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14篇 您的检索式:作者名="D.Fang"
    题名 作者 年代 出处 被引量
1晕核^6He(25MeV/u)的单、双中子转移截面测量显示文摘实验测量了 25MeV/u的6He+9Be反应中的单、双中子转移微分截面. 利用反应耦合道模型初步分析了实验数据, 计算大体重现截面值. 转移反应对末态有相当的选择性, 并且双中子转移截面主要来自到基态的一步过程. 后角度截面的上升可能与连续态的耦合有关.叶沿林 庞丹阳 葛愉成 江栋兴 郑涛 王全进 李智焕 李湘庆 艾颖 张高龙 王佳 陈志强 胡青元 A.Ozawa Y.Yamaguchi C.Wu R.Kanungo D.Fang I.Tanihata 2005原子核物理评论2005,22,1:2
2晕核^6He(25MeV/u)在^9Be上的弹性散射研究显示文摘分析了北京大学核物理实验小组在日本RIKEN实验室完成的 25MeV/u6He和9Be的弹性散射实验数据, 得到了弹性散射微分截面角分布. 利用双折叠模型, 并通过拟合弹性散射微分截面得到了此弹靶体系在此能量下的弹性散射光学势.庞丹阳 叶沿林 江栋兴 郑涛 王全进 李智焕 李湘庆 陈志强 胡青元 张高龙 王佳 A.Ozawa Y.Yamaguchi C.Wu R.Kanungo D.Fang I.Tanihata 2005原子核物理评论2005,22,1:2
3晕核~6He(25MeV/u)在~9Be上的破裂反应显示文摘25MeV/u6He+9Be反应的实验中利用多个探测器望远镜对反应产物进行了测量, 对实验中各个角度测量到的4He进行观察, 将其中两个有高能峰成分的探测器划分成三部分, 得到不同角度4He的单举能谱和破裂产生4He的微分截面.王佳 叶沿林 江栋兴 郑涛 王全进 李智焕 李湘庆 张高龙 庞丹阳 吴翠娥 陈志强 胡青元 A.Ozawa Y.Yamaguchi R.Kanungo D.Fang I.Tanihata 2005原子核物理评论2005,22,1:1
4Measurement of One— and Two—Neutron Transfers in Reaction of ^6He+^9Be at 25MeV/u显示文摘The cross sections one-and two-neutron transfers induced by 6He at 25MeV/u on a^9Be target were measured in RIKEN.Clear identification of the recoiled Be isotopes was achieved.In total five 11Be and 371 ^10Be events,the corresponding two-and one-neutron transfers were obtained and analysed for transfer reaction cross sections.The results are useful to determine the spectroscopic factors of the internal halo structure of the 6He nucleus.葛愉成 叶沿林 郑涛 王全进 李智焕 李湘庆 江栋兴 A.Ozawa Y.Yamaguchi C.Wu R.Kanungo D.Fang I.Tanihata 2003Chinese Physics Letters2003,20,7:1
5Solvent inkjet printing process for the fabrication of polymer solar cells显示文摘Y.Sun Y.Zhang Q.Liang Y.Zhang H.Chi Y.Shi D.Fang 0,,30:1
625MeV/u^6 He+~9Be反应的轻粒子发射(英文)显示文摘在 2 5MeV u6He与9Be靶的反应中 ,10 7°和 12 8°处明显地观察到了轻粒子发射 .粒子能谱形状与平衡热源蒸发相一致 ,分析得到热源的核温度为完全熔合条件下的 5 6MeV或非完全熔合条件下的 5 2MeV .实验发现发射氚的数量特别大 ,这可能与目前广泛研究的6He的集团结构和同位旋效应有关 .张高龙 叶沿林 江栋兴 郑涛 王全进 李智焕 李湘庆 陈志强 胡青元 庞丹阳 王佳 A.Ozawa Y.Yamaguchi C.Wu R.Kanungo D.Fang I.Tanihata 2004高能物理与核物理2004,28,5:0
7^6He中t+t结构的实验研究显示文摘在25MeV/u6He轰击9Be靶的反应中,用探测器望远镜测得氚碎片,得到了5个角度的能谱,经过仔细的分析取得了高能直接破碎成分的角分布.利用Setber模型进行了破碎反应的理论计算,证实了实验中高能成分的t来自于6He的直接破碎反应.利用Fermi破碎模型计算了6He中各破碎反应道基于相空间的百分比产额,进而估算出6He初态中t+t结构的概率约占1/3,而4He核心加价中子的组态约占2/3.张高龙 叶沿林 江栋兴 郑涛 王全进 李智焕 李湘庆 吴翠娥 陈志强 胡青元 庞丹阳 王佳 A.Ozawa Y.Yamaguchi R.Kanungo D.Fang I.Tanihata 2005高能物理与核物理2005,29,10:0
8Quasielastic Scattering of the Halo Nucleus ^6He at 25 MeV/u from a ^9Be Target显示文摘The differential cross sections of quasielastic scattering of a 25 MeV/u ^6He from ^9Be target have been measured.The double-folding model approach is applied to generate the real part of the optical potential. The imaginary potential parameters as well as some of the real potential parameters are studied in comparison with the experimental data. The effect of the unstable nucleus is discussed.庞丹阳 叶沿林 江栋兴 郑涛 王全进 李智焕 李湘庆 葛愉成 吴翠娥 张高龙 胡青元 王佳 A.Ozawa Y.Yamaguchi R.Kanungo D.Fang I.Tanihata 2004Chinese Physics Letters2004,21,11:0
925MeV/u^6He在~9Be靶上引起的双中子转移显示文摘报道了经仔细设计的 15 0MeV6He +9Be实验 ,并在质心系大角度处测量 10 Be和 11Be同位素产物的实验数据 .鉴别得到相应于单中子转移的 371个 10 Be事件 ,同时观测到了相应于双中子转移的 5个 11Be事件 .由此得到相应微分截面分别为 (0 .11± 0 .0 2 )mb sr(θcm≈ 137.4°)和 (1.0± 0 .7)μb sr(θcm≈ 133.4°) ,结果表明在所研究的反应体系中 ,单中子转移截面要比双中子转移截面约大10 0倍 .在 6He由 5He n和α 2n组成的集团模型下 ,利用零力程扭曲波玻恩近似 (DWBA)的计算程序 ,在数量级上重现了单。葛愉成 叶沿林 郑涛 王全进 李智焕 李湘庆 江栋兴 A.Ozawa Y.Yamaguchi C.Wu R.Kanungo D.Fang I.Tanihata 2004高能物理与核物理2004,28,3:0
10Stability and transferability assessment of the cotton fiber strength QTL qFS-c7-1 on chromosome A07显示文摘Previously we identified a major cotton fiber strength QTL(qFS-c7-1)on chromosome A07 using a multiparent advanced generation intercross(MAGIC)population.To assess the stability and transferability of this QTL and its utility in cotton breeding,we made ten new populations.These populations were developed from crosses between MAGIC recombinant inbred lines,or between cotton cultivars that are different from the MAGIC parents.A total of 2801 F_(2) plants were grown and their fiber quality traits were measured.We also selected a subset of F_(3) seeds from two populations,and grew F_(3) progeny plots to further evaluate the stability of this QTL.Our results showed that the peak of qFS-c7-1 is at 70–72 Mb region.This QTL had a major effect on fiber strength explaining 21.9%phenotypic variance.Its effect on other fiber quality attributes such as micronaire,short fiber content,length and uniformity varied between populations,and no effect on fiber elongation was observed.The QTL effects were stable in the populations analyzed,and in different generations of the same population.The SSR and SNP markers near and within the QTL peak reported herein will assist selecting superior fiber quality traits in breeding,with a recommendation that the parental cotton lines should be analyzed using the seven DNA markers within the QTL peak before fully implementing marker assisted selection in a cotton breeding program.David D.Fang Linghe Zeng Gregory N.Thyssen Christopher D.Delhom Efrem Bechere Don C.Jones Ping Li 2021The Crop Journal2021,9,2:0
11Measurement of the Breakup Cross Sections in ^6He+^9Be Reaction at 25 MeV/Nucleon显示文摘The breakup reaction cross sections were measured for the reaction of^6He at 25 MeV/nucleon from ^9Be target with intensity of 10^5 pps. By fitting the energy spectra of breakup α particles with Gaussian functions, the angular distribution of differential cross sections in the laboratory system has been extracted and compared with the Serber model calculations. The good agreement between the calculation and the experimental data favours a dominant configuration of the ^4He core plus valence neutrons for the structure of^6He.王佳 叶沿林 江栋兴 张高龙 庞丹阳 李智焕 郑涛 李湘庆 王全进 胡青元 吴翠娥 A.Ozawa Y.Yamaguchi R.Kanungo D.Fang I.Tanihata 2005Chinese Physics Letters2005,22,6:0
1225MeV/u^6He在9^Be靶上的弹性转移反应研究显示文摘报告了25MeV/u6He在9Be靶上的弹性散射和弹性转移的实验结果.用光学模型和一阶DWBA 的方法计算了弹性散射和3He集团转移的截面,计算结果和实验测量基本一致.计算表明3He在9Be中 的谱幅度应该明显大于壳模型的理论计算值0.70.庞丹阳 叶沿林 江栋兴 郑涛 李智焕 李湘庆 葛愉成 吴翠娥 陈志强 华辉 张高龙 王佳 楼建玲 卢飞 范凤英 A.Ozawa Y.Yamaguchi R.Kanungo D.Fang I.Tanihata 2006高能物理与核物理2006,30,1:0
13Identification of cancer stem cells provides novel tumor models for drug discovery显示文摘Cancer stem cells(CSCs)have received considerable attention from the research community since they were first reported in human acute myeloid leukemia 15 years ago.Accumulating evidence suggests that CSCs are responsible for tumor initiation and progression,drug resistance,and metastasis in both liquid and solid tumors.These findings lead to the development of novel compounds targeting CSC populations that is becoming increasingly important for eradicating CSCs in heterogeneous tumor masses and to cure the cancer.Since 2003,we have participated in CSC studies and encountered crucial early events in the field.This article reviews the history of CSC biology,clarifies the term and its definition,and further addresses the issue of how to utilize CSCs in therapeutic target discovery and drug development based on our substantial experience.Douglas D.Fang Danyi Wen Yajun Xu 2012Frontiers of Medicine2012,6,2:0
14Combined gemcitabine and CHK1 inhibitor treatment induces apoptosis resistance in cancer stem cell-like cells enriched with tumor spheroids from a non-small cell lung cancer cell line显示文摘Evaluating the effects of novel drugs on appropriate tumor models has become crucial for developing more effective therapies that target highly tumorigenic and drug-resistant cancer stem cell(CSC)populations.In this study,we demonstrate that a subset of cancer cells with CSC properties may be enriched into tumor spheroids under stem cell conditions from a non-small cell lung cancer cell line.Treating these CSC-like cells with gemcitabine alone and a combination of gemcitabine and the novel CHK1 inhibitor PF-00477736 revealed that PF-00477736 enhances the anti-proliferative effect of gemcitabine against both the parental and the CSC-like cell populations.However,the CSC-like cells exhibited resistance to gemcitabine-induced apoptosis.Collectively,the spheroid-forming CSC-like cells may serve as a model system for understanding the mechanism underlying the drug resistance of CSCs and for guiding the development of better therapies that can inhibit tumor growth and eradicate CSCs.Douglas D.Fang Joan Cao Jitesh P.Jani Konstantinos Tsaparikos Alessandra Blasina Jill Kornmann Maruja E.Lira Jianying Wang Zuzana Jirout Justin Bingham Zhou Zhu Yin Gu Gerrit Los Zdenek Hostomsky Todd VanArsdale 2013Frontiers of Medicine2013,7,4:0
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