Natural & Applied Sciences

Research Papers/Topics in Natural & Applied Sciences

Internet of Things

                                                                    ABSTRACT The internet of things which is the current wave in the development of the internet has been around for some time. It is specifically about connecting objects (things) that would not ordinarily be considered worthy for internet connectivity. Things such as houses, cars, caps, ACs, and just think of it can be connected to the internet by embed...

Antibiogram of Carbapernem Resistant Acinetobacter Baumanii Isolated from Clinical Samples of Pregnant Women

TABLE OF CONTENTSPage title                                            iCertification                                            iiDedication                                            iiiAcknowledgement                                         ivAbstract                                             vList of tables            ...

Artificial Intelligence Bionic Technology

AbstractWith  the  ongoing  advancement  of  technology  and  innovation,  bionic  technology  is  also rapidly evolving and becoming more lifelike in their form and function and indeed, changing lives across the world by removing the physical barriers to empower the disabled people. Presently, in most of the developing countries, many amputees are facing challenges to access bionic technologies due  to  its  availability&n...

Factors Influencing the Intention and Adoption of E-Wallet in Malaysia

Table of contentsCHAPTER ONE 4INTRODUCTION 41.1 Background of the Study 41.2 Problem Statement 61.3 Research Question 71.4 Research Objective 81.5 Key Definitions 81.6 Organization of the Thesis 91.7 Chapter Summary 10CHAPTER TWO 11LITERATURE REVIEW 112.1 Unified Theory of Acceptance and Use of Technology (UTAUT) 112.2 Technology Acceptance Model (TAM) 122.3 Hypotheses Development 122.3.1 Perceived Usefulness 122.3.2 Perceived Ease of Use 132.3.3 Perceived Trust 132.3.4 Social Influence 142.3...

Comparison of Different Properties of Paper and Pulp From Various Agrowaste Biomass ( Sugarcane bagasse, coir Fibre and maize stalks)

This study presents the comparison of various properties of paperboard from various Argo wastes. The agro wastes under study in this project include sugarcane bagasse, coir fiber (coconut husk) and maize stalk. The properties differ as a result of the composition and structure of the biomass that is put into consideration that is the amount of cellulose, hemicellulose and lignin available in the agro waste biomass. Paper is basically made from cellulose fibers therefore the project aims to ...

Investigations of Nano-crystalline Sr0.5Ba0.5Nb2O6 and Bulk Ceramics Synthesized by a Polymerization Method using PEG400

Abstract.J. Eur. Ceram. Soc. 39 (2019) 1156–1163. (DOI: 10.1016/j.jeurceramsoc.2018.11.043). Nano-crystalline Sr0.5Ba0.5Nb2O6 was synthesized by a one-pot method using PEG400 and citric acid. Calcination of the (Sr,Ba,Nb)-gel at 600 °C leads to Sr0.5Ba0.5Nb2O6 with a crystallite size of 24(2) nm and a specific surface area of 38.5(10) m2 g-1. Sintering upto 1325 °C leads to ceramics with globular or irregular-shaped grains and average grain sizes between 1.3 and 2.4 μm, whereas higher te...

Preparation and Characterization of Nano-sized Magnesium Ferrite Powders by a Starch-gel Process and Corresponding Ceramics

Abstract:J. Mater. Sci. 48 (2013) 6509–6518. (DOI: 10.1007/s10853-013-7447-x).The synthesis and characterization of nano-sized MgFe2O4 by a starch-gel method is described herein. A phase-pure nano-sized MgFe2O4 powder (1a) was obtained after calcining a (MgFe)-starch gel at 550 °C. The powder has a specific surface area of 60.6 m2/g and a crystallite size of 9 nm. TEM investigations reveal particles in the range of 7 to 15 nm. The activation energy of the crystallite gr...

BaGeO3 as Sintering Additive for BaTiO3-MgFe2O4 Composite Ceramics.

Abstract:RSC Adv. 5 (2015) 71491 (Open Access, DOI: 10.1039/c5ra12312g).BaTiO3-MgFe2O4 composites (30 wt.% MgFe2O4) with a small addition of BaGeO3 as a sintering additive were synthesized by a one-pot Pechini-like sol-gel process. Nano-crystalline composite powders with a crystallite size of about 10 nm were obtained after reaction at 700 °C for 1 h. Magnetic investigations suggest that the nano-powder is in its superparamagnetic state at room temperature. The addition of BaGeO3 leads to an...

Thermoanalytical, Optical, and Magnetic Investigations on Nanocrystalline Li0.5Fe2.5O4 and Resulting Ceramics Prepared by a Starch-based Soft-chemistry Synthesis.

Abstract. J. Solid State Chem. 287 (2020) 121380. (DOI: 10.1016/j.jssc.2020.121380).Nanocrystalline Li0.5Fe2.5O4 was prepared by a starch-based soft-chemistry synthesis. Calcining of the (LiFe)-gel between 350 and 1000 °C results in Li0.5Fe2.5O4 powders with crystallite sizes from 13 to 141 nm and specific surface areas between 35 and 7.1 m2 g-1. XRD investigations reveal the formation of ordered Li0.5Fe2.5O4. Sintering between 1050 and 1250 °C leads to ceramics with relative densities o...

Magnetic and Optical Investigations on LaFeO3 Powders with Different Particle Sizes and Corresponding Ceramics

Abstract.Solid State Ionics 249–250 (2013) 1–5. (DOI: 10.1016/j.ssi.2013.07.001). The optical and magnetic properties of nano-LaFeO3 powders prepared by a starch assisted soft-chemistry synthesis and corresponding ceramics have been investigated. Magnetic measurements on LaFeO3 powders with crystallite sizes of 37−166 nm showpronounced magnetization hysteresis loops. Measurements at 300 K reveal that the coercivity (Hc) of 19−32 kOe depends on the crystallite size, whereas the low ...

Synthesis and Characterization of Nano-LaFeO3 Powders by a Softchemistry Method and Corresponding Ceramics

Abstract. Solid State Ionics 231 (2013) 43–48. (DOI: 10.1016/j.ssi.2012.10.017).The preparation of a nano-sized LaFeO3 powder by a soft-chemistry method using starch as complexing agent is described herein. Phase evolution and development of the specific surface area during the decomposition process of (LaFe)-gels were monitored up to1000 °C. A phase-pure nano-sized LaFeO3 powder with a high specific surface area of 25.7 m2/g and a crystallite size of 37 nm was obtained after calcining ...

Crystallite Growth, Phase Transition, Magnetic Properties, and Sintering Behaviour of Nano-CuFe2O4 Powders Prepared by a Combustion-like Process

Abstract.J. Solid State Chem. 213 (2014) 57–64. (DOI: 10.1016/j.jssc.2014.02.010). The synthesis of nano-crystalline CuFe2O4 powders by a combustion-like process is described herein. Phase formation and evolution of the crystallite size during the decomposition process of a (CuFe2)-precursor gel were monitored up to 1000 °C. Phase-purenano-sized CuFe2O4 powders were obtained after reaction at 750 °C for 2 h resulting in a crystallite size of 36 nm, which increases to 96 nm after calcin...

Smart Home Energy Management System Using Arduino

AbstractHome automation system is a system that controls by smart device using a mobile application. It can control the home appliances such as light, fans, air conditions, and smart security locks etc. Bluetooth or wi-fi technology will be used to control the things remotely.  Many people were thinking about that technology is taking a really huge part of our lives. It does! we’re living in a modern generation where smart and intelligent systems are necessary to be there wherever w...

Synthesis, Phase Evolution and Properties of Phase-pure Nanocrystalline BiFeO3 Prepared by a Starch-based Combustion Method

Abstract.J. Alloys Compd. 590 (2014) 324–330. (DOI: 10.1016/j.jallcom.2013.12.120). The preparation of phase-pure nano-sized BiFeO3 by a combustion-like method using starch as complexing agent is described herein. Phase evolution and development of the crystallite size during the synthesis were monitored depending on the heat treatment and the composition of the (BiFe)-gels. Phase-pure BiFeO3 was obtained at a low heating rate and calcination temperatures between 500 ...

Investigations on Bi25FeO40 Powders Synthesized by Hydrothermal and Combustion-like Processes

Abstract. J. Solid State Chem. 217 (2014) 50–56. (DOI: 10.1016/j.jssc.2014.05.006).The syntheses of phase−pure and stoichiometric iron sillenite (Bi25FeO40) powders by a hydrothermal (at ambient pressure) and a combustion−like process are described. Phase−pure samples were obtained in the hydrothermal reaction at 100 °C (1), whereas thecombustion−like process leads to pure Bi25FeO40 after calcination at 750 °C for 2 h (2a). The activation energy of the crystallite growth proces...


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