Publications by authors named "Lihua Cai"

Highly stable and active catalysts are of significant importance and a longstanding challenge for a number of industrial chemical transformations. Here, motivated by the principle of the high entropy-stabilized structure, high-entropy alloy-loaded porous TiO as an efficient and sintering-resistant catalyst for the light-driven reverse water gas‒shift reaction without external heating is synthesized. The optimized CoNiCuPdRu/TiO catalyst exhibits a long-term stability of 1000 h (1.

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Article Synopsis
  • The surface chemistry of cerium oxide (CeO) is influenced by its specific crystal facets, which affect how metal species are supported and their catalytic effectiveness.
  • Different preparation methods for Pt/CeO catalysts lead to distinct types of platinum-oxygen (Pt-O) coordination based on which facets are predominantly exposed, such as {111} or {100}.
  • The study highlights that the method of preparation significantly impacts the catalytic properties, with photo-deposited Pt/CeO showing superior high-temperature stability and strong interactions compared to the traditional impregnation method.
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Visual object tracking, pivotal for applications like earth observation and environmental monitoring, encounters challenges under adverse conditions such as low light and complex backgrounds. Traditional tracking technologies often falter, especially when tracking dynamic objects like aircraft amidst rapid movements and environmental disturbances. This study introduces an innovative adaptive multimodal image object-tracking model that harnesses the capabilities of multispectral image sensors, combining infrared and visible light imagery to significantly enhance tracking accuracy and robustness.

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Catalyst deactivation by sintering and coking is a long-standing issue in metal-catalyzed harsh high-temperature hydrocarbon reactions. Ultrathin oxide coatings of metal nanocatalysts have recently appeared attractive to address this issue, while the porosity of the overlayer is difficult to control to preserve the accessibility of embedded metal nanoparticles, thus often leading to a large decrease in activity. Here, we report that a nanometer-thick alumina coating of MgAlO-supported metal catalysts followed by high-temperature reduction can transform a nonporous amorphous alumina overlayer into a porous MgAlO crystalline spinel structure with a pore size of 2-3 nm and weakened acidity.

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A fluorescent probe (L) of bis Schiff base secondary amine ligand was designed and synthesized from 2,6-pyridinedicarboxylic acid, ethylenediamine and salicylaldehyde by condensation and reduction reaction. Its structure was characterized by IR, UV-Vis, LIF, HNMR, C NMR, MS and elementary analysis. Investigation of binding test indicated that probe L could sensitively and selectively detect Cu ion with striking fluorescent signaling responses in anhydrous ethanol solvent.

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Background: Herbal medicine has a long history of use in the prevention and treatment of disease and is becoming increasingly popular globally. However, there are also widespread concerns about its safety. Among them, the cardiotoxicity of aconitine has been described.

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Regulation of the atom-atom interspaces of dual-atom catalysts is essential to optimize the dual-atom synergy to achieve high activity but remains challenging. Herein, we report an effective strategy to regulate the Pt -Ni interspace to achieve Pt Ni dimers and Pt +Ni heteronuclear dual-single-atom catalysts (HDSACs) by tailoring steric hindrance between metal precursors during synthesis. Spectroscopic characterization reveals obvious electron transfers in Pt Ni oxo dimers but not in Pt +Ni HDSAC.

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Background: Health interventions delivered via smart devices are increasingly being used to address mental health challenges associated with cancer treatment. Engagement with mobile interventions has been associated with treatment success; however, the relationship between mood and engagement among patients with cancer remains poorly understood. A reason for this is the lack of a data-driven process for analyzing mood and app engagement data for patients with cancer.

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Background: Social anxiety disorder is associated with distinct mobility patterns (e.g., increased time spent at home compared to non-anxious individuals), but we know little about if these patterns change following interventions.

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Objective: To investigate the implementation effects of new paths and methods of occupational ethics education for medical students in higher vocational colleges.

Methods: A total of 668 students in higher vocational colleges were selected as the study subjects, and divided into traditional group (n=349) and innovative group (n=319) in accordance with their grades. The data pertaining to the students' views on the educational model of medical and occupational ethics, occupational passion, spirit of occupational risk, occupational ethics and codes, and doctor-patient rights and obligations and communication abilities and skills in the two groups were compared, so as to explore the influences of new paths and methods of occupational ethics education on the occupational ethics of medical students in higher vocational colleges.

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Introduction: Acute kidney injury (AKI) is one of the most common organ dysfunction in sepsis, and increases the risk of unfavourable outcomes. Renal replacement therapy (RRT) is the predominant treatment for sepsis-associated AKI (SAKI). However, to date, no prospective randomised study has adequately addressed whether initiating RRT earlier will attenuate renal injury and improve the outcome of sepsis.

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Identifying biomarkers that are associated with different types of cancer is an important goal in the field of bioinformatics. Different researcher groups have analyzed the expression profiles of many genes and found some certain genetic patterns that can promote the improvement of targeted therapies, but the significance of some genes is still ambiguous. More reliable and effective biomarkers identification methods are then needed to detect candidate cancer-related genes.

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Information about critically ill patients with coronavirus disease 2019 (COVID-19) in China but outside of Wuhan is scarce. We aimed to describe the clinical features, treatment, and outcomes of patients with COVID-19 admitted to the intensive care unit (ICU) in Guangdong Province. In this multicenter, retrospective, observational study, we enrolled consecutive patients with COVID-19 who were admitted to seven ICUs in Guangdong Province.

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Background: Alstonia scholaris is a folk medicine used to treat cough, asthma and chronic obstructive pulmonary disease in China. Total alkaloids (TA) from A. scholaris exhibit anti-inflammatory properties in acute respiratory disease, which suggests their possible anti-inflammatory effect on influenza virus infection.

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As the water-gas shift (WGS) reaction serves as a crucial industrial process, strategies for developing robust WGS catalysts are highly desiderated. Here we report the construction of stabilized bulk-nano interfaces to fabricate highly efficient copper-ceria catalyst for the WGS reaction. With an in-situ structural transformation, small CeO nanoparticles (2-3 nm) are stabilized on bulk Cu to form abundant CeO-Cu interfaces, which maintain well-dispersed under reaction conditions.

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Background: Data are limited on the impact of neuraminidase inhibitor (NAI) treatment on avian influenza A(H7N9) virus RNA shedding.

Methods: In this multicenter, retrospective study, data were collected from adults hospitalized with A(H7N9) infection during 2013-2017 in China. We compared clinical features and A(H7N9) shedding among patients with different NAI doses and combination therapies and evaluated factors associated with A(H7N9) shedding, using Cox proportional hazards regression.

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The dysbiosis of human microbiome has been proven to be associated with the development of many human diseases. Metagenome sequencing emerges as a powerful tool to investigate the effects of microbiome on diseases. Identification of human gut microbiome markers associated with abnormal phenotypes may facilitate feature selection for multiclass classification.

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Type 2 diabetes, which is a complex metabolic disease influenced by genetic and environment, has become a worldwide problem. Previous published results focused on genetic components through genome-wide association studies that just interpret this disease to some extent. Recently, two research groups published metagenome-wide association studies (MGWAS) result that found meta-biomarkers related with type 2 diabetes.

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This retrospective analysis was set to understand the epidemiological status of the critically ill obstetric patients in Dongguan city, Guangdong, China. Understanding the risk factors for the death cases can provide scientific evidences for future preventive strategies to decrease the maternal mortality rate. This retrospective included the statistical data and clinical data on the cases of critically ill and dead obstetric patients admitted to Dongguan People's Hospital and Dongguan Maternal & Child Health Hospital from September 1st, 2009 to August 31st, 2013.

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Aims: This study was aimed to exploit the role of heme oxygenase Hmx1 and the potential miRNA mechanisms in the kidney injuries induced by urinary tract infection by Candida species/Candidemia.

Main Methods: We employed a mouse model of systemic Candidiasis by injection of the Candida albicans strain SC5314 into C57BL/6 mice. Kidney injuries were assessed by measuring serum cystatin C (CysC), serum β2-microglobulin (β2-MG) and blood urea nitrogen (BUN).

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Palladium (4a–4c), iridium (5a–5c) and ruthenium (6a–6c) complexes have been prepared by in situ transmetalation from the corresponding silver complexes of acyclic imino-functionalized imidazolium chlorides [1-(Me)-imidazolium-3-{C(p-CH(3)-Ph)=N(Ar)}]Cl (3) (Ar = 2,4,6-trimethylphenyl (3a), 2,6-diisopropylphenyl (3b) and phenyl (3c)) with [Pd(COD)Cl(2)], [Cp*IrCl(2)](2) or [Ru(p-cymene)Cl(2)](2), respectively. Iridium and ruthenium complexes, 5a[PF(6)]–5c[PF(6)], 6a[PF(6)]–6c[PF(6)], 6c[BF(4)], 6c[BPh(4)] and 6c[NTf(2)], were obtained directly from 5a–5c and 6a–6c through an anion-exchange process with KPF(6), NaBF(4), NaBPh(4) and LiNTf(2) (bis(trifluoromethylsulfonyl)imide lithium), respectively. All complexes were characterized by FT-IR, (1)H and (13)C NMR spectroscopy and elemental analysis.

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An efficient arylation of electron-poor arenes has been developed without the addition of external ligands or in the presence of a catalytic monoprotected amino acid which assisted the reaction to proceed under mild conditions. The meta-selectivity was observed under both conditions.

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