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| 1 | Palaeoecological and palaeoenvironmental significance of someimportant spores and micro-algae in Quaternary deposits显示文摘Spores of ferns and allied plants, and micro-algae frequently occur in abundance in Quaternary deposits, but their palaeoenvironmental significance is seldom evaluated. This paper presents morphological descriptions of spores of Selaginella sinensis (Desv.) Spring, 1843 (Selaginellaceae) and Ceratopteris cf. thalictroides (L.) Brongniart, 1821 (Parkeriaceae) and the algae Pediastrum boryanum (Turpin) Meneghini, 1840, P. simplex Meyen, 1829, P. integrum N geli, 1849 (all Hydrodictyaceae), Spiniferites Mantell, 1850, emend. Sarjeant, 1970 (Spiniferitaceae) and Concentricystes Rossignal, 1962, emend. Jiabo, 1978 (systematic position unclear), and discusses their occurrence in mostly Quaternary sedimentary successions. All are closely associated with aquatic habitats. Extant Selaginella sinensis often colonizes fairly wet hillsides and gaps between rocks, and shady sides of ravines and slopes; it is also found within thickets of trees and shrubs (boscages) and in forests with calcareous soils. Ceratopteris thalictroides, Pediastrum and Concentricystes inhabit freshwater lakes and both natural and artificial wetlands, such as paddy fields and ditches. Spiniferites is a salt-water genus and usually associated with the marine realm. Fossil and subfossil representatives of all of these taxa can be useful proxies of biodiversity and, therefore, also important for determining environmental conditions during the Quaternary period. | TANG LingYu MAO LiMi Lü XinMiao MA QingFeng ZHOU ZhongZe YANG ChunLei KONG ZhaoChen BATTEN David J | 2013 | Chinese Science Bulletin2013，58，25： | 9 |
| 2 | Pollen-inferred Holocene vegetation and climate histories in Taro Co,southwestern Tibetan Plateau显示文摘A 310-cm-long sediment core,covering the last10,200 years,was collected from Taro Co on the southwestern Tibetan Plateau and analyzed for pollen,grain size and total inorganic carbon content.The pollen data showed that vegetation changed from alpine steppe to alpine meadow during 10,200–8,900 cal a BP,to alpine steppe dominated by Artemisia during 8,900–7,400 cal a BP,to alpine meadow during 7,400–3,300 cal a BP and to alpine steppe after 3,300 cal a BP.Correspondingly,the pollen,grain size and total inorganic carbon content results revealed climatic change in this area over four stages.The initial stage was from 10,200 to 8,900 cal a BP,during which the climate changed from cold-dry to warm-humid.The second stage(8,900–7,400 cal a BP)was characterized by a warm and dry climate.However,at approximately7,400 cal a BP,the climate began to become cold and humid,which continued until 3,300 cal a BP.The last stage,from 3,300 cal a BP to present,was characterized as cold and increasingly arid.Climatic events of the early and mid-late Holocene showed that the area was significantly affected by the westerlies.However,the mid-Holocene climate in Taro Co was controlled by the Indian monsoon.The mid-late Holocene depositional environment record of Taro Co was very important to further elaborate the degree of influence by the westerlies or Indian monsoon. | Qingfeng Ma Liping Zhu Xinmiao L Yun Guo Jianting Ju Junbo Wang Yong Wang Lingyu Tang | 2014 | Chinese Science Bulletin2014，59，31： | 7 |
| 3 | Syndecan-2, negatively regulated by miR-20b-5p, contributes to 5-fluorouracil resistance of colorectal cancer cells via the JNK/ERK signaling pathway显示文摘5-Fluorouracil (5-FU) resistance has been long considered as an obstacle to the efficacy of chemotherapy in colorectal cancer (CRC). In this study, we demonstrated the role of miR-20b-5p-regulated syndecan-2 (SDC2) in 5-FU resistance of CRC cells. 5-FU-resistant SW480 CRC cells were established by treatment of SW480 cells with stepwise increase of 5-FU concentration. The results showed that SDC2 was expressed significantly higher in SW480/5-FU cells than in SW480/WT cells as revealed by quantitative real-time polymerase chain reaction and western blot analysis. MTT assay and BrdU assay showed that SDC2 overexpression led to increased cell survival rate, while SDC2 knockdown reversed the drug resistance of SW480/5-FU cells. Wound healing and transwell invasion assays revealed that knockdown of SDC2 inhibited the migratory and invasive ability of SW480/5-FU cells. Moreover, animal experiments indicated that si-SDC2 plays a suppressive role in tumor growth in vivo. We also confirmed that miR-20b-5p interacted with SDC2, which reversed the effect of SDC2 in SW480/5-FU cells via the c-Jun N-terminal kinase (JNK)/extracellular regulated protein kinases (ERK) signaling pathway. These findings showed that JNK/ERK signaling pathway is involved in miR-20b-5p/SDC2 axis-mediated 5-FU resistance in SW480/5-FU cells, indicating that the miR-20b-5p/SDC2 axis is a potential target for reversing 5-FU resistance in CRC. | Ruheng Hua Yan Zhang Xiyue Yan Dong Tang Xiaolong Li Qingfeng Ni Daorong Wang Jianwei Zhu | 2021 | Acta Biochimica et Biophysica Sinica2021，53，11： | 4 |
| 4 | Fifty years of Quaternary palynology in the Tibetan Plateau显示文摘Quaternary palynology in the Tibetan Plateau(TP)was initiated in the 1960s to meet the needs of economic development in western China.Pollen analysis was conducted for the first time on a 200-m long core of Quaternary lacustrine sediments taken from the main body of the TP in order to study pollen assemblages as well as vegetation and climate changes of glacial(cold)/interglacial(warm)periods.Pollen analysis of alpine snow and ice began at the first scientific expedition to the TP in the 1970s.After the 1980s,a series of international collaborative programs were carried out under Sino-French,Sino-German,Sino-Australian,and Sino-American cooperation,marking the integration of Chinese Quaternary palynology society with the international community.New methods for Quaternary palynology were gradually promoted and applied,changing the vegetational and climatic interpretation of Quaternary palynology from qualitative to quantitative.Since the 1990s,many palynologists have carried out extensive Quaternary palynological studies on fossil pollen sites of more than 60 lakes/sections and alpine glaciers in the TP to discuss the spatiotemporal vegetation changes and climatic and environmental evolution of the TP since the Pleistocene.Over the past half-century,Quaternary palynology in the TP has contributed to the establishment of the Chinese Quaternary pollen database and the study of vegetation and climate evolution since the Last Glacial Maximum(LGM)in the TP.Currently available pollen records revealed the spatial and temporal distribution of vegetation in the TP since the LGM,exhibiting expansions and shrinkages of forest,meadow,grassland and desert in different periods such as the LGM,the last deglaciation,and Holocene optimum period.The paleomonsoon reflected by paleovegetation since the LGM has undergone the changes of weak-strengthening-strong-weakening but still active-shrinking,which is mainly affected by solar insolation. | Lingyu TANG Caiming SHEN Houyuan LU Chuanhai LI Qingfeng MA | 2021 | Science China Earth Sciences2021，64，11： | 3 |
| 5 | A joint call for actions to advance taxonomy in China显示文摘Taxonomy plays an important role in understanding the origin, evolution, and ecological functionality of biodiversity. There are large number of unknown species yet to be described by taxonomists, which together with their ecosystem services cannot be effectively protected prior to description. Despite this, taxonomy has been increasingly underrated insufficient funds and permanent positions to retain young talents. Further, the impact factordriven evaluation systems in China exacerbate this downward trend, so alternative evaluation metrics are urgently necessary. When the current generation of outstanding taxonomists retires,there will be too few remaining taxonomists left to train the next generation. In light of these challenges, all co-authors worked together on this paper to analyze the current situation of taxonomy and put out a joint call for immediate actions to advance taxonomy in China. | Chaodong Zhu Arong Luo Ming Bai Michael COrr Zhonge Hou Siqin Ge Jun Chen Yibo Hu Xuming Zhou Gexia Qiao Hongzhi Kong Limin Lu Xiaohua Jin Lei Cai Xinli Wei Ruilin Zhao Wei Miao Qingfeng Wang Zhongli Sha Qiang Lin Meng Qu Jianping Jiang Jiatang Li Jing Che Xuelong Jiang Xiaoyong Chen Lianming Gao Zongxin Ren Chunlei Xiang Shixiao Luo Donghui Wu Dong Liu Yanqiong Peng Tao Su Chenyang Cai Tianqi Zhu Wanzhi Cai Xingyue Liu Hu Li Huaijun Xue Zhen Ye Xuexin Chen Pu Tang Shujun Wei Hong Pang Qiang Xie Feng Zhang Feng Zhang Xianjin Peng Aibing Zhang Taiping Gao Changfa Zhou Chen Shao Libin Ma Zhaoming Wei Yunxia Luan Ziwei Yin Wu Dai Cong Wei Xiaolei Huang Jingxian Liu Xiangsheng Chen Tianci Yi Zhisheng Zhang Zhulidezi Aishan Qin Li Hongying Hu | 2022 | Zoological Systematics2022，47，3： | 1 |
| 6 | DiflS: Matching algorithm to different version maps based on SVG 显示文摘 | Du Qingfeng Guo Zhichao Tang Xuebo | 2012 | Journal of Wuhan University ( Information Science)2012，37，8： | 1 |
| 7 | Expert systern for operation optimization and control of cutter suction dredger显示文摘 | Tang Jianzhong Wang Qingfeng Bi Zhiyue | 2008 | Expert Systems with Applications2008，34，3： | 1 |
| 8 | Expert systemfor operation optimization and control of cutter suctiondredger显示文摘 | Tang Jianzhong* Wang Qingfeng Bi Zhiyue | 2008 | Expert Systems with Applications2008，34，3： | 1 |
| 9 | Identification and Characterization of a Novel Thymus Aging Related Protein Rwdd1显示文摘By using DDRT-PCR and EST segment ligation,a novel mouse thymus involution related gene Rwdd1 was identified. The reading frame encoded a protein of 243 amino acid residues which contained an RWD domain at the N terminus. Rwdd1 expression in thymus was decreased in aged and oxidatively stressed mice. It was found to be expressed extensively in thymocytes and thymic epithelial cells. The expression level of Rwdd1 could affect the transactivation activity of androgen receptor (AR) in transiently transfected thymic epithelial cells. However,no direct interaction could be detected by fluorescence resonance energy transfer (FRET) analysis. In conclusion,Rwdd1 is a thymus involution related protein that may indirectly affect AR signaling pathway. | Ning Kang Lian Duan Long Tang Shirong Liu Chunman Li Yonghai Li Qingfeng Liu Yu Hu Lianxian Cui Wei He | 2008 | Cellular & Molecular Immunology2008，5，4： | 1 |
| 10 | DFT计算研究碱性条件下γ-FeOOH(010)上氧析出反应机理(英文)显示文摘一个高效经济的氧析出反应(OER)催化剂是大范围应用太阳能转化能源的关键.在众多有潜力的OER催化剂中,金属氢氧化物,尤其是Fe OOH表现出很高的OER活性.我们采用DFT+U研究了γ-Fe OOH(010)表面上OER反应机理;得到了OH–和空穴对的化学势,并将OH–阴离子包含在反应机理中,以此来说明碱性条件下阳极的OER过程.随后分析了催化剂中OH-,O-和Fe-终止的表面上OER反应路径.含有OH-,O-终止的表面上,O_2分子是通过OH与表面氧物种(–OH*和–O*)反应,或二个表面氧物种相结合而形成的.在Fe-终止的表面上,O_2只能通过首先在Fe位上吸附OH而形成.不同形式表面上O_2析出的化学势决定步骤取决于每个路径中基元步骤自由能的变化.结果表明,O_2的形成需要重建表面Fe位,因此,有利于部分暴露Fe位的条件也将促进O_2的形成. | Miru Tang Qingfeng Ge | 2017 | Chinese Journal of Catalysis2017，38，9： | 0 |
| 11 | Semantic segmentation for remote sensing images based on an AD-HRNet model显示文摘Semantic segmentation for remote sensing images faces challenges of unbalanced category weight,rich context causing difficulties of recognition,blurred boundaries of multi-scale objects,and so on.To address these problems,we propose a new model by combining HRNet with attention mechanisms and dilated convolution,denoted as:AD-HRNet for the semantic segmentation of remote sensing images.In the framework of AD-HRNet,we obtained the weight value of each category based on an improved weighted cross-entropy function by introducing the median frequency balance method to solve the issue of class weight imbalance.The Shuffle-CBAM module with channel attention and spatial attention in AD-HRNet framework was applied to extract more global context information of images through slightly increasing the amount of computation.To address the problem of blurred boundaries caused by multi-scale object segmentation and edge segmentation,we developed an MDC-DUC module in AD-HRNet framework to capture the context information of multi-scale objects and the edge information of many irregular objects.Taking Postdam,Vaihingen,and SAMA-VTOL datasets as materials,we verified the performance of AD-HRNet by comparing with eight typical semantic segmentation models.Experimental results shown that AD-HRNet increases the mIoUs to 75.59%and 71.58%based on the Postdam and Vaihingen datasets,respectively. | Xue Yang Xiang Fan Mingjun Peng Qingfeng Guan Luliang Tang | 2022 | International Journal of Digital Earth2022，15，1： | 0 |
| 12 | Dissection of cellular and molecular mechanisms of aristolochic acid-induced hepatotoxicity via single-cell transcriptomics显示文摘Background:Aristolochic acids(AAs),a class of carcinogenic and mutagenic natural products from Aristolochia and Asarum plants,are well-known to be responsible for inducing nephrotoxicity and urothelial carcinoma.Recently,accumulating evidence suggests that exposure to AAs could also induce hepatotoxicity and even hepatocellular carcinoma,though the mechanisms are poorly defined.Methods:Here,we aimed to dissect the underlying cellular and molecular mechanisms of aristolochic acid I(AAI)-induced hepatotoxicity by using advanced single-cell RNA sequencing(scRNA-seq)and proteomics techniques.We established the first single-cell atlas of mouse livers in response to AAI.Results:In hepatocytes,our results indicated that AAI activated NF-κB and STAT3 signaling pathways,which may contribute to the inflammatory response and apoptosis.In liver sinusoidal endothelial cells(LSECs),AAI activated multiple oxidative stress and inflammatory associated signaling pathways and induced apoptosis.Importantly,AAI induced infiltration of cytotoxic T cells and activation of proinflammatory macrophage and neutrophil cells in the liver to produce inflammatory cytokines to aggravate inflammation.Conclusions:Collectively,our study provides novel knowledge of AAs-induced molecular characteristics of hepatotoxicity at a singlecell level and suggests future treatment options for AAs associated hepatotoxicity. | Piao Luo Jiayun Chen Qian Zhang Fei Xia Chen Wang Yunmeng Bai Huan Tang Dandan Liu Liwei Gu Qingfeng Du Wei Xiao Chuanbin Yang Jigang Wang | 2022 | Precision Clinical Medicine2022，5，4： | 0 |
| 13 | Surface charge property governing co-transport of illite colloids and Eu(Ⅲ) in saturated porous media显示文摘The transport of colloids and radionuclides is sophisticated because of the variety of charge properties between colloidal particles and host subsurface media, which causes great difficulty in establishing a reliable model of radionuclides migration by taking the colloid phase into consideration. In this work,the co-transport of illite colloids(IC) and Eu(Ⅲ) in the quartz sand and iron-coated sand porous media was investigated by column experiments to address the predominant mechanism of charge properties on co-transport. Results showed that Eu(Ⅲ) transport was driven by the illite colloids and electrostatic interaction was critical in governing the co-transport patterns. The promotion of Eu(Ⅲ) transport by IC was attenuated in the iron-coated sand systems;more IC-Eu(Ⅲ) complexes were retained uniformly in the column. The pore throat shrinkage caused by electrostatic attachment between aggregated IC and iron oxides exacerbated the physical straining and size exclusion effect of IC-Eu(Ⅲ) complexes. An aggravated irreversible retention of IC-Eu(Ⅲ) was detected in iron-coated sand column due to the electrostatic attraction of IC-Eu(Ⅲ) to host media. The findings are essential for improving the understanding on the potential transport, retention and release risk of colloids associated radionuclides, and imply that the positively charged permeable reactive barrier is an effective strategy to reduce the transport risk of colloid associated radionuclides. | Xiaoyan Wei Duoqiang Pan Qi Tan Xinyi Shi Junjun Hou Qingfeng Tang Zhen Xu Wangsuo Wu Bin Ma | 2023 | Chinese Chemical Letters2023，34，11： | 0 |
| 14 | Novel voltage signal at proximity-induced superconducting transition temperature in gold nanowires显示文摘We observed a novel voltage peak in the proximity-induced superconducting gold(Au) nanowire while cooling the sample through the superconducting transition temperature. The voltage peak turned dip during warming. The voltage peak or dip was found to originate respectively from the emergence or vanishing of the proximity-induced superconductivity in the Au nanowire.The amplitude of the voltage signal depends on the temperature scanning rate, and it cannot be detected when the temperature is changed slower than 0.03 K/min. This transient feature suggests the non-equilibrium property of the effect. Ginzburg-Landau model clarified the voltage peak by considering the emergence of Cooper pairs of relatively lower free energy in superconducting W contact and the non-equilibrium diffusion of Cooper pairs and quasiparticles. | Jian Wang JunXiong Tang ZiQiao Wang Yi Sun QingFeng Sun Moses H.W.Chan | 2018 | Science China(Physics,Mechanics & Astronomy)2018，61，8： | 0 |
| 15 | An improved hybrid bream derived from a hybrid lineage of Megalobrama amblycephala(♀)×Culter alburnus(♂)显示文摘Distant hybridization is an important technique in fish genetic breeding.In this study,based on the establishment of an allodiploid fish lineage(BT,2n=48,F_(1)–F_(6))derived from distant hybridization between female Megalobrama amblycephala(BSB,2n=48)and male Culter alburnus(TC,2n=48),and the backcross progeny(BTB,2n=48)derived by backcrossing female F_(1) of BT to male BSB,an improved hybrid bream(BTBB,2n=48)was obtained by backcrossing BTB(♀)to BSB(♂).Moreover,the morphological and genetic characteristics of BTBB individuals were investigated;BTBB was similar to BSB in appearance but had a higher body height than BSB.The study results regarding chromosome numbers and DNA content indicated that BTBB is a diploid hybrid fish.The 5S rDNA and Hox gene of BTBB were inherited from the original parents.Gonadal development in BTBB was normal.On the other hand,BTBB had a faster growth rate,higher muscle protein level,and lower muscle carbohydrate level than BSB.Hence,bisexual fertile BTBB is promoted and can be applied as a high-quality fish,and it can also be used as a new fish germplasm resource to develop high-quality fish further.Thus,this study is of great significance for fish genetic breeding. | Dingbin Gong Min Tao Lihui Xu Fangzhou Hu Zehong Wei Shi Wang Yude Wang Qingfeng Liu Chang Wu Kaikun Luo Chenchen Tang Rong Zhou Chun Zhang Yuequn Wang Shaojun Liu | 2022 | Science China(Life Sciences)2022，65，6： | 0 |
| 16 | Modification Mechanism and Uniaxial Fatigue Performances of A356.2 Alloy Treated by Al-Sr-La Composite Refinement-Modification Agent显示文摘Modification mechanism and uniaxial fatigue properties of A356.2 alloy treated by Al-6Sr-7La and traditional Al-5Ti-1B/Al-10Sr(hereinafter refers to traditional treated alloy) were investigated by constant stress amplitude method. Microstructure, dislocation and Si twinning of the alloys were studied by thermal analysis, scanning electron microscopy(SEM) and transmission electron microscopy(TEM). The results showed that Al-6Sr-7La possesses better refining and modification effect than Al-5Ti-1B/Al-10Sr. Meanwhile, fatigue properties of the alloy treated by Al-6Sr-7La are higher than traditional treated alloy, and this is mainly owing to that Al-6Sr-7La treated alloy has more twins in eutectic Si and lower twin spacing. In addition, higher density of nanophases formed on twin faces and La-rich clusters appear at multiple twin intersections. Stacking faults and entrapped nanophases appeared on growing Si twin faces. Impurity induced twinning(IIT) mechanism and twin plane re-entrant edge(TPRE) mechanism are valid for eutectic Si which are important for mechanical optimization of A356.2 alloy. | Liang Chang Qingfeng Zhao Xingchuan Xia Yuming Ding Binxu Guo Jian Ding Ying Tang Zan Zhang Chong Li Xiaomian Sun Junjie Guo Kaihong Song Yongchang Liu | 2022 | Acta Metallurgica Sinica(English Letters)2022，35，6： | 0 |
| 17 | Research on the Influence of Different Psychological Defense Mechanisms on the Psychology of Students显示文摘The contradiction between id and ego is the root cause of various problems in the growth process of students.On the basis of understanding the functions of different psychological defense mechanisms,teachers can assist students in dealing with all areas of inner conflict and thus achieve a balanced state.Psychological defense mechanism is one of the means for individuals to deal with setbacks and anxiety.It plays an important role in preserving an individual's mental health.This paper mainly analyzes the impact of different types of psychological defense mechanisms in the growth process of students and discusses its importance as well as its significance.Finally,by analyzing its influencing factors,this paper also proposes strategies for adjusting the psychological defense mechanism,so as to provide reference for teachers in the practical education process. | Qingfeng Tang Jinlin Peng | 2022 | Journal of Contemporary Educational Research2022，6，5： | 0 |
| 18 | Geochemical Characteristics of the Fluid Inclusions Trapped in Primary Gypsum of the Lop Nor Basin显示文摘Objective The Lop Nor Basin is a very important Quaternary potash-formation basin in China.It is a typical sulphatepotash brine mine with an average grade of 1.4%(KG)in underground concentrated brines.It is extraordinary that the reservoir of potassium-rich brines is glauberite stratum rather than halite rock.The anomalous potassium enrichment,advanced in relative early stage of | MA Lichun TANG Qingfeng WANG Xin SUN Xiaohong | 2016 | Acta Geologica Sinica(English Edition)2016，90，1： | 0 |
| 19 | High-throughput systematic topological generation of low-energy carbon allotropes显示文摘The search for new materials requires effective methods for scanning the space of atomic configurations,in which the number is infinite.Here we present an extensive application of a topological network model of solid-state transformations,which enables one to reduce this infinite number to a countable number of the regions corresponding to topologically different crystalline phases.We have used this model to successfully generate carbon allotropes starting from a very restricted set of initial structures;the generation procedure has required only three steps to scan the configuration space around the parents.As a result,we have obtained all known carbon structures within the specified set of restrictions and discovered 224 allotropes with lattice energy ranging in 0.16–1.76 eV atom^(−1) above diamond including a phase,which is denser and probably harder than diamond.We have shown that this phase has a quite different topological structure compared to the hard allotropes from the diamond polytypic series.We have applied the tiling approach to explore the topology of the generated phases in more detail and found that many phases possessing high hardness are built from the tiles confined by six-membered rings.We have computed the mechanical properties for the generated allotropes and found simple dependences between their density,bulk,and shear moduli. | Vladislav A.Blatov Changhao Yang Dingyi Tang Qingfeng Zeng Andrey A.Golov Artem A.Kabanov | 2021 | npj Computational Materials2021，，1： | 0 |
| 20 | An Attempt to Date the Salt-mounds in the Lop Nor Playa显示文摘1 Introduction The Lop Nor playa,located in the eastern end of the Tarim Basin,capped with a thick salt crust covering an area of approximately 5,500 km2(Ma 2007)that closely resembles a'Great Ear'in satellite images.Understanding the formation of the salt crust can provide | MA Lichun TANG Qingfeng ZHANG Qi KONG Deyong | 2014 | Acta Geologica Sinica(English Edition)2014，88，S1： | 0 |
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