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https://www.readbyqxmd.com/read/27920956/grassland-productivity-in-response-to-nutrient-additions-and-herbivory-is-scale-dependent
#1
Erica A H Smithwick, Douglas C Baldwin, Kusum J Naithani
Vegetation response to nutrient addition can vary across space, yet studies that explicitly incorporate spatial pattern into experimental approaches are rare. To explore whether there are unique spatial scales (grains) at which grass response to nutrients and herbivory is best expressed, we imposed a large (∼3.75 ha) experiment in a South African coastal grassland ecosystem. In two of six 60 × 60 m grassland plots, we imposed a scaled sampling design in which fertilizer was added in replicated sub-plots (1 × 1 m, 2 × 2 m, and 4 × 4 m)...
2016: PeerJ
https://www.readbyqxmd.com/read/27898797/effectiveness-of-livestock-exclusion-in-a-pasture-of-central-north-carolina
#2
Daniel E Line, Deanna L Osmond, Wesley Childres
Reducing the export of nitrogen (N), phosphorus (P), and sediment from agricultural land in water-supply watersheds is a continuing goal in central North Carolina. The objective of this project was to document the effectiveness of a combination of livestock exclusion fencing and nutrient management implemented on a beef cattle pasture located in the Piedmont region of North Carolina. The quantity and quality of discharge from two predominantly pasture watersheds were monitored simultaneously for 3.8 yr before and after implementation of the exclusion fencing and nutrient management in the treatment watershed; a control watershed remained unchanged...
November 2016: Journal of Environmental Quality
https://www.readbyqxmd.com/read/27889659/a-national-riparian-restoration-programme-in-new-zealand-is-it-value-for-money
#3
Adam J Daigneault, Florian V Eppink, William G Lee
National scale initiatives are being attempted in New Zealand (NZ) to meet important environmental goals following land-use intensification over recent decades. Riparian restoration to filter agricultural spillover effects is currently the most widely practised mitigation measure but few studies have investigated the cumulative value of these practices at a national level. We use an applied economic land use model the benefits (GHG emissions, N leaching, P loss, sedimentation and biodiversity gain) and relevant costs (fencing, alternative stock water supplies, restoration planting and opportunity costs) of restoring riparian margins (5-50 m) on all streams in NZ flowing through current primary sector land...
November 24, 2016: Journal of Environmental Management
https://www.readbyqxmd.com/read/27884172/spatial-distribution-and-trypanosome-infection-of-tsetse-flies-in-the-sleeping-sickness-focus-of-zimbabwe-in-hurungwe-district
#4
William Shereni, Neil E Anderson, Learnmore Nyakupinda, Giuliano Cecchi
BACKGROUND: In Zimbabwe, cases of human African trypanosomiasis (HAT) are caused by the unicellular protozoan Trypanosoma brucei, sub-species T. b. rhodesiense. They are reported from the tsetse-infested area in the northern part of the country, broadly corresponding to the valley of the Zambezi River. Tsetse-transmitted trypanosomes, in particular T. congolense and T. vivax, also cause morbidity and mortality in livestock, thus generating poverty and food insecurity. Two species of tsetse fly, Glossina morsistans morsitans and G...
November 25, 2016: Parasites & Vectors
https://www.readbyqxmd.com/read/27870889/how-effective-is-road-mitigation-at-reducing-road-kill-a-meta-analysis
#5
Trina Rytwinski, Kylie Soanes, Jochen A G Jaeger, Lenore Fahrig, C Scott Findlay, Jeff Houlahan, Rodney van der Ree, Edgar A van der Grift
Road traffic kills hundreds of millions of animals every year, posing a critical threat to the populations of many species. To address this problem there are more than forty types of road mitigation measures available that aim to reduce wildlife mortality on roads (road-kill). For road planners, deciding on what mitigation method to use has been problematic because there is little good information about the relative effectiveness of these measures in reducing road-kill, and the costs of these measures vary greatly...
2016: PloS One
https://www.readbyqxmd.com/read/27864050/ancestry-trumps-experience-transgenerational-but-not-early-life-stress-affects-the-adult-physiological-stress-response
#6
Gail L McCormick, Travis R Robbins, Sonia A Cavigelli, Tracy Langkilde
Exposure to stressors can affect an organism's physiology and behavior as well as that of its descendants (e.g. through maternal effects, epigenetics, and/or selection). We examined the relative influence of early life vs. transgenerational stress exposure on adult stress physiology in a species that has populations with and without ancestral exposure to an invasive predator. We raised offspring of eastern fence lizards (Sceloporus undulatus) from sites historically invaded (high stress) or uninvaded (low stress) by predatory fire ants (Solenopsis invicta) and determined how this different transgenerational exposure to stress interacted with the effects of early life stress exposure to influence the physiological stress response in adulthood...
November 15, 2016: Hormones and Behavior
https://www.readbyqxmd.com/read/27863868/establishing-geochemical-background-variation-and-threshold-values-for-59-elements-in-australian-surface-soil
#7
Clemens Reimann, Patrice de Caritat
During the National Geochemical Survey of Australia over 1300 top (0-10cm depth) and bottom (~60-80cm depth) sediment samples (including ~10% field duplicates) were collected from the outlet of 1186 catchments covering 81% of the continent at an average sample density of 1 site/5200km(2). The <2mm fraction of these samples was analysed for 59 elements by ICP-MS following an aqua regia digestion. Results are used here to establish the geochemical background variation of these elements, including potentially toxic elements (PTEs), in Australian surface soil...
November 15, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27859068/restored-connectivity-facilitates-recruitment-by-an-endemic-large-seeded-tree-in-a-fragmented-tropical-landscape
#8
Marinés de la Peña-Domene, Emily S Minor, Henry F Howe
Many large-seeded Neotropical trees depend on a limited guild of animals for seed dispersal. Fragmented landscapes reduce animal abundance and movement, limiting seed dispersal between distant forest remnants. In 2006, experimental plantings were established in pasture to determine whether plantings enhance seed dispersal and, ultimately, seedling recruitment. We examined patterns of naturally recruited seedlings of Ocotea uxpanapana, a large-seeded bird-dispersed tree endemic to southern Mexico that occurs in the surrounding landscape...
September 2016: Ecology
https://www.readbyqxmd.com/read/27858931/tick-microbiome-and-pathogen-acquisition-altered-by-host-blood-meal
#9
Andrea Swei, Jessica Y Kwan
Lyme disease, a zoonotic disease, is the most prevalent vector-borne disease in the Northern Hemisphere. Diversity of the vector (tick) microbiome can impact pathogen transmission, yet the biotic and abiotic factors that drive microbiome diversity are largely unresolved, especially under natural, field conditions. We describe the microbiome of Ixodes pacificus ticks, the vector for Lyme disease in the western United States, and show a strong impact of host blood meal identity on tick microbiome species richness and composition...
November 18, 2016: ISME Journal
https://www.readbyqxmd.com/read/27845947/preventing-suicide-in-indigenous-communities
#10
Simon Hatcher, Allison Crawford, Nicole Coupe
PURPOSE OF REVIEW: To provide an update on recent studies on suicide prevention in indigenous populations with a focus on recently colonised indigenous peoples in Canada, the United States, Australia and New Zealand. RECENT FINDINGS: There have been several recent reviews on suicide prevention in indigenous populations with high suicide rates. However most of them describe the problem and there is little new that is available on effective interventions. One randomized controlled trial of a package of measures focusing on cultural identity in Maori who had recently self-harmed compared to usual care found little effect on suicidal behavior but it did significantly reduce presentations to hospital for any reason after one year...
January 2017: Current Opinion in Psychiatry
https://www.readbyqxmd.com/read/27843020/is-targeted-removal-a-suitable-means-for-tuberculosis-control-in-wild-boar
#11
A Che'Amat, J A Armenteros, D González-Barrio, J F Lima, I Díez-Delgado, J A Barasona, B Romero, K P Lyashchenko, J A Ortiz, C Gortázar
We assessed the suitability of targeted removal as a means for tuberculosis (TB) control on an intensely managed Eurasian wild boar (Sus scrofa) hunting estate. The 60km(2) large study area included one capture (treatment) site, one control site, and one release site. Each site was fenced. In the summers of 2012, 2013 and 2014, 929 wild boar were live-captured on the treatment site. All wild boar were micro-chipped and tested using an animal side lateral flow test immediately after capture in order to detect antibodies to the Mycobacterium tuberculosis complex (MTC)...
December 1, 2016: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/27829323/the-effect-of-carbohydrate-mouth-rinsing-on-fencing-performance-and-cognitive-function-following-fatigue-inducing-fencing
#12
G Rowlatt, L Bottoms, C J Edmonds, R Buscombe
This study investigated the impact that mouth rinsing carbohydrate solution has on skill-specific performance and reaction time following a fatigue-inducing bout of fencing in epee fencers. Nine healthy, national-level epee fencers visited a laboratory on two occasions, separated by a minimum of five days, to complete a 1-minute lunge test and Stroop test pre- and post-fatigue. Heart rate and ratings of perceived exertion (RPE) were recorded during completion of the fatiguing protocol. Between fights the participant's mouth rinsed for 10 seconds, either 25 ml of 6...
November 9, 2016: European Journal of Sport Science
https://www.readbyqxmd.com/read/27828094/detection-and-removal-of-fence-occlusions-in-an-image-using-a-video-of-the-static-dynamic-scene
#13
Sankaraganesh Jonna, Krishna K Nakka, Vrushali S Khasare, Rajiv R Sahay, Mohan S Kankanhalli
The advent of inexpensive smartphones/tablets/phablets equipped with cameras has resulted in the average person capturing cherished moments as images/videos and sharing them on the internet. However, at several locations, an amateur photographer may be frustrated with the captured images. For example, the object of interest to the photographer might be occluded or fenced. Currently available image de-fencing methods in the literature are limited by non-robust fence detection and can handle only static occluded scenes whose video is captured by constrained camera motion...
October 1, 2016: Journal of the Optical Society of America. A, Optics, Image Science, and Vision
https://www.readbyqxmd.com/read/27825759/pegylated-polypeptide-lipid-nanocapsules-to-enhance-the-anticancer-efficacy-of-erlotinib-in-non-small-cell-lung-cancer
#14
Jeonghwan Kim, Thiruganesh Ramasamy, Ju Yeon Choi, Ssang Tae Kim, Yu Seok Youn, Han-Gon Choi, Chul Soon Yong, Jong Oh Kim
In this study, a core-shell type polypeptide-based lipid nanocapsule was developed to enhance anticancer efficacy of erlotinib in non-small cell lung cancers. Mean particle size of PEGylated polypeptide-lipid nanocapsules (PLN) for erlotinib (ERL) delivery was ∼200nm with an effective surface charge of -20mV. Protective PEGylated polypeptide layer acted as a molecular fence and effectively controlled the diffusion of erlotinib from the lipid nanocapsule core, whereas pH-responsiveness of poly(L-aspartic acid) accelerated the release of erlotinib in acidic conditions...
November 2, 2016: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/27822974/the-effect-of-non-specific-tight-junction-modulators-on-the-transepithelial-transport-of-poorly-permeable-drugs-across-airway-epithelial-cells
#15
Maliheh Ghadiri, Paul M Young, Wolfgang Jarolimek, Georges E R Grau, Brian Oliver, Daniela Traini
The epithelial barrier in the respiratory system is a major obstacle for drug delivery to the systemic circulation both locally and systemically in the lung. Epithelial barrier hinders the transport of large macromolecules or polar drugs. Essential components of this epithelial fence are physical intercellular structures termed tight junctions. Therefore, modulating tight junctions can enhance paracellular transport across epithelial barrier. In this study, the effect of some of non-specific tight junction modulators (TJMs); (Sodium (Na) decanoate, oleic acid and ethyleneglycol-bis-(β-aminoethyl ether)-N, N'-tetraacetic acid (EGTA)) with established effect on intestinal tight junctions was evaluated for its effects on bronchial epithelial cells (Calu-3 cells)...
November 8, 2016: Journal of Drug Targeting
https://www.readbyqxmd.com/read/27822080/plant-wealth-of-a-sacred-grove-mallur-gutta-telangana-state-india
#16
Sateesh Suthari, Ramesh Kandagalta, Ajmeera Ragan, Vatsavaya S Raju
The Mallur Gutta (Hill) of Warangal district in Telangana state, India, reputed as a habitat for medicinal plants, was inventoried from 2009 to 2015 for its plant wealth through the traditional knowledge of the local people. The Hindu temples of Lord Sri Laxminarasimha Swamy and Lord Hanuman, and the ethnic worship of mahua trees indicated it was a sacred grove which was selected as a Medicinal Plants Conservation Area. The exploration of Mallur Gutta resulted in the enumeration and documentation of plant wealth representing 470 species of 318 genera pertaining to 95 families of vascular plants...
2016: International Journal of General Medicine
https://www.readbyqxmd.com/read/27811392/automatic-detection-of-mlc-relative-position-errors-for-vmat-using-the-epid-based-picket-fence-test
#17
Damianos Christophides, Alex Davies, Mark Fleckney
Multi-leaf collimators (MLCs) ensure the accurate delivery of treatments requiring complex beam fluences like intensity modulated radiotherapy and volumetric modulated arc therapy. The purpose of this work is to automate the detection of MLC relative position errors  ⩾0.5 mm using electronic portal imaging device-based picket fence tests and compare the results to the qualitative assessment currently in use. Picket fence tests with and without intentional MLC errors were measured weekly on three Varian linacs...
December 7, 2016: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/27806011/do-fencers-require-a-weapon-specific-approach-to-strength-and-conditioning-training
#18
Anthony N Turner, Chris Bishop, Jon Cree, Michael Edwards, Shyam Chavda, Paul Read, David Kirby
There are three types of weapon used in Olympic fencing: the épée, foil, and sabre. The aim of this study was to determine if fencers exhibited different physical characteristics across weapons. Seventy-nine male (n = 46) and female (n = 33) national standard fencers took part in this study. Fencers from each weapon (male and female), i.e., épée (n = 19 and 10), foil (n = 22 and 14), and sabre (n = 13 and 10) were (mean ± SD) 15.9 ± 0.7 years of age, 178.5 ± 7.9 cm tall, 67.4 ± 12.2 kg in mass and had 6...
October 26, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27796488/the-cattle-wolf-dilemma-interactions-among-three-protected-species
#19
Nir Becker, Yanay Farja
This paper utilizes economic valuation to offer a new perspective on livestock rancher-predator conflicts. While most studies have considered losses to the species directly involved, i.e., cattle and wolves (Canis lupus), we take into account other species that are threatened by efforts to protect livestock. In this case, vultures (Gyps fulvus) and gazelles (Gazella gazella), both endangered species, are either poisoned (vultures) or suffer from habitat fragmentation (gazelles) in the Upper Galilee region in Israel...
October 28, 2016: Environmental Management
https://www.readbyqxmd.com/read/27787368/living-donor-liver-transplantation-for-budd-chiari-syndrome-overcoming-a-troublesome-situation
#20
Cengiz Ara, Sami Akbulut, Volkan Ince, Serdar Karakas, Adil Baskiran, Sezai Yilmaz
BACKGROUND: The aim of the study was to report the detailed surgical techniques of living donor liver transplantation (LDLT) in patients with Budd-Chiari syndrome (BCS). METHODS: Demographic and surgical techniques characteristics of 39 patients with BCS who underwent LDLT were retrospectively reviewed. Thirty-two of them had native vena cava inferior (VCI) preservation and 6 had retrohepatic VCI resection with venous continuity established by cryopreserved VCI (n = 4) or aortic graft (n = 2)...
October 2016: Medicine (Baltimore)
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