metal and ceramic packages
carbon nanotube reinforced composites. metal and ceramic matrices, 2009, p.243
Ngày tải lên :
04/06/2014, 15:04
... transition metals, for example, Fe, Co and Ni, rare earths such as Y and Gd, and platinum group metals such as Rh, Ru and Pt [25–32] In this respect, the graphite anode is doped with such metal catalysts ... metal particles used for nanotube synthesis The bimetallic catalyst contains one metal from Group VIII including Co, Ni, Ru, Rh, Pd, Ir and Pt, and one metal from Group VIB including Cr, W, and ... with a ceramic or metal matrix offer significant performance advantages over monolithic ceramics or metals Structural ceramics exhibit high mechanical strength, superior temperature stability and...
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Esthetic Dentistry and Ceramic Restorations pdf
Ngày tải lên :
22/03/2014, 22:20
... Materials such as ceramics and metals or ceramics and resins may be combined to produce novel materials with improved strength and flexibility (Budiansky et al, 1988; Faber and Evans, 1983; Clarke, ... by composition and fabrication technique The majority of ceramics are feldspar-based, and are used for metal- ceramic restorations However, the possible esthetic advantages of all -ceramic restorations ... 1260-1400° C ceramics are employed in porcelain jacket restorations, and are fired between 1080 and 1260° Low-fusing C ceramics made up the bulk of the material for produci ng metal- ceramic restorations...
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electrochemistry at metal and semiconductor electrodes
Ngày tải lên :
01/04/2014, 11:36
... between the conduction band and the hybridized valence band VBi is 2.2 eV, which is the direct band gap; and the band gap between the conduction band and the oxide valence band VBj is 3.1 to 3.5 ... in Metals 2,2.1 Energy bands and the Fermi level Electron occupation in the frontier bands of metal crystals varies with different metals as shown in Fig 2-7 For metallic iron the frontier bands ... valence band mainly comprises the frontier orbitals of oxide ions and the conduction band contains the frontier orbitals of metal ions In forming an ionic metal oxide crystal from metal ions and oxide...
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metal and alloy bonding an experimental analysis ; charge density in metals and alloys
Ngày tải lên :
30/05/2014, 00:31
... (Sodium and Vanadium Metals) describes about the nature of bonding and the charge distribution in sodium and vanadium metals are analysed using the reported X-ray data of these metals MEM and multipole ... 1.4 Metals 1.4.2 Vanadium Pure vanadium is a bright white metal, and is soft and ductile It has good corrosion resistance to alkalis, sulphuric and hydrochloric acid and salt water The metal ... and Vanadium Metals 4.2 Aluminium, Nickel and Copper 4.3 Magnesium, Titanium, Iron, Zinc, Tin and Tellurium 4.4 Cobalt Aluminium and Nickel Aluminium Metal...
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báo cáo hóa học:" A comparison of Leg Length and Femoral Offset discrepancies in Hip Resurfacing, Large Head Metal-on-Metal and Conventional Total Hip Replacement: a case series" pot
Ngày tải lên :
20/06/2014, 07:20
... Length and Femoral Offset discrepancies in Hip Resurfacing, Large Head Metal- on- Metal and Conventional Total Hip Replacement: a case series Katie A Herman1, Alan J Highcock2, John D Moorehead2 and ... [13] Altogether 19/20 patients with hip resurfacing and 4/20 patients with large head metal- onmetal and small head THR replacement met the set standard for leg length restoration This shows hip ... patients) and ≤4.62mm difference in femoral offset (10/20 patients) Hip resurfacing had the highest percentage of patients meeting these standards and the lowest average change in leg length and femoral...
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preparation and functionalization of macromolecule-metal and metal oxide nanocomplexes for biomedical applications
Ngày tải lên :
13/11/2014, 16:16
... of metal or metalloid elements surrounded by various types of ligands Metal alkoxides belong to a family of organometallic compounds which contain an organic ligand attached to the metal or metalloid ... on both the scientific and personal level, and for his amazing help with TEM, magnetization, and metal complex characterization Thank you to my SURP students David Fulks and Maggie Ashworth You ... Company 300 North Zeeb Road P.O Box 1346 Ann Arbor, MI 48106-1346 Preparation and Functionalization of Macromolecule -Metal and Metal Oxide Nanocomplexes For Biomedical Applications Michael L Vadala...
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Investigations of carbon nanotube based electronic devices with focus on metal and carbon nanotube contacts
Ngày tải lên :
10/09/2015, 15:52
... nanotube and metal contact 1.2.1 Atomic structure of carbon nanotube and metal contacts 1.2.1.1 Carbon nanotube and metal contact with side-contact structure 1.2.1.2 Carbon nanotube and metal ... contacts between CNT and metal, the precise position and alignment of CNT, and the presence of both metallic and semiconducting CNTs during synthesis and the inability to remove all the metallic CNTs ... structure should be favorable for CNT and metal contacts One promising way to achieve CNT and metal end-contact is by forming metal carbide at the CNT and metal interface (Zhang et al., 1999)...
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Novel filter design on organic single layer and ceramic multi layer substrates
Ngày tải lên :
13/09/2015, 21:14
... fractional bandwidth is about 8% S21 S11 Fig 2.6: Measured and Simulated S11 and S21 results of the bandpass filter The out-of-band response is also measured and shown in Figure 2.7 A second passband ... has been sandwiched The coupling was induced by a pair of square corner and the amount by its size A stripline T-junction was also utilized to form the I/O for this filter and a X-band bandpass ... Filter Design and Measurement 67 5.5 Conclusion 78 vi A DUAL DEGENERATE MODE X-BAND BANDPASS FILTER IN LOW-TEMPERATURE COFIRED CERAMICS (LTCC) 6.1 Introduction 79 6.2 Resonator Design and Analysis...
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Transition metal and rare earth doped stoichiometric lithium niobate crystals for holographic recording
Ngày tải lên :
16/09/2015, 17:13
... growth methods and constant wake my interest in the fundamental research In these years, their brilliance and wise counsel; their unique insights and perspectives and noteworthy talents and dedication, ... Karsten Buse and Demetri Psaltis and Ali Adibi [44, 60, 63, 64] and tested by several other groups [69 – 73] Their technique relies on crystals doped with two elements—iron [74] and manganese and exposed ... transition metal and rare earth dopants (Fe, Cu, Ce, Mn, Tb, Mg, Pr, In and Ru) [40, 49, 84, 91 – 98] used with CLN and SLN most promising from photorefractive properties point of view are Fe [41] and...
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Tài liệu Báo cáo " Study on reuse of heavy metal rich sludge in ceramic pigment and construction material production " docx
Ngày tải lên :
12/02/2014, 17:20
... 2.1 Heavy metal rich sludge: The heavy metal rich sludge discharged from the electroplating waste water treatment system in \ Heavy metal rich sludge Dehydration (dry at room temperature and at ... ~1.72.0kg) The ratio of treated sludge and raw material varied as 1:1; 1:3; 1:5; and 1:10 In the latest, treated sludge was mixed with red pigment and cement (white and black cement) a the ratio of ... Natural Sciences and Technology 24 (2008) 280-286 Results and discussion 3.1 Analysis result of heavy metal rich sludge composition Analysis result of chemical compositions of heavy metal sludge...
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The effects of clay a m e n d m e n t and composting on metal speciation in digested sludge liang qiao
Ngày tải lên :
23/09/2012, 14:47
... of metal speciation and plant available metal A comparison between the speciation of metals in the sludge compost and the metals extracted by DTPA is shown in Fig ! It can be seen that the Metal ... of heavy metals Relationship of metal speciation and leachable metal Since a M MgC12 solution is a stronger extractant than a 0.01 M CaC12 solution for metals from cation sites, more metals can ... extracted metals seems to be related to the changes in metal speciation and will be discussed below Metal speciation To determine the effect of red mud on the speciation of metals in sludge, the metal...
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Heavy metal cation retention by unconventional sorbents (red muds and fly ashes)
Ngày tải lên :
23/09/2012, 14:47
... and Disposal, p 7.24McGraw-Hill, New York Freeman H M (1988) Standard Handbook of Hazardous Waste Treatment and Disposal, p 6.5McGraw-Hill, New York Gerth J and Bruemmer G (1983) Adsorption and ... 381-382 Kluwer, Dordrecht, The Netherlands Tiitem E and Apak R (1995) The role of metal- ligand complexation equilibria in the retention and mobilization of heavy metals in soil In Contaminated Soil ... sorbents, preferably metallurgical waste solids, for heavy metal removal from contaminated water The heavy metal (Pb, Cd and Cu) removal capacity as well as sorption modelling of red muds and fly ashes...
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Investigation on K2Ti4O9 Whisker Absorbent and Applications in Heavy Metal Ions Removal
Ngày tải lên :
05/09/2013, 09:38
... Water and Environment Technology, Vol.5, No.1, 2007 RESULTS AND DISCUSSION Absorption behavior of PTW Fig shows the relationship between the quantity of PTW and the adsorption efficiency of Pb2+ and ... PTW crystal [5] So that the metal ions could rather easily penetrate into the crystal layer and substitute K+ ions to form stable metallic/potassium tetratitanates The metal ions would then be removed ... the ion size and the separation coefficient of PTW on these two ions [3] - 14 - Journal of Water and Environment Technology, Vol.5, No.1, 2007 The effect of time on absorption of Pb2+ and Cd2+ on...
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Application and Comparison of Two Biotic Ligand Models Predicting Copper Toxicity and Accumulation in Heavy Metal Tolerant Moss
Ngày tải lên :
05/09/2013, 10:15
... metal detoxification and conformation change of BL leads to more appropriate prediction of heavy metal toxicity and accumulation in organisms CONCLUSIONS Two BLMs predicting copper toxicity and ... extensive and appropriate prediction of copper toxicity and copper accumulation in organisms REFERENCES Ashton N W and Cove D J (1977) The isolation and preliminary characterization of Auxotrophic and ... rate and total copper concentration (A) or fCu (B) and relationship between copper accumulation and total copper concentration (C) or fCu (D) Table - Stability constants (95% confidence limits) and...
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Numerical simulation and performance test of metal hydride hydrogen storage system
Ngày tải lên :
05/09/2013, 14:58
... heat and mass transfer process in a metal hydride bed From Jemni and Ben Nasrallah [9, 10] studies, two dimensional heat and mass transfer within a metal hydride reactor for both absorption and ... metal hydride powder and thermal management The heat and mass transfer model through metal hydride beds is a complicated phenomenon and heat transfer models including conduction, convection and ... filtration and D=0.00237 is for LaNi5 The term ε and d are the porosity of metal hydride and average diameter of metal hydride particle, respectively In & the meanwhile, Jf is hydrogen flux and determined...
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PL/SQL Packages and Types Reference 10g Release 1 (10.1) Part No. B10802-01 December 2003 .PL/SQL
Ngày tải lên :
24/10/2013, 17:15
... procedures and functions provided in these packages and their external interfaces are reserved by Oracle and are subject to change Modifying Oracle supplied packages can cause internal errors and database ... column names, packages and classes, user names and roles, program units, and parameter values Enter sqlplus to open SQL*Plus You can back up the database by using the BACKUP command Query the ... PL/SQL Packages and Types Reference? The following sections describe the new features in Oracle PL/SQL Packages and Types Reference: s Oracle Database 10g Release (10.1) New Features s New Packages...
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Tài liệu Metal Machining Theory and Applications ppt
Ngày tải lên :
17/12/2013, 11:15
... of, and Chapters and with the development and application of, finite element methods in machining analysis Chapter is concerned with embedding process understanding into process control and optimization ... 1.13 A traditional – column and knee – design and (right and below) partly-built and complete views of a modern (bed) design of milling machine In Figures 1.16(a) and (b) the capacity of a milling ... of cutting tool materials (high speed steels, cemented carbides and cermets, and alumina and silicon nitride ceramics; diamond and cubic boron nitride materials are introduced in Chapter 3) are...
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Tài liệu METAL FORMING, SHAPING, AND CASTING docx
Ngày tải lên :
17/12/2013, 14:15
... OH, 1980 Metals Handbook, 8th ed., Vol 4, Forming, Vol 5, Forging and Casting, American Society for Metals, Metals Park, OH, 1985 Moore, H D., and D R Kibbey, Manufacturing Materials and Processes, ... 34.18) The sand may be natural, synthetic, or an artificially blended material Molds The two common types of sand molds are the dry sand mold and the green sand mold In the dry sand mold, the ... large-diameter parts 42 Metal Molds and Cores In permanent-mold casting, both metal molds and cores are used, the metal being poured into the mold cavity with the usual gravity head as in sand casting Molds...
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iec 60298 a.c. metal-enclosed switchgear and controlgear for rated voltages above 1 kv and up to
Ngày tải lên :
25/12/2013, 10:57
... switchgear and controlgear; - compartmented switchgear and controlgear (with - cubicle switchgear and controlgear one or more non -metal1 ic.partition.s); 3.102.1 Metal- clad switchgear and controlgear Metal- enclosed ... factory-assembled metal- enclosed switchgear and controlgear for alternating current of rated voltages above k v and up to and including 52 k v for indoor and outdoor installation, and for service ... Components contained in metal- enclosed switchgear and controlgear are to be designed and tested in accordance with their various relevant standards This standard supplements the standards for the individual...
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Tài liệu Packages and Importing Classes ppt
Ngày tải lên :
21/01/2014, 13:20
... introduced to a lot of new concepts up to this point, and now it's time to get your hands dirty In this exercise, you will create a simple custom class and use it in a Flash document Open Flash Select ... a new instance of the class and used it to perform a task 12 Close the test movie and save your work as CurrencyConverter2.fla In this exercise, you created a class and then used it in a Flash ... is create and use an instance of this class in a Flash movie Open CurrencyConverter1.fla in the Lesson07/Assets directory Notice that this FLA contains only one layer called Actions, and one frame...
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