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| 1 | Asphaltenes: Separations, structural analysis and applications显示文摘Asphaltenes, complex aromatic compounds from various carbonaceous sources, could be obtained by solvent dissolution, filtration and adsorption. It was difficult to clarify the molecular structures and chemical properties of asphaltene due to its structural similarity, composition complexity and source dependences. Many techniques, like Mass spectrometry, Chromatography, Nuclear magnetic resonance spectroscopy, Infrared spectroscopy, Roman spectroscopy, Fluorescence spectroscopy, X-ray diffraction analysis and Small-angle scattering techniques and so on, have revealed some valuable descriptions of asphaltenes chemical compositions and fundamental structures. Moreover, advanced Mass spectrometry,Atomic force microscopy and Scanning tunneling microscopy could provide more clear and essential molecular compounds and structures in asphaltenes. In addition, several asphaltenes models have succeeded to illustrate aggregation properties asphaltene. In this work, the progress on asphaltene separation, characterization and application was summarized, and the similarities and differences between coal-derived asphaltenes and petroleum asphaltenes were compared. Furthermore, the reactivity of asphaltenes has been discussed in the aspect of hydroprocessing, pyrolysis and gasification. Asphaltene was excellent carbon precursor for functional carbon material due to its high aromaticity and carbon yield;several porous carbon nanosheets from asphaltenes that would be prospective electrode materials after being graphitized were shown. Pitch-based carbon fiber derived from coal-derived asphaltenes displayed a tensile strength of 1.0 GPa and elastic modulus of 350 MPa, respectively. These powerful advances will provide asphaltenes promising developments. | Pingping Zuo Shijie Qu Wenzhong Shen | 2019 | Journal of Energy Chemistry2019，28，7： | 7 |
| 2 | Optimized Fault Detection Algorithm Aided by BDS Baseband Signal for Train Positioning显示文摘The satellite navigation integrity monitoring technology is closely related to the reliability of train positioning.It is of great significance to study satellite navigation Receiver autonomous int egrity mon辻o ring(RAIM)algorithm suitable for train positioning.Some existing conventional RAIM algorithms do not consider the influence of satellite navigation signal on algorithms performance.Aiming at the influence of sat ellite naviga tion signal on the propagation processes,such as shadow and multipa th effec ts,the fault detection algor辻hm based on BeiDou navigation satellite system(BDS)baseband signal is proposed.The innovation parameters contained in the satellite navigation baseband signal are combined into the covariance matrix to set up a new test statistics of RAIM.A new fault detection algorithm based on optimized BDS baseband signal is discussed.And combined with weighted least square method,the noise power balance factor is established to realize sat ellite fault det ection.Experimen tai resul ts show that the proposed algorithm can improve the monitoring performance of train satellite positioning integrity,and lay the foundation for meeting the railway industry's security requirements for positioning services. | WANG Ershen YANG Di WANG Chuanyun Huang Yufeng QU Pingping PANG Tao | 2020 | Chinese Journal of Electronics2020，29，1： | 2 |
| 3 | Two Supporting Factors Greatly Improve the Efficiency of Human iPSC Generation显示文摘 | Yang Zhao Xiaolei Yin Han Qin Fangfang Zhu Haisong Liu Weifeng Yang Qiang Zhang Chengang Xiang Pingping Hou Zhihua Song Yanxia Liu Jun Yong Pengbo Zhang Jun Cai Meng Liu Honggang Li Yanqin Li Xiuxia Qu Kai Cui Weiqi Zhang Tingting Xiang Yetao Wu Yiding Zh | 2008 | Cell Stem Cell2008，，5： | 1 |
| 4 | Generation of Induced Pluripotent Stem Cells from Adult Rhesus Monkey Fibroblasts显示文摘 | Haisong Liu Fangfang Zhu Jun Yong Pengbo Zhang Pingping Hou Honggang Li Wei Jiang Jun Cai Meng Liu Kai Cui Xiuxia Qu Tingting Xiang Danyu Lu Xiaochun Chi Ge Gao Weizhi Ji Mingxiao Ding Hongkui Deng | 2008 | Cell Stem Cell2008，，6： | 1 |
| 5 | Generation of Induced Pluripotent Stem Cells from Adult Rhesus Monkey Fibroblasts显示文摘 | Haisong Liu Fangfang Zhu Jun Yong Pengbo Zhang Pingping Hou Honggang Li Wei Jiang Jun Cai Meng Liu Kai Cui Xiuxia Qu Tingting Xiang Danyu Lu Xiaochun Chi Ge Gao Weizhi Ji Mingxiao Ding Hongkui Deng | 2008 | Cell Stem Cell2008，，6： | 1 |
| 6 | Detection of Target Genes in Viable Bacteria and Extracellular DNA Using Loop-Mediated Isothermal Amplification Assay显示文摘When the loop-mediated isothermal amplification(LAMP)assay is used for detecting target genes,DNA extraction is unnecessary in many cases.Simple pretreatment(e.g.heating)is enough to obtain rather sensitive responses.Even test samples without any pretreatment can be used as template.This feature suggests that LAMP is superior to PCR in developing point-of-care test strategies.In this study,using Stx1 gene from E.coli as model,we verified that viable cells,dead cells and extracellular DNA could function as template in the LAMP assay.In the incubation at 63℃,viable bacteria in the LAMP reaction mixture lysed completely within 2 min,providing DNA template for nucleic acid amplification.The Stx1 gene in diluted culture medium,spiked tap water,spiked seawater and real seawater all could be detected,with or without the step of DNA extraction.We found that the complex substances in real sample(e.g.natural seawater)exhibited considerable inhibitory effect on the sensitivity of the LAMP assay.These outcomes are meaningful for building a point-of-care strategy by employing the LAMP assay for environmental monitoring,bio-resource surveys,food safety,etc.in particular those based on environmental DNA. | YANG Qianqian ZHANG Xuzhi JIANG Xiaoyu LI Yang ZHAO Jun HAO Zhihui WANG Pingping QU Keming | 2020 | 渔业科学进展2020，41，2： | 0 |
| 7 | Developmental competence and ultrastructural changes of heat-stressed mouse early blastocysts produced in vitro显示文摘Mouse early blastocysts were exposed to temperatures of 39℃ and 41℃ for 2 h,respectively,to determine their developmental competence and ultrastructural changes. The results showed that heat stress at 41℃ for 2 h,significantly reduced the percentages of expanded and hatched blastocysts,but not at 39℃ for 2 h. The average cell numbers in expanded blastocysts,which developed from early blastocysts heat-stressed at temperatures of 39℃ and 41℃,were significantly reduced. The average cell numbers in hatched blastocysts subjected to heat stress were no different from those in the control group cultured at 37℃. The mitochondria of the early blastocysts heat-stressed at 39℃ for 2 h,were slightly swollen,but they had recovered after culturing at 37℃ for 2 h. However,the mitochondria in the blastocysts heat stressed at 41℃ for 2 h were severely swollen,and their number increased. The ribosomes shed from the rough endoplasmic reticulum,and the number of secondary lysosomes in the plasma increased. The integrity of desmosomes was disrupted. The space between the nuclear envelope and the perivitelline membrane enlarged. The fibre fraction and the particulate fraction of nucleoli were separated. The heterochromatin in nucleoli was also increased in its quantity. There were some lamellar-shape structures and heterogeneous dense materials exhibiting in the cytoplasm. The ultrastructural changes induced by heat shock at 41℃ for 2 h were not reversible. In conclusion,the damage of heat stress to mitochondria,lysosomes,ribosomes and cell nucleus,may be one of the most important factors that inhibit the normal development of mouse early | Pingping Qu Wenru TIAN Tao LI Zhongling JIANG Shansong GAO Zhongjie TIAN Mingzhi WANG | 2009 | Current Zoology2009，55，1： | 0 |
| 8 | MINE:A Method of Multi-Interaction Heterogeneous Information Network Embedding显示文摘Interactivity is the most significant feature of network data,especially in social networks.Existing network embedding methods have achieved remarkable results in learning network structure and node attributes,but do not pay attention to the multi-interaction between nodes,which limits the extraction and mining of potential deep interactions between nodes.To tackle the problem,we propose a method called Multi-Interaction heterogeneous information Network Embedding(MINE).Firstly,we introduced the multi-interactions heterogeneous information network and extracted complex heterogeneous relation sequences by the multi-interaction extraction algorithm.Secondly,we use a well-designed multi-relationship network fusion model based on the attention mechanism to fuse multiple interactional relationships.Finally,applying a multitasking model makes the learned vector contain richer semantic relationships.A large number of practical experiments prove that our proposed method outperforms existing methods on multiple data sets. | Dongjie Zhu Yundong Sun Xiaofang Li Haiwen Du Rongning Qu Pingping Yu Xuefeng Piao Russell Higgs Ning Cao | 2020 | Computers, Materials & Continua2020，，6： | 0 |
| 9 | High-throughput measurements of ciprofloxacin, clomipramine and fexofenadine hydrochlorides with an 8-channel electrical titrator显示文摘High-throughput measurements of ciprofloxacin, clomipramine and fexofenadine hydrochlorides were performed by employing an automatic 8-channel electrical titrator. Silver nitrate(AgNO_3) and sodium tetraphenylborate(NaTPB) were used as titrants. When AgNO_3 was used for measuring the drugs in pure form, recoveries were 97.6%–102.0% with RSD values 1.0%; for measuring them in pharmaceutical formulations, recoveries were 96.6%–99.1% with RSD values 1.0%. Batch samples of eight could be measured simultaneously and maximally 30 measurements per minute could be completed. When Na TPB was used for measuring the drugs in pure form, the recoveries were 96.8%–102.6% with RSD values 0.8%; for measuring them in pharmaceutical formulations, the recoveries were 97.5%–102.7% with RSD values 0.9%. For all analyses, no auxiliary devices or chemicals were needed and there was no requirement for changing or cleaning working electrodes between measurements. The efficiency,accuracy and precision of the proposed method make it an alternative for routine quality control analyses. | Xuzhi Zhang Qianqian Yang Xuchang Zhang Pingping Wang Zhihui Hao Jun Zhao Keming Qu | 2018 | Chinese Chemical Letters2018，29，9： | 0 |
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