Supor (China)

Abstract The β -Ga 2 O 3 epitaxial thin films were grown on (001) β -Ga 2 O 3 substrates using metalorganic chemical vapor deposition (MOCVD), and the effects of key growth parameters — including temperature, pressure, and oxygen-to-gallium ratio (O 2 /Ga) — on the crystalline quality, surface morphology, and electrical properties of the films were systematically investigated. The results show that while variations in these parameters did not alter the (001) preferential orientation of the β -Ga 2 O 3 films, they significantly influenced other properties. By optimizing the growth parameters, films with a surface roughness as low as 1.5 nm and the full width at half maximum (FWHM) of 33.7 arcsec were achieved. X-ray photoelectron spectroscopy (XPS) analysis showed that the oxygen vacancy concentration was significantly reduced under the optimized O 2 /Ga ratio of 820. Schottky barrier diodes (SBDs) were fabricated from three different β -Ga 2 O 3 films grown under distinct O 2 /Ga ratios. The SBD fabricated under the optimized O 2 /Ga ratio of 820, exhibits a low turn-on voltage of 0.5 V, low on-resistance of 0.022 mΩ⋅cm 2 , and a high forward current density of 678.16 A/cm 2 at 3 V. These results provide essential material and theoretical foundations for the development of β -Ga 2 O 3 based high-power electronic devices.

Aiming at the problem of non-uniform and non-universal evaluation criteria of machine tools’ carbon emissions in the whole life-cycle analysis, an evaluation method of life-cycle carbon-emission analysis of machine tool based on declared unit was put forward by analyzing and summarizing the existing carbon emission evaluation models. A universal evaluation system for machine-tool life-cycle carbon-emission analysis was first established, and an appropriate declared unit was then selected according to industry characteristics and machine-tool types. Subsequently, an information-flow-based iERWC boundary division method was proposed to support data collection and carbon-emission calculation across five life-cycle stages. To better reflect carbon emissions in the phase of application, the life-cycle inventory incorporates the use of coated cutters, including the associated cutters’ consumption and replacement demands. Two heavy duty floor-milling and boring machine tools produced by Qiqihar No. 2 Machine Tool (Group) Co., Ltd. Were taken as examples to calculate and evaluate life-cycle carbon-emission analysis of machine tools, and the uncertainty analysis was carried out; the possible influencing factors were pointed out to ensure the comprehensive carbon-emission assessment of the whole life cycle.

The rapid expansion of computer networks has led to a surge in sophisticated cyber threats, posing significant risks to industrial network security. To address these challenges, this paper proposes the Adaptive Multi-Scale Graph Attention Network with Graph Laplacian Transform (AMGAT-GLT), a novel model designed for industrial network traffic anomaly detection. AMGAT-GLT adaptively captures complex relationships in network traffic graphs through multi-scale graph convolution and attention mechanisms, enabling precise identification of both localized and distributed anomalies. The model incorporates a Graph Laplacian Transform module, which enhances feature representation by leveraging eigendecomposition and transformation of the Graph Laplacian matrix, effectively integrating local node features with global structural insights. Experimental validation on real-world graph datasets demonstrates that the proposed model exhibits higher accuracy and robustness in graph data classification tasks compared to baseline models, significantly enhancing the ability to model complex graph structures and improving classification performance.

As espcies da ordem Enterobacterales so micro-organismos oportunistas envolvidos em uma grande variedade de infeces, principalmente em seres humanos.Essas infeces so agravadas quando associadas s linhagens multidrogas resistentes (MDR).As Enterobacterales esto amplamente distribudas em diferentes nichos, incluindo fontes ambientais.Os ecossistemas aquticos so reconhecidos como importantes reservatrios de bactrias MDR e seus genes de resistncias aos antimicrobianos (ARGs), os quais podem atuar co-selecionando bactrias tolerantes aos metais atravs da aquisio de plasmdeos.Nesse sentido, este estudo teve como objetivo caracterizar fenotipicamente e molecularmente isolados ambientais de Enterobacterales obtidos de diferentes mananciais do estado de So Paulo.Um total de 86 amostras de gua foram coletadas de 57 cidades

Kuan Xiong aerosol (KXA) is a Chinese herbal compound used to regulate qi-flowing to relieve pain and improve angina. However, only a few pharmacological studies on this traditional Chinese medicine preparation have been reported to confirm these activities. This article aims to observe the effect of resisting acute myocardial ischemia (AMI) in vivo and dilating vessel in vitro of KXA. The AMI model involves intravenously injecting the pituitary (2 U.kg-1) into the ear of rabbits. Electrocardiograph (ECG) T waves were then recorded after administration, and the falling range was calculated. Following this, the level of serum Cardiac troponin T (cTn-T) and the histopathology of the cardiac muscle tissue were evaluated. In vitro, the effect of KXA on vasodilation of isolated aortic rings that had been pre-contracted with KCl (30 mM) was observed. It was found that KXA reduced ECG ST-T waves and serum cTn-T in the rabbit AMI model, protecting myocardial tissue from fracturing and loss of myocardial fibers and inhibiting inflammatory cell infiltration, cavitation degeneration, and karyopyknosis of the myocardial matrix. Furthermore, the administration of 0.215, 1.075, and 2.150 mg.mL-1 of KXA resulted in significant relaxation of the aortic rings at a rate of 69.63 %, 90.14 %, and 118.72 % (p < 0.01) in the untreated ones, and a second shrinkage ratio of 20.17 %, 4.29 %, and 4.54 % (p < 0.01) in the untreated ones, respectively. These results suggest that KXA protects against AMI, contributes to the dilation of blood vessels, and has long-acting effectiveness.

"Introdução: Fotoproteção é indicada para reduzir a exposição ao dano actínico cutâneo, sendo relevante para a prevenção ao câncer da pele. A face é a área mais irradiada do corpo e é o local mais comum de ocorrência de tumores.Objetivo: Avaliar a quantidade aplicada de fotoprotetor tópico e a cobertura facial obtida por pacientes em seguimento por câncer da pele em uma instituição pública brasileira.Métodos: Estudo quasi-experimental envolvendo 40 pacientes oncológicos cutâneos. Foi solicitado que aplicassem filtro solar em suas faces (da forma como faziam habitualmente), e a quantidade (massa) utilizada foi aferida. Após, os participantes foram fotografados sob a luz de Wood para avaliar a homogeneidade da cobertura e as áreas faciais nas quais a cobertura falhou.Resultados: Quatorze participantes (35%) aplicaram uma quantidade menor do que a recomendada (2mg/cm2). As regiões com as menores coberturas foram as orelhas e a zona “H” da face.Conclusões: A aplicação insuficiente ou heterogênea de filtro solar em face, pescoço e orelhas promove falsa percepção de proteção, podendo acarretar uma exposição irresponsável. Conforme a idade da população e a incidência do câncer da pele aumentam, é essencial estimular a fotoproteção, por meio de informações apropriadas, especialmente entre indivíduos de alto risco."

Objetivo: Este e um estudo de revisao com o objetivo de descrever as caracteristicas fisicas e biologicas dos fios de sutura mais utilizados na pratica cirurgica diaria, e suas indicacoes de uso. Metodos: Foi feita revisao da literatura medica atraves de pesquisa nas bases de dados Pubmed e SciElo. Resultados: Foram descritos dados relativos as qualidades ideais dos fios de sutura, classificacao geral, criterios de indicacoes e usos, e as caracteristicas fisicas e biologicas dos fios absorviveis, inabsorviveis, monofilamentares e multifilamentares. Conclusao: Com esta revisao foi possivel sintetizar os conhecimentos atuais a respeito dos fios de sutura, que certamente serao uteis para estudantes de medicina, residentes e cirurgioes.