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54篇 您的检索式:作者名="Chenglu"
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1Analysis on Frequency and Density of Microsatellites in Coding Seauences of Several Eukarvotic Genomes显示文摘Microsatellites or simple sequence repeats (SSRs) have been found in most organisms during the last decade. Since large-scale sequences are being generated, especially those that can be used to search for microsatellites, the development of these markers is getting more convenient. Keeping SSRs in viewing the importance of the application, available CDS (coding sequences) or ESTs (expressed sequence tags) of some eukaryotic species were used to study the frequency and density of various types of microsatellites. On the basis of surveying CDS or EST sequences amounting to 66.6 Mb in silkworm, 37.2 Mb in fly, 20.8 Mb in mosquito, 60.0 Mb in mouse, 34.9 Mb in zebrafish and 33.5 Mb in Caenorhabditis elegans, the frequency of SSRs was 1/1.00 Kb in silkworm, 1/0.77 Kb in fly, 1/1.03 Kb in mosquito, 1/1.21 Kb in mousey 1/1.25 Kb in zebrafish and 1/1.38 Kb in C. Elegans. The overall average SSR frequency of these species is 1/1.07 Kb. Hexanucleotide repeats (64.5%-76.6%) are the most abundant class of SSR in the investigated species, followed by trimeric, dimeric, tetrameric, monomeric and pentameric repeats. Furthermore, the A-rich repeats are predominant in each type of SSRs, whereas G-rich repeats are rare in the coding regions.BinLi QingyouXia ChengLu ZeyangZhou ZhonghuaiXiang 2004Genomics, Proteomics & Bioinformatics2004,2,1:14
2Preparation of activated carbon from cattail and its application for dyes removal显示文摘Activated carbon was prepared from cattail by H3PO4 activation. The effects influencing the surface area of the resulting activated carbon followed the sequence of activated temperature > activated time > impregnation ratio > impregnation time. The optimum condition was found at an impregnation ratio of 2.5, an impregnation time of 9 hr, an activated temperature of 500°C, and an activated time of 80 min. The Brunauer-Emmett-Teller surface area and average pore size of the activated carbon were 1279 m2/g and 5.585 nm, respectively. A heterogeneous structure in terms of both size and shape was highly developed and widely distributed on the carbon surface. Some groups containing oxygen and phosphorus were formed, and the carboxyl group was the major oxygen-containing functional group. An isotherm equilibrium study was carried out to investigate the adsorption capacity of the activated carbon. The data fit the Langmuir isotherm equation, with maximum monolayer adsorption capacities of 192.30 mg/g for Neutral Red and 196.08 mg/g for Malachite Green. Dye-exhausted carbon could be regenerated effectively by thermal treatment. The results indicated that cattail-derived activated carbon was a promising adsorbent for the removal of cationic dyes from aqueous solutions.Qianqian Shi Jian Zhang Chenglu Zhang Cong Li Bo Zhang Weiwei Hu Jingtao Xu Ran Zhao 2010Journal of Environmental Sciences2010,22,1:13
3Early evaluation of growth traits of Larix kaempferi clones显示文摘Early selection is an important method to shorten the breeding cycle for tree species, which may differ in the time for early selection.To evaluate the early selected time for Larix kaempferi, tree height and diameter at breast height of 57 L.kaempferi clones were measured over many different growth years.The results indicated that, except for age × clone interaction for diameter at breast height(P = 0.741), there were significant differences among all variation sources(P < 0.01).The coefficient of phenotypic variation ranged from 14.89 to 35.65%for height and from 19.17 to 23.86% for diameter at breast height in different growth years.The repeatability of height and of diameter at breast height among clones was high,ranging from 0.6181 to 0.8531(height) and from 0.8443 to0.8497(diameter at breast height), in different growth years.There were significant positive correlations between all pairs of growth traits except between height in the 2 nd growth year and height in the 30 th growth year; and between height in the 2 nd growth year × diameter at breast height in the 30 th growth year.With a comprehensive evaluation method and a selection ratio of 10%, L65,L1, L62, L9, L15, and L78 were selected as excellent clones in the 30 th growth year.Their average values of height and diameter at breast height were 9.81 and 16.57%higher than the overall average, representing genetic gains of 6.46 and 13.99%, respectively.This study provides a theoretical foundation for the genetic improvement of L.kaempferi.Yanyan Pan Shuchun Li Chenglu Wang Wenjun Ma Guiyou Xu Lili Shao Kailong Li Xiyang Zhao Tingbo Jiang 2018Journal of Forestry Research2018,29,4:10
4Sorption removal of cephalexin by HNO_3 and H_2O_2 oxidized activated carbons显示文摘Cephalexin's traces within pharmaceutical effluents have toxic impact toward ecological and human health.Low-cost activated carbon derived from Trapa natans husk was oxidized with hydrogen peroxide and nitric acid,and tested for their ability to remove cephalexin from aqueous solutions.Oxidization with H2O2 showed negative effect on the cephalexin sorption,whereas HNO3 oxidization improved the adsorption.The cephalexin adsorption isotherms on the native and HNO3 oxidized carbons correlated well with the Freundlich equation while their kinetics followed the pseudo-second order model.The removal of cephalexin by the native and HNO3 oxidized carbons was found to be most favored at low ionic strength and strong acidic conditions.Based on the thermal and FTIR analyses,the interaction mechanisms of the interaction between cephalexin and the carbons were proposed.Electrostatic attraction,hydrophobic interaction and chemical bonding with surface functional groups were demonstrated as primary mechanisms for cephalexin removal.The nitrogen functionalities on the carbon surface were considered to be an important factor affecting the adsorption process.LIU WeiFeng XIE HuiJun ZHANG Jian ZHANG ChengLu 2012Science China Chemistry2012,55,9:7
5Machine Learning Empowered Beam Management for Intelligent Reflecting Surface Assisted MmWave Networks显示文摘Recently,intelligent reflecting surface(IRS)assisted mmWave networks are emerging,which bear the potential to address the blockage issue of the millimeter wave(mmWave)communication in a more cost-effective way.In particular,IRS is built by passive and programmable electromagnetic elements that can manipulate the mmWave propagation channel into a more favorable condition that is free of blockage via judicious joint base station(BS)-IRS transmission design.However,the coexistence of IRSs and mmWave BSs complicates the network architecture,and thus poses great challenges for efficient beam management(BM)that is one critical prerequisite for high performance mmWave networks.In this paper,we systematically evaluate the key issues and challenges of BM for IRS-assisted mmWave networks to bring insights into the future network design.Specifically,we carefully classify and discuss the extensibility and limitations of the existing BM of conventional mmWave towards the IRS-assisted new paradigm.Moreover,we propose a novel machine learning empowered BM framework for IRS-assisted networks with representative showcases,which processes environmental and mobility awareness to achieve highly efficient BM with significantly reduced system overhead.Finally,some interesting future directions are also suggested to inspire further researches.Chenglu Jia Hui Gao Na Chen Yuan He 2020China Communications2020,17,10:5
6Sorption of norfloxacin from aqueous solutions by activated carbon developed from Trapa natans husk显示文摘The low-cost activated carbon was prepared from a renewable aquatic plant residue,Trapa natans husk,and tested for its ability to remove norfloxacin (NOR) from aqueous solutions. Physical and chemical properties of the Trapa natans husk activated carbon (TAC) were characterized. TAC has a large surface area of 1274 m2/g and mesoporous structure. Carboxylic and hydroxyl groups contributed to the sorption of NOR onto TAC but they were not the most important factors in the sorption process. The rates of adsorption followed the pseudo-second-order kinetics and the overall rate of NOR uptake was controlled by both external mass transfer and intro particle diffusion during the entire adsorption period. The equilibrium data fitted well with the Freundlich and Tempkin models and the sorption was found to be a favorable process. The adsorption of NOR by TAC was strongly dependent on the solution pH. Electrostatic interaction and hydrophobic interaction were proposed to be the principal NOR sorption mechanism.XIE HuiJun LIU WeiFeng ZHANG Jian ZHANG ChengLu REN Liang 2011Science China Chemistry2011,54,5:4
7Reducing the yield asymmetry in Mg-5Li-3Al-2Zn alloy by hot-extrusion and multi-pass rolling显示文摘Reducing the yield asymmetry is very important concern for wrought Mg-Li alloys.In this study,Mg-5Li-3Al-2 Zn(LAZ532)alloy was successfully produced by hot-extrusion followed by multi-pass rolling at 573 K.Microstructure evolution,mechanical properties and yield asymmetry reducing of LAZ532 alloys at different rolling passes were studied.By observing microstructure using transmission electron microscopy showed that a small amount of ultra-fine Al Mg_(4)Zn_(11)and nano Li_(3)Al_(2) phases existed in the alloy.With the increasing of rolling passes,the grains of the alloys were obviously refined,and comprehensive mechanical properties were dramatically improved.Meanwhile,it also showed an excellent tension and compression yield symmetry(TYS/CYS was about 1).The results showed that the combined action of the weak{0001}basal lamellar texture,grain refinement and addition of Li element could effectively improve the yield symmetry.Furthermore,based on theoretical analysis,the yield strength in the alloys mainly depended on the strengthening contributions of LAGBs and HAGBs,and strengthening effect of HAGBs most(~50%)to the yield strength improvement.Xiaoqiang Li Liang Ren Qichi Le Lei Bao Peipeng Jin Ping Wang Chunlong Cheng Xiong Zhou Chenglu Hu 2021Journal of Magnesium and Alloys2021,9,3:4
8Investigation of Portevin–Le Chatelier effect in rolled α-phase Mg-Li alloy during tensile and compressive deformation显示文摘Avoiding the Portevin-Le Chatelier(PLC)effect is very important concern for wrought Mg-Li alloys.In this study,the special PLC effect was found in rolled Mg-5Li-3Al-2Zn(LAZ532)alloy during tensile and compressive deformation.By observing microstructure evolution of the alloy during tensile and compressive deformation,it was found that prismaticand pyramidalslips were activated during tensile deformation,resulting in plenty of dislocation accumulation.In the deformation process after compressive yielding,the deformations in coarse grains and fine grains were dominated by{1012}extension twinning and grain boundary slip,respectively.Based on experimental result analysis,the sudden appearance of PLC effect in the later stage of axial tensile deformation(along rolled direction)was caused by interaction between solute atoms and dislocations.In the process of axial compressive deformation(along rolled direction),PLC effect presented the complex and changeable phenomenon of appeared-disappeared-appeared,which was mainly caused by the continuous nucleation of twin in the material,the activation of grain boundary slip and the shear deformation of twin,respectively.Xiaoqiang Li Chunlong Cheng Qichi Le Lei Bao Peipeng Jin Ping Wang Liang Ren Hang Wang Xiong Zhou Chenglu Hu 2020Journal of Materials Science & Technology2020,52,17:3
9Reactive Deposition Epitaxial Growth ofβ-FeSi_(2) Film on Si(001):in situ Observation by Reflective High Energy Electron Diffraction显示文摘Reactive deposition epitaxial growth ofβ-FeSi_(2) film on Si(001)has been studied by in situ observation of reflective high energy electron diffraction.Metastable strained phase was observed at initial stages.Surface roughness due to the islanding was observed during the deposition.The existed great tendency to transform the alignment of the orientation of crystallites into random as the thickness of deposited iron increased.WANG Lianwei LIN Chenglu SHEN Qinwo NI Rushan ZOU Shichang 1995Chinese Physics Letters1995,12,10:2
10Engineered biocontainable RNA virus vectors for non-transgenic genome editing across crop species and genotypes显示文摘CRISPR/Cas genome-editing tools provide unprecedented opportunities for basic plant biology research and crop breeding.However,the lack of robust delivery methods has limited the widespread adoption of these revolutionary technologies in plant science.Here,we report an efficient,non-transgenic CRISPR/Cas delivery platform based on the engineered tomato spotted wilt virus(TSWV),an RNA virus with a host range of over 1000 plant species.We eliminated viral elements essential for insect transmission to liberate genome space for accommodating large genetic cargoes without sacrificing the ability to infect plant hosts.The resulting non-insect-transmissible viral vectors enabled effective and stable in planta delivery of Cas12a and Cas9 nucleases as well as adenine and cytosine base editors.In systemically infected plant tissues,the deconstructed TSWV-derived vectors induced efficient somatic gene mutations and base conversions in multiple crop species with little genotype dependency.Plants with heritable,bi-allelic mutations could be readily regenerated by culturing the virus-infected tissues in vitro without antibiotic selection.Moreover,we showed that antiviral treatment with ribavirin during tissue culture cleared the viral vectors in 100%of regenerated plants and further augmented the recovery of heritable mutations.Because many plants are recalcitrant to stable transformation,the viral delivery system developed in this work provides a promising tool to overcome gene delivery bottlenecks for genome editing in various crop species and elite varieties.Qian Liu Chenglu Zhao Kai Sun Yinlu Deng Zhenghe Li 2023Molecular Plant2023,16,3:2
11Morphology,Chemistry and U-Pb Geochronology of Zircon Grains in Quartz Monzodiorite from the Sunzhuang Area,Fanshi County,Shanxi Province显示文摘The morphology, REE geochemistry and U-Pb geochronology of zircons from quartz monzodiorite in the Sunzhuang area, Fanshi County, Shanxi Province are presented in this study. The zircon crystals can be classified into four main types as: AB, L, S and P, and 24 subtypes such as AB4, AB5, L5, and S3. The maximum crystallization temperature of zircon was estimated as 850°C, with the minimum of 550°C. The peak temperatures of the zircon crystallization range from 650°C to 700°C. The abundances of Th and U in the zircon grains show large variation with the Th/U values > 0.4. The Th and U values also show a positive correlation in most zircons. The REE abundance of zircon in the quartz monzodiorite ranges from 280.4 ppm to 2143 ppm with an average of 856.4 ppm. The chondrite normalized zircon REE patterns show two types, one is characterized by HREE enrichment and LREE depletion with positive Ce-anomaly and negative Eu-anomaly whereas the other is HREE enriched and LREE depleted with negative Eu-anomaly but without positive Ce-anomaly, and relatively flat patterns. The LA-ICP-MS U-Pb geochronology on the zircons yields a mean age of 133±0.87 Ma. Our data on zircon morphology, composition and U-Pb geochronology reveal that the parent magma of the quartz monzodiorite which was emplaced during late Yanshanian had a mixed crust-mantle source, with crustal components dominating. The magma is inferred to have been water rich and alkaline with initial high oxygen fugacity. Post-magmatic hydrothermal activity occurred under relatively reducing conditions which was conductive for gold precipitation in the Yixingzhai gold deposit.SONG Jiye LI Shengrong QIN Mingkuan CAI Yuqi LUO Junyan ZHANG Juquan LI Chenglu SANTOSH M. 2015Acta Geologica Sinica(English Edition)2015,89,4:2
12Progress in drug delivery system for fibrosis therapy显示文摘Fibrosis is a necessary process in the progression of chronic disease to cirrhosis or even cancer,which is a serious disease threatening human health.Recent studies have shown that the early treatment of fibrosis is turning point and particularly important.Therefore,how to reverse fibrosis has become the focus and research hotspot in recent years.So far,the considerable progress has been made in the development of effective anti-fibrosis drugs and targeted drug delivery.Moreover,the existing research results will lay the foundation for more breakthrough delivery systems to achieve better anti-fibrosis effects.Herein,this review summaries anti-fibrosis delivery systems focused on three major organ fibrotic diseases such as liver,pulmonary,and renal fibrosis accompanied by the elaboration of relevant pathological mechanisms,which will provide inspiration and guidance for the design of fibrosis drugs and therapeutic systems in the future.Lei Xing Xin Chang Lijun Shen Chenglu Zhang Yatong Fan Chongsu Cho Zhiqi Zhang Hulin Jiang 2021Asian Journal of Pharmaceutical Sciences2021,16,1:2
13Adsorption of malachite green from aqueous solution onto carbon prepared from Arundo donax root 显示文摘Zhang Jian Li Yan Zhang Chenglu 2008Journal of Hazardous Materials2008,15,:1
14Security analysis of remote password authentication schemes for multi-server ar- chitecture using neural networks显示文摘Liu Chenglian Lin Chenglu Ham Lien 2012Advanced Science Letters2012,7,1:1
15Low temperature preparation of barium titanate tin films by a novel sol-gel-hydrothermal method显示文摘Zeng Jianming Lin Chenglu Li Jinhua 1998Materials Letters1998,38,:1
16The new technology for improving heat effect of pyroelectric infrared detector 显示文摘Song Zhitang Feng Songlin Lin Chenglu 2004Ceramics International2004,30,:1
17Pharmacokinetic study ofmultiple active constituents after oral gavage of Guizhi decoctionin rats using a LC-MS/MS method显示文摘Chen Yingrong Gao Chenglu 2013European journal of drugmetabolism and pharmacokinetics2013,38,4:1
18Migration of Chinese consumption values: Traditions, modernization, and cultural renaissance 显示文摘Wang Chenglu Lin Xiaohua 2009Journal of Business Ethics2009,88,3:1
19A comparison of pulsed-laser-deposited and ion-beam-enhan-ced-deposited AlN thin films for SOI application显示文摘Men Chuanling Lin Chenglu 2006Materials Science and Engineering:B2006,133,13:1
20Low temperature preparation of barium titanate thin films by a novel sol-gel-hydrothermal method显示文摘Zeng Jianming Lin Chenglu Li Jinhua 1998Materials Letters1998,38,:1
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