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https://www.readbyqxmd.com/read/28334551/using-micro-patterned-surfaces-to-inhibit-settlement-and-biofilm-formation-by-bacillus-subtilis
#1
Siyuan Chang, Xiaodong Chen, Shuo Jiang, Jinchun Chen, Lin Shi
Biofilm is a biological complex caused by bacteria settlement to the substrates, their subsequent reproduction and secretion. This phenomena reduce heat transfer efficiency and cause significant losses in treated sewage heat recovering systems. This paper describes a physical approach to inhibit the bacteria settlement and biofilm formation by Bacillus subtilis, which is the dominant genera in the treated sewage. Here, the micro-patterned surfaces with different characteristics (stripe and cube) and dimensions (1 μm to 100 μm) were fabricated as surfaces of interest...
March 23, 2017: Canadian Journal of Microbiology
https://www.readbyqxmd.com/read/28331047/ascension-island-a-survey-to-assess-the-presence-of-zika-virus-vectors
#2
G Bullivant, A F Martinou
BACKGROUND AND AIM: Following concerns regarding the spread of Zika virus, Joint Services Health Unit (Cyprus) were tasked to carry out a mosquito survey on the Ascension Island, South Atlantic. This was to determine if vectors of the virus such as Aedes aegypti and Aedes albopictus were introduced and established on the Island. METHODS: An extensive survey of residential areas and natural habitats was initiated in order to collect mosquito larvae and adults by methods such as larval sampling, adult trapping and human landing catches...
March 22, 2017: Journal of the Royal Army Medical Corps
https://www.readbyqxmd.com/read/28329141/frequent-spread-of-plasmodium-vivax-malaria-maintains-high-genetic-diversity-at-the-myanmar-china-border-without-distance-and-landscape-barriers
#3
Eugenia Lo, Nancy Lam, Elizabeth Hemming-Schroeder, Jennifer Nguyen, Guofa Zhou, Ming-Chieh Lee, Zhaoqing Yang, Liwang Cui, Guiyun Yan
Background.: In Myanmar, civil unrest and the establishment of internally displaced persons (IDP) settlements along the Myanmar-China border have impacted malaria transmission. Methods.: Microsatellite markers were used to examine source-sink dynamics for Plasmodium vivax between IDP and surrounding villages in the border region. Genotypic structure and diversity were compared across the three years following the establishment of IDP in order to infer demographic history...
March 3, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28327413/domestic-dogs-as-reservoir-hosts-for-leishmania-donovani-in-the-southernmost-western-ghats-in-india
#4
P Jambulingam, N Pradeep Kumar, S Nandakumar, K P Paily, R Srinivasan
The peripheral blood samples from domestic dogs (n=47) and wild rats (n=25) in the Kani Tribe settlements, located southernmost part of the Western Ghats, Thiruvananthapuram district, Kerala, India were examined for Leishmania infection. This area is known for cases of leishmaniasis with cutaneous manifestations and sandfly abundance. The tribes domesticate dogs to protect them from untoward activities of wild animals. Leishmania donovani parasite DNA was detected only from 6.4% (n=3) of the blood samples collected from the domestic dogs by amplification of the diagnostic kinetoplast mini-circle DNA and PCR-RFLP analysis of the UTR region of heat shock protein 70 (hsp70) gene...
March 18, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28326841/a-new-iridoid-glycoside-and-a-new-cinnamoyl-glycoside-from-scrophularia-ningpoensis-hemsl
#5
Jun Zhang, Fanny C F Ip, Yan Liang, Nancy Y Ip, Ba-Lian Zhong, Chun-Wang Lai, Shi-Hai Xu
A new iridoid glycoside, namely 8-O-(threo-2, 3-dihydroxyl-3-phenyl-propionoyl)-harpagide (1), along with a new cinnamoyl glycoside named as cis-sibirioside A (2), were isolated from Scrophularia ningpoensis Hemsl. Their chemical structures were completely established by spectroscopic methods and comparison with related literatures. Compound 1 exhibited moderate antifouling effect against the settlement of Balanus amphitrite larvae with IC50 being 13.5 μg/mL and LC50 > 25 μg/mL.
March 22, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28326164/ptsd-symptom-severity-relates-to-cognitive-and-psycho-social-dysfunctioning-a-study-with-congolese-refugees-in-uganda
#6
Herbert E Ainamani, Thomas Elbert, David K Olema, Tobias Hecker
Background: In the ongoing conflict in the Democratic Republic of the Congo (DRC), civilians have been heavily exposed to traumatic stressors. Traumatizing experiences cumulatively heighten the risk for trauma-related disorders, and with it affect cognitive and psycho-social functioning. Objectives: We aimed at investigating the association between trauma-related disorders and cognitive and psycho-social functioning and hypothesized that PTSD symptom severity would negatively correlate with executive functioning, working memory and psycho-social functioning in everyday life...
2017: European Journal of Psychotraumatology
https://www.readbyqxmd.com/read/28325705/biochemical-hydrological-and-mechanical-behaviors-of-high-food-waste-content-msw-landfill-preliminary-findings-from-a-large-scale-experiment
#7
Liang-Tong Zhan, Hui Xu, Yun-Min Chen, Fan Lü, Ji-Wu Lan, Li-Min Shao, Wei-An Lin, Pin-Jing He
A large-scale bioreactor experiment lasting for 2years was presented in this paper to investigate the biochemical, hydrological and mechanical behaviors of high food waste content (HFWC) MSW. The experimental cell was 5m in length, 5m in width and 7.5m in depth, filled with unprocessed HFWC-MSWs of 91.3 tons. In the experiment, a surcharge loading of 33.4kPa was applied on waste surface, mature leachate refilling and warm leachate recirculation were performed to improve the degradation process. In this paper, the measurements of leachate quantity, leachate level, leachate biochemistry, gas composition, waste temperature, earth pressure and waste settlement were presented, and the following observations were made: (1) 26...
March 18, 2017: Waste Management
https://www.readbyqxmd.com/read/28323065/the-impact-of-fecal-sample-processing-on-prevalence-estimates-for-antibiotic-resistant-escherichia-coli
#8
Sylvia Omulo, Eric T Lofgren, Maina Mugoh, Moshe Alando, Joshua Obiya, Korir Kipyegon, Gilbert Kikwai, Wilson Gumbi, Samuel Kariuki, Douglas R Call
Investigators often rely on studies of Escherichia coli to characterize the burden of antibiotic resistance in a clinical or community setting. To determine if prevalence estimates for antibiotic resistance are sensitive to sample handling and interpretive criteria, we collected presumptive E. coli isolates (24 or 95 per stool sample) from a community in an urban informal settlement in Kenya. Isolates were tested for susceptibility to nine antibiotics using agar breakpoint assays and results were analyzed using generalized linear mixed models...
March 18, 2017: Journal of Microbiological Methods
https://www.readbyqxmd.com/read/28322629/promoting-the-wellbeing-of-lesbian-gay-bisexual-and-transgender-forced-migrants-in-canada-providers-perspectives
#9
Sarilee Kahn, Edward Alessi, Leah Woolner, Hanna Kim, Christina Olivieri
Researchers are beginning to document the experiences of lesbian, gay, bisexual and transgender (LGBT) forced migrants in settlement. However, studies exploring the perceptions of service providers working with this vulnerable population are limited. These may shed light on the challenges of meeting the needs of LGBT forced migrants, especially mental health issues and problems. This qualitative study elicited the views of 22 Canadian service providers, including advocates, lawyers and mental health practitioners, who serve LGBT forced migrants...
March 21, 2017: Culture, Health & Sexuality
https://www.readbyqxmd.com/read/28319716/multiple-stressors-in-sediments-impact-adjacent-hard-substrate-habitats-and-across-biological-domains
#10
Jasmin C Lawes, Katherine A Dafforn, Graeme F Clark, Mark V Brown, Emma L Johnston
Coastal systems are increasingly impacted by human activities. While the direct effects of individual contaminants have been investigated, the potential for multiple contaminants to impact adjacent hard substrate habitats is poorly understood. Sediment-bound contaminants pose a risk to water column organisms through resuspension and the fluxing of dissolved nutrients and metals. This study experimentally manipulated contaminated coastal sediments in mesocosms with additions of a common fertiliser to investigate the impact on both bacterial biofilms and macrofouling communities on nearby hard substrates...
March 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28314190/bothrosome-formation-in-schizochytrium-aggregatum-labyrinthulomycetes-stramenopiles-during-zoospore-settlement
#11
Izumi Iwata, Kei Kimura, Yuji Tomaru, Taizo Motomura, Kanae Koike, Kazuhiko Koike, Daiske Honda
Labyrinthulomycetes are characterized by the presence of ectoplasmic nets originating from an organelle known as the bothrosome, whose evolutionary origin is unclear. To address this issue, we investigated the developmental process from a zoospore to a vegetative cell in Schizochytrium aggregatum. After disappearance of the flagellum during zoospore settlement, the bothrosome emerged at the anterior-ventral pole of the cells. A new Golgi body also appeared at this stage, and the bothrosome was positioned close to both the new and the old Golgi bodies...
December 14, 2016: Protist
https://www.readbyqxmd.com/read/28303867/-organization-and-results-of-surgical-care-for-ulcerative-gastroduodenal-bleeding-in-the-hospitals-of-central-federal-district
#12
V A Kubyshkin, V P Sazhin, A V Fedorov, G A Krivtsov, I V Sazhin
AIM: To present treatment of 52 149 patients with ulcerative gastroduodenal bleeding (UGDB) who were treated in different regions of Central Federal District (CFD) for the period 2011-2014. It is noted that UGDB incidence per 100 thousands is increased proportionally from 32.9 to 77.8 according to population less than 20 and over 100 thousands, respectively. In hospitals of small and medium settlements the number of UGDB patients without surgery reaches 81.6 and 81.1%, the number of operated patients - 18...
2017: Khirurgiia
https://www.readbyqxmd.com/read/28303521/assessing-the-habitat-suitability-of-agricultural-landscapes-for-characteristic-breeding-bird-guilds-using-landscape-metrics
#13
Friederike Borges, Michael Glemnitz, Alfred Schultz, Ulrich Stachow
Many of the processes behind the decline of farmland birds can be related to modifications in landscape structure (composition and configuration), which can partly be expressed quantitatively with measurable or computable indices, i.e. landscape metrics. This paper aims to identify statistical relationships between the occurrence of birds and the landscape structure. We present a method that combines two comprehensive procedures: the "landscape-centred approach" and "guild classification". Our study is based on more than 20,000 individual bird observations based on a 4-year bird monitoring approach in a typical agricultural area in the north-eastern German lowlands...
April 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28303034/searching-for-wheat-resistance-to-aphids-and-wheat-bulb-fly-in-the-historical-watkins-and-gediflux-wheat-collections
#14
G I Aradottir, J L Martin, S J Clark, J A Pickett, L E Smart
Insect pests can reduce wheat yield by direct feeding and transmission of plant viruses. Here we report results from laboratory and field phenotyping studies on a wide range of wheat, including landraces from the Watkins collection deriving from before the green revolution, more modern cultivars from the Gediflux collection (north-western Europe) and modern UK Elite varieties, for resistance to the bird cherry-oat aphid, Rhopalosiphum padi (Homoptera: Aphididae) and the English grain aphid, Sitobion avenae (Homoptera: Aphididae)...
March 2017: Annals of Applied Biology
https://www.readbyqxmd.com/read/28293406/%C3%AE-thalassemia-distribution-in-the-old-world-an-ancient-disease-seen-from-a-historical-standpoint
#15
REVIEW
Vincenzo De Sanctis, Christos Kattamis, Duran Canatan, Ashraf T Soliman, Heba Elsedfy, Mehran Karimi, Shahina Daar, Yasser Wali, Mohamed Yassin, Nada Soliman, Praveen Sobti, Soad Al Jaouni, Mohamed El Kholy, Bernadette Fiscina, Michael Angastiniotis
BACKGROUND: Haemoglobinopathies constitute the commonest recessive monogenic disorders worldwide, and the treatment of affected individuals presents a substantial global disease burden. β-thalassaemia is characterised by the reduced synthesis (β(+)) or absence (β(o)) of the β-globin chains in the HbA molecule, resulting in accumulation of excess unbound α-globin chains that precipitate in erythroid precursors in the bone marrow and in the mature erythrocytes, leading to ineffective erythropoiesis and peripheral haemolysis...
2017: Mediterranean Journal of Hematology and Infectious Diseases
https://www.readbyqxmd.com/read/28292644/resilient-landscapes-in-mediterranean-urban-areas-understanding-factors-influencing-forest-trends
#16
Antonio Tomao, Valerio Quatrini, Piermaria Corona, Agostino Ferrara, Raffaele Lafortezza, Luca Salvati
Urban and peri-urban forests are recognized as basic elements for Nature-Based Solutions (NBS), as they preserve and may increase environmental quality in urbanized contexts. For this reason, the amount of forest land per inhabitant is a pivotal efficiency indicator to be considered in the sustainable governance, land management, planning and design of metropolitan areas. The present study illustrates a multivariate analysis of per-capita forest area (PFA) in mainland Attica, the urban region surrounding Athens, Greece...
March 11, 2017: Environmental Research
https://www.readbyqxmd.com/read/28286357/pastoralists-as-optimal-foragers-reoccupation-and-site-selection-in-the-deserts-of-post-soviet-kazakhstan
#17
S Robinson, C Kerven, R Behnke, K Kushenov, E J Milner-Gulland
This study explores the drivers of site selection amongst livestock owners under conditions of increasing animal numbers following a low point in the 1990s. Our major goal was to understand whether livestock owners are acting as 'optimal foragers,' targeting areas of highest forage availability as they colonise previously empty areas. The results presented here suggest that they do not. Initially, distance from home settlement was the dominant determinant of site occupancy, with closer sites occupied earlier regardless of other characteristics...
2017: Human Ecology: An Interdisciplinary Journal
https://www.readbyqxmd.com/read/28285517/impacts-of-land-use-changes-on-the-lakes-across-the-yangtze-floodplain-in-china
#18
Cong Xie, Xin Huang, Hongqiang Mu, Wei Yin
The middle and lower Yangtze (MLY) floodplain has one of the most densely distributed lake clusters in China but suffered from long-term lake reclamation and wetland degradation due to intensive cultivation, fish rearing, and urban expansion over the past several decades. As a land-use alternation to support human life, the conversion of lakes to cropland, aquaculture ponds, and human settlements provides essential ecosystem goods at the expense of the deterioration of wetland environment. To quantify the driving factors of lake changes, we investigated the land-use transitions from lakes (≥1 km(2)) between 1975 and 2015 using Landsat remote sensing data...
March 22, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28284127/a-practice-of-ultra-fine-tailings-disposal-as-filling-material-in-a-gold-mine
#19
D Q Deng, L Liu, Z L Yao, K I-I L Song, D Z Lao
A practice of cemented backfill technology with ultra-fine tailings in a gold mine was comprehensively presented, and a series of tests were conducted in accordance with the peculiar properties of ultra-fine tailings and the mining technology conditions. The test results show that, the tailings from Shuiyindong Gold Mine have a great grinding fineness, with the average particle diameter 22.03 μm, in which the ultra-fine particles with the diameter below 20 μm occupying 66.13%. The analysis results of chemical components of tailings indicate that the content of SiO2 is relatively low, i...
March 8, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28281658/cumulative-effects-of-suspended-sediments-organic-nutrients-and-temperature-stress-on-early-life-history-stages-of-the-coral-acropora-tenuis
#20
Adriana Humanes, Gerard F Ricardo, Bette L Willis, Katharina E Fabricius, Andrew P Negri
Coral reproduction is vulnerable to both declining water quality and warming temperatures, with simultaneous exposures likely compounding the negative impact of each stressor. We investigated how early life processes of the coral Acropora tenuis respond to increasing levels of suspended sediments in combination with temperature or organic nutrients. Fertilization success and embryo development were more sensitive to suspended sediments than to high temperatures or nutrient enrichment, while larval development (after acquisition of cilia) and settlement success were predominantly affected by thermal stress...
March 10, 2017: Scientific Reports
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