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Light correcting light with nonlinear optics

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Advanced photonics 2024年第2期6卷 41-49页

作者： Sachleen Singh Bereneice Sephton Wagner Tavares Buono vincenzo d'Ambrosio Thomas Konrad Andrew Forbes University of the Witwatersrand School of Physics Università degli studi di Napoli “Federico Ⅱ” Dipartimento di Fisica “E.Pancini” University of Kwa Zulu-Natal School of Chemistry and Physics

Structured light, where complex optical fields are tailored in all their degrees of freedom, has become highly topical of late, advanced by a sophisticated toolkit comprising both linear and nonlinear *** undesired structure from light is far less developed, leveraging mostly on inverting the distortion,e.g., with adaptive optics or the inverse transmission matrix of a complex channel, both requiring that the distortion be fully characterized through appropriate measurement. We show that distortions in spatially structured light can be corrected through difference-frequency generation in a nonlinear crystal without any need for the distortion to be known. We demonstrate the versatility of our approach using a wide range of aberrations and structured light modes, including higher-order orbital angular momentum(OAM) beams,showing excellent recovery of the original undistorted field. To highlight the efficacy of this process, we deploy the system in a prepare-and-measure communications link with OAM, showing minimal cross talk even when the transmission channel is highly aberrated, and outline how the approach could be extended to alternative experimental modalities and nonlinear processes. Our demonstration of light-correcting light without the need for measurement opens an approach to measurement-free error correction for classical and quantum structured light, with direct applications in imaging, sensing, and communication.

关键词： phase conjugation aberration correction orbital angular momentum nonlinear optics

A note from the Editorial Office

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Chinese Science Bulletin 2011年第1期56卷 1-2页

作者： AN Rui, ph.d. Executive director Editorial Office of Chinese Science Bulletin

从编辑部的编辑 A

关键词：编辑部编辑委员会公务员杂志科学

Future Prospects:Scientific Quality Relies on the Critical Reviews from Our Peers

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Journal of Integrative Plant Biology 2009年第1期51卷 1-2页

作者： Chun-Ming Liu ph.d. Editor-in-Chief

From Executive Editor to Editor-in-Chief is a big jump for me, and means many more responsibilities. I could feel the pressure on my shoulders; from the hopes of my predecessors, my colleagues, and the board members. As a journal with a 57-year history, JIPB has built its credit over the years, publishing many original works in both Chinese and English. However, in the international scientific community, JIPB is still a minor player, especially under the current not-so-healthy impact factor-driven publishing environment.

关键词： Future international especially Chinese player impact works minor means

data-driven Simulations of Magnetic Field Evolution in Active Region 11429:Magneto-frictional Method Using PENCIL COdE

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Research in Astronomy and Astrophysics 2024年第2期24卷 74-82页

作者： P.Vemareddy Jorn Warnecke ph.A.Bourdin Indian Institute of Astrophysics Sarjapur roadII BlockKoramangalaBengaluru-560034India Max-Planck-Institut für Sonnensystemforschung Justus-von-Liebig-Weg 3D-37077 GöttingenGermany Institute of physics University of GrazUniversitätsplatz 5A-8010 GrazAustria

Coronal magnetic fields evolve quasi-statically over long timescales and dynamically over short *** of now there exist no regular measurements of coronal magnetic fields,and therefore generating the coronal magnetic field evolution using observations of the magnetic field at the photosphere is a fundamental requirement to understanding the origin of transient phenomena from solar active regions(ARs).Using the magneto-friction(MF)approach,we aim to simulate the coronal field evolution in the solar AR *** MF method is implemented in the open source PENCIL COdE along with a driver module to drive the initial field with different boundary conditions prescribed from observed vector magnetic fields at the *** order to work with vector potential and the observations,we prescribe three types of bottom boundary drivers with varying free-magnetic *** MF simulation reproduces the magnetic structure,which better matches the sigmoidal morphology exhibited by Atmospheric Imaging Assembly(AIA)images at the pre-eruptive *** found that the already sheared field further driven by the sheared magnetic field will maintain and further build the highly sheared coronal magnetic configuration,as seen in AR ***-driven MF simulation is a viable tool to generate the coronal magnetic field evolution,capturing the formation of the twisted flux rope and its eruption.

关键词： Sun corona-Sun evolution-Sun magnetic fields-Sun photosphere

The Mindfulness And Acceptance Workbook For depression: Using Acceptance And Commitment Therapy To Move Through depression And Create A Life Worth Living (New Harbinger Self-Help Workbook)

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A multivariate analysis on spatiotemporal evolution of Covid-19 in Brazil

2008年

作者： Patricia Robinson ph.d. Kirk Strosahl ph.d.

ISBN: (纸本)9781572245488

There are hundreds of books that will try to help you overcome or put an end to depression. But what if you could use your depression to change your life for the better? Your symptoms may be signals that something in your life needs to change. Learning to understand and interpret these signals is much more important than ignoring or avoiding them-approaches that only make the situation worse. This workbook uses techniques from acceptance and commitment therapy (ACT) to offer a new treatment plan for depression that will help you live a productive life by accepting your feelings instead of fruitlessly trying to avoid *** Mindfulness & Acceptance Workbook for depression will show you, step-by-step, how to stop this cycle, feel more energized, and involve yourself in pleasurable and fulfilling activities that will help you work through, rather than avoid, aspects of your life that are depressing you. Use the techniques in this book to evaluate your own depression and create a personalized treatment plan. You'll enrich your total life experience by focusing your energy not on fighting depression, but on living the life you *** a *** in ancient wisdom and the newest scientific evidence, this book provides a host of tools for those suffering from depression. Strosahl and Robinson invite us to take a wholly new view of what depression is, and how to deal skillfully with it through strategies born of acceptance and self-compassion. Their book shows the pathways into and out of depression and gives us a vital map to see clearly where genuine peace and freedom lie. -Mark Williams, professor of clinical psychology and Wellcome Principal Research Fellow at the University of Oxford

关键词： acceptance using workbook mindfulness depression

来源：畅想之星图书光盘版（南... 评论

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Infectious disease Modelling 2020年第1期5卷 670-680页

作者： Marcio Luis Ferreira Nascimento ph.d. Nano Group@UFBA Department of Chemical EngineeringPolytechnic SchoolFederal University of BahiaRua Aristides Novis 2Federação40210-630SalvadorBABrazil PEI-Graduate Program in Industrial Engineering Department of Chemical EngineeringPolytechnic SchoolFederal University of BahiaRua Aristides Novis 2Federação40210-630SalvadorBABrazil

This data-driven work aims to analyze and classify the spatiotemporal distribution of all Brazilian states considering data so diverse as the number of Covid-19 cases,deaths,confirmed cases per 100 k inhabitants,mortality per 100 k inhabitants and case fatality rates as health *** also considered population,area and population density as geographic ***,GdP and HdI were taken into account as economic and social *** this task data were collected from April 3rd until August 8th,2020,corresponding to epidemiological weeks 14e32,reaching three million cases and a hundred thousand *** this data it was possible to classify Brazilian states using multivariate methods into possible groups by means of non-hierarchical(k-means)cluster as well as factor *** was possible to group all states plus the Federal district into five clusters,taking into account these 10 variables over the first five months of the *** changes between states were observed over time and clusters,and between three and four factors were ***,even with great difference on health indicators during days,the number of clusters remains ***,S^ao Paulo and Rio de Janeiro states were ranked at top list taking into account all epidemiological *** were observed between variables,such as the number of Covid cases and deaths with GdP for most of epidemiological *** clusters were more critical due to specific variables,including cities that are main *** multivariate findings would provide a comprehensive description of the ongoing Covid-19 epidemic and may help to guide subsequent studies to understand and control virus transmission.

关键词： Pandemic COVId-19 Coronavirus K-means clustering Factor analysis Spatiotemporal analysis

Exercise,Intestinal Absorption,and Rehydration

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中国运动医学杂志 2001年第2期20卷 221-224页

作者： CarlV.Gisolfi,ph.d. Gatorade Sports Medicine Review Board The Gatorade SportsScience Institute

KEYPOINTS1. The proximal small intestine (duodenum & jejunum) is the primary site of fluid absorption. It absorbs about 50% to 60% of any given fluid load. The colon or large intestine absorbs approximately 80 to 90% ... 详细信息

关键词： fluid absorption small intestine large intestine

FLUId ANd CARBOHYdRATE REPLACEMENT dURING EXERCISE:HOW MUCH ANd WHY?

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中国运动医学杂志 2001年第3期20卷 331-336页

作者： Edward F. Coyle,ph.d.

KEY *** prolonged exercise in the heat, peoplecan become dehydrated at a rate of 1-2L everyhour (about 2-4lbs of body weight loss per hour).The rate of dehydration can be monitored byrecording changes in nude body wei... 详细信息

关键词： FLUId ANd CARBOHYdRATE REPLACEMENT dURING EXERCISE

Electroless Plating of Ni-Fe-P Alloy and Corrosion Resistance of the deposit

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Journal of Materials Science & Technology 2005年第1期21卷 39-42页

作者： Senlin WANGCollege of Materials Science and Engineering, Huaqiao University, Quanzhou 362021, ChinaAssoc. Prof., ph.d., Coll. of Mat. Sci. and Eng. Huaqiao Univ. Quanzhou 362021 China

Electroless Ni-Fe-P alloys in an alkaline bath were plated. The effects of deposition parameters on the plating rate and the coating composition were examined. The weight loss test and the anodic polarization measurement of the deposits in 3.5 wt pct NaCI solution (ph7.0) showed that the deposits with the mole ratio of NiS04/FeSO4 being 0.07:0.03, ph8.0 and 7.5 possess better corrosion resistance than that of the other deposits and the Ni-Fe-P deposits did not form passive films in this environment. In 5.0 wt pct NaOH solution, the Ni-Fe-P deposits have better corrosion resistance and formed passive films.

关键词： Nickel Iron Electroless deposition Anodic polarization