bluuebunny/crossref_metadata_2025 huggingface dataset:
Electrochemical Properties of N'-Ferrocenylmethyl-N'-Phenylbenzohydrazide in Aqueous and Organic Mediums
Authors: Nacer Salah Neghmouche , Lanez Touhami
Published: December 2022

We carried out a detailed study of the kinetics of oxidation of N'-ferrocenylmethyl-N'-phenylbenzohydrazide (FcX) to ferrocenium ion (FcX+) in aqueous and organic mediums. This study using cyclic (CV) and rotating disk electrode (RDE) voltammetry showed that the FcX/FcX+ redox couple is reversible. The N'-ferrocenylmethyl-N'-phenylbenzohydrazide and ferrocenium ion diffusion coefficients (D) were calculated from these results. In addition, the electron transfer rate constant and the exchange current density for the oxidation of ferrocene were determined. A comparison of the kinetic data obtained from the two electrochemical techniques appears to show that the data from the RDE experiments are more reliable because they are collected under strict mass transport control.
Connective Eccentric Index of an Infinite Family of Linear Polycene Parallelogram Benzenoid
Authors: Farahani Mohammad Reza
Published: December 2022

Let G=(V, E) be a graph, where V(G) is a non-empty set of vertices and E(G) is a set of edges.We defined dv denote the degree of vertex v∈V(G). The Eccentric Connectivity index ξ(G) and theConnective Eccentric index Cξ(G) of graph G are defined as ξ(G)= ∑ v∈V(G)dv x ξ(v) and Cξ(G)=ξ(G)= ∑ v∈V(G)dv x ξ(v)- where ε(v) is defined as the length of a maximal path connecting a vertex v toanother vertex of G. In this present paper, we compute these Eccentric indices for an infinite family oflinear polycene parallelogram benzenod by a new method.Keywords: Molecular graphs; Linear polycene parallelogram; Benzenoid; Eccentric connectivityindex; Connective eccentric index
Reflection of Surface Spin Waves from the Interface of Uniaxial and Biaxial Ferromagnets in a Planar Magnetic Field
Authors: Reshetnyak S.O. , Nastenko M.Y. , Berezhinsky A.S.
Published: December 2022

The article investigates the process of reflection of surface spin waves passing through the interface of uniaxial and biaxial ferromagnets in a planar external magnetic field directed along the hard axis of ferromagnet. The problem is solved using the spin density formalism and the Landau-Lifshitz equations for the case of the absence of dissipation in the system. Geometrical optics formalism is used to describe the processes of refraction of surface spin waves propagating in the ferromagnetic medium with non uniform distribution of magnetic parameters. Quantum mechanical approach is used for calculation of the amplitudes of reflected and transmitted waves. It is shown that spin wave birefringence phenomenon appears at the interface of two uniform ferromagnetic components. Frequency and field dependencies of reflection coefficients for different branches of spin waves are obtained in the study. It is shown that it is possible to change the “optical” parameters of the system by only changing a magnitude of the external homogeneous magnetic field. It is also shown that reflection amplitude depends heavily on the angle of incidence.
Study of the Structural, Morphological and Electrical Properties of WO3 Nanopowders which Use as Gas Sensors
Authors: Ali Malek , Hbous Mayada
Published: December 2022

nanopowders of tungsten oxide (WO3) have been prepared by high energy ball-milling for various spans of mill time (1-18 h). The crystal structure, surface morphology of the prepared WO3 nanopowder were characterized by X-ray diffraction and scanning electron microscope. Thick films of WO3 nanopowders were prepared by printing painting chemical method to use them as gas sensors for methanol vapor at different operating temperatures, Their I-V characteristics were studied by using devices KEITHLEY 237. The effect of the milling time on the crystal structure, surface morphology, and electrical properties are reported.
Effect of Mould Temperature and Melt Treatment on Properties of an AlSi9 Cast Alloy - Thermal and Microstructural Investigations
Authors: Ait El Haj Badiâ , Bouayad Aboubakr , Alami Mohammed
Published: December 2022

In this study we used the cast TATUR samples that promotes the formation of an AlSi alloy porosity through a variable temperature gradient from top to bottom of the specimen. The die (permanent mold) was instrumented by thermocouples in order to follow the cooling of the specimen in several emplacements. Thermal analyses via cooling curves have been correlated to the microstructural data (SDAS measurement). Samples were cut from all castings and analyzed by optical microscopy in order to get the Secondary Dendrite Arm Spacing (SDAS) variation in function of cooling rates in the casting. The present work shows the effect of various pre-heating mould temperature and melt treatment on secondary dendrite arm spacing.
Theoretical Study of Ferroelectric Triglycine Sulphate (TGS) Crystal in External Electric Fields
Authors: Upadhyay Trilok Chandra , Nautiyal Ashish
Published: December 2022

A modified two sub-lattice pseudospin-lattice coupled mode model of Mitsui et al [Phys. Rev., 111 (1958) 1259] by adding third, fourth order phonon anharmonic interaction and external electric field terms has been applied to ferroelectric triglycine sulphate crystal. Electric field dependence of ferroelectric, dielectric and acoustical properties has been studied. With the help of double time temperature dependent Green’s function method, expressions for shift, width, soft mode frequency, dielectric constant, loss tangent and acoustic attenuation have been derived. Numerically calculations have been made and results have been compared with experimental data reported by Bye et al [Ferroelectrics 4 (1974) 243] and Shreekumar et al [Ferroelectrics 160 (1994) 23] for TGS crystal and a good agreement has been observed.
Computational and Experimental Studies on the Inhibitive Effects of Newbouldia laevis Extract and Magnetic Fields on Copper Corrosion in Aqueous Acidic Media
Authors: Kelechukwu B. Okeoma
Published: December 2022

A ploycrystaline copper (99.99%) coupons of dimension 1x2x5 cm in which a hole of diameter 0.5cm drilled was used. Before all measurements, the coupons were polished successively with metallographic emery paper between (600 and 1200) grits, then washed with doubly distilled water, degreased with acetone and again washed using distilled water and finally allowed to dry in air at room temperature. Explanation of the effects of magnetic fields on inhibition process using the chemical quantum calculations. The dipole moment is the product of a charge and distance of separation of the charges in an atom or molecule. Any process which can cause change in the alignment of the dipoles on the surface of the corroding metal systems can facilitate an increase in inhibition process. The magnetic field acts on the dipoles such that it aligns the charges on the metal thereby providing the needed charge types at the required point. This explains the graph on figure 1 which shows an increase in inhibition efficiency in the presence of magnetic fields.
Evaluation of Optical Model Potential Using Neutron Induced Cross Section Reaction for Spherical Uranium-238 Isotope up to 20MeV
Authors: Al-Alawy Iman Tarik , Ali Ronak Ikram
Published: December 2022

The evaluation are based on mainly on the calculations of the nuclear optical model potential and relevant parameters are collected and selected from References Input Parameter Library (RIPL) which is being developed under the international project coordinated by the International Atomic Energy Agency (IAEA). The analyzing of a complete energy range has done starting from threshold energy for each reaction. The cross sections are reproduced in fine steps of incident neutron energy with 0.01MeV intervals with their corresponding errors. The recommended cross sections for available experimental data taken from EXFOR library have been calculated for all the considered neutron induced reactions for U-238 isotopes. The calculated results are analyzed and compared with the experimental data. The optimized optical potential model parameters give a very good agreement with the experimental data over the energy range 0.001-20MeV for neutron induced cross section reactions (n,f), (n,tot), (n,el), (n,inl), (n,2n), (n,3n), and (n,γ) for spherical U-238 target elements.
Investigation of Nutrient Elements in Cucurbita pepo Using Atomic Absorption Spectrometry
Authors: Harichan Sasenarine , Verma Vishwa Nath
Published: December 2022

There are a number of factors to keep our health in good condition. One of them is the role of the proper amount of nutrient metals which play the important role in many reactions in the body and it becomes increasingly evident that keeping a balance level of nutrient metals in every organ is very important for maintaining a healthy body, although metals comprise only a fraction of total body weight (mg). They play crucial role for many body functions in the metabolic regulations of the human body including transporting oxygen, normalizing the nervous system. The present investigation is focused to find out the different nutrient metals that exist in the vegetable Cucurbita pepo (squash) a source of natural nutrient metals abandance and to determine the relative concentration of each metal element. Investigation has been performed on the skin, the flesh, the seed, the leaves, the stems and the roots of squash to determine the relative levels of concentrations of various metals such as elements such as Al, Ca, Cd, Co,Cr, Fe,K, Mg, Mn, Na, Ni, Pb and Zn. The Atomic Absorption Spectrometry technique is used. The proper vegetable consumption can improve the mineral and trace metal regulation and reduce cardiovascular diseases and certain cancer risks.
Synthesis and Biological Evaluation of some Novel Pyrano[2,3-d]Pyrimidine Derivatives
Authors: Talpara Pratik K. , Dubal Guarang G. , Shah Viresh H.
Published: December 2022

The synthesis of novel Pyrano[2,3-d]pyrimidine derivatives, had been synthesized by three component domino Knoevenagel hetero Diels-Alder reaction. The products were assayed for their in vitro biological assay antibacterial activity against with two Gram-positive bacteria Staphylococcus aureus MTCC-96, Streptococcus pyogenes MTCC 443, two Gram-negative bacteria Escherichia coli MTCC 442, Pseudomonas aeruginosa MTCC 441 and three fungal strains Candida albicans MTCC 227, Aspergillus Niger MTCC 282, Aspergillus clavatus MTCC 1323 taking ampicillin, chloramphenicol, ciprofloxacin, norfloxacin, nystatin, and griseofulvin as standard drugs. Among the various synthesized heterocyclic compounds, 1b, 1c and 1g are display broad spectrum antibacterial and antifungal activities against both gram-positive and gram-negative bacteria as compared with standard drugs.
Probability of Solar Flares Turn out to Form a Coronal Mass Ejections Events due to the Characterization of Solar Radio Burst Type II and III
Authors: Hamidi Zety Sharizat
Published: December 2022

The solar flare and Coronal Mass Ejections (CMEs) are well known as one of the most massive eruptions which potentially create major disturbances in the interplanetary medium and initiate severe magnetic storms when they collide with the Earth‟s magnetosphere. However, how far the solar flare can contribute to the formation of the CMEs is still not easy to be understood. These phenomena are associated with II and III burst it also divided by sub-type of burst depending on the physical characteristics and different mechanisms. In this work, we used a Compound Astronomical Low-cost Low-frequency Instrument for Spectroscopy in Transportable Observatories (CALLISTO) system. The aim of the present study is to reveal dynamical properties of solar burst type II and III due to several mechanisms. Most of the cases of both solar radio bursts can be found in the range less that 400 MHz. Based on solar flare monitoring within 24 hours, the CMEs that has the potential to explode will dominantly be a class of M1 solar flare. Overall, the tendencies of SRBT III burst form the solar radio burst type III at 187 MHz to 449 MHz. Based on solar observations, it is evident that the explosive, short time-scale energy release during flares and the long term, gradual energy release expressed by CMEs can be reasonably understood only if both processes are taken as common and probably not independent signatures of a destabilization of pre-existing coronal magnetic field structures. The configurations of several active regions can be sourced regions of CMEs formation. The study of the formation, acceleration and propagation of CMEs requires advanced and powerful observational tools in different spectral ranges as many „stages‟ as possible between the photosphere of the Sun and magnetosphere of the Sun and magnetosphere of the Earth. In conclusion, this range is a current regime of solar radio bursts during CMEs events.
Activated Charcoal Supported Cadmium Doped TiO2 for Photocatalytic and Antibacterial Applications
Authors: Prabha S. , Chandraboss V.L. , Kamalakannan J. , Senthilvelan S.
Published: December 2022

The photocatalytic activity was studied under UV light using AC-Cd/TiO2 prepared via precipitation method and characterized by powder X-ray diffraction (XRD) , high resolution scanning electron micrographs (HR-SEM) with energy dispersive X-ray analysis (EDX), photoluminescence (PL) and Fourier transform Raman analysis (FT-RAMAN). The enhanced photo catalytic activity of the AC-Cd/TiO2 is demonstrated through photodegradation of methylene blue under UV light radiation at 365 nm. The mechanism of photocatalytic effect of AC-Cd/TiO2 nanocomposite material has been discussed Further its antibacterial activity against two gram positive and two gram negative bacterial strain is studied.
Synthesis and Characterization of Mineral Wollastonite Particulate Filled Vinyl-Ester Resin Composites
Authors: Amarababu B. , Pandu Rangadu V.
Published: December 2022

In the present research presents influence of coupling agent 1 % triethoxymethyl silane sprayed on to the wollastonite particulate powder before it dispersed into the vinylester/composites. Firstly two different composites were developed in which wollastonite is filled with vinylester resin and same wollastonite was sprayed with coupling agent 1 % triethoxymethyl silane then filled with vinylester resin. The particle functionalization with a bi-functional coupling agent 1 % triethoxymethyl silane was observed to have a significant effect on the curing process and subsequent physical properties of the composites. Wollastonite functionalization favors the composite fabrication with a lower curing temperature as compared to the as-received particle filled vinyl ester resin composites. Thermogravimetric analysis showed an increased thermo-stability in the particles functionalized filled vinyl ester resin composites as compared to the unmodified particle filled counterparts. The uniform particle dispersion and the chemical bonding between filler and vinyl ester resin matrix were found to contribute to the increased thermal stability and enhanced tensile strength and modulus.
Effect of Equipolar Endgroup of a Molecule on Mesomorphic-Isotropic Transition Curve
Authors: Solanki Ravindra , Patel R.B.
Published: December 2022

A Homologous series:RO-C6H4-CH=CH-COO-C6H4-CO-CH=CH-C6H4-OC18H37(n) (para) of chalconyl novel ester of dual character as thermotropic and lyotropically bioactive is synthesized and studied with a view to understand and establish the relation between mesomorphism and molecular structure on the basis of molecular rigidity and flexibitity through thermotropic liquid crystalline (LC) state. Novel series consists of thirteen homologues of which four homologues (C1 to C4) are non liquid crystal (NLC) and the rest of the homologues (C5 to C18) are thermotropically enantiotropic nematic without exihibition of smectic property. Thermometric transition temperatures and textures of nematogenic phase are determined by an optical polarizing microscopy equipped with a heating stage (POM).Textures of nematic phase are threaded or schilieren. Transition temperatures of novel homologues are relatively lower than the transition temperature of corresponding dimeric trans n-alkoxy cinnamic acid. Cr-N/I and N-I transition curves behaves in normal manner with negligible abnormality at C18 homologue in phase diagram of a series.Analytical and spectral data conforms the molecular structure of homologues. Thermal stability for nematic is 121.88°C whose degree of mesomorphism vary minimum from 4.0°C to a maximum of 34.0 °C, and hence novel series is of middle ordered melting type, Group efficiency order for-OC18H37 tail groups (series-1&Y) is highest irrespective of type of ester group –COO-and CH=CH-CO derived for nematic.
Concentration, Temperature and Kinetic Studies of Kola nitida Leaves Extract in Corrosion Prevention
Authors: Adebayo O.L. , Ajayi Morenike Grace , Daodu Ayorinde Kayode
Published: December 2022

Weight loss test method was used to study the inhibition and adsorption properties of kola nitida leaves extract addition on corrosion inhibition efficiency of mild steel in 2M HCl solution for various concentration, exposure time and working temperature. The results showed that ethanolic extract of kola nitida leaves is a potential inhibitor for the corrosion of mild steel in acidic medium. The corrosion rate of mild steel in 2M HCl decreases with increasing in the concentration of the extract. The inhibition efficiency increases progressively as the concentration of the extract increases but decreases with rise in temperature and exposure time. The highest inhibition efficiency observed in the presence of the extract was 88.51%. The kinetics of the reaction in the presence of the extracts revealed that it follows a first order reaction and the half life increases as the concentration of the extract increases. Adsorption studies revealed that Langmuir adsorption isotherm is the best adsorption model applicable to the adsorption of the extract on mild steel surface.
Seasonal Variation of Heavy Metals in Playgrounds of Public Schools within Owerri Metropolis, Imo State, Nigeria
Authors: Ngozi Verla Evelyn , Wirnkor Verla Andrew , Louis Ugwulor
Published: December 2022

Knowledge of variation in metal concentrations of playground soil in dry and rainy season could assist in controlling metal accumulation in children if playtime is regulated according to seasons. The present investigation was designed to find out the existence and trend of such variation. Thirty six surface soil samples from nine playgrounds of Owerri metropolis were collected during the dry season and rainy seasons of 2012 and 2013 and were digested in Pyrex glassware using nitric acid. Total heavy metal concentration was determined by AANALYST 400 Perkin Elmer absorption spectrophotometer and coefficient of variation was used to categorize variability. Results demonstrated significant seasonality for all five heavy metals with major variability observed between dry and the rainy season. Metal concentrations showed zinc as highest metal in both seasons whereas cobalt was lowest metal with Ni occasionally being lowest in the rainy season. The variation of metals concentrations in playground soil especially in the rainy season may add to the body burden of the children, and therefore reduced hours of play during this season is recommended.
Effects of TiO2/SiO2 Reinforced Nanoparticles on the Mechanical Properties of Green Hybrid Coating
Authors: Gobara Mohammed
Published: December 2022

Titanium and silica oxides nanoparticles were introduced into hybrid silica sol–gel/epoxy coating to enhance the mechanical properties of coatings. Titanium dioxide (TiO2) and silica oxide (SiO2) were chemically synthesised before adding to the prepared silica sol gel coating. X-ray diffraction (XRD), Energy-dispersive x-ray analysis (EDX) and Transmission Electron microscope (TEM) were used to characterize the prepared nanoparticles. The coating was then applied to 3003 aluminium alloy (AA3003) surface. The adhesion performance of different sol gel coating compositions was investigated using shear test to define the influence of nanoparticles on adhesive strength of the coating. The Rockwell C hardness test was used to study the micro-hardness of different compositions of sol gel coating. Also, contact angel was used to investigate the hydrophobicity of the coatings. The results showed that there was a significant improvement of the adhesion performance of hybrid silica sol gel coating due to addition of TiO2 and the hydrophobicity of sol gel coating was increased due to addition of SiO2 nanoparticles.
Development of the UV Spectrophotometric Method of Azithromycin in API and Stress Degradation Studies
Authors: Bhimani Sandip , Sanghvi Gaurav , Pethani Trupesh , Dave Gaurav , Airao Vishal , Sharma Tejas , Sheth Navin , Vaishnav Devendra
Published: December 2022

Azithromycin (AZI) is a semi-synthetic macrolide antibiotic drug, effective against a wide variety of bacteria. The present study describes a simple, accurate, reproducible and precise UV Spectrophotometric method for the estimation of AZI (pH 6.8 Phosphate buffer). The absorbance maximum (λmax) for AZI was found to be 208nm. The method reveals high sensitivity, with linearity in the 10 µg/ml to 50 µg/ml range. The lower limit of detection was found to be 1.6µg/ml and the limit of quantification was found to be 5µg/ml. All the calibration curves demonstrated a linear relationship between the absorbance and concentration, with the correlation coefficient higher than 0.99. The % recovery was found to be 99.72%. AZI was also subjected to stress degradation under different conditions recommended by the International Conference on Harmonization (ICH).
Synthesis, Spectroscopic Investigation and Computational Studies of 2-Formyl-4-(Phenyldiazenyl)Phenyl Methyl Carbonate and 4-((4-Chlorophenyl)Diazenyl)-2-Formylphenyl Methyl Carbonate
Authors: Arokiasamy A. , Manikandan G. , Thanikachalam V. , Gokula Krishnan K.
Published: December 2022

Two new compounds namely 2-formyl-4-(phenyldiazenyl)phenyl methyl carbonate (FPMC) and 4-((4-chlorophenyl) diazenyl)-2-formylphenyl methyl carbonate (CFPMC) have been synthesized and have characterized using FT-IR, FT-Raman, 1H and 13C NMR techniques. Computational optimization studies have been carried out using Hatree–Fock (HF) and Density Functional Theory (DFT–B3LYP) methods with 6–31+G(d, p) basis set of Gaussian 09W software. The stable configuration of the title compounds were achieved theoretically by potential energy surface scan analysis. The complete vibrational assignments were performed on the basis of total energy distribution (TED) and natural bonding orbital (NBO) have been studied. Various parameters such as EHOMO, ELUMO,total energy, dipole moment, polarizability, first order hyperpolarizability, zero–point vibrational energy as well as thermal properties were analyzed and reported for the title compounds.
Effect of Automotive Side Member Materials on the Head Injury Criteria (HIC) and Chest Severity Index (CSI) of Adult Passenger
Authors: Salwani M.S. , Ali Aidy , Sahari B.B. , Nuraini A.A.
Published: December 2022

This paper presents the results for Head Injury Criteria (HIC) and Chest Severity Index (CSI) of an adult occupant in frontal impact. The component being studied is side member as impact energy absorber. Steel side member is used as the benchmark material, whereas aluminum alloy is used as lightweight material. Crash analyses are conducted using nonlinear finite element analysis software Ls-dyna. The effect of different types of aluminum alloy and component thickness on the HIC, CSI, weight and energy absorbed is assessed and discussed. A cost function is then formulated with the geometrical average method to solve the multi-objective problem. The HIC36 and CSI are set as minimum requirements in the optimization. The materials used was Aluminium alloy of AA 5182 AA5751. It was found that AA5751 with inner and outer thickness of 2.8 mm and 4.9 mm respectively, provides a reduction in mass of 1.03 kg compared with steel and has energy absorbed of 11.9 kJ. The lowest values of HIC36 and CSI obtained are 1146 and 665.4 respectively.
Study of Mesomorphism in Isomeric and Nonisomeric Linear and Nonlinear Chalconyl Series
Authors: Sharma Vinay S. , Patel R.B.
Published: December 2022

A novel nonlinear chalconyl homologous series of ester: RO-C6H4-COO-C6H4 (m)-CO-CH:CH-C6H4-OC16H33(n) (para) have been synthesized and studied with a view to understand and establish the relation between thermotropic liquid Crystal (LC) properties and geometrically nonlinear shaped molecular structure. Homologous series consists of thirteen members ( C1 to C18) whose enantiotropic nematogenic mesomorphism commences from C6 homologue without exhibition of smectic property. C1 to C5 homologues are nonmesomorphic. Transition temperatures and textures of homologues were determined by an optical polarising microscopy equipped with a heating stage (POM). Transition curves of a phase diagrams (Cr-N/I and N-I) behaved in normal manner. N-I transition curve exhibited odd-even effect. Textures of a nematic phase are threaded or schlieren. Analytical and spectral data supported molecular structures of homologues. Thermal stability for nematic is 104.5°C whose degree of mesomorphism vary minimum of 13.0°C to maximum of 37.0°C. Group efficiency order for nematic is derived by comparing present novel series with structurally analogous other homologous series. Thus, homologous series of present investigation is nematogenic with absence of smectic property and of middle ordered melting type with considerable degree of mesomorphism.
Water Quality of the Surfaces Waters of the Barlinek Lake of the during Stagnation Time of 2008
Authors: Daniszewski Piotr
Published: December 2022

To estimate differentiation of water chemistry in reservoirs of Barlinek Lake, of the during stagnation time of 2008. In arbitrary appointed times 19 physical and chemical indicators of water quality were determined to evaluate general status and water condition (temperature, pH, concentration of dissolved oxygen and saturation by O2, solid residue, residue after ignition), trophy (concentrations of NO3–,NO2–, NH4+, PO43– dissolved., Ptot.), and mineralization (specyfic electrolytic conductivity, total hardness and separately concentrations of Ca2+, Mg2+ and Cl–, SO42–, total concentrations of Fe and Mn).
Determination of Kinetic Parameters of Decomposition of Tetrahydropyrimidine Derivatives
Authors: Bhesaniya Kapil , Patel Ashish , Baluja Shipra
Published: December 2022

Some new tetrahydropyrimidine derivatives have been synthesized and their structural determination was done by IR, NMR and mass spectral data. Thermal analysis of these synthesized dihydropyrimidinthiones has been carried out by TGA and DSC techniques. From the thermograms, various kinetic parameters such as order of degradation (n), energy of activation (E), frequency factor (A) and entropy change (ΔS) have been evaluated. Further, thermal stability of tetrahydropyrimidine have been determined which is found to depend on the type of substituent present in the compounds.
Growth Responses of Okra (Albemoschus esculentus) and Jute Mallow (Corchorus oitorius) to Water Stress and Non-Water Stress Conditions
Authors: Ewetola Esther Abosede , Fasanmi Temitayo Funmi
Published: December 2022

Water stress is one of the abiotic stress factors that affect establishment, growth and yield of crop. Therefore, a screen house study was carried out to determine the effect of water stress on growth and yield of Okra and Jute mallow. 7 litre capacity each bucket was filled with 10 kg of soil and arranged in a completely randomized design with three replicates. There were four irrigation regimes based on field capacity; 100% FC (control), 75% FC, 50% FC, and 25% FC Seeds from local source were sown at the rate of three seeds per pot and later thinned to two seedlings per pot two weeks after sowing (WAS). Data on growth parameters; plant height, stem girth and number of leaves were collected at two week interval up to 10 WAS while total fruit yield and biomass yield, for okra and jute mallow respectively, were determined at harvest . Data collected were subjected to analysis of variance (ANOVA) and the means were separated using least significant difference at p<0.05. Okra growth and fruit yield were significantly (p<0.05) affected by field capacities; 75% FC produced significantly (p<0.05) tallest plant at 10 WAS (25.3 cm) while 25% FC gave shortest plant height (13.9 cm). Number of leaves at 10 WAS followed similar trend as plant height. Irrigation regimes did not significantly (p<0.05) affect fruit yield however, 75% FC recorded highest fruit yield than other field capacities. At 10 WAS, jute mallow plant height under 100, 75 and 50% FC were significantly (p<0.05) tallest height than at 25% FC. Stem girth followed the same trend as plant height. However, at 10 WAS, 75% FC produced significantly (p<0.05) higher number of leaves and biomass yield than other treatments. It could be concluded from the study that 75 % FC was best for growth, fruit yield and biomass yield of okra and jute mallow production.
Performance Analysis of a Mini-Thermoelectric Engine for the Generation of Electricity
Authors: Qadr Nazdar A. , Muhammad Saadia W. , Muhammad Fahmi Fariq
Published: December 2022

In this research work a small thermal engine was utilized for generation of electrical energy and its operation was analyzed in terms of the output performance with various external load resistances and different flywheel rotations. It was seen from the results that with increase of the external load there is a less considerable increase in voltage. It has been observed that by an increasing the external load from 100 Ω to about 2000 Ω, a rapid decrease in the output power is occurred. However, beyond a specific value of about 2000 Ω the decrease in the electrical power is relatively small. It was obvious from the results of output voltage, current and power with respect to the increase in hot air temperature (T1) that these physical quantities are increased at a constant rate for specific range of temperatures, from 185 °C to about 240 °C. It was worth mentioning that at higher temperatures the rate of increase in output voltage was reduced, implying that the expansion rate of hot air is getting saturated and the rotating speed of the flywheel reached its maximum capability to generate electricity.
Annealing Effects on the Some Optical Properties of Fe2O3 Thin Films Doped by NiO
Authors: Habubi Nadir Fadhil , Chiad Sami Salman , Abass Khalid Haneen , Abood Mahmood Muwafaq
Published: December 2022

Nickel oxide doped Fe2O3thin films have been prepared by spray pyrolysis technique on glass substrate. The initial solution was including a 0.1 M/L for both NiCl2and FeCl3diluted with redistilled water and a few drops of HCl. The effect of annealing temperature on optical properties was studied, using UV-Visible spectrophotometer to determine absorption spectra at a thickness of 400 nm. The reflectance increased with increasing annealing temperature, such as α, k, and n.While the transmittance decreases with increasing annealing temperature and the energy gap decreased from 2.68 eV before annealing to 2.70 eV after 500°C annealing temperature.
mechanisms of identifying the Bronze Age communities of the Homeric era
Authors: Kaljanac Adnan
Published: December 2022

The main goal of this article is to define fundamental mechanisms of identification and functioning of identity within prehistoric communities. In that sense the primary focus of the article is aimed on the identification mechanisms in Homer’s Illiad, and on defining the continuity or discontinuity of use of these mechanisms in works of later authors. By defining the functioning of the identification mechanisms, as well as its structure, observation of the relationship between identity and identity fluctuation within Homeric Greece communities becomes feasible. Additionally, it is possible to use these mechanisms to compare mentioned identities with known data relating the communities of the western Balkan region from the same chronological period. Based on the results of these comparations, there is an opportunity to observe and define/redefine more precisely term of archaeological culture itself, as well as previously defined Bronze and Iron Age cultures.
Ornaments of tombestones from Hreša
Authors: Halilović Zijad
Published: December 2022

In the early Middle Ages Hreša was part of the parish of Vrhbosna, which was in the 14 i 15 century a part of the land Pavlovic. With the first arrival of the Ottoman army, the area of the parish Vrhbosna turned into Bosnian place, later named after the main fortress Vilajet Hodidjed, and then afer a market place Vilajet Saray-ovasi. In 1455 the village Hreša (Hriša) was represented by a timar Isa Bey hizmećara Sufi Jahšija. Already in 1485 he has been separated from timars crew Hodidjed and added to sandžakbegov has.In the central part of Hreša, on the site of Han, stands a medieval necropolis with 22 tombstones, which has already been paid to attention in the literature. This paper emphasis is placed on the decorations represented on the tombstones.
Survey of the medieval cemetery at Mašeta in Fazlići, Travnik
Authors: Fekeža Martinović Lidija
Published: December 2022

Fazlići village is placed in the narrow area which was very populated in the Middle Ages. That is proved by many medieval cemeteries. However we don’t find this settlement in late medieval or in the early Ottoman historical sources. In southeastern part of the village at one of the hills in the site of Mašeta there is a cemetery with stećci about 140 meters long and 20 meters wide. About this cemetery scientific literature brought different information regarding their destruction and abandonment. There are 23 stećci on this site today. It can be presumed that even more tombstones were here considering its size. Remained monuments at the cemetery are partly destroyed, but the number of 14 big ridge tombstones shows that population of this area was capable to erect these monuments. By the documenting of stećci 7 graves and three burials in the stone coffins were revealed in the wide area between stećci. Their placement and burial rite are typical for late medieval cemeteries.
Results of the first archaeological Researches on the antique Fortification in Makljenovac near Doboj in 1959 and 1960
Authors: Žigić Vanja
Published: December 2022

Present knowledge of Roman castrum in Makljenovac near Doboj is based primarily on results of archaeological excavation conducted by Irma Čremošnik in the period between 1965 and 1967. Since it had never been published, results of an earlier dig conducted by Branko Belić in 1959 and 1960, have not been taken into account. Small finds that consist of military equipment, objects for everyday use, parts of furniture, glass, pottery and coins, are now being kept at Regional Museum in Doboj. An attempt has been made to present and analyze them in this paper, in order to supplement existing facts, as well as reach new conclusions about the life of the fort and presence of Roman army in this area. Based on this new information, combined with the facts published earlier, two distinct phases in the life of the castrum have been observed, divided by a half a century long period when it was either abandoned or scarcely used.
Recently discovered Basilica from Late Antiquity and a Tombstone Stela from Mramorak near Osmaci
Authors: Popović Goran , Šačić Beća Amra , Veletovac Edin
Published: December 2022

The territory of north-eastern Bosnia is one of the least explored parts of the Western Balkans in archaeology. In 2015, the remains of a double-naved basilica from Late Antiquity were discovered in the village of Mramorak, at the archeological site of Crkvina, in the municipality of Osmaci. A comparative overview of similar findings from north-eastern Bosnia is given in the introductory part of this paper in order to comprehend the importance of this finding as much as possible. This is followed by specific research results of the basilica from Late Antiquity from Mramorak. It is important to note that one tombstone stela from the period of the Principate has been discovered at this site. This is a high-quality monument as seen by the portraits of the decedents and their successors. It is a beautiful example of Roman stelas that has been discovered in the territory of present-day Bosnia and Herzegovina. Although the inscription field is physically damaged, the majority of the text can be reconstructed. This recently discovered basilica from Mramorak can be dated to the period from the 4th to 6th century, whereas the stela was probably produced in the 2nd century.
Ecclesiam de Glasinac – archaeological Excavations on the Crkvina in Bjelosavljevići
Authors: Jašarević Aleksandar , Antić Snježana
Published: December 2022

More than one century after the initially discovery, Glasinac is still one of the most important archaeological areas in the Balkans. In the last few decades the main focus was on the interpretation of already existing numerous materials from more than thousand prehistoric tumulus. In addition to this, very small quantity of archaeological materials from historical periods have been published. This paper presents results from rescue archaeological excavation from site Crkvine in Bjelosavljevići on Glasinac. Three-year archaeological excavations discovered the remains of medieval church decorated with frescoes, and 48 graves from the necropolis, all dated to the 14–15th century. Some of the graves contained luxurious material that indicate to the high status of the deceased.
Critics and Reviews
Authors: Silajdžić Tarik , Soldo Maja , Dedić Enes
Published: December 2022

Adnan Busuladžić, Antički željezni alat i oprema sa prostora Bosne i Hercegovine – Iron tools and implements of the roman period in Bosnia and Herzegovina, Univerzitet u Sarajevu – Zemaljski muzej, Sarajevo 2014, 400 str. (Tarik Silajdžić)

 

Adnan Busuladžić, Rimske vile u Bosni i Hercegovini, Zemaljski muzej Bosne i Hercegovine, Sarajevo 2011, 293 str. (Maja Soldo)

 

Adis Zilić, Stećci Podveležja – The Medieval Tombstones of Podveležje, Izdanja Federalnog ministarstva obrazovanja i nauke, Knjiga 8, Mostar 2016, 211 str. (Enes Dedić)
Newspaper Obituaries and Transnational Practice in Bosnia and Herzegovina
Authors: Softić Aiša
Published: December 2022

The recent war in Bosnia and Herzegovina has caused probably the greatest wave of migration of the Bosnian population into other countries, which also influenced traditional customs, including those relating to death rituals. When it comes to death, migration into other countries opens many questions, including those related to the decisions about the place of burial. Thus, for example, migrants chose to be buried either in their home or adopted countries. Also, there is a question related to the decisions about death announcements. In adopted countries, death is often announced through the existing webs of communication inside migrant communities, while in home countries death is announced through the media, especially through newspaper obituaries, which is specific to larger urban areas. This paper addresses the phenomenon of newspaper obituaries as a possible window into the way that Bosnian migrants elsewhere deal with the question of burial and death rituals. In addition to newspaper obituaries, this paper relies on ethnographic material that includes a number of informant interviews. The analysis demonstrated that such death obituaries could be observed as a form of transnational practice that includes the maintenance of relationships and communication of Bosnian immigrants with their home country.
Učenje da se vidi glasinački ćilibar
Authors: Kapuran Aleksandar
Published: December 2022

The paper addresses previous research into the amber finds from Glasinac, reaching back to the end of the 19th century, as well as some of the author’s own extensive study of this material conducted in 1980s. The method of auto-reflexivity as an epistemological tool is applied, enabling the monitoring of the process of acquisition and validity of archaeological knowledge. At the same time, the author applies re-evaluation of old evidence, whose many layers may also contribute to the new insights into the archaeological practice and data. Starting from the old evidence on amber in the Landesmuseum in Sarajevo, over the statistical survey of the complete set of amber retrieved from Glasinac, and the work on the amber finds in the National Museum in Belgrade, the author suggests – as a methodological example – the re-evaluation of some amber beads from the mounds at Osovo and Sjeversko.
beginning of Pharos – the present archaeological evidence
Authors: Kirigin Branko , Barbarić Vedran
Published: December 2022

The site of the Greek town of Pharos, today Stari Grad on the Island of Hvar in Croatia, during the last three decades has been a point of increased archaeological interest. Small excavation was undertaken by the team of the Adriatic Islands Project during 1990’s. The most intensive excavation so far was carried out by the Conservational Department in Split and, during the recent decade, these were followed by the rescue excavations in the same area by the Museum of Stari Grad. The publication of results by the three mentioned teams has created much vagueness, especially regarding the interpretation of the early phases of life on the site that pre-date the solid block built rampart. The interpretation presented by Jeličić Radonić and Katić (2015) was, recently, profoundly challenged by Popović and Devlahović (2018). Following this, our paper aims at clearing out some of the existing doubts on the early stages of the site occupation by presenting the interpretation of depositional processes based on the available archaeological evidence.
“Macedonian Amphoras” at Kale, Krševica Site – Another Evidence about Chronology of the Iron Age Settlement and Connections with the Hellenistic World
Authors: Popović Petar , Đorđević Aca
Published: December 2022

Archaeological finds discovered in the course of the investigations at the site Kale near Krševica village confirmed the exceptional importance of that site. Large scale excavations conducted at the site from 2001 to 2018 revealed the remains of the settlement dating from the 4th – 3rd centuries BC. Settlement with the acropolis was at the dominant position in the vicinity of Južna Morava. From there it was easy to reach Macedonia and the Aegean via the passages along the Vardar river valley. Many discovered artifacts including metal objects, fragments of Greek painted pottery, large quantity of amphoras, which mainly originate from the vineyard regions around the towns of Thasos and Mende confirm the intensive relations between Krševica and the southeast Europe. For this occasion we selected from the various amphora types only few specimens, which differ from the older ones and are characterized by disk foot, ovoid or baggy body with rounded or angular shoulder, long, thin neck, flaring or projecting rim with sharp ridge well below, strap handles from shoulder to ridge. They are also known as “Macedonian amphora” type and they are related to the Hellenistic period. From the same period dates the remains of the large vaulted structure below the acropolis. Settlement at Krševica had been also known to the Celts. Many pits with large quantity of the Celtic finds were found at the acropolis. The material dates from the 2nd–1st centuries BC, from the time of clashes between the Celts and the Romans after the fall of Macedonia.
Gospel of the Belgrade Library No. 54
Authors: Nakaš Lejla
Published: December 2022

This essay brings together all the philological and codicological data on lost Gospel manuscript no. 54 from the Belgrade library. As a result, we can now more securely identify Bifolium from the Russian State Library no. 291 (Moscow) as part of the codex. The research for the essay was carried out as part of a project by the Academy of Arts and Sciences of Bosnia and Herzegovina (ANUBiH) to create a digital corpus of texts for a dictionary of Old Church Slavonic, which has been revived after a half-century at the instigation of Prof. Dževad Juzbašić, fellow of the academy, and Prof. Blagoje Govedarica, corresponding fellow.
ED-XRF analysis of silver and gold jewelry found in Medieval necropolis Crkvina, Donja Zgošća (Kakanj municipality), BiH
Authors: Olovčić Almir , Jotanović Aida , Kevilj-Olovčić Almira , Veispahić Amra
Published: December 2022

During archaeological campaigns in 2010, 2012 and 2015 at the Medieval necropolis Crkvina, in central Bosnia, beside skeletal remains, pieces of jewelry, ceramic, construction material, fabric and small artefacts from different periods were also found. The most important finding was a signet ring, with the lily motif, believing to belong to Bosnian king or some high class nobility from Medieval period. Beside the ring, other richly decorated silver and gold jewelry was also found. The goal of this study was, for the first time, to provide information about composition of the most interesting artefacts and also to enhance knowledge about Medieval jewelry industry in Bosnian Kingdom. Results showed that the majority of jewelry was made from silver, of highest quality, with gold being used for surface gilding. Higher than usual copper content in some of the rings (more than 3% in weight percentage) was possibly added intentionally, to enhance properties of the silver. One of the rings, without any decorations was proved to be brass made, with zinc content as high as almost 20%. Results of this study contribute to the better understanding of the otherwise previously scarce knowledge of jewelry tradition in Medieval Bosnian Kingdom.
THE OBJECTIVITY OF THE BUSINESS COMPETITION SUPERVISORY COMMISSION IN DECIDING BUSINESS COMPETITION CASES IN INDONESIA
Authors: Khairazi Rifqon
Published: December 2022

This study discusses the commission board's objectivity in a trial while deciding a business court case. This study aims to identify the commission board and investigators' authority in a courthouse, and the fact that they are in the same institution as well as the concern. This study uses a type of normative research through a statutory approach and a conceptual approach. This research's data source is obtained by tracing statutory regulations, especially those related to business competition. The research shows a relationship that can affect The Indonesian Competition Commission (ICC) decision regarding the extent of authority that ICC has, as contained in the provisions of Article 36 of Law No. 5/1999. This obscurity can provide legal loopholes that have potentially offer a wide range of unlawful authority for ICC. Therefore, the Government has to amend the current regulation
THE VALIDITY OF BAWASLU'S LEGAL DECISIONS HANDLING ELECTION VIOLATIONS
Authors: Mushafi Mushafi
Published: December 2022

This study will discuss the validity of the Bawaslu's decision on election violations. Because, according to preliminary findings, with the issuance of Law No. 7 of 2017 the position of Bawaslu is stronger. In this Law, Bawaslu in handling election disputes can not only provide recommendations to the KPU but also provide or make decisions that must be implemented by the parties. This means that Bawaslu currently has broader authority in handling election cases such as administrative violations and other violations. Then how is the validity of the legal decision from the Bawaslu? The method used in this research is in the category of normative legal research with a statute approach and a conceptual approach.