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Experimental Study of Mooring Type Effect on the Hydrodynamic Characteristics of VLFS

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China Ocean Engineering 2022年第1期36卷 155-166页

作者： FENG Ming-wei SUN Zhao-chen liang Shu-xiu LI Zhi LV Xuan JIA Song-lin HUXin-yue State Key Laboratory of Coastal and Offshore Engineering Dalian University of TechnologyDalian 116024China

Mooring system is a significant part of very large offshore floating structures(VLFS).In this paper,a single module pontoon type VLFS model considering four mooring types is studied through physical model tests to determine the effects of mooring conditions on the hydroelastic response,mooring force,incident coefficient,reflection coefficient and energy dissipation *** mooring cables are symmetrically arranged on both sides of the *** floating body model satisfies the similarity of stiffness and gravity,while the cable satisfies the similarity of elasticity and *** results show that the effect of mooring type on mooring force is greater than that on hydroelastic *** the initial tension of the mooring cable will reduce the amplitude of the leeward of the VLFS *** mooring angle of the mooring cable will affect the maximum mooring force and the initial tension of the mooring line will affect the wave period in which the maximum mooring force *** transmission coefficient and wave energy dissipation coefficient will change regularly with different mooring *** results may provide a reference to facilitate the mooring design of VLFS.

关键词： VLFS hydroelastic response mooring system 3D experimental test mooring force wave reflection coefficient wave transmission coefficient wave dissipation coefficient

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增施肥水对山地文玩核桃生长结果的影响

北方果树 2024年第3期 21-22页

作者：李明章王玉东郝建军杨万林刘佃芳刘建梁河北省涿鹿县南山区文玩核桃研究所河北涿鹿075636 涿鹿县南山区区公所河北涿鹿075636 河北涿鹿宝峰寺林业学校河北涿鹿075636

文玩核桃是河北北部山区主要的经济林树种,是乡村振兴的主导产业,已成为我区农民的致富产业。因当地大部分为山地,给肥水管理带来困难,严重影响果核的产量和质量。作者于2020、2023年在山地文玩核桃上进行科学的肥水管理,其坐果率和果... 详细信息

文玩核桃是河北北部山区主要的经济林树种,是乡村振兴的主导产业,已成为我区农民的致富产业。因当地大部分为山地,给肥水管理带来困难,严重影响果核的产量和质量。作者于2020、2023年在山地文玩核桃上进行科学的肥水管理,其坐果率和果个明显增大,收到较好的效果。

关键词：文玩核桃肥水管理品质

A Stiffness-Tunable Composite with Wide Versatility and Applicability Based on Low-Melting-Point Alloys

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Journal of Bionic Engineering 2023年第6期20卷 2786-2796页

作者： Jiawei Xiong Bo Sun Chunbao Liu Konghua Yang Yuchao Luo Yunhong liang Zhiwu Han Lei Ren Zhaohua lin School of Mechanical and Aerospace Engineering Jilin UniversityChangchun130022China Key Laboratory of Bionic Engineering Ministry of EducationJilin UniversityChangchun130022China Liaoning Academy of Materials Shenyang110167China Department of Mechanical Aerospace and Civil EngineeringUniversity of ManchesterManchesterM139PLUK

Flexible materials are essential in bionic fields such as soft ***,the lack of stiffness limits the mechanical performance of soft robots and makes them difficult to develop in many extreme working conditions,such as lifting and excavation *** address this issue,we prepared a stiffness-tunable composite by dispersing low-melting-point alloy into thermosetting epoxy resin.A dramatic and rapid change in stiffness was achieved by changing the state of matter at lower temperatures,and accurate control of the composite modulus was achieved by controlling the *** the alloy content is at 30vol%,the tensile modulus changes 41.6 times,while the compressive modulus changes 58.9 *** applying the composite to a flexible actuator,the initial stiffness of the actuator was improved by 124 times,reaching 332 mN/*** addition,the use of stiffness-tunable materials in the wheel allowed for timely changes in the grounding area to improve *** flexible materials with manageable mechanical properties have wide applicability in fields including bionics,robotics,and *** findings provide a new approach to designing and developing flexible materials with improved stiffness and controllability.

关键词： Stiffness-tunable composite Manageable mechanical properties Flexible actuator

Human umbilical cord mesenchymal stem cells to treat spinal cord injury in the early chronic phase: study protocol for a prospective, multicenter, randomized, placebo-controlled, single-blinded clinical trial

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Neural Regeneration Research 2020年第8期15卷 1532-1538页

作者： Yang Yang Mao Pang Yu-Yong Chen liang-Ming Zhang hao Liu Jun Tan Bin Liu Li-Min Rong Department of Spine Surgery the Third Affiliated Hospital of Sun Yat-sen UniversityGuangdong Provincial Center for Quality Control of Minimally Invasive Spine SurgeryGuangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine SurgeryGuangzhouGuangdong ProvinceChina Department of Orthopedics West China Hospital of Sichuan UniversityChengduSichuan ProvinceChina Department of Orthopedics Shanghai East HospitalTongji University School of MedicineShanghaiChina

Human umbilical cord mesenchymal stem cells(hUC-MSCs)support revascularization,inhibition of inflammation,regulation of apoptosis,and promotion of the release of beneficial ***,they are regarded as a promising candidate for the treatment of intractable spinal cord injury(SCI).Clinical studies on patients with early chronic SCI(from 2 months to 1 year post-injury),which is clinically common,are rare;therefore,we will conduct a prospective,multicenter,randomized,placebo-controlled,single-blinded clinical trial at the Third Affiliated Hospital of Sun Yat-sen University,West China Hospital of Sichuan University,and Shanghai East Hospital,Tongji University School of Medicine,*** trial plans to recruit 66 early chronic SCI *** patients will undergo randomization at a 2:1 ratio to two arms:the observation group and the control *** in the observation group will receive four intrathecal transplantations of stem cells,with a dosage of 1×106/kg,at one calendar month *** in the control group will receive intrathecal administrations of 10 mL sterile normal saline in place of the stem cell *** safety will be assessed by the analysis of adverse events and laboratory *** American Spinal Injury Association(ASIA)total score will be the primary efficacy endpoint,and the secondary efficacy outcomes will be the following:ASIA impairment scale,International Association of Neural Restoration-Spinal Cord Injury Functional Rating Scale,muscle tension,electromyogram,cortical motor and cortical sensory evoked potentials,residual urine volume,magnetic resonance imaging–diffusion tensor imaging,T cell subtypes in serum,neurotrophic factors and inflammatory factors in both serum and cerebrospinal *** evaluations will be performed at 1,3,6,and 12 months following the final intrathecal *** the entire study procedure,all adverse events will be reported as soon as they are *** trial is d

关键词： clinical study early chronic phase efficacy human umbilical cord mesenchymal stem cell multicenter trial prospective study randomized controlled trial safety spinal cord injury study protocol

PPOS促排卵方案对颗粒细胞芳香化酶CYP19A1和ERβ受体表达的自身对照研究

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广东医学 2024年第4期45卷 494-498页

作者：谭小方刘霖马薇薇李浩丁家怡南通大学附属南通妇幼保健院生殖医学中心江苏南通226018 南通大学医学院江苏南通226018

目的研究第一周期行黄体期减量长方案行体外受精-胚胎移植(IVF-ET)促排卵过程中黄体生成素(LH)偏低(扳机日LH0.05),而PPOS方案的扳机日LH水平、正常受精(2PN)数、正常受精率、优质胚胎率显著高于长方案(P<0.05)。PPOS组中CYP19A1和ERβ... 详细信息

目的研究第一周期行黄体期减量长方案行体外受精-胚胎移植(IVF-ET)促排卵过程中黄体生成素(LH)偏低(扳机日LH0.05),而PPOS方案的扳机日LH水平、正常受精(2PN)数、正常受精率、优质胚胎率显著高于长方案(P<0.05)。PPOS组中CYP19A1和ERβ受体的mRNA表达水平均高于对照组,差异有统计学意义(P<0.001)。与mRNA表达水平结果相一致,PPOS组中CYP19A1和ERβ受体的蛋白表达水平均高于对照组,差异有统计学意义(P<0.05)。结论第1周期行长方案促排卵过程中LH偏低的RIF患者中,第2周期改用PPOS方案组后,扳机日的LH水平明显上升,同时壁层颗粒细胞ERβmRNA水平和蛋白水平均显著高于长方案组,CYP19A1 mRNA水平和蛋白水平均也显著高于长方案组,改用PPOS方案后,LH水平有所提高,改善了患者的卵子质量,进而提高了胚胎质量。

关键词：孕激素促排卵颗粒细胞体外受精-胚胎移植

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亚热带地区植被指数与气象因子相关性分析

红河学院学报 2024年第2期22卷 141-144页

作者：李刚施元浩何雨芩赵林苑红河州气象局云南蒙自661199 红河县气象局云南红河654400 云南省气候中心云南昆明650100

选用红河州13县市近20年气候资料和卫星监测资料为研究对象,运用相关分析、回归分析方法研究了气象因子对森林植被的影响情况。结果表明,在全球变暖大背景下,红河州森林植被总体为增长趋势,与气象条件存在1年的滞后相关;亚热带地区植被... 详细信息

选用红河州13县市近20年气候资料和卫星监测资料为研究对象,运用相关分析、回归分析方法研究了气象因子对森林植被的影响情况。结果表明,在全球变暖大背景下,红河州森林植被总体为增长趋势,与气象条件存在1年的滞后相关;亚热带地区植被指数与日照、气温存在一定的相关性,特别是中亚热带和南亚温带之间有差异,即较热的地区过高的热量不利于森林生长,而较冷地区存在热量不足情况;植被指数与水分条件的相关程度最高,通过建立积温和降水量的回归方程,可以对来年的植被总量进行预报估算。

关键词：亚热带植被指数气象因子相关性

Star Formation and Chemical Enrichment for Globular Clusters

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Chinese Physics Letters 2001年第11期18卷 1536-1538页

作者： lin Qhig SHU Cheng-Gang CHANG Rui-Xiang Zhao Jun-liang Shanghai Astronomical Observatory Chinese Academy of SciencesShanghai 200030

A model considering gas outflows due to supernova explosions is developed for the star formation and chemical enrichment for the globular clusters (GCs) in the Milky Way galaxy. Through Monte Carlo simulations, the observed global properties of GCs can be well reproduced, including the metallicity distribution, no-correlation between cluster masses and galactocentric distances, etc. The predicted mass function of the parent clouds for the observed GCs at present day can be well described as a power law with the index of-1.8, which is consistent with the current observations for the molecular clouds.

关键词： galaxy observed clouds

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刺角瓜资源研究进展

热带农业科学 2024年第4期44卷 109-115页

作者：张浩梁其干张学军符小发王敏王吉明新疆农业科学院海南三亚农作物育种试验中心海南三亚572000 三亚明珠甜瓜西瓜展示评价研究中心海南三亚572000 新疆农业科学院哈密瓜研究中心新疆乌鲁木齐830091 海南省农业科学院蔬菜研究所海南海口570100 中国农业科学院郑州果树研究所河南郑州450009

刺角瓜不仅食药同源,含有VC、氧化剂、生物碱等多种有益物质,而且是葫芦科中具有抗根结线虫、病毒病、枯萎病等病害的特色植物资源。近年来在刺角瓜活性化合物和抗性基因挖掘取得了较大成就,具有潜在应用价值。本文重点从刺角瓜食药功... 详细信息

刺角瓜不仅食药同源,含有VC、氧化剂、生物碱等多种有益物质,而且是葫芦科中具有抗根结线虫、病毒病、枯萎病等病害的特色植物资源。近年来在刺角瓜活性化合物和抗性基因挖掘取得了较大成就,具有潜在应用价值。本文重点从刺角瓜食药功能、抗性资源筛选、优异基因及代谢方面阐述了刺角瓜研究进展,基于研究现状,对刺角瓜资源利用提出展望。

关键词：刺角瓜活性营养物质抗性资源

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Carbon Nanofibrous Sponge Made from Hydrothermally Generated Biochar and Electrospun Polymer Nanofibers

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Advanced Fiber Materials 2020年第2期2卷 74-84页

作者： Tao Xu Xianfu Li Zhipeng liang Vinod S.Amar Runzhou Huang Rajesh V.Shende hao Fong Department of Chemistry and Applied Biological Sciences South Dakota School of Mines and TechnologyRapid CitySD 57701USA School of Biological and Chemical Engineering Anhui Polytechnic UniversityWuhu 241000AnhuiChina Department of Chemical and Biological Engineering South Dakota School of Mines and TechnologyRapid CitySD 57701USA

The objective of this study was to convert biochar,a byproduct generated from the hydrothermal process(in oxygen-limited environment)of biomass(e.g.,corn stover),into value-added *** specific,three-dimensional(3D)biochar-containing precursor sponge,which was made by using electrospun polymer nanofibers as skeleton support,was fabricated via an innovative *** weight ratio of biochar to polymer(in the precursor sponge)was 2/1,and it appeared that the biochar weight ratio could be further *** heat treatments(i.e.,stabilization in air and carbonization in argon),the precursor sponge was converted into carbon nanofibrous sponge that had the porosity of~90 vol%,the BET surface area of~51.7 m^(2) g^(−1),and the carbon content of~95 wt%;and it was mechanically elastic/*** electrochemical study indicated that,the carbon nanofibrous sponge could be utilized for making supercapacitor electrode with excellent rate capability and high kinetic *** study would not only demonstrate a high-value application of hydrothermally generated biochar,but also provide a facile while novel approach for the fabrication of carbon nanofibrous sponge which could be potentially used for various applications(particularly the energy storage application).

关键词： Electrospinning 3D nanofibrous sponge Hydrothermally generated biochar Supercapacitor electrode