determination of the needed sample size

... that they can get the most mileage out of the time they invest if they are familiar with the typical format of journal articles and the kind of information normally included in each section of the ... describe the distributional shape of their data If the scores in a data set approximate the shape of a normal distribution, most of the scores are clustered near the middle of the continuum of observed ... subjects were used, who they were, and how they were selected A full description of the participants is needed because the results of a study often vary according to the nature of the participants used...

Ngày tải lên: 28/06/2014, 20:20

... nutrient)] The ADC of dry matter, nutrients in the tested ingredient were calculated according to the following formulae: ADC of DM of test ingredient (%) = (ADC of DM of the test diet - 0.7 x ADC of ... in the quality of cassava meal sources between studies 3.3 The digestibility of ash The digestibility of ash (or crude ash) of three plant-ingredients is reported in table The digestibility of ... 6.25) by the Kjeldhal method after acid digestion, crude lipid by the Soxhlet method The determination of chromium III (trivalent) that involves digestion of organic matter, solubilisation of chromium...

Ngày tải lên: 28/08/2013, 09:14

... Presently, in the ancient pottery TL dating the following steps for the determination of annual dose rate are: (i) place the thermoluminiscnece dosimeter at the field; (ii) determine the environmental ... dose rate (µR/h) Water in the pore of pottery or in the soil absorbs some parts of the radiation that would otherwise reach the thermoluminescent grains Alternatively, on the infinite matrix basis, ... 0.073 2.283 ± 0.073 The equivalent dose (Q) was evaluated applying the additive dose method: The thermoluminescence intensities of the samples were measured after the exposure to the radiation from...

Ngày tải lên: 13/02/2014, 04:20

... 36% of the interaction of the full peptide with the binding cavity of SM3 The sizes of the surfaces were determined using distances between ligand ˚ atoms and protein atoms of less than A These ... nonbinding bottom portion of the next Fab is formed by the C-terminal segment RPAP The size of the interaction surface between ˚ the peptide and the non binding bottom of the Fab is 173 A2 which ... to binding by analyzing the surface of the residues covered by the protein They also see an interaction of the C-terminal part RPAP with the surface of the antibody In the shorter peptide that...

Ngày tải lên: 21/02/2014, 15:20

... nutrient)] The ADC of dry matter, nutrients in the tested ingredient were calculated according to the following formulae: ADC of DM of test ingredient (%) = (ADC of DM of the test diet - 0.7 x ADC of ... in the quality of cassava meal sources between studies 3.3 The digestibility of ash The digestibility of ash (or crude ash) of three plant-ingredients is reported in table The digestibility of ... 6.25) by the Kjeldhal method after acid digestion, crude lipid by the Soxhlet method The determination of chromium III (trivalent) that involves digestion of organic matter, solubilisation of chromium...

Ngày tải lên: 25/02/2014, 10:20

... is the number of target nuclei; ε is the photopeak efficiency of the detector; Iγ is the branching ratio or intensity of the gamma ray ; λ is the decay constant; F is correction factor; ti is the ... at the photopeak energy The average activity of the activation foils served as photon flux to which the foils were exposed The relation between the average photon flux, φ, and the number of detected ... activation method, the actual results of the measurements are the counting rates of the irradiated foils After irradiations and appropriate cooling time, the foils were taken off and the induced gamma...

Ngày tải lên: 22/03/2014, 11:20

... ((1/T )) = the | · |∞ -completion of k an algebraic closure of k∞ the | · |∞ -completion of k∞ the algebraic closure of k in C∞ ¯ a fixed choice in k of a (q − 1)st root of −T the subring of the power ... Let I ⊂ L be the GCM type of H with respect to L Let r be the cardinality of the set of ¯ ideals of L that are G-conjugate to I Then H0 is of rank ≥ r over k[t] Proof By Theorem 4.6.6 there exist ... |a(n) |∞ < ∞ n=0 Therefore the radius of convergence of each entry of ψ is infinite 3.1.4 Remark Theorem 3.1.1 is in essence the (dual) t-motivic translation of Yu’s Theorem of the t-Submodule...

Ngày tải lên: 22/03/2014, 16:20

... failure of the primer 2–DNA template hybrid primer extension reaction was due to the effects of the hairpin structure on the process of primer annealing to the DNA template Analysis of secondary ... DNA due to the unpaired 3¢-end of the primer, until the ÔGGÕ bases in the hairpin stem are freed by elevating the reaction temperature and paired with the ÔCCÕ bases at the 3¢-end of primer In ... and the mutants were screened by DNA sequencing of the DNA in the plaques by the method described in [18] The oligonucleotide 5¢-GGTTGTC GGCGTCGATAATCAAACT-3¢ was used as the sequencing primer Determination...

Ngày tải lên: 23/03/2014, 13:20

... study is the first to determine the full structure of glycoglycerolipid in thermophilic bacteria Meiothermus spp The structural information will be very useful for further investigations of the mechanisms ... (m/z 1096) (Fig 1B) The lack of adequate detection of N-acyl lipids was due to the relative stability of the amide bond under methanolysis conditions The significant amount of hydroxy fatty acids ... were removed and the amino group was acetylated (B) MS/MS spectra (+ev) revealed the sugar sequence of the tetraglycosyl glycerol Fig The 500 MHz spectra of 1H NMR and 1D TOCSY of the N-acetyl tetraglycosyl...

Ngày tải lên: 23/03/2014, 13:20

... presents the main difficulty in the mechanization of the determination of the constituents of SC X denotes a letter or letter sequence which could be part of the preceding as well as of the following ... excitement) Nevertheless, since the only basis for the mechanical determination of the constituents of a SC is the occurrence or non-occurrence of the memory equivalent of an input form in the MT memory, ... and the other characteristic of the other group The most satisfactory solution of this problem is as follows: a) If the target meanings of all SC involved can be inferred from the meanings of the...

Ngày tải lên: 23/03/2014, 13:20

... release of NADP+ with concomitant displacement of the equilibrium distribution of enzyme species towards further reduction of the FAD (i.e further transfer of hydride equivalents from NADPH to the ... mixing the human CPR FMN domain with its FAD/NADPH domain (% 16-fold) (29) However, the domain mixture still reconstituted only % 2% of the activity of the full length CPR In the case of NR1, the ... accurate determination of the FAD potentials, titrations of the NR1 FAD/NADPH domain were performed on samples of identical concentration over small ranges (100–150 mV) of the potential range,...

Ngày tải lên: 23/03/2014, 21:20

... and the DNA was purified on a 12% acrylamide gel About 50–100 ng of DNA was used for the next cycle of the SELEX procedure Cloning of the products of selection DNA amplified from the last cycle of ... measuring the affinity of the factors for a series of oligonucleotides containing an increasing number of the binding motif Immediately following the addition of the different oligonucleotides, the ... number of consensus trimers In the case of the purified embryonic HSF2, the ratio rep6/rep3 reaches the plateau very quickly (15–20 min) (Fig 4B) In contrast, in the case of the i.v.s HSF2, the ratio...

Ngày tải lên: 24/03/2014, 00:21

... assigned to the anomeric proton A-1 of the arabinofuranose unit on the basis of its correlations with the carbon signals at 110.7 p.p.m [12], in addition, the low field chemical shift of the A-3 carbon ... configuration, together with their substitution pattern, mask the O-chain moiety to the action of plant pectolytic enzymes, saving the adsorption properties of the bacterial cell wall Furthermore, the occurrence ... hydrolyse the Kdo linkage without effecting the acid-labile furanosidic unit Combining the information from the analysis of the COSY and NOESY spectra (Fig 3) and HSQC, the complete assignment of the...

Ngày tải lên: 24/03/2014, 04:21

... roles of the cation include the activation of water for the hydration reaction and ⁄ or the stabilization of the anion transition state In the latter case, if the substrate coordination to the ... methyl functional groups at the 5-position Together, these results provide insight regarding the mechanism, the substrate binding site and the role of the metal cofactor in the enzyme Results Cloning, ... ± 0.3 The influence of the two metal ions on the kinetic parameters for HPDA hydration by BphH is shown in Table The Km values were similar with either metal cofactor On the other hand, the kcat...

Ngày tải lên: 30/03/2014, 15:20

... Boundary Conditions of Load-Carrying Cruciform Welded Joint Figure (3) shows the results of mesh sizes density It was noticed that there are no effects on the stability of results and the very close ... very close agreements between the three types of mesh sizes indicate that these effects on the SIF are negligible Effect of Mesh Size on SIF, KI To investigate the convergence in results, finite ... under the applied load Figure (4) shows the results of a crack increment step (Δa) It was noticed that there are no effects on the stability of results and the very close agreements between the...

Ngày tải lên: 24/05/2014, 20:40

... yield of 92% pure curcumin was obtained with no BDMC detected Further purification of the crystals was possible by CC 3.2.2 CC separation of pigments from the mother liquor The composition of the ... 1039–1044 of the lack of separation of mixtures of pigments However, the fractions that contained a mixture of the pigments were concentrated and rechromatographed 3.3 Purity of curcuminoid pigments The ... al., 2002) A variety of methods have been reported for the quantification of curcuminoid pigments Most of them are spectrophotometric, expressing the total color content of the sample (ASTA, 1985)...

Ngày tải lên: 01/07/2014, 13:23

... cases Determination of the percentage of PF resin hardening The aim of studying the character of PF resins in the field of UV spectrum was to determine the amount of the insoluble proportion of ... possibilities of the full utilization of its advantages Dimensions of the wood raw material are given by the size of the stem and it is not possible to manufacture the material of larger areas ... increase, the amount of evaporated water and heat losses will decrease, and thus the temperature in the marginal part of the set will increase The temperature of the central zone of the set at larger...

Ngày tải lên: 07/08/2014, 03:22

... composed of similarly sized primary subunits The size of the subunits of the aggregates of NM-200 is relatively constant: they measure approximately 20 nm in diameter The size of the subunits of different ... on the measurement of their VSSA from its electron tomographic reconstruction To evaluate the influence of missing wedge artifacts on the reconstruction and on the precision of the estimation of ... general close to the minimal value between both peaks of the bimodal curve (Figure 1A) of the histogram representing the number of voxels in function of their grey value In the future, computational...

Ngày tải lên: 11/08/2014, 00:23

... related to the sample size of the smallest group, we decided to select three groups of patients of similar size by matching the participants according to age and sex For each patient in the combined ... were calculated The discrimination of the model was assessed using the calculation of the area under the ROC curve (or cstatistics) The percentage of patients correctly classified by the logistic ... one in the combined surgery population with a low incidence of the composite endpoint (comparable with that of the global CABG group) We then calculated the thresholds of troponin using the ROC...

Ngày tải lên: 13/08/2014, 08:20

... Figure of loaded onto the gel Relation4 the intensities of the bands in the lanes with recombinant PFV proteins shown in Fig and amounts of protein Relation of the intensities of the bands in the ... with the MAB solutions The blot was developed with the ECLplus reagent from Amersham-Pharmacia (P), Pellet of the gradient (B) Density and infectivity of the gradient fractions shown in (A) The ... derived from the same samples shown in Fig The ability to build a regression curve from the sample detection also illustrates that the assay was linear over the protein range analyzed A total of 36...

Ngày tải lên: 13/08/2014, 09:21