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26篇 您的检索式:作者名="FengMao"
    题名 作者 年代 出处 被引量
1Characterization of focal hepatic lesions with contrast-enhanced C-cube gray scale ultrasonography显示文摘AIM: To characterize enhancement patterns of focal hepatic lesions using C-cube gray scale sonography with a microbubble contrast agent and to evaluate its usefulness in differential diagnosis of hepatic lesions.METHODS: Fifty-four patients with 58 focal hepatic lesions were examined with Levovist-enhanced C-cube gray scale sonography. The final diagnosis of hepatic lesions was 29primary liver cancers, 4 metastases, 8 hemangiomas, 12focal nodular hyperplasias, 2 inflammatory pseudotumors of the liver and 3 angiomyolipomas. The initiation time of enhancement in various lesions and enhancement duration after administration of contrast agent were compared.Vascular findings in lesions were classified as peripheral enhancement, homogenous enhancement, mosaic enhancement and no enhancement depending on microbubble signals in the lesion relative to the liver parenchyma.RESULTS: The initiation time of enhancement in hemangioma (48±12 s) was significantly later compared to other lesions (P<0.05). The enhancement duration of malignancies (69±33 s in primary liver cancer, 61±23 s in metastasis) was significantly shorter compared to benign lesions (P<0.05).Intranodular enhancement appearing at arterial phase and decreasing at portal venous phase was considered characteristic for malignancy. Intranodular enhancement did not appear earlier than the liver parenchyma, and peripheral enhancement pattern was regarded as positive findings for hemangioma. Intranodular enhancement appeared in the arterial phase, and homogenous enhancement pattern sustained in the whole portal venous phase were regarded as positive findings for focal nodular hyperplasia. No microbubble signals appeared in two inflammatory pseudotumors of the liver.CONCLUSION: C-cube gray scale sonography can demonstrate dynamic intranodular enhancement in various focal hepatic lesions. The information provided by this methodology may be useful in the differential diagnosis of hepatic lesions.Wen-PingWang HongDing QingQi FengMao Zhi-ZhangXu MasatoshiKudo 2003World Journal of Gastroenterology2003,9,8:8
2Mining spatiotemporal patterns of urban dwellers from taxi trajectory data显示文摘随 locationaware 技术的普遍采纳,获得个人的长顺序、巨大、高精确性的空间与时间的轨道数据在各种各样的地理研究变得日益普及。出租车的轨道数据,大多数之一广泛地使用了内部城市的旅行模式,关于两道路网络交通和旅客的旅行行为包含富有的信息。如此的数据能被用来象城市的空间结构的宏系统一样学习个人的显微镜的活动模式。这份报纸在为采矿从使 GPS 能的出租车和他们的应用获得的轨道上集中城市的变换模式。一条新奇途径被建议与很多点地点从出租车轨道数据集发现家庭旅行的空间与时间的模式。途径包含三关键步:,识别从 OD 的统计的阀值价值发现潜在地有意义的地方的基于城市的交通格子的出租车起源目的地( OD )的空间聚类聚类提取城市的工作住房结构,并且分析结果到的可视化理解空间分发和揭示城市的结构和暗示家庭变换行为的时间的趋势。有在上海的出租车轨道数据集的案例研究,中国被介绍表明并且评估建议方法。FengMAO Minhe JI Ting LIU 2016Frontiers of Earth Science2016,10,2:7
3Investigation of beetle species that carry the pine wood nematode,Bursaphelenchus xylophilus(Steiner and Buhrer)Nickle,in China显示文摘In order to found new carriers of pine wood nematode(PWN),Bursaphelenchus xylophilus,beetles were collected from pine wilt disease-affected areas in six provinces in China.A total of 8830 beetles of 29 species was collected and examined to determine whether they were PWN carriers.Eight species were identified as carriers.Results included the first worldwide report of Monochamus uigromaculatus,Semanotus siuoauster,and Uraecha angusta being carriers of PWN,and the first report from China of A rhopalus rusticus carrying PWN.Monochamus alternatus was commonly collected in all six provinces and was the dominant species in four inland affected areas and A.rusticus was dominant in two coastal affected areas.The species varied between different neighboring regions in the same province.The distribution of the same species varied considerably over different regions.Yang Wang Fengmao Chen Lichao Wang Min Li 2021Journal of Forestry Research2021,32,4:6
4Colonization of Bacillus cereus NJSZ-13,a species with nematicidal activity in Masson pine(Pinus massoniana Lamb.)显示文摘Bacillus cereus NJSZ-13,an endophytic bacterium with nematicidal activity,was isolated from stems of healthy Pinus elliottii Engelm.Colonization of P.massoniana Lamb.by endophytic B.cereus was studied using scanning electron microscopy and confocal laser scanning microscopy.After the plasmid p GFP78 containing the green fluorescent protein(GFP)gene was transformed into the NJSZ-13 strain,the NJSZ-13:gfp showed the same nematicidal activity and growth curve as the wild-type strain,and the plasmid p GFP78 was stably maintained in strain NJSZ-13 for at least 96 h of bacterial cultivation on medium without antibiotics.After inoculation into Masson pine roots,colonization of the NJSZ-13:gfp strain in plant roots and stems was visualized using confocal laser scanning and the strain was enumerated in inoculated roots and stems.These results suggest that NJSZ-13:gfp is an efficient colonizer of Masson pine and can transfer vertically from roots to stems.Liangliang Li Jiajin Tan Fengmao Chen Dejun Hao 2020Journal of Forestry Research2020,31,3:4
5Resistance index in differential diagnosis of liver lesions by color doppler ultrasonography显示文摘AIM: To investigate the specific value of resistance index (RI) in color Doppler ultrasonography in the diagnosis of focal hepatic lesions. METHODS: Eight hundred patients with 893 hepatic solid lesions were studied with color Doppler flow imagimg (CDFI) and pulsed Doppler, induding 644 malignant cases (596 primary malignant liver tumors, and 48 metastatic liver tumors), 156 benign cases. All were confirmed by operation and pathology. RESULTS: The detection rate of arterial flow in malignant tumors was 92%, and 52% in benign lesions. Doppler spectrum analysis showed that the resistance index in primary malignant tumors was 0.75±0.12, 0.73±0.09 in metastatic tumors, and was below 0.6 in benign lesions. The difference was significant (P<0.001). This difference was related with its histopathologic structure. CONCLUSION: The arterial flow with RI≥0.6 identified by CDFI within the liver lesion can be regarded as a criterion of malignant tumors, RI<0.6 can be regarded as benign disorders. RI is useful in differential diagnosis of liver neoplasms.YanWang Wen-PingWang HongDing Bei-JianHuang FengMao Zhi-ZhangXu 2004World Journal of Gastroenterology2004,10,7:3
6Lasiodiplodia pseudotheobromae causes stem canker of Chinese hackberry in China显示文摘Chinese hackberry(Celtis sinensis Pers.)is an adaptable species widely growing in southern China.The symptoms of canker on stems of seedlings were discovered mid-July 2017 in Shuyang,Jiangsu Province.The diseased portions of the stems were dark brown due to discoloured xylem.Some seedlings showed symptoms of wilting,leaf fall,twig dieback,and tissue discolouration.The outbreak period was concentrated in July and August,suggesting that the disease spread during summer months.Possible fungal causal agents were isolated from naturally infected canker tissue and discoloured xylem.The isolate from xylem tissue with a high frequency(>50%)was named Ls7 type.Pathogenicity tests were carried out on 4-yearold seedlings.The symptoms of canker began to develop 20 days after inoculation with Ls7 isolate and by day 35,there were dark,enlarged longitudinal lesions.A phylogenetic tree of the isolate was developed using the internal transcribed spacer,elongation factor-1α(tef1-α),β-tubulin gene(TUB)and RNA polymerase II subunit primer genes(RPB2).Based on morphological features and phylogenetic information,the pathogen was identifi ed as Lasiodiplodia pseudotheobromae.This is the fi rst report of L.pseudotheobromae causing canker on Chinese hackberry stems in China.Lu Liang Huan Li Lifeng Zhou Fengmao Chen 2020Journal of Forestry Research2020,31,6:3
7New insights into the life history of Monochamus saltuarius(Cerambycidae:Coleoptera)can enhance surveillance strategies for pine wilt disease显示文摘Pine wilt disease was first discovered in Dongtang town,Liaoning Province,China,in 2017.Monochamus saltuarius Gebler is a new vector of pinewood nematode and the only known vector in Liaoning Province.The biology of this pest has not been reported thus far;therefore,it is necessary to study its life history.During 2018 and 2019,we collected 138 and 491 adult M.saltuarius beetles,respectively,to analyze their eclosion from larva to adult stage.In mid-March,overwintering larvae began to feed(on xylem)and seek nutrition in preparation for pupation and eclosion.The adults began to appear in mid-April,and the population reached its peak in late May.The life span of the adults was 28-76 days.After approximately 1 week of supplemental nutrition(feeding on twigs),adults began to mate and lay eggs.The egg stage of M.saltuarius lasted 4-8 days.The larvae in Dongtang town have 4 instars and overwinter in tunnels as 3rd-4th instars.The 1st-instar stage lasted 3-9 days,the 2nd-instar stage lasted 11-23 days,the 3rd-instar stage lasted 30-130 days,and the 4th-instar stage lasted 44-180 days.The pupal stage lasted 7-12 days,and the life span of the adults was 28-76 days.In this study we systematically monitored the life history of M.saltuarius for the first time.Our objective was to lay a foundation for improving control of this pinewood nematode vector.Min Li Yun Dai Yang Wang Lichao Wang Shouhui Sun Fengmao Chen 2021Journal of Forestry Research2021,32,6:2
8GC-ECD analysis of S-metolachlor (Dual Gold) in cotton plant and soil in trial field显示文摘Pengying Cao Fengmao Liu Suli Wang 2008Environ Monit Assess2008,143,:1
9Dissipation and Residue of S-metolachlor in Maize and Soil显示文摘Pengying Cao Xiangyun Wang Fengmao Liu 2008Bull Environ Contam Toxicol2008,80,:1
10Stereoselective dissipation of epoxiconazole in grape ( Vitis vinifera cv . Kyoho) and soil under field conditions显示文摘Hongwu Liang Jing Qiu Li Li Wei Li Zhiqiang Zhou Fengmao Liu Lihong Qiu 2012Chemosphere2012,,8:1
11Dissipation and Residue of Myelobutanil in Lyehee显示文摘Yanping Liu Haibin Sun Fengmao Liu 2012Bulletin of Environmen- tal Contamination and Toxicology2012,88,6:1
12Determination of Organophosphorus Pesticides in Soybean Oil, Peanut Oil and Sesame Oil by Low-Temperature Extraction and GC-FPD显示文摘Li Li Zhiqiang Zhou Canping Pan Chuanfan Qian Shuren Jiang Fengmao Liu 0,,:1
13Dissipation and Residue of S-metolachlor in Maize and Soil显示文摘Pengying Can Xiangyun Wang Fengmao Liu 2008Bull Environ Contain Toxicol2008,80,:1
14Dissipation and residue of dimethomorph in pepper and soil under field conditions显示文摘Hongwu Liang Li Li Wei Li Yijun Wu Zhiqiang Zhou Fengmao Liu 2011Ecotoxicology and Environmental Safety2011,,5:1
15Dissipation of pyraclostrobin and its metabolite BF-500-3 in maize under field conditions显示文摘Xiangwei you Congyun liu Fengmao liu Yanping liu Jiannan dong 2012Ecotoxicology and Environmental Safety2012,,:1
16Effects of sprayers and nozzles on spray drift and terminal residues of imidacloprid on wheat 显示文摘Zhao Huiyu Xie Chert Liu Fengmao 2014Crop Protection2014,60,:1
17Simultaneous Determination of Aflatoxins and Ochratoxin A in Bee Pollen by Low-Temperature Fat Precipitation and Immunoaffinity Column Cleanup Coupled with LC-MS/MS显示文摘XiaoFeng Xue Jonathan Nimal Selvaraj Liuwei Zhao Haimin Dong Fengmao Liu Yang Liu Yi Li 2014Food Analytical Methods2014,,3:1
18Dissipation and residue of S-metolachlor in maize and soil显示文摘CAO Pengying WANG Xiangyun LIU Fengmao 2008Bull Environ Contain Toxicol2008,80,5:1
19GC-ECD analysis of S-metolachlor (Dual Gold) in cotton plant and soil in trial field显示文摘CAO Pengying LIU Fengmao WANG Suli 2008Environ Monit Assess2008,143,13:1
20Dissipation and residue of dimethomorph in pepper and soil under field conditions显示文摘Hongwu Liang Li Li Wei Li Yijun Wu Zhiqiang Zhou Fengmao Liu 2011Ecotoxicology and Environmental Safety2011,,5:1
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