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https://www.readbyqxmd.com/read/27914258/centralised-decentralised-or-hybrid-sanitation-systems-economic-evaluation-under-urban-development-uncertainty-and-phased-expansion
#1
Ivar Roefs, Brendo Meulman, Jan H G Vreeburg, Marc Spiller
Sanitation systems are built to be robust, that is, they are dimensioned to cope with population growth and other variability that occurs throughout their lifetime. It was recently shown that building sanitation systems in phases is more cost effective than one robust design. This phasing can take place by building small autonomous decentralised units that operate closer to the actual demand. Research has shown that variability and uncertainty in urban development does affect the cost effectiveness of this approach...
November 23, 2016: Water Research
https://www.readbyqxmd.com/read/27914021/surface-modified-cobalt-ferrite-nanoparticles-for-rapid-capture-detection-and-removal-of-pathogens-a-potential-material-for-water-purification
#2
Raghvendra A Bohara, Nanasaheb D Throat, Nayeem A Mulla, Shivaji H Pawar
Enteric infections resulting from the consumption of contaminated drinking water, inadequate supply of water for personal hygiene, and poor sanitation take a heavy toll worldwide, and developing countries are the major sufferers. Consumption of microbiologically contaminated water leads to diseases such as amoebiasis, cholera, shigellosis, typhoid, and viral infections leading to gastroenteritis and hepatitis B. The present investigation deals with the development of effective method to capture and eliminate microbial contamination of water and improve the quality of water and thus decreasing the contaminated waterborne infections...
December 2, 2016: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/27905971/trends-causes-and-risk-factors-of-mortality-among-children-under-5-in-ethiopia-1990-2013-findings-from-the-global-burden-of-disease-study-2013
#3
Amare Deribew, Gizachew Assefa Tessema, Kebede Deribe, Yohannes Adama Melaku, Yihunie Lakew, Azmeraw T Amare, Semaw F Abera, Mesoud Mohammed, Abiy Hiruye, Efrem Teklay, Awoke Misganaw, Nicholas Kassebaum
BACKGROUND: Ethiopia has made remarkable progress in reducing child mortality over the last two decades. However, the under-5 mortality rate in Ethiopia is still higher than the under-5 mortality rates of several low- and middle-income countries (LMIC). On the other hand, the patterns and causes of child mortality have not been well investigated in Ethiopia. The objective of this study was to investigate the mortality trend, causes of death, and risk factors among children under 5 in Ethiopia during 1990-2013...
November 14, 2016: Population Health Metrics
https://www.readbyqxmd.com/read/27905620/-the-water-supply-of-a-pediatric-hospital-as-a-possible-source-of-an-outbreak-of-diarrhea-due-to-microsporidium-spp-in-immunocompromised-patients
#4
Paulina Coria, Claudia Urízar, Andrea Alba, Isabel Noemí, Anita Pino, José Luis Cerva
INTRODUCTION: The hospital water supply is a reservoir of a variety of potentially pathogenic microorganisms that can particularly affect children and immunocompromised patients. Potentially pathogenic Microsporidium spp. have been identified in water. Microsporidiosis is an emerging parasitic and opportunistic infection in immunocompromised patients. OBJECTIVE AND METHOD: to describe an outbreak of nosocomial diarrhea due to Microsporidium, species Encephalitozoon intestinalis...
August 2016: Revista Chilena de Infectología: órgano Oficial de la Sociedad Chilena de Infectología
https://www.readbyqxmd.com/read/27904080/an-ic-ms-ms-method-for-the-determination-of-1-hydroxyethylidene-1-1-diphosphonic-acid-on-uncooked-foods-treated-with-peracetic-acid-based-sanitizers
#5
Ippei Suzuki, Hiroki Kubota, Takashi Ohtsuki, Chiye Tatebe, Atsuko Tada, Takeo Yano, Hiroshi Akiyama, Kyoko Sato
A rapid, sensitive, and specific analytical method for the determination of 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP) on uncooked foods after treatment with a peracetic acid-based sanitizer (PAS) was developed. The method involves simple sample preparation steps and analysis using ion chromatography (IC) coupled with tandem mass spectrometry (MS/MS). The quantification limits of HEDP on uncooked foods are 0.007 mg/kg for vegetables and fruits and 0.2 mg/kg for meats. The recovery and relative standard deviation (RSD) of HEDP analyses of uncooked foods ranged from 73...
2016: Chemical & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/27898017/assessment-of-macro-level-socioeconomic-factors-that-impact-waterborne-diseases-the-case-of-jordan
#6
John M Polimeni, Ahmad Almalki, Raluca I Iorgulescu, Lucian-Liviu Albu, Wendy M Parker, Ray Chandrasekara
The Hashemite Kingdom of Jordan is an example of a country that suffers from high water scarcity. Additionally, due to the economic drivers in the country, such as phosphate and potash extraction and pharmaceutical production, the little fresh water that remains is generally polluted. The infrastructure, often antiquated in urban areas and non-existent in rural areas, also contributes to poor water conditions and to the spread of waterborne diseases. This paper examines the socioeconomic factors that contribute to diarrhea and hepatitis A on a macro level in Jordan and discusses the public-policies that government officials could use to abate those problems...
November 25, 2016: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/27896606/a-knowledge-ecologies-analysis-of-co-designing-water-and-sanitation-services-in-alaska
#7
Dena Fam, Zoë Sofoulis
Willingness to collaborate across disciplinary boundaries is necessary but not sufficient for project success. This is a case study of a transdisciplinary project whose success was constrained by contextual factors that ultimately favoured technical and scientific forms of knowledge over the cultural intelligence that might ensure technical solutions were socially feasible. In response to Alaskan Water and Sewer Challenge (AWSC), an international team with expertise in engineering, consultative design and public health formed in 2013 to collaborate on a two-year project to design remote area water and sanitation systems in consultation with two native Alaskan communities...
November 28, 2016: Science and Engineering Ethics
https://www.readbyqxmd.com/read/27891065/trends-causes-and-risk-factors-of-mortality-among-children-under-5-in-ethiopia-1990-2013-findings-from-the-global-burden-of-disease-study-2013
#8
Amare Deribew, Gizachew Assefa Tessema, Kebede Deribe, Yohannes Adama Melaku, Yihunie Lakew, Azmeraw T Amare, Semaw F Abera, Mesoud Mohammed, Abiy Hiruye, Efrem Teklay, Awoke Misganaw, Nicholas Kassebaum
BACKGROUND: Ethiopia has made remarkable progress in reducing child mortality over the last two decades. However, the under-5 mortality rate in Ethiopia is still higher than the under-5 mortality rates of several low- and middle-income countries (LMIC). On the other hand, the patterns and causes of child mortality have not been well investigated in Ethiopia. The objective of this study was to investigate the mortality trend, causes of death, and risk factors among children under 5 in Ethiopia during 1990-2013...
2016: Population Health Metrics
https://www.readbyqxmd.com/read/27890583/ailanthusins-a-g-and-nor-lupane-triterpenoids-from-ailanthus-triphysa
#9
Sanit Thongnest, Jutatip Boonsombat, Hunsa Prawat, Chulabhorn Mahidol, Somsak Ruchirawat
Bioactivity-guided chemical investigation of the CH2Cl2 and CH2Cl2MeOH extracts of the stem and stem bark material of Ailanthus tryphysa (Simaroubaceae) led to the isolation of five cycloapotirucallanes, ailanthusins A-E, two malabaricanes, ailanthusins F-G, and one nor-lupane triterpenoid, 29-nor-lup-1-ene-3,20-dione along with twenty known compounds. Their structures were elucidated through the application of extensive spectroscopic methods, and the structure of ailanthusin A was further confirmed by single crystal X-ray analysis...
November 24, 2016: Phytochemistry
https://www.readbyqxmd.com/read/27889149/inactivation-of-salmonella-enterica-in-chicken-feces-on-the-surface-of-eggshells-by-simultaneous-treatments-with-gaseous-chlorine-dioxide-and-mild-wet-heat
#10
Sunhyung Park, Larry R Beuchat, Hoikyung Kim, Jee-Hoon Ryu
The aim of this study was to investigate the lethal effects of simultaneous treatments with gaseous chlorine dioxide (ClO2) and mild wet heat (55 °C at 100% relative humidity [RH]) on Salmonella enterica in chicken feces on the surface of eggshells. Gaseous ClO2 production decreased significantly (P ≤ 0.05) as the RH (23, 43, 68, 85, and 100%) at 25 °C was increased. The lethality of gaseous ClO2 against S. enterica in feces on eggshells increased significantly (P ≤ 0.05) as RH increased. For example, when treated with gaseous ClO2 at 85 and 100% RH at 25 °C, S...
April 2017: Food Microbiology
https://www.readbyqxmd.com/read/27888775/cost-energy-global-warming-eutrophication-and-local-human-health-impacts-of-community-water-and-sanitation-service-options
#11
Mary E Schoen, Xiaobo Xue, Alison Wood, Troy R Hawkins, Jay Garland, Nicholas J Ashbolt
We compared water and sanitation system options for a coastal community across selected sustainability metrics, including environmental impact (i.e., life cycle eutrophication potential, energy consumption, and global warming potential), equivalent annual cost, and local human health impact. We computed normalized metric scores, which we used to discuss the options' strengths and weaknesses, and conducted sensitivity analysis of the scores to changes in variable and uncertain input parameters. The alternative systems, which combined centralized drinking water with sanitation services based on the concepts of energy and nutrient recovery as well as on-site water reuse, had reduced environmental and local human health impacts and costs than the conventional, centralized option...
November 16, 2016: Water Research
https://www.readbyqxmd.com/read/27888349/final-irrigation-protocols-may-affect-intraradicular-dentin-ultrastructure
#12
Márcia Helena Wagner, Ricardo Abreu da Rosa, José Antonio Poli de Figueiredo, Marco Antonio Húngaro Duarte, Jefferson Ricardo Pereira, Marcus Vinicius Reis Só
OBJECTIVES: The aim of this study was to evaluate the effect of different irrigation protocols on the root dentin structure using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). MATERIALS AND METHODS: Thirty-nine lower bovine incisors were hemisected longitudinally and randomly divided into 13 groups (n = 3). After the root halves were reassembled, it was applied a specific irrigation protocol for each group, as following: G1, distilled water (control); G2, 0...
November 25, 2016: Clinical Oral Investigations
https://www.readbyqxmd.com/read/27887586/hepatitis-e-virus-seroepidemiology-a-post-earthquake-study-among-blood-donors-in-nepal
#13
Ashish C Shrestha, Robert L P Flower, Clive R Seed, Manita Rajkarnikar, Shrawan K Shrestha, Uru Thapa, Veronica C Hoad, Helen M Faddy
BACKGROUND: As one of the causative agents of viral hepatitis, hepatitis E virus (HEV) has gained public health attention globally. HEV epidemics occur in developing countries, associated with faecal contamination of water and poor sanitation. In industrialised nations, HEV infections are associated with travel to countries endemic for HEV, however, autochthonous infections, mainly through zoonotic transmission, are increasingly being reported. HEV can also be transmitted by blood transfusion...
November 25, 2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27881115/intestinal-polyparasitism-with-special-emphasis-to-soil-transmitted-helminths-among-residents-around-gilgel-gibe-dam-southwest-ethiopia-a-community-based-survey
#14
Zeleke Mekonnen, Sultan Suleman, Abdissa Biruksew, Tamirat Tefera, Legese Chelkeba
BACKGROUND: One third of the world population is estimated to be infected with intestinal parasites. The most affected people are children and the poor people living in tropics and subtropics. Polyparasitism (the concurrent infection with multiple intestinal parasite species) is found to be the norm among the same population although accurate estimate of its magnitude is unknown. It was found that polyparasitism might have a greater impact on morbidity than single species infection which might also increase susceptibility to other infections...
November 23, 2016: BMC Public Health
https://www.readbyqxmd.com/read/27876959/a-rare-cause-of-dysphagia-pharyngeal-ascariasis
#15
Maryam Hajizadeh, Mohammad Taghi Rahimi, Adel Spotin, Ehsan Ahmadpour
Ascaris lumbricoides infection distributed widely in tropical and subtropical areas, especially in the developing countries and affects more than one billion of people. Ascariasis commonly has higher infection rates compared to other parasite species and because of poor sanitation the parasite can be seen in 100 % of the population. A. lumbricoides depending on the provocation by anesthetic agents or intestines becomes hostile, such as with inflammation and obstruction, may cause migration and varies complications such as coming up to the mouth or blocking some ducts...
December 2016: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/27876910/low-sensitivity-of-the-immunocardstat-%C3%A2-crypto-giardia-rapid-assay-test-for-the-detection-of-giardia-and-cryptosporidium-in-fecal-samples-from-children-living-in-libreville-central-africa
#16
M K Bouyou-Akotet, M Owono-Medang, M N Moussavou-Boussougou, M Mabika Mamfoumbi, R Mintsa-Nguema, D P Mawili-Mboumba, M Kombila
Giardiasis and cryptosporidiosis are now recognized as neglected tropical parasitic diseases. The risk of their dissemination  in developing countries, such as Gabon, is increasing, due to urban crowding and poor sanitation. Accurate, simple and rapid diagnosis tools are thus necessary for the estimation of their real burden. The aim of this study was to evaluate the performances of the ImmunocardSTAT(®)Crypto/Giardia Rapid Assay test for the detection of Cryptosporidium (C.) spp. and Giardia (G.) duodenalis in children living in Libreville, Gabon...
December 2016: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/27872656/nutritional-situation-among-syrian-refugees-hosted-in-iraq-jordan-and-lebanon-cross-sectional-surveys
#17
S M Moazzem Hossain, Eva Leidman, James Kingori, Abdullah Al Harun, Oleg O Bilukha
BACKGROUND: Ongoing armed conflict in Syria has caused large scale displacement. Approximately half of the population of Syria have been displaced including the millions living as refugees in neighboring countries. We sought to assess the health and nutrition of Syrian refugees affected by the conflict. METHODS: Representative cross-sectional surveys of Syrian refugees were conducted between October 2 and November 30, 2013 in Lebanon, April 12 and May 1, 2014 in Jordan, and May 20 and 31, 2013 in Iraq...
2016: Conflict and Health
https://www.readbyqxmd.com/read/27866386/hand-hygiene-program-decreases-school-absenteeism-due-to-upper-respiratory-infections
#18
Ernestina Azor-Martinez, Elena Cobos-Carrascosa, Maria Luisa Seijas-Vazquez, Carmen Fernández-Sánchez, Jenna M Strizzi, Pilar Torres-Alegre, Joaquin Santisteban-Martínez, Francisco Gimenez-Sanchez
BACKGROUND: We assessed the effectiveness of a handwashing program using hand sanitizer to prevent school absenteeism due to upper respiratory infections (URIs). METHODS: This was a randomized, controlled, and open study on a sample of 1341 children 4-12 years old, attending 5 state schools in Almería (Spain), with an 8-month follow-up. The experimental group (EG) washed their hands with soap and water, together with using hand sanitizer, and the control group followed their usual handwashing procedures...
December 2016: Journal of School Health
https://www.readbyqxmd.com/read/27865730/overview-of-the-state-of-the-art-of-constructed-wetlands-for-decentralized-wastewater-management-in-brazil
#19
REVIEW
A I Machado, M Beretta, R Fragoso, E Duarte
Conventional wastewater treatment plants (WWTPs) commonly require large capital investments as well as operation and maintenance costs. Constructed wetlands (CWs) appear as a cost-effective treatment, since they can remove a broad range of contaminants by a combination of physical, chemical and biological processes with a low cost. Therefore, CWs can be successfully applied for decentralized wastewater treatment in regions with low population density and/or with large land availability as Brazil. The present work provides a review of thirty nine studies developed on CWs implemented in Brazil to remove wastewater contaminants...
November 16, 2016: Journal of Environmental Management
https://www.readbyqxmd.com/read/27864517/an-extensive-burden-of-giardiasis-associated-with-intestinal-schistosomiasis-and-anaemia-in-school-children-on-the-shoreline-of-lake-albert-uganda
#20
Hajri Al-Shehri, Michelle C Stanton, James E LaCourse, Aaron Atuhaire, Moses Arinaitwe, Aida Wamboko, Moses Adriko, Narcis B Kabatereine, J Russell Stothard
BACKGROUND: Water-borne parasitic diseases associated with poverty still blight the lives of African school children. In Uganda, intestinal schistosomiasis is still common along the shoreline of Lake Albert, despite ongoing control, and co-infection with giardiasis and malaria is poorly described. To shed light on putative interactions between diseases, a prospective cross-sectional parasitological survey was undertaken in five primary schools. METHODS: Stool samples from 254 school children, aged 5-10 years, were examined by microscopy and rapid diagnostic tests (RDTs), with additional real-time PCR assays for detection of Giardia DNA...
November 17, 2016: Transactions of the Royal Society of Tropical Medicine and Hygiene
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