The skin is susceptible to different injuries and diseases. One major obstacle in skin tissue engineering is how to develop functional three-dimensional (3D) substitute for damaged skin. Previous studies have proved a 3D dynamic simulated microgravity (SMG) culture system as a "stimulatory" environment for the proliferation and differentiation of stem cells. Here, we employed the NASA-approved ...

<div class="section abstract"><div class="htmlview paragraph">In a previous study it was shown that production vehicle employing Wankel rotary engine, the Mazda RX-8, easily capable of meeting much more modern hydrocarbon emissions than had been certified for. It contended this mainly due to its provision zero port overlap through adoption side intake and exhaust ports. In earlier w...

INTRODUCTION The aim of this study was to assess the extent of adoption, application and the associated issues with the nickel-titanium (NiTi) rotary instruments and techniques amongst endodontists and general dentists in Tehran. MATERIALS AND METHODS A total of 33 questions classified in six categories of demographics, frequency rate of NiTi rotary instrumentation and information. The sample...

Watches bene�t from a long design history. Designers and engineers have successfully built devices using rotary physical inputs such as crowns, bezels, and wheels, separately or combined. Smart watch designers have explored the use of some of these inputs for interactions. However, a systematic exploration of their combinations has yet to be done. We investigate the design space of interactions...

The use of an ultrasonic apical preparation technique has been advocated recently. Root-end preparations in 30 extracted single-canaled human teeth were evaluated, comparing those prepared with ultrasonic instrumentation alone, or in combination with rotary bur preparation, to those prepared with rotary instrumentation alone. Specimens were evaluated for the presence of debris, smear layer, and...

Under the stress of environmental pollutions and fossil fuel consumption caused by on-road transport, hybrid vehicles are attracting much attention. Opposed rotary piston (ORP) engines a promising power source for vehicles, due to their compact designs high density. In this paper, combustion emission characteristics turbocharged ORP engine fuelled with hydrogen were investigated evaluate overal...

The objective of this study was to estimate power delivery efficiency and fuel consumption based on engine modes. In study, a 95 kW power-shift tractor used analyze during rotary tillage. Rotary tillage conducted in field experiment with the conventional, APS (auto shift) power, ECO To conditions, soil hardness water content were measured, samples collected from experimental site texture by usi...

In this study, a fully integrated and portable Rotary Genetic Analyzer has been developed to analyze the gene expression of influenza A v irus . The Rotary Genetic Analyzer is made up of four parts : a disposable microchip, three thermal blocks for temperature control, a servo-motor for precise and high-rate spinning of the chip, and a miniaturized optical fluorescence detector. The microdevice...

AIM To evaluate the efficacy of 0.5%, 2.5% and 5.25% sodium hypochlorite (NaOCl) as intracanal irrigants associated with hand and rotary instrumentation techniques against Enterococcus faecalis within root canals and dentinal tubules. METHODOLOGY A total of 180 extracted human premolar teeth were infected for 21 days with E. faecalis. The specimens were divided into 12 groups, as follows: gro...

INTRODUCTION High-accuracy rotary encoders are required for rotational axis position measurement in ultraprecision manufacturing and measurement equipments. A typical rotary encoder is made of a glass disk with a fine grating pattern and a scanning read head unit. Digital pulse trains are output from the read head to represent the disk rotary position. The angular measurement accuracy of such a...