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https://www.readbyqxmd.com/read/29793109/17%C3%AE-estradiol-as-precursors-of-cl-br-dbps-in-the-disinfection-process-of-different-water-samples
#1
Yanan Shao, Zihan Pan, Chuan Rong, Yinghui Wang, Hongxiang Zhu, Yuanyuan Zhang, Kefu Yu
During chlorine disinfection process, reactions between the disinfectant and 17β-estradiol (E2) lead to the formation of halogenated disinfection byproducts (DBPs) which can be a risk to both ecosystem and human health. The degradation and transformation products of E2 in sodium hypochlorite (NaClO) disinfection processes of different water samples were investigated. The reaction kinetics research showed that the degradation rates of E2 were considerably dependent on the initial pH value and the types of water samples...
May 21, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29793106/microplastics-in-mussels-sampled-from-coastal-waters-and-supermarkets-in-the-united-kingdom
#2
Jiana Li, Christopher Green, Alan Reynolds, Huahong Shi, Jeanette M Rotchell
Global contamination of the marine environment by plastic has led to the discovery of microplastics in a range of marine species, including those for human consumption. In this study, the presence of microplastics and other anthropogenic debris in seawater and mussels (Mytilus edulis) from coastal waters of the U.K., as well as supermarket sources, was investigated. These were detected in all samples from all sites with spatial differences observed. Seawater samples taken from 6 locations (in triplicates) displayed 3...
May 21, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29793050/small-scale-managed-marine-areas-over-time-developments-and-challenges-in-a-local-fijian-reef-fishery
#3
Elodie Fache, Annette Breckwoldt
This paper investigates the Locally Managed Marine Area (LMMA) approach through looking at developments and challenges of community-based marine resource management over time, with a particular focus on Fiji in the South Pacific region. A diachronic perspective, based on two multi-method empirical studies, is used to exemplify the social complexities of the implementation of this LMMA approach in a specific island setting. This perspective connects local stakeholders' establishment and management of a LMMA covering their entire customary fishing rights area (iqoliqoli) with the national context articulated around the Fiji Locally Managed Marine Area (FLMMA) network, as well as with regional networking and international conservation dynamics...
May 21, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29793022/superhydrophobic-graphene-based-sponge-as-a-novel-sorbent-for-crude-oil-removal-under-various-environmental-conditions
#4
Ruei-Feng Shiu, Chon-Lin Lee, Ping-Yen Hsieh, Chi-Shuo Chen, Yun-Yi Kang, Wei-Chun Chin, Nyan-Hwa Tai
Mechanical recovery of oils using oil sorbents is one of the most important approaches to manage marine oil spills. However, the properties of the oils spilled into sea are influenced by external environmental conditions. In this study, we present a graphene-based (GB) sponge as a novel sorbent for crude oil removal and compare its performance with that of a commercial sorbent sheet under various environmental parameters. The GB sponge with excellent superhydrophobic and superoleophilic characteristics is demonstrated to be an efficient sorbent for crude oils, with high sorption capacity (up to 85-95 times its weight) and good reusability...
May 15, 2018: Chemosphere
https://www.readbyqxmd.com/read/29792858/luciferase-of-the-japanese-syllid-polychaete-odontosyllis-umdecimdonta
#5
Darrin T Schultz, Alexey A Kotlobay, Rustam Ziganshin, Artyom Bannikov, Nadezhda M Markina, Tatiana V Chepurnyh, Ekaterina S Shakhova, Ksenia Palkina, Steven H D Haddock, Ilia V Yampolsky, Yuichi Oba
Odontosyllis undecimdonta is a marine syllid polychaete that produces bright internal and exuded bioluminescence. Despite over fifty years of biochemical investigation into Odontosyllis bioluminescence, the light-emitting small molecule substrate and catalyzing luciferase protein have remained a mystery. Here we describe the discovery of a bioluminescent protein fraction from O. undecimdonta, the identification of the luciferase using peptide and RNA sequencing, and the in vitro reconstruction of the bioluminescence reaction using highly purified O...
May 21, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29792805/a-cheminformatic-insight-into-the-differences-between-terrestrial-and-marine-originated-natural-products
#6
Jun Shang, Ben Hu, Junmei Wang, Feng Zhu, Yu Kang, Dan Li, Huiyong Sun, De-Xin Kong, Tingjun Hou
This is a new golden age for the drug discovery based on natural products derived from both marine and terrestrial sources. Herein, a straightforward but important question is what are the major structural differences between marine natural products (MNPs) and terrestrial natural products (TNPs). To answer this question, we analyzed the important physicochemical properties, structural features and drug-likeness of the two types of natural products and discussed their differences from the perceptive of evolution...
May 24, 2018: Journal of Chemical Information and Modeling
https://www.readbyqxmd.com/read/29792428/structures-and-activities-of-tiahuramides-a-c-cyclic-depsipeptides-from-a-tahitian-collection-of-the-marine-cyanobacterium-lyngbya-majuscula
#7
Annabel Levert, Rebeca Alvariño, Louis Bornancin, Eliane Abou Mansour, Adam M Burja, Anne-Marie Genevière, Isabelle Bonnard, Eva Alonso, Luis Botana, Bernard Banaigs
The structures of three new cyclic depsipeptides, tiahuramides A (1), B (2), and C (3), from a French Polynesian collection of the marine cyanobacterium Lyngbya majuscula are described. The planar structures of these compounds were established by a combination of mass spectrometry and 1D and 2D NMR experiments. Absolute configurations of natural and nonproteinogenic amino acids were determined through a combination of acid hydrolysis, derivitization with Marfey's reagent, and HPLC. The absolute configuration of hydroxy acids was confirmed by Mosher's method...
May 24, 2018: Journal of Natural Products
https://www.readbyqxmd.com/read/29792083/a-systematic-review-and-meta-analysis-of-the-association-between-vitamin-a-intake-serum-vitamin-a-and-risk-of-liver-cancer
#8
Nattawut Leelakanok, Ronilda R D'Cunha, Grerk Sutamtewagul, Marin L Schweizer
BACKGROUND: Previous evidence supports that vitamin A decreases the risk of several types of cancer. However, the association between vitamin A and liver cancer is inconclusive. AIM: This systematic review and meta-analysis summarizes the existing literature, discussing the association between vitamin A intake, serum vitamin A, and liver cancer in adult populations. METHODS: A systematic literature review was performed by searching the EMBASE, PubMed, Scopus and International Pharmaceutical Abstract databases using terms related to vitamin A (e...
January 1, 2018: Nutrition and Health
https://www.readbyqxmd.com/read/29791970/effect-of-high-intensity-resistance-circuit-based-training-in-hypoxia-on-aerobic-performance-and-repeat-sprint-ability
#9
Domingo J Ramos-Campo, Ismael Martínez-Guardado, Guillermo Olcina, Cristian Marín-Pagán, Francisco J Martínez-Noguera, Jorge Carlos-Vivas, Pedro E Alcaraz, Jacobo A Rubio-Arias
Recent acute studies have shown that high-intensity resistance circuit-based (HRC) training in hypoxia increases metabolic stress. However, no intervention studies have yet proven their effectiveness. This study aimed to analyse the effect of 8 weeks of HRC in hypoxia on aerobic performance, resting energy expenditure (REE), repeat sprint ability (RSA) and haematological variables. Twenty-eight subjects were assigned to hypoxia (FiO2 =15%; HRChyp : n=15; age: 24.6±6.8 years; height: 177.4±5.9 cm; weight: 74...
May 23, 2018: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29791769/bioprospecting-from-marine-coastal-sediments-of-colombian-caribbean-screening-and-study-of-antimicrobial-activity
#10
M Quintero, A Velásquez, L M Jutinico, E Jiménez-Vergara, L M Blandón, K Martinez, H S Lee, J Gómez-León
AIMS: To isolate microorganisms associated to marine - coastal sediments of colombian Caribbean and for evaluating its antimicrobial activity in order to identify the most active strains. METHODS AND RESULTS: 104 strains were isolated from sediment samples of the colombian Caribbean. First at all, an antimicrobial activity screening was made using agar well diffusion method against the pathogens: Escherichia coli, Staphylococcus aureus, Klebsiella pneumoniae, Candida albicans, Candida tropicalis and Pseudomonas aeruginosa...
May 23, 2018: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/29791713/the-transradial-approach-for-lower-extremity-vascular-intervention
#11
Rami O Tadros, Vivek S Prakash, Melissa J Baldwin, Adam Korayem, Michael L Marin, Peter L Faries
Simultaneous technological advancements in both imaging as well as devices have resulted in an expansion of endovascular options for vascular access. In particular, radial access has traditionally been more favored for coronary interventions; its use in the aortoiliac and lower extremity vasculature has been constrained by the length of devices and the size of sheaths required. However, with increasing catheter shaft lengths, in addition to new thin-walled sheaths allowing for downsizing, the ability to perform transradial interventions on infrainguinal and infrageniculate vessels has been more readily facilitated...
June 1, 2018: Surgical Technology International
https://www.readbyqxmd.com/read/29791682/body-dissatisfaction-physical-activity-and-sedentary-behavior-in-female-adolescents
#12
Valter Paulo Neves Miranda, Núbia Sousa de Morais, Eliane Rodrigues de Faria, Paulo Roberto Dos Santos Amorim, João Carlos Bouzas Marins, Sylvia do Carmo Castro Franceschini, Paula Costa Teixeira, Silvia Eloiza Priore
OBJECTIVE: To evaluate the association of body image with physical activity level, body composition, and sedentary behavior (SB) of female adolescents. METHODS: Exploratory cross-sectional study conducted with 120 female adolescents aged between 14-19 years, from the city of Viçosa, Minas Gerais, Southeast Brazil. Body image was evaluated with a Body Silhouette Scale (BSS) and a Body Shape Questionnaire (BSQ). Weight, height, and waist circumference values were analyzed, as well as the waist-to-height ratio and body fat percentage...
May 21, 2018: Revista Paulista de Pediatria: Orgão Oficial da Sociedade de Pediatria de São Paulo
https://www.readbyqxmd.com/read/29791635/elderly-people-with-mental-disorders-experiencing-the-use-of-psychotropic-medicines
#13
Maria José Sanches Marin, Mariluci Alves Maftum, Maria Ribeiro Lacerda
OBJECTIVE: To interpret the experience of the elderly with mental disorder in the use of psychotropic medicines. METHOD: Qualitative study in the interpretative modality, supported by the Grounded Theory. It was carried out from interviews with 16 elderly people with mental disorder and six relatives, totaling 22 participants. RESULTS: In the experience of the use of psychotropic medicines, the elderly with mental disorders become aware of their condition, attribute meaning and establish strategies for the correct use...
2018: Revista Brasileira de Enfermagem
https://www.readbyqxmd.com/read/29791625/self-care-of-elderly-people-after-the-diagnosis-of-acquired-immunodeficiency-syndrome
#14
Graciela Machado de Araujo, Marinês Tambara Leite, Leila Mariza Hildebrandt, Cinthia Cristina Oliveski, Margrid Beuter
OBJECTIVE: to characterize the seropositive elderly for the Human Immunodeficiency Virus and Acquired Immunodeficiency Syndrome (HIV/AIDS) in their socio-demographic aspects; to understand how the elderly take care of themselves from the diagnosis of HIV/AIDS. METHOD: Qualitative, descriptive, exploratory research conducted at a Voluntary Counseling and Testing Center with 10 elderly people receiving treatment for HIV/AIDS. The data were analyzed according to the content analysis...
2018: Revista Brasileira de Enfermagem
https://www.readbyqxmd.com/read/29791580/influence-of-aerobic-training-on-the-mechanics-of-ventricular-contraction-after-acute-myocardial-infarction-a-pilot-study
#15
Giovani Luiz De Santi, Henrique Turin Moreira, Eduardo Elias Vieira de Carvalho, Júlio César Crescêncio, André Schmidt, José Antônio Marin-Neto, Lourenço Gallo-Júnior
The study of myocardial contractility, based on the new anatomical concepts that govern cardiac mechanics, represents a promising strategy of analysis of myocardial adaptations related to physical training in the context of post-infarction. We investigated the influence of aerobic training on physical capacity and on the evaluation parameters of left ventricular contraction mechanics in patients with myocardial infarction. Thirty-one patients (55.1 ± 8.9 years) who had myocardial infarction in the anterior wall were prospectively investigated in three groups: interval training group (ITG) (n = 10), moderate training group (MTG) n = 10) and control group (CG) (n = 10)...
April 2018: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/29791459/species-identification-and-connectivity-of-marine-amphipods-in-canada-s-three-oceans
#16
Astrid Tempestini, Søren Rysgaard, France Dufresne
Monitoring the distribution of marine biodiversity is a crucial step to better assess the impacts of global changes. Arctic marine fauna is dominated by amphipods in terms of abundance and biomass. These peracarids are an important marine order of crustaceans but the number of species found in the different Canadian oceans is currently unknown. Furthermore, most species are difficult to identify due to poor taxonomic descriptions and morphological convergence. The aim of this study was to assess the species diversity of marine amphipods in the three Canadian oceans using DNA barcoding...
2018: PloS One
https://www.readbyqxmd.com/read/29791429/-clinical-practice-guideline-for-the-evaluation-and-management-of-upper-gastrointestinal-bleeding-for-the-peruvian-social-security-essalud
#17
Jorge Vásquez-Quiroga, Alvaro Taype-Rondan, Jessica Hanae Zafra-Tanaka, Ericson Arcana-López, Luis Cervera-Caballero, Javier Contreras-Turin, Katherine Guzmán-Cáceres, Juan Llatas-Perez, Luis Marin-Calderón, Alejandro Piscoya, Daniel Vargas-Blácido, Nelly Vásquez-Valverde, Raúl Timaná-Ruiz
OBJECTIVE: To provide evidence-based clinical recommendations for the evaluation and management of patients with upper gastrointestinal bleeding (UGB) in the Peruvian Social Security (EsSalud). MATERIALS AND METHODS: A local guideline development group (local GDG) was established, including specialists in gastroenterology and methodologists. The local GDG formulated 11 clinical questions to be answered by this clinical practice guide (CPG). We searched and selected CPG of UGB published from 2012, which answered the posed questions and obtained a score higher than 60% in domains 1 and 3 of the Appraisal of Guidelines for Research and Evaluation II (AGREE-II) tool...
January 2018: Revista de Gastroenterología del Perú: órgano Oficial de la Sociedad de Gastroenterología del Perú
https://www.readbyqxmd.com/read/29791305/commercial-frozen-mice-used-by-owners-to-feed-reptiles-are-highly-externally-contaminated-with-salmonella-enteritidis-pt8
#18
Clara Marin, Francesca Martelli, André Rabie, Robert Davies
Salmonella remains one of the most prevalent zoonoses worldwide. Although salmonellosis is commonly associated with the consumption of contaminated food, it has been estimated that up to 11% of Salmonella infections overall are acquired from direct or indirect contact with animals, including reptiles. In 2016, an outbreak of Salmonella Enteritidis involving multiple cases, especially children, associated with reptile contact and contaminated feeder mice was reported in the United Kingdom. The aim of this study was to investigate Salmonella external and internal contamination of stored commercial frozen feeder mice used to feed reptiles and obtained from the same supplier involved in the outbreak...
May 23, 2018: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/29791035/uncovering-cryptic-diversity-of-lyngbya-the-new-tropical-marine-cyanobacterial-genus-dapis-oscillatoriales
#19
Niclas Engene, Ana Tronholm, Valerie J Paul
Cyanobacteria comprise an extraordinarily diverse group of microorganisms and, as revealed by increasing molecular information, this biodiversity is even more extensive than previously estimated. In this sense, the cyanobacterial genus Lyngbya is a highly polyphyletic group composed of many unrelated taxa with morphological similarities. In this study, the new genus Dapis was erected from the genus Lyngbya, based on a combined molecular, chemical, and morphological approach. Herein, two new species of cyanobacteria are described: D...
May 23, 2018: Journal of Phycology
https://www.readbyqxmd.com/read/29790926/bathyarchaeota-globally-distributed-metabolic-generalists-in-anoxic-environments
#20
Zhichao Zhou, Jie Pan, Fengping Wang, Ji-Dong Gu, Meng Li
Bathyarchaeota, formerly known as the Miscellaneous Crenarchaeotal Group, is a phylum of global generalists that are widespread in anoxic sediments, which host relatively high abundant archaeal communities. Until now, 25 subgroups have been identified in the Bathyarchaeota. The distinct bathyarchaeotal subgroups diverged to adapt to the marine and freshwater environments. Based on the physiological and genomic evidence, acetyl-CoA centralized heterotrophic pathways of energy conservation have been proposed to function in Bathyarchaeota; these microbes are able to anaerobically utilize (i) detrital proteins, (ii) polymeric carbohydrates, (iii) fatty acids/aromatic compounds, (iv) methane (or short chain alkane) and methylated compounds, (v) and/or potentially other organic matter...
May 21, 2018: FEMS Microbiology Reviews
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