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Programmable microfluidics for dynamic multiband camouflage

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Microsystems & Nanoengineering 2023年第2期9卷 275-282页

作者： Chunzao Feng mingran mao Xiaohui Zhang Yutian Liao Xiaohui Xiao Huidong Liu Kang Liu MOE Key Laboratory of Hydraulic Machinery Transients School of Power and Mechanical EngineeringWuhan UniversityWuhan 430072 HubeiChina

Achieving multiband camouflage covering both visible and infrared regions is challenging due to the broad bandwidth and differentiated regulation demand in diverse regions.In this work,we propose a programmable microfluidic strategy that uses dye molecules in layered fluids to manipulate visible light-and infrared-semitransparent solvent to manipulate infrared light.With three primary fluid inputs,we achieve 64 chromaticity values and 8 emissivities from 0.42 to 0.90.In view of the wide tuning range,we demonstrate that the microfluidic flm can dynamically change its surface reflectance to blend into varying backgrounds in both visible and infrared images.Moreover,we fabricate the microfluidic device in a textile form and demonstrate its ability to match exactly with the colors of natural leaves of different seasons in the full hyperspectrum range.Considering the broadband modulation and ease of operation,the programmable microfluidic strategy provides a feasible approach for smart optical surfaces in long-span optical spectra.

关键词： multiband tuning visible

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电辅助吸附法提锂电极循环稳定性试验研究

化工矿物与加工 2024年第1期53卷 1-7页

作者：单坤鹏洪子鑫毛铭冉胡雪蛟江海峰武汉大学水力机械过渡过程教育部重点实验室武汉大学动力与机械学院中国海油集团能源经济研究院

电辅助吸附法提锂是一种重要的盐湖提锂方法，其核心是吸附电极，吸附电极在多次提锂过程中的循环稳定性会显著影响其使用寿命，进而影响提锂的运行成本。然而电辅助吸附法提锂研究大多关注吸附电极单次提锂性能，忽略了电极循环稳定性... 详细信息

电辅助吸附法提锂是一种重要的盐湖提锂方法，其核心是吸附电极，吸附电极在多次提锂过程中的循环稳定性会显著影响其使用寿命，进而影响提锂的运行成本。然而电辅助吸附法提锂研究大多关注吸附电极单次提锂性能，忽略了电极循环稳定性的影响。基于此，开展了电辅助吸附法中的离子捕获系统试验，提出了镍钴锰三元电极在多次提锂循环过程中的电极脱落物理模型，即在多次循环过程中，三元电极初级晶粒首先出现裂纹，暴露出内部的二级晶粒，电压过高将导致二级晶粒出现裂纹而失效，通过控制吸附解离过程中的截止电压在1 V以下可以较好地维持电极材料的循环稳定性。

关键词：电辅助吸附法提锂循环稳定性阳离子混排截止电压电场调控晶粒

Simulation and evaluation study of atmospheric aerosol nonsphericity as a function of particle size

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Particuology 2024年第7期90卷 281-291页

作者： Qianjun mao Xin Nie School of Urban Construction Wuhan University of Science and TechnologyWuhan430065China College of New Energy and Materials Northeast Petroleum UniversityDaqing163318China

Aerosol nonsphericity causes great uncertainty in radiative forcing assessments and climate simulations.Although considerable studies have attempted to quantify this uncertainty,the relationship between aerosol nonsphericity and particle size is usually not considered,thus reducing the accuracy of the results.In this study,a coupled inversion algorithm combining an improved stochastic particle swarm optimization algorithm and angular light scattering is used for the nonparametric estimation of aerosol nonsphericity variation with particle size,and the optimal sample selection method is employed to screen the data.Based on the verification of inversion accuracy,the variation of aerosol aspect ratio with particle size based on the ellipsoidal model in global regions has been obtained from Aerosol Robotic Network(AERONET)data,and the effect of nonsphericity on radiative forcing and dry deposition has been studied.The results show that the aspect ratio increases with particle size in all regions,with the maximum ranging from 1.4 to 1.8 in the desert,reflecting the differences in aerosol composition at different particle sizes.In radiation calculations,considering aerosol nonsphericity makes the aerosol cooling effect weaker and surface radiative fluxes increase,but hardly changes the aerosol absorption,with maximum differences of 9.22%and 22.12%at the bottom and top of the atmosphere,respectively.Meanwhile,the differences in radiative forcing between aspect ratios as a function of particle size and not varying with particle size are not significant,averaging less than 2%.Besides,the aspect ratio not varying with particle size underestimates the deposition velocity of small particles and overestimates that of large particles compared to that as a function of particle size,with maximum differences of 7%and 4%,respectively.

关键词： Aerosol nonsphericity Inversion Aspect ratio Radiative forcing Dry deposition velocity

Proof of Two Supercongruences of Truncated Hypergeometric Series_(4)F_(3)

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Acta Mathematica Sinica,English Series 2024年第4期40卷 1015-1028页

作者： Guo Shuai mao Department of Mathematics Nanjing University of Information Science and TechnologyNanjing 210044P.R.China

In this paper,we prove two supercongruences conjectured by Z.-W.Sun via the Wilf-Zeilberger method.One of them is,for any prime p>3,4F3[7/6 1/2 1/2 1/2 1/6 1 1]-1/8]-1/2≡p(-2/p)+p^(3)/4(2/p)Ep-3 (mod p^(4))where(·/p... 详细信息

关键词： Supercongruence truncated hypergeometric series Wilf–Zeilberger method Euler numbers Legendre symbol

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Transcatheter aortic valve replacement: A journey of two decades and beyond

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中华医学杂志(英文版) 2024年第9期137卷 1012-1015页

作者： Xiong Tianyuan Chen mao Department of Cardiology West China Hospital Sichuan University Chengdu Sichuan China Laboratory of Cardiac Structure and Function Institute of Cardiovascular Diseases West China Hospital Sichuan University Chengdu Sichuan China

The number of patients with calcific aortic stenosis (AS) is 9.4 million according to 2019 Global Disease Burden estimates,which will continue to increase as the population ages.For the treatment of symptomatic severe AS,transcatheter aortic valve replacement (TAVR) has evolved to be a well-established option across all risk spectra,with a rapid growth of procedures worldwide.The rise of TAVR initiates the revolution of the management of valvular heart diseases,from patient surveillance,the staging of disease,the use of multimodality imaging,the concept of the Heart Team,new designs and iterations of devices to technical innovations and the discovery of unmet clinical needs.As a consequence of the global adoption of TAVR,geographical differences in the epidemiology of AS and patient characteristics have also been further identified.An examination of the changing patient population,current applications and breakthroughs,and remaining challenges are crucial for the future of this technique.Herein,we discuss the temporal utilization of TAVR,the accumulation of evidence and progress of devices,the selection of patients,and some ongoing topics concerning the improvement of TAVR.

关键词： CEREBRAL EMBOLIC PROTECTION OUTCOMES TAVR

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可见红外双波段智能伪装织物

工程热物理学报 2023年第5期44卷 1304-1308页

作者：廖雨田王晨逸毛铭冉刘辉东刘抗武汉大学动力与机械学院武汉430072

随着红外侦测技术的快速发展,提高热物体的红外伪装能力在国防领域具有重要意义。本文提出一种可见红外双波段智能伪装织物,利用纳米多孔吸湿膜红外发射率的温度自适应性,实现织物红外动态伪装;并利用红外透明的表层设计织物颜色,实现... 详细信息

随着红外侦测技术的快速发展,提高热物体的红外伪装能力在国防领域具有重要意义。本文提出一种可见红外双波段智能伪装织物,利用纳米多孔吸湿膜红外发射率的温度自适应性,实现织物红外动态伪装;并利用红外透明的表层设计织物颜色,实现可见与红外兼容伪装。实验表明,当织物温度在22~64℃之间变化时,其红外发射率能在0.95~0.38范围内自适应调节。该织物将可见颜色与红外辐射的调控集于一片柔性布上,在可见红外兼容智能伪装技术领域具有一定的应用前景。

关键词：智能伪装织物红外波可见光

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Amorphous oxide semiconductor for monolithic 3D DRAM: an enabler or passer-by?

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National Science Review 2024年第3期11卷 19-20页

作者： Shujuan mao Guilei Wang Chao Zhao Beijing Superstring Academy of Memory Technology

Since dynamic random-access memory(DRAM) was invented in 1968 and put to market in the 1970s, 1 transistor plus 1 capacitor(1T1C)(Fig. 1a) cells have been used to take advantage of their structural simplicity and ease...

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Advances in mesenchymal stem cells therapy for tendinopathies

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Chinese Journal of Traumatology 2024年第1期27卷 11-17页

作者： Xu-Feng mao Xi-Qian Zhang Zhe-Yu Yao Hai-Jiao mao Department of Orthopaedic Surgery The First Affiliated Hospital of Ningbo UniversityNingbo315010Zhejiang provinceChina

Tendinopathies are chronic diseases of an unknown etiology and associated with inflammation.Mesenchymal stem cells(MSCs)have emerged as a viable therapeutic option to combat the pathological progression of tendinopathies,not only because of their potential for multidirectional differentiation and self-renewal,but also their excellent immunomodulatory properties.The immunomodulatory effects of MSCs are increasingly being recognized as playing a crucial role in the treatment of tendinopathies,with MSCs being pivotal in regulating the inflammatory microenvironment by modulating the immune response,ultimately contributing to improved tissue repair.This review will discuss the current knowledge regarding the application of MSCs in tendinopathy treatments through the modulation of the immune response.

关键词： Mesenchymal stem cells Tendinopathy Immunomodulation Treatment Review

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Autotomy does not affect the locomotor performance of a scorpion

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Integrative Zoology 2024年第2期19卷 336-338页

作者： Aijia mao Shichang ZHANG Centre for Behavioral Ecology and Evolution State Key Laboratory of Biocatalysis and Enzyme EngineeringSchool of Life SciencesHubei UniversityWuhanChina

Autotomy,the self-induced loss of a body part,is one of the most extreme forms of defense against predation.It occurs in a variety of animal taxa,including both vertebrates and invertebrates(Fleming et al.2007).The most commonly seen examples are spiders,lizards,and crustaceans(Emberts et al.2019)(Fig.1).By performing the autotomy behavior,animals can effectively survive predation or non-predatory entrapment,or reduce the cost of injury(Emberts et al.2019;Wuthrich et al.2022).

关键词： scorpion extreme performance