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The upper tropospheric-lower stratospheric ozone drives summer precipitation and wildfire changes in West Siberia 对流层上部-平流层下部臭氧驱动西西伯利亚夏季降水和野火变化。

IF 18.8 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Bulletin

Pub Date : 2025-01-30 DOI: 10.1016/j.scib.2024.11.016

Fei Xie , Yan Xia , Wenshou Tian , Martyn P. Chipperfield , Wuhu Feng , Ke Gui , Yingli Niu , Na Liu , Yuanyuan Han

Siberian wildfires are pivotal in determining the carbon cycle and climate dynamics, exerting a profound impact on the ecosystems of the entire Arctic region. Over the past few decades, variations in summer precipitation in West Siberia have significantly influenced wildfire activity. This study analyzed precipitation trends in West Siberia from 1982 to 2021 using observations and transient simulations, uncovering a strong correlation between precipitation variability and ozone concentrations in the upper troposphere-lower stratosphere (UTLS). Heightened UTLS ozone levels warm the upper atmosphere over West Siberia during summer. This warming modifies the regional polar jet stream, intensifying its southern branch and weakening the northern one, leading to a southward shift in the jet stream. Consequently, cyclonic circulation anomalies emerge in the upper troposphere, characterized by a barotropic structure with unusual upward movements around 60°N. This upward motion triggers corresponding anomalies in zonal winds in the lower troposphere, fostering a low-pressure system at the surface. This atmospheric shift results in an influx of warm, moist air from the south and cold, dry air from the north into Siberia, enhancing cloud formation and precipitation. Notably, our analysis suggests that the rise in summer precipitation in West Siberia between 1993 and 2010 is linked to increased UTLS ozone concentrations during this period. Conversely, the decline in UTLS ozone since 2010 may increase the risk of wildfires by suppressing precipitation. Our findings underscore the pivotal role of stratospheric chemistry in shaping the regional climate and wildfire behavior.

西伯利亚野火是决定碳循环和气候动态的关键因素，对整个北极地区的生态系统产生深远影响。过去几十年来，西西伯利亚夏季降水量的变化对野火活动产生了重大影响。这项研究利用观测数据和瞬态模拟分析了西西伯利亚从 1982 年到 2021 年的降水趋势，发现降水变化与对流层上部-平流层下部（UTLS）的臭氧浓度之间存在密切联系。UTLS 臭氧浓度的升高使夏季西西伯利亚上空的高层大气变暖。这种变暖改变了区域极地喷流，增强了其南部分支，削弱了北部分支，导致喷流南移。因此，对流层上部出现了气旋环流异常现象，其特点是在北纬 60 度附近出现了气压结构异常的上升运动。这种上升运动在对流层下部引发了相应的带状风异常，在地表形成低压系统。这种大气变化导致南方的暖湿空气和北方的干冷空气涌入西伯利亚，促进了云的形成和降水。值得注意的是，我们的分析表明，1993 年至 2010 年间西西伯利亚夏季降水量的增加与这一时期 UTLS 臭氧浓度的增加有关。相反，2010 年以来UTLS 臭氧浓度的下降可能会抑制降水，从而增加野火的风险。我们的发现强调了平流层化学在塑造区域气候和野火行为方面的关键作用。

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引用次数: 0

CSF multi-omics of intracerebral hemorrhage from onset to reperfusion underscores lipid metabolism in functional outcome 脑出血从发病到再灌注的脑脊液多组学研究凸显脂质代谢对功能预后的影响

IF 18.8 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Bulletin

Pub Date : 2025-01-30 DOI: 10.1016/j.scib.2024.06.005

Yibin Jiang , Sin Man Lam , Shuixian Zhang , Huan Miao , Yong Zhou , Qian Zhang , Tengyuan Zhou , Hui Feng , Ning Ding , Haomiao Wang , Ran Luo , Yi Yin , Hua Feng , Guanghou Shui , Rong Hu

引用次数: 0

Acrylamide drives amidase-mediated gut dysbiosis to aggravate colitis 丙烯酰胺促使淀粉酶介导的肠道菌群失调加重结肠炎

IF 18.8 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Bulletin

Pub Date : 2025-01-30 DOI: 10.1016/j.scib.2024.06.004

Daotong Li , Yinghua Luo , Huimin Fan , Li Dong , Xiaoying Zhang , Yu Feng , Meiling Tian , Shuqing Zhang , Wenjing Chen , Lujia Zhang , Jianwei Gao , Xiangning Ma , Xiaofei Wang , Chen Ma , Ruimao Zheng , Xiaosong Hu , Jinfeng Wang , Fang Chen

引用次数: 0

Advancing insights into calcium homeostasis and signaling in plant growth and resilience 进一步深入了解植物生长和恢复能力中的钙平衡和信号传递。

IF 18.8 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Bulletin

Pub Date : 2025-01-30 DOI: 10.1016/j.scib.2024.09.031

Songchong Lu , Yan Sun , Lichao Ma , Sheng Luan , Guofeng Yang

引用次数: 0

In situ synthetic C encapsulated δ-MnO2 with O vacancies: a versatile programming in bio-engineering 原位合成 C 包裹 O 空位的 δ-MnO2：生物工程中的多功能编程。

IF 18.8 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Bulletin

Pub Date : 2025-01-30 DOI: 10.1016/j.scib.2024.10.034

Wei Lv , Zilei Shen , Junlin Liu , Xudong Li , Fang Ding , Dongyue Zhang , Licheng Miao , Xuefeng Lyu , Ruijie Li , Miaomiao Wang , Yiming Li , Jingwen Meng , Chao Xu

In this study, we successfully synthesized a δ-MnO₂ cathode with O vacancies, encapsulated by C derived from pyromellitic acid, using a facile hydrothermal method followed by annealing in an Ar atmosphere. The cathode’s structural stability and charge transfer kinetics are enhanced by inhibiting the formation of the by-product Zn₄SO₄(OH)₆·4H₂O, regulating the Mn valence state, and suppressing the Jahn–Teller effect through the synergy of C encapsulation and O vacancies. This results in remarkable electrochemical performance, including a large capacity of 421.2 mAh g⁻¹ at 0.1 A g⁻¹, a high specific energy density of 595.53 Wh kg⁻¹, and exceptional long-cycle life stability with 90.88% over 4000 cycles at 10 A g⁻¹, together with superior coulombic efficiency (∼100%) in pure ZnSO₄ electrolyte. Moreover, the cathode materials demonstrate specific antitumor efficacy. In brief, this work introduces an in situ synthetic C encapsulated δ-MnO₂ with O vacancies expected to be applied in both large-scale energy storage and biomedicine.

在本研究中，我们采用一种简便的水热法，成功合成了一种具有 O 空位的 δ-MnO2 阴极，该阴极由从焦麦饭石酸中提取的 C 封装，随后在氩气环境中退火。通过抑制副产物 Zn4SO4(OH)6-4H2O的形成、调节 Mn 的价态以及通过 C 封装和 O 空位的协同作用抑制 Jahn-Teller 效应，提高了阴极的结构稳定性和电荷转移动力学。这使得该材料具有卓越的电化学性能，包括在 0.1 A g-1 条件下具有 421.2 mAh g-1 的大容量，595.53 Wh kg-1 的高比能量密度，以及在 10 A g-1 条件下 4000 次循环中 90.88% 的超长循环寿命稳定性，同时在纯 ZnSO4 电解质中具有卓越的库仑效率（100%）。此外，这种阴极材料还具有特定的抗肿瘤功效。简而言之，这项研究介绍了一种原位合成的 C 封装δ-MnO2（具有 O 空位），有望应用于大规模储能和生物医学领域。

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引用次数: 0

Alternative splicing drives the functional diversification of a bHLH transcription factor in the control of growth and drought tolerance in rice 交替剪接驱动一种 bHLH 转录因子在控制水稻生长和耐旱性方面的功能多样化。

IF 18.8 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Bulletin

Pub Date : 2025-01-30 DOI: 10.1016/j.scib.2024.06.001

Min Ning , Qinyan Li , Ya Wang , Qingmao Li , Yonghong Tao , Fan Zhang , Fengyi Hu , Liyu Huang

引用次数: 0

Rare tumor list provide vast opportunities for novel drug development in China 罕见肿瘤清单为中国的新药研发提供了巨大机遇。

IF 18.8 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Bulletin

Pub Date : 2025-01-30 DOI: 10.1016/j.scib.2024.11.017

Rongshou Zheng , Shuhang Wang , Guo Zhao , Wenqiang Wei , Ning Li

引用次数: 0

Regulating reversibility of Li-SOCl2 batteries by elucidating intrinsic charging conversion strategy 通过阐明内在充电转换策略，调节锂-SOCl2 电池的可逆性。

IF 18.8 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Bulletin

Pub Date : 2025-01-30 DOI: 10.1016/j.scib.2024.10.009

Guodong Chen , Xin Liu , Haoqi Hou , Xiangyu Gao , Lei Hu , Shanmu Dong , Guanglei Cui

引用次数: 0

Deep purification of perfluorinated electronic specialty gas with a scalable metal–organic framework featuring tailored positive potential traps 利用具有定制正电位陷阱的可扩展金属有机框架深度净化全氟电子特种气体。

IF 18.8 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Bulletin

Pub Date : 2025-01-30 DOI: 10.1016/j.scib.2024.10.031

Wei Xia , Zhijie Zhou , Liangzheng Sheng , Lihang Chen , Fang Zheng , Zhiguo Zhang , Qiwei Yang , Qilong Ren , Zongbi Bao

The sequestration of trace hexafluoropropylene (C₃F₆) is a critical yet formidable task in the production of high-purity perfluoropropane (C₃F₈), an important perfluorinated electronic specialty gas (F-gas) in the advanced electronics industry. Traditional adsorbents struggle with uneven, low-pressure uptake and compromises in selectivity. This work utilizes aperture size-electrostatic potential matching within a robust metal–organic framework (Al-PMA) to facilitate selective, reversible binding of C₃F₆ while excluding larger C₃F₈ molecules. The presence of bridging hydroxyl groups (μ₂-OH) in Al-PMA creates positive electrostatic potential traps that securely anchor C₃F₆ through strong hydrogen bonding, evidenced by in-situ infrared and ¹⁹F magic angle spinning nuclear magnetic resonance spectroscopy. Breakthrough experiments demonstrate the efficient removal of trace C₃F₆ from C₃F₈ under ambient conditions, achieving C₃F₈ purity exceeding 99.999%. The scalability of Al-PMA synthesis, remarkable stability, and exceptional performance highlight its potential as a promising adsorbent for industrial C₃F₆/C₃F₈ separations.

痕量六氟丙烯（C3F6）的封存是生产高纯度全氟丙烷（C3F8）的一项关键而艰巨的任务，而全氟丙烷是先进电子工业中一种重要的全氟电子特种气体（F-gas）。传统的吸附剂在不均匀、低压吸附和影响选择性等问题上举步维艰。这项研究利用坚固的金属有机框架（Al-PMA）中的孔径大小-静电位匹配来促进 C3F6 的选择性、可逆性结合，同时排除较大的 C3F8 分子。Al-PMA 中桥接羟基（μ2-OH）的存在产生了正静电位阱，通过强氢键牢牢锚定了 C3F6，这一点通过原位红外光谱和 19F 魔角旋转核磁共振光谱得到了证明。突破性实验证明，在环境条件下，可有效去除 C3F8 中的痕量 C3F6，使 C3F8 的纯度超过 99.999%。Al-PMA 合成的可扩展性、显著的稳定性和优异的性能突显了它作为工业 C3F6/C3F8 分离吸附剂的潜力。

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引用次数: 0

mRNA vaccines for gastrointestinal malignancies: cutting-edge advances and future perspectives 用于胃肠道恶性肿瘤的 mRNA 疫苗：前沿进展与未来展望。

IF 18.8 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Bulletin

Pub Date : 2025-01-30 DOI: 10.1016/j.scib.2024.11.019

Gang Zhang , Xing Huang , Tingbo Liang

引用次数: 0

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