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seasonalvariation, etc ; fertigation; microirrigation; water distribution; Show all 4 Subjects
Abstract:
... For a drip irrigation system, different lateral layouts and water feeding modes may be used. Furthermore, the actual operating conditions may greatly deviate from the designed ones, deteriorating system performance of irrigation and fertigation. Field experiments were conducted to evaluate the seasonal variation of the hydraulic performance of three drip irrigation subunits with either single end ...
seasonalvariation, etc ; basins; evapotranspiration; research; watersheds; Show all 5 Subjects
Abstract:
... Eta Regional Model of CPTEC-INPE is used to obtain intraseasonal (30-day) 8-member ensemble forecasts over the Madeira River basin for the period 2002–2012. The initial and boundary conditions are taken from Atmospheric General Circulation Global Model in six members and from Global Coupled Ocean-Atmosphere Model in two members. The intraseasonal forecasts produced by dynamic downscaling with Eta ...
seasonalvariation, etc ; climate; climatology; probability distribution; rain; Malaysia; Show all 6 Subjects
Abstract:
... This study evaluated the skills of global climate models (GCMs) of the fifth and sixth Coupled Model Intercomparison Project (CMIP5 and CMIP6) in simulating observed rainfall climatology, seasonal variability, and probability distribution function (PDF) in Peninsular Malaysia. Monthly rainfall records of eighty stations for 1975 − 2005 were employed for this purpose. The Kling-Gupta efficiency was ...
seasonalvariation, etc ; altitude; hydrometeorology; probability; rain; rain gauges; satellites; Show all 7 Subjects
Abstract:
... Accurate precipitation observations are crucial for water resources management and as inputs for a gamut of hydrometeorological applications. Precipitation data from Integrated Multi-Satellite Retrievals for Global Precipitation Measurement (GPM) (IMERG) have recently been widely used to complement traditional rain gauge systems. However, the satellite precipitation data needs to be validated befo ...
seasonalvariation, etc ; climatology; data collection; summer; surface temperature; tropopause; Iran; Show all 7 Subjects
Abstract:
... It is very important to study the role of global warming on the variability of summer characteristics in arid and semi-arid climates such as Iran, because of its impact on natural and social systems. The aim of this study is to detect interannual variability in the onset, end, and duration of the summer season in Iran. To achieve this goal, three indices are defined: physical (PI), dynamic (DI), a ...
seasonalvariation, etc ; Bacillariophyceae; data collection; plankton; rivers; species diversity; summer; Show all 7 Subjects
Abstract:
... Comparing spatio-temporal patterns between planktonic and benthic algae is helpful for understanding their associations and differences. However, such studies are still rare especially in large rivers. We used a dataset collected in the upper reach of the Jinsha River in different seasons to explore biodiversity and assembly processes of planktonic and benthic diatom assemblages. We found that pla ...
seasonalvariation, etc ; COVID-19 infection; air quality; rain; research; Indonesia; Show all 6 Subjects
Abstract:
... Implementing a lockdown or activity restriction to reduce the spread of COVID-19 cases is assumed to improve air quality in highly populated cities. The effect of lockdown on air quality is often quantified by comparing pre- and during-lockdown air quality parameters without considering confounding meteorological factors. We demonstrated that rainfall can explain changes in PM10 and PM2.5 paramete ...
seasonalvariation, etc ; Philippines; acoustics; coasts; energy; geophysics; models; research; New Guinea; Show all 9 Subjects
Abstract:
... The northward‐flowing Mindanao Undercurrent (MUC) was directly measured by acoustic Doppler current profilers from a subsurface mooring at about 8°N, 127°E during 2 years (November 2017–December 2019). Its depth covers a range from 400 m to deeper than 1,000 m with its core appearing at around 900 m. The mean velocity of MUC's core was approximately 5.8 cm s⁻¹ with a maximum speed of about 47.6 cm ...
seasonalvariation, etc ; air; coal; combustion; dust; environment; pollution; spring; winter; China; Show all 10 Subjects
Abstract:
... To gain a comprehensive understanding of sources, health risks, and regional transport of PM₂.₅-bound metals in Beijing, one-year continuous measurement (K, Fe, Ca, Zn, Pb, Mn, Ba, Cu, As, Se, Cr, and Ni) was conducted from December 2016 to November 2017 and Positive Matrix Factorization analysis (PMF) was applied for source apportionment. It was found that the seasonal variation of sources could ...
seasonalvariation, etc ; dairy cattle; dairy science; disease incidence; lameness; late lactation; Show all 6 Subjects
Abstract:
... Transition period (±3 wk around calving) diseases are prevalent in dairy systems. In this review we describe the physiological and behavioral changes experienced by cows during the transition period and during the dry period leading up to this. Our narrative review examines risk factors associated with these diseases in zero-grazing and grazing systems. The available research indicates that cows i ...
seasonalvariation, etc ; Chlorella sorokiniana; biodiversity; biomass; community structure; microalgae; research; summer; zooplankton; Show all 9 Subjects
Abstract:
... Contaminating microzooplankton have a great influence on the growth of microalgae. To illustrate how harmful contaminants affect the growth of Chlorella sorokiniana and to investigate the microzooplankton community composition, the succession of microzooplankton contaminating pilot-scale C. sorokiniana cultures was surveyed in four different seasons. Nineteen species of microzooplankton (including ...
seasonalvariation, etc ; geomorphology; humans; river regulation; rivers; sediments; stream channels; Yellow River; Show all 8 Subjects
Abstract:
... Water-sediment regulation schemes (WSRS) enacted by dams drive downstream hydrological and geomorphic processes. However, few studies have been conducted to reveal the seasonal variation in the relationship between hydrological and geomorphic processes and the main factors driving river channel geomorphology. In this study, the effects of the WSRS of Xiaolangdi Dam (XLD) on the hydro-morphological ...
seasonalvariation, etc ; body size; ectothermy; grasses; latitude; lizards; metabolism; ovipary; progeny; China; Show all 10 Subjects
Abstract:
... Warming temperatures caused by climate change are predicted to vary temporally and spatially. For mid‐ and high‐latitude reptiles, the seasonal variation in warming temperatures experienced by embryos and hatchlings may determine offspring fitness, yet this has remained largely unexplored. To evaluate the independent and interactive influence of seasonal variation in warming temperatures on embryo ...
seasonalvariation, etc ; altitude; basins; climate; river water; rivers; runoff; water storage; China; Show all 9 Subjects
Abstract:
... The upper Brahmaputra River, China. The long-term water level and storage variations of the upper Brahmaputra River (UBR) are not yet clear due to the low accessibility of gauged data in high-altitude and harsh environments. The main objective of this study is to facilitate investigations of long-term river water level and storage variations over the UBR. Here we developed a hypsometric method to ...
seasonalvariation, etc ; Gulf Stream; autumn; geophysics; research; spring; summer; winter; Antarctic region; Show all 9 Subjects
Abstract:
... Distinct geographical distributions of four types of mesoscale baroclinic instabilities (BCIs) exist in the global oceans, implying preferences of surface or subsurface mesoscale eddies to specific regions. This study explores seasonal variations of global BCI types and their dependence on varying background ocean states with a focus on three representative regions. First, the regions of the Kuros ...
seasonalvariation, etc ; basal metabolic rate; body weight; climate; metabolism; phylogeny; resting periods; Show all 7 Subjects
Abstract:
... A variety of responses to climate seasonality have evolved by small mammals, including adjustments of the basal rate of metabolism (BMR) and the use of daily or seasonal torpor (here referred to as short-bout and long-bout torpor). The seasonal variation of their BMR is known to depend mainly on the concurrent variation of body mass, but it should also be affected by structural and functional chan ...
seasonalvariation, etc ; air quality; case studies; environment; hospitals; humans; nitrogen dioxide; particulates; pollutants; Show all 9 Subjects
Abstract:
... Long term, continuous indoor and outdoor pollutant monitoring was evaluated from a case study hospital, school, office and 18 apartments in the UK. Data was examined in order to explore the dynamic behaviour of indoor-outdoor ratios (I/O) for both particulate matter and nitrogen dioxide. Traditionally I/O ratios have been determined as single aggregate values or static parameters, from passive sam ...
seasonalvariation, etc ; air; environment; experimental design; insecticides; pollution; pyrethrins; rain; topsoil; wet deposition; Show all 10 Subjects
Abstract:
... The use of pesticides in agriculture to protect crops against pests and diseases generates environmental contamination. The atmospheric compartment contributes to their dispersion at different distances from the application areas and to the exposure of organisms in untreated areas through dry and wet deposition. A multiresidue analytical method using the same TD–GC‐MS analytical pipeline to quanti ...
seasonalvariation, etc ; Ascophyllum nodosum; biomass; carotenoids; ingredients; liquids; macroalgae; peptides; polyphenols; product development; Show all 10 Subjects
Abstract:
... Ascophyllum nodosum contains many valuable compounds, including polyphenols, peptides, and carotenoids that have been shown to exhibit biological activities. These compounds are not a priority ingredient in seaweed meal products for the current users. Hence, the aim of the study was to investigate the chemical and bioactive characteristics of A. nodosum as affected by seasonal variation and evalua ...
seasonalvariation, etc ; liquid chromatography; retrospective studies; tandem mass spectrometry; vitamin deficiencies; water solubility; Show all 6 Subjects
Abstract:
... We aimed to establish reference intervals for water-soluble vitamins determined by liquid chromatography tandem mass spectrometry to improve the diagnosis of vitamin deficiency and outcomes of associated conditions. In this retrospective analysis of 24 810 specimens, we aimed to examine sex-, age-, and season-related variations in vitamin levels in different groups, set reference-value intervals f ...