This paper reports on the assessment of the quality and quantity of castor oil from castor seeds collected from different regions in Tanzania. The castor seeds from Arusha, Dar es Salaam, Dodoma, Iringa, Kagera and Morogoro regions in Tanzania were extracted by Soxhlet method using n-hexane and the oil yields were determined. The yields were 52.78%, 49.95%, 47.89%, 44.23%, 43.71% and 43.69% for...

Two simple, rapid, accurate and economical 'UV Spectrophotometry' and 'First Order Derivative' methods have been developed for determination of levofloxacin hemihydrate in bulk and tablets. In (10% v/v) acetonitrile, the lambdamax of the drug was found to be 288 nm. The same spectrum was derivatised into first order derivative, using UV probe software of instrument (Shimadzu-2450), at Deltalamb...

Drinking water quality with respect to fluoride, iron, and nitrate content has been carried out in Kamrup district of Assam, India. Forty six different sampling stations were selected for the study. Iron was analyzed by using an atomic absorption spectrometer, Perkin Elmer AA 200, while fluoride was measured by the SPADNS method at 570nm and Nitrate content was measured by the phenol-disulphoni...

A simple and sensitive reverse phase high performance liquid chromatographic method for the determination of Pioglitazone (PIO) and Glimepiride (GLM) was developed on a Shimadzu Class vp series HPLC system with a phenomenex C18 column (150x4.6mm, 5μ) using a mobile phase mixture containing methanol and ammonium acetate buffer (pH-3.5) in the ratio of 55: 45. The flow rate was 0.5ml/min and effl...

The objective of the present study is to determine the bioaccumulation of heavy metals in various organs of the fresh water fish exposed to heavy metal contaminated water system. The experimental fish was exposed to Cr, Ni, Cd and Pb at sublethal concentrations for periods of 32 days. The elements Cd, Pb, Ni and Cr were assayed using Shimadzu AA 6200 atomic absorption spectrophotometry and the ...

Experimental section General All chemicals and solvents for peptide synthesis were of reagent or HPLC grade and were used without further purification. TARON resin was purchased from Clontech. Dihydrofolate (DHP), nicotinamide adenine dinucleotide phosphate (NADPH) and methotrexate (MTX) were purchased from Wako Pure Chemical Industries. Biotin-AC5-OSu and 2-morpholinoethanesulfonic acid monohy...

Using a shock tube to generate shock waves, the wave patterns through several bifurcated junctions were studied. The effect of roughness was simulated by introducing grooves on the lower wall of the junctions, while the upper wall had a smooth surface. Five different bifurcation angles were used in the present study: 0, 30, 45, 60, and 90 degrees. The shock tube driver pressure was P4 = 12 bar,...

This project studies the synthesis process of 2-D nanostructure of inorganic materials. This project studies the ZnO thin layer deposition on a commercial grade paper using Atomic Layer Deposition (ALD) technique and its effectiveness of reducing water permeability. The experiment utilizes a commercial grade blue ink for the testing of the permeability. The purpose of the experiment is to succe...

In this paper, we present the results of experimental investigation spectral dependence aluminum mirror reflection coefficient in operating range 185…900 nm. The is a part Specular Reflectance Measurement Attachment to Shimadzu UV-2700 spectrophotometer. We used data obtained on same spectro-photometer for standard incidence angle 5° fused silicon dioxide plate as reference sample. This because...

The study of the pigment apparatus (chlorophylls, carotenoids) and flavonoids will allow to reveal plants adaptation mechanisms, which subsequently can be used in ecological biochemical studies. purpose is determine content photosynthesis pigments phytomass hydroponically grown garden sage (Salvia officinalis L.) compared with open soil. Two varieties were studied: ‘Dobrinya’ ‘Kubanets’ from tw...