Monochromatic Scheme Research Articles

Ginkgo biloba Metaphor On Gala Party Performance Costume Design

The Ginkgo biloba plant is the only living species in the division of Ginkgophyta. It is also known as the maidenhair tree. The uniqueness of Ginkgo biloba lies in its fan-shaped leaves. The color and shape of Ginkgo biloba have been adapted into a performance costume for the prestigious Met Gala Party. This article discusses the design of the stage costume using Ginkgo biloba as a source of metaphor in fashion with adaptation techniques. The method used involves designing fashion products, starting from creating a concept, and mood board, making several alternative designs, and product prototypes. The resulting product is a Ginkgo biloba metaphor visualized in the form of fashion silhouettes, colors, accessories, and decorative details in the form of knife pleats. Respondent’s response to the metaphor through the adaptation technique of the Ginkgo biloba leaf shape is that almost all respondents can capture it well in the form of accessories, knife pleats, and silhouettes. However, the metaphor through the adaptation technique of the pattern arrangement, less than half of the respondents can capture it. In terms of color, almost all respondents can capture the color metaphor in the monochromatic scheme of the basic yellow color as the source of color ideas from Ginkgo biloba.

Fast EXAFS measurement in piezo-driven single-crystal monochromatization scheme

Fast EXAFS measurement in piezo-driven single-crystal monochromatization scheme

Monochromatization of e⁺e⁻ Colliders with a Large Crossing Angle

The relative center-of-mass energy spread at $e^+e^-$ colliders is about $10^{-3}$, which is much larger than the widths of narrow resonances produced in the s-channel in $e^+e^-$ collisions. This circumstance greatly lowers the resonance production rates of J/Psi, Upsilon(1S), Upsilon(2S), Upsilon(3S) and makes it extremely difficult to observe resonance production of the Higgs boson. Thus, a significant reduction of the center-of-mass energy spread would open up great opportunities in the search for new physics in rare decays of narrow resonances, the search for new narrow states with small $\Gamma_{e^+e^-}$, the study of true muonium and tauonium, etc. The existing monochromatization scheme is only suitable for head-on collisions, while $e^+e^-$ colliders with crossing angles (the so-called Crab Waist collision scheme) can provide significantly higher luminosity due to reduced collision effects. In this paper, we propose a new monochromatization method for colliders with a large crossing angle. The contribution of the beam energy spread to the spread of the center-of-mass energy is canceled by introducing an appropriate energy-angle correlation at the interaction point; $\sigma_W/W \sim (3-5)10^{-6}$ appears possible. Limitations of the proposed method are also considered.

Collision monochromatization in e+e− colliders

The manuscript describes several monochromatization schemes starting from A.~Renieri \cite{ref:Renieri} proposal for head-on collisions based on correlation between particles transverse position and energy deviation. We briefly explain initial proposal and expand it for crossing angle collisions. Then we discuss new monochromatization scheme for crossing angle collisions based on correlation between particles longitudinal position and energy deviation.

Polychromatic spectral pattern analysis of ultra-weak photon emissions from a human body

Ultra-weak photon emission (UPE), often designated as biophoton emission, is generally observed in a wide range of living organisms, including human beings. This phenomenon is closely associated with reactive oxygen species (ROS) generated during normal metabolic processes and pathological states induced by oxidative stress. Application of UPE extracting the pathophysiological information has long been anticipated because of its potential non-invasiveness, facilitating its diagnostic use. Nevertheless, its weak intensity and UPE mechanism complexity hinder its use for practical applications. Spectroscopy is crucially important for UPE analysis. However, filter-type spectroscopy technique, used as a conventional method for UPE analysis, intrinsically limits its performance because of its monochromatic scheme. To overcome the shortcomings of conventional methods, the authors developed a polychromatic spectroscopy system for UPE spectral pattern analysis. It is based on a highly efficient lens systems and a transmission-type diffraction grating with a highly sensitive, cooled, charge-coupled-device (CCD) camera. Spectral pattern analysis of the human body was done for a fingertip using the developed system. The UPE spectrum covers the spectral range of 450–750nm, with a dominant emission region of 570–670nm. The primary peak is located in the 600–650nm region. Furthermore, application of UPE source exploration was demonstrated with the chemiluminescence spectrum of melanin and coexistence with oxidized linoleic acid.

Dynamics of Wave Packets Generated at a Finite Distance from a Scattering Step

The scattering process of wave packets is often described recovering the simple monochromatic scheme supposing that the particle comes from −∞ with a sharp momentum distribution, thus allowing for approximations usually used in common calculations of physical quantities involved in the process. In this work, we study the scattering process of a Gaussian wave packet impinging on the step potential, finding out that its dynamics depends on the initial conditions of the incident particle, and in particular on the wave packet origin x0. We propose a semi-classical approximated model to describe the dynamics of the scattering wave packet, also defining a characteristic time interval tf as the time required for the formation of transmitted packet beyond the step. Through a comparison with the numerical solution of the SchrÖdinger equation, our model explains the tf as a function of the origin x0 and spread of the incident wave packet in coordinate space, giving rise to such dependence for a finite distance scattering processes.

Six-reflection meV-monochromator for synchrotron radiation

An in-line monochromatization scheme suitable for 10-40 keV synchrotron radiation is presented based on the use of six crystal reflections that achieves meV and sub-meV bandwidths with high efficiency. The theoretical spectral efficiency surpasses all previous multicrystal designs and approaches that of single room-temperature back-reflecting crystals. This article presents the designs of two such devices along with their theoretical and measured performances.

Penguins (review)

Reviewed by: Penguins Deborah Stevenson Pichon, Liz Penguins; written and illus. by Liz Pichon. Orchard/Scholastic, 200822p Library ed. ISBN 978-0-545-02215-6$12.99 R 4-6 yrs A flock of penguins already having a fine penguiny time in their zoo enclosure are intrigued when a young zoogoer drops a camera into their area. Though not everyone immediately grasps the possibilities ("'Are you sure you can't eat it?' asks a hungry penguin"), a little penguin shepherds the rest together and starts snapping away ("Everyone look at me and say FISH!"). The photo session finishes when the camera stops working; it makes its way to the lost and found and thence to its owner, who is surprised indeed by the pictures that finish up the roll. While the story loses a little energy with a conclusion that simply reminds viewers of the earlier photo session (and do kids really have film cameras any more?), there's a fair amount of charm in the telling of the tale; the simple present-tense narration shines with perky yet understated humor (as in the list of "Everyday Penguin Activities," featuring such stellar pastimes as "Look at people" and "Look at more people"), and the animal-interaction notion will appeal to young nature lovers. The art sets up a repeated rhythm of contrast between the black and white, peanut-shaped penguins and the strong horizontals of enclosure and pond edge, and the birds have an exaggerated oversimplicity that makes them even more endearing. Pichon cleverly uses color sparingly in the penguin-centric scenes, with the birds' sunny yellow bills and feet standing out against the monochromatic scheme even when there are quiet background tones of blue and lavender, and youngsters will enjoy the surprise of the special features (a die-cut window approximating a viewfinder and a foldout series of the penguins' pictures). This is a droll and endearing tale that will have kids hopefully dangling their own Nikons over the penguin enclosure. Copyright © 2009 The Board of Trustees of the University of Illinois

The Last of the Mohicans ou l'incarnat de la nation

The Last of the Mohicans defines the colour red as an embattled imaginary site for negotiating political and aesthetic claims. While devising narrative tactics which eradicate the “Red Skins” from the national landscape, this “Narrative of 1757” fantasizes in retrospect the advent of an all-white nation that could yet declare the legacy of the colour red as the mark of its indigenous character. Aesthetically, the novel pursues contradictory aims: if the colour red is foregrounded as the sign of the new nation’s vitality, it must nevertheless be subdued, as it conjures up the genocidal violence unleashed by territorial conquest. This study suggests how the romance exposes the myth of a “substantial” colour as an ideological construct supporting the dream of a “natural” nation. It then argues that in scenes of cross-dressing and face painting, Cooper’s text, exploring the use of the colour as cosmetics, also becomes the vehicle of metamorphic shapes which defeat the plot’s monochromatic scheme.

Synchrotron-betatron coupling due to monochromatization.

The effects of large dispersion at the interaction point are discussed within the linear approximation of the beam-beam force. The synchrotron and betatron motions affect each other. Synchrotron and betatron tune shifts as well as bunch-length and energy-spread modifications appear, among many effects. Depending on the parameters, degradations of the luminosity can occur due to the hourglass effect. More serious is an enlargement of the collision energy spread, which may reduce the event rate and invalidate the monochromatization scheme.

Monochromatization as the way to maximum luminosity B-factories

The main problems of obtaining the maximum luminosity in B-factories are discussed. Different B-factory schemes are considered. It is shown that the monochromatization scheme elaborated at the INP (Novosibirsk) has some advantages when compared with other ones.