CSEC Biology: Effect of Human activity on the Ecosystem, and How humans can reduce this negative effect.Full description
This study was undertaken to study the effects of cement dust in vegetation in Azadirachta indica and Mangifera indica . The different amounts of cement dust mixed with soil on the seed germination, plant growth, leaf area. The reason for this was th
project guideFull description
Globalization in Philippines
A look at the effect of altitude on relative humidity of atmosphere.
The present research, utilised only renewable oil samples to reduce atmospheric pollution and also to decrease our reliance on fossil oil products and provide a direction towards alternative fuel usage in diesel engines. On a 1 cylinder, naturally as
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Full description
In an emboldened move, government declared that the 500 and 1000 Rupee notes will no longer be legal tender from midnight, 8th November 2016. The RBI will issue new Rs. 500 and Rs. 2,000 notes which will be placed in circulation from 10th November 20
Mung Beans is a kind of crops that growth well in tropical regions which has a high light intensity. This research was aimed to know and compare the growth of Mung Beans (Vigna radiate L.) w…Full description
Mung Beans is a kind of crops that growth well in tropical regions which has a high light intensity. This research was aimed to know and compare the growth of Mung Beans (Vigna radiate L.) w…Deskripsi lengkap
Concrete is one of the most important materials in the construction world. In the present scenario, due to the various industrialization, especially in the urban areas, the demand of construction work increases progressively. Due to which there is ve
The impact of crude oil on the permeability of the soil in a non oil producing community in Enugu State was investigated using disturbed A 6 CL soil sample collected from Ibagwa Nike area of the state. The sample was divided into five 5 portions and
Concrete is one of the most important materials in the construction world. In the present scenario, due to the various industrialization, especially in the urban areas, the demand of construction work increases progressively. Due to which there is ve
Concrete is one of the most important materials in the construction world. In the present scenario, due to the various industrialization, especially in the urban areas, the demand of construction work increases progressively. Due to which there is ve
Plant Physiology
Studied various parameters that affect SI and CI engine performance. Factors- injection pressure, stroke to bore ratio, ignition timing, swirl ratio, valve timing etc.
how engine works
The effect of chronic exposure of Sodium Fluoride NaF , 5,20,50 mg kg b.w. for 60days , on reproductive tissue damage in young male albino rat was evaluated histopathologicaly alongwith certain genital tissue wet weight . Damaging effect on testicula
Artigo Cientifico
The emission from combustion of fuels of internal combustion engine have been major part of the air pollutant sources. Emission regulations in developed countries are becoming very strict and trade off strategies in order to reduce pollutants and it
Authors B T Fowler 1Research Associate (Project Leader), Esso Research Centre, Esso Petroleum Co. L td, Abingdon, Berks Abstract ExtractBe it bulk-oil temperature or the hot-spot temperature of a conventional circulatory oil system, the environmental temperature in which lubricated equipment is required to operate, or the local temperature produced at a metal s urface on failure of a lubricant film, temperature presents a serious challenge to equipment designers and lubricant technologists.In applications ra nging from equipment in lunar orbiters to metal forming, today's lubricants are required to prevent metal-to-metal contact between moving surfaces at temper atures as low as -150°F and higher than 1500°F. No one product can, of course, provide such versatility and it is necessary to select lubricants or lubricant s ystems for use over a somewhat narrower temperature band.At extremely high temperatures solid lubricants have firmly established their position. Magie 's review paper (1) Reffernces are given in Appendix 13.1 dwells on progress in the 1960s from graphite and molybdenum disulphide having stability a nd lubricity up to 650°F, to tungsten disulphide and tungsten diselenide offering performance up to 825°F, on to tantalum disulphide (1050°F) and heavy metal compounds offering promise of stability in the range 2000 4000°F.Whilst the inorganic solid lubricants have an extensive literature of their own, the me tal-free solid organic lubricants which are effective between 800 and 1300°F must not be ignored. Phthalocyanines (2) have demonstrated their ability to lub ricate rolling and sliding contact bearings under such rigorous temperature conditions.Table 13.1. caption: Comparison of mineral oil and ester propertiesTa ble 13.2. caption: Lubricant-system temperature for modern aircraftTable 13.3. caption: Type I and Type II ester lubricant propertiesTable 13.4. caption: Summ ary of 20 years of progress in the operating temperature régime of aviation-engine oilsFig. 13.1. caption: Structure of estersFig. 13.2. caption: Effect of viscos ity on the load-carrying capacity of mineral and synthetic lubricantsFig. 13.3. caption: Ester response to anti-oxidantsFig. 13.5. caption: Decomposition of hi ndered esterFig. 13.6. caption: Effect of sliding speed on load-carrying capacit y of oilFig. 13.7. caption: Effect of air as opposed to nitrogen blowing (250 cm3/ min) on increase of oil viscosity in a 192 h testFig. D1. caption: Curve relatin g wear ?V and time for stainless steel 316L in sodium at 600°CFig. D2. caption: Char ge machine as installed in Dragon reactor. Illustration on right-hand side depic ts grapple approaching to lift a fuel element from the reactor core. In the illust ration on left-hand side the entire machine has been retracted into the upper relatively cool chamber and is about to replace the five shield plugs in the cen tral access hole in the shielded floor of this chamber Keywords Tribology, Lubrication, Hostile environments Fulltext Preview (Small, Large)
