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https://www.readbyqxmd.com/read/27904806/dominance-relationships-in-a-family-pack-of-captive-arctic-wolves-canis-lupus-arctos-the-influence-of-competition-for-food-age-and-sex
#1
Simona Cafazzo, Martina Lazzaroni, Sarah Marshall-Pescini
BACKGROUND: Dominance is one of the most pervasive concepts in the study of wolf social behaviour but recently its validity has been questioned. For some authors, the bonds between members of wolf families are better described as parent-offspring relationships and the concept of dominance should be used just to evaluate the social dynamics of non-familial captive pack members (e.g., Mech & Cluff, 2010). However, there is a dearth of studies investigating dominance relationships and its correlates in wolf family packs...
2016: PeerJ
https://www.readbyqxmd.com/read/27890144/classification-of-a-driver-s-cognitive-workload-levels-using-artificial-neural-network-on-ecg-signals
#2
Amir Tjolleng, Kihyo Jung, Wongi Hong, Wonsup Lee, Baekhee Lee, Heecheon You, Joonwoo Son, Seikwon Park
An artificial neural network (ANN) model was developed in the present study to classify the level of a driver's cognitive workload based on electrocardiography (ECG). ECG signals were measured on 15 male participants while they performed a simulated driving task as a primary task with/without an N-back task as a secondary task. Three time-domain ECG measures (mean inter-beat interval (IBI), standard deviation of IBIs, and root mean squared difference of adjacent IBIs) and three frequencydomain ECG measures (power in low frequency, power in high frequency, and ratio of power in low and high frequencies) were calculated...
March 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/27887625/the-impact-of-temperature-and-precipitation-on-blacklegged-tick-activity-and-lyme-disease-incidence-in-endemic-and-emerging-regions
#3
James C Burtis, Patrick Sullivan, Taal Levi, Kelly Oggenfuss, Timothy J Fahey, Richard S Ostfeld
BACKGROUND: The incidence of Lyme disease shows high degrees of inter-annual variation in the northeastern United States, but the factors driving this variation are not well understood. Complicating matters, it is also possible that these driving factors may vary in regions with differing histories of Lyme disease endemism. We evaluated the effect of the number of hot (T > 25 °C), dry (precipitation = 0) days during the questing periods of the two immature Ixodes scapularis life stages (larval and nymphal) on inter-annual variation in Lyme disease incidence between 2000 and 2011 in long-term endemic versus recently endemic areas...
November 25, 2016: Parasites & Vectors
https://www.readbyqxmd.com/read/27861238/complementary-feeding-and-diarrhea-and-respiratory-infection-among-hiv-exposed-tanzanian-infants
#4
P Kamenju, E Liu, E Hertzmark, D Spiegelman, R R Kisenge, R Kupka, S Aboud, K P Manji, C Duggan, W W Fawzi
OBJECTIVE: To examine the association between complementary feeding (CF) and risks of diarrhea and acute respiratory infection (ARI) among HIV-exposed infants aged 6-24 months. DESIGN: We prospectively employed an Infant and Child Feeding Index (ICFI) to measure CF practices (breastfeeding status, food consistency, dietary diversity, food group frequency and meal frequency). We determined the association of ICFI and each of its components with the risk of diarrhea and ARI...
November 14, 2016: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/27833033/establishment-and-development-of-the-intestinal-microbiota-of-preterm-infants-in-a-lebanese-tertiary-hospital
#5
Tarek Itani, Carole Ayoub Moubareck, Imad Melki, Clotilde Rousseau, Irène Mangin, Marie-José Butel, Dolla Karam Sarkis
The establishment and development of the intestinal microbiota is known to be associated with profound short- and long-term effects on the health of full-term infants (FTI), but studies are just starting for preterm infants (PTI). The data also mostly come from western countries and little information is available for the Middle East. Here, we determined the composition and dynamics of the intestinal microbiota during the first month of life for PTI (n = 66) and FTI (n = 17) in Lebanon. Fecal samples were collected weekly and analyzed by quantitative PCR (q-PCR) and temporal temperature gradient gel electrophoresis (TTGE)...
November 8, 2016: Anaerobe
https://www.readbyqxmd.com/read/27821171/comparison-of-molecular-quantification-of-plasmodium-falciparum-gametocytes-by-pfs25-qrt-pcr-and-qt-nasba-in-relation-to-mosquito-infectivity
#6
Helmi Pett, Bronner P Gonçalves, Alassane Dicko, Issa Nébié, Alfred B Tiono, Kjerstin Lanke, John Bradley, Ingrid Chen, Halimatou Diawara, Almahamoudou Mahamar, Harouna M Soumare, Sekou F Traore, Ibrahima Baber, Sodiomon B Sirima, Robert Sauerwein, Joelle Brown, Roly Gosling, Ingrid Felger, Chris Drakeley, Teun Bousema
BACKGROUND: Quantifying gametocyte densities in natural malaria infections is important to estimate malaria transmission potential. Two molecular methods (Pfs25 mRNA quantitative reverse transcriptase PCR (qRT-PCR) and Pfs25 mRNA quantitative nucleic acid sequence based amplification (QT-NASBA)) are commonly used to determine gametocyte densities in clinical and epidemiological studies and allow gametocyte detection at densities below the microscopic threshold for detection. Here, reproducibility of these measurements and the association between estimated gametocyte densities and mosquito infection rates were compared...
November 8, 2016: Malaria Journal
https://www.readbyqxmd.com/read/27812361/transcriptome-analysis-of-green-peach-aphid-myzus-persicae-insight-into-developmental-regulation-and-inter-species-divergence
#7
Rui Ji, Yujun Wang, Yanbin Cheng, Meiping Zhang, Hong-Bin Zhang, Li Zhu, Jichao Fang, Keyan Zhu-Salzman
Green peach aphid (Myzus persicae) and pea aphid (Acyrthosiphon pisum) are two phylogenetically closely related agricultural pests. While pea aphid is restricted to Fabaceae, green peach aphid feeds on hundreds of plant species from more than 40 families. Transcriptome comparison could shed light on the genetic factors underlying the difference in host range between the two species. Furthermore, a large scale study contrasting gene expression between immature nymphs and fully developed adult aphids would fill a previous knowledge gap...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27808421/identification-and-quantification-of-thymol-metabolites-in-plasma-liver-and-duodenal-wall-of-broiler-chickens-using-uhplc-esi-qtof-ms
#8
Jana Pisarčíková, Vladimíra Oceľová, Štefan Faix, Iveta Plachá, Angela I Calderón
In the present study, we aimed to develop a method for thymol sulfate and thymol glucuronide determination in plasma, liver, and duodenal wall of broiler chickens after feeding with a Thymus vulgaris essential oil at the different concentrations (0.01%, 0.05%, 0.1% w/w). UHPLC coupled with Accurate-Mass QTOF-MS was used for identification and quantification of thymol metabolites. A novel Waters Oasis Prime HLB SPE cartridges were applied to sample clean-up with extraction recoveries ranged from 85 to 92%. The presence of thymol glucuronide was confirmed by MS software according to molecular formula, score, mass error, and double bond equivalent...
November 3, 2016: Biomedical Chromatography: BMC
https://www.readbyqxmd.com/read/27780868/inter-domain-synergism-is-required-for-efficient-feeding-of-cellulose-chain-into-active-site-of-cellobiohydrolase-cel7a
#9
Riin Kont, Jeppe Kari, Kim Borch, Peter Westh, Priit Väljamäe
Structural polysaccharides like cellulose and chitin are abundant and their enzymatic degradation to soluble sugars is an important route in green chemistry. Processive glycoside hydrolases (GHs), like cellobiohydrolase Cel7A of Trichoderma reesei (TrCel7A) are key components of efficient enzyme systems. TrCel7A consists of catalytic domain (CD) and a smaller carbohydrate binding module (CBM) connected through the glycosylated linker peptide. A tunnel shaped active site rests in the CD and contains 10 glucose unit binding sites...
October 25, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27779869/ion-mobility-derived-collision-cross-section-as-an-additional-identification-point-for-multi-residue-screening-of-pesticides-in-fish-feed
#10
Jorge Regueiro, Noelia Negreira, Marc H G Berntssen
Ion mobility spectrometry allows for the measurement of the collision cross section (CCS), which provides information about the shape of an ionic molecule in the gas phase. While the hyphenation of travelling-wave ion mobility spectrometry (TWIMS) with high-resolution quadrupole time-of-flight mass spectrometry (QTOFMS) has been mainly used for structural elucidation purposes, its potential for fast screening of small molecules in complex samples has not yet been thoroughly evaluated. The current work explores the capabilities of ultra-high performance liquid chromatography (UHPLC) coupled to a new design TWIMS-QTOFMS for the screening and identification of a large set of pesticides in complex salmon feed matrices...
October 25, 2016: Analytical Chemistry
https://www.readbyqxmd.com/read/27753137/appropriate-exposure-estimates-for-wildlife-risk-assessments-of-crop-protection-products-based-on-continuous-radio-telemetry-a-case-study-with-woodpigeons
#11
Jan-Dieter Ludwigs, Markus Ebeling, Timothy B Fredricks, Roger C Murfitt, Steven Kragten
The registration of pesticides follows guidance published by the European Food Safety Authority, EFSA. As a default, the EFSA guidance document on risk assessment for birds and mammals assumes that animals feed exclusively on pesticide-treated fields. However, the guidance document suggests refining the risk via the proportion of food animals obtain from a treated field or specific crop (expressed via the so-called PT value). The EFSA guidance equalizes the portion of food taken from a treated area per day with the portion of time spent potentially foraging over the course of a day within this area...
October 18, 2016: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/27745748/blood-level-of-inter-alpha-inhibitor-proteins-distinguishes-necrotizing-enterocolitis-from-spontaneous-intestinal-perforation
#12
Birju A Shah, Alison Migliori, Itsuka Kurihara, Surendra Sharma, Yow-Pin Lim, James Padbury
OBJECTIVE: To examine circulating levels of inter-alpha inhibitor protein (IaIp) in infants with necrotizing enterocolitis (NEC), spontaneous intestinal perforation (SIP), and matched controls to assess the diagnostic accuracy of IaIp to differentiate NEC from SIP and to compare receiver operating characteristics of IaIp for NEC with C-reactive protein (CRP). STUDY DESIGN: A prospective, nested case-control study of infants with feeding intolerance was carried out...
October 10, 2016: Journal of Pediatrics
https://www.readbyqxmd.com/read/27734701/-solution-of-iodine-deficiency-in-the-czech-republic-history-and-current-situation20-years-of-work-of-prof-v%C3%A3-clav-zamrazil-for-commission-for-the-solution-of-iodine-deficiency
#13
Lydie Ryšavá, Jaroslav Kříž
Diseases caused by Iodine deficit are preventable. Inter resort Commission for the solution of Iodine deficiency (MKJD) at State Institute for Health (SZU) in Prague has been taking effective measures which satisfied requirements of the Principles for sustainable elimination of diseases caused by Iodine deficiency ICCD WHO: 96 % of households is using iodized salt, average Iodine content is 25 mg/1 kg of salt. Data from studies show ioduria less 100 mcg/l in only 9 per cent of seniors, 5 % of children 7-10 years, 3 % of children 10-12 years...
2016: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/27734688/-iodine-supply-and-iodinuria-among-the-czech-population-between-the-years-1995-and-2016
#14
Lydie Ryšavá, Jaroslav Kříž, Lucie Kašparová, Tereza Křížová, Monika Žoltá, Petra Lisníková
Monitoring of Ioduria and Iodine saturation are essential tools for evaluation of effectivness of measures aimed at elimination of diseases caused by iodine deficiency. Between 1995 and 2016 monitoring of ioduria was udertaken in various population groups in Czech Republic. The most recent study (2015) found only 37 % of pregnant women in optimal range of ioduria (150-300 mcg/l), in iodopenic range 27 %, while 6 % of these had severe iodopenia below 50 mcg/l. In a group of 3y old children investigated in the same year, 57 % were found to have Ioduria within the recommended range (90-299 mcg/l), 24 % had higher than recommended Ioduria (300-499 mcg/l) and 8 % excessive saturation (over 500 mcg/l)...
2016: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/27725815/resource-partitioning-between-bacteria-fungi-and-protists-in-the-detritusphere-of-an-agricultural-soil
#15
Susanne Kramer, Dörte Dibbern, Julia Moll, Maike Huenninghaus, Robert Koller, Dirk Krueger, Sven Marhan, Tim Urich, Tesfaye Wubet, Michael Bonkowski, François Buscot, Tillmann Lueders, Ellen Kandeler
The flow of plant-derived carbon in soil is a key component of global carbon cycling. Conceptual models of trophic carbon fluxes in soil have assumed separate bacterial and fungal energy channels in the detritusphere, controlled by both substrate complexity and recalcitrance. However, detailed understanding of the key populations involved and niche-partitioning between them is limited. Here, a microcosm experiment was performed to trace the flow of detritusphere C from substrate analogs (glucose, cellulose) and plant biomass amendments (maize leaves, roots) in an agricultural soil...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27718399/excellent-n-fixing-and-p-solubilizing-traits-in-earthworm-gut-isolated-bacteria-a-vermicompost-based-assessment-with-vegetable-market-waste-and-rice-straw-feed-mixtures
#16
Nazneen Hussain, Archana Singh, Sougata Saha, Mattaparthi Venkata Satish Kumar, Pradip Bhattacharyya, Satya Sundar Bhattacharya
Vermicomposting is a dependable waste recycling technology which greatly augments N and P levels mainly through microbial action. This paper aims to identify efficient N-fixing (NFB) and P-solubilizing (PSB) bacteria from earthworm intestines. Various combinations of vegetable market waste, rice straw, and cowdung were fed to two earthworm species (Eisenia fetida and Perionyx excavatus). Total organic C decreased, pH shifted towards neutrality, and NPK availability, and microbial (NFB, PSB, and total bacteria) population increased remarkably during vermicomposting with E...
September 30, 2016: Bioresource Technology
https://www.readbyqxmd.com/read/27706095/soluble-fiber-with-high-water-binding-capacity-swelling-capacity-and-fermentability-reduces-food-intake-by-promoting-satiety-rather-than-satiation-in-rats
#17
Chengquan Tan, Hongkui Wei, Xichen Zhao, Chuanhui Xu, Yuanfei Zhou, Jian Peng
To understand whether soluble fiber (SF) with high water-binding capacity (WBC), swelling capacity (SC) and fermentability reduces food intake and whether it does so by promoting satiety or satiation or both, we investigated the effects of different SFs with these properties on the food intake in rats. Thirty-two male Sprague-Dawley rats were randomized to four equal groups and fed the control diet or diet containing 2% konjac flour (KF), pregelatinized waxy maize starch (PWMS) plus guar gum (PG), and PWMS starch plus xanthan gum (PX) for three weeks, with the measured values of SF, WBC, and SC in the four diets following the order of PG > KF > PX > control...
October 2, 2016: Nutrients
https://www.readbyqxmd.com/read/27696419/immune-affinity-monolithic-array-with-chemiluminescent-detection-for-mycotoxins-in-barley
#18
Li Li, Liru Xia, Yongfu Zhao, Min Wang, Xizhi Jiang
BACKGROUND: Mycotoxins are produced by fungi as secondary metabolites. They often multi-contaminate food and feed commodities posing a health risk to humans and animals. Fast and easy multiplex screening could be thought as a useful tool for detection of multi-contaminate food and feed commodities. RESULTS: A highly sensitive immune-affinity monolithic arrays for detecting mycotoxins zearalenone, deoxynivalenol, T-2 toxin, HT-2 toxin, aflatoxins, ochratoxin A, and fumonisin B1 were fabricated using UV induced copolymerization...
October 3, 2016: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/27686370/nutritional-status-and-complementary-feeding-among-hiv-exposed-infants-a-prospective-cohort-study
#19
Pili Kamenju, Enju Liu, Ellen Hertzmark, Donna Spiegelman, Rodrick Kisenge, Roland Kupka, Said Aboud, Karim P Manji, Christopher Duggan, Wafaie W Fawzi
Complementary feeding is crucial for improving child survival and promoting growth and development, particularly among HIV-exposed children who have higher risk of morbidity and mortality than their un-exposed peers. This prospective study employed an infant and child feeding index (ICFI) to measure complementary feeding and determine its association with nutritional status among 2092 HIV-exposed infants followed from 6 to 24 months of age in Dar es Salaam, Tanzania. The ICFI measured both quality and quantity of complementary feeding, including current breastfeeding status, food consistency, dietary diversity scores (DDS), food group frequency score, and meal frequency...
September 30, 2016: Maternal & Child Nutrition
https://www.readbyqxmd.com/read/27658531/tooth-wear-as-a-means-to-quantify-intra-specific-variations-in-diet-and-chewing-movements
#20
Ivan Calandra, Gaëlle Labonne, Ellen Schulz-Kornas, Thomas M Kaiser, Sophie Montuire
In mammals, tooth function, and its efficiency, depends both on the mechanical properties of the food and on chewing dynamics. These aspects have rarely been studied in combination and/or at the intra-specific level. Here we applied 3D dental surface texture analysis to a sample of field voles (Microtus agrestis) trapped from Finnish Lapland at different seasons and localities to test for inter-population variations. We also explored intra-individual variation in chewing dynamics by analysing two facets on the second upper molars...
2016: Scientific Reports
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