In this study, Al-Si-Cu-Mg composites reinforced with Silicon carbide (SiC) particles and/or Carbon nanotubes (CNTs) were fabricated using semi-solid stirring casting technology (SSC). The aim of the study was to investigate the influence of SiC and/or CNTs on the mechanical properties, microstructural evolution, and deformation mechanisms of the Al-Si-Cu-Mg alloy. The findings indicated that the presence of SiC/CNTs in the composite had a significant effect on refining the α-Al phase and altering its grain orientation. Additionally, the results obtained from EBSD and TEM revealed that the microstructure of the Al-Si-Cu-Mg-SiC/CNTs hybrid composite (HAMC) underwent dynamic recrystallization (DRX) and static recrystallization (SRX), resulting in a fine equiaxed recrystallized structure. This process also led to the formation of high-angle grain boundaries (HAGBs) through dislocation rearrangement. The SiC particles were evenly distributed within the matrix, ensuring good interface bonding between SiC and α-Al phases. Moreover, the CNTs reacted with the matrix, resulting in the in-situ formation of the Al4C3 phase at the interface. The addition of SiC/CNTs significantly increased the tensile strength of HAMC at 25°C and 250°C, from 319MPa and 178MPa to 438MPa and 331MPa. Examination of the fracture surface of the hybrid composite unveiled that void formation occurred primarily at the regions surrounding the matrix-particle interface. AlSiCuMg Al Si Cu Mg (SiC andor or (CNTs semisolid semi solid SSC. SSC . (SSC) properties evolution alloy SiCCNTs αAl α orientation Additionally AlSiCuMgSiC/CNTs AlSiCuMgSiCCNTs (HAMC DRX (DRX SRX, SRX , (SRX) structure highangle high angle HAGBs (HAGBs rearrangement matrix phases Moreover insitu situ AlC C Al4C 25C 25 250C 250 250°C MPa 331MPa matrixparticle particle (SSC AlSiCuMgSiC (SRX 2

ABSTRACT Through a long-term micro-area positioning experiment (2006-2017), the precise fertilization locations of spring maize (Zea mays L.) in Jilin, China, were investigated using an embedded cement bucket pot. The effects of different fertilization placements and additional application of organic manure on maize yield, biomass, grain nutrient uptake, and soil fertility were examined. Six treatments were designed: base fertilizer + topdressing shallow application (BF1TD1); base fertilizer deep + topdressing shallow application (BF2TD1); base fertilizer + topdressing deep application (BF1TD2); base fertilizer deep + topdressing deep application (BF2TD2); base fertilizer + topdressing + organic manure shallow application (BF1TD1 + OS); and base fertilizer + topdressing shallow application + organic manure deep application (BF1TD1 + OD). After 12 years of continuous experimentation, the findings revealed that BF2TD2, BF1TD1 + OS, and BF1TD1 + OD exhibited 10.59 %, 25.17 %, and 29.34 % higher average yields than BF1TD1, respectively. Deep topdressing was more beneficial in increasing maize yield and nutrient accumulation, and additionally, increasing the use of organic fertilizer enhanced plant biomass and nutrient uptake. Over the 12 years considered, the soil organic matter in the 0-20 cm and 20-40 cm layers increased by 45.96 % and 80.61 %, respectively, and the soil pH increased from 0.38 to 0.48. In general, the deep application of organic manure was more beneficial for soil retention as it can increase soil fertility in the 0-40 cm layer. Considering the high yield and nutrient absorption and utilization of maize, technical advancement for soil fertilizer in whole-field tillage layers was crucial. longterm long term microarea micro area 20062017, 20062017 2006 2017 , (2006-2017) Zea L. L Jilin China pot uptake examined designed BFTD BF TD (BF1TD1) BF2TD1 (BF2TD1) BF1TD2 (BF1TD2) BF2TD2 (BF2TD2) (BF1TD OS OS) OD. . OD) 1 experimentation BF1TD 1059 10 59 10.5 2517 25 17 25.1 2934 29 34 29.3 respectively accumulation additionally considered 020 0 20 0-2 2040 40 20-4 4596 45 96 45.9 8061 80 61 80.6 038 38 0.3 048 48 0.48 general 040 0-4 layer wholefield whole field crucial 2006201 200 201 (2006-2017 BF2TD (BF2TD1 (BF1TD2 (BF2TD2 105 5 10. 251 2 25. 293 3 29. 02 0- 204 4 20- 459 9 45. 806 8 6 80. 03 0. 04 0.4 200620 (2006-201 (BF2TD 20062 (2006-20 (2006-2 (2006- (2006 (200 (20 (2 (

ABSTRACT Triply periodic minimal surface (TPMS) structures are commonly used for lightweight and energy-absorption applications. TPMS structures have a high porosity and are prone to the pinch-off phenomenon. In this study, we designed primitive and Schoen I-graph-wrapped package (I-WP) structures with different porosities. An optimized design function was introduced to obtain a high-porosity P-I structure, which was less prone to pinch off. The mechanical properties of the structures with different porosities achieved using selective laser sintering technology were investigated. Results showed that the porosities of primitive, I-WP, and P-I structures exhibited different correlations with the constant t. The elastic modulus and yield strength of all three structures decreased with porosity. For the same porosity, the compressive strength and elastic modulus of the P-I porous structure exceeded those of the primitive and I-WP porous structures. Additionally, the primitive porous structure was predominantly in the stretching deformation mode, whereas the I-WP and P-I structures were mostly in the stretching and bending deformation modes. The P-I porous structure showed better energy-absorption properties than the primitive and I-WP structures. This study enriched extremely small-surface porous structures and provided a relevant basis for their application in engineering fields. (TPMS energyabsorption energy absorption applications pinchoff off phenomenon Igraphwrapped I graph wrapped IWP WP (I-WP highporosity PI P investigated IWP, WP, t Additionally mode modes smallsurface small fields

RESUMO Antecedentes: Fatores preditores de resultados após tratamento endovascular (TE) para hemorragia subaracnóide aneurismática (HSA) não estão bem definidos. Identificá-los seria útil para determinar quais pacientes podem se beneficiar de TE. Objetivo: Identificar os fatores preditivos de resultados ruins após TE para HSA. Métodos: 120 pacientes com aneurismas cerebrais rompidos foram submetidos à embolização endovascular entre janeiro de 2017 e dezembro de 2018. A variabilidade da pressão arterial foi examinada usando-se o desvio padrão da PA sistólica de 24 horas (DPPAS- 24h) e da PA diastólica de 24 horas (DPPAD-24h). Os fatores preditores foram identificados por meio de análises de regressão univariada e multivariada. Todos os pacientes foram acompanhados por três meses. Resultados: No acompanhamento, 86 pacientes (71,7%) tiveram bons resultados e 34 (28,3%) tiveram resultados ruins. Pacientes com resultados ruins apresentaram DPPAS-24h significativamente maior do que aqueles com bons resultados (19,3 ± 5,5 vs 14,1 ± 4,8 mmHg; P <0,001). O DPPAD-24h não diferiu significativamente entre os pacientes com bons resultados e aqueles com resultados ruins (9,5 ± 2,3 vs 9,9 ± 3,5 mmHg; P = 0,464). Os fatores de risco significativos para resultados ruins após embolização endovascular foram os seguintes: idade ≥ 65 anos (razão de probabilidade [OR] = 23,0; intervalo de confiança de 95% [IC]: 3,0-175,9; P = 0,002); escala de Hunt-Hess 3-4 (OR = 6,8; IC 95%: 1,1-33,7; P = 0,039); escala de Fisher 3-4 (OR = 47,1; IC 95%: 3,8-586,5; P = 0,003); complicações pós-operatórias (OR = 6,1; IC 95%: 1,1-34,8; P = 0,042); e DPPAS 24h ≥ 15 mmHg (OR = 14,9; IC 95%: 4,0-55,2; P <0,001). Conclusão: O DPPAS 24h elevado é um fator preditivo possivelmente tratável para resultados ruins após TE para HSA.

ABSTRACT Background: Predictors of outcomes following endovascular treatment (ET) for aneurysmal subarachnoid hemorrhage (aSAH) are not well-defined. Identifying them would be beneficial in determining which patients might benefit from ET. Objective: To identify the predictive factors for poor outcomes following ET for aSAH. Methods: 120 patients with ruptured cerebral aneurysms underwent endovascular embolization between January 2017 and December 2018. Blood pressure variability was examined using the standard deviation of the 24-hour systolic blood pressure (24hSSD) and 24-hour diastolic blood pressure (24hDSD). Predictors were identified through univariate and multivariate regression analysis. All patients were followed up for three months. Results: At follow-up, 86 patients (71.7%) had good outcomes and 34 (28.3%) had poor outcomes. Patients with poor outcomes had significantly higher 24hSSD than those with good outcomes (19.3 ± 5.5 vs 14.1 ± 4.8 mmHg; P < 0.001). The 24hDSD did not differ significantly between patients with good outcomes and those with poor outcomes (9.5 ± 2.3 vs 9.9 ± 3.5 mmHg; P = 0.464). The following were significant risk factors for poor outcomes after endovascular embolization: age ≥ 65 years (odds ratio [OR] = 23.0; 95% confidence interval [CI]: 3.0-175.9; P = 0.002); Hunt-Hess grade 3-4 (OR = 6.8; 95% CI: 1.1-33.7; P = 0.039); Fisher grade 3-4 (OR = 47.1; 95% CI: 3.8-586.5; P = 0.003); postoperative complications (OR = 6.1; 95% CI: 1.1-34.8; P = 0.042); and 24hSSD ≥ 15 mmHg (OR = 14.9; 95% CI: 4.0-55.2; P < 0.001). Conclusion: Elevated 24hSSD is a possibly treatable predictive factor for poor outcomes after ET for aSAH.

Abstract Parthenogenetically activated oocytes cannot develop to term in mammals owing to abnormal epigenetic modifications. Methylation of the N6 position of adenosine (m6A) is a post-transcriptional epigenetic modification of RNA. To investigate the role of m6A methylation in parthenogenetic (PA) embryonic development, we analyzed METTL3, METTL14, FTO, ALKBH5, YTHDF2, IGF2BP1, and IGF2BP2 expression by quantitative real-time PCR. These genes were found dynamically expressed during the 2-cell, 4-cell, 8-cell, and blastocyst stages of the embryo. Compared to normally fertilized embryos, the expression of these genes was perturbed in PA embryos, especially at the 8-cell stage. Furthermore, immunofluorescence was used to detect m6A expression. The results demonstrated that m6A expression decreased in the 2-cell stage, whereas it increased in the 8-cell stage of PA embryos. Taken together, these results suggest that the expression of RNA methylation-related genes was perturbed, leading to abnormal m6A modification during early development in PA embryos.

Background Follistatin (FST), a secreted glycoprotein, is intrinsically linked to muscle hypertrophy. To explore the function of duck FST in myoblast proliferation and differentiation, the pEGFP-FST eukaryotic expression vector was constructed and identified. The biological activities of this vector were analyzed by transfecting pEGFP-FST into cultured duck myoblasts using Lipofectamine™ 2000 and subsequently determining the mRNA expression profiles of FST and myostatin (MSTN). Results The duck pEGFP-FST vector was successfully constructed and was confirmed to have high liposome-mediated transfection efficiency in duck myoblasts. Additionally, myoblasts transfected with pEGFP-FST had a higher biological activity. Significantly, the overexpression of FST in these cells significantly inhibited the mRNA expression of MSTN (a target gene that is negatively regulated by FST). Conclusions The duck pEGFP-FST vector has been constructed successfully and exhibits biological activity by promoting myoblast proliferation and differentiation in vitro.

Objective To analyse the epidemiology of measles in China and determine the progress made towards the national elimination of the disease. Methods We analysed measles surveillance data – on the age, sex, residence and vaccination status of each case and the corresponding outcome, dates of onset and report and laboratory results – collected between January 2005 and October 2013. Findings Between 2005 and October 2013, 596 391 measles cases and 368 measles-related deaths were reported in China. Annual incidence, in cases per 100 000 population, decreased from 9.95 in 2008 to 0.46 in 2012 but then rose to more than 1.96 in 2013. The number of provinces that reported an annual incidence of less than one case per million population increased from one in 2009 to 15 in 2012 but fell back to one in 2013. Median case age decreased from 83 months in 2005 to 14 months in 2012 and 11 months in January to October 2013. Between 2008 and 2012, the incidence of measles in all age groups, including those not targeted for vaccination, decreased by at least 93.6%. However, resurgence started in late 2012 and continued into 2013. Of the cases reported in January to October 2013, 40% were aged 8 months to 6 years. Conclusion Although there is evidence of progress towards the elimination of measles from China, resurgence in 2013 indicated that many children were still not being vaccinated on time. Routine immunization must be strengthened and the remaining immunity gaps need to be identified and filled.

Resumen Objetivo Analizar la epidemiología del sarampión en China y determinar el progreso hecho hacia la erradicación nacional de la enfermedad. Métodos Hemos analizado los datos de vigilancia del sarampión recogidos entre enero de 2005 y octubre de 2013 en base a la edad, el sexo, la residencia y el estado de vacunación de cada caso y el resultado correspondiente, las fechas de inicio de la enfermedad y de su comunicación, y los resultados de laboratorio. Resultados Entre 2005 y octubre de 2013, se registraron 596 391 casos de sarampión y 368 muertes relacionadas con el sarampión en China. La incidencia anual, en casos por 100 000 habitantes, descendió del 9,95 en 2008 al 0,46 en 2012, pero volvió a aumentar en el 2013 hasta más del 1,96. El número de provincias que informó acerca de una incidencia anual de menos de un caso por millón de habitantes aumentó de una en 2009 a 15 en 2012, pero volvió a caer a una en 2013. La edad media de los casos disminuyó de 83 a 14 meses en 2012, y a 11 meses de enero a octubre de 2013. Entre 2008 y 2012, la incidencia del sarampión en todos los grupos de edad, incluidos los que no estaban incluidos en la vacunación, se redujo en al menos un 93,6 %. Sin embargo, un resurgimiento comenzó a finales de 2012 y continuó en 2013. De los casos comunicados de enero a octubre de 2013, el 40 % tenía entre 8 meses y 6 años. Conclusión Aunque hay pruebas de los progresos hacia la erradicación del sarampión en China, el resurgimiento en el año 2013 mostró que todavía hay muchos niños que no reciben la vacuna a tiempo. Es necesario reforzar la vacunación sistemática e identificar y completar las lagunas restantes en la inmunización.

Résumé Objectif Analyser l'épidémiologie de la rougeole en Chine et déterminer les progrès réalisés sur la voie de l'élimination nationale de la maladie. Méthodes Nous avons analysé les données de surveillance de la rougeole – concernant l'âge, le sexe, le lieu de résidence et le statut vaccinal de chaque cas et les résultats correspondants, les dates de l'apparition et de signalement de la maladie, et les résultats de laboratoire –collectées entre janvier 2005 et octobre 2013 Résultats Entre 2005 et octobre 2013, 596 391 cas de rougeole et 368 décès liés à la rougeole ont été signalés en Chine. L'incidence annuelle exprimée en cas pour 100 000 habitants a diminué de 9,95 en 2008 à 0,46 en 2012, mais a ensuite augmenté à plus de 1,96 en 2013. Le nombre de provinces ayant signalé une incidence annuelle inférieure à un cas pour un million d'habitants a augmenté de 1 en 2009 à 15 en 2012, mais est retombé à 1 en 2013. L'âge médian des cas a diminué de 83 mois en 2005 à 14 mois en 2012 et à 11 mois pendant la période allant de janvier à octobre 2013. Entre 2008 et 2012, l'incidence de la rougeole dans tous les groupes d'âge, y compris ceux qui ne sont pas ciblés pour la vaccination, a diminué d'au moins 93,6%. Cependant, la résurgence a commencé à la fin de l'année 2012 et s'est poursuivie en 2013. Parmi les cas signalés de janvier à octobre 2013, 40% étaient âgés de 8 mois à 6 ans. Conclusion Bien qu'il y ait des preuves de progrès vers l'objectif d'élimination de la rougeole en Chine, la résurgence de 2013 indique que de nombreux enfants n'étaient toujours pas vaccinés à temps. La vaccination de routine doit être renforcée et les lacunes immunitaires restantes doivent être identifiées et comblées.

The anti-tumor effect of R-Phycoerythrin (R-PE) from Porphyra haitanensis was studied using cell line HeLa as an in vitro model and Sarcoma-180 (S180) tumor-bearing mice as an in vivo model. The results showed that the combination treatment of R-PE and photodynamic therapy PDT) significantly inhibited the growth of HeLa cells up to 81.5%, with a fair dose-effect relationship, but did not inhibit endothelial cells. The annexin v-fitc/PI fluorescence staining experiments demonstrated that at doses between 0~60µg/mL, apoptosis cells and later stage apoptosis cells or necrosis cells increased significantly as the R-PE dosage increased. DNA electrophoresis showed that after R-PE+PDT treatment of HeLa cells for 24 hours, a light "smear" band between 100~400bp appeared to indicate the degradation of genomic DNA. The QRT-PCR results showed that R-PE+PDT treatment increased caspase-3 and caspase-10 gene expression and decreased the Bcl-2 gene expression level significantly as the R-PE dose increased, implying that R-PE promoted HeLa cell apoptosis. Compared with untreated S180 tumor-bearing mice, R-PE injection significantly inhibited the growth of S180 in tumor-bearing mice up to 41.3% at a dose of 300mg-kg-1. Simultaneously, the significant increase of superoxide dismutase (SOD) activity in serum (p < 0.01) and the decrease of the malondialdehyde (MDA) level in liver suggests that R-PE improved the anti-oxidant ability of the S180 tumor-bearing mice, which may related to its antitumor effect. In addition, the R-PE caused a significant increase (p < 0.05) in the spleen index and thymus index, and a significant increase (p < 0.01) in lymphocyte proliferation, NK cell kill activity and the TNF-α level in the serum of S180 tumor-bearing mice. These results strongly suggest that the antitumor effect of R-PE from Porphyra haitanensis functioned by increasing the immunity and antioxidant ability of S180 tumor-bearing mice, promoting apoptosis by increasing protease gene expression and TNF-α secretion.

In order to understand the mechanisms of poor osseointegration following dental implants in type 2 diabetics, it is important to study the biological properties of alveolar bone osteoblasts isolated from these patients. We collected alveolar bone chips under aseptic conditions and cultured them in vitro using the tissue explants adherent method. The biological properties of these cells were characterized using the following methods: alkaline phosphatase (ALP) chemical staining for cell viability, Alizarin red staining for osteogenic characteristics, MTT test for cell proliferation, enzyme dynamics for ALP contents, radio-immunoassay for bone gla protein (BGP) concentration, and ELISA for the concentration of type I collagen (COL-I) in the supernatant. Furthermore, we detected the adhesion ability of two types of cells from titanium slices using non-specific immunofluorescence staining and cell count. The two cell forms showed no significant difference in morphology under the same culture conditions. However, the alveolar bone osteoblasts received from type 2 diabetic patients had slower growth, lower cell activity and calcium nodule formation than the normal ones. The concentration of ALP, BGP and COL-I was lower in the supernatant of alveolar bone osteoblasts received from type 2 diabetic patients than in that received from normal subjects (P < 0.05). The alveolar bone osteoblasts obtained from type 2 diabetic patients can be successfully cultured in vitro with the same morphology and biological characteristics as those from normal patients, but with slower growth and lower concentration of specific secretion and lower combining ability with titanium than normal ones.