A5037623842- Natural product bioactivities and synthesis
- Chromatography in Natural Products
- Toxic Organic Pollutants Impact
- Polysaccharides and Plant Cell Walls
- Urban Heat Island Mitigation
- Advanced Neural Network Applications
- Advanced Image and Video Retrieval Techniques
- Fish Ecology and Management Studies
- Inertial Sensor and Navigation
- Natural Compound Pharmacology Studies
- Biofuel production and bioconversion
- Plant Toxicity and Pharmacological Properties
- Advanced Algorithms and Applications
- Effects and risks of endocrine disrupting chemicals
- Microbial Metabolic Engineering and Bioproduction
- Microplastics and Plastic Pollution
- Fish Biology and Ecology Studies
- Remote Sensing and LiDAR Applications
- Video Surveillance and Tracking Methods
- Advanced Computing and Algorithms
- International Maritime Law Issues
- Freshwater macroinvertebrate diversity and ecology
- Advanced Synthetic Organic Chemistry
- COVID-19 diagnosis using AI
- Fault Detection and Control Systems
Chinese Academy of Fishery Sciences
2016-2025
Shandong Provincial Hospital
2025
KTH Royal Institute of Technology
2024
Chongqing University
2015-2022
Ministry of Agriculture and Rural Affairs
2022
Nanjing Tech University
2021-2022
Georgia Institute of Technology
2020-2021
Georgia Tech Research Institute
2020
Chengdu University
2020
Chongqing University of Technology
2019
The Yangtze River is the mother river of China. To promote aquatic ecosystem protection great river, Project Fisheries Resources and Environment Investigation (2017–2021) supported by Ministry Agriculture Rural Affairs, P. R. China carried out 24 institutes universities that located in basin surveys status (1) fish species composition spatial distribution, (2) current abundance, (3) endangered fishes, (4) finless porpoise, (5) eco-environments, (6) water-level fluctuation areas, (7) capture...
Recently, using unmanned Aerial Vehicle(UAV) to capture images has become a popular application. However, the large scale variation and dense object distribution characteristic of UAV brings challenges detection. Hence, we propose an efficient end-to-end detector named SPB-YOLO for images. In this paper, firstly design Strip Bottleneck (SPB) module better understand width-height dependency by attention mechanism improving detection sensitivity different scales' objects in image. Secondly,...
Xylanases produce xylooligosaccharides from xylan and have thus attracted increasing attention for their usefulness in industrial applications. Previously, we demonstrated that the GH11 xylanase XynLC9 Bacillus subtilis formed xylobiose xylotriose as major products with negligible production of xylose when digesting corncob-extracted xylan. Here, aimed to improve catalytic performance via protein engineering. Based on sequence structural comparisons xylanases Xyn2 Trichoderma reesei Xyn11A...
Growing demand for seafood and reduced fishery harvests have raised intensive farming of marine aquaculture in coastal regions, which may cause severe water problems without adequate environmental management. Effective mapping mariculture areas is essential the protection environments. However, due to limited spatial coverage complex structures, it still challenging traditional methods accurately extract from medium resolution (MSR) images. To solve this problem, we propose use full cascade...
Pyrrolizidine alkaloids are the toxic components in Tussilago farfara L. Due to lack of standard substances for quantitative analysis and traces pyrrolizidine total alkaloids, full quality control L has been limited. In this study, we aimed solve difficulty determination identify more alkaloids. An on-line preconcentration method applied improve determining sensitivity which included field-amplified sample stacking sweeping micellar electrokinetic capillary chromatography. The main...
River–lake interaction is important for maintaining biodiversity, yet it vulnerable to hydrological alteration. The connectivity of the channel connecting Poyang Lake and Yangtze River not only ensures regular migration fish but also makes a feeding fattening ground them. Unfortunately, human activities have dramatically changed hydrodynamic conditions Lake, which experiencing severe drought due obvious decline in water level autumn winter, especially since 2003. However, possible impacts...
A new sesquiterpenoid, 10α-methoxyartemisinic acid (1) was isolated from Saussurea lappa roots along with two known compounds, costunolide (2) and dehydrocostus lactone (3) by high-speed countercurrent chromatography purities of 85, 95 98%, respectively. Their structures were determined on the basis spectral data including 1D 2D NMR HREIMS.
Land surface temperature (LST) is an essential parameter widely used in environmental studies. The Medium Resolution Spectral Imager II (MERSI-II) boarded on the second generation Chinese polar-orbiting meteorological satellite, Fengyun-3D (FY-3D), provides a new opportunity for LST retrieval at spatial resolution of 250 m that higher than already Moderate Imaging Spectrometer (MODIS) data 1000 m. However, there no operational product from FY-3D MERSI-II available free access. Therefore,...
PDF HTML阅读 XML下载 导出引用 引用提醒 基于渔获物统计的中国近海鱼类营养级结构变换及其与捕捞作业的关系 DOI: 作者: 作者单位: 中国水产科学研究院 资源与环境研究中心, 北京 100141 作者简介: 李继龙(1958-),男,研究员,主要从事水生生物资源、生态环境以及遥感应用研究.E-mail:lijilong@cafs.ac.cn 通讯作者: 中图分类号: S931 基金项目: 国家863计划项目（2009AA09Z401）；科技部国际科技合作专项（2013DFA31410）；农业财政专项（2130135-01011）；国家海洋事业发展“十三五”规划研究课题（OSS2014-20）. Changes in trophic-level structure of the main fish species caught by China and their relationship with fishing method Author: Affiliation: Center Resource Ecology Environment Research,...
Sesquiterpenoids, such as tussilagone, has effects of raising blood pressure, antiplatelet aggregation, and anti-inflammation activities, which is regarded index compound for quality control Tussilago farfara L.This study was aimed to obtain an effective method fast isolation sesquiterpenoids from T. L. by high-speed counter-current chromatography (HSCCC).A solvent optimization HSCCC presented, i.e., the separation factors compounds after K values system should be investigated.A ternary...
Sesquiterpenes lactones including costunolide and dehydrocostus lactone, were isolated from Saussurea lappa roots, which had exhibited a wide range of biological activities such as anti-cancer, anti-inflammatory, antiulcer, immunomodulatory activities. High-speed counter-current chromatography (HSCCC) was applied for the rapid preparative isolation sesquiterpenes roots. A solvent optimization method HSCCC presented, i.e. separation factors compounds after partition coefficient (K) system...
Pseudorange errors are the root cause of localization inaccuracy in GPS. Previous data-driven methods regress and eliminate pseudorange using handcrafted intermediate labels. Unlike them, we propose an end-to-end GPS framework, E2E-PrNet, to train a neural network for correction (PrNet) directly final task loss calculated with ground truth receiver states. The gradients respect learnable parameters backpropagated through differentiable nonlinear least squares optimizer PrNet. feasibility is...
In this study, a β-galactosidase gene (btgal42) was first cloned from Bifidobacterium thermophilum and successfully expressed in Escherichia coli. The molecular weight of the purified BtGal42 estimated to be 78 kDa by sodium dodecyl sulfate-polyacrylamide gel electrophoresis 225 size-exclusion chromatography, indicating that native homotrimer. belonged glycosidase hydrolase family 42, exhibiting maximum activity at pH 7 temperature 50°C. enzyme displayed strictly specific toward substrates...
As a competitive solution to the short-range high data-rate communication, Multi-Band Orthogonal Frequency Division Multiplexing (MB-OFDM) Ultra-wideband (UWB) technique can obtain further performance improvement with use of adaptive resource allocation schemes. In this paper, an incremental bit algorithm is proposed for MB-OFDM UWB system, which aims at minimum error rate (BER) under constant constraint while complying spectral mask limit. The BER and transmission distance extension due...