stimulated scattering of light

... ~ l ) I n the case of the scattering of unpolarized light the cross-section in the presence of strong electron-phonon coupling would be of the same order as t h a t of the scattering in a free-electron ... dielectric constant of the medium In case of the scattering of the linearly polarized light with scattered light linearly polarized perpendicularly to the polarization of the incident light (~'~ = 0)7 ... value of the b a n d gap (4,an,a3) Together with the scattering ou t h e electrons there exists also the scat- tering of light with the emission of a phonon As the result of t h e inter- ference of

Ngày tải lên: 19/10/2022, 09:27

... ~ l ) I n the case of the scattering of unpolarized light the cross-section in the presence of strong electron-phonon coupling would be of the same order as t h a t of the scattering in a free-electron ... dielectric constant of the medium In case of the scattering of the linearly polarized light with scattered light linearly polarized perpendicularly to the polarization of the incident light (~'~ = 0)7 ... value of the b a n d gap (4,an,a3) Together with the scattering ou t h e electrons there exists also the scat- tering of light with the emission of a phonon As the result of t h e inter- ference of

Ngày tải lên: 17/03/2023, 17:10

... crystals of the point group T d, or of lowersymmetry, lead to a – mostly very small – lifting of the spin degeneracy, which is known as the Dresselhaus effect [2, 3] For most of the inelastic light scattering ... energy of the heavy and light holes, in the vicinity of the center ofthe Brillouin zone [5]: Trang 2316 2 Fundamentals of Semiconductors and Nanostructuresthe electronic bulk band structure of the ... excitations, which is in conventional backscattering geometry maximally that of the incoming laser light (≈105cm−1) The power of the method also resultsfrom the improvement of lasers and detectors in the

Ngày tải lên: 29/06/2014, 09:20

... poor light-emitting cells seemed to be useful as a control to confirm that the biosynthesis of flavins is stimulated in the cells strongly emitting light.Therefore, we measured the amount of light ... Trang 1Stimulated biosynthesis of flavins in Photobacterium phosphoreumof luminous bacteria Sabu Kasai and Takumi Sumimoto Department of Bioapplied Chemistry, Faculty of Engineering, ... with those of seven species Amino acid identity (%) in the sequences of five Rib proteins of P phosphoreum (P.p.) or V fischeri (V.f.) with respect to one of the seven species and number of amino

Ngày tải lên: 31/03/2014, 08:20

... way, or gradation of direction, gradation of light and shade, gra- dation of velocities in the shooting lights, contrasts of light and shade, contrasts of direction, of color and of size, while ... portion of a fine Gothic edifice which is a celebrated seat of learning It shows a variety of con- trasts of height, of direction, of size, of light and shadow, as well as various gradations of size ... XXIII.—TRINAL DIVISION OF TINTS AND SHADES 1st Light tints of a color in which some white is introduced, as light yellow, light, blue, light green, light gray, light green- gray, light blue-gray,

Ngày tải lên: 04/06/2014, 12:35

... handful of isolated investigations of light measurement, while devoid of aunifying impetus, nevertheless evinces three general areas of interest: the study of brightness, of radiant heat and of colour ... brightness of a light source Following the lead of one of the first writers on photometry, Pierre Bouguer, I employ two general ideas First, I use the term quantity of light to refer to the light ... concept of variations in perceived brightness Intensity is a measure of the concentration or density of light in some sense A lens can focus a given quantity of light to a more intense spot of smaller

Ngày tải lên: 05/06/2014, 11:28

... final volume of 25 μl containing 2.5 μl of 10× reaction buffer, 1.5 μl of 25 mM MgCl2, 0.5 μl of 10 mM dNTP, 0.25 μl of Taq DNA polymerase (Promega, Madi-son, WI) (5 unit/μl), 1.0 μl of each 10 ... Council of Canada, 1200 Montreal Road, Ottawa, Ontario, K1A0R6, Canada, 2 Faculty of Medicine, University of Ottawa, Ottawa, Canada, 3 Children's Hospital of Philadelphia, Department of Neurology, ... activation of HIF-1 target genes [15,16] Sev-eral HIF-1α isoforms have been found, including HIF-2α and HIF-3α, both of which have significant homologies to HIF-1α [13,14,17] Although these HIF-1 isoforms

Ngày tải lên: 19/06/2014, 22:20

... on each of the critical points of the critical boundary (5) The point of intersection of these tangents givesx and y coordinates of the light source position. The rough estimates of the light source ... plane) We now discuss briefly some of the research works that have been carried out on the estimation of position of the light source The problem of obtaining the light source position from a single ... intensity values of themth image of size M × N arranged in lexicographical order.E mis a function ofρ, p, q, ands m which are the true values of the surface gradients, albedo, and the light source

Ngày tải lên: 21/06/2014, 22:20

... This Part of BS 5950 gives recommendations for the design of light gauge profiled steel sheeting used as roofdecking, flooring and roof and wall cladding, including the design of profiled steel ... 3.1 Code of practice for design of simple and continuous composite beams sheeting This Part of BS 5950 gives recommendations for the design of light gauge profiled steelsheeting as roof decking, ... Structural use of steelwork in building Part 6 Code of practice for design of light gauge profiled steel sheeting Trang 2This British Standard, havingbeen prepared under the direction of Technical

Ngày tải lên: 08/07/2014, 22:20

... molecule Light-absorbing pigment is the secret of one of the most important machines of all, the one thatdrives the living economy of the oceans and surface of the planet While different species of ... understanding would mark the birth of a new era ofscience, one that lay at the nexus of biology and technology Trang 223 Dawn of the Digital Age of BiologyIf we are right, and of course that is not yet ... reflection of the poor state of our biological knowledge in 1995 was the fact that we had noidea of the function of 736 genes, or 43 percent, of the total in H influenzae and 152 genes, or 32percent, of

Ngày tải lên: 20/07/2014, 20:30

... forest context Percentage of above canopy light is calculated over the consid-ered period (often the whole vegetation period, when leaves have expanded) as the quantity of light at the considered ... of Plots 1 and 2 to 2.22 and 0.67 ha, respectively, and the second buffer area brings the surface area of Plots 1 and 2 to 3.58 and 1.44 ha, respectively 2.2 Light measurements Two kinds of light ... 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

Ngày tải lên: 08/08/2014, 00:22

... one of the type of level of abstraction easily dealt with by synthesis tools In RTL design a circuit is described as a set of registers and a set of transfer functions describing the flow of data ... representation of the project hierarchy and a schematic view that displays the components of the design element of the process Trang 43.1 Top Module The top module Figure 3 consists of inner modules ... Because of insufficient fund the gate_open field is "0" Trang 10Figure 9: Simulation result of the Insufficient Fund 5.3 Simulation Result of Station Traveled The simulation result of station

Ngày tải lên: 08/08/2014, 03:20

... effect of light acclimation of single leaves on whole tree growth and competition – an application of the tree growth model ALMIS Christiane Eschenbach* Ecology Center of the University of Kiel, ... biomass increase of about 30% The effects of the variation of the initial slope of the photosynthetic light curve are therefore more pronounced (+28 and Table II Sensitivity of predicted tree ... the light-photosynthesis curve; PAssim= pool of assimilates; POrigin= origin pool; PStarch= pool of starch; PStruct= pool of structural fixed carbon; R = leaf dark respiration; RAssim= changes of

Ngày tải lên: 08/08/2014, 14:22

... Original article Assessment of the spatial distribution of light transmitted below young trees in an agroforestry system S Meloni H Sinoquet 1 Cemagref, ... radiation because of the stochastic nature of the radiation field. To obtain a mean error less than 15% of the incident radi- ation, the distribution of transmitted radiation ... The aim of this paper is to assess the abil- ity of a turbid medium model to evaluate the spatial variability of the transmitted radi- ation below a young agroforestry

Ngày tải lên: 08/08/2014, 18:21

... increased presence of Tumor Necrosis Factor-alpha (TNFα), increased expression of Vascular Cell Adhesion Molecule-1 (VCAM-1), increased presence of serum monocytes and activation of the canonical ... that in the presence of Wortmannin, a biochemical inhibitor of phosphatidylinositol 3-kinase (a hallmark of insulin resistance), VCAM-1 expression was greater in the presence of TNFα plus insulin ... Additionally, nuclear import of NFκB occurred sooner in the presence of insulin and TNFα together as compared to each alone, and in the presence of Wortmannin, nuclear import of NFκB was greater than

Ngày tải lên: 11/08/2014, 03:20

... chloroform extracts of aerial material, leading to the removal of most of the well characterized metabolites, including light-dependent hypericin [17] Using bioactivity-driven fractionation of ... Reduced cell viability may be a result of induction of cell death and/or cessation of cell division Clearly at high concentrations of the chloroform extracts, loss of cell viability was evident, since ... Address: 1 Department of Microbiology, University of Iowa, Iowa City, IA 52242, USA, 2 Department of Chemistry, University of Iowa, Iowa City, IA 52242, USA, 3 Department of Microbiology, Immunology

Ngày tải lên: 12/08/2014, 04:21

... Momentum of LightRobert P Cameron BSc (Hons) Submitted in fulfillment of the requirements for the degree of Doctor of Philosophy School of Physics and Astronomy College of Science of Engineering ... of light To be submitted, 2014 Trang 7The original research described in this thesis spans a collection of topics in the theory of namics, each of which touches upon the angular momentum of light ... is, in fact, a mereglimpse of a much larger picture: light possesses an infinite number of distinct angular momenta,the conservation of which in the strict absence of charge reflects the myriad

Ngày tải lên: 22/12/2014, 20:49

... daylight Modern light sources ensure the required spectrum, luminaires the right distribution of light and an intelligent control system makes the lighting dynamic Trang 21light has no effectlight ... choice of luminairesand light sources, lighting can be regulated to suit the time of day Suitable luminaires and light sources The lighting industry today markets numerous luminaires designed to offer ... andLightingEurope forecasts that “human cen-tric lighting” will command around sevenpercent of the lighting market by 2020 Themajority of applications, according to theresearchers, will be in office

Ngày tải lên: 16/05/2015, 09:00

... refraction of light rays [1, 2], isotropic reflections [3], invisibility of cloaked objects and folding of visual space [4, 5], limitless imaging [6, 7], reversal of Cherenkov radiation [8], reversal of ... 8VITrang 10VIIITrang 11ACKNOWLEDGEMENTS V  TABLE OF CONTENTS IX  SUMMARY…… XI  LIST OF TABLES XIII  LIST OF FIGURES XIV  LIST OF SYMBOLS XVIII  LIST OF PUBLICATIONS XIX  CHAPTER 1 INTRODUCTION……… ... features of Graded-Index Media from the Geometrical Optics point of view and we explore effective techniques of analysis and design of interesting optical Meta-Devices First, with the help of tensor

Ngày tải lên: 09/09/2015, 11:11

... studying visible light because the slit spacing is on the order of the wavelength of the light (~ few tenths of microns)  Visible light is a very small part of the spectrum of electromagnetic waves. ...  Conclusions of diffraction picture on the screen:  Depending on the size of aperture, the number of open zones m is odd or even: • If m is odd → at the center point P there is a light spot • ... properties of wave processes, Huygen introduced the concept of wave front, and the rule how to draw a wave front from known sharp of at some former time  We can squeeze more resolution out of a given...

Ngày tải lên: 17/01/2014, 04:20