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| 1 | Processes of coastal ecosystem carbon sequestration and approaches for increasing carbon sink显示文摘The oceans are the largest carbon pools on Earth, and play the role of a 'buffer' in climate change. Blue carbon, the carbon(mainly organic carbon) captured by marine ecosystems, is one of the important mechanisms of marine carbon storage.Blue carbon was initially recognized only in the form of visible coastal plant carbon sequestration. In fact, microorganisms(phytoplankton, bacteria, archaea, viruses, and protozoa), which did not receive much attention in the past, account for more than 90% of the total marine biomass and are the main contributors to blue carbon. Chinese coastal seas, equivalent to 1/3 of China's total land area, have a huge carbon sink potential needing urgently research and development. In this paper, we focus on the processes and mechanisms of coastal ocean's carbon sequestration and the approaches for increasing that sequestration. We discuss the structures of coastal ecosystems, the processes of carbon cycle, and the mechanisms of carbon sequestration. Using the evolution of coastal ocean's carbon sinks in sedimentary records over geologic times, we also discuss the possible effects of natural processes and anthropogenic activities on marine carbon sinks. Finally, we discuss the prospect of using carbon sequestration engineering for increasing coastal ocean's carbon storage capacity. | ZHANG Yao ZHAO MeiXun CUI Qiu FAN Wei QI JiaGuo CHEN Ying ZHANG YongYu GAO KunShan FAN JingFeng WANG GuangYi YAN ChongLing LU HaoLiang LUO YaWei ZHANG ZiLian ZHENG Qiang XIAO Wei JIAO NianZhi | 2017 | Science China Earth Sciences2017，60，5： | 6 |
| 2 | Maiden Flight of Long March 7--The New Generation Medium Launch Vehicle in China显示文摘On June 25, 2016, the Long March 7(LM-7) launch vehicle completed its maiden flight successfully. LM-7, as a new generation of medium and basic launch vehicle based on the design concepts of non-toxic and nonpolluting, was developed for the purpose of launching a cargo spacecraft to the Chinese space station. Based on the experience on launching cargo spacecraft and satellites, LM-7 can be adapted for mainstream satellite launch missions in the future with its characteristics of serialization and continuous optimization. LM-7 is expected to be used to launch manned spacecraft in the future. This paper presents a general review of LM-7 with regard to the general scheme and provides references for the development prospects of a medium launch vehicle series in China. | WANG Xiaojun FAN Ruixiang CHENG Tangming XU Lijie YANG Haoliang | 2016 | Aerospace China2016，17，3： | 2 |
| 3 | The Reliable and Intelligent Propulsion Pressurization System of the Long March 7 Launch Vehicle显示文摘The reliable and intelligent propulsion pressurization system is one of the key technologies of new Chinese generation launch vehicles; a high reliability design is an important guarantee for the success of launching. This paper analyzes the domestic and overseas liquid launch vehicles in the area of propulsion pressurization systems, based on comprehensive analysis, demonstrating the reliable and intelligent propulsion pressurization system of the Long March 7(Simplified as LM-7) has been raised. By applying a full chain redundancy design, setting proper pressure control bandwidth and control mode reconstruction under extreme fault conditions, the reliability and adaptability of the propulsion pressurization system has enhanced significantly. In addition, the complete system has been verified by the first two flights of LM-7. | FAN Ruixiang DENG Xinyu SHAO Yetao YANG Haoliang TIAN Yurong | 2017 | Aerospace China2017，18，4： | 1 |
| 4 | Multi-Scale Image Segmentation Model for Fine-Grained Recognition of Zanthoxylum Rust显示文摘Zanthoxylum bungeanum Maxim,generally called prickly ash,is widely grown in China.Zanthoxylum rust is the main disease affecting the growth and quality of Zanthoxylum.Traditional method for recognizing the degree of infection of Zanthoxylum rust mainly rely on manual experience.Due to the complex colors and shapes of rust areas,the accuracy of manual recognition is low and difficult to be quantified.In recent years,the application of artificial intelligence technology in the agricultural field has gradually increased.In this paper,based on the DeepLabV2 model,we proposed a Zanthoxylum rust image segmentation model based on the FASPP module and enhanced features of rust areas.This paper constructed a fine-grained Zanthoxylum rust image dataset.In this dataset,the Zanthoxylum rust image was segmented and labeled according to leaves,spore piles,and brown lesions.The experimental results showed that the Zanthoxylum rust image segmentation method proposed in this paper was effective.The segmentation accuracy rates of leaves,spore piles and brown lesions reached 99.66%,85.16%and 82.47%respectively.MPA reached 91.80%,and MIoU reached 84.99%.At the same time,the proposed image segmentation model also had good efficiency,which can process 22 images per minute.This article provides an intelligent method for efficiently and accurately recognizing the degree of infection of Zanthoxylum rust. | Fan Yang Jie Xu Haoliang Wei Meng Ye Mingzhu Xu Qiuru Fu Lingfei Ren Zhengwen Huang | 2022 | Computers, Materials & Continua2022，，5： | 0 |
| 5 | Genetic polymorphisms and phylogenetic analyses of the Ü-Tsang Tibetan from Lhasa based on 30 slowly and moderately mutated Y-STR loci显示文摘As a result of the expansion of old Tibet on the Qinghai-Tibet Plateau,Tibetans diverged into three main branches,Ü-Tsang,Amdo,and Kham Tibetan.Ü-Tsang Tibetans are geographically distributed across the wide central and western portions of the Qinghai-Tibet Plateau while Lhasa is the central gathering place for Tibetan culture.The AGCU Y30,a 6-dye fluorescence kit including 30 slowly and moderately mutated Y-STR loci,has been validated for its stability and sensitivity in different biomaterials and diverse Chinese populations(Han and other minorities),and widely used in the practical work of forensic science.However,the 30 Y-STR profiling of Tibetan,especially forÜ-Tsang Tibetan,were insufficient.We utilized the AGCU Y30 to genotype 577Ü-Tsang Tibetan unrelated males from Lhasa in the Tibet Autonomous Region of China to fill up the full and accurate Y-STR profiles.A total of 552 haplotypes were observed,536(97.10%)of which were unique.One hundred and ninety-four alleles were observed at 26 single copy loci and the allelic frequencies ranged from 0.0017 to 0.8180.For the two multi-copy loci DYS385a/b and DYS527a/b,64 and 36 allelic combinations were observed,respectively.The gene diversity(GD)values ranged from 0.3079 at DYS391 to 0.9142 at DYS385a/b and the overall haplotype diversity(HD)was 0.9998,and its discrimination capacity(DC)was 0.9567.The population genetic analyses demonstrated that LhasaÜ-Tsang Tibetan had close relationships with other Tibetan populations from Tibet and Qinghai,especially withÜ-Tsang Tibetan.From the perspective of Y haplogroups,the admixture of the southward Qiang people with dominant haplogroup O-M122 and the northward migrations of the initial settlers of East Asia with haplogroup D-M175 hinted the Sino-Tibetan homologous,thus,we could not ignore the gene flows with other Sino-Tibetan populations,especially for Han Chinese,to characterize the forensic genetic landscape of Tibetan. | Jiuyang Ding Haoliang Fan Yongsong Zhou Zhuo Wang Xiao Wang Xuheng Song Bofeng Zhu Pingming Qiu | 2022 | Forensic Sciences Research2022，7，2： | 0 |
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