AIMS Environmental Science最新文献_第9页

Valorization of second cheese whey through cultivation of extremophile microalga Galdieria sulphuraria 嗜极微藻硫酸Galdieria suluraria的培养对干酪乳清的增值作用

IF 1.4

AIMS Environmental Science Pub Date : 2021-01-01 DOI: 10.3934/environsci.2021028

G. Russo, A. Langellotti, M. Oliviero, Marco Baselice, R. Sacchi, P. Masi

{"title":"Valorization of second cheese whey through cultivation of extremophile microalga Galdieria sulphuraria","authors":"G. Russo, A. Langellotti, M. Oliviero, Marco Baselice, R. Sacchi, P. Masi","doi":"10.3934/environsci.2021028","DOIUrl":"https://doi.org/10.3934/environsci.2021028","url":null,"abstract":"<abstract> <p>Second cheese whey (SCW) or \"<italic>scotta</italic>\" in Italian, is a side-stream from the manufacturing of \"<italic>Ricotta</italic>\" cheese, obtained after thermal coagulation of whey proteins residue in the cheese whey. <italic>Galdieria sulphuraria</italic> is a thermophilic red algae well known for its metabolic capabilities to grow on wastewater and other saline effluents. In this work, the valorisation of SCW as nutrient source for the growth of <italic>G. sulphuraria</italic> has been investigated using different concentrations of SCW. The biochemical and fatty acids composition of the biomass obtained has been evaluated too. Small differences have been observed in terms of biomass obtained after 12 days of cultivation between the SCW media and the relative control with the same amount of reducing sugars. The fatty acids composition of <italic>G. sulphuraria</italic> grown in SCW showed a higher content of polyunsaturated fatty acids compared to the control. The biomass productivity using SCW media has also been optimized through response surface methodologies with supplementation of nitrogen source obtaining a biomass dry weight higher than 10 g L<sup>-1</sup>.</p> </abstract>","PeriodicalId":45143,"journal":{"name":"AIMS Environmental Science","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70231007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

Landscape management and economic evaluation of the ecosystem services of the vineyards 葡萄园生态系统服务的景观管理和经济评价

IF 1.4

AIMS Environmental Science Pub Date : 2021-01-01 DOI: 10.3934/environsci.2021025

F. Sgroi

{"title":"Landscape management and economic evaluation of the ecosystem services of the vineyards","authors":"F. Sgroi","doi":"10.3934/environsci.2021025","DOIUrl":"https://doi.org/10.3934/environsci.2021025","url":null,"abstract":"The contribution aims to highlight the relationship between the business economy applied to viticulture and the ecosystem. The concepts of ecosystem services and viticultural biodiversity are seen in order to provide a new perspective for the development of a more sustainable business management. The work contributes to enriching the economic literature by introducing the relationship between ecosystem and business. The new perspective helps to place the company within the wider ecological-social system, favoring a more consistent interpretation of the relationship of exchange (impact and dependence) of resources with nature. The work proposes a methodology for calculating the ecosystem service rendered by the vineyards cultivated in the Sicilian hills. The conceptual scheme and the methodology adopted highlight the value of the ecosystem service. Certainly, for the future, it is necessary to create business models where ecosystem services find a remuneration as the entrepreneur is led to adopt cultivation practices in this sense only if he finds a remuneration from the public or private sector. Ecosystem services are important to protect the landscape and the environment. The paper proposes a land management method that respects the environmental balance. This approach leads to long-term value creation at both the micro and macroeconomic levels.","PeriodicalId":45143,"journal":{"name":"AIMS Environmental Science","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70230855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Health physics calculation framework for environmental impact assessment of radiological contamination 放射性污染环境影响评价卫生物理计算框架

IF 1.4

AIMS Environmental Science Pub Date : 2021-01-01 DOI: 10.3934/environsci.2021026

F. Teodori

引用次数: 1

Shark bite survivors advocate for non-lethal shark mitigation measures in Australia 在澳大利亚，鲨鱼咬伤幸存者提倡采取非致命的鲨鱼减少措施

IF 1.4

AIMS Environmental Science Pub Date : 2021-01-01 DOI: 10.3934/environsci.2021036

Michael J. Rosciszewski-Dodgson, G. Cirella

引用次数: 1

A case study of management and disposal of TENORMs: radiological risk estimation by TSD Dose and RESRAD-ONSITE TENORMs管理与处置个案研究:基于TSD剂量与resrad - site的辐射风险评估

IF 1.4

AIMS Environmental Science Pub Date : 2021-01-01 DOI: 10.3934/environsci.2021030

F. Giacobbo, M. D. Ros, E. Macerata, E. Mossini

{"title":"A case study of management and disposal of TENORMs: radiological risk estimation by TSD Dose and RESRAD-ONSITE","authors":"F. Giacobbo, M. D. Ros, E. Macerata, E. Mossini","doi":"10.3934/environsci.2021030","DOIUrl":"https://doi.org/10.3934/environsci.2021030","url":null,"abstract":"Naturally Occurring Radioactive Materials (NORMs) and Technologically Enhanced NORMs (TENORMs) are among the principal sources of radiation exposure for humans and for the environment. Therefore, the assessment of the impact of NORMs and TENORMs waste on human health is a key issue for their management and for acceptance of disposal sites. The radiological doses to workers and public due to TENORMs disposal depend on the waste inventory, on the usage of the site during operational activities and post closure phase and on the presence of dwelling areas in the vicinity of the disposal site. In the present study it is presented a methodology to preliminary assess the feasibility of a disposal of TENORMs, mainly constituted by phosphate sludges, originated from phosphoric acid industry activities. The hypothetical case study here presented is inspired by a real case study. Different possible scenarios have been considered. The potential doses to workers and to the public on-site have been estimated by the use of the TSD Dose and the RESRAD on-site codes both during the production life cycle of the site and once it ended. Sensitivity analyses were conducted to evaluate the impact of some key parameters, such the coverage thickness and wind velocity, on potential risk for workers and public.","PeriodicalId":45143,"journal":{"name":"AIMS Environmental Science","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70231079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Atmospheric transport and mixing of biological soil crust microorganisms 生物土壤结皮微生物的大气输送与混合

IF 1.4

AIMS Environmental Science Pub Date : 2021-01-01 DOI: 10.3934/environsci.2021032

S. Warren, L. L. Clair

{"title":"Atmospheric transport and mixing of biological soil crust microorganisms","authors":"S. Warren, L. L. Clair","doi":"10.3934/environsci.2021032","DOIUrl":"https://doi.org/10.3934/environsci.2021032","url":null,"abstract":"Biological soil crusts (BSCs) are created where a diverse array of microorganisms colonize the surface and upper few millimeters of the soil and create a consolidated crust. They were originally described from arid ecosystems where vascular vegetation is naturally sparse or absent. They have since been discovered in all terrestrial ecosystems. Where present, they perform a variety of important ecological functions, including the capture and accumulation of water and essential plant nutrients, and their release in forms useful to vascular plants. They also stabilize the soil surface against wind and water erosion. BSC organisms include fungi (free-living, lichenized, and mycorrhizal), archaea, bacteria (cyanobacteria and chemotrophic and diazotrophic bacteria), terrestrial algae (including diatoms), and bryophytes (mosses and worts). BSC organisms reproduce primarily asexually via thallus or main body fragmentation or production of asexual spores that are readily dispersed by water and wind. Asexual and sexual propagules of BSC organisms are commonly lifted into the air with vast quantities of dust from the world's arid areas. BSC organisms and/or their propagules have been detected as high as the stratosphere. Some have also been detected in the mesosphere. Airborne dust, microorganisms, and their propagules contribute to the formation of essential raindrop and snowflake nuclei that, in turn, facilitate precipitation events. While airborne in the atmosphere, they also reflect the sun's rays passing laterally through the troposphere and stratosphere at dawn and dusk, often causing brilliant colors at sunrise and sunset.","PeriodicalId":45143,"journal":{"name":"AIMS Environmental Science","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70231121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Anaerobic enrichment of Bacillus alkylbenzene remedial consortia from waste biomass melanoid sources 废生物质类黑素源对烷基苯芽孢杆菌的厌氧富集

IF 1.4

AIMS Environmental Science Pub Date : 2021-01-01 DOI: 10.3934/environsci.2021022

Hsiao-Dao Chang, XiuYou Wan, Hsiao-Chen Huang, Yi-Su Chen, Chao-Ying Chen

{"title":"Anaerobic enrichment of Bacillus alkylbenzene remedial consortia from waste biomass melanoid sources","authors":"Hsiao-Dao Chang, XiuYou Wan, Hsiao-Chen Huang, Yi-Su Chen, Chao-Ying Chen","doi":"10.3934/environsci.2021022","DOIUrl":"https://doi.org/10.3934/environsci.2021022","url":null,"abstract":"Bioremediation of alkylbenzenes, including toluene, ethylbenzene and xylenes, was performed using fermentable aromatic sources and electron mediators by Bacillus cereus 301 in a limited oxygen state. The fermentation of small fermentable aromatic melanoids from cow manure as soluble humus hydrolysates or sugarcane molasses as saccharine, glucose and limited basal medium was compared. Thus, an evaluation model of exponential decline against a control was incorporated for interpretation of remedial data. The significance of the present strategy for constructing multivariant effects of electron donors could be objectively judged by pattern comparison with the short-term data analyzed. Thus, grafted aromatics as methyl- or ethylbenzene require much more microbial reaction time, even with mixed aromatic donors or stronger electron donors such as methanol in the original reduced medium, as indicated in the scatter chart. However, completion of the remedial time was needed by the kinetic simulation, and even low, smooth data were expressed. Among the exponential decay curves indicated, the carbon sources in the mix were favorably expressed. The smooth pattern indicated that fermentations with glucose and molasses showed lower remedial activity than melanoids or the indole series. The vigor increase was better for melanoid carbon in the initial fermentation of 24 h, while molasses increased later at 72 h and was more quenched by amending indole acetic acid (IAA) or indole expression. The molecular interaction of the electron mediator indole acetic acid in most trials indicated a quenched effect on toluene and ethylbenzene degradation, even when mixed with the original reducing medium, but expressed better with molasses in both kinetic simulations and growth effects. Thus, combining electron mediators such as IAA for Bacillus may offer a new degradation route for the metabolite alkylbenzene, which is worth further exploration for environmental aromatic waste remediation and combined restoration strategies.","PeriodicalId":45143,"journal":{"name":"AIMS Environmental Science","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70230804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Gaussian process regression for predicting water quality index: A case study on Ping River basin, Thailand 高斯过程回归预测水质指数——以泰国平河流域为例

IF 1.4

AIMS Environmental Science Pub Date : 2021-01-01 DOI: 10.3934/environsci.2021018

Kamonrat Suphawan, Kuntalee Chaisee

{"title":"Gaussian process regression for predicting water quality index: A case study on Ping River basin, Thailand","authors":"Kamonrat Suphawan, Kuntalee Chaisee","doi":"10.3934/environsci.2021018","DOIUrl":"https://doi.org/10.3934/environsci.2021018","url":null,"abstract":"The water quality index (WQI) is an aggregated indicator used to represent the overall quality of water for any intended use. It is typically calculated from several biological, chemical, and physical parameters. Assessment of factors that affect the WQI is then essential. Climate change is expected to impact a wide range of water quality issues; hence, climate variables are likely to be significant factors to evaluate the WQI. We propose three statistical models; multiple linear regression (MLR), artificial neuron network (ANN), and Gaussian process regression (GPR) to assess the WQI using the climate variables. The data is the WQI of Ping River, which flows through the provinces in the north of Thailand. The climate variables are temperature, humidity, total rainfall, and evaporation. A comparison between these models is determined by model prediction accuracy scores. The results show that the total rainfall is the most significant variable to predict the WQI for the Ping River. Although these three methods can predict the WQI relatively good, overall, the GPR model performs better than the MLR and the ANN. Besides, the GPR is more flexible as it can relax some restrictions and assumptions. Therefore, the GPR is appropriate to assess the WQI under the climate variables for the Ping River.","PeriodicalId":45143,"journal":{"name":"AIMS Environmental Science","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70230737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

The interactive effects of fertilizer and water stress on plant growth, leaf gas exchange and nutrient uptake on strawberry (Fragaria x ananassa, Duch) 肥、水胁迫对草莓生长、叶片气体交换和养分吸收的互作效应

IF 1.4

AIMS Environmental Science Pub Date : 2021-01-01 DOI: 10.3934/environsci.2021038

Yenni, M. H. Ibrahim, R. Nulit, S. Sakimin

{"title":"The interactive effects of fertilizer and water stress on plant growth, leaf gas exchange and nutrient uptake on strawberry (Fragaria x ananassa, Duch)","authors":"Yenni, M. H. Ibrahim, R. Nulit, S. Sakimin","doi":"10.3934/environsci.2021038","DOIUrl":"https://doi.org/10.3934/environsci.2021038","url":null,"abstract":"Strawberry (Fragaria x ananassa Duch) has a large number of nutrients, which are useful for human health. In Indonesia, water stress is one of the climate changes that affect the growth and quality of strawberry. Therefore, fast recovery can be crucial to adjusting crops to water stress. Additional fertilizers can alleviate the negative impact of water stress. The experiment was carried out to determine the best fertilizer sources for the growth, leaf gas exchange, and nutrient uptake of strawberry under water-stressed conditions in April 2019–August 2019. The experiment was arranged in a factorial randomized completely block design (RCBD) with three replications and four fertilizer sources (P1 = without fertilizer, P2 = 92:90:90 kg/ha Nitrogen:Phosphorus:Potassium (NPK) fertilizer, P3 = 20 kg/ha goat dung fertilizer, P4 = 46:45:45 kg/ha NPK fertilizer + 10 kg/ha goat dung fertilizer) and water stress levels (W1 = daily irrigation 100% field capacity (FC); W2 = 2 days irrigation interval (Ⅱ) 75% FC; W3 = 6 Ⅱ 75% FC). It was observed that the interaction of different water stress and fertilizer sources had a significant effect on all parameters except in the total sugar of strawberry fruits. The results indicate that plant growth, leaf gas exchange and nutrient uptake decreased under water stress conditions whereas total proline, total sugar, and water use efficiency (WUE) enhanced. The maximum value of plant height, leaves number, shoot-root fresh weight, shoot-root dry weight, photosynthesis rate, chlorophyll content, nitrogen content and phosphorus content were obtained from the application of 46:45:45 kg/ha NPK fertilizer + 10 kg/ha goat dung fertilizer at 2 days Ⅱ 75% FC. Application of NPK and goat dung fertilizers increased the growth and leaf gas exchange under water stress conditions. Plants that were not fertilized had the lowest growth compared to those with fertilizers.","PeriodicalId":45143,"journal":{"name":"AIMS Environmental Science","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70231038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Antibiotic resistance from, and to the environment 对环境的抗生素耐药性

IF 1.4

AIMS Environmental Science Pub Date : 2021-01-01 DOI: 10.3934/ENVIRONSCI.2021002

C. Amábile-Cuevas, Po Box Mexico City Mexico Fundacion Lusara

引用次数: 9