... geometry of the tool, and vf – feed speed The common relation was confirmed that with the rising feed speed the cutting input also increases The reason is that with an increase in vf, the feed of the ... conclusion it is necessary to state that the issue of plain milling of beech wood is very complex and in the context of the results of the above-mentioned experiments it is inevitable to further ... simultaneously with the measurements aimed at the investigation of the influence of the above-mentioned factors on cutting input Machinery and tool Experiments were realized on a single-spindle...
Ngày tải lên: 07/08/2014, 03:22
... different environmental conditions during the mature stage (the second and the third period) Three typical environmental conditions were selected: (i) Fine & Wet (PPFDday was 35–45 mol m–2 day–1 and the ... content below 50%) Radial patterns of SFD of Fagus crenata 295 Figure Radial patterns of SFDday using Weibull function under the three different sets of environmental conditions (the same environmental ... patterns of SFDday using Weibull function with different environmental condition We continued our analysis of SFDday patterns in the same trees by selecting very different environmental conditions...
Ngày tải lên: 08/08/2014, 00:21
Influence of Phosphorus Concentration on the Biodegradation of Dissolved Organic Matter in Lake Biwa, Japan
... that of DP, the addition of the filtered secondary effluent did not affect the dependency of oxygen consumption on DP very much (2) The response-curve of the oxygen consumption on DP was expressed ... for the accumulation of CODMn in Lake Biwa is the deterioration of bioactivity for DOM degradation Accordingly, the influence of phosphorus concentration on the biodegradation of DOM was discussed ... contamination Evaluation of oxygen consumption Oxygen consumption for 5-day incubation (OCobs) was calculated as the difference between DO before and after incubation Then, oxygen consumption by the...
Ngày tải lên: 05/09/2013, 10:17
THE INFLUENCE OF HUMAN ACTIVIES ON THE ENVIRONMENT
... stations produces carbon dioxide, sulphur dioxide and other greenhouse gases • carbon dioxide traps heat in the atmosphere and causes the temperature of the earth to rise • This leads to disruption ... growing population This causes several problems Burning the timber increases the level of carbon dioxide in the air Less trees means less carbon dioxide absorbed for photosynthesis Soil is eroded ... rivers and pollute the water • They may even end up in the food chain In the 1960s, DDT in the food chain threatened bird populations Many birds of prey came close to extinction What can we Do?...
Ngày tải lên: 28/09/2013, 11:10
Tài liệu The Influence of Human Activity on the Environment ppt
... stations produces carbon dioxide, sulphur dioxide and other greenhouse gases • carbon dioxide traps heat in the atmosphere and causes the temperature of the earth to rise • This leads to disruption ... growing population This causes several problems Burning the timber increases the level of carbon dioxide in the air Less trees means less carbon dioxide absorbed for photosynthesis Soil is eroded ... rivers and pollute the water • They may even end up in the food chain In the 1960s, DDT in the food chain threatened bird populations Many birds of prey came close to extinction What can we Do?...
Ngày tải lên: 26/01/2014, 10:20
Báo cáo " Influence of cooling rate on the properties of Fe73.5Si13.5B9Nb3Au1 ribbons " docx
... wheel, the longer path The increasing speed of the wheel make the thickness of ribbons thinner and the ratio between the area and volume of the ribbons that contact with the surface of the wheel ... that the wheel gets heat faster and more than from inside of the ribbon, so the ribbon is cooled faster Therefore, the speed of the wheel is proportional to the cooling rate It means that two concepts ... corresponds to the crystallization of α-Fe(Si) phase and the second one is related to the forming of boride phase (Fig 2) When increasing cooling rate, the first peak (Tp1) and the second one (Tp2)...
Ngày tải lên: 05/03/2014, 14:20
Báo cáo " Assessment of the influence of interpolation techniques on the accuracy of digital elevation model " potx
... high accuracy of DEM The influence of interpolation technique on the DEM accuracy depends on the type of topography, and the distribution of sample points, what is directly related to the surveying ... point of interest to the sample point i ; and the power p controls the significance of sample points to the interpolated values, based on their distance to the output point The higher the power, the ... higher the weight, the smoother the output surface For the tension spline, the higher the weight, the coarser the output surface More detailed information about the spline interpolation can be...
Ngày tải lên: 05/03/2014, 16:20
Báo cáo " Influence of laser parameters on the stationary operation of a two-mode random micro laser " pdf
... its influence on two modes almost is inverse The increase of photon intensity of one mode makes the decrease of the one of other mode The reason perhaps is due to the conservation of energy in the ... 139-142 Discussion and conclusion In the stationary operation of two-mode random microlaser, the variation of laser parameters influences clearly on the transformation of mode photon densities With ... coefficients θ12 and θ21 on the photon densities is inverse (see Fig 3a, 3b) This shows that in the process of interation between the fields of two modes, the increase of photon density of one mode always...
Ngày tải lên: 14/03/2014, 13:20
Báo cáo hóa học: " Applying the scientific method when assessing the influence of migratory birds on the dispersal of H5N1 Paul L Flint" doc
... both of these examples, while the original statements may be strictly true, the conclusions drawn from them are not necessarily valid or informative Conclusion As the debate regarding the role of ... throughout the debate on the respective roles of migratory and domestic birds in the dispersal of H5N1, there are numerous statements that are not based on data presented, or when they are based on data, ... critical test of either of these hypotheses we are left with considering which of these type I errors is most severe or unacceptable Since the primary interest in H5N1 is relative to the potential...
Ngày tải lên: 20/06/2014, 01:20
Báo cáo hóa học: " The influence of colloidal parameters on the specific power absorption of PAA-coated magnetite nanoparticles" potx
... depending on the magnetic 4π R3 volume of the NP, VM = and Kan is the magnetic anisotropy energy constant of the magnetic core of the NP Therefore, the heat dissipation of a magnetic hyperthermia ... interaction will become relevant and contribute to the magnetic properties of the ferrofluid Since some controversies exists in theoretical studies about the influence of the dipolar interaction on the ... dispersions at different magnetite concentrations, ranging from 0.6 to 20 g L-1 Figure shows the evolution of the SAR with magnetite concentration The evolution of the SAR coefficient reveals that the...
Ngày tải lên: 21/06/2014, 03:20
Báo cáo hóa học: " Influence of surface properties on the electrical conductivity of silicon nanomembranes" pot
... the condition of the surface produced by H termination The simplest situation for the H-terminated surface would be complete passivation of surface states by H (including the “poisoning” of the ... bands produced by the × reconstruction) [2,3] If one adopts this model, then the evolution of sheet resistance plots the re-oxidation rate, and differences in re-oxidation rates of the NMs can be ... inferred from the change of sheet resistance There will then be a crossover point at h where the degrees of oxidation of the two surface terminations switch The VH termination appears then to be...
Ngày tải lên: 21/06/2014, 03:20
Influence of charge mode on the capacity and cycle life of lead±acid battery negative plates ppsx
... by the rate of dissolution of PbSO4 crystals The charge ef®ciency will depend on the rate of H2SO4 diffusion out of the NAM pores The diffusion of H2SO4 towards the bulk solution depends on the ... 3.8 Influence of the j2 potential on the capacity and cycle life of the negative plate The in¯uence of the potential, j2 during the second charge step on the cycle life and the capacity of the ... found in the inner layers of the plate The occurrence of this residual sulphation of the inner layers of the negative plate can be explained on the basis of the mechanism of PbSO4 reduction to Pb...
Ngày tải lên: 05/07/2014, 21:20
Báo cáo nghiên cứu khoa học: "INFLUENCE OF PARAFIN CONCENTRATION ON THE SEDIMENTATION OF DISPERSED PARTICLES IN THE PETROLEUM MEDIA" pdf
... calculating the influence of parafin concentration to the sedimentation of particles are same to the one were shown in [1] The coefficient of the parafin amount in the Richardson & Zaki equation is ... but the Stokes equation is replaced by the Richardson & Zakis correlation 2.3 Influence of parafin concentration on the sedimentation of dispersed particles in the petroleum media Methods of calculating ... to the estimation of sedimentation of the particle in petroleum containing parafin, which is typical to the crude oil of the White Tiger Well However it is also necessary to study further on the...
Ngày tải lên: 22/07/2014, 02:20
Báo cáo lâm nghiệp: "Effect of climatic factors on the dynamics of radial increments of Norway spruce, European beech and sessile oak" potx
... effect of precipitation even on the height growth of trees He did not confirm the effect of precipitation even in the combination with increased content of atmospheric nitrogen The aim of our ... species The method of multiple correlations was used for the derivation of the models of dependence of increment indexes on selected climatic factors together for all trees in each stand and together ... (%) Based on the values of model parameters in Tables 2–4 we can evaluate and quantify also the intensity of the effect of significant climatic factors on the increment of trees of the studied...
Ngày tải lên: 07/08/2014, 10:21
Báo cáo lâm nghiệp: "Influence of marine salts on the localization and accumulation of surfactant in the needles of Pinus halepensis Mill" ppsx
... that the transport of the solutes through the cuticle consists of a series of consecutive steps: i) sorption to the surface of leaves, ii) diffusion into surface waxes, iii) diffusion across the ... sorption on the epicuticular cuticular waxes, or the lack of LABS source/sink relationships (metabolization, translocation away from the epidermis) which allow the accumulation of chemicals in the ... observations of needle surface of these treated plants showed an alteration of the crystalloid aspect of the epicuticular waxes Microtubules appeared to be only identically broken on all the surface of...
Ngày tải lên: 08/08/2014, 18:21
Báo cáo lâm nghiệp: "Influence of light conditions on the predetermination of foliar characteristics in Betula alleghaniensis Britton" ppsx
... Chlorophyll content chlorophyll content of early leaves also influenced by the light conditions of year n (Fig 1For the st harvest of early leaves, the highest values, especially when expressed on the ... leaves, the influence of light conditions of the previous year was not observed (Table II) Leaf anatomy Table III summarizes data on anatomical features The method we used allowed comparison of the ... demonstrate that, as the season progressed, the e;arly leaves were more and more influenced by the light conditions in their new environment Similarly, late leaves seemed to be influenced only...
Ngày tải lên: 09/08/2014, 04:20
Báo cáo y học: " The influence of oxygen tension on the structure and function of isolated liver sinusoidal endothelial cells" potx
... seeded on fibronectin-coated dishes than on collagencoated ones This shows that the key factors which enable the maintenance of the LSEC fenestrae in the intact liver are lost upon cultivation, ... expression on cultured LSECs ICAM expression on cultured LSECs Quantitative measurements of ICAM-1 expressed on the surface of LSEC were done by flow cytometry after incubation of LSECs on normoxic ... reagent Authors' contributions IM and BS conceived of the study IM carried out most of the experimental work and the writing AW and DGL participated in the determination of fenestration parameters,...
Ngày tải lên: 13/08/2014, 13:20
goodwin and seow - 2002 -the influence of cg mechanisms on the quality of financial reporting and auditing in singapore
... by the internal audit division of the same audit firm while in the other condition, they were told that another international audit firm provided these services The final manipulation concerned the ... receive any one of the eight versions in the first experimental case together with any one of the eight versions in the second experimental case This resulted in 64 different versions of the instrument ... received the attention not only of the profession but also regulators and stock exchanges around the world Levitt’s (1998 and 2000a) criticisms of the failure of the auditing profession in the US...
Ngày tải lên: 06/01/2015, 19:49
Influence of silicon nanostructures on the growth of gan on silicon
... sub is the total lattice mismatch strain, is the height of the substrate, is the thickness of the epitaxial is the radius of the growth area, Young's modulus of the substrate and is the is the Poisson ... attained on silicon carbide (SiC), sapphire and, more recently, silicon Silicon carbide crystals are comprised of covalently bonded silicon and carbon atoms, of which their unit cell consists of one ... top of the rods, and subsequently coalesced to form a continuous epilayer of thickness Hence, the rigid contact between the epilayer and the substrate is confined to the top of the rods The...
Ngày tải lên: 10/09/2015, 09:13
INFLUENCE OF LASER RADIATION ON THE ABSORPTION OF a WEAK ELECTROMAGNETIC WAVE BY CONFINED ELECTRONS IN DOPED SUPERLATTICES
... vector of the electron (phonon), a+ n,p⊥ and an,p⊥ (bq and bq ) are the creation and the annihilation operators of electron (phonon), respectively q = (q⊥ , qz ), A(t) is the vector potential of ... is the energy of an optical phonon, Cq is a constant in the case of electron - optical phonon interaction [17]: Cq = 2πe2 ω0 V ε0 q 1 − χ∞ χ0 (2) Here, V , e, ε0 are the normalization volume, the ... confined along the z direction in a DSL, we only consider the in - plane (x,y) current density vector of electrons j⊥ (t) The AC of a weak EMW by confined electrons in the DSL takes the simple...
Ngày tải lên: 30/10/2015, 20:52