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Mechanical design of an ultra-light vertex detector prototype for CEPC

Radiation Detection Technology and Methods 2022年第2期6卷 159-169页

作者： Jinyu Fu Zhijun Liang Hao Zeng Gang Li Mingyi Dong Huamin Qu joao guimaraes da costa Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China State Key Laboratory of Particle Detection and Electronics.Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Beijing 100049China

Background The Circular Electron Positron Collider(CEPC)is a large international scientific facility proposed to study the Higgs boson in great *** requires state-of-the-art detectors,including extremely precise vertexing and tracking devices,such as a silicon vertex *** Silicon vertex detector with the precision required by the CEPC has never been built before and needs extensive research and *** paper describes the mechanical design of a vertex detector prototype being built to explore the required technologies and the major *** The exceptional high spatial resolution of the CEPC vertex detector is achievable only with a detector of extremely low mass to limit particle *** paper proposes a mechanical design for the vertex detector prototype,highlighting the choice of low-mass materials,the analysis of support structures,the solution of detector cooling issues,and the drafts of procedures for detector *** The ultra-light support of the ladder(a structural unit of the CEPC vertex detector prototype),which is mainly made of carbon fiber reinforced polymer composite,has been *** fabrication process has also been *** supporting and cooling method of the vertex detector prototype has been designed and chosen with results from finite element analysis and computational fluid dynamics *** assembly and installation schemes for the prototype have been developed,and the respective tooling has also been *** performance of the vertex detector prototype,using this low-mass mechanical structure,was demonstrated with fast simulation to closely meet the CEPC physics requirement.

关键词： CEPC Silicon detector Mechanical design Carbon fiber reinforced polymer

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Precision Higgs physics at the CEPC

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Chinese Physics C 2019年第4期43卷 5-44页

作者： Fenfen An Yu Bai Chunhui Chen Xin Chen Zhenxing Chen joao guimaraes da costa Zhenwei Cui Yaquan Fang Chengdong Fu Jun Gao Yanyan Gao Yuanning Gao Shaofeng Ge Jiayin Gu Fangyi Guo Jun Guo Tao Han Shuang Han Hongjian He Xianke He Xiaogang He Jifeng Hu Shih-Chieh Hsu Shan Jin Maoqiang Jing Susmita Jyotishmati Ryuta Kiuchi Chia-Ming Kuo Peizhu Lai Boyang Li Congqiao Li Gang Li Haifeng Li Liang Li Shu Li Tong Li Qiang Li Hao Liang Zhijun Liang Libo Liao Bo Liu Jianbei Liu Tao Liu Zhen Liu Xinchou Lou Lianliang Ma Bruce Mellado Xin Mo Mila Pandurovic Jianming Qian Zhuoni Qian Nikolaos Rompotis Manqi Ruan Alex Schuy Lianyou Shan Jingyuan Shi Xin Shi Shufang Su dayong Wang Jin Wang Liantao Wang Yifang Wang Yuqian Wei Yue Xu Haijun Yang Ying Yang Weiming Yao dan Yu Kaili Zhang Zhaoru Zhang Mingrui Zhao Xianghu Zhao Ning Zhou Institute of High Energy Physics Department of Physics and Astronomy Iowa State University Department of Physics Southeast University Department of Engineering Physics Physics Department Tsinghua University School of Physics Peking University University of Chinese Academy of Science (UCAS) Physical Science Laboratory Huairou National Comprehensive Science Center School of Physics and Astronomy Shanghai Jiao Tong University KLPPAC-MoE SKLPPC Department of Physics University of Liverpool Kavli IPMU (WPI) UTIAS The University of Tokyo Department of Physics University of California PRISMA Cluster of Excellence & Mainz Institute of Theoretical Physics Johannes Gutenberg-Universit?t Mainz Department of Modern Physics University of Science and Technology of China Department of Physics & Astronomy University of Pittsburgh Tsung-dao Lee Institute Department of Physics National Taiwan University Department of Physics University of Washington Department of Physics Nanjing University School of Nuclear Science and Technology University of South China Department of Physics University of Texas at Dallas Department of Physics and Center for High Energy and High Field Physics National Central University Institute of Frontier and Interdisciplinary Science and Key Laboratory of Particle Physics and Particle Irradiation (MOE) Shandong University Department of Physics Hong Kong University of Science and Technology Theoretical Physics Department Fermi National Accelerator Laboratory Maryland Center for Fundamental Physics Department of Physics University of Maryland School of Physics and Institute for Collider Particle Physics University of the Witwatersrand iThemba LABS National Research Foundation Vinca Institute of Nuclear Sciences University of Belgrade Department of Physics University of Michigan Center for Theoretical Physics of the Universe Institute of Basic Science Department of Physics University of Arizona Department of Physics University of Chicago Lawrence Berkeley National Laboratory Chi

The discovery of the Higgs boson with its mass around 125 GeV by the ATLAS and CMS Collaborations marked the beginning of a new era in high energy *** Higgs boson will be the subject of extensive studies of the ongoing LHC *** the same time,lepton collider based Higgs factories have been proposed as a possible next step beyond the LHC,with its main goal to precisely measure the properties of the Higgs boson and probe potential new physics associated with the Higgs *** Circular Electron Positron Collider(CEPC)is one of such proposed Higgs *** CEPC is an e^+e^- circular collider proposed by and to be hosted in *** in a tunnel of approximately 100 km in circumference,it will operate at a center-of-mass energy of 240 GeV as the Higgs *** this paper,we present the first estimates on the precision of the Higgs boson property measurements achievable at the CEPC and discuss implications of these measurements.

关键词： CEPC Higgs bos on Higgs boson properties Higgs boson couplings Higgs factory effective field theory,EFT

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Improved dark ambient degradation of organic pollutants by cerium strontium cobalt perovskite

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Journal of Environmental Sciences 2020年第4期32卷 110-118页

作者： Huihuang Chen Julius Motuzas Wayde Martens joao C.Diniz da costa The University of Queensland FIM^2 Lab-Functional Interfacial Materials and Membranes LaboratorySchool of Chemical EngineeringBrisbaneQld 4072Australia Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of ChinaAnhui 230026China Science and Engineering Faculty Queensland University of TechnologyBrisbaneQld 4000Australia LAQV-REQUIMTE (Bio)Chemical Process EngineeringDepartment of ChemistryFaculty of Science and TechnologyUniversidade NOVA de LisboaCaparica 2829-516Portugal

This work investigates the effect of cerium substation into strontium cobalt perovskites(CeSrCoO)for the oxidative degradation of OrangeⅡ(OII)in dark ambient conditions without the aid of any external stimulants such as light,heating or chemical *** OII degradation rate by CeSrCoO reached 65%in the first hour,whilst for the blank sample without cerium(SrCoO)took over 2 hr to reach the same level of OII ***,the cerium substitution improved the catalytic activity of the perovskite material,mainly associated with the Ce0.1Sr0.9CoO3 perovskite *** contacting CeSrCoO,the-N=Nazo bonds of the OII molecules broke down resulting in electron donation and the formation of *** electrons are injected into the CeSrCoO and resulted in a redox pair of Co3+/Co2+,establishing a bridge for the electron transfer between OII and the ***,the electrons also formed reactive species(·OH)responsible for OII degradation as evidenced by radical trapping *** species were formed via the reaction between 02 and donated electrons from OII with the aid of cobalt redox *** the prepared materials dispensed with the need for light irradiation and additional oxidants,it opens a window of environmental applications for treating contaminated wastewaters.

关键词： dark catalysis Acid orange degradation Cerium substituted perovskite Catalytic activity

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Computational fluid dynamics applied to high temperature hydrogen separation membranes

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Frontiers of Chemical Science and Engineering 2012年第1期6卷 3-12页

作者： Guozhao JI Guoxiong WANG Kamel HOOMAN Suresh BHATIA joao C. DINIZ da costa School of Chemical Engineering the University of Queensland Brisbane 4072 Australia School of Mechanical and Mining Engineering the University of Queensland Brisbane 4072 Australia

This work reviews the development of computational fluid dynamics （CFD） modeling for hydrogen separation, with a focus on high temperature membranes to address industrial requirements in terms of membrane systems as contactors, or in membrane reactor arrange- ments. CFD modeling of membrane,.s attracts interesting challenges as the membrane provides a discontinuity of flow, and therefore cannot be solved by the Navier-Stokes equations. To address this problem, tile concept of source has been introduced to understand gas flows on both sides or domains （feed and permeate） of the membrane. This is an important solution, as the gas flow and concentrations in the permeate domain are intrinsically affected by the gas flow and concentrations in the feed domain and vice-versa. In turn, the source term will depend on the membrane used, as different membrane materials comply with different transport mechanisms, in addition to varying gas selectiv- ity and fluxes. This work also addresses concentration polarization, a common effect in membrane systems, though its significance is dependent upon the performance of the membrane coupled with the operating conditions. Finally, CFD modeling is shifting from simplified single gas simulation to industrial gas mixtures, when the mathematical treatment becomes more complex.

关键词： membrane gas separat:ion computationalfluid dynamics concentration polarization hydrogen

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Current advances in solid free-form techniques for osteochondral tissue engineering

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Bio-Design and Manufacturing 2018年第3期1卷 171-181页

作者： joao Bebiano costa Joana Silva-Correia Rui Luis Reis Joaquim Miguel Oliveira B's Research Group I3Bs - Research Institute onBiomaterials Biodegradables and Biomimetics University ofMinho Headquarters of the European Institute of Excellenceon Tissue Engineering and Regenerative Medicine AveParkParque de Ciencia e Tecnologia Zona Industrial da Gandra4805-017 Barco Guimaraes Portugal ICVS/3B's-PT Government Associate Laboratory Braga Guimarfies Portugal The Discoveries Centre for Regenerative and PrecisionMedicine Headquarters at University of MinhoAvepark 4805-017 Barco Guimaraes Portugal

Osteochondral （OC） lesions are characterized by defects in two different zones, the cartilage region and subchondral bone region. These lesions are frequently associated with mechanical instability, as well as osteoarthritic degenerative changes in the knee. The lack of spontaneous healing and the drawbacks of the current treatments have increased the attention from the scientific community to this issue. Different tissue engineering approaches have been attempted using different polymers and different scaffolds＇ processing. However, the current conventional techniques do not allow the full control over scaffold fabrication, and in this type of approaches, the tuning ability is the key to success in tissue regeneration. In this sense, the researchers have placed their efforts in the development of solid free-form （SFF） techniques. These techniques allow tuning different properties at the micro-macro scale, creating scaffolds with appropriate features for OC tissue engineering. In this review, it is discussed the current SFF techniques used in OC tissue engineering and presented their promising results and current challenges.

关键词： Solid free-form Osteochondral Tissue engineering Scaffolds

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Antiglycation and antioxidant activities of the crude extract and saponin fraction of Tribulus terrestris before and after microcapsule release

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Journal of Integrative Medicine 2022年第2期20卷 153-162页

作者： Célia Cristina Malaguti Figueiredo Amanda da costa Gomes Filipe Oliveira Granero joao Luiz Bronzel Junior Luciana Pereira Silva Valdecir Farias Ximenes Regildo Márcio Goncalves da Silva Institute of Chemistry São Paulo State UniversityAraraquaraSão Paulo 14800-060Brazil Educational Foundation of the City of Assis AssisSão Paulo 19807-130Brazil Department of Chemistry School of SciencesSão Paulo State UniversityBauruSão Paulo 17033-360Brazil Department of Biotechnology School of SciencesHumanities and LanguagesSão Paulo State UniversityAssisSão Paulo 19806-900Brazil

Objective:The present study investigated antiglycation and antioxidant activities of crude dry extract and saponin fraction of Tribulus *** also developed a method of microencapsulation and evaluated antiglycation and antioxidant activities of crude dry extract and saponin fraction before and after microcapsule ***:Antiglycation activity was determined by relative electrophoretic mobility(REM),free amino groups and inhibition of advanced glycation end-product(AGE)*** activity was determined by 2,2-diphenyl-1-picrylhydrazyl(DPPH),ferric ion-reducing antioxidant power(FRAP),nitric oxide(NO)and thiobarbituric acid reactive species(TBARS)*** were prepared using maltodextrin as wall material and freeze-drying as encapsulation *** characterization of microcapsules was evaluated by scanning electron microscopy,and encapsulation efficiency and microcapsule release were determined by total saponins *** and antioxidant assays were performed using crude dry extract and saponin fraction of *** before and after ***:Saponin fraction showed an increase of 32.8%total ***-performance liquid chromatography-mass spectrometry analysis showed the presence of saponins in the obtained *** evaluation by REM demonstrated that samples before and after release presented antiglycation activity similar to bovine serum albumin treated with ***,samples inhibited AGE formation,highlighting treatment with saponin fraction after release(89.89%).Antioxidant tests demonstrated antioxidant activity of the *** dry extract before encapsulation presented the highest activities in DPPH(92.00%)and TBARS(32.49%)*** fraction before encapsulation in FRAP test(499μmol Trolox equivalent per gram of dry sample)and NO test(15.13μmol nitrite formed per gram of extract)presented the highest ***:This study presen

关键词： Glycation Microencapsulation Oxidative stress Saponins Tribulus terrestris

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Understanding bark thickness variations for Araucaria angustifolia in southern Brazil

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Journal of Forestry Research 2021年第3期32卷 1077-1087页

作者： Emanuel Arnoni costa Veraldo Liesenberg César Augusto guimaraes Finger AndréFelipe Hess Cristine Tagliapietra Schons Graduate Program in Forest Engineering Santa Catarina State University(UDESC)LagesSC 88520-000Brazil Department of Forest Engineering Federal University of Uberlandia(UFU)Monte CarmeloMG 38500-000Brazil Graduate Program in Forest Engineering Federal University of Santa Maria(UFSM)Santa MariaRS 97105-900Brazil Graduate Program in Agroecosystems Federal Technological University of Parana(UFTPR)Dois VizinhosPR 85660-000Brazil

This study aimed to understand bark thickness variations of Araucaria angustifolia(Bertol.)Kuntze trees growing in natural forest remnants in southern Brazil,and their relationship with quantitative and qualitative *** thickness must be accurately estimated in order to determine timber volume *** is an important variable for the sustainable management and conservation of araucaria *** spite of its importance and visibility,bark thickness variations have not been evaluated for this key species in southern Brazil.A total of 104 trees were selected,and their qualitative and quantitative attributes such as diameter at breast height(D_(BH)),height(H),crown base height(C_(BH)),crown length(C_(L)),social position(S_(P)),stoniness(S_(T)),position on the relief(P_(R)),vitality(V_T)and branch arrangement(B_(A))were *** trees were categorized into two groups:red bark or gray *** analysis and artificial neural networks(ANN)were used for modelling bark *** results indicate that:(1)bark thickness showed good correlation to D_(BH),with 0.76 as coefficient of determination(RS_P),0.540 as Mean Absolute Error(M_(AE))and 22.4 root-meansquare error in percentage(R_(MSE%));(2)the trend changed according to bark colour,with significant differences for the intersection(_0–Pr>F:p=0.0124)and slope(β_(1)–Pr>F:p=0.0126)of bark thickness curves between groups;(3)the highest correlation of bark thickness was found with:D_(BH)(ρ=0.88),H(ρ=0.58),C_(BH)(ρ=0.46),S_(P)(ρ=-0.52),and B_(A)(ρ=-0.32);(4)modelling with ANN confirmed high adjustment(R^(2)=0.99)and accuracy(R_(MSE%)=3.0)of the *** is an efficient and robust technique for the modelling of various qualitative and quantitative attributes commonly used in forest *** effective use of ANN to estimate araucaria bark in natural forests reinforces its potential,besides the possibility of application for other forest species.

关键词： Dendrometry attributes Crown characteristics Prediction models Bark factor Parana-pine

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Intranasal delivery of nanostructured lipid carriers,solid lipid nanoparticles and nanoemulsions:A current overview of in vivo studies

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Acta Pharmaceutica Sinica B 2021年第4期11卷 925-940页

作者： Cláudia Pina costa joao Nuno Moreira JoséManuel Sousa Lobo Ana Catarina Silva UCIBIO/REQUIMTE MedtechLaboratory of Pharmaceutical TechnologyDepartment of Drug SciencesFaculty of PharmacyUniversity of PortoPorto 4050-313Portugal CNC-Center for Neuroscience and Cell Biology Center for Innovative Biomedicine and Biotechnology(CIBB)University of CoimbraFaculty of Medicine(Pólo I)Coimbra 3004-504Portugal UC-University of Coimbra CIBBFaculty of PharmacyPólo Das Ciências da SaúdeCoimbra 3000-548Portugal FP-ENAS(UFP Energy Environment and Health Research Unit)CEBIMED(Biomedical Research Centre)Faculty of Health SciencesUniversity Fernando PessoaPorto 4249-004Portugal

The management of the central nervous system(CNS)disorders is challenging,due to the need of drugs to cross the blood-brain barrier(BBB)and reach the *** the various strategies that have been studied to circumvent this challenge,the use of the intranasal route to transport drugs from the nose directly to the brain has been showing promising *** addition,the encapsulation of the drugs in lipid-based nanocarriers,such as solid lipid nanoparticles(SLNs),nanostructured lipid carriers(NLCs)or nanoemulsions(NEs),can improve nose-to-brain transport by increasing the bioavailability and site-specifc *** review provides the state-of-the-art of in vivo studies with lipid-based nanocarriers(SLNs,NLCs and NEs)for nose-to-brain *** on the literature available from the past two years,we present an insight into the different mechanisms that drugs can follow to reach the brain after intranasal *** results of pharmacokinetic and pharmacodynamics studies are reported and a critical analysis of the differences between the anatomy of the nasal cavity of the different animal species used in in vivo studies is carried *** the exact mechanism of drug transport from the nose to the brain is not fully understood and its effectiveness in humans is unclear,it appears that the intranasal route together with the use of NLCs,SLNs or NEs is advantageous for targeting drugs to the *** systems have been shown to be more effective for nose-to-brain delivery than other routes or formulations with non-encapsulated drugs,so they are expected to be approved by regulatory authorities in the coming years.

关键词： Nose-to-brain delivery Intranasal administration Nanostructured lipid carriers NLC Solid lipid nanoparticles SLN Nanoemulsions In vivo studies Pharmacokinetic Pharmacodynamics

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Indirect printing of hierarchical patient-specific scaffolds for meniscus tissue engineering

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Bio-Design and Manufacturing 2019年第4期2卷 225-241页

作者： joao Bcosta Joana Silva-Correia Sandra Pina Alain da Silva Morais Sílvia Vieira Hélder Pereira joao Espregueira-Mendes Rui LReis Joaquim M.Oliveira B′s Research Group I3Bs-Research Institute on BiomaterialsBiodegradables and BiomimeticsUniversity of MinhoHeadquarters of the European Institute of Excellence on Tissue Engineering and Regenerative MedicineAveParkZona Industrial da Gandra4805-017 Barco GmrPortugal ICVS/3B’s-PT Government Associate Laboratory Braga/GuimaraesPortugal The Discoveries Centre for Regenerative and Precision Medicine Headquarters at University of MinhoAvepark4805-017 BarcoGuimar'sPortugal Ripoll y De Prado Sports Clinic:Murcia-Madrid FIFA Medical Centre of Excellence MurciaSpain Orthopedic Department Centro Hospitalar Póvoa de Varzim Vila do CondePortugal Clínica do Dragao Espregueira-Mendes Sports CentreFIFA Medical Centre of ExcellencePortoPortugal Dom Henrique Research Centre PortoPortugal Orthopedic Department University of MinhoBragaPortugal

The complex meniscus tissue plays a critical role in the knee. The high susceptibility to injury has led to an intense pursuit for better tissue engineering regenerative strategies, where scaffolds play a major role. In this study, indirect printed hierarchical multilayered sca ffolds composed by a silk fibroin (SF) upper layer and an 80/20 (w/w) ratio of SF/ionic-doped β-tricalcium phosphate (TCP) bottom layer were developed. Furthermore, a comparative analysis between two types of sca ffolds pro- duced using di fferent SF concentrations, i.e., 8% (w/v) (Hi8) and 16% (w/v) (Hi16) was performed. In terms of architecture and morphology, the produced sca ffolds presented homogeneous porosity in both layers and no di fferences were observed when comparing both sca ffolds. A decrease in terms of mechanical performance of the sca ffolds was observed when SF concentration decreased from 16 to 8% (w/v). Hi16 revealed a static compressive modulus of 0.66 ± 0.05 MPa and dynamical mechanical properties ranging from 2.17 ± 0.25 to 3.19 ± 0.38 MPa. By its turn, Hi8 presented a compressive modulus of 0.27 ± 0.08 MPa and dynamical mechanical properties ranging from 1.03 ± 0.08 MPa to 1.56 ± 0.13 MPa. In vitro bioactivity studies showed formation of apatite crystals onto the surface of Hi8 and Hi16 bottom layers. Human meniscus cells (hMCs) and human primary osteoblasts were cultured separately onto the top layer (SF8 and SF16) and bottom layer (SF8/TCP and SF16/TCP) of the hierarchical sca ffolds Hi8 and Hi16, respectively. Both cell types showed good adhesion and proliferation as denoted by the live/dead staining, Alamar Blue assay and DNA quanti fication analysis. Subcutaneous implantation in mice revealed weak in flammation and sca ffold’s integrity. The hierarchical indirect printed SF sca ffolds can be promising candidate for meniscus TE sca ffolding applications due their suitable mechanical properties, good biological performance and possibility of being applied in a patie

关键词： Patient-specific Indirect printing Hierarchical Silk fibroin Enzymatic-cross-linking Meniscus

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Challenges in maintaining the probiotic potential in alcoholic beverage development

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Food Bioscience 2023年第2期52卷 133-142页

作者： daiane costa dos Santos Josemar Goncalves de Oliveira Filho Juliana Risso Andretta Fabiano guimaraes Silva Mariana Buranelo Egea Goias Federal University(UFG) Institute of Tropical Pathology and Public HealthIPTSP-UFGStreet 235s/nEast University Sector74605-450GoianiaGOBrazil Sao Paulo State University(UNESP) Sacholo of Pharmaceutical SciencesRodovia Araraquara-Jau Km 114800-903AraraquaraSao PauloBrazil Goiano Federal Institute of Education Science and TechnologyCampus Rio VerdeRod.Sul GoianaKm 01Cx Postal 6675901-970Rio VerdeGOBrazil

The development of new functional alcoholic beverages to promote health benefits is a major challenge for current *** review presents the main applications of microorganisms with functional potential and resistant to the alcoholic environment as well as the characteristics that enable the use of alcoholic beverages as vehicles for probiotic *** our online search,it was possible to notice that the most prominent microorganisms with functional potential and that present alcohol resistance were Saccharomyces cerevisiae *** and water-kefir(composed of Saccharomyces sp.,Lactobacillus sp.,Leuconostoc sp.,Acetobacter sp.,Bifidobacterium sp.).Processing conditions,temperature,fermentation time,and raw materials used in the production of beverages are important parameters that are evaluated and are dependent on the alcohol concentration and cellular viability of the desired probiotic microorganism(s).Viability studies of probiotic microorganisms in vegetable matrices have been conducted for water-kefir and Saccharomyces *** was successfully incorporated into the developmental process of alcoholic beverages with alcohol contents ranging from 3.83 to 23%(v/v),whereas kefir beverage had an alcohol content ranging from 0.8 to 4.96%(v/v).Furthermore,to ensure the maintenance of probiotic viability in alcoholic matrices,the encapsulation technique can be used as an alternative to promote greater protection and viability of probiotics against adverse conditions.

关键词： Functional beverage Microbiological resistance Alcohol concentration

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