检索结果-南通市图书馆

The influence of calculation error of hourly marine meteorological parameter on building energy consumption calculation

引用

Frontiers of Architectural Research 2022年第5期11卷 981-991页

作者： dalong liu Tian Sun Yufei Han Xiuying Yan School of Architecture Xi'an University of Architecture and TechnologyXi'an 710055China

The ocean is a crucial area for future economic development.The marine environment has high energy-efficient and ecological requirements for building construction.Meteorological parameters are the key basis for the analysis and design of building energy efficiency.The lack of meteorological parameters for energy efficiency,particularly hourly data,under oceanic climatic conditions is a universal problem.The appropriate calculation methods of hourly meteorological parameters under oceanic climatic conditions are explored in this study.The impact of the calculation errors of the hourly meteorological parameters on building energy consumption is also analyzed.Three key meteorological parameters are selected:temperature,humidity,and wind speed.Five hourly calculations methods,including linear interpolation,cubic spline interpolation,pieceated three-Hermite interpolation,Akima interpolation,and radial basis function interpolation,are selected to calculate the error of the difference method,with Xiamen,Haikou,and Sanya as the locations of meteorological research.Appropriate interpolation methods are selected for the three parameters,and the seasonal and regional characteristics of the errors of each parameter are compared.Different interpolation methods should be selected for different meteorological parameters in different seasons.The error data of the three parameters of different magnitudes are constructed.A quantitative relationship between the sum of squares due to error of the three meteorological parameters and the rate of change of cooling energy consumption is established.The hourly calculation errors of meteorological parameters have an important impact on the calculation of dynamic energy consumption.The energy consumption differences caused by the errors of different parameters are significant.Obvious regional and seasonal differences also exist.This research strengthens the research foundation of building energy consumption calculation under oceanic climate conditions.

关键词： Building energy efficiency Oceanic climate Meteorological parameters Interpolation method Calculation error Dynamic energy simulation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

极端天气对被动式太阳能建筑采暖效率的影响

引用

太阳能学报 2024年第2期45卷 42-49页

作者：刘大龙韩雨菲西安建筑科技大学建筑学院西安710055 西安建筑科技大学信息与控制工程学院西安710311

为研究极端天气对被动式太阳能建筑采暖效率的影响,选取关键气象参数(直射辐射、干球温度)来构造极端冷气象条件,主要分析太阳低辐射和极端低温对拉萨、乌鲁木齐、兰州、哈尔滨4个城市的被动式太阳能建筑采暖效率的影响。结果表明:随着... 详细信息

为研究极端天气对被动式太阳能建筑采暖效率的影响,选取关键气象参数(直射辐射、干球温度)来构造极端冷气象条件,主要分析太阳低辐射和极端低温对拉萨、乌鲁木齐、兰州、哈尔滨4个城市的被动式太阳能建筑采暖效率的影响。结果表明:随着太阳直射辐射和温度的降低,哈尔滨整个采暖季的采暖潜力下降最大,拉萨、兰州、乌鲁木齐在太阳直射辐射下降超过50%时,采暖潜力下降最大,哈尔滨在辐射下降43%时采暖潜力下降最大。在温度下降不超过10℃的情况下,拉萨和哈尔滨的采暖潜力下降最大,兰州和乌鲁木齐则是在温度分别下降11和15℃时,采暖潜力下降最大。气象参数对采暖潜力的敏感性分析表明,太阳直射辐射对太阳能采暖潜力的影响大于温度。同时,对不同设计因素进行全局敏感性分析,建筑保温材料的物理参数对采暖潜力的影响高于其他设计参数。

关键词：极端天气太阳能采暖被动式太阳能建筑温度太阳辐射敏感性分析

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

节能技术在绿色建筑工程中的应用分析

引用

中国厨卫 2024年第2期23卷 214-216页

作者：刘大龙济南四建建设发展有限公司济南250000

传统的建筑设计方法往往忽视了能源效率,导致建筑物的能耗过高,给环境带来了严重的污染。节能技术的应用是一种重要的解决方案,其通过优化建筑结构、改善采光系统、提高通风换气效率等多种措施,可以显著降低建筑物的能源消耗。文章分析... 详细信息

传统的建筑设计方法往往忽视了能源效率,导致建筑物的能耗过高,给环境带来了严重的污染。节能技术的应用是一种重要的解决方案,其通过优化建筑结构、改善采光系统、提高通风换气效率等多种措施,可以显著降低建筑物的能源消耗。文章分析了节能技术在绿色建筑工程中的应用及效益,以期为相关领域的发展提供参考。

关键词：节能技术绿色建筑能源消耗

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Investigation of solution chemistry to enable efficient lithium recovery from low-concentration lithium-containing wastewater

引用

Frontiers of Chemical Science and Engineering 2020年第4期14卷 639-650页

作者： Chunlong Zhao Mingming He Hongbin Cao Xiaohong Zheng Wenfang Gao Yong Sun He Zhao dalong liu Yanling Zhang Zhi Sun State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China Beijing Engineering Research Center of Process Pollution Control Key Laboratory of Green Process and EngineeringInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China University of Nottingham Ningbo China Ningbo 315100China Henan Bingsheng Biotechnology Company Limited Kaifeng 475103China

In the production of lithium-ion batteries(LIBs)and recycling of spent LIBs,a large amount of low-concentration lithium-containing wastewater(LCW)is generated.The recovery of Li from this medium has attracted significant global attention from both the environmental and economic perspectives.To achieve effective Li recycling,the features of impurity removal and the interactions among different ions must be understood.However,it is generally dificult to ensure highly efficient removal of impurity ions while retaining Li in the solution for further recovery.In this study,the removal of typical impurity ions from LCW and the interactions between these species were systematically investigated from the thermodynamic and kinetics aspects.It was found that the main impurities(e.g.,Fe^+,AIP^+,Ca^2+,and Mg^2+)could be efficiently removed with high Li recovery by control-ling the ionic strength of the solution.The mechanisms of Fe^3+,Al^+,Ca^2+,and Mg^2+removal were investigated to identify the controlling steps and reaction kinetics.It was found that the precipitates are formed by a zero-order reaction,and the activation energies tend to be low with a sequence of fast chemical reactions that reach equilibrium very quickly.Moreover,this study focused on Li loss during removal of the impurities,and the corresponding removal rates of Fe^+,Al^+,Ca^2+,and Mg^2+were found to be 99.8%,99.5%,99%,and 99.7%,respectively.Conse-quently,high-purity LisPO4 was obtained via one-step precipitation.Thus,this research demonstrates a potential route for the effective recovery of Li from low-concentra-tion LCW and for the appropriate treatment of acidic LCW.

关键词： lithium-containing wastewater lithium phos-phate precipitation impurity ion

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

居住建筑夏季行为节能计算模型研究

引用

建筑节能（中英文） 2024年第2期52卷 53-57页

作者：范旭悦刘大龙马岚西安建筑科技大学建筑学院西安710055 宝鸡高新技术产业开发区管理委员会陕西宝鸡721000

建筑节能是实现能源消耗降低的重要途径。其中,住宅领域的能耗削减,尤其需要对居民行为节能的可能性进行深入探讨。通过问卷调查方式收集数据,以了解不同地域间节能行为的差异,进而分析行为节能的多种模式。这些模式主要包括与设备使用... 详细信息

建筑节能是实现能源消耗降低的重要途径。其中,住宅领域的能耗削减,尤其需要对居民行为节能的可能性进行深入探讨。通过问卷调查方式收集数据,以了解不同地域间节能行为的差异,进而分析行为节能的多种模式。这些模式主要包括与设备使用直接相关的行为,以及不涉及设备使用的其他行为。在夏热冬暖及夏热冬冷地区,对设备使用行为开展了特别的实地测试,并据此建立了相应的节能行为模型。在台州和广州两地,采集了居民实际使用空调的数据,并将其应用于行为模型中,形成基于概率函数的模型。测试结果显示,广州地区空调启动的温度临界点为29.8℃,而台州地区空调启动的温度临界点为28.8℃。建立行为模型不仅能够提高能耗模拟的精确度,而且可为热工设计提供科学依据,有助于推动建筑节能技术的实际应用。

关键词：居住建筑行为节能建筑热工建筑节能用能行为

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

GMC-96B钢轨打磨车新型集尘装置设计研究

引用

现代制造技术与装备 2024年第3期60卷 69-72页

作者：刘大龙杨全赵宇晨中国铁路成都局集团有限公司成都610051 株洲时代电子技术有限公司株洲412001

钢轨打磨车在作业过程中会产生大量的磨削粉尘,因此需要配备一套集尘装置收集磨削粉尘,以减少扬尘和残留粉尘对周边环境的污染。根据GMC-96B型钢轨打磨车集尘装置的实际使用情况,针对性提出一种适用于该打磨车的新型集尘装置,并对关键... 详细信息

钢轨打磨车在作业过程中会产生大量的磨削粉尘,因此需要配备一套集尘装置收集磨削粉尘,以减少扬尘和残留粉尘对周边环境的污染。根据GMC-96B型钢轨打磨车集尘装置的实际使用情况,针对性提出一种适用于该打磨车的新型集尘装置,并对关键子系统进行详细的技术设计及分析计算。计算结果表明,新型集尘装置相比原有集尘装置具有明显的性能提升。

关键词：钢轨打磨车集尘装置过滤系统压力损失

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

干式装配式墙体非均匀性传热规律

引用

建筑节能（中英文） 2024年第3期52卷 120-125,136页

作者：刘大龙冯本成胡宋舒西安建筑科技大学西安710055 西安建筑科大工程技术有限公司西安710055

干式连接的装配式建筑因连接缝的存在会造成接缝与墙体间的传热不均,对墙体传热及建筑能耗产生重要影响。分析了干式装配外墙的非均匀传热特征,提出外墙内表面的累计温差比T′来评价墙体的传热非均匀性,确定了干式装配墙体传热的非均匀... 详细信息

干式连接的装配式建筑因连接缝的存在会造成接缝与墙体间的传热不均,对墙体传热及建筑能耗产生重要影响。分析了干式装配外墙的非均匀传热特征,提出外墙内表面的累计温差比T′来评价墙体的传热非均匀性,确定了干式装配墙体传热的非均匀判定准则。提出用热桥影响区域等效传热系数K′_(T)来评价接缝非均匀传热影响区域,分析了非均匀性传热对建筑采暖能耗的影响。结果表明,装配式墙体在接缝两侧的温度波动较大,且墙体构造越复杂波动越显著。干式装配墙体接缝的非均匀影响区域明显大于传统砖混建筑。T′越大墙体传热越不均,建筑采暖能耗越大。接缝宽每增加5 mm导致的墙体传热不均使得建筑能耗变化约为3%~4%,含空气层的预制墙体变化尤为大,约为3.2%~6.7%。

关键词：装配式建筑干式连接拼接缝墙体传热非均匀性

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Alternative splicing of the PECTINESTERASE gene encoding a cell wall-degrading enzyme affects postharvest softening in grape

引用

Journal of Integrative Agriculture 2024年第3期23卷 863-875页

作者： Hainan liu Maosong Pei Charles Ampomah-Dwamena Yaxin Shang Yihe Yu Tonglu Wei Qiaofang Shi dalong Guo College of Horticulture and Plant Protection Henan University of Science and TechnologyLuoyang 471000China Henan Engineering Technology Research Center of Quality Regulation and Control of Horticultural Plants Luoyang 471000China The New Zealand Institute for Plant&Food Research Limited(PFR) Auckland 1010New Zealand

The firmness of table grape berries is a crucial quality parameter. Despite extensive research on postharvest fruit softening, its precise molecular mechanisms remain elusive. To enhance our comprehension of the underlying molecular factors, we initially identified differentially expressed genes(DEGs) by comparing the transcriptomes of folic acid(FA)-treated and water-treated(CK) berries at different time points. We then analyzed the sequences to detect alternatively spliced(AS) genes associated with postharvest softening. A total of 2,559 DEGs were identified and categorized into four subclusters based on their expression patterns, with subcluster-4 genes exhibiting higher expression in the CK group compared with the FA treatment group. There were 1,045 AS-associated genes specific to FA-treated berries and 1,042 in the CK-treated berries, respectively. Gene Ontology(GO) annotation indicated that the AS-associated genes in CK-treated berries were predominantly enriched in cell wall metabolic processes,particularly cell wall degradation processes. Through a comparison between treatment-associated AS genes and subcluster-4 DEGs, we identified eight genes, including Pectinesterase 2(VvPE2, Vitvi15g00704), which encodes a cell wall-degrading enzyme and was predicted to undergo an A3SS event. The reverse transcription polymerase chain reaction further confirmed the presence of a truncated transcript variant of VvPE2 in the FA-treated berries.Our study provides a comprehensive analysis of AS events in postharvest grape berries using transcriptome sequencing and underscores the pivotal role of VvPE2 during the postharvest storage of grape berries.

关键词： grape postharvest softening folic acid alternative splicing Pectinesterase 2 alternative 3'splice site(A3SS)

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Identification,characterization,and verification of miR399 target gene in grape

引用

Horticultural Plant Journal 2024年第1期10卷 91-102页

作者： Maosong Pei Hainan liu Tonglu Wei Huiying Jin Yihe Yu Mengting Ma Xiaomeng Song Rundong Dai dalong Guo Henan Engineering Technology Research Center of Quality Regulation and Controlling of Horticultural Plants College of Horticulture and Plant ProtectionHenan University of Science and TechnologyLuoyangHenan 471023China

The microRNA miR399 plays an important role in phosphorus signal transduction pathways in plants.Previously,miR399 was shown to be closely associated with berry ripening in grape(Vitis vinifera).The objective of the present study was to elucidate the evolutionary characteristics of the miR399 gene family in grape and to verify the cleavage effect on the target genes.Grape miR399s were identified by miRNA sequencing and retrieval from the miRBase database.The mature sequences and precursor sequences were subjected to phylogenetic analysis to reconstruct evolutionary trees,as well as secondary structure analysis of the precursor sequence,and prediction of target genes.The cisacting elements in the miR399 promoter were predicted and the cleavage effect of grape miR399b on its target genes was verified.The grape miR399 family comprised nine precursor sequences and nine mature sequences.The precursor sequences formed a typical and stable stem—loop structure.The minimum folding free energy ranged from-55.70 kcal·mol^(-1)to-37.40 kcal·mol^(-1).Multiple sequence alignment revealed that the miR399 family was highly conserved.The grape miR399 family was phylogenetically closely related to peach,apple,and citrus miR399s.Grape miR399s were predicted to target inorganic phosphate transporter 1—3,phospholipase D delta-like,and beta-glucuronosyltransferase.The cleavage effect of grape miR399b on the target genes was verified by means of a dual-luciferase assay and 5’RLM-RACE.Histochemical GUS staining showed that the promoter activity of miR399b was promoted by GA3treatment.

关键词： Grape miR399 Phosphorus metabolism Early ripening

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

NIR-II fluorescence imaging in liver tumor surgery: A narrative review

引用

Journal of Innovative Optical Health Sciences 2024年第1期17卷 29-44页

作者： Zihao liu Lifeng Yan Qingsong Hu dalong Yin Department of General Surgery Anhui Provincial Hospital Anhui Medical UniversityHefei 230001P.R.China Department of Hepatobiliary Surgery and Centre for Leading Medicine and Advanced Technologies of IHM The First A±liated Hospital of USTC Division of Life Sciences and Medicine University of Science and Technology of China Hefei Anhui 230001P.R.China Hefei National Laboratory for Physical Sciences at the Microscale CAS Key Laboratory of Soft Matter Chemistry and Department of Chemical Physics University of Science and Technology of China Hefei 230026P.R.China Anhui Province Key Laboratory of Hepatopancreatobiliary Surgery The First Affiliated Hospital of USTC Division of Life Sciences and Medicine University of Science and Technology of ChinaHefei 230001P.R.China

In liver tumor surgery,the recognition of tumor margin and radical resection of microcancer focis have always been the crucial points to reduce postoperative recurrence of tumor.However,naked-eye inspection and palpation have limited effectiveness in identifying tumor boundaries,and traditional imaging techniques cannot consistently locate tumors in real time.As an intraoperative real-time navigation imaging method,NIRfluorescence imaging has been extensively studied for its simplicity,reliable safety,and superior sensitivity,and is expected to improve the accuracy of liver tumor surgery.In recent years,the research focus of NIRfluorescence has gradually shifted from the-rst near-infrared window(NIR-I,700–900 nm)to the second near-infrared window(NIR-II,1000–1700 nm).Fluorescence imaging in NIR-II reduces the scattering effect of deep tissue,providing a preferable detection depth and spatial resolution while signi-cantly eliminating liver autofluorescence background to clarify tumor margin.Developingfluorophores combined with tumor antibodies will further improve the precision offluorescence-guided surgical navigation.With the development of a bunch offluorophores with phototherapy ability,NIR-II can integrate tumor detection and treatment to explore a new therapeutic strategy for liver cancer.Here,we review the recent progress of NIR-IIfluorescence technology in liver tumor surgery and discuss its challenges and potential development direction.

关键词： Fluorescence guided-surgery liver cancer near infrared-II optical imaging

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：