mathematics of transient analysis

... known methods of steadystate analysis, which will allow us to simplify the classical approach of transient analysis 1.2 APPEARANCE OF TRANSIENTS IN ELECTRICAL CIRCUITS In the analysis of an electrical ... knowledge of mathematics and is less related to the physical matter of transient behavior of electric circuits than the former This chapter is concerned with the classical method of transient analysis ... #1 CLASSICAL APPROACH TO TRANSIENT ANALYSIS 1.1 INTRODUCTION Transient analysis (or just transients) of electrical circuits is as important as steady-state analysis When transients occur, the currents...

Ngày tải lên: 31/12/2013, 22:30

... the right of the peak being the mirror image of the side to the left of the peak Suppose we had a group of data where the mean of the data was 11 and the standard deviation of the group of data ... common of the types of measures of location, or central tendency of a body of data, a distribution However, you should be aware that the arithmetic mean is not the only available measure of central ... There is a loss of information content in binning this way, yet the profile of the distribution of the trade profits and losses remains relatively unchanged DESCRIPTIVE MEASURES OF DISTRIBUTIONS...

Ngày tải lên: 23/03/2014, 23:20

... Number of primary source signals J Number of secondary source signals K Number of error sensors L AP order N Number of elements of vectors xi (n) and w j,i (n) M =N ·I ·J Number of coefficients of ... role of the energy conservation relation employed in [12] No approximation has been used for deriving the expression of (23) 4.2 −1 TRANSIENT ANALYSIS AND STEADYSTATE ANALYSIS The transient analysis ... approach of [12] for analyzing the convergence behavior of multichannel FX-AP algorithms In this paper, we extend the analysis approach of [4] and study the transient and steady-state behavior of a...

Ngày tải lên: 22/06/2014, 22:20

... element analysis , ASCE Journal of Engineering Mechanics, Vol 115 No 9, pp 1993-2010 Singh, K.M and Kalra, M.S (1996), “Time integration in the dual reciprocity boundary element analysis of transient ... functions of p u-parameters (Wood, 1990) Table I lists some schemes of this family and related parameters The choice of the schemes has been made keeping in view the stringent stability requirements of ... an application DRBEM to the transient advection-diffusion problems In addition to the previously used set of coordinate functions of radial basis type, two more sets of coordinate functions – the...

Ngày tải lên: 16/06/2016, 01:11

... coeditor of the IEEE publication “Modeling and Analysis of System Transients Using Digital Programs” (1999) In 2010, he was the coordinator of the tutorial course Transient Analysis of Power ... analysis and simulation of power system transients, since the behaviour of power equipment is very dependent on the transient phenomena: it depends on the range of frequencies associated to transients ... frequency-domain analysis offers certain features that complement the advantages of time-domain analysis [16–18] In addition, the calculation of the steady state of a power system, prior to the calculation of...

Ngày tải lên: 28/11/2016, 14:03

... activity of disease in sarcoidosis or HP In addition, finding of encapsulated exudates may suggest desquamation of early stage of Masson body which implies possible diagnosis in a limited number of ... records of a total of 2260 patients with various lung diseases between 1984 and 2006 at our Nippon Medical School affiliated hospitals (Table 1) Among them, 76 of sarcoidosis and 14 of HP patients ... Patients’ group showing the highest rate of lymphocytes Of the 2260 patients, 488 (21.6%) showed a lymphocyte rate of higher than 40% Clinical diagnoses of these patients included sarcoidosis (22.1%),...

Ngày tải lên: 03/11/2012, 11:48

Ngày tải lên: 17/09/2013, 15:16

... during storage of specimens, but also during the headspace analysis As shown in > Fig 8.1A, the decomposition product isobutyl alcohol is detected even in headspace GC analysis of the standard ... of 0.4 mL of blank blood and 0.4 mL of IS- containing pentane solution in a glass vial with a Teflon-septum screw cap, which has been cooled with ice, and vortex-mixed for s; a 3-µL aliquot of ... concentration of isobutyl nitrite detected by analysis only shows one at the time point of the injection into GC and does not reflect the in vivo level Under the present GC conditions, the peak of isobutyl...

Ngày tải lên: 18/10/2013, 00:15

... a stream of nitrogen gas at room temperature e iii The residue is dissolved in 100 µL of the dichloromethane solution of DAEMO (IS solution); a 1-µL of it is injected into GC/MS for analysis ... TIC and mass chromatograms; (b) an EI mass spectrum of the t-BDMS derivative of EMPA; (c) a CI mass spectrum of the same derivative of EMPA data of animals According to the reports by the US army ... JK, Paasivirta J et al (1981) Trace Analysis of Chemical Warfare Agents An Approach to the Environmental Monitoring of Nerve Agents Ministry of Foreign Affairs of Finland, Helsinki, pp 27, 28, 37–39,...

Ngày tải lên: 18/10/2013, 00:15

... GC/MS analysis of ∆9-THC-11-oic acid in human urine [15, 16] e) A method of silylation of glassware to be done before analysis was reported [17]; such treatment suppresses the adsorption of cannabinoids ... 10:316–323 14) Yamamoto I (1992) Methods for analysis of cannabis and its components In: The Pharmaceutical Society of Japan (ed) Standard Methods of Chemical Analysis in Poisoning – With Commentaries, ... 2.4 Mass spectra of the methyl ester plus TMS and TMS derivatives of ∆9-THC-11-oic acid The Substance Abuse and Mental Service Administration (SAMSA) in USA set the cutoff value of ∆9-THC-11-oic...

Ngày tải lên: 24/10/2013, 19:15

... method Qualitative analysis is made by the comparison of the retention time of a peak of a specimen with that of the authentic standard and also by the confirmation of the absence of such a peak ... low levels of morphine starting from a large amount of a specimen cannot be a proof of the intake of the drug The level of morphine in urine of healthy subjects determined by GC/MS was reported ... oxidoreductive potential of the hydroxyl group of the phenol moiety, it is not suitable for analysis codeine or M-3-G For cautions and cutoff values upon detection of trace levels of morphine, the readers...

Ngày tải lên: 24/10/2013, 19:15

... gas: He; flow rate: 2.1 mL/min Procedures i Analysis of nitrate i ii iii iv v vi A 0.2-mL volume of a test specimen, 20 µL of IS solution and 0.2 mL of the saturated silver acetate solution e ... ratio of nitrate to IS obtained from a test specimen is applied to the calibration curve to calculate its concentration ii Analysis of nitrite i A 0.2-mL volume of a test specimen and 0.1 mL of ... 0.2-mL volume of the supernatant solution is transferred to a new polypropylene tube of the same type, followed by addition of 0.5 mL of concentrated sulfuric acid f and 0.5 mL of mesitylene...

Ngày tải lên: 24/10/2013, 19:15

... interfered with by the coexistence of high concentrations of CO-Hb [6] As low as about 0.2 % of Met-Hb can be measured accurately However, when high concentrations of sulfhemoglobin (SHb) may interfere ... cadavers of sulfide or polysulfide poisoning (see the chapter “Hydrogen sulfide and its metabolite” of this book) Met-Hb in blood is not stable at room temperature and even at –30 °C When analysis of ... x The percentage of Met-Hb is calculated by the following equation: Met-Hb % = 100 (A1–A2)/ (A3–A4) Assessment and some comments on the method The present method for analysis of Met-Hb in blood...

Ngày tải lên: 24/10/2013, 19:15

... However, in Japan, such criteria set by official institutions are not available for drugs of abuse Upon judgements of analytical data, the idea of cutoff values should be adopted with reference ... confirmation of a target compound is usually achieved by agreement of its mass spectrum with that of the authentic standard Since, with simultaneous use of a deuterated IS, a mass spectrum of a target ... estimate the cause of death, time of death and time after drug use, using the ratio of cocaine to BE and the brain-to-blood ratios of cocaine and BE The ratios only give rough estimation of them References...

Ngày tải lên: 29/10/2013, 01:15

... added to mL of whole blood or urine M NaHCO3: a 8.4-g aliquot of NaHCO3 is dissolved in distilled water to prepare 100 mL solution Chloroform/ethanol (9:1, v/v): a 100-mL volume of the mixture ... eluted with mL of chloroform/ethanol (9:1) into a glass vial A small amount of upper aqueous layer is carefully removed by aspiration with a Pasteur pipette The organic layer (chloroform) is evaporated ... ng IS and one of various concentrations of pentazocine to each vial containing mL of blank whole blood or urine and mL distilled water, followed by the above procedure The number of different...

Ngày tải lên: 29/10/2013, 02:15

... stabilizer use or use of less proven agents) Meta -analysis as interpretation The above example demonstrates the dangers of meta -analysis, as well as some of its benefits Ultimately, meta -analysis is not ... for instance, the opinion of the construction worker does not count the same as the opinion of a professor of physics What matters is the consensus of those who are of similar background and ... definitive scientific reviews of evidence difficult to achieve Clinical example: meta -analysis of antidepressants in bipolar depression Recently, the first meta -analysis of antidepressant use in acute...

Ngày tải lên: 01/11/2013, 11:20

... acetone/chloroform (4:1, v/v); (B) chloroform/methanol/n-hexane (4:2:1, v/v) Assessment of the method The Rf values of LSD were 0.29 with the (A) solvent system and 0.55 with the (B) system The colors of ... solutions are combined After the pH of the solution is adjusted to 8.5, the solution is extracted with an appropriate amount of chloroform four times The combined chloroform extract is evaporated to ... TLC or LC, and extracted with chloroform The resulting residue is subjected to analysis by the direct inlet method of EI-MS Analytical conditions Any type of an MS instrument can be used; electron...

Ngày tải lên: 08/11/2013, 01:15

... monitored) The mass spectra of TFA derivatives of MDMA and its three metabolites obtained from the urine specimen are shown in > Fig 7.5 For the proof of the use of MDMA, detection of MDA along with MDMA ... stream of nitrogen and reconstituted in 0.1 mL of DPM (IS) solution A 1-µL aliquot of it is injected into the GC/MS system with a DB-17MS systemk i Assessment of the methods EI mass spectra of TFA ... proof of MDMA use, detection of MDMA and its metabolite MDA is being generally performed for urine specimens In this chapter, the procedures for GC/MS and LC/MS analyses of MDAs in the forms of...

Ngày tải lên: 08/11/2013, 01:15

... amounts of methanol; a 10–20 µL aliquot is spiked into mL of a whole blood or urine specimen M NaHCO3 solution: 8.4 g of NaHCO3 is dissolved in distilled water to prepare 100 mL solution Chloroform/methanol ... eluted with mL of chloroform/methanol (9:1) into a glass vial v A small amount of upper aqueous layer is carefully removed by aspiration with a Pasteur pipette The organic layer (chloroform) is evaporated ... procedure The number of different concentrations of PCP should not be smaller than The calibration curve is composed of PCP concentration on the horizontal axis and peak area ratio of PCP to IS on...

Ngày tải lên: 08/11/2013, 01:15

... principles of good writing and good speaking are constant, the way they are applied can be markedly different In the 'I' of the Storm: the Simple Secrets of Writing & Speaking (Almost) like a Professional, ... importance of recognising and adopting the "expository writing attitude" cannot be over-stated, because it can dramatically change the very nature of what you are writing Here are a couple of examples ... leave creative writing, because most of what we write, and say, is expository What we mean by "good writing"? We are now ready to return to the notion of how mathematics applies to good writing,...

Ngày tải lên: 10/12/2013, 05:15