123 results match your criteria: "Tsinghua University Beijing China.[Affiliation]"

Disentangling the assembly mechanisms controlling community composition, structure, distribution, functions, and dynamics is a central issue in ecology. Although various approaches have been proposed to examine community assembly mechanisms, quantitative characterization is challenging, particularly in microbial ecology. Here, we present a novel approach for quantitatively delineating community assembly mechanisms by combining the consumer-resource model with a neutral model in stochastic differential equations.

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As the largest organ of the body, the skin acts as a barrier to prevent diseases and harbors a variety of beneficial bacteria. Furthermore, the skin bacterial microbiota plays a vital role in health and disease. Disruption of the barrier or an imbalance between symbionts and pathogens can lead to skin disorders or even systemic diseases.

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Article Synopsis
  • Alzheimer's disease (AD) is a neurodegenerative disorder that leads to worsening memory and cognitive functions, diagnosed mainly through cerebrospinal fluid (CSF) markers, despite the pain and costs involved for patients.
  • A study involving 82 participants with varying levels of cognitive impairment seeks to find correlations between brain atrophy from MRI scans, abnormal EEG patterns, and amyloid β-protein (Aβ) levels.
  • The results show that low Aβ1-42/Aβ-40 levels are linked to significant brain atrophy and unusual EEG characteristics, along with a successful predictive model using a random forest algorithm, achieving 91.6% accuracy in estimating Aβ levels, offering a more affordable method for early AD detection.
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Transition metal oxides based anodes are facing crucial problems of capacity fading at long cycles and high rates due to electrode degradations. In this prospective, an effective strategy is employed to develop advanced electrode materials for lithium-ion batteries (LIBs). In the present work, a mesoporous CoO@CdS hybrid sructure is developed and investigated as anode for LiBs.

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Background: Atrial fibrillation (AF) increases risk of embolic stroke, and in postoperative patients, increases cost of care. Consequently, ECG screening for AF in high-risk patients is important but labor-intensive. Artificial intelligence (AI) may reduce AF detection workload, but AI development presents challenges.

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The rapid advancement of tumor immunotherapies poses challenges for the tools used in cancer immunology research, highlighting the need for highly effective biomarkers and reproducible experimental models. Current immunotherapy biomarkers encompass surface protein markers such as PD-L1, genetic features such as microsatellite instability, tumor-infiltrating lymphocytes, and biomarkers in liquid biopsy such as circulating tumor DNAs. Experimental models, ranging from 3D in vitro cultures (spheroids, submerged models, air-liquid interface models, organ-on-a-chips) to advanced 3D bioprinting techniques, have emerged as valuable platforms for cancer immunology investigations and immunotherapy biomarker research.

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Introduction: We explored the longitudinal relationship between retinal vascular features and dementia incidence over 10 years.

Methods: Among 584 participants from the Three-City-Alienor (3C-Alienor) population-based cohort, quantitative retinal vascular features (caliber, tortuosity, fractal dimension) were measured using semi-automated software. Dementia was actively diagnosed over the follow-up period.

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The public-private partnerships in healthcare sector in China.

Chronic Dis Transl Med

December 2023

Department of Hepatobiliary Surgery, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Institute of Precision Medicine, Institute of Intelligent Medicine Tsinghua University Beijing China.

This manuscript is a narrative review on experience in the healthcare public-private partnerships (PPP) field project in China. The PPP model allows healthcare officials to share the risk of building new facilities with the private sector. The objective of this study is to evaluate and to review the PPP of healthcare sector in China, and to investigate the critical success factors and best practice of PPP.

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Osteoporosis is a common disease that has a significant impact on patients, healthcare systems, and society. World Health Organization (WHO) diagnostic criteria for postmenopausal women were established in 1994 to diagnose low bone mass (osteopenia) and osteoporosis using dual-energy X-ray absorptiometry (DXA)-measured bone mineral density (BMD) to help understand the epidemiology of osteoporosis, and identify those at risk for fracture. These criteria may also apply to men ≥50 years, perimenopausal women, and people of different ethnicity.

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AI has been widely applied in scientific scenarios, such as robots performing chemical synthetic actions to free researchers from monotonous experimental procedures. However, there exists a gap between human-readable natural language descriptions and machine-executable instructions, of which the former are typically in numerous chemical articles, and the latter are currently compiled manually by experts. We apply the latest technology of pre-trained models and achieve automatic transcription between descriptions and instructions.

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Low-flow removal of refractory ascites is critical to treating cirrhosis and digestive system tumor, and thus, commercial ascites pump emerged lately. The rigid structure of clinically available pumps rises complication rate and lack of flow rate monitoring hinders early warning of abnormalities. Herein, a soft artificial system was proposed inspired by lymph for interactive ascites transfer with great biocompatibility.

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AT-HOOK MOTIF NUCLEAR LOCALIZED (AHL) proteins occur in all sequenced plant species. They bind to the AT-rich DNA sequences in chromosomes and regulate gene transcription related to diverse biological processes. However, the molecular mechanism underlying how AHL proteins regulate gene transcription is poorly understood.

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At the ultrathin scale, nanomaterials exhibit interesting chemical and physical properties, like flexibility, and polymer-like rheology. However, to limit the dimensions of composite nanomaterials at the ultrathin level is still a challenging task. Herein, by adopting a new low temperature single step and single pot wet chemical approach, we have successfully fabricated two dimensional (2D) mixed oxide ZnO-FeO dendritic nanosheets (FZDNSs).

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The ongoing COVID-19 pandemic has posed new and has aggravated already existing public health challenges in Malawi and worldwide. Having a better understanding of these challenges can help facilitate the identification of solutions and designing further public health interventions and policies for effective management of the COVID-19 pandemic. This article presents an overview of the situation of COVID-19 in Malawi and identifies emerging public health challenges that the country is facing amidst this pandemic.

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Two novel bistriazolyl-phenanthroline (BTrzPhen) ligands, bearing benzene-sulphonate (DS-BTrzPhen) and amino-acidic (DAA-BTrzPhen) hydrophilizing moieties were developed and found to be more soluble in aqueous acidic media with improved selectivity for Am(iii) over Eu(iii) in solvent extraction studies having SF values reaching >300. The remarkable activities of both ligands suggest that BTrzPhen ligands are generally still worth exploring and improving.

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Geographic Variation in Mortality of Acute Myocardial Infarction and Association With Health Care Accessibility in Beijing, 2007 to 2018.

J Am Heart Assoc

June 2023

Center for Clinical and Epidemiologic Research Beijing An Zhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, National Clinical Research Center of Cardiovascular Diseases, Beijing Municipal Key Laboratory of Clinical Epidemiology Beijing China.

Article Synopsis
  • This study examines acute myocardial infarction (AMI) mortality trends from 2007 to 2018 in Beijing, analyzing 94,106 deaths across 307 townships.
  • It finds that while overall AMI mortality has decreased, geographic disparities have grown, with areas experiencing greater health care access seeing a more significant decline in mortality rates.
  • The research suggests that improving health care accessibility in high-mortality areas may effectively reduce AMI-related deaths and address geographic inequalities in health outcomes.
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The unbalanced allocation of healthcare resources is a major challenge that hinders access to healthcare. Taking Shenzhen as an example, this study aimed to enhance equity in obtaining healthcare services, through measuring and visualizing the spatial accessibility of community healthcare centers (CHC), and optimizing CHC geospatial allocation. We used the number of health technicians per 10,000 to represent the CHC's service capacity, combined with resident points and census data to calculate the population the CHC needs to carry, and then analyzed the accessibility based on the Gaussian two-step floating catchment area method.

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Since the identification of the first case of pneumonia of unknown cause in 2019, the COVID-19 pandemic has spread the globe for over 3 years. As the most populous country in the world, China's disease prevention policies and response plans concern the health of the country's 1.4 billion people and beyond.

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Background Pulmonary arterial hypertension (PAH) is a complex, fatal disease where disease severity has been associated with the single nucleotide polymorphism (SNP) rs2856830, located near the human leukocyte antigen DPA1 (HLA-DPA1) gene. We aimed to define the genetic architecture of functional variants associated with PAH disease severity by identifying allele-specific binding transcription factors and downstream targets that control endothelial pathophenotypes and PAH. Methods and Results Electrophoretic mobility shift assays of oligonucleotides containing SNP rs2856830 and 8 SNPs in linkage disequilibrium revealed functional SNPs via allele-imbalanced binding to human pulmonary arterial endothelial cell nuclear proteins.

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The bioeconomy drives the development of life science and biotechnology as a blueprint for the future development of human society, and offers a cross-cutting perspective on the societal transformation towards long-term sustainability and the transition away from the non-renewable economy. Moreover, the sustainable bioeconomy strategies are consistent with the United Nation's (UN) Sustainable Development Goals (SDG) and are becoming the centre of the achievement for SDG. The Chinese '14th Five-Year Plan for Bioeconomy Development' (2021-2025), including the development goals of China's bioeconomy containing biomedicine, agriculture, bio-manufacturing and bio-security as a strategic priority, is discussed.

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Background: Uneven economic development has led to substantial health inequalities between Chinese provinces. The extent of, and factors underlying, between-province health inequalities have received little attention.

Methods: Data from 15,278 respondents in Wave 2 (2013) of the China Health and Retirement Longitudinal Study (CHARLS) were used to investigate inequalities among people aged ≥50 years in five health outcomes between 27 Chinese province-level administrative units.

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Recent progress of theoretical studies on electro- and photo-chemical conversion of CO with single-atom catalysts.

RSC Adv

February 2023

School of Physics and Telecommunication Engineering, School of Materials Science and Engineering, Shaanxi Laboratory of Catalysis, Shaanxi University of Technology Hanzhong 723001 China

The CO reduction reaction (CORR) into chemical products is a promising and efficient way to combat the global warming issue and greenhouse effect. The viability of the CORR critically rests with finding highly active and selective catalysts that can accomplish the desired chemical transformation. Single-atom catalysts (SACs) are ideal in fulfilling this goal due to the well-defined active sites and support-tunable electronic structure, and exhibit enhanced activity and high selectivity for the CORR.

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Cryo-EM structure of orphan G protein-coupled receptor GPR21.

MedComm (2020)

February 2023

Kobilka Institute of Innovative Drug Discovery, Shenzhen Key Laboratory of Steroid Drug, Discovery and Development, School of Medicine the Chinese University of Hong Kong Shenzhen Guangdong China.

GPR21 belongs to class A orphan G protein-coupled receptor (GPCR). The endogenous ligands for human GPR21 remain unidentified. GPR21 expression is associated with developing type 2 diabetes (T2DM), a multifactorial metabolic disease caused by pancreatic β-cell dysfunction, decreasing insulin production, insulin resistance, and obesity.

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Colloidal contaminants and pathogens are widely distributed in soil, whose tiny sizes and distinct surface properties render unique environmental behaviours. Because of aging, colloids can undergo dramatic changes in their physicochemical properties once in the soil environment, thus leading to diverse or even unpredictable environmental behaviour and fate. Herein, we provide a state-of-art review of colloid aging mechanisms and characteristics and implications for risk mitigation.

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