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The impact of drought on forest spring phenology in northern China
Published 2025-01-01“…This study focuses on four hydroclimatic regions across northern China, providing a comprehensive assessment of regional variations in SOS dynamics. …”
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Prevalence of Corneal Astigmatism in Patients before Cataract Surgery in Northern China
Published 2014-01-01“…To analyze the prevalence and presentation patterns of corneal astigmatism in cataract surgery candidates in a teaching hospital in northern China. Methods. From May 1, 2012, to April 30, 2013, partial coherence interferometry (IOLMaster) measurements of all qualified cataract surgery candidates were retrospectively collected and analyzed. …”
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WRF-Chem simulations of snow nitrate and other physicochemical properties in northern China
Published 2025-02-01“…., WRF-Chem (Weather Research and Forecasting Model coupled with Chemistry), and evaluated the performance of WRF-Chem in simulating snow cover; snow depth; and BC, dust, and nitrate concentrations with field observations in northern China, which is one of the regions with a dense and prolonged snow cover. …”
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Impact of the COVID-19 Event on the Characteristics of Atmospheric Single Particle in the Northern China
Published 2024-12-01“…To investigate the impact of the COVID-19 pandemic prevention and control actions on the chemical composition, size distribution, and mixing state of individual particles, real-time individual particles in the urban atmosphere of the Northern China were analyzed using single particle aerosol mass spectrometry (SPAMS) during January 16 to February 4, 2020. …”
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Marginal Benefit of Industrial Water Use in Northern China and Its Influencing Factors
Published 2022-01-01“…With the data on the economic indicators,such as industrial water use,industrial added value,fixed-asset investment,and the number of employees,of the northern region for 2011—2020,this study employed an improved Cobb-Douglas production function to calculate the marginal benefit of industrial water use in the northern region and analyzed its spatio-temporal variation law.The following observations can be made from the results:① Liaoning Province and Hebei Province have the largest marginal benefits of industrial water use,which are 394.91 CNY/m<sup>3</sup> and 324.99 CNY/m<sup>3</sup>,respectively.In contrast,Jilin Province and Tianjin Municipality have the smallest and the second smallest marginal benefits,which are 22.58 CNY/m<sup>3</sup> and 71.47 CNY/m<sup>3</sup>,respectively.The marginal benefit of industrial water use in Northern China exhibits an increasing trend from east to west,which is roughly opposite to the distribution of water resource endowment.② From 2011 to 2020,the marginal benefits of industrial water use in provinces and cities all showed an increasing trend.Specifically,the marginal benefit of industrial water use in Jilin Province increased the most by 345%,while that of industrial water use in Shandong Province increased the least by 64%.③ The water use per ten thousand CNY industrial added value is the main influencing factor on a changing marginal benefit of industrial water use,and its influence is negative;the GDP per capita and the proportion of the high-tech manufacturing industry in the industrial sector are both important factors with a positive influence;the impact of water resources per capita is relatively small.The research results provide references for scientifically understanding the value of water resources,optimizing the allocation of industrial water resources in the northern region,and improving the benefits of water resource use.…”
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Cobitis beijingensis, a new spined loach from northern China (Cypriniformes, Cobitidae)
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Emergency volunteering willingness and participation: a cross-sectional survey of residents in northern China
Published 2018-07-01“…Objectives This study aimed to identify factors that influence people’s willingness to volunteer and participation in emergency volunteering in northern China.Design/Setting This study was conducted in Heilongjiang province in September and October 2014 using a mixed methods approach, which included a cross-sectional questionnaire survey on community residents and in–depth interviews with community residents and relevant organisational managers and officials in relation to emergency responses. …”
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Trends in Moisture Index, Farmland Area, and Their Combined Effects on Grain Production in Northern China
Published 2014-01-01“…To analyze the effects of land use and climate change on grain production, the area of farmland in northern China during 1988–2008 was determined from remote sensing images, a moisture index (MI) was calculated from daily meteorological data obtained from weather stations, and unit grain production was obtained from statistical yearbooks. …”
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Molecular Epidemiology of Carbapenem-Resistant Klebsiella pneumoniae in a Tertiary Hospital in Northern China
Published 2022-01-01“…The present study aimed to explore the epidemiological characteristics of CRKP isolates in Northern China and to elucidate their drug resistance mechanisms. …”
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Numerical and Experimental Study on Energy Performance of Photovoltaic-Heat Pipe Solar Collector in Northern China
Published 2015-01-01“…Water type PV/thermal (PV/T) system was a good choice but it could become freezing in cold areas of Northern China. This paper proposed a simple combination of common-used PV panel and heat pipe, called PV-heat pipe (PV-HP) solar collector, for both electrical and thermal energy generation. …”
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Prevalence and root canal morphology of taurodontism analyzed by cone-beam computed tomography in Northern China
Published 2025-01-01“…Abstract Background To evaluate the prevalence and characteristics of taurodontism in northern China by using cone-beam computed tomography (CBCT) and assisting the treatment. …”
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Agricultural and energy products trade intensified the water scarcity in the grain and energy base in northern China
Published 2025-02-01“…As an energy and agricultural product export region that plays a crucial role in Chinese grain and energy security, the grain and energy base in northern China is a widely known ecologically fragile region, suffering from severe water scarcity. …”
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Distributions, Sources, and Backward Trajectories of Atmospheric Polycyclic Aromatic Hydrocarbons at Lake Small Baiyangdian, Northern China
Published 2012-01-01“…Air samples were collected seasonally at Lake Small Baiyangdian, a shallow lake in northern China, between October 2007 and September 2008. …”
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Spatial patterns and driving forces of sand-binding shrubs in sand-blown and sand hazard regions of northern China
Published 2025-01-01“…This study investigates four species of sand-binding shrubs in the fixed sand dunes of northern China’s sand-blown regions: Artemisia ordosica (AO), Caragana korshinskii (CK), Ceratoides latens (CL), and Oxytropis aciphylla (OA). …”
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Molecular Epidemiology and Genetic Evolution of Porcine Reproductive and Respiratory Syndrome Virus in Northern China During 2021–2023
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Clinical Characteristics and Outcomes in Patients with Ruptured Middle Cerebral Artery Aneurysms: A Multicenter Study in Northern China
Published 2024-11-01“…Abstract Introduction The long-term prognosis of ruptured middle cerebral artery aneurysms (MCAAs) in northern China remains unclear. The aim of this study is to analyze the epidemiological characteristics and long-term outcomes of ruptured MCAAs in northern China. …”
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