|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | PI3K/Akt signaling transduction pathway is involved in rat vascular smooth muscle cell proliferation induced by apelin-13显示文摘脉管的光滑的肌肉房间(VSMC ) 被将生物的活组织移植于培养基中培养方法从男 SpragueDawley 老鼠的胸的主动脉准备经由 3 kinase (PI3K )/Akt 发信号 transduction 小径由 apelin-13 导致了的 phosphoinositide 观察 VSMC 增长。PI3K, phospho-PI3K, phospho-Akt, ERK1/2, phospho-ERK1/2 和 cyclin D1 的表示被西方的污点分析检测。结果证明 apelin-13 在剂量依赖者和时间依赖者举止支持了 phospho-PI3K 和 phospho-Akt 的表示。PI3K 禁止者 LY294002 显著地减少了 phospho-PI3K, phospho-Akt, phospho-ERK1/2,和 cyclin D1 的表示由 apelin-13 导致了。Akt 禁止者 1701-1 显著地减少了 phospho-Akt, phospho-ERK1/2,和 cyclin D1 的表示由 apelin-13 刺激了。MTT 试金结果证明 PI3K 禁止者 LY294002 和 Akt 禁止者 1701-1 显著地禁止了 apelin-13 导致的 VSMC 增长。Apelin-13 通过表明 transduction 小径的 PI3K/Akt 支持了 VSMC 增长。 | Changhui Liu Tao Su Fang Li Lanfang Li Xuping Qin Weinan Pan Fen Feng Feng Chen Duanfang Liao Linxi Chen | 2010 | Acta Biochimica et Biophysica Sinica2010，42，6： | 41 |
| 2 | Regeneration and identification of interspecific asymmetric somatic hybrids obtained by donor-recipient fusion in cotton显示文摘Asymmetric hybrids between Gossypium hirsutum (YZ-1) and G. davidsonii were obtained by donor-recipient fusion. YZ-1 was considered the recipient and was pretreated with iodoacetamide (IOA), while G. davidsonii was considered the donor and was irradiated with ultraviolet (UV) before fusion. YZ-1 protoplasts stopped growth when treated with 0.5 mmol/L IOA for 20 min, and G. davidsonii protoplasts stopped growth when irradiated with 38.7 J/cm2 UV for 30 s. Asymmetric somatic hybrids were obtained by electrofusion between the separately treated protoplasts of the 2 species. The regenerated plants were identified by morphological, cytological, and molecular analysis. Most regenerated plants derived from fused protoplasts displayed new morphology; some were intermediate between the two parents and a few displayed recipient-like morphology. Chromosome numbers in these somatic hybrids mostly ranged from 40 to 73. The hybridity was confirmed by random amplified polymorphic DNA and simple sequence repeat analysis. Organelle DNA inheritance of the YZ-1 and G. davidsonii somatic hybrid was investigated by cleaved amplified polymorphism sequence and chloroplast simple sequence repeat analysis, which indicated that recombination and rearrangements might have occurred in some regions of mitochondrial and chloroplastic DNA. This is the first report of completely asymmetric hybrid production via donor–recipient fusion between G. hirsutum and G. davidsonii, which is a novel case in hybrid production following the symmetric fusion and asymmetric fusion based on UV irradiation in cotton. | FU LiLi YANG XiYan ZHANG XianLong WANG ZhiWei FENG ChangHui LIU ChuanXiang JIANG Pei-Yong ZHANG JinLong | 2009 | Chinese Science Bulletin2009，54，17： | 3 |
| 3 | A practical method utilizing multi-spectral LiDAR to aid points cloud matching in SLAM显示文摘Light Detection and Ranging(LiDAR)sensors are popular in Simultaneous Localization and Mapping(SLAM)owing to their capability of obtaining ranging information actively.Researchers have attempted to use the intensity information that accompanies each range measurement to enhance LiDAR SLAM positioning accuracy.However,before employing LiDAR intensities in SLAM,a calibration operation is usually carried out so that the intensity is independent of the incident angle and range.The range is determined from the laser beam transmitting time.Therefore,the key to using LiDAR intensities in SLAM is to obtain the incident angle between the laser beam and target surface.In a complex environment,it is difficult to obtain the incident angle robustly.This procedure also complicates the data processing in SLAM and as a result,further application of the LiDAR intensity in SLAM is hampered.Motivated by this problem,in the present study,we propose a Hyperspectral LiDAR(HSL)-based-intensity calibration-free method to aid point cloud matching in SLAM.HSL employed in this study can obtain an eight-channel range accompanied by corresponding intensity measurements.Owing to the design of the laser,the eight-channel range and intensity were collected with the same incident angle and range.According to the laser beam radiation model,the ratio values between two randomly selected channels’intensities at an identical target are independent of the range information and incident angle.To test the proposed method,the HSL was employed to scan a wall with different coloured papers pasted on it(white,red,yellow,pink,and green)at four distinct positions along a corridor(with an interval of 60 cm in between two consecutive positions).Then,a ratio value vector was constructed for each scan.The ratio value vectors between consecutive laser scans were employed to match the point cloud.A classic Iterative Closest Point(ICP)algorithm was employed to estimate the HSL motion using the range information from the matched point clouds.According to the test results,we found that pink and green papers were distinctive at 650,690,and 720 nm.A ratio value vector was constructed using 650-nm spectral information against the reference channel.Furthermore,compared with the classic ICP using range information only,the proposed method that matched ratio value vectors presented an improved performance in heading angle estimation.For the best case in the field test,the proposed method enhanced the heading angle estimation by 72%,and showed an average 25.5%improvement in a featureless spatial testing environment.The results of the primary test indicated that the proposed method has the potential to aid point cloud matching in typical SLAM of real scenarios. | Changhui Jiang Yuwei Chen Wenxin Tian Ziyi Feng Wei Li Chunchen Zhou Hui Shao Eetu Puttonen Juha Hyyppä | 2020 | Satellite Navigation2020，1，1： | 2 |
| 4 | Analysis of short fruiting branch gene and Marker-assisted selection with SNP linked to its trait in upland cotton显示文摘Background: With the rapid development of genomics, many functional genes have been targeted. Molecular marker assisted selection can accelerate the breeding process by linking selection to functional genes.Methods: In a study of upland cotton(Gossypium hirsutum L.), the F_2 segregated population was constructed by crossing X1570(short branches) with Ekangmian-13(long branches) to identify the short fruiting branch gene and marker-assisted selection with SNP(Single Nucleotide Polymorphisms, SNP) linked to its trait.Result: The result demonstrated that linked SSR marker BNL3232 was screened by BSA(Bulked segregant analysis,BSA) method; one SNP locus was found, which was totally separated from the fruiting branches trait in upland cotton.Conclusion: It was verified that this SNP marker could be used for molecular assisted selection of cotton architecture. | ZHANG Youchang FENG Changhui BIE Shu WANG Xiaogang ZHANG Jiaohai XIA Songbo QIN Hongde | 2018 | Journal of Cotton Research2018，1，1： | 1 |
| 5 | Ground-layer adaptive optics for the New Vacuum Solar Telescope:Instrument description and first results显示文摘Ground-layer adaptive optics(GLAO)has shown its potential for use in solar observation owing to its wide field-of-view(FOV)correction.A high-order GLAO system that consists of a multiple direction Shack-Hartmann wavefront sensor(WFS),a realtime controller with a multi-CPU processor,and a 151-element deformable mirror was developed for the 1-m New Vacuum Solar Telescope at Yunnan Observatories,Chinese Academy of Sciences.A hexagonal microlens with 9×8 subapertures is employed in the WFS.The detection FOV is 42′′×37′′,in which 9(3×3)guide regions are extracted for multiple direction wavefront sensing with a frame rate of up to 2200 Hz.To our knowledge,this is the first professional solar GLAO system used as a regularly operating instrument for scientific observations.Its installation and adjustment were performed in the summer of 2021.In this article,a detailed account of the GLAO system and its first light results and a comprehensive analysis of the performance of the GLAO system are provided.The results show that this system can effectively improve the imaging quality after compensating for the wavefront aberration due to ground-layer turbulence. | Lanqiang Zhang Hua Bao Xuejun Rao Youming Guo Libo Zhong Xian Ran Nanfei Yan Jinsheng Yang Cheng Wang Jiahui Zhou Ying Yang Yunyao Long Xinlong Fan Zhongyi Feng Donghong Chen Changhui Rao | 2023 | Science China(Physics,Mechanics & Astronomy)2023，66，6： | 1 |
| 6 | Cloning and Expression Analysis of Chalcone Synthase and Chalcone Isomerase Encoding Genes in Gossypium hirsutum显示文摘In this study,chalcone synthase and chalcone isomerase encoding genes( GhCHS and GhCHI) were cloned from upland cotton( Gossypium hirsutum)cultivar HM-40,and analyzed bioinformatically. Their functions were analyzed through virus induced gene silencing( VIGS). The results showed that GhCHS gene has an open reading frame( ORF) of 1 170 bp and encodes a protein of 389 amino acids. Many phosphorylation sites were detected in GhCHS protein,suggesting that it may be involved in kinase phosphorylation. The deduced GhCHS protein was most closely related to Theobroma cacao CHS protein according to phylogenetic analysis. The GhCHI ORF was 630 bp and encoded a protein of 209 amino acids. Many phosphorylation sites were found in GhCHI protein,indicating that it may be related to kinase phosphorylation. The GhCHI protein was most closely related to Hibiscus cannabinus CHI protein according to phylogenetic analysis. Quantitative PCR( q PCR) showed that GhCHS and GhCHI were rapidly activated after inoculation with Verticillium dahliae VD07,and then their expression levels kept increasing over time,indicating that the two genes might play an important role in the defense response against Verticillium wilt. Virus induced gene silencing( VIGS) was used to silence endogenous GhCHS and GhCHI genes in upland cotton plants before VD07 was inoculated to identify disease resistance. The results showed that the disease index of plants untreated with Agrobacterium tumefaciens was 31. 2,and that of the plants inoculated with empty vector was 30. 0. The disease index of GhCHS-silenced plants was 72. 5,and that in GhCHI-silenced plants was 67. 5. These results confirmed that GhCHS and GhCHI may play an important role in defense response of upland cotton to Verticillium wilt. | chengpan song songbo xia xiaogang wang jiaohai zhang hongde qin youchang zhang changhui feng shu bie | 2018 | Agricultural Biotechnology2018，7，2： | 0 |
| 7 | Collaborative positioning for swarms:A brief survey of vision,LiDAR and wireless sensors based methods显示文摘As positioning sensors,edge computation power,and communication technologies continue to develop,a moving agent can now sense its surroundings and communicate with other agents.By receiving spatial information from both its environment and other agents,an agent can use various methods and sensor types to localize itself.With its high flexibility and robustness,collaborative positioning has become a widely used method in both military and civilian applications.This paper introduces the basic fundamental concepts and applications of collaborative positioning,and reviews recent progress in the field based on camera,LiDAR(Light Detection and Ranging),wireless sensor,and their integration.The paper compares the current methods with respect to their sensor type,summarizes their main paradigms,and analyzes their evaluation experiments.Finally,the paper discusses the main challenges and open issues that require further research. | Zeyu Li Changhui Jiang Xiaobo Gu Ying Xu Feng zhou Jianhui Cui | 2024 | Defence Technology(防务技术)2024，33，3： | 0 |
| 8 | Solar adaptive optics systems for the New Vacuum Solar Telescope at the Fuxian Lake Solar Observatory显示文摘Adaptive optics(AO)is essential for high-quality ground-based observations with large telescopes because it counters the impact of wavefront aberrations caused by atmospheric turbulence.The new vacuum solar telescope(NVST)is one of the most important high-resolution solar observation instruments in the world.Three sets of solar adaptive optics systems have been developed and installed on this telescope:conventional adaptive optics,ground layer adaptive optics,and multi-conjugate adaptive optics.These have been in operation from 2018 to 2023.This paper details the development and application of solar adaptive optics on the NVST and discusses the newest instrumentation. | Lanqiang Zhang Xuejun Rao Hua Bao Youming Guo Jinsheng Yang Nanfei Yan Xian Ran Dingkang Tong Xinlong Fan Zhongyi Feng Changhui Rao | 2024 | Astronomical Techniques and Instruments2024，1，2： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员