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Unraveling the biological link between diabetes mellitus and prostate cancer:Insights and implications
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作者 Jian Li Zhi-Peng Li +1 位作者 Si-Si Xu Wei Wang 《World Journal of Diabetes》 SCIE 2024年第6期1367-1373,共7页
This article is a comprehensive study based on research on the connection between diabetes mellitus(DM)and prostate cancer(PCa).It investigates the potential role of DM as an independent risk factor for PCa,delving in... This article is a comprehensive study based on research on the connection between diabetes mellitus(DM)and prostate cancer(PCa).It investigates the potential role of DM as an independent risk factor for PCa,delving into the biological links,including insulin resistance and hormonal changes.The paper critically analyzes previous studies that have shown varying results and introduces mendelian randomization as a method for establishing causality.It emphasizes the importance of early DM screening and lifestyle modifications in preventing PCa,and proposes future research directions for further understanding the DM-PCa relationship. 展开更多
关键词 biological mechanisms Diabetes mellitus Mendelian randomization Prevention prostatic cancer Treatment
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Classification of musical hallucinations and the characters along with neural-molecular mechanisms of musical hallucinations associated with psychiatric disorders
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作者 Xin Lian Wei Song +1 位作者 Tian-Mei Si Naomi Zheng Lian 《World Journal of Psychiatry》 SCIE 2024年第9期1386-1396,共11页
BACKGROUND Musical hallucinations(MH)involve the false perception of music in the absence of external stimuli which links with different etiologies.The pathomechanisms of MH encompass various conditions.The etiologica... BACKGROUND Musical hallucinations(MH)involve the false perception of music in the absence of external stimuli which links with different etiologies.The pathomechanisms of MH encompass various conditions.The etiological classification of MH is of particular importance and offers valuable insights to understand MH,and further to develop the effective treatment of MH.Over the recent decades,more MH cases have been reported,revealing newly identified medical and psychiatric causes of MH.Functional imaging studies reveal that MH activates a wide array of brain regions.An up-to-date analysis on MH,especially on MH comorbid psychiatric conditions is warranted.AIM To propose a new classification of MH;to study the age and gender differences of MH in mental disorders;and neuropathology of MH.METHODS Literatures searches were conducted using keywords such as“music hallucination,”“music hallucination and mental illness,”“music hallucination and gender difference,”and“music hallucination and psychiatric disease”in the databases of PubMed,Google Scholar,and Web of Science.MH cases were collected and categorized based on their etiologies.The t-test and ANOVA were employed(P<0.05)to compare the age differences of MH different etiological groups.Function neuroimaging studies of neural networks regulating MH and their possible molecular mechanisms were discussed.RESULTS Among the 357 yielded publications,294 MH cases were collected.The average age of MH cases was 67.9 years,with a predominance of females(66.8%females vs 33.2%males).MH was classified into eight groups based on their etiological mechanisms.Statistical analysis of MH cases indicates varying associations with psychiatric diagnoses.CONCLUSION We carried out a more comprehensive review of MH studies.For the first time according to our knowledge,we demonstrated the psychiatric conditions linked and/or associated with MH from statistical,biological and molecular point of view. 展开更多
关键词 PATHOMECHANISM Etiological factors CLASSIFICATION Gender difference Neuropathway Psychotic musical hallucination and non-psychotic musical hallucination Neuropathway biological and molecular mechanism
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Intended process water management concept for the mechanical biological treatment of municipal solid waste
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作者 D. Weichgrebe S. Maerker +1 位作者 T. Bning H. Stegemann 《Water Science and Engineering》 EI CAS 2008年第1期78-88,共11页
Accumulating operational experience in both aerobic and anaerobic mechanical biological waste treatment (MBT) makes it increasingly obvious that controlled water management would substantially reduce the cost of MBT... Accumulating operational experience in both aerobic and anaerobic mechanical biological waste treatment (MBT) makes it increasingly obvious that controlled water management would substantially reduce the cost of MBT and also enhance resource recovery of the organic and inorganic fraction. The MBT plant at Gescher, Germany, is used as an example in order to determine the quantity and composition of process water and leachates from intensive and subsequent rotting, pressing water from anaerobic digestion and scrubber water from acid exhaust air treatment, and hence prepare an MBT water balance. The potential of, requirements for and limits to internal process water reuse as well as the possibilities of resource recovery from scrubber water are also examined. Finally, an assimilated process water management concept with the purpose of an extensive reduction of wastewater quantity and freshwater demand is presented. 展开更多
关键词 mechanical biological waste treatment process water municipal solid waste exhaust airtreatment intensive tunnel rotting
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Exploring the molecular biological mechanism of Shugan Jianpi Decoction in the treatment of depression-related breast cancer based on network pharmacology
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作者 Jing-Yuan Wu Bo-Wen Xu +3 位作者 Jie Li Wei-Lu Cui Tai-Cheng Lu Lu-Chang Cao 《Journal of Hainan Medical University》 2022年第10期42-48,共7页
Objective:To explore the molecular biological mechanism of Shugan Jianpi Decoction in treating depression-related breast cancer based on network pharmacology.Methods:The active compounds of Shugan Jianpi Decoction wer... Objective:To explore the molecular biological mechanism of Shugan Jianpi Decoction in treating depression-related breast cancer based on network pharmacology.Methods:The active compounds of Shugan Jianpi Decoction were explored to obtain their drug targets,and the venny network,"TCM-component-target"network,PPI network,"pathway-gene"network,GO and KEGG enrichment results were constructed using relevant softwares.Results:A total of 121 active ingredients,250 genes,2357 GO functions and 184 KEGG pathways were obtained.Conclusion:The active ingredients of Shugan Jianpi Decoction are quercetinll、kaempferol、luteolin、naringenin.The key targets are MAPK1,MAPK3,RELA,and AKT1.GO functions include cellular response to hormone stimulus、cellular response to lipid、cellular response to oxidative stress and so on.KEGG mainly involves PI3K-Akt,microRNAs,and FoxO signaling pathways.This study preliminarily explores the molecular biological mechanism of Shugan Jianpi Decoction in the treatment of depression-related breast cancer,and speculates that it mainly acts by arresting the cell cycle,inhibiting cancer cell proliferation,mediating cancer cell apoptosis,and preventing its recurrence and metastasis,which provides new evidence and new direction for subsequent clinical application and experimental research. 展开更多
关键词 Shugan Jianpi Decoction Depression-related breast cancer Network pharmacology Molecular biological mechanism
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Additive manufacturing of biodegradable magnesium-based materials:Design strategies,properties,and biomedical applications 被引量:2
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作者 Farzad Badkoobeh Hossein Mostaan +3 位作者 Mahdi Rafiei Hamid Reza Bakhsheshi-Rad Seeram Rama Krishna Xiongbiao Chen 《Journal of Magnesium and Alloys》 SCIE EI CAS CSCD 2023年第3期801-839,共39页
Magnesium(Mg)-based materials are a new generation of alloys with the exclusive ability to be biodegradable within the human/animal body.In addition to biodegradability,their inherent biocompatibility and similar-to-b... Magnesium(Mg)-based materials are a new generation of alloys with the exclusive ability to be biodegradable within the human/animal body.In addition to biodegradability,their inherent biocompatibility and similar-to-bone density make Mg-based alloys good candidates for fabricating surgical bioimplants for use in orthopedic and traumatology treatments.To this end,nowadays additive manufacturing(AM)along with three-dimensional(3D)printing represents a promising manufacturing technique as it allows for the integration of bioimplant design and manufacturing processes specific to given applications.Meanwhile,this technique also faces many new challenges associated with the properties of Mg-based alloys,including high chemical reactivity,potential for combustion,and low vaporization temperature.In this review article,various AM processes to fabricate biomedical implants from Mg-based alloys,along with their metallic microstructure,mechanical properties,biodegradability,biocompatibility,and antibacterial properties,as well as various post-AM treatments were critically reviewed.Also,the challenges and issues involved in AM processes from the perspectives of bioimplant design,properties,and applications were identified;the possibilities and potential scope of the Mg-based scaffolds/implants are discussed and highlighted. 展开更多
关键词 Magnesium alloy Additive manufacturing 3D Printing Bone tissue engineering SCAFFOLD Mechanical and biological properties
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Event-driven Dynamic and Intelligent Scheduling for Agile Manufacturing Based on Immune Mechanism and Expert System
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作者 李蓓智 杨建国 +1 位作者 周亚勤 邵世煌 《Journal of Donghua University(English Edition)》 EI CAS 2003年第3期5-10,共6页
Based on the biological immune concept, immune response mechanism and expert system, a dynamic and intelligent scheduling model toward the disturbance of the production such as machine fault,task insert and cancel etc... Based on the biological immune concept, immune response mechanism and expert system, a dynamic and intelligent scheduling model toward the disturbance of the production such as machine fault,task insert and cancel etc. Is proposed. The antibody generation method based on the sequence constraints and the coding rule of antibody for the machining procedure is also presented. Using the heuristic antibody generation method based on the physiology immune mechanism, the validity of the scheduling optimization is improved, and based on the immune and expert system under the event-driven constraints, not only Job-shop scheduling problem with multi-objective can be solved, but also the disturbance of the production be handled rapidly. A case of the job-shop scheduling is studied and dynamic optimal solutions with multi-objective function for agile manufacturing are obtained in this paper. And the event-driven dynamic rescheduling result is compared with right-shift rescheduling and total rescheduling. 展开更多
关键词 agile manufacturing dynamic and intelligent scheduling EVENT-DRIVEN biologic immune mechanism
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A Preliminary Study on Principle of Etiology Mechanism
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作者 Chen Nanhui 《Animal Husbandry and Feed Science》 CAS 2016年第3期155-158,共4页
Based on the inspiration from Hetu and Luoshu,a principle diagram of pathogenicity of pathogenic factors was established.Accordingly,the inner correlations between pathogenic factor type and biological factors,and bet... Based on the inspiration from Hetu and Luoshu,a principle diagram of pathogenicity of pathogenic factors was established.Accordingly,the inner correlations between pathogenic factor type and biological factors,and between pathogenic factors and host were analyzed.Mechanism of pathogenesis was discussed with five representative cases.The result indicated that effect of biological factors on host could be proved only with the performance of internalization conditions of biological factor and host.The reciprocal transformation between biological factors and pathogenic factors was decided by interaction and state of co-existed factors and host.The results suggested that it is a better and attractive choice to regulate and optimize the host’s state in practice than direct elimination of pathogens with antibiotics. 展开更多
关键词 Etiology mechanisms Diagram biological factors Pathogenic factors
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Water-lifting and aeration system improves water quality of drinking water reservoirs: Biological mechanism and field application
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作者 Liqing Kou Tinglin Huang +5 位作者 Haihan Zhang Kai Li Fengyao Hua Cheng Huang Xiang Liu Fan Si 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2023年第7期174-188,共15页
Reservoirs have been served as the major source of drinking water for dozens of years.The water quality safety of large andmedium reservoirs increasingly becomes the focus of public concern.Field test has proved that ... Reservoirs have been served as the major source of drinking water for dozens of years.The water quality safety of large andmedium reservoirs increasingly becomes the focus of public concern.Field test has proved that water-lifting and aeration system(WLAS)is a piece of effective equipment for in situ control and improvement of water quality.However,its intrinsic bioremediation mechanism,especially for nitrogen removal,still lacks in-depth investigation.Hence,the dynamic changes inwater quality parameters,carbon source metabolism,species compositions and co-occurrence patterns ofmicrobial communitieswere systematically studied in Jinpen Reservoir within a wholeWLAS running cycle.TheWLAS operation could efficiently reduce organic carbon(19.77%),nitrogen(21.55%)and phosphorus(65.60%),respectively.Biolog analysis revealed that the microbialmetabolic capacitieswere enhanced viaWLAS operation,especially in bottomwater.High-throughput sequencing demonstrated that WLAS operation altered the diversity and distributions of microbial communities in the source water.The most dominant genus accountable for aerobic denitrification was identified as Dechloromonas.Furthermore,network analysis revealed that microorganisms interacted more closely through WLAS operation.Oxidation-reduction potential(ORP)and total nitrogen(TN)were regarded as the two main physicochemical parameters influencing microbial community structures,as confirmed by redundancy analysis(RDA)and Mantel test.Overall,the results will provide a scientific basis and an effective way for strengthening the in-situ bioremediation of micro-polluted source water. 展开更多
关键词 Water-lifting and aeration system Drinking water reservoir Co-occurrence network biological mechanism
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Network Pharmacology-based Analysis on Determining the Mechanisms of Yishen Qutong Granules(益肾祛痛颗粒)in Alleviating Cancer-related Fatigue
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作者 LI Hao LIU Li-xing +3 位作者 CHANG Jin-yuan CHEN Jia-yang ZHANG Qing-lin FENG Li 《World Journal of Integrated Traditional and Western Medicine》 2022年第5期32-39,共8页
Cancer-related fatigue(CRF)is associated with cancer-related anemia(CRA).As the common comorbidities of cancer,both of them can seriously affect the quality of patient life.Yishen Qutong Granules(益肾祛痛颗粒,YSQTG)ha... Cancer-related fatigue(CRF)is associated with cancer-related anemia(CRA).As the common comorbidities of cancer,both of them can seriously affect the quality of patient life.Yishen Qutong Granules(益肾祛痛颗粒,YSQTG)have achieved good curative effects in the treatment of CRA.However,the mechanism of whether it can alleviate CRF needs further confirmation.We used network pharmacology and molecular docking to investigate the molecular mechanism and the effective compounds of the prescription.Through the analysis and research in this paper,we obtained 76 effective compounds and 76 drug-disease intersection targets to construct a network,indicating that quercetin,luteolin,baicalein,β-sitosterol and stigmasterol were possibly the most important compounds in YSQTG.The key targets of YSQTG for CRF were mainly enriched in IL-17 and TNF pathways.816 GO entries and 113 pathways were obtained by GO and KEGG enrichment,respectively,which proved that YSQTG might have a comprehensive therapeutic effect on CRF mainly through regulating IL-17,TNF,MAPK,NF-κB and chemokines,as well as cholinergic synapse and 5-HT synapse pathways.The results of molecular docking showed thatβ-sitosterol and stigmasterol could form PI-Alkyl or Alkyl hydrophobic interactions with CXCL8 and ESR1 at residues LEU25,ARG26,PHE65,ALA69 and LEU346,ALA350,LEU391,PHE404,LEU525,VAL533,respectively.In conclusion,the therapeutic effect of YSQTG on CRF is based on the comprehensive pharmacological effect of multicomponent,multitarget,and multichannel pathways.This study provides a theoretical basis for further experimental research. 展开更多
关键词 Yishen Qutong Granules Cancer-related fatigue biological mechanism Traditional Chinese Medicine HERB Network pharmacology
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Gallbladder polypoid lesions:Current practices and future prospects
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作者 Kun Wang Qingpeng Xu +5 位作者 Lu Xia Jianing Sun Kanger Shen Haoran Liu Linning Xu Rui Li 《Chinese Medical Journal》 SCIE CAS CSCD 2024年第14期1674-1683,共10页
Gallbladder polypoid lesions(GPLs)refer to any elevated lesion of the mucosal surface of the gallbladder wall,and the prevalence is estimated to be between 0.9%and 12.1%.GPLs include benign polyps and malignant polyps... Gallbladder polypoid lesions(GPLs)refer to any elevated lesion of the mucosal surface of the gallbladder wall,and the prevalence is estimated to be between 0.9%and 12.1%.GPLs include benign polyps and malignant polyps.Benign polyps are further classified as non-neoplastic polyps and neoplastic polyps.Cholesterol polyps are the most common benign polyps and adenocarcinoma is the main type of malignant polyp.Hepatitis B virus infection,liver function abnormalities,dyslipidemia,and obesity are the main risk factors for GPLs.Studies of biological mechanisms have focused on malignant gallbladder polyps,the development of which is regulated by hormone levels in vivo,gut microbiota,inflammation,oxidative stress,Salmonella typhimurium,and related molecules.Diagnostic modalities include chemical examination and imaging examination,with imaging examination currently being the mainstay.Treatment of patients with GPLs is based on the presence or absence of symptoms,age,size of the polyps,tendency of the polyp to increase,and risk factors for symptomatic malignancy to determine whether surgery should be performed. 展开更多
关键词 Gallbladder neoplasms Benign polyps Malignant polyps Risk factors biological mechanism DIAGNOSIS Treatment
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Biomechanics of Musculoskeletal System and Its Biomimetic Implications: A Review 被引量:7
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作者 Lei Ren Zhihui Qian Luquan Ren 《Journal of Bionic Engineering》 SCIE EI CSCD 2014年第2期159-175,共17页
Biological musculoskeletal system (MSK), composed of numerous bones, cartilages, skeletal muscles, tendons, ligaments etc., provides form, support, movement and stability for human or animal body. As the result of m... Biological musculoskeletal system (MSK), composed of numerous bones, cartilages, skeletal muscles, tendons, ligaments etc., provides form, support, movement and stability for human or animal body. As the result of million years of selection and evolution, the biological MSK evolves to be a nearly perfect mechanical mechanism to support and transport the human or animal body, and would provide enormously rich resources to inspire engineers to innovate new technology and methodology to develop robots and mechanisms as effective and economical as the biological systems. This paper provides a general review of the current status of musculoskeletal biomechanics studies using both experimental and computational methods. This includes the use of the latest three-dimensional motion analysis systems, various medical imaging modalities, and also the advanced rigid-body and continuum mechanics musculoskeletal modelling techniques. Afterwards, several representative biomimetic studies based on ideas and concepts inspired from the structures and biomechanical functions of the biological MSK are dis- cussed. Finally, the major challenges and also the future research directions in musculoskeletal biomechanics and its biomimetic studies are proposed. 展开更多
关键词 musculoskeletal system BIOmechanics MULTI-SCALE biomimetics biologically inspired robots and mechanisms
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Preparation,Mechanical and Biological Properties of Inkjet Printed Alginate/Gelatin Hydrogel 被引量:2
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作者 Tian Jiao Qin Lian +2 位作者 Tingze Zhao Huichao Wang Dichen Li 《Journal of Bionic Engineering》 SCIE EI CSCD 2021年第3期574-583,共10页
3D printing has made remarkable progress in soft tissue reconstruction enabling the custom design of complex material implants with patient specific geometry.The aim of this study was to inkjet print mechanically rein... 3D printing has made remarkable progress in soft tissue reconstruction enabling the custom design of complex material implants with patient specific geometry.The aim of this study was to inkjet print mechanically reinforced biocompatible hydrogels.Here,we developed a double crosslinked ink by optimizing the rheological properties of solutions of sodium alginate(NaAlg),NaAlg/transglutaminase(TG),CaCl_(2)and gelatin/CaCl_(2).The results showed that a two-component ink system comprising NaAlg(4%w/v)/TG(0.8%w/v)and gelatin(4%w/v)/CaCl_(2)(3%w/v)gave optimum printability.The mechanical and biological properties of printed alginate/gelatin hydrogels prepared from inks with different gelatin contents,and incorporated fibroblasts,were characterized by Scanning Electron Microscope(SEM),mechanical testing and laser confocal microscopy.The compressive moduli of alginate/gelatin hydrogels could be adjusted from 19.2 kPa±1.2 kPa to 65.9 kPa±3.3 kPa by increasing the content of gelatin.After incubation for 7 d,fibroblasts had permeated all printed hydrogels and the rate of proliferation increased with increasing gelatin content.The highest cell proliferation rate(497%)was obtained in a hydrogel containing 4.5%(w/v)gelatin.This study offers a new strategy for the fabrication of 3D structures used to mimic the function of native tissues. 展开更多
关键词 BIOFABRICATION inkjet printing double crosslinking ink mechanical and biological properties hydrogel preparation
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Biological effect and molecular mechanism study of biomaterials based on proteomic research 被引量:1
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作者 Zhen Zhen Yufeng Zheng +2 位作者 Zigang Ge Chen Lai Tingfei Xi 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2017年第7期607-615,共9页
Along with the role transformation of biomaterials from bioinert substitute to regenerative inducer, the biological effect and mechanism of material-organism interaction become more important. Since most of animal tes... Along with the role transformation of biomaterials from bioinert substitute to regenerative inducer, the biological effect and mechanism of material-organism interaction become more important. Since most of animal tests and cellular experiments stay on the phenomenon description instead of mechanism interpretation, the development of proteomics technologies provides a golden opportunity to uncover the molecular interaction mechanism between biomaterial-organism on whole scale. This review summarizes current application of proteomics in biological effect and mechanism study of biomaterials, and discusses the development and challenges for future studies. 展开更多
关键词 Proteomics Biomaterials biological effect Molecular mechanism
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Effect of loading rate on shear strength parameters of mechanically and biologically treated waste
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作者 Guoyang Fan Zhenying Zhang +5 位作者 Jiahe Zhang Jiayue Zhang Qiaona Wang Min Wang Bang Wang Chengyu Nie 《Frontiers of Environmental Science & Engineering》 SCIE EI CSCD 2022年第12期121-132,共12页
Mechanical biological treatment(MBT)technology has attracted increasing attention because it can reduce the volume of waste produced.To deal with the current trend of increasing waste,MBT practices are being adopted t... Mechanical biological treatment(MBT)technology has attracted increasing attention because it can reduce the volume of waste produced.To deal with the current trend of increasing waste,MBT practices are being adopted to address waste generated in developing urban societies.In this study,a total of 20 specimens of consolidated undrained triaxial tests were conducted on waste obtained from the Hangzhou Tianziling landfill,China,to evaluate the effect of loading rate on the shear strength parameters of MBT waste.The MBT waste samples exhibited an evident strain-hardening behavior,and no peak was observed even when the axial strain exceeded 25%.Further,the shear strength increased with an increase in the loading rate;the effect of loading rate on shear strength under a low confining pressure was greater than that under a high confining pressure.Furthermore,the shear strength parameters of MBT waste were related to the loading rate.The relationship between the cohesion,internal friction angle,and logarithm of the loading rate could be fitted to a linear relationship,which was established in this study.Finally,the ranges of shear strength parameters cohesion c and effective cohesion c′were determined as 1.0–8.2 kPa and 2.1–14.9 kPa,respectively;the ranges of the internal friction angleφand effective internal friction angleφ’were determined as 16.2°–29°and 19.8°–43.9°,respectively.These results could be used as a valuable reference for conducting stability analyses of MBT landfills. 展开更多
关键词 Mechanically and biologically treated waste LANDFILL Triaxial test Loading rate Axial strain Shear strength parameter
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Analyzing and modeling rheological behavior of liver fibrosis in rats using shear viscoelastic moduli
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作者 Ying ZHU Yi ZHENG +6 位作者 Yuan-yuan SHEN Xin CHEN Xin-yu ZHANG Hao-ming LIN Yan-rong GUO Tian-fu WANG Si-ping CHEN 《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》 SCIE CAS CSCD 2014年第4期375-381,共7页
The process of liver fibrosis changes the rheological properties of liver tissue.This study characterizes and compares liver fibrosis stages from F0 to F4 in rats in terms of shear viscoelastic moduli.Here two viscoel... The process of liver fibrosis changes the rheological properties of liver tissue.This study characterizes and compares liver fibrosis stages from F0 to F4 in rats in terms of shear viscoelastic moduli.Here two viscoelastic models,the Zener model and Voigt model,were applied to experimental data of rheometer tests and then values of elasticity and viscosity were estimated for each fibrosis stage.The results demonstrate that moderate fibrosis(≤F2) has a good correlation with liver viscoelasticity.The mean Zener elasticity E1 increases from(0.452±0.094) kPa(F0) to(1.311±0.717) kPa(F2),while the mean Voigt elasticity E increases from(0.618±0.089) kPa(F0) to(1.701±0.844) kPa(F2).The mean Zener viscosity increases from(3.499±0.186) Pa·s(F0) to(4.947±1.811) Pa·s(F2) and the mean Voigt viscosity increases from(3.379±0.316) Pa·s(F0) to(4.625±1.296) Pa·s(F2).Compared with viscosity,the elasticity shows smaller variations at stages F1 and F2 no matter what viscoelastic model is used.Therefore,the estimated elasticity is more effective than viscosity for differentiating the fibrosis stages from F0 to F2. 展开更多
关键词 biological mechanics Rheological properties Liver fibrosis VISCOELASTICITY Shear modulus ELASTICITY VISCOSITY Zener model Voigt model
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Aerodynamic Performance of the Locust Wing in Gliding Mode at Low Reynolds Number 被引量:6
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作者 Jinwu Xiang Jianxun Du +1 位作者 Daochun Li Kai Liu 《Journal of Bionic Engineering》 SCIE EI CSCD 2016年第2期249-260,共12页
Gliding is an important flight mode for insects because it saves energy during long distance flight without wing flapping. In this study, we investigated the influence of locust wing corrugation on the aerodynamic per... Gliding is an important flight mode for insects because it saves energy during long distance flight without wing flapping. In this study, we investigated the influence of locust wing corrugation on the aerodynamic performance in gliding mode at low Reynolds number. Numerical simulations using two-dimensional Navier-Stokes equations are applied to study the gliding flight, which reveals the interaction between forewing and hindwing. The lift of the corrugated airfoil in a locust wing decreases from the wing root to the tip. Simulation results show that the pressure drags on the forewing and hindwing increase with an increase in wing thickness; while the lift-drag ratio of the airfoil is marginally affected by the corrugation on the airfoil. Geometric parameters analysis of the locust wing is also carried out, which includes the corrugation height, the corrugation placement and the shapes of leading and trailing edges. 展开更多
关键词 biological fluid mechanics corrugated gliding flight lift and drag coefficient locust wing low Reynolds number
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Top-geoherbs of traditional Chinese medicine:common traits,quality characteristics and formation 被引量:3
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作者 Luqi Huang Lanping Guo +2 位作者 Chaoyi Ma Wei Gao Qingjun Yuan 《Frontiers of Medicine》 SCIE CSCD 2011年第2期185-194,共10页
Top-geoherbs used in China are always featured with high qualities,and they grow in specified areas with specific environment.Recently,researches on top-geoherbs have attracted increasing attention in China and other ... Top-geoherbs used in China are always featured with high qualities,and they grow in specified areas with specific environment.Recently,researches on top-geoherbs have attracted increasing attention in China and other countries.In order to have a thorough knowledge of top-geoherbs,this article reviews the concept,historical evolution,common trait and quality characteristics of top-geoherbs,and explains the forming mechanism including genetic mechanism and environmental mechanism.In addition,it introduces the influence of human factors on the quality of top-geoherbs.Finally,it proposes some problems that should be paid attention to in the researches on top-geoherbs. 展开更多
关键词 top-geoherbs common traits quality characteristics FORMATION biological mechanism
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The multiple mechanisms of tripterygium wilfordii-induced acute kidney injury based on network pharmacology and molecular docking 被引量:2
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作者 Cheng Li Yuhua Zhu +5 位作者 Xiaomin Sun Jing Xu Dan Xiong Juan Wang Xinlu Gao Xulong Chen 《Journal of Chinese Pharmaceutical Sciences》 CAS CSCD 2021年第7期556-569,共14页
Acute kidney injury(AKI)is a common and serious health issue with a growing incidence and mortality rate.Tripterygium wilfordii(TW)is a traditional Chinese medicine that has been reported to cause kidney damage.Howeve... Acute kidney injury(AKI)is a common and serious health issue with a growing incidence and mortality rate.Tripterygium wilfordii(TW)is a traditional Chinese medicine that has been reported to cause kidney damage.However,the associated mechanism of TW-induced AKI remains unclear.Therefore,we aimed to uncover the associated mechanisms of AKI induced by TW using network pharmacology and bioinformatics.The candidate compounds of TW and the potential targets were screened using TCMSP and CTD database,and the AKI-related targets were identified from the Dis Ge NET database.The disease targets were intersected with the drug targets,and the Wayne diagram was drawn by Venny 2.1.0 software.We developed proteinprotein interactions(PPI)network and the“disease-compound-target-pathway”network through the Cytoscape software.By using the DAVID database,GO and KEGG enrichment analysis was carried out to reveal the potential signaling pathways of the compound-TW-induced AKI.Meanwhile,the Auto dock vina 1.1.2 was used for molecular docking to verify the active compound and key targets’binding ability.Critical compounds and key targets of TW-induced AKI were identified,including triptolide,kaempferol,β-sitosterol,nobiletin,stigmasterol,TNF,and so on.The GO analysis showed that potential genes’biological function was mainly involved in apoptosis,oxidative stress,and inflammation.Moreover,eight signaling pathways were found,including the HIF-1 signaling pathway,VEGF signaling pathway,apoptosis,and so on.The molecular docking results proved that the core compound’s affinity with the corresponding protein of the gene targets was good.This study preliminarily predicted the core toxic compounds,targets,and related pathways of TW-induced AKI,providing a theoretical basis for the follow-up clinical rational drug use and related research work of TW. 展开更多
关键词 Tripterygium wilfordii Acute renal injury biological mechanism Network pharmacology Molecular docking
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Snake-Hot-Eye-Assisted Multi-Process-Fusion Target Tracking Based on a Roll-Pitch Semi-strapdown Infrared Imaging Seeker 被引量:2
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作者 Jian Chen Zichao Zhang +2 位作者 Ke Yi Yu Han Zhang Ren 《Journal of Bionic Engineering》 SCIE EI CSCD 2022年第4期1124-1139,共16页
Aiming at intercepting large maneuvering targets precisely,the guidance law of advanced self-seeking missiles requires not only inertial line-of-sight(LOS)angular rate but also target maneuvering acceleration.Moreover... Aiming at intercepting large maneuvering targets precisely,the guidance law of advanced self-seeking missiles requires not only inertial line-of-sight(LOS)angular rate but also target maneuvering acceleration.Moreover,the semi-strapdown stabilization platform has lost the ability to measure the inertial LOS angular rate directly,which needs to be extracted by numerical calculation.The differential operation commonly used in traditional methods can magnify the measurement error of the sensor,resulting in insufficient calculation accuracy of the line-of-sight angular rate.By analyzing the mathematical relationship between the missile-target relative motion and the angle tracking system,a multi-process-fusion integrated filter model of relative motion and angle tracking is presented.To overcome the defect that the infrared seeker cannot directly measure the missile-target distance,following the snake-hot-eye visual mechanism,a visual bionic imaging guidance method of estimating the missile-target relative distance from the infrared images is proposed to improve the observability of the filter model.Finally,target-tracking simulations verify that the estimation accuracy of target acceleration is improved by four times. 展开更多
关键词 Roll-pitch semi-strapdown Infrared imaging seeker Target tracking biological visual mechanism Snake hot eye Integrated filter
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