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Ultraviolet Photodetector based on Sr_(2)Nb_(3)O_(10) Perovskite Nanosheets

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Journal of Wuhan University of Technology(Materials Science) 2024年第2期39卷 282-287页

作者：张斌斌 JIA Mengmeng liang qi WU Jinsong ZHAI Junyi 李宝文 School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China CAS Center for Excellence in Nanoscience Beijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijin 100083China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

Liquid-phase exfoliation was employed to synthesize Sr_(2)Nb_(3)O_(10) perovskite nanosheets with thicknesses down to 1.76 *** electron microscopy(TEM),atomic force microscope(AFM),X-ray photoelectron spectrometer(XPS),and other characterization techniques were used to evaluate the atomic structure and chemical composition of the exfoliated nanosheets.A UV photodetector based on individual Sr_(2)Nb_(3)O_(10) nanosheets was prepared to demonstrate the application of an ultraviolet(UV) *** UV photodetector exhibited outstanding photocurrent and responsivity with a responsivity of 3×10^(5) A·W^(-1) at 5 V bias under 280 nm illumination,a photocurrent of 60 nA,and an on/off ratio of 3×10^(2).

关键词： perovskite nanosheets liquid-phase exfoliation ultraviolet photodetector

Electrical discharge and arc milling with automatic tracking of optimal flushing direction:A novel high-efficiency compound machining method

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Chinese Journal of Aeronautics 2024年第3期37卷 351-364页

作者： Xinlei WU Yonghong LIU Pengxin ZHANG liang qi Dege LI Chi MA Renjie JI College of Mechanical and Electronic Engineering China University of Petroleum(East China)Qingdao 266580China School of Mechanical and Power Engineering Nanjing Tech UniversityNanjing 211816China

The arc milling method has the advantages of high machining efficiency and low cost and is independent of the strength and hardness of machined ***,frequent electrode back-offs and the risk of workpiece burning may occur if erosion products are not removed *** this study,it was found that the flushing method of the working medium had a significant impact on the machining performance of arc *** on this,a novel highefficiency compound machining method of electrical discharge and arc milling with automatic tracking of the optimal flushing direction was *** automatic tracking optimizer for external working medium injection was designed to determine the optimal external flushing direction according to the feed *** influence of flushing methods,working mediums,and machining parameters on the machining efficiency,tool electrode wear rate,machining error,and surface integrity of titanium alloys were *** results indicated that better machining performance and environmental friendliness were achieved using the compound flushing method of outer compressed air and inner deionized ***,the automatic tracking flushing method in the opposite direction of the feed direction showed superior results compared to other *** material removal rate with the opposite direction injection could be increased up to 1.62 times that of the same direction,and the relative electrode wear rate could be reduced by 14.76%.This novel method has broad application prospects for machining parts with difficult-to-cut materials in aerospace and military industries.

关键词： Arc milling Dielectric Difficult-to-cut materials Electric discharge machining Erosion Material removal rate

Structure,electronic,and nonlinear optical properties of superalkaline M_(3)O(M=Li,Na)doped cyclo[18]carbon

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Chinese Physics B 2024年第2期33卷 311-317页

作者：刘晓东卢其亮罗其全 School of Physics and Material Science Anhui UniversityHefei 230601China Institute of Physical Science and Information Technology Anhui UniversityHefei 230601China Department of Chemical Physics University of Science and Technology of ChinaHefei 230026China

Cyclo[18]carbon has received considerable attention thanks to its novel geometric configuration and special electronic *** have low ionization *** a superalkali in cyclo[18]carbon is an effective method to improve the optical properties of the system because considerable electron transfer *** this paper,the geometry,bonding properties,electronic structure,absorption spectrum,and nonlinear optical(NLO)properties of superalkaline M_(3)O(M=Li,Na)-doped cyclo[18]carbon were studied by using density functional theory.M_(3)O and the C_(18) rings are not *** C_(18) ring still exhibits alternating long and short *** charge transfer between M_(3)O and C_(18) forms stable[M_(3)O]+[C_(18)]-ionic complexes.C_(18)M_(3)O(M=Li,Na)shows striking optical nonlinearity,i.e.,their first-and second-order hyperpolarizability(βvec andγ||)increase considerably atλ=1907 nm and 1460 nm.

关键词： superalkaline doped cyclocarbon structure and electronic properties nonlinear optical properties density functional theory(DFT)

Reinforced Lewis covalent bond by twinborn nitride heterostructure for lithium-sulfur batteries

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Journal of Energy Chemistry 2024年第1期88卷 363-372,I0009页

作者： Yaochen Song Pengkai Tang Yanjie Wang Yi Wang Linnan Bi qi liang liang He qingyu Xie Yiyong Zhang Peng Dong Yingjie Zhang Yao Yao Jiaxuan Liao Sizhe Wang Yangtze Delta Region Institute(QuZhou) University of Electronic Science and Technology of ChinaQinzhou 324000ZhejiangChina School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731SichuanChina National and Local Joint Engineering Laboratory for Lithium-ion Batteries and Materials Preparation Technology Key Laboratory of Advanced Battery Materials of Yunnan ProvinceFaculty of Metallurgical and Energy EngineeringKunming University of Science and TechnologyKunming 650093YunnanChina School of Materials Science and Engineering Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic MaterialsShaanxi University of Science&TechnologyXi’an 710021ShaanxiChina School of Environmental Science and Engineering North China Electric Power UniversityBaoding 071003HebeiChina

The practical application of lithium-sulfur(Li-S)batteries,as promising next-generation batteries,is hindered by their shuttle effect and the slow redox ***,a tungsten and molybdenum nitride heterostructure functionalized with hollow metal-organic framework-derived carbon(W_(2)N/Mo_(2)N)was proposed as the sulfur *** hollow spherical structure provides storage space for sulfur,enhances electrical conductivity,and inhibits volume *** metal atoms in the nitrides bonded with lithium polysulfides(Li PSs)through Lewis covalent bonds,enhancing the high catalytic activity of the nitrides and effectively reducing the energy barrier of Li PSs redox ***,the high intrinsic conductivity of nitrides and the ability of the heterostructure interface to accelerate electron/ion transport improved the Li+*** leveraging the combined properties of strong adsorption and high catalytic activity,the sulfur host effectively inhibited the shuttle effect and accelerated the redox kinetics of Li ***-efficiency Li+transmission,strong adsorption,and the efficient catalytic conversion activities of Li PSs in the heterostructure were experimentally and theoretically *** results indicate that the W_(2)N/Mo_(2)N cathode provides stable,and long-term cycling(over 2000 cycles)at 3 C with a low attenuation rate of 0.0196%per *** design strategy of a twinborn nitride heterostructure thus provides a functionalized solution for advanced Li-S batteries.

关键词： Heterostructure Adsorption Redox kinetics

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时间、信息与人工智能

物理 2024年第6期53卷 357-367页

作者：祁晓亮斯坦福大学物理系路径积分科技有限公司

近年来，人工智能(AI)大语言模型取得了突飞猛进的发展，将人工智能对人类社会的影响也拓宽到了前所未有的范围。文章将从与物理学有关的两个角度——信息和时间尺度，来谈谈作者对大语言模型带来的人工智能革命的一些不成熟的见解。文... 详细信息

近年来，人工智能(AI)大语言模型取得了突飞猛进的发展，将人工智能对人类社会的影响也拓宽到了前所未有的范围。文章将从与物理学有关的两个角度——信息和时间尺度，来谈谈作者对大语言模型带来的人工智能革命的一些不成熟的见解。文中首先回顾大语言模型的基本原理和近期发展，再讨论从信息的动力学和复杂度的角度如何看待大语言模型的意义。基于人工智能模型和人类认知系统的比较，也会探讨人工智能的下一步发展方向，以及AI智能体方面的探索和发展。

关键词：大语言模型人工智能信息复杂性系统1 系统2

Association between the cumulative triglyceride-glucose index and the recurrence of atrial fibrillation after radiofrequency catheter ablation

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Journal of Geriatric Cardiology 2024年第2期21卷 200-210页

作者： qing YAN Jia-qi liang Yi-De YUAN Yuan LI Jia-Li FAN Wen-Huan WU Pan XU Jia-Hong XUE Department of Cardiovascular Medicine the Second Affiliated Hospital of Xi’an Jiaotong UniversityShaanxiChina Department of Cardiovascular Medicine Zichang People’s HospitalShaanxiChina Department of Ultrasound Xijing HospitalAir Force Military Medical UniversityShaanxiChina

BACKGROUND Triglyceride-glucose(TyG)index values are a new surrogate marker for insulin *** study aimed to explore the relationship between cumulative TyG index values and atrial fibrillation(AF)recurrence after radiofrequency catheter ablation(RFCA).METHODS A total of 576 patients with AF who underwent RFCA at the Second Affiliated Hospital of Xi'an Jiaotong University were included in this *** participants were grouped based on cumulative TyG index values tertiles within 3 months after *** regression and restricted cubic spline analyses were used to determine the relationship between cumulative TyG index values and AF *** predictive value of all risk factors was assessed by receiver operating curve *** There were 375 patients completed the study(age:63.23±10.73 years,64.27%male).The risk of AF recurrence increased with increasing cumulative TyG index values *** adjusting for potential confounders,patients in the medium cumulative TyG index group[hazard ratio(HR)=4.949,95%CI:1.778–13.778,P=0.002]and the high cumulative TyG index group(HR=8.716,95%CI:3.371–22.536,P<0.001)had a higher risk of AF recurrence than those in the low cumulative TyG index *** restricted cubic spline regression model also showed an increased risk of AF recurrence with increasing cumulative TyG index *** considering cumulative TyG index values,left atrial diameter,and lactate dehydrogenase levels as a comprehensive factor,the model could effectively predict AF recurrence after RFCA[area under the curve(AUC)=0.847,95%CI:0.797–0.897,P<0.001].CONCLUSIONS Cumulative TyG index values were a risk factor for AF recurrence after *** longitudinal TyG index values may assist with optimized for risk stratification and outcome prediction for AF recurrence.

关键词： atrial fibrillation index

Cultivating the uncultured:Harnessing the“sandwich agar plate”approach to isolate heme-dependent bacteria from marine sediment

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mLife 2024年第1期3卷 143-155页

作者： Jing Zhang qi-Yun liang Da-Shuai Mu Fengbai Lian Ya Gong Mengqi Ye Guan-Jun Chen Yuqi Ye Zong-Jun Du State Key Laboratory of Microbial Techlogy Insttute of Micrbial TchnoogyShandong UniversityQingdaoChina Marine College Shandong UniverstyWeihaiChina Shandong University-Weihai Research Institute of Industrial Technology WeihaiChina

In the classical microbial isolation technique,the isolation process inevitably destroys all microbial interactions and thus makes it difficult to culture the many microorganisms that rely on these interactions for *** this study,we designed a simple coculture technique named the“sandwich agar plate method,”which maintains microbial interactions throughout the isolation and pure culture *** total yield of uncultured species in sandwich agar plates based on eight helper strains was almost 10-fold that of the control *** uncultured species displayed commensal *** study found that heme was the growth-promoting factor of some marine commensal *** genomic analysis revealed that heme auxotrophies were common in various biotopes and prevalent in many uncultured microbial ***,our study supported that the survival strategies of heme auxotrophy in different habitats varied *** findings highlight that cocultivation based on the“sandwich agar plate method”could be developed and used to isolate more uncultured bacteria.

关键词： cultivation growth factors heme sandwich agar plate uncultured bacteria

Paradoxical herniation associated with hyperbaric oxygen therapy after decompressive craniectomy: A case report

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World Journal of Clinical Cases 2024年第10期12卷 1793-1798页

作者： Zhong-Xing Ye Xin-Xin Fu Yang-Zong Wu Ling Lin liang-qi Xie Yu-Ling Hu Yi Zhou Zhu-Gui You Hai Lin Department of Neurosurgery The Second People's Hospital of Fujian Province(The Second Affiliated Hospital of Fujian University of Traditional Chinese Medicine)Fuzhou 350001Fujian ProvinceChina Department of Neurosurgery The Second Hospital of LongyanLongyan 364000Fujian ProvinceChina Department of Neurosurgery Zhangping City HospitalLongyan 364400Fujian ProvinceChina

BACKGROUND Whether hyperbaric oxygen therapy(HBOT)can cause paradoxical herniation is still *** SUMMARY A 65-year-old patient who was comatose due to brain trauma underwent decompressive craniotomy and gradually regained consciousness after *** was administered 22 d after surgery due to speech *** herniation appeared on the second day after treatment,and the patient’s condition worsened after receiving mannitol treatment at the rehabilitation *** timely skull repair,the paradoxical herniation was resolved,and the patient regained consciousness and had a good recovery as observed at the follow-up *** Paradoxical herniation is rare and may be caused by ***,the underlying mechanism is unknown,and the understanding of this phenomenon is *** use of mannitol may worsen this *** skull repair can treat paradoxical herniation and prevent serious complications.

关键词： Decompressive craniectomy Hyperbaric oxygen therapy Mannitol Paradoxical herniation Case report

Integration of gut microbiota and metabolomics analysis to unravel the neuroprotective effects of Hydroxy-α-sanshool on Alzheimer's Disease

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Food Science and Human Wellness 2024年

作者： Ruo-Lan Li Wen-Wen Chen Hong Zhang qi liang Ling-Yu Wang Wei Peng Chun-Jie Wu State Key Laboratory of Southwestern Chinese Medicine Resources School of Pharmacy Chengdu University of Traditional Chinese Medicine Institute of Innovation Chengdu University of Traditional Chinese Medicine Sichuan Cancer Hospital and Institute School of Medicine University of Electronic Science and Technology of China Chengdu Women's and Children's Central Hospital School of Medicine University of Electronic Science and Technology of China Meishan Hospital of TCM Meishan Hospital Affiliated to Chengdu University of Traditional Chinese Medicine

Alzheimer's disease （AD） is a common neurodegenerative disease， and oxidative stress induced by Aβ deposition is the key cause of neuronal apoptosis in AD patient. Hydroxy-α-sanshool （HAS） is the predominant flavour substances in the pericarp of Zanthoxylum bungeanum Maxim. （Rutaceae family）， which is a known condiment food and herbal medicine in China. We attempt to comprehensively elucidate the pathway and related mechanisms of HAS therapy on AD through in vivo and in vitro experiments. The results showed that HAS could inhibit cell apoptosis， suppress the reactive oxygen species （ROS）， and increase the antioxidative enzymes in Aβ1-42induced HT22 cells. In vivo， HAS attenuated the learning and memory impairment in senescence-accelerated mouse prone 8 （SAMP8） mice， and protected neuronal cells in hippocampus. Interestingly， the 16S rRNA gene sequencing results showed HAS could restore the richness and diversity of the intestinal microbiota， reduce the abundance of Lactobacillus， and increase the abundance of Bateroides and Parabacteroides. Moreover， the contents of 10 metabolites were significantly changed after HAS treatment， which was beneficial to treat AD. In conclusion， HAS could inhibit apoptosis in nerve cells by attenuating Aβ induced oxidative stress level， while it can also influence the metabolic pathways and affect the gut microbiota composition of AD mice.

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