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Growth pattern of MAO coating under constant voltage–current two-step power mode 认领 引用 被引量：1
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作者 Shu-fan Zhou Liang-yu Chen +5 位作者 Wei-gang Lv Jun-jie Gu Fei Ye Dubovyy Oleksandr Sheng Lu Ze-xin Wang 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2025年第5期1245-1262,共18页
A custom micro-arc oxidation(MAO)apparatus is employed to produce coatings under optimized constant voltage–current two-step power supply mode.Various analytical techniques,including scanning electron microscopy,conf... A custom micro-arc oxidation(MAO)apparatus is employed to produce coatings under optimized constant voltage–current two-step power supply mode.Various analytical techniques,including scanning electron microscopy,confocal laser microscopy,X-ray diffraction,X-ray photoelectron spectroscopy,transmission electron microscopy,and electrochemical analysis,are employed to characterize MAO coatings at different stages of preparation.MAO has MgO,hydroxyapatite,Ca3(PO4)2,and Mg2SiO4 phases.Its microstructure of the coating is characterized by"multiple breakdowns,pores within pores",and"repaired blind pores".The porosity and the uniformity of MAO coating first declines in the constant voltage mode,then augments while the discharge phenomenon takes place,and finally decreases in the repair stage.These analyses reveal a four-stage growth pattern for MAO coatings:anodic oxidation stage,micro-arc oxidation stage,breakdown stage,and repairing stage.During anodic oxidation and MAO stages,inward growth prevails,while the breakdown stage sees outward and accelerated growth.Simultaneous inward and outward growth in the repair stage results in a denser,more uniform coating with increased thickness and improved corrosion resistance. 展开更多
关键词 Micro-arc oxidation Biomedical material Corrosion resistance Growth pattern Two-step power mode
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Clinical implications and mechanism of histopathological growth pattern in colorectal cancer liver metastases 认领 引用 被引量：3
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作者 Bing-Tan Kong Qing-Sheng Fan +2 位作者 Xiao-Min Wang Qing Zhang Gan-Lin Zhang 《World Journal of Gastroenterology》 SCIE CAS 2022年第26期3101-3115,共15页
Liver is the most common site of metastases of colorectal cancer,and liver metastases present with distinct histopathological growth patterns(HGPs),including desmoplastic,pushing and replacement HGPs and two rare HGPs... Liver is the most common site of metastases of colorectal cancer,and liver metastases present with distinct histopathological growth patterns(HGPs),including desmoplastic,pushing and replacement HGPs and two rare HGPs.HGP is a miniature of tumor-host reaction and reflects tumor biology and pathological features as well as host immune dynamics.Many studies have revealed the association of HGPs with carcinogenesis,angiogenesis,and clinical outcomes and indicates HGP functions as bond between microscopic characteristics and clinical implications.These findings make HGP a candidate marker in risk stratification and guiding treatment decision-making,and a target of imaging observation for patient screening.Of note,it is crucial to determine the underlying mechanism shaping HGP,for instance,immune infiltration and extracellular matrix remodeling in desmoplastic HGP,and aggressive characteristics and special vascularization in replacement HGP(rHGP).We highlight the importance of aggressive features,vascularization,host immune and organ structure in formation of HGP,hence propose a novel"advance under camouflage"hypothesis to explain the formation of rHGP. 展开更多
关键词 Colorectal cancer liver metastases Histopathological growth pattern Desmoplastic histopathological growth pattern Replacement histopathological growth pattern Prognostic value Vessel co-option
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Research on the Growth Patterns and Training Paths of Excellent Counselors in Private Colleges 认领 引用
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作者 Jian Du 《Journal of Contemporary Educational Research》 2025年第4期184-192,共9页
With the rapid development of private higher education,the construction of counselor teams in private universities has become increasingly important.This paper focuses on outstanding counselors in private universities... With the rapid development of private higher education,the construction of counselor teams in private universities has become increasingly important.This paper focuses on outstanding counselors in private universities,delving into their growth patterns and proposing targeted training paths based on this analysis.By reviewing relevant theories and analyzing case studies of excellent counselors,it is found that outstanding counselors in private universities exhibit stage-specific characteristics during their development,influenced by personal traits,school environment,career progression,and other factors.In terms of training approaches,efforts should be made to improve selection mechanisms,strengthen training systems,provide career development support,and create a positive work atmosphere,all aimed at enhancing the overall quality of the counselor team in private universities and better serving student growth and institutional development. 展开更多
关键词 Private colleges and universities Counselors Growth patterns Training paths
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Association between mandibular posterior alveolar morphology and growth pattern in a Chinese population with normal occlusion 认领 引用 被引量：8
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作者 Min HAN Rong-yang WANG +8 位作者 Hong LIU Xiu-juan ZHU Fu-lan WEI Tao LV Na-na WANG Li-hua HU Guo-ju LI Dong-xu LIU Chun-ling WANG 《Journal of Zhejiang University-SCIENCE B》 SCIE CAS CSCD 2013年第1期25-32,共8页
Objective:To investigate the relationship between growth patterns and mandibular posterior tooth-alveolar bone complex morphology in a Chinese population with normal occlusion.Methods:Forty-five patients with normal o... Objective:To investigate the relationship between growth patterns and mandibular posterior tooth-alveolar bone complex morphology in a Chinese population with normal occlusion.Methods:Forty-five patients with normal occlusion(23 males,22 females) were included in this study.Among these patients,20 displayed the vertical growth pattern,and 20 had the horizontal growth pattern,while the remaining patients displayed the average growth pattern.All of the patients underwent dental cone beam computed tomography(CBCT),which included the region of the mandibular posterior teeth and the alveolar.A linear regression analysis and a correlation analysis between the facial height index(FHI) and the alveolar bone morphology were performed.Results:The inclination of the molars,the thickness of the cortical bone,and the height of the mandibular bone differed significantly between patients with the horizontal growth pattern and those with the vertical growth pattern(P<0.05).Significant positive correlations were found between:the FHI and the inclination of the molars;the FHI and the thickness of the cortical bone;and the FHI and the height of the mandibular bone.Conclusions:The mandibular posterior tooth-alveolar bone complex morphology may be affected by growth patterns. 展开更多
关键词 Cone beam computed tomography （CBCT） Growth pattern Alveolar morphology Normal occlusion
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Growth Pattern and Its Indication of Spheroidal Nano-Micro Crystal Aggregates of Pyrite in the Baiyunpu Pb-Zn Polymetallic Deposit, Central Hunan 认领 引用 被引量：3
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作者 GAO Shang HUANG Fei +6 位作者 GU Xiangping LI Xiangyou MENG Lin LIU Rui SUN Li GAO Wenyuan YU Huantao 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2014年第6期1770-1783,共14页
The Baiyunpu deposit lies in the southwest plunging Dachengshan anticline in central Hunan, which is a large Pb-Zn polymetallic deposit. The orebodies were surrounded by the Qiziqiao Formation limestone in the Middle ... The Baiyunpu deposit lies in the southwest plunging Dachengshan anticline in central Hunan, which is a large Pb-Zn polymetallic deposit. The orebodies were surrounded by the Qiziqiao Formation limestone in the Middle Devonian, and its geological occurrence is consistent with the wall rocks. A large number of spheroidal pyrite aggregates are found unevenly distributed in the ores. The spheroidal aggregates are made up of kernels and concentric rings. The kernels are composed of approximately epigranular pyrite nanocrystals, while the rings are composed of accumulated pyrite microcrystals growing along the radial direction. The spheroidal pyrite aggregate and its outer zones can be divided into five areas（A–E）. The results of electron probe micro analysis（EPMA） show that from the zone A1 to B, Co/Ni 〈1, the sum of Co and Ni is 0.08%–0.26%, S/Fe increases from 2.06 to 2.15. While from the zone C to E, Ni cannot be detected and S/Fe decreases from 2.22 to 2.08. Powder X-ray diffraction（XRD） analysis in the micro zone shows obvious crystalline characteristics in the aggregates. Moving from the inside outwards, the maximum diffraction peak intensity of the（111） and（220） crystal planes of pyrite increases, and the crystallinity improves. The degree of change in the（111） plane is the most prominent. Considering the theory of crystal growth along with the geologic features of the depositional environment where the spheroidal pyrite aggregates developed, we confirm that the spheroidal aggregates are the result of nano-micro crystalline gathering and growth occurring by the following sequence of processes：nano-crystalline nucleation and growth, gathering into a ball, oriented growth of microcrystals, continuous accumulation, and adjustment of grain boundaries. The formation of the spheroidal pyrite aggregates in the late Qiziqiao Formation of the Middle Devonian occurred in a neutral to weak alkaline and reductive sedimentary environment in the normal oxygen-rich shallowwater carbonate platform edge. The variations in the S/Fe ratio and crystallisation characteristics indicate that during pyrite crystal growth, the sulphur fugacity was high locally and rose constantly, the degree of supersaturation decreased locally and the growth environment was stable relatively. 展开更多
关键词 Baiyunpu Pb-Zn polymetallic deposit pyrite nano-micro crystal spheroidal aggregates growth pattern indication significance
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Abundance and Distribution,Growth Pattern,Sex Ratio and Gonadosomatic Index(GSI)of Liza falcipinnis(Valenciennes,1836)from Ojo Axis of Badagry Creeks,Lagos,Nigeria 认领 引用
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作者 Adeboyejo O.A. Clarke E.O. +3 位作者 Hammed A.M. Whenu O.O. Abayomi J.P. Olarewaju O.M. 《Sustainable Marine Structures》 2021年第2期39-49,共11页
A study on seasonal abundance,morphometric and meristic data,growth pattern,condition fector,sex ratio and gonadosomatic index of Liza falcip-innis(Wlenciennes,1836)from the Ojo axis of Badagry creek,Nigeria was condu... A study on seasonal abundance,morphometric and meristic data,growth pattern,condition fector,sex ratio and gonadosomatic index of Liza falcip-innis(Wlenciennes,1836)from the Ojo axis of Badagry creek,Nigeria was conducted from May 2019 to March 2020.A total of 1012 species were randomly selected,having 499 females and 513 males.The length frequency analysis and length-weight relationships(LWR)were determined.Sex ratio was determined by Chi-square analysis.The results showed that morphometric data are:0.5-2.5 mm for ED,2.1-12 mm for HL,1.7-8.1 mm for HD,2.5-11.7 for BD,2.6-233.3 mm for TL and 9.23-1006 g for BW for the combined sexes.The slope(b)shows an allometric growth pattern.The intercept'a'and slope'b'of the LWR(LogW=a+bLogL)were Log W=15.39+0.34 LogL(r=0.54)for combined sexes,Log W=12.49+0.02 log L(r=0.38)for males and Log W=18.23+0.01 log L(r=0.16)for females.The length frequency distribution indicated that species were dominated by two year classes(Ages 1 and 2).Condition factors were generally low.The values ranged between 0.68-0.85 for combined sexes.The gonadosomatic index for female was highest in August,2019(17.77%)with Mean±SD of 2.88±0.75;which indicated the peak of spawning period in the study area.Sex ratio difference was significant(P<0.05).Sexual differences were significant;the females are phenotypically larger than the male. 展开更多
关键词 Growth pattern Length-weight-relationships(LWR) Gonadosomatic index(GSI) Condition factor Creeks Fish biology
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Study on Clonal Growth Pattern of Sabina vulgaris in Mu Us Sandland 认领 引用 被引量：3
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作者 ZhangGuosheng LiuHaidong +3 位作者 LiuMeizhent WangLinhe ZhuJinzhao Jirigele 《Forestry Studies in China》 2003年第2期10-16,共7页
The clonal growth pattern of Sabina vulgaris, a coniferous clonal plant in Mu Us sandland, Inner Mongolia Autonomous Region was surveyed. The results showed that with the stolon extending, internode length and branchi... The clonal growth pattern of Sabina vulgaris, a coniferous clonal plant in Mu Us sandland, Inner Mongolia Autonomous Region was surveyed. The results showed that with the stolon extending, internode length and branching angle decreased, the branching intensity increased gradually within the 3 m range from the edge of the shrub to its center along the stolon. Internode length, branching intensity and branching angle were 5.9 cm, 4.4 and 55.3°in the shrub, and 1.6 cm, 13.7 and 38.3°at the edge of the shrub, respectively. The clonal architecture exhibited plasticity. The internode length, branching intensity and ramet length changed with an exponential model with extention of the stolon. The stolon of S. vulgaris was monopodial branching, and each ramet should possess more than 3 adventitious roots. Ramets could take on the phenomenon of 搒elf-thinning?with clonal growth. There was a prior grade in allocation of the nutrients gained from heterogeneous space. The clonal architecture of S. vulgaris was the 搈ixed?type. 展开更多
关键词 vulgaris clonal plant growth pattern stolon Mu Us sandland
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The Growth Pattern of Chamaecyparis obtuseStand along Longevity in Gyeongnam Province, South Korea 认领 引用
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作者 Moon Hyun Shik Tamirat Solomon 《Open Journal of Forestry》 2020年第4期377-387,共11页
Tree growth is affected by environmental factors, climate condition and tree age. The objective of this study was to evaluate the growth patterns of Chamaecyparis obtusa (C. obtusa) stand in the Gyeongnam province. Da... Tree growth is affected by environmental factors, climate condition and tree age. The objective of this study was to evaluate the growth patterns of Chamaecyparis obtusa (C. obtusa) stand in the Gyeongnam province. Data was collected from two cities and one county by using sample quadrats of 20 * 20 m. A total of 11 quadrats were used to collect tree height, diameter at the breast height (DBH), annual growth rings and soil data. The data analysis of soil moisture content, pH, organic matter (%), EC (cmol + /kg of soil), and available phosphorous was conducted. Growth ring was analyzed by using computer based software and the ages of the trees were identified. Average growth of height and DBH was computed from the surveyed data and annual growth of each tree was assessed by computer based reading of annual growth rings. The results of the study revealed that tree growth showed a reducing trend along the longevity. It was identified that soil pH, age, variation in annual average temperature, and altitude were the main factors related with growth of C. obtusa trees along the life of the stand. 展开更多
关键词 Growth Pattern Soil Properties Longevity Climate Change Growth Rings
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Can Emerging Economies Catch-up Sustainably?-An Analysis of BRICS' Economic Growth Pattern 认领 引用
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作者 林跃勤 《中国经济学人（中英文）》 2012年第1期106-115,共10页
The BRICS （Brazil, Russia, India, China and South Africa） and other emerging economies have become a driving global force for the past twenty years. However, their growth patterns are obsolete, impeding the quality ... The BRICS （Brazil, Russia, India, China and South Africa） and other emerging economies have become a driving global force for the past twenty years. However, their growth patterns are obsolete, impeding the quality and competitiveness of their economic growth, while simultaneously threatening the sustainability of their economic convergence with developed nations. Transforming the domestic growth pattern-the solution to the middle-income trap-has therefore become a key priority for each of these economies. This paper presents a comparative analysis of how to transform the pattern of economic growth in BRICS and achieve sustainable economic convergence with a comparative analysis of the pattern of economic growth and problems among BRICS countries. 展开更多
关键词 emerging economies BRICS countries transformation of growth pattern sustaining catch up
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The evaluation of the growth pattern of coal-production in Jiangsu Province and suggestions for its sound development 认领 引用
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作者 ZHAO Yuan WANG Li-shan HAO Li-sha 《Journal of Environmental Science and Engineering》 2008年第10期57-63,共7页
Using Cobb-Douglas production function and Solow Residual, this study establishes a discriminant index to measure the intensive index of coal-production at the section-level, so as to analyze the transfer trend of the... Using Cobb-Douglas production function and Solow Residual, this study establishes a discriminant index to measure the intensive index of coal-production at the section-level, so as to analyze the transfer trend of the growth pattern of Jiangsu＇s coal-production since 1990s. The research shows that the transition of coal production in Jiangsu Province has mainly experienced three phases, which are the quick transition phase from extensive growth to intensive growth （from 1990 to 1994）, the fluctuation phase （from 1995 to 1999）, and the transition back phase from intensive growth to extensive growth （from 2000 to 2003）. On the whole, the coal production in Jiangsu Province nowadays is still featured by extensive growth pattern and largely dependent upon capital inputs. Finally, from the aspect of the technology progress, improving the qualities of labor, changing product structures and improving enterprise management, this study puts forward suggestions on how to transfer the growth pattern of Jiangsu＇s coal-production into intensive type. 展开更多
关键词 coal-production growth pattern discriminant model suggestion
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Resource constraint,sustainable economic growth pattern and transformation of economic system in China 认领 引用
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作者 Wang Yafei Huang Xiaojun 《Ecological Economy》 2007年第1期97-105,共9页
Over the past 20 years, China has made spectacular achievements in economic growth as well as in thetransformation of economic growth pattern. Industrial structure is being updated, and technology is playing a more an... Over the past 20 years, China has made spectacular achievements in economic growth as well as in thetransformation of economic growth pattern. Industrial structure is being updated, and technology is playing a more andmore important role in economic development. The energy and resource consumption in many industries and enterprisesare reducing. However, we should realize that there are still many problems in changing the economic growth pattern,such as high input, high consumption, high discharge, inharmony, recycling difficulty, and low efficiency, which havegreatly impaired and restrict Chinese economic development. Therefore, the fundamental change of the economic growthpattern is inevitable. Based on the analysis on the status quo and the exploit of resources, this paper suggests that thetransformation from unsustainable to sustainable growth is the only choice in changing the economic growth pattern. Inaddition, the transformation should not completely rely on the fundamental effects of market mechanism. We should makefull use of the power of governments to speed up the transformation of economic system. 展开更多
关键词 Economic growth pattern Sustainable development Sustainable economic growth pattern Transformation of economic system
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Comparing ecological memory effects of the bimodal radial growth in the Qinling Mountains and Mediterranean forests 认领 引用
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作者 Huiyue Yan Xiaomin Zeng +4 位作者 Xiaohong Liu Yu Xue Quanxi Li Lingnan Zhang Jun Liu 《Forest Ecosystems》 SCIE CAS CSCD 2026年第1期131-143,共13页
Intra-annual climatic variability plays a critical role in regulating wood formation dynamics during the growing season,particularly in seasonally arid regions—such as the Qinling Mountains,China,and Mediterranean fo... Intra-annual climatic variability plays a critical role in regulating wood formation dynamics during the growing season,particularly in seasonally arid regions—such as the Qinling Mountains,China,and Mediterranean forests—where trees exhibit bimodal radial growth patterns as an adaptive response to water stress.While these growth patterns reflect immediate climatic conditions,the role of ecological memory,specifically vegetation growth carryover(VGC)and lagged climate effects(LCEs),remains poorly quantified.We employed the Vaganov–Shashkin(VS)model to analyze intra-annual bimodal growth patterns in two regions and used a vector autoregressive model with impulse response functions to assess the duration and intensity of VGC and LCE on tree-ring growth and remote sensing vegetation indices(leaf area index(LAI)and gross primary productivity(GPP)).Our results revealed bimodal growth patterns with spring and autumn peaks,but the autumn peak occurred earlier in the Qinling Mountains(August–October)than in Mediterranean forests(late September–October).VGC exerted the strongest influence on tree-ring growth in the first year,diminishing significantly after eight years in both regions(p<0.01).Tree-ring growth exhibited positive LCE responses to precipitation and soil moisture but negative responses to temperature(p<0.05).Remote sensing indices(LAI and GPP)displayed stronger VGC effects in the Qinling Mountains than in Mediterranean forests.While both LAI and GPP responded positively to soil moisture,temperature-induced LCE was positive in the Qinling Mountains but negative in the Mediterranean forests(p<0.05).Overall,VGC was the dominant ecological memory effect in both regions.Our results suggest that coupling the VGC and LCE of multiple vegetation growth indicators at multiple scales has the potential to improve the accuracy of global dynamic vegetation models. 展开更多
关键词 Tree-ring width Bimodal growth patterns Vaganov-Shashkin(VS)model Vegetation growth carryover Lagged climate effects(LCEs)
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FP-Growth算法的实验室安全事故成因分析与管理建议 认领 引用
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作者 何杨 王东梅 +3 位作者 王舒涵 唐玥 谭鑫 龚正君 《实验室研究与探索》 CAS 北大核心 2026年第7期239-244,共6页
实验室安全事故成因复杂,现有算法在系统解析事故多因素关联方面存在不足。对此,基于2008—2023年间全球实验室安全事故的时空分布特征,结合FP-Growth算法构建安全隐患因素识别模型,系统评估教学科研对事故发生的影响。研究结果表明:16... 实验室安全事故成因复杂,现有算法在系统解析事故多因素关联方面存在不足。对此,基于2008—2023年间全球实验室安全事故的时空分布特征,结合FP-Growth算法构建安全隐患因素识别模型,系统评估教学科研对事故发生的影响。研究结果表明:16年间全球实验室安全事故共有53起,集中于亚洲、欧洲与北美洲,其中中国(含港澳台)占比47%,且以火灾为主;教学科研活动与安全事故具有显著正相关性(R>0.72、p<0.01),且“人”和“管理”是导致实验室事故的主要风险因素。本研究从多因素关联挖掘的角度揭示了实验室安全事故的内在风险结构,为高校实验室安全风险识别与治理体系优化提供了方法支撑与实证依据。 展开更多
关键词 高校实验室 实验室安全 频繁项集增长算法 成因分析 管理建议
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Gladius growth pattern and increment of jumbo squid(Dosidicus gigas)in the tropical Pacific Ocean 认领 引用 被引量：6
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作者 Yi Gong Yunkai Li +2 位作者 Xinjun Chen Xiaodi Gao Ling Chen 《Aquaculture and Fisheries》 2018年第4期156-162,共7页
Gladius is an accepted hard tissue for determining the age,size-specific growth,and trophic dynamics of pelagic squid.However,little is known about the inter-and intra-stock variability of gladius growth pattern and i... Gladius is an accepted hard tissue for determining the age,size-specific growth,and trophic dynamics of pelagic squid.However,little is known about the inter-and intra-stock variability of gladius growth pattern and increment deposition.In this study,the gladius growth patterns with somatic growth and gonad development were evaluated for two geographic stocks of the jumbo squid(Dosidicus gigas)in the tropical Pacific Ocean.The microstructure and periodicity of the gladius growth increments were also investigated.Results showed varied correlations between four gladius morphometric characteristics with dorsal mantle length,while growth in body weight almost followed a power model.Sexual gladius growth patterns occurred with gonad development,possibly due to different biological functions of these gladius parts and sex-specific energetic allocations.Gladius increments were observed formation in the stem and lateral plate and could be consistently enumerated.The daily periodicity of increment deposition,at least over 144 days old,was validated by comparing gladius increments with the ages obtained from the statoliths.The different oceanographic conditions between two areas likely influence the gladius growth and increment deposition and promote higher increment counts in squid from equatorial waters.Above all,these results provided new information on gladius microstructures and growth increment in different stocks of D.gigas and confirmed the use of this tissue for size-specific growth and age determination. 展开更多
关键词 Dosidicus gigas Gladius Growth pattern Increment
Black or Green?Economic Growth Patterns in China under Low Carbon Economy Targets 认领 引用 被引量：2
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作者 尚勇敏 司月芳 曾刚 《Journal of Resources and Ecology》 CSCD 2015年第5期310-317,共8页
Achieving dual goals of economic growth and carbon emission reduction is a major issue in China. In this paper we deifne three economic growth patterns （green growth, brown growth and black growth） according to the ... Achieving dual goals of economic growth and carbon emission reduction is a major issue in China. In this paper we deifne three economic growth patterns （green growth, brown growth and black growth） according to the relationship between economic scale and carbon emissions, and then trace the historical trajectory of economic growth over the last 40 years. Granger causality is used to test China’s economic growth and carbon emission linkage. We argue that green growth means that the rate of carbon emission reduction is faster than the increase in GDP. When carbon intensity reduction is slower than GDP growth, brown growth occurs. Black growth occurs when both carbon intensity and economic scale increase. For China, we denote the four periods of black growth （1971–1977）, brown growth （1978–2001）, black growth （2002–2004）, and brown growth （2004–2010）. Granger causality tests indicate that mutual causality between carbon emissions and economic growth exists in the short term, but not the long term. In order to achieve the goals of economic growth and carbon intensity reduction, it is necessary for China to actively participate in global carbon reduction activities, technological innovation and ecological civilization construction. 展开更多
关键词 low-carbon economy China carbon emissions economic growth pattern Granger causality green growth
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Integrated identification of growth pattern and taxon of bacterium in gut microbiota via confocal fluorescence imaging‐oriented single‐cell sequencing 认领 引用 被引量：1
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作者 Juan Gao Di Sun +2 位作者 Bei Li Chaoyong Yang Wei Wang 《mLife》 2022年第3期350-358,共9页
Despite the fast progress in our understanding of the complex functions of gut microbiota,it is still challenging to directly investigate the in vivo microbial activities and processes on an individual cell basis.To g... Despite the fast progress in our understanding of the complex functions of gut microbiota,it is still challenging to directly investigate the in vivo microbial activities and processes on an individual cell basis.To gain knowledge of the indigenous growth/division patterns of the diverse mouse gut bacteria with a relatively high throughput,here,we propose an integrative strategy,which combines the use of fluorescent probe labeling,confocal imaging with single‐cell sorting,and sequencing.Mouse gut bacteria sequentially labeled by two fluorescent D‐amino acid probes in vivo were first imaged by confocal microscopy to visualize their growth patterns,which can be unveiled by the distribution of the two fluorescence signals on each bacterium.Bacterial cells of interest on the imaging slide were then sorted using a laser ejection equipment,and the collected cells were then sequenced individually to identify their taxa.Our strategy allows integrated acquirement of the growth pattern knowledge of a variety of gut bacteria and their genomic information on a single‐cell basis,which should also have great potential in studying many other complex bacterial systems. 展开更多
关键词 bacterial growth pattern confocal imaging fluorescent D‐amino acid probe in vivo labeling single‐cell sequencing
Experimental measurement of growth patterns on fossil corals:Secular variation in ancient Earth-Sun distances 认领 引用 被引量：4
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作者 ZHANG WeiJia LI ZhengBin LEI Yang 《Chinese Science Bulletin》 2010年第35期4010-4017,共8页
In recent years,much attention has been given to the increase in the Earth-Sun distance,with the modern rate reported as 5-15 m/cy on the basis of astronomical measurements.However,traditional methods cannot measure t... In recent years,much attention has been given to the increase in the Earth-Sun distance,with the modern rate reported as 5-15 m/cy on the basis of astronomical measurements.However,traditional methods cannot measure the ancient leaving rates,so a myriad of research attempting to provide explanations were met with unmatched magnitudes.In this paper we consider that the growth patterns on fossils could reflect the ancient Earth-Sun relationships.Through mechanical analysis of both the Earth-Sun and Earth-Moon systems,these patterns confirmed an increase in the Earth-Sun distance.With a large number of well-preserved specimens and new technology available,both the modern and ancient leaving rates could be measured with high precision,and it was found that the Earth has been leaving the Sun over the past 0.53 billion years.The Earth's semi-major axis was 146 million kilometers at the beginning of the Phanerozoic Eon,equating to 97.6%of its current value.Measured modern leaving rates are 5-14 m/cy,whereas the ancient rates were much higher.Experimental results indicate a special expansion with an average expansion coefficient of 0.57H0 and deceleration in the form of Hubble drag.On the basis of experimental results,the Earth's semi-major axis could be represented by a simple formula that matches fossil measurements. 展开更多
关键词 growth pattern Earth's semi-major axis planetary Hubble expansion
Patterned growth ofβ-Ga2O3 thin films for solar-blind deep-ultraviolet photodetectors array and optical imaging application 认领 引用 被引量：18
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作者 Chao Xie Xingtong Lu +6 位作者 Yi Liang Huahan Chen Li Wang Chunyan Wu Di Wu Wenhua Yang Linbao Luo 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2021年第13期189-196,共8页
Solar-blind deep-ultraviolet(DUV)photodetectors based on Ga2O3have attracted great attention due to their potential applications for many military and civil purposes.However,the development of device integration... Solar-blind deep-ultraviolet(DUV)photodetectors based on Ga2O3have attracted great attention due to their potential applications for many military and civil purposes.However,the development of device integration for optoelectronic system applications remains a huge challenge.Herein,we report a facile method for patterned-growth of high-qualityβ-Ga2O3thin films,which are assembled into a photodetectors array comprising 8×8 device units.A representative detector exhibits outstanding photoresponse performance,in terms of an ultra-low dark current of 0.62 pA,a large Ilight/Idark ratio exceeding 104,a high responsivity of 0.72 A W-1 and a decent specific detectivity of 4.18×1011Jones,upon 265 nm DUV illumination.What is more,the DUV/visible(250/400 nm)rejection ratio is as high as 103 with a sharp response cut-off wave length at 280 nm.Further optoelectronic analysis reveals that the photodetectors array has good uniformity and repeatability,endowing it the capability to serve as a reliable DUV light image sensor with a decent spatial resolution.These results suggest that the proposed technique offers an effective avenue for patterned growth ofβ-Ga2O3thin films for multifunctional DUV optoelectronic applications. 展开更多
关键词 Ultrawide-bandgap semiconductor Solar-blind Deep ultraviolet photodetection Patterned growth Image sensor
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Spatial patterns of urban land use growth in Beijing 认领 引用 被引量：18
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作者 LIU Shenghe, Sylvia Prielei, LI Xiubin(1. Inst. of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China 2. International Institute for Applied System Analysis, A-2361 Laxenburg, Austria) 《Journal of Geographical Sciences》 2002年第3期266-274,共9页
By using digitized land use maps of Beijing in 1982, 1992 and 1997 and employing GIS spatial analysis techniques, this paper conducts an empirical study on the spatial differentiation and spatial patterns of urban lan... By using digitized land use maps of Beijing in 1982, 1992 and 1997 and employing GIS spatial analysis techniques, this paper conducts an empirical study on the spatial differentiation and spatial patterns of urban land use growth in Beijing in the period of 1982–1997. It is observed that urban land use growth in Beijing went beyond the control of urban planning, in terms of the extraordinary high growth rate and undesired spatial pattern. The rate of urban expansion after 1982, which was predominated by growth of industrial land, was extraordinary high compared to its historical period. While its growth centers have been actively shifting toward the northern part, rather than toward the southern and eastern parts as designated by the latest General Plan (1991–2010) of Beijing, its spatial pattern of urban land use growth in general was in distinct concentric sprawl, which seriously violated the General Plan of Beijing. 展开更多
关键词 urban land use spatial differentiation growth pattern GIS Beijing
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Muscle Development Transition and Myogenic Regulatory Factors Expression Profiling During Rapid Growth in Silver Pomfret(Pampus argenteus) 认领 引用
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作者 LI Chang QIN Chunlai +7 位作者 CHEN Xinglong FU Yangfei HUANG Xiang LI Yuanbo XU Shangliang YAN Xiaojun HU Jiabao WANG Yajun 《Journal of Ocean University of China》 SCIE CAS CSCD 2025年第6期1775-1793,共19页
Myogenic regulatory factors(MRFs)serve as crucial transcription factors that regulate muscle development and differentiation.Although MRFs have been extensively studied across various species,their specific role in th... Myogenic regulatory factors(MRFs)serve as crucial transcription factors that regulate muscle development and differentiation.Although MRFs have been extensively studied across various species,their specific role in the muscle development of silver pomfret(Pampus argenteus)has not been fully understood.To elucidate the role of MRFs in the muscle development of silver pomfret,we characterized the muscle growth pattern during the rapid growth phase of this organism(60–120 days post-hatching,Dph).The analysis revealed a distinct transition in growth mechanisms:Hyperplasia dominated muscle development before 90 Dph,whereas hypertrophy became predominant thereafter.The period between 80–90 Dph was a critical transition stage in the muscle growth pattern.Subsequently,five MRF family members,namely,myogenic determination 1(MyoD1),MyoD2,myogenic factor 5(Myf5),Myf6,and myogenin(MyoG),were initially identified in silver pomfret.MRFs exhibited evolutionary conservation and were specifically expressed in the muscle of the silver pomfret.Differential expressions of MRFs were observed across various stages of rapid growth and among individuals with differing growth rates.Upon the addition of exogenous regulatory factors,insulin-like growth factor 1(IGF)-1 and transforming growth factor beta 1(TGF-β1)in vitro,MRFs exhibited the most significant upregulation in response to 100 ng/mL of IGF-1.Conversely,Myf5 demonstrated the most pronounced down-regulation at 100 ng/mL of TGF-β1.For the remaining genes,the most effective suppression was achieved with 1 ng/mL of TGF-β1.These findings indicate the crucial role played by MRFs in the regulation of muscle growth and development.This study not only provides new insights into the functional roles of MRFs in fish muscle development but also establishes a foundation for the optimization of silver pomfret aquaculture strategies through the modulation of these factors. 展开更多
关键词 myogenic regulatory factors muscle growth pattern evolutionary conservation hyperplasia hypertrophy
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