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Masses and Sigma Terms of Pentaquarks in Chiral Perturbation Theory

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Communications in Theoretical Physics 2006年第4X期46卷 704-710页

作者： LI Xiao-ya LU Xiao-fu Department of Physics Sichuan University Chengdu 610064 China Institute of Theoretical Physics the Chinese Academy of Sciences Beijing 100080 China China Center of Advanced Science and Technology (World Laboratory) Beijing 100080 China

Assuming that the recently θ＋ and other exotic resonances belong to the pentaquark i0 of SU（3）I with J^P = 1/2, we constructed a relativistic effective lagrangian in the frame work of baryon chiral perturbation theory. The masses of pentaquarks under isospin symmetry is determined by calculating the propagator to one loop, where the extended on-mass-shell renormalization scheme is applied. Using the experimental data for masses of θ＋, Ξ and N, we estimated the mass of Σ and the a terms.

关键词： pentaquark chiral perturbation theory σ term

Hydraulic experiment on mushroom head in bottom-blown smelting furnace

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Journal of Iron and Steel Research International 2017年第5期24卷 490-494页

作者： fu-yong Su Zhi wen School of Energy and Environmental Engineering University of Science and Technology Beijing Beijing 100083 China

There are many bottom-blown smelting furnaces in metallurgical industry. When oxygen or air sprays from the jet nozzle into the bottom of the furnace, the melting phase will be frozen and a hemispherical porous zone with a mushroom head shape will be formed around the nozzle. The mushroom head can pro- tect the jet nozzle and mitigate the liquid spray on the surface of melt. In order to analyze the formation process of a mushroom head in the bottom-blown smelting furnaces, a hydraulic experiment system was designed and the formation of the mushroom head was investigated by hydraulic experiment. The hydrau- lic experiment results show that the formation process is mainly divided into generating crushing genera- ting process and stable mushroom head generation process. The formation of stable mushroom head re- quires certain thermodynamic condition and water splash is more intense without a mushroom head than with a mushroom head. The size, porosity and diameter of the mushroom head are affected by the flow rate, temperature and heat capacity of the bottom-blowing gas and the temperature of the superheat and the physical parameters of the melt.

关键词： Bottom-blown smelting furnace Mushroom head Hydraulic experiment Thermal equilibrium Similarity criterion

Heterotopic pregnancy after assisted reproductive techniques with favorable outcome of the intrauterine pregnancy:A case report

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World Journal of Clinical Cases 2023年第3期11卷 669-676页

作者： ya-Nan Wang Lian-wen Zheng Lu-Lu fu Ying Xu Xue-Ying Zhang Department of Obstetrics and Gynecology Reproductive Medical CenterThe Second Hospital of Jilin UniversityChangchun 130000Jilin ProvinceChina

BACKGROUND Heterotopic pregnancy(HP)is a rare condition in which both ectopic and intrauterine pregnancies *** is uncommon after natural conception but has recently received more attention due to the widespread use of assisted reproductive techniques(ART)such as ovulation promotion *** SUMMARY Here,we describe a case of HP that occurred after ART with concurrent tubal and intrauterine singleton *** was treated successfully with surgery to preserve the intrauterine pregnancy,resulting in the birth of a low-weight premature *** case report aims to increase awareness of the possibility of HP during routine first-trimester ultrasound examinations,especially in pregnancies resulting from ART and even if multiple intrauterine pregnancies are *** This case alerts us to the importance of comprehensive data collection during regular *** is important for us to remind ourselves of the possibility of HP in all patients presenting after ART,especially in women with an established and stable intrauterine pregnancy that complain of constant abdominal discomfort and also in women with an unusually raised human chorionic gonadotropin level compared with simplex intrauterine *** will allow symptomatic and timeous treatment of patients with better results.

关键词： Heterotopic pregnancy Assisted reproductive techniques Preterm labor Premature rupture of membranes Case report

Peptides-carrageenan-xanthan gum: Printing mechanism and anti-oxidation under in vitro digestion

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FOOD BIOSCIENCE 2023年第3期53卷 1802-1812页

作者： Zhan, Jun-qi Yu, wen-tao fu, Jing-jing Li, Gao-shang Hu, ya-qin Chen, Yue-wen Zhejiang Gongshang Univ Sch Food Sci & Biotechnol Hangzhou 310035 Zhejiang Peoples R China Zhejiang Gongshang Univ Zhejiang Prov Collaborat Innovat Ctr Food Safety & Hangzhou 310035 Zhejiang Peoples R China Zhejiang Univ Inst Food Engn Hangzhou 310058 Zhejiang Peoples R China Hainan Trop Ocean Univ Coll Food Sci & Engn Hainan Peoples R China Zhejiang Gongshang Univ Sch Food Sci & Biotechnol Xuezheng Str 18 Hangzhou 310018 Peoples R China

Surimi is a protein-rich food. The peptides hydrolyzed by surimi have many functional activities and showed strong antioxidant activity in ABTS free radical scavenging experiments, hydroxyl radical scavenging experi-ments and iron ion reduction experiments. The scavenging rates of ABTS ions, hydroxyl radicals and iron ions were 62.83%, 74.81% and 0.035 mg/mL, respectively. 3D printing ink was formulated by compounding carrageenan, xanthan gum and surimi peptides. The surimi polypeptide "ink" contains 3% carrageenan, 4% xanthan gum and 4 mg/mL surimi polypeptide. This "ink" not only has good printability, but also has stable antioxidant properties. The effect of the peptides on the printed structures can also be observed under an inverted fluorescence microscope. In the in vitro digestion experiment, the surimi polypeptide 3D printing ink added with carrageenan and xanthan gum can release most of the peptides. After in vitro digestion experiments, the anti-oxidant activity of surimi polypeptides increased. The above experiments have proved that surimi polypeptide is a high-quality raw material for preparing 3D printing ink.

关键词： Peptide inks 3D printing Structure Simulated gastrointestinal digestion Anti-oxidation properties

Target Deployment and Retrieval Using JIAOLONG Manned Submersible in the Depth of 6600 m in Mariana Trench

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China Ocean Engineering 2017年第5期31卷 618-623页

作者： GAO Xiang DING Kang REN Yu-gang fu wen-tao DING Zhong-jun ZHAO Sheng-ya LIU Bao-hua National Deep Sea Center Institute of Deep-Sea Science and Engineering Chinese Academy of Sciences

China＇s 7000 m manned submersible JIAOLONG carried out an exploration cruise at the Mariana Trench from June to July 2016. The submersible completed nine manned dives on the north and south area of the Mariana Trench from the depth of 5500 to 6700 m, to investigate the geological, biological and chemical characteristics in the hadal area. During the cruise, JIAOLONG deployed a gas-tight serial sampler to collect the water near the sea bottom regularly. Five days later, the sub located the sampler in another dive and retrieved it successfully from the same location, which is the first time that scientists and engineers finished the high accuracy in-situ deployment and retrieval using a manned submersible with Ultra-Short Base Line （USBL） positioning system at the depth more than 6600 m. In this task, we used not only the USBL system of the manned submersible but also a compound strategy, including five position marks, the sea floor terrain, the depth contour, and the heading of the sub. This paper introduces the compound strategy of the target deployment and retrieval with the practical diving experience of JIAOLONG, and provides a promising technique for other underwater vehicles such as manned submersible or Remote Operated Vehicle （ROV） under similar conditions.

关键词： target deployment and retrieval manned submersible USBL Mariana Trench

Reversing anther thermotolerance by manipulating the cis-elements in the promoter of a high-temperature upregulated gene Casein Kinase I in upland cotton

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Science China Life Sciences 2025年

作者： yanlong Li Yinuo fu yaoyao Li Rui Zhang Jing yang Huanhuan Ma Ling Min Xianlong Zhang National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural University

High temperature (HT) stress causes male sterility,leading to reduced upland cotton ***,we identified a key gene,Casein Kinase I (GhCKI),that negatively regulates male fertility in upland cotton under ***,conventional genetic manipulations of GhCKI would result in male sterility,hindering its utilization in breeding ***,we engineered quantitative variation for anther thermotolerance-related traits in upland cotton by creating weak promoter alleles of GhCKI genes,using CRISPR/Cas9 and CRISPR/Cpf1genome ***,we screened and identified two new upland cotton plant lines exhibiting a HT-tolerant phenotype with edited GhCKI promoters,and characterized their corresponding heat-tolerant allelic *** research revealed that the primary reason for the HT tolerance of the GhCKI promoter editing mutants is that the trans-acting factors GhMYB73 and GhMYB4,which positively regulate GhCKI expression under HT,failed to bind and activate the expression of ***,our study not only provides a rapid strategy to generate new beneficial alleles but also offers novel germplasm resources and molecular insights for crop HT tolerance breeding.

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COUPLING SIMULATION OF SURFACE FLOW AND SUBSURFACE FLOW OVER POROUS MEDIA

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Journal of Hydrodynamics 2004年第3期16卷 283-289页

作者： ZHANGPei-wen LIUDe-fu SONGYu-pu DepartmentofCivilEngineering DalianUniversityofTechnologyDalian116023China DepartmentofCivilEngineering ChinaThreeGorgesUniversityYichang443002China DepartmentofCivilEngineering DalianUniversityofTechnologyDalian116023China

Mathematical model of water flow over porous media is developed, the computerprogram is compiled , and an example is given to verify the validity of the model. The results ofthe calculation show that the model is very... 详细信息

关键词： seepage runoff porous media

Helicobacter pylori neutrophil-activating protein:From molecular pathogenesis to clinical applications

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World Journal of Gastroenterology 2014年第18期20卷 5294-5301页

作者： Hua-wen fu Institute of Molecular and Cellular Biology Department of Life ScienceNational Tsing Hua University

Helicobacter pylori (H. pylori) neutrophil-activating protein (HP-NAP) was originally identified as a virulence factor of H. pylori for its ability to activate neutrophils to generate respiratory burst by releasing reactive oxygen species. Later on, HP-NAP was also found to be involved in the protection of H. pylori from DNA damage, supporting the survival of H. pylori under oxidative stress. This protein is highly conserved and expressed by virtually all clinical isolates of H. pylori. The majority of patients infected with H. pylori produced antibodies specific for HP-NAP, suggesting its important role in immunity. In addition to acting as a pathogenic factor by activating the innate immunity through a wide range of human leukocytes, including neutrophils, monocytes, and mast cells, HP-NAP also mediates adaptive immunity through the induction of T helper cell type I responses. The pro-inflammatory and immunomodulatory properties of HP-NAP not only make it play an important role in disease pathogenesis but also make it a potential candidate for clinical use. Even though there is no convincing evidence to link HP-NAP to a disease outcome, recent findings supporting the pathogenic role of HP-NAP will be reviewed. In addition, the potential clinical applications of HP-NAP in vaccine development, clinical diagnosis, and drug development will be discussed.

关键词： Helicobacter pylori, Helicobacter pylori neutrophil-activating protein, Clinical application, Vaccine, Diagnosis, Drug development, Immunotherapy, Immunomodulation, T helper cell type I/II

Integrated lifting line/surface panel method for optimal propeller design with consideration of hub effect

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Journal of Hydrodynamics 2019年第6期31卷 1218-1230页

作者： wen-yu Sun Guo-fu Huang China Ship Scientific Research Center Wuxi 214082China

An optimal marine propeller design method is proposed,which integrates the lifting line and surface panel method and is characterized by the use of the surface panel method to take the hub effect into *** developing an integrated approach instead of an iterative method for the calculation of the interaction between the hub and the designed blades,the hub effects on the optimal circulation can be accounted for throughout the theoretical design *** new integrated method provides a fast and accurate enough method to model the straight forward hub surface,in the optimal propeller design.A systematic design procedure from the basic design inputs to the blade geometry determination is performed and the designed propellers are validated by the surface panel method and the RANS *** design and analysis cases are considered by different approaches with comparison and *** a comparative study including different hub geometries is also performed to reveal the mechanism of the hub effect on the distributions of the propeller optimal loads.

关键词： Optimal circulation design lifting line method surface panel method hub effect