Dual-Mode Luminescence with Broad Near UV and Blue Excitation Band from Sr₂CaMoO₆:Sm³⁺ Phosphor for White LEDs

Wang, Lili,Noh, Hyeon Mi,Moon, Byung Kee,Park, Sung Heum,Kim, Kwang Ho,Shi, Jinsheng,Jeong, Jung Hyun American Chemical Society 2015 The Journal of Physical Chemistry Part C Vol.119 No.27

<P>Dual-mode excitation properties were introduced in Sm<SUP>3+</SUP> doped Sr<SUB>2</SUB>CaMoO<SUB>6</SUB> prepared by a high temperature solid state reaction technique. Two ways are available to generate white light in the single-component phosphor activated by Sm<SUP>3+</SUP> ions. Warm white light can be obtained from Sr<SUB>1.995</SUB>Sm<SUB>0.005</SUB>CaMoO<SUB>6</SUB> phosphor pumped by 380 or 411 nm excitation energy. The full visible spectral emission of the single-phase phosphor comes from the high and low level emission lines of Sm<SUP>3+</SUP> ions as well as the intrinsic luminescence of MoO<SUB>6</SUB> group. It is also competitive as yellow-emitting phosphor for blue pumped white LEDs and gives three emission bands at 567, 603, and 650 nm, presenting yellow luminescence upon 466 nm radiation. The 650 nm red emission band corresponding to <SUP>4</SUP>G<SUB>5/2</SUB> → <SUP>6</SUP>H<SUB>9/2</SUB> transition of Sm<SUP>3+</SUP> can make its color rendering index better. The excellent photoluminescence of Sr<SUB>2</SUB>CaMoO<SUB>6</SUB> is related to the partial tilting CaO<SUB>6</SUB> octahedral and the lowered symmetry were confirmed by General Structure Analysis System. Band gap of Sr<SUB>2</SUB>CaMoO<SUB>6</SUB> estimated from the diffuse reflection spectra and also calculated by CASTEP mode shows its semiconducting character. All the results show that the Sr<SUB>2–<I>x</I></SUB>Sm<SUB><I>x</I></SUB>CaMoO<SUB>6</SUB> phosphors have considerable potential for applications in near UV LED or pumped by blue LED chip.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jpccck/2015/jpccck.2015.119.issue-27/acs.jpcc.5b02828/production/images/medium/jp-2015-02828d_0011.gif'></P>

AHP Based Quantitative Evaluation Index System of Teacher's Research Performance in the University

Lili Wang,Hengfu Wen,Yang Liu 보안공학연구지원센터 2016 International Journal of Multimedia and Ubiquitous Vol.11 No.7

With the advent of the information society and the big data era, the content of quantitative evaluation of teacher's research performance in the university constantly goes deeper, and the method of it further enriches as well. In this paper, our method references eight university ranking index systems as a source of information, and then adopts analytic hierarchy process(AHP) method to obtain a quantitative Evaluation Index System of Teacher's research Performance and to determine the weight of each index. As a result, A set of indicator system was established, including 1 first order indicator, 2 second order indicators as well as 27 third order indicators, among which, scientific research is considered as the first order indicator.

Raspberry Ketone Protects Rats Fed High-Fat Diets Against Nonalcoholic Steatohepatitis

Lili Wang,Xianjun Meng,Fengqing Zhang 한국식품영양과학회 2012 Journal of medicinal food Vol.15 No.5

The protective effect of raspberry ketone against nonalcoholic steatohepatitis (NASH) was tested by using a high-fat diet-induced NASH model, and its mechanism was explored. Forty Sprague–Dawley rats with a 1:1 male to female ratio were randomly divided into five groups: the normal control (NC) group (n = 8) fed normal diet for 8 weeks, the model control (MC) group (n = 8) fed high-fat diet (82% standard diet, 8.3% yolk powder, 9.0% lard, 0.5% cholesterol, and 0.2%sodium taurocholate), and the raspberry ketone low-dose (0.5%) (RKL) group (n = 8), the raspberry ketone middle-dose (1%)(RKM) group (n = 8), and the raspberry ketone high-dose (2%) (RKH) group (n = 8) fed high-fat diet for 4 weeks. After 8weeks of experiment, all the rats were sacrificed, and blood lipid parameters (total cholesterol [TC], triglycerides [TG], highdensity lipoprotein cholesterol [HDL-C], and low-density lipoprotein cholesterol [LDL-C]), liver function parameters (serum alanine aminotransferase [ALT], aspartate aminotransferase [AST], and alkaline phosphatase [ALP]), leptin (LEP), free fatty acid (FFA), tumor necrosis factor a (TNF-a), blood glucose (GLU), and insulin (INS) with calculated INS resistance index (IRI) and INS-sensitive index (ISI) were measured in rats. Therefore, we determined the peroxisome proliferator-activated receptor (PPAR)-a activity in liver homogenate and the levels of low-density lipoprotein receptor (LDLR), high-sensitivity C-reactive protein (hs-CRP), adiponection (APN), superoxide dismutase, and malondialdehyde (MDA). The liver tissues of rats in each group were imaged by electron microscopy with hematoxylin–eosin as the staining agent. The levels of TG, TC,LDL-C, ALT, AST, ALP, GLU, INS, IRI, FFA, LEP, TNF-a, MDA, and hs-CRP of MC rats were significantly increased (P < .05, P < .01). Therefore, the levels of HDL-C, ISI, PPAR-a, LDLR, and APN were significantly decreased (P < .05,P < .01). Compared with the MC group, each parameter in the RKL, RKM, and RKH groups was significantly improved (P < .05, P < .01). Thus raspberry ketone was an effective intervention for NASH in rats. It was believed that raspberry ketone had a dual effect of liver protection and fat reduction, and the mechanism was probably mediated by alleviation of fatty degeneration of liver cells, decreased liver inflammation, correction of dyslipidemia, reversal of LEP and INS resistance, and improved antioxidant capacity.

Molecular and functional characterization of the adiponectin (AdipoQ) gene in goat skeletal muscle satellite cells

Wang, Linjie,Xue, Ke,Wang, Yan,Niu, Lili,Li, Li,Zhong, Tao,Guo, Jiazhong,Feng, Jing,Song, Tianzeng,Zhang, Hongping Asian Australasian Association of Animal Productio 2018 Animal Bioscience Vol.31 No.8

Objective: It is commonly accepted that adiponectin binds to its two receptors to regulate fatty acid metabolism in adipocytes. To better understand their functions in the regulation of intramuscular adipogenesis in goats, we cloned the three genes (adiponectin [AdipoQ], adiponectin receptor 1 [AdipoR1], and AdipoR2) encoding these proteins and detected their mRNA distribution in different tissues. We also determined the role of AdipoQ in the adipogenic differentiation of goat skeletal muscle satellite cells (SMSCs). Methods: SMSCs were isolated using 1 mg/mL Pronase E from the longissimus dorsi muscles of 3-day-old female Nanjiang brown goats. Adipogenic differentiation was induced in satellite cells by transferring the cells to Dulbecco's modified Eagle's medium supplemented with an isobutylmethylxanthine, dexamethasone and insulin cocktail. The pEGFP-N1-AD plasmid was transfected into SMSCs using Lipofectamine 2000. Expression of adiponectin in tissues and SMSCs was detected by quantitative polymerase chain reaction and immunocytochemical staining. Results: The three genes were predominantly expressed in adipose and skeletal muscle tissues. According to fluorescence and immunocytochemical analyses, adiponectin protein expression was only observed in the cytoplasm, suggesting that adiponectin is localized to the cytoplasm of goat SMSCs. In SMSCs overexpressing the AdipoQ gene, adiponectin promoted SMSC differentiation into adipocytes and significantly (p<0.05) up-regulated expression of AdipoR2, acetyl-CoA carboxylase, fatty-acid synthase, and sterol regulatory element-binding protein-1, though expression of CCAAT/enhancer-binding $protein-{\alpha}$, peroxisome proliferator-activated receptor ${\gamma}$, and AdipoR1 did not change significantly. Conclusion: Adiponectin induced SMSC differentiation into adipocytes, indicating that adiponectin may promote intramuscular adipogenesis in goat SMSC.

CONGRUENCES ON ABUNDANT SEMIGROUPS WITH QUASI-IDEAL S-ADEQUATE TRANSVERSALS

Wang, Lili,Wang, Aifa Korean Mathematical Society 2014 대한수학회논문집 Vol.29 No.1

In this paper, we give congruences on an abundant semigroup with a quasi-ideal S-adequate transversal $S^{\circ}$ by the congruence pair abstractly which consists of congruences on the structure component parts R and ${\Lambda}$. We prove that the set of all congruences on this kind of semigroups is a complete lattice.

예술디자인학과 학생의 그릿과 진로준비행동 관계에서 회복탄력성의 매개효과

Lili Zhang,Yu Wang,고영춘 국제인문사회연구학회 2024 Studies on Humanities and Social Sciences (SHSC) Vol.6 No.1

Mediating Effect of Resilience in the Relationship Between Grit and Career Preparation Behavior of Art Design Students Lili Zhang,** Yu Wang,*** & Youngchun Ko**** Abstract: This study is to explore the mediating effect of resilience in the influence of grit on career preparation behavior for students in the department of art design. The subjects of the study are 524 students in the department of art design at H and D universities in Heilongjiang Province, China, and reliability, correlation, and regression analysis are conducted using the SPSS 25 program. The relationship among grit, resilience, and career preparation behavior is explored for university students in the department of art design. It is confirmed that resilience partially mediated grit's influence on career preparation behavior. Therefore, in order to promote career preparation behavior of students in the department of art design, university members should create a psychological and material environment for university students so that they can improve their grits and cultivate resilience. Key Words: Grit, Resilience, Career Preparation Behavior, Mediating Effect, Department of Art Design □ 접수일: 2024년 1월 31일, 수정일: 2024년 2월 10일, 게재확정일: 2024년 2월 20일* 이 논문은 주저자인 장려려의 박사학위논문을 발췌하여 수정・보완을 한 것임. ** 주저자, 세한대학교 대학원 교육학과 박사과정(First Author, Doctoral Course, Sehan Univ., Email: hxcizhanglili@126.com)*** 공동저자, 세한대학교 대학원 교육학과 박사과정(Co-author, Doctoral Course, Sehan Univ., Email: 342049496@qq.com)**** 교신저자, 세한대학교 교직과/ 대학원 교육학과 교수(Corresponding Author, Professor, Sehan Univ., Email: ycko@sehan.ac.kr)

Impacts of C₆₀-Ionic Liquids (ILs) Interactions and IL Alkyl Chain Length on C₆₀ Dispersion Behavior: Insights at the Molecular Level

Wang, Zhuang,Tang, Lili,Wang, Degao Korean Chemical Society 2014 Bulletin of the Korean Chemical Society Vol.35 No.9

Mechanisms underlying the impacts of interactions between carbon nanoparticles (CNPs) and ionic liquids (ILs) on the physicochemical behavior of CNPs need to be more full worked out. This manuscript describes a theoretical investigation at multiple levels on the interactions of fullerene $C_{60}$ with 21 imidazolium-based ILs of varying alkyl side chain lengths and anionic types and their impacts on $C_{60}$ dispersion behavior. Results show that ${\pi}$-cation interaction contributed to mechanism of the $C_{60}$-IL interaction more than ${\pi}$-anion interaction. The calculated interaction energy ($E_{INT}$) indicates that $C_{60}$ can form stable complex with each IL molecule. Moreover, the direction of charge transfer occurred from IL to $C_{60}$ during the $C_{60}$-IL interaction. Quantitative models were developed to evaluate the self-diffusion coefficient of $C_{60}$ ($D_{fullerene}$) in bulk ILs. Three interpretative molecular descriptors (heat of formation, $E_{INT}$, and charge) that describe the $C_{60}$-IL interactions and the alkyl side chain length were found to be determinants affecting $D_{fullerene}$.

Development of High-Current Sheet Beam Cathodes for Terahertz Sources

Lili Li,Yiman Wang,Wei Liu,Yanchun Wang,Jinshu Wang,Srivastava, A.,Jin-Kyu So,Gun-Sik Park IEEE 2009 IEEE transactions on electron devices Vol.56 No.5

<P>Generation of a sheet beam directly from a scandia-doped dispenser cathode has been investigated and optimized by means of beam-profile simulations and measurements. Rectangular beams 600 mum wide and 100 mum thick with current densities over 50 A/cm<SUP>2</SUP> have been generated. The beams are stable for at least several hundred hours with the cathodes operating at 950degC<SUB>b</SUB>, making them promising candidates for application in the next generation of terahertz vacuum electron devices such as a 0.5-THz superradiant Smith-Purcell radiation source.</P>

MiR-370-3p aggravates blood–brain barrier injury and neuron apoptosis by targeting SMURF1 to activate the TLR4/MyD88/NF-κB signaling in sepsis-associated encephalopathy

Wang Neng,Zhong Dan,Lin Jie,Ye Mei,Chen Yu,Wang Lili,Chen Mei,Luo Cong 대한독성 유전단백체 학회 2023 Molecular & cellular toxicology Vol.19 No.3

Background Sepsis-associated encephalopathy (SAE) is characterized by blood–brain barrier (BBB) disruption, neuron apoptosis and infl ammation. Studies show that miR-370-3p can be a new diagnostic biomarker for SAE. Objective This study aims to investigate the role of miR-370-3p in SAE and the underlying mechanism. Result An in vitro model of BBB disruption was established in brain microvascular endothelial cells (BMECs) with lipopolysaccharide (LPS). The expression level of RNAs was tested via RT-qPCR. Protein levels were detected by western blotting. Annexin V/PI double staining and CCK-8 assays were conducted to assess the apoptosis and viability of brain microvascular endothelial cells (BMECs). The migration of BMECs was detected by Transwell assay. BBB permeability analysis was performed to assess the relative permeability coeffi cient of BMECs. The in vitro barrier integrity was detected by trans-epithelial/ endothelial electrical resistance (TEER). The binding between miR-370-3p and SMAD specifi c E3 ubiquitin protein ligase 1 (SMURF1) was identifi ed by luciferase reporter assay. In this study, miR-370-3p was upregulated in LPS-treated BMECs. MiR-370-3p knockdown alleviated LPS-induced BBB disruption and apoptosis of BMECs, as well as recovered cell viability and migration. SMURF1 was directly targeted by miR-370-3p. SMURF1 silencing reversed the eff ects of miR-370-3p defi ciency in LPS-stimulated BMECs. Moreover, miR-370-3p activated the TLR4/MyD88/NF-κB signaling via regulating SMURF1 in LPS-stimulated BMECs. Conclusion MiR-370-3p aggravates BBB disruption and neuron apoptosis by targeting SMURF1 to activate the TLR4/ MyD88/NF-κB signaling in SAE.

Synthesis, Characterization, and Dyeing Assessment of Reactive Dyes Containing a Benzsulfonamide Moiety

Lili Yang,Zhenxiang Xu,Hongqi Li,Cuiying Wang,Yunqin Wang,Congcong Lu 한국섬유공학회 2021 Fibers and polymers Vol.22 No.4

A new dye intermediate and novel reactive dyes containing both azo and benzsulfonamide auxochromic groupswere synthesized. Their structures were characterized by 1H-NMR, 13C-NMR, MS, IR, and UV-Vis spectral analysis. Thesynthesized dyes were applied to dyeing of cotton fabrics and their dyeing parameters were assessed. The new dyes exhibitedimproved substantivity and fixation property on cotton fabrics compared with the dye C.I. Reactive Black 5 (RB5). Themaximum exhaustion and total fixation values of the reactive dyes appeared when 2 % owf of the dye concentration wasused. The wash fastness and rub fastness of the new dyes reached up to 4 grade and 4-5 grade, respectively. In addition, theyshowed excellent fastness to light. These new dyes seem to be promising candidates for application to dyeing of cotton fibers.