The aim of this in vitro study was to evaluate by scanning electron microscopy the morphological aspects of the enamel of primary teeth after etching with 36% phosphoric acid or a non-rinse conditioner. Ten naturally exfoliated anterior primary teeth were selected. The samples were subjected to prophylaxis with pumice paste and water using a low-speed hand piece. Etching was done on the buccal ...

Here we develop a general purpose pre/post conditioner T, to solve an ill-posed system of linear equations, Ax = b. The conditioner T is obtained in the course of the solution of the Laplace equation, through a boundary-collocation Trefftz method, leading to: Ty = x, where y is the vector of coefficients in the Trefftz expansion, and x is the boundary data at the discrete points on a unit circl...

Aim: The aim of the study was to evaluate the surface conditioned dentin and its effect on microleakage of metal copings luted with glass-ionomer cement. Objectives: (1) To evaluate the morphology of unconditioned and conditioned dentin, (2) to evaluate the elemental composition of unconditioned and conditioned dentin, (3) to evaluate and compare the microleakage of metal copings luted with gla...

Background: A neem-based conditioner lotion (ONC) used against head lice was previously tested clinically and shown to be relatively ineffective. To improve the activity against lice and their eggs, it was reformulated into a silicone vehicle (NNC) as part of a project to improve pediculicidal medical devices. An ultrasound nit comb was also developed to be used in conjunction with the neem lot...

Abstract: In recent years, as part of the remarkable development of electronic techniques, electronic control has been applied to various systems. Many sensors and actuators have been implemented into those systems, and energy efficiency and performance have been greatly improved. However, these systems have been complicated, and much time has been required to develop system controllers. In thi...

The paper presents a comparative study of three topologies of recently developed voltage-fed z-source inverter (ZSI) such as simple ZSI, quasi-ZSI and trans-ZSI. Different control techniques, proposed earlier for simple ZSI such as simple boost control, maximum boost control and constant boost control, have been applied here for all type of ZSI topologies. The detailed comparative evaluation of...

This paper describes the efficiency improvement technology of the 3D scroll compressors and the development of 3D scroll compressor for commercial air-conditioner. 3D scroll, our newly developed profile, can compress refrigerant not only radially but also axially. Therefore, higher compression ratio, higher reliability and larger capacity are obtained by introducing 3D scroll. Since the 3D scro...

The interaction and the function of some amino acids in hair care applications are discussed. When amino acids are applied to hair in the form of simple aqueous solution, uptake of the amino acids is mainly controlled by ionic equilibrium. When amino acids were incorporated in a hair conditioner, the result was quite different, suggesting the importance of interaction between the amino acids an...

<p>Modern shampoos are much more than just cleansing agents. With rising demands for new milder and ‘greener’ products, the developments in field of shampoo conditioners moving at a faster pace ever before. Soaps were initially used to clean scalp but not recommended hair because they leave behind soap scum when mixed with hard water that is difficult rinse from scalp. There different typ...

Differentiated Services is the most advanced method for traffic management which provides QoS. QoS is essential for today’s internet. QoS represents set of techniques necessary to manage throughput, packet loss and delay. Traffic Conditioners or Policers are the most important components of differentiated services. In this research, different Traffic Conditioners or Policers are compared on the...