发布求助
文献互助 智能选刊 最新文献

Open Journal of Natural Science最新文献

筛选
英文 中文
The Influence of Feeding Time and Surface Active Agents on Impact Microreactor in Powder Preparation 加料时间和表面活性剂对冲击微反应器粉体制备的影响
Open Journal of Natural Science Pub Date : 1900-01-01 DOI: 10.12677/ojns.2023.114078
慧林 王
{"title":"The Influence of Feeding Time and Surface Active Agents on Impact Microreactor in Powder Preparation","authors":"慧林 王","doi":"10.12677/ojns.2023.114078","DOIUrl":"https://doi.org/10.12677/ojns.2023.114078","url":null,"abstract":"","PeriodicalId":121138,"journal":{"name":"Open Journal of Natural Science","volume":"164 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123510314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Application of UAV Low-Altitude Remote Sensing in Mine Ecological Management 无人机低空遥感在矿山生态管理中的应用
Open Journal of Natural Science Pub Date : 1900-01-01 DOI: 10.12677/ojns.2023.114067
男 赵
{"title":"Application of UAV Low-Altitude Remote Sensing in Mine Ecological Management","authors":"男 赵","doi":"10.12677/ojns.2023.114067","DOIUrl":"https://doi.org/10.12677/ojns.2023.114067","url":null,"abstract":"","PeriodicalId":121138,"journal":{"name":"Open Journal of Natural Science","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120900955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Land Surface Spectral Characteristics of Danxia Isolated Biotope in Bijia Mountain, Southern Sichuan 川南碧家山丹霞孤立生物群落的地表光谱特征
Open Journal of Natural Science Pub Date : 1900-01-01 DOI: 10.12677/ojns.2021.94053
奇慧 张
{"title":"Land Surface Spectral Characteristics of Danxia Isolated Biotope in Bijia Mountain, Southern Sichuan","authors":"奇慧 张","doi":"10.12677/ojns.2021.94053","DOIUrl":"https://doi.org/10.12677/ojns.2021.94053","url":null,"abstract":"","PeriodicalId":121138,"journal":{"name":"Open Journal of Natural Science","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124166914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Characteristics of Summer Precipitation and Climate Change in Southwest China in Recent 60 Years 近60年来西南地区夏季降水特征与气候变化
Open Journal of Natural Science Pub Date : 1900-01-01 DOI: 10.12677/ojns.2022.105090
慧鑫 杨
{"title":"Characteristics of Summer Precipitation and Climate Change in Southwest China in Recent 60 Years","authors":"慧鑫 杨","doi":"10.12677/ojns.2022.105090","DOIUrl":"https://doi.org/10.12677/ojns.2022.105090","url":null,"abstract":"","PeriodicalId":121138,"journal":{"name":"Open Journal of Natural Science","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127682666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Research Progress and Synthesis of Metal Nanoparticles in Borosilicate Glass 硼硅酸盐玻璃中金属纳米颗粒的研究进展及合成
Open Journal of Natural Science Pub Date : 1900-01-01 DOI: 10.12677/ojns.2021.91010
慧 陈
{"title":"Research Progress and Synthesis of Metal Nanoparticles in Borosilicate Glass","authors":"慧 陈","doi":"10.12677/ojns.2021.91010","DOIUrl":"https://doi.org/10.12677/ojns.2021.91010","url":null,"abstract":"","PeriodicalId":121138,"journal":{"name":"Open Journal of Natural Science","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126481356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study on Spatiotemporal Distribution Characteristics of High Temperature and Heat Waves in Southwest China from 1979 to 2019 1979 - 2019年中国西南地区高温、热浪时空分布特征研究
Open Journal of Natural Science Pub Date : 1900-01-01 DOI: 10.12677/ojns.2020.84027
Yue Zhang, Tiangui Xiao, Juetao Zeng, Yu Du
{"title":"Study on Spatiotemporal Distribution Characteristics of High Temperature and Heat Waves in Southwest China from 1979 to 2019","authors":"Yue Zhang, Tiangui Xiao, Juetao Zeng, Yu Du","doi":"10.12677/ojns.2020.84027","DOIUrl":"https://doi.org/10.12677/ojns.2020.84027","url":null,"abstract":"In the context of global warming, extreme warming events occur frequently. In order to further study the spatial and temporal distribution characteristics of heat wave in southwest China, in this paper, linear trend analysis and Mann-Kendall test are used to study the spatial and temporal distribution of heat waves in southwest China. The 1979-2019 summer temperature data of European Centre for Medium-Range Weather Forecasts (ECMWF) are used. The following conclusions are drawn: Over the past 41 years, the frequency, duration and intensity of heat waves have shown a general trend of linear increase, with the rates of 0.09 times/10a, 0.37 d/10a and 0.44 ̊C∙d, respectively. From the mutation situation, before 2013, the frequency, duration and intensity of heat waves showed an increasing trend, but the increasing trend was not significant. After 2013, the frequency, duration and intensity of heat waves showed a significant increase trend. The spatial distribution of the frequency, duration and intensity of heat waves is more in the southeast and less in the northwest. The heat waves areas were concentrated in the central and eastern part of the study area, while the hot and heat wave events were rare in western Sichuan and southwestern Yunnan. Except for western Yunnan and western Sichuan, the frequency, duration and intensity of heat waves in the study area all showed an increasing trend. The central region of the study area had a larger increasing trend, and the regions that passed the 0.05 significance test were also concentrated in the central region.","PeriodicalId":121138,"journal":{"name":"Open Journal of Natural Science","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128043628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Research on Tropopause Selection Method for High Altitude Sounding 高空探测对流层顶选择方法研究
Open Journal of Natural Science Pub Date : 1900-01-01 DOI: 10.12677/ojns.2022.103024
清芳 刘
{"title":"Research on Tropopause Selection Method for High Altitude Sounding","authors":"清芳 刘","doi":"10.12677/ojns.2022.103024","DOIUrl":"https://doi.org/10.12677/ojns.2022.103024","url":null,"abstract":"Using upper-air sounding data since the use of the L-band-radar radiosonde at the Tacheng Na-tional Reference Station, based on tropopause meteorological data, this paper analyzes the characteristics and significance of tropopause, the determination of the tropopause, the selection method of the missing data in the part of tropopause, and the rational selection of several typical examples of tropopause in this station, and sums up the variation characteristics of tropopause, it provides a scientific basis for the study of weather and climate..","PeriodicalId":121138,"journal":{"name":"Open Journal of Natural Science","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129991764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Research on Active Tectonic Geomorphic Parameters of Bahe River Basin Based on DEM 基于DEM的灞河流域活动构造地貌参数研究
Open Journal of Natural Science Pub Date : 1900-01-01 DOI: 10.12677/ojns.2021.96095
迎国 王
{"title":"Research on Active Tectonic Geomorphic Parameters of Bahe River Basin Based on DEM","authors":"迎国 王","doi":"10.12677/ojns.2021.96095","DOIUrl":"https://doi.org/10.12677/ojns.2021.96095","url":null,"abstract":"","PeriodicalId":121138,"journal":{"name":"Open Journal of Natural Science","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130459528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of MFT Nucleating Agent on Cell Structure and Physical Properties of Polyurethane Rigid Foam Cells MFT成核剂对聚氨酯硬泡孔结构和物理性能的影响
Open Journal of Natural Science Pub Date : 1900-01-01 DOI: 10.12677/ojns.2023.111007
彬彬 李
{"title":"Effect of MFT Nucleating Agent on Cell Structure and Physical Properties of Polyurethane Rigid Foam Cells","authors":"彬彬 李","doi":"10.12677/ojns.2023.111007","DOIUrl":"https://doi.org/10.12677/ojns.2023.111007","url":null,"abstract":"","PeriodicalId":121138,"journal":{"name":"Open Journal of Natural Science","volume":"183 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133405882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
MC Simulation Study of γ-Ray Spectral Distribution in Natural Radiation Field 自然辐射场γ射线谱分布的MC模拟研究
Open Journal of Natural Science Pub Date : 1900-01-01 DOI: 10.12677/ojns.2022.104061
松林 朱
{"title":"MC Simulation Study of γ-Ray Spectral Distribution in Natural Radiation Field","authors":"松林 朱","doi":"10.12677/ojns.2022.104061","DOIUrl":"https://doi.org/10.12677/ojns.2022.104061","url":null,"abstract":"","PeriodicalId":121138,"journal":{"name":"Open Journal of Natural Science","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133430533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信