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Short Cycle Structure of Graphs on Surfaces (1)-the Uniqueness Theorems

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Acta Mathematicae Applicatae Sinica 2008年第4期24卷 677-680页

作者： Han Ren mo deng Department of Mathematics East China Normal University Shanghai 200062 China

In this paper we investigate cycle base structures of a （weighted） graph and show that much information of short cycles is contained in a MCB （minimum cycle base）. After setting up a Hall type theorem for base-transformation, we give a sufficient and necessary condition for a cycle base to be a MCB. Further more, we show that the structure of MCB in a （weighted） graph is unique. In the case of nonnegative weight, every pair of MCB have the same number of k-cycles for each integer k ≥ 3. The property is also true for those having longest length （although much work has been down in evaluating MCB, little is known for those having longest length）.

关键词： Cycle base facial cycle graph embedding

Learning to synthesize:robust phase retrieval at low photon counts

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Light(Science & Applications) 2020年第1期9卷 1657-1672页

作者： mo deng Shuai Li Alexandre Goy Iksung Kang George Barbastathis Department of Electrical Engineering and Computer Science Massachusetts Institute of TechnologyCambridgeMA 02139USA Sensebrain Technology Limited LLC 2550 N 1st StreetSuite 300San JoseCA 95131USA Omnisens SA Riond Bosson 31110 MorgesVDSwitzerland Department of Mechanical Engineering Massachusetts Institute of TechnologyCambridgeMA 02139USA Singapore-MIT Alliance for Research and Technology(SMART)Centre Singapore 117543Singapore

The quality of inverse problem solutions obtained through deep learning is limited by the nature of the priors learned from examples presented during the training *** in the case of quantitative phase retrieval,spatial frequencies that are underrepresented in the training database,most often at the high band,tend to be suppressed in the *** hoc solutions have been proposed,such as pre-amplifying the high spatial frequencies in the examples;however,while that strategy improves the resolution,it also leads to high-frequency artefacts,as well as low-frequency distortions in the ***,we present a new approach that learns separately how to handle the two frequency bands,low and high,and learns how to synthesize these two bands into full-band *** show that this“learning to synthesize”(LS)method yields phase reconstructions of high spatial resolution and without artefacts and that it is resilient to high-noise conditions,e.g.,in the case of very low photon *** addition to the problem of quantitative phase retrieval,the LS method is applicable,in principle,to any inverse problem where the forward operator treats different frequency bands unevenly,i.e.,is ill-posed.

关键词： synthesize bands phase

Sm-like 5 knockdown inhibits proliferation and promotes apoptosis of colon cancer cells by upregulating p53,CDKN1A and TNFRSF10B

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World Journal of Gastrointestinal Oncology 2024年第6期16卷 2716-2726页

作者： Cai-Jing mo Xiao-Yuan deng Ru-Lan Ma Kun Zhu Lei Shi Kang Li Department of Surgical Oncology The First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710061Shaanxi ProvinceChina Department of Infectious Diseases The First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710061Shaanxi ProvinceChina

BACKGROUND The role of Sm-like 5(LSM5)in colon cancer has not been *** this study,we investigated the role of LSM5 in progression of colon cancer and the potential underlying mechanism *** To determine the role of LSM5 in the progression of colon cancer and the potential underlying mechanism *** The Gene Expression Profiling Interactive Analysis database and the Human Protein Atlas website were used for LSM5 expression analysis and prognosis ***-time quantitative polymerase chain reaction and Western blotting were utilized to detect the expression of mRNAs and proteins.A lentivirus targeting LSM5 was constructed and transfected into colon cancer cells to silence LSM5 *** and apoptosis assays were also conducted to evaluate the growth of the colon cancer *** GeneChip assay and bioinformatics analysis were performed to identify the potential underlying mechanism of LSM5 in colon *** LSM5 was highly expressed in tumor tissue and colon cancer cells.A high expression level of LSM5 was related to poor prognosis in patients with colon *** of LSM5 suppressed proliferation and promoted apoptosis in colon cancer *** of LSM5 also facilitates the expression of p53,cyclin-dependent kinase inhibitor 1A(CDKN1A)and tumor necrosis factor receptor superfamily 10B(TNFRSF10B).The inhibitory effect of LSM5 knockdown on the growth of colon cancer cells was associated with the upregulation of p53,CDKN1A and *** LSM5 knockdown inhibited the proliferation and facilitated the apoptosis of colon cancer cells by upregulating p53,CDKN1A and TNFRSF10B.

关键词： Sm-like 5 Colon cancer Proliferation Apoptosis Knockdown

Regulation of 2-acetyl-1-pyrroline and grain quality in early-season indica fragrant rice by nitrogen and silicon fertilization under different plantation methods

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Journal of Integrative Agriculture 2024年第2期23卷 511-535页

作者： Yongjian Chen Lan Dai Siren Cheng Yong Ren Huizi deng Xinyi Wang Yuzhan Li Xiangru Tang Zaiman Wang Zhaowen mo State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources College of AgricultureSouth China Agricultural UniversityGuangzhou 510642China Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology Yulin Normal UniversityYulin 537000China Key Laboratory for Conservation and Utilization of Subtropical Bio-Resources Education Department of Guangxi Zhuang Autonomous Region/College of Biology and PharmacyYulin Normal UniversityYulin 537000China Scientific Observing and Experimental Station of Crop Cultivation in South China Ministry of Agriculture and Rural AffairsGuangzhou 510642China Guangzhou Key Laboratory for Science and Technology of Fragrant Rice Guangzhou 510642China Key Laboratory of Key Technology for South Agricultural Machine and Equipment Ministry of Education/College of EngineeringSouth China Agricultural UniversityGuangzhou 510642China

Fragrant rice has a high market value,and it is a popular rice type among consumers owing to its pleasant *** methods,nitrogen(N)fertilizers,and silicon(Si)fertilizers can affect the grain yield and fragrance of fragrant ***,the core commercial rice production attributes,namely the head rice yield(HRY)and 2-acetyl-1-pyrroline(2-AP)content of fragrant rice,under various nitrogen and silicon(N-Si)fertilization levels and different plantation methods remain *** field experiment in this study was performed in the early seasons of 2018 and 2019 with two popular indica fragrant rice cultivars(Yuxiangyouzhan and Xiangyaxiangzhan).They were grown under six N-Si fertilization treatments(combinations of two levels of Si fertilizer,0 kg Si ha^(−1)(Si0)and 150 kg Si ha^(−1)(Si1),and three levels of N fertilizer,0 kg N ha^(−1)(N0),150 kg N ha^(−1)(N1),and 220 kg N ha^(−1)(N2))and three plantation methods(artificial transplanting(AT),mechanical transplanting(MT),and mechanical direct-seeding(MD)).The results showed that the N-Si fertilization treatments and all the plantation methods significantly affected the HRY and 2-AP content and related parameters of the two different fragrant rice *** with the Si0N0 treatment,the N-Si fertilization treatments resulted in higher HRY and 2-AP *** rates of brown rice,milled rice,head rice,and chalky rice of the fragrant rice also improved with the N-Si fertilization *** N-Si fertilization treatments increased the activities of N metabolism enzymes and the accumulation of N and Si in various parts of the fragrant rice,and affected their antioxidant response *** key parameters for the HRY and 2-AP content were assessed by redundancy ***,the structural equation model revealed that the Si and N accumulation levels indirectly affected the HRY by affecting the N metabolism enzyme activity,N use efficiency,and grain quality of fragrant ***,high N

关键词： fragrant rice 2-AP content head rice yield mechanical planting nitrogen silicon

Structures of Facial Cycles and C-bridges of Embedded Graphs with Locally LEW-embedding Properties

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Chinese Quarterly Journal of Mathematics 2008年第4期23卷 475-479页

作者： deng mo REN Han DONG Qian Department of Mathematics East China Normal University Shanghai 200062 China

在这份报纸，我们在 orientable 为局部地嵌入LEW 的 3-connected 图 G 显示出那表面，下列结果 hold:1 )每如此的 embeddings 是最小的类嵌入； 2 )面部周期正是暗示如此的 embeddings 的唯一的导致的 nonseparating 周期； 3 )每重叠... 详细信息

在这份报纸，我们在 orientable 为局部地嵌入LEW 的 3-connected 图 G 显示出那表面，下列结果 hold:1 )每如此的 embeddings 是最小的类嵌入； 2 )面部周期正是暗示如此的 embeddings 的唯一的导致的 nonseparating 周期； 3 )每重叠图 O ( G ， C )是一张由两部组成的图， G 有一仅仅C桥 H 以便如果 C 是短的一个会缩的周期， C U H 比包含 *** 的一个边的每个 noncontractible 周期延长的是

关键词：局部大边宽嵌入图面圈 C-桥结构

Synthesis of novel biodegradable poly(ethylene glycol) analogue:Water-soluble aliphatic polyester with pendant oligo(ethylene glycol) chains

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Chinese Chemical Letters 2009年第12期20卷 1502-1505页

作者： Lei Feng Jian Yuan Hao Cheng Dong Xiong Xian mo deng Chengdu Institute of Organic Chemistry Chinese Academy of Sciences P.O. Box 415 Chengdu 610041 China School of Microeletronics and Solid State Electronics University of Electronic Science and Technology of China Chengdu 610054 China Graduate School of Chinese Academy of Sciences Beijing 100039 China

A novel poly（ethylene glycol）（PEG） analogue composed of aliphatic polyester backbone and pendant oligo（ethylene glycol） short chains is reported. The PEG analogue is a copolymer synthesized by ring-opening alternating copolymerization of succinic anhydride with 2-（（2-（2-metho xyethoxy）ethoxy）methyl）oxirane. The structure of the copolymer was confirmed by ^1H NMR spectrum. The effects of the monomer feed ratio on the copolymerization were studied and the polymerization mechanism was given. The PEG analogue disclosed is water-soluble and expected to have promising applications in biomedical fields as a substitute of PEG due to the existence of degradable ester bond in the backbone.

关键词： Water-soluble PEG analogue 2-((2-(2-Methoxyethoxy)ethoxy)methyl)oxirane Ring-opening alternating copolymerization Polyester

Rapid synthesis of biodegradable poly(epsilon-caprolactone-co-p-dioxanone) random copolymers under microwave irradiation

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Chinese Chemical Letters 2010年第2期21卷 249-252页

作者： Chen, Rui Hao, Jian Yuan Xiong, Cheng Dong deng, Xian mo Chinese Acad Sci Chengdu Inst Organ Chem Chengdu 610041 Peoples R China Univ Elect Sci & Technol China Sch Microeletron & Solid State Elect Chengdu 610054 Peoples R China Chinese Acad Sci Grad Sch Beijing 100039 Peoples R China

Biodegradable poly(epsilon-caprolactone-co-p-dioxanone)(PCDO) random copolymers have been synthesized by ring-opening polymerization of epsilon-caprolactone(CL) and p-dioxanone(PDO) under microwave *** effects of irradiation time and different CL/PDO molar feed ratios on the microwave-assisted ring-opening polymerization(MROP) of PCDO have been *** resultant products were characterized by ~1H NMR,GPC and *** was found that the polymerization was completed within 20 min at 140℃.In th...

关键词： Biodegradable p-Dioxanone Microwave irradiation Random copolymer

Synthesis and Luminescent Properties of LuAG:Ce^(3+) Transparent Ceramics by Solvo-Thermal Method

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光谱学与光谱分析 2011年第2期31卷 308-313页

作者： WANG Lin-xiang ZHU Heng-jiang WU Ling-yuan deng Kai-mo GUO Chang-xin YIN Min Physics Department University of Science and Technology of China Hefei 230026 China Department of Physics Xinjiang Normal University Urumqi 830054 China Hefei National Laboratory for Physical Sciences at Microscale Chinese Academy of Sciences Hefei 230026 China

The precursor powders of LuAG∶Ce3+ transparent ceramics were synthesized by solvo-thermal *** crystal structure and morphology of powders were analyzed by means of Fourier transform infra-red spectroscopy,X-ray diffraction and scanning electron *** precursor powders were sintered into transparent ceramics in vacuum and then in nitrogen without any *** surface morphology of the transparent unpolished ceramics was characterized using scanning electron *** factors that affect the transparency of ceramics were *** UV-Vis fluorescence excitation and emission spectra of LuAG∶Ce3+ transparent ceramics were *** vacuum ultraviolet spectra of transparent ceramics were investigated using the synchrotron radiation as the excitation *** excitation mechanism of Ce3+ was discussed at different excitation wavelength.

关键词： Solvo-thermal LuAG∶Ce3+ Transparent ceramics Photoluminescence

Different crystallinity of poly(d,l-lactide-co-p-dioxanone) copolymers acquired by control of chain microstructure

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Chinese Chemical Letters 2009年第12期20卷 1506-1509页

作者： Hui Zhen Zhao Jian Yuan Hao Cheng Dong Xiong Xian mo deng Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 China School of Microeletronics and Solid State Electronics University of Electronic Science and Technology of China Chengdu 610054 China Graduate School of Chinese Academy of Sciences Beijing 100039 China

Poly（d,l-lactide-co-p-dioxanone）（P（LA-co-PDO）） copolymers with different chain microstructures were synthesized by onestep or two-step bulk ring-opening polymerizations of d,l-lactide （LA） and p-dioxanone （PDO） monomers using stannous octoate [Sn（Oct）2]/n-dodecanol as the initiating system. The average sequence lengths of the lactidyl （LLA） and dioxanyl （LpDo） units were calculated from the ^1H NMR spectra. It was found that both LLA and Lpoo values from the two-step syntheses were significantly longer than those from the corresponding one-step syntheses, indicating more blocky structure achieved for the twostep copolymers. Corresponding to this difference in microstructure, the two-step copolymers were semi-crystalline, while the one-step copolymers were completely amorphous. In conclusion, the crystallinity of P（LA-co-PDO） copolymers could be adjusted conveniently to meet specific applications by changing the microstructure of the copolymers via different polymerization routes.

关键词： Poly(d,l-lactide-co-p-dioxanone) Copolymerization Chain microstructure Crystallinity