Intangible assets play an important role in increasing the value of companies. The performance of companies increasingly depends on ideas, information, and professional services rather than tangible assets. The question of how to accurately measure intangible assets remains a challenge for many scientists. This study aims to measure intangible assets of 396 companies listed on Vietnam’s stock market between 2010 and 2014 using the panel data technique by Yamayuchi (2014). The estimation shows that intangible assets make up a large share of total assets of companies. In addition, construction, steel, building materials, mining, and food are sectors with high intangible assets in Vietnam. The study also finds a positive impact of intangible assets on improving company performance. The findings demonstrate the importance of investing in intangible assets, such as R&D, technology, advertising, and human resources, to increase the value of a company in the future.
Tourism development policy will pay attention to stakeholders, especially the people, who play an important role. However, in reality, when people participate in rural tourism development, they are not equipped with basic knowledge and skills in managing and serving tourists. Because the benefits between stakeholders are still not clear, the participation of people in rural tourism development is currently only passive. Active participation need to be directed from the Government and local authorities because the concept that rural tourism development is not only about creating economic benefits but also associated with conservation and preservation, together with keeping and promoting cultural - historical values in rural areas.
Platelet-derived growth factor-BB has been approved by US Food and Drug Administration-FDA for the treatment of neuropathic ulcers. Since the number of diabetic patients has increased rapidly, it is necessary to study the production of PDGF-BB with low cost for treatment. Among the expression systems used for human recombinant protein expression, Pichia pastoris is the remarkable one with many advantages. Multiple integrated copies of target gene may give advance in driving up expression level of target protein. In this study, we succeeded in constructing and screening two yeast clones, which carry multi-copy of pdgf target gene. The two multi-copy yeast clones were subjected indetermination of PDGF expression level and compared to single-copy yeast clones. Our results showed that multi-copy pdgf yeast clones have higher level expression of target protein. PDGF produced by the multi-copy pdgf yeast clones accounted for over 50% of total secretory protein, and was folded in dimer form, which is necessary for performing biofunction in wound healing.
Môi trường, Viện Hàn lâm KH & CN Việt Nam 3 Văn phòng Bộ, Bộ Khoa học và Công nghệ TÓM TẮT: Một trong những nghiên cứu công nghệ gần đây gây được sự chú ý bởi tính bền vững, kinh tế và an toàn là tái sử dụng bùn sinh học của các hệ thống xử lý nước thông qua sử dụng chất trợ keo tụ sinh học (EPS) từ vi khuẩn. Từ bùn thải của hệ thống xử lý nước thải ở nhà máy bia Hà Nội đóng tại Mê Linh, Vĩnh Phúc, 10 chủng vi khuẩn đã được được phân lập trên môi trường TSB. Chủng BES19 là một trong 10 chủng vi khuẩn trên đã được phân loại dựa trên trình tự đầy đủ của gene mã hóa 16S rRNA. Vi khuẩn này thuộc chi Bacillus và được đặt tên là Bacillus sp. BES19. Các chủng vi khuẩn nghiên cứu đều thể hiện khả năng tạo bông rõ rệt, hoạt tính keo tụ với cao lanh có bổ sung Ca 2+ nồng độ 150mg/l đạt được từ 36 đến 80% khi bổ sung lượng EPS khác nhau. EPS sinh tổng hợp bởi chủng BES19 có hoạt tính keo tụ tốt nhất đạt 80% với hàm lượng LB-EPS và TB-EPS sinh ra lần lượt là 4330 mg/l và 689 mg/l. Kết quả này mở ra hướng nghiên cứu mới về sản xuất các chất trợ keo tụ sinh học thân thiện môi trường thay thế dần cho các chất keo tụ hóa học đang được sử dụng hiện nay. Từ khóa: Bacillus, bùn thải, chất trợ keo tụ sinh học, EPS, vi khuẩn.
Tourism development policy will pay attention to stakeholders, especially the people, who play an important role. However, in reality, when people participate in rural tourism development, they are not equipped with basic knowledge and skills in managing and serving tourists. Because the benefits between stakeholders are still not clear, the participation of people in rural tourism development is currently only passive. Active participation need to be directed from the Government and local authorities because the concept that rural tourism development is not only about creating economic benefits but also associated with conservation and preservation, together with keeping and promoting cultural - historical values in rural areas.
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