Search results for: Ning Xu

Items from 1 to 20 out of 929 results

article

Computer‐Aided Synthesis Planning (CASP) and Machine Learning: Optimizing Chemical Reaction Conditions

Yu Han, Mingjing Deng, Ke Liu, Jia Chen, more

Chemistry – A European Journal > 30 > 55 > n/a - n/a

Computer‐aided synthesis planning (CASP) has garnered increasing attention in light of recent advancements in machine learning models. While the focus is on reverse synthesis or forward outcome prediction, optimizing reaction conditions remains a significant challenge. For datasets with multiple variables, the choice of descriptors and models is pivotal. This selection dictates the effective extraction...

article

Optimized backstepping‐based finite‐time containment control for nonlinear multi‐agent systems with prescribed performance

Li Tang, Liang Zhang, Ning Xu

Optimal Control Applications and Methods > 45 > 5 > 2364 - 2382

In this article, a finite‐time optimal containment control method is proposed for nonlinear multi‐agent systems with prescribed performance. First, a neural network‐based reinforcement learning algorithm is developed under the optimized backstepping framework. The algorithm employs an identifier‐critic‐actor architecture, where the identifiers, critics and actors are used to estimate the unknown dynamics,...

article

Adaptive optimized backstepping tracking control for full‐state constrained nonlinear strict‐feedback systems without using barrier Lyapunov function method

Boyan Zhu, Ning Xu, Guangdeng Zong, Xudong Zhao

Optimal Control Applications and Methods > 45 > 5 > 2051 - 2075

In this article, the problem of adaptive optimal tracking control is studied for nonlinear strict‐feedback systems. While not directly measurable, the states of these systems are subject to both time‐varying and asymmetric constraints. Bypassing the conventional barrier Lyapunov function method, the constrained system is transformed into its unconstrained counterpart, thereby obviating the need for...

article

Interpretable Data‐Driven Descriptors for Establishing the Structure‐Activity Relationship of Metal–Organic Frameworks Toward Oxygen Evolution Reaction

Jian Zhou, Liangliang Xu, Huiyu Gai, Ning Xu, more

Angewandte Chemie International Edition > 63 > 36 > n/a - n/a

The development of readily accessible and interpretable descriptors is pivotal yet challenging in the rational design of metal–organic framework (MOF) catalysts. This study presents a straightforward and physically interpretable activity descriptor for the oxygen evolution reaction (OER), derived from a dataset of bimetallic Ni‐based MOFs. Through an artificial‐intelligence (AI) data‐mining subgroup...

article

Interpretable Data‐Driven Descriptors for Establishing the Structure‐Activity Relationship of Metal–Organic Frameworks Toward Oxygen Evolution Reaction

Jian Zhou, Liangliang Xu, Huiyu Gai, Ning Xu, more

Angewandte Chemie > 136 > 36 > n/a - n/a

article

The response of mesophyll conductance to short‐term CO₂ variation is related to stomatal conductance

Xuming Wang, Wei Ting Ma, Yan Ran Sun, Yi Ning Xu, more

Plant, Cell & Environment > 47 > 9 > 3590 - 3604

The response of mesophyll conductance (g_m) to CO₂ plays a key role in photosynthesis and ecosystem carbon cycles under climate change. Despite numerous studies, there is still debate about how g_m responds to short‐term CO₂ variations. Here we used multiple methods and looked at the relationship between stomatal conductance to CO₂ (g_sc) and g_m to address this aspect. We measured chlorophyll fluorescence...

article

Diagnosis and management of urinary bladder paragangliomas: A Sino‐American‐European retrospective observational study

Yingxian Pang, Jing Zhang, Jingjing Jiang, Christina Pamporaki, more

Clinical Endocrinology > 101 > 3 > 234 - 242

Objective Paragangliomas of the urinary bladder (UBPGLs) are rare neuroendocrine tumours and pose a diagnostic and surgical challenge. It remains unclear what factors contribute to a timely presurgical diagnosis. The purpose of this study is to identify factors contributing to missing the diagnosis of UBPGLs before surgery. Design, Patients and Measurements A total of 73 patients from 11 centres...

article

Organizational unlearning: A process of tension imposition, integration, and splitting

Ning Xu, Xiaobo Wu, Jian Du, Sihan Li

European Management Review > 21 > 2 > 443 - 458

Organizational unlearning plays a vital role in facilitating new product development (NPD); however, the microprocesses of unlearning (i.e., how to unlearn) remain unclear. We aim to open this black box by investigating how two important dimensions—beliefs and routines—change during the unlearning process, using a longitudinal case study approach. Through a case study of Geely Auto, we identified...

article

Coronatine orchestrates ABI1‐mediated stomatal opening to facilitate bacterial pathogen infection through importin β protein SAD2

Lu Liu, Yanzhi Liu, Xuehan Ji, Xia Zhao, more

The Plant Journal > 119 > 2 > 676 - 688

Stomatal immunity plays an important role during bacterial pathogen invasion. Abscisic acid (ABA) induces plants to close their stomata and halt pathogen invasion, but many bacterial pathogens secrete phytotoxin coronatine (COR) to antagonize ABA signaling and reopen the stomata to promote infection at early stage of invasion. However, the underlining mechanism is not clear. SAD2 is an importin β...

article

Structural Antagonism‐Aided Conformational Regulation Enables an Aptamer‐Loop G‐Quadruplex Modular Sensor of β‐Lactoglobulin

Xinxin Wang, Ning Xu, Longjiao Zhu, He Yang, more

Small > 20 > 25 > n/a - n/a

A simple, reliable method for identifying β‐lactoglobulin (β‐LG) in dairy products is needed to protect those with β‐LG allergies. A common, practical strategy for target detection is designing simplified nucleic acid nanodevices by integrating functional components. This work presents a label‐free modular β‐LG aptasensor consisting of an aptamer‐loop G‐quadruplex (G4), the working conformation of...

article

Association Between Vestibular Aqueduct Morphology and Meniere's Disease

Yan Huang, Ruowei Tang, Ning Xu, Heyu Ding, more

The Laryngoscope > 134 > 7 > 3349 - 3354

Objective To investigate the relationship between vestibular aqueduct (VA) morphology and Meniere's disease (MD) using ultrahigh‐resolution computed tomography (U‐HRCT). Methods Retrospective data were collected from 34 patients (40 ears) diagnosed with MD in our hospital who underwent temporal bone U‐HRCT with isotropic 0.05‐mm resolution, magnetic resonance with gadolinium‐enhanced, and pure‐tone...

article

Ultrasound‐enhanced covalent reaction of gliadin: the inhibition of antigenicity and its potential mechanisms

Junrong Wang, Jiaxing Cao, Ning Xu, Taihe Meng, more

Journal of the Science of Food and Agriculture > 104 > 10 > 6127 - 6138

BACKGROUND Wheat proteins can be divided into water/salt‐soluble protein (albumin/globulin) and water/salt‐insoluble protein (gliadins and glutenins (Glu)) according to solubility. Gliadins (Glia) are one of the major allergens in wheat. The inhibition of Glia antigenicity by conventional processing techniques was not satisfactory. RESULTS In this study, free radical oxidation was used to induce...

article

Electro‐induced Crystallization Over Amorphous Indium Hydroxide Gels Toward Ampere‐Level Current Density Formate Electrosynthesis

Jia Yue Zhao, Kai Huang, Changwei Liu, Xuefeng Wu, more

Advanced Functional Materials > 34 > 24 > n/a - n/a

Electrochemical CO₂ reduction reaction (CO₂RR) provides a promising way for producing value‐added fuels and chemicals via renewable electricity. However, the dynamic reconstruction of electrocatalysts of atomic active sites hinders in‐depth understanding of catalytic mechanism and further industrial application, especially under ampere‐level current density conditions. In this work, electro‐induced...

article

In situ/Operando Synchrotron Radiation Analytical Techniques for CO₂/CO Reduction Reaction: From Atomic Scales to Mesoscales

Yi Ning Xu, Bingbao Mei, Qiucheng Xu, Huai Qin Fu, more

Angewandte Chemie International Edition > 63 > 25 > n/a - n/a

Electrocatalytic carbon dioxide/carbon monoxide reduction reaction (CO₍₂₎RR) has emerged as a prospective and appealing strategy to realize carbon neutrality for manufacturing sustainable chemical products. Developing highly active electrocatalysts and stable devices has been demonstrated as effective approach to enhance the conversion efficiency of CO₍₂₎RR. In order to rationally design electrocatalysts...

article

In situ/Operando Synchrotron Radiation Analytical Techniques for CO₂/CO Reduction Reaction: From Atomic Scales to Mesoscales

Yi Ning Xu, Bingbao Mei, Qiucheng Xu, Huai Qin Fu, more

Angewandte Chemie > 136 > 25 > n/a - n/a

article

Two‐Orders‐of‐Magnitude Enhancement of Photoinitiation Activity via a Simple Surface Engineering of Metal Nanoclusters

Jin Tang, Ning Xu, An Ren, Liang Ma, more

Angewandte Chemie International Edition > 63 > 23 > n/a - n/a

Development of high‐performance photoinitiator is the key to enhance the printing speed, structure resolution and product quality in 3D laser printing. Here, to improve the printing efficiency of 3D laser nanoprinting, we investigate the underlying photochemistry of gold and silver nanocluster initiators under multiphoton laser excitation. Experimental results and DFT calculations reveal the high...

article

Two‐Orders‐of‐Magnitude Enhancement of Photoinitiation Activity via a Simple Surface Engineering of Metal Nanoclusters

Jin Tang, Ning Xu, An Ren, Liang Ma, more

Angewandte Chemie > 136 > 23 > n/a - n/a

article

Managerial long‐termism and corporate innovation: Evidence from China through text mining approaches

Ning Xu, Di Zhang, Yingjie Bai

Business Strategy and the Environment > 33 > 3 > 2269 - 2286

Adhering to long‐termism is essential for sustaining and promoting corporate innovation in the face of future uncertainty. In this study, we use machine learning and text analysis methods to construct a proxy variable for managerial long‐termism and explore how managerial long‐termism affects corporate innovation using a sample of 13,117 firm‐year observations from 2010 to 2020 in China. We find managerial...

article

Pinellia discolor: a new cryptic species distinguished from P. cordata in mainland China

Mei‐Qian Chen, Ning Xu, Jian‐Min Man, Rui Luo

Nordic Journal of Botany > 2024 > 3 > n/a - n/a

Pinellia cordata (Araceae) is a perennial herb species distributed in China and Japan. Several studies have shown that there are two types of this species, and chromosome counts have shown irregular variation among populations. In this study, we investigated the morphological characteristics, established the chromosome number in root tips, reconstructed phylogenetic relationship based on whole chloroplast...

article

Event‐triggered distributed consensus control of nonlinear multi‐agent systems with unknown Bouc–Wen hysteresis input and DoS attacks

Shiyu Guo, Ning Xu, Ben Niu, Xudong Zhao, more

International Journal of Adaptive Control and Signal Processing > 38 > 3 > 877 - 906

In this paper, the event‐triggered distributed consensus tracking control problem for a class of multi‐agent systems (MASs) is studied, where denial‐of‐service (DoS) attacks and Bouc‐Wen hysteresis inputs are considered in the communication channel and the actuator, respectively. First, when communication networks are subject to malicious DoS attacks, the connection weights of the communication topology...

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INFONA - science communication portal

Search results for: Ning Xu

Computer‐Aided Synthesis Planning (CASP) and Machine Learning: Optimizing Chemical Reaction Conditions

Optimized backstepping‐based finite‐time containment control for nonlinear multi‐agent systems with prescribed performance

Adaptive optimized backstepping tracking control for full‐state constrained nonlinear strict‐feedback systems without using barrier Lyapunov function method

Interpretable Data‐Driven Descriptors for Establishing the Structure‐Activity Relationship of Metal–Organic Frameworks Toward Oxygen Evolution Reaction

Interpretable Data‐Driven Descriptors for Establishing the Structure‐Activity Relationship of Metal–Organic Frameworks Toward Oxygen Evolution Reaction

The response of mesophyll conductance to short‐term CO₂ variation is related to stomatal conductance

Diagnosis and management of urinary bladder paragangliomas: A Sino‐American‐European retrospective observational study

Organizational unlearning: A process of tension imposition, integration, and splitting

Coronatine orchestrates ABI1‐mediated stomatal opening to facilitate bacterial pathogen infection through importin β protein SAD2

Structural Antagonism‐Aided Conformational Regulation Enables an Aptamer‐Loop G‐Quadruplex Modular Sensor of β‐Lactoglobulin

Association Between Vestibular Aqueduct Morphology and Meniere's Disease

Ultrasound‐enhanced covalent reaction of gliadin: the inhibition of antigenicity and its potential mechanisms

Electro‐induced Crystallization Over Amorphous Indium Hydroxide Gels Toward Ampere‐Level Current Density Formate Electrosynthesis

In situ/Operando Synchrotron Radiation Analytical Techniques for CO₂/CO Reduction Reaction: From Atomic Scales to Mesoscales

In situ/Operando Synchrotron Radiation Analytical Techniques for CO₂/CO Reduction Reaction: From Atomic Scales to Mesoscales

Two‐Orders‐of‐Magnitude Enhancement of Photoinitiation Activity via a Simple Surface Engineering of Metal Nanoclusters

Two‐Orders‐of‐Magnitude Enhancement of Photoinitiation Activity via a Simple Surface Engineering of Metal Nanoclusters

Managerial long‐termism and corporate innovation: Evidence from China through text mining approaches

Pinellia discolor: a new cryptic species distinguished from P. cordata in mainland China

Event‐triggered distributed consensus control of nonlinear multi‐agent systems with unknown Bouc–Wen hysteresis input and DoS attacks

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