quality regulation
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2022 ◽  
Author(s):  
Maritza Cardenas ◽  
Leandro Patinoa ◽  
Beatriz Pernia ◽  
Roberto Erazo ◽  
Carlos Munoz ◽  
...  

Wastewater surveillance represents an alternative approach for the diagnosis and early detection of infectious agents of public health importance. This study aimed to evaluate SARS-CoV-2 and other quality markers in oxidation lagoons, estuarine areas and seawater at Guayas and Santa Elena in Ecuador. Sample collections were conducted twice at 42 coastal sites and 2 oxidation lagoons during dry and rainy seasons (2020-2021). Physico-chemical and microbiological parameters were evaluated to determine organic pollution. Quantitative reverse transcription PCR was conducted to detect SARS-CoV-2. Results showed high levels of Escherichia coli and low dissolved oxygen concentrations. SARS-CoV-2 was detected in sea-waters and estuaries with salinity levels between 34.2-36.4 PSU and 28.8 degrees celsius -31.3 degrees celsius. High amounts of fecal coliforms were detected and correlated with the SARS-CoV-2 shedding. We recommend to decentralized autonomous governments in developing countries such as Ecuador to implement corrective actions and establish medium-term mechanisms to minimize a potential contamination route.


2022 ◽  
Vol 7 (12) ◽  
pp. 121730-121743
Author(s):  
Eliomar Passos De Oliveira ◽  
Dimas José Lasmar ◽  
Jamal da Silva Chaar ◽  
Eline Lima Da Silva ◽  
Everaldo de Queiroz Lima ◽  
...  

Land ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 1401
Author(s):  
Ivan Laco

In this paper we are analyzing the potential of land cover features to provide three regulating ecosystem services (ESs), ES Local climate regulation, ES Water quality regulation and ES Biodiversity promotion, in two case study areas: Special nature reserve (SNR) Obedska bara (Serbia) and Protected landscape area (PLA) Dunajske luhy (Slovakia). Regulating ESs are not only important for proper functioning of ecosystems, but they are also crucial for the existence of human society. To assess the potential of land cover features to provide regulating ESs, we used biophysical methods. The maps of land cover potential to provide regulating ES are the result of the analyses. The results indicate that forests are the most important ecosystems that provide ES Local climate regulation and ES Water quality regulation. For ES Biodiversity promotion, the most important ecosystems were natural and seminatural meadows, wetlands, natural and seminatural rivers and water bodies as well as forests. Overall SNR Obedska bara has higher potential to provide all three regulating ESs than PLA Dunajske luhy. These findings point to the importance of natural areas in ensuring the provision of regulating ESs. Properly selected landscape management is the key for maintaining or improving the potential of land cover features to provide regulating ESs. The research can help local authorities in decision making and in creating conservation strategies for selected protected areas.


2021 ◽  
Vol 6 (2) ◽  
pp. 153
Author(s):  
La Baco Baco Sudia

Ecosystem services to regulate air quality, climate, water system and water purification are important ecosystem services for human life and other living things. The objective of the research was to analyze the distribution and value of ecosystem services index of air quality, climate, water system and water purification of Konawe Regency. This research was conducted through the study of ecoregion characteristics, covering landforms, natural vegetation types and land cover.  Data analysis includes the calculation of ecosystem services index and spatial distribution of ecosystem services index. The results showed that the dominant type of landform in Konawe Regency was the structural hills of metamorphic rock material with natural vegetation in the form of forests and the dominant land cover was primary dry land forests.The average value of the Ecosystem Services Index (ESI) of air quality regulation were 2.88 (medium), climate regulation and water system arrangements were 3.18 (medium) and 3.12 (medium) and water purification settings was 2.12 (low).  The average value of the ecosystem services index of the four types of regulatory services was 2.83 with a moderate category. The average ESI value of Sub District of Latoma, Asinua, Routa, Abuki and Meluhu were 3.92, 3.65, 3.62, 3.51 and 3.49 with high categories, respectively. The performance of environmental services of air quality regulation is dominated by a high category of 221,489.56 hectares or 41.99 percent, while climate regulation was dominated by a very high category of 243,516.50 hectares or 46.17 percent. The performance of ecosystem services of water system and water purification arrangements reached an area of 235,459.44 hectares or 44.64 percent and 32,723.16 hectares or 43.04 percent respectively.Keywords: ecoregion, ecosystem services index, regulating ecosystem services,spatial distributionJasa ekosistem pengaturan kualitas udara, iklim, tata air dan pemurnian air merupakan jasa ekosistem penting terhadap kehidupan manusia dan mahluk hidup lain. Penelitian ini bertujuan untuk menganalisis sebaran dan nilai indeks jasa ekosistem pengaturan kualitas udara, iklim, tata air dan pemurnian air Kabupaten Konawe.  Penelitian ini dilakukan melalui kajian karakteristik ekoregion, mencakup bentang lahan, tipe vegetasi alami dan tutupan lahan.  Analisis data meliputi perhitunganindeksjasaekosistem dan sebaranspasialindeksjasaekosistem. Hasil penelitian menunjukkan bahwa tipe bentang lahan yang dominan di Kabupaten Konawe adalah perbukitan structural lipatan bermaterial batuan metamorfik dengan vegetasi alami berupa hutanpamah (non dipterokarpa) dan tutupan lahan dominan adalah hutan lahan kering primer. Rata-rata nilai Indeks Jasa Ekosistem pengaturan kualitas udara adalah 2,88 (sedang), pengaturan iklim dan pengaturan tata air masing-masing sebesar 3,18 (sedang) dan 3,12 (sedang) dan pengaturan pemurnian air adalah 2,12 (rendah).  Nilai rata-rata indeks jasa ekosistem dari empat jenis jasa pengaturan tersebut adalah 2,83 dengan kategori sedang. Nilai IJE rata-rata Kecamatan Latoma yakni 3,92,  Kecamatan Asinua sebesar 3,65, KecamatanRouta sebesar 3,62, serta KecamatanAbuki dan KecamatanMeluhu masing-masing 3,51 dan 3,49 dengan kategori tinggi.  Kinerja jasa lingkungan pengaturan kualitas udara didominasi oleh kategori tinggi seluas 221.489,56 hektaratau 41,99%, sementara itu pengaturan iklim didominasi oleh kategori sangat tinggiseluas 243.516,50 hektaratau 46,17%.  Kinerja jasa ekosistem pengaturan tata air dan pengaturan pemurnian air mencapai luas masing-masing 235.459,44 hektaratau 44,64% dan 32.723,16 hektaratau 43,04%.Kata Kunci:ekoregion, jasa ekosistem pengaturan, indeks jasa ekosistem, sebaran spasial


Atmosphere ◽  
2021 ◽  
Vol 12 (12) ◽  
pp. 1659
Author(s):  
Daniel A. Potts ◽  
Emma J. S. Ferranti ◽  
Roger Timmis ◽  
Andrew S. Brown ◽  
Joshua D. Vande Hey

Atmospheric composition data from satellite platforms offers great potential for improving current understanding of anthropogenic emissions. Whilst this data has been used extensively in research, its use by governments to regulate and assess site-specific legislation compliance is minimal. Here, we outline the regulatory context for air quality regulation in the UK, and present a pilot study highlighting the potential of current instruments. The pilot study demonstrates the capabilities and limitations of the TROPOspheric Monitoring Instrument (TROPOMI) for detecting and isolating emissions of NO2 from regulated UK point sources. This study successfully isolated NO2 emissions from a cluster of three closely situated regulated sites in the north east of England, despite their proximity to large urban sources. This is the first time these sites have been resolved from satellite-based observations, and serves as a clear demonstration of the potential of current and future Earth observation data products for site-specific monitoring and investigation within the UK.


2021 ◽  
pp. 009539972110570
Author(s):  
Jolien van de Sande ◽  
Bert de Graaff ◽  
Diana Delnoij ◽  
Antoinette de Bont

In this paper, we explore how multiple accountability (MA) can enable an independent regulatory agency to deal with multiple conflicting public values in a complex and politically salient decision-making process. We examined the decision-making process of the Dutch National Health Care Institute on quality regulation of emergency care in the Netherlands. Using insights derived from ethnography, document analysis, and interviews, we show that MA resulted from strategic interactions between the Institute’s vertical and horizontal accountability forums. We argue that MA impeded efficiency but also enabled the Institute to deal with multiple conflicting public values.


2021 ◽  
Vol 2096 (1) ◽  
pp. 012058
Author(s):  
P Khavanov ◽  
A Chulenyov

Abstract Within the framework of this publication, thermal diagrams of autonomous heat supply systems using condensing heat generators are considered. The insignificant Russian experience of using small condensation boilers in residential construction shows that it is often used to simply replace traditional equipment with condensation technology in existing (or traditionally used) heat schemes, for example, with protection of the boiler from “cold return” by recirculating heat carrier or installing a hydraulic regulator. The consequence of this is almost completely lost the effect of the use of condensing boilers. At the same time, even using the heating temperature schedule of quality regulation 80-60°C and applying water heating to the DHW target up to 45°C you can achieve the effect of the boiler operation in the condensation mode, depending on the construction area, up to 75% of the total working time per year, generating about 70% of thermal energy in the annual cycle. However, it must be borne in mind that the efficiency of the condensing boiler is determined by the part of the latent heat of water vapor in the combustion products, which can be obtained with partial condensation. If this part is small, for example, when cooling the flue gases to 50-45°C (on gas), then the efficiency gain is only 1-3%.


2021 ◽  
Author(s):  
Peng Huang ◽  
Gaoyan Lyu ◽  
Yi Xu

Managing the quality of complementary applications is vital to the success of a two-sided platform. While prior research has focused solely on restricting platform access based on a quality threshold, we compare three quality regulation strategies: (1) the platform excludes access to low-quality complementors, (2) it provides a fixed amount of subsidy to high-quality complementors, and (3) it develops its own high-quality applications in addition to those from third-party complementors. Our analyses reveal that the widely adopted exclusion strategy is a special case of the subsidization strategy, and it does not always benefit the platform. In contrast, both subsidization and first-party applications strategies render the platform owner better off, with higher profits, higher average quality, and a larger consumer network, but only subsidization always improves social welfare. In addition, the trade-off between subsidization and first-party applications strategies depends on the development cost of first-party applications and the fraction of high-quality complementors, but the relationship is not monotonic. Our results demonstrate that the platform does not have to sacrifice application quantity for higher application quality. With the right choices, it can profitably improve both measures simultaneously. This research provides concrete guidelines to help platform managers make decisions about regulating the quality of complementary applications. This paper was accepted by Anandhi Bharadwaj, information systems.


Water ◽  
2021 ◽  
Vol 13 (21) ◽  
pp. 2980
Author(s):  
Roxelane Cakir ◽  
Mélanie Raimonet ◽  
Sabine Sauvage ◽  
Romain Walcker ◽  
Magali Gerino ◽  
...  

Estimation at large scale of the water quality regulation services is still lacking. It is essential to develop methodological approaches to quantify nutrient-related functions’ distribution. The present study aims to quantify nitrate-related ecological functions through nitrate net balance (NNB), nitrate removal (NR), and nitrate production (NP). This study explores the spatiotemporal dynamics of these indicators in South-Western Europe (SUDOE, 216 subsystems over 81 basins) at a monthly scale from 2000 to 2010. We use the Soil and Water Assessment Tool model to simulate nutrient transfer at the subsystem scale (~3000 km2) and calculate ecological functions. The modeled NNB is validated at the subsystem scale by comparing with NNB predicted at the water body scale (~60 km2) over the Garonne watershed (France). Hot spots of NR are located in the south of SUDOE, characterized by a warmer and dryer climate, whereas NP hot spots are located in the most anthropized streams. The mean NNB (the balance between NP and NR) at the subsystem scale for the SUDOE territory reaches −3.5 and −2.8 gN m−2 day−1 during the most active seasons. The results highlight drivers influencing NR such as streamflow, river slope, and hydrological alteration. Getting an overview of where and when these nitrate regulation functions (NP and NR) occur is essential for socio-ecosystem sustainability and this study highlights its sensitivity to anthropogenic stressors.


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