Research on Influential Factors of PM2.5 within the Beijing-Tianjin-Hebei Region in China by Jinchao Li, Lin Chen, Yuwei Xiang, Ming Xu

“…The proportion of electricity consumption is negatively correlated with PM2.5. Among them, population density, industrial proportion, transportation volume, energy consumption per unit area, and the proportion of electricity consumption have a pivotal influence on PM2.5. …”
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Microstructure and Hardness of Cold Work Vanadis 6 Steel after Subzero Treatment at −140°C by Juraj Ďurica, Jana Ptačinová, Mária Hudáková, Martin Kusý, Peter Jurči

“…The extent of decrease in the retained austenite amount makes around 85%, and the increase in population density of small globular carbides was approximately fivefold. …”
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What Is Affecting the Residents’ Subjective Perception toward Objective Environment Quality? by Jihong Zhang, Chaopeng Xie, Chuan Chen, Ninghan Xu, Rui Gao

“…The results show that population density is the main factor that affects the difference between subjective and objective evaluations. …”
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Population trends of the sugarcane leaf hopper Pyrilla perpusilla (Walker) (Homoptera: Lophopidae) and its parasitoids in relation to weather factors in the Tarai region of Uttarak... by Saba Tanveer, R. P. Maurya

“…An increasing trend was recorded in egg parasitization in July, when the maximum mean population density of Pyrilla egg batches (2.28 /leaf), nymphs (4.75/leaf) and adults (4.58/leaf) was found. …”
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Heatwave induced health vulnerability assessment in Bangladesh by Maria Mehrin, Fatema Tuz Zuhra, Md Mafizur Rahman

“…This heightened sensitivity is driven by a high floating population density, significant engagement in agriculture, and high population density. …”
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KAJIAN KONSEP LINKAGE PADA KAWASAN TOD (TRANSIT ORIENTED DEVELOPMENT) WEST KOWLOON, HONG KONG by Muhammad Fikri Nusyawal, Ari Widyati Purwantiasning

“…Urban is one area that is significantly affected by population density. TOD (Transit Oriented Development) is an urban area concept that has the vision to be a solution to the impact of population density. …”
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Evaluation of the Possible Impacts of New Residential Areas on Air Pollution in the Development Plan by Merve Arslan, Doğan Dursun

“…The study findings indicated that air pollution was more concentrated in areas with high building heights, population density, and a high percentage of artificial surfaces. …”
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Quantifying the Carbon Reduction Potential of Urban Parks Under Extreme Heat Events Using Interpretable Machine Learning: A Case Study of Jinan, China by Lemin Yu, Wenru Li, Changhui Zheng, Xiaowen Lin

“…CSE was strongly correlated with vegetation coverage and surrounding population density, with efficiency increasing when the vegetation index was within 0.3–0.7 and population density ranged 0–5000 or 15,000–22,500 people. …”
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Analysis of Land Use/Land Cover Changes 2005–2020 Jagorawi Highway Corridor by Tiara Pratiwi Kusumah Wardani, Lilik Budi Prasetyo, Yudi Setiawan

“…The range distance that has a potential change in land cover is 4 km from JT Jagorawi & GT Jagorawi; 1 km distance from arterial and collector roads; 7.5 km distance from the government center with a population density of < 5,000 to 10,000 people km2.  …”
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Growth performance and nutrition value of Spirulina sp. under different photoperiod by Tatag Budiardi, Nur Bambang Priyo Utomo, Asep Santosa

“…The results of this study showed that the optimum population density was achieved on day-3 days of cultured, and manipulation photoperiod showed no significant effect to the dry biomass harvest and population density, but significantly affect the specific growth rate and doubling time. …”
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Spatial–Temporal Evolution and Influencing Mechanism of Coupling Coordination Level of Social–Ecological Systems in China’s Resource-Based Cities Under the Carbon Neutrality Goal... by Yunhui Zhang, Zhong Wang, Yanran Peng, Wei Wang, Chengxi Tian

“…The results show the following: (1) The comprehensive development level of the social system in China’s resource-based cities has a significant upward trend, while the comprehensive development level of the ecological system has a gentle upward trend, and the coupling and coordination level of the social–ecological system has a fluctuating upward trend. (2) There is obvious spatial differentiation between the comprehensive development level and the coupling coordination level of the social–ecological systems in resource-based cities in China, and the relative difference is gradually increasing. (3) The digital economy index, urbanization level, science and education investment, and population density are important factors affecting the coupling coordination level, and the interaction between digital economy index, urbanization level, and population density has a strong explanatory power in the differentiation of the coupling coordination level. …”
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Climate and Plant Phenology (Plant Age and Growth Stage) Influence of Rhopalosiphum Padi L. Abundance on Wheat Plants in Luxor Governorate, Egypt by Moustafa Mohamed Sabry Bakry, Amr M. M. Badawy, Lamiaa H.Y. Mohamed

“…The combined effects of climate and plant phenology strongly correlate with R. padi population density, with explained variance (EV) of 93.86% in the first season and 99.11% in the second season. …”
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Productive and monetary efficiency of radish and coriander intercropping under organic management by Gerlani Alves Silva, Francisco Bezerra Neto, Jailma Suerda Silva de Lima, Elizangela Cabral dos Santos, Vitor Abel da Silva Lino, Francisca Karla Kelly da Silva Lino, Jéssica Paloma Pinheiro da Silva, Erivan Alves da Silva

“…The first factor was constituted by four equitable amounts of hairy woodrose and roostertree biomass (20, 35, 50 and 65 t ha-1 on a dry basis), and the second factor was constituted by coriander population densities (40, 60, 80 and 100% of the recommended density for monocropping, RDM). …”
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GPS Trajectory-Based Spatio-Temporal Variations of Traffic Accessibility under Public Health Emergency Consideration by Luqi Dong, Ying Lv, Huijun Sun, Danyue Zhi, Tingting Chen

“…Then, we analyze the spatial disparity and the temporal variation and measure the matching degree between healthcare accessibility and population density. From the perspective of epidemic prevention, we evaluate the medical capacity of the designated hospitals. …”
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Correlation between vitamin D levels, individual and socio-demographic characteristics and COVID-19 infection and death rates in 20 European countries: A modelling study by John C. DEARDEN, Philip H. ROWE

“…The correlation of cases with vitamin D levels, stroke deaths, and respiratory deaths was r2 = 0.712, while the correlation of deaths with population density, levels of physical inactivity, and stroke deaths was r2 = 0.745. …”
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Regional Disparities in Measles Vaccination Coverage and Their Associated Factors: An Ecological Study in Japan by Masaki Machida, Shinji Fukushima, Takahiro Tabuchi, Tomoki Nakaya, Wakaba Fukushima, Shigeru Inoue

“…Vaccination coverage was significantly positively associated with population density and negatively associated with the proportion of single-father households, mothers aged ≥30 years, and the ADI (incidence rate ratios: 1.004, 0.976, 0.999, and 0.970, respectively). …”
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Assessment of Ecosystem Vulnerability in the Tropic of Cancer (Yunnan Section) by Hui Ye, Die Bai, Jinliang Wang, Shucheng Tan, Shiyin Liu

“…Human activities, particularly road and population density, are identified as significant drivers of ecological vulnerability. …”
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Impacts of environmental quality and employment resilience during the coronavirus disease 2019 recession and recovery by D.O. Ayuningsih, L. Hakim, A. Suryantoro, I. Mafruhah, S. Hassan, E. Gravitiani, N.Q. Fathoni, A.I. Hakim

“…Partially, during the recession and recovery periods due to coronavirus disease 2019, technology and information, population, and population density negatively impacted the environmental quality index. …”
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PROBLEMS OF URBANIZATION IN THE CONTEXT OF CREATING A COMFORTABLE URBAN ENVIRONMENT by N. Musinova

“…A number of problems, associated with the development of cities: high population density, changes in insolation norms, lack of space for the formation of a comfortable urban environment, etc has been considered in the article. …”
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Internet e telefonia móvel no Brasil: qualidade e densidade das redes no território by Mait Bertollo

“…The spatialized data provided an insight into the situation regarding unequal support in the territory for the provision of internet connection services and the quality of access, linked above all to population density, the accumulation of wealth and the density of technical networks in metropolitan regions. …”
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