263 results on '"Lin, Long"'
Search Results
2. Expert consensus on emergency procedures for portal hypertension bleeding (2022)
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Lin Sun, Lin Long, Qing Wang, Hua Xiang, Cai Huangxing, Chai Yanfang, Chen Feng, Cheng Wei, Chu Jianguo, Shan Aijun, Deng Ying, Fang Bangjiang, Feng Zhijie, Gao Fei, Han Xiaotong, Huang Mingsheng, Jin Guiyun, null Jinlong, Li Jiaping, Li Lei, Li Peiwu, Li Xiao, Li Zhanfei, Li Zhen, Liu Fuquan, Liu Jueshi, Liu Peng, Liu Xiaoran, Lu Ligong, Luo Jianjun, Luo Xuefeng, Lv Chuanzhu, Lv Weifu, Ma Qingbian, Ma Yilong, Mao Zhiqun, Peng Ya, Sun Junhui, Tie Jun, Tan Xianzheng, Wang Qing, Wang Rixing, Wang Yong, Wei An, Xia Zhiyu, Xiang Bin, Xiong Bin, Xu Shuogui, Xue Hui, Yang Weizhu, Yuan Min, Zhang Chunqing, Zhang Guoqiang, Zhang Jianfeng, Zhang Jinxiang, Zhang Zhiming, Zhao Jianbo, Zhao Xiaodong, Zhou Fachun, Zhou Shi, Zhu Xiaoli, Zhu Changju, Zhuge Yu Zheng, Zhu Yimin, and Zou Yinghua
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General Medicine - Published
- 2023
3. Comparison study on the impact compression mechanical properties of coral aggregate concrete and ordinary Portland concrete
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Yang Cai, Hui-qi Ren, Zhi-lin Long, Rui-qi Guo, Kuang-min Du, Sha-sha Chen, and Zhi-hao Zheng
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Architecture ,Building and Construction ,Safety, Risk, Reliability and Quality ,Civil and Structural Engineering - Published
- 2022
4. Molecular Tweezer Based on Perylene and Crown Ether for Selective Recognition of Fullerenes
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Ke Luan, Qiao-Fen Lin, Fang-Fang Xie, Yu Wang, Yun-Fei Li, Lu Wang, Lin-Long Deng, Su-Yuan Xie, and Lan-Sun Zheng
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General Chemical Engineering ,General Chemistry - Abstract
A molecular tweezer
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- 2022
5. Intelligent Identification of Pine Wilt Disease Infected Individual Trees Using UAV-Based Hyperspectral Imagery
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Zhang, Haocheng Li, Long Chen, Zongqi Yao, Niwen Li, Lin Long, and Xiaoli
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UAV ,hyperspectral imagery ,pine wilt disease ,Mask R-CNN ,prototypical network - Abstract
The pine wood nematode (PWN; Bursaphelenchus xylophilus) is a major invasive species in China, causing huge economic and ecological damage to the country due to the absence of natural enemies and the extremely rapid rate of infection and spread. Accurate monitoring of pine wilt disease (PWD) is a prerequisite for timely and effective disaster prevention and control. UAVs can carry hyperspectral sensors for near-ground remote sensing observations, which can obtain rich spatial and spectral information and have the potential for infected tree identification. Deep learning techniques can use rich multidimensional data to mine deep features in order to achieve tasks such as classification and target identification. Therefore, we propose an improved Mask R-CNN instance segmentation method and an integrated approach combining a prototypical network classification model with an individual tree segmentation algorithm to verify the possibility of deep learning models and UAV hyperspectral imagery for identifying infected individual trees at different stages of PWD. The results showed that both methods achieved good performance for PWD identification: the overall accuracy of the improved Mask R-CNN with the screened bands as input data was 71%, and the integrated method combining prototypical network classification model with individual tree segmentation obtained an overall accuracy of 83.51% based on the screened bands data, in which the early infected pine trees were identified with an accuracy of 74.89%. This study indicates that the improved Mask R-CNN and integrated prototypical network method are effective and practical for PWD-infected individual trees identification using UAV hyperspectral data, and the proposed integrated prototypical network enables early identification of PWD, providing a new technical guidance for early monitoring and control of PWD.
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- 2023
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6. Predicting Multi-Codebook Vector Quantization Indexes for Knowledge Distillation
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Guo, Liyong, Yang, Xiaoyu, Wang, Quandong, Kong, Yuxiang, Yao, Zengwei, Cui, Fan, Kuang, Fangjun, Kang, Wei, Lin, Long, Luo, Mingshuang, Zelasko, Piotr, and Povey, Daniel
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FOS: Computer and information sciences ,Sound (cs.SD) ,Computer Science - Computation and Language ,Audio and Speech Processing (eess.AS) ,FOS: Electrical engineering, electronic engineering, information engineering ,Computation and Language (cs.CL) ,Computer Science - Sound ,Electrical Engineering and Systems Science - Audio and Speech Processing - Abstract
Knowledge distillation(KD) is a common approach to improve model performance in automatic speech recognition (ASR), where a student model is trained to imitate the output behaviour of a teacher model. However, traditional KD methods suffer from teacher label storage issue, especially when the training corpora are large. Although on-the-fly teacher label generation tackles this issue, the training speed is significantly slower as the teacher model has to be evaluated every batch. In this paper, we reformulate the generation of teacher label as a codec problem. We propose a novel Multi-codebook Vector Quantization (MVQ) approach that compresses teacher embeddings to codebook indexes (CI). Based on this, a KD training framework (MVQ-KD) is proposed where a student model predicts the CI generated from the embeddings of a self-supervised pre-trained teacher model. Experiments on the LibriSpeech clean-100 hour show that MVQ-KD framework achieves comparable performance as traditional KD methods (l1, l2), while requiring 256 times less storage. When the full LibriSpeech dataset is used, MVQ-KD framework results in 13.8% and 8.2% relative word error rate reductions (WERRs) for non -streaming transducer on test-clean and test-other and 4.0% and 4.9% for streaming transducer. The implementation of this work is already released as a part of the open-source project icefall., Comment: Submitted to ICASSP 2022
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- 2023
7. Interaction between major catechins and umami amino acids in green tea based on electronic tongue technology
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Zhongying Liu, Qiansong Ran, Qin Li, Ting Yang, Yuqiao Dai, Tuo Zhang, Shimao Fang, Ke Pan, and Lin Long
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Food Science - Published
- 2023
8. Surface Re-Engineering of Perovskites with Buckybowls to Boost the Inverted-Type Photovoltaics
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Zhou Xing, Ming-Wei An, Zuo-Chang Chen, Mingyu Hu, Xianzhen Huang, Lin-Long Deng, Qianyan Zhang, Xugang Guo, Su-Yuan Xie, and Shihe Yang
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Colloid and Surface Chemistry ,General Chemistry ,Biochemistry ,Catalysis - Abstract
Despite their multifaceted advantages, inverted perovskite solar cells (PSCs) still suffer from lower power conversion efficiencies (PCEs) than their regular counterparts, which is largely due to recombination energy losses (
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- 2022
9. Differences in the secondary metabolites of different varieties of black tea and evaluation of their disease-resistance activity
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Zhongying Liu, Tuo Zhang, Qiansong Ran, Shimao Fang, Ke Pan, and Lin Long
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Rich secondary metabolites render black tea its unique flavor and health benefits, making it the most widely consumed tea in the world. Yet, few studies have investigated the differences in secondary metabolites between black-tea varieties and whether secondary metabolites have antidisease activity. Using gas chromatography-tandem mass spectrometry metabolomics and the Traditional Chinese Herbal Medicine Systems Pharmacology Platform database, this study investigated differences in the secondary metabolites of varieties of black tea, including Fuding Dabai (FD), Golden Guanyin (JGY), Golden Peony (JMD), Qianmei 601 (Q601), and Qiancha 1 (Q). Then, the antidisease activity of their secondary metabolites was evaluated. A total of 657 secondary metabolites were identified in the different black-tea varieties. Among them, 183 metabolites had antidisease activity, 113 were key active ingredients in traditional Chinese medicine (TCM), 73.22% had multiple antidisease activities, and all were mainly flavonoids and phenolic acids. The specific differential metabolites of FD vs JGY, FD vs JMD, FD vs Q, and FD vs Q601 and their disease-resistance activities were (67, 17), (24, 5), (26, 6), and (65, 8), respectively. The main enriched metabolic pathways were phenylpropanoid biosynthesis, biosynthesis of secondary metabolites, flavonoid biosynthesis, and metabolic pathways, with four, four, six, and five key metabolites, respectively. Flavonoid and phenolic acid secondary metabolites were more correlated with antidisease activity and key active TCM ingredients. Conclusion: The types of secondary metabolites were consistent among the different black-tea varieties, while the relative contents differed significantly, with greater differences in secondary metabolites between JGY and Q601. Flavonoid and phenolic acid secondary metabolites were the main contributors to the differences in secondary metabolites and the disease-resistance activity of different black-tea varieties, followed by lignans with coumarins, alkaloids, and tannins also contributing to disease-resistance activity. These findings improve our understanding of the secondary metabolites and health benefits of different varieties of black tea.
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- 2023
10. Honoring a legend: Celebrating the life and legacy of Professor Heng Li
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Hui-Jun Guo, Jin-Ling Huang, Yun-Heng Ji, Rong Li, Chun-Lin Long, Qin-Er Yang, Yong-Ping Yang, and Ting-Shuang Yi
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Plant Science ,Ecology, Evolution, Behavior and Systematics - Published
- 2023
11. Design, synthesis, and biological evaluation of 1-styrenyl isoquinoline derivatives for anti-hepatocellular carcinoma activity and effect on mitochondria
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Yuqing Wang, Lin Long, Linsheng Zhuo, Honghua Zhang, Tian Luo, Jiedan Deng, Yuying Wang, Zhao Li, Zhen Wang, and Xue Peng
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Pharmacology ,Organic Chemistry ,Drug Discovery ,General Medicine - Published
- 2023
12. Verbascoside enhances radiosensitivity of hepatocellular carcinoma cells through regulating <scp>miR</scp> ‐101‐3p/Wee1 axis
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Lin Sun, Huangxing Cai, Tengchao Zhou, Hua Xiang, and Lin Long
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Carcinoma, Hepatocellular ,Liver Neoplasms ,Cell Cycle Proteins ,Hep G2 Cells ,Protein-Tyrosine Kinases ,Radiation Tolerance ,Sincalide ,Gene Expression Regulation, Neoplastic ,MicroRNAs ,Glucosides ,Phenols ,Cell Line, Tumor ,Drug Discovery ,Humans ,Cell Proliferation - Abstract
Verbascoside is a kind of phenylpropanoid glycoside derived from multiple medicinal plants, exerting anti-tumor effects in diverse human malignancies. However, the function of Verbascoside on the radiosensitivity of hepatocellular carcinoma (HCC) cells remains unknown. Human Huh7 and HepG2 cell lines were treated with Verbascosideis, and cell viability was detected with cell counting kit-8 (CCK-8) assay. Quantitative real-time polymerase chain reaction (qRT-PCR) was applied to detect miR-101-3p expression, and Western blot was used to quantify the expression of WEE1 G2 checkpoint kinase (WEE1). Then, CCK-8 and flow cytometry assays were used to detect the proliferation and apoptosis of HCC cells after Verbascoside and X-ray combined treatment, and the expressions of WEE1 and apoptosis-related proteins Bax and Bcl-2 were detected by Western blot. Verbascoside could improve the radiosensitivity of HCC cells in a dose-dependent manner. Verbascoside increased the expression of miR-101-3p but reduced WEE1 expression in HCC cells. Additionally, WEE1 was identified as a target of miR-101-3p. MiR-101-3p inhibition or WEE1 overexpression could reverse the effect of Verbascoside on the viability and apoptosis of HCC cells. Verbascoside increases the radiosensitivity of hepatocellular carcinoma cells via modulating miR-101-3p/WEE1 axis.
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- 2022
13. Lysobacter enzymogenes prevents Phytophthora infection by inhibiting pathogen growth and eliciting plant immune responses
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Lin, Long, Yang, Zixiang, Tao, Min, Shen, Danyu, Cui, Chuanbin, Wang, Pingping, Wang, Limin, Jing, Maofeng, Qian, Guoliang, and Shao, Xiaolong
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Plant Science - Abstract
The Phytophthora pathogen causes enormous damage to important agricultural plants. This group of filamentous pathogens is phylogenetically distant from fungi, making them difficult to control by most chemical fungicides. Lysobacter enzymogenes OH11 (OH11) is a biocontrol bacterium that secretes HSAF (Heat-Stable Antifungal Factor) as a broad-spectrum antifungal weapon. Here, we showed that OH11 could also control a variety of plant Phytophthora diseases caused by three major oomycetes (P. sojae, P. capsici and P. infestans). We provided abundant evidence to prove that OH11 protected host plants from Phytophthora pathogen infection by inhibiting mycelial growth, digesting cysts, suppressing cyst germination, and eliciting plant immune responses. Interestingly, the former two processes required the presence of HSAF, while the latter two did not. This suggested that L. enzymogenes could prevent Phytophthora infection via multiple previously unknown mechanisms. Therefore, this study showed that L. enzymogenes could serve as a promising alternative resource for promoting plant resistance to multiple Phytophthora pathogens.
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- 2023
14. Experimental Study on High Temperatures Performance of Rubberized Geopolymer Mortar
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Fenglan Kuang, Zhi-lin Long, Dumin Kuang, Ruiqi Guo, and Jinlei Sun
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- 2023
15. Blank-regularized CTC for Frame Skipping in Neural Transducer
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Yang, Yifan, Yang, Xiaoyu, Guo, Liyong, Yao, Zengwei, Kang, Wei, Kuang, Fangjun, Lin, Long, Chen, Xie, and Povey, Daniel
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FOS: Computer and information sciences ,Computer Science - Computation and Language ,Audio and Speech Processing (eess.AS) ,FOS: Electrical engineering, electronic engineering, information engineering ,Computation and Language (cs.CL) ,Electrical Engineering and Systems Science - Audio and Speech Processing - Abstract
Neural Transducer and connectionist temporal classification (CTC) are popular end-to-end automatic speech recognition systems. Due to their frame-synchronous design, blank symbols are introduced to address the length mismatch between acoustic frames and output tokens, which might bring redundant computation. Previous studies managed to accelerate the training and inference of neural Transducers by discarding frames based on the blank symbols predicted by a co-trained CTC. However, there is no guarantee that the co-trained CTC can maximize the ratio of blank symbols. This paper proposes two novel regularization methods to explicitly encourage more blanks by constraining the self-loop of non-blank symbols in the CTC. It is interesting to find that the frame reduction ratio of the neural Transducer can approach the theoretical boundary. Experiments on LibriSpeech corpus show that our proposed method accelerates the inference of neural Transducer by 4 times without sacrificing performance. Our work is open-sourced and publicly available https://github.com/k2-fsa/icefall., Comment: Accepted in INTERSPEECH 2023
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- 2023
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16. Interpretation of Zoroastrian Cultural Connotation in the Images Inside Yu Hong’s Tomb from Sui Dynasty in Shanxi Province
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Yangyang Ju, Ruohan Li, and Lin Long
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- 2023
17. Delay-penalized CTC implemented based on Finite State Transducer
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Yao, Zengwei, Kang, Wei, Kuang, Fangjun, Guo, Liyong, Yang, Xiaoyu, Yang, Yifan, Lin, Long, and Povey, Daniel
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Audio and Speech Processing (eess.AS) ,FOS: Electrical engineering, electronic engineering, information engineering ,Electrical Engineering and Systems Science - Audio and Speech Processing - Abstract
Connectionist Temporal Classification (CTC) suffers from the latency problem when applied to streaming models. We argue that in CTC lattice, the alignments that can access more future context are preferred during training, thereby leading to higher symbol delay. In this work we propose the delay-penalized CTC which is augmented with latency penalty regularization. We devise a flexible and efficient implementation based on the differentiable Finite State Transducer (FST). Specifically, by attaching a binary attribute to CTC topology, we can locate the frames that firstly emit non-blank tokens on the resulting CTC lattice, and add the frame offsets to the log-probabilities. Experimental results demonstrate the effectiveness of our proposed delay-penalized CTC, which is able to balance the delay-accuracy trade-off. Furthermore, combining the delay-penalized transducer enables the CTC model to achieve better performance and lower latency. Our work is open-sourced and publicly available https://github.com/k2-fsa/k2., Comment: Accepted in INTERSPEECH 2023
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- 2023
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18. Hollow Pt Nanocage@Mesoporous SiO2 Nanoreactors as a Nanozyme for Colorimetric Immunoassays of Viral Diagnosis
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Lin Long, Mingji Zong, Yunqing Xie, Qing Chai, Jianbo Liu, and Xiaochun Wu
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General Materials Science - Published
- 2021
19. Crystallographic Understanding of Photoelectric Properties for C60 Derivatives Applicable as Electron Transporting Materials in Perovskite Solar Cells
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Shu-Hui Li, Han-Rui Tian, Su-Yuan Xie, Lan-Sun Zheng, Zhou Xing, Piao-Yang Xu, Fang-Fang Xie, Da-Qin Yun, Yang-Rong Yao, Bin-Wen Chen, Lin-Long Deng, and Ming-Wei An
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Electron mobility ,Materials science ,Fullerene ,Passivation ,business.industry ,Photovoltaic system ,chemistry.chemical_element ,General Chemistry ,Photoelectric effect ,chemistry ,Cluster (physics) ,Optoelectronics ,business ,Carbon ,Perovskite (structure) - Abstract
Hundreds of C60 derivatives stand out as electrontransporting materials(ETMs), for example, in perovskite solar cells(PSCs), due to their properties on electron extraction or defect passivation. However, it still lacks of guidelines to update C60-based ETMs with excellent photoelectric properties. In this work, crystallographic data of eight C60-based ETMs, including pristine C60 and the well-known PCBM as well as six newly synthesized fullerenes, are analyzed to establish the connections between derivatized structures and photoelectric properties for the typical carbon cluster of C60. In terms of packing centroid-centroid distance between neighboring carbon cages, the crystallographic data are useful for probing photoelectric properties, such as electrochemical properties, electron mobility and photovoltaic performances, and therefore facilitate to design novel C60-based ETMs for PSCs with high performances.
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- 2021
20. Research on Regional Traffic Speed Prediction Based on Capsule Network and Attention Mechanism
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Cao Jie, Su Guang, Zhang Hong, Chen Lin-Long, and Zhao Tian-Xin
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- 2022
21. N(14)-substituted evodiamine derivatives as dual topoisomerase 1/tubulin-Inhibiting anti-gastrointestinal tumor agents
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Jiedan Deng, Lin Long, Xue Peng, Weifan Jiang, Ying Peng, Xi Zhang, Yuting Zhao, Ying Tian, Zhen Wang, and Linsheng Zhuo
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Pharmacology ,Organic Chemistry ,Drug Discovery ,General Medicine - Published
- 2023
22. Promotion of rs3746804 (p. L267P) polymorphism to intracellular SLC52A3a trafficking and riboflavin transportation in esophageal cancer cells
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Zhijie Chang, Wei Wang, Li-Dong Wang, Lin Long, Bin Li, Feng Pan, Li-Yan Xu, Xiao-Xiao Pang, En-Min Li, Ying-Hua Xie, Fa-Min Zeng, Lian-Di Liao, Xiu-Hui Zhan, and Xiu-E Xu
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Gene isoform ,medicine.diagnostic_test ,Chemistry ,Cell growth ,Organic Chemistry ,Clinical Biochemistry ,Cell ,Fluorescence recovery after photobleaching ,Riboflavin ,Immunofluorescence ,Biochemistry ,Molecular biology ,Green fluorescent protein ,medicine.anatomical_structure ,medicine ,Intracellular - Abstract
Riboflavin is an essential micronutrient for normal cellular growth and function. Lack of dietary riboflavin is associated with an increased risk for esophageal squamous cell carcinoma (ESCC). Previous studies have identified that the human riboflavin transporter SLC52A3a isoform (encoded by SLC52A3) plays a prominent role in esophageal cancer cell riboflavin transportation. Furthermore, SLC52A3 gene single nucleotide polymorphisms rs3746804 (T>C, L267P) and rs3746803 (C >T, T278M) are associated with ESCC risk. However, whether SLC52A3a (p.L267P) and (p.T278M) act in riboflavin transportation in esophageal cancer cell remains inconclusive. Here, we constructed the full-length SLC52A3a protein fused to green fluorescent protein (GFP-SLC52A3a-WT and mutants L267P, T278M, and L267P/T278M). It was confirmed by immunofluorescence-based confocal microscopy that SLC52A3a-WT, L267P, T278M, and L267P/T278M expressed in cell membrane, as well as in a variety of intracellular punctate structures. The live cell confocal imaging showed that SLC52A3a-L267P and L267P/T278M increased the intracellular trafficking of SLC52A3a in ESCC cells. Fluorescence recovery after photobleaching of GFP-tagged SLC52A3a meant that intracellular trafficking of SLC52A3a-L267P and L267P/T278M was rapid dynamics process, leading to its stronger ability to transport riboflavin. Taken together, the above results indicated that the rs3746804 (p.L267P) polymorphism promoted intracellular trafficking of SLC52A3a and riboflavin transportation in ESCC cells.
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- 2021
23. Recent advance on pleiotropic cholinesterase inhibitors bearing amyloid modulation efficacy
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Honghua Zhang, Yan Peng, Linsheng Zhuo, Yuying Wang, Guo Zeng, Shuzhi Wang, Lin Long, Xuelin Li, and Zhen Wang
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Pharmacology ,Amyloid beta-Peptides ,Alzheimer Disease ,Organic Chemistry ,Drug Discovery ,Cholinesterases ,Humans ,General Medicine ,Amyloidosis ,Cholinesterase Inhibitors ,Acetylcholine - Abstract
Due to the hugely important roles of neurotransmitter acetylcholine (ACh) and amyloid-β (Aβ) in the pathogenesis of Alzheimer's disease (AD), the development of multi-target directed ligands (MTDLs) focused on cholinesterase (ChE) and Aβ becomes one of the most attractive strategies for combating AD. To date, numerous preclinical studies toward multifunctional conjugates bearing ChE inhibition and anti-Aβ aggregation have been reported. Noteworthily, most of the reported multifunctional cholinesterase inhibitors are carbamate-based compounds due to the initial properties of carbamate moiety. However, because their easy hydrolysis in vivo and the instability of the compound-enzyme conjugate, the mechanism of action of these compounds is rare. Thus, non-carbamate compounds are of great need for developing novel cholinesterase inhibitors. Besides, given that Aβ accumulation begins to occur 10-15 years before AD onset, modulating Aβ is ineffective only in inhibiting its aggregation but not eliminate the already accumulated Aβ if treatment is started when the patient has been diagnosed as AD. Considering the limitation of current Aβ accumulation modulators in ameliorating cognitive deficits and ineffectiveness of ChE inhibitors in blocking disease progression, the development of a practically valuable strategy with multiple pharmaceutical properties including ChE inhibition and Aβ modulation for treating AD is indispensable. In this review, we focus on summarizing the scaffold characteristics of reported non-carbamate cholinesterase inhibitors with Aβ modulation since 2020, and understanding the ingenious multifunctional drug design ideas to accelerate the pace of obtaining more efficient anti-AD drugs in the future.
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- 2022
24. Pruned RNN-T for fast, memory-efficient ASR training
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Kuang, Fangjun, Guo, Liyong, Kang, Wei, Lin, Long, Luo, Mingshuang, Yao, Zengwei, and Povey, Daniel
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FOS: Computer and information sciences ,Computer Science - Machine Learning ,Artificial Intelligence (cs.AI) ,Audio and Speech Processing (eess.AS) ,Computer Science - Artificial Intelligence ,FOS: Electrical engineering, electronic engineering, information engineering ,Machine Learning (cs.LG) ,Electrical Engineering and Systems Science - Audio and Speech Processing - Abstract
The RNN-Transducer (RNN-T) framework for speech recognition has been growing in popularity, particularly for deployed real-time ASR systems, because it combines high accuracy with naturally streaming recognition. One of the drawbacks of RNN-T is that its loss function is relatively slow to compute, and can use a lot of memory. Excessive GPU memory usage can make it impractical to use RNN-T loss in cases where the vocabulary size is large: for example, for Chinese character-based ASR. We introduce a method for faster and more memory-efficient RNN-T loss computation. We first obtain pruning bounds for the RNN-T recursion using a simple joiner network that is linear in the encoder and decoder embeddings; we can evaluate this without using much memory. We then use those pruning bounds to evaluate the full, non-linear joiner network.
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- 2022
25. Lawesson's Reagent Promoted Deoxygenation of Anhydrides for the Syntheses of 3‐Substituted and 3,4‐Disubstituted Thiophenes
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Gaofeng Yin, Tao Shi, Xiaodong Wang, Xuelin Li, Lin Long, and Zhen Wang
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Organic Chemistry - Published
- 2022
26. [Ecosystem structure and function of Sanmen Bay based on Ecopath model.]
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Ye-Fu, Kong, Cheng-Jie, Yin, Lin-Long, Wang, Yang, Liu, Li, Lin, and Bin, Kang
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China ,Food Chain ,Bays ,Models, Theoretical ,Ecosystem - Abstract
Ecosystem structure determines material circulation, energy flow, and system function. Based on field investigation data in the Sanmen Bay, East China Sea from 2017 to 2018, ecological channel model was constructed by Ecopath, describing energy flow routes and functional characteristics of the Sanmen Bay ecosystem. Results showed that grazing food chain was the main energy circulation channel, and the trophic level of each functional group ranged from 1 to 3.80. Energy flow of the system was mainly concentrated in the first five levels, with an average energy conversion efficiency of 13.0%. Energy conversion efficiency was 12.8% and 14.5% from primary producers and debris, respectively. Connectance index (CI) and system omnivory index (SOI) were 0.40 and 0.24 respectively. Finn's cycling index (FIC) was 0.40, and Finn's mean path length (MPL) was 2.06. The ratio of total primary productivity to total respiration was 13.59. In conclusion, Sanmen Bay ecosystem was immature in material circulation and energy flow. This work is helpful to understand the structural and functional traits of coastal ecosystems in China.生态系统的结构决定生态系统的物质循环、能量流动和系统功能。本研究采用Ecopath模型,根据2017—2018年中国东海三门湾海洋生态实地调查数据,构建了三门湾生态系统的生态通道模型,描述了三门湾生态系统的能流结构,分析了其功能特征。结果显示: 三门湾生态系统营养级范围在1~3.80,能流渠道主要表现为牧食食物链,系统能流结构主要集中在前5个等级,系统平均能量传递效率为13.0%,系统初级生产者的能量传递效率为12.8%,系统碎屑的能量转换效率为14.5%。系统连接指数与系统杂食性指数分别为0.40和0.24,Finn循环指数为0.40,系统的Finn平均路径长度为2.06,总初级生产量与总呼吸量之比为13.59,表明当前三门湾生态系统处于不成熟阶段。本研究有助于理解中国近海港湾生态系统的结构特征和功能特点。.
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- 2022
27. Value-added Catalog of M-giant Stars in LAMOST DR9
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Jing Li, Lin Long, Jing Zhong, Lin Tang, Bo Zhang, Songmei Qin, Yirong Chen, Zhengzhou Yan, Li Chen, Xiang-Xiang Xue, Jinliang Hou, and Jian-Rong Shi
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Astrophysics - Solar and Stellar Astrophysics ,Space and Planetary Science ,Astrophysics of Galaxies (astro-ph.GA) ,FOS: Physical sciences ,Astronomy and Astrophysics ,Astrophysics - Astrophysics of Galaxies ,Solar and Stellar Astrophysics (astro-ph.SR) - Abstract
In this work, we update the catalog of M-giant stars from the low-resolution spectra of the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) Data Release 9. There are 58,076 M giants identified from the classification pipeline with seven temperature subtypes from M0 to M6. The 2471 misclassified non-M-giant stars are white dwarf binaries, early types, and M dwarfs. And the contamination rate is 4.2$\%$ in the M-giants sample. A total of 372 carbon stars were identified by CaH spectral indices, and were further confirmed by the LAMOST spectra. We update the correlation between the $(W1-W2)_0$ color and [M/H] from APOGEE DR17. We calculate the radial velocities of all M giants by applying cross-correlation to the spectra between 8000 and 8950 \AA with synthetic spectra from ATLAS9. Taking star distances less than 4 kpc from Gaia EDR3 as the standard, we refitted the photometric distance relation of M giants. And based on our M-giant stars, we select a group of Sagittarius stream members, whose sky and 3D velocity distributions are well consistent with K-giant Saggitarius stream members found in Yang et al. With our M giants, we find that the disk is asymmetric out to R = 25 kpc, which is 5 kpc further out than detected using K giants., Comment: 23 pages, 10 figures. arXiv admin note: text overlap with arXiv:1908.01128
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- 2023
28. Atmospheric Parameters and Kinematic Information for the M Giant Stars from LAMOST DR9
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Dan Qiu, Hao Tian, Jing Li, Chao Liu, Lin Long, Jian-Rong Shi, Ming Yang, and Bo Zhang
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Astrophysics - Solar and Stellar Astrophysics ,Space and Planetary Science ,Astrophysics of Galaxies (astro-ph.GA) ,FOS: Physical sciences ,Astronomy and Astrophysics ,Astrophysics - Astrophysics of Galaxies ,Solar and Stellar Astrophysics (astro-ph.SR) - Abstract
A catalog of more than 43,000 M giant stars has been selected by Li et al. from the ninth data release of LAMOST. Using the data-driven method SLAM, we obtain the stellar parameters (Teff, logg, [M/H], [$\alpha$/M]) for all the M giant stars with uncertainties of 57 K, 0.25 dex, 0.16 dex and 0.06 dex at SNR > 100, respectively. With those stellar parameters, we constrain the absolute magnitude in K-band, which brings distance with relative uncertainties around 25% statistically. Radial velocities are also calculated by applying cross correlation on the spectra between 8000 A $\AA$ and 8950 A $\AA$ with synthetic spectra from ATLAS9, which covers the Ca II triplet. Comparison between our radial velocities and those from APOGEE DR17 and Gaia DR3 shows that our radial velocities have a system offset and dispersion around 1 and 4.6 km s$^{-1}$, respectively. With the distances and radial velocities combining with the astrometric data from Gaia DR3, we calculate the full 6D position and velocity information, which are able to be used for further chemo-dynamic studies on the disk and substructures in the halo, especially the Sagittarius Stream., Comment: 21 pages, 11 figures, accepted by RAA
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- 2023
29. Investigation of an Empirical Creep Constitutive Model of Changsha Red Loam
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Lin Long, Zhida Li, and Yunyu Li
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Architecture ,consolidation test ,creep model ,constitutive relation ,nonlinearity ,deformation prediction ,Building and Construction ,Civil and Structural Engineering - Abstract
To describe and predict the creep deformation of Changsha red loam (including sandy soil and silty clay) in China, an empirical creep model was proposed based on a laboratory consolidation compression test. Two classical soil layers were sampled from the deep foundation pit site and fourteen samples were designed for tests under different loading conditions. Results show that the deformation process illustrates deceleration and stabilization creep with its vertical load lower than 500 kPa, while it may illustrate acceleration with its vertical load higher than 500 kPa. By analyzing the experimental results, the empirical creep model of the red loam was established. Adopting the model to predict the deformation of red loam shows the prediction curves match the actual situation, proving that the model plays a significant role in predicting the creep deformation of Changsha red loam.
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- 2023
30. Safety and Immunogenicity of Enterovirus 71 Vaccine (Vero Cell) Administered Simultaneously with Trivalent Split-Virion Influenza Vaccine in Infants Aged 6–7 Months: A Phase 4, Randomized, Controlled Trial
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Yanhui Xiao, Xue Guo, Min Zhang, Yaping Chen, Yanyang Zhang, Xiaoqing Yu, Linyun Luo, Haiping Chen, Weichai Xu, Haibo Liu, Lixia Wu, Renwu Hou, Yong Ma, Lin Long, Jiewei Ruan, Wei Chen, and Xiaoming Yang
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Pharmacology ,Infectious Diseases ,Drug Discovery ,Immunology ,Pharmacology (medical) - Abstract
Objective: To assess the immunogenicity and safety of the enterovirus 71 vaccine (Vero cell) (EV71 vaccine) and trivalent split-virion influenza vaccine (IIV3). Methods: Healthy infants aged 6–7 months were recruited from Zhejiang Province, Henan Province, and Guizhou Province and randomly assigned to the simultaneous vaccination group, EV71 group, and IIV3 group at a ratio of 1:1:1. Then, 3 mL blood samples were collected before vaccination and 28 days after the second dose of vaccine. Cytopathic effect inhibition assay was used to detect EV71 neutralization antibody, and cytopathic effect inhibition assay was used to detect influenza virus antibody. Results: A total of 378 infants were enrolled and received the first dose of vaccine and were included in the safety analysis, and 350 infants were involved in the immunogenicity analysis. The adverse events rates were 31.75%, 28.57%, and 34.13% in the simultaneous vaccination group, EV71 group, and IIV3 group (p > 0.05), respectively. No vaccine-related serious adverse events were reported. After two doses of EV71 vaccine, the seroconversion rates of EV71 neutralizing antibody were 98.26% and 97.37% in the simultaneous vaccination group and the EV71 group, respectively. After two doses of IIV3, the simultaneous vaccination group and the IIV3 group, respectively, had seroconversion rates of 80.00% and 86.78% for H1N1 antibody, 99.13% and 98.35% for H3N2 antibody, and 76.52% and 80.99% for B antibody. There was no statistically significant difference in the seroconversion rates of influenza virus antibodies between groups (p > 0.05). Conclusions: The coadministration of EV71 vaccine and IIV3 has good safety and immunogenicity in infants aged 6–7 months.
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- 2023
31. Friend or Foe: Regulation, Downstream Effectors of RRAD in Cancer
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Zhangyue Sun, Yongkang Li, Xiaolu Tan, Wanyi Liu, Xinglin He, Deyuan Pan, Enmin Li, Liyan Xu, and Lin Long
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Molecular Biology ,Biochemistry - Abstract
Ras-related associated with diabetes (RRAD), a member of the Ras-related GTPase superfamily, is primarily a cytosolic protein that actives in the plasma membrane. RRAD is highly expressed in type 2 diabetes patients and as a biomarker of congestive heart failure. Mounting evidence showed that RRAD is important for the progression and metastasis of tumor cells, which play opposite roles as an oncogene or tumor suppressor gene depending on cancer and cell type. These findings are of great significance, especially given that relevant molecular mechanisms are being discovered. Being regulated in various pathways, RRAD plays wide spectrum cellular activity including tumor cell division, motility, apoptosis, and energy metabolism by modulating tumor-related gene expression and interacting with multiple downstream effectors. Additionally, RRAD in senescence may contribute to its role in cancer. Despite the twofold characters of RRAD, targeted therapies are becoming a potential therapeutic strategy to combat cancers. This review will discuss the dual identity of RRAD in specific cancer type, provides an overview of the regulation and downstream effectors of RRAD to offer valuable insights for readers, explore the intracellular role of RRAD in cancer, and give a reference for future mechanistic studies.
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- 2023
32. Discovery of carbamate-based salicylic acid derivatives as novel cholinesterase inhibitor
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Yuying Wang, Lin Long, Quanwei Yu, Honghua Zhang, Xuelin Li, Linsheng Zhuo, Shuzhi Wang, and Zhen Wang
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Inorganic Chemistry ,Organic Chemistry ,Spectroscopy ,Analytical Chemistry - Published
- 2023
33. Experimental and numerical study on the fragmentation mechanism of a single calcareous sand particle under normal compression
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Kai Wu, Rui-qi Guo, Zhi-lin Long, Du-min Kuang, and Tao Zhao
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Materials science ,0211 other engineering and technologies ,Fragmentation (computing) ,Geology ,02 engineering and technology ,010502 geochemistry & geophysics ,Geotechnical Engineering and Engineering Geology ,Compression (physics) ,01 natural sciences ,Discrete element method ,Mechanism (engineering) ,Breakage ,Particle ,Composite material ,Calcareous ,021101 geological & geomatics engineering ,0105 earth and related environmental sciences ,Weibull distribution - Abstract
The rate-dependent mechanical properties of a specific geomaterial play a crucial role in engineering design and application. However, there have been very few studies involving rate-dependent mechanical properties of calcareous sand particles. This present investigation aims to study the rate-dependent breakage behavior of calcareous sand particles experimentally and numerically. Experimental tests were conducted under various loading rates. Moreover, the discrete element method was utilized in particle crushing tests to assess the breakage sub-processes. The experimental results reveal that the particle crushing strengths conform to the Weibull distribution. As the loading rates increase, the fragmentation mode changes from primary splitting and successive breaking to severe disintegration, corresponding to the three types of axial force-displacement curves, namely, the quasi-hardening, the slight quasi-softening, and the obvious quasi-softening. The simulation results show that the fractures initiate in the vicinity of contact point between the particle and loading walls, eventually penetrating through the particle along the vertical section of the sample. A higher loading rate may lead to a greater extent of particle breakage. The findings presented in this study may advance the understanding of the rate-dependent mechanical properties of calcareous sands.
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- 2021
34. DNAJB4 identified as a potential breast cancer marker: evidence from bioinformatics analysis and basic experiments
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Zi-Quan Yang, Xun Gong, Fang Fang, Fan-Lun Meng, Rongyang Zou, Lin-Long Mo, Lingmi Hou, and Jiayou Liu
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0301 basic medicine ,Tumor suppressor gene ,Bioinformatics analysis ,business.industry ,medicine.disease ,Pathogenesis ,03 medical and health sciences ,Clinical prognosis ,030104 developmental biology ,0302 clinical medicine ,Breast cancer ,Cell culture ,030220 oncology & carcinogenesis ,Cancer research ,medicine ,Original Article ,Surgery ,DNA microarray ,business ,Gene - Abstract
Background Breast cancer (BC) is the leading cause of tumor-related death in women worldwide, but its pathogenesis is not clear. The efficient screening of new therapeutic targets for BC through bioinformatics and biological experimental techniques has become a hot topic in BC research. Methods The bioinformatics method was used to analyze the gene chips and obtain the hub genes, playing an important role in the development of BC. The biological processes (BP) involved in the hub genes were analyzed by Bingo, and the impact of each hub gene on disease-free survival (DFS) and overall survival (OS) in BC patients was evaluated in the Kaplan-Meier Plotter database. The expression of DNAJB4, the hub gene with the greatest degree and having an effect on the prognosis of BC patients, was detected in BC cell lines and clinicopathological specimens. And DNAJB4 was selected for further biological experiments and clinical prognosis verification. Results Ten hub genes including DNAJB4, the greatest degree genes, were found by bioinformatics analysis of BC gene chips. DNAJB4 expressions in both BC cell lines and clinicopathological specimens were detected and the results showed that DNAJB4 was significantly down-regulated in BC cell lines and tissues. After interfering with the expression of DNAJB4, it was found that the invasion and migration ability of MDA-MB-231 cell line was significantly enhanced in vitro. The clinical survival data of BC patients showed that patients with high DNAJB4 expression had longer DFS. Conclusions DNAJB4 may be a tumor suppressor gene in BC as it could regulate invasion and migration of BC cells and its expression level is related to the prognosis of BC patients. Nevertheless, further researches are still necessary to verify its role in BC so as to provide evidences for clinical guidance regarding diagnosis and treatment.
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- 2020
35. Etching Characteristic of Graphite and Metal Substrates by Hydrocarbon Plasma in Closed Cavity
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Weixing Zhou, Lin Long, Wen Fu, Ling Yang, and Xi-Ming Zhu
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010302 applied physics ,Glow discharge ,Plasma etching ,Materials science ,General Chemical Engineering ,Analytical chemistry ,General Chemistry ,Plasma ,Coke ,Condensed Matter Physics ,01 natural sciences ,Cathode ,010305 fluids & plasmas ,Surfaces, Coatings and Films ,law.invention ,Etching (microfabrication) ,law ,0103 physical sciences ,Electrode ,Graphite - Abstract
Plasma can be used to effectively remove coke from a metal surface. The plasma etching conditions of coke and emission spectrum characteristics on the metal surface in a complex structure can be determined in real-time using the flexible optical fiber of an emission spectrometer. In this study, the glow discharge hydrogen plasma etching characteristics of a graphite sheet covering Cu and Fe electrodes were investigated. Methane plasma and a bare Cu electrode without graphite were used to conduct experiments for comparison. The cathode was heavily etched owing to the chemical and physical reactions of abundant H and other active species. Many hydrocarbon particle shells with fuzzy boundaries of multilayer graphite were observed on the ground electrode as black dots with diameters less than 1 micron. The cracking reaction of etching process in the case of hydrogen plasma with graphite electrodes plays a leading role, but polymerization reaction is dominant for the methane plasma with bare Cu electrodes. Significant excitation peaks of the emission spectrum are observed in regions centered at 388 and 776 nm for the etching of carbon-rich electrodes in hydrogen-rich plasma. Different hydrocarbon and metal substrate bonds can exist even under strong etching conditions.
- Published
- 2020
36. Synthesis and Fluorescent Properties of Multi-Functionalized C70 Derivatives of C70(OCH3)10[C(COOEt)2] and C70(OCH3)10[C(COOEt)2]2
- Author
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Ke Luan, Lu Wang, Fang-Fang Xie, Bin-Wen Chen, Zuo-Chang Chen, Lin-Long Deng, Su-Yuan Xie, and Lan-Sun Zheng
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General Chemical Engineering ,General Materials Science ,fullerene ,multi-functionalization ,fluorescence - Abstract
Due to the partially reduced π-conjugation of the fullerene cage, multi-functionalized fullerene derivatives exhibit remarkable fluorescent properties compared to pristine fullerenes, which have high potential for application in organic light-emitting diodes (OLEDs). In this study two multi-functionalized C70 derivatives, C70(OCH3)10[C(COOEt)2] and C70(OCH3)10[C(COOEt)2]2, with excellent fluorescence properties, were designed and synthesized. Compared with C70(OCH3)10 containing a single kind of functional group, both the C70(OCH3)10[C(COOEt)2] and C70(OCH3)10[C(COOEt)2]2 exhibited enhanced fluorescence properties with blue fluorescence emission. The fluorescence quantum yields of the C70(OCH3)10[C(COOEt)2] and C70(OCH3)10[C(COOEt)2]2 were 1.94% and 2.30%, respectively, which were about ten times higher than that of C70(OCH3)10. The theoretical calculations revealed that the multi-functionalization of the C70 increased the S1–T1 energy gap, reducing the intersystem crossing efficiency, resulting in the higher fluorescence quantum yield of the C70 derivatives. The results indicate that multi-functionalization is a viable strategy to improve the fluorescence of fullerene derivatives.
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- 2022
- Full Text
- View/download PDF
37. [Brief analysis on main indications and compatibility rules of Ciliao (BL 32) based on data mining]
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Zi-Lin, Long and Zhi-Shun, Liu
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Male ,Dysmenorrhea ,Acupuncture Therapy ,Data Mining ,Humans ,Female ,Meridians ,Acupuncture Points - Abstract
Based on the data mining technology, the main indications and compatibility rules of Ciliao (BL 32) were analyzed and summarized. The relevant literature was retrieved from the databases of CNKI, Wanfang, VIP, Cochrane Library, SinoMed, Scopus, Web of Science, EMbase and PubMed, from the date of establishment to September 8, 2021. Using the software of SPSS Modeler 18.0 and Gephi0.9.2, the included literature was analyzed by data mining. A total of 218 articles were included, of them, there were 36 articles using single-acupoint prescriptions and 182 articles using compound prescriptions. Acupuncture was the most frequently used intervention of Ciliao (BL 32), followed by electroacupuncture. Dysmenorrhea and labor analgesia were the dominant indications of single-acupoint prescriptions of Ciliao (BL 32), and 9 diseases i.e. dysmenorrhea, urinary incontinence, urinary retention, chronic pelvic inflammatory disease, chronic prostatitis and lumbar disc herniation were the dominant indications of compound prescriptions. The main indications of Ciliao (BL 32) involved diseases of reproductive system, urinary system and waist. There were 92 acupoints in compatibility with Ciliao (BL 32), which were main belonged to the bladder meridian, the conception vessel and the spleen meridian, the most frequently used acupoints were Sanyinjiao (SP 6), Guanyuan (CV 4), Shenshu (BL 23) and Zhongji (CV 3).运用数据挖掘技术分析总结次髎穴的主治病症及腧穴配伍规律。检索自建库至2021年9月8日中国期刊全文数据库(CNKI)、万方数据知识服务平台(Wangfang)、维普资讯中文期刊服务平台(VIP)、Cochrane Library、中国生物医学文献数据库(SinoMed)、Scopus、Web of Science、EMbase及PubMed有关文献资料,运用SPSS Modeler 18.0和Gephi0.9.2软件对纳入文献进行数据挖掘分析。共纳入随机对照试验文献218篇,其中次髎单穴应用文献36篇,配伍他穴应用文献182篇。次髎穴的干预方式以针刺最多,电针次之。单穴主治的优势病症为痛经、分娩镇痛;配伍腧穴主治的优势病症为痛经、尿失禁、尿潴留、慢性盆腔炎、慢性前列腺炎、腰椎间盘突出症等;主治生殖系统疾病、泌尿系统疾病及腰部疾患。次髎配伍腧穴92个,多配伍膀胱经、任脉和脾经的腧穴;其高频配穴为三阴交、关元、肾俞、中极。.
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- 2022
38. Synthesis and Fluorescent Properties of Multi-Functionalized C
- Author
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Ke, Luan, Lu, Wang, Fang-Fang, Xie, Bin-Wen, Chen, Zuo-Chang, Chen, Lin-Long, Deng, Su-Yuan, Xie, and Lan-Sun, Zheng
- Abstract
Due to the partially reduced π-conjugation of the fullerene cage, multi-functionalized fullerene derivatives exhibit remarkable fluorescent properties compared to pristine fullerenes, which have high potential for application in organic light-emitting diodes (OLEDs). In this study two multi-functionalized C
- Published
- 2022
39. The study on object recognition technology based on multispectral polarization
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Dailin Li, Huaiwei Zhang, Lin Long, Xinfeng Yu, Xiaofeng Zhang, and Bowen Sun
- Published
- 2022
40. C20orf24 promotes colorectal cancer progression by recruiting Rin1 to activate Rab5-mediated mitogen-activated protein kinase/extracellular signal-regulated kinase signalling
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Yang Wang, Jing Zhang, Can‐Can Zheng, Zi‐Jia Huang, Wei‐Xia Zhang, Yun‐Lin Long, Gui‐Bin Gao, Yue Sun, Wen Wen Xu, Bin Li, and Qing‐Yu He
- Subjects
Membrane Glycoproteins ,Disease Progression ,Intracellular Signaling Peptides and Proteins ,Molecular Medicine ,Medicine (miscellaneous) ,Humans ,Colorectal Neoplasms ,Extracellular Signal-Regulated MAP Kinases ,Signal Transduction ,rab5 GTP-Binding Proteins - Published
- 2022
41. The Application of Two-Stage Operation for High-Risk Patients with Oesophageal Cancer Following Gastrectomy
- Author
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Gao-li Liu, Xin Wang, Hai-feng Hu, Zhi-hao Nie, Wei Ming, Xing-lin Long, Wen-han Zhang, Xing-hua Zhang, Jie Huang, Wan-li Jiang, and Song-ping Xie
- Subjects
Postoperative Complications ,Esophageal Neoplasms ,Gastrectomy ,Stomach Neoplasms ,Gastroenterology ,Humans ,Surgery ,Retrospective Studies - Abstract
Oesophageal replacement by colonic interposition remains a major challenge due to its complexity and high incidence of complications; here we applied the two-stage operation strategy to oesophageal replacement by colonic interposition in high-risk oesophageal cancer patients following gastrectomy.We performed a retrospective analysis on the data of patients with a history of distal gastrectomy who underwent one-stage and two-stage oesophageal replacement by colonic interposition from February 2012 to February 2020, and explored the relationship between the staging strategy and postoperative outcomes.The clinical data of 93 patients were collected and analysed. There were no significant differences in the patients' characteristics between the two groups (all p 0.05), except for comorbidities and Charlson Comorbidity Index (all p 0.05). The Clavien-Dindo score between the two groups was also not significantly different (p 0.05). The logistic regression models revealed that patients who had received preoperative therapy had a higher Clavien-Dindo score (p 0.05), but the stage strategy did not (p 0.05).The two-stage operation is feasible in high-risk patients who need to undergo colonic interposition for oesophageal replacement. At the same time, it lowers the technical threshold of colonic interposition for oesophageal replacement, increasing this surgical technique's acceptability.
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- 2022
42. Cross-linkable fullerene interfacial contacts for enhancing humidity stability of inverted perovskite solar cells
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Da-Qin Yun, Bin-Wen Chen, Lin-Long Deng, Su-Yuan Xie, Rong-Bin Huang, Zhou Xing, Xu Wang, Lan-Sun Zheng, Shan-Yu Zheng, Bao-Shan Wu, Fang-Fang Xie, and Ming-Wei An
- Subjects
Fullerene derivatives ,Fullerene ,Materials science ,Passivation ,Water resistance ,020502 materials ,Energy conversion efficiency ,Metals and Alloys ,Humidity ,02 engineering and technology ,Condensed Matter Physics ,Planar ,0205 materials engineering ,Chemical engineering ,Metallic materials ,Materials Chemistry ,Physical and Theoretical Chemistry - Abstract
In situ cross-linking encapsulation has been demonstrated to be an efficient strategy for enhancing the humidity stability of perovskite solar cells (PSCs). In this study, a novel cross-linkable fullerene derivative, namely 1-(p-benzoate-(p-methylvinylbenzene)-indolino[2,3][60] fullerene (FPPS), was readily synthesized from commercially available building blocks in two steps. This FPPS was employed as an interfacial modifier on perovskite surfaces in inverted planar p–i–n PSCs. Owing to the fast interfacial charge extraction and efficient trap passivation, PSCs based on the cross-linked FPPS (C-FPPS) exhibited excellent performance. The PSCs had a top-performing power conversion efficiency (PCE) of 17.82% with negligible hysteresis, compared to the control devices without C-PFFS (16.99%). Moreover, the strong water resistance of the C-FPPS interfacial layer distinctly enhances the ambient stability of PSC devices, exhibiting a t80 (the time required to reach 80% of the initial PCE) of 300 h under high-humidity conditions. This significantly surpasses the control devices, whose t80 was only 130 h. These results demonstrate that cross-linkable fullerene derivatives can be promising interfacial materials for designing high-efficiency, hysteresis-free, air-stable PSCs.
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- 2020
43. Numerical Investigation of the Cushion and Size Effects During Single-Particle Crushing via DEM
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Du-min Kuang, Wang Jie, Piao-yi Yu, Zhi-lin Long, Rui-qi Guo, and Zhou Xutong
- Subjects
Materials science ,Mechanical Engineering ,Coordination number ,Computational Mechanics ,Mode (statistics) ,02 engineering and technology ,Mechanics ,021001 nanoscience & nanotechnology ,Discrete element method ,020303 mechanical engineering & transports ,0203 mechanical engineering ,Breakage ,Mechanics of Materials ,Ultimate tensile strength ,Cushion ,Particle ,Particle size ,0210 nano-technology - Abstract
This paper uses the discrete element method to model the size and cushion effects during single-particle crushing tests. We propose simplified numerical modeling to examine the effects of particle size and coordination number on particle breakage behavior. We validate the proposed modeling by comparing the numerical results with the experimental data reported in the literature, in terms of the variability of particle tensile strength and axial force–displacement responses. Based on the numerical results, it is clear that a larger particle size entails a higher tensile strength with a larger discreteness. In addition, the characteristic tensile strength increases linearly with an increasing coordination number. Moreover, smaller particles are more susceptible to the cushion effect than larger particles. The numerical results also indicate that an increasing coordination number induces a more ductile mode of failure. Based on these results, we propose an empirical equation for calculating tensile strength, incorporating both the cushion effect and the size effect.
- Published
- 2020
44. Multi-walled carbon nanotube/polyurethane electrothermal films
- Author
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Lei Wang, Meizhen Qu, Xiao-Lin Long, Ying Shu, Jinjin Jiang, Wan-Peng Li, Chang-Liang Zhou, Huan Zhang, Li Xu, and Wenjing Liu
- Subjects
Materials science ,business.industry ,Organic Chemistry ,02 engineering and technology ,Carbon nanotube ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,Atomic and Molecular Physics, and Optics ,0104 chemical sciences ,Catalysis ,law.invention ,chemistry.chemical_compound ,Chemical engineering ,chemistry ,Natural gas ,law ,General Materials Science ,Physical and Theoretical Chemistry ,0210 nano-technology ,business ,Ball mill ,Pyrolysis ,Polyurethane - Abstract
Multi-walled carbon nanotubes (MWNTs) were prepared by pyrolysis of cheap natural gas over Ni/La2O3-MgO catalyst at 740 °C. The purified MWNTs were easily dispersed by ball milling method and aqueo...
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- 2020
45. Dietary riboflavin deficiency induces ariboflavinosis and esophageal epithelial atrophy in association with modification of gut microbiota in rats
- Author
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Feng Pan, Hong-Jun Luo, Xuan Wang, Lin Long, Ling-Li Zhang, Pei-Tong Zhuang, En-Min Li, Li-Yan Xu, and Ye Chen
- Subjects
0301 basic medicine ,medicine.medical_specialty ,Medicine (miscellaneous) ,030209 endocrinology & metabolism ,Riboflavin ,Gut flora ,03 medical and health sciences ,0302 clinical medicine ,Clostridium ,Internal medicine ,Medicine ,Esophagus ,030109 nutrition & dietetics ,Nutrition and Dietetics ,biology ,business.industry ,digestive, oral, and skin physiology ,food and beverages ,Metabolism ,biology.organism_classification ,Riboflavin deficiency ,medicine.anatomical_structure ,Endocrinology ,Epithelial atrophy ,Ariboflavinosis ,business - Abstract
Riboflavin deficiency causes ariboflavinosis, a common nutritional deficiency disease. The purpose of this study is to investigate the effects of riboflavin deficiency on the important internal organs and its potential mechanisms. Experiment 1, male F344 rats were randomly assigned to R6 (normal riboflavin, 6 mg/kg) and R0 (riboflavin-deficient, 0 mg/kg) groups. Experiment 2 rats were assigned to R6, R0.6 (0.6 mg/kg) and R0.06 (0.06 mg/kg) groups. Experiment 3 rats were assigned to R6 and R0 → R6 (riboflavin replenishment) groups. Bacterial communities were analyzed based on 16S rRNA gene sequencing. Riboflavin deficiency induced ariboflavinosis (R0.06 46.7%; R0 72%) and esophageal epithelial atrophy (R0.06 40%; R0 44%) in rats, while the R6 group did not display symptoms (P
- Published
- 2020
46. Observer-based robust exponential stabilization for linear systems with parameter uncertainties
- Author
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Jian Hu, Wei Zhang, Xuesheng Zhang, and Lin Long
- Subjects
Lyapunov stability ,0209 industrial biotechnology ,Class (set theory) ,Control and Optimization ,Observer (quantum physics) ,Mechanical Engineering ,Linear system ,02 engineering and technology ,01 natural sciences ,020901 industrial engineering & automation ,Exponential stabilization ,Quadratic equation ,Exponential stability ,Control and Systems Engineering ,Control theory ,Modeling and Simulation ,0103 physical sciences ,Electrical and Electronic Engineering ,010301 acoustics ,Civil and Structural Engineering ,Mathematics - Abstract
This paper is concerned with the robust observer-based control problem for a class of continuous-time linear systems with parameter uncertainties. A less conservative approach is provided to deal with the quadratic terms involving in the Lyapunov stability analysis for the estimation error dynamic system. Sufficient conditions that ensure the exponential stability of the closed-loop system are established and formulated in terms of linear matrix inequalities. The obtained results are less conservative than some existing ones in recent literature. Finally, two numerical examples are given to show the validity and superiority of the proposed observer-based robust controller.
- Published
- 2020
47. Preparation of high-yield multi-walled carbon nanotubes by catalytic decomposition of mixture of natural gas and propylene and their electrothermal properties
- Author
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Huan Zhang, Li Xu, Chang-Liang Zhou, Meizhen Qu, Jinjin Jiang, Wan-Peng Li, Xiao-Lin Long, Wenjing Liu, Ying Shu, and Lei Wang
- Subjects
Materials science ,business.industry ,Organic Chemistry ,02 engineering and technology ,Carbon nanotube ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,Atomic and Molecular Physics, and Optics ,0104 chemical sciences ,Catalysis ,law.invention ,Volumetric flow rate ,Chemical engineering ,law ,Natural gas ,Yield (chemistry) ,General Materials Science ,Physical and Theoretical Chemistry ,0210 nano-technology ,business ,Catalytic decomposition ,Pyrolysis - Abstract
Multi-walled carbon nanotubes (MWNTs) with high-yield were prepared by pyrolysis of mixture of natural gas (NG) and propylene (C3H6) over Fe-Ni/Al2O3-MgO catalyst. For C3H6/NG flow rate ratio rangi...
- Published
- 2020
48. Hybrid Fullerene-Based Electron Transport Layers Improving the Thermal Stability of Perovskite Solar Cells
- Author
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Zhou Xing, Bao-Shan Wu, Lan-Sun Zheng, Lin-Long Deng, Rong-Bin Huang, Yang-Rong Yao, Su-Yuan Xie, Da-Qin Yun, Shu-Hui Li, Meng-Fan Li, Han-Rui Tian, and Zuo-Chang Chen
- Subjects
Electron transport layer ,Fullerene ,Materials science ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,Electron transport chain ,0104 chemical sciences ,Chemical engineering ,General Materials Science ,Thermal stability ,0210 nano-technology ,Perovskite (structure) - Abstract
The structure-dependent thermal stability of fullerene electron transport layers (ETLs) and its impact on device stability have been underrated for years. Based on cocrystallographic understanding, herein, we develop a thermally stable ETL comprising a hybrid layer of [6,6]-phenyl-C
- Published
- 2020
49. Low-Temperature Aging Provides 22% Efficient Bromine-Free and Passivation Layer-Free Planar Perovskite Solar Cells
- Author
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Luyao Wang, Qinye Bao, Xin Wang, Shibing Leng, Tong Shan, Lin-Long Deng, Hongliang Zhong, Zheng‑Hong Lu, and Chun-Chao Chen
- Subjects
Materials science ,Bromine ,Aging growth ,Passivation ,Perovskite solar cells ,lcsh:T ,Nucleation ,Halide ,chemistry.chemical_element ,lcsh:Technology ,Article ,Bromine-free ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,Formamidinium ,chemistry ,Chemical engineering ,Phase (matter) ,Passivation layer ,Electrical and Electronic Engineering ,Layer (electronics) ,Perovskite (structure) ,Lead iodide - Abstract
Article Highlights By low-temperature aging, superior bromine-free FA1–xMAxPbI3 perovskite film is realized.By suppressing lead iodide on the surface of perovskite, no further passivation step or layer is needed. The efficiency of planar perovskite solar cells is improved to 22.41% with robust reproducibility. Electronic supplementary material The online version of this article (10.1007/s40820-020-00418-0) contains supplementary material, which is available to authorized users., Previous reports of formamidinium/methylamine (FAMA)-mixed halide perovskite solar cells have focused mainly on controlling the morphology of the perovskite film and its interface—for example, through the inclusion of bromine and surface passivation. In this paper, we describe a new processing pathway for the growth of a high-quality bromine-free FAMAPbI3 halide perovskites via the control of intermediate phase. Through low-temperature aging growth (LTAG) of a freshly deposited perovskite film, α-phase perovskites can be seeded in the intermediate phase and, at the same time, prevent beta-phase perovskite to nucleate. After postannealing, large grain-size perovskites with significantly reduced PbI2 presence on the surface can be obtained, thereby eliminating the need of additional surface passivation step. Our pristine LTAG-treated solar cells could provide PCEs of greater than 22% without elaborate use of bromine or an additional passivation layer. More importantly, when using this LTAG process, the growth of the pure alpha-phase FAMAPbI3 was highly reproducible. Electronic supplementary material The online version of this article (10.1007/s40820-020-00418-0) contains supplementary material, which is available to authorized users.
- Published
- 2020
50. Experimental and numerical investigation on size effect on crushing behaviors of single calcareous sand particles
- Author
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Rui-qi Guo, Du-min Kuang, Zhi-lin Long, and Piao-yi Yu
- Subjects
Materials science ,integumentary system ,010505 oceanography ,musculoskeletal, neural, and ocular physiology ,0211 other engineering and technologies ,Ocean Engineering ,02 engineering and technology ,Geotechnical Engineering and Engineering Geology ,Oceanography ,01 natural sciences ,Discrete element method ,body regions ,surgical procedures, operative ,nervous system ,Particle ,Composite material ,Calcareous ,021101 geological & geomatics engineering ,0105 earth and related environmental sciences - Abstract
Single particle crushing tests were conducted to investigate the size effect on the crushing behaviors of single calcareous sand particles experimentally and numerically. The particle crushing stre...
- Published
- 2020
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