Science Bulletin最新文献

Adsorption configuration control on Pt-Bi₂O₃ for the oriented conversion of glycerol to glyceric acid via terminal hydroxyl oxidation. Pt-Bi2O3对末端羟基氧化定向转化甘油为甘油酸的吸附构型控制。

IF 18.8 1区综合性期刊

Science Bulletin Pub Date : 2025-05-27 DOI: 10.1016/j.scib.2025.05.032

Han-Yue Yang, Bin Sun, Xue Xiao, Xuan Ai, Rui-Bin Jiang, Pei Chen, Yu Chen

{"title":"Adsorption configuration control on Pt-Bi2O3 for the oriented conversion of glycerol to glyceric acid via terminal hydroxyl oxidation.","authors":"Han-Yue Yang, Bin Sun, Xue Xiao, Xuan Ai, Rui-Bin Jiang, Pei Chen, Yu Chen","doi":"10.1016/j.scib.2025.05.032","DOIUrl":"https://doi.org/10.1016/j.scib.2025.05.032","url":null,"abstract":"Glycerol, a byproduct of biodiesel production, can be efficiently converted into valuable chemicals through electrocatalytic reaction. In this study, platinum (Pt) nanocrystals decorated on bismuth oxide (Bi2O3) nanosheets (PtBi DONS) with an optimal Pt:Bi ratio of 1:1 were successfully synthesized using a galvanic replacement method. Pt1Bi1 DONS exhibit remarkable electrocatalytic performance for glycerol electrooxidation, achieving an excellent catalytic activity (current of 0.82 A mgPt-1 at 0.67 V vs. reversible hydrogen electrode (RHE)) and an exceptional selectivity of 96.6% for C3 products, particularly glyceric acid. The superior performance stems from two key factors: (1) electron transfer from Bi2O3 to Pt creates electron-rich Pt sites that suppress C-C bond cleavage and (2) Bi2O3 facilitates favorable glycerol adsorption configurations through multiple hydroxyl group interactions. Mechanistic studies using operando spectroscopy and electrochemical impedance spectroscopy revealed that the synergistic effect between Pt and Bi2O3 promotes rapid charge transfer and stable intermediate formation. Moreover, PtBi DONS showed excellent versatility in oxidizing other polyols compared with monoalcohols.","PeriodicalId":421,"journal":{"name":"Science Bulletin","volume":" ","pages":""},"PeriodicalIF":18.8,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144245527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

New law of splitting haploid chromosomes into different nuclei: a tale in two fungal pathogens. 单倍体染色体分裂成不同细胞核的新规律：两种真菌病原体的故事。

IF 18.8 1区综合性期刊

Science Bulletin Pub Date : 2025-05-24 DOI: 10.1016/j.scib.2025.05.028

Yun Lin, Leiyun Yang, Zhengguang Zhang

引用次数: 0

Juvenile macular degeneration in nonhuman primates generated by germline knockout of ABCA4 gene. 胚系敲除ABCA4基因引起的非人灵长类幼体黄斑变性。

IF 18.8 1区综合性期刊

Science Bulletin Pub Date : 2025-05-23 DOI: 10.1016/j.scib.2025.04.077

Ya Ma, Qiang Lin, Hai-Long He, Yi-Xin Liu, Min Li, Xiao-Hui Zhang, Zi-Bing Jin

引用次数: 0

Remarkable performance and physical origins of a multi-site functional material for ¹³¹I-ion exchange in nuclear medical wastewater. 核医疗废水中131 -i离子交换多位点功能材料的卓越性能和物理来源

IF 18.8 1区综合性期刊

Science Bulletin Pub Date : 2025-05-23 DOI: 10.1016/j.scib.2025.05.025

Jiale Liu, Yang-Yang Zhang, Ning Pan, Shiyuan Feng, Guohui Yang, Guohao Zhang, Qiuhong Zhu, Xiaoan Li, Jun-Jie Song, Jun Li, Xiaoqin Nie

{"title":"Remarkable performance and physical origins of a multi-site functional material for 131I-ion exchange in nuclear medical wastewater.","authors":"Jiale Liu, Yang-Yang Zhang, Ning Pan, Shiyuan Feng, Guohui Yang, Guohao Zhang, Qiuhong Zhu, Xiaoan Li, Jun-Jie Song, Jun Li, Xiaoqin Nie","doi":"10.1016/j.scib.2025.05.025","DOIUrl":"https://doi.org/10.1016/j.scib.2025.05.025","url":null,"abstract":"Rapid treatment of radioactive wastewater is critical for radiological medical diagnosis and therapy. An efficient yet cost-effective adsorbent capable of selectively removing radioactive nuclides is highly desired to meet the growing global demand for nuclear medicine. In this study, a simple one-step chemical grafting strategy was employed to directly synthesize a multi-site functional fiber containing quaternary ammonium chloride (-NR3+Cl-) and protonated secondary amine (-NH2+-). This novel material exhibits a remarkably high 131I- adsorption capacity, significantly outperforming commercial adsorbents. When applied to real hospital radioactive wastewater containing 131I, it reduces the total β-activity concentration to 4.63 Bq L-1, well below the stringent global discharge standard of 10 Bq L-1. Quantum-chemical studies elucidate the mechanism underlying its exceptional adsorption capacity and the physical origin of ion exchange. This work not only provides critical insights into the nature of high-performance ion exchange but also presents a promising practical approach for highly efficient capture of 131I from nuclear wastewater.","PeriodicalId":421,"journal":{"name":"Science Bulletin","volume":" ","pages":""},"PeriodicalIF":18.8,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144245531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Aerosol mitigation matters to future water availability in the global monsoon region. 气溶胶减缓对全球季风区未来的水资源供应至关重要。

IF 18.8 1区综合性期刊

Science Bulletin Pub Date : 2025-05-21 DOI: 10.1016/j.scib.2025.05.023

Jie Jiang, Tianjun Zhou, Wenxia Zhang

{"title":"Aerosol mitigation matters to future water availability in the global monsoon region.","authors":"Jie Jiang, Tianjun Zhou, Wenxia Zhang","doi":"10.1016/j.scib.2025.05.023","DOIUrl":"https://doi.org/10.1016/j.scib.2025.05.023","url":null,"abstract":"Water availability, as measured by precipitation minus evaporation (P-E), is projected to increase in the 21st century across the global monsoon region. However, while the impacts of increased greenhouse gas (GHG) concentrations are highlighted in existing studies, the contribution of reduced anthropogenic aerosol (AA) emissions is likely to be overlooked. Here, utilizing single-forcing projections under the SSP2-4.5 scenario, we elucidate the fingerprints of GHG and AA forcings on future P-E evolution. We reveal that future P-E changes are primarily driven by changes during the wet season, with contrasting trends between the Asian-African and American monsoon domains. The escalation of GHG concentrations is projected to increase P-E over Asian-African monsoon domains while decreasing it over the American monsoon domains. Conversely, aerosol reductions will drive a transition from current widespread drying to future wetting, with contributions comparable to GHG forcing over the Asian-African monsoon domains. While GHG increases and AA reductions can elevate atmospheric moistening through radiative warming, the disparate P-E responses arise from dynamic processes that favor drying trends in the American monsoon domains under GHG forcing. In contrast, strengthened monsoon circulations contribute to a wetting trend in the Asian-African monsoon domains under AA reductions, attributable to greater interhemispheric thermal contrast. Our findings highlight the importance of considering aerosol mitigation in climate risk assessments for densely populated monsoon regions.","PeriodicalId":421,"journal":{"name":"Science Bulletin","volume":" ","pages":""},"PeriodicalIF":18.8,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144197932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Observation of anti-Klein tunneling of chiral phonons. 手性声子的反克莱因隧穿观察。

IF 18.8 1区综合性期刊

Science Bulletin Pub Date : 2025-05-21 DOI: 10.1016/j.scib.2025.05.024

Hongzhu Li, Yang Liu, Qian Ding, Tianzhi Yang, Chenglin Han, Mengxin He, Jian-Hua Jiang, Ying Li

引用次数: 0

A framework for quantifying state transitions in complex ecosystems using energy flow networks. 利用能量流网络量化复杂生态系统状态转换的框架。

IF 18.8 1区综合性期刊

Science Bulletin Pub Date : 2025-05-20 DOI: 10.1016/j.scib.2025.04.076

Yanbin Hao, Xin Wang, Tong Zhao, Kai Xue, Jianqing Du, Xiaoyong Cui, Yanfen Wang

引用次数: 0

OsPLDα2-dependent synthetic apomixis enables normal seed setting in hybrid rice via genome editing. ospld α2依赖性合成无杂交通过基因组编辑实现杂交水稻的正常结实率。

IF 18.8 1区综合性期刊

Science Bulletin Pub Date : 2025-05-20 DOI: 10.1016/j.scib.2025.05.022

Fengyue Hu, Chaolei Liu, Xingchen Jin, Tingting Sun, Lei Hong, Yuchun Rao, Qian Qian, Kejian Wang

引用次数: 0

Topological surface states in γ-PtBi₂ evidenced by scanning tunneling microscopy. 扫描隧道显微镜证实γ-PtBi2的拓扑表面态。

IF 18.8 1区综合性期刊

Science Bulletin Pub Date : 2025-05-19 DOI: 10.1016/j.scib.2025.05.020

Yunkai Guo, Jingming Yan, Wen-Han Dong, Yongkai Li, Yucong Peng, Xuetao Di, Caizhen Li, Zhiwei Wang, Yong Xu, Peizhe Tang, Yugui Yao, Wenhui Duan, Qi-Kun Xue, Wei Li

引用次数: 0

Unveiling disparate urban-rural relations in China through catchment area mapping. 通过集水区地图揭示中国不同的城乡关系。

IF 18.8 1区综合性期刊

Science Bulletin Pub Date : 2025-05-16 DOI: 10.1016/j.scib.2025.03.061

Mingxing Chen, Liangkan Chen, Michael E Meadows, Dadao Lu, Yansui Liu, Yu Deng, Longwu Liang, Chao Fan

{"title":"Unveiling disparate urban-rural relations in China through catchment area mapping.","authors":"Mingxing Chen, Liangkan Chen, Michael E Meadows, Dadao Lu, Yansui Liu, Yu Deng, Longwu Liang, Chao Fan","doi":"10.1016/j.scib.2025.03.061","DOIUrl":"https://doi.org/10.1016/j.scib.2025.03.061","url":null,"abstract":"Sustainable urbanization in the Global South demands a comprehensive understanding of the intricate urban-rural relations in the face of rapid transformation. Traditional dichotomous urban-rural classification fails to thoroughly capture the convoluted interactions within the increasingly complex urbanizing landscape. Here, we reconstruct the urban-rural relationship in China by employing high-resolution satellite land-cover data in an urban-rural catchment area (URCA) framework to redefine urban-rural boundaries and quantify fine-grained connectivity. We categorize land areas into urban centers, peri-urban regions, rural areas, and hinterlands, revealing their respective population distributions in 2018. Our findings show significant spatial disparities in China's urban-rural relations due to transitioning from a predominantly rural to an urbanizing nation. The study also highlights substantial supply-demand inconsistencies in public infrastructure and fiscal preferences, exacerbating social expenditure gaps among municipal levels within the URCA. Our research contributes to understanding geographic social integration in urban-rural relations, which is important to promoting social justice and mitigating inequalities associated with China's urbanization in the context of the Sustainable Development Goals (SDGs).","PeriodicalId":421,"journal":{"name":"Science Bulletin","volume":" ","pages":""},"PeriodicalIF":18.8,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144245533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0