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Engineering（科研） 2010年第3期2卷 166-171页

作者： Sunita Rani sarva jit singh 不详

In welded-contact boundary conditions, some stress components are not required to be continuous across the boundary between two elastic half-spaces. The purpose of this note is to study the modifications in the stress field of a long inclined strike-slip, dip-slip or tensile fault caused by the welded-contact boundary conditions across the interface between two elastic half-spaces. The Poisson’s ratios of the two half-spaces do not appear in the stress field of a strike-slip fault. In the case of a dip-slip fault, the Poisson’s ratio of the half-space in which the fault lies, has a significant influence on the stress field across the interface. However, for a tensile fault, the modification in the stress field is significantly affected by the Poisson’s ratios of both the half-spaces.

关键词： Dip-Slip Fault Stress Field Strike-Slip Fault Tensile Fault Two-Dimensional Welded-Contact

A Note on the Effect of Negative Poisson’s Ratio on the Deformation of a Poroelastic Half-Space by Surface Loads

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Engineering（科研） 2010年第6期2卷 432-437页

作者： Sunita Rani Raman Kumar sarva jit singh 不详

The aim of this note is to study the effect of negative Poisson’s ratio on the quasi-static deformation of a poroelastic half-space with anisotropic permeability and compressible fluid and solid constituents by surface loads. Two particular cases considered are: two-dimensional normal strip loading and axisymmetric normal disc loading. It is found that a negative Poisson’s ratio makes the Mandel-Cryer effect more prominent. It also results in an increase in the magnitude of the surface settlement.

关键词： Anisotropic Permeability Auxetic Material Negative Poisson’s Ratio Poroelastic Half-Space Quasi-Static Deformation Surface Loading

Computational Investigation of Multiband EMNZ Metamaterial Absorber for Terahertz Applications

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Computers, Materials & Continua 2022年第5期71卷 3905-3920页

作者： Ismail Hossain Md Samsuzzaman Mohd Hafiz Baharuddin Norsuzlin Binti Mohd Sahar Mandeep singh jit singh Mohammad Tariqul Islam Space Science Center Universiti Kebangsaan Malaysia43600UKM BangiSelangorMalaysia Department of Computer and Communication Engineering Faculty of Computer Science and EngineeringPatuakhali Science and Technology UniversityBangladesh Department of Electrical Electronic and Systems EngineeringFaculty of Engineering and Built EnvironmentUniversiti Kebangsaan MalaysiaMalaysia

This study presents an Epsilon Mu near-zero(EMNZ)nanostructured metamaterial absorber(NMMA)for visible regime *** resonator and dielectric layers are made of tungsten(W)and quartz(fused),where the working band is expanded by changing the resonator layer’s *** to perfect impedance matching with plasmonic resonance characteristics,the proposed NMMA structure is achieved an excellent absorption of 99.99%at 571 THz,99.50%at 488.26 THz,and 99.32%at 598 THz *** absorption mechanism is demonstrated by the theory of impedance,electric field,and power loss density distributions,*** geometric parameters are explored and analyzed to show the structure’s performance,and a near-field pattern is used to explain the absorption mechanism at the resonance frequency *** numerical analysis method describes that the proposed structure exhibited more than 80%absorbability between 550 and 900 *** Computer Simulation Technology(CST Microwave Studio 2019)software is used to design the proposed ***,CSTHFSS interference is validated by the simulation data with the help of the finite element method(FEM).The proposed NMMA structure is also exhibits glucose concentration sensing capability as *** the proposed broadband absorber may have a potential application in THz sensing,imaging(MRI,thermal,color),solar energy harvesting,light modulators,and optoelectronic devices.

关键词： Metamaterial absorber terahertz applications multiband EM near zero nanostructured visible regime applications

Inkjet Printed Metamaterial Loaded Antenna for WLAN/WiMAX Applications

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Computers, Materials & Continua 2022年第5期71卷 2271-2284页

作者： Farhad Bin Ashraf Touhidul Alam Md Tarikul Islam Mandeep jit singh Norbahiah Binti Misran Mohammad Tariqul Islam Department of Electrical Engineering Polytechnique MontréalMontréalQC H3T 1J4Canada Space Science Centre(ANGKASA) Institute of Climate Change(IPI)Universiti Kebangsaan MalaysiaBangi43600SelangorMalaysia Department of Electrical Electronic and Systems EngineeringFaculty of Engineering and Built EnvironmentUniversiti Kebangsaan MalaysiaMalaysia

In this paper,the design and performance analysis of an Inkjetprinted metamaterial loaded monopole antenna is presented for wireless local area network(WLAN)and worldwide interoperability for microwave access(WiMAX)*** proposed metamaterial structure consists of two layers,one is rectangular tuning fork-shaped antenna,and another layer is an inkjet-printed metamaterial *** metamaterial layer is designed using four split-ring resonators(SRR)with an H-shaped inner structure to achieve negative-index metamaterial *** metamaterial structure is fabricated on low-cost photo paper substrate material using a conductive inkbased inkjet printing technique,which achieved dual negative refractive index bands of 2.25–4.25 GHz and 4.3–4.6 *** antenna is designed using a rectangular tuning fork structure to operate at WLAN and WiMAX *** antenna is printed on 30×39×1.27 mm3 Rogers RO3010 substrate,which shows wide impedance bandwidth of 0.75 GHz(2.2 to 2.95 GHz)with 2 dB realized gain at 2.4 *** integrating metamaterial structure,the impedance bandwidth becomes 1.25 GHz(2.33 to 3.58 GHz)with 2.6 dB realized gain at 2.4 *** antenna bandwidth and gain have been increased using developed quad SRR based metasurface by 500 MHz and 0.6 dBi ***,the proposed quad SRR loaded antenna can be used for 2.4 GHz WLAN bands and 2.5 GHz WiMAX *** contribution of this work is to develop a cost-effective inject printed metamaterial to enhance the impedance bandwidth and realized the gain of a WLAN/WiMAX antenna.

关键词： Metamaterial epsilon negative antenna split ring resonator WiMAX WLAN

RSS-Based Indoor Localization System with Single Base Station

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Computers, Materials & Continua 2022年第3期70卷 5437-5452页

作者： Samir Salem Al-Bawri Mohammad Tariqul Islam Mandeep jit singh Mohd Faizal Jamlos Adam Narbudowicz Max J.Ammann Dominique M.M.P.Schreurs Space Science Centre Climate Change InstituteUniversiti Kebangsaan MalaysiaBangi43600Malaysia Department of Electrical Electronic and Systems EngineeringFaculty of Engineering and Built EnvironmentUniversiti Kebangsaan MalaysiaUKMBangi43600SelangorMalaysia Faculty of Mechanical Engineering Universiti Malaysia PahangPekan26600PahangMalaysia Antenna and High Frequency Research Centre School of Electrical&Electronic EngineeringDublin Institute of TechnologyDublin 8Ireland Department of Electrical Engineering Division ESAT-TELEMICKU LeuvenBelgium

The paper proposes an Indoor Localization System(ILS)which uses only one fixed Base Station(BS)with simple non-reconfigurable *** proposed algorithm measures Received Signal Strength(RSS)and maps it to the location in the room by estimating signal strength of a direct line of sight(LOS)signal and signal of the first order reflection from the *** algorithm is evaluated through both simulations and empirical measurements in a furnished open space office,sampling 21 different locations in the *** is demonstrated the system can identify user’s real-time location with a maximum estimation error below 0.7 m for 80%confidence Cumulative Distribution Function(CDF)user level,demonstrating the ability to accurately estimate the receiver’s location within the *** system is intended as a cost-efficient indoor localization technique,offering simplicity and easy integration with existing wireless communication *** comparable single base station localization techniques,the proposed system does not require beam scanning,offering stable communication capacity while performing the localization process.

关键词： Indoor localization localization techniques received signal strength

Modelling and Reporting Parameters of Optical OFDM System Using Different Modulation Techniques

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Optics and Photonics Journal 2013年第2期3卷 204-210页

作者： Harsimran jit Kaur Maninder Lal singh Electronics and Communication Engineering Chitkara University Mohali India Guru Nanak Dev University Amritsar India

OFDM (Optical Orthogonal Frequency Division Multiplexing) in the optical domain is a promising technology which provides solutions to problems of today’s optical networks. In the present research an optical OFDM system is designed using different modulation techniques QPSK (quadrature phase shift keying), QAM (quadrature amplitude Modulation). Various signal conditioning parameters, like OSNR (optical signal to noise ratio), BER (bit error rate), chromatic dispersion and electrical SNR (signal to noise ratio) have been reported in present research. These parameters could be used for identifying the fault. On the basis of conclusion drawn for values of these parameters, the system may dynamically adapt and reconfigure itself for better transmission. In present research OPTSIM and MATLAB has been used as Simulation tools.

关键词： OFDM OSNR BER QPSK

Leaf Temperature as Thermal Bio-indicator of Heavy Metal Pollutants

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Journal of Agricultural Science and Technology(A) 2012年第1期2卷 131-137页

作者： Anil Kumar Thakur Kamal jit singh Botany R.G. Government College Shimla i71 004 India Department of Botany Panjab University Chandigarh 160 014 India

Environmental pollution is serious social concern. The inflow of heavy metals in the ecological food chain and their subsequent bio-magnification in human bodies is cascading its harmful effects. The metabolism of plants is being hampered by these heavy metals. In the present studies, effect of heavy metal especially cadmium has been studied on stomatal diffusive resistance (SDR), transpiration rate, leaf surface humidity and leaf temperature of soybean plants growing in hydroponic cultures. Cadmium treatment decelerates the rate of transpiration. The inhibition of transpiration associated with increased SDR leads to dehydration of leaf surface, thereby, increasing temperature of leaves in comparison to control plants. In the present study, temperature difference between stressed and non-stressed plant leaves was as high as 3 oC. Moreover, any such rise in leaf temperature due to uptake and induced toxicity of heavy metals can possibly be a good bio-indicator having wide applications in thermal remote sensing and geospatial monitoring of metal polluted soils.

关键词：重金属污染物生物指标叶温重金属污染土壤气孔扩散阻力蒸腾速率植物叶片叶片温度

Isolated sporadic bilateral split hand malformation: a case report and review of the literature

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Plastic and Aesthetic Research 2014年第1期1卷 114-117页

作者： Manjit singh Sukhminder jit singh Bajwa Harsimarjit Kaur Ravinder singh Department of Orthopaedics Gian Sagar Medical College and HospitalBanur 140601PunjabIndia Department of Anaesthesiology and Intensive Care Gian Sagar Medical College and HospitalBanur 147001PunjabIndia Department of Anatomy Govt.Medical CollegePatiala 147001PunjabIndia

Typical cleft hand is a rare disorder usually inherited in an autosomal-dominant *** report a case of bilateral typical cleft hand in a 6-year-old *** was no positive family history of such presentation,and no systemic manifestations were associated with this *** evaluation revealed no systemic or airway challenges and parents were counseled for routine surgical and anesthetic *** hands underwent successful surgical reconstruction with no peri-operative *** the best of our knowledge,this is theﬁrst report of an operated case of an isolated,bilateral,and sporadic typical split hand malformation.

关键词： Cleft hand congenital anomalies split hand malformation syndactyly

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水牛膈疝的病因

动物医学进展 1981年第3期 26-26页

作者： jit singh 钟俊才

据屡次记载,水牛膈疝比黄牛多。作者在临床上为诊断或治疗进行剖腹的水牛中有40％是膈疝。对水牛膈疝的发病率,其他研究者也有过报导。膈疝的病因学尚不清楚。现有文献没有这方面的论述。两年来,在临床上采用剑状软骨后通路,成功的治疗... 详细信息

据屡次记载,水牛膈疝比黄牛多。作者在临床上为诊断或治疗进行剖腹的水牛中有40％是膈疝。对水牛膈疝的发病率,其他研究者也有过报导。膈疝的病因学尚不清楚。现有文献没有这方面的论述。两年来,在临床上采用剑状软骨后通路,成功的治疗了许多泌乳水牛的膈疝。本文试图对经外科手术治疗的58头水牛膈疝的可能病因进行了分析和讨论。

关键词：水牛胃腹膜炎母牛

The Stress of COVID-19:Playing Havoc with the Hormones-A Review

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Journal of Endocrinology Research 2020年第2期2卷 1-8页

作者： Sukhminder jit singh Bajwa Ridhima Sharma Madhuri S Kurdi Department of Anaesthesiology and Intensive Care Gian Sagar Medical College and HospitalBanurPatialaPunjabIndia Superspeciality Paediatric hospital and Postgraduate teaching institute NoidaUttar PradeshIndia Karnataka Institute Of Medical Sciences(KIMS) HubliKarnatakaIndia

Severe acute respiratory syndrome coronavirus-2(SARS-CoV-2)has affected millions of people across the world engendering an unprecedented *** disease(COVID)-19 can present asymptomatic or in the form of the acute respiratory syndrome,viral pneumonia,or *** to the novelty of the disease,the endocrine manifestations are not fully *** becomes indispensable to address the underlying endocrine disruptions contributing to the severe form of illness and thereby increasing the *** discuss here the SARS-CoV-2 virus and endocrine reverberations based on the research with structurally similar ***-CoV-2 enters the body via its attachment to the angiotensin-converting enzyme 2(ACE2)*** from lungs,ACE2 expression on various organs can lead to endocrine *** COVID-19 infection,pre-existing endocrine disorders warrant cautious management and may require replacement ***-19 and its repercussions on hormones are discussed extensively in this review.

关键词： Coronavirus disease(COVID)-19 Endocrine Hormones Pandemic Severe acute respiratory syndrome coronavirus (SARS-CoV)-2