检索结果-南通市图书馆

FPGA-based high resolution DPWM control circuit

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Engineering and Electronics 2018年第6期29卷 1136-1141页

作者： SONG hu JIANG Naiti hu shanshan LI Hongtao School of Electronic and Optical Engineering Nanjing University of Science and TechnologyNanjing 210094China Nanjing Marine Radar Institute Nanjing 210003China

Two improved structures of high resolution digital pulse width modulator(DPWM) control circuit are proposed. Embedded digital clock manager(DCM) blocks and digital programmable delay circuits are employed as the basic resources to construct the field-programmable gate array(FPGA)-based DPWM implementations. Detailed schemes are illustrated and the circuits have been successfully implemented on the Artix-7 FPGA device developed by Xilinx. Experimental results show that when the basic clock operates at the frequency of 200 MHz, the resolutions of the two approaches can reach 625 ps and 500 ps, respectively. Besides,the presented schemes possess other merits including flexible resolution, strong versatility and relatively good stability.

关键词： digital clock manager(DCM) digital programmable delay circuit digital pulse width modulator(DPWM)

Enhanced damping capacity of ferromagnetic Fe-Ga alloys by introducing structural defects

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2021年第25期84卷 173-181页

作者： Ruihua Qiao Junming Gou Tianzi Yang Yiqun Zhang Feng Liu shanshan hu Tianyu Ma Frontier Institute of Science and Technology State Key Laboratory for Mechanical Behavior of Materialsand MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed MatterXi’an Jiaotong UniversityXi’an710049China State Key Laboratory of Solidification Processing and Analytical&Testing Center Northwestern Polytechnical UniversityXi'an710072China School of Materials Science and Engineering Zhejiang UniversityHangzhou310027China

The irreversible motion of magnetic domain walls in ferromagnets can dissipate a large portion of the elastic energy,and the associated damping capacity is proportional to the magnetostriction *** contrast,here we found that the damping capacity of the large magnetostriction Fe-Ga alloys can be enhanced by 2-3 times through introducing structural defects including interfacial dislocations and stacking faults,despite that these defects deteriorate the *** structural defects were introduced by aging the BCC(body-centered-cubic)solution-treated precursor,for which the formation of mechanically harder FCT(face-centered-tetragonal)and/or FCC(face-centered-cubic)phases can result in high-density partial dislocations at the semi-coherent phase interfaces and quasi-periodically stacked nano-layer substructure inside the FCC *** structural defects act as extra damping sources besides the magnetic domain walls because the structural accommodation of the semi-coherent phase interfaces between BCC and FCT/FCC nanoprecipitates with different elastic moduli and the nano-layer substructure towards long-range ordered periodical stacking can dissipate a large portion of mechanical *** findings suggest that introducing structural defects provides fresh freedom to design high damping ferromagnetic materials.

关键词： Ferromagnets Damping capacity Defects Magnetostriction Fe-Ga alloy

Metamaterials:From fundamental physics to intelligent design

在线全文

学校读者我要写书评

暂无评论

Interdisciplinary Materials 2023年第1期2卷 5-29页

作者： Ji Chen shanshan hu Shining Zhu Tao Li National Laboratory of Solid State Microstructures Key Laboratory of Intelligent Optical Sensing and ManipulationsJiangsu Key Laboratory of Artificial Functional MaterialsCollege of Engineering and Applied SciencesSchool of PhysicsNanjing UniversityNanjingChina National Mobile Communications Research Laboratory School of Information Science and EngineeringFrontiers Science Center for Mobile Information Communication and SecuritySoutheast UniversityNanjingChina

Metamaterials are artificial structures with the ability to efficiently control light-field,attracting intensive attention in the past few *** have studied the working principles,design strategies,and fabrication methods of metamaterials,making this field cross and combine with many disciplines,including physics,material science,electronics,and *** recent years,with the rapid development of high-efficiency and multifunctional metasurfaces,which are a two-dimensional version of metamaterials,great efforts have been made to push this material to practical *** particular,the introduction of artificial intelligent(AI)algorithms enables metamaterials-based photonic devices that exhibit excellent performances and intelligent *** this review,we first introduce the basic concepts,working principles,design methods,and applications of metamaterials,and then focus on the rapidly developing metamaterials research combined with AI ***,we conclude this review with personal perspectives on the current problems and future directions of metamaterials research and developments.

关键词： artificial intelligence artificial neural network inverse design metamaterial metasurface

Identification of ferroptosis-associated tumor antigens as the potential targets to prevent head and neck squamous cell carcinoma

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Genes & Diseases 2024年第6期11卷 482-494页

作者： Qiming Zhai Zhiwei Wang Han Tang shanshan hu Meihua Chen Ping Ji Stomatological Hospital of Chongqing Medical University Chongqing Key Laboratory of Oral Diseases and Biomedical SciencesChongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqing 401147China Department of Orthodontics School of StomatologyFourth Military Medical UniversityXi'anShaanxi 710032China Sichuan Cancer Hospital&Institute Sichuan Cancer CenterSchool of MedicineUniversity of Electronic Science and Technology of ChinaRadiation Oncology Key Laboratory of Sichuan ProvinceChengduSichuan 610041China

Head and neck squamous cell carcinoma(HNSC)represents nearly 90%of all head and neck *** current treatment modality for HNSC patients primarily involves surgical intervention and radiotherapy,but its therapeutic efficacy remains *** mRNA vaccine based on tumor antigens seems promising for cancer ***,a novel form of cell death,is linked to tumor progression and cancer ***,the effectiveness of ferroptosis-associated tumor antigens in treating HNSC remains *** this study,we identified three ferroptosis-associated tumor antigens,namely caveolin1(CAV1),ferritin heavy chain(FTH1),and solute carrier 3A2(SLC3A2),as being overexpressed and mutated based on data obtained from The Cancer Genome Atlas and Gene Expression Omnibus *** antigens were strongly associated with poor prognosis and infiltration of antigen-presenting cells in *** further identified two ferroptosis subtypes(FS1 and FS2)with distinct molecular,cellular,and clinical properties to identify antigen-sensitive *** findings indicate that FS1 exhibits an immune“hot”phenotype,whereas FS2 displays an immune“cold”***,differential expression of immunogenic cell death modulators and immune checkpoints was observed between these two immune *** exploration of the HNSC's immune landscape revealed significant heterogeneity among individual *** findings suggest that CAV1,FTH1,and SLC3A2 are potential targets to prevent HNSC in FS2 ***,our research reveals the potential of ferroptosis-associated mRNA vaccines for HNSC and identifies an effective patient population for vaccine treatment.

关键词： Ferroptosis Ferroptosis subtypes Head and neck squamous cell carcinoma Immunotherapy Tumorantigens

Diabetic ketoacidosis complicated with intussusception: a case report

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Emergency Medicine 2024年第5期15卷 419-421页

作者： Qin huang Xiang Peng shanshan hu Xinyu Tan Xiangmin Li Department of Emergency Medicine Xiangya HospitalCentral South UniversityChangsha 410008China National Clinical Research Center for Geriatric Disorders(Xiangya Hospital) Changsha 410008China

Intussusception is relatively rare in adults but common in children.[1,2]An untreated intussusception often causes intestinal obstruction,intestinal perforation,peritonitis,and shock.[3]Diabetic ketoacidosis(DKA)is the most common acute hyperglycemic emergency in uncontrolled type 1 diabetes(T1DM).[4]More than 60%of DKA patients experience gastrointestinal symptoms such as nausea,vomiting,and abdominal pain,[5,6]which sometimes lead to the neglect of other serious underlying *** delayed gastric emptying,intestinal obstruction,electrolyte imbalance,and metabolic acidosis are associated with DKA,the underlying mechanism has not been fully elucidated.[7]This study aimed to report a DKA patient complicated with intussusception.

关键词： Diabetic obstruction acute

Co-regulation of mitochondrial and chloroplast function: Molecular components and mechanisms

在线全文

学校读者我要写书评

暂无评论

Plant Communications 2023年第1期4卷 238-249页

作者： Cunman He Oliver Berkowitz shanshan hu Yang Zhao Kun Qian huixia Shou James Whelan Yan Wang College of Life Science Zhejiang UniversityHangzhouZhejiang 310058P.R.China Department of Animal Plant and Soil ScienceSchool of AgricultureBiomedical and Environmental SciencesLa Trobe UniversityBundooraVIC 3086Australia International Science and Technology Cooperation Base on Engineering Biology International Campus of Zhejiang UniversityHainingZhejiang 314400P.R.China

The metabolic interdependence,interactions,and coordination of functions between chloroplasts and mitochondria are established and intensively ***,less is known about the regulatory components that control these interactions and their responses to external ***,we outline how chloroplastic and mitochondrial activities are coordinated via common components involved in signal transduction pathways,gene regulatory events,and post-transcriptional *** endoplasmic reticulum emerges as a point of convergence for both transcriptional and post-transcriptional pathways that coordinate chloroplast and mitochondrial *** the identification of molecular components and mechanisms of chloroplast and mitochondrial signaling increasingly suggests common players,this raises the question of how these allow for distinct organelle-specific downstream *** questions with respect to the regulation of post-transcriptional pathways and the cell and/or tissue specificity of organelle signaling are crucial for understanding how these pathways are integrated at a wholeplant level to optimize plant growth and its response to changing environmental conditions.

关键词： mitochondria chloroplast co-regulation

Research on Electronic Forensics Based on Blockchain Technology

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Electronic Research and Application 2024年第6期8卷 176-181页

作者： shanshan hu College of Information Engineering Tarim UniversityAlaer 843300China

The development of high technology,for public life to provide a justification at the same time,also encouraged the spirit of cybercrime,to become more and more *** network crime,electronic data is usually used as the main evidence to determine the facts of the crime and plays an important role in the smooth trial of the *** because electronic data on dependent,concealment,easy destructive strong science and technology,the forensics work is now in *** mature use of blockchain technology can avoid existing problems to a certain extent,which is helpful to the smooth progress of electronic *** paper on electronic evidence how to more effectively,combined with research blockchain technology,improve the efficiency of electronic evidence collection work.

关键词： Blockchain Electronic forensics Significance Existence problem Countermeasures

Micro or nano:Evaluation of biosafety and biopotency of magnesium metal organic framework-74 with different particle sizes

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2020年第2期13卷 511-526页

作者： Zhou Zhu Shaokang Jiang Yanhua Liu Xiaomeng Gao shanshan hu Xin Zhang Chao huang Qianbing Wan Jian Wang Xibo Pei State Key Laboratory of Oral Diseases National Clinical Research Center for Oral DiseasesDepartment of ProsthodonticsWest China Hospital of StomatologSichuan UniversityChengdu 610041China College of Chemistry Sichuan UniversityChengdu 610064China

In recent years,various particulate materials have played important roles in medical ***,nano-and micron-sized particles of the same material could exhibit distinct properties due to different particle *** finding provided a simple and effective way to improve the biological applications of particulate ***,as a highly promising member,the effect of the particle size change of the magnesium metal organic framework-74(Mg-MOF74)was well worth *** we firsth assessed the in vitro and in vivo toxicity of micron/nanoscale Mg-MOF74(m-Mg-MOF74/n-Mg-MOF74)in *** in vitro study revealed that compared to micron-sized subjects,n-Mg-MOF74 provided a wider range of safe ***,both micron/nanoscale Mg-MOF74 showed good biocompatibility and allowed all the rats under the treatment to survive through the expected experimental periods,with n-Mg-MOF74 still showing lower *** advantages of nanoscale Mg-MOF74might benefit from its sustainable and balanced release of Ma^2+both inside and outside the *** on the biosafety evaluation,advanced bio-functional assessments of m/n-Mg-MOF74 including early osteogenesis and angiogenesis were ***,the suitable dose groups of n-Mg-MOF74 achieved optimal early osteogenic promotion and angiogenic stimulation ***,our combined data delineated the toxicity and biological behaviors of Ma-MOF74 of different scales,and sugqested nanoscale Mg-MOF74 as a better choice for future *** result revealed that particle size reductior might be a viable strategy to improve and expand medical applications of MOFs or other particulate materials.

关键词： magnesium metal organic framework-74 micron/nanoscale biological applications osteogenesis angiogenesis

Venoarterial extracorporeal membrane oxygenation for refractory cardiogenic shock induced by adrenal lesions:a case report and review of the literature

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Emergency Medicine 2023年第4期14卷 325-328页

作者： Liping Zhou Xiaoye Mo Guoqing huang Ping Wu Changshou She shanshan hu Ben Liu Zhen Zhao Ning Yang Department of Emergency Medicine Xiangya HospitalCentral South UniversityChangsha 410008China

The adrenal gland secretes a variety of hormones that regulate physiological functions,and adrenal lesions can lead to insidious or sudden onset diseases that are easily ***,several young patients with unknown sudden and refractory cardiogenic shock or cardiac arrest(CA)were successfully treated in our emergency department by the application of venoarterial extracorporeal membrane oxygenation(VA-ECMO).These life-threatening conditions were finally determined to be caused by adrenal lesions,which highlight the bridging role of VA-ECMO.[1]

关键词： adrenal lesions arterial