Silk fibroin films are a bio-active interface for neuroregenerative medicine
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Research Inequality in Nanomedicine
The 10-90 gap is an idea in the healthcare literature that less than 10% of all research funding goes to solving health problems that are 90% of the global disease burden. This paper examines whether there is inequality in nanotechnology healthcare research (nanomedicine). To understand the inequality in nanomedicine,…
Investigation on titania synthesis for photocatalytic NOx abatement
Various TiO2 have been synthesized by hydrolysis of a TiOSO 4 precursor changing the precipitation agent (NaOH and NH 4OH), the pH of aging (acid, neutral or basic) and the temperature of calcination. Characterization by X-ray diffraction, N2 physisorption, ionic chromatography and high-resolution transmission electro…
UV-spectrocopy and band structure of Ti:AI2O3
BACKGROUND AND AIMS: Association of electronic cigarette use and subsequent smoking has received considerable attention, although age of first use has not. This study tested differences in regular (e-cigarettes, cigarettes) and ever (cigarettes) use between e-cigarette user groups: early versus never users, late versu…
A mircostrip antenna with single square ring structured left-handed metamaterial
A simple structured left-handed metamaterials composed of single square ring cell is fabricated. Its permittivity and permeability are simultaneously negative in 4.8-5.25 GHz. A 5.0 GHz microstrip antenna is proposed, and we use this single square ring structured left-handed metamaterials (SSR-LHMs) as covering layer.…
Investigation on the Corrosion Performance of Nickel Electrodeposited Tempered Steel Substrate
The investigation into the corrosion performance of nickel electroplating of low carbon steel substrate in Na2CO3 environment was studied. The substrate was heat treated at various tempering temperatures, plated with nickel for 30 minutes and subjected to corrosion in Na2CO3 solution. The microstructure and weight los…
MULTIVARIATE STATISTICAL EVALUATION OF PHYSICAL PROPERTIES OF PULPS REFINED IN A PFI MILL
Aim of the present work is to evaluate the physical properties of cellulosic pulps refined in a PFI mill through analysis of interlaboratorial data. These data were collected from physical tests on laboratory handsheets prepared with refined pulps supplied by 10 different laboratories. Although a high dispersion in th…
Fuel Pebble Design Studies of a High Temperature Reactor using Thorium
In this paper the optimal design, in terms of thorium to U-233 conversion, of a fuel pebble in a pebble bed High Temperature Reactor (HTR) using thorium is investigated. Using SCALE6 the infinite multiplication factor and nuclide concentrations are calculated during depletion. Pebbles with thorium and different initia…
Quality control analysis of imported fertilizers used in Ghana: the macronutrients perspective
The main objective of this environmental research was to validate specifications indicated by manufacturers on their fertilizer products. Selected fertilizers types were sampled from five major fertilizer importing companies in Ghana for macronutrient analysis to determine the fertilizer quality. Five analytical techn…
STUDY OF FIRST SHARP DIFFRACTION PEAK IN As2S3 GLASSES BY X-RAY POWDER DIFFRACTION METHOD
Two As2S3 glasses denoted glass I and glass II obtained respectively by slow and rapid quenching methods have been studied by means of X-ray powder diffraction method. The X-ray diffraction (XRD) patterns of these glasses indicate three broad diffraction peaks located at different diffraction angles 2θ between 15°-22°…
Adsorption of Cd(II) ions by synthesize chitosan from fish shells
One of the major applications of chitosan and its many derivatives is based on its ability to bind strongly heavy and toxic metal ions. Chitosan is made from chitin by a chemical process involving demineralization(DM),deproteinization (DP), decolorization (DC), and deacetylation (DA). In this research natural bio poly…
ZnO thin films preparation on glass substrates by two different sol-gel methods
Here we present thin films of ZnO with photocatalytic application in purifying water from organic pollutants. The films were obtained from stable colloidal precursor sol, prepared by two sol-gel methods (A and B) using zinc acetate and varying the solvents. These sols are deposited on glass substrates via dip-coating…
Coordination compounds of n-phthaloylglycine and n-phthaloyltyrosine and their antimicrobial activities
A B ST R A C T Coordination compounds derived from N-phthaloylglycine and N-phthaloyltyrosine were synthesized. The ligands were formed by 1:2 molar condensation of phthalic anhydride with tyrosine and glycine respectively. The complexes were formulated as [Zn(PHG) 2 (H 2O) 2] (OAc) 2[1], [Ni(PHG) 2 (H 2O) 2] (OAc) 2…
STRENGTH OF CONCRETE CONTAINING DIFFERENT TYPES OF FINE AGGREGATE
Common river sand is expensive due to excessive cost of transportation from natural sources. Also large-scale depletion of these sources creates environmental problems. As environmental transportation and other constraints make the availability and use of river sand less attractive, a substitute or replacement product…
PLD DEPOSITED Al2O3 THIN FILMS FOR TRANSPARENT ELECTRONICS
Alumina (Al2O3) films of 800 nm thicknesses were obtained by pulsed laser deposition method. The chemical composition and the morphology of as grown films were investigated by Energy Dispersive X-ray spectroscopy (EDX), Scanning Electron Microscopy, Atomic Force Microscopy and optical transmittance spectroscopy (OTS)…
Synthesis and characterization of magnetic nano-sized Fe 3 O 4 and CoFe 2 O 4
The synthesis of Fe 3 O 4 and CoFe 2 O 4 nanomaterials was performed by co-precipitation of corresponding metal hydroxides and their further decomposition to oxides under ultrasonic irradiation. The particles were characterized by X-Ray diffraction (XRD), transmission electron microscopy (TEM) and vibrating sample mag…
Influence of the sodium dodecyl sulphate (SDS) concentration on the disperse and rheological characteristics of oil-in-water emulsions stabilized by octenyl succinic anhydride modified starch-SDS mixtures
Stability of oil-in-water emulsions can be achieved by chemically modified starch, such as octenyl succinic anhydride (OSA) starch, as an emul- sifier. In order to analyse the disperse and rheological characteristics of emul- sions containing two kinds of emulsifiers, part of the OSA starch can be sub- stituted with a…
The Kinetics of Calcination of High Calcium Limestone
The kinetics of calcination of a high calcium type of limestone was studied. Ukpilla limestone found in the central region of Nigeria was studied. The limestone composition shows that the limestone has 51.29% calcium oxide and 41.53% loss on ignition and magnesium oxide content of 2.23%. The following parameters were…
Thermoanalytical Study and Purity Determination of Azelastine Hydrochloride and Emedastine Difumarate
The thermal behavior of antihistaminic drugs, azelastine hydrochloride, and emedastine difumarate in their drug substances were investigated using different thermal techniques. The thermogravimetry was used to study the thermal degradation and kinetic parameters; activation energy (Ea), frequency factor (A), and react…
Al/PANI-MWNT/Au-Plastic Schottky Diode Solar Cells
Al/PANI-MWNT/Au-Plastic Schottky diode solar cells were fabricated by the electrochemical polymerization technique to make polyaniline films on the top of gold nanoparticles film. The aluminum contact was deposited by thermal evaporation. The electro-optical characteristics of these devices produced at the different p…