scholarly journals Modelling the Quality of Bathing Waters in the Adriatic Sea

Water ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1525
Author(s):  
Christian Ferrarin ◽  
Pierluigi Penna ◽  
Antonella Penna ◽  
Vedrana Spada ◽  
Fabio Ricci ◽  
...  
Keyword(s):  
Adriatic Sea ◽  
Management Tool ◽  
Negative Consequences ◽  
Sea Temperature ◽  
Bathing Water Directive ◽  
Bathing Waters ◽  
Diffusion Dynamics ◽  
Study Sites

The aim of this study is to develop a relocatable modelling system able to describe the microbial contamination that affects the quality of coastal bathing waters. Pollution events are mainly triggered by urban sewer outflows during massive rainy events, with relevant negative consequences on the marine environment and tourism and related activities of coastal towns. A finite element hydrodynamic model was applied to five study areas in the Adriatic Sea, which differ for urban, oceanographic and morphological conditions. With the help of transport-diffusion and microbial decay modules, the distribution of Escherichia coli was investigated during significant events. The numerical investigation was supported by detailed in situ observational datasets. The model results were evaluated against water level, sea temperature, salinity and E. coli concentrations acquired in situ, demonstrating the capacity of the modelling suite in simulating the circulation in the coastal areas of the Adriatic Sea, as well as several main transport and diffusion dynamics, such as riverine and polluted waters dispersion. Moreover, the results of the simulations were used to perform a comparative analysis among the different study sites, demonstrating that dilution and mixing, mostly induced by the tidal action, had a stronger effect on bacteria reduction with respect to microbial decay. Stratification and estuarine dynamics also play an important role in governing microbial concentration. The modelling suite can be used as a beach management tool for improving protection of public health, as required by the EU Bathing Water Directive.

Bathymetry estimation from altimeter - derived gravity data in the Adriatic Sea

2021 ◽  
Author(s):  
Ljerka Vrdoljak ◽  
Marijan Grgić ◽  
Tomislav Bašić
Keyword(s):  
Adriatic Sea ◽  
Gravity Data ◽  
Gravity Anomalies ◽  
Shuttle Radar Topography Mission ◽  
Measured Data ◽  
Eastern Coast ◽  
Bathymetric Data ◽  
Almost All

<p>Bathymetric models representing the topography of the seafloor are an important parameter in almost all maritime related research. Traditional bathymetric shipborne or airborne surveys are cost and/or time consuming, and access to the measured data is mostly limited or expensive. Alternative bathymetric data sources for marine researchers are publicly available bathymetric models whose quality is often unknown and/or uneven. This research presents the study on the bathymetric prediction for the Adriatic Sea from altimetry-derived gravity anomalies and in-situ soundings using the gravity - geologic method (GGM). Bathymetric soundings used to determine the density contrast between seawater and bedrock were derived from nautical charts, EMODnet (European Marine Observation and Data Network) bathymetric grid, and GEBCO (General Bathymetric Chart of the Oceans) One Minute grid. More than 3000 chart soundings distributed across the Adriatic Sea were used to estimate the quality of the predicted bathymetric model as well as the quality of the latest versions of publicly available bathymetric models: DTU10Bat (Technical University of Denmark), GEBCO 2020, EMODnet 2018, ETOPO1, Smith and Sandwell v.19.1, and SRTM (Shuttle Radar Topography Mission) 15+ V.2.1. The results show that the computed model represents an update to bathymetric data in the Adriatic Sea, especially along its eastern coast.</p>

scholarly journals Practical Aspects of Quality Management in the Construction Industry

2019 ◽  
Vol 2019 (3) ◽  
pp. 310-317
Author(s):  
Anzhelika Emel'yanovich ◽  
Sergey Koval ◽  
Alexander Kakorin
Keyword(s):  
Reinforced Concrete ◽  
Quality Management ◽  
Product Quality ◽  
Construction Industry ◽  
Six Sigma ◽  
Iso 9001 ◽  
Management Tool ◽  
Internal Quality ◽  
Negative Consequences

The authors consider the internal and external reserves of improving the quality of products at the enterprises that produce reinforced concrete. The research objective was to study and substantiate the external and internal factors, thus improving the effectiveness of quality management. The paper focuses on the use of such tool of sustainable development as "Six Sigma", which is considered as an important factor in product quality management. The paper also features the process of certification as an external tool that can improve quality management in the construction industry. The authors justified the necessity of mandatory certification of construction products when bidding for a tender. The paper also reviews the experience of sustainable production at reinforced concrete plants. The problems of product quality in the industry are of strategic nature and can cause economic, environmental, and other negative consequences. Quality management should become compulsory in the industry since its products are designed exclusively for the domestic market. As a result, its certification according to State Standards ISO 9001 or GOST R ISO 9001 is absolutely voluntary and performs only image-making functions. As far as tenders for state orders are concerned, mandatory certification may solve the existing problems with the quality of construction work. As internal quality management tool, the concept of "Six Sigma" can be useful for concrete works.

scholarly journals ANALISIS LOKASI BUDIDAYA TERHADAP KANDUNGAN KARAGENAN RUMPUT LAUT (KAPPAPHICUS ALVAREZII) DI PERAIRAN TELUK KOSIWO YAPEN – PAPUA

2020 ◽  
Vol 3 (1) ◽  
pp. 11-14
Author(s):  
Frice Padawan ◽  
Erni Indrawati ◽  
Sri Mulyani
Keyword(s):  
Environmental Factors ◽  
Water Temperature ◽  
Environmental Parameters ◽  
Qualitative Approaches ◽  
Study Sites ◽  
The Relationship ◽  
Quantitative Approaches

Penelitian ini bertujuan untuk menganalisis hubungan lokasi budidaya rumput laut Kappaphicus alvarezii dengan kualitas Karagenan rumput laut di perairan Kosiwo Kabupaten Kepulauan Yapen - Papua. Penelitian ini bersifat eksperimental menggunakan pendekatan kuantitatif dan pendekatan kualitatif. Parameter lingkungan dilakukan secara langsung (in-situ) sedangkan menganalisis kandungan karagenan dilakukan di Laboratorium Nutrisi. Data yang diperoleh dianalisis menggunakan person correlasi untuk menganalisis korelasi antara Parameter lingkungan terhadap kandungan karagenan. Hasil penelitian di perairan Kosiwo Kabupaten Kepulauan Yapen-Papua Kualitas  kandungan karagenan rumput laut yaitu Nilai tertinggi di teluk mioka sebesar 11,87% pada awal dan 29,67% pada akhir penelitian, selanjutnya di kamanumpang sebesar 11,65% pada awal dan  26,77% pada akhir sedangkan yang terendah di salawandori sebesar 11,19 pada awal dan 22,77 pada akhir penelitian. korelasi antara faktor lingkungan terhadap kualitas karagenan rumput laut Kappaphicus alvarezii menunjukkan bahwa di Sarawandori dan di Kamanumpang menunjukkan bahwa faktor lingkungan tidak berkolerasi terhadap kandungan karagenan sementara pada Miyokamenunjukkan bahwa suhu perairan berpengaruh terhadap kandungan keragenan terdapat pada. Korelasi antara pertumbuhan dan rendeman karagenan rumput laut K. alvarezii pada tiga lokasi penelitian didpatkan nilai korelasi 0,019 – 0,504. Kandungan rendeman karagenan rumput laut yang terbaik di Teluk Mioka kemudian Kamanumpang dan Terendah di Sarawandori. This study aims to analyze the relationship ofseaweed cultivation location with seaweed Kappaphicus alvareziicarrageenan quality in Kosiwo waters in Yapen Islands Regency - Papua. This research is experimental using quantitative approaches and qualitative approaches. Environmental parameters were carried out directly (in-situ) while analyzing carrageenan content was carried out at the Nutrition Laboratory. The data obtained were analyzed using correlated person to analyze the correlation between environmental parameters of carrageenan content. The results of the study in Kosiwo waters in Yapen-Papua Islands Regency The quality of seaweed carrageenan content is the highest value at bay mioka at 11.87% at the beginning and 29.67% at the end of the study, then at the passenger level at 11.65% at the beginning and 26, 77% at the end while the lowest in Salawandori was 11.19 at the beginning and 22.77 at the end of the study. Correlation between environmental factors on the quality of seaweed carrageenan Kappaphicus alvarezii showed that in Sarawandori and in Kamanumpang showed that environmental factors were not correlated with the carrageenan content while in Miyokamen showed that the water temperature had an effect on the content of the agent found in Correlation between growth and rendering ofseaweed carrageenan K. alvarezii in the three study sites was adjusted by a correlation value of 0.019 - 0.504. The best seaweed rendering content in Mioka Bay then Kamanumpang and Lowest in Sarawandori

Pengaruh Jenis Co-Solvent terhadap Rendemen dan Mutu Biodiesel secara Transesterifikasi In Situ Menggunakan Radiasi Gelombang Mikro

2016 ◽  
Vol 10 (2) ◽  
pp. 119-126
Author(s):  
Mahlinda Mahlinda ◽  
Fitriana Djafar
Keyword(s):  
Catalyst Concentration ◽  
Maximum Yield ◽  
Acid Value ◽  
Experimental Result ◽  
In Situ Transesterification ◽  
Yield And Quality ◽  
Solvent Type ◽  
Biodiesel Quality

The main purpose of this research was to observer effect co-solvent type (n-Hexane, chloroform and without co-solvent)  toward yield and quality of biodiesel via in situ transesterification process using microwave irradiation. The process was studied at microwave power 450 watt, reaction time 4 minutes, methanol to seed ratio 25:1 and catalyst concentration 5%. The physicochemical parameters of the biodiesel produced such as viscosity, density and acid value were analysed and compared with the SNI 7182-2012 standard. The experimental result showed the maximum yield biodiesel 78,32% obtained by using co-solvent chloroform.Test result of physicochemical properties (viscosity, density and acid value) of biodiesel products using co solvent n-Hexane, chloroform and without co solvent showed that these products conform to the SNI 7182-2012 standars. The type of co-solvent only affectedon biodiesel yield dan not affected on biodiesel quality (viscosity, density and acid value).  ABSTRAKTujuan penelitian ini adalah untuk mempelajari pengaruh jenis co-solvent (n-Hexane, chloroform dan tanpa co-solvent) terhadap rendemen dan mutu biodiesel secara trasesterifikasi in situ menggunakan radiasi gelombang mikro. Proses dilakukan pada daya gelombang mikro 450 watt, waktu reaksi 4 menit, perbandingan berat metanol terhadap bahan baku 25:1 dan jumlah katalis 5%. Parameter fisiko kimia dari produk biodiesel seperti viskositas, densitas dan angka asam di analisa dan dibandingkan dengan standar SNI 7182-2012 tentang biodiesel. Hasil penelitian menunjukkan rendemen maksimum biodiesel sebesar 78,32% diperoleh dengan menggunakan co-solvent chloroform. Hasil pengujian  karakteristik fisiko kimia (viskositas, densitas dan angka asam) dari produk biodiesel menggunakan co-solvent n-Hexane, chloroform dan tanpa co-solvent menunjukkan bahwa semua parameter ini masih memenuhi standar SNI 1782-2012 tentang biodiesel. Jenis co-solvent hanya berpengaruh pada rendemen biodiesel dan tidak berpengaruh terhadap mutu biodiesel (viskositas, densitas dan bilangan asam).Kata kunci: co-solvent, in situ transesterifikasi, microwave, rendemen, mutu   

Estudio del proceso de lavado de contenedores para eliminar tiempos y movimientos innecesarios, caso: Wash Containers S.A de C.V.

2020 ◽  
pp. 25-36
Author(s):  
Juan Alfredo Lino-Gamiño ◽  
Carlos Méndez-González ◽  
Eduardo José Salazar-Araujo ◽  
Pablo Adrián Magaña-Sánchez
Keyword(s):  
Business Process ◽  
Value Chain ◽  
Process Management ◽  
Core Business ◽  
The Core ◽  
Washing Process ◽  
Overall Performance ◽  
The Times

In the value chain it is important to keep in mind the core business of the company, since it depends largely on the competitiveness of the company and its overall performance, bearing in mind that all business indicators depend on it. In this work we will study the washing process within the company WASH CONTAINERS SA DE CV, to improve the washing processes and in this way reduce times and movements in the process leading the company to reduce costs considerably within the operations company daily, having a more competitive operation and with greater profit margin in its business process. Goals: It Improve the logistics of the movement of containers for washing and with it the core business of the company. Methodology: The action research will be applied applying Business Process Management for the improvement of processes in situ, it will be developed in a certain period of time and with that it will establish an improvement projection. Contribution: The improvement of the times for the disposal of the containers and their subsequent use, allows a better competitiveness and with it the income of the company, on the other hand, the transport companies improve in performance in quantity, quality of disposition and with it their income.

Assessing the Quality of Management of Transformation Processes in Economic Systems

2020 ◽  
Vol 26 (9) ◽  
pp. 952-956
Author(s):  
M. V. Malyshkina ◽  
M. V. Miroslavskaya
Keyword(s):  
Systems Approach ◽  
Mutual Influence ◽  
Organizational Transformation ◽  
Quality Criterion ◽  
Economic Transformation ◽  
Economic Systems ◽  
Negative Consequences ◽  
Management Actions ◽  
Transformation Processes

Aim. The presented study aims to develop the methodology for assessing the quality of management of organizational transformation processes. Tasks. To achieve the set aim, the authors solve the following problems: determine the essence and content of socio-economic transformation, formulate quality assurance principles for the management of transformation processes, draw attention to the problem of selecting a unified quality criterion for the management of organizational transformation processes. Methods. This study uses general scientific methods of cognition, including analysis and synthesis. It also applies a systems approach to identify the major problems of assessing the quality of management of transformation processes, including the problem of selecting a unified quality criterion for the management of transformation processes and formulating the principles of ensuring the quality of management of transformation processes. Results. The global problem of managing transformation processes in the economic system consists in the complexity of the managed processes, which increases due to the multidimensionality, mutual influence, and the resulting uncertainty of interactions between the elements of the system. It is concluded that the methodology for assessing the quality of management of transformation processes is based on the principle of integrating separate measures to improve the quality of management of system elements into a single system of management actions and the principle of ensuring that management actions are primarily aimed at preventing possible negative consequences of the transformation of economic systems, i.e. reducing the potential impact of unfavorable events and their consequences. To assess the effectiveness of targeted management actions and productive actions aimed at organizing, controlling, and guiding the transformation process, the authors actualize the problem of selecting an adequate quality criterion for the management of transformation processes in economic systems and put forward a hypothesis about a possible unified criterion of management quality. Conclusions. The principle of integrating separate measures to improve the quality of management of system elements and the principle of ensuring that management actions are aimed at preventing possible negative consequences lie at the core of the methodology for assessing the quality of management of transformation processes in economic systems. The quality assessment methodology should be developed in the direction of finding a unified quality criterion for managing transformation processes in economic systems.

Effects and Risks of Distance Learning in Higher Education

2020 ◽  
pp. 61-73
Author(s):  
Yu. M. Tsygalov
Keyword(s):  
Higher Education ◽  
Distance Learning ◽  
Online Education ◽  
New Technology ◽  
Negative Consequences ◽  
Higher Education System ◽  
First Results ◽  
Spread Of Infection ◽  
The Cost

The forced work of Russian universities remotely in the context of the pandemic (COVID-19) has generated a lot of discussion about the benefits of the new form of education. The first results were summed up and reports were presented, the materials of which showed that the main goal of online education — the prevention of the spread of infection, - has been achieved. Against this background, proposals and publications have appeared substantiating the effectiveness of the massive introduction of distance learning in Russia, including in higher education. However, the assessment of such training by the population and students in publications and in social networks was predominantly negative and showed that the number of emerging problems exceeds the possible benefits of the new educational technology. Based on the analysis of the materials of publications and personal experience of teaching online, the potential benefits and problems of distance learning in higher education in Russia are considered. It is proposed to consider the effects separately for the suppliers of new technology (government, universities) and consumers (students, teachers, society). It is substantiated that the massive introduction of online education allows not only to reduce the negative consequences of epidemics, but also to reduce budgetary funding for universities, optimize the age composition of teachers, and reduce the cost of maintaining educational buildings. However, there will be a leveling / averaging of the quality of education, and responsibility for the quality of training will shift from the state/universities to students. The critical shortcomings of online education are the low degree of readiness of the digital infrastructure, the lack of a mechanism for identifying and monitoring the work of students, information security problems, and the lack of trust in such training of the population. The massive use of online education creates a number of risks for the country, the most critical of which is the destruction of the higher education system and a drop in the effectiveness of personnel training. The consequences of this risk realization are not compensated by any possible budget savings.

Automated Insulin Delivery Systems: Today, Tomorrow and User Requirements

2021 ◽  
pp. 193229682110299
Author(s):  
Marga Giménez ◽  
Ignacio Conget ◽  
Nick Oliver
Keyword(s):  
Lived Experience ◽  
Diabetes Management ◽  
Real Life ◽  
Insulin Delivery ◽  
Qualitative Assessment ◽  
Management Tool ◽  
Diabetes Distress ◽  
Glycemic Targets

Automated insulin delivery (AID) is the most recent advance in type 1 diabetes (T1D) management. It has the potential to achieve glycemic targets without disabling hypoglycemia, to improve quality of life and reduce diabetes distress and burden associated with self-management. Several AID systems are currently licensed for use by people with T1D in Europe, United States, and the rest of the world. Despite AID becoming a reality in routine clinical practice over the last few years, the commercially hybrid AID and other systems, are still far from a fully optimized automated diabetes management tool. Implementation of AID systems requires education and support of healthcare professionals taking care of people with T1D, as well as users and their families. There is much to do to increase usability, portability, convenience and to reduce the burden associated with the use of the systems. Co-design, involvement of people with lived experience of T1D and robust qualitative assessment is critical to improving the real-world use of AID systems, especially for those who may have greater need. In addition to this, information regarding the psychosocial impact of the use of AID systems in real life is needed. The first commercially available AID systems are not the end of the development journey but are the first step in learning how to optimally automate insulin delivery in a way that is equitably accessible and effective for people living with T1D.

scholarly journals Chlorosulfuric acid-assisted production of functional 2D materials

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Mohsen Moazzami Gudarzi ◽  
Maryana Asaad ◽  
Boyang Mao ◽  
Gergo Pinter ◽  
Jianqiang Guo ◽  
...  
Keyword(s):  
Hexagonal Boron Nitride ◽  
2D Materials ◽  
Real Life ◽  
Large Area ◽  
Polar Solvents ◽  
Aspect Ratios ◽  
Two Dimensional Materials ◽  
Liquid Phase Exfoliation

AbstractThe use of two-dimensional materials in bulk functional applications requires the ability to fabricate defect-free 2D sheets with large aspect ratios. Despite huge research efforts, current bulk exfoliation methods require a compromise between the quality of the final flakes and their lateral size, restricting the effectiveness of the product. In this work, we describe an intercalation-assisted exfoliation route, which allows the production of high-quality graphene, hexagonal boron nitride, and molybdenum disulfide 2D sheets with average aspect ratios 30 times larger than that obtained via conventional liquid-phase exfoliation. The combination of chlorosulfuric acid intercalation with in situ pyrene sulfonate functionalisation produces a suspension of thin large-area flakes, which are stable in various polar solvents. The described method is simple and requires no special laboratory conditions. We demonstrate that these suspensions can be used for fabrication of laminates and coatings with electrical properties suitable for a number of real-life applications.

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