Absorber

... E-Electric Heater A-Ammeter V-Voltmeter MM- Micro Manometer Figure (a) Schematic view of experimental apparatus of solar air heater (b) Sectional view of duct An electric heater 1000 mm × 160 mm is made ... element on absorber plate of solar air heater Karmare and Tikekar [16] reported an experimental investigation and developed correlation for heat transfer coef...

Ngày tải lên: 05/09/2013, 15:28

... conceived of the study, performed the synthesis of the lipid nanoparticles loaded with different UV absorbers, investigate the changes in the crystallinity of the lipid matrix and carried out the TEM ... samples The incorporation of two sunscreen couples into SLN leads to a further advantage - penetration of UV absorbers into the skin is thereby redu...

Ngày tải lên: 21/06/2014, 06:20

... DYNAMIC ABSORỈiĩ R DRILLING FOR IKSTHULIEKT Nguyen Van Dao For damping t h e s e l f - e x c i t e d o s c i l l a t i o n of ... e s s e n t i a l d e c r e a s e o f t h e o s c i l l a t i o n of t h e i n s t r u m e n t For t h e c a s e o f weak a b s o r b e r , f o r o p tim a l e x t i n g u i s h i n g of t h ... e n t and cleiT.il ( ) I n th e c a s e Df s t r o n g a b s...

Ngày tải lên: 08/04/2015, 15:27

... 3] j - w( v I+0 IjiJ, ^ DYNAMIC ABSORBERS FOR SYSTEMS WITH DISTRIBUTED PARAMETERS 19 We shall find th e s o lu tio n of (4 4) with b' nndary co n d itio n s (4.2) in the form: sin - n x sin j ... lity relation s Jo = ( Mk " z when Y J ; k = J (2.3) DYNAMIC ABSORBERS FOR SYSTEMS WITH DISTRIBUTED PARAMETERS To find the e q u a tio n s for VVn (t), Yn(x)i Un we s...

Ngày tải lên: 08/04/2015, 15:28

... , where p is the mass per unit length of the beam material, E is Y oung’s m o d u lu s, and I is the m om ent of inertia of the cross section of the beam The other notations have the same m eanings ... to the equilibrium of the sy s te m under consideration is stable if MULTI-DYNAMIC ABSORBER E F F E C T R ecalling the form ula ( l ) for the “negative” fr...

Ngày tải lên: 08/04/2015, 15:29

... v) Dynamic absorber effect for self-excited systems R m 7777777777777777777777777777, Fig I h e r e t h e f u n c t i o n R { x , x) e xp re ss es t h e a c t i o n o f the self-excited force, ... note on the dynamic absorber, J Mechanics, Hanoi, 2, 1982 N g u y e n Van D a o , N g u y e n Van Dinh, Dynamic absorber for self-excited systems Proceedings of XIVth conferenc...

Ngày tải lên: 08/04/2015, 15:36

... Experimental investigations with conventional absorbers Study of falling film hydrodynamics in horizontal tube banks Study of existing droplet hydrodynamics model Study of falling film absorption models ... present research The main objective of the present research was to study the thermal performance of horizontal tubular absorbers with and without f...

Ngày tải lên: 14/09/2015, 10:00

... properties of the InGaN quantum structures, including InGaN/ GaN quantum wells and InGaN quantum dots 1. 3 InGaN/ GaN quantum wells and quantum dots InGaN is an important alloy for fabricating III-nitride ... Electron mobility μ (cm2 V -1 s -1) Thermal conductivity χ (W K -1 cm -1) 9.0 4.0 9.7 3.0 12 .8 0.4 11 .8 0.25 3.0 2.0 2.0 1. 0 13 50 800 6000 13 00 1...

Ngày tải lên: 14/09/2015, 14:02

... second) is used, and there are 25 6 or 5 12 samples in each scanning Here, one sample represents one line of scanning, which then consists of 25 6 or 5 12 sampling points 2. 3.4 Scanning electron microscopy ... excition transition and bound exciton transition Eb is the free exciton binding energy and Ebx is the bound exciton binding energy In addition to the radiative transitio...

Ngày tải lên: 14/09/2015, 14:02

... Section 3. 3 will be dedicated to the study on the effects of V-pits on the morphological and optical properties of InGaN/ GaN quantum wells Finally, in Section 3. 4, the InGaN/ GaN quantum dot saturable ... this study will only be focused on the saturable absorbers and SESAMs operating in the blue region In this chapter, Section 3. 1 will be focused on...

Ngày tải lên: 14/09/2015, 14:02

... coating After the separate study and calibration, the DBR and AR coatings were finally incorporated with the InGaN/ GaN 8-QW saturable absorber presented in 148 Chapter Design & Fabrication of GaN- based ... the GaN- based monolithic DBRs as shown in Fig 4. 1 [Ponce2003; Moustakas2001; Waldrip2001; Yao20 04; Lin20 04] In addition, in Fig 4. 10, the oscillation fringes...

Ngày tải lên: 14/09/2015, 14:02

... fabricated by the InGaN/ GaN 8-QW saturable absorber, as discussed in Chapter 5. 1 Simulation First of all, the origin of the interference fringes within the stopband of the GaN- based SESAM was investigated ... Furthermore, after thinning the GaN buffer, the period of the interference-induced oscillation fringes was increased and there was only one interference minimum falling...

Ngày tải lên: 14/09/2015, 14:02

... quantum wells and quantum dots, operating in the blue wavelength region were investigated For InGaN/ GaN quantum well saturable absorbers, a novel and convenient method to reduce the absorption ... and contributed to different PL emission bands For quantum dot saturable absorbers, in this work, a 3-layer InGaN quantum dot sample was fabricated and its nonlinear...

Ngày tải lên: 14/09/2015, 14:02

Ngày tải lên: 06/01/2016, 12:21