidar measurements from 2015 to 2018

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Journal of Environmental Sciences 2022年第5期34卷 65-75页

作者： Lihui Lv tianshu Zhang Yan Xiang Wenxuan Chai Wenqing Liu Information Materials and Intelligent Sensing Laboratory of Anhui Province Institutes of Physical Science and Information TechnologyAnhui UniversityHefei 230601China Key Laboratory of Environmental Optics and Technology Anhui Institute of Optics and Fine MechanicsChinese Academy of SciencesHefei 230031China China National Environmental Monitoring Centre Beijing 100012China

Accurately quantifying the concentration and transport flux of atmospheric fine particu-late matter(PM_(2.5))is vital when attempting to thoroughly identify the pollution formation *** this study,the mobile lidar measurements in Beijing on heavily polluted days in December from 2015 to 2018 are *** lidar was mounted on a vehicle,which could perform measurements along designated *** the basis of mobile lidar mea-surements along closed circuits of the 6th Ring Road around Beijing,the spatial distribution and transport flux of PM_(2.5) in Beijing were determined with information of wind *** the spatial distribution,both the concentration and transport of PM_(2.5) were revealed to be more significant in the southern section of *** regional transport layer at heightslution *** maximum transport flux reached 1600μg/(m^(2)*sec)on 11 December *** the aerosol boundary layer height determined from the image edge detection(IED)method,the inter-annual variations of the aerosol boundary layer height(ABLH)were also *** ABLH decreased from 0.73 to 0.46 km during the same heavy pollution period from 2015 to *** adverse aerosol boundary layer(ABL)meteorological factors,including lower ABLH,light winds,temperature inversions,and accumulated moisture,have become necessary for pollution formation in Beijing.

关键词： Aerosol PM_(2.5) Regional transport Lidar Mobile measurement

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