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https://www.readbyqxmd.com/read/29138307/microdiversity-of-an-abundant-terrestrial-bacterium-encompasses-extensive-variation-in-ecologically-relevant-traits
#1
Alexander B Chase, Ulas Karaoz, Eoin L Brodie, Zulema Gomez-Lunar, Adam C Martiny, Jennifer B H Martiny
Much genetic diversity within a bacterial community is likely obscured by microdiversity within operational taxonomic units (OTUs) defined by 16S rRNA gene sequences. However, it is unclear how variation within this microdiversity influences ecologically relevant traits. Here, we employ a multifaceted approach to investigate microdiversity within the dominant leaf litter bacterium, Curtobacterium, which comprises 7.8% of the bacterial community at a grassland site undergoing global change manipulations. We use cultured bacterial isolates to interpret metagenomic data, collected in situ over 2 years, together with lab-based physiological assays to determine the extent of trait variation within this abundant OTU...
November 14, 2017: MBio
https://www.readbyqxmd.com/read/29109545/the-lunar-core-can-be-a-major-reservoir-for-volatile-elements-s-se-te-and-sb
#2
Edgar S Steenstra, Yanhao Lin, Dian Dankers, Nachiketa Rai, Jasper Berndt, Sergei Matveev, Wim van Westrenen
The Moon bears a striking compositional and isotopic resemblance to the bulk silicate Earth (BSE) for many elements, but is considered highly depleted in many volatile elements compared to BSE due to high-temperature volatile loss from Moon-forming materials in the Moon-forming giant impact and/or due to evaporative loss during subsequent magmatism on the Moon. Here, we use high-pressure metal-silicate partitioning experiments to show that the observed low concentrations of volatile elements sulfur (S), selenium (Se), tellurium (Te), and antimony (Sb) in the silicate Moon can instead reflect core-mantle equilibration in a largely to fully molten Moon...
November 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29104451/quantifying-the-3-dimensional-shape-of-lunar-regolith-particles-using-x-ray-computed-tomography-and-scanning-electron-microscopy-at-sub-%C3%AE-resolution
#3
Ann N Chiaramonti, Jay D Goguen, Edward J Garboczi
No abstract text is available yet for this article.
July 2017: Microscopy and Microanalysis
https://www.readbyqxmd.com/read/29092488/a-spinner-magnetometer-for-large-apollo-lunar-samples
#4
M Uehara, J Gattacceca, Y Quesnel, C Lepaulard, E A Lima, M Manfredi, P Rochette
We developed a spinner magnetometer to measure the natural remanent magnetization of large Apollo lunar rocks in the storage vault of the Lunar Sample Laboratory Facility (LSLF) of NASA. The magnetometer mainly consists of a commercially available three-axial fluxgate sensor and a hand-rotating sample table with an optical encoder recording the rotation angles. The distance between the sample and the sensor is adjustable according to the sample size and magnetization intensity. The sensor and the sample are placed in a two-layer mu-metal shield to measure the sample natural remanent magnetization...
October 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/29080754/bovine-chronic-besnoitiosis-in-a-calf-characterization-of-a-novel-b-besnoiti-isolate-from-an-unusual-case-report
#5
C Diezma-Díaz, A Jiménez-Meléndez, M Fernández, D Gutiérrez-Expósito, P García-Lunar, L M Ortega-Mora, J A Pérez-Salas, J Blanco-Murcia, I Ferre, G Álvarez-García
Bovine besnoitiosis, caused by the apicomplexan Besnoitia besnoiti, is a chronic and debilitating disease characterized by cutaneous and systemic manifestations that primarily affects adult beef cattle. Previous studies have reported that clinical besnoitiosisis is rare in calves. However, we isolated B. besnoiti from a chronically infected calf for the first time. The identity of the Besnoitia species was determined after parasite isolation and molecular genotyping. According to the results obtained in vitro the new isolate, named as Bb-Spain3, was characterized in a reproducible in vitro model and was categorized as a low invader and low prolific isolate with a slower lytic cycle compared to Bb-Spain 1 isolate...
November 30, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/29075573/clinimetrics-of-the-upright-motor-control-test-in-chronic-stroke
#6
Frances Rom M Lunar, Edward James R Gorgon, Rolando T Lazaro
INTRODUCTION: Insufficient literature exists regarding the clinimetric properties of the Upright Motor Control Test Knee Extension and Flexion subtests (UMCT-KE and UMCT-KF, respectively). This study examined the interrater and test-retest reliability of these subtests, and determined the relationship between the UMCT-KE and a clinical measure of muscle function in a sample of adults with chronic stroke. METHODS: Three raters independently administered the UMCT-KE and UMCT-KF on adults with chronic stroke with spasticity/abnormal movement patterns...
October 2017: Brain and Behavior
https://www.readbyqxmd.com/read/29073236/prevalence-of-peripheral-artery-disease-pad-and-factors-associated-an-epidemiological-analysis-from-the-population-based-screening-pre-diabetes-and-type-2-diabetes-spredia-2-study
#7
V Cornejo Del Río, J Mostaza, C Lahoz, V Sánchez-Arroyo, C Sabín, S López, P Patrón, P Fernández-García, B Fernández-Puntero, D Vicent, L Montesano-Sánchez, F García-Iglesias, T González-Alegre, E Estirado, F Laguna, C de Burgos-Lunar, P Gómez-Campelo, J C Abanades-Herranz, J M de Miguel-Yanes, M A Salinero-Fort
AIM: To describe the prevalence of Peripheral Artery Disease (PAD) in a random population sample and to evaluate its relationship with Mediterranean diet and with other potential cardiovascular risk factors such as serum uric acid and pulse pressure in individuals ranged 45 to 74 years. METHODS: Cross-sectional analysis of 1568 subjects (mean age 6.5 years, 43% males), randomly selected from the population. A fasting blood sample was obtained to determine glucose, lipids, and HbA1C levels...
2017: PloS One
https://www.readbyqxmd.com/read/29044004/research-on-the-influence-of-bilateral-oophorectomy-on-the-bmd-body-components-and-sex-hormone-of-women-during-the-perimenopause
#8
HaiLi Wang, Chuchu Wang, Lei Sun, Shiyuan Zhou, Fengyu Wang
To investigate the effect of bilateral oophorectomy on bone mineral density, body composition and sex hormone of peri-menopause women. 33 cases of peri-menopause women patients performed bilateral oophorectomy were chosen from xxx gynaecology and obstetrics department of xxx hospital from January 1st,2014 to Dec31th, 2014. And the 33 cases were taken as ovariectomy group. 35 women who were the naturally postmenopausal after menopause collected in clinic and in the same period with the patients of ovariectomy group were taken in control group...
July 2017: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29032595/born-at-the-right-time-a-conceptual-framework-linking-reproduction-development-and-settlement-in-reef-fish
#9
J S Shima, E G Noonburg, S E Swearer, S H Alonzo, C W Osenberg
Parents are expected to make decisions about reproductive timing and investment that maximize their own fitness, even if this does not maximize the fitness of each individual offspring. When offspring survival is uncertain, selection typically favors iteroparity, which means that offspring born at some times can be disadvantaged, while others get lucky. The eventual fate of offspring may be further modified by their own decisions. Are fates of offspring set by birthdates (i.e., determined by parents), or can offspring improve upon the cards they've been dealt? If so, do we see adaptive plasticity in the developmental timing of offspring? We evaluate these questions for a coral reef fish (the sixbar wrasse, Thalassoma hardwicke) that is characterized by extreme iteroparity and flexible larval development...
October 14, 2017: Ecology
https://www.readbyqxmd.com/read/29027811/prevention-of-human-papillomavirus-hpv-related-tumors-in-people-living-with-human-immunodeficiency-virus-hiv
#10
Mario Poljak, Anja Šterbenc, Maja M Lunar
In comparison to their HIV-negative counterparts, people living with HIV (PLWH) have a higher prevalence of human papillomavirus (HPV) infection in various anatomical sites coupled with increased HPV persistence, higher risk of HPV-related tumors, and faster disease progression. Areas covered: Gender-neutral prevention strategies for HPV-related cancers in PLWH discussed: ABC approach, HPV vaccination, antiretroviral treatment (ART), anal cancer screening, and smoking cessation. Gender specific strategies: cervical cancer screening reduces the incidence and mortality of cervical cancer and circumcision might reduce the risk of HPV infections in men...
October 20, 2017: Expert Review of Anti-infective Therapy
https://www.readbyqxmd.com/read/29020114/how-annual-course-of-photoperiod-shapes-seasonal-behavior-of-diploid-and-triploid-oysters-crassostrea-gigas
#11
Laura Payton, Mohamedou Sow, Jean-Charles Massabuau, Pierre Ciret, Damien Tran
In this work, we study if ploidy (i.e. number of copies of chromosomes) in the oyster Crassostrea gigas may introduce differences in behavior and in its synchronization by the annual photoperiod. To answer to the question about the effect of the seasonal course of the photoperiod on the behavior of C. gigas according to its ploidy, we quantified valve activity by HFNI valvometry in situ for 1 year in both diploid and triploid oysters. Chronobiological analyses of daily, tidal and lunar rhythms were performed according the annual change of the photoperiod...
2017: PloS One
https://www.readbyqxmd.com/read/28993497/marine-biorhythms-bridging-chronobiology-and-ecology
#12
Martin Bulla, Thomas Oudman, Allert I Bijleveld, Theunis Piersma, Charalambos P Kyriacou
Marine organisms adapt to complex temporal environments that include daily, tidal, semi-lunar, lunar and seasonal cycles. However, our understanding of marine biological rhythms and their underlying molecular basis is mainly confined to a few model organisms in rather simplistic laboratory settings. Here, we use new empirical data and recent examples of marine biorhythms to highlight how field ecologists and laboratory chronobiologists can complement each other's efforts. First, with continuous tracking of intertidal shorebirds in the field, we reveal individual differences in tidal and circadian foraging rhythms...
November 19, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28989878/prevalence-of-metabolic-syndrome-markers-among-women-at-1-year-postpartum-as-per-prepregnancy-body-mass-index-status-a-longitudinal-study
#13
Neha A Kajale, Vaman Khadilkar, Shashi A Chiplonkar, Raja Padidela, Anuradha V Khadilkar
INTRODUCTION: Maternal body composition (BC) changes during lactation. Increased prepregnancy obesity is associated with poor obstetric outcomes. The aim was to study changes in maternal BC postpartum (PP) to 1-year PP with reference to their prepregnancy body mass index (BMI) status. METHODS: The study design was a 1-year follow-up study. Sixty-five apparently healthy primiparous women (28.6 ± 3.4 years delivered full-term infants) were randomly selected from December 2010 to June 2013 and postclassified on the basis of their prepregnancy BMI status...
September 2017: Indian Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28988694/do-textiles-impact-dxa-bone-density-or-body-composition-results
#14
E Siglinsky, N Binkley, D Krueger
External artifacts can confound dual-energy X-ray absorptiometry (DXA) measurements. It is often accepted that garments free of metal do not affect DXA results; however, little data exist in this regard. It is plausible that some textiles absorb radiation and thereby alter DXA results. We hypothesized that some dense or synthetic textiles, for example, reflective materials, might alter DXA-measured bone and soft tissue mass. Hologic and GE Lunar spine phantoms and a Bioclinica prototype total body phantom were imaged on a GE Lunar iDXA and Prodigy densitometer...
October 5, 2017: Journal of Clinical Densitometry
https://www.readbyqxmd.com/read/28981004/non-covalent-interactions-in-the-multicomponent-crystal-of-1-aminocyclopentane-carboxylic-acid-oxalic-acid-and-water-a-crystallographic-and-a-theoretical-approach
#15
Asiloé J Mora, Lusbely M Belandria, Gerzon E Delgado, Luis E Seijas, Angel Lunar, Rafael Almeida
Single-crystal X-ray diffraction and quantum mechanical theories were used to examine in detail the subtle nature of non-covalent interactions in the [2:1:1] multicomponent crystal of 1,1-aminocyclopentanecarboxylic acid:oxalic acid:water. The crystal, which is a hydrate salt of the amino acid with the hydrogen-oxalate ion, also contains the zwitterion of the amino acid in equal proportions. It was found that a dimeric cation [Acc5(Z)...Acc5(C)](+) bonded by an O-H...O hydrogen bond exists due to a charge transfer between acid and carboxylate groups...
October 1, 2017: Acta Crystallographica Section B, Structural Science, Crystal Engineering and Materials
https://www.readbyqxmd.com/read/28975432/calcium-and-vitamin-d-fortified-milk-reduces-bone-turnover-and-improves-bone-density-in-postmenopausal-women-over-1%C3%A2-year
#16
Marlena C Kruger, Yoke Mun Chan, Lee Ting Lau, Chin Chin Lau, Yit Siew Chin, Barbara Kuhn-Sherlock, Joanne M Todd, Linda M Schollum
PURPOSE: In Malaysia, hip fracture incidence is higher in Chinese women than other ethnic groups. This study compared the effects of a high-calcium vitamin D fortified milk with added FOS-inulin versus regular milk over 1 year on aspects of bone health in Chinese postmenopausal women in Malaysia. METHODS: One-hundred and twenty-one women (mean age 59 (± 4) years) were randomized into two groups: control (n = 60; regular milk, 428 mg calcium per day) or intervention (n = 61; fortified milk at 1200 mg calcium, 96 mg magnesium, 2...
October 3, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/28968803/light-emitting-diode-led-traps-improve-the-light-trapping-of-anopheline-mosquitoes
#17
B M Costa-Neta, A A da Silva, J M Brito, J L P Moraes, J M M Rebêlo, F S Silva
Numerous advantages over the standard incandescent lamp favor the use of light-emitting diodes (LEDs) as an alternative and inexpensive light source for sampling medically important insects in surveillance studies. Previously published studies examined the response of mosquitoes to different wavelengths, but data on anopheline mosquito LED attraction are limited. Center for Disease Control and Prevention-type light traps were modified by replacing the standard incandescent lamp with 5-mm LEDs, one emitting at 520 nm (green) and the other at 470 nm (blue)...
November 7, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28964233/laboratory-measurements-of-dusty-surface-charging-in-plasma
#18
Kevin Chou, Joseph Wang
A novel method is developed to study the charging of a conducting surface covered by a thin dust layer in plasma. The potential profile in the dust layer and the floating potential of the surface underneath are measured directly by embedding conducting wires in the dust and connecting the wires to a measurement plate outside the vacuum chamber, where a Trek non-contacting electrostatic voltmeter measures the floating potential of the measurement plate. Laboratory experiments are carried out to study plasma charging of a conducting plate covered by lunar dust simulant, JSC-1A...
September 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/28924612/water-on-the-surface-of-the-moon-as-seen-by-the-moon-mineralogy-mapper-distribution-abundance-and-origins
#19
Shuai Li, Ralph E Milliken
A new thermal correction model and experimentally validated relationships between absorption strength and water content have been used to construct the first global quantitative maps of lunar surface water derived from the Moon Mineralogy Mapper near-infrared reflectance data. We find that OH abundance increases as a function of latitude, approaching values of ~500 to 750 parts per million (ppm). Water content also increases with the degree of space weathering, consistent with the preferential retention of water originating from solar wind implantation during agglutinate formation...
September 2017: Science Advances
https://www.readbyqxmd.com/read/28921453/upper-and-lower-limbs-composition-a-comparison-between-anthropometry-and-dual-energy-x-ray-absorptiometry-in-healthy-people
#20
Danila Diano, Federico Ponti, Sara Guerri, Daniele Mercatelli, Michele Amadori, Maria Pilar Aparisi Gómez, Giuseppe Battista, Giuseppe Guglielmi, Alberto Bazzocchi
The detection of changes in lean mass (LM) distribution can help to prevent disability. This study assessed the degree of association between anthropometric measurements and dual-energy X-ray absorptiometry (DXA) body composition (BC) parameters of the upper and lower limbs in a healthy general population and collected DXA age- and sex-specific values of BC that can be useful to build a reference standard. PURPOSE: The primary aim of this study was to investigate the reliability of some widely available anthropometric measurements in the assessment of body composition (BC) at the limbs, especially in terms of muscle mass, in a large sample of healthy subjects of different age bands and sex, using fat mass (FM) and lean mass (LM) parameters derived by dual-energy X-ray absorptiometry (DXA) as the gold standard...
September 18, 2017: Archives of Osteoporosis
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