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INFRARED SPECTRA OF BARIUM CARBONYLS IN NEON MATRICES

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INFRARED SPECTRA OF BARIUM CARBONYLS IN NEON MATRICES

A pH-responsive ZIF-8-encapsulation Au nanocluster fluorescent probe applying for convenient and efficient detection of glucose

第十五届全国化学动力学会议

作者：吴萱 mingfei Zhou Department of Chemistry Fudan University

＜正＞The reaction of Ba+CO has been studied for decades,however,only the product Ba CO has been detected by broad banded chemiluminescence owing to its difficultyof charge ***,we observed the infrared spectra of novel Barium Carbonyls in the solid Nematrices at 3.0 *** products Ba（CO）n（n=1,2,3,4）and Ba 2（CO）n（n=1,2）were identified by isotopic substitution（13 CO and C 16 O）and by correlation with B3LYP calculations.

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来源： cnki会议评论

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Food Science and Human Wellness 2024年

作者： mingfei Pan Yixin Wang Hao Wang Xuan Liu Xiaochun Hu Dan Zhang Shuo Wang State Key Laboratory of Food Nutrition and Safety， Tianjin University of Science and Technology， Tianjin 300457， China Key Laboratory of Food Quality and Health of Tianjin， Tianjin University of Science and Technology

Glucose plays a crucial role as in maintaining human health as an indispensable source of energy in living organisms. Accurate monitoring of glucose levels in living organisms and detecting it in food is essential. In this study， gold nanoclusters (AuNCs) with unique aggregation-induced emission (AIE) effects were encapsulated within zeolite imidazole framework (ZIF-8) to fabricate a pH-responsive AuNCs@ZIF-8 fluorescent nanocomposite. The fluorescence intensity had significant sevenfold enhancement compared to AuNCs alone due to the structural domain-limiting effects exerted by ZIF-8， which effectively inhibited the rotations and vibrations of the AuNCs ligands. Based on the increased acidity generated by glucose catalytic oxidation via glucose oxidase (GOx)， the subsequent degradation of ZIF-8 structure and the consequent reduction of AuNCs with AIE effects were achieved， and a rapid and efficient fluorescence quantification for glucose was performed. The constructed AuNCs@ZIF-8-based fluorescent probe demonstrated a favorable linear response to glucose， achieving a detection limit of 0.096 mmol/L and providing a rapid and efficient approach suitable for assessing glucose levels in both blood and beverage samples.

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C,N,and P Ecological Stoichiometric Characteristics of Two Dominant Mosses in Baotianman Nature Reserve

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Asian Agricultural Research 2017年第8期9卷 40-44页

作者： mingfei JI Shoufang WU Xiaowei ZHANG School of Life Science and Technology Nanyang Normal University School of Life Sciences Lanzhou University/Key Laboratory of Grassland Agro-ecosystems of the Ministry of Agriculture

In order to investigate ecological adaptation mechanism of bryophyte,two dominant mosses Thuidium cymbifolium and Mnium immarginatum in Baotianman Nature Reserve were measured the content of C,N,P and their ratio in bryophyte and soil,and analyzed the relationships of plant and soil ecological stoichiometric characteristics along altitudinal *** indicate that the content of C,N and P in green tissues of *** and *** in Baotianman Nature Reserve was 46.81%-49.09%,0.21%-0.25%,and0.02%-0.08%.Among the different altitudinal gradients,C,N and P displayed significant differences: the significantly different content of C and N were showed in ***,and the content of N and P differed significantly in ***,only N declined obviously as increasing *** soil,the C,N,N/P and C/P showed an increasing trend with increasing elevation,while the P and C/N along altitudinal gradients exhibited no unified *** the increasing in the content C,N of soil,the content C and N of *** raised,while the content C and N of *** *** the rise in P element of soil,N/P showed different trends between two bryophyte species,the N/P in *** significantly decreased,while N/P in *** significantly *** addition,mean value of leaf N/P was 8.51,ranking *** results suggested that the growth of the bryophyte plants in Baotianman Nature Reserve were restricted by N element,and different utilization strategies in soil P element in different bryophyte plants led to differences in ecological stoichiometric characteristics.

关键词： Bryophyte Soil nutrients Stoichiometric Baotianman Nature Reserve Altitudinal gradient

Predicting densities and elastic moduli of SiO_(2)-based glasses by machine learning

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npj Computational Materials 2020年第1期6卷 1455-1467页

作者： Yong-Jie Hu Ge Zhao mingfei Zhang Bin Bin Tyler Del Rose Qian Zhao Qun Zu Yang Chen Xuekun Sun Maarten de Jong Liang Qi Department of Materials Science and Engineering University of MichiganAnn ArborMI 48109USA Department of Statistics Pennsylvania State UniversityState CollegePA 16802USA Fariborz Maseeh Department of Mathematics and Statistics Portland State UniversityPortlandOR 97207USA Sinoma Science&Technology Co. Ltd.210012 NanjingJiangsuChina Continental Technology LLC IndianapolisIN 46033USA Department of Materials Science and Engineering University of CaliforniaBerkeleyCA 94720USA Space Exploration Technologies(SpaceX) HawthorneCA 90250USA

Chemical design of SiO_(2)-based glasses with high elastic moduli and low weight is of great ***,it is difficult to find a universal expression to predict the elastic moduli according to the glass composition before synthesis since the elastic moduli are a complex function of interatomic bonds and their ordering at different length *** we show that the densities and elastic moduli of SiO_(2)-based glasses can be efficiently predicted by machine learning(ML)techniques across a complex compositional space with multiple(>10)types of additive oxides besides SiO_(2).Our machine learning approach relies on a training set generated by high-throughput molecular dynamic(MD)simulations,a set of elaborately constructed descriptors that bridges the empirical statistical modeling with the fundamental physics of interatomic bonding,and a statistical learning/predicting model developed by implementing least absolute shrinkage and selection operator with a gradient boost machine(GBM-LASSO).

关键词： glasses moduli bridges

Metal vacancy-enriched layered double hydroxide for biomass molecule electrooxidation coupled with hydrogen production

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Fundamental Research 2024年第1期4卷 69-76页

作者： Yingjie Song Shan Jiang Yeheng He Yu Wu Xin Wan Wenfu Xie Jingjing Wang Zhenhua Li Haohong Duan mingfei Shao State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBeijing 100029China PetroChina Petrochemical Research Institute China National Petroleum CorporationBeijing 100195China Department of Chemistry Tsinghua UniversityBeijing 100084China

The electrochemical oxidation of biomass molecules coupling with hydrogen production is a promising strategy to obtain both green energy and value-added chemicals;however,this strategy is limited by the competing oxygen evolution reactions and high energy ***,we report a hierarchical CoNi layered double hydroxides(LDHs)electrocatalyst with abundant Ni vacancies for the efficient anodic oxidation of 5-hydroxymethylfurfural(HMF)and cathodic hydrogen *** unique hierarchical nanosheet structure and Ni vacancies provide outstanding activity and selectivity toward several biomass molecules because of the finely regulated electronic structure and highly-exposed active *** particular,a high faradaic efficiency(FE)at a high current density(99%at 100 mA cm^(-2))is achieved for HMF oxidation,and a two-electrode electrolyzer is assembled based on the Ni vacancies-enriched LDH,which realized a continuous synthesis of highly-pure 2,5-furandicarboxylic acid products with high yields(95%)and FE(90%).

关键词： Layered double hydroxides Biomass upgrading 5-hydroxymethylfurfural Hydrogen production Coupled oxidation

Application of Ultrahigh Doses of Morphine in Systemic Multiple Epithelioid Hemangioendothelioma without Addiction: A Case Report

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Case Reports in Clinical Medicine 2019年第11期8卷 285-294页

作者： Minqiang Liu mingfei Ma Xinzhong Ning Renliang He Department of Anesthesiology The Third People’s Hospital of Shenzhen Shenzhen China Department of Thoracic Surgery The Third People’s Hospital of Shenzhen Shenzhen China

Morphine is a potent opioid which is commonly used for relieving cancer pain with strong analgesic properties. Epithelioid hemangioendothelioma (EHE), a rare vascular tumor that can cause severe chronic pain, is usually diagnosed in a surgical biopsy. We describe ultrahigh doses of morphine used in a case of a 17-year-old male who suffered from severe chest pain with systemic multiple EHE. The total dosage of morphine was as high as 92,530 mg given within 164 days. However, we observed no indications that the patient was addicted.

关键词： Epithelioid Hemangioendothelioma Morphine Pain Addiction

Research on TDM approach of sharing BRT-lane supported by vehicle-infrastructure integration

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Engineering Sciences 2013年第5期11卷 77-83页

作者： Dong Hongzhao Ling Yue Liu Dongxu Guo mingfei ITS United Institute Zhejiang University of Technology Key Laboratory of E&M Ministry of Education & Zhejiang Province Zhejiang University of Technology

In order to increase the availability of the part-time idle bus rapid transit lane(BRT-lane),a time division multiplexing(TDM) method to share BRT-lane with the vehicles besides BRT buses is proposed based on vehicle-road collaboration. The TDM control strategy is established under the circumstance of vehicle-infrastructure integration(VII). The algorithm is given to forecast the segmented BRT travel time. According to the real time traffic information,a comprehensive model is given to estimate the vehicles' lane-changing time from/to the BRTlane to/from its neighbor lane and determine the timing sequence for vehicles collaboration. Finally,the experiment demonstrates that the predicted value of the travel time and lane-changing time is much close to the true value. The control strategy of the vehicles collaboration could promise the non-BRT vehicles to share BRT-lane without disturbing BRT's priority.

关键词： vehicle-infrastructure integration(VII) vehicles collaboration BRT-lane time division multiplexing (TDM) lane-changing time model

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罗蒙诺索夫:俄国化学建制化的先驱

自然辩证法通讯 2024年第10期46卷 119-126页

作者：刘茗菲南开大学历史学院天津300350

罗蒙诺索夫是18世纪百科全书式的科学家,在俄罗斯(苏联)享有极高声誉。他抓住时代机遇,1736年进入彼得堡科学院附属大学学习,后被派往德国留学,系统学习化学、物理学和矿物学等自然科学知识。1745年他成为彼得堡科学院第一位本土院士。... 详细信息

罗蒙诺索夫是18世纪百科全书式的科学家,在俄罗斯(苏联)享有极高声誉。他抓住时代机遇,1736年进入彼得堡科学院附属大学学习,后被派往德国留学,系统学习化学、物理学和矿物学等自然科学知识。1745年他成为彼得堡科学院第一位本土院士。在他的努力下,俄国首个科研性质的化学实验室于1748年建成。他在实验室内从事物理化学研究和工业产品开发,发现质量守恒现象,并进行人才培养。此实验室是俄国第一个综合科研、教学和生产功能的化学机构,带动了俄国化学的建制化。

关键词：罗蒙诺索夫彼得堡科学院化学实验室

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基于β-γ符合法测量的在线啜吸检测装置的研制

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核动力工程 2023年第3期44卷 180-184页

作者：曾勇谷明非中国核动力研究设计院成都610213 成都中核海川核技术有限公司成都610041 中国核动力研究设计院核反应堆系统设计技术重点实验室成都610213

反应堆运行期间燃料包壳时常会发生破损,当燃料组件发生破损后,核电厂通常会在换料过程中使用在线啜吸装置对每个燃料组件进行啜吸试验,通过裂变产物分析确定被测组件是否发生破损,然而受核岛内过强的辐射环境干扰影响,传统单一β或单... 详细信息

反应堆运行期间燃料包壳时常会发生破损,当燃料组件发生破损后,核电厂通常会在换料过程中使用在线啜吸装置对每个燃料组件进行啜吸试验,通过裂变产物分析确定被测组件是否发生破损,然而受核岛内过强的辐射环境干扰影响,传统单一β或单γ粒子检测设备的检测结果时有误判或漏判发生。本文设计了一种基于β-γ符合法测量技术的在线啜吸检测装置,装置含有β和γ粒子探测器,并构建了β-γ符合检测通道,融合了现有β、γ破损判断技术,同时增加了基于β-γ符合判断的结果。相关应用结果表明:在核岛内较强辐射干扰下,本系统符合测量本底计数率可达到0.04 s-1,装置对133Xe最小可探测活度(MDA)达23.7 Bq,检测灵敏度优于单一β粒子或γ粒子检测模式;3种判断模式的应用大幅提升了破损判断结果的可靠性。该装置可以替代现有单一粒子检测模式的在线啜吸检测装置应用于核电厂开展相关检测工作。

关键词：组件破损符合法在线啜吸检测最小可探测活度(MDA)

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