The cast-rolling composite method was used to create a Cu/Al layered composites with thickness of 5 mm. organizational structure, and strain distribution the composites, were characterized using SEM, TEM, EBSD. mechanical characteristics determined, evolution pattern interface under different strains observed, microstructures tensile deformation behaviors test material analyzed. results show that microstructure showed multilevel at interface, an Al2Cu + Al4Cu9 intermetallic compounds (IMCs)...

This study is to investigate the effects of slow breathing on heart rate variability (HRV) and arterial baroreflex sensitivity in essential hypertension. We studied 60 patients with hypertension healthy controls. All subjects underwent controlled at 8 16 breaths per minute. Electrocardiogram, respiratory, blood pressure signals were recorded simultaneously. rate, respiratory peak, high-frequency (HF) power, low-frequency (LF) LF/HF ratio HRV traditional corrected spectral analysis. Besides,...

Abstract Background Myocarditis is a global epidemic that causes various medical conditions associated with an increased incidence and death numbers. This study aimed to investigate the trends in myocarditis-associated incidence, mortality, disability-adjusted life-years (DALYs) health inequalities, risk factors, predict disease burden, thereby mitigating hazards of myocarditis. Methods was modelling used data from Global Burden Diseases 2021, which myocarditis included analysis. Incidence,...

The phase structure in the interface zone of Cu–Al composite plate was studied by EBSD after casting and rolling different heat treatment temperatures. grain sizes matrix intermetallic compounds were analyzed statistically. spatial distribution characteristics transverse, rolled, normal various phases characterized inverse pole diagram. results show that with increase temperature, interfacial area is rearranged, residual stress can be released, zero resolution decreases. cast-rolled composed...

Large scale Atomic/Molecular dynamic Parallel Simulator (LAMMPS) molecular dynamics simulation software was used to simulate the copper and aluminum atom diffusion changes of interface during heating cooling process composite panels. The structures were characterized through scanning electron microscope (SEM), X-ray diffraction (XRD), transmission (TEM), mechanical properties also tested. results show that rate is higher than atom, CuAl2 radial distribution function at 300 K consistent with...

To study the micromorphology and dynamic evolution law of copper aluminum composite interface evolution, ultra-high temperature laser Confocal microscopy (CLSM) was used to observe analyze in situ, then SEM, EDS other advanced material analysis methods were layer, composition layer formation process interface. The results indicate that is mainly related mutual diffusion atoms reaction between aluminum. bonding melting metal surface atoms, which main mechanism bonding. intermetallic compound...

Thiosulfate is an inorganic ligand that forms a soluble light-sensitive cadmium thiosulfate complex, and sulfide (CdS) with “size effect” can be produced via ultraviolet (UV) irradiation. This study investigated the activity of CdS nanoparticles (NPs) precipitated from complex UV irradiation on photocatalytic dye degeneration. Scanning electron microscopy (SEM) transmission (TEM) demonstrated decomposition products were spherical NPs. The NPs was evaluated based degradation rates methylene...

To investigate the clinical efficacy of axillary approach in surgical treatment Ideberg type I and II scapular glenoid fractures.Retrospective analysis 13 cases fracture treated affiliated Hospital Jining Medical College, Jiaxiang County People hospital, Zoucheng City people Hospital, Yanzhou District Juancheng from December 2020 to January 2022. Eight males (including 1 bilateral) 5 females, with an average age 57.5 years (range 33 75 years). According classification, there were 10 a, case...

This case report describes a patient in their 50s who presented with squeezing chest pain for 4 hours and an initial electrocardiogram showing acute inferior wall right ventricular infarction third-degree atrioventricular block.

The Brugada syndrome is a genetic disease (mutation of the SCN5A gene) that predisposes to syncope and life‐threatening sudden cardiac death. case highlights importance recognizing hyperkalemia, as potential triggers acquired sign with electrical alternans.

The objective of our study was to assess diagnostic value three-dimensional (3D) vectorcardiographic (VCG) parameters in detecting pulmonary arterial hypertension (PAH) chronic obstructive lung disease (COLD) with and without right ventricular hypertrophy (RVH).The group 62 patients COPD stratified on the basis color Doppler echocardiographic findings into three subgroups: non-PAH (n = 23), PAH RVH 22), 17). Pairwise differences between subgroups were evaluated by one-way analysis variance,...

The micro waveform of His bundle potential can’t be recorded beat-to-beat on surface electrocardiogram yet. We have found that the micro-wavelets before QRS complex may related to atrioventricular conduction system potentials. This study is explore possibility can noninvasively electrocardiogram. randomized 65 patients undergoing radiofrequency catheter ablation paroxysmal superventricular tachycardia (exclude overt Wolff-Parkinson-White syndrome) receive “conventional electrocardiogram” and...

Recent research revealed methionine metabolism as a key mediator of tumor initiation and immune evasion. However, the relationship between microenvironment (TME) in lung adenocarcinoma (LUAD) remains unknown. Here, we comprehensively analyzed genomic alterations, expression patterns, prognostic values 68 methionine-related regulators (MRGs) LUAD. We found that most MRGs were highly based on 30 datasets including 5024 LUAD patients. Three distinct MRG modification patterns identified, which...

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A 54-year-old man with a 20-year history of recurrent paroxysmal tachycardia was admitted to hospital because chest pain. The electrocardiogram (ECG) on admission ([Figure 1A][1]) showed signs suggestive an anteroseptal accessory pathway, as well ST segment elevation in leads V1 through V4

This paper uses ANSYS Workbench platform to simulate the casting and rolling composite process, taking horizontal type machine as research object, conducts numerical simulation study of copper-aluminum solid-liquid heat-flow coupling, mainly different walking speed, aluminum pouring temperature, zone length, heat transfer coefficient on temperature field, liquid phase rate influence law, use it a theoretical guide for casting. The experiments casting-rolling were carried out optimize process...