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Geoscience Frontiers 2013年第1期4卷 113-122页

作者： P.Pratheesh V.Prasannakumar K.r.Praveen Department of Geology University of KeralaKariavattom Campus.Thiruvananthapuram 695 581KeralaIndia

The Moyar shear Zone （MsZ） of the south Indian granulite terrain hosts a prominent syenite pluton （-560 Ma） and associated NW-sE to NE-sW trending mafic dyke swarm （-65 Ma and 95 Ma）. Preliminary magnetic fabric studies in the mafic dykes, using Anisotropy of Magnetic susceptibly （AMs） studies at low-field, indicate successive emplacement and variable magma flow direction. Magnetic lineation and foliation in these dykes are identical to the mesoscopic fabrics in MsZ mylonites, indicating shear zone guided emplacement. spatial distribution of magnetic lineation in the dykes suggests a common conduit from which the source magma has been migrated. The magnetic foliation trajectories have a sigmoidal shape to the north of the pluton and curve into the MsZ suggesting dextral sense of shear. Identical fabric conditions for magnetic fabrics in the syenite pluton and measured field fabrics in mylonite indicate syntectonic emplacement along the Proterozoic crustal scale dextral shear zone with repeated reactivation history.

关键词： Magnetic fabrics Moyar shear Zone syenite pluton Mafic dykes Tectonic evolution

Potential habitat modeling for reintroduction of three native plant species in central Iran

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Journal of Arid Land 2015年第3期7卷 381-390页

作者： Elham G ArDEsTANI Mostafa TArKEsH Mehdi BAssIrI mohammad r VAHABI Department of Natural resources Isfahan University of Technology

Potential habitat modeling of endemic species is an appropriate method to maintain biodiversity,ecosystem function and rehabilitation of rangeland *** caragana,*** and *** are endemic in Iran＇s rangelands and some neighboring *** three native species could endure environmental stresses due to their distinctive ecophysiological *** play important roles in sustainable pastures production,recreation and *** suffer severe threat from many factors including;grazing,agriculture and invasive exotic *** analyzed the potential habitat of three native plant species in central Iran basing on the grid map with the resolution of *** used inventory records from field surveys,herbarium collections and 22 environmental factors to explore the environmental influences on given species distribution by Maximum entropy（Maxent） *** is a species distribution model that uses species occurrence and environmental data for predicting potential *** results of our study indicated species occurrence has strong correlation with environmental factors such as mean temperature of wettest season,elevation and precipitation of coldest *** evaluated the model accuracy by AUC（area under the receiver operating characteristic curve） based on an independent test data *** values indicated the high power of Maxent to create potential habitat map（***=0.988,***=0.927,***=0.923）.It is important to consider that AUC values tend to be lower for species that have broad distribution scope,such as *** *** suitable potential habitat distributions of the three species were predicted in the western and southwestern parts of rangelands in Isfahan *** comparisons of the actual distribution map of the three species with produced Maxent maps represent a good *** general,the model demonstrated that the occurrence of the given species

关键词： Astragalus caragana Astragalus cyclophyllon Astragalus podolobus environmental factors Maxent

Visual ＂playback＂ of colorful signals in the field supports sensory drive for signal detectability

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Current Zoology 2018年第4期64卷 493-498页

作者： Alex r. GUNDErsON Leo J. FLEIsHMAN Manuel LEAL Department of Integrative Biology University of California Berkeley CA 94720 USA Department of Biology Union College Schenectady NY 12308 USA Division of Biological sciences University of Missouri 105 Tucker Hall Columbia MO 65211 USA

Colorful visual signals are important systems for investigating the effects of signaling environ ments and receiver physiology on signal evolution as predicted by the sensory drive hypothesis. support for the sensory drive hypothesis on color signal evolution is mostly based on document ing correlations between the properties of signals and habitat conditions under which the signals are given （i.e., a correlational approach） and less commonly on the use of mathematical models that integrate representations of visual environments, signal properties, and sensory systems （i.e., a functional approach）. Here, we used an experimental approach in the field to evaluate signal efficacy of colorful lizard throat fans called dewlaps that show geographic variation in the lizard Anolis cristatellus. We used a remote controlled apparatus to display ＂fake dewlaps＂ to wild lizards to test for adaptive divergence in dewlap brightness （i.e., perceived intensity） among populations in situ. We found evidence of local adaptation in dewlap brightness consistent with the sensory drive hypothesis. specifically, dewlaps that had the brightness characteristics of local lizards were more likely to be detected than those with the brightness characteristics of nonlocal lizards. Our findings indicate that simplified mathematical representations of visual environments may allow robust estimates of relative detectability or conspicuousness in natural habitats. We have shown the feasibility of evaluating color signal efficacy experimentally under natural conditions and dem onstrate the potential advantages of presenting isolated components of signals to an intended re ceiver to measure their contribution to signal function.

关键词： Anolis color signal sensory drive signal evolution

Photonics immunotherapy-A novel strategy for cancer treatment

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Journal of Innovative Optical Health sciences 2016年第1期9卷 1-11页

作者： Feifan Zhou robert E.Nordquist Wei r.Chen Biophotonics research Laboratory Center for Interdisciplinary Biomedical Education research College of Mathematics and science University of Central Oklahoma Edmond Oklahoma 73034 USA Immunophotonics Inc. St.LouisMissouri 63108USA

Photonics immunotherapy is a novel cancer treatment strategy that combines local phototherapy and *** is a noninvasive or minimally invasive therapeutic strategy for local treatment of cancer,which can destroy tumor cells and release tumor antigens,inducing an in situ antitumor immune ***,including the use of antibodies,vaccines,immunoadjuvants and cytokines,when combined with phototherapy,could bring a synergistic effect to stimulate a host immune response that effectuates a long-term antitumor *** review will focus on the development of photonics immunotherapy and its systemic antitumor immunological effects.

关键词： Photonics immunotherapy cancer phototherapy immunotherapy immune response

Using dummy data for rFID tag and reader authentication

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Digital Communications and Networks 2022年第5期8卷 804-813页

作者： Baha’A.Alsaify Dale r.Thompson Abdallah Alma'aitah Jia Di Department of Network Engineering and security Jordan University of Science and TechnologyIrbid21163Jordan Computer science and Computer Engineering Department University of ArkansasFayetteville72701ARUSA

radio-Frequency IDentification(rFID)technology is an essential enabler of a multitude of intelligent *** robust authentication of rFID system components is critical in providing trustworthy data delivery from/to *** this paper,we propose an authentication protocol based on monitoring the transmissions between readers and tags in the *** proposed authentication scheme is based on injecting decoys within the exchanged communications(between rFID readers and tags)and is used in the authentication ***,the proposed authentication scheme is mathematically modeled and validated using extensive *** simulations results show that the proposed scheme provides a 100%confidence level in the authentication of tags and detection of compromised readers.

关键词： rFID Authentication Dummy data security Decoys

Development and testing of a detailed kinetic mechanism of natural gas combustion in internal combustion engine

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Journal of Natural Gas Chemistry 2010年第2期19卷 97-106页

作者： M.Mansha A.r.saleemi Badar M.Ghauri Naveed ramzan Department of Chemical Engineering University of Engineering & TechnologyLahore 5457Pakistan Institute of space Technology Islamabad 44000Pakistan

A detailed chemical mechanism to describe the combustion of natural gas in internal combustion （IC） engine has been developed,which is consisting of 233 reversible reactions and 79 *** mechanism accounts for the oxidation of methane,ethane,propane and *** has been tested using IC engine model of CHEMKIN 4.1.1 and experimental *** performance of the proposed mechanism was evaluated at various equivalence ratios （φ=0.6 to φ=1.3）,initial reactor conditions （Tini=500 to 3500 ℃; Pini=1.0 to 10 atm） and engine speed （2000-7000 rpm）.The proposed kinetic mechanism shows good concordances with GrI3.0 mechanism especially in the prediction of temperature,pressure and major product species （H2O,CO2） profiles at stoichiometric conditions （φ=1.0）.The experimental results of measured cylinder pressure,species fractions were also in agreement with simulation results derived from the proposed kinetic *** proposed mechanism successfully predicts the formation of gaseous pollutants （CO,NO,NO2,NH3） in the engine *** there are some discrepancies among each simulation profile,the proposed detailed mechanism is good to represent the combustion of natural gas in IC engine.

关键词： natural gas detailed mechanism equivalence ratio pollutants emission combustion

Ignition and combustion of pyrotechnics at low pressures and at temperature extremes

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Defence Technology（防务技术） 2017年第3期13卷 119-126页

作者： Clive Woodley r.Claridge N.Johnson A.Jones QinetiQ MOD Fort Halstead

rapid and effective ignition of pyrotechnic countermeasure decoy flares is vitally important to the safety of expensive military platforms such as aircraft. Qineti Q is conducting experimental and theoretical research into pyrotechnic countermeasure decoy flares. A key part of this work is the development and application of improved models to increase the understanding of the ignition processes occurring for these flares. These models have been implemented in a two-dimensional computational model and details are described in this paper. Previous work has conducted experiments and validated the computational model at ambient temperature and pressure. More recently the computational model has been validated at pressures down to that equivalent to 40,000 feet but at ambient temperature(~290 K).This paper describes further experimental work in which the ignition delays of the priming material in inert countermeasure decoy flares were determined for pressures down to 40,000 feet and at temperature extremes of -40℃ and 100℃ Also included in this paper is a comparison of the measured and predicted ignition delays at low pressures and temperature extremes. The agreement between the predicted and measured ignition delays is acceptable.

关键词：压力下降极端温度点火过程烟火二维计算模型燃烧实验工作点火延迟

Flow Management Mechanism in software-Defined Network

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Computers, Materials & Continua 2022年第1期70卷 1437-1459页

作者： Eugene Tan Yung-Wey Chong mohammed F.r.Anbar National Advanced IPv6 Centre Universiti Sains MalaysiaUSMPenangMalaysia

software-defined networking(sDN)is a paradigm shift in modern ***,centralised controller architecture in sDNimposed flow setup overhead issue as the control plane handles all flows regardless of size and *** frameworks strictly reduce control plane overhead and it does not focus on rule placement of the flows ***,existing frameworks do not focus on managing elephant flows like ***,the proposed mechanism will use the flow statistics gathering method such as random packet sampling to determine elephant flow and microflow via a predefined *** mechanism will ensure that the control plane works at an optimum workload because the controller only manages elephant flows via reactive routing and rule placement *** routing has reduced link bandwidth usage below the pre-defined ***,rule placement has increased average throughput and total transfer to 238%.Meanwhile,the data plane switches will be able to forward microflows via multipath wildcard routing without invoking controller in greater responding time by 85 ms faster in two Transmission Control Protocol(TCP)traffic and achieved 11%and 12%higher total transfer size and throughput ***,the controller’s workload reduced significantly to 48%in two TCP traffic.

关键词： software-defined network controller flow management

Learning two-phase microstructure evolution using neural operators and autoencoder architectures

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npj Computational Materials 2022年第1期8卷 1804-1816页

作者： Vivek Oommen Khemraj shukla somdatta Goswami rémi Dingreville George Em Karniadakis school of Engineering Brown UniversityProvidenceRIUSA Division of Applied Mathematics Brown UniversityProvidenceRIUSA Center for Integrated Nanotechnologies Sandia National LaboratoriesAlbuquerqueNM87185USA

Phase-field modeling is an effective but computationally expensive method for capturing the mesoscale morphological and microstructure evolution in ***,fast and generalizable surrogate models are needed to alleviate the cost of computationally taxing processes such as in optimization and design of *** intrinsic discontinuous nature of the physical phenomena incurred by the presence of sharp phase boundaries makes the training of the surrogate model *** develop a framework that integrates a convolutional autoencoder architecture with a deep neural operator(DeepONet)to learn the dynamic evolution of a two-phase mixture and accelerate time-to-solution in predicting the microstructure *** utilize the convolutional autoencoder to provide a compact representation of the microstructure data in a low-dimensional latent *** DeepONet is trained in the latent space,it can be used to replace the high-fidelity phase-field numerical solver in interpolation tasks or to accelerate the numerical solver in extrapolation tasks.

关键词： materials phase operators

n-Butane Oxidation over γ-Al_2O_3 supported Vanadium Phosphate Catalysts

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Journal of Natural Gas Chemistry 2007年第3期16卷 266-272页

作者： Y.H.Taufiq-Yap L.K.Leong r.Irmawati Putra Laboratory for Catalysis science and Technology Department of ChemistryFaculty of ScienceUniversiti Putra Malaysia43400 UPM SerdangSelangorMalaysia Department of Bioscience and Chemistry Faculty of Engineering and ScienceUniversiti Tunku Abdul RahmanJalan Genting Kelang53300 SetapakKuala LumpurMalaysia

Four vanadium phosphate catalysts supported on γ-A1203 （20 wt%） were synthesized via wetness impregnation of VOHPO4.0.5H2O precursor and calcined for different durations （6, 10, 30 and 75 h） at 673 K in a reaction flow of n-butane/air mixture. The samples calcined for 6 and 10 h produced only a single phase of （VO）2P2O7. However, the VOPO4 phase （β-VOPO4） was detected and became more prominent with only a minor pyrophosphate peaks were found after 30 h of calcination. All these pyrophosphate peaks disappeared after 75 h of calcination. The formation of V^5＋ phase was also observed in the sEM micrographs. The redox properties and the nature of oxidants of the catalysts employed in this study were investigated by H2-TPr analysis. selective oxidation of n-butane to maleic anhydride （MA） over these catalysts shows that the percentage of n-butane conversion decreases with the transformation of the catalysts from V^4＋ to V^5＋ phases. An appropriate ratio of V^5＋/V^4＋ can enhance the performance of the VPO catalyst. However, a higher amount of V^5＋ and its associated oxygen species are responsible to promote the MA selectivity.

关键词： n-butane oxidation VPO alumina maleic anhydride