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An efficient Boron Source Activation Strategy for the Low‑Temperature Synthesis of Boron Nitride Nanotubes

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Nano-Micro Letters 2025年第1期17卷 548-558页

作者： Ying Wang Kai Zhang Liping Ding Liyun Wu Songfeng e Qian He Nanyang Wang Hui Zuo Zhengyang Zhou feng Ding Yue Hu Jin Zhang Yagang Yao National Laboratory of Solid State Microstructures College of Engineering and Applied SciencesJiangsu Key Laboratory of Artificial Functional Materialsand Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093People’s Republic of China School of electronic Information and Artificial Intelligence Shaanxi University of Science&TechnologyXian 710000People’s Republic of China College of Bioresources Chemical and Materials engineering Shaanxi University of Science&TechnologyXian 710000People’s Republic of China Key Laboratory of Carbon Materials of Zhejiang Province College of Chemistry and Materials EngineeringWenzhou UniversityWenzhou 325000People’s Republic of China Shenzhen Institutes of Advanced Technology Chinese Academy of SciencesShenzhen 518000People’s Republic of China College of Chemical and Molecular engineering Peking UniversityBeijing 100871People’s Republic of China

Lowering the synthesis temperature of boron nitride nanotubes(BNNTs)is crucial for their *** primary reason for adopting a high temperature is to enable the effective activation of highmelting-point solid *** this study,we developed a novel approach for efficiently activating boron by introducing alkali metal compounds into the conventional MgO–B *** approach can be adopted to form various low-melting-point AM–Mg–B–O growth *** growth systems have improved catalytic capability and reactivity even under low-temperature conditions,facilitating the synthesis of BNNTs at temperatures as low as 850℃.In addition,molecular dynamics simulations based on density functional theory theoretically demonstrate that the systems maintain a liquid state at low temperatures and interact with N atoms to form BN *** findings offer novel insights into the design of boron activation and are expected to facilitate research on the low-temperature synthesis of BNNTs.

关键词： Boron nitride nanotubes Low-temperature Boron activation Density functional theory

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地壳表层砷的循环与污染地下水模式

地球学报 2014年第6期35卷 741-750页

作者：高存荣冯翠娥刘文波赤井纯治久保田喜裕小林巌雄中国地质环境监测院北京100081 新潟大学理学部

为了更好地监测和预测地下水砷污染,揭示由自然原因引起的地下水砷污染规律和机制,通过多年来对内蒙古河套平原地下水砷污染的调查研究,在充分了解和掌握砷的化学与地球化学性质以及世界各国地下水砷污染状况与分布特征的基础上,总结了... 详细信息

为了更好地监测和预测地下水砷污染,揭示由自然原因引起的地下水砷污染规律和机制,通过多年来对内蒙古河套平原地下水砷污染的调查研究,在充分了解和掌握砷的化学与地球化学性质以及世界各国地下水砷污染状况与分布特征的基础上,总结了砷在自然环境中的分布和污染地下水的机理。文章阐述了4种地下水砷污染类型的形成机理,并提出了地壳表层砷的循环与污染地下水模式,通过该模式在基本掌握某一地区地质环境背景的情况下,可以初步预测其可能发生地下水砷污染的地段。地下水砷污染是砷在地壳表层循环过程中发生的一种环境水文地球化学现象,污染区的分布与特定的地质、地理背景和环境条件有关。在还原解吸污染类型中,封闭的环境、硫元素和有机碳的存在是地层中砷溶出的主要控制因素。今后应加强对封闭的冲积或湖积平原、河流入湖或入海三角洲等地区地下水砷污染的调查与监测。

关键词：地壳表层砷污染砷循环污染模式污染类型还原解吸

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硒砂瓜连作对土壤真菌群落结构的影响

中国生态农业学报（中英文） 2019年第4期27卷 537-544页

作者：冯翠娥岳思君简阿妮陈丽萍郭洋郑蕊苏建宇宁夏大学生命科学学院/西部特色生物资源保护与利用教育部重点实验室银川750021

硒砂瓜是宁夏地区重要的经济作物,其连作严重影响硒砂瓜产量和品质。目前硒砂瓜连作对土壤真菌群落结构的影响尚不清楚。本研究采用Illumina MiSeq高通量测序技术,探讨硒砂瓜连作对土壤真菌群落结构的影响。研究发现,硒砂瓜连作土壤中... 详细信息

硒砂瓜是宁夏地区重要的经济作物,其连作严重影响硒砂瓜产量和品质。目前硒砂瓜连作对土壤真菌群落结构的影响尚不清楚。本研究采用Illumina MiSeq高通量测序技术,探讨硒砂瓜连作对土壤真菌群落结构的影响。研究发现,硒砂瓜连作土壤中真菌群落多样性指数和丰富度指数随连作年限的增加先上升后下降。供试土壤样本中共检测到真菌8门、25纲、244属,其中子囊菌门(Ascomycota)、接合菌门(Zygomycota)是优势菌门,占90%以上。与对照相比,连作30年土壤中子囊菌门丰度下降32.51%,接合菌门丰度上升29.89%。供试土壤中真菌主要的优势属为被孢霉属(Mortierella)、绿僵菌属(Metarhiziun)、假霉样真菌属(Pseudallescheria)、镰刀菌属(Fusarium)和青霉属(Penicillium)。与对照相比,连作5年土壤中假霉样真菌属丰度增加45.81%,连作10年土壤中镰刀菌属丰度增加26.74%,连作15年土壤中绿僵菌属下降26.83%,连作20年土壤中青霉属增加29.68%,连作25年土壤中绿僵菌属减少18.30%,连作30年土壤中被孢霉属丰度上升29.89%。土壤理化性质与硒砂瓜连作年限间无显著相关性,而与土壤真菌群落结构存在显著的相关性。土壤全磷、碱解氮、有效磷含量是影响土壤真菌群落最主要的因素。研究结果表明,导致硒砂瓜连作障碍的主要原因不是土壤理化性质变化,而是土壤真菌群落结构的改变。研究结果可为硒砂瓜土传病害的生物防治提供参考依据。

关键词：连作土壤真菌群落结构 Illumina高通量测序土壤理化性质硒砂瓜

木丹颗粒联合贝前列素钠、依帕司他治疗糖尿病周围神经病变的疗效观察

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中国医院用药评价与分析 2015年第1期15卷 44-46页

作者：冯翠娥石振东铁法煤业集团总医院内分泌科辽宁铁岭112700 铁法煤业集团总医院干部病房辽宁铁岭112700

目的:观察木丹颗粒联合贝前列素钠、依帕司他治疗糖尿病周围神经病变的临床疗效及安全性。方法:将152例糖尿病周围神经病变患者,以随机数字表法分为2组各76例。对照组患者口服贝前列素钠40μg、1日3次+依帕司他50 mg、1日3次,治疗组患... 详细信息

目的:观察木丹颗粒联合贝前列素钠、依帕司他治疗糖尿病周围神经病变的临床疗效及安全性。方法:将152例糖尿病周围神经病变患者,以随机数字表法分为2组各76例。对照组患者口服贝前列素钠40μg、1日3次+依帕司他50 mg、1日3次,治疗组患者在对照组的基础上加用木丹颗粒7 g、1日3次、口服。2组均以3周为1个疗程,观察治疗前、后2组患者的临床症状及肌电图改善情况。结果:治疗组、对照组患者总有效率分别为93.4%(71/76)、78.9%(60/76),差异有统计学意义(P<0.05)。治疗后,2组患者正中神经和腓总神经的运动神经传导速度和感觉神经传导速度较治疗前均有明显改善,差异有统计学意义(P<0.05);且治疗组较对照组改善更明显,差异有统计学意义(P<0.01)。2组患者均未见明显的不良反应。结论:木丹颗粒联合贝前列素钠、依帕司他治疗糖尿病周围神经病变的疗效优于贝前列素钠、依帕司他联合治疗,且无明显不良反应。

关键词：糖尿病周围神经病变木丹颗粒联合治疗疗效

Bioinspired Passive Tactile Sensors enabled by Reversible Polarization of Conjugated Polymers

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Nano-Micro Letters 2025年第1期17卷 361-377页

作者： feng He Sitong Chen Ruili Zhou Hanyu Diao Yangyang Han Xiaodong Wu School of Mechanical engineering Sichuan UniversityChengdu 610065People’s Republic of China School of Software engineering Chongqing University of Posts and TelecommunicationsChongqing 400065People’s Republic of China State Key Laboratory of Polymer Materials engineering Sichuan UniversityChengdu 610065People’s Republic of China

Tactile perception plays a vital role for the human body and is also highly desired for smart prosthesis and advanced *** to active sensing devices,passive piezoelectric and triboelectric tactile sensors consume less power,but lack the capability to resolve static ***,we address this issue by utilizing the unique polarization chemistry of conjugated polymers for the first time and propose a new type of bioinspired,passive,and bio-friendly tactile sensors for resolving both static and dynamic ***,to emulate the polarization process of natural sensory cells,conjugated polymers(including poly(3,4-ethylenedioxythiophen e):poly(styrenesulfonate),polyaniline,or polypyrrole)are controllably polarized into two opposite states to create artificial potential *** controllable and reversible polarization process of the conjugated polymers is fully in situ ***,a micro-structured ionic electrolyte is employed to imitate the natural ion channels and to encode external touch stimulations into the variation in potential difference *** with the currently existing tactile sensing devices,the developed tactile sensors feature distinct characteristics including fully organic composition,high sensitivity(up to 773 mV N^(−1)),ultralow power consumption(nW),as well as superior *** demonstrations,both single point tactile perception(surface texture perception and material property perception)and two-dimensional tactile recognitions(shape or profile perception)with high accuracy are successfully realized using self-defined machine learning *** tactile sensing concept innovation based on the polarization chemistry of conjugated polymers opens up a new path to create robotic tactile sensors and prosthetic electronic skins.

关键词： Passive tactile sensors Reversible polarization of conjugated polymers Tactile perception Machine learning algorithm Object recognition

发状念珠藻NfwspA3基因的克隆及其耐旱能力分析

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植物遗传资源学报 2019年第2期20卷 451-458页

作者：范红丽冯翠娥吴佳月周丽郑蕊苏建宇岳思君宁夏大学生命科学学院/西部特色生物资源保护与利用教育部重点实验室银川750021

水分胁迫蛋白(WSP,Water stress protein,)在植物耐干旱过程中起着重要作用。发状念珠藻具有极强的耐旱、耐盐和抗辐射等能力。本研究以发状念珠藻基因组DNA为模板,利用PCR技术克隆到一个发状念珠藻水分胁迫蛋白基因的开放阅读框(ORF)序... 详细信息

水分胁迫蛋白(WSP,Water stress protein,)在植物耐干旱过程中起着重要作用。发状念珠藻具有极强的耐旱、耐盐和抗辐射等能力。本研究以发状念珠藻基因组DNA为模板,利用PCR技术克隆到一个发状念珠藻水分胁迫蛋白基因的开放阅读框(ORF)序列,命名为NfwspA3,其序列全长1017 bp。生物信息学预测表明,该基因可编码338个氨基酸残基,预测等电点为4.85,分子量为37.48 kD,为亲水性稳定蛋白,分布在细胞质中。构建了NfwspA3基因的重组表达菌株peT32aNfwspA3,以聚乙二醇-6000(PeG-6000)对其模拟干旱胁迫,发现重组菌株最高可忍耐60%浓度的PeG-6000,表现出较强的耐旱性,且具有较高的半乳糖苷酶活性。研究结果为探知发状念珠藻WSP蛋白逆境响应机制及其遗传改良提供了理论依据和基因元件。

关键词：发状念珠藻水分胁迫蛋白基因克隆 NfwspA3 PeG-6000

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宁夏贺兰山东麓酿酒酵母分离筛选及菌株鉴定

食品研究与开发 2017年第11期38卷 176-180页

作者：王志恒刘雅琴冯翠娥李仁杰陈启鹏北方民族大学生物科学与工程学院宁夏葡萄与葡萄酒技术创新中心国家民委发酵酿造工程生物技术重点实验室宁夏银川750021

为进一步探究宁夏贺兰山东麓酿酒葡萄酵母菌的多样性,更好开发利用葡萄产区酵母菌资源。从宁夏贺兰山东麓的西夏王陵、红寺堡、玉泉营、青铜峡、张裕十五世酒庄地区的葡萄园土壤、葡萄浆果表皮以及葡萄自然发酵过程中进行酵母菌的分离筛... 详细信息

为进一步探究宁夏贺兰山东麓酿酒葡萄酵母菌的多样性,更好开发利用葡萄产区酵母菌资源。从宁夏贺兰山东麓的西夏王陵、红寺堡、玉泉营、青铜峡、张裕十五世酒庄地区的葡萄园土壤、葡萄浆果表皮以及葡萄自然发酵过程中进行酵母菌的分离筛选,对得到的122株酵母菌株运用WL营养琼脂培养基进行初步分类,同时结合26S r DNA D1/D2区序列分析。共鉴定出克鲁维毕赤酵母(Pichia kluyveri)、美极梅奇酵母(Metschnikowia pulcherrima)、葡萄汁有孢汉逊酵母(Hanseniaspora uvarum)、酿酒酵母(Saccharomyces cerevisiae)、大隐球酵母(Cryptococcus magnus)共5种酵母菌。进而初步确定宁夏贺兰山东麓酿酒葡萄产区酵母菌的主要种类,为地方特色葡萄酒酵母菌的筛选和选育提供理论基础和研究依据。

关键词：酿酒葡萄酵母菌分离筛选分子鉴定

RCV-based error density estimation in the ultrahigh dimensional additive model

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Science China Mathematics 2022年第5期65卷 1003-1028页

作者： feng Zou Hengjian cui School of Mathematical Sciences Capital Normal UniversityBeijing 100048China

In this paper,we mainly study how to estimate the error density in the ultrahigh dimensional sparse additive model,where the number of variables is larger than the sample ***,a smoothing method based on B-splines is applied to the estimation of regression ***,an improved two-stage refitted crossvalidation(RCV)procedure by random splitting technique is used to obtain the residuals of the model,and then the residual-based kernel method is applied to estimate the error density *** suitable sparse conditions,the large sample properties of the estimator,including the weak and strong consistency,as well as normality and the law of the iterated logarithm,are ***,the relationship between the sparsity and the convergence rate of the kernel density estimator is *** methodology is illustrated by simulations and a real data example,which suggests that the proposed method performs well.

关键词： ultrahigh dimensional additive model B-spline kernel density estimation refitted cross-validation method asymptotic property

Variation operators for singular integrals and their commutators on weighted Morrey spaces and Sobolev spaces

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Science China Mathematics 2022年第6期65卷 1267-1292页

作者： feng Liu Peng cui College of Mathematics and Systems Science Shandong University of Science and TechnologyQingdao 266590China

In this paper,we investigate the boundedness and compactness for variation operators of CalderónZygmund singular integrals and their commutators on weighted Morrey spaces and Sobolev *** be precise,letρ>2 and K be a standard Calderón-Zygmund *** by V_(ρ)(T_(K))and V_(ρ)(T_(K,b)^(m))(m≥1)theρ-variation operators of Calderón-Zygmund singular integrals and their m-th iterated commutators,*** assuming that V_(ρ)(T_(K))satisfies an a priori estimate,i.e.,the map V_(ρ)(T_(K)):L^(p0)(R^(n))→L^(p0)(R^(n))is bounded for some p0∈(1,∞),the bounds for V_(ρ)(T_(K))and V_(ρ)(T_(K,b)^(m))on weighted Morrey spaces and Sobolev spaces are ***,the compactness properties of V_(ρ)(T_(K,b)^(m))on weighted Lebesgue and Morrey spaces are also *** applications,the corresponding results for the Hilbert transform,the Hermite Riesz transform,Riesz transforms and rough singular integrals as well as their commutators on the above function spaces are presented.

关键词： variation operator Calderón-Zygmund singular integral commutator weighted Morrey space Sobolev space