Abstract: From 15 pepper soil samples collected in Daklak, fungal strains were isolated and screened for chitinase, protease, amylase, and cellulase activities. The strain NV01 was chosen for further investigation of morphology, colonial color and influences of nutrients on fungal sporulation. It has been shown that the PDA medium is suitable fo...
7 trang | Chia sẻ: thucuc2301 | Ngày: 01/12/2020 | Lượt xem: 686 | Lượt tải: 0
Abstract: Porcine reproductive and respiratory syndrome (PRRS) is one of the most dangerous swine dissease worldwide. Glycoprotein 5 (GP5) is the leading target for the development of vaccines against porcine reproductive and respiratory syndrome virus (PRRSV) infection. In this study, GP5 coding gene was cloned into pRTRA vector for generating ...
10 trang | Chia sẻ: thucuc2301 | Ngày: 01/12/2020 | Lượt xem: 759 | Lượt tải: 0
Abstracts: Semiliki Forest Virus (SFV) expression system permits a rapid and efficient production of large quantities of receptor proteins for pharmacological sudies. The system is based on replicon vector (pSFV2gen) and helper vector (pSFV-Helper2). The purpose of this study is to develope and use the improved SFV vectors to express human G-pro...
6 trang | Chia sẻ: thucuc2301 | Ngày: 01/12/2020 | Lượt xem: 795 | Lượt tải: 0
Abstract: Staphylococcal enterotoxins (SEs), produced by Staphylococcus aureus, are major cause of staphylococcal food poisoning. The aim of this study is to develop a lateral flow immunoassay (LFIA) for the rapid detection of SEs (SEA, SEB, SEC1, SED, SEE) in pasteurized milk, based on competitive lateral flow immunoassay. In this study, prepar...
9 trang | Chia sẻ: thucuc2301 | Ngày: 01/12/2020 | Lượt xem: 647 | Lượt tải: 0
Abstract: Ninh Binh is a province with a high economic growth rate, but it is accompanied by an increase in dust pollution. The study conducted TSP (Total suspended particulates) monitoring at 41 sites in Ninh Binh province from April 2013 to November 2016 and conducted the corresponding AQI (Air quality index) calculations. The results show tha...
8 trang | Chia sẻ: thucuc2301 | Ngày: 01/12/2020 | Lượt xem: 734 | Lượt tải: 0
Abstract: The aim of this work was to investigate the influence of silver nanoparticles on growth of green algae strain (Chlorella vulgaris). The silver nanoparticles were synthesized by electrochemical method. Characterizations of these nanoparticles were determined by Transmission electron microscopy (TEM), Scanning Electron Microscope (SEM) a...
6 trang | Chia sẻ: thucuc2301 | Ngày: 01/12/2020 | Lượt xem: 813 | Lượt tải: 0
Abstract: Catalase is an enzyme present in peroxisome in most aerobic cells and is a central component of detoxifying processes that rapidly suppress the formation of H2O2 by catalysing the degradation of H2O2 into H2O and O2. In this study, catalase was purified from Bacillus subtilis PY79 by three steps: ammonium sunfate precipitation, anion e...
9 trang | Chia sẻ: thucuc2301 | Ngày: 01/12/2020 | Lượt xem: 819 | Lượt tải: 0
Abstract: The vascular plants in Dong Van Commune, Pu Hoat Natural Reserve, Nghe An province was surveyed and identified with 557 species, 344 genera and 134 families of the 6 divisions (Psilotophyta, Lycopodiophyta, Equsetophyta, Polypodiophyta, Pinophyta and Magnoliophyta). The Magnoliophyta is the most diverse repersenting 90.64% of the total...
6 trang | Chia sẻ: thucuc2301 | Ngày: 01/12/2020 | Lượt xem: 667 | Lượt tải: 0
So sánh Nguyên phân & Giảm phân Nguyên phân • Một lần sao chép ADN, một lần chia • Thường các NST tương đồng không bắt cặp • Thường không có trao đổi chéo Giảm phân • Một lần sao chép ADN, hai lần chia • Các NST tương đồng bắt cặp ở kì trước I • Ít nhất có một trao đổi chéo cho một cặp NST tương đồngSo sánh Nguyên phân & Giảm phân...
36 trang | Chia sẻ: thucuc2301 | Ngày: 01/12/2020 | Lượt xem: 961 | Lượt tải: 0
Thụ tinh • Thụ tinh kép ở thực vật: - Một tinh tử phối hợp với tế bào trứng tạo thành hợp tử 2n, phát triển thành phôi. Tinh tử thứ 2 kết hợp với tế bào nhân tâm phát triển thành khối tế bào có bộ nhiễm sắc thể khác nhau: tam bội, lưỡng bội, tứ bội. Khối tế bào này chứ chất dinh dưỡng gọi là nội nhũ.
23 trang | Chia sẻ: thucuc2301 | Ngày: 01/12/2020 | Lượt xem: 714 | Lượt tải: 0