AIM The aim of this in vitro study was to evaluate the surface roughness and hardness of both unbleached and bleached (opalescence; 10% carbamide peroxide) human enamel brushed with water (without dentifrice), fluoride abrasive dentifrice (Colgate Total) and whitening dentifrice (Natural White). MATERIALS AND METHODS Human enamel samples were obtained from third molars and randomly divided in...

Rivers are the source of freshwater for any urban community and hence, monitoring river water is an obligatory yet challenging task. This study was conducted in a subtropical India with view developing quantitative approach to assess its quality (WQ) status. For purposes this study, samples were collected from five locations across Mahananda River main streams encompassing both urbanised non-ur...

Sand Intermittent Filtration (SIF) is an established technology of wastewater treatment and in recent years it gains renewed interest due to its simplicity less energy requirement. The aim the present study was evaluate modified filter-bed Reactor using Sand-intermittent-filtration for removal physicochemical parameters viz dissolved oxygen (DO), biochemical demand (BOD), chemical (COD), total ...

Groundwater quality and quantity both are important for the survival of human beings on this planet. In present study an attempt has been made to assess groundwater at mass using points. To fulfil objectives study, four sites (Sahibabad, Ghaziabad, Muradnagar, Modinagar) were selected along metro line construction from Delhi Meerut. At all these sites, workers projects living working drinking p...

Penerapan Total Quality Management(TQM) merupakan salah satu cara terbaik untuk menjaga kondisi perusahaan tetap sehat saat sedang berkembang karena TQM dapat memberikan keuntungan bagi dalam persaingan dunia bisnis. Akibatnya, yang adalah dengan menerapkan TQM. Tujuan dari penelitian ini mengetahui bagaimana penerapan di PT. Ukhuwah Industri Universitas Muslim Indonesia. Penelitian berusaha pe...

The present investigation deals with limnobiotic status of the Almatti reservoir from February, 2003 to January, 2005. The study revealed that there exists a fluctuations of the physical factors viz., rainfall, humidity, air and water temperature, pH and electrical conductivity (EC), and chemical factors viz., dissolved oxygen (DO), free carbon dioxide, total alkalinity, total hardness, calcium...

the $k$-th semi total point graph $r^k(g)$ of a graph $g$, is a graph obtained from $g$ by adding $k$ vertices corresponding to each edge and connecting them to endpoint of edge considered. in this paper, we obtain formulae for the resistance distance and kirchhoff index of $r^k(g)$.

Two surveys of consumer satisfaction with drinking water conducted by Taiwan Water Supply Corp. are presented in this study. The study results show that although a lot of money was invested to modify traditional treatment processes, over 60% of local residents still avoided drinking tap water. Over half of the respondents felt that sample TT (from the traditional treatment process) was not a go...