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29篇 您的检索式:作者名="Junhui Lin"
    题名 作者 年代 出处 被引量
1In vivo superresolution photoacoustic computed tomography by localization of single dyed droplets显示文摘Photoacoustic(PA)computed tomography(PACT)is a noninvasive hybrid imaging technique that combines optical excitation and acoustic detection to realize high contrast,high resolution,and deep penetration in biological tissues.However,the spatial resolution of PACT is limited by acoustic diffraction.Here,we report in vivo superresolution PACT,which breaks the acoustic diffraction limit by localizing the centers of single dyed droplets that are flowing in blood vessels.The droplets were prepared by dissolving hydrophobic absorbing dye in oil,followed by mixing with water.The dyed droplets generate much higher-amplitude PA signals than blood and can flow smoothly in vessels;thus,they are excellent tracers for localization-based superresolution imaging.The in vivo resolution enhancement was demonstrated by continuously imaging the cortical layer of a mouse brain during droplet injection.The droplets that were flowing in the vessels were localized,and their center positions were used to construct a superresolution image that exhibits sharper features and more finely resolved vascular details.An improvement in spatial resolution by a factor of 6 has been realized in vivo by the droplet localization technique.Pengfei Zhang Lei Li Li Lin Junhui Shi Lihong V.Wang 2019Light(Science & Applications)2019,8,1:6
2Fouling community characteristics in subtropical coastal waters of the southwestern East China Sea显示文摘A fouling study was conducted in coastal waters southwest of the East China Sea between December 2013 and November 2014. A total of 84 species of fouling organisms belonging to 69 genera, 49 families, and 10 phyla were recorded over the entire year. The community composition was dominated by coastal warm-water species belonging to typical subtropical inner bay communities. The prosperous stage of settlement lasted from April to September, and the adhesion strength of the fouling organisms was the highest in summer. Sessile suspension feeders constituted the main core of settlement for the fouling community. Amphibalanus reticulatus was the most dominant and representative species of fouling organism, and other dominant species included Caprella equilibra, Ectopleura crocea, Anthopleura nigrescens, Stylochus ijimai, Spirobranchus kraussii, Crassostrea angulata, Perna viridis, Jassa falcata, Stenothoe valida, Sphaerozius nitidus, and Biflustra grandicella. The individuals in the fouling community showed a mutual dependence or constraint relationship due to competition for settlement space and food, and they exhibited a particular spatiotemporal distribution in accordance with adaptation to environmental factors. Temperature was the most important environmental factor determining the geographic distribution of fouling organisms. The temperature characteristics of species essentially reflect the differences in the fouling community composition in various climate zones. The species number, settlement stage, and settlement rate of fouling organisms are closely related to water temperature. Local natural environmental conditions(salinity, water currents, light, etc.) as well as human activity(such as aquaculture production) are all important factors affecting the settlement of fouling organisms.LIN Heshan WANG Jianjun LIU Wei LIU Kun ZHANG Shuyi HE Xuebao HUANG Yaqin LIN Junhui MOU Jianfeng ZHENG Chengxing YAN Tao 2017Acta Oceanologica Sinica2017,36,10:6
3Principle and Experimental Verification of Novel Dual Driving Face Rotary Ultrasonic Motor显示文摘Existing rotary ultrasonic motors operating in extreme environments cannot meet the requirements of good environmental adaptability and compact structure at same time,and existing ultrasonic motors with Langevin transducers show better environmental adaptability,but size of these motors are usually big due to the radial arrangement of the Langevin transducers.A novel dual driving face rotary ultrasonic motor is proposed,and its working principle is experimentally verified.The working principle of the novel ultrasonic motor is firstly proposed.The 5th in-plane flexural vibration travelling wave,excited by the Langevin transducers around the stator ring,is used to drive the rotors.Then the finite element method is used in the determination of dimensions of the prototype motor,and the confirmation of its working principle.After that,a laser Doppler vibrometer system is used for measuring the resonance frequency and vibration amplitude of the stator.At last,output characteristics of the prototype motor are measured,environmental adaptability is tested and performance for driving a metal ball is also investigated.At room temperature and 200 V(zero to peak) driving voltage,the motor's no-load speed is 80 r/min,the stalling torque is 0.35 N·m and the maximum output power is 0.85 W.The response time of this motor is 0.96 ms at the room temperature,and it decreases or increases little in cold environment.A metal ball driven by the motor can rotate at 210 r/min with the driving voltage 300 V(zero to peak).Results indicate that the prototype motor has a large output torque and good environmental adaptability.A rotary ultrasonic motor owning compact structure and good environmental adaptability is proposed,and lays the foundations of ultrasonic motors' applications in extreme environments.LU Xiaolong HU Junhui YANG Lin ZHAO Chunsheng 2013Chinese Journal of Mechanical Engineering2013,26,5:4
4Community structure and spatial distribution of macrobenthos in the shelf area of the Bering Sea显示文摘Field investigations of marine macrobenthos were conducted at ten sites in the Bering Sea in July 2010. Altogether 90 species of macrobenthos belonging to 59 families and 78 genera were identified. Among them, 41 polychaetes, 16 mollusks, 23 crustaceans, three echinoderms, two cnidarians, one nemertean, one priapulid, two sipunculids, and one echiuran were identified. The average density and biomass of total macrobenthos were 984 ind./m2 and 1 207.1 g/m2 of wet weight, respectively. The predominant species in the study area were Scoloplos armiger, Eudorella pacifica, Ophiura sarsii, Heteromastus filiformis, Ennucula tenuis, and Harpiniopsis vadiculus by abundance, while the predominant species in this area was Echinarachnius parma by biomass. Hierarchical cluster analysis(Bray–Curtis similarity measure) revealed that two important benthic assemblages in the study area were Community A and Community B. Community A was stable and Community B was unstable, as shown by the Abundance/Biomass Comparisons(ABC) approach. The macrobenthic community structure in the shelf of the Bering Sea was characterized by its high abundance and biomass, high productivity but great heterogeneity.WANG Jianjun HE Xuebao LIN Heshan LIN Junhui HUANG Yaqin ZHENG Chengxing ZHENG Fengwu LI Rongguan JIANG Jinxiang 2014Acta Oceanologica Sinica2014,33,6:4
5An ecological survey of the abundance and diversity of benthic macrofauna in Indonesian multispecific seagrass beds显示文摘Seagrasses are one of the most productive ecosystems in coastal areas and support a wide variety of associated fauna. The tropical Indo-Pacific region is considered to have the highest diversity of seagrass plant species and the largest distribution areas of seagrass, yet the seagrass macrofauna in this region are poorly understood. To help fill this gap in our knowledge, an ecological survey was conducted to describe the abundance and diversity of benthic macrofauna from tropical seagrass beds and to determine between-station variations within a transect and between-site variations in macrofaunal abundance, taxa richness and community structure. Benthic macrofaunal samples associated with seagrass beds were collected with a core sampler on the east coast of North Sulawesi in May 2014 and on the west coast in October 2015. A total of 149 species from 14 higher taxa was collected. The most species-rich groups were polychaetes(56 species, 26% of total individual numbers), decapods(20 species, 9% of total numbers) and amphipods(18 species, 35% of total numbers). Between-station variations within a transect displayed different patterns between the east coast and the west coast. On the east coast, there were marked variations in abundance between stations within a transect for the macrofauna and amphipod assemblages. Both taxa richness and abundance varied with station for the macrofauna and polychaete assemblages on the west coast, resulting from the heterogeneity of the substrate along a transect. One-way ANOSIM together with MDS ordination indicated that macrofaunal community structure in seagrasses differed significantly between the east coast and the west coast, corresponding with the division of seagrasses into two broad categories of habitats, i.e.,mangrove-seagrass-reef continuum and seagrass-reef continuum. Compared with other studies in tropical areas,the abundance and diversity of benthic macrofauna in the present study were moderate. The reason for the two markedly distinct macrofaunal communities might be attributed to multiple factors, including sediment pattern,seagrass structure and temporal changes.LIN Junhui HUANG Yaqin ARBI Ucu Yanu LIN Heshan AZKAB Muhammad Husni WANG Jianjun HE Xuebao MOU Jianfeng LIU Kun ZHANG Shuyi 2018Acta Oceanologica Sinica2018,37,6:3
6A novel in-plane mode rotary ultrasonic motor显示文摘Ultrasonic motors have the merits of high ratio of torque to volume, high positioning precision, intrinsic holding torque, etc., compared to the conventional electromagnetic motors. There have been several potential applications for this type of motor in aerospace exploration, but bearings and bonding mechanism of the piezoelectric ring in the motors limit the performance of them in the space operation conditions. It is known that the Langevin type transducer has excellent energy efficiency and reliability. Hence using the Langevin type transducer in ultrasonic motors may improve the reliability of piezoelectric motors for space applications. In this study, a novel in-plane mode rotary ultrasonic motor is designed, fabricated, and characterized. The proposed motor operates in in-plane vibration mode which is excited by four Langevin-type bending vibrators separately placed around a ring-shaped stator. Two tapered rotors are assembled to the inner ring of the stator and clamped together by a screw nut. In order to make the motor more stable and convenient to fix, a thin cylindrical support is placed under the stator ring. Due to its no-bearing structure and Langevin transducer excitation, the prototype ultrasonic motor may operate well in aeronautic and astronautic environments.Lu Xiaolong Hu Junhui Yang Lin Zhao Chunsheng 2014Chinese Journal of Aeronautics2014,27,2:3
7Biodiversity and community structural characteristics of macrobenthos in the Chukchi Sea显示文摘Field sampling of the macrobenthos from 23 stations in the Chukchi Sea was conducted during the 4th CHINARE(Chinese National Arctic Research Expeditions, July–August, 2010). We identified a total of 140 species of macrozoobenthos belonging to nine phyla, which were dominated by polychaetes(66), crustaceans(30), and mollusks(25), followed by echinoderms(9) and others(ten others, including four cnidarians, one oligochaete, one sipuncula, one priapulida, two bryozoans, and one urochordata). The dominant species were Aphelochaeta pacifica, Heteromastus filiformis, Nephtys ciliata, Nephtys caeca, Scoletoma fragilis, Golfingia margaritacea, Nuculana pernula, Macoma calcarea, Ennucula tenuis, Macoma inquinata, Musculus discors, Echinarachnius parma, and Ophiura sarsii, so there were more cold-eurythermal boreal immigrants than truly Arctic species(endemics). The average density and biomass(mean ± SD across all stations) of the total macrozoobenthos were(916 ± 907) ind/m2 and(902.9 ± 1 227.7) g/m2(wet weight), respectively. Relatively high density and biomass were observed in the samples from the northeastern and southern Chukchi Sea. The spatial variation of benthic communities in the study sea area was relatively large; this spatial heterogeneity has led to high diversity and a patchy distribution pattern in the community structure. Compared to the 1st CHINARE( July–August, 1999), this investigation revealed different degrees of decreases in the average taxa numbers and the average density, abundance, and biodiversity in the area over the recent decade, which might be associated with global warming, human activities, and sea ice variations.WANG Jianjun LIN Heshan HE Xuebao LIN Junhui HUANG Yaqin LI Rongguan ZHENG Chengxing ZHENG Fengwu JIANG Jinxiang 2014Acta Oceanologica Sinica2014,33,6:3
8Development of retinol-binding protein 4 immunocolloidal gold fast test strip using high-sensitivity monoclonal antibodies generated by DNA immunization显示文摘DNA 免疫是为高亲密关系的 monoclonal 抗体产生的一个有效方法。这里,我们对松香油绑定蛋白质 4 描述几高质量的 monoclonal 抗体(mAbs ) 的产生(RBP4 ) ,为肾反常和机能障碍的一个重要标记,与 DNA 的一个联合方法, priming 和蛋白质增加。产生的 mAbs 能与高敏感并且用这些 mAbs 绑在 RBP4,一块 immunocolloidal 金牌快测试长带被构造。长带能交上结果 < 5 min 并且与大约 1 ng/ml 的察觉限制是很敏感的。小规模的临床的测试表明这脱衣的结果根据在市场上当前可得到的一个标记酶的 immunosorbent 试金工具包的好。因而,它能为在诊所的更方便、更快的 RBP4 决心是有用的。Chao Bian Fang Zhang Feng Wang Zhiyang Ling Min Luo Hongqiang Wu Yizhuo Sun Junhui Li B ingnan Li Jingyan Zhu Linna Tang Yanyan Zhou Qunfang Shi Yongyong Ji Lin Tian Guomei Lin Yu Fan Niansong Wang Bing Sun 2010Acta Biochimica et Biophysica Sinica2010,42,12:2
9MoS2/MnO2 heterostructured nanodevices for electro- chemical energy storage显示文摘Xiaobin Liao Yunlong Zhao Junhui Wang Wei Yang Lin Xu Xiaocong Tian Yi Shuang Kwadwo Asare Owusu Mengyu Yan Liqiang Mai 2018Nano Research2018,11,4:2
10A Novel Negative Regulator of Adipogenesis: MicroRNA‐363显示文摘Lin Chen Junhui Cui Jia Hou Jie Long Cai Li Lei Liu 2014Stem Cells2014,,2:2
11Study on Plasticity Modification for Measuring High Residual Stress by Hole-Drilling Method显示文摘Hole-drilling method is a commonly used method for measuring residual stress. The calibration coefficients in ASTM E837-13 a would cause large errors due to the plasticity deformation of materials. In the study, calibration coefficients were modified in the plasticity deformation stage based on the distortion energy theory. The calibration experiment of calibration coefficients was simulated by the finite element model, and the plasticity modification formulas of 7075 aluminum alloy were obtained. From the results of uniaxial tensile loading test, the measuring errors of high residual stress are significantly reduced from-4.071%~53.440% to-5.140% ~ 0.609% after the plasticity modification. This work provides an effective way to expand the application of hole-drilling method.ZHENG Jianyi ZHOU Chuanyan ZHENG Gaofeng LIN Junhui 2018Instrumentation2018,5,4:1
12Recent progress in antireflection and self-cleaning technology – From surface engineering to functional surfaces显示文摘Lin Yao Junhui He 2014Progress in Materials Science2014,,:1
13Ferroelastic domain identification and toughening mechanism for yttrium tantalate–zirconium oxide显示文摘Yttrium tantalate(YTaO_(4))is the next generation of higher service temperature thermal barrier coatings(TBCs)materials due to its smaller volume effect in phase change,lower thermal conductivity and unique ferroelastic domain structure.However,the low fracture toughness limits its application.We first characterized the diffraction patterns of variants,and two variants(M_(1)and M_(2))observed in transmission electron microscopy(TEM)results were determined from four possible variants by mechanical derivation.The role of Zr^(4+)doping in ferroelastic toughening was explained in detail.With the increase of Zr^(4+)doping concentration,the monoclinic angle β and the domain rotation angleαdecrease,respectively.The spontaneous strain component and the principal strain in the main space also have a similar decreasing trend.The decrease of the ferroelastic domain inversion energy barrier is beneficial to the improvement of fracture toughness.Combining the results of Vickers indentation,we found that Zr^(4+)could be enriched at the domain boundary to inhibit the generation of cracks.An appropriate amount of Zr^(4+)is conducive to the improvement of fracture toughness,and the excessive Zr^(4+)will reduce the fracture toughness due to the generation of by-product t-ZrO_(2).So,the optimal composition is Y_(0.44)Ta_(0.44)Zr_(0.12)O_(2) and the best fracture toughness(2.9–3.8MPa m^(1/2))is equivalent to the commercial 8YSZ.This result will promote the application of a new generation of TBCs.Cheng Luo Cong Li Ke Cao Junbao Li Junhui Luo Qinghua Zhang QianQian Zhou Fan Zhang Lin Gu Li Yang Yichun Zhou 2022Journal of Materials Science & Technology2022,,32:1
14Mediomastus chinensis sp. nov., a new species of Capitellidae (Annelida: Polychaeta) from the southeast coast of China显示文摘Mediomastus is a common genus around the world,and Chinese specimens used to be identified as M.californiensis Hartman.In this study,118 Mediomastus specimens collected from four localities along the southeast coast of China were examined.They belonged to an unknown species.We treat them as a new species,described herein.The new species is characterized as follows:(1)chaetigers 1–9 biannulate with chaetal fascicles at midsegment,thereafter multiannulate with chaetal fascicles posterior to midsegment;(2)parapodial ridges on posterior abdomen;(3)possession of bilimbate capillary chaetae on chaetigers 1–4;(4)thoracic hooks with long,straight shaft,hood length about 3–5 times width;(5)abdominal hooks shorter,with developed shoulder and distinct constriction,markedly different from those in thorax;(6)unique staining pattern with methyl green.The present study indicated that Mediomastus species inhabiting Chinese waters might be misidentified as M.californiensis,and that Mediomastus chinensis sp.nov.is widely distributed along the southeast coast of China.LIN Junhui WANG Jianjun ZHENG Fengwu 2018Acta Oceanologica Sinica2018,37,10:1
15Spatial pattern of macrobenthic communities along a shelf-slope-basin transect across the Bering Sea显示文摘Due to its unique geological location, the Bering Sea is an ideal place to investigate the water exchange and ecosystem connectivity of the Pacific Ocean–Arctic Ocean and subarctic–Arctic region. Based on a number of summer surveys(July to September, 2010, 2012 and 2014), macrobenthic communities and their spatial-temporal patterns are exhibited for the majority of the Bering Sea(53°59′–64°36′N). The results show that the macrobenthic communities were dominated by northern cold-water species and immigrant eurythermic species, and the communities assumed a dispersed and patchy distribution pattern. Polychaetes(Scoloplos armiger), crustaceans(Ceradocus capensis) and sea urchins(Echinarachnius parma) were the main dominant groups in the shallow shelves; the sea star(Ctenodiscus crispatus) and the brittle star(Ophiura sarsii) were the main dominant groups in the continental slope; whereas small polychaetes(Prionospio malmgreni) dominated the basin area. Sediment type, water depth, and currents were the major factors affecting the structure and spatial distribution of the macrobenthic communities. Compared with other seas, the shallow areas of the Bering Sea showed an extremely high-standing biomass. In particular, the northern shelf area(north of St. Lawrence Islands and west of 170°W),which is primarily controlled by Anadyr Water, is an undersea oasis. In contrast, a deficiency in the downward transport of particulate organic carbon has resulted in a desert-like seabed in the basin area. By comparing our results to previous studies, we found that macrobenthic communities of the Bering Sea have undergone significant structural changes in recent decades, resulting in a decrease in abundance and an increase in biomass.In addition, populations of amphipods and bivalves in the northern shelves have decreased significantly and have been gradually replaced by other species. These changes might be associated with advanced seasonal ice melting,changes in organic carbon input, and global warming, indicating that large-scale ecosystem changes have been occurring in the Bering Sea.LIN Heshan LIU Kun WANG Jianjun HUANG Yaqin LI Zhong LIN Junhui HE Xuebao ZHANG Shuyi MOU Jianfeng WANG Yu XING Bingpeng 2018Acta Oceanologica Sinica2018,37,6:1
16Distribution, degradation and dynamics of dissolved organic carbon and its major compound classes in the Pearl River estuary, China显示文摘Biyan He Minhan Dai Weidong Zhai Lifang Wang Kejian Wang Junhui Chen Jianrong Lin Aiqin Han Yanping Xu 2009Marine Chemistry2009,,1:1
17A Survey on Color Image Segmentation Techniques显示文摘Lin Kaiyan Wu Junhui Xu Lihong 2005Journal of Image and Graphics2005,10,1:1
18Probing the Binding of the Flavonoid Diosmetin to Human Serum Albumin by Multispectroscopic Techniques显示文摘ZHANG Guowen WANG Lin PAN Junhui 2012Journal of Agricultural and Food Chemistry2012,60,10:1
19Distribution, degradation and dynamics of dissolved organic carbon and its major compound classes in the Pearl River estuary, China 显示文摘He Biyan Dai Minhan Zhai Weidong Wang Lifang Wang Kejian Chen Junhui Lin Jianrong Han Aiqin Xu Yanping 2010Mar Chem2010,119,14:1
20MtRGF3 peptide activates defense responses and represses the expressions of nodulation signaling genes in Medicago truncatula显示文摘Root meristem growth factors(RGFs)were first discovered in Arabidopsis thaliana and regulate root development,including primary root growth,lateral root formation and root gravitropism,etc.[1‒3].RGF belongs to a 13-amino-acid peptide family,which usually contains conserved aspartate(D1),tyrosine(Y2),proline(P9 and P10),histidine(H12)and asparagine(N13)residues.Among these residues,the second tyrosine residue(Y2)is modified by a sulfate group,and the tenth proline residue(P10)is hydroxylated[1‒3].The active peptide is processed from a precursor that consists of a signal peptide,a variant region and a conserved C-terminal domain.The peptide is recognized by the leucine rich repeat(LRR)receptor kinases(RGFR)and then regulates the activities of the AP transcription factors TLPs in A.[4‒6].Nine genes of AtRGF or AtGLV were identified in A.thaliana,and 15 corresponding genes were reported in the model legume Medicago truncatula[7].Qiong Li Dandan Shan Wenjia Zheng Yawen Wang Zhiyin Lin Huibo Jin Anqi Ding Junhui Yan Liangliang Yu Li Luo 2023Acta Biochimica et Biophysica Sinica2023,55,8:0
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