http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Dat Le Tien,Tran Ngo Vuong Ngoc Bao,Xuan Do Thi,Xuan Ly Ngoc Thanh,Quang Le Thanh,Khuong Nguyen Quoc 한국작물학회 2024 Journal of crop science and biotechnology Vol.27 No.4
This study was conducted to evaluate the effectiveness of phosphorus P-solubilizing purple nonsulfur bacteria, Cereibacter sphaeroides ST16 and ST26, on improving soil quality, nutrient uptake, growth, and yield of rice farmed in salinized soil in the rice-shrimp system. A two-factor experiment was arranged in completely randomized blocks with four replications. Factor (A) represented P fertilizing rates, including 0%, 25%, 50%, 75%, and 100% P as the recommendation. Factor (B) consisted of the negative control (NC), a strain of C. sphaeroides ST16, C. sphaeroides ST26, and the mixture of ST16 and ST26. The results indicated that using the ST16-ST26 mixture decreased Na+ concentration by 15.2–21.1%, improved soluble P content by 11.5–21.0%, and reduced contents of Fe-P by 14.8–15.1%, Ca-P by 6.18–22.5%, and Al-P by 4.55–8.58%. Additionally, a single or the mixture application increased the total P uptake by 16.7–37.0% and decreased the total Na uptake by 6.12–17.2%, as compared with NC. In addition, fertilizing 100% P developed rice grain yield by 26.1–34.7% as compared with the 0% P applied. Simultaneously, using the ST16-ST26 mixture elevated the rice grain yield by 10.7–25.0%, chlorophyll content, and lowered proline content as compared with NC.
Chemical profiles and biological activities of essential oil of Citrus hystrix DC. peels
Do Minh Long,Le Pham Tan Quoc,Tran Thi Phuong Nhung,Vuong Bao Thy,Nguyen Le Quynh Nhu 한국식품저장유통학회 2023 한국식품저장유통학회지 Vol.30 No.3
Essential oil (EO) was extracted from the peel of Citrus hystrix DC. originating from Tinh Bien, An Giang province (Vietnam), using steam distillation. The study aimed to determine some physicochemical properties of Citrus hystrix peel EO (ChpEO), including the acid value (AV), saponification value (SV), ester value (EV), density, specific gravity, and freezing point. The chemical composition was also analyzed by gas chromatography-mass spectrometry (GC-MS). Compounds like β-pinene (30.19%), D-limonene (22.15%), and sabinene (21.37%), with antioxidant and antibacterial properties, had a relatively high content. The EO was also capable of inhibiting the growth of both Gram-positive and Gram-negative bacteria, including Pseudomonas aeruginosa (ATCC 27853), Staphylococcus aureus (ATCC 25923), Salmonella typhimurium (ATCC 13311), and Bacillus cereus (ATCC 11778) specifically.
A research on students’ readiness for Education 4.0 program
Le Hoanh Su,Nguyen Thi Hong Linh,Vo Dang Hong Ngan,Le Kieu Oanh,Nguyen Ngoc Thanh,Tran Vuong Bao Tran ASCONS 2020 INTERNATIONAL JOURNAL OF EMERGING MULTIDISCIPLINAR Vol.4 No.1
Nowadays, in Vietnam, the government tends to have a great concern to the 4th Industrial Revolution, and Education 4.0 is also a matter to be paid attention to. In order to implement Education 4.0, besides technology and social, people are an important factor involved in the development of the education 4.0. The purpose of the study is to find out the factors affecting student readiness for education 4.0. The proposed model consists of 8 independent factors: Internet self-efficacy, Online communication self-efficacy, Self-regulation, Creativity, Self-discovery, Upgrade, Collaboration, Attitude and 1 dependent factor namely Readiness. Based on 361 samples, this quantitative research was conducted: reliability testing, exploratory factor analysis, correlation coefficients and linear regression. The result shows that there are four key factors affecting readiness including Self-regulation, Creativity, Upgrade and Attitude. The result of t-test shows that the group of students who had experienced online learning had higher readiness for the education 4.0 than the others.