Synthesis, Characterization, Crystal Structure, and Biological Studies of a Cadmium(II) Complex with a Tridentate Ligand 4′-Chloro-2,2′:6′,2′′-Terpyridine

A new Cd(II) complex with the ligand 4′-chloro-2,2′6′,2′′-terpyridine (Cltpy), [Cd(Cltpy)(I)2], has been synthesized and characterized by CHN elemental analysis, 1H-NMR, 13C-NMR, and IR spectroscopy and structurally analyzed by X-ray single-crystal diffraction. The single-crystal X-ray analyses show that the coordination number in complex is five with three terpyridine (Cltpy) N-donor atoms and two iodine atoms. The antibacterial activities of Cltpy and its Cd(II) complex are tested against different bacteria

Adopting an integrated project delivery collaboration framework: a case study of a wastewater treatment plant project in Vietnam

Integrated project delivery (IPD) is introduced as a new delivery system that aims to transform and enhance the current delivery systems. For such an accomplishment, the IPD integrates people, systems, and business into an integrated platform delivering accurate information and new technologies in a collaborative team environment. In this sense, the current research reviews the IPD principles, benefits, and challenges, and creates a proposed framework that applies a percentage ratio with mathematical weight calculation to classify and identify the IPD collaboration level present in a construction project. For the data validation, a case study is performed, where the information of the WWWTP project is inserted into the proposed framework. The results illustrate that the case study scores a total sum of 30% of IPD collaboration present in the project, where it is classified as having a low IPD collaboration level. The significance of this study is that it helps project stakeholders in the construction industry to understand the important factors that lead to IPD adoption and develop the principles of IPD. The current study creates an updated and simple approach framework aiming to support the professional area as well as allowing a solid basis for future research.</p

An FCM-based dynamic modeling of operability and maintainability barriers in road projects

Building a new road infrastructure in the country leads to economic and industrial growth. A massive amount of money is paid by governments to build them; however, they fail due to many reasons related to operability and maintainability (O&M) issues. They are not also completed within the expected budget, time, and quality; so they are not justifiable. As these factors have a strong impact on projects, to reduce the final cost and other mentioned problems, it is necessary to identify the existing O&M barriers, their interrelationships, and their effects on the three mentioned factors. An in-depth literature review is conducted to identify the barriers. The fuzzy cognitive mapping (FCM) technique is used to model O&M barriers using real case data analyses. The findings reveal that managerial factors have more significanct impacts on the project’s success compared to other factors such as organizational, human resource, technology, and project management. Therefore, management methods are very important in developing integration in the project. Identifying, classifying, and determining the effects of barriers to entry of O&M contractors on the cost, time, and quality of road infrastructure projects show the signifcance of conducting this research, which is necessary to deal with the existing barriers. All these ultimately increase quality and reduce time and cost in road infrastructure projects