development of telecommunication systems

... Introduction 1.1 Development of telecommunication systems A reliable long distance communication system is a human necessity and a backbone of modern civilization Beginning from the early days of long ... lack of a suitable light source The development of lasers in 1960s helped to overcome the problem of light sources for optical carriers The second problem was related to the development of high-quality ... solutions of RF-plasma cell in the MBE growth of dilute nitrides Problems Cause of the problem Solution (1) Difficult maintenance of (1) Improved RF shielding stable flow of injected gas of matching...

Ngày tải lên: 14/09/2015, 08:50

... Investigation of thermal benefits of roof top garden in the tropical environment Build Environ 2005, 38, 261–270 [9] Prado R.T.A., Ferreira F.L Measurement of albedo and analysis of its influence ... thermal benefits of rooftop garden in the tropical environment Build Environ 2005, 38, 261–270 [2] Doulos L., Santamouris M., Livada I Passive cooling of outdoor urban spaces The role of materials ... surroundings The aim of this study was to investigate the effect of construction materials that contributes to UHI and the thermal behavior of different materials used in surfaces of buildings Infrared...

Ngày tải lên: 05/09/2013, 15:28

... author of different articles published in International Journal Chemical and Mechanical Engineering Currently, Dr Abid is Professor of Mechanical Engineering at National School of Engineers of Sfax ... obtaining a better understanding of the nature of acoustic wave dynamics in the intake system of an internal combustion engine The model has proved in identifying the role of pipe resonance in the intake ... flow in the intake and exhaust systems and of the cylinder combustion phenomena for the MPI spark ignition engines The result of simulation has been compared with that of experimental test in order...

Ngày tải lên: 05/09/2013, 16:30

Ngày tải lên: 16/12/2013, 08:15

... the degree of saturation of the air as a ratio of the actual (ea) to the saturation (es) vapor pressure at the same temperature (T): e RH = 100 a (12) es b Sensible heat The density of (moist) ... provided by the Hydro-Meteorological Data Center (HMDC) of the Ministry of Natural Resources and Environment (MONRE) of Vietnam Due to the effects of predominating wind direction (north-east in the ... an average value of 3,697 mm The annual runoff coefficient (runoff / precipitation) in this period intensively varies between 0.49 (1982) and 0.81 (1995) with an average value of 0.73 V.V Nghi...

Ngày tải lên: 05/03/2014, 16:20

... staining of liver B C As apoE possesses a central role in the metabolism of plasma lipoproteins and the development of dietinduced obesity, in this study we sought to determine how apoE affects the development ... role in the deposition of dietary triglycerides in the liver of mice and the development of diet-induced NAFLD (Fig 2D) Body weight measurements and body composition analysis of mice fed a western-type ... disturbed, mainly because of extensive steatosis (Fig 4C) Discussion In this study, we investigated the role of apoE in the development of NAFLD in mice As consumption of lipid-rich diets and sedentary...

Ngày tải lên: 05/03/2014, 23:20

... terms of volumes and in terms of credit standards applied on loans to enterprises, have signi…cant e¤ects on real economic activity This highlights the importance of the monitoring of credit developments ... control for the impact of the stance of bank credit standards on lending and activity Overall, the …ndings of this paper highlight the importance of monitoring and assessing credit developments on a ... terms of the number of employees on the payroll in SMEs compared to the total number of employed people the SME sector is substantially more important in the euro area (with a percentage of 67% of...

Ngày tải lên: 15/03/2014, 10:20

... inhibition of CREB 2600 phosphorylation or dephosphorylated CREB may be a negative regulator of CREB-responsive genes [22,23] In an effort to investigate the mechanism of the inhibitory effect of BetA ... overexpression of CREB in the presence of BetA increased the CREB level 1.7-fold, but did not increase the pCREB level, whereas knockdown of CREB (siCREB) decreased the levels of both CREB protein ... (1995) Discovery of betulinic acid as a selective inhibitor of human melanoma that functions by induction of apoptosis Nat Med 1, 1046– 1051 Kasperczyk H, La Ferla-Bruhl K, Westhoff MA, Behrend...

Ngày tải lên: 16/03/2014, 01:20

... question (the number of nodes to remove) of either or 2; and a set of node-pairs was defined that would give correct answers to the third question (the number of edges to remove) of either 1, or The ... importance, both the set of + drawings and the set of drawings needed to be tested for the overall effect of the aesthetics Those sets of drawings for which the effect of the aesthetics were significant ... Conclusions These aim of these empirical tests was to indicate to the designers of graph drawing algorithms the most effective aesthetics to use from the point of view of human reading of relational...

Ngày tải lên: 16/03/2014, 18:20

... Hold Your Hand" in 1964 sparked on of the most important musical events of this century, The British Invasion of America The British Invasion was a movement of British music and musicians across ... meteoric rise of the American idol and I am still unable to see him as anything more than a youth of mediocre talent Only a completely non-critical audience nourished on the watery pap of pop music ... in succession The sixth single of the album had the largest advanced orders in recording history The Beatles produced six more albums for a total of eight, all of which went to number one The...

Ngày tải lên: 21/03/2014, 22:03

... listening to Much of the popular music of today contains messages about sex and violence The artists who sing the music often become the idols of countless children across the country, many of whom copy ... other forms of media will also apply here (McAfee) In the first few year of a child's life he is very impressionable Much of his personality is formed by the time he goes to his first day of kindergarten ... be fine All too often children are left to make up their own minds about things Next time you wonder about how easily children can be convinced of something think of the myth of Santa Claus:...

Ngày tải lên: 21/03/2014, 22:52

... other forms of media will also apply here (McAfee) In the first few year of a child's life he is very impressionable Much of his personality is formed by the time he goes to his first day of kindergarten ... be fine All too often children are left to make up their own minds about things Next time you wonder about how easily children can be convinced of something think of the myth of Santa Claus: ... control of what a child sees and how he interprets it Many of the facts in this paper are startling, but does this mean we should ban all violence from everything? That will never happen In all of...

Ngày tải lên: 21/03/2014, 22:52

... solubility of fusion proteins is not necessarily indicative of either proper folding or of increased solubility of the protein of interest We propose that the success of fusion protein systems should ... (a) the role of the N-terminal extension; (b) the role of the D to N mutation; and (c) the role of the sequence and length of the C-terminal extension To address whether presence of extra residues ... crystallized The final yield of Pfg27 from Pfg27A was 24 mgÆL)1 of starting culture while it was for Pfg27B–F Effect of temperature on the expression profiles We examined the role of temperature in enhancing...

Ngày tải lên: 23/03/2014, 21:20

... preferred methods of payment While Feinberg's and Soman's results are free of this confound, the generality of their ®ndings is also limited, but by different factors For example, only one of these studies ... values of any of the three prizes The speci®c descriptions were: (1) One pair of 3rd row balcony tickets for Celtics-Miami game, Sunday April 19, 1PM, at the Boston Garden (2) One pair of bleacher ... auction The other pair of tickets was to a regular season baseball game, between the Red ALWAYS LEAVE HOME Sox and the Toronto Blue Jays There was also a consolation prize of a pair of banners (one...

Ngày tải lên: 29/03/2014, 03:21

Ngày tải lên: 30/03/2014, 01:20

... Differential stabilization of p53 by VRK2 isoforms Fig Expression of two VRK2 isoforms (A) Detection of VRK2 proteins in several cell lines that were determined by immunoblotting of whole-cell extracts ... stabilization of p53 by VRK2 isoforms S Blanco et al Fig Stabilization of endogenous p53 and activation of p53dependent transcription (A) Stabilization of endogenous p53 by the VRK2B isoform in A549 ... Differential stabilization of p53 by VRK2 isoforms S Blanco et al Fig 10 Effect of VRK2B on ubiquitination and acetylation of p53 (A) Reduced ubiquitination of p53 by Mdm2 in the presence of VRK2B H1299...

Ngày tải lên: 30/03/2014, 11:20

... steady-state concentration of selenoprotein M is regulated at the level of transcription was surprising In vertebrates the expression of all 3846 Fig 11 Influence of selenium on the size of silica aggregates, ... version 3.5 University of Washington, Seattle Dayhoff MO, Schwartz RM & Orcutt BC (1978) A model of evolutionary change in protein In Atlas of Protein Sequence and Structure (Dayhoff, MO, ed.), pp ... selenium at the transcriptional level, whereas the expression of silicatein is independent of the presence of sodium selenite Identification of selenoprotein M, spiculeassociated protein and silicatein...

Ngày tải lên: 30/03/2014, 20:20

... MHz NMR spectrometer For identification of the product of enzymatic oxidation 10 mg of the substrate (1.1 mM) was incubated with 700 lg of tyrosinase in 40 mL of 100 mM sodium phosphate buffer, pH ... between dopaquinone and the phosphonic diphenol Because of the irreversibility of the systems (cyclization of dopaquinone and decomposition of the phosphonic o-quinone) the values obtained are not ... Identification of the oxidation product of amino-(3,4-dihydroxyphenyl)methyl phosphonic acid Chemical oxidation of amino-(3,4-dihydroxyphenyl)methyl phosphonic acid with stoichiometric amount of sodium...

Ngày tải lên: 31/03/2014, 09:20

... behavior of CEO compensation following bank loan agreement The purpose of this paper is to examine the behavior of CEO compensation following the grant of a major bank loan Using a sample of 743 ... value between 10 to 27% of the firm’s market value of equity The upper half of our sample represents large loans with loan values higher than 27% of the firm’s market value of equity Then, we test ... price reaction to many of the above forms of financing A part from the positive market response to the announcement of bank loans, several studies also establish the uniqueness of bank loans Dahiya,...

Ngày tải lên: 01/06/2014, 13:58

... setting of anterior cervical fusion surgery, pain associated with autograft harvest often overshadows pain from the primary surgical site [11] A perceived high rate of donor site pain has been one of ... demonstrated excellent biological potency of rhBMPs that may even surpass the efficacy of autograft in terms of promoting spinal fusion [12] Unfortunately, the high cost of rhBMPs suggests that appropriate ... from a total of 205 patients contacted, resulting in a response rate of 83% Of these 170 patients, longitudinal data for both one-year and final follow-up were available on a subgroup of 139 patients...

Ngày tải lên: 18/06/2014, 18:20