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Modelling of nanostructured TiO_2-based memristors

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Journal of Semiconductors 2015年第3期36卷 52-54页

作者： S.S.Shinde T.d.dongle Shivaji University Korea research Institute of Standards and Science

The fourth fundamental circuit element memristor completes the missing link between charge and mag- netic flux. It consists of the function of the resistor as well as memory in nonlinear fashion. The property of the memristor depends on the magnitude and direction of applied potential. This unique property makes it the primi- tive building block for many applications such as resistive memories, soft computing, neuromorphic systems and chaotic circuits etc. In this paper we report TiO2-based nanostructured memristor modelling. The present memris- tor model is constructed in MATLAB environment with consideration of the linear drift model of memristor. The result obtained from the linear drift model is well matched with earlier reported results by other research groups.

关键词： memristor linear drift model TiO2

SErIneALanine Killer:SPT promiscuity inhibits tumour growth via intra-tumoral deoxysphingolipid production

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Signal Transduction and Targeted Therapy 2020年第1期5卷 219-220页

作者： Mattia Falcone Oliver d.K.Maddocks University of Glasgow Institute of Cancer Sciences Wolfson Wohl Cancer Research CentreGarscube EstateGlasgow G611QHUK

In a recent article in Nature,Muthusami et al.1 highlight the promiscuity of serine palmitoyltransferase(SPT)for non-essential amino acids under low serine conditions,illustrating a previously unappreciated mechanism ... 详细信息

关键词： Killer SPT tumour

Marine Metagenome as A resource for Novel Enzymes

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Genomics, Proteomics & Bioinformatics 2015年第5期13卷 290-295页

作者： Amani d.Alma'abadi Takashi Gojobori Katsuhiko Mineta Computational Bioscience research Center (CBrC) King Abdullah University of Science and Technology (KAUST)

More than 99% of identified prokaryotes, including many from the marine environment, cannot be cultured in the laboratory. This lack of capability restricts our knowledge of microbial genetics and community ecology. Metagenomics, the culture-independent cloning of environmental dNAs that are isolated directly from an environmental sample, has already provided a wealth of information about the uncultured microbial world. It has also facilitated the discovery of novel bio- catalysts by allowing researchers to probe directly into a huge diversity of enzymes within natural microbial communities. recent advances in these studies have led to a great interest in recruiting microbial enzymes for the development of environmentally-friendly industry. Although the metage- nomics approach has many limitations, it is expected to provide not only scientific insights but also economic benefits, especially in industry. This review highlights the importance of metagenomics in mining microbial lipases, as an example, by using high-throughput techniques. In addition, we dis- cuss challenges in the metagenomics as an important part of bioinformatics analysis in big data.

关键词： Microbial diversity Culture-independent studies Catalysis Lipase Biotechnology

dual enzyme activated fluorescein based fluorescent probe

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Frontiers of Chemical Science and Engineering 2020年第1期14卷 117-121页

作者： Maria L.Odyniec Jordan E.Gardiner Adam C.Sedgwick Xiao-Peng He Steven d.Bull Tony d.James department of Chemistry University of BathBathBA27AYUK department of Chemistry University of Texas at AustinAustinTX 78712-1224USA Key Laboratory for Advanced Materials&Feringa Nobel Prize Scientist Joint research Center East China University of Science and TechnologyShanghai 200237China

A simple dual analyte fluorescein-based probe(PF3-Glc)was synthesised containingβ-glucosidase(β-glc)and hydrogen peroxide(H2O2)trigger *** presence ofβ-glc,resulted in fragmentation of the parent molecule releasing glucose and the slightly fluorescent mono-boronate fluorescein(PF3).Subsequently,in the presence of glucose oxidase(GOx),the released glucose was catalytically converted to d-glucono-δ-lactone,which produced H2O2 as a *** GOx-produced H2O2,resulted in classic H2O2-mediated boronate oxidation and the release of the highly emissive fluorophore,*** unique cascade reaction lead to an 80-fold increase in fluorescence intensity.

关键词： chemosensors dual-activation GOx fluorescence β-glucosidase molecular logic

Characterization of the Tomato Prosystemin Promoter:Organ-specific Expression,Hormone Specificity and Methyl Jasmonate responsiveness by deletion Analysis in Transgenic Tobacco Plants

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Journal of Integrative Plant Biology 2012年第1期54卷 15-32页

作者： Hamlet Avilés-Arnaut John Paul délano-Frier Center of research and Advanced Studies (Cinvestav) at Irapuato:Unit for Plant Biotechnology and Genetic Engineering

Tomato systemin is a bioactive peptide that regulates the systemic activation of wound-responsive genes. It is released from its 200 amino acid precursor called prosystemin. Initial tissue-localization and hormone-induced expression assays indicated that the tomato prosystemin gene （SIPS） accumulates mainly in floral tissues and in response to exogenous abscisic acid and methyl jasmonate （MeJA） treatments, respectively. Later, the promoter regions of the PS gene in tomato （Solanum lycopersicum L. cv. Castlemart）, pepper （Capsicum annuum） and potato （Solanum tuberosum） were isolated and an in silico analysis of the SIPS promoter revealed an over-representation of stress- and MeJA-responsive motifs. A subsequent 5＇ deletion analysis of the SIPS promoter fused to the/^-glucuronidase reporter （GUS） gene showed that the -221 to ＋40 bp proximal SIPS promoter region was sufficient to direct the stigma, vascular bundle-specific and MeJA-responsive expression of GUS in transgenic tobacco plants. Important ***-specific, light- and MeJA-responsive cis-elements were also present in this region. These findings provide relevant information regarding the transcriptional regulation mechanisms of the SIPS promoter operating in transgenic tobacco plants. They also suggest that its Ussue-specificity and inducible nature could have wide applicability in plant biotechnology.

关键词： cis-regulatory elements flower specific jasmonic acid methyl jasmonate promoter analysis prosystemin wound-responsive genes.

TSKArNA-norm Adaption Based NLMS with Optimized Fractional Order PId Controller Gains for Voltage Power Quality

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Chinese Journal of Electrical Engineering 2023年第3期9卷 84-98页

作者： Prashant Kumar Sabha raj Arya Khyati d.Mistry department of Electrical Engineering Sardar Vallabhbhai National Institute of TechnologySurat 395007India

The operation of a dynamic voltage restorer(dVr)is studied using a three-phase voltage source converter(VSC)-based topology to alleviate voltage anomalies from a polluted supply *** control algorithm used included two *** first is an adaptive Takagi-Sugeno-Kang(TSK)-based adaptive reweighted L1 norm adaption-based normalized least mean square(TSK-ArNA-NLMS)unit,which is proposed for the extraction of fundamental active and reactive components from the non-ideal supply and is further employed to generate the load reference voltage and switching pulse for the *** step size was evaluated using the proposed TSK-ArNA-NLMS controller,and the TSK unit was optimized by integration with the marine predator algorithm(MPA)for a faster convergence *** second,a fractional-order PId controller(FOPId),was employed for AC-and dC-link voltage regulation and was approximated using the Oustaloup *** FOPId()PI dγμprovides more freedom for tuning the settling time,rise time,and *** FOPId coefficients(Ki,Kd,Kp,γ,andμ)were optimized by employing an advanced ant lion optimization(ALO)meta-heuristics technique to minimize the performance index,namely,the integral time absolute error(ITAE)and assess the accuracy of *** dVr performance was validated under dynamic-and steady-state conditions.

关键词： Takagi-Sugeno-Kang(TSK) ArNA-NLMS FOPId-ALO unbalances gain optimization approximation Oustaloup technique

Evidence for a female-produced, long range pheromone of Anoplophora glabripennis （Coleoptera Cerambycidae）

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Insect Science 2012年第3期19卷 355-371页

作者： Jacob d.Wickham Zhichun Xu Stephen A.Teale department of Environmental and Forest Biology SUNY College of Environmental Science and Forestry1 Forestry DriveSyracuseN Y 13210USA College of Forest resources Beijing Forestry University Key Lab of Analytical Chemistry for Living Biosystems Institute of ChemistryChinese Academy of SciencesBeijingChina

Volatiles from female Asian longhorned beetle （ ALB ）, Anoplophora glabripenhis, were evaluated as candidate sex pheromone components. Previous studies on ALB have revealed several antennally active compounds from virgin females; however the origins and activity of these compounds were not apparent and require further investigation. We tested the hypothesis that one or more of the ALB contact sex pheromones is a precursor that undergoes abiotic oxidation to yield volatile pheromone components, and evaluated the activity of these compounds using laboratory and field bioassays. Gas chromatogra- phy coupled electroantennography detection （GC-EAd） analysis indicated the presence of three antennally active aldehydes （heptanal, nonanal, and hexadecanal） in female cuticular extracts exposed to ozone or UV and visible light. In laboratory bioassays using a Y-tube olfactometer, males were preferentially attracted to ozonized female body washes over crude body washes. Similarly, synthetic formulations of these compounds were preferred over controls in the olfactometer. Field trapping experiments conducted from 2006 to 2008 in Ningxia, China showed that synthetic lures of the three aldehydes formulated in a ratio simulating that of virgin females attracted more beetles compared to controls, and that combinations of these aldehydes, linalool oxide, and host kairomones captured more beetles than controls, and captured significantly more males.

关键词： Anoplophora glabripennis Asian longhorned beetle cuticular hydrocarbons,kairomone oxidation pheromone

Joins of 1-Planar Graphs

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Acta Mathematica Sinica,English Series 2014年第11期30卷 1867-1876页

作者： Július CZAP dvid HUdK Tom MAdArAS department of Applied Mathematics and Business Informatics Faculty of Economics Technical University of KoiceNěmcovej 32040 01 KoiceSlovakia VSL Software a.s.Lomen 8040 01 KoiceSlovakia Institute of Mathematics Faculty of SciencePavol Jozef afrik University Jesenn 5040 01 KoiceSlovakia

A graph is called 1-planar if it admits a drawing in the plane such that each edge is crossed at most *** this paper,we study 1-planar graph *** prove that the join G ＋ H is 1-planar if and only if the pair [G,H] is subgraph-majorized by one of pairs [C3 ∪ C3,C3],[C4,C4],[C4,C3],[K2,1,1,P3] in the case when both elements of the graph join have at least three *** one element has at most two vertices,then we give several necessary/sufficient conditions for the bigger element.

关键词： 1-Planar graph join product

Wenchuan Post-earthquake reconstruction by Utilizing Composite Tubular Construction and FrP retrofitting Technology

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四川大学学报（工程科学版） 2009年第3期41卷 231-247页

作者： ZHAO X L AL-MAHAIdI r dept. of Civil Eng. Monash Univ. Clayton VIC 3800 Australia

This paper presents two possible construction methods that could be adopted in the Wenchuan post-earthquake *** is the composite tubular construction and the other is FrP(Fibre reinforced Polymer) retrofitting *** background of these two methods,the existing research and relevance to Whenchuan post-earthquake reconstruction are described.

关键词：抗振结构建筑结构建筑物 FrP 地震重建