Search results for: Wei Chen

Items from 1 to 20 out of 10,387 results

article

Role of the Lumbosacral Transition Vertebra and Vertebral Lamina in the Pathogenesis of Lumbar Disc Herniation

Lin Jin, Yingchao Yin, Wei Chen, Ruipeng Zhang, more

Orthopaedic Surgery > 13 > 8 > 2355 - 2362

Objective To investigate the prevalence of lumbosacral transition vertebrae (LSTVs) in both the normal population and the lumbar disc herniation (LDH) population and to determine the risk factors for LDH. Methods Between January 2019 and September 2020, all patients aged 18–39 years and underwent an anteroposterior (AP) X‐ray of the lumbar vertebrae were retrospective reviewed in our institution...

article

Anterior Selective Lumbar Fusion Saving More Distal Fusion Segments Compared with Posterior Approach in the Treatment of Adolescent Idiopathic Scoliosis with Lenke Type 5: A Cohort Study with More Than 8‐Year Follow‐up

Zhi‐wei Wang, Yuan‐qing Shen, Yan Wu, Jun Li, more

Orthopaedic Surgery > 13 > 8 > 2327 - 2334

Objective To investigate whether anterior selective fusion (ASF) could save more distal fusion segments compared with posterior approach in the treatment of Lenke type 5 adolescent idiopathic scoliosis with long term follow‐up. Methods A retrospective cohort study. From 2008 to 2011, 22 AIS girls with Lenke type 5 who underwent ASF or posterior selective fusion (PSF) with more than 8‐year follow‐up,...

article

Ligand‐binding properties of odorant‐binding protein 6 in Athetis lepigone to sex pheromones and maize volatiles

Lu‐Lu Li, Jian‐Rong Huang, Ji‐Wei Xu, Wei‐Chen Yao, more

Pest Management Science > 78 > 1 > 52 - 62

BACKGROUND Athetis lepigone, a noctuid moth feeding on more than 30 different crops worldwide, has evolved a sophisticated, sensitive, and specific chemosensory system to detect and discriminate exogenous chemicals. Odorant‐binding proteins (OBPs) are the most important agent in insect chemosensory systems to be explored as an alternative target for environmentally friendly approaches to pest management...

article

Organic Field Effect Transistor‐Based Photonic Synapses: Materials, Devices, and Applications

Qing Zhang, Tengyu Jin, Xin Ye, Dechao Geng, more

Advanced Functional Materials > 31 > 49 > n/a - n/a

Photonic artificial synapses‐based neuromorphic computing systems have been regarded as promising candidates for replacing von Neumann‐based computing systems due to the high bandwidth, ultrafast signal transmission, low energy consumption, and wireless communication. Although significant progress has been made in developing varied device structures for synaptic emulation, organic field‐effect transistors...

article

Longitudinal Multiparametric MRI Assessment of Irradiated Salivary Gland in a Rat Model: Correlated With Histological Findings

Wei Chen, Guo‐Yi Su, Yan Zhou, Jia‐Suo Jiang, more

Journal of Magnetic Resonance Imaging > 54 > 6 > 1730 - 1741

Background Several magnetic resonance imaging (MRI) sequences have been applied to assess injured glands but without histological validation. Purpose To evaluate longitudinal changes in multiparametric MRI (mp‐MRI) of irradiated salivary glands in a rat model and investigate correlations between mp‐MRI and histological findings. Study Type Prospective. Animal Model Submandibular glands of 36...

article

Accuracy of 3D Printed Implant Casts Versus Stone Casts: A Comparative Study in the Anterior Maxilla

Ayman Banjar, Yo‐wei Chen, Aikaterini Kostagianni, Matthew Finkelman, more

Journal of Prosthodontics > 30 > 9 > 783 - 788

Purpose To conduct an in vitro comparison of the amount of three‐dimensional (3D) deviation of 3D printed casts generated from digital implant impressions with an intraoral scanner (IOS) to stone casts made of conventional impressions. Material and Methods A maxillary master cast with partially edentulous anterior area was fabricated with two internal connection implants (Regular CrossFit, Straumann)...

article

An atlas of bacterial secondary metabolite biosynthesis gene clusters

Bin Wei, Ao‐Qi Du, Zhen‐Yi Zhou, Cong Lai, more

Environmental Microbiology > 23 > 11 > 6981 - 6992

Bacterial secondary metabolites are rich sources of novel drug leads. The diversity of secondary metabolite biosynthetic gene clusters (BGCs) in genome‐sequenced bacteria, which will provide crucial information for the efficient discovery of novel natural products, has not been systematically investigated. Here, the distribution and genetic diversity of BGCs in 10 121 prokaryotic genomes (across 68...

article

Chiral separation materials based on derivatives of 6‐amino‐6‐deoxyamylose

Ya‐Ya Gao, Yu‐Hang Zhang, Shan Zhang, Wei Chen, more

Chirality > 33 > 12 > 899 - 914

In order to develop new type of chiral separation materials, in this study, 6‐amino‐6‐deoxyamylose was used as chiral starting material with which 10 derivatives were synthesized. The amino group in 6‐amino‐6‐deoxyamylose was selectively acylated and then the hydroxyl groups were carbamoylated yielding amylose 6‐amido‐6‐deoxy‐2,3‐bis(phenylcarbamate)s, which were employed as chiral selectors (CSs)...

article

Practical stability for switched affine systems via time‐dependent switching function

Xiaozeng Xu, Yang Li, Hongbin Zhang, Wei Chen, more

International Journal of Robust and Nonlinear Control > 31 > 18 > 9731 - 9744

In this article, the stability analysis of both continuous‐time switched affine systems discrete‐time switched affine systems is addressed via dwell time switching. Since the information of system states is difficult to obtain in the state‐dependent switching function, the time‐dependent switching function is considered to stabilize the switched affine system. The purpose of this article is to design...

article

Electrospun Fibers Improving Cellular Respiration via Mitochondrial Protection

Wei Chen, Dandan Zheng, Yanru Chen, Huitong Ruan, more

Small > 17 > 46 > n/a - n/a

Cellular respiration is the prerequisite for cell survival and functions, and mitochondrial function and microcirculation oxygen supply are essential for cellular respiration. However, in diabetic fracture, cellular respiration of bone marrow stem cells (BMSCs) is disrupted because of the dysfunction of mitochondria and microcirculation disorders. Here, the electrospun fibers of GelMA loaded with...

article

Leveraging real‐world evidence for determining performance goals for medical device studies

Chenguang Wang, Gary L. Rosner, Tingting Bao, Nelson Lu, more

Statistics in Medicine > 40 > 29 > 6577 - 6589

Performance goals are numerical target values pertaining to effectiveness or safety endpoints in single‐arm medical device clinical studies. Typically, performance goals are determined at the planning stage of the investigational study under consideration based on summarized outcome information from existing relevant clinical trials. In recent years, there is a growing interest in leveraging real‐world...

article

Identification and inference for subgroups with differential treatment efficacy from randomized controlled trials with survival outcomes through multiple testing

Yue Wei, Jason C. Hsu, Wei Chen, Emily Y. Chew, more

Statistics in Medicine > 40 > 29 > 6523 - 6540

With the uptake of targeted therapies, instead of the “one‐fits‐all” approach, modern randomized controlled trials (RCTs) often aim to develop treatments that target a subgroup of patients. Motivated by analyzing the Age‐Related Eye Disease Study (AREDS) data, a large RCT to study the efficacy of nutritional supplements in delaying the progression of an eye disease, age‐related macular degeneration...

article

Charging scheduling strategy for linear wireless power transfer network with external power injection

Jingjing Yang, Yanwei Jiang, Zhezhuang Xu, Wei Chen

International Journal of Circuit Theory and Applications > 49 > 11 > 3826 - 3844

Wireless power transfer network (WPTN) can provide efficient, timely, and dynamic charging service for multiple devices wirelessly by adopting mobile chargers. However, there are still urgent requirements to reduce the cost and improve the charging performance of WPTN. Therefore, this paper proposes the charging scheduling strategy for linear WPTN in which devices are distributed linearly or approximately...

article

Simultaneous determination of nine tyrosine kinase inhibitors in three complex biological matrices by using high‐performance liquid chromatography–diode array detection combined with a second‐order calibration method

Zhao‐Yang Wang, Hai‐Long Wu, Yue‐Yue Chang, Tong Wang, more

Journal of Separation Science > 44 > 21 > 3914 - 3923

An intelligent chemometric second‐order calibration method called alternating trilinear decomposition‐ assisted multivariate curve resolution combined with high‐performance liquid chromatography–diode array detection was used for the simultaneous quantification of nine tyrosine kinase inhibitors in three complex biological systems. The method allows simultaneous quantification of the components in...

article

DC resistance degradation of SrTiO₃: The role of virtual‐cathode needles and oxygen bubbles

Ana Alvarez, I‐Wei Chen

Journal of the American Ceramic Society > 105 > 1 > 362 - 383

This study of highly accelerated lifetime tests of SrTiO₃, a model semiconducting oxide, is motivated by the interest in reliable multilayer ceramic capacitors and resistance‐switching thin‐film devices. Our analytical solution to oxygen‐vacancy migration under a DC voltage—the cause of resistance degradation in SrTiO₃—agrees with previous numerical solutions. Yet all solutions fail to explain why...

article

Electrode‐Less MnO₂‐Metal Batteries with Deposition and Stripping Chemistry

Mingming Wang, Na Chen, Zhengxin Zhu, Yahan Meng, more

Small > 17 > 44 > n/a - n/a

Electrode materials are key components in typical batteries, where the electrodes are generally fabricated onto current collectors in solid forms and are isolated by a separator. However, the preparation of the electrodes increases the fabrication complexity, which speeds down their large‐scale production. Here, series of static electrode‐less MnO₂‐metal batteries are presented that are facilely fabricated...

article

Ion‐Inserted Metal–Organic Frameworks Accelerate the Mass Transfer Kinetics in Lithium–Sulfur Batteries

Mingjie Zhou, Yaoyao Li, Tianyu Lei, Wei Chen, more

Small > 17 > 44 > n/a - n/a

Lithium–sulfur battery promises great potential to promote the reform of energy storage field. Modified functional interlayer on separator has been recognized as efficient method to promote battery performances, mainly focusing on the entrapment and catalytic effect toward lithium polysulfide, while the mass transfer property across the interlayers has not been carefully considered. Herein, a dense...

article

Fenofibrate inhibits hypoxia‐inducible factor‐1 alpha and carbonic anhydrase expression through activation of AMP‐activated protein kinase/HO‐1/Sirt1 pathway in glioblastoma cells

Chingju Lin, Sheng‐Wei Lai, Ching‐Kai Shen, Chao‐Wei Chen, more

Environmental Toxicology > 36 > 12 > 2551 - 2561

Cancer and its associated conditions have significant impacts on public health at many levels worldwide, and cancer is the leading cause of death among adults. Peroxisome proliferator‐activated receptor α (PPARα)‐specific agonists, fibrates, have been approved by the Food and Drug Administration for managing hyperlipidemia. PPARα‐specific agonists exert anti‐cancer effects in many human cancer types,...

article

Noninvasive assessment of myocardial energy metabolism and dynamics using in vivo deuterium MRS imaging

Tao Wang, Xiao‐Hong Zhu, Huan Li, Yi Zhang, more

Magnetic Resonance in Medicine > 86 > 6 > 2899 - 2909

Purpose The assessment of cellular energy metabolism is crucial for understanding myocardial physiopathology. Here, we conducted a pilot study to develop an alternative imaging approach for the assessment of myocardial energy metabolism. Methods We developed a deuterium MRSI method to noninvasively monitor the accumulation of deuterated downstream metabolites and deuterated water in rat hearts...

article

Matrix Manipulation of Directly‐Synthesized PbS Quantum Dot Inks Enabled by Coordination Engineering

Fei Li, Yang Liu, Guozheng Shi, Wei Chen, more

Advanced Functional Materials > 31 > 45 > n/a - n/a

The direct‐synthesis of conductive PbS quantum dot (QD) ink is facile, scalable, and low‐cost, boosting the future commercialization of optoelectronics based on colloidal QDs. However, manipulating the QD matrix structures still is a challenge, which limits the corresponding QD solar cell performance. Here, for the first time a coordination‐engineering strategy to finely adjust the matrix thickness...

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INFONA - science communication portal

Search results for: Wei Chen

Role of the Lumbosacral Transition Vertebra and Vertebral Lamina in the Pathogenesis of Lumbar Disc Herniation

Anterior Selective Lumbar Fusion Saving More Distal Fusion Segments Compared with Posterior Approach in the Treatment of Adolescent Idiopathic Scoliosis with Lenke Type 5: A Cohort Study with More Than 8‐Year Follow‐up

Ligand‐binding properties of odorant‐binding protein 6 in Athetis lepigone to sex pheromones and maize volatiles

Organic Field Effect Transistor‐Based Photonic Synapses: Materials, Devices, and Applications

Longitudinal Multiparametric MRI Assessment of Irradiated Salivary Gland in a Rat Model: Correlated With Histological Findings

Accuracy of 3D Printed Implant Casts Versus Stone Casts: A Comparative Study in the Anterior Maxilla

An atlas of bacterial secondary metabolite biosynthesis gene clusters

Chiral separation materials based on derivatives of 6‐amino‐6‐deoxyamylose

Practical stability for switched affine systems via time‐dependent switching function

Electrospun Fibers Improving Cellular Respiration via Mitochondrial Protection

Leveraging real‐world evidence for determining performance goals for medical device studies

Identification and inference for subgroups with differential treatment efficacy from randomized controlled trials with survival outcomes through multiple testing

Charging scheduling strategy for linear wireless power transfer network with external power injection

Simultaneous determination of nine tyrosine kinase inhibitors in three complex biological matrices by using high‐performance liquid chromatography–diode array detection combined with a second‐order calibration method

DC resistance degradation of SrTiO₃: The role of virtual‐cathode needles and oxygen bubbles

Electrode‐Less MnO₂‐Metal Batteries with Deposition and Stripping Chemistry

Ion‐Inserted Metal–Organic Frameworks Accelerate the Mass Transfer Kinetics in Lithium–Sulfur Batteries

Fenofibrate inhibits hypoxia‐inducible factor‐1 alpha and carbonic anhydrase expression through activation of AMP‐activated protein kinase/HO‐1/Sirt1 pathway in glioblastoma cells

Noninvasive assessment of myocardial energy metabolism and dynamics using in vivo deuterium MRS imaging

Matrix Manipulation of Directly‐Synthesized PbS Quantum Dot Inks Enabled by Coordination Engineering

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