Hejie Wang

Flood exposure during pregnancy and risk of preterm birth: A study of 25 countries from Africa

Yuan ZHENG, Hejie Wang, Yi-Xiang HUANG, Wan PENG et autres

As climate change intensifies, floods are increasingly disrupting maternal healthcare access, elevating stress, and heightening infection risks—all established triggers for preterm birth (PTB). Investigating this association is therefore an urgent public health priority, particularly in African countries, which bear a high burden …

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Synergistically Boosting the Surface Reaction Dynamics by K + Interstitial Doping in Pd/WO 3 Nanosheets for Robust Hydrogen Sensing

Hejie Wang, Hao-Nan Chen, Xuan-Yu Yang, Fei-Long Gong et autres

The development of highly sensitive and reliable hydrogen detection technology is a critical prerequisite for the safe and large-scale application of green hydrogen energy. Pd-based metal oxide semiconductor sensors exhibit decent sensing performance; however, their development for hydrogen detection is hindered by …

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Chronic Ozone Exposure and Its Role in the Development of Age-Related Cataracts: A Comprehensive Analysis

Li-Xin Zhou, Jiehao Li, Chenyan Zeng, Xiaojie Li et autres

High Resolution Image Download MS PowerPoint Slide Ambient ozone (O 3 ) is a potent oxidizing agent and a major contributor to the global disease burden; however, limited evidence is known about the relationship between ambient O 3 and age-related cataracts. This …

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Electronic structure modulation of Pt sites enabled by Na doped WO3 for ultrasensitive detection of H2S

Xuanyu Yang, Hejie Wang, Haonan Chen, Li-Juan Yue et autres

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Helicobacter pylori Infection and Eradication in Relation to Gastroesophageal Reflux Disease

Hejie Wang, Yaxin Qu, Lin Yuan, Zhiqiang Liu et autres

BACKGROUND AND AIM: The effect of Helicobacter pylori (H. pylori) infection and eradication on the risk of gastroesophageal reflux disease (GERD) is still unclear. METHODS: We conducted a systematic review with a comprehensive literature search in the bibliographic databases Embase, Medline, and …

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A novel two-stage feature selection method based on random forest and improved genetic algorithm for enhancing classification in machine learning

Junyao Ding, Jianchao Du, Hejie Wang, Song Xiao

The data acquisition methods are becoming increasingly diverse and advanced, leading to higher data dimensions, blurred classification boundaries, and overfitting datasets, affecting machine learning models' accuracy. Many studies have sought to improve model performance through feature selection. However, a single feature selection …

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Associations between Gestational Floods Exposure and Preterm Birth in 25 Low- and Middle-Income Countries

Yuan Zheng, Hejie Wang, Peng Wan, Yilin Li et autres

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Filtering Dense Dielectric Patch Antenna with a Pair of Step Arc-Shaped Slots

Wenzheng Sun, Hejie Wang

This paper proposes a novel dense dielectric patch antenna (DDPA) with a flltering function, featuring an arc-shaped silver-plated patch. The antenna is composed of a dense dielectric patch (DDP) and a dual-layer PCB. A pair of stepped arc-shaped slots are designed on …

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Broadband Cavity Filter Using Coaxial Resonator

Hejie Wang, Wenzheng Sun, Yiwei Sun, Yuzheng Wu

This paper presents a metal cavity broadband bandpass filter, which incorporates two pairs of short-circuited metal cylinders within a cylindrical resonant cavity. Three independent resonant modes are excited in the resonant cavity to form a passband. The first two resonant modes are …

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Clinical Impact of High-dose Esomeprazole-amoxicillin Dual Therapy as Rescue Treatment for Helicobacter pylori Infection

Chao Wang, Hejie Wang, Keng Li, Yin Wang et autres

OBJECTIVE: This study aimed to compare the effectiveness and safety of high-dose dual therapy (HDDT) using esomeprazole and amoxicillin to furazolidone-based quadruple therapy (FBQT) in treating nonresponsive patients with Helicobacter pylori ( H. pylori ) infection. MATERIALS AND METHODS: A total of …

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A compact wideband filtering rectangular dielectric resonator antenna with U-shaped metal strips

Kang Tian, Dong‐Sheng La, Hejie Wang, Siyang Sun

In this paper, a compact wideband filtering rectangular dielectric resonator antenna (RDRA) loaded with a pair of U-shaped metal strips is proposed. By using a slot-coupled feeding structure, a rectangular DR with a length–width ratio of 3:1 is selected to combine the …

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Triple-Band Rectangular Cavity Bandpass Filter Based on Multiple Odd Modes

Linqi Li, Hejie Wang, Yujiao Zhang, Wenzheng Sun

This article proposes a triple-band bandpass filter with two H -shaped short-circuit columns and two $\Pi$-shaped shortcircuit rings loaded in a rectangular resonant cavity. Six odd modes are excited in the resonant cavity, with each two modes forming a passband, resulting in …

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