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Orange-emitting bimetallic nanoclusters combined with cyan-emitting Fe@TAOH as white light-emitting materials

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Chinese Chemical Letters 2022年第1期33卷 298-303页

作者： Wenying Mi na Shao College of Chemistry Beijing Normal UniversityBeijing 100875China

White-light-emitting diodes(WLEDs)possess many merits,such as high efficiency and *** cost-effective,environmentally friendly,high-performance luminophores to achieve high-quality,full-spectrum,white lighting is of great importance to the construction and progress of *** this work,solid-state,highly luminescent orange-emitting nanoclusters(MgCl_(2)-Lys-Ag/Au NCs)were prepared via the salt-induced precipitation of Lys-Ag/Au NCs from solution,which showed a high absolute quantum yield of 44.5%.A cyan-emitting metal-organic framework(MOF)-like nanomaterial(named Fe@TAOH)was also prepared by the self-assembly of the coordination compound of Fe^(3+)and TAOH acted upon by H_(3)PO_(4) via H-bonding andπ-πstacking interactions,which showed an emission peak at 485 nm and an absolute quantum yield of 21.7%.The potential application of the two facile-synthesis,low toxicity,and highly luminescent materials in WLEDs was *** WLEDs was constructed by coating powdered Fe@TAOH and MgCl_(2)-Lys-Ag/Au NCs samples on commercial GaN LED chip with 365 nm emissions,and it exhibited acceptable white light characteristics with a CIE color coordinates and a color rendering index(CRI)of(0.28,0.34)and 79.6,respectively,implying good prospects in the field of WLEDs.

关键词： Metal nanoclusters Salt-mediated precipitation Fe@TAOH MOFs Self-assembly White light-emitting materials

Research Progress in the Epidemiology of HIV/AIDS in China

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China CDC weekly 2021年第48期3卷 1022-1030页

作者： na He Department of Epidemiology School of Public Healthand The Key Laboratory of Public Health Safety of Ministry of EducationShanghai Institute of Infectious Diseases and Biosecurityand Yiwu Research Institute of Fudan UniversityFudan UniversityShanghaiChina

ABSTRACT After thirty-two years since the first domestic outbreak of human immunodeficiency virus(HIV)/acquired immune deficiency syndrome(AIDS)among injection drug users(IDUs)and almost two decades of comprehensive response efforts by the Chinese government,HIV/AIDS remains a major public health *** increasing burden of HIV/AIDS and comorbidities,the emergence of new HIV subtypes and/or circulating recombinant forms and drug mutations,the changing transmission networks.

关键词： HIV/AIDS injection immunodeficiency

A perspective on potassic and ultrapotassic rocks:Constraints on the Paleoproterozoic late to post-collisional event in the São Francisco paleocontinent

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Geoscience Frontiers 2022年第5期13卷 242-266页

作者： Samuel moreira Bersan AndréDanderfer Craig Storey Henrique Bruno Hugo moreira Francisco Abreu Cristiano Lana Leonardo Gonçalves Isabela nahas Universidade Federal de Ouro Preto Departamento de GeologiaCampus Morro do CruzeiroOuro PretoMG CEP 35400-000Brazil University of Portsmouth School of the EnvironmentGeography and GeosciencesBurnaby BuildingBurnaby RoadPortsmouth PO13QLUK Tektos Research Group UERJ-Rio de Janeiro State UniversityBrazil Sustain Geologia Belo HorizonteBrazil

The late-to post-collisional stage in orogenic systems is characterized by the coeval existence of bimodal potassic to ultrapotassic magmatic activity related to partial melting of an enriched lithospheric mantle together with crustal derived *** this paper,we present new whole rock geochemical analyses combined with zircon and titanite U–Pb and zircon Hf isotopic data from potassic to ultrapotassic rocks from six plutons that occur within the Archean Itacambira-Monte Azul block(BIMA),to discuss their petrogenesis and the tectonic implications for the São Francisco *** new U–Pb ages range from ca.2.06 Ga to 1.98 Ga and reveal long-lasting potassic magmatism within the BIMA,which is within the late-to-post-collisional stage of the São Francisco paleocontinent *** ultrapotassic rocks are compatible with a fluid-related metasomatized mantle source enriched by previous subduction events,whereas the potassic rocks are bimodal and have a transitional shoshonitic to A-type *** rocks have a hybrid nature,possible related to the mixing between the mafic potassic/ultrapotassic rocks and high temperature crustal melts of the Archean continental *** results also show an increase of within-plate signature towards the younger potassic *** participation of an important Archean crustal component in the genesis of these rocks is highlighted by the common and occasionally abundant occurrence of Archean inherited *** Hf isotopic record shows that most of the zircon inheritance has dominantly subchondriticεHf(t)values,which fits a crustal reworking derivation from a similar Eo-to Paleoarchean precursor ***,the presence of juvenile 2.36 Ga zircon inheritance in an ultrapotassic sample reveal the existence of a hidden reservoir that is somewhat similar to the described for the Mineiro Belt in southern São Francisco paleocontinent.

关键词： Late-to post-collisional Potassic-ultrapotassic rocks U–Pb dating São Francisco paleocontinent Rhyacian-Orosirian orogenic system

AnaLYSIS OF A FULLY DISCRETE FINITE ELEMENT METHOD FOR PARABOLIC INTERFACE PROBLEMS WITH NONSMOOTH INITIAL DATA

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Journal of Computational Mathematics 2022年第5期40卷 777-793页

作者： Kai Wang na Wang Department of Mathematics Southern University of Science and TechnologyShenzhen 518005China Applied and Computational Mathematics Division Beijing Computational Science Research CenterBeijing 100193China

This article concerns numerical approximation of a parabolic interface problem with general L 2 initial *** problem is discretized by a finite element method with a quasi-uniform triangulation of the domain fitting the interface,with piecewise linear approximation to the *** semi-discrete finite element problem is furthermore discretized in time by the k-step backward difference formula with k=1,...,*** maintain high-order convergence in time for possibly nonsmooth L 2 initial value,we modify the standard backward difference formula at the first k−1 time levels by using a method recently developed for fractional evolution *** error bound of O(t−k nτk+t−1 n h 2|log h|)is established for the fully discrete finite element method for general L 2 initial data.

关键词： Parabolic interface problem Finite element method Backward difference formulae Error estimate Nonsmooth initial data.

Two Hybrid Methods Based on Rough Set Theory for Network Intrusion Detection

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Journal of Harbin Institute of Technology(New Series) 2014年第6期21卷 22-27页

作者： na Jiao Dept.of Information Science and Technology East China University of Political Science and Law

In this paper,we propose two intrusion detection methods which combine rough set theory and Fuzzy C-Means for network intrusion *** first step consists of feature selection which is based on rough set *** next phase is clustering by using Fuzzy *** set theory is an efficient tool for further reducing *** C-Means allows the objects to belong to several clusters simultaneously,with different degrees of *** evaluate the performance of the introduced approaches,we apply them to the international Knowledge Discovery and Data mining intrusion detection *** the experimentations,we compare the performance of two rough set theory based hybrid methods for network intrusion *** results illustrate that our algorithms are accurate models for handling complex attack patterns in large *** these two methods can increase the efficiency and reduce the dataset by looking for overlapping categories.

关键词： rough set theory Fuzzy C-Means network security intrusion detection

Smoking and prostate cancer survival and recurrence

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Asian Journal of Andrology 2011年第6期13卷 787-788页

作者： Roberto L Muller Daniel M moreira Division of Urologic Surgery Department of Surgery and the Duke Prostate Center Duke University School of Medicine Durham NC 27710 USA Urology Section Veterans Affairs Medical Center Durham NC 27705 USA The Arthur Smith Institute for Urology North Shore Long Island Jewish Health System New Hyde Park NY USA

moking is associated with several major benign and malignant diseases, representing one of the most important modifiable risk factors. Among urothelial neoplasms, smoking is pivotal in tumor carcinogenesis, but its role in prostate cancer is still controversial. Many authors have failed to demonstrate an association between smoking and prostate cancer.

关键词： major enign malignant diseases iagnosis

Adult neurogenesis in the primate hippocampus

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Zoological Research 2023年第2期44卷 315-322页

作者： Ye Li na-na Xu Zhao-Zhe Hao Sheng Liu State Key Laboratory of Ophthalmology Zhongshan Ophthalmic CenterSun Yat-sen UniversityGuangdong Provincial Key Laboratory of Ophthalmology and Visual ScienceGuangzhouGuangdong 510060China Guangdong Province Key Laboratory of Brain Function and Disease GuangzhouGuangdong 510080China

Adult hippocampal neurogenesis(AHN) is crucial for learning,memory,and *** of AHN may lead to reduced cognitive abilities and neurodegenerative disorders,such as Alzheimer’s *** studies on rodent AHN have clarified the developmental and maturation processes of adult neural stem/progenitor ***,to what extent these findings apply to primates remains *** advances in next-generation sequencing technologies have enabled in-depth investigation of the transcriptome of AHN-related populations at single-cell ***,we summarize studies of AHN in *** suggest that neurogenesis is largely shared across species,but substantial differences also *** gene expression patterns in primates differ from those of *** with rodents,the primate hippocampus has a higher proportion of immature dentate granule cells and a longer maturation period of newly generated granule *** research on species divergence may deepen our understanding of the mechanisms underlying adult neurogenesis in primates.

关键词： Neural precursor cells Immature granule cells Sc-Rna-seq

Hepatitis B virus lineages in mammalian hosts:Potential for bidirectional cross-species transmission

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World Journal of Gastroenterology 2014年第24期20卷 7665-7674页

作者： Cibele R Bonvicino Miguel A moreira Marcelo A Soares Genetics Division Instituto Nacional de CancerRio de JaneiroRJ 20231-050Brazil Laboratório de Biologia e Parasitologia de Mamíferos Reservatórios Silvestres IOCFIOCRUZRio de JaneiroRJ 21045-900Brazil Genetics Department Universidade Federal do Rio de JaneiroRio de JaneiroRJ 21949-570Brazil

The hepatitis B virus(HBV)is a cosmopolitan infectious agent currently affecting over 350 million people worldwide,presently accounting for more than two billion *** addition to man,other hepatitis virus strains infect species of several mammalian families of the Primates,Rodentia and Chiroptera orders,in addition to *** mounting evidence of HBV infection in African,Asian and neotropical primates draws attention to the potential crossspecies,zoonotic transmission of these viruses to ***,recent evidence also suggests the humans may also function as a source of viral infection to other mammals,particularly to domestic animals like poultry and *** this review,we list all evidence of HBV and HBVlike infection of nonhuman mammals and discuss their potential roles as donors or recipients of these viruses to humans and to other closely-related species.

关键词： Hepatitis B Hepatitis B virus nonhuman host Cross-species transmission Hepatitis B virus

职前教师学科教学知识的认知:困境、原因与改进策略

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教师教育学报 2025年第1期12卷 20-27页

作者：郭学君林林李娜宁波大学教师教育学院浙江宁波315211 上海财经大学国际文化交流学院上海200433 华中师范大学数学与统计学学院湖北武汉430079

职前教师学科教学知识的认知包括学科知识认知与教学实践两个层面。研究基于9位职前教师的27次反思报告,运用质性研究方法,通过分析职前教师对学科知识的诠释、重组、呈现,探究职前教师学科知识认知与教学实践之间的关系,并阐释职前教... 详细信息

职前教师学科教学知识的认知包括学科知识认知与教学实践两个层面。研究基于9位职前教师的27次反思报告,运用质性研究方法,通过分析职前教师对学科知识的诠释、重组、呈现,探究职前教师学科知识认知与教学实践之间的关系,并阐释职前教师学科教学知识的认知困境与原因。研究发现,如果职前教师未能意识到学科知识的独立性和专业性,则很难恰当地将学科知识融入教学实践,以致教学实践中存在学科知识欠缺的现象。故教师培养者应补充相关的学科知识,以帮助职前教师形成合理、整体、全面的学科教学知识;职前教师应深化、重组学科知识认知,调整审视教学内容的视角并在教学实践中恰当地呈现学科知识。

关键词：职前教师学科教学知识学科知识认知教学实践反思报告