Search results for: Yanhui Guo

Items from 1 to 20 out of 95 results

article

Torsional Control of Frustrated Lewis Pair Behaviour Involving PNP‐type Phosphines

Yanhui Guo, Ili Zulkifly, Jennifer Soderman, Andrey V. Protchenko, more

Zeitschrift für anorganische und allgemeine Chemie > 649 > 11-12 > n/a - n/a

We present convenient syntheses of a range of PNP‐type phosphines which feature a pair of ortho‐functionalized ArPPh₂ moieties linked via a central NMe unit, but which differ in the nature of the additional backbone ‘tether’ linking the aryl groups. These comprise the acyclic system bis(2‐diphenylphosphinophenyl)methylamine, together with related systems centred around 5‐, 6‐ and 7‐membered heterocycles...

article

Fabrication of Ultra‐Durable and Flexible NiP_x‐Based Electrode toward High‐Efficient Alkaline Seawater Splitting at Industrial Grade Current Density

Chengyu Fu, Weiju Hao, Jinli Fan, Qiang Zhang, more

Small > 19 > 11 > n/a - n/a

Designing nonprecious metal‐based electrocatalysts to yield sustainable hydrogen energy by large‐scale seawater electrolysis is challenging to global emissions of carbon neutrality and carbon peaking. Herein, a series of highly efficient, economical, and robust Ni–P‐based nanoballs grown on the flexible and anti‐corrosive hydrophobic asbestos (NiP_x@HA) is synthesized by electroless plating at 25 °C...

article

Alloying Co Species into Ordered and Interconnected Macroporous Carbon Polyhedra for Efficient Oxygen Reduction Reaction in Rechargeable Zinc–Air Batteries

Wei Li, Bo Liu, Da Liu, Peifang Guo, more

Advanced Materials > 34 > 17 > n/a - n/a

Engineering non‐precious transition metal (TM)‐based electrocatalysts to simultaneously achieve an optimal intrinsic activity, high density of active sites, and rapid mass transfer ability for the oxygen reduction reaction (ORR) remains a significant challenge. To address this challenge, a hybrid composite consisting of Fe_xCo alloy nanoparticles uniformly implanted into hierarchically ordered macro‐/meso‐/microporous...

article

Monolithic Ni‐Mo‐B Bifunctional Electrode for Large Current Water Splitting

Huixiang Liu, Xuanyang Li, Lulu Chen, Xiaodong Zhu, more

Advanced Functional Materials > 32 > 4 > n/a - n/a

Screening and developing highly efficient electrodes is key to large‐scale water electrolysis. The practical industrial electrode should fulfill several criteria of high activity, structural stability, and fast bubble evolution at a large current density. In this study, a novel monolithic 3D hollow foam electrode that can achieve the requirements of large current density water electrolysis is developed...

article

Ignition and Combustion Behaviors of High Energetic Polyhedral Boron Cluster

Shengji Li, Xinxin Pan, Yukun Jiang, Shuhang Chang, more

Propellants, Explosives, Pyrotechnics > 44 > 10 > 1319 - 1326

Compounds containing [B₁₀H₁₀]²⁻ cluster are promising candidates that can be used as high energetic fuels and burning rate modifiers for propellants. The ignition and combustion behaviors of [N(C₂H₅)₄]₂B₁₀H₁₀ were investigated using a laser ignition system in air. Results show that [N(C₂H₅)₄]₂B₁₀H₁₀ (∼2.0 mm) is ignited with a delay of around 350 ms and threshold ignition energy of 0.7 J at laser...

article

Magnitude of the mixture hormetic response of soil alkaline phosphatase can be predicted based on single conditions of Cd and Pb

Yongli Zhu, Chenglei Liu, Yang You, Jian Liu, more

Ecotoxicology > 2019 > 28 > 7 > 790-800

In soil ecosystems, it is very challenging to predict mixture hormesis effects. In the present study, soil alkaline phosphatase (ALP) was selected to investigate and predict its potential hormetic responses under Cd and Pb stresses. Typical reverse U-shaped dose–response relationships between ALP activities and the single and combined Cd and Pb were observed, showing a hormetic response of soil itself...

article

Time-Dependent Hormetic Response of Soil Alkaline Phosphatase Induced by Cd and the Association with Bacterial Community Composition

Jiangang Han, Shengyan Wang, Diwu Fan, Yanhui Guo, more

Microbial Ecology > 2019 > 78 > 4 > 961-973

Hormetic dose-response that involved Cd in soils is increasingly paid attentions for risk assessment of Cd toxicity, but insufficient studies were conducted to define the temporary modification of soil enzyme and the potential microbial responses. The present study chooses soil alkaline phosphatase (ALP) as endpoint to uncover the time-dependent hormetic responses to low doses of Cd and its association...

article

Hyperspectral image classification with SVM and guided filter

Yanhui Guo, Xijie Yin, Xuechen Zhao, Dongxin Yang, more

EURASIP Journal on Wireless Communications and Networking > 2019 > 2019 > 1 > 1-9

Hyperspectral image (HSI) classification has been long envisioned in the remote sensing community. Many methods have been proposed for HSI classification. Among them, the method of fusing spatial features has been widely used and achieved good performance. Aiming at the problem of spatial feature extraction in spectral-spatial HSI classification, we proposed a guided filter-based method. We attempted...

article

Facile Synthesis of Unsolvated Alkali Metal Octahydrotriborate Salts MB₃H₈ (M=K, Rb, and Cs), Mechanisms of Formation, and the Crystal Structure of KB₃H₈

Xi‐Meng Chen, Nana Ma, Xin‐Ran Liu, Changgeng Wei, more

Angewandte Chemie International Edition > 58 > 9 > 2720 - 2724

A facile synthesis of heavy alkali metal octahydrotriborates (MB₃H₈; M=K, Rb, and Cs) has been developed. It is simply based on reactions of the pure alkali metals with THF⋅BH₃, does not require the use of electron carriers or the addition of other reaction media such as mercury, silica gel, or inert salts as for previous procedures, and delivers the desired products at room temperature in very high...

article

Facile Synthesis of Unsolvated Alkali Metal Octahydrotriborate Salts MB₃H₈ (M=K, Rb, and Cs), Mechanisms of Formation, and the Crystal Structure of KB₃H₈

Xi‐Meng Chen, Nana Ma, Xin‐Ran Liu, Changgeng Wei, more

Angewandte Chemie > 131 > 9 > 2746 - 2750

article

An optimized Mamdani FPD controller design of cardiac pacemaker

Mohamed I. Elnaggar, Amira S. Ashour, Yanhui Guo, Heba A. El-Khobby, more

Health Information Science and Systems > 2019 > 7 > 1 > 1-18

Cardiac pacemaker is a standard implantable medical electronic device for management and treatment of the heart rhythm disorders aiming to improved healthcare. Developing a new pacemaker based heart stimulation techniques has a vital role in preserving the patient’s life. This target inspired the present work to design a new Mamdani fuzzy proportional–derivative (FPD) controller of a cardiac pacemaker,...

article

Centroid tracking and velocity measurement of white blood cell in video

Mohamed Maher Ata, Amira S. Ashour, Yanhui Guo, Mustafa M. Abd Elnaby

Health Information Science and Systems > 2018 > 6 > 1 > 1-11

Automated blood cells tracking system has a vital role as the tracking process reflects the blood cell characteristics and indicates several diseases. Blood cells tracking is challenging due to the non-rigid shapes of the blood cells, and the variability in their videos along with the existence of different moving objects in the blood. To tackle such challenges, we proposed a green star based centroid...

article

Ensemble of subspace discriminant classifiers for schistosomal liver fibrosis staging in mice microscopic images

Amira S. Ashour, Yanhui Guo, Ahmed Refaat Hawas, Guan Xu

Health Information Science and Systems > 2018 > 6 > 1 > 1-10

Schistosomiasis is one of the dangerous parasitic diseases that affect the liver tissues leading to liver fibrosis. Such disease has several levels, which indicate the degree of fibrosis severity. To assess the fibrosis level for diagnosis and treatment, the microscopic images of the liver tissues were examined at their different stages. In the present work, an automated staging method is proposed...

article

Transfer learning based histopathologic image classification for breast cancer detection

Erkan Deniz, Abdulkadir Şengür, Zehra Kadiroğlu, Yanhui Guo, more

Health Information Science and Systems > 2018 > 6 > 1 > 1-7

Breast cancer is one of the leading cancer type among women in worldwide. Many breast cancer patients die every year due to the late diagnosis and treatment. Thus, in recent years, early breast cancer detection systems based on patient’s imagery are in demand. Deep learning attracts many researchers recently and many computer vision applications have come out in various environments. Convolutional...

article

Highly efficient ferromagnetic CoBO catalyst for hydrogen generation

Lincai Wang, Mingshen Zhong, Jiaxuan Li, Xiangshen Zhao, more

International Journal of Hydrogen Energy > 2018 > 43 > 36 > 17164- 17171

Low cost and effective transition metal based catalysts are critical to the development of hydrogen generation techniques. In this paper, a multifunctional nanosized CoBO material has been developed that can act as highly active catalyst for both hydrolytic and electrolytic hydrogen production, affording a hydrogen generation rate of 7.45 L min⁻¹ g⁻¹ for hydrolysis of sodium borohydride (NaBH₄), and...

article

Comparative study of multiclass classification methods on light microscopic images for hepatic schistosomiasis fibrosis diagnosis

Amira S. Ashour, Ahmed Refaat Hawas, Yanhui Guo

Health Information Science and Systems > 2018 > 6 > 1 > 1-12

Hepatic schistosomiasis is a prolonged disease resulting mainly from the solvable egg antigen of schistosomiasis infection due to the host’s granulomatous cell-mediated immune. Irreversible fibrosis results from the progress of the schistosomal hepatopathy. Sensitive diagnosis of this disease is based on the investigation of the microscopy images, liver tissues, and egg identification. Early diagnosis...

article

A hybrid dermoscopy images segmentation approach based on neutrosophic clustering and histogram estimation

Amira S. Ashour, Yanhui Guo, Enver Kucukkulahli, Pakize Erdogmus, more

Applied Soft Computing > 2018 > 69 > C > 426-434

In this work, a novel skin lesion detection approach, called HBCENCM, is proposed using histogram-based clustering estimation (HBCE) algorithm to determine the required number of clusters in the neutrosophic c-means clustering (NCM) method. Initially, the dermoscopic images are mapped into the neutrosophic domain over three memberships, namely true, indeterminate, and false subsets. Then, an NCM algorithm...

article

Ultrafine Co Nanoparticles Encapsulated in Carbon‐Nanotubes‐Grafted Graphene Sheets as Advanced Electrocatalysts for the Hydrogen Evolution Reaction

Ziliang Chen, Renbing Wu, Yang Liu, Yuan Ha, more

Advanced Materials > 30 > 30 > n/a - n/a

The rational design of an efficient and inexpensive electrocatalyst based on earth‐abundant 3d transition metals (TMs) for the hydrogen evolution reaction still remains a significant challenge in the renewable energy area. Herein, a novel and effective approach is developed for synthesizing ultrafine Co nanoparticles encapsulated in nitrogen‐doped carbon nanotubes (N‐CNTs) grafted onto both sides...

article

Cryptanalysis and improvement of 2 mutual authentication schemes for Session Initiation Protocol

Shuming Qiu, Guoai Xu, Yanhui Guo, Miao Zhang

International Journal of Communication Systems > 31 > 10 > n/a - n/a

Recently, Chaudhry et al and Kumari et al proposed an advanced mutual authentication protocol for Session Initiation Protocol on the basis of the protocol of Lu et al. The authors claimed that their schemes can be resistant to various attacks. Unfortunately, we observe some important flaws in their respective schemes. We point out that their schemes are prone to off‐line password guessing and privileged...

article

A novel optimized neutrosophic k-means using genetic algorithm for skin lesion detection in dermoscopy images

Amira S. Ashour, Ahmed Refaat Hawas, Yanhui Guo, Maram A. Wahba

Signal, Image and Video Processing > 2018 > 12 > 7 > 1311-1318

This paper implemented a new skin lesion detection method based on the genetic algorithm (GA) for optimizing the neutrosophic set (NS) operation to reduce the indeterminacy on the dermoscopy images. Then, k-means clustering is applied to segment the skin lesion regions. Therefore, the proposed method is called optimized neutrosophic k-means (ONKM). On the training images set, an initial value of $$\alpha...

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NEUTROSOPHIC SET (17)
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INFONA - science communication portal

Search results for: Yanhui Guo

Torsional Control of Frustrated Lewis Pair Behaviour Involving PNP‐type Phosphines

Fabrication of Ultra‐Durable and Flexible NiP_x‐Based Electrode toward High‐Efficient Alkaline Seawater Splitting at Industrial Grade Current Density

Alloying Co Species into Ordered and Interconnected Macroporous Carbon Polyhedra for Efficient Oxygen Reduction Reaction in Rechargeable Zinc–Air Batteries

Monolithic Ni‐Mo‐B Bifunctional Electrode for Large Current Water Splitting

Ignition and Combustion Behaviors of High Energetic Polyhedral Boron Cluster

Magnitude of the mixture hormetic response of soil alkaline phosphatase can be predicted based on single conditions of Cd and Pb

Time-Dependent Hormetic Response of Soil Alkaline Phosphatase Induced by Cd and the Association with Bacterial Community Composition

Hyperspectral image classification with SVM and guided filter

Facile Synthesis of Unsolvated Alkali Metal Octahydrotriborate Salts MB₃H₈ (M=K, Rb, and Cs), Mechanisms of Formation, and the Crystal Structure of KB₃H₈

Facile Synthesis of Unsolvated Alkali Metal Octahydrotriborate Salts MB₃H₈ (M=K, Rb, and Cs), Mechanisms of Formation, and the Crystal Structure of KB₃H₈

An optimized Mamdani FPD controller design of cardiac pacemaker

Centroid tracking and velocity measurement of white blood cell in video

Ensemble of subspace discriminant classifiers for schistosomal liver fibrosis staging in mice microscopic images

Transfer learning based histopathologic image classification for breast cancer detection

Highly efficient ferromagnetic CoBO catalyst for hydrogen generation

Comparative study of multiclass classification methods on light microscopic images for hepatic schistosomiasis fibrosis diagnosis

A hybrid dermoscopy images segmentation approach based on neutrosophic clustering and histogram estimation

Ultrafine Co Nanoparticles Encapsulated in Carbon‐Nanotubes‐Grafted Graphene Sheets as Advanced Electrocatalysts for the Hydrogen Evolution Reaction

Cryptanalysis and improvement of 2 mutual authentication schemes for Session Initiation Protocol

A novel optimized neutrosophic k-means using genetic algorithm for skin lesion detection in dermoscopy images

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