University of Peradeniya

About: University of Peradeniya is a education organization based out in Kandy, Sri Lanka. It is known for research contribution in the topics: Population & Poison control. The organization has 5970 authors who have published 7388 publications receiving 197002 citations.

A study of condylar fractures in Sri Lankan patients with special reference to the recent views on treatment, healing and sequelae

Abstract: New opinions have emerged from recent investigations into condylar fractures. With these in mind, 219 patients were investigated with regard to clinical and treatment aspects, healing and complications. These injuries comprised 40.2% of the total number of mandibular fractures. The male:female ratio was 3:1. Single fractures of the condyle occurred in 71.7% while the rest were either bilateral or combined with other mandibular fractures. Treatment was largely conservative, early movement being employed in 68.5%. Open reduction was totally avoided. Restitutional healing of the fractured condyle was observed in children but seldom in adults. Complications were found to be minimal. Ankylosis occurred in 1.4% and growth was deficient in two patients. These findings appear to strengthen the older concepts on treatment although the views on healing of condylar fractures, and mandibular growth may have changed in the last decade.

Adsorption Behavior of Methyl Violet 2B Using Duckweed: Equilibrium and Kinetics Studies

Abstract: This study focuses on the adsorption behavior of using Lemna minor (Duckweed) as a potential low-cost biosorbent for the removal of methyl violet 2B (MV). The effects of parameters such as contact time (30–240 min), settling time (30–240 min), pH of dye solution from pH 2 to 12 were studied. Optimum contact time and settling time for the maximum removal of MV were 2 and 1 h, respectively. Maximum MV removal was observed at its ambient pH. Elemental analysis and functional group characterization of the biosorbent were carried out using X-ray fluorescence and Fourier-transformed infrared spectroscopy, respectively. Surface morphology of Duckweed, before and after adsorption of MV, was characterized using scanning electron microscope, and ionic strengths and pre-treatment of biosorbent were also investigated. Six different isotherm models, namely Langmuir, Freundlich, Temkin, Dubinin–Radushkevich, Redlich–Peterson and Sips isotherms, were performed on the equilibrium adsorption isotherm of MV. Experimental data for adsorption of MV correlate well with both the Langmuir and Sips isotherm models. The maximum biosorption capacity (q max) at 298 K was 332.5 mg g−1 (Langmuir) and 307.3 mg g−1 (Sips) for MV, which is far superior to most biosorbents reported. Kinetics study followed the pseudo-second order.

Sustainability of rice production: a Malaysian perspective

Abstract: As Asian rice demand is projected to increase by 30% in 2010, a sustainable approach of rice production has become important. In order to fulfill the rice demand for the growing population and with the target rice self-sufficiency of 65%, Malaysia has to increase its rice productivity. As the attainment of sustainability in rice farming is country and area specific, Malaysia has devised its own ways to achieve this goal within a prescribed time frame. The major problems faced by the rice sector have been identified and step-by-step solutions are sought through policy changes. Rice estates in Malaysia have already proven that commercial rice production is viable, economical and sustainable. FELCRA Seberang Perak, the first and largest rice estate in Malaysia, has proven the sustainability and viability of commercial rice farming by achieving a continuous cropping intensity of 200%. The keywords to sustainable rice production are doubling yields, estatization and private corporate sector investments. The strategies to be devised must include getting investments to make the present non-lucrative business a profitable venture, whilst balancing the country’s social obligation.