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https://www.readbyqxmd.com/read/28334669/distribution-and-sea-to-air-flux-of-isoprene-in-the-east-china-sea-and-the-south-yellow-sea-during-summer
#1
Jian-Long Li, Hong-Hai Zhang, Gui-Peng Yang
Spatial distribution and sea-to-air flux of isoprene in the East China Sea and the South Yellow Sea in July 2013 were investigated. This study is the first to report the concentrations of isoprene in the China marginal seas. Isoprene concentrations in the surface seawater during summer ranged from 32.46 to 173.5 pM, with an average of 83.62 ± 29.22 pM. Distribution of isoprene in the study area was influenced by the diluted water from the Yangtze River, which stimulated higher in-situ phytoplankton production of isoprene rather than direct freshwater input...
March 20, 2017: Chemosphere
https://www.readbyqxmd.com/read/28333942/comparison-of-self-measured-diurnal-intraocular-pressure-profiles-using-rebound-tonometry-between-primary-angle-closure-glaucoma-and-primary-open-angle-glaucoma-patients
#2
Shaoying Tan, Nafees Baig, Linda Hansapinyo, Vishal Jhanji, Shihui Wei, Clement C Tham
PURPOSE: To document the diurnal intraocular pressure (IOP) profile with rebound tonometry performed by primary glaucoma patients in non-clinic environment. PATIENTS AND METHODS: Fifty-three medically-treated eyes of 31 primary angle closure glaucoma (PACG) and 22 primary open angle glaucoma (POAG) patients with no previous eye surgery were recruited. Diurnal IOP was measured 5 times per day at four-hourly intervals from 08:00 to 24:00 for 1 week in patients' study eye using rebound tonometry in a non-clinic environment...
2017: PloS One
https://www.readbyqxmd.com/read/28333924/csl-encodes-a-leucine-rich-repeat-protein-implicated-in-red-violet-light-signaling-to-the-circadian-clock-in-chlamydomonas
#3
Ayumi Kinoshita, Yoshimi Niwa, Kiyoshi Onai, Takashi Yamano, Hideya Fukuzawa, Masahiro Ishiura, Takuya Matsuo
The green alga Chlamydomonas reinhardtii shows various light responses in behavior and physiology. One such photoresponse is the circadian clock, which can be reset by external light signals to entrain its oscillation to daily environmental cycles. In a previous report, we suggested that a light-induced degradation of the clock protein ROC15 is a trigger to reset the circadian clock in Chlamydomonas. However, light signaling pathways of this process remained unclear. Here, we screened for mutants that show abnormal ROC15 diurnal rhythms, including the light-induced protein degradation at dawn, using a luciferase fusion reporter...
March 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28333856/extreme-diurnal-variation-of-central-macular-thickness-in-diabetic-macular-edema
#4
Kumar Sambhav, Sandeep Grover, Kakarla V Chalam
PURPOSE: Spectral domain optical coherence tomography is an established modality to quantify diabetic macular edema (DME). Change in central subfield thickness exceeding 3% to 6% in DME is likely to be significant. In this case of DME, we describe an extreme bilateral variation in central macular thickness on spectral domain optical coherence tomography over two consecutive days without any treatment. METHODS: The patient with DME and nonproliferative diabetic retinopathy underwent visual acuity testing, slit-lamp biomicroscopy, and dilated fundus examination...
March 22, 2017: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/28333524/developmental-origins-of-infant-emotion-regulation-mediation-by-temperamental-negativity-and-moderation-by-maternal-sensitivity
#5
Jenna C Thomas, Nicole Letourneau, Tavis S Campbell, Lianne Tomfohr-Madsen, Gerald F Giesbrecht
Emotion regulation is essential to cognitive, social, and emotional development and difficulties with emotion regulation portend future socioemotional, academic, and behavioral difficulties. There is growing awareness that many developmental outcomes previously thought to begin their development in the postnatal period have their origins in the prenatal period. Thus, there is a need to integrate evidence of prenatal influences within established postnatal factors, such as infant temperament and maternal sensitivity...
April 2017: Developmental Psychology
https://www.readbyqxmd.com/read/28329927/-lagged-effects-of-diurnal-temperature-range-on-mortality-in-66-cities-in-china-a-time-series-study
#6
Y Q Zhao, L J Wang, Y Luo, P Yin, Z J Huang, T Liu, H L Lin, J P Xiao, X Li, W L Zeng, W J Ma, M G Zhou
Objective: To estimate the effect of daily diurnal temperature range (DTR) on mortality in different areas in China. Methods: A time series study using the data collected from 66 areas in China was conducted, and Meta-analysis was used to analyze the estimates of associations between DTR and daily mortality. Modifying effects of extremely low and high DTR-mortality relationship by season and socioeconomic status (SES) were also evaluated respectively. Cumulative excess risk (CER) was used as an index to evaluate the effects...
March 10, 2017: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/28322910/long-term-stability-of-diurnal-salivary-cortisol-and-alpha-amylase-secretion-patterns
#7
Nadine Skoluda, Roberto La Marca, Mario Gollwitzer, Andreas Müller, Heribert Limm, Birgitt Marten-Mittag, Harald Gündel, Peter Angerer, Urs M Nater
This study aimed to investigate long-term stability and variability of diurnal cortisol and alpha-amylase patterns. Diurnal cortisol and alpha-amylase secretion patterns were assessed on a single workday with three waves of measurement across a total time period of 24months in 189 participants. Separate hierarchical linear models were analyzed, with and without a number of potential predictor variables (age, BMI, smoking, chronic stress, stress reactivity). While low long-term stability was found in diurnal cortisol, the stability of diurnal alpha-amylase was moderate across the time period of 24months...
March 18, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28322083/diurnal-variation-of-the-melanin-concentrating-hormone-level-in-the-hypothalamus
#8
Balázs Gerics, Ferenc Szalay, Péter Sótonyi, Veronika Jancsik
Melanin-concentrating hormone (MCH), the neuropeptide produced mainly in the hypothalamus, plays an operative role in regulating food intake and the sleep/wake cycle. Considering that these physiological functions pursue diurnal variations, we checked whether the total hypothalamic MCH level depends on the time of the day. The aggregated MCH peptide content of the whole MCH neuron population was significantly higher at the end of the sleeping period (lights on), than at the end of the active period (lights off)...
March 2017: Acta Biologica Hungarica
https://www.readbyqxmd.com/read/28321614/freeze-thaw-revival-of-rotifers-and-algae-in-a-desiccated-high-elevation-5500-meters-microbial-mat-high-andes-per%C3%A3%C2%BA
#9
S K Schmidt, J L Darcy, Pacifica Sommers, Eva Gunawan, J E Knelman, Karina Yager
This is the first study of the highest elevation cyanobacteria-dominated microbial mat yet described. The desiccated mat was sampled in 2010 from an ephemeral rock pool at 5500 m above sea level in the Cordillera Vilcanota of southern Perú. After being frozen for 6 years at -20 °C in the lab, pieces of the mat were sequenced to fully characterize both the 16 and 18S microbial communities and experiments were conducted to determine if organisms in the mat could revive and become active under the extreme freeze-thaw conditions that these mats experience in the field...
March 21, 2017: Extremophiles: Life Under Extreme Conditions
https://www.readbyqxmd.com/read/28320839/sleep-deprivation-and-caffeine-treatment-potentiate-photic-resetting-of-the-master-circadian-clock-in-a-diurnal-rodent
#10
Pawan Kumar Jha, Hanan Bouâouda, Sylviane Gourmelen, Stephanie Dumont, Fanny Fuchs, Yannick Goumon, Patrice Bourgin, Andries Kalsbeek, Etienne Challet
Circadian rhythms in nocturnal and diurnal mammals are primarily synchronized to local time by the light-dark cycle. However, non-photic factors, such as behavioural arousal and metabolic cues, can also phase-shift the master clock in the suprachiasmatic nuclei (SCN) and/or reduce the synchronizing effects of light in nocturnal rodents. In diurnal rodents, the role of arousal or insufficient sleep in these functions is still poorly understood. In the present study, diurnal Sudanian grass rats, Arvicanthis ansorgei, were aroused at night by sleep deprivation (gentle handling) or caffeine treatment that both prevented sleep...
March 20, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28319705/contributions-of-vehicular-emissions-and-secondary-formation-to-nitrous-acid-concentrations-in-ambient-urban-air-in-tokyo-in-the-winter
#11
Yoshihiro Nakashima, Yasuhiro Sadanaga, Shinji Saito, Junya Hoshi, Hiroyuki Ueno
Nitrous acid (HONO) plays an important role in the formation of OH radicals, which are involved in photochemical oxidation. HONO concentrations in ambient air at urban sites have previously been measured, but very few studies have been performed in central Tokyo. In this study, HONO concentrations in ambient air in southeast central Tokyo (near Tokyo Bay) in winter were determined by incoherent cavity enhanced absorption spectroscopy. The O3, NO, NO2, and SO2 concentrations were simultaneously determined. The NO concentrations were used to classify the parts of the study period into types I (high pollution), II (medium pollution), and III (low pollution)...
March 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28319698/the-combined-effect-of-reduced-fossil-fuel-consumption-and-increasing-biomass-combustion-on-athens-air-quality-as-inferred-from-long-term-co-measurements
#12
Myrto Gratsea, Eleni Liakakou, Nikos Mihalopoulos, Anastasios Adamopoulos, Eirini Tsilibari, Evangelos Gerasopoulos
To evaluate the role of biomass burning emissions, and in particular of residential wood heating, as a result of the economic recession in Greece, carbon monoxide (CO) atmospheric concentrations from five (5) stations of the National Air Pollution Monitoring Network in Athens, spanning the period 2000-2015, in conjunction with black carbon (BC) concentrations from the NOA (National Observatory of Athens) station at Thissio were analysed. The contribution of the different sources to the diurnal cycle of these two pollutants is clear, resulting to a morning peak, mainly due to traffic, and a late evening peak attributed both to fossil fuel (traffic plus central heating) and biomass combustion...
March 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28318696/coupling-lidar-and-thermal-imagery-to-model-the-effects-of-riparian-vegetation-shade-and-groundwater-inputs-on-summer-river-temperature
#13
Vincent Wawrzyniak, Pascal Allemand, Sarah Bailly, Jérôme Lejot, Hervé Piégay
In the context of global warming, it is important to understand the drivers controlling river temperature in order to mitigate temperature increases. A modeling approach can be useful for quantifying the respective importance of the different drivers, notably groundwater inputs and riparian shading which are potentially critical for reducing summer temperature. In this study, we use a one-dimensional deterministic model to predict summer water temperature at an hourly time step over a 21km reach of the lower Ain River (France)...
March 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28318454/infant-stranger-fear-trajectories-predict-anxious-behaviors-and-diurnal-cortisol-rhythm-during-childhood
#14
Carol A Van Hulle, Mollie N Moore, Kathryn Lemery-Chalfant, H Hill Goldsmith, Rebecca J Brooker
Although a robust literature has linked stable, high levels of fear across childhood to increased risk for anxiety problems, less is known about alternative pathways to anxiety. We tested two putatively normative developmental pathways of early fearfulness for their distinct associations with behavioral (anxiety-related behaviors and symptoms) and biological (diurnal cortisol) markers of anxiety risk in middle childhood in a community-based sample (n = 107). Steeper increases in fear from 6 to 36 months predicted more parent-reported anxiety symptoms at age 8 years...
March 20, 2017: Development and Psychopathology
https://www.readbyqxmd.com/read/28317914/daytime-warming-has-stronger-negative-effects-on-soil-nematodes-than-night-time-warming
#15
Xiumin Yan, Kehong Wang, Lihong Song, Xuefeng Wang, Donghui Wu
Warming of the climate system is unequivocal, that is, stronger warming during night-time than during daytime. Here we focus on how soil nematodes respond to the current asymmetric warming. A field infrared heating experiment was performed in the western of the Songnen Plain, Northeast China. Three warming modes, i.e. daytime warming, night-time warming and diurnal warming, were taken to perform the asymmetric warming condition. Our results showed that the daytime and diurnal warming treatment significantly decreased soil nematodes density, and night-time warming treatment marginally affected the density...
March 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28315568/diurnal-blood-pressure-parameters-in-normal-tension-glaucoma-primary-open-angle-glaucoma-and-healthy-subjects
#16
Tolga Kocatürk, Çağdaş Akgüllü, Gökhan E Evliçoğlu, İmran K Ömürlü, Harun Çakmak, Ufuk Eryılmaz, Volkan Dayanır
OBJECTIVE: The pathophysiology of glaucoma is still undisclosed. Cardiovascular hemodynamic changes are hypothesized to contribute to glaucoma. This study aimed to determine the differences in the diurnal blood pressure (BP) of patients with normal tension glaucoma (NTG), primary open angle glaucoma (POAG), and controls without glaucoma. METHODS: A total of 129 patients were included in this study. The day-night average systolic and diastolic BPs, the day-night average pulse pressures (PPs), the day-night average heart rates, and the percentage of BP decline at night were obtained from the Holter devices and compared...
March 9, 2017: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/28314947/seasonal-adaptations-in-energy-budgeting-in-the-primate-lepilemur-leucopus
#17
Janina Bethge, Bianca Wist, Eleanor Stalenberg, Kathrin Dausmann
The spiny forest of South Madagascar is one of the driest and most unpredictable habitats in Africa. The small-bodied, nocturnal primate Lepilemur leucopus lives in this harsh habitat with high diurnal and seasonal changes in ambient temperature. In this study, we investigated seasonal adaptions in energy budgeting of L. leucopus, which allow it to live under these conditions by measuring resting metabolic rate using open-flow respirometry. No signs of heterothermy were detected, and resting metabolic rate was significantly lower in the warmer wet season than in the colder dry season...
March 17, 2017: Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology
https://www.readbyqxmd.com/read/28314545/loneliness-in-older-adults-is-associated-with-diminished-cortisol-output
#18
N Schutter, T J Holwerda, M L Stek, J J M Dekker, D Rhebergen, H C Comijs
OBJECTIVE: Loneliness in older adults has been associated with increased mortality and health problems. One of the assumed underlying mechanisms is dysregulation of the hypothalamic-pituitary-adrenocortical axis (HPA-axis). The purpose of this study was to investigate whether loneliness in older adults is associated with HPA-axis dysregulation and whether this association differs between depressed and non-depressed persons. METHODS: Cross-sectional data of 426 lonely and non-lonely older adults in the Netherlands Study of Depression in Older Persons (NESDO) were used...
April 2017: Journal of Psychosomatic Research
https://www.readbyqxmd.com/read/28304247/effects-of-chronic-diurnal-disruption-and-acute-inflammatory-challenge-on-mice-with-latent-murine-gammaherpesvirus-infection
#19
Rita A Trammell, Linda A Toth
People who engage in shift work (SW) have increased risk of developing illnesses, including infectious diseases and various inflammatory conditions. We hypothesized that exposure to repeated cycles of diurnal disruption, mimicking SW, influences viral clearance, latent viral load, or viral reactivation from latency in mice infected with murine gammaherpesvirus (MuGHV). To test this idea, we inoculated BALB/cByJ and C.129S7(B6)-Ifng tm1Ts/J (IFNgKO) mice with MuGHV and housed them under either a stable light:dark (LD) cycle or one mimicking SW...
December 1, 2016: Comparative Medicine
https://www.readbyqxmd.com/read/28303945/dependence-of-nighttime-sleep-duration-in-one-month-old-infants-on-alterations-in-natural-and-artificial-photoperiod
#20
Sachiko Iwata, Fumie Fujita, Masahiro Kinoshita, Mitsuaki Unno, Takashi Horinouchi, Seiichi Morokuma, Osuke Iwata
Human sleep-wake cycles are entrained by both natural and artificial light-dark cycles. However, little is known regarding when and how the photoperiod changes entrain the biological clock after conception. To investigate the dependence of sleep patterns in young infants on the natural and artificial light-dark cycles, 1,302 pairs of one-month-old infants and their mothers were asked to answer a questionnaire. Birth in spring, longer daytime sleep duration, early/regular light-off times, and longer maternal nighttime sleep duration were identified as independent variables for longer infant nighttime sleep duration in both univariate and multivariate analyses...
March 17, 2017: Scientific Reports
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