Sensors (Basel)
October 2024
The tracking pose of heliostats directly affects the stability and working efficiency of concentrated solar power (CSP) plants. Due to occlusion, over-exposure, and uneven illumination caused by mirror reflection, traditional image processing algorithms showed poor performances on the detection and segmentation of heliostats, which impede vision-based 3D measurement of tracking poses of heliostats. To tackle this issue, object detection using deep learning neural networks are exploited.
View Article and Find Full Text PDFIn this study, we developed a solar ceramic kiln to address the problem of CO emissions caused by traditional ceramic ware firing processes. Ceramic specimens were fired using the proposed setup, and their properties were compared with those of an electric-fired ceramic cup (ECC). The solar-fired ceramic cup (SCC) exhibited no cracks on its surface.
View Article and Find Full Text PDFThe threat of microplastic pollution in soil ecosystems has caused widespread concern. In order to clarify the effect of polyethylene microplastics on soil properties, a 4-month soil incubation experiment was conducted in this study to investigate the effect of different mass fraction (1 %, 2.5 %, and 5 %) and particle sizes (30 mesh and 100 mesh) of polyethylene microplastics on soil chemical properties, nutrient contents, and enzyme activities.
View Article and Find Full Text PDFConcerns over supply risks of critical metals used in electric vehicle (EV) batteries are frequently underscored as impediments to the widespread development of EVs. With the progress to achieve carbon neutrality by 2060 for China, projecting the critical metals demand for EV batteries and formulating strategies, especially circular economy strategies, to mitigate the risks of demand-supply imbalance in response to potential obstacles are necessary. However, the development scale of EVs in the transport sector to achieve China's carbon neutrality is unclear, and it remains uncertain to what extent circular economy strategies might contribute to the reduction of primary raw materials extraction.
View Article and Find Full Text PDFColloids Surf B Biointerfaces
January 2024
Neural stem cells (NSCs) transplantation has great potential in the field of central nervous system injury repair, but the limited differentiation efficiency of transplanted NSCs often affects the therapeutic effect. In this paper, we present a stable three-dimensional (3D) conductive hydrogel prepared by cross-linking MXenes to Matrigel hydrogel. Benefiting from 3D microporous network structure of hydrogel, the conductive hydrogel can provide an extracellular matrix-like substrate for NSCs growth.
View Article and Find Full Text PDFSheng Wu Gong Cheng Xue Bao
February 2023
As a widespread pollutant in the environment, research on microplastics have attracted much attention. This review systematically analyzed the interaction between microplastics and soil microorganisms based on existing literatures. Microplastics can change the structure and diversity of soil microbial communities directly or indirectly.
View Article and Find Full Text PDFLin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
July 2022
To investigate the clinicopathological features, treatment and prognosis of Castleman disease in the head and neck. The clinical and pathological data of 18 patients with Castleman disease of the head and neck in Nanjing Drum Tower Hospital from 2007 to 2021 were retrospectively analyzed. There were 14 cases of unicentric type and 4 cases of multicentric type.
View Article and Find Full Text PDFChina is the largest emitter of greenhouse gases in the world, and the Chinese government proposes to reduce carbon intensity (CI) by 65% in 2030 compared with 2005. However, literature analyzing whether the current emission reduction policies can effectively help CI reach the policy target is rare. China's CI data from 1978 to 2019, divided into phases using the Bai and Perron (BP) breakpoint test, are evaluated in this study.
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