Advances in Social Media Research:Past, Present and Future

Social media comprises communication websites that facilitate relationship forming between users from diverse backgrounds, resulting in a rich social structure. User generated content encourages inquiry and decision-making. Given the relevance of social media to various stakeholders, it has received significant attention from researchers of various fields, including information systems. There exists no comprehensive review that integrates and synthesises the findings of literature on social media. This study discusses the findings of 132 papers (in selected IS journals) on social media and social networking published between 1997 and 2017. Most papers reviewed here examine the behavioural side of social media, investigate the aspect of reviews and recommendations, and study its integration for organizational purposes. Furthermore, many studies have investigated the viability of online communities/social media as a marketing medium, while others have explored various aspects of social media, including the risks associated with its use, the value that it creates, and the negative stigma attached to it within workplaces. The use of social media for information sharing during critical events as well as for seeking and/or rendering help has also been investigated in prior research. Other contexts include political and public administration, and the comparison between traditional and social media. Overall, our study identifies multiple emergent themes in the existing corpus, thereby furthering our understanding of advances in social media research. The integrated view of the extant literature that our study presents can help avoid duplication by future researchers, whilst offering fruitful lines of enquiry to help shape research for this emerging field

Synthetic, spectroscopic and electrochemical behaviour of biomimetic copper(II) complex with CuN₄ chromophore

614-618X-band electron paramagnetic resonance, electronic spectra and cyclic voltammetry of [Cu(Phen)2 ] (BF4)2 where phen = 1.10-phenanthroline, is reported here. The solution co-ordination structure of the title complex has been ascertained. The geometry around the copper(II) is distorted tetrahedral (due to tetrahedral distortion from planar) established by high g‖, low A‖ and high g‖/A‖ value and also by Symons plot. Superoxide dismutase activity of the compound has also been measured. The complex catalyzes the dismutation of O2- with an IC50 value of 3.5μ mol dm-3

Synthesis, characterization and superoxide dismutase studies of square pyramidal copper(II) complexes with bi and tridentate polyamine ligands

422-427Ternary copper(II) complexes containing bi and tridentate polyamine ligands, viz. [Cu(dien)(en)](ClO₄)₂(1), [Cu(dien)(temed)](ClO₄)₂(2) and [Cu(pmdt)(temed)](ClO₄)₂(3) where dien = diethylenetriamine, en = ethylenediamine, temed = N,N,N',N'-tetramethylethylenediamine and pmdt = N,N,N',N',N"-pentamethyldiethylenetriamine have been synthesized and characterized by elemental analysis, magnetic susceptibility, X-band EPR spectroscopy and electronic spectroscopy. Single crystal X-ray of complex (1) reveals the presence of a distorted square pyramidal geometry in the complex. The complex (1) crystallizes in the monoclinic space group P21/n with unit cell parameters a = 8.4014(10) Å, b = 14.474(3) Å and c = 12.935 (2) Å. Complex 1 has a five coordinate (4+1) geometry with a CuN₅ core. Magnetic susceptibility and electron paramagnetic resonance (EPR) behaviour of these complexes show their paramagnetic nature (3d⁹ Cu²⁺, S = ½). Superoxide dismutase activity of these complexes has also been measured

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Not AvailableImproper hardening leads to high field mortality and poor growth of in vitro raised plantlets which posesa major hurdle in utilization of in vitro propagation for pomegranate. In this study four arbuscular mycor-rhizal fungi (AMF) strains namely, Glomus mosseae, Acaulospora laevis, Glomus manihotis and a mixed AMFstrain were used as biohardening agents to improve survival and growth of in vitro raised pomegranateplantlets. Plantlets inoculated with G. mosseae gave highest survival (90.40% and 88.00% at 60 and 90 DAI,respectively) and root colonization per cent (47.40 and 87.60 at 60 and 90 DAI, respectively). The pre-dominant effect of G. mosseae was also evident on increased plant height (24.96 and 30.50 cm at 60 and90 DAI, respectively) and root length (23.42 and 27.68 cm at 60 and 90 DAI, respectively) of the inoculatedplantlets. G. mosseae and G. manihotis were found more effective in improving most of the growth, phys-iological and biochemical attributes of inoculated tissue culture raised plantlets. However, total phenol(24.94 and 28.62 g/g at 60 and 90 DAI, respectively) and total chlorophyll (3.70 and 3.96 mg/g at 60 and90 DAI, respectively) were found highest in mixed AMF inoculated plantlets.© 2012 Elsevier B.V. All rights reserved.1. IntroductionPomergranate (Punica granatum L.) is one of the favouritefruit crops of the world grown widely under tropical andsubtropical regions (Jalikop, 2007). It is suitable for grow-ing under arid and semiarid regions due to its hardy nature,low cost maintenance and high returns which make its culti-vation sustainable in long run particularly in resource deficitareas. The crop is also well known for its anti-cancerous,anti-microbial, anti-oxidant and anti-inflammatory properties(Albrecht et al., 2004; Lansky and Newman, 2007; Opara et al.,2009).In general, it is propagated by stem cuttings and air layering atefficiencies varying from 40% to 80%. However, in some parts ofIndia seedling plants are still used, but such seedlings show widevariation in growth and yield. At present, commercial orchardsin the world are established by stem cuttings. Air-layered plantsare commonly used for the cultivation of pomegranate in the Dec-can Plateau of India. All these conventional propagation methods∗Corresponding author.E-mail address: [email protected] (N.V. Singh).are less efficient as compared to in vitro propagation which pro-duces more propagules in lesser space and time. Besides these,in vitro raised plants are more uniform, come to synchronized flow-ering and fruiting and originally free from diseases. However, thepropagation by tissue culture has become difficult due to highfield mortality and slow growth rate of tender plantlets duringacclimatization phase due to poorly formed and weak root system(Hazarika, 2003), unfavourable nutritional and environmental con-ditions (Schubert et al., 1990), poorly developed cuticle (Louro et al.,1999) and/or non functional stomata (Lee and Wetzstein, 1988;Hazarika, 2003). The success rate of tissue culture raised plantletscan effectively be improved by proper hardening using bioagentslike arbuscular mycorrhizal fungi (Rupnawar and Navale, 2000).Many fruit crops develop a symbiotic mycorrhizal relationship andexhibit a high degree of dependence on this symbiosis for normaldevelopment and improved field performance (Aseri et al., 2008).Furthermore, AMF can mitigate the effects of extreme variationin temperature and water stress by improving water and nutri-ents uptake through increased rhizosphere exploring area (Krishnaet al., 2006). In the present study, different AMF strains were usedand their inoculation impact on survival, growth, physiologicaland biochemical attributes of in vitro raised plantlets had beenstudiedNot Availabl

Examining the Factors Affecting Behavioural Intention to Adopt Mobile Health in Jordan

International audienceHealth organizations worldwide express a considerable attention to utilize Mobile technology applications to provide a better health services to their people. One of the most emerging apps in this regard is Mobile health (M-health). Large amount of efforts, money, and time have been invested to provide such innovative technology. Yet, the adoption rate of these systems is still low. Additionally, such system has never been examined over the Jordanian context. Thus, this study aims to test the most important factors that could shape the intention of Jordanian people to use Mhealth. Four factors: perceived usefulness, social influence, awareness, and innovativeness were proposed as key predictor of behavioural intention. Data was collected using convenience sample size of 365 and was analyzed using structural equation modelling. The main statistical findings supported the role of perceived usefulness, social influence, and innovativeness. More discussion will also be provided regarding the current study practical and theoretical implications