Due to the low viscosity of water, water-lubricated bearings are susceptible significant wear and noise in demanding operating conditions. It has been demonstrated that a small quantity secondary lubricating medium can improve lubrication performance contact surfaces achieve purpose temporary risk aversion. As further step, feasibility proposed idea is experimentally validated on bearing test bench. A numerical model couples N–S equation VOF then developed investigate behavior flow field...

On-chip inductance extraction and analysis is becoming increasing critical. Inductance can be difficult, cumbersome impractical on large designs as depends the current return path-which typically unknown prior to extracting simulating circuit model. In this paper we propose a new element, K, model effects, at same time being easier extract analyze. K defined inverse of partial matrix L, has locality sparsity normally associated with capacitance matrix. We capture effects by directly instead...

Adriamycin (ADR) is an important chemotherapeutic agent frequently used in treatment of breast cancer. However, resistance to ADR results failure many patients. Recent studies have indicated that microRNAs (miRNAs) may play role such drug-resistance. In the present study, microRNA-452 (miR-452) was found be significantly down-regulated adriamycin-resistant MCF-7 cells (MCF-7/ADR) compared with parental by miRNA microarray and real-time quantitative PCR (RT-qPCR). MiR-452 mimics inhibitors...

Coronary microvascular dysfunction (CMD) after percutaneous coronary intervention (PCI) is a critical prognostic factor in acute syndrome (ACS). This study aimed to evaluate the combined predictive value of triglyceride-glucose index (TyG) and non-HDL-C/HDL-C ratio (NHHR) for CMD ACS patients post-PCI. A retrospective analysis 542 undergoing PCI (2021-2023) was conducted. Patients were classified into (n=273) non-CMD (n=269) groups based on presence Baseline characteristics biochemical...

Mummy berry is a serious disease that may result in up to 70 percent of yield loss for lowbush blueberries. Practical mummy detection, stage classification and severity estimation remain great challenges computer vision-based approaches because images taken blueberry fields are usually mixture different plant parts (leaves, bud, flowers fruits) with very complex background. Specifically, typical problems hindering this effort included data scarcity due high manual labelling cost, tiny low...

Taxis play a crucial role in urban public transportation, but the traffic safety situation of taxi drivers is far from optimistic, especially considering introduction ride-hailing services into industry. This study conducted comparative analysis risk factors crashes between traditional and China, including their demographic characteristics, working conditions, risky driving behaviors. The data was collected 2,039 2,182 via self-reported questionnaires. Four XGBoost models were established,...

MicroRNA-452 (miRNA-452) was overexpressed in docetaxel-resistant human breast cancer MCF-7 cells (MCF-7/DOC). However, its role modulating the sensitivity of to docetaxel (DOC) remains unclear. The aim this study is investigate miRNA-452 DOC.Real-time quantitative PCR (RT-qPCR) were used identify differential expression between MCF-7/DOC and cells. MiRNA-452 mimic transfected into inhibitor these evaluated using RT-qPCR, MTT assay, flow cytometry assay. relationship predictive target gene...

Xiasai is the largest magmatic-hydrothermal Ag–Pb–Zn–Sn deposit in central Yidun Terrane (SW China). Two generations of pyrite are associated with Ag–Pb–Zn mineralization. The coarse-grained (PyI) occurs together arsenopyrite and pyrrhotite, fine-grained (PyII) sphalerite chalcopyrite. This study documents LA-ICPMS mapping, trace element LA-MC-ICPMS sulfur isotopic analyses two types to further constrain formation veins. Micro-textures reveal that pyrrhotite have a homogeneous distribution...

Tin and (Ag)–Pb–Zn mineralisation generally co-exist in SEDEX, porphyry, skarn, greisen, as well magmatic-hydrothermal Sn and/or Pb–Zn polymetallic deposits. The genetic relationship between these two styles of mineralization, however, is not defined. More than 20 skarn hydrothermal-vein-type Ag–Pb–Zn–Sn deposits can be found the central Yidun Terrane (YDT) southwestern China. Amongst large Xiasai deposit, which contains 1028 t Ag @ 337.8 g/t, 0.27 Mt Pb + Zn 8.33 %, 20,000 0.75 %. deposit...

In this paper, we present a Rank Revealing Randomized Singular Value Decomposition (R3SVD) algorithm to incrementally construct low-rank approximation of potentially large matrix while adaptively estimating the appropriate rank that can capture most actions matrix. Starting from with an initial guessed rank, R3SVD adopts orthogonal Gaussian sampling approach obtain dominant subspace within leftover space, which is used add up existing approximation. Orthogonal repeated until satisfactory...

Abstract Objectives. To evaluate and compare the diagnostic accuracy of semi‐quantitative quantitative real‐time myocardial contrast echocardiography (RT‐MCE) with low‐dose dobutamine stress (LD‐DSE) in detecting viable myocardium. Methods. Thirty in‐patients coronary artery disease regional wall motion abnormalities underwent RT‐MCE without LD‐DSE. Percutaneous intervention was performed within 1 week after all patients. Myocardial perfusion evaluated from A, β, A × β indices microbubble...

Serum amyloid A (SAA) is a cardiovascular risk factor and may serve as predictor of infarct-related artery (IRA) patency in patients with ST-segment elevation myocardial infarction (STEMI). We measured SAA levels STEMI who underwent percutaneous coronary intervention (PCI) investigated their association IRA patency. According to the Thrombolysis Myocardial Infarction (TIMI) flow grade, 363 undergoing PCI our hospital were divided into an occlusion group (TIMI 0-2) 3). The level before was...

The rapid growth of e-commerce has heightened the importance for express delivery companies to ensure timely deliveries. Consequently, it is essential explore ways deliver more packages customers while simultaneously reducing costs through adoption a joint distribution mode. This study presents two-level location selection model within mode, considering factors such as station capacity and number transport vehicles, with objective minimizing total cost associated selecting locations....

Taking the Giant Panda National Park as an example, this paper uses factor analysis to measure residents’ financial awareness and mediating effect models investigate influence paths of community governance, awareness, willingness participate in construction development national parks. Finally, it suggests potential solutions for park biodiversity conservation. The results indicated that governance levels had a positive on participate, satisfaction with played significant partially role their...

The aim of this study was to evaluate the value real-time myocardial contrast echocardiography (RT-MCE) for detecting coronary microcirculation (CM) function in artery disease (CAD) patients.Sixty-five consecutive patients were divided into CAD (n=52) and no-CAD (n=13) groups using angiography (CAG). All underwent RT-MCE at rest CAG within 1 week after RT-MCE. ventricular segments semi-quantitatively ischemic non-ischemic based on images. Myocardial blood volume (A), flow velocity (ß), mean...

The distribution of emergency perishable materials after a disaster, such as an earthquake, is essential part resource dispatching. However, the traditional single-period model can hardly solve this problem because incomplete demand information for in affected sites. Therefore, problems we firstly construct multi-period vehicle path optimization with dual objectives minimizing cost penalty delay and total corruption during delivery, amount that not met, by applying interval boundary most...

Four new polyprenylated acylphloroglucinol derivatives, hyperwilone A-D ( 1–4 ), and two xanthones, wilsonxanthone A 5 ) B 6 together with eight known compounds were isolated from the aerial parts of Hypericum wilsonii . Their structures expounded by comprehensive analysis 1D 2D NMR spectra HRESIMS. The relative configurations absolute 1-6 determined calculations comparing their experimental computed ECD data. All evaluated for GLUT4 translocation effects in L6 myotubes. Compound showed...

The COVID-19 virus has challenged the development of cultural industries seriously, so far, however few studies have used empirical methods to analyze impact pandemic on overall industries. Based panel data listed companies, this paper explores from perspective stock market returns. results show that a significant negative returns industries, but degrees various creative sub-sectors are significantly different. findings also indicate digitalization can effectively reduce and epidemic bigger...

Mesoscale eddies are broadly distributed over the global ocean and play a significant role in modulating spatiotemporal evolution of mixed layer depth (MLD). The presence abnormal has been shown; however, precise quantification effect on MLD, given case eddies, not carried out thus far. Differently from previous approach to identify through sea surface temperature, we therefore, proposed method using potential density based Argo data (Array for Real-time Geostrophic Oceanography) 15 years...