Kirjojen hintavertailu. Mukana 11 244 527 kirjaa ja 12 kauppaa.
Kirja.info

Kirjahaku

Etsi kirjoja tekijän nimen, kirjan nimen tai ISBN:n perusteella.

340 tulosta hakusanalla Sriyam

Performance Improvement of Bio-diesel Engine

Performance Improvement of Bio-diesel Engine

Sriramulu Jaichandar

LAP Lambert Academic Publishing
2019
pokkari
The rapid depletion of fossil fuel with increased environmental concern has increased efforts to produce an alternative to diesel. The twin problems of fuel crises and environmental pollution by the usage of fossil fuels can be resolved significantly by the usage of biodiesel. Extensive research has shown that biodiesel can be used in unmodified diesel engines. However, most of the published reports show that the use of biodiesel in diesel engine decreases in performance parameters such as brake thermal efficiency, brake power and increases in specific fuel consumption compared to diesel. The main reasons for this are due to higher viscosity and the lower volatility of biodiesel. In order to prepare a uniform biodiesel-air mixture to achieve higher combustion efficiency factors like injection timing, injection pressure, engine design such as the shape of the combustion chamber and number and size of injection nozzle hole, fuel spray pattern are important. This book explains the experimental approaches that have been adopted such as the optimization of the combustion chamber and injection parameters to achieve the full potential of biodiesel in the diesel engine.
Vertaile hintoja
Use Of Mineral Trioxide Aggregate In Pediatric Dentistry

Use Of Mineral Trioxide Aggregate In Pediatric Dentistry

Shriyam Sharan; Supreeya Patel; Gautam Kumar

LAP Lambert Academic Publishing
2020
pokkari
MTA materials have an excellent potential for endodontic use. Their good radioopacity keeps the mindispensable for certain clinical applications. PCs seem to have a biocompatible nature and similar technical characteristics like commercial MTA materials. A disadvantage of Portland cement is that it has lower radioopacity and its main advantage is its very low cost. The use of expensive commercial dental MTA materials for primary teeth endodontics in an attempt to substitute less efficient or toxic materials. It is interesting that no information has been published regarding details that led to the precise delineation of the present MTA materials.Changing usage from grey to white MTA was simply changing from grey to white Portland cement as base material to mix with bismuth oxide. The short coming of MTA is its longer setting time and its cost, which needs to be considered . As yet unsolved is the occurrence of clinical discoloration after the use of MTA materials.
Vertaile hintoja
1...34567...17