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Two new species of Polyalthiopsis(Annonaceae) based on morphological characters and phylogenetic evidence,with a supplementary description of *** from China

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Plant Diversity 2023年第2期45卷 185-198页

作者： Bin Yang Jin-Yue Li Rui-Jie Yang Hong-Bo Ding Min Deng chun-fen xiao Yun-Juan Zuo Yun-Hong Tan Southeast Asia Biodiversity Research Institute Chinese Academy of Sciences&Center for Integrative ConservationXishuangbanna Tropical Botanical GardenChinese Academy of SciencesMengla 666303YunnanChina The Key Laboratory of Rare and Endangered Forest Plants of National Forestry and Grassland Administration&The Key Laboratory for Silviculture and Forest Resources Development of Yunnan Province Yunnan Academy of Forestry and GrasslandKunming 650201YunnanChina College of Life Science University of Chinese Academy of SciencesHuairou DistrictBeijing 101408China School of Ecology and Environmental Science Yunnan UniversityKunming 650091YunnanChina Center for Gardening and Horticulture Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMengla 666303YunnanChina

Two new species of Polyalthiopsis(Annonaceae),*** *** & Bin Yang from Guangxi and Yunnan Provinces and *** *** & Bin Yang from Yunnan Province,are described and *** is morphologically similar to *** in having narrowly elliptic-oblong,lemon to yellowish green petals,but differs by having obovoid monocarps,a higher number of leaf secondary veins,leaf blades usually widest above the middle,and a lower ratio of leaf blade length to *** is morphologically similar to *** in having axillary inflorescences,1-3(-4) flowers,elliptic leaves,and ellipticovate petals,but differs in the numbers of carpels per flower and ovules per *** molecular phylogenetic analysis using five plastid markers confirm that the two new species belong to the genus Polyalthiopsis and show clear interspecific divergences between *** and *** and between them and other species in the *** descriptions,colored photographs,and habitat and distribution data for the two new species are *** addition,the fruit morphology of *** is described for the first time,based on living *** distributions and a diagnostic key for all Polyalthiopsis species are also presented.

关键词： Annonaceae Morphology Polyalthia Polyalthiopsis Southeast Yunnan

Atomically precise nickel-sulfur clusters for efficient electrochemical 2,5-hydroxymethylfurfural oxidation

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Nano Research 2025年第1期18卷 140-148页

作者： fen Wang Lu-Yu Liu Sha-Sha Cui Ting-Ting Li xiao-Meng Yang Zhijuan Liu Yanyong Wang Henan Key Laboratory of Crystalline Molecular Functional Materials Henan International Joint Laboratory of Tumor Theranostical Cluster MaterialsGreen Catalysis Centerand College of ChemistryZhengzhou UniversityZhengzhou 450001China State Key Laboratory of Chem/Bio-sensing and Chemometrics College of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082China

Nickel sulfide exhibits excellent catalytic activity in the electrochemical 2,5-hydroxymethylfurfural oxidation reaction(HMFOR).However,due to the polydispersity of nanoparticles,it is difficult to establish a clear structure-activity relationship at the atomic *** this work,we have successfully synthesized atomically precise Ni_(6)(PET)_(12)and Ni_(4)(PET)_(8)clusters(PET:2-phenylethanethiol)for ***^(2+)and S_(2)-with atomic ratio of 1:2 was mainly existed in Ni_(6)(PET)_(12)and Ni_(4)(PET)_(8)to form Ni-S *** electrochemical test results have suggested both Ni_(6)(PET)_(12)and Ni_(4)(PET)_(8)displayed outstanding electrocatalytic ability for *** Ni_(6)(PET)_(12)exhibited better electrocatalytic ability than Ni_(4)(PET)_(8)with higher current density,lower overpotential and faster reaction *** superior electrochemical ability of Ni_(6)(PET)_(12)may be due to the enhanced adsorption towards HMF molecule with strong interaction towards hydroxyl group and furan ***,it found that the Ni^(2+)species in Ni_(6)(PET)_(12)could rapidly oxidized into Ni^(3+)species,which could spontaneously capture electron and proton from HMF for *** theoretical calculation demonstrated that the Ni_(6)(PET)_(12)process lower free energy barrier than Ni_(4)(PET)_(8)to display excellent electrocatalytic *** work is of great significance for designing efficient electrocatalysts for HMFOR.

关键词： atomically precise nickel nanoclusters 2 5-hydroxymethylfurfural electro-oxidation Ni3+species

针对性护理干预在动静脉内瘘钝针扣眼穿刺法中的应用效果

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中国当代医药 2018年第13期25卷 184-186页

作者：张春芬洪小英广东省揭阳市慈云医院护理部广东揭阳522031 南方医科大学第三附属医院护理部广东广州510630

目的探讨针对性护理干预在动静脉内瘘中的应用效果。方法选取2017年1~10月我院收治的100例动静脉内瘘维持血液透析患者作为研究对象,将2017年1~5月收治的50例患者作为对照组,采用常规护理;将2017年6~10月收治的50例患者作为观察组,采用... 详细信息

目的探讨针对性护理干预在动静脉内瘘中的应用效果。方法选取2017年1~10月我院收治的100例动静脉内瘘维持血液透析患者作为研究对象,将2017年1~5月收治的50例患者作为对照组,采用常规护理;将2017年6~10月收治的50例患者作为观察组,采用针对性护理干预。比较两组患者的一次性穿刺成功率、并发症发生率、下机压迫止血时间以及患者满意度。结果干预3个月后,观察组患者的一次性穿刺成功率(96.0%)高于对照组(82.0%),观察组并发症发生率(2.0%)低于对照组(14.0%),差异有统计学意义(P<0.05)。观察组患者的下机压迫止血时间[(10.58±2.14)min]短于对照组[(11.54±1.76)min],观察组患者的满意度评分[(8.76±1.32)分]高于对照组[(7.90±1.28)分],差异有统计学意义(P<0.05)。结论针对性护理干预能够提高钝针扣眼穿刺法的一次性穿刺成功率,缩短下机压迫止血时间,降低相关并发症以及提高患者的满意度,该方法值得在临床上推广应用。

关键词：针对性护理干预钝针扣眼穿刺法动静脉内瘘应用效果

新媒体环境下高职院校大学生思想政治教育探析

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南昌师范学院学报 2017年第3期38卷 114-118页

作者：洪旺元涂春芬肖芝兰江西现代职业技术学院江西南昌330095

高职院校大学生思想政治教育工作是职业教育的重要组成部分。在现代化的技术变革中,新的信息传播方式与传播模式已同传统的有了很大差异,极大地提升了信息传播的速度与效率。在新媒体这一背景下,如何利用新媒体的发展促进高职院校大学... 详细信息

高职院校大学生思想政治教育工作是职业教育的重要组成部分。在现代化的技术变革中,新的信息传播方式与传播模式已同传统的有了很大差异,极大地提升了信息传播的速度与效率。在新媒体这一背景下,如何利用新媒体的发展促进高职院校大学生思想政治教育工作实效与成果的提升是职业教育发展的一个重要课题。文章在对新媒体进行简要分析的基础上,对高职院校大学生思想政治教育工作的提升提出了几点思路。

关键词：新媒体高职院校思想政治教育

Impact of nutritional support on immunity,nutrition,inflammation,and outcomes in elderly gastric cancer patients after surgery

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World Journal of Gastrointestinal Surgery 2024年第7期16卷 2175-2182页

作者： xiao-Wan Chen xiao-chun Guo fen Cheng Department of Gastrointestinal Surgery Hubei Cancer HospitalWuhan 430079Hubei ProvinceChina Department of Gastroenterology The First People’s Hospital of Jiangxia DistrictWuhan 430200Hubei ProvinceChina

BACKGROUND Postoperative rehabilitation of elderly patients with gastric cancer has always been the focus of clinical *** the intervention by a full-course nutritional support team can have a positive impact on the postoperative immune function,nutritional status,inflammatory response,and clinical outcomes of this special population has not yet been fully *** To evaluate the impact of full-course nutritional support on postoperative comprehensive symptoms in elderly patients with gastric *** This is a retrospective study,including 60 elderly gastric cancer patients aged 70 years and above,divided into a nutritional support group and a control *** nutritional support group received full postoperative nutritional support,including individualized meal formulation,and intravenous and parenteral nutrition supplementation,and was regularly evaluated and adjusted by a professional nutrition *** control group received routine postoperative *** After intervention,the proportion of CD4+lymphocytes(25.3%±3.1%vs 21.8%±2.9%,P<0.05)and the level of immunoglobulin G(12.5 G/L±2.3 G/L vs 10.2 G/L±1.8 G/L,P<0.01)were significantly higher in the nutritional support group than in the control group;the changes in body weight(-0.5 kg±0.8 kg vs-1.8 kg±0.9 kg,P<0.05)and body mass index(-0.2±0.3 vs-0.7±0.4,P<0.05)were less significant in the nutritional support group than in the control group;and the level of C-reactive protein(1.2 mg/L±0.4 mg/L vs 2.5 mg/L±0.6 mg/L,P<0.01)and WBC count(7.2×10^(9)/L±1.5×10^(9)/L vs 9.8×10^(9)/L±2.0×10^(9)/L,P<0.01)were significantly lower in the nutritional support group than in the control *** addition,patients in the nutritional support group had a shorter hospital stay(10.3 d±2.1 d vs 14.8 d±3.6 d,P<0.05)and lower incidence of infection(15%vs 35%,P<0.05)in those of the control *** The intervention by the nutritional support team has a positive impact on postoperative immune function,

关键词： Elderly gastric cancer Postoperative Nutritional support Immune function Inflammatory response Clinical outcome

Stochastic Resonance in a Bacterium Growth System Subjected to Colored Noises

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Communications in Theoretical Physics 2009年第10期52卷 615-618页

作者： ZENG chun-Hua ZHOU xiao-feng TAO Shu-fen Faculty of Science Kunming University of Science and Technology Kunming 650093 China Department of Physics Qujing Normal University Qujing 655011 China

We present the logistic growth model to study the stochastic resonance （SR） in a bacterium growth system under the simultaneous action of two external multiplicative cross-correlation noises and periodic external forcing. The expression of the signal-to-noise ratio （SNR） for a bacterium growth system is derived by using the theory of SNR in the adiabatic limit. Based on SNR, we discuss the effects of self-correlation time τ1 and τ2, cross-correlation time 3-3 and cross-correlation strength λ on the SNR. It is found that the self-correlation time τ1 and τ2, and cross-correlation strength λ enhance the SR of the bacterium growth system, while cross-correlation time τ3 weakens the SR of the bacterium growth system.

关键词： stochastic resonance bacterium growth system colored noises

Hydrogenation behaviors and characteristics of bulk Ti-6Al-4V alloy at different isothermal temperatures

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Rare Metals 2019年第12期38卷 1131-1135页

作者： Long Pan chun-Ming Wang Su-fen xiao Yun-Gui Chen School of Aeronautics and Astronautics Sichuan UniversityChengdu 610065China College of Materials Science and Engineering Sichuan UniversityChengdu 610065China

The bulk Ti-6Al-4V alloy was hydrogenated at the temperature range of 723-973 K,and the hydrogen absorption characteristics and hydrogen absorption kinetics were *** results show that there are two types of hydrogen absorption characteristics at different *** hydrogen content decreases,and the time reaching reaction equilibrium is shorten with the isothermal hydrogenation temperature ***,the mechanism of the hydrogen absorption kinetics is different at different *** incubation period exists at the initial hydrogen absorption stage below 823 K,and K(a2)(the reaction rate constant of Stage 2)>>K(a1)(the reaction rate constant of Stage 1).And there is no incubation period over 823 K,K(a1)>>K(a2).

关键词： Bulk Ti-6Al-4V alloy Hydrogen content Hydrogen absorption kinetic Temperature

Simulation on an optimal combustion control strategy for 3-D temperature distributions in tangentially pc-fired utility boiler furnaces

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Journal of Environmental Sciences 2005年第2期17卷 305-308页

作者： WANGXi-fen ZHOUHuai-chun StateKeyLaboratoryofCoalCombustion HuazhongUniversityofScienceandTechnologyWuhan430074China

The control of 3-D temperature distribution in a utility boiler furnace is essential for the safe, economic and clean operation of pc-fired furnace with multi-burner system. The development of the visualization of 3-D temperature distributions in pc-fired furnaces makes it possible for a new combustion control strategy directly with the furnace temperature as its goal to improve the control quality for the combustion processes. Studied in this paper is such a new strategy that the whole furnace is divided into several parts in the vertical direction, and the average temperature and its bias from the center in every cross section can be extracted from the visualization results of the 3-D temperature distributions. In the simulation stage, a computational fluid dynamics(CFD) code served to calculate the 3-D temperature distributions in a furnace, then a linear model was set up to relate the features of the temperature distributions with the input of the combustion processes, such as the flow rates of fuel and air fed into the furnaces through all the burners. The adaptive genetic algorithm was adopted to find the optimal combination of the whole input parameters which ensure to form an optimal 3-D temperature field in the furnace desired for the operation of boiler. Simulation results showed that the strategy could soon find the factors making the temperature distribution apart from the optimal state and give correct adjusting suggestions.

关键词： tangentially-fired boilers combustion control three-dimensional temperature distributions adaptive genetic algorithm

Weighted composition operators from F(p,q,s) spaces to Bers-type spaces in the unit ball

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Applied Mathematics(A Journal of Chinese Universities) 2009年第4期24卷 462-472页

作者： LU xiao-fen Department of Mathematics Huzhou Teachers College Huzhou 313000 China

This paper deals with the boundedness and compactness of the weighted composition operators from the F（p, q, s） spaces, including Hardy space, Bergman space, Qp space, BMOA space, Besov space and α-Bloch space, to ... 详细信息

关键词： F(p q s) space Bers-type space weighted composition operator unit ball