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Molecular and Crystal Structure of 1-(2-chloro)-Benzoyl-3-(4-methylphenyl) Thiourea

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Chinese journal of Structural Chemistry 2000年第2期19卷 99-102页

作者： LI Shu jin * ZHANG De Chun cao Yan GE Li Qin (Department of Chemistry, Suzhou University, Suzhou, 215006) YU Kai Bei (Chengdu Institute of Organic Chemistry, the Chinese Academy of Sciences, Chengdu 610041) 苏州大学江苏苏州 2 1 50 0 6 中科院成都有机化学所四川成都 6 1 0 0 41

The title compound (C 15 H 13 ClN 2OS, M r =304.9) crystallizes in the triclinic system space group P1, a=7.984(2), b=9.712(1), c=11.140(1),α=97.58(1),β=110.55(1), γ=106.14(1)°, V=751.2(2) 3 , Z=2, D c =1.347g/cm 3, μ (Mo Kα )=0.389cm -1 , F (000)=316. The final R and wR are 0.0349 and 0 0894 for 2008 observed reflections (I≥2σ(I )), respectively. In the molecule of the title compound , there is an intramolecular hydrogen bond between the amide N and benzyl O atoms , forming a six membered ring in the central part of molecule. In the crystal, molecules are connected into infinite zigzag chains by N-H…S (- x, -y+1, -z ) and weak interaction N-H…O ( -x+1,-y+1,-z+1 ) along the direction 〔101〕(a+c). The weak intermolecular interaction Cl…Cl (- x, -y, -z ) links the chains into a layer. Between the resulting layers there are mainly van der Waals interactions.

关键词： benzoylphenyl thiourea molecular structure crystal structure

No expenditure difference among patients with liver cancer at stageⅠ-ⅣV:Findings from a multicenter cross-sectional study in China

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Chinese journal of Cancer Research 2020年第4期32卷 516-529页

作者： Haike Lei Lin Lei jufang Shi Yongzhong Wu Ling Liang Huiyao Huang Mei He Fangzhou Bai Maomao cao Hui Qiu Yuting Wang Chengcheng Liu jia Du Hong Wang Yan Zhang Mengdi cao ji Peng Ni Li Chunfeng Qu Min Dai Wanqing Chen jie He Office of Chongqing Cancer Prevention and Treatment Chongqing University Cancer HospitalChongqing 400030China Department of Cancer Control Shenzhen Center for Chronic Disease ControlShenzhen 518020China Office of Cancer Screening National Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021China State Key Lab of Molecular Oncology/Immunology Department National Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021China Department of Thoracic Surgery National Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021China

Objective:The number of liver cancer patients in China accounts for more than half of the ***,China currently lacks national,multicenter economic burden data,and meanwhile,measuring the differences among different subgroups will be informative to formulate corresponding policies in liver cancer ***,the aim of the study was to measure the economic burden of liver cancer by various ***:A hospital-based,multicenter and cross-sectional survey was conducted during 2012・2014,covering 39 hospitals and 21 project sites in 13 provinces across *** questionnaire covers clinical information,sociology,expenditure,and related *** expenditure data were reported in Chinese Yuan(CNY)using 2014 ***:A total of 2,223 liver cancer patients were enrolled,of whom 59.61%were late-stage cases(III-IV),and 53.8%were hepatocellular *** average total expenditure per liver cancer patient was estimated as 53,220 CNY,including 48,612 CNY of medical expenditures(91.3%)and 4,608 CNY of non-medical expenditures(8.7%).The average total expenditures in stage I,H,m and stage IV were 52,817 CNY,50,877 CNY,50,678 CNY and 54,089 CNY(P>0.05),***-medical expenditures including additional meals,additional nutrition care,transportation,accommodation and hired informal nursing were 1,453 CNY,839 CNY,946 CNY,679 CNY and 200 CNY,*** one-year out-of-pocket expenditure of a newly diagnosed patient was 24,953 CNY,and 77.2%of the patients suffered an unmanageable financial *** analysis showed that overall expenditure differed in almost all subgroups(P<0.05),except for sex,clinical stage,and pathologic ***:There was no difference in treatment expenditure for liver cancer patients at different clinical stages,which suggests that maintaining efforts on treatment efficacy improvement is important but not *** fiirtherly reduce the overall economic burden from liver cancer,more effort should be

关键词： Liver cancer medical expenditure non-medical expenditure economic burden

Dispersion-limited versus power-limited terahertz communication links using solid core subwavelength dielectric fibers

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Photonics Research 2020年第11期8卷 1757-1775页

作者： Kathirvel Nallappan Yang cao Guofu Xu Hichem Guerboukha ChaheNerguizian Maksim Skorobogatiy Department of Electrical Engineering Polytechnique MontrealMontrealQuebec H3T1J4Canada Department of Engineering Physics Polytechnique MontrealMontrealQuebec H3T1J4Canada School of Engineering Brown UniversityProvidenceRhode Island 02912USA

Terahertz(THz)band(0.1–10 THz)is the next frontier for ultra-high-speed communication ***,most of communications research in this spectral range is focused on wireless systems,while waveguide/fiber-based links have been less *** free space communications have several advantages such as convenience in mobility for the end user,as well as easier multi-device interconnectivity in simple environments,fiber-based communications provide superior performance in certain short-range communication applications such as multi-device connectivity in complex geometrical environments(ex.,intra-vehicle connectivity)and secure communications with low probability of eavesdropping,as well as secure signal delivery to hard-to-reach or highly protected *** this work,we present an in-depth experimental and numerical study of the short-range THz communications links that use subwavelength dielectric fibers for information transmission and define the main challenges and trade-offs in the link ***,we use air or foam-cladded polypropylene-core subwavelength dielectric THz fibers of various diameters(0.57–1.75 mm)to study link performance as a function of the link length of up to∼10 m,and data bit rates of up to 6 Gbps at the carrier frequency of 128 GHz(2.34 mm wavelength).We find that depending on the fiber diameter,the quality of the transmitted signal is mostly limited either by the modal propagation loss or by the fiber velocity dispersion(GVD).An error-free transmission over 10 m is achieved for the bit rate of 4 Gbps using the fiber of smaller 0.57 mm ***,since the fields of subwavelength fibers are weakly confined and extend deep into the air cladding,we study the modal field extent outside of the fiber core,as well as fiber bending ***,the power budget of the rod-in-air subwavelength THz fiber-based links is compared to that of free space communication links,and we demonstrate that fiber links o

关键词： communication fiber power

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实虚部间关联泵噪声对激光动力学性质的影响

华中科技大学学报（自然科学版） 2007年第7期35卷 45-47页

作者：张莉曹力中南民族大学电子信息工程学院湖北武汉430074 华中科技大学激光技术国家重点实验室湖北武汉430074

在损失模型中引入平方色泵噪声,并考虑泵噪声实虚部间关联λp,推导了一个新的含有λp的光强朗之万方程.用线性化近似的方法从理论上对具有实虚部间关联的泵噪声驱动的单模激光的动力学性质进行分析,计算了光强的关联函数、功率谱及输出... 详细信息

在损失模型中引入平方色泵噪声,并考虑泵噪声实虚部间关联λp,推导了一个新的含有λp的光强朗之万方程.用线性化近似的方法从理论上对具有实虚部间关联的泵噪声驱动的单模激光的动力学性质进行分析,计算了光强的关联函数、功率谱及输出功率S.讨论了泵噪声实虚部间的关联强度λp、泵噪声强度p′、净增益系数a和关联时间τ对S的影响,发现λp对光强的输出功率影响显著.当λp=±0.5^(1/2)时,输出功率S最大,|λp|=1或λp=0时,输出功率S最小.

关键词：单模激光平方噪声关联函数输出功率

Pregnancies after Transfer of Vitrified Biopsied Blastocysts

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journal of Reproduction and Contraception 2013年第4期24卷 215-219页

作者： Yan HAO Ping ZHOU Zhi-guo ZHANG Yun-xia cao Centre for Reproductive Medicine Department of Obstetrics and Gynecologythe First Affiliated Hospital of Anhui Medical University

Objective To show two cases describing the successful pregnancies after transplan- tation of vitrified biopsied embryos after preimplantation genetic diagnosis （PGD）. Methods PGD by day 3 embryo biopsy was performed. Excess embryos were frozen using vitrification method. Four months later, the patient elected to undergo a frozen- thawed embryo transfer （FET） cycle. Results These two patients became pregnant and both of them delivered healthy PGD baby respectively. Conclusion This report shows that vitrification is an efficient and practical method for embryo cryopreservation during PGD. Frozen-thawed blastocysts that do survive obtained from vitrified D3 biopsied embryos are able to implant.

关键词： vitrification biopsy preimplantation genetic diagnosis (PGD)

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土石坝心墙水力劈裂的数值研究进展

岩石力学与工程学报 2009年第A01期28卷 3146-3149页

作者：曹雪山河海大学交通学院江苏南京210098

总结国内外心墙水力劈裂的数值研究发展,主要成果体现在:(1)数值分析法有总应力分析法和饱和土固结的有效应力分析法两种,而非饱和土固结有效应力分析法是一种新方法;(2)利用数值分析法计算结果判断心墙水力劈裂发生条件时,总应力分析... 详细信息

总结国内外心墙水力劈裂的数值研究发展,主要成果体现在:(1)数值分析法有总应力分析法和饱和土固结的有效应力分析法两种,而非饱和土固结有效应力分析法是一种新方法;(2)利用数值分析法计算结果判断心墙水力劈裂发生条件时,总应力分析法判别标准更合适;(3)数值分析法的发展,大大促进了心墙水力劈裂发生影响因素的研究。

关键词：水利工程水力劈裂数值分析法判别标准影响因素

任意形状目标的多分辨时域(MRTD)散射特性分析

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南京航空航天大学学报 2006年第6期38卷 655-659页

作者：曹群生南京航空航天大学信息科学与技术学院南京210016

应用三维多分辨时域(Three-dimensionalmu ltiresolution time-dom ain,3D-M RTD)方法研究一些具有任意形状目标的雷达散射截面(R adar cross-section,RCS),其中M RTD中的电磁场量用小波函数Battle-Lemarié的三次样条尺度函数展开。推导出了严格的M RTD方法的场的时空迭代关系式及M RTD方法的三维散射模型,其中包括基于最近邻网格近似的表面等价电流的计算、散射场的近-远场变换和基于离散的傅里叶(Fourier)变换的RCS计算式。采用M RTD方法(并采用其适用的近似网格剖分方法)研究了从低频(瑞利和谐振模式)到高频(准光学模式)的几种结构的双-站(Bi-static)RCS模式。与传统的时域有限差分(Finited ifference time-do-main,FDTD)法的结果进行了比较,发现M RTD方法较FDTD方法节省相当的计算空间和时间。

关键词：多分辨时域方法 RCS计算时域有限差分方法

Effect analysis of unilateral deaf adults wearing bone-conduction hearing aids:A case report

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journal of Otology 2024年第4期19卷 207-213页

作者： Chenchen Xiang Yi Wang Xiaozhu cao Weiman Xv jing Liu Nan Li Lumeng Han QIan Wang Fei ji Department of Otolaryngology Head and Neck Surgery Chinese PLA General HospitalBeijingChina National Clinical Research Center for Otolaryngologic Diseases BeijingChina Peking University Third Hospital China Department of Stomatology First Medical CenterChinese PLA General HospitalBeijingChina

The prevalence of unilateral deafness(SSD)or asymmetric hearing loss(AHL)among patients with hearing impairments ranges from 7.2%to 15.0%,indicating a relatively significant ***,these individuals often overlook their hearing loss,resulting in delayed or inadequate *** oversight can lead to a lack of binaural summation and squelch effect,as well as the head shadow effect,which can significantly impact their speech recognition and sound localization abilities,especially in noisy ***,a groundbreaking Sound Bite™Pinyin® Bone Conduction Hearing Aid(HA)device has been has been introduced as a viable alternative to traditional percutaneous stimulation hearing assistance *** innovative device harnesses bone conduction technology to convey sound vibrations directly to the inner ear via the bones of the jaw and skull,effectively bypassing the air conduction pathway that is commonly compromised in individuals with hearing *** report details the evaluation and adjustment process of a HA device worn by a 31-year-old female patient who suffers from a congenital ossicular chain deformity in her right ear,while maintaining normal hearing in her left *** report comprehensively covers the hearing thresholds of the 31-year-old female patient on the day of fitting the hearing aid and one month *** also presents assessments of the hearing aid’s performance through the Abbreviated Profile of Hearing Aid Benefit(APHAB)questionnaire,conducted three days after adjustment,one month later,and one year ***,the report details the evaluation of the patient’s sound localization ability,comparing her performance before and after wearing the hearing aid ***,it includes measurements of her speech recognition ability for monosyllabic words and Yang Yang Ge words,which are specific tests in the Chinese language,conducted two years after the initial fitting of the hearing *** discovery that bone-anchor

关键词： Bone conduction hearing aid Abbreviated profile of hearing aid benefit Speech audiometry

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温态、热态启动中的最佳温度匹配方式探讨

中国电机工程学报 1999年第9期19卷 57-61页

作者：江宁曹祖庆东南大学动力系南京210096

分析了汽轮机启动过程中不同汽温匹配的优缺点，以求找出一种汽轮机启动时较为安全经济的温度匹配方式。通过理论分析、一维差分仿真计算及对现场试验数据的二维有限元计算，证明了在温态及热态启动中的最佳温度匹配是小幅度的负温度匹... 详细信息

分析了汽轮机启动过程中不同汽温匹配的优缺点，以求找出一种汽轮机启动时较为安全经济的温度匹配方式。通过理论分析、一维差分仿真计算及对现场试验数据的二维有限元计算，证明了在温态及热态启动中的最佳温度匹配是小幅度的负温度匹配。这种方式有助于减小启动过程中转子的热应力及寿命损耗、缩短启动时间、克服正温度匹配造成的诸多问题，且不会影响机组的安全性。其存在的缺点可以克服。小幅度负温度匹配是一种切实可行、安全可靠、优点突出的启动方式。

关键词：温度匹配启动热应力汽轮机