Search results for: Yi Zhang

Items from 1 to 20 out of 6,088 results

article

Neural oscillations and learning performance vary with an instructor's gestures and visual materials in video lectures

Zhongling Pi, Yabo Zhang, Qiuchen Yu, Yi Zhang, more

British Journal of Educational Technology > 53 > 1 > 93 - 113

Instructors' speech and gestures are tightly integrated. However, little is known about the neural mechanisms by which different types of gestures affect learning. We conducted two experiments on the effects of gestures in video lectures that included an instructor and slides, with English vocabulary as the topic. In Experiment 1, we manipulated the instructor's gestures (beat gestures vs. pointing...

article

Interfacial Engineering of Wide‐Bandgap Perovskites for Efficient Perovskite/CZTSSe Tandem Solar Cells

Deng Wang, Hongling Guo, Xin Wu, Xiang Deng, more

Advanced Functional Materials > 32 > 2 > n/a - n/a

Wide‐bandgap perovskites have attracted substantial attention due to their important role in serving as a top absorber in tandem solar cells (TSCs). However, wide‐bandgap perovskite solar cells (PVSCs) typically suffer from severe non‐radiative recombination loss and therefore exhibit high open‐circuit voltage (V_OC) deficits. To address these issues, a 2D octyl‐diammonium lead iodide interlayer is...

article

Towards robust glucose chemical exchange saturation transfer imaging in humans at 3 T: Arterial input function measurements and the effects of infusion time

Anina Seidemo, Patrick M. Lehmann, Anna Rydhög, Ronnie Wirestam, more

NMR in Biomedicine > 35 > 2 > n/a - n/a

Dynamic glucose‐enhanced (DGE) magnetic resonance imaging (MRI) has shown potential for tumor imaging using D‐glucose as a biodegradable contrast agent. The DGE signal change is small at 3 T (around 1%) and accurate detection is hampered by motion. The intravenous D‐glucose injection is associated with transient side effects that can indirectly generate subject movements. In this study, the aim was...

article

3D visualization and morphometric analysis of spinal motion segments and vascular networks: A synchrotron radiation‐based micro‐CT study in mice

Zhu Guo, Chengjun Li, Yong Cao, Liyuan Jiang, more

Journal of Anatomy > 240 > 2 > 268 - 278

The structure of spinal motion segments and spinal vasculature is complicated. Visualizing the three‐dimensional (3D) structure of the spine may provide guidance for spine surgery. However, conventional imaging techniques fail to simultaneously obtain 3D images of soft and hard tissues, and achieving such coimaging states of the spine and its vascular networks remains a challenge. Synchrotron radiation...

article

Analogous Optical Activity in Free Space Using a Single Pancharatnam–Berry Phase Element

Sheng Liu, Shuxia Qi, Peng Li, Bingyan Wei, more

Laser & Photonics Reviews > 16 > 1 > n/a - n/a

It is commonly believed that optical activity (OA) is manifested mainly in chiral media, but rare in non‐chiral structures. Here, an analog of OA in free space is experimentally demonstrated by using a single liquid‐crystal Pancharatnam–Berry phase element (PBPE), for which the mechanism is highly consistent with that of the traditional OA. The specifically designed PBPE supports the direction‐dependent...

article

Speedup of discrete Fourier transform by efficient modular arithmetic

Yi Zhang, Mengdi Sun, Xin Qi

Concurrency and Computation: Practice and Experience > 34 > 3 > n/a - n/a

The fast Fourier transform (FFT) based on modular arithmetic can compute convolution without round‐off errors, which is desirable in many applications such as computational algebra and combinatory pattern matching. One of the critical challenges of the FFT is to enhance the performance. An effective approach is to optimize the high‐cost operations. Modular reduction is one of the most frequently used...

article

The de Winter electrocardiographic pattern evolves to ST elevation in acute total left main occlusion: A case series

Chun‐Wei Liu, Jing‐Xia Zhang, Yue‐Cheng Hu, Le Wang, more

Annals of Noninvasive Electrocardiology > 27 > 1 > n/a - n/a

The de Winter electrocardiographic (ECG) pattern was characterized by upsloping ST‐segment depressions, tall and positive symmetrical T waves in precordial leads. This rare ECG pattern was recognized as an indication of proximal left anterior descending artery occlusion. Less commonly, this ECG pattern was reported in association with occlusion of other coronary artery segments. We present three cases...

article

Prediction and characterization of the T cell epitopes for the major soybean protein allergens using bioinformatics approaches

Fanlin Zhou, Shudong He, Yi Zhang, Yongfei Wang, more

Proteins: Structure, Function, and Bioinformatics > 90 > 2 > 418 - 434

Protein allergens is a health risk for consumption of soybeans. To understand allerginicity mechanism, T cell epitopes of 7 soybean allergens were predicted and screened by abilities to induce cytokine interleukin (IL) 4. The relationships among amino acid composition, properties, allergenicity, and pepsin hydrolysis sites were analyzed. Among the 138 T cell epitopes identified, YIKDVFRVIPSEVLS, KDVFRVIPSEVLSNS,...

article

Pseudomonas syringae activates ZAT18 to inhibit salicylic acid accumulation by repressing EDS1 transcription for bacterial infection

Yuhan Gao, Ze Li, Chenyu Yang, Guangyue Li, more

New Phytologist > 233 > 3 > 1274 - 1288

Phytopathogens can manipulate plant hormone signaling to counteract immune responses; however, the underlying mechanism is mostly unclear. Here, we report that Pseudomonas syringae pv tomato (Pst) DC3000 induces expression of C2H2 zinc finger transcription factor ZAT18 in a jasmonic acid (JA)‐signaling‐dependent manner. Biochemical assays further confirmed that ZAT18 is a direct target of MYC2,...

article

Climate warming promotes deterministic assembly of arbuscular mycorrhizal fungal communities

Xinyu Xu, Yunpeng Qiu, Kangcheng Zhang, Fei Yang, more

Global Change Biology > 28 > 3 > 1147 - 1161

Arbuscular mycorrhizal fungi (AMF) significantly contribute to plant resource acquisition and play important roles in mediating plant interactions and soil carbon (C) dynamics. However, it remains unclear how AMF communities respond to climate change. We assessed impacts of warming and precipitation alterations (30% increase or decrease) on soil AMF communities, and examined major ecological processes...

article

Proton/Deuterium Magnetic Resonance Imaging of Rodents at 9.4T Using Birdcage Coils

Yi Zhang, Yang Gao, Ke Fang, Jingjing Ye, more

Bioelectromagnetics > 43 > 1 > 40 - 46

The purpose of the present study was to fabricate a volume coil for proton/deuterium magnetic resonance imaging (MRI) in rodents at 9.4 T. Two birdcage radiofrequency (RF) coils have been designed for proton/deuterium MRI: the rungs of two concentric birdcages were azimuthally interleaved with each other for better decoupling, and the two coils were tuned to 400.3 and 61.4 MHz for ¹H/²H resonance...

article

Optimization of Zn_1–xSn_xO Buffer Layer for Application in CZTSe Solar Cells with H₂‐Assisted Reactive Sputtering

Shengli Zhang, Jianyu Wu, Hongling Guo, Yali Sun, more

physica status solidi (a) > 218 > 24 > n/a - n/a

CdS thin films are commonly used as buffer layer in Cu₂ZnSnSe₄ (CZTSe) solar cells inherited from CuInGaSe₂ (CIGS) solar cells. However, in addition to the toxicity problems with Cd in conventional CdS buffer layers, the unfavorable band alignment at the CZTSe/CdS heterojunction confines the further improvement of CZTSe solar cells. ZnSnO (ZTO) is studied in this work as promising buffer layers for...

article

Habenular and mediodorsal thalamic connectivity predict persistent weight loss after laparoscopic sleeve gastrectomy

Jia Wang, Guanya Li, Yang Hu, Wenchao Zhang, more

Obesity > 30 > 1 > 172 - 182

Objective The aim of this study was to investigate laparoscopic sleeve gastrectomy (LSG)‐induced changes in connectivity between regions involved with reward/antireward and cognitive control and the extent to which these changes persist after surgery and predict sustainable weight loss. Methods Whole‐brain local functional connectivity density (lFCD) was studied in 25 participants with obesity...

article

In Situ Observation of Ferroelastic Domain and Phase Transition in a Three‐Dimensional Molecular Crystal

Sai‐Nan Cheng, Kun Ding, Tie Zhang, Zhi‐Xu Zhang, more

Chemistry – A European Journal > 27 > 70 > 17655 - 17659

Massive efforts have been devoted to designing molecular ferroic materials by molecular modification. For molecular ferroelastic, previous work is focused on the temperature‐dependent ferroelastic domains, however, few are related to controlling the ferroelastic domain by the stress. Inspired by the “quasi‐spherical theory” and fluorination effect, we designed a more flexible (MedabcoF)²⁺ (MedabcoF=1‐fluoro‐4‐methyl‐1,4‐diazoniabicyclo[2...

article

Diffusion MRI Based Myometrium Tractography for Detection of Placenta Accreta Spectrum Disorder

Guohui Yan, Yuhao Liao, Kui Li, Xiaodan Zhang, more

Journal of Magnetic Resonance Imaging > 55 > 1 > 255 - 264

Background Prenatal diagnosis of placenta accreta spectrum (PAS) disorders is difficult. Magnetic resonance imaging (MRI) has been shown to be a useful supplementary method to ultrasound. Purpose To investigate diffusion MRI (dMRI) based tractography as a tool for detecting PAS disorders, and to evaluate its performance compared with anatomical MRI. Study Type Prospective. Population Forty‐seven...

article

Screening of the freeze‐drying protective agent for high‐quality milk beer yeast (Kluyveromyces marxianus) and optimization of freeze‐drying process conditions

Liang Wang, Mingying He, Tao Wu, Kangye Yang, more

Journal of Food Processing and Preservation > 45 > 12 > n/a - n/a

Milk beer is a new type of milk beverage produced by two‐step fermentation of lactic acid bacteria and yeast and created first in China. Yeast is the key strain of milk beer fermentation, which determines the flavor and quality of milk beer. In this study, the preparation process of high‐quality yeast strain MJ1 active freeze‐dried powder suitable for milk beer fermentation was optimized. Results...

article

Synthesis of n‐alkylated quaternary ammonium chitosan and its long‐term antibacterial finish for rabbit hair fabric

Yingxue Jiang, Yi Zhang, Hao Zhang, Ruoying Zhu, more

Polymers for Advanced Technologies > 33 > 1 > 314 - 325

In this work, n‐alkyl chitosan (N‐CTS) was obtained by alkylation modification of chitosan with n‐butylaldehyde using Schiff alkali method. The etherifying agent 3‐chloro‐2‐hydroxypropyl triethylammonium chloride (CHPTAC‐ethyl) was synthesized from triethylamine and epichlorohydrin. The N‐CTS and CHPTAC‐ethyl were etherized to finally synthesize n‐alkyl quaternary ammonium chitosan (N‐CCTS). Scanning...

article

Pediatric asthma control during the COVID‐19 pandemic: A systematic review and meta‐analysis

Ze Yang, Xiang Wang, Xi‐gang Wan, Meng‐lei Wang, more

Pediatric Pulmonology > 57 > 1 > 20 - 25

Background With the onset of the coronavirus disease 2019 (COVID‐19) pandemic, many experts expected that asthma‐associated morbidity because of severe acute respiratory syndrome coronavirus 2 infection would dramatically increase. However, some studies suggested that there was no apparent increasing in asthma‐related morbidity in children with asthma, it is even possible children may have improved...

article

Clinical features of Chinese children with COVID‐19 and other viral respiratory infections

Zhen‐Zhen Zhang, Da‐Peng Chen, Quan‐Bo Liu, Chuan Gan, more

Pediatric Pulmonology > 57 > 1 > 49 - 56

Objective Few studies have explored the clinical features in children infected with SARS‐CoV‐2 and other common respiratory viruses, including respiratory syncytial virus (RSV), Influenza virus (IV), and adenovirus (ADV). Herein, we reported the clinical characteristics and cytokine profiling in children with COVID‐19 or other acute respiratory tract infections (ARTI). Methods We enrolled 20 hospitalized...

article

N‐Type Surface Design for p‐Type CZTSSe Thin Film to Attain High Efficiency

Yali Sun, Pengfei Qiu, Wei Yu, Jianjun Li, more

Advanced Materials > 33 > 49 > n/a - n/a

As a low‐cost substitute that uses no expensive rare‐earth elements for the high‐efficiency Cu(In,Ga)(S,Se)₂ solar cell, the Cu₂ZnSn(S,Se)₄ (CZTSSe) solar cell has borrowed optimization strategies used for its predecessor to improve its device performance, including a profiled band gap and surface inversion. Indeed, there have been few reports of constructing CZTSSe absorber layers with surface inversion...

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Search results for: Yi Zhang

Neural oscillations and learning performance vary with an instructor's gestures and visual materials in video lectures

Interfacial Engineering of Wide‐Bandgap Perovskites for Efficient Perovskite/CZTSSe Tandem Solar Cells

Towards robust glucose chemical exchange saturation transfer imaging in humans at 3 T: Arterial input function measurements and the effects of infusion time

3D visualization and morphometric analysis of spinal motion segments and vascular networks: A synchrotron radiation‐based micro‐CT study in mice

Analogous Optical Activity in Free Space Using a Single Pancharatnam–Berry Phase Element

Speedup of discrete Fourier transform by efficient modular arithmetic

The de Winter electrocardiographic pattern evolves to ST elevation in acute total left main occlusion: A case series

Prediction and characterization of the T cell epitopes for the major soybean protein allergens using bioinformatics approaches

Pseudomonas syringae activates ZAT18 to inhibit salicylic acid accumulation by repressing EDS1 transcription for bacterial infection

Climate warming promotes deterministic assembly of arbuscular mycorrhizal fungal communities

Proton/Deuterium Magnetic Resonance Imaging of Rodents at 9.4T Using Birdcage Coils

Optimization of Zn_1–xSn_xO Buffer Layer for Application in CZTSe Solar Cells with H₂‐Assisted Reactive Sputtering

Habenular and mediodorsal thalamic connectivity predict persistent weight loss after laparoscopic sleeve gastrectomy

In Situ Observation of Ferroelastic Domain and Phase Transition in a Three‐Dimensional Molecular Crystal

Diffusion MRI Based Myometrium Tractography for Detection of Placenta Accreta Spectrum Disorder

Screening of the freeze‐drying protective agent for high‐quality milk beer yeast (Kluyveromyces marxianus) and optimization of freeze‐drying process conditions

Synthesis of n‐alkylated quaternary ammonium chitosan and its long‐term antibacterial finish for rabbit hair fabric

Pediatric asthma control during the COVID‐19 pandemic: A systematic review and meta‐analysis

Clinical features of Chinese children with COVID‐19 and other viral respiratory infections

N‐Type Surface Design for p‐Type CZTSSe Thin Film to Attain High Efficiency

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