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Assessing the bird guild patterns in heterogeneous land use types around Jammu,Jammu and Kashmir,India

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Ecological Processes 2020年第1期9卷 564-578页

作者： asha Sohil Neeraj Sharma Institute of Mountain Environment University of JammuJammuIndia

Land-use sprawl in the Himalayas has caused the conversion of natural habitat into human-modified habitats,thus degrading ecosystem *** of birds to changing physical environment can be well understood by analyzing their habitat preferences,and foraging dynamics explored to a limited extent in the Himalayan region,as *** achieve a comprehensive understanding of avian guild structure,we used multivariate statistical techniques to classify bird species according to their similarities in foraging patterns and habitat *** based on habitat and diet affinities accounted for rich avian diversity with a total of 208 bird species(about 15%of country’s avifauna)recorded from six different sites during 1 year *** pair-group average cluster analysis performed on the families revealed ten feeding and fifteen habitat guilds among 63 bird families *** forests harbored more species followed by urban forests and agricultural *** and omnivorous outnumbered other feeding guilds in the study *** assemblages were richer in protected areas and semidisturbed landscapes and did not show significant variation between the *** of the study revealed that different functional groups of birds behaved differently,primarily induced by choice of *** site heterogeneity favored avifaunal persistence by providing favorable foraging,roosting,and nesting opportunities to *** of avian guilds indicated level of intactness and ecological integrity of ecosystems *** outcome thus sets the background for long-term analysis of bird-habitat relationship and their foraging *** study has the relevance for decision-makers to integrate avian guild structure as an essential ingredient in formulating conservation strategies.

关键词： Avian guild Food resource utilization Habitat preference Heterogeneous landscape Eutrophic wetland Protected area

Heterocyclic compounds as key structures for the interaction with old and new targets in Alzheimer＇s disease therapy

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Neural Regeneration Research 2017年第8期12卷 1256-1261页

作者： asha Hiremathad Luca Piemontese Centre for Nano and Material Sciences Jain University Jain Global Campus Kanakapura Ramanagaram Bangalore India Dipartimento di Farmacia-Scienze del Farmaco Universitfl degli Studi di Bari "Aldo Moro" Bari Italy

Nowadays, Alzheimer＇s disease（AD） is widely recognized as a real social problem. In fact, only five drugs are FDA approved for the therapy of this widespread neurodegenerative disease, but with low results so far. Three of them（rivastigmine, donepezil and galantamine） are acetylcholinesterase inhibitors, memantine is a N-methyl-D-aspartate receptor antagonist, whereas the fifth formulation is a combination of donepezil with memantine. The prevention and treatment of AD is the new challenge for pharmaceutical industry, as well as for public institutions, physicians, patients, and their families. The discovery of a new and safe way to cure this neurodegenerative disease is urgent and should not be delayed further. Because of the multiple origin of this pathology, a multi-target strategy is currently strongly pursued by researchers. In this review, we have discussed new structures designed to better the activity on the classical AD targets. We have also examined old and new potential drugs that could prove useful future for the therapy of the pathology by acting on innovative, not usual, and not yet fully explored targets like peroxisome proliferator-activated receptor（PPARs）.

关键词： Alzheimer's disease multi-target strategy peroxisome proliferator-activated receptors heterocycliccompounds neurodegenerative diseases

新型Ti/Zr-SnO_(2)/β-PbO_(2)电极的构筑及高效降解亚甲基蓝

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环境科学与技术 2024年第4期47卷 1-8页

作者：尔古阿沙高官金刘强兵蒋新宇钒钛资源综合利用国家重点实验室四川攀枝花617000 中南大学化学化工学院湖南长沙410083

该文采用热分解法先制备Zr-SnO_(2)中间层,再电沉积β-PbO_(2)层,成功制备了Ti/Zr-SnO_(2)/β-PbO_(2)电极。利用扫描电镜(SEM)、能量散射谱(EDS)、X射线衍射(XRD)、X射线光电子能谱(XPS)技术对电极形貌、晶体结构、元素组成等进行了分... 详细信息

该文采用热分解法先制备Zr-SnO_(2)中间层,再电沉积β-PbO_(2)层,成功制备了Ti/Zr-SnO_(2)/β-PbO_(2)电极。利用扫描电镜(SEM)、能量散射谱(EDS)、X射线衍射(XRD)、X射线光电子能谱(XPS)技术对电极形貌、晶体结构、元素组成等进行了分析。通过循环伏安法(CV)、电化学交流阻抗法(EIS)、加速寿命实验等测试其电化学性能,考察其电催化降解亚甲基蓝(Methylene Blue,MB)活性,优化电流密度和初始MB浓度。结果表明:Ti/Zr-SnO_(2)/β-PbO_(2)电极的表面为致密四棱锥结构,形成了非化学计量比的β-PbO_(2);与传统的Ti/β-PbO_(2)电极相比,Zr-SnO_(2)中间层可有效提高钛基涂层电极的析氧过电位;修饰电极阻抗为87.64Ω/cm2,电极加速寿命为439 min,是Ti/β-PbO_(2)电极的219.5倍,是Ti/SnO_(2)/β-PbO_(2)电极的1.71倍;在50 mA/cm2的电流密度下降解初始浓度为50.00 mg/L的MB时,180 min内MB去除率可达97%。

关键词：电催化降解 Ti/Zr-SnO_(2)/β-PbO_(2)电极亚甲基蓝钛阳极

Nature-inspired hybrid deep learning for race detection by face shape features

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International Journal of Intelligent Computing and Cybernetics 2020年第3期13卷 365-388页

作者： asha Sukumaran Thomas Brindha Department of Computer Science and Engineering Noorul Islam Centre for Higher EducationKumaracoilIndia Department of Information Technology Noorul Islam Centre for Higher EducationKumaracoilIndia

Purpose-The humans are gifted with the potential of recognizing others by their uniqueness,in addition with more other demographic characteristics such as ethnicity(or race),gender and age,*** the decades,a vast count of researchers had undergone in the field of psychological,biological and cognitive sciences to explore how the human brain characterizes,perceives and memorizes ***,certain computational advancements have been developed to accomplish several insights into this ***/methodology/approach-This paper intends to propose a new race detection model using face shape *** proposed model includes two key phases,namely.(a)feature extraction(b)*** feature extraction is the initial stage,where the face color and shape based features get ***,maximally stable extremal regions(MSER)and speeded-up robust transform(SURF)are extracted under shape features and dense color feature are extracted as color ***,the extracted features are huge in dimensions;they are alleviated under principle component analysis(PCA)approach,which is the strongest model for solving“curse of dimensionality”.Then,the dimensional reduced features are subjected to deep belief neural network(DBN),where the race gets ***,to make the proposed framework more effective with respect to prediction,the weight of DBNis fine tuned with a new hybrid algorithm referred as lion mutated and updated dragon algorithm(LMUDA),which is the conceptual hybridization of lion algorithm(LA)and dragonfly algorithm(DA).Findings-The performance of proposed work is compared over other state-of-the-art models in terms of accuracy and error ***,LMUDA attains high accuracy at 100th iteration with 90%of training,which is 11.1,8.8,5.5 and 3.3%better than the performance when learning percentage(LP)550%,60%,70%,and 80%,*** particularly,the performance of proposed DBNþLMUDAis 22.2,12.5 and 33.3%better than the trad

关键词： Facial race detection Color dense features DBN Optimization LMUDA

Fe3O4 nanoparticles impregnated eggshell as a novel catalyst for enhanced biodiesel production

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中国化学工程学报：英文版 2019年第11期27卷 2835-2843页

作者： Ch.Chingakham asha David V.Sajith School of Nano Science and Technology National Institute of Technology CalicutIndia Malabar Christian College CalicutIndia

Biodiesel is a green fuel which can replace diesel while addressing various issues such as scarcity of hydrocarbon fuels and environmental pollution to an extent. The high production cost of biodiesel and the recovery of the catalyst after the transesterification process are the major challenges to be addressed in biodiesel production. In the present work, a cheap and promising solid base oxide catalyst was synthesized from chicken eggshell by calcination at 900 ℃ forming catalyst eggshells(CES) and was impregnated with the nanomagnetic material(Fe3O4) to obtain Fe3O4 loaded catalytic eggshell(CES–Fe3O4). Fe3O4 nanomaterials were synthesized by co-precipitation method and were loaded in catalytic eggshell by sonication, for better recovery of the catalyst after transesterification process. CES–Fe3O4 material was characterized by Thermogravimetric analysis, X-ray diffraction, Fourier transform infrared spectroscopy, a vibrating-sample magnetometer, Brunauer-Emmett-Teller, Dynamic light scattering, and Scanning electron microscopy. Biodiesel was synthesized by transesterification of Pongamia pinnata raw oil with 1:12 oil to methanol molar ratio and 2 wt% catalyst loading for 2 h at a temperature of 65 ℃ and yields were compared. The reusability of the catalyst was studied by the transesterification of the raw oil and its catalytic activity was found to be retained up to 7 cycles with a yield of 98%.

关键词： Catalyst Biodiesel Nanoparticles Fe3O4 Impregnation Transesterification

DERNNet:Dual Encoding Recurrent Neural Network Based Secure Optimal Routing in WSN

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Computer Systems Science & Engineering 2023年第5期45卷 1375-1392页

作者： A.Venkatesh S.asha School of Computer Science and Engineering Vellore Institute of TechnologyChennaiIndia Centre for Cyber Physical Systems&School of Computer Science and Engineering Vellore Institute of TechnologyChennaiIndia

A Wireless Sensor Network(WSN)is constructed with numerous sensors over geographical *** basic challenge experienced while designing WSN is in increasing the network lifetime and use of low *** sensor nodes are resource constrained in nature,novel techniques are essential to improve lifetime of nodes in *** energy is considered as an important resource for sensor node which are battery powered *** WSN,energy is consumed mainly while data is being transferred among nodes in the *** research works are carried out focusing on preserving energy of nodes in the network and made network to live ***,this network is threatened by attacks like vampire attack where the network is loaded by fake ***,Dual Encoding Recurrent Neural network(DERNNet)is proposed for classifying the vampire nodes s node in the ***,the Grey Wolf Optimization(GWO)algorithm helps for transferring the data by determining best solutions to optimally select the aggregation points;thereby maximizing battery/lifetime of the network *** proposed method is evaluated with three standard approaches namely Knowledge and Intrusion Detection based Secure Atom Search Routing(KIDSASR),Risk-aware Reputation-based Trust(RaRTrust)model and Activation Function-based Trusted Neighbor Selection(AF-TNS)in terms of various *** existing methods may lead to wastage of energy due to vampire attack,which further reduce the lifetime and increase average energy consumed in the ***,the proposed DERNNet method achieves 31.4%of routing overhead,23%of end-to-end delay,78.6%of energy efficiency,94.8%of throughput,28.2%of average latency,92.4%of packet delivery ratio,85.2%of network lifetime,and 94.3%of classification accuracy.

关键词： Wireless sensor network vampire nodes lifetime optimal routing energy encryption decryption trust value optimization

Lygodium flexuosum extract down regulates the expression of proinflammatory cytokines in CCl_4 -induced hepatotoxicity

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Asian Pacific Journal of Tropical Medicine 2012年第6期5卷 421-426页

作者： Pallara Janardhanan Wills Velikkakathu Vasumathi asha Plant Based Bioactives and Disease Biology Laboratory Rajiv Gandhi Centre for BiotechnologyThiruvananthapuramKerala 695014India MIMS Research Foundation Malabar Institute of Medical SciencesCalicut-673007KeralaIndia

Objective:To examine the downregulalion of proinflammatory cytokines in a time dependant manner on carbon tetrachloride induced toxicity in experimental ***:CCl4（150μL/100 g） was dissolved in com oil（1:1 v/v%） and administered orally,GroupⅠwas treated as normal control and received corn oil on 8th ***Ⅱwas toxic control and was given a single dose of CCl4 on 8th ***Ⅲwas treated with Lygodium flexuosum（***） n-hexane extract（200 mg/kg） for 8 days and on 8th day a single dose of CCl4 was ***Ⅳ（negative contnil） received *** n-hexane extract（200 mg/kg） alone for 8 ***:Treatment with n-hexane extract prior to the administration of CCl4 significantly prevented an increase in serum AST,ALT,LDH activity and lipid peroxidation and prevented the depletion of glutathione （GSH）.Rats treated with *** had reduced mRNA levels of TGF-β1,TNF-αand IL-1βgenes in liver of CCl4 intoxicated rats when compared to CCl4 control as evidenced by RT-PCR. Conclusions:The data suggest that ***,a widely available fem,significantly reduces CCl4 induced acute hepatotoxicily by down-regulating the expression of pro-inflammatory cytokines in rats.

关键词： Lygodium flexuosum Carbon tetrachloride mRNA TGF-β1 TNF-α IL-1β

Reflection and transmission of elastic waves at an interface between two micropolar piezoelectric half-spaces

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Journal of Ocean Engineering and Science 2019年第3期4卷 227-237页

作者： Baljeet Singh asha Sangwan Jagdish Singh Department of Mathematics Post Graduate Government CollegeSector 11Chandigarh 160011India Department of Mathematics Government CollegeSamplaRohtak 124001HaryanaIndia Department of Mathematics Maharshi Dayanand UniversityRohtak 124001HaryanaIndia

In the present paper,we consider a problem of reflection and transmission of plane waves at an interface between two different transversely isotropic micropolar piezoelectric *** plane wave solution of governing equations for micropolar piezoelectric medium indicates the propagation of three coupled plane *** incident plane wave at an interface between two dissimilar half-spaces generates three reflected and three transmitted *** relations between amplitude ratios of reflected and transmitted waves are derived which,in general,depend on material parameters and angle of *** explicit expressions for energy ratios of reflected and transmitted waves are also *** relevant material parameters,the results are illustrated graphically to show the micropolar piezoelectric effects on variations of amplitude ratios and the square root of energy ratios against the angle of incidence.

关键词： Plane waves Micropolar piezoelectricity Reflection and transmission Amplitude ratios Energy ratios

Bioprospection of marine actinomycetes: recent advances,challenges and future perspectives

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Acta Oceanologica Sinica 2019年第6期38卷 1-17页

作者： Swati Sharma Abhay B. Fulke asha Chaubey CSIR-Indian Institute of Integrative Medicine (CSIR-IIIM) CSIR-Innovation CentreMumbai 400053India Regional Centre CSIR-National Institute of Oceanography (CSIR-NIO)Mumbai 400053India CSIR-Indian Institute of Integrative Medicine Jammu180001India

In exploring new sources for economically important products, marine environment draws particular attention because of its remarkable diversity and extreme conditions;it is known to produce metabolic products of great value. It represents untapped source for the discovery of novel secondary metabolites with varying potential such as antibiotic, anti-tumor, antifouling and cytotoxic properties. Marine actinomycetes distributed throughout the marine environment from shallow to deep sea sediments have proved to be a finest source for this discovery. Secondary metabolites derived from marine actinomycetes have proved their worth in industries based on the research on their properties and wide range applications. Spotlight of the review is range of marine based actinomycetes products and significant research in this field. This shows the capability of marine actinomycetes as bioactive metabolite producers. Additionally, the present review addresses some effective and novel approaches of procuring marine microbial compounds utilizing the latest screening strategies of drug discovery from which traditional resources such as marine actinobacteria has decreased due to declining yields. The aim is in the context of promoting fruitful and profitable results in the near future. The recent surfacing of new technologies for bioprospection of marine actinomycetes are very promising, resulting in high quality value added products, and will be de?ning a new era for bioactive compounds with medical and biotechnological applications.

关键词： marine actinomycetes bioprospection commercial use bioactive compounds genome mining