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Research in Astronomy and Astrophysics 2024年第2期24卷 185-189页

作者： Ying-Ru Lin cai-Juan Pan Wei-Jian Lu School of Information Engineering Baise UniversityBaise 533000China School of Materials Science and Engineering Baise UniversityBaise 533000China

This paper explores the correlation between the fractional variation of the ionizing continuum and cⅣbroad absorption lines(bALs)with different ionization *** results reveal anti-correlations between fractional variation of the continuum and fractional equivalency width(EW)variation of the cⅣb ALs without AlⅢb AL/mini-bALs at corresponding velocities,providing evidence for the widespread influence of the ionizing continuum variability on the variation of ***,for cⅣbALs accompanied by AlⅢbAL/mini-bALs(LobAL groups),no significant correction is *** absence of such a correlation does not rule out the possibility that variations in these low-ionization lines are caused by ionizing continuum variability,but rather suggests the influence of b AL saturation to some *** saturation effect is reflected in the distribution of the fractional EW variation,where the cⅣbAL group accompanied by AlⅢbAL has a smaller standard deviation for the best-fitting Gaussian component than the two bAL groups without AlⅢb ***,the distribution of fractional variation of their continuum does not show any significant *** the saturation influence,another potential explanation for the lack of correlations in the LobAL groups may be the effects of other variability mechanisms besides the ionization change,such as clouds transiting across the line of sight.

关键词： (galaxies:)quasars absorption lines-(galaxies:)quasars general-galaxies active

A Modified Fuzzy c-Means Algorithm for brain MR Image Segmentation and bias Field correction

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Journal of computer Science & Technology 2016年第3期31卷 501-511页

作者： Wen-Qian Deng Xue-Mei Li Xifeng Gao cai-Ming Zhang School of computer Science and Technology Shandong University Jinan 250101 China Department of computer Science University of Houston Houston TX 77004 U.S.A.

In quantitative brain image analysis, accurate brain tissue segmentation from brain magnetic resonance image （MRI） is a critical step. It is considered to be the most important and difficult issue in the field of medical image processing. The quality of MR images is influenced by partial volume effect, noise, and intensity inhomogeneity, which render the segmentation task extremely challenging. We present a novel fuzzy c-means algorithm （RcLFcM） for segmentation and bias field correction of brain MR images. We employ a new gray-difference coefficient and design a new impact factor to measure the effect of neighbor pixels, so that the robustness of anti-noise can be enhanced. Moreover, we redefine the objective function of FcM （fuzzy c-means） by adding the bias field estimation model to overcome the intensity inhomogeneity in the image and segment the brain MR images simultaneously. We also construct a new spatial function by combining pixel gray value dissimilarity with its membership, and make full use of the space information between pixels to update the membership. compared with other state-of-the-art approaches by using similarity accuracy on synthetic MR images with different levels of noise and intensity inhomogeneity, the proposed algorithm generates the results with high accuracy and robustness to ***.

关键词： image segmentation fuzzy c-means bias field correction anti-noise

Dimensional Reduction of Eu-based Metal-Organic Framework as catalysts for Oxidation catalysis of c(sp^(3))-H bond

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chinese Journal of chemistry 2022年第4期40卷 480-486页

作者： Yin Zhang Wei-Dong Yu cai-Feng Zhao Jun Yan Junior Education Department Changsha Normal UniversityChangshaHunan 410100China college of Science Hunan University of Technology and BusinessChangshaHunan 410000China college of chemistry and chemical Engineering Central South UniversityChangshaHunan 410000China Hunan Institute of Nuclear Agricultural Science and Space breeding Hunan Academy of Agricultural ScienceChangshaHunon 410000China

comprehensive Summary Developing new catalysts for highly selectivity and conversion of saturated c(sp^(3))-H bonds is of great *** order to obtain catalysts with high catalytic performance,six Eu-based MOFs with different structural characteristics were obtained by using europium ions and different organic acid ligands,namely Eu-1~***-1,Eu-2 and Eu-3 featured three-dimensional structures,while Eu-4 and Eu-5 featured two-dimensional structures.

关键词： Metal-organic frameworks Heterogeneous catalysis Rare earths Dimensional reduction Selectively oxidize c(sp^(3))-H

Stable NiPt-Mo_(2)c active site pairs enable boosted water splitting and direct methanol fuel cell

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Green Energy & Environment 2023年第2期8卷 559-566页

作者： Jing Li Zhu Guo Wenjie Zhang Jing Guo Konggang Qu Weiwei cai Sustainable Energy Laboratory Faculty of Materials Science and ChemistryChina University of GeosciencesWuhan430074China Shandong Provincial Key Laboratory/collaborative Innovation center of chemical Energy Storage&Novel cell Technology Liaocheng UniversityLiaocheng252059China

Sluggish kinetics of methanol oxidation reaction(MOR)and alkaline hydrogen evolution reaction(HER)even on precious Pt catalyst impede the large-scale commercialization of direct methanol fuel cell(DMFc)and water electrolysis *** both of MOR and alkaline HER are related to water dissociation reaction(WDR),it is reasonable to invite secondary active sites toward WDR to pair with Pt for boosted MOR and alkaline HER activity on ***_(2)c and Ni species are therefore employed to engineer NiPt-Mo_(2)c active site pairs,which can be encapsulated in carbon cages,via an in-situ self-confinement *** activity of Pt in NiPt-Mo_(2)c@c toward HER is boosted to11.3 A mg_(pt)^(-1),33 times higher than that of Pt/***,MOR catalytic activity of Pt in NiPt-Mo_(2)c@c is also improved by 10.5 times and the DMFc maximum power density is hence improved by *** considering the great stability,NiPt-Mo_(2)c@c exhibits great practical application potential in DMFcs and water electrolysers.

关键词： Hydrogen evolution reaction Methanol oxidation reaction Direct methanol fuel cell Active site pair Self-confinement

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55c2钢制板弹簧及螺旋弹簧的等温淬火

制造技术与机床 1956年第15期 25-26+10页

作者： b.c.孟晓夫,王子馨技术科学候补博士讲师

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综采工作面顶板支护速度的研究

中州煤炭 1993年第5期 43-46页

作者： b.c.巴林诺夫袁汉春西安矿院

综采面前移支架支护顶板的速度是确定工作面支护质量的因素之一。采煤机截割速度比实际支护顶板的速度要快,因此,必须周期性停机,以便及时移架使顶板暴露面积不致过大,因而这就导致减少工作面的产量任务。工作面支护速度取决于一系列因... 详细信息

综采面前移支架支护顶板的速度是确定工作面支护质量的因素之一。采煤机截割速度比实际支护顶板的速度要快,因此,必须周期性停机,以便及时移架使顶板暴露面积不致过大,因而这就导致减少工作面的产量任务。工作面支护速度取决于一系列因素,其中主要的是开采地质条件,机组结构和工艺之间的相互关系,泵站和支架液压系统特性,以及操作控制的自动化程度。

关键词：综采工作面顶板支护速度支架

Near Resonant Electronic and Rotational Energy Transfer Ab（^1∏, J）＋c（^slj）→Ab（^1∏, J＇）＋c（^sl j＇）

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communications in Theoretical Physics 2005年第5期43卷 879-885页

作者： WANGWei-Li SONGPeng SHENYang MAFeng-cai DepartmentofPhysics LiaoningUniversityShenyang110036China

In our previous theoretical study, the theoretical model of thecollision-induced electronic and rotational energy transfer of Ab(~1Σ, J) + c(~sl_j) → Ab(~1Σ,J′) + c(~sl_(j′)) was presented. To further study the collision-induced electronic and rotationalenergy transfer theoretically on Ab( ~1Π, J) + c(~sl_j) → Ab( ~1Π, J′) + c(~sl_(j′)), atheoretical model is presented, based on the time-dependent first-order born approximation, takinginto account the anisotropic Lennard-Jones interaction potential and 'straight-line' trajectoryapproximation. The changing tendency of the transitional probabilities with the anisotropicparameter is discussed.

关键词： quantum interference rotational energy transfer near resonant electronic

Personalized medicine in non-small cell lung cancer: a review from a pharmacogenomics perspective

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Acta Pharmaceutica Sinica b 2018年第4期8卷 530-538页

作者： Wenxiao Jiang Guiqing cai Peter c.Hu Yue Wang Department of Genetics and Genomic Sciences Icahn School of Medicine at Mount Sinai The University of Texas MD Anderson cancer center Department of Molecular and Human Genetics Baylor College of Medicine

Non-small cell lung cancer is a prevalent and rapidly-expanding challenge to modern medicine. While generalized medicine with traditional chemotherapy yielded comparatively poor response rates and treatment results, the cornerstone of personalized medicine using genetic profiling to direct treatment has exalted the successes seen in the field and raised the standard for patient treatment in lung and other cancers. Here, we discuss the current state and advances in the field of personalized medicine for lung cancer, reviewing several of the mutation-targeting strategies that are approved for clinical use and how they are guided by patient genetic information. These classes include inhibitors of tyrosine kinase(TKI), anaplastic lymphoma kinase(ALK), and monoclonal antibodies. Selecting from these treatment plans and determining the optimal dosage requires in-depth genetic guidance with consideration towards not only the underlying target genes but also other factors such as individual metabolic capability and presence of resistance-conferring mutations both directly on the target gene and along its cascade(s).Finally, we provide our viewpoints on the future of personalized medicine in lung cancer, including target-based drug combination, mutation-guided drug design and the necessity for data of population genetics, to provide rough guidance on treating patients who are unable to get genetic testing.

关键词： Personalized medicine Non-small cell lung cancer Pharmacogenomics Tyrosine kinase Anaplastic lymphoma kinase Inhibitor Monoclonal antibody

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Magnetic/Magnetostrictive Properties Together with Resistivity and corrosion behaviors of coFe_2 and Its composite with coFe_2N

1987年

作者：郭(Kuo b.c.)

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Journal of Materials Science & Technology 2017年第7期33卷 744-750页

作者： b.Q.Geng Y.Q.Ma M.Wang Z.L.Ding W.H.Song b.c.Zhao Key Laboratory of Materials Physics Institute of Solid State Physics Chinese Academy of Sciences Hefei 230031 China

The coFe_2alloy（cF） was prepared by reducing coFe_2O_4 in the H_2 ambient. Subsequently the cF sample was nitrided in the NH_3 atmosphere to produce the composite of coFe_2N and coFe_2. The magnetostriction, thermal expansion, resistivity and corrosion resistance of cF sample and the nitrided sample（cFN）at 1000？c were investigated. The saturation magnetostriction coefficiency λ_s and thermal expansion coefficient ？ at 300 K for the nitrided cFN were 50 ppm and 10 ppm/K, respectively, approximately equal to those for the cF sample. However, compared with cF, cFN presents a decrease in temperature coefficient R_λ（300 K） of magnetostriction by 11%. The smaller resistivity and improved corrosion resistance in the H_2SO_4 solution may expand the applications of the coFe_2 in the fields needing lower resistivity or in the acidic environment.

关键词： coFe alloy coFe_2N alloy Magnetostriction Resistivity corrosion resistance