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Lateral magnetic stiffness under different parameters in a high-temperature superconductor levitation system

Chinese Physics B 2021年第7期30卷 515-525页

作者： Yong Yang yun-yi Wu School of Mechano-Electronic Engineering Xidian UniversityXi'an 710071China China Three Gorges Science and Technology Research Institute Beijing 100036China Physikalisches Institute B RWTH AachenAachen 52056Germany

Magnetic stiffness determines the stability of a high-temperature superconductor(HTS)magnetic levitation *** quantitative properties of the physical and geometrical parameters that affect the stiffness of HTS levitation systems should be identified for improving the stiffness by some effective *** magnetic stiffness is directly related to the first-order derivative of the magnetic force with respect to the corresponding displacement,which indicates that the effects of the parameters on the stiffness should be different from the relationships between the forces and the same *** this paper,we study the influences of some physical and geometrical parameters,including the strength of the external magnetic field(B0)produced by a rectangular permanent magnet(PM),critical current density(Jc),the PM-to-HTS area ratio(α),and thickness ratio(β),on the lateral stiffness by using a numerical approach under zero-field cooling(ZFC)and field cooling(FC)*** the first and second passes of the PM,the lateral stiffness at most of lateral positions essentially increases with B0 increasing and decreases withβincreasing in ZFC and *** largest lateral stiffness at every lateral position is almost produced by the minimum value of Jc,which is obviously different from the lateral force–Jc ***α-dependent lateral stiffness changes with some parameters,which include the cooling conditions of the bulk HTS,lateral displacement,and movement history of the *** findings can provide some suggestions for improving the lateral stiffness of the HTS levitation system.

关键词： high-temperature superconductor magnetic levitation lateral stiffness lateral force

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One-pot synthesis of 7-aryl-11,12-dihydrobenzo[h]pyrimido-[4,5-b]quinoline-8,10(7H,9H)-diones via three-component reaction in ionic liquid

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Chinese Chemical Letters 2010年第12期21卷 1435-1438页

作者： Hong yun Guo yi Yu College of Chemical Engineering and Materials Zhejiang University of Technology Hangzhou 310014 China

A series of new 7-aryl-11,12-dihydrobenzo[h]pyrimido-[4,5-b]quinoline-8,10（7H,9H）-diones were synthesized via three-component reaction of aldehydes,l-naphthylamine and barbituric acid in ionic *** method provided se... 详细信息

关键词： Aldehyde 1-Naphthylamine Barbituric acid Ionic liquid

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Two-Variable Hermite Polynomial Excitation of Two-Mode Squeezed Vacuum State as Squeezed Two-Mode Number State

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Communications in Theoretical Physics 2008年第10期50卷 965-970页

作者： HU Li-yun FAN Hong-yi Department of Physics Shanghai Jiao Tong University Shanghai 200030 China

We find that the squeezed two-mode number state is just a two-variable Hermite polynomial excitation of thetwo-mode squeezed vacuum state (THPES).We find that the Wigner function of THPES and its marginal distributionsare just related to two-variable Hermite polynomials (or Laguerre polynomials) and that the tomogram of THPES canbe expressed by one-mode Hermite polynomial.

关键词： Two variable Hermite polynomial excitation state Wigner function marginal distribution tomgram

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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

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Alternative Splicing and Differential Expression of Two Transcripts of Nicotine Adenine Dinucleotide Phosphate Oxidase B Gene from Zea mays

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Journal of Integrative Plant Biology 2009年第3期51卷 287-298页

作者： Fan Lin yun Zhang Ming-yi Jiang College of Life Sciences Nanjing Agricultural University Nanjing 210095 China

With the exception of rice, little is known about the existence of respiratory burst oxidase homolog （rboh） gene in cereals. The present study reports the cloning and analysis of a novel rboh gene, termed ZmrbohB, from maize （Zea mays L.）. The full-length cDNA of ZmrbohB encodes a 942 amino acid protein containing all of the respiratory burst oxidase homolog catalytically critical motifs. Alternative splicing of ZmrbohB has generated two transcript isoforms, ZmrbohB-α and -β. Spliced transcript ZmrbohB-β retains an unspliced intron 11 that carries a premature termination codon and probably leads to nonsense-mediated mRNA decay. Expression analysis showed that two splice isoforms were differentially expressed in various tissues and at different developmental stages, and the major product was ZmrbohB-e. The transcripts of ZmrbohB-α accumulated markedly when the maize seedlings were subjected to various abiotic stimuli, such as wounding, cold （4℃）, heat （40℃）, UV and salinity stress. In addition, several abiotic stimuli also affected the alternative splicing pattern of ZmrbohB except wounding. These results provide new insight into roles in the expression regulation of plant rboh genes and suggest that ZrnrbohB gene may play a role in response to environmental stresses.

关键词： abiotic stress alternative splicing respiratory burst oxidase homolog Zea mays.

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Entropy method for determination of weight of evaluating indicators in fuzzy synthetic evaluation for water quality assessment

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Journal of Environmental Sciences 2006年第5期18卷 1020-1023页

作者： ZOU Zhi-hong yun yi SUN Jing-nan School of Economics and Management Beihang University Beijing 100083 China

Considering the difficulty of fuzzy synthetic evaluation method in calculation of the multiple factors and ignorance of the relationship among evaluating objects, a new weight evaluation process using entropy method was introduced. This improved method for determination of weight of the evaluating indicators was applied in water quality assessment of the Three Gorges reservoir area. The results showed that this method was favorable for fuzzy synthetic evaluation when there were more than one evaluating objects. One calculation was enough for calculating every monitoring point. Compared with the original evaluation method, the method predigested the fuzzy synthetic evaluation process greatly and the evaluation results are more reasonable.

关键词： water quality evaluation fuzzy weight of evaluating indicator entropy method

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Risk factors for posttransplant diabetes in patients with hepatocellular carcinoma

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Hepatobiliary & Pancreatic Diseases International 2023年第4期22卷 423-425页

作者： yi-yun Feng Ming-Zhi Xu Zhejiang Chinese Medical University Hangzhou 310053China Department of General Medicine Zhejiang Cancer HospitalInstitute of Basic Medicine and Cancer(IBMC)Chinese Academy of SciencesHangzhou 310022China Shulan(Hangzhou)Hospital Affiliated to Zhejiang Shuren University Shulan International Medical CollegeHangzhou 310015China

To the Editor:Hepatocellular carcinoma(HCC)is one of the most common cause of cancer death worldwide,and in China,primary HCC ranks 4th for incidence and 2nd for mortality among all cancers[1].Traditionally,the gold standard treatment for HCC is surgical resection,but most patients are not fit due to the advanced *** the 1980s,liver transplantation emerged as the treatment of choice for endstage liver disease and also became an option for HCC patients[2].But elevated blood glucose is a common com-plication after liver transplantation,affecting approximately 20%-40%of liver recipients[3].Posttransplant diabetes mellitus(PTDM)refers to newly diagnosed diabetes mellitus(DM)after transplanta-tion,regardless of timing or presence but undetected before trans-plantation[4].

关键词： patients diabetes elevated

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The protective role of tacrine and donepezil in the retina of acetylcholinesterase knockout mice

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International Journal of Ophthalmology(English edition) 2015年第5期8卷 884-890页

作者： yun-Min yi Li Cai yi Shao Man Xu Jing-Lin yi Affiliated Eye Hospital of Nanchang University Jiangxi Research Institute of Ophthalmology and Visual Sciences Department of Ophthalmology the First Affiliated Hospital of Nanchang University

AIM: To determine the effect of different concentrations of the acetylcholinesterase (AChE) inhibitors tacrine and donepezil on retinal protection in AChE(+/-) mice (AChE knockout mice) of various ages. METHODS: Cultured ARPE -19 cells were treated with hydrogen peroxide (H2O2) at concentrations of 0, 250, 500, 1000 and 2000 mu mol/L and protein levels were measured using Western blot. Intraperitoneal injections of tacrine and donepezil (0.1 mg/mL, 0.2 mg/mL and 0.4 mg/mL) were respectively given to AChE4- mice aged 2mo and 4mo and wild-type S129 mice for 7d; phosphate buffered saline (PBS) was administered to the control group. The mice were sacrificed after 30d by cardiac perfusion and retinal samples were taken. AChE(+/-) deficient mice were identified by polymerase chain reaction (PCR) analysis using specific genotyping protocols obtained from the Jackson Laboratory website. H&E staining, immunofluorescence and Western blot were performed to observe AChE protein expression changes in the retinal pigment epithelial (RPE) cell layer. RESULTS: Different concentrations of H2O2 induced AChE expression during RPE cell apoptosis. AChE(+/-) mice retina were thinner than those in wild -type mice (P0.05). CONCLUSION: in viva, tacrine and donepezil can inhibit the expression of AChE; the decrease of AChE expression in the retina is beneficial for the development of the retina.

关键词： retinal pigment epithelium acetylcholinesterase apoptosis AChE(+/-) animal models acetylcholinesterase inhibitors

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Optimized XML Storage in NXD Based on Tree-Structure Disassemble

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Wuhan University Journal of Natural Sciences 2006年第1期11卷 93-99页

作者： LIU yun-sheng WANG yi ZHONG Hao School of Computer Science and Technology Huazhong University of Science and Technology Wuhan 430074Hubei China

Independent XML storage based on XSD （XML Schema Document） is adopted in NXD（Native XML Data base）, XMI. storage structure based on tree-structure disassemble and the algorithm used in dynamically updating XML document are provided in this paper. The main idea is that in term of data model of XML document, XML document is parsed to Document Structure-Tree with Hierarchical Model and Leaf-Data with Relation Model for storage. Simultaneously Proxy node is imported in order to solve the problem that XML data store in cross-blocks. And with XSD model information, sparse index is constructed to save storage space. It is proved that this storage structure could improve efficiency of XML document operation.

关键词： XML storage storage model NXD (native XML database) document trees regular expression

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Role of RECK methylation in gastric cancer and its clinical significance

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World Journal of Gastroenterology 2010年第7期16卷 904-908页

作者： Du, yun-yi Dai, Dong-Qiu Yang, Zhi China Med Univ Affiliated Hosp 1 Dept Surg Oncol Shenyang 110001 Liaoning Prov Peoples R China

AIM:To investigate the relation between RECK methylation and clinicopathological characteristics of gastric cancer patients and evaluate the role of RECK methylation in peritoneal metastasis of gastric ***:Methylation of RECK gene in 40 paired samples of gastric cancer and its corresponding adjacent normal mucosa,lymph nodes and peritoneal irrigation fluid was detected by methylation-specific polymerase chain ***:Aberrant methylation of RECK gene was detected in 27.5%(11/40)of the adjacent normal mucosa samples,in 47.5%(19/40)of gastric cancer samples,in 57.1%(12/21)of the lymph node samples,and in 35%(14/40)of peritoneal irrigation fluid samples,respectively,with a significant difference between the adjacent normal mucosa and lymph node samples(P=0.023).Presence of RECK methylation in the primary tumor samples was significantly correlated with tumor invasion(P=0.023).The accuracy of RECK methylation in peritoneal lavage fluid samples for the diagnosis of peritoneal metastasis of gastric cancer was 72.5%(26/40),with a sensitivity of 66.7%(6/9) and a specificity of 74.2%(23/31).CONCLUSION:Aberrant methylation of RECK gene may provide useful information for the early diagnosis and treatment of peritoneal metastasis of gastric cancer.

关键词： RECK gene Hypermethylation Gastric cancer Metastasis Peritoneal lavage fluid

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