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Recognizing emotions on human faces has always received attention and attraction from researchers. Along with the development of artificial intelligence, facial emotion recognition cameras are increasingly being introduced into various fields such as healthcare, education, and commerce. Thanks to the effective support of cameras integrated with artificial intelligence technology, the above fields are growing strongly. Therefore, this study will present an effective and simple facial emotion recognition model based on deep learning technology. Facial emotion recognition is performed automatically and accurately, thereby shortening implementation time and increasing work efficiency. In this study, the VGG-Face model is trained using the FER-2013 data set and applied to evaluate customer service quality. The input data are videos of human faces to perform emotion recognition and 7 different facial expressions have been performed recognition. Experimental results have shown the effectiveness of the model.

In reactor pressure vessel materials, the formation of Mn- and Ni-rich nanoclusters is a major cause of neutron irradiation embrittlement. The segregation of these solute atoms into dislocation loops has attracted attention as a mechanism to accelerate solute clustering. In this study, the behaviors of solute Mn and Ni atoms in Fe-0.6wt.%Ni, Fe-1.4wt.%Mn, and Fe-1.4wt.%Mn-0.6wt.%Ni alloys irradiated at 400 °C up to 3 dpa were analyzed using three-dimensional atom probe tomography. Solute atom clusters were observed in all materials, and their shapes were spherical, flat, and torus in FeNi, FeMn, and FeMnNi, respectively. In ternary alloy FeMnNi, Mn and Ni atoms were concentrated in the sample in the form of arcs, and the orientation of the plane containing the arcs was estimated by comparing field desorption images. The size, number density, and orientation of this structure were found to be in good agreement with those of both types of dislocation loops, namely, b = 1/2 〈111〉 and b = 〈100〉, identified in a previous study using the same material. The positions of Ni and Mn enrichment did not fully overlap. Ni atoms tended to be concentrated more in the inner part of the loop than the Mn atoms. Mn atoms were enriched only in the vicinity of the dislocation loops, whereas Ni atoms showed a higher concentration inside the dislocation loops than in the bulk.

Abstract Among the congener of dioxin, 2,3,7,8-TCDD is the most toxic, having a serious long-term impact on the environment and human health. UDP-glucuronosyltransferase 1A1 (UGT1A1) plays a crucial role in the detoxification and excretion of endogenous and exogenous lipophilic compounds, primarily in the liver and gastrointestinal tract. This study aimed to investigate the association of UGT1A1 gene polymorphisms, expression levels, and enzyme concentration with Agent Orange/Dioxin exposure. The study included 100 individuals exposed to Agent Orange/Dioxin nearby Da Nang and Bien Hoa airports in Vietnam and 100 healthy controls. UGT1A1 SNP rs10929303, rs1042640 and rs8330 were determined by Sanger sequencing, mRNA expression was quantified by RT-qPCR and plasma UGT1A1 concentrations were measured by ELISA. The results showed that UGT1A1 polymorphisms at SNPs rs10929303, rs1042640 and rs8330 were associated with Agent Orange/Dioxin exposure (OR = 0.55, P = 0.018; OR = 0.55, P = 0.018 and OR = 0.57, P = 0.026, respectively). UGT1A1 mRNA expression levels and enzyme concentration were significantly elevated in individuals exposed to Agent Orange/Dioxin compared to controls (P

Modification of graphene oxide (GO) by vinyltriethoxysilane (VTES) was investigated to study the effect of silanized GO on radical graft copolymerization of GO onto deproteinized natural rubber (DPNR). The modified GO, GO-VTES (a and b), was characterized by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy, contact angle, thermal gravimetric analysis, and scanning electron microscopy. The XRD results showed the appearance of an amorphous region of silica particles at a diffraction angle of 22°. The formation of silica was investigated by 29Si NMR, and it was found that the hydrolysis and condensation of VTES proceed more completely in basic conditions than in acidic conditions. The silica content of GO-VTES(b) was 43%, which is higher than that of GO-VTES(a) (8%). Morphology of silica was observed by SEM. The DPNR/GO-VTES nanocomposites prepared with the same amount of GO, GO-VTES(a), and GO-VTES(b) were characterized with tensile tests and dynamic mechanical tests. The stress at break of DPNR/GO-VTES(a) and DPNR/GO-VTES(b) was 5.2 MPa and 4.3 MPa, respectively, which were lower than that of DPNR/GO. However, it exhibited higher stress at small strains and higher storage modulus than DPNR/GO.

Kẽm kim loại là vật liệu làm anốt tiềm năng cho pin sạc zinc-ion với dung lượng riêng lý thuyết cao, giá thành thấp, thân thiện với môi trường. Tuy nhiên, anốt Zn kim loại có hiệu suất coulombic thấp và sự phát triển các cấu trúc hình nhánh cây trên bề mặt kẽm khi sạc/xả làm hạn chế ứng dụng thực tế của chúng. Trong nghiên cứu này, nhóm tác giả hợp kim hoá Zn kim loại với Al bằng phương pháp luyện kim đơn giản và khảo sát các đặc tính điện hoá của các hợp kim này khi ứng dụng làm anốt cho pin sạc Zinc-ion. Kết quả cho thấy, hợp kim Zn88Al12 có hiệu suất sạc/xả tốt hơn rất nhiều so với các hợp kim Zn50Al50 và Zn. Đặc biệt ở mật độ dòng điện cao tại 1,0 mA/cm2 và 0,5 mAh/cm2, hợp kim Zn88Al12 có thể hoạt động với điện thế ổn định với khoảng thời gian kéo dài tới 140h. Hợp kim Zn88Al12 khi ứng dụng làm anốt kết hợp với vật liệu trên cơ sở V2O5 làm catốt đạt dung lượng riêng cao khoảng 300 mAh/g ở mật độ dòng điện sạc-xả 50 mA/g.

In the present work, AlN was modified with vinyltriethoxysilane (VTES), and its effect on the properties of a thermally conductive composite of high impact polystyrene (HIPS), and AlN was investigated. Three composites, HIPS/AlN5, HIPS/AlN9, and HIPS/moAlN9, were prepared by mixing HIPS and AlN in a toluene solution, followed by hot pressing. The HIPS/AlN composite was characterized by tensile test, impact strength, flexural strength, and hardness shore D. The sample HIPS/moAlN9 showed the improvement of these properties compared to that of the HIPS/AlN9 sample. The increment of those mechanical properties was due to the good interaction between the modified AlN and HIPS resin matrix, which was revealed by morphology observation by SEM. Incorporating modified AlN into the HIPS matrix was also found to enhance the thermal conductivity by about 20%, from 0.15 for HIPS to 0.18 (W/m·K) for HIPS/moAlN9. It was explained due to the good adherence of AlN to the HIPS, which provided more thermal conductive routes than HIPS/AlN. This approach provides a possible strategy to prepare thermally conductive HIPS composite, which may be suitable for electronic device that required heat dissipation.

This study investigates international research collaboration (IRC) dynamics between the United States and the United Kingdom, examining co-publication and co-patent indicators. While IRC is crucial for enhancing research competitiveness and economic development, the choice of indicators remains a challenge. The paper addresses this gap by examining the association between co-publications and co-patents on the measurement of IRC. Findings indicate a robust positive correlation between co-publications and co-patents, reflecting increased collaboration in academic and industrial domains. Despite distinct growth rates, their aligned trends suggest potential redundancy in using both indicators. Notably, co-patents have a lasting positive effect on co-publications, emphasising the role of industrial innovations in forecasting scientific collaboration. Acknowledging study limitations, particularly its focus on core countries, prompts future research avenues to broaden insights into IRC dynamics. This study connects theoretical understanding with practical implications, offering nuanced perspectives for policymakers to formulate strategic plans for global scientific collaboration. Researchers are encouraged to consider these insights when selecting indicators, aligning choices with data availability and analytical ease to enhance the relevance and impact of their studies. [ABSTRACT FROM AUTHOR]

This study evaluated the genetic diversity of 253 taro (Colocasia esculenta (L.) Schott) germplasm accessions collected in Vietnam at the molecular level using 20 Simple Sequence Repeat (SSR) markers. High genetic diversity in the taro germplasm accessions were detected with 100% polymorphic SSR loci, and 89 alleles were obtained at the 20 SSR loci with an average of 4.45 alleles per locus, of which 14 markers had high polymorphism (3 alleles/locus). Polymorphic Information Content (PIC) values obtained at 20 SSR loci ranged from 0.31 (Ce0078) to 0.85 (HK34), with an average of 0.65. The genetic similarity coefficient within the accessions ranged from 0.39 to 1.00. All 253 accessions were classified into 2 groups at a genetic similarity level of 0.60; one of the groups (group 2) was divided into 8 sub-groups at a genetic similarity level of 0.64. Some accessions (such as 28279 and SP-19-009; SP-19-061 and SP-19-023; 28278 and SP-19-006) with a high genetic similarity coefficient (1.00) showed a very close genetic relationship, while others (such as 10063 and 11544) with a low genetic similarity coefficient (0.39) showed a fairly distant genetic relationship. The study's results provide a foundation for preserving and breeding taro in Vietnam. Five taro accessions (28211, SP-19-017, T.3578, T.3515, and 10098) carrying specific alleles that could be identified by 6 SSR markers (uq55–112, uq73–164, HK35, Ce0078, HK22, and HK31) were detected. Furthermore, the SSR marker approach showed the potential application in identifying genetic relationships and distinguishing different taro cultivars. [ABSTRACT FROM AUTHOR]