... This is the concept of survival of the fittest and natural selection described by Charles Darwin in On the Origin of Species by Means of Natural Selection (1859) Over a period of time and many generations, ... finite sample of data points by taking a random sample of values of the independent variable appearing in the given expression We then pair each value of the independent variable with the result of ... a finite sample of data points by taking a random sample of values of the given mathematical expression in a specified interval of the independent variable We then pair each value of the independent...
Ngày tải lên: 08/04/2014, 12:45
... of barriers—Affinity of the productions of the same continent— Centres of creation Means of dispersal, by changes of climate and of the level of the land, and by occasional means Dispersal during ... (1st Thousand) ON THE ORIGIN OF SPECIES BY MEANS OF NATURAL SELECTION, OR THE PRESERVATION OF FAVOURED RACES IN THE STRUGGLE FOR LIFE By CHARLES DARWIN, M.A., FELLOW OF THE ROYAL, GEOLOGICAL, LINNEAN, ... differences—Causes of the sterility of first crosses and of hybrids—Parallelism between the effects of changed conditions of life and crossing —Fertility of varieties when crossed and of their mongrel offspring...
Ngày tải lên: 28/06/2014, 19:20
Biogeochemical Variability of Vietnamese Coastal Waters Influenced by Natural and Anthropogenic Processes
... The water balance of Vietnam given in Table shows that about 50% of the rainfall is removed as surface and Biogeochemical Variability of Vietnamese Coastal Waters Influenced by Natural and Anthropogenic ... north Socioeconomic Setting About 25.4% of the population of Vietnam is urban and the rest rural Because of the rather slow rate of urbanization, the growth of urban population has not been significant ... southern part of Nha Trang Bay were covered by 0.52 g of sediment cm-2 with an estimated annual sedimentation rate of about 1.0– 1.7 cm year-1 This appeared to have led to the destruction of the reefs...
Ngày tải lên: 27/10/2013, 14:15
Báo cáo khoa học: Regulation of the muscle-specific AMP-activated protein kinase a2b2c3 complexes by AMP and implications of the mutations in the c3-subunit for the AMP dependence of the enzyme docx
... a2-AMPK signaling [49] Initially, AMP was thought to increase phosphorylation of AMPK by AMPKK both by direct activation of the upstream kinase and by making the AMPK a better substrate for AMPKK, ... presence of AMP (0, 50, 200 or 500 lM AMP) Table Effect of the mutations in the AMPK c3 gene on the AMP dependence of the enzyme Fold stimulation reflects the activation of the corresponding AMPK ... traces of AMP, either endogenous or as a Regulation of AMPK a2b2c3 complexes by AMP A B C result of the presence of AMP- generating proteins as contaminants [47] Several upstream kinases (AMPKKs)...
Ngày tải lên: 30/03/2014, 08:20
báo cáo hóa học: " Recovery of visual fields in brain-lesioned patients by reaction perimetry treatment" potx
... the degree of change demonstrated by static and by dynamic perimetry when the data of all patients were pooled into one group Stability of VF increase after the end of treatment In 15 of 20 patients, ... size which is given a detection rate of 100%, an increase of the detection rate of 18.6 % indicates an increase of usable VF area by 18.6 %, nearly onefifth of a normal VF In only two patients ... computer uses a special software permitting a) assessment of the VF size by random presentation of stimuli, and b) treatment by sequential and repetitive stimulation of LEDs in order to focus...
Ngày tải lên: 19/06/2014, 10:20
Báo cáo lâm nghiệp: "Opportunistic methods of controlling vegetation, inspired by natural plant succession dynamics with special reference to natural outmixing tendencies in a gap regeneration" pps
... different rates of advancement Forest ecosystems remain one of the last refuges of terrestrial naturalness Another constraint – this time ethical – is to respect the basic conditions of naturalness, ... course, i.e imitating the natural processes of plant succession instead of composition types Opportunistic silviculture makes use of natural plant dynamics In the long term, natural development produces ... the natural process of socialisation as a consequence of interspecific competition [24] This paper outlines some solutions to both questions and presents some initial results STRATEGIES OF NATURAL...
Ngày tải lên: 08/08/2014, 01:22
Báo cáo y học: "Inhibition by Natural Dietary Substances of Gastrointestinal Absorption of Starch and Sucrose in Rats and Pigs: 1. Acute Studies" pot
... doubling of the initial dose caused further lowering of the absorption of rice starch compared to the standard dose after one and two hours as estimated by the Int J Med Sci 2007, appearance of circulating ... combination of the two CHO For example, 30 minutes after the starch challenge, the blood glucose increased above baseline by an average of approximately 25 mg/dl in the pigs in the absence of the ... influence the appearance of circulating glucose after sucrose challenge L-Arabinose slowed the absorption of sucrose, but not that of rice starch The inability of any of these agents to influence...
Ngày tải lên: 08/08/2014, 16:23
Báo cáo y học: "Inhibition by Natural Dietary Substances of Gastrointestinal Absorption of Starch and Sucrose in Rats 2. Subchronic Studies" pptx
... and BW were examined by 2-way analyses of variance (one factor being group and the second factor being time of examination) Where a significant effect of regimen was detected by repeated measures ... acutely with two grams of rice starch One-half hour prior to the CHO challenges and at the time of challenges a total of four ml of water was given to control, or two gram of formulation in four ... in a similar volume of water (test) (Fig 1) The test group gained 46.5 g + 97.7 (SEM)(10.4%) and the control group gained 68.3g + 11.0 (SEM)(14.9%) of body weight by the end of the nine weeks The...
Ngày tải lên: 08/08/2014, 16:23
Reductive dehalogenation of cholorinated hydrocarbons by established cocultures
... chloroform and TCE, with initial chloroform of 18 µmole/bottle 71 Figure 21 One-step inoculation of 2-coculture PR_GEO12’s dechloration of chloroform and TCE, with initial chloroform of ... inoculation of 2-coculture PR_GEO12’s dechloration of chloroform and TCE, with initial chloroform of 50 µmole/bottle 70 Figure 20 One-step inoculation of 2-coculture PR_GEO12’s dechloration of ... inoculation of 3-coculture PGS dechloration of chloroform and PCE, with initial chloroform being 10.2 µmole/bottle 79 Figure 28 One-step inoculation of 3-coculture PGS dechloration of chloroform...
Ngày tải lên: 30/09/2015, 10:11
Recovery of antibiotic resistance genes in natural environments
... 100µg.ml-1 Amp and if it is necessary, an appropriate antibiotic was added Sampling and samples storage: Each time, litters of canal bottom water containing top-layer of sediment samples was ... MICs of tetracycline: Tetracycline concentration (µg/ml) Growth of DH5α/pUC19 10 30 + + - (+) : growth,(-): no growth MIC value of chloramphenicol is 6µg/ml, of streptomycin is 50µg/ml, of gentamicin ... clones were verified by growth in both types of plates and in construct with the negative control of E.coli DH5/ pUC19 that can only grow in LB -Amp Results: MIC values of E.coli DH5α/pUC19 The...
Ngày tải lên: 28/05/2016, 14:41
Recovery of rare earth elements from permanent magnet scraps by pyrometallurgical process
... the increasing of treating temperature It means B2O3 can be reduced to metal phase by carbon in the experimental temperatures The content of boron oxide in oxide phase Recovery of rare earth elements ... 3.67 3.30 2.98 1.96 Recovery of rare earth elements from permanent magnet scraps by pyrometallurgical process Figures Fig.1 Illustration of experimental process for recovery of the rare earth elements ... potentials of oxygen in different reactions 1400 1600 1800 Recovery of rare earth elements from permanent magnet scraps by pyrometallurgical process Fig.5 Photograph of a the oxides of NdFeB,...
Ngày tải lên: 28/06/2016, 11:29
The Countess of Escarbagnas by Moliere
... inherent to it a certain touch of absurdity which is catching, and we should be warned by the example of some of our friends JU Nonsense, Cléante; I see that, in spite of all you say, you are longing ... deprive us of the possibility of seeing each other anywhere else, and that neither my brothers nor my father are likely to approve of our engagement VISC Yes; but why not profit better by the opportunity ... that Hotel of Lyons, that Hotel of Holland, what charming places to live in![Footnote: Instead of naming the hotels (= mansions) of the great noblemen, Julia names the hotels (= inns) of the time...
Ngày tải lên: 06/11/2012, 14:13
PHÂN TÍCH DAO ĐỘNG HỆ TRỤC CHÍNH TÀU THỦY BẰNG PHƯƠNG PHÁP PHẦN TỬ HỮU HẠN * VIBRATION ANALYSIS OF PROPULSION SYSTEM OF SHIP BY FINITE ELEMENT METHOD
... William T.Thomson: Theory of Vibration with Applications, Prentice Hall, 1982 M Géradin/D.Rixen: Mechanical Vibrations, Wiley, 1994 C.T.Sun, Y.P.LU: Vibration Damping of Structural Elements, Prentice ... Fundamentals of Mechanical Vibration, NJ, 2001 J S Carlton: Marine Propellers and Propulsion System, Bulterworth Heineman, 1998 Loyd's Register: "Rules and Regulations for The Classification of Ships",...
Ngày tải lên: 09/04/2013, 12:58
Reduction of nitrate by nanoscale zero-valent iron supported on mesoporous silica beads
... regression of the first order kinetic equation This graph is noticed by higher kobs of 0.1619 h-1 in the initial stage of the reaction followed by lower kobs of 0.0122 h-1 The decrease in the value of ... with functional groups for the removal of ammonium which is a possible byproduct of denitrification by ZVI CTAB was dissolved in deionized water The mixture of 3-mercaptopropyltrimethoxy silica ... a faster rate g of the beads in 100 mL of solution with initial nitrate concentration of 30 mg-N/L removed 20 % of the nitrate after h, and stayed at that point during the rest of the reaction...
Ngày tải lên: 05/09/2013, 09:38
Polystyrene (PS) waste plastic conversion into aviation /kerosene category of fuel by using fractional column distillation process
... Journal of Energy and Environment (IJEE), Volume 3, Issue 6, 2012, pp.871-880 polyethylene and most of them is in the form of containers and packaging materials The extent of conversion of plastics ... production of monomers, mainly ethylene, propene and butene from waste plastics In case of cracking processes, their main products are fuels fractions, gaseous hydrocarbons and liquid mixtures of hydrocarbons ... An interesting method of polymers utilization is cracking, similar to the visbreaking of vacuum residue [8] or catalytic cracking of vacuum gas oil (VGO) in the presence of various zeolites containing...
Ngày tải lên: 05/09/2013, 15:28
Tài liệu The 12 Gifts of Christmas - By Dr. Michael Norwood pdf
... the attractions of the latest toy … the noise of the loudest hawker … the charms of the most alluring seduction? Can it not be that an occasional closing of our eyes and quieting of our minds can ... mean only of our possessions It includes the free sharing of our smiles, our laughter, our words of comfort and our gestures of kindness Rather than seeking to hold and contain, The Gift of Giving ... of being open to all The Gifts of Life results in living a life of Grace This Gift manifests with the simple joy and abundance never farther away than the celebration of the person in front of...
Ngày tải lên: 15/12/2013, 06:15
Foundations of econometrics by oxford press
... would then be estimated by the mean of the weights of the individuals in the sample, that is, by the sample mean of individuals’ weights The sample mean was thus an estimate of the population mean ... which they are drawn A very natural way to estimate parameters is to replace population means by sample means This technique is called the method of moments, and it is one of the most widely-used ... specified in terms of the conditional expectations of the error terms Estimating the Simple Linear Regression Model Let us now see how the principle of replacing population means by sample means works...
Ngày tải lên: 18/12/2013, 09:13
The victorious laugh of love, frienship, justice and commonsence in the merchant of venice by shakespeare
... and goods Are by the laws of Venice confiscate unto the state of Venice" ( Act IV , Scene I ) It is clear that Shylock can not cut off the pound of flesh without spilling some of Antonio's blood ... "Renascita" or "Renaissance" means literally " Rebirth" "Renaissance" means not only " the revival of interest in the ancient culture of Greece and Rome "but also "the discovery of the world and humanbeings" ... upon - Avon was often visited by groups of travellers who was also actors 11 It is quite possible that Shakespeare watched some plays performed by some such actors and was impressed by them Shakespeare...
Ngày tải lên: 18/12/2013, 21:45
Tài liệu Development of Observe By WireSystemforForkliftsUsingHapticInterface doc
... regardless to the height of masts, vehicle’s roof as well as intensity of illumination Therefore, the drive could also reduced risk of damaging the load and the warehouse by activating the OBW mode ... operator in term of the sense of touch 2.2 Feedback force implementation: According to previous research [9], [10], the steering system of forklifts is developed Moreover, driving torque of forklift ... accuracy of performances The error is rapidly decreased from 20cm to 2cm in the case of the first subject For the second subject, the errors of two modes are quite similar However, the error of the...
Ngày tải lên: 22/12/2013, 08:16