Results 61 to 70 of about 441,365 (276)

Coordinated Development of the Competitiveness System of Urban Exhibition Industry: A Case of Guangzhou, Shenzhen, Dongguan, and Zhongshan Cities

open access: yesRedai dili, 2022
The exhibition industry is characterized by high efficiency and high economic relevance, making it one of the most active components of China's modern service industry.
Chen Yilu, Li Lixun, Fu Tianlan
doaj   +1 more source

Microporous Microgel Assemblies Facilitating the Recruitment and Osteogenic Differentiation of Progenitor Cells for Bone Regeneration

open access: yesAdvanced Functional Materials, EarlyView.
There is a significant need for biomaterials with well‐defined stability and bioactivity to support tissue regeneration. In this study, we developed a tunable microgel platform that enables the decoupling of stiffness from porosity, thereby promoting bone regeneration.
Silvia Pravato   +9 more
wiley   +1 more source

Vitality Coordination Degree at the Urban Waterfront from the Perspective of Environmental Behavior Studies

open access: yesRedai dili, 2021
An urban waterfront is an important place for urban residents to interweave their public life, social interaction, and nature. Based on the interpenetration theory of environmental behavior, taking the Pearl River Front Channel as an example ...
Wang Shifu, Qin Xiaoling, Deng Zhaohua
doaj   +1 more source

Efficiency Analysis of LOHC Based Hydrogen Energy Storage System [PDF]

open access: yes, 2017
有机液体储氢材料是理想的储氢介质。本文建立了以有机液体储氢材料为基础的氢储能系统的能效分析模型,并以乙基咔唑和二苄基甲苯两种有机液体储氢载体为算例,逐步计算了制氢、储氢和燃料电池等过程的能耗。研究结果表明,乙基咔唑能效优于二苄基甲苯,其储氢效率为84.17%、系统能效为47.58%。本研究所开发的框架可衡量基于有机液体储氢载体的氢储能系统的能效 ...
伊立其   +4 more
core   +1 more source

Reconfigurable Magnetic Soft Microrobot for Acoustically Triggered Targeted Bacterial Sterilization

open access: yesAdvanced Functional Materials, EarlyView.
Reconfigurable magnetic soft microrobots integrate in situ‐grown piezoelectric zinc oxide nanorods that produce reactive oxygen species upon acoustic excitation. Combining magnetically guided transport with thermally induced planar reconfiguration, the microrobots achieve targeted delivery and enhanced bacterial sterilization through efficient on ...
Quan Gao   +12 more
wiley   +1 more source

Virtual-Real Space Mediation: A Study on the Formation Mechanism of a Takeaway Factory Based on the Delivery Rider's Perspective

open access: yesRedai dili
In the digital economy era, take-out shops relying on the online-to-offline e-commerce platform have gathered in central cities on a large scale, forming large-scale food processing spaces—"Takeaway Factories"— to serve immediate local catering needs. In
Zhao Yihan, Luo Zhendong, Zhang Ji
doaj   +1 more source

Types, Differences, and Optimization of the Spatial Match of Supply and Demand of Elderly Canteens in Guangzhou

open access: yesRedai dili, 2022
The mismatch between the supply and demand of community-service-oriented home care facilities severely restricts the effective promotion of elderly care services in communities.
Lin Lin   +4 more
doaj   +1 more source

Low Expression of DYRK2 (Dual Specificity Tyrosine Phosphorylation Regulated Kinase 2) Correlates with Poor Prognosis in Colorectal Cancer. [PDF]

open access: yes, 2016
Dual-specificity tyrosine-phosphorylation-regulated kinase 2 (DYRK2) is a member of dual-specificity kinase family, which could phosphorylate both Ser/Thr and Tyr substrates. The role of DYRK2 in human cancer remains controversial.
Chu, Zhonghua   +7 more
core   +2 more sources

Tuning the Electronic Structure and Spin State of Fe─N─C Catalysts Using an Axial Oxygen Ligand and Fe Clusters for High‐Efficiency Rechargeable Zinc–Air Batteries

open access: yesAdvanced Functional Materials, EarlyView.
A FeN4─O/Clu@NC‐0.1Ac catalyst containing atomically‐dispersed FeN4─O sites (medium‐spin Fe2+) and Fe clusters delivered a half‐wave potential of 0.89 V for ORR and an overpotential of 330 mV at 10 mA cm−2 for OER in 0.1 m KOH. When the catalyst was used in a rechargeable Zn–air battery, a power density of 284.5 mW cm−2 was achieved with excellent ...
Yongfang Zhou   +8 more
wiley   +1 more source

Exposure to hazardous volatile organic compounds, PM 10 and CO while walking along streets in urban Guangzhou, China [PDF]

open access: yes, 2004
Toxic air pollutants in street canyons are important issues concerning public health especially in some large Asian cities like Guangzhou. In 1998 <18% of Guangzhou citizens used public transportation modes, with a majority commuting on foot (42%) or ...
Blake, DR   +7 more
core  

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