... levels 12 LIGHT AND BLACKBODY EMISSION in the form of visible light The largest portion of the electrical energy injected into the system appears as heat and infrared light Various forms of light ... interesting are bands of light and dark that appear in the tube, as evident in Figure 2.6.3 At an accelerating voltage of about 40 V, two bands of light appear as evident in part (a), and when the ... which govern the operation of other light sources, such as lasers 1.1 EMISSION OF THERMAL LIGHT We have all undoubtedly encountered thermal light in the form of emission of light from a red-hot object...
Ngày tải lên: 17/03/2014, 14:28
... photosynthesis -light curve (by unit leaf area of the tree) compared with the outputs of the model for a single tree and for two light conditions The light saturation was at 600 pE-m and the maximum ... balance of the stand, computed as the difference between net assimilation (predicted) and (growth and maintenance) shoot respiration (measured and fitted to temperature) The allocation of carbon ... and Welles, 1983) Diffuse light was treated as direct light and integrated over the whole sky Thus the model enabled calculation of shadowing between trees As the...
Ngày tải lên: 09/08/2014, 04:20
Báo cáo khoa học: "Application of light microscopical and ultrastructural immunohistochemistry in the study of goblet cell carcinoid in the appendix" pdf
... interpretation of data, follow up of the patient and to drafting of the manuscript YY, PH and DKP have contributed to acquisition of clinical and pathological data, follow up of the patient and interpretation ... nature of goblet cell carcinoids, the location of hormones and the phenotype of endocrine cells Another useful method for simultaneous revealing of mucin secretion and endocrine cell component of ... resection of the right colon was based on histological data of submucosal infiltration of the appendiceal wall, upon the finding of mitoses and nuclear atypism [16] The histological appearance of the...
Ngày tải lên: 09/08/2014, 07:21
Báo cáo khoa học: Photosynthetic acclimation: Structural reorganisation of light harvesting antenna – role of redox-dependent phosphorylation of major and minor chlorophyll a/b binding proteins pot
... absorption at 680 nm (blue–green light) and 700 nm (red and far-red light) , respectively State is induced by excess PSI light (light 1) and State by excess PSII light (light 2) State 1-to-State transition ... photosynthesis, PSII and PSI must be excitonically balanced Overexcitation of photosystems occurs in high light intensity, which often results in the photoinhibition of PSII and a rapid turnover of the reaction ... NADPH2 and ATP are used for fixation and reduction of CO2 into carbohydrates State is induced by excess PSI light (light 1) and State by excess PSII light (light 2) State 1-to-State transition...
Ngày tải lên: 16/03/2014, 06:20
Báo cáo Y học: Supermolecular organization of photosystem II and its associated light-harvesting antenna in Arabidopsis thaliana docx
... site of the tentative CP24 subunit, the Fig Comparison of positions of M-type trimers in various types of Arabidopis and spinach PSII–LHCII supercomplexes (A) Contoured version of the image of ... site of strongest difference (D) Image form (A) with contours; positions of S-type and M-type LHCII trimers indicated in yellow and positions of CP29, CP26 and CP24 indicated in green (E) Image of ... membranes If analysis of crystalline arrays of paired membranes was focussed on the superposition of both layers, it became clear that the interaction of the rows of PSII complexes of adjacent layers...
Ngày tải lên: 24/03/2014, 04:21
barkana, loeb. the first sources of light and the reionization of the universe
... energy content of the universe and the values of the other cosmological parameters We illustrate the abundance of halos for our standard choice of the CDM model with m = 0:3 (see the end of Section ... between 1047 and 1048 H I and He I ionizing photons=s/solar mass of stars, where the lower value applies to stars of ∼20M and the upper value applies to stars of ¿100M (see Tumlinson and Shull, ... mass of order the Jeans mass (∼104 M ), below which gas pressure opposed gravity and prevented collapse (Couchman and Rees, 1986; Haiman and Loeb, 1997; Ostriker and Gnedin, 1996) In variants of...
Ngày tải lên: 24/04/2014, 17:06
towards a just monetary system a discussion of money, banking and monetary policy in the light of islamic teachings
Ngày tải lên: 31/05/2014, 01:31
the principles of light and color by edwin d babbitt (1878)
... blue-green gray, light blue-gray, light blue-purple or violet-gray, light purple-gray, light red-purple gray, light red-gray, light red, orange gray, light orange-gray, and light yellow-orange gray, ... composed of normal gray and red YELLOW GRAY, or CITRINE, of normal gray and yellow BLUE GRAY, or OLIVE, of normal gray and blue XXII.—A TRIAD OF SECONDARY GRAYS ORANGE GRAY, composed of normal gray and ... white; is a light normal gray; is the circle of light chromatic grays, such as ÆTHE ORCE RF 66 HARMONIC LAWS OF THE UNIVERSE light yellow-gray, light yellow-green-gray, light green-gray, light blue-green...
Ngày tải lên: 04/06/2014, 12:35
a history of light and colour measurement, science in the shadows - johnston
... meet the demand for street lighting and production by the new industries Manufacture often now continued beyond the hours of daylight Particularly in France, the study of light and lighting came ... accommodation, and depends on background lighting, the rate of change of intensity, and the characteristics of the observer One attempt to obviate the effect of eye 23 A History of Light and Colour ... and use of such systems by artists, brewers, dye manufacturers and horticulturalists is evidence both of the creation of a strong practical need for metrics of light and colour measurement, and...
Ngày tải lên: 05/06/2014, 11:28
Báo cáo hóa học: " Research Article A Practical Approach for Simultaneous Estimation of Light Source Position, Scene Structure, and Blind Restoration Using Photometric Observations" pot
... on each of the critical points of the critical boundary (5) The point of intersection of these tangents gives x and y coordinates of the light source position The rough estimates of the light source ... intensity values of the mth image of size M × N arranged in lexicographical order Em is a function of ρ, p, q, and sm which are the true values of the surface gradients, albedo, and the light source ... and ManjunathV Joshi Figure shows the position of the camera, the object, and the light source with respect to the coordinate system Both the camera and the light source are placed in front of...
Ngày tải lên: 21/06/2014, 22:20
The Society of Light and LightingThe SLL Lighting Handbook.The SLL Lighting Handbook222 Balham pptx
... own professional judgement when deciding whether to abide by or depart from it © February 2009 The Society of Light and Lighting The Society of Light and Lighting The Society of Light and Lighting ... Society of Light and Lighting, the authors and others involved in their publication from any and all liability arising out of or in connection with such use as aforesaid and irrespective of any ... centenary of the formation of the Illuminating Engineering Society, the progenitor of the Society of Light and Lighting This handbook has been written to celebrate this anniversary and to fill...
Ngày tải lên: 28/06/2014, 22:20
the electromagnetic origin of quantum theory and light
... The speed of light is independent of the speed of the object on which it is measured, independently of the speed of other objects 1.2 Space and Time Dependence upon Speed Let a pulse of light be ... Origin of Quantum Theory and Light and his equipment, which determines the speed of light passing him to be vA Since there is nothing else in the universe, a question about the speed of the ... non-radiating array of charge and current densities Such arrays are inherently stable and interaction between the intrinsic and orbital magnetic moments produces a continuous torque and assures continuous...
Ngày tải lên: 06/07/2014, 15:31
the electromagnetic origin of quantum theory and light
... The speed of light is independent of the speed of the object on which it is measured, independently of the speed of other objects 1.2 Space and Time Dependence upon Speed Let a pulse of light be ... Origin of Quantum Theory and Light and his equipment, which determines the speed of light passing him to be vA Since there is nothing else in the universe, a question about the speed of the ... non-radiating array of charge and current densities Such arrays are inherently stable and interaction between the intrinsic and orbital magnetic moments produces a continuous torque and assures continuous...
Ngày tải lên: 06/07/2014, 15:34
Báo cáo lâm nghiệp: "Botanical determinants of foliage clumping and light interception in two-year-old coppice poplar canopies: assessment from 3-D plant mock-ups" ppsx
... Botanical determinants of foliage clumpiness and light harvesting Studies linking botanical parameters to spatial distribution of leaf area and/ or light interception at branch and/ or canopy levels ... and shoot dry mass (DMA1+A2 , g) and (below) petiole length (lP , m) and petiole dry mass (DMP , g) for poplar clones Ghoy (Gho, ) and Trichobel (Tri, •) Relationships between DM and d2 lA1 and ... shoot height (lA1) and mean plant parameters (see Tab I for list of abbreviations and their definitions) were obtained from a population of 15 (mes.) and 36 (sim.) plants per clone and per date Date...
Ngày tải lên: 07/08/2014, 16:21
Báo cáo khoa học: "Gamma-ray irradiation stimulates the expression of caveolin-1 and GFAP in rat spinal cord: a study of immunoblot and immunohistochemistry" pot
... retfA Co59 ta nim 01 rof )0.6 Hp( etartic muidos L/lomm 01 ni deliob erew gniniatsonummi 1-niloevac-itna rof snoitces niffarap emoS esadixorep suonegodne kcolb ot nim 02 rof retaw dezinoied ni ... semit eerht dehsaw erew stolb ehT h rof ,)000,02 : 1( PAFG-itna dna )0001 : 1( 1-niloevac-itna gnidulcni ,ydobitna yramirp hcae htiw detabucni neht dna h rof )lCaN Mm 051 dna ]4.7 Hp[ lCH-sirT ... dedaol saw nietorp fo gµ 02 gniniatnoc tnatanrepus ,yassa tolbonummi eht roF detsevrah neht saw tnatanrepus eht ;nim 02 rof mpr 000,21 ta degufirtnec dna sebutorcim otni derrefsnart erew setanegomoh...
Ngày tải lên: 07/08/2014, 18:21
Báo cáo lâm nghiệp: "Influence of light and competition on crown and shoot morphological parameters of Norway spruce and silver fir saplings" doc
... pattern of natural regeneration [15] lead to a high spatial variability of light in the understory and of competition between saplings An example of the difficulty to understand the effects of subtle ... [10] The objectives of the present study are: (i) to assess the effects of light and competition on growth and on morphological parameters of Norway spruce (Picea abies Karst.) and silver fir (Abies ... Vaccinium spp and Brachipodium pinnatum The effects of light level and competition on growth and on crown and shoot morphological parameters were assessed for 76 saplings (48 Norway spruce and 28 silver...
Ngày tải lên: 08/08/2014, 00:21
Báo cáo lâm nghiệp: "Reconstructing crown shape from stem diameter and tree position to supply light models. I. Algorithms and comparison of light simulations" doc
... of Plots and to 2.22 and 0.67 ha, respectively, and the second buffer area brings the surface area of Plots and to 3.58 and 1.44 ha, respectively 2.2 Light measurements Two kinds of light measurements ... made: – Light estimation from hemispherical photographs to calibrate the tRAYci light model – Light sensor measurements to evaluate the light simulations obtained with the tRAYci model 2.2.1 Light ... measured a total of 975 stems and for 816 of these stems (study areas and first buffers), we measured a total of 359 crowns (Fig 2b) 2.3.3 Simulation plot used for light simulations TRAYci was used...
Ngày tải lên: 08/08/2014, 00:22
Báo cáo lâm nghiệp: "Effects of light intensity on the growth and energy balance of photosystem II electron transport in Quercus alba " potx
... range of light intensities (5, 15, 30, and 100% of full sunlight) Specifically, we examined (1) how growth dynamics and biomass allocation change with light levels and (2) to what extent light ... analysis of variance was used to quantify the effect of light level on RCD and HT and changes in RCD and HT over the experimental period Due to significant interactions between light treatment and ... 30 and 100% of full sunlight, Because seedlings assigned to each light environment were similar in HT and RCD (Figs and 2), biomass of these seedlings must have been similar at the start of the...
Ngày tải lên: 08/08/2014, 00:22
Báo cáo lâm nghiệp: "Light acclimation and photosynthetic response of beech (Fagus sylvatica L.) saplings under artificial shading or natural Mediterranean conditions" docx
... full range of irradiance conditions (A Porté, personal communication): between and 15% of full sunlight, between 15 and 30%, between 30 and 45%, between 45 and 60%, between 60 and 75%, and at about ... north-eastern France (plots and linear regression) and southern France (mean, standard deviation and confidence interval of the mean), and for the saplings of natural regeneration (plots and linear regression) ... (plots and linear regression) and southern France (mean, standard deviation and confidence interval of the mean), and for the saplings of natural regeneration (plots and linear regression) at different...
Ngày tải lên: 08/08/2014, 00:22