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Special Issue: Functional Polymer Materials

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Chinese Journal of Polymer Science 2024年第7期42卷 895-896,I0004页

作者： jun-Wei gu Du-Jin Wang Shaanxi Key Laboratory of Macromolecular Science and Technology School of Chemistry and Chemical Engineering Northwestern Polytechnical University Xi’an 710072 China Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Engineering Plastics Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China

The rapid development of science has led to a significant role for polymer materials in multitude fields,including industry,medicine,energy,and the environment,*** a leading academic journal in the field of polymer,Chinese Journal of Polymer Science has been dedicated to fostering the advancement and utilization of polymer science.

关键词： polymer Polymer Functional

APPLICATION OF WEIGHTED NONOSCILLATORY AND NON-FREE-PARAMETER DISSIPATION DIFFERENCE SCHEME IN CALCULATING THE FLOW OF VIBRATING FLAT CASCADE

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Chinese Journal of Mechanical Engineering 2007年第6期20卷 69-73页

作者： XIAO jun gu Chuangang SHU Xinwei Key Laboratory for Power Machinery and Engineering Ministry of Education Shanghai Jiaotong University Shanghai 200030 China

A dual-time method is introduced to calculate the unsteady flow in a certain vibrating flat cascade. An implicit lower-upper symmetric-gauss-seidel scheme（LU-SGS） is applied for time stepping in pseudo time domains, and the convection items are discretized with the spatial three-order weighted non-oscillatory and non-free-parameter dissipation difference （WNND） scheme. The turbulence model adopts q-co low-Reynolds-number model. The frequency specmuns of lift coefficients and the unsteady pressure-difference coefficients at different spanwise heights as well as the entropy contours at blade tips on different vibrating instants, are obtained. By the analysis of frequency specmuns of lift coefficients at three spanwise heights, it is considered that there exist obvious non-linear perturbations in the flow induced by the vibrating, and the perturbation frequencies are higher than the basic frequency. The entropy contours at blade tips at different times display an intensively unsteady attribute of the flow under large amplitudes.

关键词： Vibrating cascade Weighted non-oscillatory and non-free-parameter dissipation difference scheme Frequency spectrum of lift coefficient Unsteady pressure-difference coefficient

Effect of temperature on electrophoresis velocity of sol particles in water

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Journal of Harbin Institute of Technology(New Series) 2002年第4期9卷 348-350页

作者： bao Zhi-yu(鲍治宇) gu Da-ming(顾大明) Dept. of Environment Protection Suzhou University of Science and Technology Suzhou 215011 China Dept. of Chemistry Harbin Institute of Technology Harbin 150090 China

Viscosity of water is affected by temperature and electrophoresis velocity is related to the viscosity of colloid. However, there hasn’t been any direct description about the relation between electrophoresis velocity of colloid and temperature. Based on a large number of tests, the relation between electrophoresis velocity and temperature is established as [v=A+B(T-T°)]. Meanwhile the ratio of the electric charge (q) of sol particles to their radium (r) is a constant is obtained. The results of above were testified in both experiment and theory.

关键词： electrophoresis velocity viscosity temperature iron hydroxide colloidal sol

Natural lotus root-based scaffolds for bone regeneration

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Chinese Chemical Letters 2022年第4期33卷 1941-1945页

作者： Keqing Huang jun Huang Jinmin Zhao Zhipeng gu jun Wu School of Biomedical Engineering Sun Yat-sen UniversityShenzhen 518107China guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation Sun Yat-sen Memorial HospitalSun Yat-sen UniversityGuangzhou 510120China guangxi Engineering Center in Biomedical Materials for Tissue and Organ Regeneration the First Affiliated Hospital of Guangxi Medical UniversityNanning 530021China Research Institute of Sun Yat-sen University in Shenzhen Shenzhen 518057China College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu 610065China guangdong Academy of Sciences Institute of Biological and Medical EngineeringGuangzhou 510316China

A high incidence of bone defects and the limitation of autologous bone grafting require 3 D scaffolds for bone repair. Compared with synthetic materials, natural edible materials possess outstanding advantages in terms of biocompatibility, bioactivities and low manufacturing cost for bone tissue engineering. In this work, attracted by the natural porous/fabric structure, good biocompatibility and bioactivities of the lotus root, the lotus root-based scaffolds were fabricated and investigated their potential to serve as natural porous bone tissue engineering scaffolds. The results indicated that the lotus root-based scaffolds possess suitable natural microstructure, excellent biocompatibility and promising functions, such as antioxidant capacity and angiogenesis promotion. Remarkably, lotus root scaffolds showed encouraging possibility of bone tissue engineering while the mineralized lotus root could further improve the bone regeneration in vivo. All the results demonstrated the bone regeneration potential of lotus root-based scaffolds equipped with suitable natural architecture, excellent biocompatibility, specific bioactivities and low manufacturing cost.

关键词： Bone regeneration Lotus root Porous structure Mineralization

Improved Reduced Latency Soft-Cancellation Algorithm for Polar Decoding

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China Communications 2020年第5期17卷 65-77页

作者： Xiumin Wang Rui gu jun Li Qiangqiang Ma College of Information Engineering China Jiliang UniversityHangzhou 310018China Binjiang College Nanjing University of Information Science&TechnologyWuxi 214105China

Soft-cancellation(SCAN) is a soft output iterative algorithm widely used in polar decoding. This algorithm has better decoding performance than reduced latency soft-cancellation(RLSC) algorithm, which can effectively reduce the decoding delay of SCAN algorithm by 50% but has obvious performance loss. A modified reduced latency soft-cancellation(MRLSC) algorithm is presented in the paper. Compared with RLSC algorithm, LLR information storage required in MRLSC algorithm can be reduced by about 50%, and better decoding performance can be achieved with only a small increase in decoding delay. The simulation results show that MRLSC algorithm can achieve a maximum block error rate(BLER) performance gain of about 0.4 dB compared with RLSC algorithm when code length is 2048. At the same time, compared with the performance of several other algorithms under(1024, 512) polar codes, the results show that the throughput of proposed MRLSC algorithm has the advantage at the low and medium signal-to-noise ratio(SNR) and better BLER performance at the high SNR.

关键词： polar codes belief propagation SCAN algorithm RLSC algorithm iteration

The essential roles of m^(6)A modification in osteogenesis and common bone diseases

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Genes & Diseases 2024年第1期11卷 335-345页

作者： Yuxi gu Yidan Song Yihua Pan jun Liu State Key Laboratory of Oral Diseases&National Clinical Research Center for Oral Diseases Department of OrthodonticsWest China Hospital of StomatologySichuan UniversityChengduSichuan 610041China

N6-methyladenosine(m^(6)A)is the most prevalent modification in the eukaryotic transcriptome and has a wide range of functions in coding and noncoding *** affects the fate of the modified RNA,including its stability,splicing,and translation,and plays an important role in post-transcriptional *** play a key role in supporting and pro-tecting muscles and other organs,facilitating the movement of the organism,ensuring blood production,*** diseases such as osteoarthritis,osteoporosis,and bone tumors are serious public health *** processes of bone development and osteogenic differen-tiation require the precise regulation of gene expression through epigenetic mechanisms including histone,DNA,and RNA *** a reversible dynamic epigenetic mark,m^(6)A modifications affect nearly every important biological process,cellular component,and molecular function,including skeletal development and *** recent years,studies have shown that m^(6)A modification is involved in osteogenesis and bone-related *** this review,we summarized the proteins involved in RNA m^(6)A modification and the latest progress in elucidating the regulatory role of m^(6)A modification in bone formation and stem cell direc-tional *** also discussed the pathological roles and potential molecular mech-anisms of m^(6)A modification in bone-related diseases like osteoporosis and osteosarcoma and suggested potential areas for new strategies that could be used to prevent or treat bone de-fects and bone diseases.

关键词： Bone diseases m^(6)A modification Osteogenesis Regulatory role Stem cells

Compressed Data Separation via ℓ_(q)-Split Analysis with ℓ_(∞)-Constraint

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Acta Mathematica Sinica,English Series 2024年第7期40卷 1655-1673页

作者： Ming Yang gu Song Li jun Hong Lin School of Mathematical Science Zhejiang UniversityHangzhou310027P.R.China Center for Data Science Zhejiang UniversityHangzhou310027P.R.China

In this paper,we study compressed data separation(CDS)problem,i.e.,sparse data separation from a few linear random *** propose the nonconvex ℓ_(q)-split analysis with ℓ_(∞)-constraint and 0 详细信息

In this paper,we study compressed data separation(CDS)problem,i.e.,sparse data separation from a few linear random *** propose the nonconvex ℓ_(q)-split analysis with ℓ_(∞)-constraint and 0

关键词： Data separation ℓ_(q)-split analysis Dantzig selector frames restricted isometry property compressed sensing

Cervical spondylotic myelopathy with syringomyelia presenting as hip Charcot neuroarthropathy:A case report and review of literature

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World Journal of Clinical Cases 2022年第3期10卷 1077-1085页

作者： Yu Lu jun-Yi Xiang Cheng-Yu Shi Ju-bao Li Hai-Chao gu Chang Liu guo-Yu Ye Department of Orthopedics Yunnan Provincial Hospital of Traditional Chinese MedicineKunming 650000Yunnan ProvinceChina Department of Management and Economics Kunming University of Science and TechnologyKunming 650000Yunnan ProvinceChina Department of Sleep Center The First People's Hospital of Yunnan ProvinceKunming 650000Yunnan ProvinceChina

BACKGROUND Charcot neuroarthropathy(CN)is a systemic disease characterized by progressive bone loss and destruction,which is usually closely related to diabetes,HIV,***,CN caused by syringomyelia accounts for only 5%of CN cases;the shoulder and elbow are most often involved,and the hip joint is rarely *** a rare factor,cervical spondylotic myelopathy(CSM)can be associated with syringomyelia,which is scarcely reported in the ***,we present the first case report to date of CN of the hip caused by syringomyelia secondary to *** SUMMARY We describe a 76-year-old male patient who was diagnosed with CSM due to neck pain and weakness of limbs 16 years *** years ago,he noticed recurrent swelling of the right hip with pain and was diagnosed with degenerative ***,however,his symptoms gradually worsened,and because of progressive pain,destabilization and weakness of the right hip,he was admitted to our *** systematic physical,radiographic and laboratory examinations,we finally reached a diagnosis:CN of the right hip associated with syringomyelia secondary to *** comprehensive evaluation of the patient's condition,we performed right total hip *** the follow-up,the patient felt well clinically and could walk independently with a knee *** We suggest a possible etiological association between CSM and syringomyelia,which may reflect a potential pathogenesis of *** encourage clinicians to actively carry out a detailed medical history and comprehensive physical and imaging examinations in patients with joint lesions,especially chronic shoulder neck pain,to rule out the possibility of this association,which plays a crucial role in the early diagnosis of *** may no longer be an absolute contraindication to surgical treatment of *** selection of the surgical strategy can markedly improve the clinical symptoms and quality of life of patients.

关键词： Cervical spondylotic myelopathy Syringomyelia Hip Charcot neuroarthropathy Case report

Degradation of atrazine and changes in soil biological indices throughout dendroremediation using poplars

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Journal of Forestry Research 2019年第6期30卷 2331-2339页

作者： Bin Yao Xuejing gu Ying-ge Shu Fang bao Yonghua Li Institute of Desertification Studies Chinese Academy of ForestryBeijing 100091People’s Republic of China Beijing Municipal Research Institute of Environmental Protection Beijing 100037People’s Republic of China Ecology and Environment Department of guizhou University Guiyang 550025People’s Republic of China

Dendroremediation,a novel strategy for cleaning up contaminants from the environment by using special woody plant species and microbes,is a popular phytoremediation *** is a cost-effective and environmentally friendly method that is being increasingly *** species(Populus L.)have been suggested for use in remediation because of their characteristics of high biomass production,fast growth,and potential for removing *** environment is often contaminated by toxic substances produced by human activities,and remediation of contamination is therefore a global *** is one of the most widely used herbicides in *** the present study,‘I-69/55’poplar(*** cv.‘I-69/55’)and hybrid poplar(Populus deltoides×nigra,DN34)grown in pots were assayed for their ability to remediate atrazine-contaminated *** degradation dynamics of atrazine were assessed with a high-performance liquid chromatography system using materials from a greenhouse with different rhizosphere *** studied the dynamic variation in microbes and microbial biomass carbon to elucidate the rhizosphere effects and mechanism of remediation of atrazine-contaminated soil by *** four treatments included a control with uncontaminated soil without a tree,atrazine pollution without a tree,atrazine pollution with‘I-69/55’poplar,and atrazine pollution with hybrid *** poplar showed potential for remediation of atrazine-contaminated soil,and the degradation of atrazine in the rhizosphere was faster than that in non-rhizosphere *** significantly inhibited bacteria growth in nonrhizosphere *** high concentration of bacteria in the hybrid poplar rhizosphere might be key to atrazine *** of change among fungi and actinomyces did not correspond to trends in atrazine degradation throughout the trial *** research is needed to predict the effects of atrazine on cultivable microorganisms in various *** had s

关键词： Atrazine Dendroremediation Poplar Biodegradation Microbes