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SYNTHETIC BILAYER MEMBRANES FROM A SERIES OF MONOALKYL AZOTIC CROWN ETHERS

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Chinese Chemical Letters 1994年第8期5卷 647-650页

作者： Xiang Ping QIAN Lin WU Chun Sheng ZHU zi hou tai(State Key Laboratory of Coordination Chemise and Department of Chemistry,Nanjing University, Nanjing 210093)

A new series of amphiphiles of amphiphiles of monoalkyl azotic crown ethers has been synthesized. TEM, DSC and UV-Vis spectroscopy of aqueous dispersions of these amphiphiles indicate that they can form self-assembly...

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Epitaxial growth of borophene on graphene surface towards efficient and broadband photodetector

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Nano Research 2024年第4期17卷 3053-3060页

作者： Zenghui Wu Chen Shifan zitong Wu Yi Liu Wei Shao Xinchao Liang Chuang hou Guoan tai The State Key Laboratory of Mechanics and Control of Mechanical Structures and Laboratory of Intelligent Nano Materials and Devices of Ministry of Education College of Aerospace EngineeringNanjing University of Aeronautics and AstronauticsNanjing 210016China

In-situ integration of multiple materials with well-defined interfaces as heterostructures is of great interest due to their unique properties and potential for new device *** of its polymorphism and diverse bonding geometries,borophene is a promising candidate for two-dimensional heterostructures,but suitable synthesis conditions have limited its potential *** this end,we demonstrate the vertical borophene and graphene heterostructures which form by epitaxial growth of borophene onto multilayer graphene on Cu substrates via chemical vapor deposition,where hydrogen and NaBH_(4) are respectively used as the carrier gas and the boron *** lattice structure of the as-synthesized borophene well coincides with the predictedα′-boron *** borophene-based photodetector shows an excellent broadband photoresponse from the ultraviolet(255 nm)to the infrared(940 nm)wavelengths,with enhanced responsivity compared to pristine borophene or graphene *** work informs emerging efforts to integrate borophene into nanoelectronic applications for both fundamental investigations and technological applications.

关键词： borophene graphene heterostructure photodetector two-dimensional materials

Artificial intelligence system for outcome evaluations of human in vitro fertilization-derived embryos

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中华医学杂志(英文版) 2024年第16期137卷 1939-1949页

作者： Sun Ling Li Jiahui Zeng Simiao Luo Qiangxiang Miao Hanpei Liang Yunhao Cheng Linling Sun Zhuo tai Wa hou Han Yibing Yin Yun Wu Keliang Zhang Kang Department of Reproductive Medicine Guangzhou Women and Children’s Medical Center Guangzhou Medical University Guangzhou Guangdong China Guangzhou National Laboratory Guangzhou Guangdong China Department of Reproductive Medicine Jiangmen Central Hospital Jiangmen Guangdong China Department of Ophthalmology Dongguan People’s Hospital The First School of Clinical Medicine Southern Medical University Dongguan Guangdong China Institute for Artificial Intelligence in Medicine Faculty of Medicine Macau University of Science and Technology Macau Special Administrative Region China Wenzhou Eye Hospital Institute for Advanced Studies on Eye Health and Diseases Wenzhou Medical University Wenzhou Zhejiang China Kiang Wu Hospital Macau Special Administrative Region China Faculty of Business City University of Macau Macau Special Administrative Region China State Key Laboratory of Reproductive Medicine and Offspring Health Center for Reproductive Medicine Institute of Women Children and Reproductive Health and Key laboratory of Reproductive Endocrinology of Ministry of Education Shandong University Jinan Shandong China

Background: In vitro fertilization (IVF) has emerged as a transformative solution for infertility. However, achieving favorable live-birth outcomes remains challenging. Current clinical IVF practices in IVF involve the collection of heterogeneous embryo data through diverse methods, including static images and temporal videos. However, traditional embryo selection methods, primarily reliant on visual inspection of morphology, exhibit variability and are contingent on the experience of practitioners. Therefore, an automated system that can evaluate heterogeneous embryo data to predict the final outcomes of live births is highly ***: We employed artificial intelligence (AI) for embryo morphological grading, blastocyst embryo selection, aneuploidy prediction, and final live-birth outcome prediction. We developed and validated the AI models using multitask learning for embryo morphological assessment, including pronucleus type on day 1 and the number of blastomeres, asymmetry, and fragmentation of blastomeres on day 3, using 19,201 embryo photographs from 8271 patients. A neural network was trained on embryo and clinical metadata to identify good-quality embryos for implantation on day 3 or day 5, and predict live-birth outcomes. Additionally, a 3D convolutional neural network was trained on 418 time-lapse videos of preimplantation genetic testing (PGT)-based ploidy outcomes for the prediction of aneuploidy and consequent live-birth ***: These two approaches enabled us to automatically assess the implantation potential. By combining embryo and maternal metrics in an ensemble AI model, we evaluated live-birth outcomes in a prospective cohort that achieved higher accuracy than experienced embryologists (46.1%vs. 30.7% on day 3, 55.0%vs. 40.7% on day 5). Our results demonstrate the potential for AI-based selection of embryos based on characteristics beyond the observational abilities of human clinicians (area under the curve: 0.769, 95% confidenc

关键词： Artificial intelligence Fertilizationin vitro Embryo implantation Blastocyst Aneuploidy Neural networks, computer Live birth

Design and test of the plant-correcting reel for harvesting lodging garlic plants

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International Journal of Agricultural and Biological Engineering 2024年第1期17卷 59-68页

作者： Yuhua Li Chao Li Lupeng Liu Kai Zhou Jialin hou College of Mechanical and Electronic Engineering Shandong Agricultural UniversityTai’an 271018ShandongChina College of Biosystems Engineering&Food Science Zhejiang UniversityHangzhou 310058China

Crops are prone to lodging with the decline of stem moisture and the intervention of other factors in the mature harvest period,such as garlic,which is difficult to harvest *** solve this problem,the plant-correcting reel for harvesting lodging garlic plants,bumped and deformed with plants many times to pull and lift them into a conveyor,is proposed in this *** analyzed the motion trajectory equation and key influencing factors of the reel and defined the lifting and plant-correcting stages as three processes of contact,stirring and *** example,the contact deformation model and system energy equations were established in the contact ***,in the stirring process,the garlic plant-correcting conditions were established through the dynamic simulation test analysis of garlic seedling trajectories and the deflection model of garlic stem was ***,in the release process,the expressions of rubber bars rotation and garlic plant offset bending curvature were constructed and the optimal number and distribution form of bars were ***,the mechanism and key operating parameters of the auxiliary lifting mechanism of the divider were *** the single-factor test,the influence of reel speed,forward speed and reel height on the success feeding rate was analyzed under different bars distribution forms;Through multi-factor experiments,the interaction contour map of various factors was *** reel speed,forward speed and reel height were 3 rad/s,3.5 m/s,and 540 mm,the feeding success rate was 98.73%.The optimization factors were tested and verified,which met the operational requirements of a high feeding success rate and low loss rate of garlic *** study combines laboratory virtual as well as field experiments and analyzes of trajectory of bars,contact deformation and deflection model of garlic plant,and reel rotation and garlic plant offset bending curvature to solve the problem of ga

关键词： feeding success rate lodging garlic harvesting reel plant model field test

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寄存器传输级硬件设计信息流建模与安全验证

西北工业大学学报 2024年第3期42卷 506-513页

作者：秦茂源侯佳滢李家乐唐时博邰瑜西安工业大学计算机科学与工程学院陕西西安710021 西北工业大学网络空间安全学院陕西西安710072

近年来,已有大量研究证明信息流分析能够有效地对设计安全属性与安全行为进行建模。然而,现有的门级抽象层次的信息流分析方法往往受制于算力和验证效力等因素难以应对大规模设计,而RTL抽象层次的信息流分析方法需借助类型系统等形式化... 详细信息

近年来,已有大量研究证明信息流分析能够有效地对设计安全属性与安全行为进行建模。然而,现有的门级抽象层次的信息流分析方法往往受制于算力和验证效力等因素难以应对大规模设计,而RTL抽象层次的信息流分析方法需借助类型系统等形式化语言对硬件设计进行重新描述。因此,提出了一种寄存器传输级硬件设计信息流建模与安全验证方法。该方法在寄存器传输级功能模型的基础上构建附加安全属性的信息流跟踪逻辑模型,从信息流角度建模设计安全行为和安全属性,并利用EDA测试验证工具,以无干扰为策略捕捉违反安全策略的有害信息流,检测硬件设计安全漏洞。以Trust-Hub硬件木马测试集为测试对象的实验结果表明:所提方法能够有效检测设计内潜藏的硬件木马。

关键词：硬件安全信息流安全模型信息流安全验证安全漏洞检测

基于综合序分量的柔性直流交流送出线路单相接地距离保护

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电力系统自动化 2024年第17期48卷 119-129页

作者：张怀宇郑晓冬晁晨栩邰能灵刘中平侯勇电力传输与功率变换控制教育部重点实验室(上海交通大学) 上海市200240 国家电网有限公司华东分部上海市200120

在柔性直流换流器故障电流相位受控特性的影响下,传统距离保护在柔性直流交流送出线路发生单相经过渡电阻接地故障后易出现不正确动作行为。文中分析了柔性直流交流送出线路单相接地故障时的电气量分布规律,利用柔性直流交流送出线路单... 详细信息

在柔性直流换流器故障电流相位受控特性的影响下,传统距离保护在柔性直流交流送出线路发生单相经过渡电阻接地故障后易出现不正确动作行为。文中分析了柔性直流交流送出线路单相接地故障时的电气量分布规律,利用柔性直流交流送出线路单相接地故障期间换流站侧负序电流受抑制的新特征,提出一种基于综合序分量的新型单相接地距离保护。所提保护方案从理论上消除了过渡电阻的影响,可基于单端量准确计算故障位置。此外,该保护也适用于柔性直流并网于弱系统场景。最后,通过仿真验证了所提保护方案的有效性。

关键词：柔性直流输电综合序分量单端量保护距离保护负序电流抑制过渡电阻

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转鼓式固态生物反应器的研究进展

中国调味品 2024年第4期49卷 192-195页

作者：杨闻刘会鹏邰燕翔洪厚胜南京工业大学生物与制药工程学院南京211816 南京工业大学化学与分子工程学院南京211816 南京汇科生物工程设备有限公司南京210009

固态发酵是指微生物在含水量极低的固体物料上进行生长、代谢,以获得初生代谢产物和次生代谢产物。固态反应器因其各种工艺参数的在线监测与自动控制,在食品发酵、生物制药、饲料生产等领域有着越来越广泛的用途。根据罐温、溶氧、pH等... 详细信息

固态发酵是指微生物在含水量极低的固体物料上进行生长、代谢,以获得初生代谢产物和次生代谢产物。固态反应器因其各种工艺参数的在线监测与自动控制,在食品发酵、生物制药、饲料生产等领域有着越来越广泛的用途。根据罐温、溶氧、pH等工艺参数而采用不同的控制模式。在固态发酵过程中,由于微生物生长环境、物料、传质等诸多因素的差异,设计反应器并实现智能化、程序化是有待解决的关键性共同问题。主要对转鼓式生物固态反应器的应用、特征进行分析并对一些目前存在的弊端提出疑问。

关键词：固态发酵代谢产物转鼓式固态反应器在线监测工艺参数智能化

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红曲菌主要代谢产物生产工艺研究进展

中国调味品 2024年第5期49卷 200-204页

作者：邰燕翔杨闻刘会鹏洪厚胜南京工业大学生物与制药工程学院南京211816 南京工业大学化学与分子工程学院南京211816 南京汇科生物工程设备有限公司南京210009

红曲是我国传统的谷物发酵产品,广泛应用于发酵食品、医药、化妆品等行业,其主要次级代谢产物有红曲色素(Monascus pigments,MPs)、莫纳可林K(Monacolin K,MK)、桔霉素(citrinin,CIT)等。为了更好地开发红曲,文章论述了红曲中主要代谢... 详细信息

红曲是我国传统的谷物发酵产品,广泛应用于发酵食品、医药、化妆品等行业,其主要次级代谢产物有红曲色素(Monascus pigments,MPs)、莫纳可林K(Monacolin K,MK)、桔霉素(citrinin,CIT)等。为了更好地开发红曲,文章论述了红曲中主要代谢产物特性、不同发酵工艺对产量的影响以及红曲菌的生产与应用,并展望了未来红曲菌的研究前景。

关键词：功能性红曲红曲色素莫纳可林K 桔霉素工艺优化生产应用

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Borophene gas sensor

Nano Research 2022年第3期15卷 2537-2544页

作者： Chuang hou Guoan tai Yi Liu Xiang Liu The State Key Laboratory of Mechanics and Control of Mechanical Structures and Laboratory of Intelligent Nano Materials and Devices of Ministry of Education College of Aerospace EngineeringNanjing University of Aeronautics and AstronauticsNanjing 210016China

High-performance gas sensing devices have been extensively studied in industrial production,clinical medicine and environmental *** the materials used to fabricate gas sensors,two-dimensional(2D)materials are viewed as favorable candidate sensing materials because of their high surface-to-volume ratios,abundant surface activity,defect ***,gas sensors based on the previously reported 2D materials have some disadvantages such as poor air-stability and slow dynamic ***,borophene,as a unique 2D material,has been theoretically predicted to have excellent gas sensing characteristic,especially for nitrogen dioxide(NO_(2)).However,the gas sensing property of borophene has not been still reported ***,we report that a chemiresistive sensor device based on borophene shows high sensitivity,fast response,high selectivity,good flexibility and long-time *** is found that the sensor has a low experimental detection limit of around 200 ppb,a large detection range from 200 ppb to 100 ppm,and fast response time of 30 s and recovery time of 200 s at room temperature,which are remarkably superior to those of reported 2D *** underlying NO_(2) sensing mechanism of borophene is revealed by first-principles *** line with theoretical predication,it has also been confirmed experimentally that the borophene-based sensor has a unique selectivity to NO_(2) compared with other common ***,the sensor also displays superior flexibility and stability under different bending *** study shows excellent electronic and sensing characteristic of borophene,which indicates that it has great potential application value in high-performance sensing and detection in the future.

关键词： borophene gas sensor charge transfer wearable application density functional theory