Báo cáo nghiên cứu khoa học: " EFFECTS OF ULTRASOUND AND MICROWAVE IRRADIATION ON THE GREEN OXIDATION OF ALKYLARENES BY KMnO4/CuSO4 5H2O"ơ ppsx

... under microwave irradiation conditions. There were some exceptional cases: i) in the case of oxidation of 5, the reaction temperature provided by microwave or conventional heating increased the ... (7), and fluorene (8) at the benzylic position to form the corresponding aromatic ketones under solventless reaction conditions. Under the assisstance of ultrasound and microwave irradiation, the ... increased the yield of 5b, ii) in case of the oxidation of 4, the assistance of microwave or ultrasound increased the formation of 1a by cleavage of a methyl group, and iii) 6a and 7a became over-oxidized...

Báo cáo nghiên cứu khoa học: " LEVEL SET EVOLUTION WITH SPEED DEPENDING ON MEAN CURVATURE: EXISTENCE OF A WEAK SOLUTION" pps

... assertion holds for weak supersolutions and solutions. Theorem 2.2. Assume u is a weak solution of (2.4) and RR →Ψ: is continuous. Then )(: uv Ψ= is also a weak solution of (2.4). The proofs ... on mean curvature. The velocity of the motion is composed by mean curvature and a forcing term. We will derive an equation for the evolution containing the surfaces as the zero level sets of ... that there is a weak solution of equation (1.1) satisfying condition (1.2) in the weak sense. 2.DEFINITION AND ELEMENTARY PROPERTIES OF WEAK SOLUTIONS In this section we concern with the definition...

Báo cáo nghiên cứu khoa học: " EFFECTS OF LEADERSHIP ON LEADER REPUTATION " potx

... between the perceptions of the two groups of employees on the effects of leadership on leader reputation. 6. Discussion and conclusions This study examined the effects of leadership on the ... difference of the effects of Personal Morality on the overall leader reputation in two sectors was examined by constraining factor loading A. Secondly, the difference of the effects of Goal ... reputation are inextricably linked and have a proven impact on the bottom line. Regardless of the size and complexity of the organization, the CEO defines the style, and becomes the company's...

Báo cáo nghiên cứu khoa học " MAINTAINING FRUIT QUALITY AND INCREASING SHELF LIFE OF POMELO IN THE MEKONG DELTA OF SOUTHERN VIETNAM " pot

... retailers and consumers look at the skin colour, and use this as one of the determinates of fruit maturity and ripeness. Therefore, in this experiment we have tried to establish the effects of the ... rots of citrus are usually caused by Diplodia and Phomopsis and occur in regions with a high rainfall. Lesions of the fruit become dark, leathery and sunken and the fungus grows through the ... preserving the citrus fruit. The Control treatment fruit increased in acidity by 16%, peaking on day 21. Fruit then slowly decreased by 3% on day 35. The acidity then dropped sharply by 11% on day...

Báo cáo nghiên cứu khoa học: " VÀI NÉT VỀ CHỦ NGHĨA THỰC DỤNG MỸ SOME FEATURES OF AMERICAN PRAGMATISM TRỊNH SƠN HOAN" ppt

... is the main feature of American culture. It plays an important role in the development of America. This essay discusses the origin, the existence and development of American pragmatism, and ... existence and development of American pragmatism, and its influence on the regions beyond its boundary. 1. Đặt vấn đề Trong các trào lưu triết học hiện đại ở Mỹ thì chủ nghĩa thực dụng là ... vào miền Nam Việt Nam theo bước chân xâm lược của đạo quân viễn chinh Mỹ trong những năm 60 – 70 của thế kỷ XX. Bằng nhiều con đường, chủ nghĩa thực dụng đã trở thành một trong những trào lưu...

Báo cáo nghiên cứu khoa học " VỀ CƠ CHẾ HÌNH THÀNH NHỮNG HIỆN TƯỢNG THỦY TRIỀU PHỨC TẠP VÀ ĐỘC ĐÁO Ở BIỂN ĐÔNG " pot

... bathymetry and to give the detail explainations to the peculiarities of tidal regime of the sea such as the domination of the diurnal tide in the sea, the acceleration of the tide range and the differentiation ... differentiation of tide feature in different places of the sea, the changes of the relationship of the major tide constituents along their propagation way from the Pacific ocean to different regions of ... solving the system of linear equations for long waves on shallow water. The main attention is paid to the analyzing the relation of the oscillation regime of the sea to its real border geometry and...

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Báo cáo nghiên cứu khoa học " Kết quả năm 2009 và triển vọng phát triển kinh tế - xã hội năm 2010 ở Việt Nam" potx

... sự phục hồi của kinh tế Trung Quốc. Trong báo cáo mới nhất, Ngân hàng Thế giới (WB) đã nâng mức dự báo về tốc độ tăng trưởng kinh tế Trung Quốc lên 7,2% trong năm 2009 và năm 2010 cao hơn 8% ... nước này. Tuy nhiên, theo dự báo kinh tế Mỹ vẫn phục hồi chậm (dự báo sẽ theo mô hình chữ U có đáy kéo dài). Như vậy, tình trạng thiếu vốn của các nước đang phát triển trong đó có Việt Nam ... dục đào tạo, xóa đói giảm nghèo, bảo vệ môi trường sinh thái Nghiên cứu phân bố hợp lý hơn các dự án, chương trình phát triển xã hội theo các địa bàn, địa phương một các hợp lý, ưu tiên các vùng...

Báo cáo nghiên cứu khoa học " CITRUS INSECT PEST AND THEICITRUS INSECT PEST AND THEIR NATURAL ENEMIES " docx

... singly on the tip of the Butterfly lay eggs singly on the tip of the young leaves. The eggs of species are young leaves. The eggs of species are yellow, spherical and 2yellow, spherical and ... pupa and Three growth stages are followed by a pupa and then winged adult. The pupae are often found on then winged adult. The pupae are often found on leaf midribs and look like young soft ... ThịịMMỹỹNươngNươngSouthern Regional Plant ProtectionSouthern Regional Plant ProtectionCompiling based on Citrus pests and their natural enemies Compiling based on Citrus pests and their natural enemies...

Báo cáo nghiên cứu khoa học " IMPROVING CAPABILITY FOR ASSESSING SOIL CONSTRAINTS USING THE SCAMP DECISION SUPPORT SYSTEM " docx

... texture, pH, and EC of soils and to observe and record properties such as position in the landscape, drainage,permeability, colour, structure and compaction. The implications of these properties ... thatover 90% of participants would apply the knowledge and concepts presented at the workshops to theirlocal situation by organising training workshops and one- on -one interactions with farmers. ... result of the workshops. In particular there was increasedunderstanding of the impacts of key soilproperties such as field texture on soilmanagement, and greater awareness of the reasons for the...

báo cáo nghiên cứu khoa học ' xây dựng phương pháp xác định tổng asen trong một số nguồn nước bề mặt ở thành phố đà nẵng bằng phương pháp quang phổ hấp thụ phân tử uv-vis'

... complex system containing many organic and inorganic compounds in different forms. Great attention is being paid to heavy metals because of their toxicities. Especially, among them is Arsenic ... (As) – an extremely toxic metal. The protocol for total Arsenic determination in water by means of the UV-VIS spectroscopy method has been set up. The results of quantative analysis in some surface ... Arsen can be found in all the water samples (from 0,0027mg/lit to 0,0123mg/lit) but the arsen content is below the permissible limit in accordance with the Vietnamese standard (0,05mg/lit). 1....

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