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The efficient synthesis of 12-substituted-3,4,4a,5,12,12a-hexahydrobenzo[b]acridine-1,6,11(2H)-triones starting from 2-amino-1,4-naphthoquinone, 1,3-cyclohexanedione, and different (hetero)aromatic aldehydes was developed. These reactions were carried out in acetic acid under microwave irradiation in the presence of p-toluenesulfonic acid as catalyst. The structure of the newly synthesized compounds were confirmed employing spectroscopic data as well as elemental analysis. The plausible mechanism of these three-component domino reactions was also described.

7p dianmotminh02 03-05-2024 4 1   Download

This article studies the current state of digital library services and the opportunities and challenges in designing and providing smart digital library services for university libraries in Ho Chi Minh City. The development of digital library services of university libraries in this city is uneven. This is the cornerstone for developing smart digital library services that need to be invested in and enhanced by schools. Smart digital library services are being started by a few libraries.

15p longtimenosee09 08-04-2024 6 0   Download

In particular, the aims of this research study were: To track the academic outcomes of a cohort of children who entered the EYRP in 2012 through to their Year One AusVELS results in 2014; to compare the performance in 2014 of children from the EYRP with non-EYRP children using their AusVELS results; to investigate what were the influential factors in the children’s academic development; to investigate the benefits of the program for the school and its community.

172p runthenight07 01-03-2023 6 2   Download

The primary goal of this research is accomplishing the BUUAS that can realize functions in the mission profile. In order to achieve this, the project starts with developing elemental aspects of the BUUAS. The configuration and propulsion system are two basic elements that the BUUAS must have to realize successfully operation. Besides, the necessary transition process between water and air must be investigated and carried by a conceived system.

187p runthenight04 02-02-2023 3 2   Download

Droughts happen when there is not enough rainfall for a longer period of time. When there is so little precipitation (rainfall, snow etc.) the whole region starts to dry out. Sometimes a drought take decades to develop fully and they are very difficult to predict. Rainfall data of 15 years (2001-2015) based on standard weeks was analyzed for Etawah district of Uttar Pradesh.

11p trinhthamhodang11 27-04-2021 16 2   Download

The paper starts by looking at the reality of designing and teaching ESP at some universities of education in Vietnam, and thus points out the necessity of providing ESP course designers with essential knowledge and skills so that they can develop an effective course and compile a suitable course book.

9p larachdumlanat127 20-12-2020 29 2   Download

The thesis proposes factors affecting the successful business start-up of business women; the difference in starting a successful business of a businesswoman according to the characteristics of entrepreneur and entrepreneurship. Proposals for government agencies in business start-up development of businesswomen.

0p kequaidan6 15-07-2020 32 1   Download

In this paper, staffs of 10 selected tech-start-ups located in Lagos have been surveyed using a questionnaire form. Four hypotheses were developed with a sample data of 300 employees across the different tech-start-ups.

19p lucastanguyen 01-06-2020 24 1   Download

A clean and efficient, mediated in water and assisted by ultrasound method for the synthesis of a series of N-substituted 1-amino-3-ferrocenyl-3-oxoprop-1-enes starting from acetyl ferrocene was developed.

10p tocectocec 25-05-2020 13 1   Download

Self-Help Group is a small voluntary association of poor people preferably the same socio-economic back drop. The micro- credit given to them to start enterprises and it can be for all women and all men groups. However, it has been the experience that women’s groups perform better in all the important activities of SHGs. SHG is a medium for the development of saving habit among the women. Majority of the respondents (65.00 per cent) had medium level of the knowledge about SHG & its activities. In case of aspect wise knowledge, respondents had highest knowledge about the legal rights.

5p caygaocaolon4 04-04-2020 16 1   Download

The dissertation examines the relationship between the relationship network, BMI and the start-up performance of start-up firms. From the achieved findings and results, the dissertation provides the implications for management to enhance the development of relationship networks, promote the implementation of BMI, and contribute to the improvement of start-up performance of start-up firms in Vietnam.

27p dungmaithuy 17-09-2019 36 4   Download

For hundreds of years, business people have been transmitting their wisdom generation to generation. In the middle 1990’s companies started to create units focused in managing their knowledge. Nowadays, Knowledge Management is still a relatively new discipline focused in developing the main competitive advantage that organizations have: the intellectual assets. Organizations recognise that Social Media can be enormously used to influence their customers. However, they exactly do not know how to confront this new tool.

87p nguyenyenyn117 18-06-2019 42 6   Download

This dissertation is aimed to identify “The importance of quality management in discount grocery stores in Ireland”. Particularly it is based on Germany discount retail chain case – Aldi. The dissertation starts with the overview of the retail especially discount grocery retail industry in Ireland, its development and changes through the years. The last part of this dissertation provides with some recommendations to improve the most problem-orientated areas revealed by this research. To consult more MBA essays, please see at: 127p nguyenyenyn117 14-06-2019 51 3   Download

Getting Started: Creating Applications with µVision hướng đến trình bày các vấn đề cơ bản như: Provides an overview of product installation and licensing and shows how to get support for the Keil development tools; discusses various microcontroller architectures supported by the Keil development tools and assists you in choosing the microcontroller best suited for your application;...

157p saobanglanhgia20 28-05-2016 32 3   Download

In this chapter you will learn: Know the content of and differences among strategies, marketing plans, and a marketing program; know how to use S.W.O.T. analysis and other planning approaches to zero in on a marketing strategy that fits the firm's objectives and resources and meets customers' needs; understand why the product classes and typical mixes are a good starting point for planning;...

8p allbymyself_06 26-01-2016 61 3   Download

Part 2 of Tài liệu Learn unity for 2D game development include content: UVs and animation, cameras and pixel perfection, input for 2D games, getting started with a 2D game, completing the 2D card game, optimization, wrapping things up. Inviting you to refer.

158p kiepnaybinhyen_02 17-12-2015 106 18   Download

Chemical structure of -aminonaphthalene (ANa) allows to deal with its electrochemical polymerisation, analogously as for aniline. To determine the oxidation potentials of ANa, the polymerisation has been realised on Pt electrode using cyclic polarisation. It was found that in sulphuric acid 0.5 M the first oxidation starts at 620 mV/SCE with the peak potential at 760 mV, and the second oxidation at 890 mV/SCE with the peak potential at 1230 mV. The PANa film development decreases the current peaks meaning a reduction of polymerisation rate.

5p uocvong03 24-09-2015 51 3   Download

NX is one of product development solutions CAD / CAM / CAE most advanced and closely integrated world. Spanning the entire range of product development, NX brings tremendous value to businesses of all sizes. It simplifies product design complexity, thus speeding up the process of introducing products to market. To help you understand more about this issue, invite you to refer to the content topic "NX7 for engineering design."

232p vuminhnhat92 03-09-2015 57 8   Download

High-Level Recombinant Protein Production in CHO Cells Using Lentiviral Vectors and the Cumate Gene-Switch developed  an efficient system to generate in less than 2 months, starting from the cDNA, pools of CHO cells stably expressing high-level of recombinant  proteins. It is based on lentiviral vectors (LVs) for stable transduction coupled with the cumate gene-switch for inducible and efficient gene expression.

13p thuyancn 01-06-2015 34 3   Download

Ngoại trừ boot screen còn rất đơn điệu, Windows 8 Developer Preview thực sự đã “giải tỏa cơn khát” bấy lâu của các 'vọc sĩ máy tính' với hàng loạt cải tiến cả về giao diện lẫn tính năng. Trong đó thành phần mới của Windows 8 Developer Preview đáng nhắc đến nhất chính là màn hình Start chứa các ứng dụng mang phong cách Metro giống trong hệ điều hành di động Windows Phone 7.

8p thuymonguyen88 30-07-2013 54 4   Download