Results 11 to 20 of about 196,805 (300)
Covalent Organic Framework Membranes through Sequential Imine Exchange for Precise Molecular Separation [PDF]
Nano-Micro LettersHighlights A sequential imine exchange strategy is first proposed for the fabrication of highly crystalline and defect-free covalent organic framework (COF) membranes.
Tingyuan Wang +9 more
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Materiality and civilization : things and society. [PDF]
, 2006 This paper argues that although classical sociology has largely overlooked the importance of social relations with the material world in shaping the form of society, Braudel's concept of ‘material civilization’ is a useful way to begin to understand the ...
Dant, Tim
core +5 more sources
The Reasons of Taking Advantage of Slaves in Fatimids’ Political and Military System [PDF]
تاریخ اسلام, 2020 Ishmaelite Fatimids (297-567) initially took power in the Islamic West and later, they entered Egypt. In their political and military structure of their government particularly the army and the positions in the court and government, they were not ...
Seyedeh Leila Taqavi Sangdehi +2 more
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BMC Public Health, 2022 Background Substance use in childhood and adolescence continues to be a current health concern. The aims of the present study were to identify trends in the use of alcohol, cigarettes, and cannabis in children and adolescents in the last 10 years and to ...
Wiebke Frobel +6 more
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Sleep-related difficulties in healthy children and adolescents
BMC Pediatrics, 2021 Background As sleep-related difficulties are a growing public health concern, it is important to gain an overview of the specific difficulty areas of the most vulnerable individuals: children.
Christiane Lewien +4 more
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BMC Public Health, 2023 Background Since children can only control and limit their own media use to a limited extent, it is often the parents who regulate their children’s media use.
Tanja Poulain +3 more
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Land, 2022 In the context of rapid urbanization, the phenomenon of spatial fragmentation in Chinese inland central cities is significant. The scientific measurement and evaluation of urban spatial fragmentation are conducive to its transformation, advancement, and ...
Li Yue +4 more
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BMC Public Health, 2022 Background To investigate environmental and social risk factors for myopia in children and adolescents in Germany. Methods 1437 children aged between 3 and 18 inclusive were examined as part of the LIFE Child study based in Leipzig, Germany.
Dariusch Philipp +7 more
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BMC Psychiatry, 2022 Background European studies on determinants and factors associated with problematic smartphone use (PSU) in children and adolescents are still sparse. This study reports the current amount of PSU symptoms and the presence of (clinically relevant) PSU in ...
Tobias Kliesener +3 more
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Land, 2022 Renewable energy consumption is considered as the main form of energy consumption in the future. The carbon emissions produced by renewable energy can be approximately ignored, and renewable energy is essential for regional sustainable development.
Yang Sun +4 more
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