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https://www.readbyqxmd.com/read/28935374/solidification-stabilization-of-asr-fly-ash-using-thiomer-material-optimization-of-compressive-strength-and-heavy-metals-leaching
#1
Jin Woong Baek, Angelo Earvin Sy Choi, Hung Suck Park
Optimization studies of a novel and eco-friendly construction material, Thiomer, was investigated in the solidification/stabilization of automobile shredded residue (ASR) fly ash. A D-optimal mixture design was used to evaluate and optimize maximum compressive strength and heavy metals leaching by varying Thiomer (20-40wt%), ASR fly ash (30-50wt%) and sand (20-40wt%). The analysis of variance was utilized to determine the level of significance of each process parameters and interactions. The microstructure of the solidified materials was taken from a field emission-scanning electron microscopy and energy dispersive X-ray spectroscopy that confirmed successful Thiomer solidified ASR fly ash due to reduced pores and gaps in comparison with an untreated ASR fly ash...
September 18, 2017: Waste Management
https://www.readbyqxmd.com/read/28912782/the-sand-fly-salivary-protein-lufaxin-inhibits-the-early-steps-of-the-alternative-pathway-of-complement-by-direct-binding-to-the-proconvertase-c3b-b
#2
Antonio F Mendes-Sousa, Vladimir Fazito do Vale, Naylene C S Silva, Anderson B Guimaraes-Costa, Marcos H Pereira, Mauricio R V Sant'Anna, Fabiano Oliveira, Shaden Kamhawi, José M C Ribeiro, John F Andersen, Jesus G Valenzuela, Ricardo N Araujo
Saliva of the blood feeding sand fly Lutzomyia longipalpis was previously shown to inhibit the alternative pathway (AP) of the complement system. Here, we have identified Lufaxin, a protein component in saliva, as the inhibitor of the AP. Lufaxin inhibited the deposition of C3b, Bb, Properdin, C5b, and C9b on agarose-coated plates in a dose-dependent manner. It also inhibited the activation of factor B in normal serum, but had no effect on the components of the membrane attack complex. Surface plasmon resonance (SPR) experiments demonstrated that Lufaxin stabilizes the C3b-B proconvertase complex when passed over a C3b surface in combination with factor B...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28873425/control-of-phlebotomus-argentipes-diptera-psychodidae-sand-fly-in-bangladesh-a-cluster-randomized-controlled-trial
#3
Rajib Chowdhury, Shyla Faria, M Mamun Huda, Vashkar Chowdhury, Narayan Prosad Maheswary, Dinesh Mondal, Shireen Akhter, Sakila Akter, Rajaul Karim Khan, Shah Golam Nabi, Axel Kroeger, Daniel Argaw, Jorge Alvar, Aditya Prasad Dash, Qamar Banu
BACKGROUND: A number of studies on visceral leishmaniasis (VL) vector control have been conducted during the past decade, sometimes came to very different conclusion. The present study on a large sample investigated different options which are partially unexplored including: (1) indoor residual spraying (IRS) with alpha cypermethrin 5WP; (2) long lasting insecticide impregnated bed-net (LLIN); (3) impregnation of local bed-nets with slow release insecticide K-O TAB 1-2-3 (KOTAB); (4) insecticide spraying in potential breeding sites outside of house using chlorpyrifos 20EC (OUT) and different combinations of the above...
September 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28870535/historical-overview-of-infantile-visceral-leishmaniasis-in-el-agamy-alexandria-egypt
#4
REVIEW
Hala A Kassem, John C Beier, Bahira M El Sawaf
Infantile visceral leishmaniasis (IVL) is considered a rare and neglected disease in Egypt. An outbreak of the disease in El Agamy, Alexandria occurred in 1982 although the disease was previously reported 80 years before. Epidemiological and entomological studies were conducted ever since the 1982 outbreak to identify human cases, the parasite, reservoir host and the sand fly vector. Leishmania infantum MON-98, a new and unique zymodeme, was responsible of the disease. Stray dogs acted as the reservoir host and Phlebotomus langeroni was the proven vector...
September 8, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28870534/assessing-the-insecticide-susceptibility-status-of-field-population-of-phlebotomus-papatasi-diptera-psychodidae-in-a-hyperendemic-area-of-zoonotic-cutaneous-leishmaniasis-in-esfahan-province-central-iran
#5
Leila Shirani-Bidabadi, Alireza Zahraei-Ramazani, Mohammad Reza Yaghoobi-Ershadi, Yavar Rassi, Amir Ahmad Akhavan, Mohammad Ali Oshaghi, Ahmad Ali Enayati, Zahra Saeidi, Reza Jafari, Hassan Vatandoost
Leishmaniasis is a Neglected Tropical Disease (NTD) and emerging parasitic infection that affect mainly poor regions around the world. This study aimed to determine the baseline susceptibility of Phlebotomus papatasi to commonly used insecticides in a hyper endemic area using WHO standard procedure in central Iran. A total of 4-5 replicates containing 120-200 sand flies were used for each insecticide. Baseline susceptibility to DDT and pyrethroids was assessed on 5326 specimens collected from the study area...
September 8, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28851425/direct-evidence-for-an-expanded-circulation-area-of-the-recently-identified-balkan-virus-sandfly-fever-naples-virus-species-in-several-countries-of-the-balkan-archipelago
#6
Nazli Ayhan, Bulent Alten, Vladimir Ivovic, Vit Dvořák, Franjo Martinkovic, Jasmin Omeragic, Jovana Stefanovska, Dusan Petric, Slavica Vaselek, Devrim Baymak, Ozge E Kasap, Petr Volf, Remi N Charrel
BACKGROUND: Recently, Balkan virus (BALKV, family Phenuiviridae, genus Phlebovirus) was discovered in sand flies collected in Albania and genetically characterised as a member of the Sandfly fever Naples species complex. To gain knowledge concerning the geographical area where exposure to BALKV exists, entomological surveys were conducted in 2014 and 2015, in Croatia, Bosnia and Herzegovina (BH), Kosovo, Republic of Macedonia and Serbia. RESULTS: A total of 2830 sand flies were trapped during 2014 and 2015 campaigns, and organised as 263 pools...
August 29, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28851424/sand-fly-diptera-psychodidae-phlebotominae-abundance-and-diversity-in-areas-affected-by-the-s%C3%A3-o-francisco-river-transposition-project-in-cear%C3%A3-state-brazil
#7
Júlia Dos Santos Silva, Lindemberg Caranha, Fabrício Kássio Moura Santos, Antonio Pereira Dos Santos, Luiz Osvaldo Rodrigues da Silva, Elizabeth Ferreira Rangel
BACKGROUND: Entomological surveillance of sand fly vectors was carried out to support leishmaniasis prevention and control measures in areas affected by the São Francisco River Transposition Project. METHODS: Sand flies were collected monthly between May 2011 and December 2014 in seven municipalities: Missão Velha, Brejo Santo, Lavras da Mangabeira, Iguatu, Mauriti, Jaguaribe and Jaguaretama, in dwellings, peridomicile and forest areas for three consecutive days, for a period of 12 h each day (18:00 to 06:00 h)...
August 29, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28807304/association-between-mast-cells-tissue-remodelation-and-parasite-burden-in-the-skin-of-dogs-with-visceral-leishmaniasis
#8
Jamille Mirelle de Oliveira Cardoso, Henrique Gama Ker, Rodrigo Dian de Oliveira Aguiar-Soares, Nádia das Dores Moreira, Fernando Augusto Siqueira Mathias, Levi Eduardo Soares Reis, Bruno Mendes Roatt, Paula Melo de Abreu Vieira, Wendel Coura-Vital, Cláudia Martins Carneiro, Alexandre Barbosa Reis
Canine visceral leishmaniosis (CVL) is a zoonosis of major public health impact caused by organisms of the genus Leishmania which is transmitted to human and animals by phlebotomine sand flies. The skin is the first point of contact with Leishmania parasites for sandy fly vectors and it is considered an important reservoir compartment in infected dogs. The aim of this study was to determine the main histophatologic alterations in ear skin of dogs naturally infected by Leishmania infantum with different clinical status and different degrees of parasitism...
August 30, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28796786/phlebotomine-sand-fly-borne-pathogens-in-the-mediterranean-basin-human-leishmaniasis-and-phlebovirus-infections
#9
REVIEW
Martina Moriconi, Gianluca Rugna, Mattia Calzolari, Romeo Bellini, Alessandro Albieri, Paola Angelini, Roberto Cagarelli, Maria P Landini, Remi N Charrel, Stefania Varani
Pathogens transmitted to humans by phlebotomine sand flies are neglected, as they cause infectious diseases that are not on the priority list of national and international public health systems. However, the infections caused by protozoa of the Leishmania genus and viruses belonging to the Phlebovirus genus (family Phenuiviridae)-the most significant group of viruses transmitted by sand flies-have a relevant role for human pathology. These infections are emerging in the Mediterranean region and will likely spread in forthcoming decades, posing a complex threat to human health...
August 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28773986/nanoindentation-characterization-of-a-ternary-clay-based-composite-used-in-ancient-chinese-construction
#10
Dongwei Hou, Guoping Zhang, Rohit Raj Pant, Jack S Shen, Mingming Liu, Hao Luo
Ternary clay-based composite material (TCC), composed of lime, clay and sand, and usually modified with sticky rice and other organic compounds as additives, was widely used historically in Chinese construction and buildings due to its high mechanical performance. In this study, to gain an insight into the micromechanical mechanism of this cementitious material, the nanomechanical properties and volume fraction of mechanically different phases of the binder matrix are derived from the analysis of grid nanoindentation tests...
October 26, 2016: Materials
https://www.readbyqxmd.com/read/28773861/experimental-study-on-full-scale-beams-made-by-reinforced-alkali-activated-concrete-undergoing-flexure
#11
Linda Monfardini, Fausto Minelli
Alkali Activated Concrete (AAC) is an alternative kind of concrete that uses fly ash as a total replacement of Portland cement. Fly ash combined with alkaline solution and cured at high temperature reacts to form a binder. Four point bending tests on two full scale beams made with AAC are described in this paper. Companion small material specimens were also casted with the aim of properly characterizing this new tailored material. The beam's length was 5000 mm and the cross section was 200 mm × 300 mm. The AAC consisted of fly ash, water, sand 0-4 mm and coarse aggregate 6-10 mm; and the alkaline solution consisted of sodium hydroxide mixed with sodium silicate...
August 30, 2016: Materials
https://www.readbyqxmd.com/read/28773849/combined-effects-of-non-conforming-fly-ash-and-recycled-masonry-aggregates-on-mortar-properties
#12
Ana Isabel Torres-Gómez, Enrique F Ledesma, Rocio Otero, José Maria Fernández, José Ramón Jiménez, Jorge de Brito
This work evaluates the effects of using non-conforming fly ash (Nc-FA) generated in a thermoelectric power plant as filler material for mortars made with natural sand (NA) and recycled sand from masonry waste (FRMA). The incorporation of powdered recycled masonry filler (R-MF) is also tested as an alternative to siliceous filler (Si-F). Three families of mortars were designed to study: the effect of replacing Si-F with Nc-FA on mortars made with NA; the effect of replacing Si-F with Nc-FA on mortars made with 50% of NA and 50% of FRMA; and the effect of replacing Si-F with R-MF on mortars made with NA and FRMA...
August 25, 2016: Materials
https://www.readbyqxmd.com/read/28764772/phlebotomine-sand-fly-survey-in-the-focus-of-leishmaniasis-in-madrid-spain-2012-2014-seasonal-dynamics-leishmania-infantum-infection-rates-and-blood-meal-preferences
#13
Estela González, Maribel Jiménez, Sonia Hernández, Inés Martín-Martín, Ricardo Molina
BACKGROUND: An unusual increase of human leishmaniasis cases due to Leishmania infantum is occurring in an urban area of southwestern Madrid, Spain, since 2010. Entomological surveys have shown that Phlebotomus perniciosus is the only potential vector. Direct xenodiagnosis in hares (Lepus granatensis) and rabbits (Oryctolagus cuniculus) collected in the focus area proved that they can transmit parasites to colonized P. perniciosus. Isolates were characterized as L. infantum. The aim of the present work was to conduct a comprehensive study of sand flies in the outbreak area, with special emphasis on P...
August 1, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28742133/a-putative-atp-gtp-binding-protein-affects-leishmania-mexicana-growth-in-insect-vectors-and-vertebrate-hosts
#14
Aygul Ishemgulova, Natalya Kraeva, Jana Hlaváčová, Sara L Zimmer, Anzhelika Butenko, Lucie Podešvová, Tereza Leštinová, Julius Lukeš, Alexei Kostygov, Jan Votýpka, Petr Volf, Vyacheslav Yurchenko
BACKGROUND: Leishmania virulence factors responsible for the complicated epidemiology of the various leishmaniases remain mainly unidentified. This study is a characterization of a gene previously identified as upregulated in two of three overlapping datasets containing putative factors important for Leishmania's ability to establish mammalian intracellular infection and to colonize the gut of an insect vector. METHODOLOGY/PRINCIPAL FINDINGS: The investigated gene encodes ATP/GTP binding motif-containing protein related to Leishmania development 1 (ALD1), a cytosolic protein that contains a cryptic ATP/GTP binding P-loop...
July 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28712974/diversity-and-altitudinal-distribution-of-phlebotomine-sand-flies-diptera-psychodidae-in-visceral-leishmaniasis-endemic-areas-of-northwest-ethiopia
#15
Solomon Yared, Araya Gebresilassie, Essayas Akililu, Kebede Deribe, Meshesha Balkew, Alon Warburg, Asrat Hailu, Teshome Gebre-Michael
BACKGROUND: The Leishmaniases are caused by the protozoan parasites of the genus Leishmania and are transmitted to humans by the bite of infected female phlebotomine sand flies. Both visceral and cutaneous leishmaniases are widely distributed in different parts of Ethiopia. The aim of this study was to determine the diversity and altitudinal distribution of phlebotomine sand flies from Kafta Humera to Gondar town in northwest Ethiopia. METHODS: Seven localities were selected with distinct altitudinal variations between 550m above sea level (m a...
July 13, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28707235/adsorptive-removal-of-five-heavy-metals-from-water-using-blast-furnace-slag-and-fly-ash
#16
Thuy Chung Nguyen, Paripurnanda Loganathan, Tien Vinh Nguyen, Jaya Kandasamy, Ravi Naidu, Saravanamuthu Vigneswaran
Heavy metals can be serious pollutants of natural water bodies causing health risks to humans and aquatic organisms. The purpose of this study was to investigate the removal of five heavy metals from water by adsorption onto an iron industry blast furnace slag waste (point of zero charge (PZC) pH 6.0; main constituents, Ca and Fe) and a coal industry fly ash waste (PZC 3.0; main constituents, Si and Al). Batch study revealed that rising pH increased the adsorption of all metals with an abrupt increase at pH 4...
July 13, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28705610/breeding-protocol-for-the-sand-fly-nyssomyia-neivai-diptera-psychodidae-in-laboratory-conditions
#17
Thais Marchi Goulart, Flávia Benini da Rocha Silva, Vicente Estevam Machado, Wanderson Henrique Cruz Oliveira, Camila Feitosa de Castro, Marili Villa Nova Rodrigues, Mara Cristina Pinto
The information in this protocol covers from the basic steps and material necessary to start a sand fly colony up to the specific details which are important to the success of a Nyssomyia neivai colony. The greatest problems in our colony of Ny. neivai were solved with specific care, for instance, using vermiculite and an adequate number of adults in oviposition containers; the control of fungus with the exact amount of diet for the larvae and humidity control; a second blood meal for females and control of the number of times animals are used for blood meals...
October 2017: Acta Tropica
https://www.readbyqxmd.com/read/28704370/insights-into-the-sand-fly-saliva-blood-feeding-and-immune-interactions-between-sand-flies-hosts-and-leishmania
#18
REVIEW
Tereza Lestinova, Iva Rohousova, Michal Sima, Camila I de Oliveira, Petr Volf
BACKGROUND: Leishmaniases are parasitic diseases present worldwide that are transmitted to the vertebrate host by the bite of an infected sand fly during a blood feeding. Phlebotomine sand flies inoculate into the mammalian host Leishmania parasites embedded in promastigote secretory gel (PSG) with saliva, which is composed of a diverse group of molecules with pharmacological and immunomodulatory properties. METHODS AND FINDINGS: In this review, we focus on 3 main aspects of sand fly salivary molecules: (1) structure and composition of salivary glands, including the properties of salivary molecules related to hemostasis and blood feeding, (2) immunomodulatory properties of salivary molecules and the diverse impacts of these molecules on leishmaniasis, ranging from disease exacerbation to vaccine development, and (3) use of salivary molecules for field applications, including monitoring host exposure to sand flies and the risk of Leishmania transmission...
July 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28695834/sand-flies-and-their-control-methods
#19
Hüseyin Çetin, Yusuf Özbel
The main aim of managing arthropod vectors that carry the disease agents is interrupting the infection cycle. Therefore, the management of the disease implies that all precautions related to all elements (i.e., human, arthropod vector, and reservoir) in the infection cycle need to be taken. There are important points that need to be considered while dealing with sand flies (Diptera: Psychodidae: Phlebotominae), which in many regions worldwide, particularly in tropical and subtropical areas, are vectors of diseases such as leishmaniasis and sand fly fever and are the arthropods of the infection cycle...
June 2017: Türkiye Parazitolojii Dergisi
https://www.readbyqxmd.com/read/28686398/-leishmaniasis-an-infection-of-travellers-and-migrants
#20
Lena Jessen, Benoît Bard, Xavier Grenon, Frank Bally
Leishmaniasis is an infection of the tropical to temperate zone, occasionally imported in our regions by travellers and migrants. Leishmania parasites are transmitted by the sting of a sand fly, Phlebotomus or Lutzomyia, and causes two clinical syndromes with either cutaneous, also mucosal, or disseminated involvement. Clinical suspicion needs a confirmation by the detection of the parasite. The treatment is adapted to the patient, the clinical presentation, the region, the species and the availability. Cutaneous leishmaniasis can be observed only or treated by topical or systemic regimens...
October 12, 2016: Revue Médicale Suisse
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