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https://www.readbyqxmd.com/read/28340479/additive-effects-prevail-the-response-of-biota-to-multiple-stressors-in-an-intensively-monitored-watershed
#1
Alexander Gieswein, Daniel Hering, Christian K Feld
Freshwater ecosystems are impacted by a range of stressors arising from diverse human-caused land and water uses. Identifying the relative importance of single stressors and understanding how multiple stressors interact and jointly affect biology is crucial for River Basin Management. This study addressed multiple human-induced stressors and their effects on the aquatic flora and fauna based on data from standard WFD monitoring schemes. For altogether 1095 sites within a mountainous catchment, we used 12 stressor variables covering three different stressor groups: riparian land use, physical habitat quality and nutrient enrichment...
March 21, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28340444/comparative-effectiveness-of-dual-action-versus-single-action-antidepressants-for-the-treatment-of-depression-in-people-living-with-hiv-aids
#2
Jon C Mills, Jeffrey S Harman, Robert L Cook, Nicole M Marlow, Christopher A Harle, R Paul Duncan, Angela M Bengtson, Brian W Pence
BACKGROUND: Depression is the most common psychiatric comorbidity among people living with HIV/AIDS (PLWHA). Little is known about the comparative effectiveness between different types of antidepressants used to treat depression in this population. We compared the effectiveness of dual-action and single-action antidepressants in PLWHA for achieving remission from depression. METHODS: We used data from the Centers for AIDS Research Network of Integrated Clinic Systems to identify 1175 new user dual-action or single-action antidepressant treatment episodes occurring from 2005 to 2014 for PLWHA diagnosed with depression...
March 19, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28340224/the-association-of-context-specific-sitting-time-and-physical-activity-intensity-to-working-memory-capacity-and-academic-achievement-in-young-adults
#3
Mireia Felez-Nobrega, Charles H Hillman, Eva Cirera, Anna Puig-Ribera
To examine combined associations between self-reported context-specific sitting time (ST) and physical activity (PA) with working memory capacity (WMC) and academic achievement in a sample of Spanish adults. Undergraduate students ( n = 371; 21 years ± 3 years, 44% female) were recruited from University of Vic-Central University of Catalonia. Participants completed a 54-item survey that assessed socio-demographic variables (e.g. age, gender, academic year), min/week of light (LPA), moderate (MPA) and vigorous (VPA) intensity PA (International Physical Activity Questionnaire), min/day of domain-specific ST (Last 7 days sedentary behavior questionnaire) and academic performance (grade point average)...
March 18, 2017: European Journal of Public Health
https://www.readbyqxmd.com/read/28339686/movement-patterns-in-women-at-risk-for-perinatal-depression-use-of-a-mood-monitoring-mobile-application-in-pregnancy
#4
Laura J Faherty, Liisa Hantsoo, Dina Appleby, Mary D Sammel, Ian M Bennett, Douglas J Wiebe
Objectives: To examine, using a smartphone application, whether mood is related to daily movement patterns in pregnant women at risk for perinatal depression. Materials and Methods: Thirty-six women with elevated depression symptoms (PHQ-9 ≥ 5) in pregnancy used the application for 8 weeks. Mood was reported using application-administered surveys daily (2 questions) and weekly (PHQ-9 and GAD-7). The application measured daily mobility (distance travelled on foot) and travel radius...
February 19, 2017: Journal of the American Medical Informatics Association: JAMIA
https://www.readbyqxmd.com/read/28335095/genetic-correlation-between-live-body-measurements-and-beef-cutability-traits-in-hanwoo-steers
#5
Yun Ho Choy, Jae Goo Lee, Alam Mahboob, Tae Jeong Choi, Seung Hee Rho
The growth, carcass and retail cut yield records on 1,428 Hanwoo steers obtained through progeny testing were analyzed in this study, and their heritability and genetic relationships among the traits were estimated using animal models. Two different models were compared in this study. Each model was fitted for different fixed class effects, date of slaughter for carcass traits and batch of progeny test live measurement traits, and a choice of covariates (carcass weight in Model 1 or backfat thickness in Model 2) for carcass traits...
March 21, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28334803/statistical-analysis-of-genetic-interactions-in-tn-seq-data
#6
Michael A DeJesus, Subhalaxmi Nambi, Clare M Smith, Richard E Baker, Christopher M Sassetti, Thomas R Ioerger
Tn-Seq is an experimental method for probing the functions of genes through construction of complex random transposon insertion libraries and quantification of each mutant's abundance using next-generation sequencing. An important emerging application of Tn-Seq is for identifying genetic interactions, which involves comparing Tn mutant libraries generated in different genetic backgrounds (e.g. wild-type strain versus knockout strain). Several analytical methods have been proposed for analyzing Tn-Seq data to identify genetic interactions, including estimating relative fitness ratios and fitting a generalized linear model...
February 22, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28334740/patient-experience-of-primary-care-and-advance-care-planning-a-multicentre-cross-sectional-study-in-japan
#7
Takuya Aoki, Jun Miyashita, Yosuke Yamamoto, Tatsuyoshi Ikenoue, Morito Kise, Yasuki Fujinuma, Shingo Fukuma, Miho Kimachi, Sayaka Shimizu, Shunichi Fukuhara
Background.: Advance care planning (ACP) is becoming increasingly important in the primary care setting because of its positive impact on the end-of-life care. Objective.: We aimed to investigate the relationship between patient experience of primary care and ACP. Methods.: This cross-sectional study was conducted in 28 primary care clinics in Japan. We assessed patient experience of primary care using a Japanese version of Primary Care Assessment Tool (JPCAT), which comprises six domains: first contact, longitudinality, coordination, comprehensiveness (services available), comprehensiveness (services provided) and community orientation...
January 30, 2017: Family Practice
https://www.readbyqxmd.com/read/28334646/defluoridation-of-drinking-water-using-a-new-flow-column-electrocoagulation-reactor-fcer-experimental-statistical-and-economic-approach
#8
Khalid S Hashim, Andy Shaw, Rafid Al Khaddar, Montserrat Ortoneda Pedrola, David Phipps
A new batch, flow column electrocoagulation reactor (FCER) that utilises a perforated plate flow column as a mixer has been used to remove fluoride from drinking water. A comprehensive study has been carried out to assess its performance. The efficiency of fluoride removal (R%) as a function of key operational parameters such as initial pH, detention time (t), current density (CD), inter-electrode distance (ID) and initial concentration (C0) has been examined and an empirical model has been developed. A scanning electron microscopy (SEM) investigation of the influence of the EC process on morphology of the surface of the aluminium electrodes, showed the erosion caused by aluminium loss...
March 20, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28334637/on-the-non-linear-association-between-serum-uric-acid-levels-and-all-cause-mortality-rate-in-patients-with-type-2-diabetes-mellitus
#9
Olga Lamacchia, Andrea Fontana, Antonio Pacilli, Massimiliano Copetti, Stefania Fariello, Monia Garofolo, Giuseppe Penno, Vincenzo Trischitta, Salvatore De Cosmo, Mauro Cignarelli
BACKGROUND AND AIMS: High levels of serum uric acid (SUA) are associated with increased mortality risk in the general population. Contrasting results are available in people with diabetes. The aim of our study was to investigate the association and its functional form between SUA and all cause-mortality in patients with type 2 diabetes mellitus (T2DM). METHODS: We studied three cohorts of patients with T2DM: Gargano Mortality Study, Foggia Mortality Study, Pisa Mortality Study...
March 9, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28334265/evaluation-of-malaise-and-yellow-pan-trap-performance-to-assess-velvet-ant-hymenoptera-mutillidae-diversity-in-a-neotropical-savanna
#10
C R Vieira, C Waichert, K A Williams, J P Pitts
Given the global biodiversity crisis, it is crucial to identify methods best suited for conducting inventories. We evaluated the relative merits of Malaise traps (MT) and ground-level yellow pan traps (YPT) to sample male velvet ants (Hymenoptera: Mutillidae) in a Neotropical savanna biodiversity hotspot. We compared richness, number of captures, evenness, composition, and body size of male velvet ants (Hymenoptera: Mutillidae) sampled with both methods in four sites at Parque Nacional da Chapada dos Veadeiros, central Brazil, during 19 d...
March 6, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28334085/environmental-niche-divergence-among-three-dune-shrub-sister-species-with-parapatric-distributions
#11
Sergio Chozas, Rosa M Chefaoui, Otília Correia, Raúl Bonal, Joaquín Hortal
Background and Aims: The geographical distributions of species are constrained by their ecological requirements. The aim of this work was to analyse the effects of environmental conditions, historical events and biogeographical constraints on the diversification of the three species of the western Mediterranean shrub genus Stauracanthus , which have a parapatric distribution in the Iberian Peninsula. Methods: Ecological niche factor analysis and generalized linear models were used to measure the response of all Stauracanthus species to the environmental gradients and map their potential distributions in the Iberian Peninsula...
February 20, 2017: Annals of Botany
https://www.readbyqxmd.com/read/28333630/multilinear-spatial-discriminant-analysis-for-dimensionality-reduction
#12
Sen Yuan, Xia Mao, Lijiang Chen
In the last few years, great efforts have been made to extend linear projection technique (LPT) for multidimensional data (i.e. tensor), generally referred to as multilinear projection technique (MPT). The vectorized nature of LPT requires high dimensional data to be converted to vector, hence may lose spatial neighborhood information of raw data. MPT well addresses this problem by encoding multidimensional data as general tensors of second or even higher order. In this paper, we propose a novel multilinear projection technique, called multilinear spatial discriminant analysis (MSDA), to identify the underlying manifold of high-order tensor data...
March 21, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28333623/a-comparison-of-fem-based-inversion-algorithms-local-frequency-estimation-and-direct-inversion-approach-used-in-mr-elastography
#13
Mohammad Honarvar, Ramin Sahebjavaher, Robert Rohling, Septimiu Salcudean
In quantitative elastography, maps of the mechanical properties of soft tissue, or elastograms, are calculated from the measured displacement data by solving an inverse problem. The model assumptions have a significant effect on elastograms. Motivated by the high sensitivity of imaging results to the model assumptions for in-vivo Magnetic Resonance Elastography (MRE) of the prostate, we compared elastograms obtained with four different methods. Two FEM-based methods developed by our group were compared with two other commonly used methods, Local Frequency Estimator (LFE) and curl-based Direct Inversion (c-DI)...
March 22, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28333587/variational-latent-gaussian-process-for-recovering-single-trial-dynamics-from-population-spike-trains
#14
Yuan Zhao, Il Memming Park
When governed by underlying low-dimensional dynamics, the interdependence of simultaneously recorded populations of neurons can be explained by a small number of shared factors, or a low-dimensional trajectory. Recovering these latent trajectories, particularly from single-trial population recordings, may help us understand the dynamics that drive neural computation. However, due to the biophysical constraints and noise in the spike trains, inferring trajectories from data is a challenging statistical problem in general...
March 23, 2017: Neural Computation
https://www.readbyqxmd.com/read/28333407/the-use-of-cellavision%C3%A2-dm96-in-the-verification-of-the-presence-of-blasts-in-samples-flagged-by-the-sysmex-xe-5000
#15
H Eilertsen, C E Henriksson, T-A Hagve
INTRODUCTION: The CellaVision™DM96 is a digital pattern recognition system that classifies white blood cells. The aim of this study was to evaluate whether the CellaVision preclassification feature, without a subsequent re-classification, was a sufficient approach to follow up flags reported by Sysmex XE-5000. METHODS: Pairs of blood smears from 400 samples reported with suspect flags were examined using conventional microscopy and the CellaVision features. The effect of pre- vs...
March 23, 2017: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/28333245/euploidy-rates-in-donor-egg-cycles-significantly-differ-between-fertility-centers
#16
S Munné, M Alikani, L Ribustello, P Colls, Pedro A Martínez-Ortiz, D H McCulloh
STUDY QUESTION: Do external factors affect euploidy in egg donor cycles? SUMMARY ANSWER: The study demonstrates that during human assisted reproduction, embryonic chromosome abnormalities may be partly iatrogenic. WHAT IS KNOWN ALREADY: Chromosome abnormalities have been linked in the past to culture conditions such as temperature and Ph variations, as well as hormonal stimulation. Those reports were performed with older screening techniques (FISH), or ART methods no longer in use, and the subjects studied were not a homogeneous group...
March 2, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28333159/maternal-serum-markers-of-lipid-metabolism-in-relation-to-neonatal-anthropometry
#17
N S Boghossian, P Mendola, A Liu, C Robledo, E H Yeung
OBJECTIVE: The objective of this study is to examine associations between lipids (high-density lipoprotein, low-density lipoprotein, total cholesterol, triglycerides and lipoprotein (a)) measured on average three time points during pregnancy and neonatal anthropometrics. STUDY DESIGN: Stored samples from a preeclampsia trial measured as part of a case-control study from five US centers (1992 to 1995) were used. The sample included women without pregnancy complications (n=136) and cases of gestational diabetes (n=93), abnormal glucose tolerance (AGT; n=76), gestational hypertension (n=170) and preeclampsia (n=177)...
March 23, 2017: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/28332170/the-association-between-polycystic-ovary-syndrome-obesity-and-the-serum-concentration-of-adipokines
#18
S Behboudi-Gandevani, F Ramezani Tehrani, R Bidhendi Yarandi, M Noroozzadeh, M Hedayati, F Azizi
PURPOSE: This study aimed to investigate the interactive effect of polycystic ovary syndrome (PCOS) status and obesity status on the serum levels of adipokines. METHODS: In this comparative case-control cross-sectional study, 58 women with PCOS and 104 eumenorrheic non-hirsute women as the control group were recruited. They were further divided into two subgroups of overweight/obese and normal weight. The interactive effect of the PCOS status and obesity status on the circulating levels of adipokines was assessed using general linear model with the adjustment of age...
March 22, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28331773/characteristics-and-factors-associated-with-antihypertensive-medication-use-in-patients-attending-peruvian-health-facilities
#19
Christian R Mejia, Virgilio E Failoc-Rojas, Edison So, Carmen Cervantes, Antonio J Aspajo, Jesus Galileo Leandro, Jhomar Cordova-De La Cruz, Julio C Charri, Kevin E García-Auqui, Lelis Gabriela Coronel-Chucos, Luz Delia Justo-Pinto, Marisol Stefanie Mamani-Apaza, Neil Arón Paz-Campos, Ricardo Correa
INTRODUCTION : Hypertension is a very common disease worldwide, and medication is needed to prevent its short-term and long-term complications. Our objective was to determine the characteristics and factors associated with antihypertensive medication use in patients attending Peruvian health facilities. MATERIALS & METHODS: We performed a multicenter, cross-sectional study with secondary data. We obtained self-reported antihypertensive medication from patients attending health facilities in 10 departments of Peru...
February 3, 2017: Curēus
https://www.readbyqxmd.com/read/28331618/movement-of-leopard-tortoises-in-response-to-environmental-and-climatic-variables-in-a-semi-arid-environment
#20
Martyn Drabik-Hamshare, Colleen T Downs
BACKGROUND: Tortoises (Testudinidae) occur in a wide range of environments, providing important ecosystem functions, such as seed dispersal and refuge in the form of burrows. Tortoise movement has previously been shown to be related to resource availability, reproductive status and local environmental conditions. However, understanding of the variables that drive their movement remains comparatively low. We investigated aspects of movement in leopard tortoises Stigmochelys pardalis-the largest and most abundant tortoise species in sub-Saharan Africa-in response to environmental, climatic and individual variables in the semi-arid Karoo, South Africa...
2017: Movement Ecology
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