Comparison on efficiency of various techniques in treatment of waste and sewage water - A comprehensive review

In the present scenario, environmental laws have become stringent towards health, economy and reduction of pollution. The pollution is a result of discharge of various organic and inorganic substances into the environment. The sources of pollution include domestic agricultural and industrial water. Conventional techniques such as chemical precipitation, carbon adsorption, ion exchange, evaporations and membrane processes are found to be effective in treatment of waste and sewage water. Recently, biological treatments have gained popularity to remove toxic and other harmful substances. The objective of the paper is to make comprehensive review including the performance of each technique in treatment of waste and sewage water. The research directions are also suggested based on the review

Fatty acid profiles of the main lipid classes of green seaweeds from fish pond aquaculture

The lipid composition of five species of green seaweeds (Chaetomorpha linum, Rhizoclonium riparium, Ulva intestinalis, Ulva lactuca, and Ulva prolifera) grown in fish pond aquaculture systems was studied. In particular, the overall fatty acid (FA) profile and the FA profile of each main lipid class found in these seaweed species were thoroughly analyzed. It was found that every seaweed had a specific FA profile, whose specificities were rendered more obvious with the study of the FA profile per lipid class. However, between U.lactuca and U.intestinalis, there were only minor differences. Nonetheless, it was possible to identify significant differences between the palmitic acid content in the phospholipid (PL) and glycolipid (GL) classes of each seaweed. A clear distinction between the FA profiles of R.riparium and C.linum, which belong to the Cladophorales order, and those of Ulva genus, Ulvales order, was also determined. Moreover, there were also differences among lipid classes, yielding large contrasts between PLs+GLs and triacylglycerols (TAGs) as well as between monoacylglycerols (MAGs) and free fatty acids (FFAs). This study also found evidence supporting the location of particular FAs in specific TAG positions. FA profiles have the potential to be used as a chemotaxonomic tool in green seaweeds, providing a simple method to check authenticity of seaweed used as food.Fundacao para a Ciencia e a Tecnologiainfo:eu-repo/semantics/publishedVersio

Progress of Bromophenols in Marine Algae from 2011 to 2020:Structure, Bioactivities, and Applications

Marine algae contain various bromophenols that have been shown to possess a variety of biological activities, including antiradical, antimicrobial, anticancer, antidiabetic, anti-inflammatory effects, and so on. Here, we briefly review the recent progress of these marine algae biomaterials and their derivatives from 2011 to 2020, with respect to structure, bioactivities, and their potential application as pharmaceuticals

Power analysis in health policy and systems research: A guide to research conceptualisation

Power is a growing area of study for researchers and practitioners working in the field of health policy and systems research (HPSR). Theoretical development and empirical research on power are crucial for providing deeper, more nuanced understandings of the mechanisms and structures leading to social inequities and health disparities; placing contemporary policy concerns in a wider historical, political and social context; and for contributing to the (re)design or reform of health systems to drive progress towards improved health outcomes. Nonetheless, explicit analyses of power in HPSR remain relatively infrequent, and there are no comprehensive resources that serve as theoretical and methodological starting points. This paper aims to fill this gap by providing a consolidated guide to researchers wishing to consider, design and conduct power analyses of health policies or systems. This practice article presents a synthesis of theoretical and conceptual understandings of power; describes methodologies and approaches for conducting power analyses; discusses how they might be appropriately combined; and throughout reflects on the importance of engaging with positionality through reflexive praxis. Expanding research on power in health policy and systems will generate key insights needed to address underlying drivers of health disparities and strengthen health systems for all

Coagulation of dissolved organic matter in surface water by novel titanium (III) chloride: Mechanistic surface chemical and spectroscopic characterisation

Problems caused by residual organics in treated water include the formation of disinfection by-products (DBP) following reaction with chlorine and being a substrate for microbial regrowth in the drinking water distribution system. Dissolved organic matter (DOM) can only be partially removed by conventional treatment process i.e. coagulation by Al- and Fe-based salts. In the present study, the performance of titanium trichloride (TiCl3) as a coagulant for surface water treatment was studied and compared with conventionally used aluminum sulfate (alum). Jar test experiments were performed at various coagulant doses and pH levels to determine the optimum conditions based on removal efficiencies of dissolved organic carbon (DOC). The zeta potential values were analysed for assessing the destabilisation mechanism of DOM flocs. The TiCl3 showed a significantly higher capacity for DOC removal at pH around 3 at which charge neutralization was found to be the dominant mechanism for the floc formation. This was further evident from the relatively larger floc sizes obtained with TiCl3 treatment. However, destabilization of Ti-flocs occurred at pH 4.5 through an adsorption-enmeshment mechanism due to a highly negative zeta potential. Additionally, fluorescence spectroscopic analyses showed that TiCl3 was more efficient than alum in removing humic compounds. A two-stage treatment process by alum and TiCl3, either as the same chemical or both showed better performance than a single dose treatment. The results indicate that TiCl3 could be an effective alternative coagulant for the treatment of waters, particularly those of low alkalinity and high DOC concentration and low pH wastewaters for removal of hydrophobic compounds and particulate matter

Power Analysis in Health Policy and Systems Research: a Guide to Research Conceptualisation

Power is a growing area of study for researchers and practitioners working in the field of health policy and systems research (HPSR). Theoretical development and empirical research on power are crucial for providing deeper, more nuanced understandings of the mechanisms and structures leading to social inequities and health disparities; placing contemporary policy concerns in a wider historical, political and social context; and for contributing to the (re)design or reform of health systems to drive progress towards improved health outcomes. Nonetheless, explicit analyses of power in HPSR remain relatively infrequent, and there are no comprehensive resources that serve as theoretical and methodological starting points. This paper aims to fill this gap by providing a consolidated guide to researchers wishing to consider, design and conduct power analyses of health policies or systems. This practice article presents a synthesis of theoretical and conceptual understandings of power; describes methodologies and approaches for conducting power analyses; discusses how they might be appropriately combined; and throughout reflects on the importance of engaging with positionality through reflexive praxis. Expanding research on power in health policy and systems will generate key insights needed to address underlying drivers of health disparities and strengthen health systems for all

Socialization, legitimation and the transfer of biomedical knowledge to low- and middle-income countries: analyzing the case of emergency medicine in India

BACKGROUND: Medical specialization is a key feature of biomedicine, and is a growing, but weakly understood aspect of health systems in many low- and middle-income countries (LMICs), including India. Emergency medicine is an example of a medical specialty that has been promoted in India by several high-income country stakeholders, including the Indian diaspora, through transnational and institutional partnerships. Despite the rapid evolution of emergency medicine in comparison to other specialties, this specialty has seen fragmentation in the stakeholder network and divergent training and policy objectives. Few empirical studies have examined the influence of stakeholders from high-income countries broadly, or of diasporas specifically, in transferring knowledge of medical specialization to LMICs. Using the concepts of socialization and legitimation, our goal is to examine the transfer of medical knowledge from high-income countries to LMICs through domestic, diasporic and foreign stakeholders, and the perceived impact of this knowledge on shaping health priorities in India. METHODS: This analysis was conducted as part of a broader study on the development of emergency medicine in India. We designed a qualitative case study focused on the early 1990s until 2015, analyzing data from in-depth interviewing (n = 87), document review (n = 248), and non-participant observation of conferences and meetings (n = 6). RESULTS: From the early 1990s, domestic stakeholders with exposure to emergency medicine in high-income countries began to establish Emergency Departments and initiate specialist training in the field. Their efforts were amplified by the active legitimation of emergency medicine by diasporic and foreign stakeholders, who formed transnational partnerships with domestic stakeholders and organized conferences, training programs and other activities to promote the field in India. However, despite a broad commitment to expanding specialist training, the network of domestic, diasporic and foreign stakeholders was highly fragmented, resulting in myriad unstandardized postgraduate training programs and duplicative policy agendas. Further, the focus in this time period was largely on training specialists, resulting in more emphasis on a medicalized, tertiary-level form of care. CONCLUSIONS: This analysis reveals the complexities of the roles and dynamics of domestic, diasporic and foreign stakeholders in the evolution of emergency medicine in India. More research and critical analyses are required to explore the transfer of medical knowledge, such as other medical specialties, models of clinical care, and medical technologies, from high-income countries to India

Assessing congestion in emergency obstetric care in public hospitals in Tamil Nadu

Purpose – The purpose of this paper is to assess congestion as the simultaneous occurrence of desirable health output (e.g. maternal admissions) along with undesirable output (e.g. still births (SB)), in emergency obstetric care settings of public hospitals in Tamil Nadu. Design/methodology/approach – The study is based on a cross-sectional data set of 97 public hospitals collected by the statistical cell of Tamil Nadu Health Systems Project for the year 2013–2014. The study uses three inputs – beds, doctors and nurses; three desirable outputs – maternal admissions, neonatal admission and live births; and four undesirable outputs – SB, intra-uterine deaths, neonatal deaths and maternal deaths. Congestion analysis, a variant of the data envelopment analysis (DEA) method and slack analysis, has been applied to detect an excessive use of some inputs or a shortfall in some outputs across these hospitals. Furthermore, the association between congestion and some contextual factors has been examined. Findings – On an average, the hospitals in our sample can increase the total amount of outputs by 62.8 percent by improving overall efficiency, and about 34.2 percent of this inefficiency can be attributed to congestion. Analysis of sub-samples showed that government hospitals at the taluk level have higher congestion than district headquarter hospitals. Congestion seems to decrease with greater hospital volume up to a limit; beyond that, it increases in obstetric care settings. Originality/value – Hospital-based efficiency studies in the Indian context, so far, have estimated relative efficiency among hospitals using the classical DEA method, but ignoring adverse health outcomes. Congestion analysis, an advance in the DEA method, considers how much the desirable outputs can be increased as also how much undesirable outputs affect efficiency

International Journal of Pharma and Bio Sciences RESEARCH ARTICLE BIOTECHNOLOGY ISOLATION, IDENTIFICATION OF BROMOPHENOL COMPOUND AND ANTIBACTERIAL ACTIVITY OF KAPPAPHYCUS sp

Extraction, isolation and partial purification of bromophenol compound in Kappaphycus sp. was carried out using TLC method. Antibacterial studies for specific bromophenol compound by disc diffusion method were conducted. Identification of a purified component was carried out by NMR technique. FTIRS and mass spectroscopy for elucidation of molecular structure of specific bromophenolic compound were done. From TLC studies, various bands were observed under UV light possessing the maximum value of RF 0.83 corresponding to RF1 band. The band was taken out and tested for antibacterial activity and detection of specific compound. Antimicrobial studies were carried out against various pathogens, Pseudomonas fluorescence, Staphylococcus aerus, Vibrio cholera, Proteus mirabilis and it was observed that the zone of inhibition for specific compound isolated from TLC was very prominent in case of Pseudomonas fluorescence and Staphylococcus aerus. C 13 –NMR spectrum of Bromophenol derivative in CdCl3 showed eight Carbon signals. In mass spectrum analysis of Bromophenol compound, the compound was found to contain two Br atoms from the molecular ion peak at m/z 349.1676 and was analyzed for chemical formula C11 H9 O3 Br2. Based on the above characterization the compound was confirmed as