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Nano-Micro Letters 2024年第10期16卷 618-637页

作者： Se In Kim Woong-Ju Kim jin Gu Kang Dong-wan Kim School of Civil Environmental and Architectural EngineeringKorea University02841 SeoulSouth Korea Nanophotonics Research Center Korea Institute of Science and Technology02792 SeoulSouth Korea

Doped two-dimensional(2D)materials hold significant promise for advancing many technologies,such as microelectronics,optoelectronics,and energy ***,n-type 2D oxidized Si nanosheets,namely n-type siloxene(n-SX),are employed as Li-ion battery *** thermal evaporation of sodium hypophosphite at 275℃,P atoms are effectively incorporated into siloxene(SX)without compromising its 2D layered morphology and unique Kautsky-type crystal ***,selective nucleophilic substitution occurs,with only Si atoms being replaced by P atoms in the O_(3)≡Si-H *** resulting n-SX possesses two delocalized electrons arising from the presence of two electron donor types:(i)P atoms residing in Si sites and(ii)H *** doping concentrations are varied by controlling the amount of precursors or their mean free *** at 2000 mA g^(-1),the n-SX electrode with the optimized doping concentration(6.7×10^(19) atoms cm^(-3))delivers a capacity of 594 mAh g^(-1) with a 73%capacity retention after 500 *** improvements originate from the enhanced kinetics of charge transport processes,including electronic conduction,charge transfer,and solid-state *** approach proposed herein offers an unprecedented route for engineering SX anodes to boost Li-ion storage.

关键词： Li-ion battery Two-dimensional N-type siloxene Doping mechanism Kinetics

Modulated symbol-based one-time pad secure transmission scheme using physical layer keys

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Science China(Information Sciences) 2024年第1期67卷 221-239页

作者： Xiaoyan HU Zheng wan Kaizhi HUANG Liang jin Mengyao YAN Yajun CHEN jinmei YANG Information Engineering University Purple Mountain Laboratories for Network and Communication Security

This paper proposes a novel modulated symbols-based one-time pad(SOTP) secure transmission scheme using physical layer *** classical physical layer key generation and exclusive OR(XOR)encryption in the discrete binary space,we design a framework for modulated symbols-based one-time pad(OTP) encryption,where the cryptographic primitive and mathematical model of SOTP is given to build a practical cryptographic *** with existing physical layer encryption(PLE) schemes,we provide rigorous proof that the framework can meet perfect secrecy and correctness *** addition,we provide a specific scheme of physical layer OTP secure transmission for quadrature amplitude modulation(QAM) and phase-shift keying(PSK) symbols based on physical layer *** scheme realizes the unification of bit encryption and symbol encryption,which can adaptively select the quantization level according to the signal-to-noise ratio(SNR) to minimize the symbol error rate(SER).Further,we analyze the performance quantitatively and derive the closed-form expressions of SER,which indicates that the proposed scheme has a lower ***,simulation results verify that the proposed symbol-wise OTP secure transmission scheme can achieve perfect secrecy and high reliability.

关键词： physical layer security one-time pad wireless channel physical layer encryption perfect secrecy

Boosting thermal stability and crystallization of closed-loop-recyclable biodegradable poly(p-dioxanone) by end-group regulation

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Science China Chemistry 2024年第2期67卷 642-651页

作者： jin Lei Zhu-Xin Gui wan-Ting Xiong Gang Wu Si-Chong Chen Yu-Zhong wang The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials(MoE) National Engineering Laboratory of Eco-Friendly Polymeric Materials(Sichuan)State Key Laboratory of Polymer Materials EngineeringCollege of ChemistrySichuan UniversityChengdu610064China

A chemically closed-loop-recyclable biodegradable polymer,poly(p-dioxanone)(PPDO),is one of the ideal candidates for single-use plastic products due to its suitability for different application ***,when PPDO wastes can be collected,its monomer p-dioxanone(PDO) will be obtained through chemical recycling of these wastes;when cannot be collected,the wastes are able to be biodegraded into harmless ***,unsatisfied thermal stability and low crystallization rate of PPDO restrict its wider ***,based on end-group regulation,we simultaneously realized the significant enhancement of thermal stability and crystallization of PPDO through the simple melt processing with tributyl phosphite(TBP) or triphenyl phosphite(TPP).The model reactions were conducted to investigate the reaction mechanism and theoretical products during the preparation of PPDO/phosphite *** kinds of phosphites were proved to act as the end-capped reagent and chain extender in the melt processing,while TBP presented better *** a result,the activation energy of thermal decomposition was largely elevated,and the unprecedented T_(5%)(the temperature at a weight loss of 5%) and Tmax(the temperature at a maximum rate of weight loss) of PPDO were obtained,i.e.,T_(5%)of ~330 ℃ and Tmaxof ~385 ℃ in N_(2) atmosphere,T_(5%)of ~240 ℃ and Tmaxof ~317 ℃ in air atmosphere,***,the increased crystallization rate,crystallinity,crystalline orderliness,and realizable monomer recovery(yield >90%,purity >99.9%) of PPDO/phosphite compounds were confirmed.

关键词： poly(p-dioxanone) phosphite thermal stability crystallization end-group regulation

Association of autoimmune thyroid disease with type 1 diabetes mellitus and its ultrasonic diagnosis and management

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World Journal of Diabetes 2024年第3期15卷 348-360页

作者： jin wang Ke wan Xin Chang Rui-Feng Mao Department of Ultrasound Medicine Nanjing Lishui People’s HospitalZhongda Hospital Lishui BranchSoutheast UniversityNanjing 211200Jiangsu ProvinceChina Faculty of Medicine and Health The University of SydneyCamperdown NSW 2050Australia School of Life Science Huaiyin Normal UniversityHuai'an 223300Jiangsu ProvinceChina

As a common hyperglycemic disease,type 1 diabetes mellitus(T1DM)is a complicated disorder that requires a lifelong insulin supply due to the immunemediated destruction of pancreaticβ*** it is an organ-specific autoimmune disorder,T1DM is often associated with multiple other autoimmune *** most prevalent concomitant autoimmune disorder occurring in T1DM is autoimmune thyroid disease(AITD),which mainly exhibits two extremes of phenotypes:hyperthyroidism[Graves'disease(GD)]and hypothyroidism[Hashimoto's thyroiditis,(HT)].However,the presence of comorbid AITD may negatively affect metabolic management in T1DM patients and thereby may increase the risk for potential diabetes-related ***,routine screening of thyroid function has been recommended when T1DM is ***,first,we summarize current knowledge regarding the etiology and pathogenesis mechanisms of both ***,an updated review of the association between T1DM and AITD is ***,we provide a relatively detailed review focusing on the application of thyroid ultrasonography in diagnosing and managing HT and GD,suggesting its critical role in the timely and accurate diagnosis of AITD in T1DM.

关键词： Type 1 diabetes mellitus Autoimmunity Autoimmune thyroid disease Ultrasonography Diagnosis

Idiopathic mesenteric phlebosclerosis missed by a radiologist at initial diagnosis: A case report

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World Journal of Clinical Cases 2024年第10期12卷 1810-1816页

作者： Min wang Yu-Xia wan jin-Wen Liao Fei Xiong Department of Gastroenterology Changning County People’s HospitalYibin 644300Sichuan ProvinceChina Department of Gastroenterology Qianwei People’s HospitalLeshan 614400Sichuan ProvinceChina Department of Gastroenterology The People’s Hospital of Jianyang CityChengdu 641400Sichuan ProvinceChina Department of Gastroenterology Sichuan Provincial People’s HospitalUniversity of Electronic Science and Technology of ChinaChengdu 610000Sichuan ProvinceChina

BACKGROUND Idiopathic mesenteric phlebosclerosis(IMP)is a rare type of ischemic colitis characterized by thickening of the wall of the right hemicolon and calcification,sclerosis,and fibrosis of mesenteric *** diagnosis of IMP is based on typical clinical features and imaging *** report a case of IMP that was initially missed by the *** SUMMARY A 77-year-old woman was admitted to the hospital due to chronic diarrhea for over 2 *** had been consuming Chinese patent medicines(CPM)containing fructus gardeniae for more than 15 *** revealed an edematous mucosa,bluish-purple discoloration,erosions,and ulcerations throughout the colorectal *** computed tomography(CT)showed diffuse mural thickening of the entire colorectum,with tortuous thread-like calcifications in the right hemicolon,left hemicolon,and *** of the calcifications were located in the mesenteric *** diagnosis of IMP was established based on medical history,colonoscopy,CT findings,and histopathological *** patient was treated conservatively with papaverine and rifaximin,and CPM was *** diarrhea symptoms improved,indicating the effectiveness of the *** the next several years,she took opium alkaloids for an extended period and did not require hospitalization for the aforementioned gastrointestinal *** IMP is a rare gastrointestinal disease affecting Asian populations,possibly related to long-term herbal medicine *** imaging analysis is crucial for diagnosis,but insufficient understanding of the disease can lead to misdiagnosis or missed *** strategies should be personalized.

关键词： Idiopathic mesenteric phlebosclerosis Computed tomography Colonoscopy Chinese patent medicines Fructus gardeniae Case report

Wearable pressure sensors based on antibacterial and porous chitosan hydrogels for full-range human motion detection

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Science China Technological Sciences 2024年第8期67卷 2475-2484页

作者： ZHANG YingXin LIU HanGuang jin ShunYu LI YaJuan ZHANG wan ZHOU Hang NIE ZanXiang HUANG Yuan School of Microelectronics Science and Technology Sun Yat-sen University Hefei National Research Center for Physical Sciences at the Microscale University of Science and Technology of China Department of Clinical Laboratory the First Affiliated Hospital of Anhui Medical University School of Electronic and Computer Engineering Peking University Shenzhen Graduate School Zinergy Shenzhen Ltd.

Wearable pressure sensors made from conductive hydrogels hold significant potential in health monitoring. However, limited pressure range（Pa to hundreds of kPa） and inadequate antibacterial properties restrict their practical applications in diagnostic and health evaluation. Herein, a wearable high-performance pressure sensor was assembled using a facilely prepared porous chitosan-based hydrogel, which was constructed from commercial phenolphthalein particles as a sacrificial template. The relationship between the porosity of hydrogels and sensing performance of sensors was systematically explored. Herein, the wearable pressure sensor, featuring an optimized porosity of hydrogels, exhibits an ultrawide sensing capacity from 4.83 Pa to 250 k Pa（range-to-limit ratio of 51,760） and high sensitivity throughout high pressure ranges(0.7 kPa-1, 120–250 kPa). The presence of chitosan endows these hydrogels with outstanding antibacterial performance against E. coli and S. aureus, making them ideal candidates for use in wearable electronics. These features allow for a practical approach to monitor full-range human motion using a single device with a simple structure.

关键词： porous hydrogels antibacterial performances wearable pressure sensors full-range human motion chitosan

Effect of Shrinkage Reducing Agent and Steel Fiber on the Fluidity and Cracking Performance of Ultra-High Performance Concrete

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Fluid Dynamics & Materials Processing 2024年第9期20卷 1941-1956页

作者： Yong wan Li Li Jiaxin Zou Hucheng Xiao Mengdi Zhu Ying Su jin Yang Wuhan Metro Bridge and Tunnel Management Co. Ltd.Wuhan430068China School of Civil Engineering Architecture and EnvironmentHubei University of TechnologyWuhan430068China

Due to the low water-cement ratio of ultra-high-performance concrete(UHPC),fluidity and shrinkage cracking are key aspects determining the performance and durability of this type of *** this study,the effects of different types of cementitious materials,chemical shrinkage-reducing agents(SRA)and steel fiber(SF)were *** with M2-UHPC and M3-UHPC,M1-UHPC was found to have better fluidity and shrinkage cracking ***,different SRA incorporation methods,dosage and different SF types and aspect ratios were *** incorporation of SRA and SF led to a decrease in the fluidity of *** internal content of 1%(NSRA-1%),SRA external content of 1%(WSRA-1%),STS-0.22 and STE-0.7 decreased the fluidity of UHPC by 3.3%,8.3%,9.2%and 25%,***,SRA and SF improved the UHPC shrinkage cracking ***-1%and STE-0.7 reduced the shrinkage value of UHPC by 40%and 60%,respectively,and increased the crack resistance by 338%and 175%,*** addition,the addition of SF was observed to make the microstructure of UHPC more compact,and the compressive strength and flexural strength of 28 d were increased by 26.9%and 19.9%,respectively.

关键词： Ultra-high performance concrete chemical shrinkage reducing agent steel fiber shrinkage cracking repair and reinforcement

Frequency and associated factors of accommodation and non-strabismic binocular vision dysfunction among medical university students

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International Journal of Ophthalmology(English edition) 2024年第2期17卷 374-379页

作者： Jie Cai Wen-Wen Fan Yun-Hui Zhong Cai-Lan Wen Xiao-Dan Wei wan-Chen Wei wan-Yan Xiang jin-Mao Chen Department of Ophthalmology First Affiliated Hospital of Guangxi Medical UniversityNanning 530021Guangxi Zhuang Autonomous RegionChina Digital and Intelligent Technology Transformation and Application Research Institute of Visual Function Tianjin 300000China Guangxi Medical University Nanning 530021Guangxi Zhuang Autonomous RegionChina

AIM:To investigate the frequency and associated factors of accommodation and non-strabismic binocular vision dysfunction among medical university ***:Totally 158 student volunteers underwent routine vision examination in the optometry clinic of Guangxi Medical *** data were used to identify the different types of accommodation and nonstrabismic binocular vision dysfunction and to determine their *** analysis and logistic regression were used to examine the factors associated with these ***:The results showed that 36.71%of the subjects had accommodation and non-strabismic binocular vision issues,with 8.86%being attributed to accommodation dysfunction and 27.85%to binocular *** insufficiency(CI)was the most common abnormality,accounting for 13.29%.Those with these abnormalities experienced higher levels of eyestrain(χ2=69.518,P<0.001).The linear correlations were observed between the difference of binocular spherical equivalent(SE)and the index of horizontal esotropia at a distance(r=0.231,P=0.004)and the asthenopia survey scale(ASS)score(r=0.346,P<0.001).Furthermore,the right eye's SE was inversely correlated with the convergence of positive and negative fusion images at close range(r=-0.321,P<0.001),the convergence of negative fusion images at close range(r=-0.294,P<0.001),the vergence facility(VF;r=-0.234,P=0.003),and the set of negative fusion images at far range(r=-0.237,P=0.003).Logistic regression analysis indicated that gender,age,and the difference in right and binocular SE did not influence the emergence of these ***:Binocular vision abnormalities are more prevalent than accommodation dysfunction,with CI being the most frequent *** binocular refractive disparity leads to more severe eyestrain symptoms.

关键词： optometry clinic non-strabismic binocular vision dysfunction college students convergence insufficiency

Specifications and control of spatial frequency errors of components in two-beam laser static holographic exposure for pulse compression grating fabrication

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High Power Laser Science and Engineering 2024年第1期12卷 1-12页

作者： Chen Hu Songlin wan Guochang Jiang Haojin Gu Yibin Zhang Yunxia jin Shijie Liu Chengqiang Zhao Hongchao Cao Chaoyang Wei Jianda Shao Precision Optical Manufacturing and Testing Center Shanghai Institute of Optics and Fine MechanicsChinese Academy of Sciences(CAS)ShanghaiChina Key Laboratory for High Power Laser Material of Chinese Academy of Sciences Shanghai Institute of Optics and Fine MechanicsCASShanghaiChina Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijingChina Hangzhou Institute for Advanced Study University of Chinese Academy of SciencesHangzhouChina China-Russian Belt and Road Joint Laboratory on Laser Science ShanghaiChina

The large-aperture pulse compression grating(PCG) is a critical component in generating an ultra-high-intensity, ultra-short-pulse laser;however, the size of the PCG manufactured by transmission holographic exposure is limited to large-scale high-quality materials. The reflective method is a potential way for solving the size limitation, but there is still no successful precedent due to the lack of scientific specifications and advanced processing technology of exposure mirrors. In this paper, an analytical model is developed to clarify the specifications of components, and advanced processing technology is adopted to control the spatial frequency errors. Hereafter, we have successfully fabricated a multilayer dielectric grating of 200 mm × 150 mm by using an off-axis reflective exposure system with Φ300 mm. This demonstration proves that PCGs can be manufactured by using the reflection holographic exposure method and shows the potential for manufacturing the meter-level gratings used in 100 petawatt class high-power lasers.

关键词： high-power laser off-axis reflective exposure system pulse compression grating spatial frequency errors specifications

Salidroside Ameliorates Lung Injury Induced by PM_(2.5) by Regulating SIRT1-PGC-1αin Mice

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Biomedical and Environmental Sciences 2024年第4期37卷 367-376页

作者： LI Xiao Hong LIU Yu Mei SHAN Hui TAN jin Feng ZHOU Jian SONG Yuan jin LI Si Qi LIU Chen XU Dong Qun YU Li LI wan Wei School of Public Health Shandong Second Medical UniversityWeifang 261053ShandongChina Key Laboratory of Health Inspection and Quarantine Weifang 261053ShandongChina Weifang Environmental Monitoring Station Weifang 261042ShandongChina Department of Orthopedics The 80th Army Hospital of PLAWeifang 261000ShandongChina Environment and Health Related Product Safety Institute of Chinese Center for Disease Control and Prevention Beijing 100021China School of Basic Medicine Shandong Second Medical UniversityWeifang 261053ShandongChina

Objective This study aimed to clarify the intervention effect of salidroside(SAL)on lung injury caused by PM_(2.5) in mice and illuminate the function of SIRT1-PGC-1ɑ*** Specific pathogen-free(SPF)grade male C57BL/6 mice were randomly assigned to the following groups:control group,SAL group,PM_(2.5) group,SAL+PM_(2.5) *** the first day,SAL was given by gavage,and on the second day,PM_(2.5) suspension was given by intratracheal *** whole experiment consist of a total of 10 cycles,lasting 20 *** the end of treatment,blood samples and lung tissues were collected and *** of pathological changes in lung tissue using inverted microscopy and transmission electron *** expression of inflammatory,antioxidants,apoptosis,and SIRT1-PGC-1ɑproteins were detected by Western *** Exposure to PM_(2.5) leads to obvious morphological and pathologica changes in the lung of ***_(2.5) caused a decline in levels of antioxidant-related enzymes and protein expressions of HO-1,Nrf2,SOD2,SIRT1 and PGC-1ɑ,and an increase in the protein expressions of IL-6,IL-1β,Bax,caspase-9 and cleaved ***,SAL reversed the aforementioned changes caused by PM_(2.5) by activating the SIRT1-PGC-1α *** SAL can activate SIRT1-PGC-1ɑ to ameliorate PM2.5-induced lung injury.

关键词： PM_(2.5) Salidroside Oxidative stress Inflammation Apoptosis SIRT1-PGC-1α