scholarly journals Laboratory investigations of diclofenac migration in saturated porous media – a case study

Geologos ◽  
2019 ◽  
Vol 25 (3) ◽  
pp. 213-223
Author(s):  
Monika Okońska ◽  
Marek Marciniak ◽  
Joanna Zembrzuska ◽  
Mariusz Kaczmarek

Abstract At present, concentrations of pharmaceuticals in surface and ground waters are low; however, even low concentrations of certain substances may prove very harmful. One of such pharmaceutical drugs is diclofenac, a popular non-steroidal anti-inflammatory drug (NSAID). For this reason, it is important to determine its mobility in groundwater and to estimate parameters of migration. Authors conducted column tests for two porous media: an artificial one, consisting of glass granules, and a natural one, i.e., sandur sand obtained from a site north of the city of Poznań (Poland). During the test, impulse breakthrough curves of chloride ions and diclofenac were recorded. The results were used to identify a specific sorption model and to determine values of migration parameters. Solutions of the inverse problem using optimisation methods and of equations of mathematical migration models were carried out in a MATLAB environment. Based on test results, the mobility of diclofenac is shown to be very high and comparable to that of chloride ions. The tests also revealed a slight and irreversible sorption of diclofenac on grains of both porous media.

2018 ◽  
Author(s):  
Syamsuddin

Earthquakes often cause fatalities to human being. Unfortunately, the event of earthquakes cannot be forecasted. But, the hazard risk due to these earthquakes could be reduced if the geological, seismic and physical surface conditions are known. This reduction plays an important role in disaster mitigation. This paper discusses the development of a method for hazard risk analysis due to earthquakes. The development is based on the input parameters of the hazard and vulnerability components of a site being investigated. Each parameter is then rated, so the total rating of hazard and vulnerability input parameters is obtained. The comparison between the applied rating and the total rating of hazard and vulnerability input parameters results in an index of each input parameter, consecutively. Thus, the multiplication of indexes, (hazard and vulnerability), results in a hazard risk index. Based on the proposed hazard index, a case study in the city of Mataram of Lombok Island has been conducted. The result shows that the city of Mataram has a medium hazard risk index. This means that if an earthquake occurs in the city of Mataram, a medium scale of fatalities may be experienced by the city. However, this index should be considered as an early warning system in disaster mitigation. So, the real condition of the city should be evaluated in order to increase the degree of preparedness due to the event of earthquakes that could occur at any time.


2021 ◽  
Author(s):  
Natalie Elizabeth Hickey

Convenience centres are a prominent retail form in the suburban communities of Toronto. Built to satisfy the goods and service needs of the people who inhabit the suburbs, convenience centres were first built in the post-war era, and consist of one-story retail units connected by a shared canopy. They have one or more rows of parking adjacent to the street and are designed to create a convenient experience for drivers. Convenience centres in Toronto typically occupy real estate along the Avenues and major arterial roads: areas designated in the City of Toronto Official plan to support future intensification, density, and housing. Therefore, the research in this project describes a set of recommendations in the form of a framework for redevelopment of convenience centres. It also outlines a case study for a site in Scarborough, Ontario, in which this framework was applied. Key words: retail; strip plaza; convenience centre; suburbs; redevelopment; Toronto;


2019 ◽  
Vol 68 (8-9) ◽  
pp. 609-628
Author(s):  
Peter Bescherer

Zusammenfassung Die reaktionären Bewegungen der Vergangenheit verteufelten das vermeintlich sündhafte, wurzellose und degenerierte Leben in der Großstadt und glorifizierten die Genügsamkeit und Fruchtbarkeit des ‚Bauernstandes‘. Zwar waren städtische Räume immer auch der Ort rechter Hegemoniebestrebungen, die von der Monumentalarchitektur der Nazis bis hin zu den ‚national befreiten Zonen‘ der NPD reichten. Die Stadt war aber in der Regel nicht ihr Thema. Mit der Krise der liberalen Demokratie droht sich das Politikfeld Stadt für die Rechte zu öffnen. Der Aufsatz illustriert anhand der Wohnungsfrage und der Sicherheitspolitik, wie Stadtentwicklung eine populistische Lücke hinterlässt, in die rechte Parteien und Bewegungen hineindrängen (können). Anhand eines Falls aus der empirischen Forschung wird darüber hinaus diskutiert, wie sich politische Nachfrage und rechtspopulistisches Angebot zueinander verhalten. Abstract: From Anti-Urbanism to Urban Populism? The Upcoming Danger of an Urban-Based Radical Right Reactionary movements of the past demonized city life for nurturing dissolute, rootless and degenerated habits. On the contrary, they praised the frugality and fertility of rural people. The city has always been a site of hegemonic politics by the radical right, ranging from National-Socialist architecture to no-go areas established by neo-Nazis in East German towns after the reunification. It has, however, usually not been a matter of rightist politics. The crisis of liberal democracy, that came about the last years, runs the risk of providing the radical right with access to urban development. By analyzing issues on the housing market and in urban security politics the paper points out a ‘populist gap’ in urban development that could be filled by the right. Furthermore, an empirical case study reveals tensions between the demand site and supply side of urban populism.


2020 ◽  
Vol 4 (1) ◽  
pp. 67-74
Author(s):  
Muhammad Rafi Iqbal (Universitas Widyatama) ◽  
Ismail Hasan (Universitas Widyatama) ◽  
Aldri Satria Gusmon (Universitas Widyatama)

Abstract To meet the rapid demand for pharmaceutical drugs, a new warehouse is needed to distribute to various cities in West Java. This research at PT. Kimia Farma has the aim of determining the location of a new warehouse that is efficient and effective in minimizing the transportation costs of PT. Kimia Farma Plant Bandung to the location of distribution in West Java. The current conditions with warehouses in the city of Bandung prove that transportation costs at the company are very large, due to the distance from the old warehouse to the distributors. In this study, the Center of Gravity method is used to determine the location of the warehouse. The design of this research is a case study in the area of West Java with data collection methods such as interviews and using CorelDraw software to create a Cartesian diagram. The calculation results obtained using the center of gravity method for the location of the new warehouse located in Subang with coordinate points (18.36). With the new warehouse location, it can minimize transportation costs as much as Rp. 481,192 with a percentage reduction of 6.76% and the distance from the initial warehouse in Bandung to Subang and then to all distribution destinations, which is 43 km closer after the addition of new warehouses. and has a decreased percentage of 6.91%. Abstrak Untuk memenuhi permintaan obat-obatan farmasi yang cepat, maka dibutuhkan letak gudang baru untuk mendistribusikan ke berbagai kota di Jawa Barat. Penelitian pada PT.Kimia Farma ini memiliki tujuan menentukan letak gudang baru yang efisien serta efektif dalam meminimkan biaya transportasi PT.Kimia Farma Plant Bandung ke letak distribusi di Jawa Barat. Kondisi saat ini dengan gudang di Kota Bandung membuktikan pengeluaran biaya transportasi pada perusahaan sangatlah besar, dikarenakan adanya jarak tempuh yang jauh dari gudang lama menuju para distributor. Dalam penelitian, digunakan metode center of gravity dalam mentukan letak gudang. Desain penelitian ini berupa studi kasus wilayah jawa barat dengan metode pengumpulan data berupa wawancara serta menggunakan software CorelDraw untuk membuat diagram kartesius. Hasil perhitungan yang diperoleh menggunakan metode center of gravity untuk letak gudang baru berletak di Subang dengan titik koordinat (18,36). Dengan adanya letak gudang yang baru maka, dapat meminimkan biaya transportasi sebesar Rp.481.192 dengan persentase penurunan sebesar 6,76% dan jarak tempuh dari gudang awal di Bandung menuju Subang lalu menuju semua tujuan distribusinya yakni sebesar 43 km lebih dekat setelah adanya penambahan gudang baru dan memiliki presentase penurunan sebesar 6,91%.


2021 ◽  
Author(s):  
Natalie Elizabeth Hickey

Convenience centres are a prominent retail form in the suburban communities of Toronto. Built to satisfy the goods and service needs of the people who inhabit the suburbs, convenience centres were first built in the post-war era, and consist of one-story retail units connected by a shared canopy. They have one or more rows of parking adjacent to the street and are designed to create a convenient experience for drivers. Convenience centres in Toronto typically occupy real estate along the Avenues and major arterial roads: areas designated in the City of Toronto Official plan to support future intensification, density, and housing. Therefore, the research in this project describes a set of recommendations in the form of a framework for redevelopment of convenience centres. It also outlines a case study for a site in Scarborough, Ontario, in which this framework was applied. Key words: retail; strip plaza; convenience centre; suburbs; redevelopment; Toronto;


2016 ◽  
Vol 29 ◽  
pp. 423-437
Author(s):  
Nicolas Monteix

“Questi giornali di scavo di Ercolano sono una miseria di forma e di sostanza”“The only source of information for most of the finds of the site [Pompeii] remains the pages of the Giornali degli Scavi”With the multiplication of excavations, archaeological research (and even rescue archaeology) increasingly faces sites previously explored and thereby has to deal with documentation made with different methods and of different scopes than those of today. Beyond the historiographical issues and differences in ways of describing the past as viewed from the present, such an archival documentation is generally fragmentary, often scattered between various institutions or in private archives. The aim of this paper is to contribute to a debate on an important issue: how might we best make use of previous material, from archival documents to publications?Herculaneum can exemplify the main processes one might face while studying a site excavated in the past. Initially explored through tunnels, it was excavated in open-area excavations in four periods (1828-55; 1869-75; 1927-61; 1996-98). Most of the city as we know it was uncovered by A. Maiuri (1886-1963) while he was Soprintendente and director of the Museum of Naples (1924-61). He managed to pass himself off as the only excavator of Herculaneum, and such a view was consolidated by the (incomplete) publication of his excavations in 1958. Up until the late 1990s, anything written about Herculaneum relied on his synthesis, with only a few re-interpretations based on observations made on a site that had been restored and presented by him. S. Mols was the first to use other sources to understand better the context of the wooden furniture discovered throughout the town, namely the daybooks (Giornale degli scavi di Ercolano [henceforth GSE]) composed during the excavation. Since then, slowly but surely, many of those involved in the study of Herculaneum started using those diaries, hoping to have a more complete and less subjective perception of the excavation — at least, one less influenced by Maiuri.


2021 ◽  
Author(s):  
Sunjay Mathuria

While the City of Toronto recognizes the importance of retaining employment lands, it is becoming evident that long-term visions are needed to fully conceptualize the possibilities and realities of these aging, eclectic manufacturing hubs found in the inner suburbs. The purpose of this research is to identify the conditions, constraints and opportunities of the Rexdale Employment Area and develop the groundwork for a Secondary Plan. The first phase of this research project involves conducting a literature review of suburban industry and collecting historical information on Rexdale's employment lands. This is followed by a provincial and municipal policy review for employment lands and how these impact the longevity of the Rexdale Employment Area. A case study analysis of industrial districts in Chicago and Vancouver helps identify possible best practices to implement in Rexdale. Finally, interviews with planners, local employees, industrial associations and com munity organizations were used to provide perspectives absent from existing literature. A site study of the vacant land at 555 Rexdale Boulevard is used as a way to conceptualize the conditions and opportunities of the Rexdale Employment Area.


2021 ◽  
Author(s):  
Sunjay Mathuria

While the City of Toronto recognizes the importance of retaining employment lands, it is becoming evident that long-term visions are needed to fully conceptualize the possibilities and realities of these aging, eclectic manufacturing hubs found in the inner suburbs. The purpose of this research is to identify the conditions, constraints and opportunities of the Rexdale Employment Area and develop the groundwork for a Secondary Plan. The first phase of this research project involves conducting a literature review of suburban industry and collecting historical information on Rexdale's employment lands. This is followed by a provincial and municipal policy review for employment lands and how these impact the longevity of the Rexdale Employment Area. A case study analysis of industrial districts in Chicago and Vancouver helps identify possible best practices to implement in Rexdale. Finally, interviews with planners, local employees, industrial associations and com munity organizations were used to provide perspectives absent from existing literature. A site study of the vacant land at 555 Rexdale Boulevard is used as a way to conceptualize the conditions and opportunities of the Rexdale Employment Area.


Author(s):  
Eduardo De Sá Bueno Nóbrega ◽  
Ruth Da Silva Brum ◽  
Jairo Valões de Alencar Ramalho ◽  
Régis Sperotto Quadros

Earth-air heat exchangers (EAHE) represent a promising option to reduce theheating/cooling load of buildings. Unlike traditional air conditioning systems, the EAHE employ a renewable source of energy and they can work using low electric power. Basically, EAHE employ underground ducts where the air is blown to exchange heat with the ground. Since the superficial layers of the Earth are warmer than outside air in winter and cooler than it in summer, the soil canbe used as a heat source or sink. Therefore, the air leaves the ducts at milder temperatures. Recent research has shown that the Brazilian south region, where prevails a subtropical climate, has a high potential for the use of EAHE. However, such references are still very limited. Hence, this work aims to analyze the thermal performance of EAHE considering the city of Pelotas, located in the south Brazilian state of Rio Grande do Sul. As a case study, we used in situ data, covering thesoil geotechnical profiles from a site in the city, which were obtained by a standard penetration test (SPT). To make the computer simulations, we used an analytical model, which was previously tested and validated. The results point out good prospects for the installation of these devices in the city of Pelotas, taking advantage of its geological potential


2021 ◽  
pp. 1-41
Author(s):  
Lisa Earl Castillo

Abstract The Afro-Brazilian religion of Candomblé arose during the Atlantic slave trade and has unmistakable Yorùbá influences. In the city of Salvador, the term nação ketu [Ketu nation] is used among the oldest temples in describing Yorùbá heritage. This has led some scholars to assume that the founders came from the Yorùbá kingdom by that name. This paper critically examines the idea of Kétu origins, taking as a case study the temple Ilê Axé Iyá Nassô Oká, a national historic heritage site in Brazil that is recognized by UNESCO as a site of diasporic memory. The paper shows that the first generations of leadership were dominated by people from Ọ̀yọ́ and that the term ketu emerged not as an allusion to ethnic origins but perhaps as a metaphor for a heterogeneous cultural context in which Yorùbá speakers from disparate regions lived in close coexistence.


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