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Quantum Optical Squeezing Transform for Generalizing Fractional Fourier Transform

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Communications in Theoretical Physics 2008年第10期50卷 951-954页

作者： HU li-Yun fan hong-Yi Department of Physics Shanghai Jiao Tong University Shanghai 200030 China

By establishing the relation between the optical scaled fractional Fourier transform （FFT） and quantum mechanical squeezing-rotating operator transform, we employ the bipartite entangled state representation of two-mode squeezing operator to extend the scaled FFT to more general cases, such as scaled complex FFT and entangled scaled FFT. The additiyity and eigenmodes are presented in quantum version. The relation between the scaled FFT and squeezing-rotating Wigner operator is studied.

关键词： squeezing transform scaled fractional Fourier transform IOWP technique

The association between the two more common genetic causes of spermatogenic failure:a 7-year retrospective study

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Asian Journal of Andrology 2020年第6期22卷 642-648页

作者： hong-Ge li li-hong fan Bei liu Ye-Qing Qian Min Chen Yi-Xi Sun Min-Yue Dong Women's Hospital School of MedicineZhejiang UniversityHangzhou 310006China

Chromosomal abnormalities and Y chromosome microdeletions are considered to be the two more common genetic causes of spermatogenic ***,the relati on ship between chromosomal aberrations and Y chromosome microdeletio ns is still un *** study was to investigate the incidenee and characteristics of chromosomal aberrations and Y chromosome microdeletions in infertile men,and to explore whether there was a correlation between the two genetic defects of spermatogenic failure.A 7-year retrospective study was conducted on 5465 infertile men with nonobstructive azoospermia or *** analysis of peripheral blood lymphocytes was performed by standard G-banding techniques.Y chromosome microdeletions were screened by multiplex PCR amplification with six specific sequence-tagged site(STS)*** the 5465 infertile men analyzed,371(6.8%)had Y chromosome microdeletions and the prevalence of microdeletions in azoospermia was 10.5%(259/2474)and in severe oligozoospermia was 6.3%(107/1705).A total of 4003(73.2%)infertile men underwent karyotyping;370(9.2%)had chromosomal abnormalities and 222(5.5%)had chromosomal *** analysis was performed on 272(73.3%)patients with Y chromosome microdeletions and 77(28.3%)had chromosomal aberrations,all of which involved sex chromosomes but not *** was a sign ifica nt d iff ere nee in the frequency of chromosomal abno rmalities betwee n men with and without Y chromosome microdeletions(P<0.05).

关键词： azoospermia factor chromosomal aberrations infertile men nonobstructive azoospermia and oligozoospermia spermatogenic failure Y chromosome microdeletions

Numerical simulation of protection range in exploiting the upper protective layer with a bow pseudo-incline technique

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Mining Science and Technology 2009年第1期19卷 58-64页

作者： HU Guo-zhong WANG hong-tu li Xiao-hong fan Xiao-gang YUAN Zhi-gang Key Lab for Exploitation of China Southwestern Resources ＆ Environmental Disaster Control Engineering Ministry of Education Chongqing University Chongqing 400030 China

The developing processes of stress and deformation fields of a protected layer after mining an upper-protective layer with a bow pseudo-incline technique were simulated to locate the protection region. The pressure relief of the protected layer was analyzed after mining the upper-protective layer. The pressure relief angle along the strike and incline were located according to the roles of protection of the deformation and stress pressure-relief of the protective layer after mining. This results show that the upper-protective layer with the bow pseudo-incline technique have an upper and downside pressure relief angle of 85 and 68 degrees respectively; the distribution of strike pressure relief angles along the pseudo-incline working face is uneven and their values range from 38.3 to 51 degrees. The pressure relief angle of the inclined middle location was the largest. The distribution of the protection region of the upper-protective layer with the bow pseudo-incline teelmique located by practical tests and numerical simulation is essentially consistent, compared with the results obtained by these methods.

关键词： bow pseudo-incline technique upper-protective layer protection region 3D numerical simulation

Secure Order-Specified Multisignature Scheme Based on DSA

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Wuhan University Journal of Natural Sciences 2006年第6期11卷 1613-1616页

作者： YANG Muxiang SU li li Jun hong fan College of Computer Science and Technology Huazhong University of Science and Technology Wuhan 430074 Hubei China

In multisignature schemes signers can sign either in a linear order or not in any specified order, but neither of them is adequate in some scenarios where require mixture using of orderless and ordered multisignature. Most order-specified multisignatures specified the orders as linear ones. In this paper, we proposed an order-specified multisignature scheme based on DSA secure against active insider attack. To our knowledge, it is the first order-specified multisignature scheme based on DSA signature scheme, in which signers can sign in flexible order represented by series-parallel graphs. In the multisignature scheme verification to both signers and signing order are available. The security of the scheme is proved by reduce to an identification scheme that is proved have some concrete security. The running time of verifying a signature is comparable to previous schemes while the running time of multisignature generation and the space needed is less than those schemes.

关键词： order-specified multisignature active chosen message attack DSA(digital signature standard)

Lower respiratory tract samples are reliable for severe acute respiratory syndrome coronavirus 2 nucleic acid diagnosis and animal model study

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Zoological Research 2021年第2期42卷 161-169页

作者： Ren-Rong Tian Cui-Xian Yang Mi Zhang Xiao-li Feng Rong-Hua Luo Zi-Lei Duan Jian-Jian li Jia-Fa liu Dan-Dan Yu ling Xu hong-Yi Zheng Ming-Hua li hong-li fan Jia-li Wang Xing-Qi Dong Yong-Tang Zheng Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences KIZ-CUHK Joint Laboratory of Bioresources and Molecular Research in Common DiseasesKunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650223China Center for Biosafety Mega-Science Kunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650223China Yunnan Infectious Diseases Hospital KunmingYunnan 650301China

Severe acute respiratory syndrome coronavirus 2(SARS-Co V-2) and coronavirus disease 2019(COVID-19) continue to impact countries *** present, inadequate diagnosis and unreliable evaluation systems hinder the implementation and development of effective prevention and treatment strategies. Here, we conducted a horizontal and longitudinal study comparing the detection rates of SARS-Co V-2 nucleic acid in different types of samples collected from COVID-19 patients and SARS-Co V-2-infected monkeys. We also detected anti-SARS-Co V-2 antibodies in the above clinical and animal model samples to identify a reliable approach for the accurate diagnosis of SARS-Co V-2 infection. Results showed that, regardless of clinical symptoms, the highest detection levels of viral nucleic acid were found in sputum and tracheal brush samples, resulting in a high and stable diagnosis rate. Anti-SARS-Co V-2 immunoglobulin M(Ig M) and G(Ig G) antibodies were not detected in6.90% of COVID-19 patients. Furthermore,integration of nucleic acid detection results from the various sample types did not improve the diagnosis rate. Moreover, dynamic changes in SARS-Co V-2 viral load were more obvious in sputum and tracheal brushes than in nasal and throat swabs. Thus,SARS-Co V-2 nucleic acid detection in sputum and tracheal brushes was the least affected by infection route, disease progression, and individual differences. Therefore, SARS-Co V-2 nucleic acid detection using lower respiratory tract samples alone is reliable for COVID-19 diagnosis and study.

关键词： COVID-19 SARS-CoV-2 Diagnosis Animal model

Structure, composition and enzymatic hydrolysis of steam-exploded lespedeza stalks

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Forestry Studies in China 2007年第2期9卷 137-141页

作者： Wang Kun Wang fang Jiang Jian-xin Zhu li-wei fan hong-zhuai College of Materials Science and Technology Beijing Forestry University Beijing 100083 P. R. China

Pretreatment of lespedeza stalks by steam explosion has been studied. The results indicate that steam-exploded pretreatment has strong effects on physical features, morphology, crystallinity, and composition of lespedeza stalks as shown by scanning electron microscopy （SEM）, infrared （IR）, and X-ray diffraction spectrometry methods. After steam explosion, the cellulose and lignin contents of lespedeza stalks varied only slightly, but the hemicellulose content had decreased from 29.34% to 7.48%. The cellulose obtained by steam-exploded pretreatment had a higher degree of crystallinity than that of the raw material. At the explosion condition of 2.25 MPa and 4 min, lignocellulose is easier to hydrolyze by enzyme than the original lignocellulose. The concentration of reduced sugar in the hydrolyzate liquid increased from 71.77 to 162.84 g·L^-1.

关键词： steam explosion lespedeza stalks structure composition enzymatic hydrolysis

磁集成开关电感交错并联Buck/Boost变换器

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电机与控制学报 2018年第6期22卷 87-95页

作者：李洪珠曹人众张垒李洪璠辽宁工程技术大学电气与控制工程学院辽宁葫芦岛125105 国网辽宁省电力有限公司辽阳供电公司辽宁辽阳111000 三亚学院理工学院海南三亚572022

为了提高传统Buck/Boost变换器的电压增益、暂态响应速度同时减小电感支路的电流纹波和变换器的体积重量。将磁集成开关电感技术和交错并联技术应用到传统的Buck/Boost变换中,提出了磁集成开关电感交错并联Buck/Boost变换器。通过采用... 详细信息

为了提高传统Buck/Boost变换器的电压增益、暂态响应速度同时减小电感支路的电流纹波和变换器的体积重量。将磁集成开关电感技术和交错并联技术应用到传统的Buck/Boost变换中,提出了磁集成开关电感交错并联Buck/Boost变换器。通过采用开关电感结构替换传统变换器中的电感的方式,使变换器正向功率变换的电压增益提高为原来的2倍。采用磁集成技术并合理设计耦合电感间的耦合系数能够减小该变换器电感支路的电流纹波、提高系统暂态响应速度、减小变换器的体积重量,进而提高变换器的电气性能。最后通过实验样机的结果验证了理论分析的正确性。

关键词： Buck/Boost变换器开关电感磁集成交错并联电压增益

Fast species identification of mycobacterium by rpoB gene chip technology

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Journal of life Sciences 2009年第5期3卷 43-46页

作者： li hong-min fan Bo WANG Wei AN Hui-ru MIAO Qing Tuberculosis Research Laboratory The Second Clinical Department of the PLA General Hospital Beijing 100091 China

Based on rpoB gene micro array as target gene, we are going to use gene chip technology to test 24 mycobacterium standard specimens, 8 non-mycobacterium specimens and 86 mycobacterium clinical isolated specimens. As a result, after mycobacterium and non-mycobacterium standard specimens were duplicated by PCR, mycobacterium standard specimens reproduced 360bp DNA fragments; on the other hand, non-mycobacterium specimens did not reproduce any fragments except for hemolytic streptococcus and corynebacterium pseudodiphtheriticum which had the same results as mycobacterium standard specimens. Sensitive test is able to detect lpg tuberculosis mycobacterium DNA. The probe test showed that, among 21 oligonucleotide probes, probe-M. fortuitum and M. marinum were cross-hybrid; the other probes were specific. We used the new method to identify 126 mycobacterium clinical isolated specimens. The test results of this new method matched with conventional method. In conclusion, compared to the traditional method, the use of rpob gene chip technology to identify mycobacterium species will be faster, more accurate and higher value in application.

关键词： mycobacterium rpoB gene chip technology oligonucleotide probes

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上海市长宁区中老年妇女慢性病现况调查

复旦学报（医学版） 2001年第4期28卷 351-353页

作者：李琦刘大可李泓澜金凡上海市肿瘤研究所上海200032

目的　了解中老年妇女慢性病患病状况 ,为社区中老年妇女的疾病预防、健康促进及制定中老年卫生政策提供科学依据。方法　采用入户调查的方式 ,对上海市长宁区 75 36 8名 40～ 6 9岁中老年妇女常见慢性病患病率及常见关联因素 ,进行了... 详细信息

目的　了解中老年妇女慢性病患病状况 ,为社区中老年妇女的疾病预防、健康促进及制定中老年卫生政策提供科学依据。方法　采用入户调查的方式 ,对上海市长宁区 75 36 8名 40～ 6 9岁中老年妇女常见慢性病患病率及常见关联因素 ,进行了结构式问卷调查。结果　在长宁区中老年妇女中 ,各种常见慢性病患病率居前5位的依次为高血压 (2 3.9% )、慢性胃炎 (19.7% )、冠心病 (7.4% )、肿瘤 (6 .5 % )和糖尿病 (4 .4% )。常见恶性肿瘤中 ,乳腺癌患病率最高 (75 0 / 10万 ) ,其次是胃癌 (130 / 10万 )。影响慢性病患病率的因素包括年龄、婚姻状况、吸烟、饮酒及饮茶等。结论　社区卫生工作应从健康教育入手 ,积极开展老年病防治工作。卫生部门应关注人口老龄化带来的新问题。

关键词：中老年妇女慢性病患病率危险因素调查统计