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Boundedness of Marcinkiewicz Integrals in Weighted Variable Exponent Herz-Morrey Spaces

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Communications in Mathematical Research 2018年第4期34卷 371-382页

作者： XIAO DAN shu LI-sheng Ji You-qing Department of Basic Courses Anhui Professional College of ArtHefei230001 School of Mathematics and Statistics Anhui Normal UniversityWuhuAnhui241003 不详

In this paper, under natural regularity assumptions on the exponent function, we prove some boundedness results for the functions of Littlewood-Paley, Lusin and Marcinkiewicz on a new class of generalized Herz-Morrey ... 详细信息

关键词： Marcinkiewicz integral variable exponent Muckenhoupt weight Herz-Morrey space

Crystal Tilts in Epitaxially Laterally Overgrown GaN Films Determined by Four-Circle X-Ray Diffraction

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Chinese Physics Letters 2001年第6期18卷 813-815页

作者： WANG Feng ZHANG Rong CHEN Zhi-Zhong WU Xiao-Shan GU shu-Lin SHEN Bo ZHENG You-Dou JIANG shu-sheng Department of Physics and National Laboratoy of Solid State Microstructures Nanjing UniversityNanjing 210093

Crystal tilts in epitaxially laterally overgrown(ELO)GaN films via hydride vapor phase epitaxy(HVPE)on sapphire substrates have been investigated by using four-circle x-ray diffraction *** diffraction peaks corresponding to the(0002)reflection of vertically epitaxial and tilted GaN domains are observable in the x-ray rocking *** angle separationsΔωbetween the main peak and two lobes change with the azimuth angleФ.The dependence ofΔωonФand the crystal tilt angleθhas been calculated based on the standard kinetic x-ray diffraction *** crystal tilt angle of a typical HVPE ELO GaN sample has been determined to be 2.379℃.

关键词： Crystal GaN sapphire

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肠道微生物对畜禽脂质代谢的影响

饲料研究 2024年第11期47卷 138-142页

作者：戴思凡王梓蓓和世春吴东旺刘萍赵树生李清毛华明云南农业大学动物科学技术学院云南昆明650000 广南县畜牧兽医站云南文山663000

肠道微生物对维持动物健康具有至关重要的作用,它们可通过多种直接或间接的机制参与并影响宿主的生理过程。尽管肠道微生物与畜禽机体的新陈代谢和健康状况密切相关,但关于它们之间的关系及其作用机制还需深入研究。文章重点介绍了近年... 详细信息

肠道微生物对维持动物健康具有至关重要的作用,它们可通过多种直接或间接的机制参与并影响宿主的生理过程。尽管肠道微生物与畜禽机体的新陈代谢和健康状况密切相关,但关于它们之间的关系及其作用机制还需深入研究。文章重点介绍了近年来在揭示肠道微生物群与动物脂质代谢关系方面的研究进展,探讨了畜禽肠道微生物的代谢产物(如短链脂肪酸、胆汁酸以及色氨酸代谢产物及其衍生物)与脂质代谢之间的复杂相互作用。文章特别讨论了肠道微生物群与宿主之间的相互作用如何共同决定宿主和微生物群的代谢变化,总结了国内外关于通过调节肠道微生物群来改善宿主脂质代谢的研究,旨在为利用肠道微生物调节脂质代谢以改善肉品质的应用和研究提供参考。

关键词：肠道微生物脂质代谢肉品质

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空气-旋转阀脉冲燃烧器的性能试验研究

热能动力工程 2000年第6期15卷 652-654页

作者：臧述升上海交通大学动力与能源工程学院上海200030

介绍了空气 -旋转阀脉冲燃烧器试验装置、试验过程 ,并且通过试验得出了此种燃烧器的运行特性 ,探讨了进气流量对燃烧器压力、幅值、频率等参数的影响。通过对结果的分析 ,阐述了空气 -旋转阀脉冲燃烧器的工作机理。

关键词：脉冲燃烧器锅炉空气-旋转阀性能试验

Effect of Exogenous MJA Treatment of Tea Plants on the Growth of Geometrid Larvae

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Agricultural Sciences in China 2005年第9期4卷 673-679页

作者： GUI Lian-you CHEN Zong-mao LIU shu-sheng Institute of Applied Entomology Zhejiang University Hangzhou 310029 P.R.China Key Laboratory of Tea Chemical Engineering Ministry of Agriculture/Tea Research Institute Chinese Academy of Agricultural Sciences Hangzhou 310008 P.R China Agricultural College Yangtze University Hubei 434025 P.R. China

The effect of tea plant Camellia sinensis induced by exogenous methyl jasmonate （MJA） on lipoxygenase （LOX）, polyphenol oxidase （PPO） and proteinase inhibitor （PI） activity in the leaves of tea plants, as well as the growth and midgut proteinase activity of the geometrid Ectropis obliqua larvae were studied. MJA significantly induced LOX, PPO and PI activity in leaves of tea plants. When geometrid larvae have fed on leaves of tea plants treated with MJA, the activities of the high alkaline trypsin-like enzyme and chymotrypsin-like enzyme in their midgut were significantly inhibited, but the activities of the low alkaline trypsin-like enzyme in their midgut were unaffected, leading to imbalance between different types of proteinase activity in the midgut of the larvae and in turn, the growth were inhibited. These chains of response may be an important mechanism of the direct resistance induced by MJA-treatment of tea plant on geometrid larvae.

关键词： Methyl jasmonate Proteinase inhibitors Midgut proteinase Ectropis obliqua Camellia sinensis

Functional CT for assessment of early vascular physiology in liver tumors

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Hepatobiliary & Pancreatic Diseases International 2008年第5期7卷 497-502页

作者： Jiang, Hui-Jie Zhang, Zai-Ren Shen, Bao-Zhong Wan, Yong Guo, Hong shu, sheng-Jie Harbin Med Coll Affiliated Hosp 4 Dept Med Imaging Harbin 150001 Peoples R China Harbin Med Coll Affiliated Hosp 2 CT Room Harbin 150086 Peoples R China

BACKGROUND: CT perfusion has been reported to have great advantages in detecting hepatic diseases. However, currently there are no studies showing the potential value of multi-slice CT perfusion with the deconvolution model method in diagnosing early hemodynamic changes caused by liver tumors. This study was undertaken to determine if early hemodynamic changes caused by liver tumors can be depicted with the perfusion imaging of multi-slice CT. METHODS: Ten New Zealand white rabbits before and after VX2 liver tumor inoculation served as the experimental animals. Ten normal rabbits served as controls. All underwent multi-slice CT perfusion for the measurement of hepatic blood flow (HBF), hepatic blood volume (HBV), mean transit time (MTT), permeability of capillary vessel surface (PS) and hepatic artery index (HAI). RESULTS: With the exception of MTT, which decreased significantly at the tumor periphery, HBF, HBV,. PS and HAI increased significantly compared with the surrounding normal tissue. All these changes occurred at days 5-9 after tumor inoculation. Statistically significant changes in these values were detected with tumor growth. CONCLUSIONS: The hemodynamic changes in the liver caused by rabbit VX2 liver tumor can be detected after tumor inoculation, and functional CT can evaluate the physiological characteristics of early tumor angiogenesis.

关键词： liver tumors computed tomography hemodynamics animal model

Boundedness for Multilinear Commutators of Bochner-Riesz Operator

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Journal of Mathematical Research and Exposition 2011年第6期31卷 1074-1080页

作者： Ru Long XIE Li sheng shu Qian Xiang ZHANG Department of Mathematics Chaohu UniversityAnhui 238000P.R.China Department of Mathematics Anhui Normal UniversityAnhui 241000P.R.China

In this paper,the boundedness for the multilinear commutators of Bochner-Riesz operator is *** prove that the multilinear commutators generated by Bochner-Riesz operator and Lipschitz function are bounded from Lp（Rn... 详细信息

关键词： multilinear commutators Bochner-Riesz operator Lipschitz function BMO space.

Viral infection of tobacco plants improves performance of Bemisia tabaci but more so for an invasive than for an indigenous biotype of the whitefly

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2010年第1期11卷 30-40页

作者： Jian LIU Meng LI Jun-min LI Chang-jun HUANG Xue-ping ZHOU Fang-cheng XU shu-sheng LIU Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects Institute of Insect Sciences Zhejiang University Hangzhou 310029 China) Institute of Biotechnology Zhejiang University Hangzhou 310029 China Wenzhou Academy of Agricultural Sciences Wenzhou 325006 China

The ecological effects of plant-virus-vector interactions on invasion of alien plant viral vectors have been rarely investigated. We examined the transmission of Tomato yellow leaf cur/China virus （TYLCCNV） by the invasive Q biotype and the indigenous ZHJ2 biotype of the whitefly Bemisia tabaci, a plant viral vector, as well as the influence of TYLCCNV-infection of plants on the performance of the two whitefly biotypes. Both whitefly biotypes were able to acquire viruses from infected plants and retained them in their bodies, but were unable to transmit them to either tobacco or tomato plants. However, when the Q biotype fed on tobacco plants infected with TYLCCNV, its fecundity and longevity were increased by 7- and 1-fold, respectively, compared to those of the Q biotype fed on uninfected tobacco plants. When the ZHJ2 biotype fed on virus-infected plants, its fecundity and longevity were increased by only 2- and 0.5-fold, respectively. These data show that the Q biotype acquired higher beneficial effects from TYLCCNV-infection of tobacco plants than the ZHJ2 biotype. Thus, the Q biotype whitefly may have advantages in its invasion and displacement of the indigenous ZHJ2 biotype.

关键词： Bemisia tabaci Biotypes Begomovirus Vector-virus interaction Biological invasion

Effects of siRNA specific to the protein kinase CK2α on apoptosis of laryngeal carcinoma cells

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Chinese Medical Journal 2012年第9期125卷 1581-1585页

作者： WANG Jian-ting GONG shu-sheng Department of Otorhinolaryngology Head and Neck Surgery Beijing Chaoyang Hospital Capital Medical University Beijing 100020 China Department of Otorhinolaryngology Head and Neck Surgery Beijing Tongren Hospital Capital Medical University Beijing 100730 China

Background The relationship between apoptosis and tumors is a major focus in cancer research. RNA interference （RNAi） technology has emerged as a very potent tool to generate cellular knockdown phenotypes of a desired gene. The aim of this study was to explore the effect of siRNA specific to the protein casein kinase 2α （CK2α） on apoptosis of laryngeal carcinoma cells and to explore possible mechanisms.Methods An siRNA expression plasmid specific to CK2α, psiRNA-hH1neo-CK2α, and a non-specific siRNA expression plasmid, psiRNA-hH1neo-cont, were constructed and transfected into Hep-2 cells by a lipofectamine method. The mRNA and protein levels of CK2α in transfected cells were determined by reverse transcription-polymerase chain reaction （RT-PCR） and Western blotting analysis. Apoptosis was measured by Annexin V-fluorescein isothiocyanate （FITC）/ propidium iodide （PI） double-staining methods. The morphological changes to Hep-2 cells were observed under transmission electron microscopy （TEM）. The levels of Bcl-2 and Bax proteins were measured by Western blotting analysis.Results Levels of CK2α mRNA and protein were significantly decreased in the psiRNA-hH1neo-CK2α group compared to the other groups （P 〈0.05）. The apoptotic rate of the psiRNA-hH1neo-CK2α transfected group was significantly higher compared to that in the untransfected group and the siRNA-hH1neo-cont transfected group （25.66%±0.83%, 3.66%±0.43%, and 5.18%±0.22%）（P 〈0.05）. Compared with the untransfected group and the siRNA-hH1neo-cont transfected group, the psiRNA-hH1neo-CK2α transfected group presented with classical ultrastructural features of apoptosis, such as karyopyknosis, chromatic agglutination adjacent to the nuclear membrane, and apoptotic bodies. Compared with the other two groups, the level of Bcl-2 protein in the psiRNA-hH1neo-CK2α transfected group was decreased （0.20±0.09 vs. 0.72±0.16, 0.56±0.11, P 〈0.01）, while the Bax protein level was increased （0.81±0.17 vs. 0.26±0.12, 0.33±0.1

关键词： RNA interference small interfering RNA laryngeal neoplasms apoptosis casein kinase 2