Search results for: Xiaomei Zhang

Items from 1 to 20 out of 372 results

article

Automated layer identification and segmentation of x‐ray computer tomography imaged PCBs

Xiangyu Yun, Xiaomei Zhang, Yanfang Wang, Mohan Li, more

The non‐destructive inspection of Printed Circuit Boards (PCBs) through r‐ray Computer Tomography (CT) is a recently developed method that offers several advantages over traditional inspection techniques. This method is non‐invasive, quick, and offers high resolution, leading to significant improvements in inspection and repair efficiency. Post‐image analysis is an important step in PCB inspection...

article

Machine learning decision support model for discharge planning in stroke patients

Yanli Cui, Lijun Xiang, Peng Zhao, Jian Chen, more

Journal of Clinical Nursing > 33 > 8 > 3145 - 3160

Background/aim Efficient discharge for stroke patients is crucial but challenging. The study aimed to develop early predictive models to explore which patient characteristics and variables significantly influence the discharge planning of patients, based on the data available within 24 h of admission. Design Prospective observational study. Methods A prospective cohort was conducted at a university...

article

Dynamic changes in the gut microbiota after bismuth quadruple therapy and high‐dose dual therapy for Helicobacter pylori eradication

Jing Chen, Yan Zhang, Hanchen Min, Junli Zhi, more

Helicobacter > 29 > 2 > n/a - n/a

Background A novel regimen with high‐dose dual therapy (HDDT) has emerged, but its impact on the gut microbiota is not well understood. This study aimed to evaluate the impact of HDDT on the gut microbiota and compare it with that of bismuth quadruple therapy (BQT). Methods We enrolled outpatients (18–70 years) diagnosed with Helicobacter pylori infection by either histology or a positive ¹³C‐urea...

article

Enhanced synthesis of S‐adenosyl‐L‐methionine through combinatorial metabolic engineering and Bayesian optimization in Saccharomyces cerevisiae

Wenhan Xiao, Xiangliu Shi, Haowei Huang, Xiaogang Wang, more

Biotechnology Journal > 19 > 3 > n/a - n/a

S‐Adenosyl‐L‐methionine (SAM) is a substrate for many enzyme‐catalyzed reactions and provides methyl groups in numerous biological methylations, and thus has vast applications in the agriculture and medical field. Saccharomyces cerevisiae has been engineered as a platform with significant potential for producing SAM, but the current production has room for improvement. Thus, a method that consists...

article

Divergent Synthesis of Isoxazolo[5,4‐b]pyridines

Min Li, Wenzhe Li, Min Huang, Xiaomei Zhang

European Journal of Organic Chemistry > 27 > 9 > n/a - n/a

Isoxazolopyridines are highly significant for the development of pharmaceuticals and new materials. In continuation of our ongoing research on transformations of 5‐aminoisoxazoles, we report herein a divergent synthesis of two kinds of novel isoxazolo[5,4‐b] pyridines through condensation of 5‐aminoisoxazoles with β,γ‐alkynyl‐α‐imino esters. By using two different silver salts and a phosphoric acid...

article

Population genetic patterns across the native and invasive range of a widely distributed seagrass: Phylogeographic structure, invasive history and conservation implications

Xiaomei Zhang, Yu‐Long Li, James E. Kaldy, Zhaxi Suonan, more

Diversity and Distributions > 30 > 3 > n/a - n/a

Aim The seagrass Zostera japonica is a dramatically declined endemic species in the Northwestern Pacific from the (sub)tropical to temperate areas, however, it is also an introduced species along the Pacific coast of North America from British Columbia to northern California. Understanding the population's genetic patterns can inform the conservation and management of this species. Location North...

article

Manganese@Albumin Nanocomplex and Its Assembled Nanowire Activate TLR4‐Dependent Signaling Cascades of Macrophages

Shuodan Huang, Yan Gao, Huiying Li, Ruoran Wang, more

Advanced Materials > 36 > 5 > n/a - n/a

The immunomodulatory effect of divalent manganese cations (Mn²⁺), such as activation of the cGAS−STING pathway or NLRP3 inflammasomes, positions them as adjuvants for cancer immunotherapy. In this study, it is found that trace Mn²⁺ ions, bound to bovine serum albumin (BSA) to form Mn@BSA nanocomplexes, stimulate pro‐inflammatory responses in human‐ or murine‐derived macrophages through TLR4‐mediated...

article

Enhanced L‐serine production by Corynebacterium glutamicum based on novel insights into L‐serine exporters

Yujie Gao, Xiaomei Zhang, Guoqiang Xu, Xiaojuan Zhang, more

Biotechnology Journal > 19 > 1 > n/a - n/a

The L‐serine exporters ThrE and SerE play important roles in L‐serine production by Corynebacterium glutamicum. Deletion of both thrE and serE decreased L‐serine titer by 60%, suggesting the existence of other L‐serine exporters. A comparative transcriptomics identified NCgl0254 and NCgl0255 as novel L‐serine exporters. Further analysis of the contributions of ThrE, SerE, NCgl0254, and NCgl0255 found...

article

Antibody responses to SARS‐CoV‐2 Omicron infection in patients with hematological malignancies: A multicenter, prospective cohort study

Jun Li, Yi Liu, Xia Wei, Zhanshu Liu, more

Journal of Medical Virology > 95 > 12 > n/a - n/a

Little is known about antibody responses to natural Omicron infection and the risk factors for poor responders in patients with hematological malignancies (HM). We conducted a multicenter, prospective cohort study during the latest Omicron wave in Chongqing, China, aiming to compare the antibody responses, as assessed by IgG levels of anti‐receptor binding domain of spike protein (anti‐S‐RBD), to...

article

Proteomics Landscape Mapping of Organ‐Resolved Behçet's Disease Using In‐Depth Plasma Proteomics for Identifying Hyaluronic Binding Protein 2 Expression Associated With Vascular Involvement

Linlin Cheng, Dongxue Wang, Zhimian Wang, Haolong Li, more

Arthritis & Rheumatology > 75 > 3 > 424 - 437

Objective This study was undertaken to elucidate the pathogenesis and heterogeneity of Behçet's disease (BD) involving different organs using in‐depth proteomics to identify the biomarkers for clinical assessment and treatment of patients with BD. Methods We measured the expression levels of proteins in plasma samples from 98 patients with BD and from 31 healthy controls using our in‐depth proteomics...

article

Seagrass restoration using seed ball burial in northern China

Shaochun Xu, Yi Zhou, Yongliang Qiao, Shidong Yue, more

Restoration Ecology > 31 > 1 > n/a - n/a

As seagrass bed restoration by seeding becomes more common, it is necessary to develop a simple and reliable method to improve the efficiency of seed‐based restoration. In this study, we describe a novel method using seed ball burial for eelgrass restoration. Using this method, seeds were wrapped in a wet mud ball, which represented a transplant unit, and the balls were then buried in the sediment...

article

Microbial community composition and soil metabolism in the coexisting Cordyceps militaris and Ophiocordyceps highlandensis

Xiaorong Xu, Xiaomei Zhang, Zhipu Huang, Yuxiao Xu, more

Journal of Basic Microbiology > 62 > 10 > 1254 - 1273

Cordyceps sensu lato is a complex fungus‐larva symbiote, and its distribution is affected by the geography, climate, soil environment, and cohabitating microorganisms. However, despite the fact Cordyceps militaris and Ophiocordyceps highlandensis are different species, they coexist in the Pinus armandi forest of Dashao in Songming County, Yunnan, China. We explored the microbial compositions and soil...

article

Pull the plug: Anti‐angiogenesis potential of natural products in gastrointestinal cancer therapy

Yanling Ai, Ziyi Zhao, Hengyi Wang, Xiaomei Zhang, more

Phytotherapy Research > 36 > 9 > 3371 - 3393

Gastrointestinal cancer (GIC), including gastric cancer and colorectal cancer, is a common malignant tumor originating from the gastrointestinal epithelium. Although the pathogenesis of GIC has not been fully elucidated, angiogenesis is recognized as the key pathological basis for the growth, invasion and metastasis of cancer cells, and GIC angiogenesis is closely related to vascular endothelial growth...

article

Electronic and Optical Properties of the Type‐II GaN/SiH van der Waals Heterostructure: A First‐Principles Study

Lin Lv, Xin Ma, Wenbo Lou, Xiaomei Zhang, more

physica status solidi (b) > 259 > 7 > n/a - n/a

In recent years, constructing van der Waals (vdW) heterostructures based on different 2D materials has been a highly effective way to obtain desired electronic and optical properties. Herein, on the basis of first‐principles calculations, a 2D vdW heterostructure is constructed by vertically stacking the indirect‐bandgap gallium nitride (GaN) and silicane (SiH) monolayers. For the formed heterostructure,...

article

Sc(OTf)₃‐Catalyzed Dearomative [3+2] Annulation of 5‐Aminoisoxazoles with Quinone Imine Ketals or Quinone Monoacetals

Yingkun Yan, Min Li, Min Liu, Min Huang, more

European Journal of Organic Chemistry > 2022 > 18 > n/a - n/a

Isoxazolines are highly significant for the development of new synthetic methodology and pharmaceutics. Indolines and 2,3‐dihydrobenzofurans are also privileged structures in natural products and pharmaceuticals. In continuation of our ongoing research on transformations of 5‐aminoisoxazoles and quinone derivaties, herein we report Sc(OTf)₃‐catalyzed dearomative [3+2] annulations of 5‐aminoisoxazoles...

article

Could clinical nursing procedures lead to tracheal cuff pressure drop? A prospective observational study

Lijun Xiang, Meng Cao, Yuan Wang, Xuemei Song, more

Journal of Clinical Nursing > 31 > 5-6 > 623 - 632

Aim To evaluate the dynamic changes in tracheal cuff pressure before and after four clinical nursing procedures including sputum suction, oral care, atomisation inhalation, and turning over, and thus provide references for the adjustment time of cuff pressure in clinical practice. Background Cuff pressure must be kept within the range of 25–30 cmH₂O to ensure effective ventilation and prevent aspiration,...

article

The pharmacokinetic characteristics of sulfadiazine in channel catfish (Ictalurus punctatus) following oral and intravenous administrations

Ning Xu, Yu Fu, Xiaomei Zhang, Yongtao Liu, more

Journal of Veterinary Pharmacology and Therapeutics > 45 > 1 > 16 - 22

This study aimed to determine the bioavailability and pharmacokinetic parameters of sulfadiazine (SDZ) in channel catfish (Ictalurus punctatus) following oral gavage and intravenous injection. The healthy channel catfish were orally and intravenously administrated with SDZ solution at doses of 50 and 5 mg/kg, respectively. Plasma samples were determined by ultra‐performance liquid chromatography with...

article

P‐13.5: Study on Luminescence Mechanism of Blue Devices by Impedance spectroscopy and Transient electroluminescence

Shuyun Xu, Xiaobo Du, Yansong Li, Lihui Ma, more

SID Symposium Digest of Technical Papers > 52 > S2 > 1023 - 1025

The luminescence mechanism of blue devices is a Direct Chargerecombination mechanism, that is, the electrons is captured by the host and transferred to the dopant, and holes are directly captured by dopant, and the two directly recombine formed excitons on dopant.

article

Photodetectors: Cross‐Substitution Promoted Ultrawide Bandgap up to 4.5 eV in a 2D Semiconductor: Gallium Thiophosphate (Adv. Mater. 22/2021)

Yong Yan, Juehan Yang, Juan Du, Xiaomei Zhang, more

Advanced Materials > 33 > 22 > n/a - n/a

In article number 2008761, Congxin Xia, Zhongming Wei, and co‐workers describe substitution with lighter elements significantly increasing the bandgap of GaPS₄, and simultaneously inheriting its in‐plain anisotropy. GaPS₄ thus becomes a promising candidate material for solar‐blind ultraviolet and polarization‐sensitive photodetectors. The balance demonstrates the main idea of the cross‐substitution,...

article

Cross‐Substitution Promoted Ultrawide Bandgap up to 4.5 eV in a 2D Semiconductor: Gallium Thiophosphate

Yong Yan, Juehan Yang, Juan Du, Xiaomei Zhang, more

Advanced Materials > 33 > 22 > n/a - n/a

Exploring 2D ultrawide bandgap semiconductors (UWBSs) will be conductive to the development of next‐generation nanodevices, such as deep‐ultraviolet photodetectors, single‐photon emitters, and high‐power flexible electronic devices. However, a gap still remains between the theoretical prediction of novel 2D UWBSs and the experimental realization of the corresponding materials. The cross‐substitution...

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INFONA - science communication portal

Search results for: Xiaomei Zhang

Automated layer identification and segmentation of x‐ray computer tomography imaged PCBs

Machine learning decision support model for discharge planning in stroke patients

Dynamic changes in the gut microbiota after bismuth quadruple therapy and high‐dose dual therapy for Helicobacter pylori eradication

Enhanced synthesis of S‐adenosyl‐L‐methionine through combinatorial metabolic engineering and Bayesian optimization in Saccharomyces cerevisiae

Divergent Synthesis of Isoxazolo[5,4‐b]pyridines

Population genetic patterns across the native and invasive range of a widely distributed seagrass: Phylogeographic structure, invasive history and conservation implications

Manganese@Albumin Nanocomplex and Its Assembled Nanowire Activate TLR4‐Dependent Signaling Cascades of Macrophages

Enhanced L‐serine production by Corynebacterium glutamicum based on novel insights into L‐serine exporters

Antibody responses to SARS‐CoV‐2 Omicron infection in patients with hematological malignancies: A multicenter, prospective cohort study

Proteomics Landscape Mapping of Organ‐Resolved Behçet's Disease Using In‐Depth Plasma Proteomics for Identifying Hyaluronic Binding Protein 2 Expression Associated With Vascular Involvement

Seagrass restoration using seed ball burial in northern China

Microbial community composition and soil metabolism in the coexisting Cordyceps militaris and Ophiocordyceps highlandensis

Pull the plug: Anti‐angiogenesis potential of natural products in gastrointestinal cancer therapy

Electronic and Optical Properties of the Type‐II GaN/SiH van der Waals Heterostructure: A First‐Principles Study

Sc(OTf)₃‐Catalyzed Dearomative [3+2] Annulation of 5‐Aminoisoxazoles with Quinone Imine Ketals or Quinone Monoacetals

Could clinical nursing procedures lead to tracheal cuff pressure drop? A prospective observational study

The pharmacokinetic characteristics of sulfadiazine in channel catfish (Ictalurus punctatus) following oral and intravenous administrations

P‐13.5: Study on Luminescence Mechanism of Blue Devices by Impedance spectroscopy and Transient electroluminescence

Photodetectors: Cross‐Substitution Promoted Ultrawide Bandgap up to 4.5 eV in a 2D Semiconductor: Gallium Thiophosphate (Adv. Mater. 22/2021)

Cross‐Substitution Promoted Ultrawide Bandgap up to 4.5 eV in a 2D Semiconductor: Gallium Thiophosphate

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