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First record of abnormal body coloration in a rockfish Sebastes koreanus(Scorpaenoidei:Sebastidae)from coastal water of China based on morphological characteristics and DNA barcoding

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Journal of Oceanology and Limnology 2024年第2期42卷 640-646页

作者： Ang LI Huan WANG Changting AN Shufang LIU Yellow Sea Fisheries Research Institute Chinese Academy of Fishery SciencesQingdao 266071China Laboratory for Marine Fisheries Science and Food Production Processes Laoshan LaboratoryQingdao 266071China

The first record of abnormal body coloration in Sebastes koreanus Kim and Lee,1994,from the Yellow Sea of China,was documented based on morphological characteristics and DNA *** two rockfish specimens were collected from the coastal waters of Qingdao,China,and the whole body and all fins of them were *** the two red-colored rockfish,there were tiny deep red spots on each fin,2 red radial stripes behind and below the eyes and 1 large deep red blotch on the opercula,while the similar stripe and spot patterns are also present in the *** specimens with normal body *** countable characteristics of the two specimens are in the range of the morphometry of *** further clarify the species identity and taxonomic status of the two specimens,DNA barcode analysis was carried *** genetic distance between the red-colored rockfish and *** was 0,and the minimum net genetic distances between the red-colored rockfish and other Sebastes species except for *** were 3.0%,which exceeds the threshold of species *** phylogenetic analysis showed that the DNA barcoding sequences of the two red-colored rockfish clustered with the *** *** above results of DNA barcode analysis also support that the two red-colored rockfish could be identified as the species of *** mechanism of color variation in *** is desirable for further research and the species could be an ideal model to study the color-driven speciation of the rockfishes.

关键词： abnormal body coloration Sebastes koreanus coastal water of China Yellow Sea morphological characteristics DNA barcoding

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morphological characteristics in the area off eastern Taiwan Island and their tectonic implications

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Acta Oceanologica Sinica 2004年第3期23卷 449-461页

作者： LIUBaohua ZHENGYanpeng WUJinlong HANGuozhong ZHANGDeyu FirstInstituteofOceanography StateOceanicAdministrationQingdao266061China KeyLaboratoryofMarineSedimentologyandEnvironmentalGeologyofStateOceanicAdministration Qingdao2660061China

On the basis of bathymetric data and other geological and geophysical data obtained during the first survey conducted by Chinese Mainland in the area off eastern Taiwan Island from May to June in 2000, the morphological features of the region, the tectonic control to the seafloor topography and their tectonic implication are studied and discussed. The results have revealed that both the slope zone of the Ryukyu arc and the Ryukyu Trench present a typical morphotectonic characteristics controlled by the trench-arc system in the West Pacific Ocean. At the slope of eastern Taiwan Island the isobathic lines parallel to the coastline and distribute densely in nearly N-S direction and the slope gradient of topography is large. Such a unique feature is attributed to the collision of the Luzon arc and Eurasia continent. In the Huatung Basin, turbidity fans and submarine canyons are well developed, the formations of which are mainly related to the steep topography of the slope of the Luzon arc and the abundant supply of sediments. These submarine canyons are controlled by basement highs and strike-slip faults. On eastern side and western side of the Gagua Ridge, both the water depth and morphological features are different, but the basement of Gagua Ridge belongs to the Huatung Basin. The eastern side of the Gagua Ridge (123°12′E) corresponds to the boundary of two plates with different ages. In the West Philippine Basin, linear ridges and troughs in a NW trending are identified, which are dissected by a NE trending transform fault. According to the seafloor topography features, the direction of the transform fault and the magnetic anomaly lineations, the seafloor of this region was formed during 60-45 Ma B. P. when the West Philippine Basin was spreading along NE-SW relative to the present orientation.

关键词： Taiwan Island morphological characteristics tectonic implications

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morphological characteristics of Precipitation Areas over the Tibetan Plateau Measured by TRMM PR

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Advances in Atmospheric Sciences 2021年第4期38卷 677-689页

作者： Yilun CHEN Aoqi ZHANG Yunfei FU Shumin CHEN Weibiao LI Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies School of Atmospheric SciencesSun Yat-sen UniversityZhuhai 519000China School of Earth and Space Sciences University of Science and Technology of ChinaHefei 230026China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519000China

The multidimensional morphological characteristics(including scale, horizontal shape and 3 D morphology) of precipitation areas over the Tibetan Plateau in summer were studied using 15 years(1998–2012) of observational data from the precipitation radar onboard the Tropical Rainfall Measuring Mission satellite. As the scale of the precipitation area increased from 20 to 150 km, the near-surface rain rate(RRav) of the precipitation area increased by up to 78%(from ~1.12 to ~2 mm h~(-1)). Linear precipitation areas had the lowest median RRav(~1 mm h~(-1) over the eastern Tibetan Plateau),whereas square-shaped precipitation areas had the highest median RRav(~1.58 mm h~(-1) over the eastern Tibetan Plateau).The 3D morphology was defined as the ratio of the average vertical scale to the average horizontal scale, where a large value corresponds to thin and tall, and a small value corresponds to plump and short. Thin-and-tall precipitation areas and plump-and-short precipitation areas had a greater median RRav, whereas the precipitation areas with a moderate 3D morphology had the lowest median RRav. The vertical structure of the precipitation-area reflectivity was sensitive to both size and 3D morphology, but was not sensitive to the horizontal shape. The relationship between RRav and the morphological characteristics was most significant over the southern slopes of the Tanggula Mountains and the Tibetan Plateau east of 100°E. The morphological characteristics of precipitation areas are therefore closely related to the intensity of precipitation and could potentially be used to forecast precipitation and verify numerical models.

关键词： precipitation areas morphological characteristics Tibetan Plateau TRMM PR

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morphological characteristics and atomic evolution behavior of nanojoints in Ag nanowire interconnect network

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International Journal of Extreme Manufacturing 2023年第2期5卷 254-264页

作者： Jianlei Cui Xiaoying Ren Xuesong Mei Zhengjie Fan Chenchen Huang Zhijun Wang Xiaofei Sun Wenjun Wang State Key Laboratory for Manufacturing Systems Engineering Xi’an Jiaotong UniversityXi’an 710049People’s Republic of China State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi’an 710072People’s Republic of China

Ag nanowires(AgNWs)have shown great application value in the field of flexible electronics due to their excellent optical and electrical properties,and the quality of its joints of AgNWs in the thin film network directly plays a key role in its *** order to further improve the joint quality of AgNWs under thermal excitation,the thermal welding process and atomic evolution behavior of AgNWs were investigated through a combination of in situ experimental and molecular dynamics *** influence of processing time,temperature,and stress distribution due to spatial arrangement on nanojoints was systematically *** is more,the failure mechanisms and their atomic interface behavior of the nanojoints were also investigated.

关键词： Ag nanowires nanocontacts morphological characteristics atomic configuration MD simulation

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Numerical study on morphological characteristics of rotational natural supercavitation by rotational supercavitating evaporator with optimized blade shape

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Journal of Hydrodynamics 2020年第3期32卷 468-485页

作者： Zhi-ying Zheng Qian Li Lu Wang Li-ming Yao Wei-hua Cai Hui Li Feng-chen Li School of Energy Science and Engineering Harbin Institute of TechnologyHarbin 150001China School of Civil Engineering Harbin Institute of TechnologyHarbin 150090China Department of Nuclear Engineering Kyoto UniversityKyotoJapan College of Aerospace and Civil Engineering Harbin Engineering UniversityHarbin 150001China Institute of Advanced Technology Heilongjiang Academy of SciencesHarbin 150020China Sino-French Institute of Nuclear Engineering and Technology Sun Yat-Sen UniversityZhuhai 519082China

In view of the supercavitation effect, a novel device named the rotational supercavitating evaporator (RSCE) has been designed for the desalination. In order to improve the blade shape of the rotational cavitator in the RSCE for the performance optimization, the blade shapes of different sizes are designed by utilizing the improved calculation method for the blade shape and the validated empirical formulae based on previous two-dimensional numerical simulations, from which the optimized blade shape with the wedge angle of 45° and the design speed of 5 000 r/min is selected. The estimation method for the desalination performance parameters is developed to validate the feasibility of the utilization of the results obtained by the two-dimensional numerical simulations in the design of the three-dimensional blade shape. Three-dimensional numerical simulations are then conducted for the supercavitating flows around the rotational cavitator with the optimized blade shape at different rotational speeds to obtain the morphological characteristics of the rotational natural supercavitation. The results show that the profile of the supercavity tail is concaved toward the inside of the supercavity due to the re-entrant jet. The empirical formulae for estimating the supercavity size with consideration of the rotation are obtained by fitting the data, with the exponents different from those obtained by the previous two-dimensional numerical simulations. The influences of the rotation on the morphological characteristics are analyzed from the perspectives of the tip and hub vortices and the interaction between the supercavity tail and the blade. Further numerical simulation of the supercavitating flow around the rotational cavitator made up by the blades with exit edge of uniform thickness illustrate that the morphological characteristics are also affected by the blade shape.

关键词： Rotational natural supercavitation morphological characteristics blade shape computational fluid dynamics(CFD)numerical simulation rotational supercavitating evaporator

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Analysis of morphological characteristics of gravels based on digital image processing technology and self-organizing map

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Journal of Arid Land 2023年第3期15卷 310-326页

作者： XU Tao YU Huan QIU Xia KONG Bo XIANG Qing XU Xiaoyu FU Hao College of Earth Science Chengdu University of TechnologyChengdu 610059China Beijing SuperMap Software Co. Ltd.Beijing 100015China Sichuan Real Estate Registration Center Chengdu 610014China Chengdu Institute of Mountain Land and Disasters Chinese Academy of SciencesChengdu 610041China School of Earth Systems and Sustainability Southern Illinois University CarbondaleCarbondaleIL 62901United States of America Environmental Resources and Policy Southern Illinois University CarbondaleCarbondaleIL 62901United States of America Sichuan Institute of Land and Space Ecological Restoration and Geohazard Prevention Chengdu 610081China

A comprehensive understanding of spatial distribution and clustering patterns of gravels is of great significance for ecological restoration and ***,traditional methods for studying gravels are low-efficiency and have many *** study researched the spatial distribution and cluster characteristics of gravels based on digital image processing technology combined with a self-organizing map(SOM)and multivariate statistical methods in the grassland of northern Tibetan ***,the correlation of morphological parameters of gravels between different cluster groups and the environmental factors affecting gravel distribution were *** results showed that the morphological characteristics of gravels in northern region(cluster C)and southern region(cluster B)of the Tibetan Plateau were similar,with a low gravel coverage,small gravel diameter,and elongated *** regions were mainly distributed in high mountainous areas with large topographic *** central region(cluster A)has high coverage of gravels with a larger diameter,mainly distributed in high-altitude plains with smaller *** component analysis(PCA)results showed that the gravel distribution of cluster A may be mainly affected by vegetation,while those in clusters B and C could be mainly affected by topography,climate,and *** study confirmed that the combination of digital image processing technology and SOM could effectively analyzed the spatial distribution characteristics of gravels,providing a new mode for gravel research.

关键词： self-organizing map digital image processing morphological characteristics multivariate statistical method environmental monitoring

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morphological characteristics of the Long-legged Chafer Hoplia spectabilis Medvedev(Coleoptera: Scarabaeoidea) at Various Developmental Stages

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Plant Diseases and Pests 2015年第3期6卷 25-29页

作者： Guo Jianpu Nong Xiangqun Wang Feng Seed Station of Haixi Mongolian-Tibetan Autonomous Prefecture State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural Sciences Forest Pest Control and Quarantine Station of Tianjun County

The long-legged chafer Hoplia spectabilis Medvedev was described in 1952. Its occurrence was rarely reported and the document about its morphological details was not found. However, the chafer did frequently break out at Buha River valley in Tianjun county, Qinghai province, China since 2005. In this paper, we present a comprehensive description and illustrations of morphological characteristics of H. spectabilis from local collection, including developmental stages of adult, egg, larva and pupa. Among them, characteristics of the larva and pupa, the male genitalia as well as the difference between male and female are described for the first time. The morphological data will be quite useful for identification and characterization of the chafer, a poorly known species. It will also be an important basis for the chafer control when it breaks out.

关键词： Hoplia spectabilis Medvedev morphological characteristics Adult Egg Larva Pupa

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morphological characteristics and Nutrient Content of Fine Roots of 2-Year-Old and 3-Year-Old Eucalyptus grandis Plantation

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Agricultural Biotechnology 2012年第6期1卷 9-14页

作者： Xiaoyu DUAN Xianwei LI Liuling ZHOU Weishuang WANG Hui CHEN College of Forestry Sichuan Agricultural University (Ya'an Campus) College of Landscape Architecture Sichuan Agricultural University (Chengdu Campus)

[ Objective] This study aimed to explore the morphological characteristics and nutrient content of f＇me roots of 2-year-old and 3-year-old Euca/yptus grand/s plantation and investigate the correlation. [ Method] Fine roots of 2-year-old and 3-year-old Eucalyptus grandis plantation were collected as experimental materials, to determine the root diameter （D）, root length （L）, specific root length （SRL） and contents of major nutrient elements N, P, K, Ca, Mg and C of fine roots （level 1 -5）, study the morphological characteristics and major nutrient element content and investigate the correlation. [ Result] The results showed that morphological differences of fine roots （ level 1 - 5 ） of Eucalyptus grandis plantation were great with the increase of root order, to be specific, D and L increased and SRL decreased with the increasing root order; SRL, L and D of 3-year-old Eucalyptus grauclis plantation were greater than those of 2-year-old Euca/yptus grand/s plantation. Contents of N, Ca, Mg and C of fine roots of 2-year-old and 3-year-old Eucalyptus grandis plantation showed consistent orders with the increase of root order： N and Mg contents were reduced, while Ca and C contents were enhanced; P and K contents varied with different forest ages; both 2-year-old and 3-year- old Eucalyptus grandis showed an order of C 〉 K 〉 Ca （Mg）〉 N. Major nutrient element content and morphological characteristics of Eucalyptus grand/s fine roots （level 1 -5 ） were extremely significantly correlated （P 〈0.01 ）, SRL, L and D could be adopted as reference indices to evaluate nutrient status of Eucalyptus grand/s. Required nutrients and fine root morphology of Eucalyptus grandis plantation changed with the increase of forest age, and the nutrient cycling and energy flow patterns also changed; major nutrient dements in fine roots of 2-year-old and 3-year-old Eucalyptus grandis plantation transferred in a different order from the growth order, therefore N fertilizer could be applied to impr

关键词： Eucalyptus grandis Fine root Root order Nutrient elements morphological characteristics

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morphological characteristics of Drug-loaded Nanoparticles based on Microscope Images Analysis System

Morphological Characteristics of Drug-loaded Nanoparticles b...

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2012 National Conference on Information Technology and Computer Science

作者： Bohua Feng,College of Medical Information Engineering Guangdong Pharmaceutical University Guangzhou,China Siyuan Mo College of Medical Information Engineering Guangdong Pharmaceutical University Guangzhou,China Liufen Peng College of Medical Information Engineering Guangdong Pharmaceutical University Guangzhou,China Huoyan Xu College of Medical Information Engineering Guangdong Pharmaceutical University Guangzhou,China

Microscope images analysis of drug carriers was a widely used method for those *** manual measuring and analysis of microscope images were subject to errors,and bad stability of *** microscope images analysis method was combined with computer image processing technique in this research.A new nanoparticle Rot/CMC-g-RA was prepared with chitosan derivate drug carrier CMC-g-RA and botanical drug rotenone （Rot）,and a processing and measuring system for microscope images of those drug-loaded nanoparticles was prepared by Visual C++ *** result showed characteristics measured by the system such as nanoparticles,particle size,area and roundness of Rot/CMC-gRA were close to that measured by dynamic light scattering （DLS） *** a fast,precise and automatic method for measuring and statistic nanoparticles morphometric parameters was developed.

关键词： component Nanoparticle Microscope Image Analysis morphological characteristics

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Three-dimensional morphological characteristics measurement of ankle joint based on computed tomography image post-processing

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Chinese Medical Journal 2011年第23期124卷 3912-3918页

作者： CHEN Yan-xi LU Xiao-ling BI Gang YU Xiao HAO Yi-li ZHANG Kun ZOU Li-ling MEI Jiong YU Guang-rong Department of Orthopaedics Tongji Hospital of Tongji University Shanghai 200065 China

As precise positioning of ankle radiography is not possible, quantitative measurement of all syndesmotic parameters on repeated ankle X-ray films may be of little value. The purpose of this study was to provide a set of scientific and objective evaluation criteria for assessing the quality of ankle fracture reduction accurately and reliably by an intelligent combining three-dimensional （3-D） computed tomography （CT） measurement model. Methods From June 2008 to March 2011, all the thin-slice CT images of 100 cases （50 males and 50 females） with normal ankle joint scanned by 16-slice spiral CT were collected. Two-dimensional （2-D） and 3-D images of ankle joints were generated by using multiple planar reconstruction （MPR） and surface shaded display （SSD） respectively. The relevant parameters about bone structures and their relationship were measured and analyzed based on 3-D topological narrow division technique and 3-D measurement techniques combining essential elements of point, line and surface. Results In this study, the mean distance from lateral malleolus tip to talocrural articular surface, the tip of medial malleolus anterior colliculus to talocrural articular surface and lateral malleolus tip to the tip of medial malleolus anterior colliculus were （22.83±1.12） mm, （12.84±1.09） mm, and （61.18±2.03） mm respectively in male group, and （20.16±1.00） mm, （10.30±1.05） mm and （53.00±1.40） mm respectively in female group. The above three parameters were correlated with gender, height and weight （P 〈0.05）. However, the mean perpendicular distance from lateral malleolus tip to the plane through the tip of medial malleolus anterior colliculus, the talocrural angle, later clear space, medial clear space, and the superior clear space were （9.93±0.29） mm, （10.01±0.38）°, （1.94±0.16） mm, （2.78±0.19） mm, and （3.14±0.15） mm respectively in 100 cases, were not significance correlated with gender, height and weight （P 〉0.05）. Conclusions This study could provide a certain amount o

关键词： ankle, computed tomography three-dimensional reconstruction morphological characteristics

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