scholarly journals Ergene Nehri (Trakya, Türkiye) Alglerinden Bacillariophyta Üyelerinin Sistematik Kompozisyonu

2019 ◽  
Vol 7 (4) ◽  
pp. 550
Author(s):  
Rıza Akgül ◽  
Füsun Akgül ◽  
Veysel Aysel
Keyword(s):  
Drinking Water ◽  
Food Chain ◽  
Water Sources ◽  
Inland Waters ◽  
Algal Flora ◽  
Flora Of Turkey ◽  
Sample Points ◽  
First Time

There are a good many researches carried out to be able to find out the species of phytoplanktonic organisms which are widely met in the inland waters of Turkey and make up the first link of food chain in nature. In addition to this, there are lots of water sources the phytoplanktonic composition (one of the most effective methods of identifying drinking water in Turkey in which inland waters cover a huge area) and biodiversity of which have not been found out and listed. Ergene River is among the richest water basins in Turkey in terms of freshwater and there is not a comprehensive research carried out to determine the algae composition in this area. For that reason, Bacillariophyta members which are met in main streams supporting Ergene River, have been gathered seasonally; and systematic positions of these algae have been identified and photographed. As a consequence of this study; 114 different taxa species belonging to Coscinodiscophyceae (4) and Bacillariophyceae (110) taxa have been observed and found out in Ergene River and other watercourses along with water basins supporting this river. After these taxa have been gathered, how these are spread with regard to seasonal and sample points have been determined. All of these taxa, which have been identified with respect to freshwater algal flora of Turkey, have been recorded for the first time for that region while 22 of these taxa have been recorded for the first time for Turkey.

Hygiene Aspects of Drinking Water Sources Used in Primary Milk Production

2016 ◽  
Vol 1 (6) ◽  
pp. 311-317
Author(s):  
Nada Sasakova ◽  
Gabriela Gregova ◽  
Jan Venglovsky ◽  
Ingrid Papajova ◽  
Bozena Nowakowicz-Debek ◽  
...  
Keyword(s):  
Drinking Water ◽  
Milk Production ◽  
Water Sources ◽  
Drinking Water Sources

Resorcinarene Cavitand Polymers for the Remediation of Halomethanes and 1,4-Dioxane

2019 ◽  
Author(s):  
Luke Skala ◽  
Anna Yang ◽  
Max Justin Klemes ◽  
Leilei Xiao ◽  
William Dichtel
Keyword(s):  
Drinking Water ◽  
Activated Carbon ◽  
High Capacity ◽  
The United States ◽  
Water Sources ◽  
Disinfection Byproducts ◽  
Porous Polymer ◽  
Organic Micropollutants ◽  
Executive Summary ◽  
Regulatory Limits

<p>Executive summary: Porous resorcinarene-containing polymers are used to remove halomethane disinfection byproducts and 1,4-dioxane from water.<br></p><p><br></p><p>Disinfection byproducts such as trihalomethanes are some of the most common micropollutants found in drinking water. Trihalomethanes are formed upon chlorination of natural organic matter (NOM) found in many drinking water sources. Municipalities that produce drinking water from surface water sources struggle to remain below regulatory limits for CHCl<sub>3</sub> and other trihalomethanes (80 mg L<sup>–1</sup> in the United States). Inspired by molecular CHCl<sub>3</sub>⊂cavitand host-guest complexes, we designed a porous polymer comprised of resorcinarene receptors. These materials show higher affinity for halomethanes than a specialty activated carbon used for trihalomethane removal. The cavitand polymers show similar removal kinetics as activated carbon and have high capacity (49 mg g<sup>–1</sup> of CHCl<sub>3</sub>). Furthermore, these materials maintain their performance in real drinking water and can be thermally regenerated under mild conditions. Cavitand polymers also outperform activated carbon in their adsorption of 1,4-dioxane, which is difficult to remove and contaminates many public water sources. These materials show promise for removing toxic organic micropollutants and further demonstrate the value of using supramolecular chemistry to design novel absorbents for water purification.<br></p>

scholarly journals Water Quality and Hydrogeochemical Characteristics of Some Karst Water Sources in Apuseni Mountains, Romania

Water ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 857
Author(s):  
Maria-Alexandra Hoaghia ◽  
Ana Moldovan ◽  
Eniko Kovacs ◽  
Ionut Cornel Mirea ◽  
Marius Kenesz ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Chemistry ◽  
Major Ions ◽  
Anthropogenic Activities ◽  
Water Sources ◽  
Main Process ◽  
Karst Water ◽  
Rock Interaction ◽  
Apuseni Mountains ◽  
Karst Waters

Human activities and natural factors determine the hydrogeochemical characteristics of karst groundwaters and their use as drinking water. This study assesses the hydrogeochemical characteristics of 14 karst water sources in the Apuseni Mountains (NW Romania) and their potential use as drinking water sources. As shown by the Durov and by the Piper diagrams, the chemical composition of the waters is typical of karst waters as it is dominated by HCO3− and Ca2+, having a circumneutral to alkaline pH and total dissolved solids ranging between 131 and 1092 mg L−1. The relation between the major ions revealed that dissolution is the main process contributing to the water chemistry. Limestone and dolostone are the main Ca and Mg sources, while halite is the main Na and Cl source. The Gibbs diagram confirmed the rock dominance of the water chemistry. The groundwater quality index (GWQI) showed that the waters are of excellent quality, except for two waters that displayed medium and good quality status. The quality of the studied karst waters is influenced by the geological characteristics, mainly by the water–rock interaction and, to a more limited extent, by anthropogenic activities. The investigated karst waters could be exploited as drinking water resources in the study area. The results of the present study highlight the importance of karst waters in the context of good-quality water shortage but also the vulnerability of this resource to anthropogenic influences.

A facile technique for automatically counting odor-producing algae (Pseudanabaena sp.) in drinking water sources

2021 ◽  
Author(s):  
Sandrine Boivin ◽  
Eri Hasegawa ◽  
Dabide Yamaguchi ◽  
Takahiro Fujioka
Keyword(s):  
Drinking Water ◽  
Water Sources ◽  
Water Utilities ◽  
Drinking Water Sources

The frequent analysis of the 2-methylisoborneol (2-MIB)-generating algae, Pseudanabaena sp., for predicting odor occurrence in drinking water sources is a major challenge for many drinking water utilities. This study aims...

scholarly journals Nasopharyngeal hirudiniasis: a hidden culprit—a case report

2021 ◽  
Vol 37 (1) ◽  
Author(s):  
Shreya Agarwal ◽  
Nimish Gupta
Keyword(s):  
Drinking Water ◽  
Case Report ◽  
Foreign Body ◽  
Male Patient ◽  
Natural Water ◽  
Water Sources ◽  
Endoscopic Examination ◽  
Rare Occurrence ◽  
Safety Measures ◽  
Case Presentation

Abstract Background Leech infestation in the nose or nasopharyngeal region is a rare occurrence. The most common known cause is drinking water from natural water sources like ponds and rivers. Its hidden location of attachment in the nasopharynx and its uncommon occurrence make it easy to miss during diagnosis. Case presentation We present a case of a 61-year-old male patient with recurrent unilateral epistaxis without any apparent cause. He was diagnosed with leech infestation in the nasopharynx on endoscopic examination. This article reports the management of nasopharyngeal leech infestation and safety measures for this animate foreign body retrieval. Conclusion A vigilant approach, thorough history, and examination are a must. Though leeches are simple to remove most of the time, certain necessary precaution should be kept in mind for better management and prevention of further complications.

scholarly journals Households access to improved drinking water sources and toilet facilities in Ethiopia: a multilevel analysis based on 2016 Ethiopian Demographic and Health Survey

BMJ Open ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. e042071
Author(s):  
Zewudu Andualem ◽  
Henok Dagne ◽  
Zelalem Nigussie Azene ◽  
Asefa Adimasu Taddese ◽  
Baye Dagnew ◽  
...  
Keyword(s):  
Drinking Water ◽  
Health Survey ◽  
Rural Households ◽  
Wealth Index ◽  
Water Sources ◽  
Demographic And Health Survey ◽  
P Value ◽  
Cluster Sampling ◽  
Drinking Water Source ◽  
Drinking Water Sources

ObjectiveThis study aimed to assess households access to improved drinking water sources and sanitation facilities and their associated factors in Ethiopia.DesignCross-sectional study.SettingEthiopia.ParticipantsHousehold heads.Primary outcomesAccess to improved drinking water sources and toilet facilities.MethodsWe conducted an in-depth secondary data analysis of 2016 Ethiopian Demographic and Health Survey. Data from a total of 16 650 households and 645 clusters were included in the analysis. The households were selected using a stratified two-stage cluster sampling technique. Multilevel binary logistic regression analyses were performed to identify factors associated with access to an improved drinking water source and toilet facilities. Adjusted OR with a 95% CI was reported with p value <0.05 was used to declare a significant association between the covariates and the outcome variables.ResultsThe proportions of households’ access to improved sources of drinking water and toilet facilities were 69.94% (95% CI: 69.23% to 70.63%) and 25.36% (95% CI: 24.69% to 26.03%), respectively. Households headed by women and households with a better wealth index were positively associated with access to improved drinking water sources. Whereas rural households, ≥30 min round trip to obtain drinking water and region were factors negatively associated with households access to improved drinking water sources. A higher probability of having access to improved toilet facilities: households with heads who had attained higher education, households having better access to improved sources of drinking water and households with better wealth index. While the following households were less likely to have access to improved toilet facilities: households with heads were widowed, households with four to six members, rural households and region.ConclusionThe study found that the proportions of households’ access to improved drinking water sources and toilet facilities in Ethiopia were relatively low, which demands the need to tailor strategies to increase the coverage of access to improved drinking water sources and toilet facilities.

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