The School Improvement and the Role of Principal on Enhancing Student Learning Outcomes

This article reviews literature related to school principals and their role in improving student learning outcomes, by presenting and providing many information and evidence provided by academic research related to the principals and their role in student achievement. The article emphasizes that the managers are able to play a positive role in improving students’ achievement and results. Although the academic materials indicate indirect influence of managers on student achievement, this indirect influence is important and necessary and contributes greatly to the development of the students and to raising their achievements

Incorporating Thiobarbituric Acid with 1,2,4-Triazin-6-one Containing Nitroarginine Moiety

Abstract : Nitrilimines (2a,b), react with nitroarginine methyl ester (3) at room temperature, through cyclocondensation reaction, to give 1-aryl-3-substituted-1,2,4-triazin-6-ones (4a,b). Condensation of these compounds with thiosemicarbazide give the thiosemicarbazone derivatives (5a,b ) which upon heterocyclization with malonic acid give the thiobarbituric acid derivatives (6a,b). The structures of these compounds were deduced from: IR, mass, 1H and 13C NMR spectra. Keywords Nitrilimine , nitroarginine methyl ester, 1,2,4-triazin-6-ones, thiosemicarbazone, thiobarbituric acid derivatives

Dye Sensitized Solar Cells Based on Hydrazonoyl Synthetic Dyes

A group of chemical sensitizers of two hydrazonoyl based derivatives were synthesized. These derivatives contain a good π system for efficient light absorption and oxide sensitization. Precursor structure I was reacted with 2,6-diaminopyridine, 2-aminobenzoic acid, 4-aminobenzoic acid, 2-aminopyridine, 2,6-dinitrophenylhydrazine, and diphenylamine. The other precursor, structure (II), was reacted with 2-aminobenzoic acid, 2-amino-3-methyl, and 2-amino-4-methylpyridine. A total of 9 dyes were prepared and evaluated as sensitizers for dye-sensitized solar cells (DSSCs). Full computational calculations using DFT B3LYP 6-31+G were carried out for evaluation of band edge and band gap energies of all compounds. The absorption spectra of these dyes as well as cyclic voltammetry were used for the measurement of the HOMO, LUMO, and energy band gaps. The photovoltaic performance of the fabricated DSSCs was measured in different solutions comprising water, alcohol, phenylhydrazine, and dinitrophenylhydazine

ChE 450 Project#1 - Phase #1--Abillama, El-Thayer, Ismail

3 pages Document Provider Notes: The ChE 450 TA\u27s have evaluated all submitted Phase 1 reports. Based on this evaluation, the following 13 reports have received maximum credit from amongst the 41 that were turned in and are deemed as being above average. Related Documents: WSA10a, WSA10b, WSA10c, WSA10d, WSA10e, WSA10f, WSA10g, WSA10h, WSA10j, WSA10k, WSA10l, WSA10

A convenient synthesis of some new 1, 3, 4-benzothiadiazepin-5-ones

CiNii 国立情報学研究所 学術情報ナビゲータ[サイニィ]. メニュー 検索

Facile synthesis of model indazolo [2, 1-c][1, 3, 4] benzotriazepine-5, 13-diones

CiNii 国立情報学研究所 学術情報ナビゲータ[サイニィ]. メニュー 検索

Synthesis and Properties of Some Dihydrotetrazolo [5, 1-c][1, 2, 4] triazines

CiNii 国立情報学研究所 学術情報ナビゲータ[サイニィ]. メニュー 検索

Heterocycles from Nitrilimines. Part 4. Chiral 4, 5‐Dihydro‐1, 2, 4‐triazin‐6‐ones.

Heterocycles from Nitrilimines. Part 4. Chiral 4, 5‐Dihydro‐1, 2, 4‐triazin‐6‐ones