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Artificial cavernosa-like tissue based on multibubble Matrigel and a human corpus cavernous fibroblast scaffold

Asian Journal of Andrology 2024年第3期26卷 260-267页

作者： Yu-Zhuo chen Yi-hong Zhou min-Bo yan ming Xiao Biao liu Ying-Hao Yin Xiao-li Tan yong-Quan Huang Yu-hong lin Ting Xie Jia-li Tian Qi Wang Jian-Ying li Zi-Zhou Meng Zheng li Emily Xing Yu-Xin Tang Ya-wei li Zhong-Zhen Su liang-Yu zhao Department of Ultrasound The Fifth Affiliated HospitalSun Yat-sen UniversityZhuhai 519000China Department of Interventional Medicine Guangdong Provincial Key Laboratory of Biomedical ImagingThe Fifth Affiliated HospitalSun Yat-sen UniversityZhuhai 519000China Department of Urology The Fifth Affiliated HospitalSun Yat-sen UniversityZhuhai 519000China Department of Andrology the Center for Men’s HealthUrologic Medical CenterShanghai Key Laboratory of ReproductiveMedicineShanghai General HospitalShanghai Jiao Tong University School of MedicineShanghai 200080China Cedars-Sinai Medical Center Los AngelesCA 90024USA

Ex vivo tissue culture of the human corpus cavernosum(cc)can be used to explore the tissue structural changes and complex signaling *** present,artificial Cc-like tissues based on acellular or three-dimensional(3D)-printed scaffolds are used to solve the scarcity of primary penis tissue ***,inconvenience and high costs limit the wide application of such ***,we describe a simple,fast,and economical method of constructing artificial CC-like *** Cc fibroblasts(FBs),endothelial cells(ECs),and smooth muscle cells(SMCs)were expanded in vitro and mixed with Matrigel in specific proportions.A large number of bubbles were formed in the mixture by vortexing combined with pipette blowing,creating a porous,spongy,and spatial *** Cc FBs produced a variety of signaling factors,showed multidirectional differentiation potential,and grew in a 3D grid in Matrigel,which is necessary for CC-like tissue to maintain a porous structure as a cell *** the C-like tissue,ECs covered the surface of the lumen,and SMCs were located inside the trabeculae,similar to the structure of the primary *** cell components remained stable for 3 days in vitro,but the EC content decreased on the 7th ***/integrated(WNT)signaling activation led to lumen atrophy and increased tissue fibrosis in CC-like tissue,inducing the same changes in characteristics as in the primary *** study describes a preparation method for human artificial cC-like tissue that may provide an improved experimental platform for exploring the function and structure of the cC and conducting drug screening for erectile dysfunction therapy.

关键词： artificial tissue corpus cavernosum ex vivo fibroblasts

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Assembling S-scheme heterojunction between basic bismuth nitrate and bismuth tungstate with promoting charges’separation for accelerated photocatalytic sulfamethazine degradation

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Journal of Materials Science & Technology 2024年第4期171卷 185-197页

作者： Wenhan chen Meng Dai li xiang Shan zhao Shuguang Wang Zuoli He Shandong Key Laboratory of Water Pollution Control and Resource Reuse Shandong Key Laboratory of Environmental Processes and HealthSchool of Environmental Science and EngineeringShandong UniversityQingdao 266237China CEDAR Knight Cancer InstituteSchool of MedicineOregon Health and Science UniversityPortlandOR 97201United States weihai Research Institute of Industrial Technology of Shandong University Shandong UniversityWeihai 264209China

The S-scheme heterojunction has garnered increasing attention due to its remarkable oxidation capacity and efficient separation of photogenerated *** this study,a one-pot glycerol-assisted hydrothermal process was utilized to successfully synthesize S-scheme heterojunction photocatalysts comprising basic bismuth nitrate(BBN)and bismuth tungstate(BWO).Interestingly,the BBN/BWO heterogeneous photo-catalysts exhibited the highest photocatalytic *** optimized product achieved the degradation of sulfamethazine(SMZ)within 1 h,with a kinetic constant(k)value of 0.05818 min^(−1).The degradation process was influenced significantly by·O^(2)−and h^(+)*** determine the degradation pathway of SMZ in the presence of BBN/BWO-0.6,liquid chromatography-mass spectrometry(LC-MS)analysis was performed,which revealed a decrease in the toxicity of intermediates and *** enhanced pho-tocatalytic activity can be attributed to the internal electric field(IEF)of the S-scheme heterojunction between BBN and BWO,effectively promoting the separation of photogenerated *** research presents a viable approach for developing S-scheme heterojunctions in SMZ photodegradation and other environmental applications.

关键词： Photocatalysis S-scheme Heterojunction Bi_(2)WO_(6) Sulfamethazine

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Robust textile-based spoof plasmonic frequency scanning antenna for on-body IoT applications

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Science China(Information Sciences) 2024年第8期67卷 269-284页

作者： zhao-min chen Jun-lin ZHAN Hao chen Ya li hongjun HE Wu yanG Zhen-Guo liU wei-Bing LU State Key Lab of Millimeter Waves School of Information Science and EngineeringSoutheast University Center for Flexible RF Technology Frontiers Science Center for Mobile Information Communication and SecuritySoutheast University Future Research Laboratory China Mobile Research Institute Purple Mountain Laboratories

Securing a comfortable, wearable compact frequency beam scanning antenna(FBSA) with robustness to deformation, low specific absorption rate(SAR), and good coverage of the surrounding environment for Internet of Things(IoT) applications, such as on-body navigation and wireless communication is an emerging challenge. In this work, a robust textile-based spoof plasmonic frequency scanning antenna utilizing higher-order modes is presented, which is also robust to deformation caused by the activities of the human body. The innovative design of the element ensures the high-efficiency transmission of the fundamental mode of spoof surface plasmon polaritons(SSPP) structure, providing the potential of being a multifunctional composite device in the compact on-body network. Besides, an artificial magnetic conductor(AMC) is designed underneath the SSPP structure, obtaining a low SAR value(0.113 W/kg), which ensures the safety of users. As a practical realization of this concept, a textile-based spoof plasmonic antenna was fabricated in the microwave regime and the performed experimental results show the proposed antenna has a single-beam radiation characteristic with a 70° beam scanning angle range when the frequency is 4.7–6.0 GHz with a high average realized gain of 13.15 dBi. And it still maintains a steady performance when faced with structure deformation, which proves its robustness. Wireless communication quality experiments are performed to demonstrate the proposed antenna can measure the angles of targets and realize wireless signal transmission to specific targets as the frequency varies, it may find great potential in the field of on-body IoT applications.

关键词： frequency beam scanning antenna (FBSA) Internet of Things (IoT) on-body communication spoof surface plasmon polaritons (SSPP) textile-based antenna

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Machine learning optimization strategy of shaped charge liner structure based on jet penetration efficiency

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Defence Technology（防务技术） 2024年第9期39卷 23-41页

作者： Ziqi zhao Tong li Donglin Sheng Jian chen Amin yan yan chen Haiying Wang Xiaowei chen Lanhong Dai State Key Laboratory of Nonlinear Mechanics Institute of MechanicsChinese Academy of SciencesBeijing 100190China School of Future Technology University of Chinese Academy of SciencesBeijing 100049 China School of Engineering Science University of Chinese Academy of SciencesBeijing 100049China State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing 100081China

Shaped charge liner(SCL)has been extensively applied in oil recovery and defense *** superior penetration capability through optimizing SCL structures presents a substantial challenge due to intricate rate-dependent processes involving detonation-driven liner collapse,high-speed jet stretching,and *** study introduces an innovative optimization strategy for SCL structures that employs jet penetration efficiency as the primary objective *** strategy combines experimentally validated finite element method with machine learning(FEM-ML).We propose a novel jet penetration efficiency index derived from enhanced cutoff velocity and shape characteristics of the jet via machine *** index effectively evaluates the jet penetration ***,a multi-model fusion based on a machine learning optimization method,called XGBOOST-MFO,is put forward to optimize SCL structure over a large input *** strategy's feasibility is demonstrated through the optimization of copper SCL implemented via the FEM-ML ***,this strategy is extended to optimize the structure of the recently emerging CrMnFeCoNi high-entropy alloy conical liners and hemispherical copper ***,the strategy can provide helpful guidance for the engineering design of SCL.

关键词： Jet penetration efficiency Shaped charge liner FEM-ML XGBOOST MFO High-entropy alloy

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Evaluation of the clinical effects of atropine in combination with remifentanil in children undergoing surgery for acute appendicitis

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World Journal of Gastrointestinal Surgery 2024年第7期16卷 2065-2072页

作者： Yu-Juan li yong-yan chen Xia-Lan lin wei-Zhi Zhang Department of Anesthesiology Shanxi Provincial Children’s HospitalTaiyuan 030013Shanxi ProvinceChina

BACKGROUND Acute appendicitis(AA)is the most common cause of acute abdomen in *** significantly influences the surgical treatment of AA in children,making the scientific and effective selection of anesthetics *** To assess the clinical effect of atropine(ATR)in combination with remifentanil(REMI)in children undergoing surgery for *** In total,108 cases of pediatric AA treated between May 2020 and May 2023 were selected,58 of which received ATR+REMI[research group(RG)]and 50 who received REMI[control group(CG)].Comparative analyses were conducted on the time to loss of eyelash reflex,pain resolution time,recovery time from anesthesia,incidence of adverse events(AEs;respiratory depression,hypoxemia,bradycardia,nausea and vomiting,and hypotension),intraoperative responses(head shaking,limb activity,orientation recovery,safe departure time from the operating room),hemodynamic parameters[oxygen saturation(SPO2),mean arterial pressure,heart rate,and respiratory rate],postoperative sedation score(Ramsay score),and pain level[the Face,Legs,Activity,Cry,Consolability(FLACC)Behavioral Scale].RESULTS Compared with the CG,the RG showed significantly shorter time to loss of eyelash reflex,pain resolution,recovery from anesthesia,and safe departure from the operating ***,the incidence rates of overall AEs(head shaking,limb activity,etc.)were lower,and influences on intraoperative hemodynamic parameters and stress response indexes were *** Ramsay score at 30 min after extubation and the FLACC score at 60 min after extubation were significantly lower in the RG than in the *** ATR+REMI is superior to REMI alone in children undergoing AA surgery,with a lower incidence of AEs,fewer influences on hemodynamics and stress responses,and better post-anesthesia recovery.

关键词： Atropine Remifentanil Pediatric acute appendicitis Surgery Clinical efficacy

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Embryo Transfer Strategies for Women with Recurrent Implantation Failure During the Frozen-thawed Embryo Transfer Cycles:Sequential Embryo Transfer or Double-blastocyst Transfer?

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Current Medical Science 2024年第1期44卷 212-222页

作者： Qiao-hang zhao Yu-wei SONG Jian chen xiang ZHOU Ji-lai XIE Qiu-ping YAO Qi-yin DONG Chun FENG li-ming ZHOU wei-ping FU min JIN The Second Affiliated Hospital of Zhejiang University School of Medicine Hangzhou 310052China Jiaxing Maternity and Child Health Care Hospital Jiaxing 314051China Huzhou Maternity and Child Care Hospital Huzhou 313002China Ningbo Women and Children's Hospital Ningbo 315000China

Objective Both sequential embryo transfer(SeET)and double-blastocyst transfer(DBT)can serve as embryo transfer strategies for women with recurrent implantation failure(RIF).This study aims to compare the effects of SeET and DBT on pregnancy *** Totally,261 frozen-thawed embryo transfer cycles of 243 RIF women were included in this multicenter retrospective *** to different embryo quality and transfer strategies,they were divided into four groups:group A,good-quality SeET(GQ-SeET,n=38 cycles);group B,poor-quality or mixed-quality SeET(PQ/MQ-SeET,n=31 cycles);group C,good-quality DBT(GQ-DBT,n=121 cycles);and group D,poor-quality or mixed-quality DBT(PQ/MQ-DBT,n=71 cycles).The main outcome,clinical pregnancy rate,was compared,and the generalized estimating equation(GEE)model was used to correct potential confounders that might impact pregnancy *** GQ-DBT achieved a significantly higher clinical pregnancy rate(aOR 2.588,95%CI 1.267–5.284,P=0.009)and live birth rate(aOR 3.082,95%CI 1.482–6.412,P=0.003)than PQ/***,the clinical pregnancy rate was significantly higher in GQ-SeET than in PQ/MQ-SeET(aOR 4.047,95%CI 1.218–13.450,P=0.023).The pregnancy outcomes of GQ-SeET were not significantly different from those of GQ-DBT,and the same results were found between PQ/MQ-SeET and PQ/*** SeET relative to DBT did not seem to improve pregnancy outcomes for RIF patients if the embryo quality was comparable between the two *** clinical pregnancy outcomes could be obtained by transferring good-quality embryos,no matter whether in SeET or *** quality plays a more important role in pregnancy outcomes for RIF patients.

关键词： recurrent implantation failure sequential embryo transfer frozen-thawed embryo transfer embryo transfer strategies

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Expert consensus on the diagnosis and treatment of macrolide-resistant Mycoplasma pneumoniae pneumonia in children

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World Journal of Pediatrics 2024年第9期20卷 901-914页

作者： Ying-Shuo Wang Yun-lian Zhou Guan-Nan Bai Shu-Xian li Dan Xu li-Na chen Xing chen Xiao-yan Dong hong-min Fu Zhou Fu Chuang-li Hao Jian-Guo hong En-Mei liu Han-min liu Xiao-Xia Lu Zheng-Xiu Luo Lan-Fang Tang Man Tian yong Yin Xiao-Bo Zhang Jian-Hua Zhang Hai-lin Zhang De-Yu zhao Shun-Ying zhao Guo-hong Zhu Ying-Xue Zou Quan Lu Yuan-Yuan Zhang Zhi-min chen Department of Pulmonology Children’s HospitalZhejiang University School of MedicineNational Clinical Research Center for Child HealthHangzhou 310052China Department of Child Health Care Children’s HospitalZhejiang University School of MedicineNational Clinical Research Center for Child HealthHangzhou 310052China Department of Pediatric Pulmonology and Immunology West China Second University HospitalSichuan UniversityChengdu 610041China Department of Pediatrics Shandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinan 250021China Department of Pulmonology Shanghai Children’s HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai 200062China Department of Pulmonary and Critical Care Medicine Kunming Children’s HospitalKunming 650034China Department of Respiratory Medicine Children’s Hospital of Chongqing Medical UniversityChongqing 400014China Department of Pulmonology Children’s Hospital of Soochow UniversitySuzhou 215003China Department of Pediatrics Shanghai General Hospital Affiliated to Shanghai Jiaotong University School of MedicineShanghai 200080China Department of Respiratory Medicine Wuhan Children’s HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430015China Department of Respiratory Medicine Children’s Hospital of Nanjing Medical UniversityNanjing 210008China Department of Respiratory Medicine Shanghai Children’s Medical CenterShanghai Jiao Tong University School of MedicineShanghai 200127China Department of Respiratory Medicine Children’s Hospital of Fudan UniversityShanghai 201102China Department of Pediatric Pulmonology Xinhua HospitalShanghai Jiaotong University School of MedicineShanghai 201102China Department of Pediatric Respiratory Medicine The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical UniversityWenzhou 325027China National Clinical Research Center for Respiratory Diseases Beijing Children’s HospitalCapital Medical UniversityBeijing 100045China Departmen

Background Mycoplasma pneumoniae(***)is a significant contributor to community-acquired pneumonia among *** 1968,when a strain of *** resistant to macrolide antibiotics was initially reported in Japan,macrolide-resistant ***(MRMP)has been documented in many countries worldwide,with varying incidence *** infections lead to a poor response to macrolide antibiotics,frequently resulting in prolonged fever,extended antibiotic treatment,increased hospitalization,intensive care unit admissions,and a significantly higher proportion of patients receiving glucocorticoids or second-line *** 2000,the global incidence of MRMP has gradually increased,especially in East Asia,which has posed a serious challenge to the treatment of *** infections in children and attracted widespread attention from ***,there is still no global consensus on the diagnosis and treatment of MRMP in *** We organized 29 Chinese experts majoring in pediatric pulmonology and epidemiology to write the world’s first consensus on the diagnosis and treatment of pediatric MRMP pneumonia,based on evidence *** evidence searches and reviews were conducted using electronic databases,including PubMed,Embase,Web of Science,CNKI,Medline,and the Cochrane *** used variations in terms for“macrolide-resistant”,“Mycoplasma pneumoniae”,“MP”,“***”,“pneumonia”,“MRMP”,“lower respiratory tract infection”,“Mycoplasma pneumoniae infection”,“children”,and“pediatric”.Results Epidemiology,pathogenesis,clinical manifestations,early identification,laboratory examination,principles of antibiotic use,application of glucocorticoids and intravenous immunoglobulin,and precautions for bronchoscopy are *** and rapid identification of gene mutations associated with MRMP is now available by polymerase chain reaction and fluorescent probe techniques in respiratory *** the resistance rate to mac

关键词： Child Macrolide-resistant Mycoplasma pneumoniae Recommendation Diagnosis Treatment

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High-resolution short-term prediction of the COVID-19 epidemic based on spatial-temporal model modified by historical meteorological data

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Fundamental Research 2024年第3期4卷 527-539页

作者： Bin chen Ruming chen lin zhao Yuxiang Ren li Zhang Yingjie zhao Xinbo lian wei yan Shuoyuan Gao College of Atmospheric Sciences Lanzhou UniversityLanzhou 730000China Collaborative Innovation Center of Western Ecological Security Lanzhou UniversityLanzhou 730000China

In the global challenge of Coronavirus disease 2019(COVID-19)pandemic,accurate prediction of daily new cases is crucial for epidemic prevention and socioeconomic *** contrast to traditional local,one-dimensional time-series data-based infection models,the study introduces an innovative approach by formulating the short-term prediction problem of new cases in a region as multidimensional,gridded time series for both input and prediction targets.A spatial-temporal depth prediction model for COVID-19(ConvLSTM)is presented,and further ConvLSTM by integrating historical meteorological factors(Meteor-ConvLSTM)is refined,considering the influence of meteorological factors on the propagation of *** correlation between 10 meteorological factors and the dynamic progression of COVID-19 was evaluated,employing spatial analysis techniques(spatial autocorrelation analysis,trend surface analysis,etc.)to describe the spatial and temporal characteristics of the *** the original ConvLSTM,an artificial neural network layer is introduced to learn how meteorological factors impact the infection spread,providing a 5-day forecast at a 0.01°×0.01°pixel *** results using real dataset from the 3.15 outbreak in Shanghai demonstrate the efficacy of Meteor-ConvLSTM,with reduced RMSE of 0.110 and increased R^(2) of 0.125(original ConvLSTM:RMSE=0.702,R^(2)=0.567;Meteor-ConvLSTM:RMSE=0.592,R^(2)=0.692),showcasing its utility for investigating the epidemiological characteristics,transmission dynamics,and epidemic development.

关键词： COVID-19 Prediction ConvLSTM Refined prediction Meteorological factors Spatial-temporal analysis

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Intelligent UAV Based Energy Supply for 6G Wireless Powered IoT Networks

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China Communications 2024年第9期21卷 321-337页

作者： Miao Jiansong chen Haoqiang Wang Pengjie li Hairui zhao yan Mu Junsheng yan Shi School of Information and Communication Engineering Beijing University of Posts and TelecommunicationsBeijing 100876China Beijing Key Laboratory of Network System Architecture and Convergence Beijing University of Posts and TelecommunicationsBeijing 100876China

In this paper,we develop a 6G wireless powered Internet of Things(IoT)system assisted by unmanned aerial vehicles(UAVs)to intelligently supply energy and collect data at the same *** our dual-UAV scheme,UAV-E,with a constant power supply,transmits energy to charge the IoT devices on the ground,whereas UAV-B serves the IoT devices by data collection as a base *** this framework,the system's energy efficiency is maximized,which we define as a ratio of the sum rate of IoT devices to the energy consumption of two UAVs during a fixed working *** the constraints of duration,transmit power,energy,and mobility,a difficult non-convex issue is presented by optimizing the trajectory,time duration allocation,and uplink transmit power of *** tackle the non-convex fractional optimization issue,we deconstruct it into three subproblems and we solve each of them iteratively using the descent method in conjunction with sequential convex approximation(SCA)approaches and the Dinkelbach *** simulation findings indicate that the suggested cooperative design has the potential to greatly increase the energy efficiency of the 6G intelligent UAV-assisted wireless powered IoT system when compared to previous benchmark systems.

关键词： 6G wireless powered network energy efficiency IoT intelligent network UAV communication

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Hydrogen sulfide responsive nanoplatforms: Novel gas responsive drug delivery carriers for biomedical applications

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Asian Journal of Pharmaceutical Sciences 2024年第1期19卷 1-17页

作者： Jiafeng Zou Zeting Yuan Xiaojie chen You chen min Yao yang chen xiang li Yi chen Wenxing Ding Chuanhe Xia Yuzheng zhao Feng Gao Shanghai Frontier Science Research Base of Optogenetic Techniques for Cell Metabolism School of PharmacyEast China University of Science and TechnologyShanghai 200237China Key Laboratory of Neuropharmacology and Translational Medicine of Zhejiang Province School of Pharmaceutical SciencesZhejiang Chinese Medical UniversityHangzhou 310053China Shanghai Key Laboratory of Functional Materials Chemistry East China University of Science and TechnologyShanghai 200237China Shanghai Key Laboratory of New Drug Design School of PharmacyEast China University of Science and TechnologyShanghai 200237China Optogenetics and Synthetic Biology Interdisciplinary Research Center State Key Laboratory of Bioreactor EngineeringEast China University of Science and TechnologyShanghai 200237China CAS Center for Excellence in Brain Science Shanghai Institutes for Biological SciencesChinese Academy of SciencesShanghai 200031China Research Unit of New Techniques for live-cell Metabolic Imaging Chinese Academy of Medical SciencesBeijing 100050China

Hydrogen sulfide(H_(2)S)is a toxic,essential gas used in various biological and physical processes and has been the subject of many targeted studies on its role as a new gas *** studies have mainly focused on the production and pharmacological side effects caused by H_(2)***,effective strategies to remove H_(2)S has become a key research ***,the development of novel nanoplatforms has provided new tools for the targeted removal of H_(2)*** paper was performed to review the association between H_(2)S anddisease,relatedH_(2)S inhibitory drugs,aswell as H_(2)S responsive nanoplatforms(HRNs).This review first analyzed the role of H_(2)S in multiple tissues and ***,common drugs used to eliminate H_(2)S,as well as their potential for combination with anticancer agents,were *** only the existing studies on HRNs,but also the inhibition H_(2)S combined with different therapeutic methods were both sorted out in this ***,this review provided in-depth analysis of the potential of HRNs about treatment or detection in ***,potential challenges of HRNs were *** study demonstrates the excellent potential of HRNs for biomedical applications.

关键词： Hydrogen sulfide Disease mechanisms Removal of hydrogen sulfide Responsive nanoplatforms Challenges Biomedical applications

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