As a new generation of general technology, artificial intelligence (AI) provides crucial technical support for addressing the dilemmas of carbon emission reduction in cities. This paper selects data from 273 prefecture-level cities in China from 2010 to 2024 to examine the impact of AI on urban carbon emission intensity (CEI) and its mechanism of action. The results show that AI is negatively associated with CEI. AI lowers the threshold for scientific research, expands the scale of patent output, and generates groundbreaking high value patents, which indicates that both the quantity and quality of innovation are key paths to facilitating urban carbon emission reduction. The results of the heterogeneity test indicate that the carbon reduction effects of AI exhibit stratified characteristics, with cities southeast of the Hu Line, northern industrial cities, and resource-based cities demonstrating more prominent emission reduction effects. Accordingly, policy recommendations such as establishing regional digital low-carbon layouts and allocating policy resources based on resource endowments are put forward. The research provides a theoretical basis for reducing carbon emissions and achieving sustainable development goals relying on AI.
Xiangmeng Meng, Lei Xi· Sustainability· 0 citations
Background Endovascular recanalization of non-acute internal carotid artery occlusion (NA-ICAO) remains technically challenging. This technical report describes the Balloon-Assisted Catheter Advancement (BACAT) technique and evaluates its procedural feasibility in a small, heterogenous patient cohort. Methods We retrospectively reviewed 15 patients with NA-ICAO who underwent BACAT-assisted recanalization. Cases included both pure endovascular therapy (n = 8) and hybrid therapy combined open surgery with endovascualr therapy (n = 7). The primary outcome was technical success, defined as successful antegrade passage of the catheter across the occlusive segment using the BACAT maneuver. Procedural complications were recorded descriptively. Results Technical success was achieved in 13 of 15 patients (86.7%). No intraprocedural rupture or flow-limiting dissection occurred. One non-disabling postoperative stroke (6.7%) was observed in the hybrid subgroup. Given the small sample, absence of a control group, and case heterogeneity, no statistical comparisons or efficacy claims are made. Conclusions The BACAT technique appears technically feasible for selected patients with NA-ICAO, including both pure endovascular therapy and hybrid surgical. This report provides procedural details to facilitate replication and further investigation. Clinical efficacy and comparative safety require validation in larger, controlled studies.
Yufeng Wang, Yixin Sun, Ruilin Ren et al.· Frontiers in Surgery· 0 citations
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