218,562 results match your criteria nutrient withdrawal

Wastewater treatment and fouling control in an electro algae-activated sludge membrane bioreactor.

Sci Total Environ 2021 Apr 30;786:147475. Epub 2021 Apr 30.

Sanitary Environmental Engineering Division (SEED), Department of Civil Engineering, University of Salerno, 84084 Fisciano, Italy. Electronic address:

The effect of addition of algae to activated sludge as active biomass in membrane bioreactors (MBRs) and electro-MBRs (e-MBRs) for wastewater remediation was examined in this study. The performances of Algae-Activated Sludge Membrane Bioreactor (AAS-MBR) and electro Algae-Activated Sludge Membrane Bioreactor (e-AAS-MBR) were compared to those observed in conventional MBR and e-MBR, which were previously reported and utilized activated sludge as biomass. The effect of application of electric field was also examined by the comparison of performances of e-AAS-MBR and AAS-MBR. Read More

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Discovery and application of dietary compounds to optimize human health, a focus on skeletal muscle regeneration.

Curr Opin Biotechnol 2021 May 7;70:131-135. Epub 2021 May 7.

Division of Nutritional Sciences, Cornell University, Ithaca, NY, United States.

Worldwide, the number of persons over the age of 65 years and those at risk of malnutrition (over and under) is growing, and the prevalence of diet-related chronic disease is at a record high. Pathologies that are linked to poor nutrition underlie the leading causes of death. Safe and effective strategies to improve human health outcomes are urgently required. Read More

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Non-conventional water reuse in agriculture: A circular water economy.

Water Res 2021 Apr 26;199:117193. Epub 2021 Apr 26.

Applied Material Division, Argonne National Laboratory, 9700 S. Cass Ave., Argonne, IL 60439, United States.

Due to the growing and diverse demands on water supply, exploitation of non-conventional sources of water has received much attention. Since water consumption for irrigation is the major contributor to total water withdrawal, the utilization of non-conventional sources of water for the purpose of irrigation is critical to assuring the sustainability of water resources. Although numerous studies have been conducted to evaluate and manage non-conventional water sources, little research has reviewed the suitability of available water technologies for improving water quality, so that water reclaimed from non-conventional supplies could be an alternative water resource for irrigation. Read More

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Fluoride and nitrate contamination of groundwater in the Loess Plateau, China: Sources and related human health risks.

Environ Pollut 2021 May 4;286:117287. Epub 2021 May 4.

College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, 712100, China. Electronic address:

Fluoride (F) and nitrate (NO) in groundwater have caused serious health problems worldwide. However, in the Chinese Loess Plateau where groundwater is the primary source of drinking water, previous studies have rarely reported the health risks from fluoride and nitrate in groundwater. Therefore, we collected 105 groundwater samples (78 from shallow aquifers and 27 from deep aquifers) from the western district of the Loess Plateau for physicochemical and isotopic analysis to investigate the sources of F and NO in groundwater and associated health risks. Read More

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Nutrient concentrations and distribution of phytoplankton pigments in recently deposited sediments of a positive tropical estuary.

Mar Pollut Bull 2021 May 8;168:112454. Epub 2021 May 8.

Kerala University of Fisheries and Ocean Studies, Kochi, India. Electronic address:

Investigation of nutrients in the water column and phytoplankton pigments in recently formed modern sediments (0-5 cm) was carried out in Cochin estuary. The anthropogenic impacts were assessed using nutrients, nitrate, and phosphate in combination with phytopigments in sediments. The nitrate and phosphate concentration during the study ranged from 0. Read More

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Detecting pollutant sources and pathways: High-frequency automated online monitoring in a small rural French/German transborder catchment.

J Environ Manage 2021 May 7;290:112619. Epub 2021 May 7.

Institute of Inorganic and Analytical Chemistry, Saarland University, Dudweiler Zeile 4, 66125, Saarbruecken, Germany.

Great temporal and spatial variability of inputs make comprehensive monitoring in small and middle sized rivers difficult. In this study, relevant inputs in a small river were recorded with suitable online monitoring equipment coupled in mobile water quality monitoring stations, the study area being a transborder catchment with French and German (Saarland federal state) subcatchments. In addition to a pronounced spatial variability necessitating a denser net of measuring points this catchment has also to be assessed in the light of different national regulations. Read More

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Detection of chlorophyll fluorescence parameters of potato leaves based on continuous wavelet transform and spectral analysis.

Spectrochim Acta A Mol Biomol Spectrosc 2021 Apr 2;259:119768. Epub 2021 Apr 2.

Key Laboratory of Modern Precision Agriculture System Integration Research, Ministry of Education, China Agricultural University, Beijing 100083, China. Electronic address:

The tuber development and nutrient transportation of potato crops are closely related to canopy photosynthesis dynamics. Chlorophyll fluorescence parameters of photosystem II, especially the maximum quantum yield of primary photochemistry (Fv/Fm), are intrinsic indicators for plant photosynthesis. Rapid detection of Fv/Fm of leaves by spectroscopy method instead of time-consuming pulse amplitude modulation technique could help to indicate potato development dynamics and guide field management. Read More

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Overview of the latest developments in the role of probiotics, prebiotics and synbiotics in shrimp aquaculture.

Fish Shellfish Immunol 2021 May 7. Epub 2021 May 7.

Ocean College, Zhejiang University, Zhoushan, 316021, China. Electronic address:

With the growing world population, the demand for food has increased, leading to excessive and intensive breeding and cultivation of fisheries, simultaneously exacerbating the risk of disease. Recently, shrimp producers have faced major losses of stocks due to the prevalence of periodical diseases and inappropriate use of antibiotics for disease prevention and treatment, leading to bacterial resistance in shrimp, along with imposing health hazards on human consumers. Strict regulations have been placed to ban or reduce the use of prophylactic antibiotics to lessen their detrimental effects on aquatic life. Read More

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ANEMI3: An updated tool for global change analysis.

PLoS One 2021 10;16(5):e0251489. Epub 2021 May 10.

Department of Civil and Environmental Engineering, Western University, London, Canada.

The ANEMI model is an integrated assessment model of global change that emphasizes the role of water resources. The model is based on the principles of system dynamics simulation to analyze changes in the Earth system using feedback processes. Securing water resources for the future is a key issue of global change, and ties into global systems of population growth, climate change, carbon cycle, hydrologic cycle, economy, energy production, land use and pollution generation. Read More

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Current and next-year cranberry yields predicted from local features and carryover effects.

PLoS One 2021 10;16(5):e0250575. Epub 2021 May 10.

Département des Sols et de Génie Agroalimentaire, Université Laval, Québec, Québec, Canada.

Wisconsin and Quebec are the world leading cranberry-producing regions. Cranberries are grown in acidic, naturally low-fertility sandy beds. Cranberry fertilization is guided by general soil and tissue nutrient tests in addition to yield target and vegetative biomass. Read More

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Microwave applications in the food industry: an overview of recent developments.

Crit Rev Food Sci Nutr 2021 May 10:1-20. Epub 2021 May 10.

Department of Animal Products Technology, Faculty of Food Technology, University of Agriculture, Poland in Cracow, Krakow.

Microwave radiation has the ability to heat a material with dielectric properties. Material absorbs microwave energy and then converts it into heat, which gives the possibility of a wide use of microwaves in many industry sectors or agricultural sciences. Microwaves are especially widely used in food industry. Read More

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Magnesium depletion extends fission yeast lifespan via general amino acid control activation.

Microbiologyopen 2021 Mar;10(2):e1176

Laboratory of Molecular Microbiology, Graduate School of Pharmaceutical Sciences, Nagoya University, Nagoya, Japan.

Nutrients including glucose, nitrogen, sulfur, zinc, and iron are involved in the regulation of chronological lifespan (CLS) of yeast, which serves as a model of the lifespan of differentiated cells of higher organisms. Herein, we show that magnesium (Mg ) depletion extends CLS of the fission yeast Schizosaccharomyces pombe through a mechanism involving the Ecl1 gene family. We discovered that ecl1 expression, which extends CLS, responds to Mg depletion. Read More

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Long-term continuous cropping affects ecoenzymatic stoichiometry of microbial nutrient acquisition: A case study from a Chinese Mollisol.

J Sci Food Agric 2021 May 10. Epub 2021 May 10.

Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin, 150081.

Background: Soil- and plant-produced extracellular enzymes drive nutrient cycling in soils and are thought to be regulated supply and demand for carbon (C) and nutrients within the soil. Thus, agriculture management decisions that alter the balance of plant and supplemental nutrients should directly alter extracellular enzyme activities (EEAs), and EEA stoichiometry in predictable ways. We used a 12-year experiment varying three major continuous grain crops (wheat, soybean, and maize) each crossed with mineral fertilizer (WCF, SCF, and MCF, respectively) or not fertilized (WC, SC, and MC, respectively, as controls). Read More

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Dairy cattle nutrition and feed calculator-an android application.

Trop Anim Health Prod 2021 May 10;53(2):315. Epub 2021 May 10.

Department of Electronics & Communication, K.L.E. Institute of Technology, Hubballi, Karnataka, India.

The dairy farmers in the tropical region have limitations regarding "feedstuffs" available. A software program is required to meet the nutrient requirement with the available feeds at the cheapest cost. There are many techniques/software that are implemented to meet dairy animal nutrient requirements. Read More

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Is Resource Change a Useful Predictor of Carrion Insect Succession on Pigs and Humans?

J Med Entomol 2021 May 10. Epub 2021 May 10.

School of Science, Psychology and Sport, Federation University Australia, Mount Helen, VIC 3350,Australia.

Carrion is a dynamic and nutrient-rich resource that attracts numerous insect species that undergo succession due to the rapid change in the carrion resource. Despite this process being well-understood, few studies have examined resource change as a driver of carrion insect succession, and instead have focused on the effects of time per se, or on coarse, qualitative measures such as decay stage. Here we report on three field succession experiments using pig carcasses and human cadavers encompassing two winters and one summer. Read More

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Household food spending, parental and childhood's diet quality, in financial crisis: a cross-sectional study in Greece.

Eur J Public Health 2021 May 10. Epub 2021 May 10.

Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University, Athens, Greece.

Background: Over the past decade, the financial crisis has affected harshly the household income of Greek people. This study aimed to investigate whether the effect of the financial crisis on food spending has affected the dietary habits in the family environment.

Methods: Under a cross-sectional study conducted during 2014-2016, 1145 children and their parents completed questionnaires examining socio-economic and dietary characteristics. Read More

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A novel ATP dependent dimethylsulfoniopropionate lyase in bacteria that releases dimethyl sulfide and acryloyl-CoA.

Elife 2021 May 10;10. Epub 2021 May 10.

College of Marine Life Sciences, Ocean University of China, Qingdao, China.

Dimethylsulfoniopropionate (DMSP) is an abundant and ubiquitous organosulfur molecule in marine environments with important roles in global sulfur and nutrient cycling. Diverse DMSP lyases in some algae, bacteria and fungi cleave DMSP to yield gaseous dimethyl sulfide (DMS), an infochemical with important roles in atmospheric chemistry. Here we identified a novel ATP-dependent DMSP lyase, DddX. Read More

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First Report of Bud Soft Rot on Agave angustifolia Caused by Pantoea dispersa in Mexico.

Plant Dis 2021 May 10. Epub 2021 May 10.

Facultad de Ciencias Agropecuarias y Ambientales de la Universidad Autónoma de Guerrero, Departamento de Agronomía, Iguala de la Independencia, C.P. 40020, Guerrero, Mexico;

The agave (Agave spp.) is an important crop in México, with 120,897 ha grown mainly for alcoholic beverage production (SIAP, 2019). In September 2020, in the municipality of Huitzuco de los Figueroa (18. Read More

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First Report of Pantoea ananatis causing leaf spot disease of maize in Ecuador.

Plant Dis 2021 May 10. Epub 2021 May 10.

Universidad UTE , Centro de Investigación de Alimentos, Quito, Pichincha, Ecuador;

Maize (Zea mays) is the second most cultivated grain crop in Ecuador, with growing significance as a source of fodder and food. During the rainy season (November and December) of 2018 and 2019, a disease of maize that was not previously observed in Ecuador was found at commercial fields of Misqui Sara variety, at four parishes of canton Quito (Tumbaco, Pifo, Puembo, and Checa), province of Pichincha. Infected plants, at tassel initiation, displayed symptoms of localized chlorotic streaks on leaves that expanded with time, and around a month later turned necrotic. Read More

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Clinical Findings in Healthy Dogs Fed With Diets Characterized by Different Carbohydrates Sources.

Front Vet Sci 2021 22;8:667318. Epub 2021 Apr 22.

Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy.

In recent years, pet owners have become more interested in the ingredients, and quality of pet-food, and several studies have demonstrated that feed management could affect healthy status. Recently, some authors indicated that commercial diets formulated without cereals, or using unconventional protein, and starch sources, can cause a reduction in taurine levels in both whole blood, and plasma. Nevertheless, the specific mechanism by means of which nutritional factors determine this reduction is not completely clear. Read More

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Rebuilding the Vascular Network: and Approaches.

Front Cell Dev Biol 2021 21;9:639299. Epub 2021 Apr 21.

State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan, China.

As the material transportation system of the human body, the vascular network carries the transportation of materials and nutrients. Currently, the construction of functional microvascular networks is an urgent requirement for the development of regenerative medicine and drug screening systems. How to construct organs with functional blood vessels is the focus and challenge of tissue engineering research. Read More

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An Actinobacterium Strain From Soil of Cerrado Promotes Phosphorus Solubilization and Plant Growth in Soybean Plants.

Front Bioeng Biotechnol 2021 22;9:579906. Epub 2021 Apr 22.

Laboratory of Environmental Microbiology, Embrapa Environment, Jaguariúna, Brazil.

The huge biological diversity of the Brazilian Cerrado is an important source of economically interesting microbial agents. The phylum Actinobacteria plays an important role in nutrient cycling, potentially improving their availability to plants. In this study, we isolated an actinobacteria (strain 3AS4) from wheat rhizospheres of crops cultivated in the Cerrado biome. Read More

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Diet Quality: A Neglected Parameter in Children With Food Allergies. A Cross-Sectional Study.

Front Pediatr 2021 23;9:658778. Epub 2021 Apr 23.

Department of Nutritional Sciences and Dietetics, School of Health Sciences, International Hellenic University, Thermi, Greece.

With recent evidence suggesting that growth is no longer considered a major issue in children with food allergies (FA) on elimination diet, priority has shifted to diet quality to establish healthy eating patterns and prevent non-communicable diseases. The Diet Quality Index - International (DQI-I) could be useful for assessing the overall diet quality of FA-children. This study aimed to evaluate the impact of elimination diet on DQI-I in children with FA and the accuracy of DQI-I in reflecting nutrient intake. Read More

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Involvement of Phosphatases in Parasite Biology and Pathogeny.

Front Cell Infect Microbiol 2021 22;11:633146. Epub 2021 Apr 22.

Instituto de Bioquímica Médica Leopoldo De Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.

In the lifecycle, the motile promastigote form is transmitted from the sand fly vector to a mammalian host during a blood meal. Inside vertebrate host macrophages, the parasites can differentiate into the amastigote form and multiply, causing leishmaniasis, one of the most significant neglected tropical diseases. parasites face different conditions throughout their development inside sand flies. Read More

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Comparative metagenomic analysis of rice soil samples revealed the diverse microbial population and biocontrol organisms against plant pathogenic fungus .

3 Biotech 2021 May 29;11(5):245. Epub 2021 Apr 29.

Molsys Scientific Pvt. Ltd, Bangalore, 560064 India.

Intensive cropping degrades soil quality and disrupts the soil microbiome. To understand the effect of rice monocropping on soil-microbiome, we used a comparative 16S rRNA metagenome sequencing method to analyze the diversity of soil microflora at the genomic level. Soil samples were obtained from five locations viz. Read More

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Mycoplankton Biome Structure and Assemblage Processes Differ Along a Transect From the Elbe River Down to the River Plume and the Adjacent Marine Waters.

Front Microbiol 2021 23;12:640469. Epub 2021 Apr 23.

Molecular Ecology Group, University of Bremen, FB2, Bremen, Germany.

Rivers are transport systems and supply adjacent ecosystems with nutrients. They also serve human well-being, for example as a source of food. Microorganism biodiversity is an important parameter for the ecological balance of river ecosystems. Read More

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Organic Electron Donors and Terminal Electron Acceptors Structure Anaerobic Microbial Communities and Interactions in a Permanently Stratified Sulfidic Lake.

Front Microbiol 2021 23;12:620424. Epub 2021 Apr 23.

Department of Biological Sciences, Wellesley College, Wellesley, MA, United States.

The extent to which nutrients structure microbial communities in permanently stratified lakes is not well understood. This study characterized microbial communities from the anoxic layers of the meromictic and sulfidic Fayetteville Green Lake (FGL), NY, United States, and investigated the roles of organic electron donors and terminal electron acceptors in shaping microbial community structure and interactions. Bacterial communities from the permanently stratified layer below the chemocline (monimolimnion) and from enrichment cultures inoculated by lake sediments were analyzed using 16S rRNA gene sequencing. Read More

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The Use of Defatted Larvae Meal as a Main Protein Source Is Supported in European Sea Bass () by Data on Growth Performance, Lipid Metabolism, and Flesh Quality.

Front Physiol 2021 15;12:659567. Epub 2021 Apr 15.

ICBAS, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal.

Objective: This study aims to determine the maximal inclusion level of defatted (-) larvae meal (TM) able to replace dietary fishmeal (FM) without compromising growth performance, general metabolism, and flesh quality traits in European sea bass, and to evaluate the major underlying physiological mechanisms.

Materials And Methods: Fish (55 ± 2 g) were fed with diets containing increasing levels of TM: 0, 40, 80 and 100% (CTRL, TM40, TM80, and TM100, respectively) to replace FM. After 10 weeks of feeding, the growth performance, nutrient and energy balance, intestinal integrity, plasma metabolites and the expression of genes related to growth and nutrient metabolism, in liver and muscle were determined. Read More

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Short photoperiod attenuates CO fertilization effect on shoot biomass in .

Physiol Mol Biol Plants 2021 Apr 16;27(4):825-834. Epub 2021 Mar 16.

Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW 2751 Australia.

The level of carbon dioxide (CO) in the air can affect several traits in plants. Elevated atmospheric CO (eCO) can enhance photosynthesis and increase plant productivity, including biomass, although there are inconsistencies regarding the effects of eCO on the plant growth response. The compounding effects of ambient environmental conditions such as light intensity, photoperiod, water availability, and soil nutrient composition can affect the extent to which eCO enhances plant productivity. Read More

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Graphene oxide exhibited positive effects on the growth of L.

Physiol Mol Biol Plants 2021 Apr 7;27(4):815-824. Epub 2021 Apr 7.

Institute of Carbon Materials Science, Shanxi Datong University, Datong, 037009 Shanxi Province People's Republic of China.

There is increasing evidence for graphene associated plant growth promotion, however, the chronic effects of soil-applied graphene remain largely unexplored. The present study investigated the morphological, physiological and biochemical responses of graphene oxide (GO) on L. over the concentration range of 0-100 mg/L for four months. Read More

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