A5068530607- Luminescence Properties of Advanced Materials
- Microwave Dielectric Ceramics Synthesis
- Perovskite Materials and Applications
- Solid State Laser Technologies
- Surfactants and Colloidal Systems
- Chemical and Physical Properties in Aqueous Solutions
- Complex Network Analysis Techniques
- Crystallization and Solubility Studies
- Enhanced Oil Recovery Techniques
- Opinion Dynamics and Social Influence
- Ionic liquids properties and applications
- Advanced Photocatalysis Techniques
- Inorganic Fluorides and Related Compounds
- Petroleum Processing and Analysis
- Luminescence and Fluorescent Materials
- Photorefractive and Nonlinear Optics
- Crystallography and molecular interactions
- X-ray Diffraction in Crystallography
- Lipid Membrane Structure and Behavior
- Ferroelectric and Piezoelectric Materials
- Advanced ceramic materials synthesis
- E-commerce and Technology Innovations
- Bioinformatics and Genomic Networks
- Social Media and Politics
- Electrochemical Analysis and Applications
National Institute for Materials Science
2020-2021
Northeastern University
2019-2021
Universidad del Noreste
2021
Liaocheng University
2011-2014
The rheological properties of aqueous solutions a cationic surfactant, 3-hexadecyloxy-2-hydroxypropyl trimethyl ammonium bromide (R16HTAB), and its mixed solution system with sodium salicylate (NaSal) have been studied by using steady state frequency sweep measurements. microstructure the formed wormlike micelles has ascertained transmission electronic microscopy 1H NMR technology. effects surfactant concentration, added salt, temperature different counterions on viscoelastic systematically...
Systematic crystallization of KLn(MoO4)2 double molybdate micro/nanocrystals was achieved in this work for the family lanthanide elements (excluding Pm) and Y via hydrothermal reaction under optimized conditions pH = 7, Mo/Ln molar ratio R 5 200 °C, with which intrinsic influence contraction on phase preference, crystallite morphology (size/shape) crystal structure clearly revealed. Extended synthesis also produced KLa1-xEux(MoO4)2 (KLM:xEu) KY1-yEuy(MoO4)2 (KYM:yEu) red phosphors, detailed...
Layered hydroxide sulfate (Ln2(OH)4SO4·2H2O) was employed as a new template for (La0.97Yb0.02RE0.01)F3 nanocrystal synthesis via fluorination (RE=Ho, Er), with the course of phase/morphology evolution being studied in detail systematically varying reaction temperature (up to 180 °C) and duration 24 h). It shown that phase conversion can be completed by at room h or °C ∼2 hexagonal structure LaF3:Yb/RE preferentially develops ab instead (00l) basal planes. The upconversion (UC) performance...
Tetragonal structured LaVO4 (t-LaVO4) is superior to its thermodynamically stable monoclinic polymorph for luminescence, but difficult synthesize without using chelating molecules/ions. With Ln2(OH)4SO4·2H2O layered hydroxide as an original template phase conversion, well-crystallized t-(La0.95Eu0.05)VO4 nanocrystals (∼40–80 nm) of favorable dispersion and size uniformity were directly produced via hydrothermal reaction at 200 °C 24 h any organic additive. Luminescence analysis showed that...
The role of Zr substitution in structure modification for a series garnet-type Li<sub>5+2x</sub>La<sub>3</sub>(Ta<sub>1−x</sub>Zr<sub>x</sub>)<sub>2</sub>O<sub>12</sub>:Eu phosphors was identified, with which the observed luminescence behaviors Eu<sup>3+</sup> were successfully deciphered.
Abstract Garnet‐type Li 6 Ca(La 0.97 Yb 0.02 RE 0.01 ) 2 Nb O 12 (RE = Ho, Er, Tm) new phosphors were successfully synthesized via solid reaction at 900°C for 5 hours, whose course of phase evolution, macroscopic/local crystal structure and up‐/down‐conversion (UC/DC) photoluminescence clarified. Mechanistic study materials characterization attained XRD, Rietveld refinement, DTA/TG, electron microscopy (FE‐SEM/TEM), Raman/reflectance/fluorescence spectroscopies. The shown to exhibit UC...
Node embedding is a representation learning technique that maps network nodes into lower-dimensional vector space. Embedding space can benefit analysis tasks, such as community detection, link prediction, and influential node identification, in both calculation richer application scope. In this paper, we propose two-step embedding-based solution for the social influence maximization problem (IMP). The employs revised network-embedding algorithm to map input first step. second step, clusters...
As a more complicated network model, multilayer networks provide better perspective for describing the multiple interactions among social in real life. Different from conventional community detection algorithms, algorithms can identify underlying structures that contain various intralayer and interlayer relationships, which is of significance remains challenge. In this paper, aiming at instability label propagation algorithm (LPA), an improved based on SH-index (SH-LPA) proposed. By...
In the crystal structure of title compound, C(20)H(44)NO(2) (+)·Br(-), cation and anion are connected via an O-H⋯Br hydrogen bond, forming ionic pair. The is disordered over two conformations related by a mirror plane, situated on plane so that asymmetric unit contains half long alkyl chain in adopts all-trans conformation. packing exhibits weak inter-molecular C-H⋯O inter-actions.
用稳态和动态流变学方法研究了 3-十六烷氧基-2-羟丙基三甲基溴化铵(R 16 HTAB)单纯以及水杨酸钠(NaSal)存在下溶液的流变特性.无盐体系中,在测定的浓度范围内,表面活性剂与零剪切黏度呈指数关系( η 0 ∝ c 2.53 ).水杨酸钠的加入促进了体系由球状向蠕虫状胶束转化.Cox-Merz规则和Cole-Cole图证明,混合体系生成了蠕虫状胶束.与传统的CTAB比较,无论水杨酸钠存在与否,R HTAB水溶液的流变性能均较好,这主要归因于羟丙基基团的插入,使得R HTAB和NaSal分子之间形成氢键连接,生成了更加稳定的三维网络结构.应用冷冻蚀刻电子显微镜技术进一步证实了体系中蠕虫状胶束的存在.
This paper focuses on the research of diversified e-commerce activities in platform, mapping various business into framework resource allocation. When a certain number users access platform concurrently, system allocates resources. abandons traditional simple filtering mode to analyze historical data abstracts user commodity binary network and divides communities according attribute information commodities purchase logs users. By analyzing community users, we can allocate resources...