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Synthesis and Liquid Crystalline Behavior of Side Chain Liquid Crystalline Polymers Containing Triphenylene Discotic Mesogens with Different Length Flexible Spacers

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Chinese Journal of Polymer Science 2015年第9期33卷 1245-1259页

作者： jian-feng ban 陈盛张海良 Key Laboratory of Polymeric Materials and Application Technology of Hunan Province Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province College of Chemistry Xiangtan University

A series of side chain liquid crystalline polymers （SCLCPs） containing triphenylene （Tp） units in the side chains, denoted as PMTS （without spacer） and PMTnS （n = 2, 3, 4, 6, which is the number of the methylene units between the main chain and Tp moieties in the side chains）, with different lengths of spacers were synthesized through conventional free radical polymerization. The chemical structures of the monomers were confirmed by 1H/IaC-NMR, and the phase behaviors were examined by differential scanning calorimetry （DSC）, polarized optical microscopy （POM） and wide-angle X-ray diffraction （1D and 2D WAXD）. The molecular characterization of the polymers was performed with 1H-NMR, gel permeation chromatography （GPC） and thermogravimetric analysis （TGA）. The phase behaviors of the polymers have been investigated by a combination of techniques including DSC, POM, 1D and 2D WAXD. The results showed that the length of spacer has significant effects on the LC phase behavior of polymers. For PMTS and PMT2S, they displayed the columnar phase developed by the Tp moieties and the main chain as a whole due to the strong coupling effect of the Tp moieties and the main chain. For the PMT3S, PMT4S and PMT6S, they formed the symmetry hexagonal columnar （~n） phase owing to the decoupling effect. All of these indicated that the ＂decoupling effect＂ or ＂coupling effect＂ depended on the length of spacers, leading to the different LC phase formation mechanism.

关键词： Liquid crystalline polymer Triphenylene Flexible spacer Phase behavior Columnar phase.

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含柔性链超分散剂对SF/PP木塑复合材料结构和性能的影响

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高分子材料科学与工程 2011年第1期27卷 84-87页

作者：刘婷陆绍荣王一靓班建峰阳志有桂林理工大学有色金属材料及其加工新技术教育部重点实验室广西桂林541004

以马来酸酐(MA)、聚乙二醇(PEG)、烯丙基磺酸钠(SAS)等为原料,通过自由基共聚合成了含柔性链且具有两亲结构的水溶性超分散剂。研究了复合材料的力学性能、热性能、晶型结构和微观结构,探讨了复合材料的界面增容机理。结果表明,当超分... 详细信息

以马来酸酐(MA)、聚乙二醇(PEG)、烯丙基磺酸钠(SAS)等为原料,通过自由基共聚合成了含柔性链且具有两亲结构的水溶性超分散剂。研究了复合材料的力学性能、热性能、晶型结构和微观结构,探讨了复合材料的界面增容机理。结果表明,当超分散剂的用量为3%(质量分数,下同)时,复合材料的冲击强度达22.09 kJ/m2,比未经超分散剂处理的复合材料提高了40%,材料的结晶度也有所提高,但晶型仍以α-PP为主。

关键词：剑麻纤维聚丙烯超分散剂木塑复合材料

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A novel active-passive protection strategy endows carbonyl iron with excellent intelligent anti-corrosion and microwave absorption dual functional characteristics

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Nano Research 2025年第1期18卷 487-500页

作者： Wei Tian Quanyuan feng Linbo Zhang Yinfan Liu Xian jian Longjiang Deng Institute of Microelectronics School of Information Science and TechnologySouthwest Jiaotong UniversityChengdu 611756China National Engineering Researching Centre of Electromagnetic Radiation Control Materials Key Laboratory of Multi-Spectral Absorbing Materials and Structures of Ministry of EducationState Key Laboratory of Electronic Thin Films and Integrated DevicesSchool of Electronic Science and EngineeringUniversity of Electronic Science and Technology of ChinaChengdu 611731China School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731China The Yangtze Delta Region Institute(Huzhou)&School of Electronic Science and Engineering University of Electronic Science and Technology of ChinaHuzhou 313001China

Carbonyl iron absorbers(CI)face significant challenges in practical applications,such as corrosion,interface bonding failure,detachment,and high maintenance ***,we have developed intelligent self-healing technology based on proactive/passive mechanisms via in situ synthesis of self-healing factors(polydopamine/benzotriazole(PDA/BTA))and physical barrier layers(SiO_(2)/1,1,1,3,3,3-hexamethyl disilazane,SiO_(2)/HMDS)to enhance corrosion resistance,while also being compatible with efficient microwave absorption *** unique multiscale structure gives full play to the utilization of the roles of each functional layer,including the intelligent self-healing features of PDA/BTA,physical shielding and spatial confinement characteristics of SiO_(2)/HMDS,and magnetic-dielectric synergistic mechanism resulted from the good impedance matching characteristics,the conduction loss,the interfacial polarization loss and natural *** asfabricated composites achieved an exceptional minimum reflection loss value of-55.4 dB at 10.7 GHz and the effective absorption band of 7.6 ***,it still exhibits obvious self-healing and corrosion resistance characteristics after 360 h corrosion treatment,ascribed to the self-healing mechanism of PDA/BTA and the blocking intervention effect of SiO_(2)/*** work is considered to pave the way for the synthesis of high-performance magnetic absorbers,especially in enhancing their intelligent self-healing ability in corrosive environments.

关键词： microwave absorption intelligent self-healing technology carbonyl iron multiscale structure magneticdielectric synergistic mechanism

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Effects of Bifidobacterium lactis BLa80 on fecal and mucosal flora and stem cell factor/c-kit signaling pathway in simulated microgravity rats

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World Journal of Gastroenterology 2025年第1期31卷 93-109页

作者： Ping Zhang Ying Zhu Pu Chen Tong Zhou Zhe-Yi Han Jun Xiao jian-feng Ma Wen Ma Peng Zang Ying Chen Graduate School Hebei North UniversityZhangjiakou 075000Hebei ProvinceChina Key Laboratory of Aerospace Nutrition and Food Engineering China Astronaut Research and Training CenterBeijing 100094China Department of Gastroenterology The Air Force Medical CenterBeijing 100142China Department of Blood Transfusion Air Force Medical CenterBeijing 100142China

BACKGROUND Simulated microgravity environment can lead to gastrointestinal motility *** pathogenesis of gastrointestinal motility disorders is closely related to the stem cell factor(SCF)/c-kit signaling pathway associated with intestinal flora and Cajal stromal ***,intestinal flora can also affect the regulation of SCF/c-kit signaling pathway,thus affecting the expression of Cajal stromal *** cells are the pacemakers of gastrointestinal *** To investigate the effects of Bifidobacterium lactis(***)BLa80 on the intestinal flora of rats in simulated microgravity and on the gastrointestinal motility-related SCF/c-kit *** The internationally recognized tail suspension animal model was used to simulate the microgravity environment,and 30 rats were randomly divided into control group,tail suspension group and drug administration tail suspension group with 10 rats in each group for a total of 28 *** tail group was given *** BLa80 by intragastric administration,and the other two groups were given water intragastric administration,the concentration of intragastric administration was 0.1 g/mL,and each rat was 1 mL/***&eosin staining was used to observe the histopathological changes in each segment of the intestine of each group,and the expression levels of SCF,c-kit,extracellular signal-regulated kinase(ERK)and p-ERK in the gastric antrum of each group were detected by Western blotting and *** fecal flora and mucosal flora of rats in each group were detected by 16S *** Simulated microgravity resulted in severe exfoliation of villi of duodenum,jejunum and ileum in rats,marked damage,increased space between villi,loose arrangement,shortened columnar epithelium of colon,less folds,narrower mucosal thickness,reduced goblet cell number and crypts,and significant improvement after probiotic *** microgravity reduced the expressions of SCF and c-kit,and increased the express

关键词： Simulated microgravity Rat Intestinal flora Gastrointestinal motility Stem cell factor/c-kit signaling pathway

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Kangfuxin solution alleviates esophageal stenosis after endoscopic submucosal dissection:A natural ingredient strategy

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World Journal of Gastroenterology 2025年第1期31卷 110-125页

作者： Xin Zhou Dan Ma Yi-Xiang He Jing Jin Hong-Lian Wang Yun-feng Wang Fan Yang jian-Qin Liu Jie Chen Zhi Li Department of Spleen and Stomach Diseases the Affiliated Traditional Chinese Medicine HospitalSouthwest Medical UniversityLuzhou 646000Sichuan ProvinceChina The Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Digestive System Diseases of Luzhou City The Affiliated Traditional Medicine HospitalSouthwest Medical UniversityLuzhou 646000Sichuan ProvinceChina Department of Gastroenterology Changhai HospitalNaval Medical UniversityShanghai 20082China Research Center of Integrated Chinese and Western Medicine The Affiliated Traditional Chinese Medicine HospitalSouthwest Medical UniversityLuzhou 646000Sichuan ProvinceChina School of Integrated Traditional Chinese and Western Clinical Medicine North Sichuan Medical CollegeNanchong637100Sichuan ProvinceChina

BACKGROUND Esophageal stricture ranks among the most significant complications following endoscopic submucosal dissection(ESD).Excessive fibrotic repair is a typical pathological feature leading to stenosis after *** To examine the effectiveness and underlying mechanism of Kangfuxin solution(KFX)in mitigating excessive fibrotic repair of the esophagus *** Pigs received KFX at 0.74 mL/kg/d for 21 days after esophageal full circumferential *** examinations occurred on days 7 and 21 *** vitro,recombinant transforming growth factor(TGF)-β1(5 ng/mL)induced a fibrotic microenvironment in primary esophageal fibroblasts(pEsF).After 24 hours of KFX treatment(at 1.5%,1%,and 0.5%),expression ofα-smooth muscle actin-2(ACTA2),fibronectin(FN),and type collagen I was *** signaling was analyzed,including TGF-β1,Smad2/3,and phosphor-smad2/3(p-Smad2/3).RESULTS Compared to the Control group,the groups treated with KFX and prednisolone exhibited reduced esophageal stenosis,lower weight loss rates,and improved food tolerance 21 d after *** treatment,Masson staining revealed thinner and less dense collagen fibers in the submucosal ***,the expression of fibrotic effector molecules was notably ***,KFX downregulated the transduction levels of fibrotic functional molecules such as TGF-β1,Smad2/3,and p-Smad2/*** vitro,pEsF exposed to TGF-β1-induced fibrotic microenvironment displayed increased fibrotic activity,which was reversed by KFX treatment,leading to reduced activation of ACTA2,FN,and collagen *** 1.5%KFX treatment group showed decreased expression of p-Smad 2/3 in TGF-β1-activated *** KFX showed promise as a therapeutic option for post-full circumferential esophageal ESD strictures,potentially by suppressing fibroblast fibrotic activity through modulation of the TGF-β1/Smads signaling pathway.

关键词： Kangfuxin solution Natural component Endoscopic submucosal dissection Esophagus stricture Fibrosis

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Recent Advances in Fibrous Materials for Hydroelectricity Generation

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Nano-Micro Letters 2025年第2期17卷 109-133页

作者： Can Ge Duo Xu Xiao feng Xing Yang Zheheng Song Yuhang Song Jingyu Chen Yingcun Liu Chong Gao Yong Du Zhe Sun Weilin Xu jian Fang College of Textile and Clothing Engineering Soochow UniversitySuzhou 215123People’s Republic of China National Engineering Laboratory for Modern Silk Soochow UniversitySuzhou 215123People’s Republic of China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan 430200People’s Republic of China Institute of Functional Nano&Soft Materials(FUNSOM) Soochow UniversitySuzhou 215123People’s Republic of China Department of Electrical and Computer Engineering University of MassachusettsAmherstMA 01003USA Department of Materials Imperial College LondonSouth Kensington CampusLondon SW72AZUK College of Textile Science and Engineering Zhejiang Sci-Tech UniversityHangzhou 310018People’s Republic of China School of Materials Science and Engineering Shanghai Institute of Technology100 Haiquan RoadShanghai 201418People’s Republic of China

Depleting fossil energy sources and conventional polluting power generation pose a threat to sustainable *** generation from ubiquitous and spontaneous phase transitions between liquid and gaseous water has been considered a promising strategy for mitigating the energy *** materials with unique flexibility,processability,multifunctionality,and practicability have been widely applied for fibrous materials-based hydroelectricity generation(FHG).In this review,the power generation mechanisms,design principles,and electricity enhancement factors of FHG are first ***,the fabrication strategies and characteristics of varied constructions including 1D fiber,1D yarn,2D fabric,2D membrane,3D fibrous framework,and 3D fibrous gel are ***,the advanced functions of FHG during water harvesting,proton dissociation,ion separation,and charge accumulation processes are analyzed in ***,the potential applications including power supply,energy storage,electrical sensor,and information expression are also ***,some existing challenges are considered and prospects for future development are sincerely proposed.

关键词： Hydroelectricity Fibrous material Streaming potential Ion diffusion

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Use of two-stage dough mixing process in improving water distribution of dough and qualities of bread made from wheat–potato flour

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Journal of Integrative Agriculture 2021年第1期20卷 300-310页

作者： YIN jian CHENG Li HONG Yan LI Zhao-feng LI Cai-ming ban Xiao-feng GU Zheng-biao State Key Laboratory of Food Science and Technology Jiangnan UniversityWuxi 214122P.R.China School of Food Science and Technology Jiangnan UniversityWuxi 214122P.R.China Collaborative Innovation Center of Food Safety and Quality Control in jiangsu Province Jiangnan UniversityWuxi 214122P.R.China

The two-stage dough mixing process was innovated to improve the qualities of bread made from potato flour(PF) and wheat flour at a ratio of 1:1(w/w). The final dough was first prepared from wheat flour before being added with PF. The effects of the method on enhancing the dough qualities were verified, and the distribution of water in gluten-gelatinized starch matrix of the doughs was investigated. We observed that the bread qualities were improved, as reflected by the increase of specific volume from 2.26 to 2.96 m L g^–1 and the decrease of crumb hardness from 417.93 to 255.57 g. The results from rheofermentometric measurements showed that the dough mixed using the developed mixing method had higher maximum dough height value, time of dough porosity appearance, and gas retention coefficient, as well as enhanced gluten matrix formation compared to that mixed by the traditional mixing method. The results from low-field nuclear magnetic resonance confirmed that the competitive water absorption between gluten and gelatinized starch could restrict the formation of gluten network in the dough mixed using the traditional mixing process. Using the novel mixing method, gluten could be sufficiently hydrated in stage 1, which could then weaken the competitive water absorption caused by gelatinized starch in stage 2;this could also be indicated by the greater mobility of proton in PF and better development of gluten network during mixing.

关键词： gelatinized starch gluten network potato flour water distribution two-stage dough mixing process

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Bulk viscosity of interacting magnetized strange quark matter

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Nuclear Science and Techniques 2021年第10期32卷 101-109页

作者： jian-feng Xu School of Physics and Electrical Engineering AnYang Normal UniversityAnyang 455000China

The bulk viscosity of interacting strange quark matter in a strong external magnetic field B m with a real equation of state is *** is found that interquark interactions can significantly increase the bulk viscosity,and the magnetic field B_(m) can cause irregular oscillations in both components of the bulk viscosity,ξ||(parallel to B_(m))and ξ⊥(perpendicular to B_(m)).A comparison with non-interacting strange quark matter reveals that when B_(m) is sufficiently large,ξ⊥is more affected by interactions than ξ||.Additionally,the quasi-oscillation of the bulk viscosity with changes in density may facilitate the for-mation of magnetic ***,the resulting r-mode instability windows are in good agreement with observational data for compact stars in low-mass X-ray ***,the r-mode instability window for interacting strange quark matter in high magnetic fields has a minimum rotation frequency exceeding 1050 Hz,which may explain the observed very high spin frequency of a pulsar with V=1122 Hz.

关键词： Strange quark matter Bulk viscosity Strong magnetic field Strange star R-mode instability window

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Development and validation of a nomogram for predicting metachronous peritoneal metastasis in colorectal cancer:A retrospective study

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World Journal of Gastrointestinal Oncology 2023年第1期15卷 112-127页

作者： Bo ban An Shang jian Shi Department of General Surgery The Second Hospital of Jilin UniversityChangchun 130041Jilin ProvinceChina

BACKGROUND Peritoneal metastasis(PM)after primary surgery for colorectal cancer(CRC)has the worst *** and early detection of metachronous PM(m-PM)have an important role in improving postoperative prognosis of ***,commonly used imaging methods have limited sensitivity to detect PM *** aimed to establish a nomogram model to evaluate the individual probability of m-PM to facilitate early interventions for high-risk *** To establish and validate a nomogram model for predicting the occurrence of m-PM in CRC within 3 years after *** We used the clinical data of 878 patients at the Second Hospital of Jilin University,between January 1,2014 and January 31,*** patients were randomly divided into training and validation cohorts at a ratio of 2:*** least absolute shrinkage and selection operator(LASSO)regression was performed to identify the variables with nonzero coefficients to predict the risk of *** logistic regression was used to verify the selected variables and to develop the predictive nomogram ***’s concordance index,receiver operating characteristic curve,Brier score,and decision curve analysis(DCA)were used to evaluate discrimination,distinctiveness,validity,and clinical utility of this nomogram *** model was verified internally using bootstrapping method and verified externally using validation *** LASSO regression analysis identified six potential risk factors with nonzero *** logistic regression confirmed the risk factors to be *** on the results of two regression analyses,a nomogram model was *** nomogram included six predictors:Tumor site,histological type,pathological T stage,carbohydrate antigen 125,v-raf murine sarcoma viral oncogene homolog B mutation and microsatellite instability *** model achieved good predictive accuracy on both the training and validation *** C-index,area under the curve,and

关键词： Colorectal cancer Metachronous peritoneal metastasis Risk factor Nomogram

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Simultaneously removal of P and B from Si by Sr and Zr co-addition during Al–Si low-temperature solvent refining

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International Journal of Minerals,Metallurgy and Materials 2023年第2期30卷 365-377页

作者： Chen Chen Jingwei Li Qiuxia Zuo Boyuan ban jian Chen Key Lab of Photovoltaic and Energy Conservation Materials Institute of Solid State PhysicsHFIPSChinese Academy of SciencesHefei 230031China University of Science and Technology of China Hefei 230026China School of Materials Science and Engineering Hefei University of TechnologyHefei 230009China State Key Laboratory of Mineral Processing BGRIMM Technology GroupBeijing 100160China State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization Kunming University of Science and TechnologyKunming 650504China Engineering Research Center of High Performance Copper Alloy Materials and Processing Ministry of EducationHefei University of TechnologyHefei 230009China Shandong Aluminum Vocational College Weihai 264400China

To remove the key impurity elements,P and B,from primary Si simultaneously,Sr and Zr co-addition to Al-Si alloy systems during solvent refining has been *** reacts with Al,Si,and P in the melt to form a P-containing Al_(2)Si_(2)Sr phase and Zr reacts with B to form a ZrB_(2) *** the Al-Si-Sr-Zr system,high removal fractions of P and B in the primary Si,with 84.8%-98.4%and 90.7%-96.7%,respectively,are achieved at the same time,*** best removal effect is obtained in the sample with the addition of Sr-32000+Zr-3000μg·kg^(-1),and the removal fractions of P and B in the purified Si reach 98.4%and 96.1%.Compared with the Sr/Zr single-addition,the removal effects of Sr and Zr co-addition on P and B do not show a significant downward trend,indicating that the nucleation and growth of the B/P-containing impurity phases are mutually ***,an evolution model is proposed to describe the nucleation and the growth stages of Sr/Zr-containing compound phases,which reveals the interaction between the impurity phases and the primary Si.

关键词： Al2Si2Sr phase zirconium boride phase phase directional solidification solvent refining

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