Cu(II) complexes with a pendant octaazamacrocycle and m-bonded aromatic carboxylates

Three new cationic mixed-ligand Cu(II) complexes with N,N,N,N-tetrakis(2-pyridylmethyl)-1,4,8,11-tetraazacyclotetradecane (tpmc) and bridging aromatic mono- or dicarboxylate ligands were prepared. Elemental analysis, conductometric and magnetic measurements, as well as electronic and IR spectroscopy were employed for their characteriization. It is proposed that the complexes [Cu2(C6H5COO)tpmc](CIO4)3MeOH and [Cu2(Hpht)tpmc](CIO4)3H2O (H2pht = phthalic acid) are binuclear with m-coordination of the carboxylate monoanions. The third complex, [Cu4ipht(tpmc)2](CIO4)6NaClO42MeCN (H2ipht = isophthalic acid) is one of the rare tetranuclear Cu(II)-tpmc complexes with an aromatic dicarboxylate ion bridging two Cu2tpmc units. This was also confirmed by preliminary results of the determination of the crystal structure

Application and importance of cost-benefit analysis in energy efficiency projects implemented in public buildings: The case of Serbia

The main objective of this paper is to present the advantages of using Cost-Benefit analysis in energy efficiency projects implemented in public buildings, and to prove the hypothesis that Cost-Benefit analysis boosts the effectiveness and efficiency of the said type of projects. The paper offers theoretical and practical explanation of the implementation of Cost-Benefit analysis in the relevant area. Since energy efficiency projects in public buildings usually represent apart of a broader portfolio of similar projects and their implementation demands allocation of substantial financial resources, communities are often be interested in achieving maximal economic and non-economic benefits. This paper aims to demonstrate that Cost-Benefit analysis can represent an excellent contribution when attempting to select the projects for implementation within a broader portfolio of energy efficiency projects in public buildings. This hypothesis was demonstrated by putting a greater emphasis on non-economic benefits and the costs arising from implementation of the aforementioned types of projects. In addition, a practical test of this hypothesis was performed through the implementation of an energy efficiency portfolio in public buildings, worth several tens of millions of dollars the Serbian Energy Efficiency Project. The paper concludes that the use of Cost-Benefit analysis can help us to effectively evaluate and manage projects of this type aimed at achieving maximum benefits for the community in question

Double Primary Tumors-Renal Cell Carcinoma and Duodenal Mucinous Adenocarcinoma

A 59-year old patient was admited to the Gastroenterology Clinic with the signs of gastrointestinal bleeding. Computerized tomography (CT) and a barium-meal radiography revealed a circumferential nodular wall narrowing and incomplete stricture at the D2 part of the duodenum. CT also showed a poorly demarcated mass in the upper and lower poles of the left kidney. During the operation, the whole kidney together with the tumor was removed and also a part of the duodenum. Morphological features of both tumors were typical and distinctive enough to set the diagnosis of two independent primary tumors. The possibility of one being the metastasis of the other was excluded. The diagnosis of double primary malignant neoplasms - renal cell carcinoma and duodenal mucinous adenocarcinoma was made

Leadership in tomorrow's company

Available from British Library Document Supply Centre-DSC:f99/2347 / BLDSC - British Library Document Supply CentreSIGLEGBUnited Kingdo

The sarcoid granuloma: ‘epithelioid’ or ‘lymphocytic-epithelioid’ granuloma?

Abstract Background This study aims to analyze the structure and quantities of cellular elements in sarcoid granulomas. Methods We investigated 34 transbronchial lung biopsy samples obtained from 34 sarcoid patients. The quantity and composition of the cellular elements inside a granuloma were determined by the quantitative stereometry method, employing the numerical density as a stereological method. Results A total of 102 sarcoid granulomas were analyzed. The central part of all granulomas was occupied by epithelioid cells. Besides these, giant cells, lymphocytes, macrophages and plasma cells were also seen. The mean numerical density of all the cells in the central part of a sarcoid granuloma was 111,751 mm-3. Lymphocytes prevailed in number, exceeding the total count of all other cells. With a mean numerical density of 74,321 mm-3, lymphocytes were twice as numerous as both epithelioid cells and macrophages with a mean numerical density of 37,193 mm-3. Conclusions Lymphocytes are the predominant cell type in the central part of a sarcoid granuloma, significantly exceeding both epithelioid cells and macrophages in number, raising the question if the term “epithelioid granuloma”, routinely used to designate sarcoid granulomas, is correct, or if it would be more logical to call them “lymphocytic-epithelioid granulomas” instead. Trial registration This study was supported by the Serbian Ministry of Science and Environmental Protection Grant Number 175006/2011.</p

Project Management Maturity Analysis in the Serbian Energy Sector

In this paper we will present an analysis of the current state of practice in project management in the energy sector in Serbia, wherein the mentioned analysis is based on the results of original research on project maturity in this field. This paper includes a literature review about the current situation in the Serbian energy system, the basic concepts and significance of the research of project maturity in organizations, the basic concepts related to the projects in the energy sector, as well as the general state of project management in Serbia. After this, an analysis of the results of the research is presented, which is structured according to the elements of project maturity included in the research, and the methods of analysis. The analysis of the results includes a general analysis as well as statistical and cluster analysis. At the end, based on the analysis results, recommendations for improvements in the area of project management in the energy sector in Serbia are presented