In order to clarify the theoretical basis of the variability in the measurement of tablet hardness by compression pressure, NIR spectroscopic methods were used to predict tablet hardness of the formulations. Tablets (200 mg, 8 mm in diameter) consisting of berberine chloride, lactose, and potato starch were formed at various compression pressures (59, 78, 98, 127, 195 MPa). The hardness and the...

In this study water quality was indicated in terms of Water Quality Index that determined through summarizing multiple parameters test results. This index offers a useful representation the overall for public or any intended use as well indicating pollution, management and decision making. The application Index(WQI) with sixteen physicochemical performed to evaluate Tigris River drinking usage....

This study was conducted in the city of El-Beida-Libya on different samples from 11 drinking water purification and treatment stations, compared with source (residential water) some most popular mineral Libyan local markets. During this work, a number chemical properties studied were examined, such as pH, Electric Conductivity (EC) (µS/cm),Total Dissolved Solids (TDS) (mg/l), Alkalinity (as HCO...

BACKGROUND Underground water is an important natural resource serving as a reliable source of drinking water for many people worldwide, especially in developing countries. Underground water quality needs to be given a primary research and quality control attention due to possible contamination. This study was therefore designed to determine the physico-chemical and bacteriological quality of bo...

Introduction Rivers are one of the most important water resources and it is very important to study their water quality. Therefore, in this study, sampling was done from 15 permanent waterway stations of Pirbadush and Gashun of Qolyan River in Lorestan province, which are located in the path of oil shales.   Materials and Methods  Hydro-geochemical parameters were calculated by analyzing t...

We consider labeled Traveling Salesman Problems, defined upon a complete graph of n vertices with colored edges. The objective is to find a tour of maximum (or minimum) number of colors. We derive results regarding hardness of approximation, and analyze approximation algorithms for both versions of the problem. For the maximization version we give a 1 2 -approximation algorithm and show that it...

the surface water chemistry of thiruvananthapuram museum lake was carried out in the period of february 2013 to january 2014. correlation study of the parameters and overall ccme wqi (canadian council of ministers of the environment water quality index) was also prepared in the study for the lake water. the parameters analysed are cations such as ca2+, na+, mg2+ and k+ and the anions like po4-,...

Purpose: To formulate matrix type sustained-release (SR) tablets of tizanidine hydrochloride (TH) for prolonged drug release and improvement in motor activity after spinal injuries. Methods: Matrix tablets were prepared by the wet granulation method using four polymers (hydroxyl propyl methyl cellulose [HPMC] K 100, ethyl cellulose [EC], guar gum, and polyvinylpyrrolidone (PVP K30) and characte...

This study aims to evaluate the hydrogeochemistry of aquifers in Fars province, Iran, from 2007 2017 and assess groundwater’s suitability for drinking agricultural uses. A total 35,000 samples were collected wells qanats across province. Piper, Gibbs, Durov diagrams used hydrochemical facies processes. Cross plots different ions investigated ion exchange determine effects anthropogenic activiti...

This study highlights the groundwater hydrogeochemical characteristics and processes (hydrochemistry characteristics, ion exchange, salinization) quality suitability assessment for irrigation purposes from five wells in Greenbelt area located northwestern Al-Najaf Governorate, Iraq. The of was assessed based on water index (IWQI) thirteen parameters indices such as total dissolved solids (TDS),...