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https://www.readbyqxmd.com/read/29143490/rock-glaciers-in-crystalline-catchments-hidden-permafrost-related-threats-to-alpine-headwater-lakes
#1
Boris P Ilyashuk, Elena A Ilyashuk, Roland Psenner, Richard Tessadri, Karin A Koinig
A global warming-induced transition from glacial to periglacial processes has been identified in mountainous regions around the world. Degrading permafrost in pristine periglacial environments can produce acid rock drainage (ARD) and cause severe ecological damage in areas underlain by sulfide-bearing bedrock. Limnological and paleolimnological approaches were used to assess and compare ARDs generated by rock glaciers, a typical landform of the mountain permafrost domain, and their effects on alpine headwater lakes with similar morphometric features and underlying bedrock geology, but characterized by different intensities of frost action in their catchments during the year...
November 15, 2017: Global Change Biology
https://www.readbyqxmd.com/read/29143382/the-effect-of-resveratrol-on-the-developmental-competence-of-porcine-oocytes-vitrified-at-germinal-vesicle-stage
#2
Ecs Santos, R Appeltant, T Q Dang-Nguyen, J Noguchi, H Kaneko, K Kikuchi, T Somfai
We tested the effects of resveratrol both as a pre-treatment and as a recovery treatment after warming during in vitro maturation (IVM) on the viability and developmental competence of porcine oocytes vitrified at the germinal vesicle stage. Pre-treatment before vitrification of oocytes for 3 hr with 2 μM resveratrol did not affect survival, oocyte maturation and embryo developmental competence to the blastocyst stage after parthenogenetic activation. However, supplementation of the medium with resveratrol during subsequent IVM after vitrification and warming significantly improved the ability of surviving oocytes to develop to the blastocyst stage, and this effect was observed only on vitrified, but not on non-vitrified oocytes...
November 16, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/29140407/targeted-treatment-of-yaws-with-household-contact-tracing-how-much-do-we-miss
#3
Louise Dyson, Michael Marks, Oliver M Crook, Oliver Sokana, Anthony W Solomon, Alex Bishop, David C W Mabey, T Déirdre Hollingsworth
Yaws is a disabling bacterial infection primarily found in warm and humid tropical areas. The World Health Organisation strategy mandates an initial round of total community treatment (TCT) with single-dose azithromycin followed either by further TCT or active case finding and treatment of cases and their contacts (the Morges strategy). We wish to investigate the effectiveness of the Morges strategy. We employ a stochastic household model to study the transmission of infection using data collected from a pre-TCT survey conducted in the Solomon Islands...
November 13, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/29133829/differential-responses-of-body-growth-to-artificial-warming-between-parasitoids-and-hosts-and-the-consequences-for-plant-seed-damage
#4
Xinqiang Xi, Yangheshan Yang, Xiaocheng Yang, Sören Nylin, Nico Eisenhauer, Shucun Sun
Temperature increase may disrupt trophic interactions by differentially changing body growth of the species involved. In this study, we tested whether the response of body growth to artificial warming (~2.2 °C) of a solitary koinobiont endo-parasitoid wasp (Pteromalus albipennis, Hymenoptera: Pteromalidae) differed from its main host tephritid fly (Tephritis femoralis, Diptera: Tephritidae; pre-dispersal seed predator), and whether the plant seed damage caused by wasp-parasitized and unparasitized maggots (larval flies) were altered by warming...
November 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29129397/environmental-baselines-and-reconstruction-of-atlantic-water-inflow-in-bj%C3%A3-rn%C3%A3-yrenna-sw-barents-sea-since-1800%C3%A2-ce
#5
Noortje Dijkstra, Juho Junttila, Steffen Aagaard-Sørensen
Metal concentrations, sediment properties and benthic foraminiferal assemblages were investigated in sediment cores in the SW Barents Sea, to reconstruct environmental baselines and natural variability of Atlantic Water inflow since 1800 CE. Metal concentrations correspond to no effect levels and do not influence the foraminifera. Increased Hg and Pb was linked to inflow of Atlantic Water. The data set is considered to reflect the pre-impacted environmental baseline and range in natural variability of the study area...
October 28, 2017: Marine Environmental Research
https://www.readbyqxmd.com/read/29129269/partial-two-thirds-nephrectomy-in-pigs-a-comparison-of-three-surgical-approaches
#6
Hai-Feng Liu, Wei-Jing Meng, Xiang-Dong Kong, Ge Bai, Hui Li, Jian-Tao Zhang, Hong-Gang Fan, Hong-Bin Wang
Partial (2/3) nephrectomy can be performed via the laparoscopic, retroperitoneal, and transperitoneal approach. Outcomes of the three approaches were compared in this study. 2/3 nephrectomy were performed in 21 healthy Bama miniature pigs (mean bodyweight 20.59±2.78kg). Pigs were divided into three groups: those that underwent 2/3 nephrectomy via laparoscopy (LN group, n=7), the retroperitoneal approach (RN group, n=7), or the transperitoneal approach (TN group, n=7). We monitored pre- and postoperative physiologic parameters, blood cell count, and stress and renal function biomarkers...
November 7, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/29126631/antioxidant-response-to-heat-stress-in-seagrasses-a-gene-expression-study
#7
O Tutar, L Marín-Guirao, J M Ruiz, G Procaccini
Seawater warming associated to the ongoing climate change threatens functioning and survival of keystone coastal benthic species such as seagrasses. Under elevated temperatures, the production of reactive oxygen species (ROS) is increased and plants must activate their antioxidant defense mechanisms to protect themselves from oxidative damage. Here we explore from a molecular perspective the ability of Mediterranean seagrasses to activate heat stress response mechanisms, with particular focus on antioxidants...
October 27, 2017: Marine Environmental Research
https://www.readbyqxmd.com/read/29118133/climate-change-and-bird-reproduction-warmer-springs-benefit-breeding-success-in-boreal-forest-grouse
#8
Per Wegge, Jørund Rolstad
Global warming is predicted to adversely affect the reproduction of birds, especially in northern latitudes. A recent study in Finland inferred that declining populations of black grouse, Tetrao tetrix, could be attributed to advancement of the time of mating and chicks hatching too early-supporting the mismatch hypothesis. Here, we examine the breeding success of sympatric capercaillie, T. urogallus, and black grouse over a 38-year period in southeast Norway. Breeding season temperatures increased, being most pronounced in April...
November 15, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/29109686/ketone-diester-ingestion-impairs-time-trial-performance-in-professional-cyclists
#9
Jill J Leckey, Megan L Ross, Marc Quod, John A Hawley, Louise M Burke
We investigated the effect of pre- "race" ingestion of a 1,3-butanediol acetoacetate diester on blood ketone concentration, substrate metabolism and performance of a cycling time trial (TT) in professional cyclists. In a randomized cross-over design, 10 elite male cyclists completed a ~31 km laboratory-based TT on a cycling ergometer programmed to simulate the 2017 World Road Cycling Championships course. Cyclists consumed a standardized meal [2 g/kg body mass (BM) carbohydrate (CHO)] the evening prior to a trial day and a CHO breakfast (2 g/kg BM CHO) with 200 mg caffeine on the morning of a trial day...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29098040/differences-in-liquid-cloud-droplet-effective-radius-and-number-concentration-estimates-between-modis-collections-5-1-and-6-over-global-oceans
#10
John Rausch, Kerry Meyer, Ralf Bennartz, Steven Platnick
Differences in cloud droplet effective radius and cloud droplet number concentration (CDNC) estimates inferred from the Aqua MODIS Collections 5.1 and 6 cloud products (MYD06) are examined for warm clouds over global oceans for the year 2008. Individual pixel level retrievals for both collections are aggregated to 1° × 1° and compared globally and regionally for the three main spectral channel pairs used for MODIS cloud optical property retrievals. Comparisons between both collections are performed for cases in which all three effective radii retrievals are classified by the MODIS Cloud Product as valid...
2017: Atmospheric Measurement Techniques
https://www.readbyqxmd.com/read/29082635/changing-the-size-of-a-mirror-reflected-hand-does-not-affect-pain-perception-a-repeated-measures-study-on-healthy-human-participants
#11
P G Wittkopf, D M Lloyd, M I Johnson
BACKGROUND: Studies suggest that observing magnified and minified body parts using mirrors, lenses and virtual reality may affect pain perception. However, the direction of effect varies between studies. The aim of the present study was to evaluate the effect of observing a normal-sized, magnified and minified reflection of a hand on perceptual embodiment and contact-heat stimuli. METHODS: Participants (n = 46) observed a normal-sized, magnified and minified reflection of the hand and a no-reflection condition while performing synchronized finger movements for 3 min (adaptive phase)...
October 30, 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/29058624/husk-to-caryopsis-adhesion-in-barley-is-influenced-by-pre-and-post-anthesis-temperatures-through-changes-in-a-cuticular-cementing-layer-on-the-caryopsis
#12
M Brennan, T Shepherd, S Mitchell, C F E Topp, S P Hoad
BACKGROUND: At ripeness, the outer husk of "covered" barley grains firmly adheres to the underlying caryopsis. A cuticular cementing layer on the caryopsis is required for husk adhesion, however the quality of adhesion varies significantly among cultivars which produce the cementing layer, resulting in the economically important malting defect, grain skinning. The composition of the cementing layer, and grain organ development have been hypothesised to influence the quality of husk adhesion...
October 23, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/29056479/effect-of-combined-stress-salinity-and-temperature-in-european-sea-bass-dicentrarchus-labrax-osmoregulatory-processes
#13
Waliullah Masroor, Emilie Farcy, Romain Gros, Catherine Lorin-Nebel
European sea bass Dicentrarchus labrax undertake seasonal migrations to estuaries and lagoons that are characterized by fluctuations in environmental conditions. Their ability to cope with these unstable habitats is undeniable, but it is still not clear how and to what extent salinity acclimation mechanisms are affected at temperatures higher than in the sea. In this study, juvenile sea bass were pre-acclimated to seawater (SW) at 18°C (temperate) or 24°C (warm) for 2weeks and then transferred to fresh water (FW) or SW at the respective temperature...
October 19, 2017: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/29045642/patient-and-tumor-characteristics-and-their-influence-on-early-therapy-persistence-with-letrozole-in-postmenopausal-patients-with-early-breast-cancer
#14
N Nabieva, S Kellner, T Fehm, L Häberle, J de Waal, M Rezai, B Baier, G Baake, H-C Kolberg, M Guggenberger, M Warm, N Harbeck, R Wuerstlein, J-U Deuker, P Dall, B Richter, G Wachsmann, C Brucker, J W Siebers, N Fersis, T Kuhn, C Wolf, H-W Vollert, G-P Breitbach, W Janni, R Landthaler, A Kohls, D Rezek, T Noesselt, G Fischer, S Henschen, T Praetz, V Heyl, T Kühn, T Krauss, C Thomssen, A Hohn, H Tesch, C Mundhenke, A Hein, C Rauh, C M Bayer, A Jacob, K Schmidt, E Belleville, S Y Brucker, S Kümmel, M W Beckmann, D Wallwiener, P Hadji, P A Fasching
Background: Patients' compliance and persistence with endocrine treatment has a significant effect on the prognosis in early breast cancer (EBC). The purpose of this analysis was to identify possible reasons for non-persistence, defined as premature cessation of therapy, on the basis of patient and tumor characteristics in individuals receiving adjuvant treatment with letrozole. Patients and methods: The EvAluate-TM Study is a prospective, multicenter, noninterventional study in which treatment with the aromatase inhibitor letrozole was evaluated in postmenopausal women with hormone receptor-positive EBC in the early therapy phase...
October 10, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/29037655/differences-in-pressure-pain-threshold-among-men-and-women-after-foam-rolling
#15
Scott W Cheatham, Russell Baker
BACKGROUND: Rehabilitation professionals often prescribe foam rolling as an intervention to augment other manual therapies or as a warm-up or recovery after athletic activity. Currently, there is a gap in the literature regarding how foam rolling effects the pressure pain threshold (PPT) among men and women. PURPOSE: The purpose of this study was to examine the immediate effects of a foam rolling intervention on the ipsilateral agonist, antagonist, and contralateral muscle group PPT among men and women...
October 2017: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/29027645/preventive-effect-of-pre-warming-hot-compress-and-ph-adjustment-in-oxaliplatin-induced-venous-pain
#16
Hitoshi Kawazoe, Satomi Sumikawa, Kana Nakauchi, Yoshihiro Yakushijin, Yuji Yamamoto, Yuji Watanabe, Akihiro Tanaka, Hiroaki Araki
Background Venous pain induced by peripheral intravenous administration of oxaliplatin remains clinically unresolved. Objective The aim of this study was to determine the efficacy of comprehensive intervention care for venous pain in colorectal cancer patients receiving oxaliplatin. Setting A Japanese tertiary hospital. Method We treated all outpatients after April 2012 with comprehensive intervention care including pre-warming of the oxaliplatin solution, use of a hot compress, and pH adjustment by combination with dexamethasone...
October 13, 2017: International Journal of Clinical Pharmacy
https://www.readbyqxmd.com/read/29026172/mitochondrial-glycerol-3-phosphate-facilitates-bumblebee-pre-flight-thermogenesis
#17
Stewart W C Masson, Christopher P Hedges, Jules B L Devaux, Crystal S James, Anthony J R Hickey
Bumblebees (Bombus terrestris) fly at low ambient temperatures where other insects cannot, and to do so they must pre-warm their flight muscles. While some have proposed mechanisms, none fully explain how pre-flight thermogenesis occurs. Here, we present a novel hypothesis based on the less studied mitochondrial glycerol 3-phosphate dehydrogenase pathway (mGPDH). Using calorimetry, and high resolution respirometry coupled with fluorimetry, we report substrate oxidation by mGPDH in permeabilised flight muscles operates, in vitro, at a high flux, even in the absence of ADP...
October 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28974678/crossing-the-threshold-of-ultrafast-laser-writing-in-bulk-silicon
#18
Margaux Chanal, Vladimir Yu Fedorov, Maxime Chambonneau, Raphaël Clady, Stelios Tzortzakis, David Grojo
An important challenge in the field of three-dimensional ultrafast laser processing is to achieve permanent modifications in the bulk of silicon and narrow-gap materials. Recent attempts by increasing the energy of infrared ultrashort pulses have simply failed. Here, we establish that it is because focusing with a maximum numerical aperture of about 1.5 with conventional schemes does not allow overcoming strong nonlinear and plasma effects in the pre-focal region. We circumvent this limitation by exploiting solid-immersion focusing, in analogy to techniques applied in advanced microscopy and lithography...
October 3, 2017: Nature Communications
https://www.readbyqxmd.com/read/28974425/comparison-of-treatment-effect-across-varying-severities-of-meibomian-gland-dropout
#19
Philip R K Turnbull, Stuti L Misra, Jennifer P Craig
PURPOSE: Better understanding of the pathophysiology of meibomian gland dysfunction (MGD) has provided the opportunity to develop treatments which could be tailored for specific presentations of MGD. This study sought to directly compare treatment effectiveness for three current therapies across differing levels of MG dropout. METHODS: Subjects (n=81), grouped by infrared meibography dropout proportions, into either no (control), mild, or pronounced MG dropout, were randomised to receive treatment with a latent heat device (n=25), liposomal spray (n=28), or heated warm compress (n=28)...
September 30, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28965928/does-pre-exposure-to-warming-conditions-increase-mytilus-galloprovincialis-tolerance-to-hg-contamination
#20
Rosa Freitas, Francesca Coppola, Bruno Henriques, Fredrick Wrona, Etelvina Figueira, Eduarda Pereira, Amadeu M V M Soares
The degree to which marine invertebrate populations can tolerate extreme weather events, such as short-term exposure to high temperatures, and the underlying biochemical response mechanisms are not yet fully understood. Furthermore, scarce information is available on how marine organisms respond to the presence of pollutants after exposure to heat stress conditions. Therefore, the present study aimed to understand how the mussel Mytilus galloprovincialis responds to Hg pollution after pre-exposure to warming conditions...
December 2017: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
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