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Investigations were undertaken to utilize flue gas desulfurization (FGD) gypsum for the treatment of leachate from the coal ash (CA) dump sites. Bench-scale investigations consisted of three main steps namely hydrogen sulfide (H(2)S) production by sulfate reducing bacteria (SRB) using sulfate from solubilized FGD gypsum as the electron acceptor, followed by leaching of heavy metals (HMs) from coal bottom ash (CBA) and subsequent precipitation of HMs using biologically produced sulfide. Leaching tests of CBA carried out at acidic pH revealed the existence of several HMs such as Cd, Cr, Hg, Pb, Mn, Cu, Ni and Zn. Molasses was used as the electron donor for the biological sulfate reduction (BSR) process which produced sulfide rich effluent with concentration up to 150 mg/L. Sulfide rich effluent from the sulfate reduction process was used to precipitate HMs as metal sulfides from CBA leachate. HM removal in the range from 40 to 100% was obtained through sulfide precipitation.

This paper aims to understand the intention of using e-book among the international students studying in Thailand. The paper adopts Technology Acceptance Model to comprehend the association between perceived ease of use, perceived usefulness, attitudes, and intention to use ebook for their studies. The study further considers trust as a moderating effect on the attitude of adopting e-book. The data was collected from international students studying in a private university in Thailand. A structural equation model (SEM) was done to understand the association between the constructs. The SEM results reveal that all the relationships are positively associated except that trust's moderating effect is negatively associated with perceived ease of use and attitudes. The results are helpful for the policymakers and administrators in the university in adopting e-book platforms for their students.

The current trend on globalization and digitalization leads to an increasing need for effective communication and collaboration. Hence, teams can be dispersed globally and therefore, global companies need to know how to develop an effective communication method and manage a diverse international team. Technological advancement creates opportunities in supporting virtual communication. Global human exchanges are accompanied by technologies that affect synchronous and asynchronous communication and therefore can facilitate collaboration. In the past, agreements have been organized through face-toface meetings, whereas nowadays e-mails, video conferences, and social media foster virtual teamwork (Steers et al. 2010). Communication can be described as an intentional activity, which requires willingness, a goal or a certain purpose (Ant et al. 2013). Organizational communication is the discipline which deals with the study of communication processes within the organizational field (Durneac 2012). The discipline needs to be understood to manage communication of global teams. Due to the introduction of new forms of electronic communication media, global leaders can benefit from the facilitation of organizational communication. Nevertheless, technical feasibility does not necessarily mean that the quality of communication improves (Suh 1999). The use of media, especially the distinction between the different types of communication, from virtually to face-to-face. The first model was developed in 1949 (Shannon & Weaver 1998, Ant et al. 2013). The model states, there is a transmitter converting the message into a signal to send it over to the communication channel of the receiver. During the process of transmission, there are unwanted and intended additions, which are called noises (distortions of sound, distortions of shape or shading of a picture or errors in transmission). These noises can change the transmitted signal. The communication system by Shannon & Weaver (1998) is symbolized as shown in figure 1. Watzlawick et al. (1996) stated that communication is not only done via words, but also nonverbal channels like facial expressions, gesture, and body posture (Watzlawick et al. 1996). This goes in line with the research of Thun (2014), who discovered that communication is always multidimensional (Rollka & Schultz 2011). The communication square