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利用受驱动Jaynes-Cummings模型制备压缩位移福克态
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作者 郑乃清 《宁德师范学院学报(自然科学版)》 2000年第3期205-208,共4页
提出一个方案以制备一个腔场的压缩位移福克态 。
关键词 压缩位移福克态 受驱动Jaynes-Cummings模型 腔场
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受驱动光学系统腔场噪声的内腔多光子吸收减低 被引量:1
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作者 杨国健 汪凯戈 孙寅官 《光学学报》 EI CAS CSCD 北大核心 1995年第3期301-304,共4页
在受驱动光学系统中增设内腔多光子吸收元件是抑制腔场噪声的有效手段。为在好腔条件(k《γ∥,γ⊥)下获得低噪声强光场,应选用高吸收非线性元件。若所需场强较弱,在主动腔状态应选用非线性吸收最低的双光子吸收体,在被动腔状态... 在受驱动光学系统中增设内腔多光子吸收元件是抑制腔场噪声的有效手段。为在好腔条件(k《γ∥,γ⊥)下获得低噪声强光场,应选用高吸收非线性元件。若所需场强较弱,在主动腔状态应选用非线性吸收最低的双光子吸收体,在被动腔状态则应让系统工作在无吸收状态。 展开更多
关键词 光子吸收 受驱动 光学系统 腔场噪声 内腔
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良腔情况吸收与色散混合受驱动光学系统多光子过程压缩效应
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作者 张林 林仁明 《物理学报》 SCIE EI CAS CSCD 北大核心 1990年第11期1714-1720,共7页
本文讨论吸收与色散混合型多光子受驱动光学系统在良腔情况下场的压缩效应,得出在一定条件下,对于单光子过程,场量正交分量之一A_1在混合型比在纯吸收型具有更佳的压缩效应,而对于双光子过程,场量另一正交分量A_2也可能出现压缩效应。
关键词 多光子 受驱动 光学系统 压缩效应
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煤矿架空乘人装置驱动钢丝绳的受力计算和验算 被引量:1
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作者 张协申 毕晓阳 张铭 《特种设备安全技术》 2011年第1期4-6,共3页
本文为架空乘人装置驱动系统的爱力分析、计算及验算提供了理论公式;为架空乘人装置的制造、使用单位提供了理论计算依据。
关键词 乘人装置驱动系统力分析计算验算
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Sixteen Years of Trastuzumab Use: Complete Response in Lung, Bone, and CNS Metastasis from Breast Cancer
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作者 Maria de Lourdes Lopes de Oliveira Oliveira and Gabriela Passos 《Journal of Pharmacy and Pharmacology》 2017年第5期270-274,共5页
Although metastatic breast cancer is considered as an incurable disease, various biological drivers influence the outcomes. The use of trastuzumab in patients overexpressing HER(human epidermal growth factor recepto... Although metastatic breast cancer is considered as an incurable disease, various biological drivers influence the outcomes. The use of trastuzumab in patients overexpressing HER(human epidermal growth factor receptor 2)-2 increases long-term survival even in those patients who developed brain metastasis. Nevertheless, special attention must be paid to the risk of cardiotoxicity. We report the case of a young woman with HER-2-positive breast cancer with bone and lung disease who developed brain metastasis during treatment with trastuzumab. The treatment has been continued and she is alive and in complete remission after 16 years. 展开更多
关键词 TRASTUZUMAB long-term survival brain metastasis complete response breast cancer.
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Damage or Recovery?Assessing Ecological Land Change and Its Driving Factors:A Case of the Yangtze River Economic Belt,China 被引量:6
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作者 ZHOU Ting QI Jialing +1 位作者 XU Zhihan ZHOU De 《Journal of Resources and Ecology》 CSCD 2021年第2期175-191,共17页
Ecological land can provide people with ecological products and ecological services;and it plays an important role in maintaining the health and safety of the ecosystem.With China’s rapid urbanization development,eco... Ecological land can provide people with ecological products and ecological services;and it plays an important role in maintaining the health and safety of the ecosystem.With China’s rapid urbanization development,ecological land has been invaded in large quantities,and damaged seriously,even resulting in loses of its ecological function.Based on land use data from 1995 to 2015,our study explores the spatial and temporal evolution of the damage or recovery of ecological land in the Yangtze River Economic Belt(YREB).Two spatial models,geographic detector and geographic weighted regression(GWR),were employed to assess the global effects and the local effects of the driving factors for ecological land change,respectively.Our study divided the ecological land change into five types based on the degree of change as severe damage,slight damage,unchanged,slight recovery,and obvious recovery.The results show that from 1995 to 2015,the total area of ecological land in the YREB increased initially and then decreased,but the overall trend was decreasing.The total damaged area was larger than the recovered area.Arable land and woodland both showed downward trends.In terms of ecological land change over the past 20 years,the type of unchanged had the largest area,followed by slight damage and slight recovery.Our study further revealed that ecological land change was the net result of the interaction of many factors,and the explanatory power between any two driving factors was greater than that of any individual driving factor.In addition,driving factors have different impacts on ecological land change in different geographical locations.This knowledge should help land managers and policymakers to be better informed when developing pertinent land use policies at the regional and local levels.The lessons can also be extended to other regions for better management of their ecological land for sustainable use. 展开更多
关键词 ecological land DAMAGE RECOVERY driving factor geographical detector geographically weighted regression
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