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Effects of the physicochemical properties of gold nanostructures on cellular internalization

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Regenerative Biomaterials 2015年第4期2卷 273-280页

作者： Ningqiang Gong Shizhu chen Shubin Jin Jinchao Zhang paul c.wang Xing-Jie Liang cAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety National Center for Nanoscience and TechnologyBeijing 100190China Key Laboratory of chemical Biology of Hebei Province Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of EducationCollege of Chemistry and Environmental ScienceHebei UniversityBaoding 071002P.R.China Laboratory of Molecular Imaging Department of RadiologyHoward UniversityWashingtonDC 20060USA

Unique physicochemical properties of Au nanomaterials make them potential star materials in biomedicalapplications. However, we still know a little about the basic problem of what really mattersin fabrication of Au nanomaterials which can get into biological systems, especially cells, with highefficiency. An understanding of how the physicochemical properties of Au nanomaterials affecttheir cell internalization is of significant interest. Studies devoted to clarify the functions of variousproperties of Au nanostructures such as size, shape and kinds of surface characteristics in cell internalizationare under way. These fundamental investigations will give us a foundation for constructingAu nanomaterial-based biomedical devices in the future. In this review, we present the current advancesand rationales in study of the relationship between the physicochemical properties of Aunanomaterials and cell uptake. We also provide a perspective on the Au nanomaterial-cell interactionresearch.

关键词： gold nanostructures cellular internalization size,shape surface chemistry

Quasi-static and dynamic compressive behaviour of additively manufactured Menger fractal cube structures

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Defence Technology（防务技术） 2024年第7期37卷 39-49页

作者： Damith Mohotti Dakshitha Weerasinghe Madhusha Bogahawaththa Hongxu wang Kasun Wijesooriya paul JHazell School of Engineering and Technology UNSWCanberraACT2600Australia School of civil Mining and Environmental EngineeringFaculty of Engineering and Information SciencesUniversity of WollongongWollongongNSWAustralia

This paper presents the first-ever investigation of Menger fractal cubes'quasi-static compression and impact *** cubes with different void ratios were 3D printed using polylactic acid(PLA)with dimensions of 40 mm×40 mm×40 *** different orders of Menger cubes with different void ratios were considered,namely M1 with a void ratio of 0.26,M2 with a void ratio of 0.45,and M3with a void ratio of ***-static compression tests were conducted using a universal testing machine,while the drop hammer was used to observe the behaviour under impact *** fracture mechanism,energy efficiency and force-time histories were *** the structured nature of the void formation and predictability of the failure modes,the Menger geometry showed some promise compared to other alternatives,such as foams and *** the increasing void ratio,the Menger geometries show force-displacement behaviour similar to hyper-elastic materials such as rubber and *** third-order Menger cubes showed the highest energy absorption efficiency compared to the other two geometries in this *** findings of the present work reveal the possibility of using additively manufactured Menger geometries as an energy-efficient system capable of reducing the transmitting force in applications such as crash barriers.

关键词： Additive manufacturing Fractal geometries Menger cube Energy absorption Quasi-static

Improving Heat Transfer in Parabolic Trough Solar collectors by Magnetic Nanofluids

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Energy Engineering 2024年第4期121卷 835-848页

作者： Ritesh Singh Abhishek Gupta Akshoy Ranjan paul Bireswar paul Suvash c.Saha Department of Applied Mechanics Motilal Nehru National Institute of Technology AllahabadPrayagrajIndia Department of Mechanical and Mechatronic Engineering University of Technology SydneySydneyAustralia

A parabolic trough solar collector(PTSc)converts solar radiation into thermal ***,low thermal efficiency of PTSc poses a hindrance to the deployment of solar thermal power *** performance of PTSc is enhanced in this study by incorporating magnetic nanoparticles into the working *** circular receiver pipe,with dimensions of 66 mm diameter,2 mm thickness,and 24 m length,is exposed to uniform temperature and velocity *** working fluid,Therminol-66,is supplemented with Fe3O4 magnetic nanoparticles at concentrations ranging from 1%to 4%.The findings demonstrate that the inclusion of nanoparticles increases the convective heat transfer coefficient(HTc)of the PTSc,with higher nanoparticle volume fractions leading to greater heat transfer but increased pressure *** thermal enhancement factor(TEF)of the PTSc is positively affected by the volume fraction of nanoparticles,both with and without a magnetic ***,the scenario with a 4%nanoparticle volume fraction and a magnetic field strength of 250 G exhibits the highest TEF,indicating superior thermal *** findings offer potential avenues for improving the efficiency of PTScs in solar thermal plants by introducing magnetic nanoparticles into the working fluid.

关键词： Parabolic trough solar collector(PTSc) magnetic nanofluid(MNF) heat transfer convective heat transfer coefficient(HTc) thermal enhancement factor(TEF)

Boson star superradiance

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Science china(Physics,Mechanics & Astronomy) 2024年第6期67卷 69-78页

作者： He-Yu Gao paul M.Saffin Yi-Jie wang Qi-Xin Xie Shuang-Yong Zhou School of Physical Sciences University of Science and Technology of ChinaHefei 230026China School of Physics and Astronomy University of NottinghamUniversity ParkNottingham NG72RDUK Interdisciplinary center for Theoretical Study University of Science and Technology of ChinaHefei 230026China Peng Huanwu center for Fundamental Theory Hefei 230026China

Recently,it has been realized that in some systems internal space rotation can induce energy amplification for scattered waves,similar to rotation in real *** particularly,it has been shown that energy extraction is possible for a Q-ball,a stationary non-topological soliton that is coherently rotating in its field *** this paper,we generalize the analysis to the case of boson stars,and show that the same energy extraction mechanism still works for boson stars.

关键词： superradiance boson star field space rotation

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Phenylboronic acid-functionalized magnetic nanoparticles for one-step saccharides enrichment and mass spectrometry analysis

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Biophysics Reports 2015年第2期1卷 61-70页

作者： Xiangdong Xue Yuanyuan Zhao Xu Zhang chunqiu Zhang Anil Kumar Xiaoning Zhang Guozhang Zou paul c.wang Jinchao Zhang Xing-Jie Liang cAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety National Center for Nanoscience and Technology Laboratory of Pharmaceutics School of Medicine Tsinghua University Fu Jen catholic University college of chemistry & Environmental Science Chemical Biology Key Laboratory of Hebei Province Hebei University

In this work,2-(2-aminoethoxy) ethanolblocked phenylboronic acid-functionalized magnetic nanoparticles(blocked PMNPs) were fabricated for selective enrichment of different types of *** phenylboronic acid was designed for capturing the cis-diols moieties on saccharides molecules,and the 2-(2-aminoethoxy) ethanol can deplete the nonspecific absorption of peptides and proteins which always coexisted with *** mass spectrometry analysis,the PMNPs bound saccharides can be directly applied onto the MALDI plate with matrix without removing the *** PMNPs,the simple saccharide(glucose) could be detected in pmol *** complex saccharides can also be reliably purified and analyzed;16 different Nglycans were successfully identified from ovalbumin,and the high-abundance N-glycans can be detected even when the ovalbumin was in very low concentration(2 μg).In human milk,ten different oligosaccharides were identified,and the lactose can still be detected when the human milk concentration was low to 0.01 μL.

关键词： Glucose MALDI-TOF MS Magnetic nanoparticles N-Glycans Oligosaccharides

A marathon,not a sprint:Increasing population physical activity as a legacy of sports mega-events

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Journal of Sport and Health Science 2024年第6期13卷 732-735页

作者： Fiona c.Bull paul J.Simpson Physical Activity Unit Department of Health PromotionWorld Health OrganizationGeneva CH-1211Switzerland The BMJ London WC1H 9JPUK

*** matters The withdrawal of Australia as hosts for the commonwealth Games in 2026 demonstrates that large international sporting events are more than just sporting mastery,medals,and *** also matters.1 The cost of hosting a major international tournament is eye-wateringly *** governments need to show that the billions of dollars of investment deliver a return beyond sporting glory to justify the resources that are spent.

关键词： return dollar sport

Engineering the axial coordination of cobalt single atom catalysts for efficient photocatalytic hydrogen evolution

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Nano Research 2024年第6期17卷 5114-5121页

作者： Ning Kang Lingwen Liao Xue Zhang Zhen He Binlu Yu Jiahong wang Yongquan Qu paul Kchu Seeram Ramakrishna Xue-Feng Yu Xin wang Licheng Bai Materials Interfaces center Shenzhen Institute of Advanced TechnologyChinese Academy of Sciences(CAS)Shenzhen 518055China Key Laboratory of Materials Physics Anhui Key Laboratory of Nanomaterials and NanotechnologyCAS Center for Excellence in NanoscienceInstitute of Solid State PhysicsChinese Academy of SciencesHefei 230031China Department of chemistry City University of Hong KongKowloonHong Kong 999077China Hong Kong Branch of National Precious Metals Material Engineering Research center(NPMM) City University of Hong KongKowloonHong Kong 999077China Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Department of Physics and Department of Materials Science and Engineering City University of Hong KongKowloonHong Kong 999077China National University of Singapore(NUS)centre for Nanofibers and Nanotechnology Department of Mechanical EngineeringNational University of SingaporeSingapore 117542Singapore

Improving the catalytic activity of non-noble metal single atom catalysts(SAcs)has attracted considerable attention in materials *** optimizing the local electronic structure of single atom can greatly improve their catalytic activity,it often involves in-plane modulation and requires high ***,we report a novel strategy to manipulate the local electronic structure of SAcs via the modulation of axial co-S bond anchored onto graphitic carbon nitride(c_(3)N_(4))at room temperature(RT).Each co atom is bonded to four N atoms and one S atom(co-(N,S)/c_(3)N_(4)).Owing to the greater electronegativity of S in the co-S bond,the local electronic structure of the co atoms is available to be controlled at a relatively moderate ***,when employed for the photocatalytic hydrogen evolution reaction,the adsorption energy of intermediate hydrogen(H*)on the co atoms is remarkably *** the presence of the co-(N,S)/c_(3)N_(4)SAcs,the hydrogen evolution rates reach up to 10 mmol/(g·h),which is nearly 10 and 2.5 times greater than the rates in the presence of previously reported transition metal/c_(3)N_(4)and noble platinum nanoparticles(PtNPs)/c_(3)N_(4)catalysts,*** to the tailorable axial co-S bond in the SAc,the local electronic structure of the co atoms can be further optimized for other photocatalytic *** axial coordination engineering strategy is universal in catalyst designing and can be used for a variety of photocatalytic applications.

关键词： transition metal single-atom local electronic structure photocatalytic hydrogen evolution graphitic carbon nitride axial coordination environment

AI for science: Predicting infectious diseases

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Journal of Safety Science and Resilience 2024年第2期5卷 130-146页

作者： Alexis Pengfei Zhao Shuangqi Li Zhidong cao paul Jen-Hwa Hu Jiaojiao wang Yue Xiang Da Xie Xi Lu Institute of Automation Chinese Academy of SciencesUniversity of Chinese Academy of SciencesBejing 100090China Systems Engineering Cornll UniversityIthacaNY 14853USA David Eccles School of Business the University of UtahUtahUSA collge of Electrical Engineering Sichuan UniversityChina Department of Electrical Engineering Shanghai Jiao Tong UniversityShanghai 200240China School of Electrical Engineering Southeast UniversityNanjing 210096China

The global health landscape has been persistently challenged by the emergence and re-emergence of infectious *** epidemiological models,rooted in the early 2oth century,have provided foundational in-sights into disease ***,the intricate web of modern global interactions and the exponential growth of available data demand more advanced predictive *** is where AI for Science(AI4S)comes into play,offering a transformative approach by integrating artificial intelligence(Al)into infectious disease *** paper elucidates the pivotal role of AI4s in enhancing and,in some instances,superseding tradi-tional epidemiological *** harnessing AI's capabilities,AI4S facilitates real-time monitoring,sophisticated data integration,and predictive modeling with enhanced *** comparative analysis highlights the stark contrast between conventional models and the innovative strategies enabled by *** essence,Al4S represents a paradigm shift in infectious disease *** addresses the limitations of traditional models and paves the way for a more proactive and informed response to future *** we navigate the complexities of global health challenges,Al4S stands as a beacon,signifying the next phase of evolution in disease prediction,characterized by increased accuracy,adaptability,and efficiency.

关键词： AI for science(AI4S) Data integration Global healthchallenges Infectious disease prediction Predictive modeling Real-timemonitoring

Long-term Integration Ability of the Submillimeter Wave Astronomy Satellite(SWAS)Spectral Line Receivers

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Research in Astronomy and Astrophysics 2024年第6期24卷 315-322页

作者： Bing-Ru wang Di Li paul F.Goldsmith Jingwen Wu chao-Wei Tsai Rudolf Schieder Gary J.Melnick National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China University of chinese Academy of Sciences Beijing 100049China Research center for Astronomical computing Zhejiang LaboratoryHangzhou 311100China Jet Propulsion Laboratory California Institute of TechnologyPasadenaCA 91109USA Institute for Frontiers in Astronomy and Astrophysics Beijing Normal UniversityBeijing 102206China KOSMA I.Physik.InstitutUniversität zu KölnZülpicher Str.7750937 KölnGermany center for Astrophysics|Harvard&Smithsonian 60 Garden StreetMS 66CambridgeMA 02138USA

The Submillimeter Wave Astronomy Satellite(SWAS)was the first space telescope capable of high spectral resolution observations of terahertz spectral *** have investigated the integration ability of its two receivers and spectrometer during five and a half years of on-orbit *** cI,O_(2),H_(2)O,and^(13)cO spectra taken toward all observed Galactic sources were *** present results are based on spectra with a total integration time of up to 2.72×10~4hr(■10~8s).The noise in the spectra is generally consistent with that expected from the radiometer equation,without any sign of approaching a noise *** noise performance reflects the extremely stable performance of the passively cooled front end as well as other relevant components in the SWAS instrument throughout its mission lifetime.

关键词： telescopes space vehicles:instruments instrumentation:miscellaneous ISM:lines and bands