International Journal of
Physical Sciences

  • Abbreviation: Int. J. Phys. Sci.
  • Language: English
  • ISSN: 1992-1950
  • DOI: 10.5897/IJPS
  • Start Year: 2006
  • Published Articles: 2542

IJPS Articles

Strength improvement of a High Performance Fiber Reinforced Concrete (HPFRC) containing local raw materials

September 2014

Improvement of mechanical strength of a High Performance Fiber Reinforced Concrete (HPFRC) containing local raw materials at a cheap rate was investigated in this present work. An experimental study was conducted on different concretes based on dune sand and reinforced by metallic fibers. The concretes studied are formulated based on a Portland Cement (PC), Dune Sand (DS), Dust of Electro-filter (DE), Metallic Fibers...

Author(s): Farida Ait Medjber, Mohammed Saidi, Brahim Safi and Madjid Samar

Comment on "Combined heat and mass transfer by mixed convection magnetohydrodynamic (MHD) flow along a porous plate with chemical reaction in presence of heat source" by Zueco, J. and Ahmed, S., 2010, [Appl. Math. Mech. -Engl. Ed. 31(10), pp. 1217-1230]

September 2014

In this paper, we demonstrate that the previously reported effect of the transverse magnetic field on a steady mixed convective heat and mass transfer flow of an incompressible viscous fluid past an infinite vertical isothermal porous plate considering the induced magnetic field with viscous and magnetic dissipations of energy by Zueco and Ahmed (2010) [Appl. Math. Mech. -Engl. Ed. 31(10), pp. 1217-1230] has some major...

Author(s): Bhupendra Kumar Sharma and Ajit Pratap Singh

Study of miscibility of liquid mixtures with a critical point: A new experiment for a physical chemistry course

August 2014

This paper describes a new experiment for undergraduate students in physical chemistry. This experiment describes a separation process of liquid-liquid extraction using mixtures with a critical point of miscibility. In this experiment, students will learn how to measure solute concentration, and a new liquid-liquid extraction technique that we called Phase Transition Extraction (PTE). In this experiment, a liquid...

Author(s): Filomena Califano, Guram Nozadze, Alexander Ly van Manh and Ahmed Farhat

Electrical properties and crystal structure of Y123, Y358 and Y257/Y211 composite bulk superconductors

August 2014

The Y123, Y358 and Y257 bulk superconductors mixed with various ratio of non-superconducting Y211 (Y2BaCuO5) were synthesized by solid state reaction. The physical properties of pellets were investigated by d.c. four-probes measurement. The crystal structure was determined using powder X-ray diffraction and the characteristic peaks were determined using the Rietveld full-profile analysis method. Results showed that the...

Author(s): Kruaehong T.

Effect of an axial magnetic field on the heat and mass transfer in rotating annulus

August 2014

This study is interested in the effect of an axial magnetic field imposed on incompressible flow of electrically conductive fluid between two horizontal coaxial cylinders. The imposed magnetic field is assumed uniform and constant. The effect of heat generation due to viscous dissipation is also taken into account. The inner and outer cylinders are maintained at different uniform temperatures and concentrations. The...

Author(s): Sofiane ABERKANE, Malika IHDENE, Mourad MODERES and Abderahmane GHEZAL

Some classifications on Kenmotsu manifolds

August 2014

In this paper, we investigate some curvature problems of Kenmotsu manifolds satisfying some certain conditions and we reach some classicifications. We consider -recurrent Kenmotsu manifolds and we show that -recurrent Kenmotsu manifolds are also -Einstein manifolds. Next, we study  -Ricci symmetric Kenmotsu manifolds and we find this manifolds are Einstein manifolds too. In addition, we examine locally -symmetric...

Author(s): Saadet DOÄžAN and Müge KARADAÄž

Analysis and evaluation of differential inductive transducers for transforming physical parameters into usable output frequency signal

August 2014

This paper presents a novel hybrid oscillating inductive sensor circuit converting deflection oscillations into useful signal and thus being used to support an oscillatory circuit mechanism and management of their resulting oscillation in a real-time implementation. This circuit does not only detects and optimizes the deflections produced in an oscillation in instrumentation electronics, but also provide an improved...

Author(s): A. Deji, S. Khan, M. M. Ahmed, J. Chebil and A. H. M. Z. Alam

Optimal transformer allocation in electrical distribution using genetic algorithm

July 2014

The optimization of transformers allocation is a major challenge to the operators of electrical energy distribution in several developing countries. In this research, a Generic Algorithm model for the optimization of transformer allocation in electrical distribution networks is developed. The algorithm employed the principles of selection, crossover and mutation to allocate transformers of different capacities to...

Author(s): Oluwole Charles Akinyokun, Gabriel Babatunde Iwasokun and Akinwale Michael Ojo

Magnetohydrodynamics (MHD) boundary layer stagnation point flow with radiation and chemical reaction towards a heated shrinking porous surface

July 2014

This paper is an investigation of the effects of chemical reaction on two dimensional steady stagnation point flow of an electrically conducting, incompressible, and viscous fluid with radiation towards a heated shrinking porous surface. A chemically reactive species is emitted from the vertical surface into the flow field. The governing partial differential equations are solved using the Newton-Raphson shooting method...

Author(s): E. J. Christian, Y. I. Seini and E. M. Arthur

Internuclear forces: Physical and chemical reasons

July 2014

The arguments, obtained in favor of the hypothesis on internuclear interaction of atoms (offered by author in the preceding publication), are presented. It is proposed an interpretation of physical phenomenon Bragg peak, which is discovered 100 years ago but is not understood hitherto. An extremely simple and natural explanation of chemical covalent bond (which unlikely may be considered satisfactory at present) is...

Author(s): B. A. Mosienko

Optical observation of streamer propagation and breakdown in seed based insulating oil under impulse voltages

July 2014

Increasing demand of electricity and high consumption of natural fuel resources has raised countless challenges for the electricity industry. For years, transformers were equipped with mineral oil for better and lasting performance but the recent uncertainty about the future of oil availability is motivating the researchers to find out the “Green Insulating Oils” for transformers. Thus, green insulating oils...

Author(s): Mohammed I. Qureshi, Abderrahmane Beroual and Essam A. Al-Ammar

An efficient technique for morphing zero-genus 3D objects

July 2014

In this paper, we present an algorithm to morph a zero-genus mesh model to a topologically equivalent one based on spherical parameterization, as it is the natural parameterization method for this kind of objects. Our algorithm starts by normalizing the two objects to the cube of unity, as a preprocessing step. Then, the two normalized models are parameterized onto a common spherical domain. We reposition the points of...

Author(s): A. Elef, M. H. Mousa and H. Nassar

Measurement and modeling of the effect of gamma irradiation on radiofrequency dielectric properties of bovine kidney tissue

June 2014

The effect of gamma irradiation on the radiofrequency dielectric properties of bovine kidney tissue has been investigated using gamma irradiator (Gs 1000), booton (7200) capacitance meter, signal generator (Lodstars SG-416013) and Dielectric cells Mathematic models of the following dielectric structural parameter, Dielectric spread parameter (), dielectric decrement () and Dielectric relaxation time (), were also...

Author(s): E. H. Agba, T .Sombo and T.A Ige

Research in physical properties of AlxGa1-xAs III-V Arsenide ternary semiconductor alloys

June 2014

General description of III-Arsenide semiconductors is presented and significance of the present work is stressed. The electrical and optical properties of III-Arsenide from binary semiconductors are evaluated using the principle of additivity involving quadratic expressions. The electrical and optical properties studied in this group include refractive index, optical polarizability, absorption coefficient and energy...

Author(s): Alla Srivani, Vedam Ram Murthy and G. Veera Raghavaiah

Markov chain model for the dynamics of cooking fuel usage: Transition matrix estimation and forecasting

June 2014

Markov chain models are valuable tools for modeling data that vary over time. They are suitable models to use when modeling the transitions of variables between discrete states over time. In this paper, Markov chain model was applied to the data obtained from 300 households living in the headquarters of three Local Governments (Argungu, Arewa, and Augie) of Kebbi State, Nigeria. The data was information concerning the...

Author(s): Garba S. Adamu and Danbaba A.

Studies on zinc oxide thin films by chemical spray pyrolysis technique

June 2014

Zinc oxide (ZnO) thin films were deposited by chemical spray pyrolysis (CSP) technique using zinc acetate dihydrate solutions on microscopic glass substrates by varying the precursor concentration. The prepared films were characterized structurally and optically, using the powder X-ray diffraction (XRD) and UV analysis and Photoluminescence analysis. Crystallographic properties were analyzed through powder XRD. The XRD...

Author(s): Prabakaran Kandasamy and Amalraj Lourdusamy

Kinematics of the human hand applied to the design of prosthesis

June 2014

This work shows the application of a mechanism of four bars synthetized function used in the development of a prosthetic device with an underacted movement, for its application in people with a mutilation level close to the distal dislocation of the wrist. A methodology is exposed for this, from which the procedure for obtaining the trajectory of the four bars mechanism through the function synthesis, which was...

Author(s): Luis Antonio Aguilar-Pérez, Christopher René Torres-San Miguel, Guillermo Urriolagoitia-Sosa, Luis Martínez-Sáez, José Alfredo Leal-Naranjo, Beatriz Romero-Ángeles and Guillermo Urriolagoitia-Calderón

Study of vibrations by Raman spectroscopy low frequencies of the phase transition in pyridinium picrate (C6H2N3O7)-.(C5H6N)+

May 2014

The spectra of the crystals of pyridine picrate crude formula, C11H8N4O7, in the mid infrared (IR) and Raman are studied as a function of temperature. They show some changes, which allowed us to first track and describe the structural changes (in both directions under the effect of heat treatment) accompanying the phase transition between 358 and 383K observed by DSC, Rx. After gradual cooling, the reversibility of the...

Author(s): AZIZI Abdelkader and MEDDOUR Athmane

Analysis and supervision of the water extraction of a thermal power plant

May 2014

The aim of this paper is to analysis the water treatment process in a thermal power plant (TPP). In fact, we present an application of a supervisory control and data acquisition (SCADA) system. Thus, an example of a SCADA system of the center of RADES in Tunisia was presented. Our contribution in this work consists in the analysis of the water loss in the TPP on the one hand and the supervision of the water extraction...

Author(s): M. N. Lakhoua

Simulation analysis of the effect graded Zn(O,S) on the performance of the ultra thin copper indium gallium diselenide (CIGS) solar cells

May 2014

This paper indicated a numerical modeling of ultra thin copper indium gallium diselenide (CIGS) solar cells. An optimum value of the thickness of the structure has been calculated and it is shown that by optimizing the thickness of the cell, efficiency has been increased and cost of production can been reduced. Numerical optimizations have been done by adjusting parameters such as thickness of the layers and the gap. It...

Author(s): Chihi Adel, Boujmil Mohamed Fethi and Bessais Brahim

Properties of Bertrand curves in dual space

May 2014

Starting from ideas and results given by Özkaldi, Ä°larslan and Yaylı in (2009), in this paper we investigate Bertrand curves in three dimensional dual space D3. We obtain the necessary characterizations of these curves in dual space D3. As a result, we find that the distance between two Bertrand curves and the dual angle between their tangent vectors are constant. Also, well known characteristic property of...

Author(s): Ä°lkay ARSLAN GÜVEN and Ä°pek AÄžAOÄžLU

Angular symmetry of space-time and the spinor representation of Poincaré group

May 2014

In the paper, a relativistic theory is suggested; we add three independent angles to the four coordinates of the Minkowski space that define the (x, t) - position of a moving local observer. These angular coordinates define the orientation of an observer under free rotations and they allow us to introduce the generators of the Poincaré group in the angular representation. Instead of a multi-component wave...

Author(s): R. A. Sventkovsky

Modeling and simulation of watershed erosion: Case study of Latian dam watershed

May 2014

The Latian Dam is one of the important drinking water resources of Tehran, and it also has a role in preventing the flood. It is very important to keep the quality of water and preventing the dam from filling. Considering the special aspects of RUSLE model, it was used for estimating the amount of erosion in the watershed of dam including the sub-basins: Jajrood River, Kond River and Afjeh River, and then compared with...

Author(s): Mirzai M., Sajadi A. and Nazari A.

The first integral method and its application for finding the exact solutions of nonlinear fractional partial differential equations (PDES) in the mathematical physics

April 2014

In this article we apply the first integral method to construct the exact solutions of some nonlinear fractional partial differential equations (PDES) in the sense of modified Riemann–Liouville derivatives, namely the nonlinear fractional Zoomeron equation and the nonlinear fractional Klein- Gordon- Zakharov system of equations. Based on a nonlinear fractional complex transformation, these two nonlinear fractional...

Author(s): Elsayed M. E. Zayed and Yasser A. Amer

Physicochemical characterization and inhibitive performance evaluation of Commiphora kestingii gum exudate in acidic medium

April 2014

Gas chromatographic-mass spectrometry (GCMS), fourier transformed infra-red spectroscopy (FTIR) and physicochemical analysis of Commiphora kestingii gum have been carried out. The corrosion inhibition characteristics of C. kestingii (CK) gum on aluminium in sulphuric acid media were also investigated at 303 and 333K using gravimetric and scanning electron microscopic studies (SEM) method. The study revealed that the gum...

Author(s): Paul Ocheje Ameh

An electrostatic lens system for the deceleration of high intensity heavy ion beams

April 2014

This work focuses on the design and implementation of an electrostatic lens system to produce high-intensity, low-energy ion beams, by means of numerical simulation of the beam trajectories (SIMION 7). The lens design was optimized using the simulation data obtained with a performance characteristics  of the electrostatic lens system. This lens system maintains good beam focal quality for the deceleration of heavy...

Author(s): F. W. Abdelsalam, M. M. Abdelrahman and B. A. Soliman

Theoretical spin assignment and study of the A~100 – 140 superdeformed mass region by using ab formula

April 2014

Using an empirical formula of rotational spectra which consists of two parameters a and b (known as ab formula) and derived from the Bohr-Hamiltonian, we extract the spins of fifteen superdeformed bands observed in the A~ 100-140 mass region. The two parameters "a" and "b" were determined by using a search program to fit the proposed transition energies with their observed values. The calculated...

Author(s): A. S. Shalaby,

Influence of pressure from compression textile bands: Their uses in the treatment of venous human leg ulcers

April 2014

The aim of study was to evaluate pressure distribution characteristics of the elastic textile bandages using two instrumental techniques: a prototype instrument and a load transference. The prototype instrument which simulates shape of real leg has pressure sensors which measure bandage pressure. Using this instrument, the results show that elastic textile bandages presents different pressure distribution...

Author(s): Bachir Chemani and Rachid Halfaoui

On the Bishop curvatures of involute-evolute curve couple in E3

April 2014

In this study, the relations between of the Bishop curvatures of involute-evolute curve couple were examined in . Also, the relation between of the Bishop frames of these curves was given. Moreover,  the relations between of curvature radii of these curves were investigated. Lastly, in the case of these curves were planar curves, some corollaries were obtained. Key words. Bishop frame, Bishop curvatures,...

Author(s): Engin As and Ayhan Sarıoğlugil

Analysis of land development conformity obtained using photogrammetric and remote sensing methods with Geographic Information System (GIS) technology

April 2014

Information regarding spatial management can be obtained using various methods, including satellite and photogrammetric technology. However, different methods give different results in terms of spatial resolution. Nowadays, photogrammetric data used for determining the spatial management usually employs pixels representing 0.25 m; still, the majority of the data are orthophotomaps with pixels representing 0.5 m; whereas...

Author(s): Bogusława Kwoczyńska, Urszula Litwin, Bartosz Mitka, Izabela Piech and Tomasz Salata

Health risk assessment in relation to heavy metals in water sources in rural regions of South East Nigeria

March 2014

Geophysical investigation was carried out to detect the spread of sewage effluent and to locate the sources and delineate migration paths and the extent of leachate plume. The study was to find out the geological formations that are the most conductive layers in the sewage site for the free flow of the contaminants. Soil tests showed that hydraulic conductivity, bulk density and water retention were variable in sewage...

Author(s): Ekere Nwachukwu R., Ihedioha Janefrances N., Eze Ifeanyi S. and Agbazue Vitus E.

Geophysical investigation of the effects of sewage in the soil at university of Nigeria, Nsukka, Enugu State, Nigeria

March 2014

Geophysical investigation was carried out to detect the spread of sewage effluent and to locate the sources and delineate migration paths and the extent of leachate plume. The study was to find out the geological formations that are the most conductive layers in the sewage site for the free flow of the contaminants. Soil tests showed that hydraulic conductivity, bulk density and water retention were variable in sewage...

Author(s): Awalla, C. O. C.

Numerical modeling of transients in gas pipeline

March 2014

A set of equations governing an isothermal compressible fluid flow is analytically and numerically analyzed. The obtained equations are written in characteristic form and resolved by a predictor-corrector lambda scheme for the interior mesh points. The method of characteristics (MOC) is used for the boundaries. Advantages of explicit form of these schemes and the flexibility of the MOC are used for an isothermal fast...

Author(s): Mohand  KESSAL, Rachid BOUCETTA, Mohammed ZAMOUM and  Mourad TIKOBAINI

Application of the erbium-doped fiber amplifier (EDFA) in wavelength division multiplexing (WDM) transmission systems

March 2014

In the work, characteristics of the erbium-doped fiber amplifier (EDFA) are investigated. The amplification and noise figure dependences on different EDFA parameters in a 2.5 Gbit/s one-channel WDM transmission system are simulated and measured. Additionally, simulation of a four-channel 2.5 Gbit/s WDM system containing in-line amplifiers of the type was done in order to investigate the EDFA performance in multichannel...

Author(s): G. Ivanovs, V. Bobrovs, S. Olonkins, A. Alsevska, L. Gegere, R. Parts, P. Gavars and G. Lauks

Investigation of Kenyan bentonite in adsorption of some heavy metals in aqueous systems using cyclic voltammetric techniques

March 2014

Potential application of Kenyan bentonite for adsorption of iron, cobalt, copper, nickel and zinc and for analysis of electroactive species in water from a polluted water course using a 3-electrode potentiostat and cyclic voltammetry was studied. Polished carbon graphite electrodes were used either bare or modified with Kenyan bentonite using an electrochemically inert adhesive to a thickness of about 0.8 mm. These were...

Author(s): Damaris Mbui, Duke Omondi Orata, Graham Jackson and David Kariuki

A phenomenological model for photon mass generation in vacuo

February 2014

A phenomenological model is presented here arguing that photon mass is an induced effect rendered in the form of vacuum potential arising from vacuum natural modes. An elementary vacuum potential is defined as a function of vacuum zero-point fields, which yields an expression for effective photon mass generation. A Lagrangian is constructed for this model which incorporates photons with effective mass in vacuo. It...

Author(s): Masroor H. S. Bukhari

On the nature of electric charge

February 2014

A few hundred years have passed since the discovery of electricity and electromagnetic fields, formulating them as Maxwell's equations, but the nature of an electric charge remains unknown. Why do particles with the same charge repel and opposing charges attract? Is the electric charge a primary intrinsic property of a particle? These questions cannot be answered until the nature of the electric charge is...

Author(s): Jafari Najafi, Mahdi

A model for removing sediments from open channels

February 2014

The problems caused by suspended sediment overloading in open channels are of great importance to the hydraulic engineers. One of the important problems caused by the sediment overloading during flood seasons is the change in bed level and corresponding water level of rivers due to its deposition on the river bed. At the upstream reaches, the bed slope is high, velocity is high and hence the rivers carry large amount of...

Author(s): Hassan A. Omran, Mohammed Y. Fattah and Sadiq Q. Sulaiman

Lehmann Type II weighted Weibull distribution

February 2014

We upgrade on the method used on weighted Weibull model proposed by Azzalini (1985) using the logit of Beta function by Jones (2004) to have Lehmann Type II weighted Weibull model with a view to obtaining a distribution that is more better than both weighted Weibull and Weibull distribution in terms of estimate of their characteristics and their parameter. The weighted Weibull distribution is proposed by slightly...

Author(s): N. I. Badmus, T. A. Bamiduro and S. G. Ogunobi

Metamaterials in microwave applications: A selective survey

February 2014

Recently, metamaterial has grabbed prime focus of research fraternity working in the field of antennas, microwave filters and components design. Many different structures of split ring resonators (SRR) for their respective applications have been reported till date. In all of these findings in some way or other, using metamaterial, drastic reduction in size of the component has been achieved. Thus, the metamaterial can...

Author(s): Vipul Sharma, S. S. Pattnaik and Tanuj Garg

A planar microstrip metamaterial resonator using split ring dual at Ku-Band

February 2014

This paper introduces a new planar microstrip metamaterial resonator, the novelty of this paper lays in its unit cell design. The unit cell is formed by connecting metallic traces of two edge coupled split ring resonators to form the infinity symbol on one side of the substrate, and an array of conducting wires on the other. An RLC equivalent model of the structure is also proposed, it can be advantageous to use this...

Author(s): Nitin Kumar and S. C. Gupta

Silver nanoparticles biogenic synthesized using an orange peel extract and their use as an anti-bacterial agent

February 2014

Synthesis of nanoparticles by green methods with antibacterial properties is of great researchers’ concern in the explored of new pharmaceutical and biomedical products. In this study, we synthesized a new product of nanosized particles of silver, non-toxic economy, clean, and conservator for energy. An environmentally friendly route is used for synthesizing silver nanoparticles (AgNPs) using an orange peel...

Author(s): Manal A. Awad, Awatif A. Hendi, Khalid M. O. Ortashi, Dalia F. A. Elradi, Nada E. Eisa, Lamia. A. Al-lahieb, Shorog. M. Al-Otiby, Nada M. Merghani and Abdelelah A. G. Awad

Development of a multilayer perceptron (MLP) based neural network controller for grid connected photovoltaic system

February 2014

This paper focuses on the development of a controller for grid connected photovoltaic energy conversion system. Control design of a single phase inverter interfacing a photovoltaic generator and an electrical grid is performed, based on Artificial Neural Networks. The developed controller is compared with a Proportional Integral (PI) controller through computer simulation. The obtained results show that the neural...

Author(s): A. Ndiaye, L. Thiaw, G. Sow and S. S. Fall

Simulation of 4Ï€ HPGe Compton-Suppression spectrometer

January 2014

Compton-suppression spectrometer is well suited to the analysis of low levels of radioactive nuclides. Monte Carlo simulations can be a powerful tool in calibrating these types of detector systems, provided enough physical information on the system is known. A simplified Compton-suppression spectrometer model using the Geant–4 simulation toolkit was discussed. The spectrometer model was tested to evaluate photo...

Author(s): M. E. Medhat and Yifang Wang

Vectorial reduced differential transform (VRDT) method for the solution of inhomogeneous Cauchy-Riemann system

January 2014

It is well known that initial-value problem for the Cauchy-Riemann system is ill-posed and the problem with such Hadamard instability cannot be solved unless the initial data are analytic. In this paper, we present the vectorial reduced differential transform (VRDT) method to solve initial-value problem for the inhomogeneous Cauchy-Riemann system with analytic data. The VRDTM solution vector achieved is in the form of...

Author(s): Tahir Naseem and Muhammad Tahir

A four-point fully implicit method for the numerical integration of third-order ordinary differential equations

January 2014

In this paper, we derived a continuous linear multistep method (LMM) with step number k = 4 through collocation and interpolation techniques using power series as basis function for approximate solution. An order-seven scheme is developed which was used to solve the third-order initial value problems (IVPS) in ordinary differential equation without first reducing to a system first-order. Taylor’s series algorithm...

Author(s): Awoyemi D. O., Kayode S. J. and Adoghe L. O.

Study of optical constants in Se- In –Pb thin films of chalcogenide glasses

January 2014

Bulk glasses of Se75 In25-x Pbx (when n = 0, 4, 6, 10) systems and thin films have been prepared by the conventional melt quenching technique and by thermal evaporation technique, respectively. The optical constants (absorption coefficient (α), refractive index (n), extinction coefficient (k)) have been studied for Se-In-Pb thin films as a function of photon energy in the wavelength range (300-900 nm). Spectral...

Author(s): Preeti Dwivedi and Rita Awasthi

Determination of some physical and mechanical properties of Calabrian pine (Pinus brutia Ten.) trees grown in the Denizli area of Turkey

December 2013

The most extensive distribution of Calabrian pine (Pinus brutia Ten.) trees in the world is found in Turkey. This species varies depending on the regions in Turkey for growth features, such as climate, soil structure and slope. In this study, the technological properties of Calabrian pine (Pinus brutia Ten.) grown in the Denizli area were studied. Within the scope of the study, their physical properties, such as...

Author(s): Kadir Ozkaya

Application of vertical electrical soundings to characterize aquifer potential in Ota, Southwestern Nigeria

December 2013

A knowledge of hydrogeophysical parameters of aquifers is essential for groundwater  resource assessment, development and management. Traditionally, these parameters are estimated using pumping test carried out in boreholes or wells; but this is often costly and time consuming. Surface geophysical measurements can provide a cost effective and efficient estimates of these parameters. In the present work,...

Author(s): A. P. Aizebeokhai and O. A. Oyebanjo

The application of some biodiversity indices in the Tortum Stream, Erzurum, Turkey

December 2013

The aim of the present study was to investigate biodiversity index, dominancy index and equivalence index of diatom community in the Tortum Stream and its tributaries. Diatom samples were collected from nine stations on the main river and tributaries between July 2012 and May 2013. A total of 36 taxa of Bacillariophyceae were identified. Dominant species was Cocconeis placentula in all stations. Biodiversity...

Author(s): Ozden FAKIOGLU, Mine KOKTURK and Muhammed ATAMANALP

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