Rn isotope as a tool for monitoring functionality of water wells.

In Sub-Saharan Africa, hand pump-fitted water wells (HPWs) are characterized by poor functionality marked by rapid post-construction decline in yield. A substantial number of the HPWs show a low degree of reliability and poor water quality. Monitoring changes in performance is prerequisite to inform preventive maintenance of the HPWs.

Blended natural and synthetic coagulants for the COD and BOD removal from surface water; optimization by response surface methodology: The case of Gibe river.

A novel wastewater treatment method is presented in this study. It combines natural coagulants derived from watermelon seeds with the commonly used synthetic coagulant alum. This research demonstrates a remarkable synergy between these two coagulants in removing nutrients from Gibe River wastewater.

Water chemistry poses health risks as reliance on groundwater increases: A systematic review of hydrogeochemistry research from Ethiopia and Kenya.

Reliance on groundwater is increasing in Sub-Saharan Africa as development programmes work towards improving water access and strengthening resilience to climate change. In lower-income areas, groundwater supplies are typically installed without water quality treatment infrastructure or services. This practice is underpinned by an assumption that untreated groundwater is typically suitable for drinking due to the relative microbiological safety of groundwater compared to surface water; however, chemistry risks are largely disregarded.

Regional groundwater flow system characterization of volcanic aquifers in upper Awash using multiple approaches, central Ethiopia.

Characterization of the groundwater flow systems is important for sustainable water resource management decision-making. We have used vertical profiles of electrical conductivity (EC) and water temperature taken at 2 m intervals during drilling of 109 boreholes, and samples for stable isotope analysis (O, H) taken from 47 boreholes to characterize groundwater recharge, flow and discharge. Rn measurements and piezometric evidence were used to complement results from the EC and stable isotopes.

Phosphate and Nitrate Removal from Coffee Processing Wastewater Using a Photoelectrochemical Oxidation Process.

Water quality, whether utilized for home, irrigation, or recreational reasons, is crucial for health in both developing and developed countries around the world. For the treatment of nitrate (NO) and phosphate (PO) from coffee processing wastewater, photoelectrochemical oxidation was used. This process is mainly used to destroy pollutants through the production and use of powerful oxidized species such as hydroxyl radical (OH).

Missed antenatal care follow-up and associated factors in Eastern Zone of Tigray, Northern Ethiopia.

Introduction: Focused antenatal care improves the survival and health of the mother as well as the babies. However, there are real challenges in keeping the subsequent antenatal care follow up in Ethiopia. Hence, the aim of this study was to assess missed antenatal care follow up and associated factors in the Eastern zone of Tigray.

Data Descriptor: Daily observations of stable isotope ratios of rainfall in the tropics.

We present precipitation isotope data (δH and δO values) from 19 stations across the tropics collected from 2012 to 2017 under the Coordinated Research Project F31004 sponsored by the International Atomic Energy Agency. Rainfall samples were collected daily and analysed for stable isotopic ratios of oxygen and hydrogen by participating laboratories following a common analytical framework. We also calculated daily mean stratiform rainfall area fractions around each station over an area of 5° x 5° longitude/latitude based on TRMM/GPM satellite data.

Diseases, Injuries, and Risk Factors in Child and Adolescent Health, 1990 to 2017: Findings From the Global Burden of Diseases, Injuries, and Risk Factors 2017 Study.

Importance: Understanding causes and correlates of health loss among children and adolescents can identify areas of success, stagnation, and emerging threats and thereby facilitate effective improvement strategies.

Objective: To estimate mortality and morbidity in children and adolescents from 1990 to 2017 by age and sex in 195 countries and territories.

Design, Setting, And Participants: This study examined levels, trends, and spatiotemporal patterns of cause-specific mortality and nonfatal health outcomes using standardized approaches to data processing and statistical analysis.

Medical professionalism: perspectives of medical students and residents at Ayder Comprehensive and Specialized Hospital, Mekelle, Ethiopia - a cross-sectional study.

Background: Different forms of unprofessionalism in terms of lack of respect, preventable medical errors, inability to work together with colleagues, and discrimination while providing service these days can be explained by traditional perceptions of who is a good doctor and who is not.

Objectives: The aim of this study was to determine the perspective of medical students and residents on medical professionalism.

Methods: This was a cross-sectional study.

Estimating ungauged catchment flows from Lake Tana floodplains, Ethiopia: an isotope hydrological approach.

The isotope balance approach, which used (18)O content of waters, has been used as an independent tool to estimate inflow to Lake Tana of surface water flows from ungauged catchment of Lake Tana (50% of the total area) and evaporative water loss in the vast plains adjoining the lake. Sensitivity analysis has been conducted to investigate the effects of changes in the input parameters on the estimated flux. Surface water inflow from ungauged catchment is determined to be in the order of 1.