Natural sciences
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The Department of Organic Chemistry, the Department of Inorganic and Applied Chemistry, and the Department of Chemistry are among the six departments, six majors, and three research laboratories that make up the Faculty of Chemistry today, some 70 years after its founding. Physical chemistry, analytical chemistry, polymer chemistry, medicinal chemistry, and three key-research labs, including the labs for natural compounds, cancer, and computational chemistry.
6p dianmotminh02 03-05-2024 5 1 Download
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Flavonoids are a diverse group of natural compounds extensively studied in various research articles. They are widely distributed in the plant kingdom and exhibit various biological activities, including antioxidant, antiinflammatory, anticancer, antiviral, and antimicrobial effects. The genus Knema Lour., which contains many species in Southeast Asia, has been traditionally used to treat various ailments. The current review aims to provide a comprehensive update on the isolation of flavonoids and other secondary metabolites from the genus Knema Lour. between 1978 and 2022.
15p dianmotminh02 03-05-2024 5 2 Download
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This history of antimicrobials is marked with impressive discoveries, the majority of which have their origin in natural products. However in this work, the antimicrobial activity of β- nitrostyrenes and related compounds of synthetic origin is reviewed and investigated with a particular focus on the influence of fluorine functionality. Various fluorinated β-methyl-β-nitrostyrene compounds were prepared, their minimum inhibition concentration in cultures of Gram positive, Gram negative and a fungus and their lipophilicity was determined.
133p runthenight05 01-03-2023 4 3 Download
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The main aims of physical geodesy are to study the shape of the Earth, its gravity field and the geoid which is an equipotential surface closest to the mean sea level. Precise geoid determination has been an important research topic in geodesy and geophysics in the past two decades. Scientists and government agencies all around the world have made great efforts on the development of highaccuracy geoid models.
182p runthenight07 01-03-2023 7 2 Download
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The focus of this thesis was to study the chemotaxonomic relationship of selected southern Australian marine brown algae of the genera Cystophora and Sargassum. Consequently, this resulted in the isolation and structure elucidation of six new terpenoids from two southern Australian marine brown algae Cystophora moniliformis and Sargassum fallax together with 10 previously reported natural products. As a result of the re-isolation of these known secondary metabolites, updated and complete structural characterisation data could be provided for the first time for 7 of these compounds.
132p runthenight07 01-03-2023 5 2 Download
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This study proceeded to address the following objectives: To evaluate the effect of gas composition commonly used in modified atmosphere packaging (80% O2 and 20% CO2) on the shelf life of beef patties; to formulate an optimal solution containing natural antioxidant and antimicrobial preservatives and to study the effect of this combination and MAP on physiochemical attributes (surface colour (chroma, hue angle), metmyoglobin and oxmyoglobin contents, lipid stability) of fresh beef patties; to evaluate the effect of combined antioxidant – antimicrobial natural preservative and MAP on packag...
95p runthenight04 02-02-2023 1 1 Download
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The main aims of physical geodesy are to study the shape of the Earth, its gravity field and the geoid which is an equipotential surface closest to the mean sea level. Precise geoid determination has been an important research topic in geodesy and geophysics in the past two decades. Scientists and government agencies all around the world have made great efforts on the development of high-accuracy geoid models.
182p runthenight04 02-02-2023 7 3 Download
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This research examines how parametric loudspeakers may be considered unique acousmatic musical instruments; how the parametric acoustic array (PAA) can potentially make new forms of music and listening experiences; and how PAA-design problems can be overcome. Interdisciplinary in nature, the study uses grounded theory and experimental music practice within a design research methodology. Theory emerges from data, in concert with analysis and framing that draws on areas such as electroacoustic music, spatial composition, acoustics, PAA science/theory, modulation theory, and medium theory.
177p runthenight04 02-02-2023 2 2 Download
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Công nghệ chỉnh sửa genome đã mở ra một kỷ nguyên mới cho kỹ thuật thao tác trên vật liệu di truyền DNA. Kỹ thuật này được phát triển từ đầu những năm 1990, sau đó nhanh chóng trở thành công nghệ đột phá, đặc biệt trong chọn tạo giống cây trồng. Chỉnh sửa genome được ghi nhận là “phương pháp của năm” bởi tạp chí Nature Method, “bước đột phá” năm 2012, 2013 và 2015 bởi tạp chí Science.
4p viirenerosenfeld 18-05-2022 26 3 Download
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This research examined how the Association of Southeast Asian Nations (ASEAN) can improve upon the common economic community through the revision of policies related to labor and migration. The literature review suggested that economic prosperity and growth are significantly related to national openness to naturalization and foreign investment.
9p guernsey 28-12-2021 11 0 Download
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This study concluded that natural rubber was a more climatically suitable crop for Nakhon Si Thammarat province, if only the four stated climatic variables were considered.
9p guernsey 28-12-2021 16 0 Download
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The essential oils from the needles and branch of the Abies delaveyi subsp. fansipanensis was collected in Hoang Lien Natural Park, Lao Cai province and was obtained by steam distilation and the yields of essential oils were 0.27% and 0.08% from air-dry material. By the using GC/MS analysis, there are 44 and 52 constituents from needles and branch were identified and accounting 97.75% and 96.86% essential oil.
6p meyerowitz 25-12-2021 24 2 Download
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The present study focused on isolation, identification, and evaluation of glass biodeterioration properties such as organic acid and exopolysaccharide production of fungal strain Chaetomium globosum TTHF1-3 isolated from lens of optical instrument collected at Thai Hoa, Nghe An province.
9p meyerowitz 25-12-2021 10 0 Download
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This study examines the roles of crop boom (orange) in biodiversity conservation in Cham Chu Nature Reserve, Tuyen Quang province in the Northern Limestone Mountain Region of Vietnam. The results indicatedthat the local policy on orange development in Tuyen Quang since 2000 has made positive contributions to both local livelihood improvements and biodiversity conservation
13p meyerowitz 25-12-2021 14 0 Download
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In this study, the DNA fragment encoding for the C-terminus domain of the AopB from Aeromonas hydrophila AH-1 was cloned into pET-M expression vector and expressed in Escherichia coli BL21 (DE3) host cells. The recombinant AopB-C-terminus domain was successfully purified using immobilized nickel affinity chromatography as a soluble form. Crosslinking analysis among AopB-C-terminus molecules in solution showed that this domain existed as a mixture of tetramer, trimer, dimer, and monomer forms.
6p guitaracoustic02 08-12-2021 18 3 Download
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In this study, we studied the effects of different environmental factors such as light, temperature and air humidity and of internal SBES factors such as sulfate concentration, dissolved oxygen concentration and biocathode on voltage reversal in the SBES.
9p guitaracoustic02 08-12-2021 14 2 Download
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The focus of the present study is natural fermentation. And the choice of mead by this process was due to the growing search for foods categorized as "comfort food", which are foods that recall a pleasurable mental state, especially associated with a nostalgic and sentimental appeal, in addiction refer to foods that are homemade.
6p mudbound 10-12-2021 8 0 Download
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This study was carried out to evaluate the effect of Cobalt chloride (CoCl2) on cardiac mitochondrial function in an in vitro model. In the study, H9C2 cardiomyocytes were cultured in a medium containing different concentrations of CoCl2. Cell viability, cardiolipin content, mitochondrial function, and mitochondrial oxidative stress were assessed by using Cell Counting Kit-8 and suitable fluorescence kits.
6p guitaracoustic02 08-12-2021 4 1 Download
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In this study, we investigated whether osteoporosis-like phenotype could be induced in the transgenic larvae when heat-shock was applied at earlier time points, namely when larvae were at 1,2,3,4,5, or 6 dpf. The obtained results show that heat-shocks from the time point of 3 dpf onwards resulted in osteoporosis-like phenotype, while heat-shock at 1 or 2 dpf did not affect mineralized bone matrix in 11 dpf larvae.
7p guitaracoustic02 08-12-2021 8 1 Download
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The diversity of medicinal plants in Vietnam is a rich source to develop novel health products. In this study, the antioxidant and antimicrobial activities of ethanolic extracts of Pluchea indica, Drynaria fortunei, Stephania glabra, lemongrass (Cymbopogon citratus) and lime (Citrus aurantifolia) mixture, and ginger (Zingiber officinale) and kumquat (Citrus japonica) mixture, were evaluated.
7p guitaracoustic02 08-12-2021 12 0 Download