“DIRTY THEATRE” AND REFORM: HUAGUXI BEFORE AND AFTER 1949 IN HUNAN PROVINCE, CHINA

LI HUAN 아시아음악학회 2010 Asian Musicology Vol.16 No.-

Soft and Flexible Bilayer Thermoplastic Polyurethane Foam for Development of Bioinspired Artificial Skin

Li, Huan,Sinha, Tridib K.,Oh, Jeong Seok,Kim, Jin Kuk American Chemical Society 2018 ACS APPLIED MATERIALS & INTERFACES Vol.10 No.16

<P>Inspired by the epidermis-dermis composition of human skin, here we have simply developed a lightweight, robust, flexible, and biocompatible single-electrode triboelectric nanogenerator (S-TENG)-based prototype of bilayer artificial skin, by attaching one induction electrode with unfoamed skin layer of microcellular thermoplastic polyurethane (TPU) foam, which shows high-performance object manipulation [by responding differently toward different objects, viz., aluminum foil, balloon, cotton glove, human finger, glass, rubber glove, artificial leather, polyimide, poly(tetrafluoroethylene) (PTFE), paper, and wood], due to electrification and electrostatic induction during contact with the objects having different chemical functionalities. Comparative foaming behavior of ecofriendly supercritical fluids, viz., CO<SUB>2</SUB> over N<SUB>2</SUB> under variable temperatures (e.g., 130 and 150 °C) and constant pressure (15 MPa), have been examined here to pursue the soft and flexible triboelectric TPU foam. The foam derived by CO<SUB>2</SUB> foaming at 150 °C has been prioritized for development of S-TENG. Foam derived by CO<SUB>2</SUB> foaming at 130 °C did not respond as well due to the smaller cell size, higher hardness, and thicker skin. Inflexible N<SUB>2</SUB>-derived foam was not considered for S-TENG fabrication. Object manipulation performance has been visualized by principal component analysis (PCA), which shows good discrimination among responses to different objects.</P> [FIG OMISSION]</BR>

PEDOT-PSS-Coated FeFe(CN)6 Composite Cathode for Lithium-ion Batteries with the Improved Electrochemical Performances

Lihuan Xu,Jiaojiao Ma,Pengju Guo,Chang Su 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2019 NANO Vol.14 No.9

Prussian-blue type FeFe(CN)6 nanocrystals with perfect nanocubic morphology were prepared by a facile hydrolytic precipitation method using Fe(CN)3- 6 as a single iron-source. The resulting FeFe(CN)6 nanocrystals have subsequently been encapsulated within a mixed electronically and ionically conducting polystyrene sulfonic acid (PSS)-doped poly(3,4-ethylenedioxythiophene) (PEDOT) (PEDOT-PSS) with ethylene glycol (EG) as the polar solvent to obtain a high electrical conducting organic–inorganic nanohybrid. The FeFe(CN)6/PEDOT-PSS nanohybrid offers discharge capacity of 106.3 mAh · g -1, which is improved compared to that of the naked FeFe(CN)6(94.4 mAh · g -1). Also, it demonstrated the improved capacity retention and rate capability, which makes it a promising way for high performance Li-ion batteries for energy storage application.

Antibacterial Graphene Oxide/Chitosan Composite Compression Garment Fabric

Lihuan Zhao,Siyu Zhang,Yuwen Wang,Jun Li,Yanyan Li,Yujie Yang,Silu Liu 한국섬유공학회 2022 Fibers and polymers Vol.23 No.7

To solve issues related to hypertrophic scars, such as the risk of bacterial infections, due to the wearing ofcompression garments for extended periods of time, we prepared an antibacterial compression garment fabric (CGF) with agraphene oxide (GO)/chitosan (CS) composite. First, the GO/CS composite was prepared and used as an antibacterial agentfor antibacterial finishing of the CGF. Then, silane coupling agent γ-(methacryloxy) propyl trimethoxysilane (KH570) wasused to modify the GO/CS-finished CGF to improve the washing fastness properties of the antibacterial fabric. Finally, thedurability, physical properties, and biological safety of the antibacterial finished fabrics were studied. We found that the GO/CS composite was successfully synthesized, and the antibacterial finished fabrics were endowed with antibacterial activityagainst both gram-negative bacteria Esherichia coli (E. coli, AATCC 6538) and gram-positive bacteria Staphylococcusaureus (S. aureus, AATCC 25922), with bacteriostatic rates of 92.09 % and 99.33 %, respectively. Moreover, the durability ofthe finished fabric was effectively improved by KH570 treatment. One disadvantage was that the comfort of the antibacterialfinished fabric was affected to a certain extent; however, biological experiments showed that the CGF finished by GO/CS/KH570 showed no potential cytotoxicity on the human body and did not cause skin irritation. The prepared antibacterialfinished CGF based on the GO/CS/KH570 composite could effectively reduce the bacterial infection rates of patients wearingcompression garments, which could significantly alleviate patient suffering.

Optimization of coagulation–flocculation process for papermaking-reconstituted tobacco slice wastewater treatment using response surface methodology

Yufeng Wang,Lihuan Mo,Kefu Chen,Jun Li,Jun Xu 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.2

A coagulation–flocculation process was used to treat papermaking-reconstituted tobacco slicewastewater with polyaluminium chloride (PAC) as coagulant and a cationic polyacrylamide (CPAM)as flocculant. To maximize the reduction of chemical oxygen demand (COD) and color, the jar tests werecarried out in the experiments and response surface methodology (RSM) was applied to optimize theprocess. A central composite design, i.e., a standard approach in RSM, was used to evaluate the effectsand interactions of three factors, i.e. PAC dosage, CPAM dosage and pH on the treatment efficiency. Results revealed that the maximum reduction of COD and color could be achieved at an optimalconditions, i.e., PAC = 715 mg/L, CPAM = 4.8 mg/L and pH = 6.6, from which the reduction of COD andcolor were 67.8% and 77.7%, respectively. The study also showed that the regression equations could beused as the theoretical basis for coagulation–flocculation process of papermaking-reconstituted tobaccoslice wastewater. They will be very helpful to flexibly select the appropriate process parameters in theengineering applications

Effect of Iron Tailings as Fine Aggregate and Mineral Admixture on Strength and Microstructure of Cement Mortar

Lijuan Kong,Shuheng Xie,Caihui Wang,Lihuan Wang 한국콘크리트학회 2023 International Journal of Concrete Structures and M Vol.17 No.4

To investigate the application of iron tailings in cement-based materials as fine aggregate and mineral admixture, six iron tailings sands were selected from different places of origin, and the methods of acid and alkali activation were adopted to increase the activity of tailings powder. The strength of mortar was evaluated and the composition and microstructure were analyzed to explore the mechanism. The experimental results show that iron tailings sands had little adverse effect on the mortar strength, and there was a maximum increase of 13.2% in 28-day compressive strength compared with that of river sand mortar. The hardness values of all the iron tailings sand and the interfacial transition zone (ITZ) around them were higher than that of natural river sand, but their Ca/Si ratios in the ITZ was lower, indicating a chemical reaction occurred between the iron tailings and cement paste. Generally, the iron tailings sand with higher SiO2 content and finer particles tend to have higher activity. In addition, the pozzolanic activity of iron tailings powder could be greatly promoted by chemical activation, especially by acid activation. The activity index of cement mortar with unactivated iron tailings powder was only 63% at 28 days, whereas that of acid-activated and compound-activated samples reached up to 93%, and the heights of the maximum heat flow peak of these samples were even higher than that of the control sample without iron tailings powder, and the time to reach the peak was in some advance, moreover their impedance parameters were close to the control sample.

Transcriptome analysis of colchicine-induced tetraploid Kiwifruit leaves with increased biomass and cell size

Zhu Yanyan,Tang Wei,Tang Xiaofeng,Wang Lihuan,Li Wei,Zhang Qian,Li Mingzhang,Fang Congbing,Liu Yongsheng,Wang Songhu 한국식물생명공학회 2021 Plant biotechnology reports Vol.15 No.5

Colchicine-induced polyploidization has been extensively utilized in plant-breeding programs to increase biomass and overall yield of various crop species. Chromosome doubling usually increases the plant size and cell size. However, the underly- ing mechanisms remain elusive. In this study, we showed that 0.1% colchicine is an optimized concentration for inducing tetraploidization of Actinidia chinensis var. chinensis ‘Hongyang’, a commercially important diploid kiwifruit cultivar. The tetraploid plants showed increased plant height, leaf size, and biomass, as compared with the corresponding diploid plants. Scanning electron microscopy and histological analysis indicated that the leaf cell size was significantly increased in the tetraploid plants. Our further transcriptome analysis revealed the 5922 differentially expressed genes between the diploid and tetraploid plants. Gene Ontology analysis enriched the cell wall-related genes, including the pectin methylesterases (PMEs) and expansins (EXPs), both of which play a critical role in cell wall loosening and extension. The increased expression of PME and EXP genes might contribute to the increased cell size in the tetraploid plants. Together, our work indicated that tetraploidization increases the organ and cell size in kiwifruit, possibly by enhancing the cell wall extensibility.

Standardized Treatment and Shortened Depression Course can Reduce Cognitive Impairment in Adolescents With Depression

Penghui Cao,Junjie Tan,Xuezhen Liao,Jinwei Wang,Lihuan Chen,Ziyan Fang,Nannan Pan 대한소아청소년 정신의학회 2024 소아청소년정신의학 Vol.35 No.1

Objectives: This study aimed to explore the influence of depression severity, disease course, treatment status, and other factors on cognitive function in adolescents with depressive disorders. Methods: Participants who met the inclusion criteria were enrolled in the study. Sociodemographic data of each participant were recorded, including age, sex, and family history of mental disorders. Zung’s Self-Rating Depression Scale was used to assess depression status in adolescents. Moreover, P300 and mismatch negativity (MMN) were used to objectively evaluate the participants’ cognitive function. Results: Only 26.8% of the adolescents with depression received standard antidepressant treatment. The latencies of N2 (267.80±23.34 ms), P3 (357.71±32.09 ms), and MMN (212.10±15.61 ms) in the adolescent depression group were longer than those in the healthy control group (p<0.01). Further analysis revealed that the latency of MMN was extended with increased levels of depression in adolescents. The MMN latency was short in participants with depression receiving standardized treatment. Furthermore, the latency of MMN was positively correlated with the severity and duration of depression (correlation coefficients were 0.465 and 0.479, respectively) (p<0.01). Conclusion: Receiving standardized treatment and shortening the course of depression can reduce cognitive impairment in adolescents with depression.

GTP Binding Is Required for SEPT12 to Form Filaments and to Interact with SEPT11

Xiangming Ding,Wenbo Yu,Ming Liu,ShuQing Shen,Fang Chen,Lihuan Cao,Bo Wan,Long Yu 한국분자세포생물학회 2008 Molecules and cells Vol.25 No.3

Septins are a family of filament-forming GTP-binding proteins involved in a variety of cellular process such as cytokinesis, exocytosis, and membrane dynamics. Here we report the biochemical and immunocytochemical characterization of a recently identified mammalian septin, SEPT12. SEPT12 binds GTP in vitro, and a mutation (Gly56 to Asn) in the GTPbinding motif abolished binding. Immunocytochemical analysis revealed that wild-type SEPT12 formed filamentous structures when transiently expressed in Hela cells whereas SEPT12G56A generated large aggregates. In addition, wild-type SEPT12 failed to form filaments when coexpressed with SEPT12G56A. We also observed that GTP-binding by SEPT12 is required for interaction with SEPT11 but not with itself.