scholarly journals The Comparison of Electrodialysis and Nanofiltration in Nitrate Removal from Groundwater

2021 ◽  
Vol 6 (1) ◽  
pp. 17-30
Author(s):  
J Touir ◽  
S Kitanou ◽  
M Zait ◽  
S Belhamidi ◽  
M Belfaquir ◽  
...  
Keyword(s):  
Produced Water ◽  
Nitrate Removal ◽  
World Health ◽  
Quality Of Water ◽  
Physico Chemical ◽  
Major Interest ◽  
The World ◽  
Health Organization ◽  
Agricultural Regions

Nitrate groundwater contamination is of major interest all over the world. This problem arises in agricultural regions across Morocco. An excess amount of nitrate causes a serious problem in urban water networks and human health. Because of these health risks, considerable attention has been paid to find effective treatment processes to reduce nitrate concentrations to safe levels. The World Health Organization has set an acceptable level for nitrate in drinking water at 50 mg/L. The aim of this study is to reduce the nitrate concentration from groundwater using two membrane processes: Electrodialysis (ED) and Nanofiltration (NF). Efficiencies of these two technologies are compared in respect to nitrate ions removal, cost process and final quality of water. The results of technologies show that, for electrodialysis standards level can be achieved for a demineralization rate of 15% and the physico-chemical quality of the produced water is satisfactory. For nanofiltration we obtain a nitrate removal of 90% but the produced water is very de-mineralized and must be remineralized.

scholarly journals Salinization at the mouth of the São Francisco River: impacts on the Potengi community, Alagoas, Brazil

2020 ◽  
Vol 14 ◽  
Author(s):  
João Luís Vital Filho ◽  
Denise Souza Santos ◽  
Carla Maria Correia Martins ◽  
Ricardo Barros Silva ◽  
Gleica Maria Correia Martins
Keyword(s):  
World Health ◽  
Public Authorities ◽  
The Public ◽  
Sao Francisco River ◽  
Quality Of Water ◽  
São Francisco River ◽  
The World ◽  
Health Organization

The salinization process at the mouth of the São Francisco River has been caused serious damage to the ecosystem and the quality of life among riverine populations. This study aimed to assess the perception of the riverine populations regarding the effects of water salinization at the mouth of the São Francisco River, and also to analyze the quality of water that is provided to the Potengi community in Piaçabuçu, Alagoas, Brazil. For data collection, semi- tructured interviews were conducted with 22 riverine residents. The analyses of water samples were carried out at four places in the community, in which analyzes of pH, electrical conductivity, determination of salinity, and turbidity of the water were made. It was possible to identify, during the performance of this study, the inefficiency of the public authorities, both concerning the informative and mitigating actions, as the exposure of the population to high levels of sodium and turbid water, leading to changes in the parameters concerning data established by the World Health Organization (WHO). The results revealed that one of the samples analyzed presented a saline level 17 times higher than the limit established by the WHO, and a turbidity index was 15.6 times higher than the technical limit established. Therefore, these changes have affected the health of the community, directly compromising the use of water and the composition of the biota in the region.

scholarly journals Use of Municipal and Industrial Wastewater in and around Nangal for Construction purposes

2019 ◽  
Vol 8 (10) ◽  
pp. 23-26
Keyword(s):  
Industrial Wastewater ◽  
Point Sources ◽  
World Health ◽  
Sources Of Pollution ◽  
Quality Of Water ◽  
Physico Chemical ◽  
Untreated Water ◽  
Rapid Industrialization ◽  
Health Organization

Water is one of the vital needs of all living beings for daily activities like drinking, washing, bathing etc. It is the most important factor in shaping the land and regulating the climate. The quality of water for drinking and other activities if does not satisfy the standard conditions of physical, chemical and biological characteristics as prescribed it then becomes ineffective. The quality of water is usually described according to its. Hence it becomes necessary to find the suitability of water for various purposes like drinking, irrigation and Industrial purposes. Rapid industrialization and use of chemical fertilizers and pesticides in agricultural lands, discharge of voluminous municipal and industrial waste waters are causing deterioration of water quality vis-à-vis depleting of aquatic biota. This ultimately causes massive pollution not only to the rivers, ponds and wells but also drastically degrade the quality of groundwater. Research have been undertaken to use such type of waste water in different construction purposes. It is absolutely true that demand of fresh water by the construction sector is expected to increase due to high increase in the growth of construction activities in India (Dhanraj, 2017). Highly polluted Sutlej river in Punjab has been a constant encouragement to the environmentalists about reusing the contaminated water of the river. A total of 14 water samples from different point sources of pollution were collected and tested for physico-chemical parameters (pH, temperature, DO, BOD, COD, TSS, TDS), metals (As, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb and Zn) and microbiological parameter using World Health Organization (WHO) and the Bureau of Indian Standards (BIS) standards to justify how the strength of concrete goes on varying with respect to using the river water directly. An attempt was made to justify the use of wastewater directly in preparing concrete for construction purposes by testing concrete cubes prepared by the untreated water and comparing them with the strength of standard cubes.

scholarly journals Psychometric validation of the Chinese version of the PaArticular Scales among elderly residents in long-term care facilities with joint contractures

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Yi-chang Chen ◽  
Keh-chung Lin ◽  
Chen-Jung Chen ◽  
Shu-Hui Yeh ◽  
Ay-Woan Pan ◽  
...  
Keyword(s):  
World Health Organization ◽  
Long Term Care ◽  
Chinese Version ◽  
World Health ◽  
Term Care ◽  
Joint Contractures ◽  
The World ◽  
Health Organization

Abstract Background Joint contractures, which affect activity, participation, and quality of life, are common complications of neurological conditions among elderly residents in long-term care facilities. This study examined the reliability and validity of the Chinese version of the PaArticular Scales in a population with joint contractures. Methods A cross-sectional study design was used. The sample included elderly residents older than 64 years with joint contractures in an important joint who had lived at one of 12 long-term care facilities in Taiwan for more than 6 months (N = 243). The Chinese version of the PaArticular Scales for joint contractures was generated from the English version through five stages: translation, review, back-translation, review by a panel of specialists, and a pretest. Test-retest reliability, internal consistency reliability, construct validity, and criterion validity were evaluated, and the results were compared with those for the World Health Organization Quality of Life scale and the World Health Organization Disability Assessment Schedule. Results The Chinese version of the PaArticular Scales had excellent reliability, with a Cronbach α coefficient of 0.975 (mean score, 28.98; standard deviation, 17.34). An exploratory factor analysis showed three factors and one factor with an eigenvalue > 1 that explained 75.176 and 62.83 % of the total variance in the Activity subscale and Participation subscale, respectively. The subscale-to-total scale correlation analysis showed Pearson correlation coefficients of 0.881 for the Activity subscale and 0.843 for the Participation subscale. Pearson’s product-moment correlation revealed that the correlation coefficient (r) between the Chinese version of the PaArticular Scales and the World Health Organization Disability Assessment Schedule was 0.770, whereas that for the World Health Organization Quality of Life scale was − 0.553; these values were interpreted as large coefficients. Conclusions The underlying theoretical model of the Chinese version of the PaArticular Scales functions well in Taiwan and has acceptable levels of reliability and validity. However, the Chinese version must be further tested for applicability and generalizability in future studies, preferably with a larger sample and in different clinical domains.

scholarly journals Importance of immunoglobulin therapy for COVID-19 patients with lymphocytopenia

2021 ◽  
Vol 45 (1) ◽  
Author(s):  
Heba K. Nabih
Keyword(s):  
Passive Immunization ◽  
Immunoglobulin Therapy ◽  
World Health ◽  
Clinical Feature ◽  
Main Body ◽  
Plasma Therapy ◽  
Rapid Spread ◽  
The World ◽  
Health Organization

Abstract Background The global coronavirus disease 2019 (COVID-19) was announced as pandemic by the World Health Organization (WHO). With the increased number of infected and dead victims daily all over the world, it becomes necessary to stop or overcome its rapid spread. Main body Although the production of vaccine or even specified effective anti-virus may take about six months to a year, intravenous immunoglobulin (IVIg) may be clinically used as a safe treatment to save and improve the quality of life of patients with a variety of immunodeficiency diseases such as lymphocytopenia, which is a common clinical feature in COVID-19. Conclusion Through the current review, it was concluded that this passive immunization may promote the immunity to better fight against the virus, so the survival of the patients could be kept longer. The efficacy of immunotherapy with IVIg would be greater if the immune IgG antibodies were collected from convalescent plasma therapy.

scholarly journals Assessment of Water Quality of Blue Nile River in Sudan

2018 ◽  
Vol 1 (3) ◽  
pp. 1-14
Author(s):  
Rasha Babiker Gurashi Abu Sabah ◽  
Abubaker Haroun Mohamed Adam ◽  
Dawoud Mohamed Ali
Keyword(s):  
Water Quality ◽  
Seasonal Variation ◽  
World Health ◽  
Nile River ◽  
Blue Nile ◽  
Surrounding Environment ◽  
The World ◽  
Living Organisms ◽  
Health Organization

The objectives of this study were to quantify the fresh water quality of Blue Nile River before processing, identify the pollutants, and to determine the most polluted areas, and their impacts on living organisms as well as the surrounding environment. Thus, random water samples were collected and analyzed at the laboratory of the Ministry of Irrigation and Water Resources, Ground water and Wadis Directorates - Khartoum. The outcomes were compared with the World Health Organization standardization. The results revealed variations in the concentration of the studied elements taken from the different locations. But, the results indicated that the water quality is good, and it is within the permissible water use. However, further study is recommended to include seasonal variation as well as the biological analysis.

Re: Caron et al., 2021, sociocultural context and autistics quality of life: A comparison between Quebec and France

Autism ◽  
2021 ◽  
pp. 136236132110518
Author(s):  
Jacqui Rodgers
Keyword(s):  
Quality Of Life ◽  
World Health Organization ◽  
World Health ◽  
World Health Organization Quality ◽  
Life Measure ◽  
The World ◽  
Organization Quality ◽  
Autistic Adults ◽  
Health Organization

The purpose of this letter to the editors is to highlight to the readership of Autism the recommended use of the Autism Quality of Life measure (ASQoL) for research with autistic adults. The ASQoL was developed for use alongside the World Health Organization Quality of Life – Bref (WHOQOL-Bref) and the World Health Organization disabilities module. The letter raises some concerns about the use of the ASQoL as a standalone measure in a recent study by Caron et al. published in Autism. Lay abstract This letter to the editors discusses the use of the ASQoL for research with autistic adults. The autism quality of life measure was developed for use alongside two existing measures of quality of life developed by the World Health Organization. It was not developed as a questionnaire to be used in its own. The letter raises some concerns about the use of the autism quality of life measure as a standalone measure in a recent study by Caron et al., published in Autism.

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