62661Tách phân đoạn Limonoids có trong hạt các loại bưởi khác nhau sử dụng các loại dung môi khác nhau và khả năng kháng oxy hóa của chúng
Hàm lượng Limonoids và khả năng háng oxy hóa được xác định bằng phản ứng DPPH. Hàm lượng Limonoids tổng và hàm lượng Limonoids phân đoạn được tách bằng ethyl acetate cao hơn. Tất cả các phân đoạn tách từ hạt bưới Tân Triều có chưa hàm lượng Limonoids cao hơn hạt bưởi Đoan Hùng. Tuy nhiên khả năng kháng oxy hóa của các dịch chiết từ bưởi Đoan Hùng cao hơn so với dịch chiết bưởi Tân Triều.
62662Tactics for listening : basic pack B : with 2CD
Tactics for Listening Third edition is an activity-rich listening course with proven success in building skills in listening and conversation. It provides plenty of practice in testing and exam techniques. The result is confident listeners and exam success.
62663Tactics for listening : developing pack A
Presenting test-taking skills and practice tests for sucess on the TOEIC test and other exams. Conversation corner in each unit provides pronunciation and dictation practice.
62664Tactics for Listening : developing pack B (Kèm 2 CD)
Tactics for Listening Third Edition is an activity-rich listening course with proven success in building skills in listening and conversation. It provides plenty of practice in testing and exam techniques. The result is confident listeners – and exam success.
62665Tactics for listening : expanding pack A
Presenting test-taking skills and practice tests for sucess on the TOEIC test and other exams. Conversation corner in each unit provides pronunciation and dictation practice.
62666Tactics for listening : expanding pack B: 3rd ed. (2CD)
Tactics for Listening Third Edition is an activity-rich listening course with proven success in building skills in listening and conversation. Now with Tactics for Testing, it provides plenty of practice in testing and exam techniques. The result is confident listeners - and exam success.
62667Tactics for listening : expanding pack B: 3rd ed. (Kèm 2 CD)
Tactics for Listening Third Edition is an activity-rich listening course with proven success in building skills in listening and conversation. Now with Tactics for Testing, it provides plenty of practice in testing and exam techniques. The result is confident listeners - and exam success.
62668Tactics for Listening: Third Editon: Basic pack A
Presenting test-taking skills and practice tests for sucess on the TOEIC test and other exams. Conversation corner in each unit provides pronunciation and dictation practice.
62669Tactics for Listening: Third Editon: Basic pack A (2CD)
Presenting test-taking skills and practice tests for sucess on the TOEIC test and other exams. Conversation corner in each unit provides pronunciation and dictation practice.
62670Tactics for Listening: Third Editon: Basic pack B (2CD)
Tactics for Listening Third Edition is an activity-rich listening course with proven success in building skills in listening and conversation. It provides plenty of practice in testing and exam techniques. The result is confident listeners – and exam success.