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浏览/检索结果: 共40条，第1-10条 帮助

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Chemical characteristics and health risk evaluation of natural waters in the Du River Source National Nature Reserve: A case study in Zhushan County, Hubei Province, China 期刊论文  OAI收割
ENVIRONMENTAL RESEARCH, 2024, 卷号: 251, 页码: 11
作者:  Luo, Yingjie;  Li, Tongyu;  Zhang, Shixi;  Hao, Litao;  Luo, Kunli
  |  收藏  |  浏览/下载：23/0  |  提交时间：2024/05/27
Evolution Characteristics of New Urbanization in the Provincial Capital Cities of Western China 期刊论文  OAI收割
FRONTIERS IN ENVIRONMENTAL SCIENCE, 2022, 卷号: 10, 页码: 21
作者:  Zou, Yafeng;  Deng, Min;  Wang, Qi;  Zhang, Qian;  Rong, Yao
  |  收藏  |  浏览/下载：31/0  |  提交时间：2022/11/09
Effects of urbanization on the distribution of polycyclic aromatic hydrocarbons in China's estuarine rivers 期刊论文  OAI收割
ENVIRONMENTAL POLLUTION, 2022, 卷号: 301, 期号: 0, 页码: 119001
作者:  Li, Xiaoqian;  Lu, Yonglong;  Shi, Yajuan;  Wang, Pei;  Cao, Xianghui
  |  收藏  |  浏览/下载：26/0  |  提交时间：2022/11/07
Processing and machining mechanism of ultrasonic vibration-assisted grinding on sapphire 期刊论文  OAI收割
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING, 2022, 卷号: 142, 页码: 9
作者:  Chen, Yue;  Hu, Zhongwei;  Yu, Yiqing
  |  收藏  |  浏览/下载：31/0  |  提交时间：2022/07/18
Power Quality Analysis for Poloidal Field Power Supply System in EAST 期刊论文  OAI收割
FUSION SCIENCE AND TECHNOLOGY, 2021
作者:  Qu, Jun;  Fu, Peng;  Wu, Yanan;  Lu, Jing;  Zhu, Mingxing
  |  收藏  |  浏览/下载：43/0  |  提交时间：2021/05/31
Using organic fertilizers to increase crop yield, economic growth, and soil quality in a temperate farmland 期刊论文  OAI收割
PEERJ, 2020, 卷号: 8
作者:  Cen, Yu;  Guo, Liyue;  Liu, Meizhen;  Gu, Xian;  Li, Caihong
  |  收藏  |  浏览/下载：35/0  |  提交时间：2022/03/01
Groundwater Source Discrimination and Proportion Determination of Mine Inflow Using Ion Analyses: A Case Study from the Longmen Coal Mine, Henan Province, China 期刊论文  OAI收割
MINE WATER AND THE ENVIRONMENT, 2018, 卷号: 37, 期号: 2, 页码: 385-392
作者:  Xu, Zhimin;  Sun, Yajun;  Gao, Shang;  Zhao, Xianming;  Duan, Ruiqi
  |  收藏  |  浏览/下载：48/0  |  提交时间：2018/09/28
烟台夹河口外柱状沉积物还原性无机硫、活性铁的变化特征及其相互关系 期刊论文  OAI收割
海洋科学, 2018, 卷号: 42, 期号: 8, 页码: 90-97
作者:  姜明;  赵国强;  李兆冉;  盛彦清
  |  收藏  |  浏览/下载：27/0  |  提交时间：2020/07/08
还原性无机硫  活性铁  深层柱状沉积物  硫化度  矿化度  Reduced inorganic sulfur  Reactive iron  Deep core sediments  Degree of pyritization  Degree of sulfidity  The distribution characteristics and coupling mechanism of reduced inorganic sulfur (RIS)and reactive iron in marine core sediments are closely related to the evolution of environment quality.In this study,an improved cold diffusion method and hydrochloric acid extraction method were applied to the acid-volatile sulfur (AVS),pyrite sulfur (CRS),elemental sulfur (ES),and reactive iron [Fe (Ⅱ)and Fe (III)] analyses.The distribution characteristics and coupling mechanism of S and Fe were investigated based on a core sediment 4 meters deep collected in the northern sea area of the mouth of Jiahe River,Yantai.The results showed that the RIS in sediments was dominated by CRS,followed by AVS and ES.The content of AVS presented a narrow range with depth,whereas the CRS and ES were higher at the top and bottom layers than the middle layer  reactive iron was dominated by Fe (II),which increased with depth,while Fe (Ⅲ)gradually decreased with depth.Most of the Fe (III)was reduced to the disssolved Fe(II),which was combined with the soluble H_2S of the sulfate-reducing bacteria to produce CRS and ES in the deep layer,resulting in their accumulation at the bottom of core sediments.Furthermore,this study showed that reactive iron was not a limiting factor for the accumulation of RIS with lower degree of pyritization and degree of sulfidity.  
An analysis of first-time and repeat visitors to Korean national parks from 2007 and 2013 期刊论文  OAI收割
Journal of Mountain Science, 2017, 卷号: 14, 期号: 12, 页码: 2527-2539
作者:  Yunseon CHOE;  Michael A. SCHUETT;  Kyu-Won SIM
  |  收藏  |  浏览/下载：140/0  |  提交时间：2017/12/07
ThIs Paper ExamIned VIsiTors To Bukhansan NatiOnal Park In Korea Based On First-time And Repeat vIsitatiOn. Bukhansan NatiOnal Park Is Korea's Most Heavily vIsited NatiOnal Park With Annual vIsitatiOn Of Six milliOn VIsiTors In 2015. Data Used In ThIs Article Were Collected On-site In The Park In 2007 And 2013 By The Korea NatiOnal Park Service (Knps). The Study Variables Included Socio-demographics  Travel Behavior  Motivation  And Satisfaction With Park Attributes  Services And Facilities. Data Were Analyzed By Each Study Year For First-time And Repeat Visitors. Results Showed Significant Differences For Both First-time And Repeat Visitors.On Several Socio-demographic  Travel Behavior  And Motivation Variables Within Each Study Year. For Satisfaction With Park Attributes  Facilities And Services  First-time VisiTors Were Significantly Different From Repeat VisiTors On Seven Variables For Both Years. implicatiOns Are Given Regarding Programs And Services To Improve visiTor satisfactiOn And Sustain The Natural  Cultural And HisTorical Resources At Bukhansan nAtional Park And Other nAtional Parks In Korea. Future Research Suggestions Are Provided To Learn More About visiTor Characteristics  StAndards Of Quality And Preferences In The National Parks.  
Effects of Residual Mulch Film on the Growth and Fruit Quality of Tomato (Lycopersicon esculentum Mill.) 期刊论文  OAI收割
WATER AIR AND SOIL POLLUTION, 2017, 卷号: 228, 期号: 2, 页码: 18
作者:  Zou, Xiaoyang;  Niu, Wenquan;  Liu, Jingjing;  Li, Yuan;  Liang, Bohui
  |  收藏  |  浏览/下载：46/0  |  提交时间：2019/09/25