Publications by authors named "Yan L"

Article Synopsis
  • A coverage prediction model helps network operators identify coverage gaps, optimize base station placements, assess service quality, and create radio maps for various network management tasks.
  • The proposed DNN-SS model utilizes a combination of deep neural networks and semantic segmentation of satellite images, enabling it to predict coverage without relying on complex parameters like base station height and transmission power.
  • Experimental results demonstrate that DNN-SS outperforms traditional models in random location predictions by improving accuracy metrics such as RMSE and MAE while simplifying the prediction process for large-scale applications.
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The present study utilizes the significant differences in θ, α, and β band power spectra observed in electroencephalograms (EEGs) during distracted versus focused driving. Three subtasks, visual distraction, auditory distraction, and cognitive distraction, were designed to appear randomly during driving simulations. The θ, α, and β band power spectra of the EEG signals of the four driving attention states were extracted, and SVM, EEGNet, and GRU-EEGNet models were employed for the detection of the driving attention states, respectively.

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Modern information theory pioneered by Shannon provides the mathematical foundation of information transmission and compression. However, the physical (and especially the energetic) nature of the information has been elusive. While the processing of information incurs inevitable energy dissipation, it is possible for communication systems to harness information to perform useful work.

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  • Mastitis (MAS), endometritis (MET), and ketosis (KET) are common diseases in dairy cows that lead to significant economic losses in the dairy industry, with prevalence rates of 20.04%, 10.68%, and 7.33%, respectively.
  • These diseases negatively affect milk production and quality, causing reductions in 305-day Milk Yield, Protein Yield, and Fat Yield, with MAS and MET leading to estimated losses of up to 372 kg in milk yield per cow.
  • The study also found that all three diseases increase important reproductive measures, such as the interval from calving to first service and the overall calving interval, although the herit
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The kidney performs fundamental functions by eliminating metabolic waste and reabsorbing essential nutrients and electrolytes such as glucose, proteins, ions, and anions [...

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Objective: To investigate the value of magnetic resonance examination technique for prenatal genetic diagnosis and clinical intrauterine treatment of fetal congenital cystic adenoma (CCAM) of the lung.

Methods: A retrospective analysis was conducted on 108 pregnant women admitted to a certain hospital from January 2016 to January 2022 for pre natal examination and consultation on eugenics. The selected pregnant women were aged 20-40 and had a gestational age of 17-36 weeks.

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Objective: The study aimed to investigate the impact of rare earth elements (REEs) exposure on pregnancy outcomes of fertilization-embryo transfer (IVF-ET) by analyzing samples from spouses.

Methods: A total of 141 couples were included. Blood and follicular fluid from the wives and semen plasma from the husbands, were analyzed for REEs using inductively coupled plasma mass spectrometry (ICP-MS).

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Natural gas, primarily composed of methane (CH), represent an excellent choice for a potentially sustainable renewable energy transition. However, the process of compressing and liquefying CH for transport and storage typically results in significant energy losses. In addition, in order to optimize its efficacy as a fuel, the CH content of natural gas needs to be increased to a level of at least 97 % to ensure its quality and efficiency in various applications.

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Background: We aim to investigate the characteristics of invasive pulmonary aspergillosis (IPA) in patients with HBV-related acute on chronic liver failure (HBV-ACLF).

Methods: A total of 44 patients with probable IPA were selected as the case group, and another 88 patients without lung infections were chosen as the control group.

Results: HBV-ACLF patients with probable IPA had more significant 90-day mortality (38.

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Duck-derived lactic acid bacteria (DDL) are a crucial beneficial bacterium in the intestines, contributing significantly to the health of ducks. However, the mechanism by which these DDL improves the growth performance and meat quality of Muscovy duck is not clear. In this study, A total of 800 male Muscovy ducks, initially weighing 50.

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Background: Periventricular-intraventricular hemorrhage can lead to posthemorrhagic ventricular dilatation or even posthemorrhagic hydrocephalus if not detected promptly. Sequential cranial ultrasound scans are typically used for their diagnoses. Nonetheless, manual image audit has numerous disadvantages.

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Article Synopsis
  • * The review focuses on understanding the mechanisms of these materials through computer simulations and theoretical analysis, aiming to guide the design of effective and safe antibacterial products.
  • * By summarizing recent advancements and promoting the use of simulations, this review encourages further research and innovative applications of antibacterial materials in biomedicine and environmental management.
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Actinic keratoses (AKs) and keratinocyte carcinomas (KCs) arise from prolonged UV exposure, with precursor UV-induced clonal mutations (CMs) appearing in sun-damaged skin. Photodynamic therapy (PDT) is a common field treatment for AKs and early KCs, but its impact on subclinical CMs is unknown. This study examines CMs using targeted ultra-deep sequencing on epidermal samples.

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Article Synopsis
  • The study aimed to compare the effectiveness of stereotactic soft-channel and hard-channel aspiration methods in treating primary brainstem hemorrhage in 146 patients.
  • Results showed that patients treated with hard-channel aspiration had a significantly lower mortality rate (14.8%) compared to those treated with soft-channel aspiration (41.5%) after 30 days.
  • The hard-channel group also demonstrated better treatment outcomes at 90 days post-operation, indicating it as a safer and more effective method for addressing primary brainstem hemorrhage.
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Objectives: To evaluate the effectiveness of a large-scale, web-based, in-service hypertension management training project among lay health workers (LHWs) at primary care health (PHC) settings in China, and to examine the factors contributing to the variations of effectiveness.

Methods: We used data from a web-based national hypertension management training project implemented in 2018, it was designed to facilitate LHWs to learn, understand, and apply the relevant knowledge and skills in hypertension management through providing training courses by use of the web-based platform with unified standards. All LHWs were required to participate in the exams before and after training to acquire scores for the use of evaluating their performance of hypertension management knowledge.

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Humans can quickly estimate the quantity of objects in their environment through the Approximate Number System (ANS). However, the developmental trajectories of numerical and spatial perception in school-aged children are not well understood. This study aimed to address this issue by examining the performance of 7-year-olds, 9-year-olds, and 11-year-olds in the dot-number and dot-area tasks.

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Objective: The study aimed to investigate the correlation and consistency between resting full-cycle ratio (RFR) and fractional flow reserve (FFR) in functional assessment of coronary arteries in a Chinese real-world cohort with non-ST-segment elevation acute coronary syndrome (NSTE-ACS).

Design: Retrospective study.

Setting: A single-centre study in China.

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This study aims to enhance the precision of implant cavity preparation, addressing a notable challenge in the current state of the field by utilizing femtosecond lasers. The application of femtosecond lasers in implant cavity preparation heralds a noninvasive and efficient technique, characterized by diminished thermal damage and high biocompatibility. Despite these promising attributes, the realization of precise cavity preparation remains a significant challenge in the contemporary domain.

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Article Synopsis
  • The study examines how education impacts the prevalence of cardiovascular-kidney-metabolic (CKM) syndrome in middle-aged and older Chinese individuals, highlighting significant gender differences.
  • Using data from a large population-based study, researchers found that low educational attainment increased the likelihood of moderate and high CKM syndrome, particularly among women.
  • Results suggest that poor health behaviors, influenced by education, significantly affect CKM syndrome risks, emphasizing the need for interventions that address social determinants of health.
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Spondyloarthritis (SpA) is a prevalent genetic disorder that significantly impairs mobility, particularly in the spine, sacroiliac, and peripheral joints. Recent evidence highlights early involvement of the sternoclavicular joint in SpA, which may serve as an initial indicator. Diagnosis often relies on CT and MRI, neglecting ultrasound's potential in identifying SpA-related sternoclavicular arthritis.

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α-Amino-CF compounds are widely employed in bio- and pharmaceutical chemistry for improved stability and bioactivities. Traditional methods often face challenges with functional group tolerance and lack a general approach for late-stage functionalization. Herein, we report a new type of redox-active α-amino-CF reagents, easily prepared from trifluoro acetaldehyde hydrates.

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Background And Aims: Limited data have been reported on achieving functional cure using pegylated interferon (Peg-IFN) alpha-2b treatment for postpartum hepatitis B e antigen (HBeAg)-negative women with chronic hepatitis B virus (HBV) infection. This study was to assess the effectiveness and safety of Peg-IFN alpha-2b in HBV postpartum women without HBeAg and identify factors linked to the functional cure.

Methods: A total of 150 HBeAg-negative postpartum women were retrospectively recruited.

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Background: Pathological axillary lymph node (pALN) burden is an important factor for treatment decision-making in clinical T1-T2 (cT1-T2) stage breast cancer. Preoperative assessment of the pALN burden and prognosis aids in the individualized selection of therapeutic approaches.

Purpose: To develop and validate a machine learning (ML) model based on clinicopathological and MRI characteristics for assessing pALN burden and survival in patients with cT1-T2 stage breast cancer.

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Background: Chronic cough in children is closely related to gastroesophageal reflux (GER). However, this association has not been adequately studied due to a lack of diagnostic tools. Combined esophageal multichannel intraluminal impedance and pH (MII-pH) monitoring is considered the most accurate method for evaluating the association between symptoms and reflux, but data on its use in children with chronic cough are still lacking.

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