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Science and Engineering Applications

ISSUE IN PROGRESS (Vol 2 Issue 2 )

☑ Homotopy Perturbation for Excited Nonlinear Equations

Yusry O.El-Dib

Department of Mathematics, Faculty of Education, Ain Shams University, Roxy, Egypt

  • subtitlesABSTRACT

    The purpose of this paper is to apply a version of homotopy technique to excited nonlinear problems. A modulation for the homotopy perturbation is introduced in order to be successfully for nonlinear equations having periodic coefficients. The nonlinear damping Mathieu equation has been studied as a simplest example. The analysis proceeds without assuming weakly nonlinearity and without presence of small factor for the periodic term. In this analysis, two nonlinear solvability conditions are imposed. One of them imposed in the first-order homotopy perturbation and used to study the stability behavior at resonance and non-resonance cases. The second level of the perturbation produces another solvability condition and used to determine the unknowns appear in solution for the first-order solvability condition. The method can be, also, used for excited linear equation. Stability conditions, and also the transition curves, are formulated independent of the small parameter i.e. in the unperturbed form as an alternative to classical methods.

  • gamesKEYWORDS

    Homotopy perturbation method, nonlinear Mathieu equation, modulation method, parametric resonance.

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☑ Design of Micro Domain Composites Structure for Advance Optical Application

Sudhanshu Singh1 , Umesh Kumar Dwivedi2

1Amity School of Engineering and Technology, Amity University Rajasthan Jaipur 303002

2Assistant Professor, Amity School of Engineering & Technology, Amity University Rajasthan Jaipur 303002

  • subtitlesABSTRACT

    The covered work covers the state of the art- micro electronics in the area of renewable energy sector. From the literature survey done at various levels, a lot of research done in micro level for benefit nature has been mentioned. As the green chemistry and green environment to be boost with the miniature technology to be used, nano electronics field in terms of use of 1dimensional (quantum dot/nano particle) to 2 dimensional (nano wire) to 3 Dimensional(nano sphere) to 4 dimensional materials (nano origami/bio mimic). A lot of potential at nano level will help in shaping the nature, human kind and environment using renewable energy. Since 1996 a lot of work has been carried on under the aegis of micro electronics, which face some problem in globalization and miniaturization. Under nano electronics domain, the challenges of cost to be well optimized.

  • gamesKEYWORDS

    Bio mimic, micro electronics, nano electronics, optimization, origami.

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☑ Compatibility Studies of Polyacrylamide/Nanoclay/Copper oxide Nanocomposites on the Fluidic Physical Properties for Improvement of Inkjet Printability

Neetika Singh, Hari Madhav, Paramjit Singh, and Gautam Jaiswar

Department of Chemistry, Dr. B. R. Ambedkar University, Agra- 282 002, India

  • subtitlesABSTRACT

    Water-borne ink, an industrially important ink based on the polyacrylates, in that polyacrylamides imparts specific properties to the inks. Some properties of inks such as glossy or hardness is also adjust by varying the polymers, so in the present studies, nanocomposites of Polyacrylamide /Nanoclay/copper oxide nanoparticles were synthesized. The Nanoclay and Nanoparticles was varied to 0.5, 1 and 2% with respect to monomer of acrylamide and the effect of physical properties of ink such as, density, viscosity, surface tension, drying and smudging were performed to see the performance of it on polymer nanocomposites mixed in ink. The final product were characterized by UV-Vis and FTIR were used to see the presence of individual component of nanocomposites. It was found that the solution with polymer nanocomposites shows, improved in the physical properties with variation of 2% with respect to ink solution. Finally the biological activities were performed to see the effect of it on the ink solution.

  • gamesKEYWORDS

    Copper oxide nanoparticles, Inkjet Ink, Nanoclay, Polyacrylamide, Survismeter.

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☑ Sensing of Picric acid through fluorescence studies of PANI-IPN film

Tayyab ali2, J. Venkata viswanath1,4, N.V. Srinivasa Rao4, A. Venkataraman1,3*

1Materials Chemistry Laboratory, Department of Materials Science, Gulbarga University, Kalaburagi-585106 Karnataka, India

2Walchand Centre for research in nontechnology & Bionanotechnology (wcRnb), Solapur, Maharashtra, India.

3Department of Chemistry, Gulbarga University, Kalaburagi-585106 Karnataka, India.

4GUK R & D Centre, Premier Explosive limited, Peddakandukur, Nalgonda. Telengana, India.

  • subtitlesABSTRACT

    An interpenetrating polymer network (IPN) film for sensing of Picric acid (PA) is prepared by chemical assembly of polyaniline-polyvinyl alcohol (PANI-PVA) film by casting on a glass substrate. The prepared IPN film and is employed for the detection of a representative nitroaromatic compound (NAC), in the present case, (PA), for both in solution and in vapor phase of the analyte. This molecular design combines the advantages of IPN film based on single layer chemistry and the signal amplifications as effective way to create novel sensing film for the detection of NACs and other high energy materials (HEMs). Significant static fluorescence quenching was observed for the IPN films within a few seconds of treating with PA solutions. The vapour phase detection of PA was observed on IPN films with good response times. Almost linear increase in the sensitivity calculation obtained through the electrical resistivity measurements within 30.0 min is observed. The structural study of the IPN films before and after treatment with PA is studied employing FTIR spectrometer and stereozoom microscope. Fluorescence quenching Experiments on the IPN films showed that these films can be efficiently reused for two successive cycles. The electrical resistivity studies showed the film to sustain the vapour phase detection for a single measurement. The fluorescence studies and the electrical resistivity studies showed that the films are potential candidates for detection of PA vapours.

  • gamesKEYWORDS

    PANI-IPN film, Fluorescence, FTIR, Morphology, Sensing behavior.

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☑ Fabrication of Indium Oxide thin films sensor for H2S

H. N. Kapse1 ,B. H. Lashkari2, K. K. Makhija3

1Instrumentation & Control Department - Institute of Science & Technology for Advanced Studies & Research (ISTAR), Vallabh Vidyanagar - 388120, Gujarat, India

2Electronics Department - V. P. & R. P. T. P. Science College, Vallabh Vidyanagar - 388120, Gujarat, India

3Retired Reader in Electronics, Guest Editor-Sensors &Transducers, A/5 Kalikundnagar Society, Bakrol, Dist: Anand – 388315, Gujarat, India

  • subtitlesABSTRACT

    The present work is based on fabrication of Indium oxide with Tellurium dispersed thin film sensor for H2S gas application. The study reveals capability of Indium Oxide (IO) thin films as selective H2S gas sensor when Tellurium (Te) layer was dispersed. The inbuilt heater was fabricated from Indium Tin Oxide (ITO) thin films. Sensor showed promising results as the study of sensitivity was carried out for different concentrations of H2S gas. The ratio of electrical conductance when, the sensor is operating at a higher temperature and to that at lower temperature is unaffected by water vapour but is sensitive to H2S species. Hence the detrimental effects of humidity on the sensing properties of the IO thin film gas sensors are almost negligible on H2S . The gas sensor was operated at concentrations of 40, 100, 200 & 400 ppm of H2S gas at room temperature and was found to have good sensitivity and fast response.

  • gamesKEYWORDS

    H2S Gas Sensor, Indium Oxide, Thin films.

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☑ Optical and Electrical properties of Sn-Doped Cadmium Oxide Thin Films Grown by Chemical Bath Deposition Technique

Gbadebo Taofeek Yusuf1* , Babatunde Keji Babatola1, Abdul Dimeji Ishola1,Segun Rotimi Oladimeji2,Adebukola Ayoade Adedeji3, Joshua Toyin Adeleke4

1Faculty of Science, Osun State Polytechnic, Iree, Nigeria

2School of Vocational and Technical Education, Department of Technical Education, Osun State College of Education, Ila-Orangun, Nigeria

3Electrical/Electronics, Osun State College of technology, Esa-Oke, Nigeria

4Faculty of Science, Engineering and Technology. Department of Mathematical and Physical Sciences, Physics with Electronics unit. Osun State University, Osogbo, Nigeria

  • subtitlesGRAPHICAL ABSTRACT
  • subtitlesABSTRACT

    The structural, optical and electrical properties of the films at different doping concentrations of 0, 2, 4, and 6 % have been investigated using chemical bath deposition technique. Cadmium acetate di-hydrate was used as precursor for preparation of the CdO thin films and Tin (II) chloride was employed as a tin source. The XRD patterns revealed a polycrystalline having the characteristic peaks of cubic structure. Transmittance of the CdO films increases with increasing Sn dopant in the films, and the maximum transmittance of 84% was seen at 4% doping concentration. The above observation was confirmed by AFM study which depicts uniform and homogeneous, thin films at 2 and 4 % at Sn doping concentrations. The average bandgap energy of tin oxide was 2.30eV and this value is bigger than that of pure CdO 2.22eV. This implies that the tin doping can be used as a regulator of the bandgap of CdO films. Hall mobility, carrier density of Sn: CdO films show variation with Sn: CdO doping concentration such that carrier concentration and mobility show the maximum at 4% doping concentration. The films grown at 4% in this work is a promising candidate for solar cell applications.

  • gamesKEYWORDS

    Cadmium oxide, tin, electrical, transmittance, optical band gap.

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☑ A First Principles Study of Structural, Electronic and Optical properties of Aluminium Antimonide with spin orbit coupling (SOC)

Joseph L. Pachuau1, F. Lalhmangaihkima1, Lalhmachhuana Chhangte1 , D.P. Rai1, A. Shankar2 , Sandeep 3 , and R. K. Thapa 3,a*

1Department of Physics Pachhunga University college, Aizawl, India 796001

2Department of Physics, North Bengal University, Darjeeling

3Department of Physics Mizoram University, Aizawl, India 796009

  • subtitlesGRAPHICAL ABSTRACT
  • subtitlesABSTRACT

    A density functional theory (DFT) employing generalized gradient approximation (GGA) have been used to study the electronic and optical properties of AlSb. The transition along Γ point predict this material to be a direct band-gap semiconductor. The presence of band gap 1.0-2.0 eV shows great interest due to their band gap matching with the optimized incident photon energy (UV-range). Also the presence of hybrid bands at the maxima of the valence region, that is the combination of the sharp and the flat bands enhances the electron transports. Thus AlSb can be a better prospectus for solar cell devices.

  • gamesKEYWORDS

    Semiconductor, band gap, GGA, GGA-SO, FPLAPW .

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☑ A Comparative LPG sensing study of bulk titanium oxide and nanostructured titanium oxide

Anuradha Yadav1, and B. C. Yadav2

1Nanomaterials and Sensors Research Laboratory, Department of Physics,University of Lucknow, Lucknow-226007, U.P., India

2Department of Applied Physics, School for Physical Sciences,Babasaheb Bhimrao Ambedkar University, Lucknow-226025, U.P., India

  • subtitlesGRAPHICAL ABSTRACT
  • subtitlesABSTRACT

    This paper is focused on the comparative LPG sensing performances of bulk titanium dioxide and the synthesized TiO2 through hydrolysis of TiCl3 . The mean value sensitivity for different volume percentages (1-5%) of LPG has been estimated. Sensor response as a function of exposure time and response time has also been calculated. The average sensitivity and sensor response of the sensing element made of Titania synthesized through hydrolysis of TiCl3 are found to be maximum 3.0 and 318 respectively for 5 vol.% of LPG. Response time of the sensor was 70 sec. SEM images show that synthesized TiO2 is more porous than the obtained from Qualigens before exposure to the LPG. The minimum crystallites size of the purchased TiO2 and synthesized TiO2 are found to be 65 nm and 18 nm respectively. XRD patterns divulge that TiO2 is tetragonal and crystalline in nature. The device response was found to be concentration dependent, slow at low concentration and fast at higher concentrations.

  • gamesKEYWORDS

    LPG Sensor;TiO2 ; SEM; XRD; Sensitivity.

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☑ Heavy Metal uptake from Industrial Effluents using Natural Zeolitic Aluminosilicates

Marina G. Xavier and Samuel F. Banda

Department of Chemistry, University of Zambia, P.O. Box 32379, Lusaka, Zambia

  • subtitlesABSTRACT

    The uses of zeolites derive from their special properties: They can interact with water to adsorb or release ions (ion exchange); they can selectively adsorb ions that fit the cavities in their structures (molecular sieves). The locally available zeolite samples have been proved to have application in reducing toxic waste and causes driven by environmental concern and energy consumption. Cation-containing zeolites can differentiate molecules on the basis of their electrostatic interactions with the metal ions, size difference, shape and polarity. The adsorption properties of certain specific pore sized zeolites are useful for size selective separation of molecules. The high cation exchange capacity of zeolites as evident from our studies combined with their selective affinity for specific cations make them uniquely suited to various application in disposal of Industrial effluents like Cu, Cr, Co, Zn etc. The heavy metal ions were quantified using atomic absorption spectroscopy before and after the process of adsorption. This promising adsorbent is found to exhibit 90% adsorption efficiency with most of the heavy metals.

  • gamesKEYWORDS

    Heavy metals; adsorption; cation exchange capacity; effluent treatment.

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☑ Preparation and mechanical properties of pine needle/ polypropylene bio-composites

Ramakrishna .M1, Vivek kumar2, Yuvraj Singh Negi3, Aradhyula Thirumala Vasu*1, Murthy Chavali4

1Department of Mechanical Engineering, Vignan’s Foundation for Science, Technology and Research University (VFSTRU; Vignan University), Vadlamudi 522 213 Andhra Pradesh, India

2Department of Paper Technology, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur 247 001 India

3Department of Polymer and Process Engineering, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur 247 001 India

4Division of Chemistry, Department of Sciences and Humanities, Vignan’s Foundation for Science, Technology and Research University (VFSTRU; Vignan University), Vadlamudi 522 213 Andhra Pradesh, India

  • subtitlesABSTRACT

    The main objective of the present work is to develop a low-cost eco-friendly and biodegradable reinforced thermoplastic composites utilizing pine needle fibers as reinforcing materials. Pine needle/polypropylene composites were prepared with varying load of fillers, and varying dosage of compatibilizer (MA-g-PP) to improve the interface bonding between fiber and the matrix. Composites were prepared by using treated Pine Needle Filler (TPNF), Untreated Pine Needle Filler (UPNF) procured from the paper mill. Sample preparation was carried out in an injection molding machine. Tensile properties of the samples were measured on Shimadzu UTM. TGA and DTG were carried out simultaneously by using a Perkin Elmer Thermal Analyzer. Structural characterization was done using FTIR spectrophotometer. The flame retardancy of TPNF and UPNF reinforced polypropylene composites were characterized by the UL-94 test. The composite intact fracture surface morphology was analyzed on a field emission scanning electron microscope.

  • gamesKEYWORDS

    Composites; TGA; DTG; Field Emission Scanning Electron microscopy; FE-SEM; Flammability.

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☑ Stability criterion for time-delay 3-dimension damped Mathieu equation

Yusry O.El-Dib

Department of Mathematics, Faculty of Education,Ain Shams University, Roxy, Egypt

  • subtitlesABSTRACT

    In the present work, the investigation of the dynamics of three dimensions Mathieu equations containing periodic terms as well as the delayed parameters. Mathieu equations included the influence of damping terms and the coupled system involves both delayed and non-delay terms. The system is proposed as an extension of delayed two coupled Mathieu-type equations to higher dimensions, with emphasis on how resonance between the internal frequencies leads to a loss of stability. The method of multiple scales is used to examine the islands of stability near the resonance cases. The transition curves are analyzed using the method of harmonic balance, and we find we can use this method to easily predict the `resonance curves' from which bands of instability emanate. We note that the delayed higher dimension of the parametric excitation has a great interest and application to the design of nuclear accelerators.

  • gamesKEYWORDS

    Three dimensions Mathieu equations; resonance curves; parametric excitation.

  • subtitlesDOWNLOAD

☑ Developing Self Cleaning Clothes through Chemicals Inspired by Ancient India

Richa Khare , Jaya Pandey and Smriti

Amity School of Applied Sciences, Amity University, Uttar Pradesh, Lucknow Campus, Uttar Pradesh 226028

  • subtitlesABSTRACT

    It is quite true, nothing is impossible in the world that we are living in today. Things that seemed impossible and unachievable in the past have now been brought to our doorsteps by brilliant people. May it be space travel, underwater excavations, robotics or the electronic technology of smart devices; everything is attainable and has been attained. And now another concept which was seemingly impossible in the past has been achieved by the scientific means of nanotechnology: Self-cleaning clothe that involves fabric is a finely woven material used in textile industry found to display varied functions meant for fashion to protection. Durability of fabrics is one of the most important features. Ideal high quality fabric is considered to be resistant to moisture, stains, finger marks and dust. As mentioned, this is an example of an ideal fabric which is almost impossible to inbuilt all the qualities towards meeting customer needs. Advances made in the area of nanotechnology paved the way for high definition clothes. This article summarises fabric’s connect with ancient practices the basic nature and properties, their plausible origin, manufacturing strategies, applications and their impact on environment and human health.

  • gamesKEYWORDS

    Nano molecules; Flourocarbon; Tungusten oxide; Zinc oxide; Fabric.

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☑ Mathematical Modelling of insitu-Bioremediation of Crude Oil Polluted Soil

Sanni E.S1, Emetere E.M2

1Department of Chemical Engineering, Covenant University, Ota, Ogun State, Nigeria
2Department of Physics, Covenant University, Ota, Ogun State, Nigeria

  • subtitlesABSTRACT

    A bioremediation model was developed for the bioremediation of a crude oil polluted soil. The developed mathematical model considers a batch process. The model was designed to predict the quantity of crude oil remaining per time in crude oil contaminated areas during in-situ bioremediation. The model can be used to monitor the progress of soil bioremediation by monitoring crude oil residual concentration per time. Comparing the results of the simulations of the derived model to the results of an existing model, shows that the new model is valid and reliable for monitoring the progress of any batch bioremediation process of crude oil polluted soils.

  • gamesKEYWORDS

    Mathematical modelling; bioremediation; crude oil; batch process; derived model.

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☑ Degeneracy Based Tunable Wavelength of Quantum Dot Laser

A.S.Bhattacharyya, R.Verma, A. S. Dash, P. Rani, D. Modanwala, Parameshwar Kommu

Centre for Nanotechnology, Central University of Jharkhand, Brambe, Ranchi: 835205

  • subtitlesABSTRACT

    We have tried to model the effect of degeneracy on the tunability of wavelength in quantum dots lasers (QDLs). Quantum dots undergo 3D confinement. We obtain the energy values from the Energy of a particle in a box model. The transitions taking place between the energy levels led to emission of radiation having a wide range of wavelengths. The quantum dot size was found to have tunable effect on the wavelength of the emitted radiation.

  • gamesKEYWORDS

    Quantum dots lasers, 3D confinement and tunable wavelength.

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☑ Effects of Zinc Oxide on Polyacrylic Acid: A Core-Shell Nanoparticles

Dharm Pal Singh, Hari Madhav and Gautam Jaiswar

Department of Chemistry, Dr. B. R. Ambedkar University, Agra - 282002, India.

  • subtitlesABSTRACT

    Polymeric core-shell nanocomposites, which are hybrid of polymer and modified inorganic clay with organic surfactants, are extremely attractive in both science and industries. The Acrylic acid coated ZnO particles were successfully synthesized by a two-step chemical method, which were prepared by the polymerization of ZnO nanoparticles and followed by coating of acrylic acid nanolayer. The synthesized Zinc Oxide/Polyacrylic acid (ZnO/PAA) core-shell nanoparticles, consist of zinc oxide as the core and polyacrylic acid as the shell. The SEM study reveals that the ZnO/PAA nanoparticles with average diameters of ~40 nm. The UV-Visible spectroscopy indicates that the core-shell ZnO/PAA nanoparticles reduces the absorbance and act as a good photoabsorber.

  • gamesKEYWORDS

    Acrylic Acid; Core-shell Nanoparticles; SEM-EDX; ZnO

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☑ The Research Based Learning (rbl) of Architecture in Some Important Institutions of India

Tahir Abdulrahman Siddiquee, Sonia Chaudhary, Ahrar Hussain and Mohd. Saquib

Department of Architecture, Faculty of Architecture and Ekistics,Jamia Millia Islamia University, Jamianagar, New Delhi 110025

  • subtitlesABSTRACT

    Research based learning may be considered as group of activities which develop the skills in a learner towards a systematic exploration of a topic, its impact on individuals or society or organization, problems and challenges faced during this quest, finding ways towards resolution of the problem, the benefits of the piece of work done (in the form documents, models, formula, hypothesis etc.), presentation of his findings and suggestions for the furtherance of the work to be carried out by him or others. The understanding of the students doing B.Arch. regarding the significance and impact of research based subjects increased from B. Arch. 1st year to B.Arch. 5th year. The ability of the students doing B.Arch. regarding to overcome the challenges in the research based subjects increased from B. Arch. 1st year to B.Arch. 5th year. The findings revealed that students often involved in the research topics that didn't match their interest and thus they are to be motivated by additional beyond class hours counseling for the novelty and significance of their work. It seems that more teacher taught interaction in discussing the research based subjects is needed.

  • gamesKEYWORDS

    Research Based Learning (RBL), Architecture Curricula, Significance, Challenges

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☑ Composition dependence structural and optical properties of the CuInGaSe nanocrystals

Abhay Kumar Singh*a, P. Senthamaraib, R. Ganesana

aDepartment of Physics, Indian Institute of Science, Bangalore-560012, India
bDepartment of Physics, Anna University of Technology, Trichy, India

Email:abhaysngh@rediffmail.com*

  • subtitlesGRAPHICAL ABSTRACT
  • subtitlesABSTRACT

    This report demonstrates colloidal route synthesis of the Cu24In16Ga4Se56 and Cu24In16Ga7Se53 nanocrystals at temperature ~ 1500C. Materials crystallographic phase formations analysis is performed using the X-ray diffraction, micro-morphology from the Transmission Electron Microscopy and stoichiometric homogeneity by the energy dispersive X-ray mapping. Modification in the bonds feature and the chemical environment are studied with the X-ray photoelectron spectroscopy. The optical properties of the materials are described with the help of UV/Visible, FT-IR transparency and photoluminescence spectroscopy. The synthesized nanocrystals/ particles size are obtained around ~ 40 nm to ~ 60 nm. The optical energy band gaps are evaluated 1.30 eV and 1.39 eV for the Cu24In16Ga4Se56 and Cu24In16Ga7Se53 compositions. A higher order photoluminescence is noticed for the Cu24In16 Ga 7 Se53 composition, while the FT-IR transparency is unchanged in these materials.

  • gamesKEYWORDS

    CIGS; Sole gel; Nanomaterials; Semiconducting materials; Crystal morphology; Optical properties.

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☑ Geochemical Characterization and Mineralogy Control of Rocks to Assign Overburden Management

Waterman Sulistyana Bargawa* and Ira Mughni Pratiwi**

Master of Mining Engineering UPNVYK, Jalan SWK 104 Condongcatur Yogyakarta Indonesia

Email:waterman.sulistyana@gmail.com*, mughniira@gmail.com**

  • subtitlesABSTRACT

    This research is conducted at coal mine, located on Barito Basin, South Kalimantan, Indonesia. The purpose is to characterize geochemistry and mineralogy control of rocks for acid mine drainage prediction to prevent acid mine drainage formation. Rocks geochemical characterization of PAF (Potential acid Forming), NAF (Non Acid Forming), and uncertain material is obtained based on result of overburden geochemincal test comprise paste pH, NAG (Net Acid Generating), TS (Total Sulphur), ANC (Acid Neutralization Capacity), percentage of rocks mineral composition analyzed using XRD. The result of this reasearch shows material is classified into NAF material (81%) and PAF LC (Low Capacity) material (5%); PAF MC (Medium Capacity) material (10%); PAF HC (High Capacity) material (1%); an uncertain data (3%). NAF material is dominated by mudstone. Based on the research material of neutralization is low and comprise of silica, plagioclase, and aluminosilicate mineral thus acid mine drainage formation should be prevented uses dry cover method with encapsulation.

  • gamesKEYWORDS

    Acid mine drainage; Geochemical characterization; Mineralogy; Overburden.

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☑ Study on Strength Characteristics of Hybrid Fibre Reinforced Concrete with Mineral Admixtures

G. Nandini Devi

Department of Civil Engineering, Adhiyamaan College of Engineering, Hosur, Tamilnadu, India

Email:gdevi80@gmail.com

  • subtitlesABSTRACT

    Concrete is a brittle material with a low tensile strength. Fibres when added to concrete increases strength, toughness and ductility. The addition of fibres improves the post-cracking behaviour of concrete. In this project, the strength characteristics of hybrid fibre reinforced concrete is studied experimentally by testing cubes, cylinders and prisms under compression, tension and flexure. Fibres used are glass and steel fibres. The combinations of different types of fibres potentially will improve the overall performance of concrete. Admixtures silica fume and fly ash improves workability of concrete. M25 grade concrete was investigated with addition of steel fibres and glass fibres with admixtures silica fume and fly ash. The test results shows that use of hybrid fibre reinforced concrete with admixtures improves compression, split tensile and flexural performance.

  • gamesKEYWORDS

    Fibre Reinforced Concrete, Glass Fiber, Steel Fiber, Fly Ash, Silica Fume.

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EDITORIAL

☑ Sensational 2D nano materials that could challenge Graphene

Santosh K. Tiwari*a, Vijay Kumarb, G. C. Nayak**a

aDepartment of Applied Chemistry, Indian Institute of Technology (ISM), Dhanbad-826004 (Jharkhand) India
bDepartment of Applied Physics, Chandigarh University, Gharuan, Mohali (Punjab)-140413, India

Email:ismgraphene@gmail.com*, nayak.g.ac@ismdhanbad.ac.in**

☑ Relation form and function of limas house in the city of Palembang

Hartanto Budiyuwono

Department of Architecture of Parahyangan Catholic University, Bandung, Indonesia

Email:budi222002@yahoo.com

  • subtitlesABSTRACT

    Palembang is the capital of South Sumatra Province which has the character as a city of water. In the Sultanate of Palembang in the 16th century, space for a settlement began to lead to land but remain on the boundary river waters. In a further development of this housing is known as home form Limas Palembang. Limas house Palembang is experiencing rapid development in the Sultanate of Palembang Darussalam based on Islam. It is affecting the decoration on the elements of the building, as seen from the interior ornaments that include Arabic script. Meru roof shape (limas) and roof ornament (simbar and tanduk kambing) with both ends pointing upwards, is like on the roofs of traditional buildings in the central states of Hinduism and Buddhism. Namely in the East Asian region that embraces the cosmological principle in the design architecture. By using the method of qualitative research, based on the literature, and survey of the building is still there. It can be concluded that the relation or link between Form and Function in limas house Palembang inseparable from an important goal in architecture, namely the balance and harmony of form.

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☑ Strategic Planning Of Managing Technology In Indian Coal Mining Sector- A Critical Review

Anand Pd. Sinha, P.C Jha , Supriyo Roy

Birla Institute of Technology - Mesra, Ranchi, India

Email:anand.pd.sinha@bitmesra.ac.in

  • subtitlesABSTRACT

    Indian prime industries are facing a lot of competitions nowadays due to the problem of globalization. To keep in race, every industry has to be up to date especially in the area of technology involved in it. Indian open cast coal mining is still far behind in global standards in spite of implementation and use of best technologies. Presently the Open cast Coal mining industries warrants for state of the art technology. Energy security is the prime concern of Indian economy which is distressing Indian industries a lot. The problem lies in the implementation and its effective management. The way in which internal planning and implementation processes are managed could greatly influence the outcome of new technology. For this purpose, one of the public sector organizations namely Central Coalfields Limited, located at Ranchi, Jharkhand is being selected.

  • gamesKEYWORDS

    Effective management, Strategy planning, Technology, Open cast coal mining.

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☑ Aperture Coupled Stacked Microstrip Antenna Array

Ayushi Agarwal, Amanpreet Kaur*

Department of ECE, Thapar University, Patiala, India

* Email: amanpreet.kaur@thapar.edu

  • subtitlesABSTRACT

    This paper presents a novel design of stacked microstrip antenna array for MIMO systems. An aperture coupled feeding technique with rectangular slots has been used to ensure equal coupling to each radiating slots. The antenna system is a layered structure consisting of two driven patches and two parasitic patches. The proposed antenna uses FR4 substrate with dielectric constant 4.4 and height 1.57 mm. The designed structure covers A BROAD wireless band from 5.59 GHz to 5.86 GHz with impedance bandwidth of 270 MHz. Antenna shows gain of 6.828dBi and CORE;ETOION COEFF of 0.35. These characteristics make this antenna suitable for wireless MIMO communications. To deploy the antenna in MIMO system S11, diversity gain, envelope correlation coefficient (ECC) and capacity analysis is also carried out.

  • gamesKEYWORDS

    : Stacked, aperture coupled, MIMO, S11, diversity gain, ECC, capacity, CST MWS’14, MATLAB r’11

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☑ Exact Complex Invariants in 3-D for Classical System

Jasvinder Singh Virdi1 and S.C.Mishra2

1Department of Physics, Lovely Professional University, Phagwara, Punjab, India
2Department of Physics, Kurukshetra University, Kurukshetra-136119, India

1Email:jpsvirdi@gmail.com

  • subtitlesABSTRACT

    Attempts are made to construct three-dimensional complex dynamical invariant by using Lie- algebraic method to study complex dynamical systems on the extended complex phase. Such invariants play an important role in the analysis of complex trajectories with regard to the calculation of semi-classical coherent state propagator in the path integral method.

  • gamesKEYWORDS

    Complex Hamiltonian; Exact complex invariant.

  • subtitlesDOWNLOAD

☑ On rgw-Homeomorphism in Topological Space

Sanjay Mishra

Department of Mathematics, Lovely Professional University, Phagwara, (Punjab)- 144411, India

Email:drsanjaymishra@redifmail.com

  • subtitlesABSTRACT

    In this paper, we first introduce new class of homeomorphism called regular generalized weakly homeomorphism (briefly rgw-homeomorphism) in topological space and after that we compare this new class of homeomorphism with recently introduced generalized form of homeomorphism. Moreover, we study algebraic properties of the family of rgw - homeomorphism in topological space.

  • gamesKEYWORDS

    rgw-homeomorphism; topological space.

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☑ Influence of La-Mg on Optical-Dielectric and Magnetic Properties of Barium Hexaferrite

Talwinder Kaura, Riti Sethib, A. K. Srivastavaa*

aDepartment of Physics, Lovely Professional University, Phagwara, (Punjab)- 144411, India

b Department of Physics, Jamia Millia Islamia, Central University, New Delhi-110025 (INDIA)

*Email:srivastava_phy@yahoo.co.in

  • subtitlesGRAPHICAL ABSTRACT
  • subtitlesABSTRACT

    In the present study, Ba1-x Mgx LaxFe12-xO19 (x =0. 1, 0.2, 0.3, 0.4 and 0.5) hexaferrites are prepared by sol-gel auto combustion method and subsequent heat treatment from 5000C to 9000C. The crystal structure, grain size, optical properties, dielectric properties, thermal properties and magnetic properties are studied by means of X-ray diffraction (XRD), field emission scanning electron microscope (FE-SEM), Fourier transform infrared spectroscopy (FTIR), ultraviolet visible near infrared (UV-Vis-NIR), inductance capacitance resistance meter bridge (LCR meter) , thermo gravimetric analysis (TGA)/ differential thermal analysis (DTA)/differential scanning calorimeter (DSC) and vibrating sample magnetometer (VSM). XRD studies indicate that barium hexaferrite still maintained the hexagonal magneto-plumbite phase after substitution of La-Mg and calcination. DTA studies show that the formation of hexaferrite phase takes place nearly at 8000C. VSM analysis reveals an increase in saturation magnetization, coercivity, retentivity and anisotropy constants with increase in substituent.

  • gamesKEYWORDS

    Magnetic materials; Magnetic properties; Microstructure; Optical properties; Dielectric properties; Fourier transform infrared spectroscopy (FTIR).

  • library_booksHEIGHLIGHTS
    1. (i)We report here the successful synthesis of La-Ma doped Barium hexaferrite using sol gel method.
    2. (ii)There is remarkable change in magnetic properties like retentivity, coercivity and saturation magnetization with temperature.
    3. (iii) Materials show normal ferrite behaviour and band gap increases with substituion.
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☑ Temperature Dependent Structural and Magnetic Behaviour of Zn0.5Ni0.5Fe2O4 Nano-ferrite via Citrate Method

A. K. Srivastava, Dikshu Bansal

Department of Physics, Lovely Professional University, Phagwara, (Punjab)- 144411, India

  • subtitlesGRAPHICAL ABSTRACT
  • subtitlesABSTRACT

    In the present work, magnetic nanoparticles of Zn0.5Ni0.5Fe2O4 ferrite were synthesized using citrate precursor method. These nanoparticles were sintered at different temperatures ranging from 3000C to 10000C. Structural studies were carried out with X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). Single-phase formation of spinel structure with cubic symmetry has been confirmed from the XRD patterns. The particle size and distribution was further checked by transmission electron microscope (TEM).Formation of spinel structure was confirmed from the spectra of FTIR. The investigation shows the increase in particle size with the increase in annealing temperature. The M-H loop at room temperature has been traced using vibrating sample magnetometer (VSM). The absence of magnetic parameters such as remanent magnetization, coercivity, hysteresis of the M-H curve and non zero magnetic moments indicate the existence of superparamagnetism in the magnetic nanoparticles.

  • gamesKEYWORDS

    Ferrite; superparamagnetism; structural properties.

  • library_booksHEIGHLIGHTS
    1. (i) Zn0.5Ni0.5Fe2O4 ferrite is successfully synthesized by sol-gel method
    2. (ii)Superparamagnetic behaviour has been obsered in the synthesized ferrite.
    3. (iii)The grain size of the ferrite lie in nano range.
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☑ Superparamagentic Behaviour of MgFe2O4 Nano-ferrite

A. K. Srivastava, Nishant Mongia

Department of Physics, Lovely Professional University, Phagwara, (Punjab)- 144411, India

  • subtitlesGRAPHICAL ABSTRACT
  • subtitlesABSTRACT

    In the present work, magnesium ferrite (MgFe2O4) nanostructures are fabricated by sol-gel method. Structural studies are carried out using X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The XRD patterns of MgFe2O4 show single-phase formation of FCC spinel structure. The average particle size of samples sintered at different temperatures (300-800°C) is controlled in the nano-range i.e. ~ 10 nm. The crystallinity shows increment with increasing sintering temperature. Formation of spinel structure is confirmed using FTIR. The magnetic measurements are made from M-H hysteresis loops traced at room temperature using vibrating sample magnetometer (VSM). It is found that ferrites in the nanoregime are found to behave as single domain. The low temperature (300°C) sintered ferrite has almost zero coercivity and retentivity which shows superparamagnetic behaviour of the as-prepared ferrite.

  • gamesKEYWORDS

    Ferrite; superparamagnetic; VSM.

  • library_booksHEIGHLIGHTS
    1. (i)The sol-gel method is efficient for synthesizing MgFe2O4 nanoparticles possessing unique spinel structure, superparamagnetic properties and enhanced magnetic properties.
    2. (ii)Apart from size of the particles, the behaviour of nanoferrites also depends upon preparation parameters.
    3. (iii)The samples are resulting in comparatively smaller magnetizations and coercivities as the sintering temperature is lowered.
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