recent advances in the science and technology of desulfurization of diesel fuel using ionic liqu
Got Food? Recent Advances in Food Science and Technology docx
Ngày tải lên :
31/03/2014, 22:20
... diabetes There are many different varieties; some increase the production of insulin while others increase the body‘s response to it and other can delay the absorption of glucose into the intestine These ... population of Finnish men and women over the age of 50 and checked the levels of vitamin D in these people over a 29-year period In the group studied, 50 instances of Parkinson‘s disease occurred, and ... an increase of 46 percent since 1980 These shocking statistics are a result of supply and demand, the availability of food Other than the calorie intake, another cause of weight gain is lack of...
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The Science and Technology of Materials in Automotive Engines Part 1 doc
Ngày tải lên :
10/08/2014, 12:21
... an increasing use of Science and technology of materials in automotive engines fuel injection In a petrol engine the fuel is normally injected into the inlet manifold behind the inlet valve The ... fuel is injected directly into the combustion chamber, as with direct injection diesel engines 1.1.3 The diesel engine The name diesel comes from the inventor of the diesel engine, R Diesel There ... engine motion into smooth rotation The combustion of the air -fuel mixture takes place in the chamber formed between the piston and the cylinder head The piston then moves up and down in the cylinder...
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The Science and Technology of Materials in Automotive Engines Part 3 doc
Ngày tải lên :
10/08/2014, 12:21
... with a liner is placed in the holding mold before pouring The mold and core are decayed after casting, so that the aluminum block enclosing the cast -in liner remains The complex gas (and coolant) ... (a) and then introduced into the die cavity (b) using a hydraulically driven plunger Once the metal has solidified, the die is opened (c) and the casting removed (d) 44 Science and technology of ... iron liner This integral core is placed into the holding mold Molten aluminum is then poured into the mold After shaking off the sand, a porthole opening connected to the gas passage like that in...
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The Science and Technology of Materials in Automotive Engines Part 5 potx
Ngày tải lên :
10/08/2014, 12:21
... shows a ring installed in the ring groove The piston with rings is inserted into the cylinder bore The ring then expands from its initial diameter (d1) and is forced tightly against the cylinder ... mm, the ring being very thin to minimize weight It is the self-tension of the ring itself that presses the ring into the cylinder bore wall During operation, the ring glides up and down, touching ... Ring movement Face Piston 4.6 Cross cut view of a piston ring installed in the groove The ring contacts the bore wall at the ring face The inside surface against the ring surface is called ring...
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The Science and Technology of Materials in Automotive Engines Part 6 pps
Ngày tải lên :
10/08/2014, 12:21
... Valves control the gas flowing into and out of the engine cylinder The camshaft and valve spring make up the mechanism that lifts and closes the valves The valve train determines the performance ... the cam lobe The axial feeding pushes the end of the tube to minimize the wall thinning out 5.4 Reducing friction in the valve train The rotation of the cam lobe generates friction on the bucket ... Assembling of camshaft using hydroforming process The steel tube is placed in the die where the cam lobe inserts are already positioned The internal pressurized water expands the steel tube to fix the...
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The Science and Technology of Materials in Automotive Engines Part 7 pps
Ngày tải lên :
10/08/2014, 12:21
... Machining Molding with press Giving enough strength for the following machining 147 Rough machining to reduce the grinding allowance Finish grinding Finish grinding with diamond whetstone Inspection ... illustrates the principle using a load-deflection curve The spring material has the yield point A before setting The setting loads and strains the spring material up to B After setting, the load ... Ni, can be used in this way Since the higher Si, Cr and V content restrict softening during tempering, the decrease in hardness during nitriding is less The steel, therefore, retains a high fatigue...
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The Science and Technology of Materials in Automotive Engines Part 8 pptx
Ngày tải lên :
10/08/2014, 12:21
... (con-rod) and piston, to smooth revolutions The con-rod rides on the crankpin via a plain bearing The main bearing of the crankcase supports the main journal of the crankshaft The deep grooves in monolithic ... grains in the strained matrix, which eliminates strain in the microstructures and causes softening (Fig 8.8) The hexagonal pattern (grain boundary) indicates that the metal has recrystallized and ... initiate pitting The white portion called the white etching region consists of hard ferrite and pearlite 180 Science and technology of materials in automotive engines are the cause of the pitting This...
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The Science and Technology of Materials in Automotive Engines Part 9 pdf
Ngày tải lên :
10/08/2014, 12:21
... case-hardening processes The terminology of carbonitriding and nitrocarburizing often creates misunderstandings Carburizing is the term for adding only carbon In carbonitriding, the main element ... tempering after quenching The monolithic crankshaft uses induction hardening25 of the crankpin and the corner radii between the crankpin and web The assembled crankshaft uses induction hardening of ... strength and buckling strength The higher the yield strength, the higher the fatigue and buckling strengths On the other hand, machinability relates to the hardness The higher the hardness, the lower...
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The Science and Technology of Materials in Automotive Engines Part 10 ppsx
Ngày tải lên :
10/08/2014, 12:21
... plain bearing shown in Fig 9.16 rides on the crankpin, fitting between the con-rod and the crankpin It is a removable insert, as is the main bearing insert that supports the main journals of the ... has the longest life The left-hand line corresponds to the old technology, which does not include secondary refining This diagram reflects the history of the refining technology of steel Shown in ... Secondary refining after steel-making The increased life of bearing steel is due to improvements in the refining process Refining is carried out in conventional steel-making, but secondary refining is...
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The Science and Technology of Materials in Automotive Engines Part 11 pptx
Ngày tải lên :
10/08/2014, 12:21
... reinforcing the piston-ring groove of the aluminum piston (see Chapter 3) The thermal inertia of the turbine housing affects start-up emissions Low thermal inertia means that the temperature of ... broken off by vibration or highpressure water blasting (f) Next, the gates and runners are cut off, and sand blasting and machining finish the casting Investment castings often not require any further ... by the center housing, to which the compressor and turbine housings are attached The turbine section is composed of a cast turbine wheel, a wheel heat shroud and a turbine housing, with the inlet...
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The Science and Technology of Materials in Automotive Engines Part 12 doc
Ngày tải lên :
10/08/2014, 12:21
... the melting temperature of iron, so that it makes casting easy Fine patterns in the mold can be transferred precisely into the cast part because cast irons expand 276 Science and technology of ... furnace The steels produced are cast into various ingot shapes (billet, bloom or slab), mainly using the strand, or continuous, casting process, which solidifies the melt continuously The steel ingots ... °C, the temperature of the water will rise until it is the same as that of the room This is the equilibrium state, and it will remain stable unless the temperature of the room is changed The...
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The Science and Technology of Materials in Automotive Engines Part 13 pdf
Ngày tải lên :
10/08/2014, 12:21
... move through the grain boundary, and thus the metal is strengthened The smaller the grain size, the greater the number of dead ends, hence the stronger the iron Microstructural hardening: microstructural ... metals There are three main types of bonding: welding, mechanical bonding and adhesive bonding Welding technologies are classified as fusion welding, pressure welding or brazing Fusion welding joins ... the characteristics of the different casting technologies In sand casting and gravity die casting, the weight of the molten metal itself fills the mold cavity V process (1) Mold type Green sand...
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The Science and Technology of Materials in Automotive Engines Part 14 docx
Ngày tải lên :
10/08/2014, 12:21
... reciprocating engine 1–5 advantages and disadvantages see also diesel engines; four-stroke engines; two-stroke engines recovery 171–3 recrystallization 171–3 reduction 232–4 refining effect on bearing ... valve spring 158–60 resin bonded sand mold 42 316 Index resin coating 296 resonance 153–4 retained austenite 181, 187, 215, 287–8 retainer 207, 210, 226 rheo casting (semi-solid metal die casting) ... 238 rigidity 170 ring carrier (ring insert) 75–6 ring fluttering 94 ring gap 89–91, 94–5 ring rolling 178 rocker arm 111, 113, 128, 129–30 roller bearing 129–30 needle roller bearing 169, 178, 209–10,...
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The Science and Technology of Carbon Nanotubes potx
Ngày tải lên :
05/03/2014, 17:20
... become one of the most important materials in the 21st century In this chapter, keeping the application of CNT i n mind, an outline of the present situation and the future of the synthesis of this ... development of chiral CNTs illustrating the positions of the scattering centres The SWCNT is formed by making the limiting lines AB of the strip of graphene structure to coincide on rolling up the strip ... reflexions The extent of the deformation of the hexagon depends on the direction of incidence of the electron beam with respect to the tube axis With increasing tilt angle of the specimen pairs of reflexions...
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The Science and Technology of Carbon Nanotubes III ppt
Ngày tải lên :
27/06/2014, 17:20
... become one of the most important materials in the 21st century In this chapter, keeping the application of CNT i n mind, an outline of the present situation and the future of the synthesis of this ... development of chiral CNTs illustrating the positions of the scattering centres The SWCNT is formed by making the limiting lines AB of the strip of graphene structure to coincide on rolling up the strip ... reflexions The extent of the deformation of the hexagon depends on the direction of incidence of the electron beam with respect to the tube axis With increasing tilt angle of the specimen pairs of reflexions...
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The Science and Technology of Carbon Nanotubes pptx
Ngày tải lên :
27/06/2014, 18:20
... become one of the most important materials in the 21st century In this chapter, keeping the application of CNT i n mind, an outline of the present situation and the future of the synthesis of this ... development of chiral CNTs illustrating the positions of the scattering centres The SWCNT is formed by making the limiting lines AB of the strip of graphene structure to coincide on rolling up the strip ... reflexions The extent of the deformation of the hexagon depends on the direction of incidence of the electron beam with respect to the tube axis With increasing tilt angle of the specimen pairs of reflexions...
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RECENT TREND IN ELECTROCHEMICAL SCIENCE AND TECHNOLOGY pot
Ngày tải lên :
29/06/2014, 09:20
... Electrochemical Science and Technology The changes of the thermodynamic parameters of curium versus the radius of the solvent cation show the increasing in strength of the Cm-Cl bond in the complex ... technique The influence of the nature of the solvent (ionic radius) on the thermodynamic properties of curium compound was assessed It was found that the strength of the Cm–Cl bond increases in the line ... the strength of complex ions and the decrease in contribution of D to the “hopping” mechanism The increase of temperature leads to the increase of the diffusion coefficients in all the solvents...
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Báo cáo y học: " Advances in the genetics and epigenetics of gene regulation and human disease" pps
Ngày tải lên :
14/08/2014, 17:22
... and the position of cross-overs Using in silico and in vitro analyses, Sapienza’s group have shown a relationship between increased rates of meiotic recombination and genomic imprinting Imprinted ... involved in cell-cycle control and cell-size regulation in Drosophila Using flow cytometry, Björklund and colleagues analyzed the RNAi-induced loss -of- function of 70% of the genes in Drosophila, including ... method for determining transcription factor binding sites, Hallikas reported the binding sites of the transcription factors GLIs, TCF4 and c-ETS1, which are involved in different signaling pathways...
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Recent Advances in the Biology, Therapy and Management of Melanoma Edited by Lester M. Davids ppt
Ngày tải lên :
23/03/2014, 14:20
... 16 Recent Advances in the Biology, Therapy and Management of Melanoma factor containing multiple enzymes including XPA, XPB and XPD then unwind the DNA in the vicinity of the damaged bases, and ... brings both of these together in an easy, readable way The fact that there is so much ongoing scientific and clini‐ cal research in the field of melanoma is an indicator of the importance and ... without the inherent risk of photodamage and malignancy The 10 Recent Advances in the Biology, Therapy and Management of Melanoma use of tanning salons despite the established risks, however, remains...
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