statics geometric properties of areas

... second moment of area about x-x In = the second moment of area about X-X The importance of the parallel axes theorem is that it is useful for calculating second moments of area of sections of RSJs, ... second moment of area about its centroid of the RSJ of Figure 8.7 Figure 8.7 RSJ Solution I, = - ‘I’ outer rectangle (abcd) about x-x minus the s u m of the 1’s of the two inner of rectangles ... moments of area of two mutually perpendicular axes of a lamina is equal to the polar second moment of area about a point where these two axes cross 8.5 Parallel axes theorem Consider the lamina of...

Ngày tải lên: 08/04/2014, 11:28

... new refinement of the geometric- arithmetic mean inequality as an application of our results Lemmas This section is devoted to collecting some lemmas which we will need in the proof of our main results ... below) the graph of  Page of 15 Nakasuji et al Journal of Inequalities and Applications 2011, 2011:48 http://www.journalofinequalitiesandapplications.com/content/2011/1/48 Page of 15 Here I° denotes ... section, we first give a new interpretation of Jensen’s inequality by -mean Next, as an application, we consider some geometric properties of -means of a realvalued measurable function f on Ω...

Ngày tải lên: 21/06/2014, 00:20

... preservation properties, and some geometric properties like the preservation of coefficients’ bounds, positivity of real part, bounded turn, starlikeness, convexity, and univalence were proved The aim of ... (4.7) The reasonings in the case of Wξ ( f )(z) are similar The proof of continuity on D of Wξ ( f ) and Wξ∗ ( f ) is similar to that for Pξ ( f ) in the proof of Theorem 2.1(i) ∗ It remains to ... the unit disk, Journal of Analysis 10 (2002), [4] 101–106 , Geometric and approximate properties of convolution polynomials in the unit disk, Bul[5] letin of the Institute of Mathematics Academia...

Ngày tải lên: 22/06/2014, 21:20

... operations Chapter 7- Properties of Convolution 127 2.0 a Original signal Amplitude 1.0 0.0 -1.0 FIGURE 7-3 Example of calculus-like operations The signal in (b) is the first difference of the signal ... curve of the form: sin(x)/(x) , is used to separate one band of frequencies from another c Sinc 0.3 Amplitude Amplitude 0.3 0.2 0.1 0.0 -0.1 -20 -15 -10 Sample number Chapter 7- Properties of Convolution ... affect any of the output signal values As shown by the examples in Fig 7-6, the impulse response of a causal system must have a value of zero for all negative numbered samples Think of this from...

Ngày tải lên: 13/09/2012, 09:49

... summary of the independent parameters the modified foaming apparatus FOAMING PROPER TIES used far experi- Nature Fixed Diameter Porosity Volume Volume Mass of of sparging disc of sparging disc of ... = Tw Did = = percent of gas initially in 70 ml of foam (gas Flow Rate) - ml/min of nitrogen time to fill the column with foam volume of liquid in the foam initially volume of liquid drained from ... characteristics of protein i.e the foaming capacity of protein and the stability and strength of the foam Foaming ability i.e Gi denotes the amount of gas retained in the foam reflecting the potential of...

Ngày tải lên: 16/12/2012, 15:10

... University of Bari in 1979 University Researcher at the of Engines and Energy Institute of the Faculty of Engineering at the University of Bari from 1983 to 1987 Associate professor of Technical ... measure of conductance The analyses, done in the laboratory of Technical Physics of the Polytechnic of Bari, were performed on some samples of calcarenite sandstone and calcareous stone of Fasano ... typologies of building wall: a wall in blocks of calcarenite sandstone assembled with mortar, typical of the constructions of "Sassi of Matera," and a masonry made with dry calcareous stones of Fasano,...

Ngày tải lên: 05/09/2013, 14:58

... Figure Effect of time of heatsetting on the linearity of load extension in weft direction of knitted Ingeo™ Poly (lactic acid) Figure Mean effect of time of heatsetting on the linearity of load extension ... Increasing time of heatsetting had effect on tensile properties of PLA at varying times of 30s to 90s at temperature of 130°C Optimum effect on tensile properties occurred at times of 30 – 45s PLA ... [PLA] Figure Mean [Ā] of effect of time of heatsetting on the tensile extension EM [%] of Ingeo™ Poly (lactic acid) 3.2 Linearity of load extension curve LT [-] The linearity of load extension curve...

Ngày tải lên: 05/09/2013, 16:10

... pH Because most of the chemical and biochemical reaction are influenced by the pH it is of great practical importance The adverse affect of most of the acids appear below and of alkalis above ... quality criteria of an aquatic system In the system where rate of respiration and organic decomposition are high ,the DO values remain lower than those of system where the rate of photosynthesis ... growth and activities of microorganism 3.6 Biological Oxygen demand It has been used as a measure of the amount of organic materialism an aquatic solution which support the growth of microorganism...

Ngày tải lên: 05/09/2013, 16:11

Ngày tải lên: 08/10/2013, 20:20

... focused on the quasistatic rheology of a granular system, so why is all of this related to the description of its statics? As a matter of fact, the static properties of the studied sample are responsible ... a series of captors), and are thus much noisier 250 Static properties of granular materials F r p h z Fig 14.13 Sketch of the experimental set-up of Reydellet et al for the measure of the pressure ... horizontal position of the apex of the pile – also, changing the sign of x changes that of the shear σx z More generally, the stress state of the jammed grain packing is assumed to be of the form σx...

Ngày tải lên: 01/11/2013, 08:20

... Formaldehyde increases infectivity Viruses DNA or RNA  Shell of protein (capsid) surrounding nucleic acid   Classification on basis of nucleic acid  DNA viruses: eg Herpes simplex virus (HSV) ... body Varicella zoster virus (VZV) VZV: Chickenpox VZV: Shingles Re-activation of latent infection Suppression of cell mediated immunity Bacteria  Unicellular,  DNA and RNA  Binary  No prokaryotes ... (transfer of plasmid DNA) Important bacterial products 1: extracellular polysaccharide  CAPSULE condensed, well defined layer closely surrounding the cell contributes to invasiveness of pathogenic...

Ngày tải lên: 12/12/2013, 17:15

Ngày tải lên: 17/12/2013, 15:19

... and 2.8(f) These may be thought of as the absence of a plane of atoms (intrinsic stacking faults) or the insertion of rows of atoms that disturb the arrangement of atoms (extrinsic stacking faults) ... example of volume defects is presented in Fig 2.9 This shows MnS inclusions in an A707 steel Another example of a volume defect is presented in Fig 1.16(d) This shows evidence of $1–2 vol % of porosity ... approximately 0.3–0.5 of the melting temperature in degrees Kelvin Since the evolution of microstructure is often controlled by diffusion processes, a brief introduction to elementary aspects of diffusion...

Ngày tải lên: 23/12/2013, 00:15

... mechanical properties of materials It is not intended to be a comprehensive review of all the different aspects of mechanical properties; such a task would be beyond the capabilities of any single ... mechanical properties of semiconductor devices has thus emerged as one of the fastest growing areas in the field of mechanical behavior Copyright © 2003 Marcel Dekker, Inc FIGURE 1.13 Microstructures of ... macroscopic level of understanding of structure [Figs 16(a)–(d)] They are often unaware of the atomic and microstructural constituents that can affect the mechanical behavior of materials and of the role...

Ngày tải lên: 23/12/2013, 00:15

... University of Michigan, Ann Arbor He has held visiting positions at the University of California, Santa Barbara and the University of Tokyo He is the author of over 250 technical papers and of seven ... the physics of semiconductors, but also in how this physics can be exploited for devices The text addresses the following areas of semiconductor physics: i) electronic properties of semiconductors ... that allow modifications of electronic properties; use of alloys, quantum wells, strain and polar charge are discussed; iii) electron (hole) transport and optical properties of semiconductors and...

Ngày tải lên: 24/01/2014, 17:34

... sub-domain (item 1: ‘‘How often does your child have a lot of fun?’’ and item 4: ‘‘How often does your child feel happy?’’) The items of the SPS sub-domain Psychometric properties of the CHIP-CE composed ... discussion of the impact of ADHD on QoL as measured by the CHIP-CE can be found elsewhere (Escobar et al 2005, 2010) Internal psychometric properties of the CHIP-CE Missing values The proportion of CHIP-CE ... sub-domains of the CHIP-CE versus ADHD-RS total score were low (\0.4) (e.g., CHIP-CE The objective of this combined analysis was to evaluate the psychometric properties of the CHIP-CE in a sample of children...

Ngày tải lên: 12/02/2014, 19:20

... the current was turned off for a fixed duration toff of 0.5 s During ton, FePt nanoparticles were deposited on the surface of the electrode When the current was switched off, an ultrasound was ... has the potential benefit of combining sonochemistry with electrochemistry Some of these beneficial effects include acceleration of mass transport, cleaning and degassing of the electrode surface, ... percent of Fe was higher because the standard electrode potential Fe2+/Fe (-0.44 V [17]) is more negative than that of Pt4+/Pt (0.742 V [18]) Table1.Chemical composition, magnetic properties of the...

Ngày tải lên: 13/02/2014, 03:20

... increase up-spin of positions 2a and 2b About the role of La to improve hard magnetic properties of hexagonal ferrite, the Vietnamese researchers have published a large number of publications ... Properties of La-Co substituted M-Type Sr-Ferrite ultrafine Powders prepared from citrate recursors, Proc of the ICF9, SanFrancisco, California, USA (2004) 75 [9] L Neél Magnetic Properties of ... and properties of Sr ferrite, J Phys IV, France (1997) CI 313 [17] N.Chau, N.K.Dung, D.L.Minh, B.T.Cong, High hard magnetic properties of Sr hexagonal ferrite substituted by La, Proceedings of...

Ngày tải lên: 13/02/2014, 03:20