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https://www.readbyqxmd.com/read/29308125/population-genetic-analysis-reveals-barriers-and-corridors-for-gene-flow-within-and-among-riparian-populations-of-a-rare-plant
#1
Tanya H Hevroy, Michael L Moody, Siegfried L Krauss
Landscape features and life-history traits affect gene flow, migration and drift to impact on spatial genetic structure of species. Understanding this is important for managing genetic diversity of threatened species. This study assessed the spatial genetic structure of the rare riparian Grevillea sp. Cooljarloo (Proteaceae), which is restricted to a 20 km2 region impacted by mining in the northern sandplains of the Southwest Australian Floristic Region, an international biodiversity hotspot. Within creek lines and floodplains, the distribution is largely continuous...
February 2018: AoB Plants
https://www.readbyqxmd.com/read/29299670/flexibility-is-the-key-metabolic-and-thermoregulatory-behaviour-in-a-small-endotherm
#2
Franz Langer, Nadine Havenstein, Joanna Fietz
Hibernation is the most effective way to reduce thermoregulatory costs during periods of unfavourable environmental conditions. In preparation to hibernation, fat-storing hibernators accumulate large quantities of body fat, which increases their locomotor costs and also the risk of predation. As a consequence, there should be a strong selective pressure to restrict pre-hibernation fattening to a short-time period before the onset of hibernation. The edible dormouse (Glis glis) is characterized by having adapted its whole life history to the irregularly occurring mast-seeding pattern of the European beech (Fagus sylvaticus)...
January 3, 2018: Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology
https://www.readbyqxmd.com/read/29288047/sway-regularity-and-sway-activity-in-older-adults-upright-stance-are-differentially-affected-by-dual-task
#3
Margarita Drozdova-Statkevičienė, Vida Janina Česnaitienė, Kazimieras Pukėnas, Oron Levin, Nerijus Masiulis
Age-related changes in postural control are attributed to visual, vestibular and proprioceptive dysfunctions, muscle weakness, and reduced availability of neural resources required for efficient balance control. Concurrent performance of complex cognitive tasks while standing or walking is expected to increase balance instability due to under-recruitment of brain resources and insufficient allocation of attention to the postural task. Both balance instability and attentional control of movements can, nonetheless, be determined from the center of pressure (CoP) measurements by examining the effects of dual-task on the amount of sway activity (as measured by CoP velocity - Vcop) and the statistical regularity of the CoP trajectory (the wavelet entropy of the signal - WEcop)...
December 26, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/29275159/anti-photoaging-effects-of-chitosan-oligosaccharide-in-ultraviolet-irradiated-hairless-mouse-skin
#4
Song-Zhi Kong, Dong-Dong Li, Hui Luo, Wen-Jie Li, Yong-Mei Huang, Ji-Cheng Li, Zhang Hu, Na Huang, Min-Hui Guo, Yao Chen, Si-Dong Li
Skin photoaging (SP) is a premature skin-aging damage after repeated exposure to ultraviolet (UV) radiation, mainly characterized by oxidative stress and inflammatory disequilibrium, which makes skin show the typical symptoms of photoaging such as coarse wrinkling, dryness, irregular pigmentation and laxity. Chitosan oligosaccharide (COS), a natural polysaccharide with good humectant property, is the depolymerized product of chitosan with various biological activities, among which the antioxidant and anti-inflammatory effects have been frequently reported in recent years...
December 21, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/29258261/oligofructose-provides-laxation-for-irregularity-associated-with-low-fiber-intake
#5
Randal K Buddington, Cavita Kapadia, Franka Neumer, Stephan Theis
Inadequate dietary fiber intake contributes to the prevalent irregularity and constipation in Western countries. Although eating adequate amounts of fibers from fiber-rich foods, foods with added fibers and dietary fiber supplements is considered the first option for improving laxation, the efficacy can vary among types of fibers. The present study is a randomized control trial that included healthy adult participants with ≤3 bowel movements/week and a habitual low dietary fiber intake in a parallel design to evaluate the benefits for laxation by supplementing the daily diet with oligofructose (Orafti® P95; OF), a fermentable source of fiber and established prebiotic (n = 49); maltodextrin was the placebo (n = 48)...
December 18, 2017: Nutrients
https://www.readbyqxmd.com/read/29245313/ct-diagnosis-and-differentiation-of-benign-and-malignant-varieties-of-solitary-fibrous-tumor-of-the-pleura
#6
Xiaofang You, Xiwen Sun, Chunyan Yang, Yong Fang
To investigate computed tomography (CT) characteristics of benign and malignant solitary fibrous tumors of the pleura (SFTPs).Preoperative CTs for 60 SFTP cases (49 benign and 11 malignant) with subsequently confirmed diagnoses were retrospectively analyzed.Tumor morphologies included mounded or mushroom umbrella-shape (19 cases, 31.7%), quasi-circular or oval-shape (30 cases, 50%), and growth resembling a casting mould (12 cases, 20%). Maximum tumor diameters were 1.1 to 18.9 cm (average: 6.4 ± 4.8 cm)...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29239289/immune-complex-detection-in-saliva-samples-an-innovative-proposal-for-the-diagnosis-of-human-strongyloidiasis
#7
L R Bosqui, A L R Gonçalves, M R F Gonçalves-Pires, W R Pavanelli, I Conchon-Costa, J M Costa-Cruz, I N Costa
Human strongyloidiasis is caused by helminth Strongyloides stercoralis. It has a worldwide distribution, often neglected and cause of severe morbidity. The parasitological diagnosis is hindered by the low and irregular amount of larvae in feces. The goal of the present study was to detect IgG and IgG immune complex using conventional serum samples and saliva as alternative samples. We collected samples from 60 individuals, namely: group I composed of 30 healthy individuals; and group II composed of 30 individuals eliminating S...
December 14, 2017: Parasitology
https://www.readbyqxmd.com/read/29223999/two-years-follow-up-of-patients-with-abnormal-uterine-bleeding-after-insertion-of-the-levonorgestrel-releasing-intrauterine-system
#8
Numan Cim, Sunullah Soysal, Sena Sayan, Begum Yildizhan, Erbil Karaman, Orkun Cetin, Harun Egemen Tolunay, Recep Yildizhan
AIM: To evaluate the efficacy and safety of levonorgestrel-releasing intrauterine system (LNG-IUS) in the long-term treatment of heavy menstrual blood loss in women unrelated to intrauterine pathology. METHODS: One hundred and six parous women aged 33-48 years with recurrent heavy menstrual bleeding (HMB) participated in this study. The women were followed up for 24 months and were assessed for intensity of bleeding both for pre- and post-insertion periods. An LNG-IUS was inserted in each patient within 7 days of the start of menstrual flow...
December 8, 2017: Gynecologic and Obstetric Investigation
https://www.readbyqxmd.com/read/29219020/correlation-of-mri-appearance-of-autologous-chondrocyte-implantation-in-the-ankle-with-clinical-outcome
#9
Keith W Chan, Richard D Ferkel, Brian Kern, Sarah S Chan, Gregory R Applegate
The objective of this study was to characterize magnetic resonance imaging (MRI) findings and correlate with clinical results in patients who underwent autologous chondrocyte implantation (ACI) of osteochondral lesions of the talus (OLT). METHODS: Twenty-four grafts were evaluated at a mean 65.8 months after ACI for OLT. MRI was performed on a 1.5-T GE scanner using multiple sequences. Graft appearance was compared with preoperative MRI and evaluated for 6 criteria: defect fill, surface regularity, signal pattern, bone marrow edema, subchondral plate irregularity, and presence of cystic lesions...
January 2018: Cartilage
https://www.readbyqxmd.com/read/29205140/autologous-fat-transplantation-for-secondary-breast-reconstruction-our-experience
#10
F Simonacci, M P Grieco, N Bertozzi, E Raposio
BACKGROUND: Autologous fat transplantation is used after breast reconstruction to improve the breast profile. There are a variety of different methods used for fat harvesting, preparation, and reinjection. This study describes the specific techniques we used in this series of autologous fat transplantations in breast reconstruction patients and reports their outcomes compared with other studies in the literature. PATIENTS AND METHODS: At the University Hospital of Parma between May 2012 and December 2016, we performed 53 autologous fat transplantations for secondary breast reconstruction patients with an average age of 49 years (range: 34-65 y)...
May 2017: Il Giornale di Chirurgia
https://www.readbyqxmd.com/read/29193209/cicatricial-organizing-pneumonia-mimicking-a-fibrosing-interstitial-pneumonia
#11
Andrew Churg, Joanne L Wright, AnaMaria Bilawich
AIMS: Organizing pneumonia (OP) is composed of loose granulation tissue plugs in distal airspaces; these disappear with steroid treatment. Recently a variant labeled "cicatricial" OP has been described in which the granulation tissue organized to much denser fibrous tissue but still retained the usual pattern of OP. Here we report 10 patients thought to have an interstitial lung disease, and who on biopsy had a variant of cicatricial OP characterized by linear bands or small nodular masses of dense fibrous tissue that does not resemble ordinary OP...
November 29, 2017: Histopathology
https://www.readbyqxmd.com/read/29178429/technical-note-defining-cyclotron-based-clinical-scanning-proton-machines-in-a-fluka-monte-carlo-system
#12
Francesca Fiorini, Niek Schreuder, Frank Van den Heuvel
PURPOSE: Cyclotron-based pencil beam scanning (PBS) proton machines represent nowadays the majority and most affordable choice for proton therapy facilities, however their representation in Monte Carlo (MC) codes is more complex than passively scattered proton system or synchrotron based PBS machines. This is because degraders are used to decrease the energy from the cyclotron maximum energy to the desired energy, resulting in a unique spot size, divergence and energy spread depending on the amount of degradation...
November 27, 2017: Medical Physics
https://www.readbyqxmd.com/read/29171847/a-multifunctional-ni-ii-coordination-polymer-synthesis-crystal-structure-and-applications-as-a-luminescent-sensor-electrochemical-probe-and-photocatalyst
#13
Jing-Wang Cui, Suo-Xia Hou, Yue-Hua Li, Guang-Hua Cui
Herein, a nickel coordination polymer (CP 1), {Ni(1,4-bib)1.5(TPA-Cl2)·H2O}n (1,4-bib = 1,4-bis(1H-imidazol-1-yl)benzene, H2TPA-Cl2 = 2,5-dichloro-terephthalic acid), has been synthesized under solvothermal conditions. The structure of CP 1 is a 3D 3-fold interpenetrating framework with the sqc12 topology. The thermal stability and luminescence properties of CP 1 were investigated. Scanning electron microscopy (SEM) images of this material display that it possesses an irregular block 3D structure. Interestingly, CP 1 can serve as a multifunctional material via its luminescence sensing, electrochemical sensing, and photocatalytic properties...
November 24, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29149444/morphology-molecular-structure-and-stable-carbon-isotopic-composition-of-black-carbon-bc-in-urban-topsoils
#14
Yutong Zong, Qing Xiao, Shenggao Lu
Urban soils contain significant amounts of black carbon (BC) from biomass and fossil fuel combustion and regard to be a pool of BC. BC in urban soils has multiple effects on environmental processes in urban system, such as global climate change, air quality, and public health. Urban topsoil samples (0-10 cm) were collected from Anshan, Liaoning Province, northeast China, which is one of the most important old steel industrial bases in China. The BC in urban topsoils was extracted using the density method. Their chemical composition, morphology, molecular structure, and stable carbon isotopic composition were examined using elemental analysis, scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDS), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), X-ray diffraction (XRD), and stable carbon isotope (δ(13)C)...
November 17, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29138912/long-term-follow-up-after-non-operative-management-of-blunt-splenic-and-liver-injuries-a-questionnaire-based-survey
#15
Peter Moreno, Matthias Von Allmen, Tobias Haltmeier, Daniel Candinas, Beat Schnüriger
BACKGROUND: Non-operative management (NOM) of blunt splenic or liver injuries (solid organ injury, SOI) has become the standard of care in hemodynamically stable patients. However, the incidence of long-term symptoms in these patients is currently not known. The aim of this study was to assess long-term symptoms in patients undergoing successful NOM (sNOM) for SOI. METHODS: Long-term posttraumatic outcomes including chronic abdominal pain, irregular bowel movements, and recurrent infections were assessed using a specifically designed questionnaire and analyzed by univariable analysis...
November 14, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/29132930/a-novel-algorithm-increases-the-delivery-of-effective-cardiac-resynchronization-therapy-during-atrial-fibrillation-the-crtee-randomized-cross-over-trial
#16
Christopher J Plummer, Christopher M Frank, Zsolt Bári, Yahya S Al Hebaishi, Ruth Nicholson Klepfer, Robert W Stadler, Subham Ghosh, Shufeng Liu, Suneet Mittal
BACKGROUND: Cardiac resynchronization therapy (CRT) requires a high % of ventricular pacing (%Vp) to maximize its clinical benefits. Atrial fibrillation (AF) has been shown to reduce %Vp in CRT due to competition with irregular intrinsic atrio-ventricular (AV) conduction. We report the results of a prospective randomized cross-over trial evaluating the amount of effective CRT delivered during AF with a novel algorithm (eCRTAF). OBJECTIVE: To determine whether eCRTAF increases the amount of effective CRT delivered during AF when compared to a currently available rate regularization algorithm...
November 10, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29131593/formulation-and-composition-effects-in-phase-transitions-of-emulsions-co-stabilized-by-cellulose-nanofibrils-and-an-ionic-surfactant
#17
Siqi Huan, Shingo Yokota, Long Bai, Mariko Ago, Maryam Borghei, Tetsuo Kondo, Orlando J Rojas
Cellulose nanofibrils (CNF) offer great prospects as a natural stabilizer of colloidal dispersions and complex fluids for application in food, pharma, and cosmetics. In this study, an ionic surfactant (sodium dodecyl sulfate, SDS) was used as emulsifier of oil-in-water and water-in-oil emulsions that were further co-stabilized by addition of CNF. The adsorption properties of SDS in both, CNF dispersions and emulsions, as well as the influence of composition (CNF and SDS concentration) and formulation (ionic strength, oil and CNF types) on the phase behavior were elucidated and described in the framework of Windsor systems...
November 13, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/29128974/estimating-the-fluctuation-of-lake-hulun-china-during-1975-2015-from-satellite-altimetry-data
#18
Ying Liu, Hui Yue
Lake level, area, and volume changes can describe the fluctuation of water bodies. In this study, ICESat/Hydroweb and Landsat data recorded with irregularly time intervals from 1975 to 2015 were used to examine changes in lake level and area which were combined to indirectly estimate water volume variations of Lake Hulun. The time series of lake level, area, and volume variations of Lake Hulun exhibited a fluctuating trend from 1975 to 1984 and the mean value were about 542.57 m, 2065.76 km(2), and - 0.045 km(3), respectively and an increasing trends showed during 1984-2000...
November 11, 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/29128728/novel-synthesis-of-cyano-functionalized-mesoporous-silica-nanospheres-msn-from-coal-fly-ash-for-removal-of-toxic-metals-from-wastewater
#19
Bangda Wang, Yuexi Zhou, Lei Li, Hui Xu, Yinglong Sun, Yi Wang
Trace amounts of toxic metals are usually difficult to be purified by conventional chemical precipitation or physical adsorption in wastewater. In this study, in order to realize high-value utilization of coal fly ash for wastewater purification, a novel method was applied to prepare high-performance mesoporous silica materials from coal fly ash. In comparison with a commonly used method, characterizations revealed that the new method obtained mesoporous silica nanospheres with uniformly distributed cyano groups (denoted by MSN), while the common method only obtained irregular sponge-like microstructure (denoted by ISM)...
November 1, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29111057/resol-based-chitosan-nano-hydroxyapatite-nanoensemble-for-effective-bone-tissue-engineering
#20
Mohammad Shakir, Reshma Jolly, Aijaz Ahmed Khan, Syed Sayeed Ahmed, Sharique Alam, Mohd Ahmar Rauf, Mohd Owais, Mohd Ahmadullah Farooqi
It is the first report where different amounts of resol resin (RS) were incorporated with chitosan-hydroxyapatite (CHA) to develop a triconstituent nanoensemble CHA-RS(0.5,1,2), via simple co-precipitation method. The results of SEM, TEM, TGA and mechanical analysis revealed irregular interconnected rough morphology with homogenous distribution of needle shaped particles having average size ranging between 12 and 19nm, possessing higher thermal stability and mechanical strength, respectively relative to CHA (binary) nanocomposite...
January 1, 2018: Carbohydrate Polymers
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