检索结果-南通市图书馆

Evaluation of antileishmanial,antibacterial and brine shrimp cytotoxic potential of crude methanolic extract of Herb Ocimum basilicum(Lamiacea)

引用

Journal of Traditional Chinese Medicine 2015年第3期35卷 316-322页

作者： Imran khan Kafeel Ahmad Ali Talha Khalil Jangrez khan Yusra Ali khan muhammad Shahab Saqib muhammad Naveed Umar Hilal Ahmad Department of Biotechnology Quaid-i-Azam University Centre of Biotechnology and Microbiology University of Peshawar Department of Biochemistry Quaid-i-Azam University Islamabad Department of Chemistry University of Malakand Institute of Biotechnology and Genetic Engineering Agriculture UniversityPeshawar

OBJECTIVE:To collect and screen for ethnopharmacological properties(antileishmanial,antibacterial and brine lethality assays) of medicinal plant Ocimum basilicum from Peshawar region(34.008 latitude and 71.57 altitudes).METHODS:In the present study a general antileishmanial activity against Leishmania tropica strain was carried *** antibacterial potential of the plant was performed against 06 gram positive and 06 gram negative *** shrimp cytotoxicity assay at different concentrations were ***:The anti-promastigotes profile of the plant showed good antileishmanial activity exhibited LC_(50) value 21.67 μg/*** result for gram positive antibacterial activity revealed that the *** leaves extract possesses significant inhibitory activity at highest two concentrations ranging from20.66 ± 0.31 to 31.86 ± 0.80 for Clostridium perfringens type C and Bacillus subtitilis,respectively,as compared to the gentamycin(27.36 ± 0.55 and21.80 ± 0.72,respectively).For gram negative bacteria good activity was observed.A highest zone of inhibition was recorded for Pseudomonas aeroginosa(28.83 ± 0.28) atthe highest concentration(10 mg/mL).The LC_(50) value obtained for brine shrimp lethality assay was 91.56 μg/***:The herb basil possesses effective cidal activities which make this plant a good candidate for the isolation of antiprotozoal and antibacterial compounds which may lead to the development of novel drug.

关键词： Ocimum basilicum Cytotoxicity tests,immunologic Anti-bacterial agents Antileishmanial activity

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Improved Sequencing Heuristic DSDV Protocol Using Nomadic Mobility Model for FANETS

引用

Computers, Materials & Continua 2022年第2期70卷 3653-3666页

作者： Inam Ullah khan muhammad Abul Hassan muhammad Fayaz Jeonghwan Gwak muhammad Adnan Aziz Department of Electronic Engineering Isra University(SEAS)Islamabad44000Pakistan Department of Computing and Technology Abasyn University Peshawar25000Pakistan Deparment of Computer Engineering Jeju National UniversityJejuKorea Department of Software Korea National University of TransportationChungju27469Korea Department of Biomedical Engineering Korea National University of TransportationChungju27469Korea Department of AI Robotics Engineering Korea National University of TransportationChungju27469Korea Department of IT&Energy Convergence(BK21 FOUR) Korea National University of TransportationChungju27469Korea

Most interesting area is the growing demand of flying-IoT mergers with smart ***,aerial vehicles,especially unmanned aerial vehicles(UAVs),have limited capabilities for maintaining node energy *** order to communicate effectively,IoT is a key element for smart *** improving network performance,routing protocols can be deployed in flying-IoT to improve latency,packet drop rate,packet delivery,power utilization,and average-end-to-end ***,in literature,proposed techniques are verymuch complex which cannot be easily implemented in realworld *** issue leads to the development of lightweight energyefficient routing in flying-IoT *** paper addresses the energy conservation problem in *** paper presents a novel approach for the internet of flying vehicles using DSDV ***-DSDV gives the notion of bellman-ford algorithm consisting of routing updates,information broadcasting,and stale *** shows optimal results in comparison with other contemporary routing *** mobility model is utilized in the scenario of flying networks to check the performance of routing protocols.

关键词： Flying-IoT DSR smart cities UAV’s FANETS

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Analysis of LDPC Code in Hybrid Communication Systems

引用

Computers, Materials & Continua 2023年第1期74卷 769-781页

作者： Hasnain Kashif muhammad Nasir khan Zubair Nawaz Department of Electrical Engineering The University of LahoreLahore54000Pakistan Department of Data Science University of PunjabLahore54000Pakistan

Free-space optical(FSO)communication is of supreme importance for designing next-generation *** the past decades,the radio frequency(RF)spectrum has been the main topic of interest for wireless *** RF spectrum is becoming denser and more employed,making its availability tough for additional *** communication,exploited for messages or indications in historical times,is now becoming famous and useful in combination with error-correcting codes(ECC)to mitigate the effects of fading caused by atmospheric turbulence.A free-space communication system(FSCS)in which the hybrid technology is based on FSO and *** is a capable solution to overcome the downsides of current schemes and enhance the overall link reliability and *** proposed FSCS with regular low-density parity-check(LDPC)for coding techniques is deliberated and evaluated in terms of signal-to-noise ratio(SNR)in this *** extrinsic information transfer(EXIT)methodology is an incredible technique employed to investigate the sum-product decoding algorithm of LDPC codes and optimize the EXIT chart by applying curve *** this research work,we also analyze the behavior of the EXIT chart of regular/irregular LDPC for the *** also investigate the error performance of LDPC code for the proposed FSCS.

关键词： Free-space communication system low-density parity-check errorcorrecting codes extrinsic information transfer

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

CNTFET Based Fully Differential First Order All Pass Filter

引用

Computer Systems Science & Engineering 2023年第3期44卷 2425-2438页

作者： muhammad I.Masud Iqbal A.khan Department of Electrical Engineering Umm Al Qura UniversityMakkah21955Saudi Arabia

A novel,carbon nanotubefield effect transistor(CNTFET)based fully differentialfirst order all passfilter(FDFAPF)circuit configuration is *** FDFAPF uses CNTFET based negative transconductors(NTs)and positive transconductors(PTs)in its *** proposed circuit topology employs two PTs,two NTs,two resistors and one *** the passive components of the realized topology are *** only fully differentialfirst order all passfilter(AO-FDFAPF)topology is also derived from the proposed *** electronic tunability of the AO-FDFAPF is obtained by controlling the employed CNTFET based varactor.A tunabilty of pole frequency in the range of 10.5 to 26 GHz is *** the circuits are potential candidates for high frequency fully differential analog signal processing *** compared to prior state-of-the-art works,both the realized topologies have achieved highest pole frequency and lowest power ***,they utilize compact circuit structures and suitable for low voltage ***,both topologies work equally well in the deep *** proposedfilters are analyzed and verified through HPSPICE simulations by utilizing Stanford CNTFET model at 16 nm technology *** is observed that the proposed circuit simulation outcomes verify the theory.

关键词： Fully differential CNTFET all passfilters pole frequency tunability

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Dynamical system of a SEIQV epidemic model with nonlinear generalized incidence rate arising in biology

引用

International Journal of Biomathematics 2017年第7期10卷 107-125页

作者： muhammad Altaf khan Yasir khan Taj Wali khan Saeed Islam Department of Mathematics Abdul Wali khan University Mardan Khyber Pakhtunkhwa Pakistan Department of Mathematics University of Haft Al-Batin Haft Al-Batin 31991 Saudi Arabia

In this paper, a dynamical system of a SEIQV mathematical model with nonlinear generalized incidence arising in biology is investigated. The stability of the disease-free and endemic equilibrium is discussed. The basic reproduction number of the model is obtained. We found that the disease-free and endemic equilibrium is stable locally as well as globally asymptotically stable. For R0〈1, the disease-free equilibrium is stable both locally and globally and for R0〉1, the endemic equilibrium is stable globally asymptotically. Finally, some numerical results are presented.

关键词： Epidemic model SEIQV model vaccination global stability numerical solution.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

AntiFlamPred: An Anti-Inflammatory Peptide Predictor for Drug Selection Strategies

引用

Computers, Materials & Continua 2021年第10期69卷 1039-1055页

作者： Fahad Alotaibi muhammad Attique Yaser Daanial khan Department of Information System Faculty of Computing and Information TechnologyKing Abdulaziz UniversityJeddah21589Saudi Arabia Department of Computer Science University of Management and TechnologyLahore54000Pakistan Department of Information Technology University of GujratGujrat50700Pakistan

Several autoimmune ailments and inflammation-related diseases emphasize the need for peptide-based therapeutics for their treatment and established substantial ***,the wet-lab experiments for the investigation of anti-inflammatory proteins/peptides(“AIP”)are usually very costly and remain ***,before wet-lab investigations,it is essential to develop in-silico identification models to classify prospective anti-inflammatory candidates for the facilitation of the drug development *** anti-inflammatory prediction tools have been proposed in the recent past,yet,there is a space to induce enhancement in prediction performance in terms of precision and *** exceedingly accurate antiinflammatory prediction model is proposed,named AntiFlamPred(“Antiinflammatory Peptide Predictor”),by incorporation of encoded features and probing machine learning algorithms including deep *** proposed model performs best in conjunction with deep *** testing and validation were applied including cross-validation,self-consistency,jackknife,and independent set *** proposed model yielded 0.919 value for area under the curve(AUC)and revealed Mathew’s correlation coefficient(MCC)equivalent to 0.735 demonstrating its effectiveness and ***,the proposed model was also extensively probed in comparison with other existing *** performance of the proposed model also out-performs other existing *** outcomes establish that the proposed model is a robust predictor for identifying AIPs and may subsidize well in the extensive lab-based ***,it has the potential to assiduously support medical and bioinformatics research.

关键词： Prediction feature extraction machine learning bootstrap aggregation deep learning bioinformatics computational intelligence antiinflammatory peptides

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

An Innovative Approach Utilizing Binary-View Transformer for Speech Recognition Task

引用

Computers, Materials & Continua 2022年第9期72卷 5547-5562页

作者： muhammad Babar Kamal Arfat Ahmad khan Faizan Ahmed khan Malik muhammad Ali Shahid Chitapong Wechtaisong muhammad Daud Kamal muhammad Junaid Ali Peerapong Uthansakul COMSATS University Islamabad Islamabad Campus45550Pakistan Suranaree University of Technology Nakhon Ratchasima30000Thailand COMSATS University Islamabad Lahore Campus54000Pakistan COMSATS University Islamabad Vehari Campus61100Pakistan National University of Sciences&Technology Islamabad45550Pakistan Virtual University of Pakistan Islamabad Campus45550Pakistan

The deep learning advancements have greatly improved the performance of speech recognition systems,and most recent systems are based on the Recurrent Neural Network(RNN).Overall,the RNN works fine with the small sequence data,but suffers from the gradient vanishing problem in case of large *** transformer networks have neutralized this issue and have shown state-of-the-art results on sequential or speech-related ***,in speech recognition,the input audio is converted into an image using Mel-spectrogram to illustrate frequencies and *** image is classified by the machine learning mechanism to generate a classification ***,the audio frequency in the image has low resolution and causing inaccurate *** paper presents a novel end-to-end binary view transformer-based architecture for speech recognition to cope with the frequency resolution ***,the input audio signal is transformed into a 2D image using ***,the modified universal transformers utilize the multi-head attention to derive contextual information and derive different speech-related ***,a feedforward neural network is also deployed for *** proposed system has generated robust results on Google’s speech command dataset with an accuracy of 95.16%and with minimal *** binary-view transformer eradicates the eventuality of the over-fitting problem by deploying a multiview mechanism to diversify the input data,and multi-head attention captures multiple contexts from the data’s feature map.

关键词： Convolution neural network multi-head attention multi-view RNN self-attention speech recognition transformer

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Thulium-Doped Fiber Amplifier for Blue Light Signal Amplification

引用

China Communications 2019年第5期16卷 181-188页

作者： muhammad Hanif Ahmed khan Khushik Chun Jiang State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University

Fluoride-based thulium-doped visible light fiber amplifier(TmVLFA), which can be used to amplify the blue light signal for a visible light communication(VLC) system,is theoretically demonstrated for the first time according to the best of our knowledge. The transition rate equations and power propagation equations are solved to predict the dependence of the gain and noise figure on fiber parameters. The numerical results show that with the pump wavelength 1150 nm and pump power 800 mW, 2.75 m long thulium-doped fiber can amplify blue light(480 nm) signal up to 33.3 dB, and the noise figure is in the range from 3.0 to 3.5 dB. The model and numerical results encourage the use of fiber amplifier in VLC system for blue light amplification to extend the range of VLC.

关键词： Tm-doped visible light fiber amplifier visible light communication fiber amplifier gain noise figure

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Surface Plasmon Polariton Fizeaus Dragging: via Relative Rotational Sensing

引用

Communications in Theoretical Physics 2019年第4期71卷 435-440页

作者： Bilal Shoaib muhammad Haneef Humayun khan Bakhtawar Lab of Theoretical Physics Department of Physics Hazara University Department of Physics Women UniversityMardan

A new scheme focusing on the surface plasmon polariton interferometry between the metal and dielectric interface is introduced. The phase shift is measured by using surface plasmon polariton wave, generated at the interface of metallic and dielectric media. The phase shift of SPPs is modi?ed under phase and amplitude control of complex conductivity for interferometry. The control ?elds strongly in?uence the phase shift of SPPs for detection of molecular motion. The phase shift of SPPs is further modi?ed by Plasmon polariton Fizeaus dragging effect. We measure 20%–25%fractional change in delay and their phases shift between two left and right SPPs modes. Our results may have signi?cant applications in sensor interferometer technology.

关键词： surface plasmon polariton Fizeaus dragging

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Regulatory Genes Through Robust-SNR for Binary Classification Within Functional Genomics Experiments

引用

Computers, Materials & Continua 2023年第2期74卷 3663-3677页

作者： muhammad Hamraz Dost muhammad khan Naz Gul Amjad Ali Zardad khan Shafiq Ahmad Mejdal Alqahtani Akber Abid Gardezi muhammad Shafiq Department of Statistics Abdul Wali Khan UniversityMardan23200Pakistan Industrial Engineering Department College of EngineeringKing Saud UniversityP.O.Box 800Riyadh11421Saudi Arabia Department of Computer Science COMSATS University IslamabadIslamabad45550Pakistan Department of Information and Communication Engineering Yeungnam UniversityGyeongsan38541Korea

The current study proposes a novel technique for feature selection by inculcating robustness in the conventional Signal to noise Ratio(SNR).The proposed method utilizes the robust measures of location i.e.,the“Median”as well as the measures of variation i.e.,“Median absolute deviation(MAD)and Interquartile range(IQR)”in the *** this way,two independent robust signal-to-noise ratios have been *** proposed method selects the most informative genes/features by combining the minimum subset of genes or features obtained via the greedy search approach with top-ranked genes selected through the robust signal-to-noise ratio(RSNR).The results obtained via the proposed method are compared with wellknown gene/feature selection methods on the basis of performance metric i.e.,classification error rate.A total of 5 gene expression datasets have been used in this *** subsets of informative genes are selected by the proposed and all the other methods included in the study,and their efficacy in terms of classification is investigated by using the classifier models such as support vector machine(SVM),Random forest(RF)and k-nearest neighbors(k-NN).The results of the analysis reveal that the proposed method(RSNR)produces minimum error rates than all the other competing feature selection methods in majority of the *** further assessment of the method,a detailed simulation study is also conducted.

关键词： Median absolute deviation(MAD) classification feature selection high dimensional gene expression datasets signal to noise ratio

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：