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Projecting the potential distribution and analyzing the bioclimatic factors of four Rhododendron *** species under climate warming

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Journal of Forestry Research 2023年第6期34卷 1707-1721页

作者： lan yang Huie Li College of Agriculture Guizhou UniversityGuiyang 550025People’s Republic of China

Tsutsusi is one of the eight subgenera of the Rhododendron *** Tsutsusi species,***,***,***,and ***,have high ornamental and medicinal values,resulting in an increasing market *** species thrive in cool and humid environments and are widely distributed in Europe and *** global climate warming will affect the distribution of these valuable resources remains ***,this study analyzed the climatic suitability of these species for the first time on the basis of 1552 geographical distribution points and 19 bioclimatic factors using the maximum entropy *** results show that a suitable distribution area for all four species would decrease under climate *** main bioclimatic factors affecting their distribution are the mean temperature of the coldest quarter for ***,the mean diurnal range for ***,and precipitation of the warmest quarter for *** and *** addition,the contribution of the temperature-related bioclimatic factors to the distribution of *** and *** is higher than that of the associated precipitation-related climatic factors;in contrast,the contribution of precipitation-related bioclimatic factors to the distribution of *** and *** is higher than that of the temperature-related climatic *** results provide references for the introduction,conservation,sustainable development,and utilization of these four species in the future,and may also provide information with regards to other Rhododendron species.

关键词： Rhododendron simisii Rhododendron indicum Rhododendron schlippenbachii Rhododendron oldhamii Climate change Future distribution

Optical whispering-gallery mode barcodes for high-precision and wide-range temperature measurements

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Light(Science & Applications) 2021年第2期10卷 278-288页

作者： Jie Liao lan yang Department of Electrical&Systems Engineering Washington University in St.LouisMO 63130 St.LouisUSA Department of Physics Washington University in St.LouisMO 63130 St.LouisUSA

Temperature is one of the most fundamental physical properties to characterize various physical,chemical,and biological *** a slight change in temperature could have an impact on the status or dynamics of a ***,there is a great need for high-precision and large-dynamic-range temperature *** temperature sensors encounter difficulties in high-precision thermal sensing on the submicron ***,optical whispering-gallery mode(WGM)sensors have shown promise for many sensing applications,such as thermal sensing,magnetic detection,and ***,despite their superior sensitivity,the conventional sensing method for WGM resonators relies on tracking the changes in a single mode,which limits the dynamic range constrained by the laser source that has to be fine-tuned in a timely manner to follow the selected mode during the ***,we cannot derive the actual temperature from the spectrum directly but rather derive a relative temperature ***,we demonstrate an optical WGM barcode technique involving simultaneous monitoring of the patterns of multiple modes that can provide a direct temperature readout from the *** measurement relies on the patterns of multiple modes in the WGM spectrum instead of the changes of a particular *** can provide us with more information than the single-mode spectrum,such as the precise measurement of actual *** the high sensitivity of WGMs and eliminating the need to monitor particular modes,this work lays the foundation for developing a high-performance temperature sensor with not only superior sensitivity but also a broad dynamic range.

关键词： mode high spectrum

Photonics Research Interview with Professor Marlan Scully

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Photonics Research 2022年第1期10卷 256-260页

作者： lan yang Department of Electrical and Systems Engineering Washington University in St.LouisSt.LouisMissouri 63130USA

Professor Marlan Scully discusses his career in quantum optics with the Editor-in-Chief of Photonics Research,*** yang.

关键词： optics Photonics quantum

Flutter and gust response analysis of a wing model including geometric nonlinearities based on a modified structural ROM

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Chinese Journal of Aeronautics 2020年第1期33卷 48-63页

作者： Chao AN Chao yang Changchuan XIE lan yang School of Aeronautic Science and Engineering Beihang UniversityBeijing 100083China

In this paper,a framework is established for nonlinear flutter and gust response analyses based on an efficient Reduced Order Model(ROM).The proposed method can be used to solve the aeroelastic response problems of wings containing geometric nonlinearities.A structural modeling approach presented herein describes the stiffness nonlinearities with a modal *** orthogonal spanwise modes describe the foreshortening effects of the *** linearization of the ROM under nonlinear equilibrium states is applied to a nonlinear flutter analysis,and the fully nonlinear ROM coupled with the non-planar Unsteady Vortex Lattice Method(UVLM)is applied to gust response ***,extended Precise Integration Method(PIM)ensures accuracy of the dynamic equation *** demonstrate applicability and accuracy of the method presented,a wind tunnel test is conducted and good agreements between theoretical and test results of nonlinear flutter speed and gust response deflection are *** method described in this paper is suitable for predicting the nonlinear flutter speed and calculating the gust responses of a large-aspect-ratio wing in time ***,the results derived highlight the effects of geometric nonlinearities obviously.

关键词： Aeroelasticity Flutter Geometric nonlinearity Reduced order models Response analysis Structural model

Photonics Research Interview with Professor Yidong Huang

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Photonics Research 2024年第11期12卷 2521-2523页

作者： lan yang Editor-in-Chief Photonics Research Washington University in St.Louis

This interview article features Professor Yidong Huang, a pioneering scientist and exceptional community leader in optoelectronics, whose contributions extend beyond academia into entrepreneurship and leadership. As part of a new series launched by Photonics Research, this interview aims to highlight the journeys and achievements of prominent women in optics and photonics.

关键词： Laser communications Photonic crystals Photonics Real time imaging Reflection Surface plasmon polaritons

Photonics Research 10th anniversary:editorial

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Photonics Research 2023年第5期11卷 I0002-I0003页

作者： lan yang Research Washington University in St.Louis

As the editor-in-chief of Photonics Research,I am honored to serve in this role as we celebrate our 10th *** its launch in 2013,the journal has been dedicated to publishing and promoting high-quality research work in the field of optics and *** goal is to ensure that every paper accepted for publication is not only technically correct,but also adds new and important results to the field.

关键词： journal anniversary editor

Interfacial properties of 2D WS_(2)on SiO_(2)substrate from X-ray photoelectron spectroscopy and firstprinciples calculations

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Frontiers of physics 2022年第5期17卷 93-103页

作者： Changjie Zhou Huili Zhu Weifeng yang Qiubao Lin Tongchang Zheng lan yang Shuqiong lan Xiamen Key Laboratory of Ultra-Wide Bandgap Semiconductor Materials and Devices Department of PhysicsSchool of ScienceJimei UniversityXiamen 361021China Department of Microelectronics and Integrated Circuits Xiamen UniversityXiamen 361005China

Two-dimensional(2D)WS_(2)films were deposited on SiO_(2)wafers,and the related interfacial properties were investigated by high-resolution X-ray photoelectron spectroscopy(XPS)and first-principles *** the direct(indirect)method,the valence band offset(VBO)at monolayer WS_(2)/SiO_(2)interface was found to be 3.97 eV(3.86 eV),and the conduction band offset(CBO)was 2.70 eV(2.81 eV).Furthermore,the VBO(CBO)at bulk WS_(2)/SiO_(2)interface is found to be about 0.48 eV(0.33 eV)larger due to the interlayer orbital coupling and splitting of valence and conduction band ***,the WS_(2)/SiO_(2)heterostructure has a Type I energy-band *** band offsets obtained experimentally and theoretically are consistent except the narrower theoretical bandgap of SiO_(2).The theoretical calculations further reveal a binding energy of 75 meV per S atom and the totally separated partial density of states,indicating a weak interaction and negligible Fermi level pinning effect between WS_(2)monolayer and SiO_(2)*** combined experimental and theoretical results provide proof of the sufficient VBOs and CBOs and weak interaction in 2D WS_(2)/SiO_(2)heterostructures.

关键词： band offsets WS_(2) SiO_(2) X-ray photoelectron spectroscopy first-principles calculations

Bioinspired supramolecular macrocycle hybrid membranes with enhanced proton conductivity

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Nano Research 2024年第2期17卷 797-805页

作者： Pengfei yang Linlin Xu Panagiotis Trogadas Marc-Olivier Coppens yang lan Centre for Nature Inspired Engineering Department of Chemical EngineeringUniversity College LondonLondon WC1E 7JEUK

Enhancing the proton conductivity of proton exchange membranes(PEMs)is essential to expand the applications of proton exchange membrane fuel cells(PEMFCs).Inspired by the proton conduction mechanism of bacteriorhodopsin,cucurbit[n]urils(CB[n],where n is the number of glycoluril units,n=6,7,or 8)are introduced into sulfonated poly(ether ether ketone)(SPEEK)matrix to fabricate hybrid PEMs,employing a nature-inspired chemical engineering(NICE)*** carbonyl groups of CB[n]act as proton-conducting sites,while the host–guest interaction between CB[n]and water molecules offers extra protonconducting ***,the molecular size of CB[n]aids in their dispersion within the SPEEK matrix,effectively bridging the unconnected proton-conducting sulfonic group domains within the SPEEK ***,all hybrid membranes exhibit significantly enhanced proton ***,the SPEEK membrane incorporating 1 wt.%CB[8](CB[8]/SPEEK-1%)demonstrates the highest proton conductivity of 198.0 mS·cm^(−1) at 60°C and 100%relative humidity(RH),which is 228%greater than that of the pure SPEEK membrane under the same ***,hybrid membranes exhibit superior fuel cell *** CB[8]/SPEEK-1%membrane achieves a maximum power density of 214 mW·cm^(−2),representing a 140%improvement over the pure SPEEK membrane(89 mW·cm^(−2))at 50°C and 100%*** findings serve as a foundation for constructing continuous proton-conducting pathways within membranes by utilizing supramolecular macrocycles as fuel cell electrolytes and in other applications.

关键词： supramolecular macrocycle proton conductivity cucurbit[n]uril proton exchange membrane fuel cell

On the Period Variation of the W UMa-type Contact Binary V502 Ophiuchi

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Chinese Journal of Astronomy and Astrophysics 2006年第3期6卷 331-337页

作者： Qing-Yao Liu Yu-lan yang National Astronomical Observatories/Yunnan Observatory Chinese Academy of Sciences Kunming 650011

The variation in the orbital period of the W UMa type contact binary V502 Oph is analyzed. The orbital period exhibits a wavelike variation with a periodicity of 23.0 years and an amplitude of AP = 1.24 ×10^-5 days superimposed on secular decrease of dP/dt = 1.68× 10^-7 day per year. The long-term decrease may be accompanied by the contraction of the secondary at a rate of 83 m per year and a mass transfer rate from the primary to the secondary of 4.28×10^-8M· per year. The short-term oscillation may be explained by the presence of a third component. Orbital elements of the third body and its possible mass are presented.

关键词： stars: contact binary - period change - star: individual: V502 Oph