keyword
MENU ▼
Read by QxMD icon Read
search

Water balance

keyword
https://www.readbyqxmd.com/read/28210894/expansion-of-sugarcane-monoculture-associated-impacts-and-management-measures-in-the-semi-arid-east-african-rift-valley-ethiopia
#1
Solomon A Beza, Mohammed A Assen
The study examined the expansion of sugarcane monoculture over the period 1957-2010 and its implications for land degradation and land management measures in the semi-arid northern Main Ethiopian Rift Valley. It used multi-scale and multi-temporal imageries aided by qualitative surveying to investigate the dynamics of land use and cover changes. The study applied both a pixel-based supervised classification and feature extraction methods at subclass levels and merged them into major compatible and comparable land use and cover groups...
March 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28208232/non-linear-co2-flux-response-to-seven-years-of-experimentally-induced-permafrost-thaw
#2
Marguerite Mauritz, Rosvel Bracho, Gerardo Celis, Jack Hutchings, Susan M Natali, Elaine Pegoraro, Verity G Salmon, Christina Schädel, Elizabeth E Webb, Edward A G Schuur
Rapid Arctic warming is expected to increase global greenhouse gas concentrations as permafrost thaw exposes immense stores of frozen carbon (C) to microbial decomposition. Permafrost thaw also stimulates plant growth, which could offset C loss. Using data from seven years of experimental Air and Soil warming in moist acidic tundra, we show that Soil warming had a much stronger effect on CO2 flux than Air warming. Soil warming caused rapid permafrost thaw and increased ecosystem respiration (Reco), gross primary productivity (GPP), and net summer CO2 storage (NEE)...
February 16, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28208223/conceptualization-of-karstic-aquifer-with-multiple-outlets-using-a-dual-porosity-model
#3
Seiyed Mossa Hosseini, Behzad Ataie-Ashtiani
In this study, two conceptual models, the classic reservoir (CR) model and exchange reservoirs model embedded by dual porosity approach (DPR) are developed for simulation of karst aquifer functioning drained by multiple outlets. The performances of two developed models are demonstrated at a less developed karstic aquifer with three spring outlets located in Zagros Mountain in the south-west of Iran using 22-years of daily data. During the surface recharge, a production function based on water mass balance is implemented for computing the time series of surface recharge to the karst formations...
February 16, 2017: Ground Water
https://www.readbyqxmd.com/read/28207546/effects-of-postexercise-ice-water-and-room-temperature-water-immersion-on-the-sensory-organization-of-balance-control-and-lower-limb-proprioception-in-amateur-rugby-players-a-randomized-controlled-trial
#4
Gary C C Chow, Timothy T T Yam, Joanne W Y Chung, Shirley S M Fong
BACKGROUND: This single-blinded, three-armed randomized controlled trial aimed to compare the effects of postexercise ice-water immersion (IWI), room-temperature water immersion (RWI), and no water immersion on the balance performance and knee joint proprioception of amateur rugby players. METHODS: Fifty-three eligible amateur rugby players (mean age ± standard deviation: 21.6 ± 2.9 years) were randomly assigned to the IWI group (5.3 °C), RWI group (25...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28207158/integration-of-chlorophyll-a-fluorescence-and-photorespirometry-techniques-to-understand-production-dynamics-in-macroaglal-communities
#5
Leigh W Tait, Ian Hawes, David R Schiel
Global declines of macroalgal beds in coastal waters have prompted a plethora of studies attempting to understand the drivers of change within dynamic nearshore ecosystems. Photosynthetic measurements are good tools for assessing the consequences of numerous stressors of macroalgae, but there is somewhat of a disconnection between studies that focus on organism-specific ecophysiological responses and those that address causes and consequences of shifts in macroalgal productivity. Our goal is to highlight the applications of two complementary tools for measuring photosynthesis - variable chlorophyll-a fluorescence and photorespirometry - and provide guidance for the integration of physiology and ecology to understand the drivers of change in macroalgal communities...
February 16, 2017: Journal of Phycology
https://www.readbyqxmd.com/read/28204969/convergent-evolution-of-the-osmoregulation-system-in-decapod-shrimps
#6
Jianbo Yuan, Xiaojun Zhang, Chengzhang Liu, Hu Duan, Fuhua Li, Jianhai Xiang
In adaptating to different aquatic environments, seawater (SW) and freshwater (FW) shrimps have exploited different adaptation strategies, which should generate clusters of genes with different adaptive features. However, little is known about the genetic basis of these physiological adaptations. Thus, in this study, we performed comparative transcriptomics and adaptive evolution analyses on SW and FW shrimps and found that convergent evolution may have happened on osmoregulation system of shrimps. We identified 275 and 234 positively selected genes in SW and FW shrimps, respectively, which enriched in the functions of ion-binding and membrane-bounded organelles...
February 15, 2017: Marine Biotechnology
https://www.readbyqxmd.com/read/28203647/the-potential-of-blue-lupins-as-a-protein-source-in-the-diets-of-laying-hens
#7
Michael R F Lee, Sarah Parkinson, Hannah R Fleming, Vince J Theobald, Dave K Leemans, Tony Burgess
Layers diets typically contain 15-20% soya due to its high crude protein content (ca. 36%). Reliance on soya for protein can result in large increases in cost of feed due to the law of supply and demand as a global commodity. Lupin grains have high protein content (35-40%) but previous experience with white lupins has shown toxic effects in poultry due to high levels alkaloids and poor performance due to anti-nutritional Non-starch polysaccharides (NSP). Here blue lupins either processed or whole were trialled for their potential as a protein source...
December 2016: Veterinary and Animal Science
https://www.readbyqxmd.com/read/28203276/a-biorefinery-scheme-to-fractionate-bamboo-into-high-grade-dissolving-pulp-and-ethanol
#8
Zhaoyang Yuan, Yangbing Wen, Nuwan Sella Kapu, Rodger Beatson, D Mark Martinez
BACKGROUND: Bamboo is a highly abundant source of biomass which is underutilized despite having a chemical composition and fiber structure similar as wood. The main challenge for the industrial processing of bamboo is the high level of silica, which forms water-insoluble precipitates negetively affecting the process systems. A cost-competitive and eco-friendly scheme for the production of high-purity dissolving grade pulp from bamboo not only requires a process for silica removal, but also needs to fully utilize all of the materials dissolved in the process which includes lignin, and cellulosic and hemicellulosic sugars as well as the silica...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28202244/changes-in-land-uses-and-ecosystem-services-under-multi-scenarios-simulation
#9
Jingya Liu, Jing Li, Keyu Qin, Zixiang Zhou, Xiaonan Yang, Ting Li
Social economy of China has been rapidly developing for more than 30years with efficient reforms and policies being issued. Societal developments have resulted in a greater use of many natural resources to the extent that the ecosystem can no longer self-regulate, thus severely damaging the balance of the ecosystem itself. This in turn has led to a deterioration in people's living environments. Our research is based on a combination of climate scenarios presented in the fifth report of the Intergovernmental Panel on Climate Change (IPCC) and policy scenarios, including the one-child policy and carbon tax policy...
February 12, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28196754/determination-of-groundwater-recharge-mechanism-in-the-deep-loessial-unsaturated-zone-by-environmental-tracers
#10
Zhi Li, Xi Chen, Wenzhao Liu, Bingcheng Si
Studying the groundwater recharge mechanism in regions with thick unsaturated zone can greatly improve our understanding of hydrological processes since these regions have complex groundwater processes. This study attempted to discuss the groundwater recharge in a region covered by loess over 130m deep in China's Loess Plateau. The water stable isotope, tritium and chloride in precipitation, groundwater and soil water were determined and used as inputs of mass balance methods. The tracer technique is found to be applicable and effective this region with thick unsaturated zone...
February 10, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28196670/fluid-balance-and-chloride-load-in-the-first-24h-of-icu-admission-and-its-relation-with-renal-replacement-therapies-through-a-multicentre-retrospective-case-control-study-paired-by-apache-ii
#11
A González-Castro, M Ortiz-Lasa, O Leizaola, E Salgado, T Irriguible, M Sánchez-Satorra, C Lomas-Fernández, P Barral-Segade, M Cordero-Vallejo, E Rodrigo-Calabia, T Dierssen-Sotos
OBJECTIVE: To analyse the association between water balance during the first 24h of admission to ICU and the variables related to chloride levels (chloride loading, type of fluid administered, hyperchloraemia), with the development of acute kidney injury renal replacement therapy (AKI-RRT) during patients' admission to ICU. PATIENTS AND METHODS: Multicentre case-control study. Hospital-based, national, carried out in 6 ICUs. Cases were patients older than 18 years who developed an AKI-RRT...
February 10, 2017: Revista Española de Anestesiología y Reanimación
https://www.readbyqxmd.com/read/28195489/composition-and-stability-of-plasma-polymer-films-exhibiting-vertical-chemical-gradients
#12
Patrick Rupper, Marianne Vandenbossche, Laetitia Bernard, Dirk Hegemann, Manfred P Heuberger
Controlling the balance between stability and functional group density in grown plasma polymer films is the key to diverse applications such as drug release, tissue-engineered implants, filtration, contact lenses, microfluidics, electrodes, sensors, etc. Highly functional plasma polymer films typically show a limited stability in air or aqueous environments due to mechanisms like molecular reorganization, oxidation and hydrolysis. Stabilization is achieved by enhancing cross-linking at the cost of the terminal functional groups such as -OH and -COOH, but also -NH2 etc...
February 14, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28193891/mapping-evaporative-water-loss-in-desert-passerines-reveals-an-expanding-threat-of-lethal-dehydration
#13
Thomas P Albright, Denis Mutiibwa, Alexander R Gerson, Eric Krabbe Smith, William A Talbot, Jacqueline J O'Neill, Andrew E McKechnie, Blair O Wolf
Extreme high environmental temperatures produce a variety of consequences for wildlife, including mass die-offs. Heat waves are increasing in frequency, intensity, and extent, and are projected to increase further under climate change. However, the spatial and temporal dynamics of die-off risk are poorly understood. Here, we examine the effects of heat waves on evaporative water loss (EWL) and survival in five desert passerine birds across the southwestern United States using a combination of physiological data, mechanistically informed models, and hourly geospatial temperature data...
February 13, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28193816/ontogenetic-adaptations-in-the-visual-systems-of-deep-sea-crustaceans
#14
Tamara M Frank
For all visually competent organisms, the driving force behind the adaptation of photoreceptors involves obtaining the best balance of resolution to sensitivity in the prevailing light regime, as an increase in sensitivity often results in a decrease in resolution. A number of marine species have an additional problem to deal with, in that the juvenile stages live in relatively brightly lit shallow (100-200 m depth) waters, whereas the adult stages have daytime depths of more than 600 m, where little downwelling light remains...
April 5, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28192628/evaluation-of-climate-related-carbon-turnover-processes-in-global-vegetation-models-for-boreal-and-temperate-forests
#15
Martin Thurner, Christian Beer, Philippe Ciais, Andrew D Friend, Akihiko Ito, Axel Kleidon, Mark R Lomas, Shaun Quegan, Tim T Rademacher, Sibyll Schaphoff, Markus Tum, Andy Wiltshire, Nuno Carvalhais
Turnover concepts in state-of-the-art global vegetation models (GVMs) account for various processes, but are often highly simplified and may not include an adequate representation of the dominant processes that shape vegetation carbon turnover rates in real forest ecosystems at a large spatial scale. Here we evaluate vegetation carbon turnover processes in GVMs participating in the Inter-Sectoral Impact Model Intercomparison Project (ISI-MIP; including HYBRID4, JeDi, JULES, LPJml, ORCHIDEE, SDGVM, and VISIT) using estimates of vegetation carbon turnover rate (k) derived from a combination of remote sensing based products of biomass and net primary production (NPP)...
February 13, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28192367/the-occurrence-of-enhanced-biological-phosphorus-removal-in-a-200-000-m-3-day-partial-nitration-and-anammox-activated-sludge-process-at-the-changi-water-reclamation-plant-singapore
#16
Yeshi Cao, Bee Hong Kwok, Mark C M van Loosdrecht, Glen T Daigger, Hui Yi Png, Wah Yuen Long, Chua Seng Chye, Yahya A B D Ghani
Mainstream partial nitritation and Anammox (PN/A) has been observed and studied in the step-feed activated sludge process at the Changi water reclamation plant (WRP), which is the largest WRP (800,000 m(3)/d) in Singapore. This paper presents the study results for enhanced biological phosphorus removal (EBPR) co-existing with PN/A in the activated sludge process. Both the in-situ EBPR efficiency and ex-situ activities of phosphorus release and uptake were high. The phosphorus accumulating organisms were dominant, with little presence of glycogen accumulating organisms in the activated sludge...
February 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28192366/strategies-for-achieving-energy-neutrality-in-biological-nutrient-removal-systems-a-case-study-of-the-slupsk-wwtp-northern-poland
#17
Ewa Zaborowska, Krzysztof Czerwionka, Jacek Makinia
The paper presents a model-based evaluation of technological upgrades on the energy and cost balance in a large biological nutrient removal (BNR) wastewater treatment plant (WWTP) in the city of Slupsk (northern Poland). The proposed upgrades include chemically enhanced primary sludge removal and reduction of the nitrogen load in the deammonification process employed for reject water treatment. Simulations enabled to estimate the increased biogas generation and decreased energy consumption for aeration. The proposed upgrades may lead the studied WWTP from the energy deficit to energy neutrality and positive cost balance, while still maintaining the required effluent standards for nitrogen...
February 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28189051/changes-in-root-hydraulic-conductivity-facilitate-the-overall-hydraulic-response-of-rice-oryza-sativa-l-cultivars-to-salt-and-osmotic-stress
#18
Delong Meng, Wieland Fricke
The aim of the present work was to assess the significance of changes in root AQP gene expression and hydraulic conductivity (Lp) in the regulation of water balance in two hydroponically-grown rice cultivars (Azucena, Bala) which differ in root morphology, stomatal regulation and aquaporin (AQP) isoform expression. Plants were exposed to NaCl (25 mM, 50 mM) and osmotic stress (5%, 10% PEG6000). Root Lp was determined for exuding root systems (osmotic forces driving water uptake; 'exudation Lp') and transpiring plants (hydrostatic forces dominating; 'transpiration-Lp')...
February 2, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28188725/physiological-correlates-of-chill-susceptibility-in-lepidoptera
#19
Mads Kuhlmann Andersen, Signe Overgaard Jensen, Johannes Overgaard
The majority of insects enter a state of reversible coma if temperature is lowered sufficiently. If the cold treatment is not to severe these insects recover gradually when returned to benign temperatures in a time-dependent manner that often depends on the duration and intensity of the cold exposure. Previous studies have associated these phenotypes to changes in membrane potential (Vm) and ion balance, and especially hemolymph [K(+)] is known to be of importance for the recovery time. In the present study we examined this link in three species of Lepidoptera as insects from this order are known to possess resting hemolymph [K(+)] that would severely compromise Vm in other insects...
February 7, 2017: Journal of Insect Physiology
https://www.readbyqxmd.com/read/28188541/the-impact-of-granule-density-on-tabletting-and-pharmaceutical-product-performance
#20
Sander van den Ban, Daniel J Goodwin
PURPOSE: The impact of granule densification in high-shear wet granulation on tabletting and product performance was investigated, at pharmaceutical production scale. Product performance criteria need to be balanced with the need to deliver manufacturability criteria to assure robust industrial scale tablet manufacturing processes. A Quality by Design approach was used to determine in-process control specifications for tabletting, propose a design space for disintegration and dissolution, and to understand the permitted operating limits and required controls for an industrial tabletting process...
February 10, 2017: Pharmaceutical Research
keyword
keyword
79887
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"