history of electric power systems

... such as: age of caregiver; education and literacy level of caregiver; distance of house to the clinic; size of family; and status of parents (alive/dead) Isaakidis et al Journal of the International ... resistant and one possibly resistant to tenofovir Six out of 22 children had developed a profile of extensive resistance, explained by the presence of the K65R mutation in four children and Q151 ... thirty-eight of the 268 (51.5%) children were on ART for at least 36 months at the time of the assessment Median follow-up time from ART initiation until end of observation time or date of failure...

Ngày tải lên: 20/06/2014, 08:20

... break-up of droplets in turbulent flow to the case of dense dispersions and combining with criterion of minimization of the total system energy This model takes into consideration of free energy of ... In this type of flow, intermittent upward and downward flow of liquid phase can also be visualized This is due to the balance of shear force of vapor phase and the combined effects of imposed pressure ... environment to work ii Table of Contents Abstract vii List of Tables viii List of Figures ix List of Symbols xiii Introduction 1.1 Multiphase flow-General 1.2 Background of the study 1.3 Problems...

Ngày tải lên: 28/09/2015, 13:28

... bottom section of the column at using single aeration 83 Profiles of the Reynolds stresses component for the bottom section of the column at using double aeration 84 Profiles of the Reynolds ... of the column at using tetra aeration 86 Profiles of the Reynolds stresses component for the middle section of the column at q = 10.4 m/s using different aeration 87 xii List of Tables LIST OF ... diagram of bubble column with draught tube showing the field of view for the testing zone of WDT and DT columns 37 Fig 3.3.1.2 3D-Schematic diameter of draught tube 39 Fig 3.4 a Design of orifice...

Ngày tải lên: 22/10/2015, 21:14

... coordinates of the launching point For many problems the launching point is taken at the origin In this case xo = and yo = Note: In this analysis of projectile motion we neglect the effects of (4-8) ... determine the coordinates of particle P to be xPA and xPB , respectively xPA = xPB + xBA Here xBA is the coordinate of B with respect to A d d d We take derivatives of the above equation: xPA ... A and B determine the position vector of particle P to be r r rPA and rPB , respectively r r r rPA = rPB + rBA We take the time derivative of both sides of the equation r r r d r d r d r r r...

Ngày tải lên: 13/12/2013, 05:15

... AND UNBALANCED OPERATION OF SYNCHRONOUS MACHINES The analysis of unbalanced operation of synchronous machines is quite involved, requiring manipulation of a large number of equations to calculate ... show that the instantaneous power consists of an average value and time-varying components 9.3 SYMMETRICAL COMPONENT ANALYSIS OF INDUCTION MACHINES Although the method of symmetrical components ... set of currents of abc sequence will produce an air-gap MMF that rotates counterclockwise at an angular velocity of ωe By definition, the positive sequence is the abc sequence, and it is often...

Ngày tải lên: 16/02/2014, 18:48

... to solve this type of problem using an adjacency matrix They reduced the number of adjacency constraints by using matrix algebra and taking advantage of the symmetric nature of the matrix Early ... however, often requires explicit consideration of spatial patterns, such as “connectiv- ity” of management units that results from certain vegetation relationships For example, the connectivity of ... decision matrix with m as the number of stands and n as the number of treatments for one stand, and ’ denotes the transpose, x where xi is the i-th row vector of ~ j for the i-th stand and ~ j is...

Ngày tải lên: 07/08/2014, 10:21

... Kellgren-Lawrence grades of or higher were included More than 70% of patients had a Kellgren-Lawrence score of or None of the control individuals had ever exhibited any signs or symptoms of arthritis or ... ethnical committees of the Medical School of Nanjing University, and single nucleotide Page of (page number not for citation purposes) polymorphism (SNP) Research Center of RIKEN, and informed ... [12], based on the random effects model Power estimates were calculated using the software R Results RHOB The allelic frequency of the susceptible G allele of rs585017 was similar in Chinese and...

Ngày tải lên: 09/08/2014, 10:23

... lack of clinical symptoms and of detectable virus in the blood circulation in a number of animals may create serious problems in the early detection of an outbreak, caused by such variants of the ... technical problem, or the amount of vaccine virus was so low that it was under the level of the detection capacity of the VI test in quite a number of animals As further tools of direct virus detection, ... characteristic of an outbreak of classical swine fever in an area of high pig density Veterinary Record 1996, 12:367-371 Ressang AA: Studies on the pathogenicity of hog cholera I Demonstration of hog...

Ngày tải lên: 12/08/2014, 18:22

... cut-off value 15 for strain of –6.5 % a sensitivity of 23 % and specificity of 87 % was calculated for the detection of infarcted segments (AUC 0.6, confidence interval 0.53 – 0.64) A 111 cut-off ... cut-off value of –10.34% resulted in a sensitivity of 54 % and specificity of 59 % (see Table 6) The intra- and inter-observer variation of our data is congruent with the data of Jarnert et al ... comparison to adjacent and non-infarcted segments with a sensitivity of 80% and a specificity of 70% (AUC 0.8) with a cut-off value of less than 1.95 cm/s Poor agreement between VVI and TDI measurements...

Ngày tải lên: 25/10/2012, 11:15

... 42 APPENDIX 2: RANKING OF THE IMPORTANCE OF REWARDS .43 v List of Tables Table Title Page TABLE 1: SAMPLE OF COMPANIES INVESTIGATED TABLE 2: SAMPLE OF INTERVIEWEES TABLE ... evaluated through a series of criteria such as volume, coverage (number of outlets visited per day), productivity (numbers of outlets sold to over number of outlets visited), number of new outlets opened, ... Otherwise, we have to lay off some of them However, layoff is very complicated in an SOE and nobody wants to take charge of that.” – said Mr Ho Ngoc Bac, National Sales Manager of Vietha Beer Co This...

Ngày tải lên: 13/04/2013, 10:31

... of the Z-source inverter for the proposed UPS Fig Block diagram of the inner loop Fig Block diagram of the outer loop Fig TABLE II PARAMETERS OF THE SIMULATION MODEL Simplified block diagram of ... School of Electrical Engineering and Automation, Hefei University of Technology, where, since 2004, he has been a Professor His research interests include renewable energy applications, power ... applications, power electronics, and automation systems Po Xu received the B.Eng degree in power systems and the Ph.D degree in power electronics from Hefei University of Technology, Hefei, China, in 2001...

Ngày tải lên: 03/01/2014, 19:12

... factor of 18.8% and an Rfree of 22.3% with over 90% of the residues in the most favored region of a Ramachandran plot (Table 2) The resulting model is depicted in Fig The Ca backbones of the ... TVA-II group As the polypeptide superposition of Fig places the three catalytic residues of CDase (Fig 1) within less than ˚ A of the positions of those of TVA-II, and as the active centers closely ... enzymes ThMA and BaCD nor in the majority of a-amylases Ca-II is located in the loop between a1 and a2 of domain A (Fig 2) and Fig Stereoview of a ribbon plot of CDase showing the N-terminal domain...

Ngày tải lên: 08/03/2014, 02:20

... triton X-100, 1.4 U of glutathione reductase and 50–100 lg of recombinant protein, was incubated at 30 °C for After of equilibration, the reaction was initiated by the addition of the peroxide substrate ... Analysis of GPXle1- and GPXha2-catalyzed reduction of t-butyl hydroperoxide (100 lM) with different concentrations of GSH (A) and thioredoxin (B) The reciprocal apparent maximum velocities of GPXle1 ... activity due to auto-oxidation of GSH as well as the activity of any potentially co-purified E coli proteins were also examined Corrections were made to estimate the activity of recombinant proteins...

Ngày tải lên: 08/03/2014, 22:20

... to the presence of a lysine (Lys48) engaging Asp78, one of the iron ligands, in a salt bridge interaction [25] For investigation of the physiological basis of the coexistence of two Dps proteins ... increased formation of reactive oxygen species as a result of the photosynthetic transport of electrons, such that, besides photosystems I and II, which are the main targets of photodamage, other ... spectrum of a peak at 6500 eV typical of iron ions and the high affinity of glutamates for iron Other distinctive features of the DpsA-Te ferritin-like interfaces concern the nature of the stabilizing...

Ngày tải lên: 15/03/2014, 09:20

... a substantial amount of the oxidized form (13 019 Da) Fig Gel filtration of crude venoms of two KBf (samples and 2) Venom powder (15–20 mg) of KBf was dissolved in 200 lL of deionized water and ... proteins of Bungarus fasciatus I.-H Tsai et al Fig Ca2+-binding affinity of two Pro31PLAs (Bf Va and VI) and a K31-PLA (Bf-X-1) The initial rate of hydrolysis of mM diC16PC in the presence of mM ... numbers of isoforms for PLA and 3FTx from the pooled Bf venom were high, but the intraspecies or the geographic variations of this venom species have not been explored Intra-species variations of...

Ngày tải lên: 16/03/2014, 12:20

... understood the power of its eight bar logo and its brand name Coke understood the power of its ingredients The Disney Company understands the value of Mickey Mouse P&G is never tired of telling people ... to create assets Job security: The very fact of closure of Lehman and lay-offs by GM, Microsoft and IBM in 2008 only questions the very hypothesis of job security as it exists in salaried jobs ... “Money is not the cause of all evil, lack of it is” Well if you believe in that, read on After you have chosen your profession whether it is banking, advertising, manufacturing, software, or something...

Ngày tải lên: 18/03/2014, 03:20

... scale of the cancer problem and the impact it has on the lives of hundreds of thousands of people every year We have made huge steps forward in improving survival and in preventing thousands of ... to reduce their risk of cancer Three-quarters of the UK public will be aware of the main lifestyle choices they can make to reduce their risk of getting cancer • The number of smokers will fall ... has shown that half of all regular smokers will eventually die of their habit This body of evidence has played a leading role in the reduction in smoking rates from over 80% of men in 1950 to 23%...

Ngày tải lên: 22/03/2014, 16:21

... 1)m1 m2 m3 + m1 m2 + m2 m3 + m1 m3 max{mi } 338 KUO-CHANG CHEN Proof of Main Theorems We begin with the proof of Theorem 1: Proof of Theorem Assume m3 = 1, M = m1 + m2 + Let F (m1 , m2 ), G(m1 , ... class of the ˜ ˜ projection αφ of αφ in V \ Δ over t ∈ [0, 1] is one of the two generators for ˜ \ Δ) The left side of Figure depicts the path α over t ∈ [0, 1] ˜ ˜φ π1 (S A solution x of (1) ... still a difficult task to prove the existence of solutions with prescribed topological types and masses Calculus of variations, in spite of its long history, should be considered a relatively new...

Ngày tải lên: 29/03/2014, 07:20

Ngày tải lên: 30/03/2014, 01:20