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  • 1
    Online Resource
    Online Resource
    Publishing House for Science and Technology, Vietnam Academy of Science and Technology (Publications) ; 2022
    In:  Vietnam Journal of Marine Science and Technology Vol. 22, No. 2 ( 2022-06-21), p. 209-216
    In: Vietnam Journal of Marine Science and Technology, Publishing House for Science and Technology, Vietnam Academy of Science and Technology (Publications), Vol. 22, No. 2 ( 2022-06-21), p. 209-216
    Abstract: Plastic materials are defined as including the whole of organic polymers owning plasticity. Their production increases rapidly due to their superior properties and applications in our life. Currently, the annual production of plastic is estimated at nearly 400 million tons. About 10% of the plastic produced is discharged into the seas and oceans. Microplastics (MP, less than 5 mm in size) are non-biodegradable and persistent in the environment and have the ability to accumulate in various environmental components, organisms and other human beings through the food chain. Therefore, assessing microplastic pollution becomes essential for the marine and ocean environment. This study aims to evaluate microplastic pollution in Nam Dinh seawater. Water samples were taken in summer 2020 and spring 2021 in Giao Thuy district, Nam Dinh province. Samples were treated with 30% H2O2 solution to remove organic matters and then microplastic buoyantly separated using saturated NaCl solution. MP was identified through observation under a stereo microscope (Olympus SZX2-TR300) and its nature was determined through infrared spectroscopy (µFTIR). Results show that a large level of pollution (average 6 to 8 particles/m3 and 10–14 million particles/km2) is associated with the predominant of colored fibers among MP characteristics. Most of the microplastics identified are Polypropylene in nature. Next, more research needs to be invested in this pollution problem, such as expanding the scope and research object.
    Type of Medium: Online Resource
    ISSN: 1859-3097
    Language: Unknown
    Publisher: Publishing House for Science and Technology, Vietnam Academy of Science and Technology (Publications)
    Publication Date: 2022
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  • 2
    Online Resource
    Online Resource
    Vietnam National University Journal of Science ; 2020
    In:  VNU Journal of Science: Medical and Pharmaceutical Sciences Vol. 36, No. 3 ( 2020-09-25)
    In: VNU Journal of Science: Medical and Pharmaceutical Sciences, Vietnam National University Journal of Science, Vol. 36, No. 3 ( 2020-09-25)
    Abstract: This paper uses the model of experimental mouse liver damage with paracetamol to evaluate the liver protective effects of the methanol extract (Colocasia esculenta (L.) Schott) (MCE). After 8 days, the hepatoprotective activities of MCE in mice (damaged by paracetamol) at doses of 500, 1,000 and 2,000 mg/kg/day proved effective as the AST enzyme content decreased by 6.98, 22.84 and 26.59%, respectively; and ALT decreased by 53.17, 56.46 and 57.93%, respectively. MCE at a dose of 1,000 mg/kg/day had a protective effect equivalent to that of silymarin (used in liver treatment) at a dose of 50 mg/kg/day and MCE at a dose of 2,000 mg/kg/day had better effect. Observation of the microscopic liver tissue cross section also revealed that the mice treated with MCE of C. esculenta at doses of 1,000 and 2,000 mg/kg/day showed significantly improvement in their liver tissues compared to the non-treated control group. Keywords: Colocasia esculenta, hepatoprotective, paracetamol. References [1] S. Shahani. Evaluation of hepatoprotective efficacy of APCL-A poly herbal formulation in vivo in rats, Indian Drugs. 36(1999) 628-631.[2] Y. Cui, X. Yang, X. Lu, J. Chen, Y. Zhao. Protective effects of polyphenols-enriched extract from Huangshan Maofeng green tea against CCl4-induced liver injury in mice, Chemico- Biological Interactions 220 (5) (2014) 75-83. https://doi.org/10.1016/j.cbi.2014.06.018 [3] K.C. Choi, W.T. Chung, J.K. Kwon, J.Y. Yu, Y.S. Jang, S.M. Park, S.Y. Lee, J.C. Lee. Inhibitory effects of quercetin on aflatoxin B1 induced hepatic damage in mice, Food Chemical Toxicology, 48 (10) (2010) 2747-2753 . https://doi.org/10.1016/j.fct.2010.07.001[4] E.S. Sabina, J. Samue, S.R. Ramya, S. Patel, N. Mandal, P. Preety, P.P. Mishra, M.K. Rasool. Hepatoprotective and antioxidant potential of Spirulina fusiformis on acetaminophen induced hepatotoxicity in mice, International Journal of Integrative Biology 6 (1) (2009) 1-5. http://ijib.classicrus.com/.../1501.pdf[5] Pham Hoang Ho. Vietnamese plants, episode III. Young Publishing House, (1999), pp. 353 (in Vietnamese).[6] C.O. Eleazu, M. Iroaganachi, K.C. Eleazu. Ameliorative potentials of cocoyam (Colocasia esculenta L.) and unripe plantain (Musa paradisiaca L.) on the relative tissue weights ofstreptozotocin-induced diabetic rats. Journal of Diabetes Research, 197 (2013), https://doi.org/10.1155/2013/160964.[7] R.C. Cambie, L.R. Ferguson. Potential functional foods in the traditional Maori diet. Mutation Research Letters 523–524 (2003) 109-117. https://doi.org/10.1016/s0027-5107(02)00344-5[8] C.L. Abraham, K. Yoshinori, T. Masakuni, I. Hironori, O. Hirosuke, T. Hajime. Flavonoid glycosides in the shoot system of Okinawa Taumu (Colocasia esculenta S). Food Chemistry 119 (2010) 630- 635. https://doi.org/10.1016/j.foodchem.2009.07.004[9] P.J. Bouic, D. Etsebeth, R.W. Liebenberg, C.F. Albrecht, K. Pegel, J.P.P. Van. Beta sitosterol and beta sitosterol glycoside stimulate human peripheral blood lymphocyte proliferation: Implications for their use as an immunomodulatory vitamin combination. International Journal of Immuno-pharmacology 18 (12) (1996) 693-700. https://doi.org/10.1016/S0192-0561(97)85551-8.[10] Vo Van Chi. Dictionary of Vietnamese medicinal plants. Medical Publishing House (1997), pp. 871-873 (in Vietnamese).[11] Do Trung Dam. Method of determining drug toxicity. Medical Publishing House, Hanoi (2014), pp. 11-137 (in Vietnamese). [12] J.T. Litchfield, F. Wilcoxon. A simplified method of evaluating dose-effect experiments, Journal of Pharmcology and Experimental Therapeutics, 96 (2) (1949) 99-113. PMID: 18152921 [13] Doan Thi Nhu, Do Trung Dam, Pham Duy Mai. Method research of the pharmacological effect of drugs from medicinal herbs, Science and Technics Publishing House, Hanoi (2006), pp. 142 (in Vietnamese).[14] A. Godwin. Histochemical uses of haematoxylin - A Review. JPCS 1 (2011) 24-34. [15] Ho Thi Thanh Huyen, Thai Nguyen Hung Thu, Nguyen Thai An. Some results of plan microscopic studies and chemical composition of Bombax malabaricum DC., Bombacaceae, Proceeding Pharma Indochina VII, 10/2011, The 7th Indochina Conference on Pharmaceutical science, Bangkok, Thai Lan (2011) 270-274.[16] A.N. Chinonyelum, A.P. Uwadiegwu, O.C. Nwachukwu, O. Emmanuel. Evaluation of hepatoprotective activity of Colocasia esculenta (L. Schott) leaves on thioacetamide-induced hepatotoxicity in rats. Pakistan Journal Pharmaceutical Sciences, 28 (6S) (2015) 2237-2241. [17] O.F. Dayo, B.C. Eluke, E.O. Ukaejiofo, O.L. Olayinka, C.I. Johnpaul, O.A.K .Tajudeen, I. Chinwe, L.S. Adetona. Hepatoproactive and haematopoietic modulatory efficacy of leaf extract of Colocasia esculenta in Albino wistar rats. International Journal of Tropical Medicine 12 (3-6) (2017) 35-41. https://doi.org/3923/ijtmed.2017.35.41.          
    Type of Medium: Online Resource
    ISSN: 2588-1132 , 2615-9309
    Language: Unknown
    Publisher: Vietnam National University Journal of Science
    Publication Date: 2020
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  • 3
    Online Resource
    Online Resource
    Vietnam Association of Obstetrics and Gynecology - VAGO ; 2022
    In:  Tạp chí Phụ sản Vol. 20, No. 3 ( 2022-10-10), p. 150-155
    In: Tạp chí Phụ sản, Vietnam Association of Obstetrics and Gynecology - VAGO, Vol. 20, No. 3 ( 2022-10-10), p. 150-155
    Abstract: Mục tiêu: Xác định mối tương quan giữa chỉ số phân mảnh DNA tinh trùng (DFI - DNA fragmentation index) được đo bằng phương pháp khảo sát sự phân tán nhiễm sắc chất của tinh trùng (SCD - sperm chromatin dispersion test) và các chỉ số tinh dịch đồ ở nam giới vô sinh. Đối tượng và phương pháp: Nghiên cứu mô tả cắt ngang thực hiện trên 150 mẫu tinh dịch của bệnh nhân nam được lấy bằng phương pháp thủ dâm tại Trung tâm Hỗ trợ sinh sản và nam học - Bệnh viện Sản Nhi Phú Thọ. Đánh giá các chỉ số tinh dịch đồ theo WHO (2021) và xác định chỉ số phân mảnh DNA tinh trùng bằng phương pháp SCD. Kết quả: Chỉ số mức độ phân mảnh DNA tinh trùng tương quan nghịch với:mật độ tinh trùng (r = -0,405; p 〈 0,001), tỷ lệ di động (r = - 0,30; p 〈 0,001), tỷ lệ sống của tinh trùng (r = - 0,31; p 〈 0,001), hình dạng tinh trùng (r = -0,456; p = 〈 0,001). Không có sự khác biệt nào về mức độ phân mảnh DNA của tinh trùng theo: độ tuổi, thời gian kiêng xuất tinh, thể tích xuất tinh, pH. Kết luận: Kết quả DFI-SCD có sự tương quan nghịch với: mật độ tinh trùng, tỷ lệ tinh trùng di động, tỷ lệ sống của tinh trùng, hình dạng tinh trùng. Không tìm thấy mối tương quan giữa DFI-SCD với: độ tuổi, thời gian kiêng xuất tinh, pH.
    Type of Medium: Online Resource
    ISSN: 1859-3844 , 1859-3844
    URL: Issue
    Language: Unknown
    Publisher: Vietnam Association of Obstetrics and Gynecology - VAGO
    Publication Date: 2022
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  • 4
    Online Resource
    Online Resource
    Vietnam National University Journal of Science ; 2017
    In:  VNU Journal of Science: Natural Sciences and Technology Vol. 33, No. 2S ( 2017-10-10)
    In: VNU Journal of Science: Natural Sciences and Technology, Vietnam National University Journal of Science, Vol. 33, No. 2S ( 2017-10-10)
    Abstract: Typhonium flagelliforme is a medicinal plant that has variety of uses. In medicinal traditional T. flagelliforme is used to treatment cough, headache, stomach pain chronic, and tracheitis. Moreover, use fresh bulbs treatment furuncle, the bites of poisonous insects. The active components in T. flagelliforme are flavonoids. In this study, the T. flagelliforme extract was obtained by methanol  to determine the chemical composition. Then, The extracts of methanol are extracted with polarization increases gradually solvents such as haxane, dichloromethane and ethyl acetate. Determination of antioxidant activity, cytotoxic activity of extracted fractions. Results obtained showed that the chemical compositions by the qualitative reaction preliminary were identified from T. flagelliforme containing reducing sugars, amino acids, organic acids, flavonoids, alcaloids, sterols. The antioxidant capacity of the ethyl acetate fraction reached 94.76 μg/ml, 10 times higher than the positive control is Quercetin. Cytotoxic activity of the haxane and diclomethane extracted fractions from T. flagelliforme exhibited cytotoxic activity on all three experimental cancers cell lines: KB, HepG2, Lu after 72h of culture with IC50 values ​​range from 92.8 to 107.76 μg/ml. From dichlomethane extracted of T. flagelliforme was purified TF1 as Stigmast-4-en- 3-on.    
    Type of Medium: Online Resource
    ISSN: 2588-1140 , 2588-1140
    Language: Unknown
    Publisher: Vietnam National University Journal of Science
    Publication Date: 2017
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  • 5
    Online Resource
    Online Resource
    Project Euclid ; 2020
    In:  Proceedings of the Japan Academy, Series A, Mathematical Sciences Vol. 96, No. 2 ( 2020-2-1)
    In: Proceedings of the Japan Academy, Series A, Mathematical Sciences, Project Euclid, Vol. 96, No. 2 ( 2020-2-1)
    Type of Medium: Online Resource
    ISSN: 0386-2194
    RVK:
    Language: Unknown
    Publisher: Project Euclid
    Publication Date: 2020
    detail.hit.zdb_id: 2192927-0
    SSG: 17,1
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  • 6
    Online Resource
    Online Resource
    Dalat University ; 2022
    In:  Dalat University Journal of Science ( 2022-01-28), p. 86-112
    In: Dalat University Journal of Science, Dalat University, ( 2022-01-28), p. 86-112
    Abstract: This paper studies categories of definable subassignments with some category equivalences to semi-algebraic and constructible subsets of arc spaces of algebraic varieties. These equivalences lead to the identity of certain Grothendieck rings, which allows us to compare the motivic measure of Cluckers-Loeser with that of Denef-Loeser for certain classes of definable subassignments.
    Type of Medium: Online Resource
    ISSN: 0866-787X
    Language: Unknown
    Publisher: Dalat University
    Publication Date: 2022
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  • 7
    Online Resource
    Online Resource
    International Press of Boston ; 2022
    In:  Journal of Differential Geometry Vol. 120, No. 3 ( 2022-3-1)
    In: Journal of Differential Geometry, International Press of Boston, Vol. 120, No. 3 ( 2022-3-1)
    Type of Medium: Online Resource
    ISSN: 0022-040X
    Language: Unknown
    Publisher: International Press of Boston
    Publication Date: 2022
    detail.hit.zdb_id: 2004317-X
    detail.hit.zdb_id: 300904-X
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  • 8
    In: Ministry of Science and Technology, Vietnam, Ministry of Science and Technology, Vietnam (VMOST), Vol. 66, No. 1 ( 2024-4-20), p. 62-75
    Abstract: The global water crisis is being exacerbated by climate change, even in the United States. Recycled water is a feasible alternative to alleviate the water shortage, but it is constrained by humans’ perceptions. The current study examines how residents’ water scarcity awareness and climate change belief influence their willingness to use recycled water directly and indirectly. Bayesian Mindsponge Framework (BMF) analytics was employed on a dataset of 1831 residents in Albuquerque, New Mexico, an arid inland region in the US. We discovered that residents’ willingness to use direct recycled potable water is positively affected by their awareness of water scarcity, but the effect is conditional on their belief in the impacts of climate change on the water cycle. Meanwhile, the willingness to use indirect recycled potable water is influenced by water scarcity awareness, and the belief in climate change further enhances this effect. These findings implicate that fighting climate change denialism and informing the public of the water scarcity situation in the region can contribute to the effectiveness and sustainability of long-term water conservation and climate change alleviation efforts.
    Type of Medium: Online Resource
    ISSN: 2734-9748
    URL: Issue
    Language: Unknown
    Publisher: Ministry of Science and Technology, Vietnam (VMOST)
    Publication Date: 2024
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  • 9
    In: Tạp chí Nghiên cứu Y học, Hanoi Medical University, Vol. 155, No. 7 ( 2022-06-15), p. 1-7
    Abstract: MICA (Major histocompatibility complex class I - related gene A) thuộc họ MHC lớp I, là một kháng nguyên được bộc lộ trên bề mặt tế bào khối u hoặc nhiễm virus, có vai trò hoạt hóa các tế bào miễn dịch tấn công và tiêu diệt chúng. Nghiên cứu trước đã chỉ ra alen T của rs2596542 tại vùng 5’-UTR gen MICA làm tăng nguy cơ mắc ung thư vòm họng. Tuy nhiên EBV được biết đến là một tác nhân liên quan tới ung thư vòm họng lại chưa được làm rõ mối liên quan với đa hình đơn rs2596542. Do đó, nghiên cứu được thực hiện với mục đích đánh giá mối liên quan của rs2596542 với sự có mặt của EBV trên 100 mẫu mô ung thư vòm họng thể không biệt hóa bằng kĩ thuật Realtime-PCR. Kết quả nghiên cứu cho thấy lượng EBV tăng đáng kể ở bệnh nhân có kiểu gen TT (p = 0,001) và alen T (p = 0,005), qua đó góp phần làm rõ cơ chế tác động của EBV đối với ung thư vòm họng. Kết quả gợi ý rs2596542 cùng với EBV là dấu ấn sinh học trong chẩn đoán và sàng lọc ung thư vòm họng thể không biệt hóa nhạy cảm với virus.
    Type of Medium: Online Resource
    ISSN: 2354-080X , 2354-080X
    URL: Issue
    Language: Unknown
    Publisher: Hanoi Medical University
    Publication Date: 2022
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  • 10
    Online Resource
    Online Resource
    Institute of Community Health ; 2022
    In:  Tạp chí Y học Cộng đồng Vol. 63, No. 8 ( 2022-11-30)
    In: Tạp chí Y học Cộng đồng, Institute of Community Health, Vol. 63, No. 8 ( 2022-11-30)
    Abstract: Mục tiêu: Xác định mối tương quan giữa chỉ số phân mảnh DNA tinh trùng (DFI - DNAfragmentation index) được đo bằng phương pháp khảo sát sự phân tán nhiễm sắc chất của tinhtrùng (SCD - sperm chromatin dispersion test) và các chỉ số tinh dịch đồ ở nam giới vô sinh.Đối tượng và phương pháp: Nghiên cứu mô tả cắt ngang thực hiện trên 150 mẫu tinh dịch củabệnh nhân nam được lấy bằng phương pháp thủ dâm tại Trung tâm Hỗ trợ sinh sản và nam học -Bệnh viện Sản Nhi Phú Thọ. Đánh giá các chỉ số tinh dịch đồ theo WHO (2021) và xác định chỉ sốphân mảnh DNA tinh trùng bằng phương pháp SCD.Kết quả: Chỉ số mức độ phân mảnh DNA tinh trùng tương quan nghịch với: mật độ tinh trùng(r = -0,405, p 〈 0,001), tỷ lệ di động (r = - 0,30 và p 〈 0,001), tỷ lệ sống của tinh trùng (r = - 0,31 vàp 〈 0,001), hình dạng tinh trùng (r = -0,456 và p = 〈 0,001). Không có sư khác biệt nào về mức độphân mảnh DNA của tinh trùng theo: độ tuổi, thời gian kiêng xuất tinh, thể tích xuất tinh, pH.Kết luận: Kết quả DFI-SCD có sự tương quan nghịch với: mật độ tinh trùng, tỷ lệ tinh trùng diđộng, tỷ lệ sống của tinh trùng, hình dạng tinh trùng. Không tìm thấy mối tương quan giữa DFISCD với: độ tuổi, thời gian kiêng xuất tinh, pH.
    Type of Medium: Online Resource
    ISSN: 2354-0613
    URL: Issue
    Language: Unknown
    Publisher: Institute of Community Health
    Publication Date: 2022
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