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不同剂量右美托咪定复合舒芬太尼用于胸腰椎骨折手术的效果比较

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中国基层医药 2025年第1期32卷 88-92页

作者：姚娜王艳河南省洛阳正骨医院(河南省骨科医院)麻醉科洛阳471000

目的比较不同剂量右美托咪定复合舒芬太尼用于胸腰椎骨折手术的效果。方法采用随机对照研究,选取河南省洛阳正骨医院(河南省骨科医院)2022年5月至2023年5月收治的行全身麻醉手术的胸腰椎骨折患者100例为研究对象,按照随机数字表法分为... 详细信息

目的比较不同剂量右美托咪定复合舒芬太尼用于胸腰椎骨折手术的效果。方法采用随机对照研究,选取河南省洛阳正骨医院(河南省骨科医院)2022年5月至2023年5月收治的行全身麻醉手术的胸腰椎骨折患者100例为研究对象,按照随机数字表法分为右美托咪定低剂量组(n=50)和高剂量组(n=50)。高剂量组输注右美托咪定注射液0.8μg·kg^(-1)·h^(-1)+舒芬太尼0.02μg·kg^(-1)·h^(-1),低剂量组输注右美托咪定注射液0.5μg·kg^(-1)·h^(-1)+舒芬太尼0.02μg·kg^(-1)·h^(-1)。比较两组临床指标、氧化损伤、血小板活化指标、不良反应发生率。结果拔管时、拔管后20 min,高剂量组视觉模拟评分法评分分别为(4.12±0.05)分、(2.65±0.12)分,均低于低剂量组的(5.23±0.12)分、(4.23±0.52)分,Ramsay评分分别为(5.02±0.36)分、(5.65±0.12)分,均高于低剂量组的(4.01±0.23)分、(4.36±0.23)分(t=-60.38、-20.94、16.72、35.16,均P<0.001)。术后24 h,高剂量组血清谷胱甘肽过氧化物酶、超氧化物歧化酶分别为(412.23±52.12)U/L、(98.65±10.23)U/L,均低于对照组的(452.36±50.23)U/L、(114.25±11.21)U/L(t=-4.74、-7.27,均P<0.05);高剂量组血栓素A2、血小板颗粒膜蛋白140水平分别为(362.23±20.32)ng/L、(20.12±2.56)μg/L,均低于对照组的(412.03±21.23)ng/L、(25.64±3.01)μg/L(t=-11.98、-9.88,均P<0.05)。高剂量组不良反应发生率为12%(6/50),低于低剂量组的30%(15/50)(χ^(2)=4.88,P<0.001)。结论高剂量右美托咪定麻醉可降低胸腰椎骨折手术患者的氧化损伤反应,抑制血小板活化,改善临床指标,减少不良反应的发生。

关键词：脊柱骨折胸椎腰椎麻醉,全身剂量效应关系,药物右美托咪定舒芬太尼

新麦草独脚金内酯合成相关基因CCD7的克隆及表达分析

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草地学报 2025年第2期33卷 382-390页

作者：艾芊云岚任晓敏姚娜内蒙古农业大学草业学院内蒙古呼和浩特010018 草地资源教育部重点实验室内蒙古呼和浩特010011

植物CCD7基因参与合成独脚金内酯。为研究新麦草[Psathyrostachys juncea(Fisch.)Nevski]CCD7基因的功能,本研究以多分蘖型新麦草和少分蘖型新麦草的分蘖节为材料,通过Rna-seq及荧光定量PCR分析CCD7基因在新麦草中的表达量,通过构建pcam... 详细信息

植物CCD7基因参与合成独脚金内酯。为研究新麦草[Psathyrostachys juncea(Fisch.)Nevski]CCD7基因的功能,本研究以多分蘖型新麦草和少分蘖型新麦草的分蘖节为材料,通过Rna-seq及荧光定量PCR分析CCD7基因在新麦草中的表达量,通过构建pcambia1300-cYFP-CCD7过表达载体,分析新麦草CCD7基因在烟草叶片中的亚细胞定位;通过生物信息学分析预测CCD7基因的基本功能。结果显示,新麦草CCD7基因序列克隆全长为1638 bp,亚细胞定位新麦草CCD7基因在烟草叶片细胞的叶绿体中表达;表达量分析表明新麦草的分蘖数量与该基因的表达量呈现负相关关系。预测新麦草CCD7保守结构域的范围是第13到第544个氨基酸,该基因在9个近缘物种中功能保守,编码蛋白性质相近,新麦草CCD7蛋白的丝氨酸磷酸化位点最有可能是蛋白发挥功能的磷酸化位点。

关键词：新麦草 CCD7 过表达载体亚细胞定位基因克隆

海陆生态枢纽:我国沿海滩涂湿地生态服务与可持续利用

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草地学报 2025年第1期33卷 1-9页

作者：甘露周卫严学兵姚娜尹飞虎扬州大学动物科学与技术学院江苏扬州225009 中国农业科学院农业资源与农业区划研究所北京100081 河北大学生态环境系河北保定071000 新疆农垦科学院农田水利与土壤肥料研究所新疆石河子832000

沿海滩涂湿地是全球重要的生态系统,具备碳汇、生物多样性保护及环境调节功能。然而,气候变化与人类活动共同导致滩涂湿地面积持续缩减及生态功能退化。本文系统梳理了我国沿海滩涂地的自然演替与变迁特征,详细分析了近年来各省份沿海... 详细信息

沿海滩涂湿地是全球重要的生态系统,具备碳汇、生物多样性保护及环境调节功能。然而,气候变化与人类活动共同导致滩涂湿地面积持续缩减及生态功能退化。本文系统梳理了我国沿海滩涂地的自然演替与变迁特征,详细分析了近年来各省份沿海滩涂的年际面积变化动态,以及海草床、盐沼和植被滩涂等典型类型。同时,评估了沿海滩涂在碳汇、生物多样性保护和环境调节等方面的现状、挑战及其多维度生态功能。最后,以江苏、山东和广东为案例区域,探讨了在多元利益主体背景下沿海滩涂的可持续利用与区域应对策略。研究结果表明:滩涂的碳汇能力和生物多样性保护功能与其面积变化密切相关,而气候变化与人类干扰是影响滩涂生态功能的主要驱动因素。未来应基于科学规划与适应性管理,推进滩涂湿地的生态修复与功能提升,以支持我国沿海滩涂地的可持续利用。

关键词：沿海滩涂碳汇生态功能气候变化可持续性

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Identification of in situ Generated Iron-Vacancy Induced Oxygen Evolution Reaction Kinetics on Cobalt Iron Oxyhydroxide

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Chinese Journal of Chemistry 2024年第4期42卷 343-350页

作者： na yao Juan Zhu Hongnan Jia Hengjiang Cong Wei Luo College of Chemistry and Molecular Sciences Wuhan UniversityWuhanHubei430072 China

Developing highly efficient and low-cost electrocatalysts towards oxygen evolution reaction(OER)is essential for practical application in water electrolyzers and rechargeable metal-air *** Fe-based oxyhydroxides are regarded as state-of-the-art non-noble OER electrocatalysts,the origin of performance enhancement derived from Fe doping remains a hot topic of considerable ***,we demonstrate that in situ generated Fe vacancies in the pristine CoFeOOH catalyst through a pre-conversion process during alkaline OER result from dynamic Fe dissolution,identifying the origin of Fe-vacancy-induced enhanced OER *** functional theory(DFT)calculations and experimental results including X-ray absorption fine-structure spectroscopy,in situ UV-Vis spectroscopy,and in situ Raman spectroscopy reveal that the Fe vacancies could significantly promote the d-band center and valence states of adjacent Co sites,alter the active site from Fe atom to Co atom,accelerate the formation of high-valent active Co^(4+)species,and reduce the energy barrier of the potential-determining step,thereby contribute to the significantly enhanced OER performance.

关键词： CoFe oxyhydroxide Oxygen evolution reaction Fe vacancy Electrocatalysis Kinetics Reaction mechanisms

Nitridation-induced metal-organic framework nanosheet for enhanced water oxidation electrocatalysis

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Journal of Energy Chemistry 2022年第1期31卷 531-537,I0014页

作者： na yao Hongnan Jia Zhengyin Fan Lu Bai Wei Xie Hengjiang Cong Shengli Chen Wei Luo College of Chemistry and Molecular Sciences Wuhan UniversityWuhan 430072HubeiChina College of Chemistry Nankai UniversityTianjin 300071China Suzhou Institute of Wuhan University Suzhou 215123JiangsuChina

We report the synthesis of nitridation-induced NiFe-MOF through post-synthetic functionalization of terminal ligand in NiFe-MOF *** directly identify the key factor of amino ligand in N-NiFe-MOF for boosting the OER performance through combining single X-ray crystallographic characterization and in-situ Raman tracking,as well as ex-situ spectroscopy *** functional theory(DFT)calculations and experime ntal results indicate irreversible phase rec on structio n from amino ligand oxidation prior to OER could lead to the optimized ΔG_(-O),resulting in the remarkable OER performance with an overpotential of 258 mV to obtain the current density of 100 mA cm^(-2) in 1.0 M KOH *** work will provide new strategy for rational designing advanced MOF-based OER electrocatalysts.

关键词： Mt ridation-induced MOF nanosheets In-sicu oxidation OER DFT calculation

Ni_(3)N Modified MOF Heterostructure with Tailored Electronic Structure for Efficient Overall Water Splitting

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Chinese Journal of Structural Chemistry 2022年第8期41卷 31-36页

作者： Hongnan Jia na yao Juan Zhu Yujia Liu Yunhao Lao Hengjiang Cong Wei Luo College of Chemistry and Molecular Sciences Wuhan UniversityWuhan 430072China Suzhou Institute of Wuhan University SuzhouJiangsu 215123China

Exploring bifunctional electrocatalysts with high-efficiency and stability toward overall water splitting is desirable for sustainable energy technologies,yet ***,we report the construction of Ni_(3)N on the surface of Ni-MOF-74 through an in-situ nitriding *** obtained Ni-MOF-74/Ni_(3)N exhibits remarkable HER activity with an overpotential of 73 mV to deliver 10 mA cm^(-2).Theoretical calculations and experimental study demonstrate the electron transport between Ni_(3)N and Ni-MOF-74,leading to the improved H_(2)O adsorption,optimized hydrogen adsorption,and increased H_(ad)diffusion,which contributes to the enhanced HER ***,the obtained Ni-MOF-74/Ni_(3)N also possesses outstanding activity toward OER and overall water splitting.

关键词： hydrogen evolution reaction Ni_(3)N MOF DFT calculation water splitting

Preparation of new hybrid organic/inorganic polymeric chiral stationary phases for ligand-exchange chromatography

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Chinese Chemical Letters 2007年第10期18卷 1250-1252页

作者： Rui Juan Song Yu Fu na yao Yuan De Long Tian Bao Huang Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 China Graduate School of the Chinese Academy of Sciences Beijing 100049 China

Three new hybrid organic/inorganic polymeric ligand-exchange chiral stationary phases were developed by radical chain transfer reaction and surface grafting on silica gel, and successfully used for the enantioseparations of DL-amino acids and DL-hydroxyl adds. The resolutions were achieved by using water containing 2.0 × 10^-4 mol/L of CuAc2 as a mobile phase, column temperature of 40 ℃, flow rate of 1.0 mL/min and detection at UV 254 nm. The elution order of D-isomer before L-isomer was observed for all DL-amino acids resolved except DL-Pro.

关键词： Chiral stationary phase Ligand-exchange chromatography DL-Hydroxyl acid Surface grafting DL-Amino acid

Insight into Hydrolytic Stability and Tribological Properties of B-N Coordination Tung Oil-Based Lubricant Additive in Water

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Journal of Renewable Materials 2023年第3期11卷 1367-1381页

作者： na yao Haiyang Ding Mei Li Pengcheng Wang Shouhai Li Lina Xu Xiaohua Yang Institute of Ecological Conservation and Restoration CAFBeijing100091China Institute of Chemical Industry of Forest Products CAF、National Engineering Laboratory for Biomass Chemical Utilization、Key Laboratory of Chemical Engineering of Forest ProductsNational Forestry and Grassland Administration、Key Laboratory of Biomass Energy and MaterialJiangsu Province、Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest ResourcesNanjing210042China School of Chemical Engineering Nanjing University of Science&TechnologyNanjing210094China

A tung oil-based boron-nitrogen coordination polymer(TWE-BN)was specially designed and synthesized as a highly efficient water-based lubricant additive,which has been beneficial to both energy conservation and conducive to environmental *** hydrolysis stability and tribological properties in water were *** better research the lubricating properties,and thus to understand the interaction between the surface and the lubricating ***,both experimental and theoretical computations based on density functional theory(DFT)were *** addition of TWE-BN reduces the water friction coefficient and wear scar diameter,and the maximum non-seizure load increased from 93 to 726 ***,the anti-corrosion ability on copper was classified as 1b *** stainless-steel surface was analyzed using scanning electron microscopy(SEM)and X-ray photoelectron spectroscopy(XPS).In hydrolytic stability testing,TWE-BN was better than nitrogen-free tung oil-based lubricant additive(TWE-B)and remained non-hydrolyzed for at least 15 days,implying the feasibility of tung oil-based boron-nitrogen coordination as highly effective and hydrolytic stability lubricant additives.

关键词： Tribological properties tung oil borate hydrolytic stability boron-nitrogen coordination

Multifunctional Lubricant Additive Improves Lubrication and Antioxidation Properties of Tung Oil

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Journal of Renewable Materials 2023年第7期11卷 3115-3128页

作者： na yao Haiyang Ding Mei Li Shouhai Li Lina Xu Xiaohua Yang Institute of Chemical Industry of Forest Products CAFNational Engineering Laboratory for Biomass Chemical UtilizationKey Laboratory of Chemical Engineering of Forest ProductsNational Forestry and Grassland AdministrationKey Laboratory of Biomass Energy and Material of Jiangsu ProvinceJiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest ResourcesNanjing210042China Institute of Ecological Conservation and Restoration CAFBeijing100091China

It is of considerable significance to develop efficient and environmentally friendly machinery lubricant additives because of the increasing depletion of petrochemical resources and severe environmental ***,we proposed a facile strategy to synthesize a multifunctional vegetable oil-based lubricant via the lignin derivative vanillin coupled to amine and diethyl phosphite to produce a lubricating additive with both extreme pressure and antioxidant *** with pure tung oil,the lubricating and antioxidant performance of tung oil is significantly improved after adding *** the 1.0 wt%additive to the tung oil reduced the friction wear coefficient and the volume,and the oxidation induction time was much longer than pure tung oil.

关键词： Tung oil lubricant additives antioxidation multifunction