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SmartMat 2023年第6期4卷 84-97页

作者： Xiaoyong Mo Brigitte Bouchet Fabre Nathalie Herlin-Boime Edmund c.M.Tse HKU-cAS Joint Laboratory on New Materials Department of ChemistryUniversity of Hong KongHong Kong SARChina NIMBE CEACNRSCEA SaclayUniversitéParis-SaclayGif-sur-YvetteFrance HKU Zhejiang Institute of Research and Innovation HangzhouChina

Efficient and durable electrocatalysts are instrumental in enabling next-generation fuel cell *** present,expensive precious metals are used as state-of-the-art *** this report,cost-effective nanosized tantalum-based alternatives are synthesized for the first time via a green and scalable laser pyrolysis method as bifunctional catalysts for direct peroxide–peroxide fuel *** rapid laser pyrolysis strategy allows for the production of nanoparticles at a laboratory scale of grams per hour,compatible with a detailed exploration of the functional properties of as-synthesized *** varying the precursor ratio between ammonia and tantalum ethanolate,five tantalum-based nanomaterials(TaNOc)are prepared with crystalline phases of Ta_(2)O_(5),Ta_(4)N_(5),Ta_(3)N_(5),and TaN in tunable *** studies in neutral and alkaline conditions demonstrate that Ta_(4)N_(5) is the active component for both H_(2)O_(2) oxidation and *** isotope effect studies show that protons are involved at or before the rate-determining ***-term stability studies indicate that Ta_(3)N_(5) grants surfactant-free TaNOc-enhanced longevity during electrocatalytic *** together,bifunctional TaNOc can act as active and robust electrocatalysts for H_(2)O_(2) reduction and *** pyrolysis is envisioned to produce refractory metal nanomaterials with boosted corrosion resistance for energy catalysis.

关键词： bifunctional catalysis laser pyrolysis peroxide fuel cells tantalum nanomaterials

Secured cyber Security Algorithm for Healthcare System Using Blockchain Technology

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Intelligent Automation & Soft computing 2023年第2期35卷 1889-1906页

作者： D.Doreen Hephzibah Miriam Deepak Dahiya Nitin c.R.Rene Robin computational Intelligence Research Foundation(cIRF) Chennai600023TamilnaduIndia college of computer and Information Sciences Majmaah UniversityMajmaah11952Saudi Arabia Department of Electrical Engineering and computer Science College of Engineering and Applied ScienceUniversity of CincinnatiCincinnati45221OHUnited States Department of computer Science and Engineering Sri Sairam Engineering CollegeChennai600044TamilnaduIndia

Blockchain technology is critical in cyber *** most recent cryptographic strategies may be hacked as efforts are made to build massive elec-tronic *** of the ethical and legal implications of a patient’s medical data,cyber security is a critical and challenging problem in *** image secrecy is highly vulnerable to various types of *** a result,designing a cyber security model for healthcare applications necessitates extra caution in terms of data *** resolve this issue,this paper proposes a Lionized Golden Eagle based Homomorphic Elapid Security(LGE-HES)algorithm for the cybersecurity of blockchain in healthcare *** blockchain algorithm preserves the security of the medical image by performing hash *** execution of this research is carried out by MATLAB *** suggested fra-mework was tested utilizing computed Tumor(cT)pictures and MRI image data-sets,and the simulation results revealed the proposed model’s profound *** the simulation,94.9%of malicious communications were recognized and identiﬁed effectively,according to the total outcomes *** suggested model’s performance is also compared to that of standard approaches in terms of Root Mean Square Error(RMSE),Peak Signal to Noise Ratio(PSNR),Mean Square Error(MSE),time complexity,and other factors.

关键词： Healthcare system cybersecurity security data sharing blockchain

Effects of developmental plasticity on heat tolerance may be mediated by changes in cell size in Drosophila melanogaster

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Insect Science 2020年第6期27卷 1244-1256页

作者： Nadja Verspagen Felix P.Leiva Irene M.Janssen Wilco c.E.P.Verberk Department of Animal Ecology and Physiology Institute for Water and Wetland ResearchRadboud UniversityNijmegenThe Netherlands Department of Human Genetics Radboud University Medical CenterRadboud Institute for Molecular Life SciencesNijmegenThe Netherlands

There is a growing interest in the physiology underpinning heat tolerance of ectotherms and their responses to the ongoing rise in ***,there is no consensus about the underlying physiological *** to''the maintain aerobic scope and regulate oxygen supply^hypothesis,responses to warming at different organizational levels contribute to the ability to safeguard energy metabolism via aerobic *** the cellular level,a decrease in cell size increases the capacity for the uptake of resources(e.g.,food and oxygen),but the maintenance of electrochemical gradients across cellular membranes implies greater energetic costs in small *** this study,we investigated how different rearing temperatures atTected cell size and heat tolerance in the fruit fly Drosophila *** tested the hypothesis that smallcr-celled flies are more tolerant to acute,intense heat stress whereas larger-celled flies are more tolerant to chronic,mild heat *** used the thermal tolerance landscape framework,which incorporates the intensity and duration of thermal *** temperatures strongly affected both cell size and survival *** found different effects of developmental plasticity on tolerance to either chronic or acute heat ***-reared flies had both smaller cells and exhibited higher survival times under acute,intense heat stress when compared to cold-reared ***,under chronic,mild heat stress,the situation was reversed and cold-reared flies,consisting of larger cells,showed better *** differences in heat tolerance could have resulted from direct effects of rearing temperature or they may be mediated by the correlated changes in cell ***,our results are consistent with the idea that a smaller cell size may confer tolerance to acute temperatures via enhanced oxygen supply,while a larger cell may confer greater tolerance to chronic and less intense heat stress via more efTicient use of resources.

关键词： cell size heat stress rearing temperature thermal death time thermal tolerance

A fuzzy logic algorithm derived mechatronic concept prototype for crop damage avoidance during eco-friendly eradication of intra-row weeds

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Artificial Intelligence in Agriculture 2020年第1期4卷 116-126页

作者： Satya Prakash Kumar V.K.Tewari Abhilash K.chandel c.R.Mehta Brajesh Nare c.R.chethan Kaustubh Mundhada Prateek Shrivastava chanchal Gupta Smrutilipi Hota Indian council of Agricultural Research(IcAR) Central Institute of Agricultural EngineeringBhopalIndia Indian Institute of Technology Kharagpur 721302India Biological Systems Engineering Washington State UniversityPullman 99164WAUSA IcAR-central Potato Research Station Jalandhar 144026India IcAR-Directorate of Weed Research Jabalpur 482004India

crop damage during the intra-row weed eradiation is one of the biggest challenges in intercultural agricultural *** available mechanical systems provide effective weeding but result in excess crop *** the other hand,chemical based systems have been raising serious environmental and food *** study presents development of a cost-effectivemechatronic prototype for intra-rowweeding *** primary focus was on incurring minimal crop *** system integrates time of flight and inductive sensing into fuzzy logic algorithm for electronic control of a four-bar linkage mechanism(FBLM).The crank of FBLM was connected to the vertical rotary weed control shaft with weeding *** crop sensing triggers the electronic control to laterally shift the control shaft away from crop,proportional to the forward speed and soil *** developed algorithm incorporates varied conditions of soil,forward speed,and plant spacing to calculate dynamic lateral shift speed(SRPM).The prototype was evaluated to determine the relationships between the operating conditions and electronic control ***,the plant damage was assessed under varied conditions of plant spacing,forward speeds,soil cone index,operational depth and electronic control *** derived SRPM was established as the ultimate governing factor for avoiding crop damage that varied significantlywith electronic response time and soil strength(Pcreased significantly under higher forward speeds and lower plant spacing(Pcant potential of this system for effective control on weeds(>65%)and crop damage(<25%).

关键词： Intra-row weed control Mechatronic prototype Fuzzy logic algorithm Plant damage Weeding efficiency

Quantitative characterization of toughening mechanisms of rubber modified polymers

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Science china chemistry 1997年第2期40卷 146-151页

作者：朱晓光漆宗能徐虎李刚蔡忠龙 c.L.choy Institute of chemistry Chinese Academy of SciencesBeijing 100080China Department of Applied Physics Hong Kong Polytechnic UniversityHong Kong

The volume changes of rubber modified polymers under creep at room temperature were successfully used to characterize the toughening mechanisms of blends with brittle polymer matrices such as high impact *** approach cannot be applied to pseudo-ductile polymers such as polypropylene and polyamide,because they are ductile when stretched at low speed at room *** on the time-temperature equivalence princi ple,the volume change at low temperature is proposed to characterize quantitatively the toughening mechanisms of polymer blends with ductile matrices,which is illustrated by applying this approach to rubber modified polypropylene

关键词： pseudo-ductile polymer brittle-ductile transition time-temperature equivalence micro-damage toughening mechanisms

N_2O emissions from regional agricultural lands——A case study of Guizhou Province, southwestern china

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Science china Earth Sciences 2000年第1期43卷 103-112页

作者：徐文彬洪业汤陈旭晖 c.S.Li State Key Laboratory of Environmental Geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang 550002 China Institute of Environment and Resources chemistry Zhejiang University Hangzhou 310027 China Soil and Fertilizer Institute Guizhou Academy of Agricultural Sciences Guiyang 550013 China Institute for the Study of Earth Oceans and Space University of New Hampshire Durham USA.

To preliminarily study N2O emissions and the importance of environmental parameters on N2O flux from subtropical agroecosystem in china, N2O flux measurements were made at three cultivated agricultural lands in Guizhou Province, southwestern china. Based on the test and validation of daily N2O flux and its several associated variables between DNDc model and field measurements, DNDc model has been employed to estimate total N2O emissions from entire agricultural lands and its spatial distribution at county scale in Guizhou in 1995, and to assess the contributions of cropping practices on N2O emissions.

关键词： N_2O emission agricultural lands DNDc model

cleaning properties of dry adhesives

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Science china(Technological Sciences) 2010年第11期53卷 2942-2946页

作者： J. P. DíAZ TéLLEZ D. SAMEOTO c. MENON MENRVA Group School of Engineering Science Simon Fraser University Department of Mechanical Engineering University of Alberta

In this paper we present a study into the cleaning properties of synthetic dry adhesives. We have manufactured the adhesive micro-fibres through a low-cost, high yield fabrication method using Sylgard 184 Polydimethylsiloxane (PDMS) as the structural material. We deliberately contaminated the adhesive samples with different sized particles in the micro and macro scales and tested different cleaning methods for their efficacy with respect to each particle size. We investigated different cleaning methods, which included the use of wax moulding, vibration and pressure sensitive adhesives. For adhesion testing we used a custom system with a linear stage and a force sensor indenting a hemispherical probe into the adhesive surface and measuring the pull-off force. To characterize the cleaning efficacy we visually inspected each sample in a microscope and weighed the samples with a microgram-accuracy analytical balance. Results showed that the moulding method induced adhesion recovery in a greater percentage than the other cleaning methods and even helped with the recovery of collapsed posts in some cases. On the other hand pressure sensitive adhesives seem to have the upper hand with regards to certain particle sizes that can potentially pose problems with the moulding method.

关键词： biomimetic dry adhesive PDMS self-cleaning gecko climbing

A LOWER BOUND OF STABLE STATIONARY TRAJEcTORIES

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Acta Mathematica Scientia 2007年第3期27卷 535-540页

作者： J.M. Soriano c. Ding Departamento de Andlisis Matemdtico Facultad de Matematicas Universidad de Sevilla Aptdo. 1160 Sevilla 41080 Spain Department of Applied Mathematics Zhejiang University of Technology Hangzhou 310032 China

It is proven that an autonomous system verifying some conditions has at least one stable stationary trajectory and it is also given a lower bound to the number of unstable stationary trajectorlies.

关键词： Autonomous system continuation methods trajectory nondegenerate critical point zero point stationary trajectory stable trajectory asymptotically stable Morse inequalities

Microbial starch-binding domains are superior to granule-bound starch synthase I for anchoring luciferase to potato starch granules

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Progress in Natural Science:Materials International 2006年第12期16卷 1295-1299页

作者： Jean-Paul VINcKEN Luc c.J.M. SUURS Richard G.F. VISSER Laboratory of Plant Breeding Department of Plant Sciences Wageningen University Wageningen The Netherlands

Microbial starch-binding domains (SBD) and granule-bound starch synthase I (GBSSI) are proteins which are accumulated in potato starch granules. The efficiency of SBD and GBSSI for targeting active luciferase reporter proteins to granules during starch biosynthesis was compared. GBSSI or SBD sequences were fused to the N- or c-terminus of the luciferase (LUc) gene, via an artificial Pro-Thr encoding linker sequence. The genes were introduced into an amylose-free (amf) potato mutant. It appeared that SBD was superior to GBSSI as a targeting sequence, mainly because the luciferase retained higher activity in the SBD-containing fusion proteins than in the GBSSI-containing ones.

关键词： luciferase GBSS I SBD amf potato.

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