Search results for: Xiaohua Li

Items from 1 to 20 out of 419 results

article

A Novel Method for Operation Monitoring of Thyristor Converter Based on Real‐Time Virtual Measurement of Valve Current in LCC‐HVDC

Yuchen He, Xiaohua Li, Shanshan Yin, Hao Li, more

IEEJ Transactions on Electrical and Electronic Engineering > 19 > 5 > 745 - 754

The thyristor converter is a core equipment for AC/DC hybrid power grids of high‐voltage direct current (HVDC) where overheating does harm to its reliability. In reality, overheating is closely related to the broken three‐phase symmetry when the AC side is disturbed. Particularly, when commutation failures occur, the valve forced to reconduct will suffer from severe short‐circuit current for a long...

article

Cathodal bilateral transcranial direct‐current stimulation regulates selenium to confer neuroprotection after rat cerebral ischaemia–reperfusion injury

Hui Wang, Wenlong Ma, Wenjie Hu, Xiaohua Li, more

The Journal of Physiology > 602 > 6 > 1175 - 1197

Abstract Non‐invasive transcranial direct‐current stimulation (tDCS) is a safe ischaemic stroke therapy. Cathodal bilateral tDCS (BtDCS) is a modified tDCS approach established by us recently. Because selenium (Se) plays a crucial role in cerebral ischaemic injury, we investigated whether cathodal BtDCS conferred neuroprotection via regulating Se‐dependent signalling in rat cerebral ischaemia–reperfusion...

article

Pharmacokinetic study of the interaction between luteolin and magnoflorine in rats

Lu Liu, Xiaohua Li

Chemical Biology & Drug Design > 103 > 1 > n/a - n/a

Both luteolin and magnoflorine have been reported to regulate the development of breast cancer, which makes them easier to co‐administrate. Luteolin was co‐administrated with magnoflorine to evaluate their potential interaction. The pharmacokinetic study was performed on male Sprague–Dawley rats randomly grouped as the single administration of luteolin and the co‐administration of luteolin and magnoflorine...

article

Risk factors for the recurrence in pulmonary tuberculosis patients with massive hemoptysis

Qiong Lin, Jian Chen, Tianxing Yu, Bing Gao, more

The Clinical Respiratory Journal > 17 > 7 > 663 - 671

Objectives To evaluate the outcomes of bronchial artery embolization (BAE) for the treatment of massive hemoptysis in patients with pulmonary tuberculosis and identify risk factors that influence recurrence. Methods A total of 81 patients with massive hemoptysis who underwent BAE between January 2014 and December 2017 were retrospectively reviewed. All of the patients had either a history of pulmonary...

article

Silencing of COL3A1 represses proliferation, migration, invasion, and immune escape of triple negative breast cancer cells via down‐regulating PD‐L1 expression

Fan Yang, Ling Lin, Xiaohua Li, Ronglan Wen, more

Cell Biology International > 46 > 11 > 1959 - 1969

This study is designed to illuminate the specific role and underlying mechanism of collagen type III alpha 1 chain (COL3A1) in triple negative breast cancer (TNBC). Quantitative real‐time polymerase chain reaction was applied to examine mRNA expression of COL3A1. Western blot analysis was employed to determine protein levels of COL3A1, programmed death ligand 1 (PD‐L1), Bcl‐2, and cleaved caspase‐3...

article

Stereoselective β‐Mannosylation via Anomeric O‐Alkylation with L‐Sugar‐Derived Electrophiles

Ishani Lakshika Hettiarachchi, Shuai Meng, Mira Chahine, Xiaohua Li, more

European Journal of Organic Chemistry > 2021 > 48 > 6682 - 6687

A total synthesis of the trisaccharide repeat unit of Salmonella serogroup E1 O‐antigen is reported. This synthesis features a key β‐mannosylation reaction through a cesium carbonate‐mediated anomeric O‐alkylation of a partially protected D‐mannose with an L‐fucose‐derived electrophile for the first time.

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

Single‐Crystal‐Layered Ni‐Rich Oxide Modified by Phosphate Coating Boosting Interfacial Stability of Li₁₀SnP₂S₁₂‐Based All‐Solid‐State Li Batteries

Xiaohua Li, Zhao Jiang, Dan Cai, Xiuli Wang, more

Small > 17 > 47 > n/a - n/a

All‐solid‐state lithium batteries (ASSLBs) adopting sulfide electrolytes and high‐voltage layered oxide cathodes have moved into the mainstream owing to their superior safety and immense potential in high energy density. However, the poor electrochemical compatibility between oxide cathodes and sulfide electrolytes remains a challenge for high‐performance ASSLBs. In this study, a nanoscale Li_1.4Al...

article

Suspended MoS₂ Photodetector Using Patterned Sapphire Substrate

Xinke Liu, Shengqun Hu, Jiangliu Luo, Xiaohua Li, more

Small > 17 > 43 > n/a - n/a

The introduction of patterned sapphire substrates (PSS) has been regarded as an effective method to improve the photoelectric performance of 2D layered materials in recent years. Molybdenum disulfide (MoS₂), an intriguing transition metal 2D materials with splendid photoresponse owing to a direct‐indirect bandgap transition at monolayer, shows promising optoelectronics applications. Here, a large‐scale,...

article

P‐35: An Analytical Method of Small‐Module Fracture Dropping Based on Finite‐Element Analysis

Xiaohua Li, Lei Zhu, Qing Guo, Wei Zhou, more

SID Symposium Digest of Technical Papers > 52 > 1 > 1196 - 1198

As the probability of fracture is very often during dropping. The fragment of TPM have effect on the reliability and yields of product. Therefore, it is obviously necessary to research the influent factors on fracture in RA dropping. In this paper, to finding out the main influent factors of fracture based on FEA and experimental verification, which could provide a key path to optimize design and...

article

Direct Determination of Interchain Transfer Constants of Benzyl Acrylate to Poly(Ethyl Acrylate) by RAFT Polymerization and Polymer Chromatography

Xiaohua Li, Yang Xue, Xinyu Ma, Ruiwei Guo

Macromolecular Chemistry and Physics > 222 > 12 > n/a - n/a

Interchain transfer is an important side reaction in radical polymerization of acrylates and has significant effects on both reaction kinetics and the resulting polymer microstructures. In this study, an effective method for direct determination of the interchain transfer constant (C_tr) is established via the combination of RAFT polymerization of a monomer in the presence of another prepared polymer...

article

Ethylammonium nitrate enhances the extraction of transition metal nitrates by tri‐n‐butyl phosphate (TBP)

Zheng Li, Zidan Zhang, Bieke Onghena, Xiaohua Li, more

AIChE Journal > 67 > 7 > n/a - n/a

Several molecular polar solvents have been used as solvents of the more polar phase in the solvent extraction (SX) of metals. However, the use of hydrophilic ionic liquids (ILs) as solvents has seldomly been explored for this application. Here, the hydrophilic IL ethylammonium nitrate (EAN), has been utilized as a polar solvent in SX of transition metal nitrates by tri‐n‐butyl phosphate (TBP). It...

article

24.2: Invited Paper: Study on Influential Factors of Image Quality for Laser Projection Television

Feixia Wang, Xiaohua Li, Junyi Wang, Yan Tu, more

SID Symposium Digest of Technical Papers > 52 > S1 > 155 - 157

There are some important attributes influencing image quality of the laser projection television, such as white level, black level, color saturation, and contour rendering. In this paper, just noticeable differences of these four attributes are measured by the method of the two alternative forced choice with the staircase method of 1 up 2 down. The similarities and differences of just noticeable differences...

article

Acne fulminans concomitant with vasculitis‐like symptoms mimicking Henoch‐Schoenlein purpura

Xiaoxi Xu, Xiaohua Li, Sushmita Pradhan, Wei Li

Pediatric Dermatology > 37 > 6 > 1169 - 1170

Acne fulminans is a severe form of acne vulgaris accompanied by systemic symptoms. A 17‐year‐old Chinese boy presented with an outbreak of necrotic lesions on his face eight days after the onset of palpable purpura, arthralgia, fever, abdominal pain, and proteinuria. He was successfully treated with oral prednisolone and isotretinoin. Vasculitis‐like symptoms are rarely reported in acne fulminans;...

article

GP73 facilitates hepatitis B virus replication by repressing the NF‐κB signaling pathway

Long Liu, Jianyong Zhu, Jing Yang, Xiaohua Li, more

Journal of Medical Virology > 92 > 12 > 3327 - 3335

Hepatitis B virus (HBV) chronically infects approximately 350 million people worldwide, and 600 000 deaths are caused by HBV‐related hepatic failure. Golgi protein 73 (GP73) is a serum biomarker for liver diseases, including chronic hepatitis B. Here, we determine the effect of HBV infection on GP73 production and characterized the role of GP73 in HBV replication. Initially, we show that GP73 is highly...

article

P‐59: An Analytical Method of Small Size Module Waving based on the Finite Element Simulation

Xiaohua Li, Bingchuan Zhang, Lei Zhu, Qing Guo, more

SID Symposium Digest of Technical Papers > 51 > 1 > 1562 - 1564

As the reason for the waving problem in small‐sized panel products is complex and diverse, waving issue is difficult to be solved. In order to solve the waving issue, finding out the reason is one of the most critical parts. Therefore, the effect of the internal and external stress lead to the deformation of LGP are investigated and obtained basing on the finite element analysis software ABAQUS. And...

article

Study on Influential Factors of Image Quality for Laser Projection Television

Feixia Wang, Xiaohua Li, Junyi Wang, Yan Tu, more

SID Symposium Digest of Technical Papers > 51 > S1 > 82 - 84

article

Benefits of emissive display (OLED TV) from a visual perception

Kyongho Lim, Feixia Wang, Xiaohua Li, Yan Tu

SID Symposium Digest of Technical Papers > 51 > S1 > 76 - 81

OLED TVs have clear picture quality with a perfect visible angle, perfect black luminance and boast faster response times than LCD TVs. Therefore, the study major contents are Benefits of emitting devices (OLED TV) in terms of visual perception. The first study, we investigated the effects of the peripheral vision luminance level (PVL) and field of view (FOV) on the display brightness perceived by...

article

Evaluation of antioxidant properties of the different tissues of vine tea (Ampelopsis grossedentata) in stripped canola oil and sunflower oil

Caihua Jia, Mingxing Zhang, Weibo Ma, Jinghuan Li, more

Journal of Food Science > 85 > 4 > 1082 - 1089

Abstract The leaves of Ampelopsis grossedentata have a long history of use as a health tea and herbal medicine. Data on the distribution of active metabolites in, and antioxidant capacities of, different vine tea tissues remain incomplete. The aim of this work was to investigate the content of metabolites from A. grossedentata different tissues and evaluate the antioxidant capacities of the extraction...

article

β‐Mannosylation through O‐Alkylation of Anomeric Cesium Alkoxides: Mechanistic Studies and Synthesis of the Hexasaccharide Core of Complex Fucosylated N‐Linked Glycans

Shuai Meng, Bishwa Raj Bhetuwal, Hai Nguyen, Xiaotian Qi, more

European Journal of Organic Chemistry > 2020 > 15 > 2291 - 2301

Several structurally diverse d‐mannose‐derived lactols, including various deoxy‐d‐mannoses and conformationally restricted bicyclic d‐mannoses, have been synthesized and investigated in mechanistic studies of β‐mannosylation through Cs₂CO₃‐mediated anomeric O‐alkylation. It was found that deoxy mannoses or conformationally restricted bicyclic d‐mannoses are not as reactive as their corresponding parent...

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INFONA - science communication portal

Search results for: Xiaohua Li

A Novel Method for Operation Monitoring of Thyristor Converter Based on Real‐Time Virtual Measurement of Valve Current in LCC‐HVDC

Cathodal bilateral transcranial direct‐current stimulation regulates selenium to confer neuroprotection after rat cerebral ischaemia–reperfusion injury

Pharmacokinetic study of the interaction between luteolin and magnoflorine in rats

Risk factors for the recurrence in pulmonary tuberculosis patients with massive hemoptysis

Silencing of COL3A1 represses proliferation, migration, invasion, and immune escape of triple negative breast cancer cells via down‐regulating PD‐L1 expression

Stereoselective β‐Mannosylation via Anomeric O‐Alkylation with L‐Sugar‐Derived Electrophiles

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

Single‐Crystal‐Layered Ni‐Rich Oxide Modified by Phosphate Coating Boosting Interfacial Stability of Li₁₀SnP₂S₁₂‐Based All‐Solid‐State Li Batteries

Suspended MoS₂ Photodetector Using Patterned Sapphire Substrate

P‐35: An Analytical Method of Small‐Module Fracture Dropping Based on Finite‐Element Analysis

Direct Determination of Interchain Transfer Constants of Benzyl Acrylate to Poly(Ethyl Acrylate) by RAFT Polymerization and Polymer Chromatography

Ethylammonium nitrate enhances the extraction of transition metal nitrates by tri‐n‐butyl phosphate (TBP)

24.2: Invited Paper: Study on Influential Factors of Image Quality for Laser Projection Television

Acne fulminans concomitant with vasculitis‐like symptoms mimicking Henoch‐Schoenlein purpura

GP73 facilitates hepatitis B virus replication by repressing the NF‐κB signaling pathway

P‐59: An Analytical Method of Small Size Module Waving based on the Finite Element Simulation

Study on Influential Factors of Image Quality for Laser Projection Television

Benefits of emissive display (OLED TV) from a visual perception

Evaluation of antioxidant properties of the different tissues of vine tea (Ampelopsis grossedentata) in stripped canola oil and sunflower oil

β‐Mannosylation through O‐Alkylation of Anomeric Cesium Alkoxides: Mechanistic Studies and Synthesis of the Hexasaccharide Core of Complex Fucosylated N‐Linked Glycans

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