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Journal of Environmental Sciences 2013年第6期25卷 1180-1185页

作者： Jyoti Prakash Maity Yuh Ming Huang Cheng-Wei Fan Chien-Cheng Chen chun-Yi Li chun-mei hsu Young-Fo Chang Ching-I Wu Chen-Yen Chen Jiin-Shuh Jean Department of Earth and Environmental Sciences "National" Chung Cheng University 168University Rd. Department of Soil Environmental Science "National" Chung-Hsing University Department of Biotechnology "National" Kaohsiung Normal University Graduate School of Landscape "National" Chin-Yi University of Technology Department of Earth sciences "National" Cheng Kung University

The use of a biodegradable natural plant-based surfactant extracted from soapberry is proposed for the remediation of Ni, Cr and Mn from industrial soil site in Hai-Pu, Taiwan. Batch experiments were performed under variation of fundamental factors （saponin concentration, pH, and incubation time） for metal remediation. Removal of Ni and Mn were increased with increasing saponin concentration （0.015-0.150 g/L）, whereas the removal of Cr was increased upto 0.075 g/L saponin. The Ni, Cr and Mn were removed significantly （p 〈 0.05） at near to the neutral and slightly acidic （pH 5 to 8） conditions. Removal efficiency of Ni （99%） from the soil was found to be greater than that of Cr （73%） or Mn （25%） in the presence of saponin at a concentration of 0.150 g/L at pH 5. The removal percentage increased with incubation time where the removal of Ni was faster than that of Cr and Mn. The result indicates the feasibility of cco-friendly removal of heavy metal （Ni, Cr and Mn） from industrial soil by soil washing process in presence of plant derived saponin.

关键词： heavy metal remediation contaminated soil soapberry

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系统论视域下高校实践育人共同体建设探析

黑龙江高教研究 2025年第1期43卷 112-117页

作者：何莹李春梅西南交通大学四川成都611756

实践育人是高校思想政治工作的重要环节,高校实践育人共同体建设是高校实践育人工作的重要抓手。高校实践育人共同体作为一个复杂的系统,与系统的整体性、层次性、协同性等特征相契合,具有丰富的系统意蕴。基于系统论视域,发现高校实践... 详细信息

实践育人是高校思想政治工作的重要环节,高校实践育人共同体建设是高校实践育人工作的重要抓手。高校实践育人共同体作为一个复杂的系统,与系统的整体性、层次性、协同性等特征相契合,具有丰富的系统意蕴。基于系统论视域,发现高校实践育人共同体建设仍存在理念偏差、动力不强、协作不畅、对接不足等系统困境,并从系统集成的深度和广度上提出优化高校实践育人共同体建设的“内部要素协调+外部环境互动”模式,通过建章立制、凝聚共识,契合需求、激发动力,整合资源、协同共建,统筹规划、因时而新等路径,实现高校实践育人共同体建设的系统集成,提升高校实践育人共同体的育人实效。

关键词：系统论系统集成实践育人共同体建设

Two Weighted Estimates for the Commutators of Multilinear Maximal Singular Integral Operators with Dini-type Kernels

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Acta Mathematica Sinica,English Series 2023年第3期39卷 459-480页

作者： chun mei ZHANG School of Mathematical Sciences Beijing Normal UniversityBeijing 100875P.R.China

The main purpose of this paper is to investigate the properties of the higher order commutators of maximal Calderón-Zygmund operators with Dini-type *** weighted estimates have been established for these *** results ... 详细信息

关键词： Commutators sparse domination multlinear maximal singular integral operators Dinitype kenels two weighted boundedness

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Perfect Matching in k-partite k-graphs and 3-uniform HM-bipartite Hypergraphs

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Acta Mathematicae Applicatae Sinica 2020年第3期36卷 636-641页

作者： chun-qiu FANG mei LU Department of Mathematical Sciences Tsinghua UniversityBeijing 100084China

Let H=(V,E)be an n-balanced k-partite k-graph with partition classes V1,...,*** for every legal(k-1)-tuple f contained in V\V1 and for every legal(k-1)-tuple g contained in V\Vk such that f∪g■E(H),we have d(f)+d(g)≥n+*** this paper,we prove that under this condition H must have a perfect *** result of this paper is about the perfect matching in 3-uniform hm-bipartite *** G be a 3-uniform hm-bipartite hypergraph with one of whose sides V1 has the size n,the another side V2 has size 2 *** for all the legal 2-tuple f with|f∩V1|=1 and for all the legal 2-tuple g with|g∩V1|=0,we have d(f)≥n-2 and d(g)>n/2,then G has a perfect matching.

关键词： Perfect matching k-partite k-graph hm-bipartite hypergraph

Aromatic Polyimides with Tertbutyl-substituted and Pendent Naphthalene Units:Synthesis and Soluble,Transparent Properties

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Chinese Journal of Polymer Science 2015年第8期33卷 1074-1085页

作者： Chan-juan Liu mei mei Xiang-lin Pei 黄孝华 chun Wei Key Laboratory of New Processing Technology for Nonferrous Metal & Materials Ministry of Educationand School of Material Science and EngineeringGuilin University of Technology Ministry of Education Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources School of Chemistry and Pharmaceutical ScienceGuangxi Normal University

A novel non-coplanar aromatic diamine monomer, 3,3＇-ditertbutyl-4,4＇-diaminodiphenyl-4＂-naphthylmethane （TAPN） was synthesized by a condensation reaction of 2-tertbutylaniline and 1-naphthaldehyde under catalyst hydrochloric acid. The structure of the monomer was confirmed by FTIR, NMR, elementary analysis and mass spectrometry. A series of aromatic polyimides （PIs） were synthesized via conventional one-step polycondensation from TAPN and various commercial aromatic dianhydrides. All of the PIs exhibit excellent solubility in common organic solvents, even in low boiling point solvents such as chloroform （CHC13）, tetrahydrofuran （THF） and acetone. The PIs present outstanding thermal stability with the glass transition temperature （Tg） ranged from 299 ℃ to 350 ℃, and the temperature at 10% weight loss ranged from 490 ℃ to 504 ℃, and high optical transparency with the cutoff wavelengths of 306-356 nm. Moreover, the flexible and tough PI films have prominent mechanical properties with tensile strengths in the range of 77.6-90.5 MPa, tensile modulus in the range of 1.8-2.4 GPa and elongation at break in the range of 6.3%-9.5%, as well as lower dielectric constant （2.89-3.12 at 1 MHz） and lower moisture absorption （0.35%-0.66%）.

关键词： Polyimides Solubility Dielectric constant Tertbutyl Naphthyl.

A Khovanov Type Link Homology with Geometric Interpretation

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Acta Mathematica Sinica,English Series 2016年第4期32卷 393-405页

作者： mei Li ZHANG Feng chun LEI School of Mathematical Sciences Dalian University of Technology Department of Basis Dalian Naval Academy

We study a Khovanov type homology close to the original Khovanov homology theory from Frobenius *** homology is an invariant for oriented links up to isotopy by applying a tautological functor on the geometric *** homology has also geometric descriptions by introducing the genus generating *** prove that Jones Polynomial is equal to a suitable Euler characteristic of the homology *** an application,we compute the homology groups of（2,k）-torus knots for every k ∈ N.

关键词： Frobenius system TQFT Khovanov homology

Multi-mode Coherent-Entangled State Representation and Its Applications

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Communications in Theoretical Physics 2008年第11期50卷 1081-1088页

作者： LI Heng-mei YUAN Hong-chun Institute for Theoretical Physics and Department of Modern Physics University of Science and Technology of China Hefei 230026 China Department of Physics Huaibei Coal Industry Teachers＇ College Huaibei 235000 China Department of Physics Shanghai Jiao Tong University Shanghai 200030 China

We introduce the so-called coherent-entangled state (CES) in the four-mode Fock space,which makesup a new quantum mechanical representation owing to completeness relation and orthogonal *** standardSchmidt decomposition and experimental generation using beam-splitter (BS) are *** addition,its applicationsin quantum optics are ***,we extend it to multi-mode case and discuss some applications,too.

关键词： coherent-entangled state (CES) representation beam splitter (BS)

Effects of Time Delay on Stability of an Unstable State in a Bistable System with Correlated Noises

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Chinese Physics Letters 2011年第4期28卷 40-42页

作者： LI chun mei Dong-Cheng Department of Computer Science Simao Teachers’CollegePuer 665000 Department of Physics Yunnan UniversityKunming 650091

Effects of time delay on stability of an unstable state in a time-delayed bistable system are *** analytic expression of the transition rate W(x_(u),τ)from unstable state xu to stable state x+is *** numerical calculation results of W(x_(u),τ)indicate that W(x_(u),τ)decreases with the increasing multiplicative noise intensity,the additive noise intensi by and the strength of correlations between the multiplicative and the additive noise increase,but W(x_(u),τ)increases with increasing delay ***,the multiplicative noise,the additive noise and the correlations between the multiplicative and the additive noises enhance the stability of the unstable state in the time-delayed bistable system but the stability is weakened by time delay.

关键词： unstable noise Effects

Acute cholangitis detected ectopic ampulla of Vater in the antrum incidentally: A case report

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World Journal of Clinical Cases 2021年第14期9卷 3379-3384页

作者： hsu-Lin Lee chun-Kai Fu Department of Internal Medicine Taichung Armed Forces GeneralHospitalTaichung 411Taiwan Department of Internal Medicine National Defense Medical CenterTaipei 114Taiwan

BACKGROUND The ampulla of Vater is an opening at the confluence of the common bile duct and pancreatic *** is located in the second portion of the *** ectopic papilla of Vater is an anomalous *** cases have been *** report the rare case of a man with an ectopic ampulla of Vater in the *** SUMMARY An 82-year-old man had experienced abdominal pain and fever with chills 1 d before his presentation.A computed tomography scan of the abdomen demonstrated dilatation of the common bile duct approximately 2.2 cm in *** retention was found in his intrahepatic *** cholangitis with pneumobilia was identified,and he was *** and endoscopic retrograde cholangiopancreatography disclosed no ampulla of Vater in the second portion of the ***,a capsule-like foreign body(pharmaceutical desiccant)approximately 1 cm×2 cm in size was found at the gastric antrum and peri-pyloric *** the foreign body was removed,one orifice presented over the pyloric ring in the stomach,a suspected ectopic ampulla of ***,sludge in the common bile duct was cleaned,and balloon dilatation was *** general condition improved *** patient was discharged in a stable condition and followed in our outpatient *** This case involved an ampulla of Vater in an unusual *** retrograde cholangiopancreatography with balloon dilatation is the main treatment recommended and performed.

关键词： Ectopic papilla of Vater Ectopic ampulla of Vater Pneumobilia Endoscopic retrograde cholangiopancreatography Acute cholangitis Case report

Synthesis and Characterization of Fluorinated Polyimide Derived from 3,3＇-Diisopropyl-4,4＇-diaminodiphenyl- 3＂,4＂-difluorophenylmethane

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Chinese Journal of Chemistry 2015年第10期33卷 1159-1166页

作者： Xiaohua Huang mei mei Chanjuan Liu Xianglin Pei chun Wei Key Laboratory of New Processing Technology for Nonferrous Metal & Materials Ministry of Education andSchool of Material Science and Engineering Guilin University of Technology Guilin Guangxi 541004 China Ministry of Education Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources School of Chemistry and Pharmaceutical Science Guangxi Normal University Guilin Guangxi 541004 China

A novel aromatic diamine monomer, 3,3＇-diisopropyl-4,4＇-diaminodiphenyl-3＂,4＂-difluorophenylmethane （PAFM）, was successfully synthesized by coupling of 2-isopropylaniline and 3,4-difluorobenzaldehyde. The aro- matic diamine was adopted to synthesize a series of fluorinated polyimides by polycondensation with various dian- hydrides： pyromellitic dianhydride （PMDA）, 3,3＇,4,4＇-biphenyltetracarboxylic dianhydride （BPDA）, 4,4＇-oxydiph- thalic anhydride （ODPA） and 3,3＇,4,4＇-benzophenone tetracarboxylic dianhydride （BTDA） via the conventional one-step method. These polyimides presented excellent solubility in common organic solvents, such as N,N-dimeth- ylformamide （DMF）, N,N-dimethyl acetamide （DMAc）, dimethyl sulfoxide （DMSO）, N-methyl-2-pyrrolidone （NMP）, chloroform （CHC13）, tetrahydrofuran （THF） and so on. The glass transition temperatures （Tg） of fluorinated polyimides were in the range of 260--306 ℃ and the temperature at 10% weight loss in the range of 474--502 ℃ Their films showed the cut-off wavelengths of 330--361 nm and higher than 80% transparency in a wavelength range of 385--463 nm. Moreover, polymer films exhibited low dielectric properties in the range of 2.76--2.96 at 1 MHz, as well as prominent mechanical properties with tensile strengths of 66.7--97.4 MPa, a tensile modulus of 1.7--2.1 GPa and elongation at break of 7.2%- 12.9%. The polymer films also showed outstanding hydrophobicity with the contact angle in the range of 91.2°--97.9°.

关键词： fluorinated polyimides solubility transparency dielectric constant