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Improving the operational stability of perovskite solar cells with cesium-doped graphene oxide interlayer

Journal of Energy Chemistry 2024年第9期96卷 483-490页

作者： Masaud Almalki Katerina Anagnostou Konstantinos Rogdakis Felix t.Eickemeyer Mostafa Othman Minas M.Stylianakis Dimitris tsikritzis Anwar Q.Alanazi Nikolaos tzoganakis Lukas Pfeifer Rita therisod Xiaoliang Mo Christian M.Wolff Aïcha Hessler-Wyser Shaik M.Zakeeruddin Hong Zhang Emmanuel Kymakis Michael Grätzel Laboratory of Photonics and Interfaces École Polytechnique Fédérale de Lausanne(EPFL)Lausanne 1015Switzerland Department of Electrical and Computer Engineering Hellenic Mediterranean UniversityHeraklionCrete 71410Greece Institute of Electrical and Microengineering(IEM)Photovoltaics and thin-Film Electronics Laboratory(PV-Lab) École Polytechnique Fédérale de Lausanne(EPFL)Neuchâtel 2000Switzerland Department of Nursing Faculty of Health SciencesHellenic Mediterranean UniversityCrete 71410Greece Centre Interdisciplinaire de Microscopie Electronique École Polytechnique Fédérale de Lausanne(EPFL)Lausanne 1015Switzerland Future Energy technology Institute King Abdulaziz City for Science and Technology(KACST)P.O.Box 6086Riyadh 11442Saudi Arabia State Key Laboratory of Photovoltaic Science and technology Shanghai Frontiers Science Research Base of Intelligent Optoelectronics and PerceptionInstitute of OptoelectronicsDepartment of Materials ScienceFudan UniversityShanghai 200433China

Perovskite solar cells(PSCs)have made great advances in terms of power conversion efficiency(PCE),yet their subpar stability continues to hinder their *** interface between the perovskite layer and the charge-carrier transporting layers plays a crucial role in undermining the stability of *** this work,we propose a strategy to stabilize high-performance PSCs with PCE over 23%by introducing a cesium-doped graphene oxide(GO-Cs)as an interlayer between the perovskite and hole-transporting *** GO-Cs treated PSCs exhibit excellent operational stability with a projected t80(the time where the device PCE reduces to 80%of its initial value)of 2143 h of operation at the maximum powering point under one sun illumination.

关键词： Perovskite solar cells Doped graphene oxide Graphene related material Long-term operational stability

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Prevalence, correlates, attitude and treatment seeking of erectile dysfunction among type 2 diabetic Chinese men attending primary care outpatient clinics

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Asian Journal of Andrology 2014年第5期16卷 755-760,I0010页

作者： Wai Hon Lo Sau Nga Fu Carlos king Ho Wong Ee San Chen Department of Family Medicine and Primary Health Care Kowloon West Cluster Hospital Authority Hong Kong China Department of Family Medicine and Primary Care Li Ka Shing Faculty of Medicine University of Hong Kong Hong Kong China Department of Linguistics School of Humanities University of Hong Kong Hong Kong China

to investigate the prevalence, correlates, attitude and treatment seeking behavior of erectile dysfunction （ED） in type 2 diabetes mellitus （t2DM） patients in the primary care setting, a multi-center cross-sectional survey using a structured anonymous self-administered questionnaire was performed in 10 general outpatient clinics. Of the 603 subjects （91% response rate）, the prevalence of ED men, as defined by the International Index of Erectile Function, was 79.1%. Most subjects had mild ED （28.9%）, followed by mild-to-moderate ED （27.9%）, then moderate ED （13.4%） and severe ED （9%）. Nearly 55% of those with ED did not consider themselves as having ED. Less than 10% of them had ever sought medical treatment, although 76.1% of them wished to receive management from doctor（s） should they be diagnosed with ED. they considered the most important management from doctors to be clinical assessment （41.7%）, followed by management of potential underlying cause （37.8%）, referral to specialist （27.5%）, education （23.9%）, prescription of phosphodiesterase type 5 inhibitors （16.9%） and referral to ~：ounseling service （6.7%）. the prevalence of ED was strongly associated with subjects who thought they had ED （odds ratio （OR） = 90.49 （20.00-409.48, P 〈 0.001）） and were from the older age group （OR = 1.043 （1.011-1.076, P = 0.008））. In conclusion, ED is highly prevalent among t2DM men. the majority of them wanted management from doctors should they have ED, but only a minority would actually voice out the request. Screening of ED among t2DM men using structural questionnaire allowed the diagnosis of more than half of the ED cases, which otherwise would have gone undiagnosed.

关键词： diabetes mellitus erectile dysfunction prevalence risk factors

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Dietary analysis of the House Swift(Apus nipalensis)in Hong Kong using prey DNA in faecal samples

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Avian Research 2021年第1期12卷 86-101页

作者： Chun ting Chung Hok Sze Wong Man Long Kwok Qi Meng king Ming Chan School of Life Sciences The Chinese University of Hong KongSha Tin 999077N.TChina Swift and Swallow Research Group The Hong Kong Bird Watching Society7CV Ga Building532 Castle Peak RoadLai Chi KokKowloonHong Kong 999077China

Background:to understand the dietary composition of the highly aerial swift(Apodidae),ecologists conventionally depend on the morphological identification of prey items from food boluses or stomach contents,but these techniques are often invasive,require expertise in identification,and often cannot produce accurate identifications at the species ***:DNA barcoding was used to analyse the dietary composition of House Swifts(Apus nipalensis)in Hong Kong,*** samples from five different colonial nest sites were collected between 2019 and *** used universal primers to amplify a region of the cytochrome C oxidase gene from prey DNA in the faecal samples for identification ***:ten different orders and 44 families from three different classes of Arthropoda were identified in the collected faecal ***,Hemiptera and Diptera were the most prevalent groups of prey found in the *** in the dietary composition of House Swifts during the breeding(April to September)and nonbreeding(October to March)season were also ***,particularly ants(Formicidae),were predominant in the diet during the breeding season,whereas Diptera and Hemiptera were predominant during the non-breeding ***:the prey groups identified in this study were similar to those identified in a previous study of the diet of House Swift,which also suggests a possible role of House Swifts in reducing the numbers of local insect *** study demonstrates the usefulness of applying molecular tools for the dietary analysis of aerial *** local forested areas may be crucial for the maintenance of House Swift population.

关键词： Diet DNA barcoding House swift Urbanisation threat

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Structural brain differences between ultra-endurance athletes and sedentary persons

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Sports Medicine and Health Science 2020年第2期2卷 89-94页

作者： t.Paruk L.Rauch M.Jankiewicz K.Van Breda D.J.Stein M.king Department of Exercise Science and Sports Medicine University of Cape TownSouth Africa Division of Biomedical Engineering Department of Human BiologyUniversity of Cape TownSouth Africa SAMRC Unit on Risk&Resilience in Mental Disorders Dept of Psychiatry&Neuroscience InstituteUniversity of Cape TownSouth Africa

Participation in ultra-endurance events has increased in recent years and requires extreme levels of moderate to vigorous physical activity(MVPA).Moderate levels of MVPA have been associated with increased brain volume but the effects of extreme levels of MVPA on brain volume is *** a result,we sought to compare the brains of those who engage in extremely high levels of MVPA with those who are sedentary using magnetic resonance *** performed whole brain volumetric analyses and voxel-based morphometry on 12 ultraendurance athletes(1078.75±407.86 min of MVPA/week)and 9 sedentary persons(18.0±56.9 min of MVPA/week).Whole-brain analyses revealed that those who participate in ultra-endurance training have increased grey(pte(p=0.031),and total matter volume(pthat ultra-endurance athletes have smaller regional grey matter volume in the right primary sensory and motor cortex,inferior and middle frontal gyrus,and left *** research is warranted to determine why ultra-endurance athletes have lower regional volumes in these areas despite having overall increased grey and white matter volumes.

关键词： Ironman athletes Ultra-racing Ultra-training MRI Ultra endurance

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1D-2D nanohybrid-based textile strain sensor to boost multiscale deformative motion sensing performance

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Nano Research 2022年第9期15卷 8398-8409页

作者： Xiaoting Li Keng Huat Koh Jiaqi Xue Chun Ho So Na Xiao Chung tin king Wai Chiu Lai Department of Biomedical Engineering City University of Hong KongKowloon TongHong KongChina

the development of strain sensors with both superior sensitivity(gauge factor(GF)>100)and broad strain-sensing range(>50%strain)is still a grand ***,which demonstrate significant structural deformation under microscale motion,are required to offer high *** connection of materials upon large-scale motion is demanded to widen strainsensing ***,it is hard to achieve both features ***,we design a crepe roll structure-inspired textile yarn-based strain sensor with one-dimensional(1D)-two-dimensional(2D)nanohybrid strain-sensing sheath,which possesses superior *** ultrastretchable strain sensor exhibits a wide and stable strain-sensing range from microscale to large-scale(0.01%–125%),and superior sensitivity(GF of 139.6 and 198.8 at 0.01%and 125%,respectively)*** strain sensor is structurally constructed by a superelastic 1D-structured core elastomer polyurethane yarn(PUY),a novel high conductive crepe roll-structured(CRS)1D-2D nanohybrid multilayer sheath which assembled by 1D nanomaterials silver nanowires(AgNWs)working as bridges to connect adjacent layers and 2D nanomaterials graphene nanoplates(GNPs)offering brittle lamellar structure,and a thin polydopamine(PDA)wrapping layer providing protection in exterior *** the stretching/deformation process,microcracks originate and propagate in the GNPs lamellar structure enable resistance to change significantly,while AgNWs bridge adjacent GNPs to accommodate applied stress partially and boost *** 1D crepe roll structure-inspired strain sensor demonstrates multifunctionality in multiscale deformative motion detection,such as respiratory motions of Sprague–Dawleyw rat,flexible digital display,and proprioception of multi-joint finger bending and antagonistic flexion/extension motions of its flexible continuum body.

关键词： crepe roll-inspired multifunctional yarn strain sensor one-dimensional silver nanowires/two-dimensional graphene nanoplates(1D AgNWs/2D GNPs)nanohybrid multi-scale motion detection e-textiles tactile sensing proprioception of the endoscopic robot

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topological superconducting phase in high-t_(c) superconductor MgB_(2) with Dirac-nodal-line fermions

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npj Computational Materials 2019年第1期5卷 663-669页

作者： Kyung-Hwan Jin Huaqing Huang Jia-Wei Mei Zheng Liu Lih-king Lim Feng Liu Department of Materials Science and Engineering University of UtahSalt Lake CityUT 84112USA Institute for Quantum Science and Engineering and Department of PhysicsSouthern University of Science and Technology518055 ShenzhenChina Institute for Advanced Study Tsinghua University100084 BeijingChina Collaborative Innovation Center of Quantum Matter 100084 BeijingChina

topological superconductors are an intriguing and elusive quantum phase,characterized by topologically protected gapless surface/edge states residing in a bulk superconducting gap,which hosts Majorana ***,all currently known topological superconductors have a very low transition temperature,limiting experimental measurements of Majorana *** we discover the existence of a topological Dirac–nodal-line state in a well-known conventional high-temperature superconductor,MgB_(2).First-principles calculations show that the Dirac–nodal-line structure exhibits a unique one-dimensional dispersive Dirac–nodal line,protected by both spatial-inversion and time-reversal symmetry,which connects the electron and hole Dirac *** importantly,we show that the topological superconducting phase can be realized with a conventional s-wave superconducting gap,evidenced by the topological edge mode of the MgB_(2) thin films showing chiral edge *** discovery may enable the experimental measurement of Majorana fermions at high temperature.

关键词： temperature. topological Dirac

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3D Printing of Polylactic Acid Bioplastic–Carbon Fibres and twisted Kevlar Composites through Coextrusion Using Fused Deposition Modeling

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Journal of Renewable Materials 2020年第12期8卷 1671-1680页

作者： J.Y.tey W.H.Yeo Y.J.king W.O.Ding Department of Mechanical and Material Engineering Lee Kong Chian Faculty of Engineering and ScienceUniversiti Tunku Abdul RahmanJalan Sungai LongBandar Sungai LongCheras43000 KajangSelangorMalaysia

Polylactic acid(PLA)bioplastic is a common material used in Fused Deposition Modeling(FDM)3D *** is biodegradable and environmentally friendly biopolymer which made out of ***,it exhibits weak mechanical properties which reduced its usability as a functional prototype in a real-world *** the present study,two PLA composites are created through coextruded with 3K carbon fibres and twisted Kevlar string(as core fibre)to form a fibre reinforced parts(FRP).the mechanical strength of printed parts was examined using AStM D638 standard with a strain rate of 1 mm/*** has been demonstrated that the FRPs coextruded with 3K carbon fibres had achieved significant improvement in Young’s modulus(+180.6%,9.205 GPa),ultimate tensile strength(+175.3%,103 MPa)and maximum tensile strain(+21.6%,1.833%).Although the Young’s modulus of Kevlar FRP was found to be similar to as compared to unreinforced PLA(~3.29 GPa),it has gained significant increment in terms of maximum tensile strain(+179.7%,104.64 MPa),and maximum tensile strain(+257%,5.384%).thus,this study revealed two unique composite materials,in which the 3K carbon FRP can offer stiff and high strength structure while Kevlar FRP offers similar strength but at a higher elasticity.

关键词： 3D printing Kevlar fibre 3K carbon fibre coextruded reinforced plastic polylactic acid bioplastic

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测定多角磁阻效应表征石油焦的结构特征

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新型炭材料 1994年第4期10卷 40-41页

作者： king t.R. 乔文明美

0 引言由延迟焦炉得到的石油针状焦是电弧炼钢炉中的石墨电极的主要组成部分。采用低热膨胀系数(CtE)的材料,可以最大限度地减小其热应力。提高焦粒的轴排列或取向度可减小所得制品的CtE值。除取向度外,影响CtE值的因素还有焦粒的大小... 详细信息

0 引言由延迟焦炉得到的石油针状焦是电弧炼钢炉中的石墨电极的主要组成部分。采用低热膨胀系数(CtE)的材料,可以最大限度地减小其热应力。提高焦粒的轴排列或取向度可减小所得制品的CtE值。除取向度外,影响CtE值的因素还有焦粒的大小及排列、石墨化温度、热压条件等。

关键词：石油焦结构测定磁阻效应

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In Silico Prediction and Validation of Gfap as an miR-3099 target in Mouse Brain

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Neuroscience Bulletin 2017年第4期33卷 373-382页

作者： Shahidee Zainal Abidin Jia-Wen Leong Marzieh Mahmoudi Norshariza Nordin Syahril Abdullah Pike-See Cheah king-Hwa Ling Neuro Biology and Genetics Group Universiti Putra Malaysia43400 SerdangSelangorMalaysia Genetics and Regenerative Medicine Research Center Universiti Putra Malaysia43400 SerdangSelangorMalaysia Medical Genetics Unit Department of Biomedical SciencesUniversiti Putra Malaysia43400 SerdangSelangorMalaysia Department of Human Anatomy Faculty of Medicine and Health SciencesUniversiti Putra Malaysia43400 SerdangSelangorMalaysia Institute of Biological Sciences Faculty of ScienceUniversity of Malaya50603 Kuala LumpurMalaysia

MicroRNAs are small non-coding RNAs that play crucial roles in the regulation of gene expression and protein synthesis during brain development. MiR-3099 is highly expressed throughout embryogenesis, especially in the developing central nervous system. Moreover, miR-3099 is also expressed at a higher level in differentiating neurons in vitro, suggesting that it is a potential regulator during neuronal cell development. this study aimed to predict the target genes of miR-3099 via in-silico analysis using four independent prediction algorithms（miRDB,miRanda, target Scan, and DIANA-micro-t-CDS） with emphasis on target genes related to brain development and function. Based on the analysis, a total of 3,174 miR-3099 target genes were predicted. those predicted by at least three algorithms（324 genes） were subjected to DAVID bioinformatics analysis to understand their overallfunctional themes and representation. the analysis revealed that nearly 70% of the target genes were expressed in the nervous system and a significant proportion were associated with transcriptional regulation and protein ubiquitination mechanisms. Comparison of in situ hybridization（ISH） expression patterns of miR-3099 in both published and in-house-generated ISH sections with the ISH sections of target genes from the Allen Brain Atlas identified 7 target genes（Dnmt3a, Gabpa, Gfap, Itga4,Lxn, Smad7, and tbx18） having expression patterns complementary to miR-3099 in the developing and adult mouse brain samples. Of these, we validated Gfap as a direct downstream target of miR-3099 using the luciferase reporter gene system. In conclusion, we report the successful prediction and validation of Gfap as an miR-3099 target gene using a combination of bioinformatics resources with enrichment of annotations based on functional ontologies and a spatio-temporal expression dataset.

关键词： target gene Neurogenesis In silico Astrogliogenesis Bioinformatics

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High order modes of intense second harmonic light produced from a plasma aperture

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Matter and Radiation at Extremes 2022年第5期7卷 7-16页

作者： E.F.J.Bacon M.king R.Wilson t.P.Frazer R.J.Gray P.McKenna SUPA Department of Physics University of StrathclydeGlasgow G40NGUnited Kingdom the Cockcroft Institute Sci-Tech DaresburyWarrington WA44ADUnited Kingdom

Because of their ability to sustain extremely high-amplitude electromagnetic fields and transient density and field profiles,plasma optical components are being developed to amplify,compress,and condition high-power laser *** recently demonstrated the potential to use a relativistic plasma aperture—produced during the interaction of a high-power laser pulse with an ultrathin foil target—to tailor the spatiotemporal properties of the intense fundamental and second-harmonic light generated[Duff et al.,***.10,105(2020)].Herein,we explore numerically the interaction of an intense laser pulse with a preformed aperture target to generate second-harmonic laser light with higher-order spatial *** maximum generation efficiency is found for an aperture diameter close to the full width at half maximum of the laser focus and for a micrometer-scale target *** spatial mode generated is shown to depend strongly on the polarization of the drive laser pulse,which enables changing between a linearly polarized tEM01 mode and a circularly polarized Laguerre–Gaussian LG01 *** demonstrates the use of a plasma aperture to generate intense higher-frequency light with selectable spatial mode structure.

关键词： polarization intense harmonic

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