Search results for: Xi Wang

Items from 1 to 20 out of 1,875 results

article

A study of laser machining combined with dynamic chemical etching in micro‐hole drilling of 2.5D SiC_f/SiC composites

Dali Zhao, Shufeng Sun, Yunlong Zhang, Xi Wang, more

International Journal of Applied Ceramic Technology > 20 > 4 > 2522 - 2535

In this study, we used a novel method of laser machining combined with dynamic chemical liquid etching (LMDCE) to drill holes in 2.5D SiC_f/SiC ceramic matrix composites (CMC‐SiC). A chemical solution that could quickly remove the recast layer without damaging the substrate was selected. Severe recast layer and microcrack defects were observed when laser machining was performed in the air. The surface...

article

Exceptional Photocatalytic Hydrogen Peroxide Production from Sandwich‐Structured Graphene Interlayered Phenolic Resins Nanosheets with Mesoporous Channels

Qiang Tian, Xiang‐Kang Zeng, Chen Zhao, Ling‐Yan Jing, more

Advanced Functional Materials > 33 > 21 > n/a - n/a

Harnessing solar energy to produce hydrogen peroxide (H₂O₂) from water (H₂O) and dioxygen (O₂) via artificial photosynthesis is an attractive route. To achieve high solar‐to‐H₂O₂ conversion efficiency, herein, an interfacial self‐assembly strategy is adopted to pattern mesoporous resorcinol‐formaldehyde resin (MRF) onto reduced graphene oxide (rGO) to form sandwich‐structured rGO@MRF polymeric photocatalysts...

article

Jade material in vitro and in vivo: A study on the anti‐inflammatory and repair efficacy of jade material on the skin

Xiaohong Shu, Ling Wang, Ruina Qu, Li Li, more

International Journal of Cosmetic Science > 45 > 2 > 177 - 186

Objective The biological safety of natural jade materials and assembled jade‐activated materials on cells and their anti‐inflammatory and damage repair functions, as well as the repair function on sensitive skin, were studied utilizing in vitro cell biology and in vivo. Methods Human skin fibroblasts were used as model cells to conduct cytotoxicity experiments in vitro, and the effects on the expression...

article

A 90‐ to 115‐GHz superheterodyne receiver front‐end for W‐band imaging system in 28‐nm complementary metal‐oxide‐semiconductor

Xi Wang, Dong Wei, Zhiyang Zhang, Tianxiang Wu, more

International Journal of Circuit Theory and Applications > 51 > 4 > 1530 - 1547

In this paper, a broadband superheterodyne receiver (RX) front‐end for millimeter‐wave (mm‐Wave) imaging radar is presented. Realized in 28‐nm CMOS technology, the proposed RX incorporates a wideband low‐noise amplifier (LNA), double‐balanced passive mixers for the dual down‐conversion, a differential power divider, a differential intermediate frequency filters, a current‐mode‐logic divider‐by‐2,...

article

Bracelet salt glands of the recretohalophyte Limonium bicolor: Distribution, morphology, and induction

Boqing Zhao, Yingli Zhou, Xiangmei Jiao, Xi Wang, more

Journal of Integrative Plant Biology > 65 > 4 > 950 - 966

Halophytes complete their life cycles in saline environments. The recretohalophyte Limonium bicolor has evolved a specialized salt secretory structure, the salt gland, which excretes Na⁺ to avoid salt damage. Typical L. bicolor salt glands consist of 16 cells with four fluorescent foci and four secretory pores. Here, we describe a special type of salt gland at the base of the L. bicolor leaf petiole...

article

Comparing the prognosis of in vitro fertilization/intracytoplasmic sperm injection and embryo transfer between unexplained primary infertility patients with repeated artificial insemination with homologous semen failure and tubal infertility patients

Wenhong Ma, Zhonghong Zeng, Jiayan Xie, Xi Wang, more

Journal of Obstetrics and Gynaecology Research > 49 > 4 > 1206 - 1213

Background Both in vitro fertilization and embryo transfer (IVF‐ET) and intracytoplasmic sperm injection and embryo transfer (ICSI‐ET) have been recommended for unexplained primary infertility after recurrent artificial insemination with homologous semen failure (UAIHF), but few studies focused on the safety and efficiency of the IVF/ICSI‐ET technique for these patients. In this study, we compared...

article

Differences in air displacement plethysmography, bioelectrical impedance analysis and dual‐energy X‐ray absorptiometry for estimating body composition in Chinese children and adolescents

Yiwen Huang, Xi Wang, Hong Cheng, Hongbo Dong, more

Journal of Paediatrics and Child Health > 59 > 3 > 470 - 479

Aim This study aimed to compare body composition (BC) measurements obtained by three widely used BC measuring methods, air displacement plethysmography (ADP), bioelectrical impedance analysis (BIA) and dual‐energy X‐ray absorptiometry (DXA), in Chinese children and adolescents by sex and different BMI categories. Methods We used three BC measuring methods to evaluate healthy Chinese children and...

article

N1 versus N2 and PMN‐MDSC: A critical appraisal of current concepts on tumor‐associated neutrophils and new directions for human oncology

Benedict Boateng Antuamwine, Rebeka Bosnjakovic, Francisca Hofmann‐Vega, Xi Wang, more

Immunological Reviews > 314 > 1 > 250 - 279

Research on tumor‐associated neutrophils (TAN) currently surges because of the well‐documented strong clinical relevance of tumor‐infiltrating neutrophils. This relevance is illustrated by strong correlations between high frequencies of intratumoral neutrophils and poor outcome in the majority of human cancers. Recent high‐dimensional analysis of murine neutrophils provides evidence for unexpected...

article

Development of a risk score model for the prediction of patients needing percutaneous coronary intervention

Xi Wang, Yuping Lin, Feng Wang

Journal of Clinical Laboratory Analysis > 37 > 4 > n/a - n/a

Background The incidence of coronary heart disease (CHD) is increasing worldwide. The need for percutaneous coronary intervention (PCI) is determined by coronary angiography (CAG). As coronary angiography is an invasive and risky test for patients, it will be of great help to develop a predicting model for the assessment of the probability of PCI in patients with CHD using the test indexes and clinical...

article

Impact of implantation technique on conduction disturbances for TAVR with the self‐expanding portico/navitor valve

Xi Wang, Ivan Wong, Vilhelmas Bajoras, Maarten Vanhaverbeke, more

Catheterization and Cardiovascular Interventions > 101 > 2 > 431 - 441

Background Use of a right−left (R−L) cusp overlap view for transcatheter aortic valve replacement (TAVR) with self‐expanding valves has recently been proposed aiming to reduce permanent pacemaker implantation (PPMI). An objective, data‐driven explanation for this observation is missing. Aims To assess the impact of different implantation techniques on the risk of PPMI following TAVR with the Portico/Navitor...

article

Single‐Atom or Dual‐Atom in TiO₂ Nanosheet: Which is the Better Choice for Electrocatalytic Urea Synthesis?

Lu Pan, Jingnan Wang, Fei Lu, Qiang Liu, more

Angewandte Chemie International Edition > 62 > 8 > n/a - n/a

As rising star materials, single‐atom and dual‐atom catalysts have been widely reported in the electro‐catalysis area. To answer the key question: single‐atom and dual‐atom catalysts, which is better for electrocatalytic urea synthesis? we design two types of catalysts via a vacancy‐anchorage strategy: single‐atom Pd₁−TiO₂ and dual‐atom Pd₁Cu₁−TiO₂ nanosheets. An ultrahigh urea activity of 166.67...

article

Single‐Atom or Dual‐Atom in TiO₂ Nanosheet: Which is the Better Choice for Electrocatalytic Urea Synthesis?

Lu Pan, Jingnan Wang, Fei Lu, Qiang Liu, more

Angewandte Chemie > 135 > 8 > n/a - n/a

article

Improved microwave dielectric characteristics in CaHf₁₋_xTi_xO₃ ceramics

Xi Wang, Jun Zuo Shi, Xiao Li Zhu, Lei Li, more

Journal of the American Ceramic Society > 106 > 3 > 1823 - 1833

In the present work, effects of Ti‐substitution for Hf upon microwave dielectric characteristics for CaHfO₃ ceramics were investigated. CaHf₁₋_xTi_xO₃ solid solution in space group Pnma was determined in the present ceramics with x = 0–0.075, and only minor amount of secondary phases of CaHfO₃ (R

\bar{3} c

, 1.3 wt%) and Ca₂Hf₇O₁₆ (R

\bar{3}

, 0.8 wt%) was detected. The significantly improved...

article

Humoral and cellular immunity of two‐dose inactivated COVID‐19 vaccination in Chinese children: A prospective cohort study

Hao Wang, Mengze Gan, Bihao Wu, Rui Zeng, more

Journal of Medical Virology > 95 > 1 > n/a - n/a

Children are the high‐risk group for COVID‐19, and in need of vaccination. However, humoral and cellular immune responses of COVID‐19 vaccine remain unclear in vaccinated children. To establish the rational immunization strategy of inactivated COVID‐19 vaccine for children, the immunogenicity of either one dose or two doses of the vaccine in children was evaluated. A prospective cohort study of 322...

article

The paired‐related homeobox protein 1 promotes cardiac fibrosis via the Twist1‐Prrx1‐tenascin‐C loop

Fengyuan Wang, Hongyi Zhao, Lin Yin, Wei Zhang, more

Cell Biology International > 47 > 1 > 167 - 177

Cardiac fibrosis is a common pathology in the advanced stage of cardiovascular diseases, which leads to cardiac systolic and diastolic dysfunction. It is important to prevent cardiac fibrosis during myocardial injury. The transcription factor Prrx1 is involved in cancer‐associated fibrosis and other organ fibrosis. However, the role and mechanism of Prrx1 in cardiac fibrosis deserves further exploration...

article

Ki‐67 index assessment on FNA specimens of gastrointestinal stromal tumor: Correlation with mitotic rate and potential predictive value for risk stratification

Xi Wang, Rita Abi‐Raad, Haiming Tang, Guoping Cai

Cancer Cytopathology > 130 > 12 > 974 - 982

Background Risk assessment of gastrointestinal stromal tumor (GIST) is challenging on cytology specimens. This study aims to determine whether Ki‐67 index evaluated on fine‐needle aspiration (FNA) specimens can correlate with the mitotic rate of GIST in surgical specimens and provide further risk assessment. Methods Cases with cell blocks containing adequate tumor cells and surgical resections...

article

Iodine Promoted Synthesis of S‐Benzoazolyl Chromones by a Three‐Component One‐Pot Reaction

Xin‐Yi Jiang, Xi Wang, Cheng‐Li Yang, Zhi‐Bing Dong

European Journal of Organic Chemistry > 2022 > 46 > n/a - n/a

In the presence of iodine, the synthesis of S‐benzoazolyl chromone derivatives by one‐pot manner is reported. Thus, 2‐aminophenol firstly reacted with tetramethylthiuram disulfide (TMTD) to form 2‐mercaptobenzoxazole, and then coupled with 2‐hydroxyphenyl enaminones to obtain S‐benzoazolyl chromones through one‐pot manner. This method features mild conditions, easy operation, environmentally friendliness...

article

Facet Control of Nickel Nitride Nano‐Framework for Efficient Hydrogen Evolution Electrocatalysis via Auxiliary Cooling Assisted Plasma Engineering

Bo Ouyang, Yongqi Zhang, Xi Wang, Yilin Deng, more

Small > 18 > 49 > n/a - n/a

The precise facet modulation of transition metal nitrides (TMNs) has been regarded as an essential issue in boosting electrocatalytic H₂ production. Compared to thermal nitridation, the plasma technique serves as a favorable alternative to directly achieve TMNs, but the apparent surface heating effect during plasma treatment inevitably causes the thermally stabilized nitride formation, resulting in...

article

Bimetallic Catalysis in Stereodivergent Synthesis

Xiaohong Huo, Guanlin Li, Xi Wang, Wanbin Zhang

Angewandte Chemie International Edition > 61 > 45 > n/a - n/a

Bimetallic catalysis has emerged as an efficient strategy for the development of new chemical reactions. Importantly, this strategy also provides a simple and powerful platform for stereodivergent synthesis, whereby all the possible stereoisomers of products bearing two stereocenters can be easily prepared from the same set of starting materials. In this Minireview, the development of stereodivergent...

article

Bimetallic Catalysis in Stereodivergent Synthesis

Xiaohong Huo, Guanlin Li, Xi Wang, Wanbin Zhang

Angewandte Chemie > 134 > 45 > n/a - n/a

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INFONA - science communication portal

Search results for: Xi Wang

A study of laser machining combined with dynamic chemical etching in micro‐hole drilling of 2.5D SiC_f/SiC composites

Exceptional Photocatalytic Hydrogen Peroxide Production from Sandwich‐Structured Graphene Interlayered Phenolic Resins Nanosheets with Mesoporous Channels

Jade material in vitro and in vivo: A study on the anti‐inflammatory and repair efficacy of jade material on the skin

A 90‐ to 115‐GHz superheterodyne receiver front‐end for W‐band imaging system in 28‐nm complementary metal‐oxide‐semiconductor

Bracelet salt glands of the recretohalophyte Limonium bicolor: Distribution, morphology, and induction

Comparing the prognosis of in vitro fertilization/intracytoplasmic sperm injection and embryo transfer between unexplained primary infertility patients with repeated artificial insemination with homologous semen failure and tubal infertility patients

Differences in air displacement plethysmography, bioelectrical impedance analysis and dual‐energy X‐ray absorptiometry for estimating body composition in Chinese children and adolescents

N1 versus N2 and PMN‐MDSC: A critical appraisal of current concepts on tumor‐associated neutrophils and new directions for human oncology

Development of a risk score model for the prediction of patients needing percutaneous coronary intervention

Impact of implantation technique on conduction disturbances for TAVR with the self‐expanding portico/navitor valve

Single‐Atom or Dual‐Atom in TiO₂ Nanosheet: Which is the Better Choice for Electrocatalytic Urea Synthesis?

Single‐Atom or Dual‐Atom in TiO₂ Nanosheet: Which is the Better Choice for Electrocatalytic Urea Synthesis?

Improved microwave dielectric characteristics in CaHf₁₋_xTi_xO₃ ceramics

Humoral and cellular immunity of two‐dose inactivated COVID‐19 vaccination in Chinese children: A prospective cohort study

The paired‐related homeobox protein 1 promotes cardiac fibrosis via the Twist1‐Prrx1‐tenascin‐C loop

Ki‐67 index assessment on FNA specimens of gastrointestinal stromal tumor: Correlation with mitotic rate and potential predictive value for risk stratification

Iodine Promoted Synthesis of S‐Benzoazolyl Chromones by a Three‐Component One‐Pot Reaction

Facet Control of Nickel Nitride Nano‐Framework for Efficient Hydrogen Evolution Electrocatalysis via Auxiliary Cooling Assisted Plasma Engineering

Bimetallic Catalysis in Stereodivergent Synthesis

Bimetallic Catalysis in Stereodivergent Synthesis

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