|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | D(β)-vertex-distinguishing total coloring of graphs显示文摘A new concept of the D(β)-vertex-distinguishing total coloring of graphs, i.e., the proper total coloring such that any two vertices whose distance is not larger than β have different color sets, where the color set of a vertex is the set composed of all colors of the vertex and the edges incident to it, is proposed in this paper. The D(2)-vertex-distinguishing total colorings of some special graphs are discussed, meanwhile, a conjecture and an open problem are presented. | ZHANG Zhongfu,LI Jingwen,CHEN Xiang’en,YAO Bing, WANG Wenjie & QIU Pengxiang Institute of Applied Mathematic, Lanzhou Jiaotong University, Lanzhou 730070, China College of Mathematics and Information Science, Northwest Normal University, Lanzhou 730070, China College of Information and Electrical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China | 2006 | Science China Mathematics2006，49，10： | 54 |
| 2 | Effect of wastewater composition on the calcium carbonate precipitation in upflow anaerobic sludge blanket reactors显示文摘Calcium carbonate often precipitates in anaerobic reactors treating wastewater with high calcium content.The aim of this paper is to study the effect of wastewater composition on calcium carbonate precipitation in upflow anaerobic sludge blanket(UASB)reactors.Two laboratory-scale UASB reactors were operated with calcium-containing influents using acetate and carbohydrate as substrate,respectively.There was an obvious accumulation of inorganic precipitate observed in the biogranules.Observations via scanning electron microscope(SEM)and energy dispersive spectroscopy(EDS)showed that the acclimated biogranules in the two reactors differed in microstructure.Calcium carbonate was found to have precipitated on the surface of acetate-degrading biogranules,but precipitated at the core of the carbohydrate-degrading biogranules.The results indicated that substrates had significant influence on the location of calcium carbonate precipitation in anaerobic granular sludge,which was expected due to the different methanogens distribution and pH gradient within the granular sludge degrading various substrates.Moreover,the location of calcium carbonate precipitation substantially affected the specific methanogenic activity(SMA)of the granular sludge.The SMA of the acetate-degrading biogranules dropped from 1.96 gCODCH4·gVSS^(–1)·d^(–1)to 0.61 gCODCH4·gVSS^(–1)·d^(–1)after 180-d of operation in the reactor.However,the SMA of the carbohydrate-degrading biogranules was not adversely affected by calcium carbonate precipitation. | Shucheng YANG Yanling HE Yonghong LIU Charles CHOU Pengxiang ZHANG Dongqi WANG | 2010 | Frontiers of Environmental Science & Engineering2010，4，2： | 6 |
| 3 | Apple SERRATE negatively mediates drought resistance by regulating MdMYB88 and MdMYB124 and microRNA biogenesis显示文摘The function of serrate(SE)in miRNA biogenesis in Arabidopsis is well elucidated,whereas its role in plant drought resistance is largely unknown.In this study,we report that MdSE acts as a negative regulator of apple(Malus×domestica)drought resistance by regulating the expression levels of MdMYB88 and MdMYB124 and miRNAs,including mdm-miR156,mdm-miR166,mdm-miR172,mdm-miR319,and mdm-miR399.MdSE interacts with MdMYB88 and MdMYB124,two positive regulators of apple drought resistance.MdSE decreases the transcript and protein levels of MdMYB88 and MdMYB124,which directly regulate the expression of MdNCED3,a key enzyme in abscisic acid(ABA)biosynthesis.Furthermore,MdSE is enriched in the same region of the MdNECD3 promoter where MdMYB88/MdMYB124 binds.Consistently,MdSE RNAi transgenic plants are more sensitive to ABA-induced stomatal closure,whereas MdSE OE plants are less sensitive.In addition,under drought stress,MdSE is responsible for the biogenesis of mdm-miR399,a negative regulator of drought resistance,and negatively regulates miRNAs,including mdm-miR156,mdm-miR166,mdm-miR172,and mdm-miR319,which are positive regulators of drought resistance.Taken together,by revealing the negative role of MdSE,our results broaden our understanding of the apple drought response and provide a candidate gene for apple drought improvement through molecular breeding. | Xuewei Li Pengxiang Chen Yinpeng Xie Yan Yan Liping Wang Huan Dang Jing Zhang Lingfei Xu Fengwang Ma Qingmei Guan | 2020 | Horticulture Research2020，7，1： | 4 |
| 4 | Regional Guanxi Culture and Entrepreneurs' Action Logic: A Multilevel Analysis显示文摘 | Xinchun Li Wenping Ye Pengxiang Zhang Xiao Xiao | 2016 | Frontiers of Business Research in China2016，10，1： | 3 |
| 5 | Investigation and analysis of the linkage mechanism and whole process cost of livestock manure organic fertilizer显示文摘In recent years,the utilization of manure resources for livestock and poultry farming has attracted a widespread attention,and manure resources utilization models suitable for different regional characteristics have formed gradually.Among them,the production of organic fertilizer from animal manure is a vital utilization method.However,there are still some problems such as high production costs,difficult sales,and the unwillingness of farmers to use organic fertilizers which have affected the breeding cycle and the sustainability of manure treatment in livestock and poultry breeding.This article selected 371 organic fertilizer plants,related farms and farmers in China,focusing on the main links of the entire process of livestock manure-organic fertilizer-farm application,and studied the mode of animal manure collection by organic fertilizer plants.The costs of organic fertilizer production and farmland application were discussed.Moreover,suggestions were made for the promotion and implementation of large-scale organic fertilizers to make good utilization of manure resources in livestock and poultry farming. | Shanshan Dong Bin Sui Yujun Shen Haibo Meng Lixin Zhao Jingtao Ding Haibin Zhou Xi Zhang Hongsheng Cheng Jian Wang Ran Li Liqiu Song Pengxiang Xu Ji Li | 2020 | International Journal of Agricultural and Biological Engineering2020，13，2： | 2 |
| 6 | Seismogenic Structures of the 2006 ML4.0 Dangan Island Earthquake Offshore Hong Kong显示文摘The northern margin of the South China Sea, as a typical extensional continental margin, has relatively strong intraplate seismicity. Compared with the active zones of Nanao Island, Yangjiang, and Heyuan, seismicity in the Pearl River Estuary is relatively low. However, a ML4.0 earthquake in 2006 occurred near Dangan Island(DI) offshore Hong Kong, and this site was adjacent to the source of the historical M5.8 earthquake in 1874. To reveal the seismogenic mechanism of intraplate earthquakes in DI, we systematically analyzed the structural characteristics in the source area of the 2006 DI earthquake using integrated 24-channel seismic profiles, onshore–offshore wide-angle seismic tomography, and natural earthquake parameters. We ascertained the locations of NW-and NE-trending faults in the DI sea and found that the NE-trending DI fault mainly dipped southeast at a high angle and cut through the crust with an obvious low-velocity anomaly. The NW-trending fault dipped southwest with a similar high angle. The 2006 DI earthquake was adjacent to the intersection of the NE-and NW-trending faults, which suggested that the intersection of the two faults with different strikes could provide a favorable condition for the generation and triggering of intraplate earthquakes. Crustal velocity model showed that the high-velocity anomaly was imaged in the west of DI, but a distinct entity with low-velocity anomaly in the upper crust and high-velocity anomaly in the lower crust was found in the south of DI. Both the 1874 and 2006 DI earthquakes occurred along the edge of the distinct entity. Two vertical cross-sections nearly perpendicular to the strikes of the intersecting faults revealed good spatial correlations between the 2006 DI earthquake and the low to high speed transition in the distinct entity. This result indicated that the transitional zone might be a weakly structural body that can store strain energy and release it as a brittle failure, resulting in an earthquake-prone area. | XIA Shaohong CAO Jinghe SUN Jinlong LV Jinshui XU Huilong ZHANG Xiang WAN Kuiyuan FAN Chaoyan ZHOU Pengxiang | 2018 | Journal of Ocean University of China2018，17，1： | 2 |
| 7 | Bulk growth and separation of single-walled carbon nanotubes from rhenium catalyst显示文摘Bulk synthesis of single-walled carbon nanotubes(SWNTs)using solid catalyst has been challenging,despite of recent breakthrough in the chirality-specific growth on the flat substrate surface.In this work,we propose a porous magnesia support rhenium catalyst for bulk synthesis of SWNTs.It is found that the well-dispersed catalyst with a high melting point and the optimal chemical vapor deposition reaction conditions account for the growth of SWNTs.Detailed characterizations reveal the produced SWNTs are dominant in(n,n−1)and(n,n−2)species.Furthermore,by using a multicolumn chromatography post-growth separation method,SWNTs with three defined diameter ranges were obtained.This work guides the design of porous oxide supported catalyst for bulk synthesis and diameter-dependent sorting of SWNTs,which will ultimately help harness the extraordinary properties of SWNTs. | Chen Ma Yumin Liu Lili Zhang Liu Qian Yiming Zhao Ying Tian Qianru Wu Dong Li Nan Zhao Xueting Zhang Liantao Xin Huaping Liu Pengxiang Hou Chang Liu Maoshuai He Jin Zhang | 2022 | Nano Research2022，15，7： | 2 |
| 8 | Vertex-distinguishing total colorings of graphs显示文摘 | ZHANG Zhongfu QIU Pengxiang XU Baogen | 2008 | Ars Combinatoria2008，87，： | 1 |
| 9 | Vertex-distinguishing total coloring of graphs 显示文摘 | Zhang Zhongfu Qiu Pengxiang Xu Baogen | 2008 | Ars Combinatoria2008，87，： | 1 |
| 10 | Vertexdistinguishing total coloring of graphs 显示文摘 | ZHANG Zhongfu QIU Pengxiang XU Baogen | 2008 | Ars Combinatoria2008，87，： | 1 |
| 11 | vertex-distinguishing total colorings of graphs 显示文摘 | ZHANG Zhongfu QIU Pengxiang XU Baogen | 2008 | Ars Combinatoria2008，87，： | 1 |
| 12 | verter - dis- tinguishing total colourings of graphs 显示文摘 | ZHANG zhongfu QIU Pengxiang XU Baogen | 2008 | Ars Combinatoria2008，87，： | 1 |
| 13 | Vertex-distinguishing total colorings of graphs 显示文摘 | ZHANG Zhongfu QIU Pengxiang XU Baogen | 2008 | Ars Combinatoria2008，87，： | 1 |
| 14 | Vertex-distinguishing total colorings of graphs 显示文摘 | ZHANG Zhongfu QIU Pengxiang XU Baogen | 2008 | Ars Combinatoria2008，87，： | 1 |
| 15 | An invasive zone in human liver cancer identified by Stereo-seq promotes hepatocyte–tumor cell crosstalk,local immunosuppression and tumor progression显示文摘Dissecting and understanding the cancer ecosystem,especially that around the tumor margins,which have strong implications for tumor cell infiltration and invasion,are essential for exploring the mechanisms of tumor metastasis and developing effective new treatments.Using a novel tumor border scanning and digitization model enabled by nanoscale resolution-SpaTial Enhanced REsolution Omics-sequencing(Stereo-seq),we identified a 500µm-wide zone centered around the tumor border in patients with liver cancer,referred to as“the invasive zone”.We detected strong immunosuppression,metabolic reprogramming,and severely damaged hepatocytes in this zone.We also identified a subpopulation of damaged hepatocytes with increased expression of serum amyloid A1 and A2(referred to collectively as SAAs)located close to the border on the paratumor side.Overexpression of CXCL6 in adjacent malignant cells could induce activation of the JAK-STAT3 pathway in nearby hepatocytes,which subsequently caused SAAs’overexpression in these hepatocytes.Furthermore,overexpression and secretion of SAAs by hepatocytes in the invasive zone could lead to the recruitment of macrophages and M2 polarization,further promoting local immunosuppression,potentially resulting in tumor progression.Clinical association analysis in additional five independent cohorts of patients with primary and secondary liver cancer(n=423)showed that patients with overexpression of SAAs in the invasive zone had a worse prognosis.Further in vivo experiments using mouse liver tumor models in situ confirmed that the knockdown of genes encoding SAAs in hepatocytes decreased macrophage accumulation around the tumor border and delayed tumor growth.The identification and characterization of a novel invasive zone in human cancer patients not only add an important layer of understanding regarding the mechanisms of tumor invasion and metastasis,but may also pave the way for developing novel therapeutic strategies for advanced liver cancer and other solid tumors. | Liang Wu Jiayan Yan Yinqi Bai Feiyu Chen Xuanxuan Zou Jiangshan Xu Ao Huang Liangzhen Hou Yu Zhong Zehua Jing Qichao Yu Xiaorui Zhou Zhifeng Jiang Chunqing Wang Mengnan Cheng Yuan Ji Yingyong Hou Rongkui Luo Qinqin Li Liang Wu Jianwen Cheng Pengxiang Wang Dezhen Guo Waidong Huang Junjie Lei Shang Liu Yizhen Yan Yiling Chen Sha Liao Yuxiang Li Haixiang Sun Na Yao Xiangyu Zhang Shiyu Zhang Xi Chen Yang Yu Yao Li Fengming Liu Zheng Wang Shaolai Zhou Huanming Yang Shuang Yang Xun Xu Longqi Liu Qiang Gao Zhaoyou Tang Xiangdong Wang Jian Wang Jia Fan Shiping Liu Xinrong Yang Ao Chen Jian Zhou | 2023 | Cell Research2023，33，8： | 1 |
| 16 | Surface enhanced raman scattering of gold/C60(/C70) nano-clusters deposited on AAO nano-sieve显示文摘 | Zhixun Luo Fang Yan Pengxiang Zhang | 2006 | Vibrational Spectroscopy2006，41，1： | 1 |
| 17 | Two-Dimensional Pnictogen for Field-Effect Transistors显示文摘Two-dimensional(2D)layered materials hold great promise for various future electronic and optoelectronic devices that traditional semiconductors cannot afford.2D pnictogen,group-VA atomic sheet(including phosphorene,arsenene,antimonene,and bismuthene)is believed to be a competitive candidate for next-generation logic devices.This is due to their intriguing physical and chemical properties,such as tunable midrange bandgap and controllable stability.Since the first black phosphorus fieldeffect transistor(FET)demo in 2014,there has been abundant exciting research advancement on the fundamental properties,preparation methods,and related electronic applications of 2D pnictogen.Herein,we review the recent progress in both material and device aspects of 2D pnictogen FETs.This includes a brief survey on the crystal structure,electronic properties and synthesis,or growth experiments.With more device orientation,this review emphasizes experimental fabrication,performance enhancing approaches,and configuration engineering of 2D pnictogen FETs.At the end,this review outlines current challenges and prospects for 2D pnictogen FETs as a potential platform for novel nanoelectronics. | Wenhan Zhou Jiayi Chen Pengxiang Bai Shiying Guo Shengli Zhang Xiufeng Song Li Tao Haibo Zeng | 2019 | Research2019，，1： | 1 |
| 18 | Experiment studies of bottom influence in shallow layer water explosion显示文摘 | Gu Wenbin Ye Xushuang Zhang Pengxiang | 2001 | Journal of PLA University of Science and Technology2001，2，2： | 1 |
| 19 | Vertex distinguishing total coloring of graphs显示文摘 | Zhang Zhongfu Qiu Pengxiang Xu Baogen | 2008 | Ars Combina- toria2008，87，： | 1 |
| 20 | Vertex Distinguishing Total Coloring of Graphs显示文摘 | Zhang Zhongfu Qiu Pengxiang Xu Baoen | 2008 | Ars Combinatoria2008，87，： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员