highly efficient and ultraprecision fabrication of structural ceramic parts with the application of electrolytic in process dressing grinding
Modeling and analyses of electrolytic in process dressing (ELID) and grinding
Ngày tải lên :
16/09/2015, 17:11
... characters of the ELID -grinding wheels, the wear of wheels during pre -dressing and during in- process dressing have been explained in detail The influence of the wear of grinding wheels for different ... truing (b)Begining of dressing (c)After dressing Diamond particle Insulating layer Elid cycle Removed oxide layer (e)End of grinding (d)During grinding Figure 3.10 Mechanism of the ELID grinding ... chip/wheel interactions the in- process dressing is stimulated Thus the condition of the grinding wheel topography is maintained throughout the grinding process that encourages the continuous application...
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Highly efficient and stable photoluminescence from silicon nanowires coated with sic
Ngày tải lên :
16/03/2014, 15:05
... as to integrate the various advantages of the SiC with the important nanoscaled materials in order to advance its applications in photophysics and device physics SiNW were synthesized by thermal ... relating to the presence of the silicon oxide was found The low PL intensity is likely due to the presence of the silicon oxide shell, which covers the SiNWs The silicon oxide can absorb and re¯ect ... reduction of the diameters of the SiNW upon ion bombardment The PL peak is in a similar region to that of the porous silicon, showing no apparent change dierence when the dimension of the silicon...
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Development of an intelligent electrolytic in process dressing (ELID) grinding system 1
Ngày tải lên :
14/09/2015, 08:44
... surface increases and the electrolytic dressing restarts with the flow-out of bonding material from grinding wheel The protrusion of diamond grains from the grinding wheel therefore remains constant ... repeated during the grinding process to achieve stable grinding The above mentioned technologies for in- process dressing of grinding wheel have their own advantages and disadvantages The comparative ... evaluation of dressing on demand concept for ELID grinding This technique aims to optimize the dressing power by monitoring the grinding condition and thus to save the grinding wheel from excessive dressing...
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Development of an intelligent electrolytic in process dressing (ELID) grinding system 2
Ngày tải lên :
14/09/2015, 08:44
... work In their study Ohmori et al investigated the pre dressing current profile and explained the phenomenon of decreasing trend of the current with dressing time During grinding the grinding force ... grinding wheel 16 Literature review 2.1.4 Electrochemical method of dressing One of the ways of doing electrochemical dressing of the grinding wheel is the ELID grinding This method of dressing ... power supply for electrolytic in- process dressing of the metal bonded grinding wheel in order to achieve efficient grinding condition, back in 1985 In their study, the grinding condition was...
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Development of an intelligent electrolytic in process dressing (ELID) grinding system 3
Ngày tải lên :
14/09/2015, 08:44
... evaluation of an intelligent ELID grinding machine contact with the workpiece surface to set the origin of the working coordinate system as shown in figure 3.3(b) If C is the position of the spindle ... movements of all machine axes Then another query is sent to the controller to know the real position of the machine, which is converted into coordinates of the contact point of the stylus tip with the ... tolerance In this algorithm consideration of the 59 Development and performance evaluation of an intelligent ELID grinding machine START Generate the tool path for lens grinding by considering the grinding...
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Development of an intelligent electrolytic in process dressing (ELID) grinding system 4
Ngày tải lên :
14/09/2015, 08:44
... calculated by comparing the grinding wheel profile (Before grinding and after grinding) Figure 4.13 (a) shows profile of the grinding wheel before the grinding and after grinding for conventional ... studies of ELID grinding that during the dressing of the grinding wheel a soft insulating oxide layer is formed and it may break as the grinding force increases which occurs throughout the 89 Dressing ... by controlling the voltage with cutting force feedback grinding process During the whole grinding operation formation and break down of the layer continues The breakage of the insulating layer...
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Development of an intelligent electrolytic in process dressing (ELID) grinding system 5
Ngày tải lên :
14/09/2015, 08:44
... for ELID grinding (b) Grinding wheel profile after applying proposed in- process truing (c) Wheel profile after the grinding 95 Design and development of in- process truing for ELID grinding 5.2 ... Design and development of in- process truing for ELID grinding as described in chapter Electrolytic in- process dressing (ELID) is one of the electrochemical methods for in- process dressing and truing ... truing of grinding wheels However, conventional ELID grinding does not use controlled dressing of the grinding wheel to ensure acceptable grinding wheel profile [39-57] Note that truing is the dressing...
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Development of an intelligent electrolytic in process dressing (ELID) grinding system 6
Ngày tải lên :
14/09/2015, 08:44
... ELID grinding applies constant voltage across the dressing zone without monitoring the grinding wheel condition This may lead to overdressing of the wheel which eventually will shorten the tool ... is to change the voltage amplitude according to the change in grinding condition and the other objective is to control pulse width by monitoring the grinding wheel profile Currently these two objectives ... been observed in both cases Dressing 116 Conclusions current has also been found to be more stable and uniform in this new form of ELID grinding Truing of the grinding wheel is crucial in precision...
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Engineering of binary metal oxide nanostructures for highly efficient and stable excitonic solar cells
Ngày tải lên :
12/09/2015, 10:22
... identifies that the depth of trap states in the band gaps of these n-MOS which originates as a result of structural disorders, plays a dominant role in determining the efficiency and stability of OSCs ... energetically favours the transfer of an electron from the LUMO of the donor to the LUMO of the acceptor The competing process of luminescence, which involves the radiative recombination of excitons, ... water and electrode material reacting with the organic materials During the fabrication process of OPVs, it is difficult to avoid introduction of some oxygen and water and their absorption in the...
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a study on structural and semantic components of idioms in english and vietnamese
Ngày tải lên :
18/07/2014, 15:00
... taking a lot of time and energy The method mainly used in these studies is the etymologizing, i.e the origins of idioms are recovered in order to make the forms and the idiomatic meanings transparent ... idioms) to be observed, the style of recording the observed information (grouping and categorizing), and the selection of pertinent data of observation The observation following these characteristics ... accurate and appropriate use of expressions which are in the broadest sense idiomatic is one distinguishing mark of a native command of the language and a reliable measure of the proficiency of foreign...
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báo cáo khoa học: " A novel method for efficient and abundant production of Phytophthora brassicae zoospores on Brussels sprout leaf discs" pot
Ngày tải lên :
12/08/2014, 03:21
... Germany The Netherlands The Netherlands The Netherlands The Netherlands Brassica rapa subsp.pekinensis Brassica oleracea var alba Brassica oleracea var.gemmifera Brassica rapa subsp.pekinensis ... plants, including Arabidopsis The major advantages are its easy handling, the possibility of inoculating large numbers of plants and the continuous production of zoospores over a period of at least ... compatible and others in incompatible interactions [1] This pathosystem has the potential to become a model for studying oomycete-plant interactions, allowing concurrent molecular analysis of the host...
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structural and functional features of fronting in english versus vietnamese equivalents = đặc điểm cấu trúc và chức năng của khởi ngữ trong tiếng anh và tương đương trong tiếng việt
Ngày tải lên :
28/02/2015, 11:54
... 3.1.1 The Structures of Fronting and Khởi ngữ The analysis and discussions of the structures of fronting and khởi ngữ” deals with their syntactic features in terms of sentence elements and parts of ... contrasting, thematizing, topicalising or discourse linking, in which the most typical functions of fronting are discourse linking and topicalising The „focusing‟ function in English; otherwise, ... call the pseudo-cleft construction a „thematic equative‟ because in this construction, there is the equated proportion of the two parts of information in the sentence: the Theme and the Rheme Other...
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Theoretical modeling of combustion characteristics and performance parameters of biodiesel in DI diesel engine with variable compression ratio
Ngày tải lên :
05/09/2013, 16:11
... where b and c are the coefficients of polynomial equation and R gas constant (kJ/kg.K) 3.3 Pressure and temperature during compression The initial pressure and temperature at the beginning of the ... containing the unburned gases, and the other containing the burned gases separated by the flame front Prior to start of combustion (SOC), the unburned zone temperature Tu equals to the single ... biodiesel with different compression ratios are presented in Figures 8, respectively, as the compression ratio increasing there is a decrease in the engine power due to an increase in the load and thermal...
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Process evaluation and treatability study of wastewater in a textile dyeing industry
Ngày tải lên :
05/09/2013, 17:03
... marginally with the addition of bleaching powder and then passing through 20 cm bed of C.B.C as shown in Figure COD of the final effluent for 10% bleaching powder addition and after passing through ... Degree in Civil Engineering with specialization in Environmental Engineering from the same university in the year 1996 He received his Ph.D Degree in Civil Engineering for the research work in the ... Bengal, India Both the continuous and batch dyeing processes are practiced in this unit Eight basic sub-processes namely Desizing, Scouring, Neutralization, Dyeing, Soaping, Dye fixing, Hardening/Softening...
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A study on syntactic, semantic and pragmatic features of exaggeration in english and vietnamese
Ngày tải lên :
26/11/2013, 13:16
... stories and novels in the hope of finding out the similarities and -5- -6- differences in English and Vietnamese, and then to provide some CHAPTER practical suggestions for teaching and learning these ... materials should take into account area this detail in teaching and preparing the linguistic content and the set 5.5.1 Emotion and Exaggeration of exercises for the teaching and practising exaggeration ... researches and thesis) and research articles, extracting exaggerating expressions from film scripts in English and Vietnamese - Calculating the frequency of occurrence - Generalizing and identifying the...
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Investment evaluation methods and required rate of return in finish publicly listed companies
Ngày tải lên :
17/12/2013, 15:08
... representing 46 percent of the companies in their sample Their sample was taken from the list of 500 largest companies in Finland The list included public and non-public companies Out of their 104 responses, ... wealth The payback method, on the other hand, among other things, ignores the time value of money, and cash flows beyond the cutoff date, and can lead to inferior investment decisions INVESTMENT ... companies according to Graham and Harvey (2001) Sweden seems to fall in between Finland according to the older surveys, and the U.S., since Sandahl and Sjögren (2003) find that 78.1 percent of the largest...
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Báo cáo khoa học: Efficient and targeted delivery of siRNA in vivo pdf
Ngày tải lên :
06/03/2014, 01:23
... successfully inhibited the expression of VEGF, thereby suppressing the growth of hepatocarcinoma tumors in mice [87] In addition, no noticeable increase in inflammatory cytokines, including interferon-a and ... vivo Regardless of administration routes, the final destination of siRNA is the cytoplasm of the target cell, where it incorporates into RNA-inducing silencing protein complex and encounters target ... encoding siRNA against pituitary tumor transforming gene significantly inhibited the growth of the pituitary tumor transforming gene 1-overexpressing hepatocellular carcinoma cells in vitro and in...
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Environmental Adaptations and Stress Tolerance of Plants in the Era of Climate Change pptx
Ngày tải lên :
14/03/2014, 10:20
... serine, leucine, and valine, the nonprotein amino acids citrulline and ornithine (Orn)), together with the imino acid Pro, and the amides such as glutamine and asparagine are accumulated in higher ... many mRNAs is suppressed and the expression of a certain set of genes including the luminal binding protein gene BiP is induced The underlying mechanisms of UPR in yeasts and mammals have been well ... are potent inducers of NO in Arabidopsis, but putrescine and its biosynthetic precursor arginine are not There are many more examples of NO affecting the concentrations of PAs and over the past...
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Báo cáo khoa học: "Comparing Objective and Subjective Measures of Usability in a Human-Robot Dialogue System" potx
Ngày tải lên :
17/03/2014, 01:20
... quarter of the interaction looking at the robot head, and changed their gaze to the robot 23.5 times over the course of the interaction Again, there was a wide range of results for both of these ... results Opinion of the robot as a partner 21 items addressing the ease with which subjects were able to interact with the robot Instruction quality items specifically addressing the quality of the assembly ... conversations with the robot In most of the previous PARADISE-style studies, measures addressing the performance of the automated speech-recognition system and other input-processing components were included...
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flesh and the devil clarence brown technical devices and cinematic movements of 1920s in the construct
Ngày tải lên :
21/03/2014, 22:02
... This usage of lighting defines characters and allows a differentiation of the sinfulness of 'David' and the 'Wife of Uriah' and the holiness of the Minister The character of the Minister is also ... first prop of significance The harsh whiteness of the paper contrasts the general bleakness of the setting, while the content conflict with the action of the film and the undertones of the minister's ... implying this of the minister Through drinking the water he purifies himself and through his teachings from the bible he instills this sense of purity in others Although the prominence of his...
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