Monitoring the Inorganic and Organic Acids in the Atmosphere of the Urban Area of the City of Salvador, Brazil

The purpose of our work is to assess the health state of woody plants growing in different habitats of the city of Aktobe. We have studied the health state of arboreal and shrubby plants growing in various urban habitats; the survey was conducted during 2016-2017 by route-visual method. We performed the analysis of species diversity, abundance and density in urban area. The assessment of health state of the trees was made according to V.A. Alekseev. From your data and literature review we established that such species as Ulmus pinnato-ramosa, Acer negundo, Populus tremula, Populus nigra, and Syringa vulgaris have strong winter resistnce in the territory of Aktobe; we registered that only their apex buds and emds of the shoots were frozen in severe winters. The medium-resistant speices include Ulmus laevis and Acer platonoides. They are less plastic and suffer from late spring and early autumn frosts. The Amorpha fruticosa, Vitis vinifera, and Parthenocissus guinguefolia could be considered as the non-resistant species, since they usually freeze up to the snow cover line. The analysis of the vital state made it possible to assess the resistance to urban conditions of the majority of trees and shrubs registered in urban habitats of Aktobe. According to the preliminary data, the origin of the plant and its winter resistance are of main importance when introducing new species to urban area.

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Development of the city-scale chemistry transport model CityChem-EPISODE and its application to the city of Hamburg

10.5194/gmd-2018-8 ◽

2018 ◽

Cited By ~ 2

Author(s):

Matthias Karl

Keyword(s):

Air Quality ◽

Urban Area ◽

Transport Model ◽

Dispersion Model ◽

Temporal Correlation ◽

Urban Atmosphere ◽

Aerosol Formation ◽

Urban Background ◽

New Model ◽

The City

Abstract. This paper describes the City-scale Chemistry (CityChem) extension of the urban dispersion model EPISODE with the aim to enable chemistry/transport simulations of multiple reactive pollutants on urban scales. The new model is called CityChem-EPISODE. The primary focus is on the simulation of urban ozone concentrations. Ozone is produced in photochemical reaction cycles involving nitrogen oxides (NOx) and volatile organic compounds (VOC) emitted by various anthropogenic activities in the urban area. The performance of the new model was evaluated with a series of synthetic tests and with a first application to the air quality situation in the city of Hamburg, Germany. The model performs fairly well for ozone in terms of temporal correlation and bias at the air quality monitoring stations in Hamburg. In summer afternoons, when photochemical activity is highest, modelled median ozone at an inner-city urban background station was about 30 % lower than the observed median ozone. Inaccuracy of the computed photolysis frequency of nitrogen dioxide (NO2) is the most probable explanation for this. CityChem-EPISODE reproduces the spatial variation of annual mean NO2 concentrations between urban background, traffic and industrial stations. However, the temporal correlation between modelled and observed hourly NO2 concentrations is weak for some of the stations. For daily mean PM10, the performance of CityChem-EPISODE is moderate due to low temporal correlation. The low correlation is linked to uncertainties in the seasonal cycle of the anthropogenic particulate matter (PM) emissions within the urban area. Missing emissions from domestic heating might be an explanation for the too low modelled PM10 in winter months. Four areas of need for improvement have been identified: (1) dry and wet deposition fluxes; (2) treatment of photochemistry in the urban atmosphere; (3) formation of secondary inorganic aerosol (SIA); and (4) formation of biogenic and anthropogenic secondary organic aerosol (SOA). The inclusion of secondary aerosol formation will allow for a better sectorial attribution of observed PM levels. Envisaged applications of the CityChem-EPISODE model are urban air quality studies, environmental impact assessment, sensitivity analysis of sector-specific emission and the assessment of local and regional emission abatement policy options.

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La reconstrucción de Teruel: el devenir de una identidad | The reconstruction of Teruel: the evolution of an identity

ZARCH ◽

10.26754/ojs_zarch/zarch.201661455 ◽

2016 ◽

pp. 94

Author(s):

Miguel Sancho ◽

Beatriz Martín

Keyword(s):

Civil War ◽

Urban Area ◽

Spanish Civil War ◽

Urban Fabric ◽

The People ◽

The Future ◽

Historical Identity ◽

The City

Como consecuencia de la devastación a la que se verá sometida Teruel durante la guerra civil española gran parte del núcleo urbano se verá afectado. Esta dramática situación planteará la necesidad reconstruir la ciudad pero también la posibilidad de renovar la trama urbana. En el presente artículo se estudiaran las distintas propuestas llevadas a cabo durante este proceso, la tensión entre las ideas reformistas que entenderán la situación como una oportunidad renovadora sin prejuicios e ideas mucho más conservacionistas preocupadas por la identidad histórica de la ciudad, enfrentarán a los distintos agentes involucrados y finalmente dará lugar a la definitiva actuación propuesta. Es imprescindible conocer y reflexionar sobre una sucesión de ideas que plasmadas sobre el papel pueden decidir el futuro de un pueblo, pero también la conservación de su pasado, de su memoria.As a result of the devastation which will come under Teruel during the Spanish civil war much of the urban area will be affected. This dramatic situation arises the need to rebuild the city but also the possibility of renewing the urban fabric. In this article, the various proposals made during this process will be evaluated. The tension between reformist ideas to understand the situation as a renewed and unprejudiced opportunity and much more conservationist ideas concerned with the historical identity of the city will create a confrontation between different involved agents and ultimately lead to the final proposed action. It is essential to know and think of a series of ideas that once reflected on paper can decide the future of the people, but also the preservation of their past, their memory.

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Revitalization Model of Medan City Based Home Shop as an Image-Forming Identity City

International Journal of Architecture and Urbanism ◽

10.32734/ijau.v4i2.4517 ◽

2020 ◽

Vol 4 (2) ◽

pp. 165-173

Author(s):

Deni Saadah Purba ◽

Dwi Lindarto Hadinugroho

Keyword(s):

Urban Area ◽

Secondary Data ◽

Multiple Functions ◽

Cultural Aspects ◽

Commercial Area ◽

The Face ◽

Qualitative Descriptive ◽

The City ◽

Story Building

The Shophouse is a multi-story building that has multiple functions. The 1st floor is used as a commercial area, and the 2nd floor above is used as a residential place. Revitalization is an effort to revive an urban area through improving the quality of the environment, taking into accounts the socio- cultural aspects and characteristics of the region. The facade is the identity of the building itself by retaining elements and elements on the building façade. This research purposes of finding the dominant appearance of the elements of finding in the shophouse façade in the city of Medan, which is useful for the design revitalizing model of the face of the city as the image of the identity city. The method used in this study is qualitative descriptive, with a variable observation phase with the collection of primary and secondary data through direct observation in the field, then analyzed the shop facade elements that have been Grouped and found the most dominant element. The result of the analysis of the dominant facade element found in the shop façade of Medan is China, Malay, and India. The findings of the dominant facade element can be the identity identifier of the region and city of Medan today.

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Sustainable Site System

10.32920/ryerson.14657196.v1 ◽

2021 ◽

Author(s):

Jorden J. S. Lefler

Keyword(s):

Urban Area ◽

Urban Areas ◽

Architectural Design ◽

Heat Island ◽

Rating Systems ◽

Island Effect ◽

Key Points ◽

Site Design ◽

The Impact ◽

The City

This thesis discusses a method of analysing the input of interventions in a building's site design, all of which affect the heat island effect, bio-diversity and hydrology of urban areas. Existing standards from Toronto, Vancouver and Berlin have been researched and analysed. This paper presents an evolution of a method called biotope area factor used in Berlin, Germany. A synthesis of the approach of all three systems was considered and distilled into the key points which were then incorporated into the proposed method. In addition to the impact of an individual building, it also includes the impact from the adjacent street area. The final components of this thesis are the application of the method developed to an urban area in the city of Toronto and results showing the impacts on architectural design from site rating systems.

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An automated classification system for urban areas matching the ‘city country fingers’ pattern: the cases of Kamakura (Japan) and Acireale (Italy) cities

Journal of Urban Ecology ◽

10.1093/jue/juab023 ◽

2021 ◽

Vol 7 (1) ◽

Author(s):

Roberto Spina ◽

Emiliano Tramontana

Keyword(s):

Urban Area ◽

Urban Areas ◽

Agricultural Land ◽

Google Earth ◽

Classification Model ◽

Complete Analysis ◽

City Development ◽

Essential Condition ◽

Green Areas ◽

The City

Abstract The uncontrolled expansion of urban areas is one of the main factors that reduce the liveability of cities. In recent years, to contrast urban sprawl, several nations have promoted policies aimed at developing urban green spaces. The importance of green oases within cities had already been highlighted, in 1977, by the architect Christopher Alexander who had developed a series of patterns including ‘City Country Fingers’ claiming that city development should consider the prolongation of country land in to the urban area. In several cities, especially in Japan, it is possible to recognize the imprint of urban development based on country fingers. This term refers to extensive urban intersections of agricultural land or wooded hills which, from the peripheral areas, penetrate the city. Inside them, there are urban windows, called city fingers, whose development direction is opposite to those of the country fingers. To recognize and analyze, in an automated way, these particular structures, a Python-based application was created. Starting from the original high-resolution image of Google Earth, a complete analysis was performed, labeling and delimiting urban and vegetational areas and extrapolating the main geometric parameters of the country and city fingers. The finalization of the results obtained was carried out through a classification model whose criteria were based on Alexander’s pattern. Thanks to this classification scheme, the distinction between Active Green Areas (country fingers) and Passive Green Areas (gardens and public parks) have been revealed for the analyzed cities. The tests performed showed almost ideal conditions for the city of Kamakura and a limited match for the urban area of Acireale. The proposed method is suitable for fields of application that require a qualitative and quantitative determination of the vegetation cover present within the city, an essential condition for correct territorial planning.

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Experiências Urbanas: Migrantes e Modos de Viver e Trabalhar na Periferia de Campina Grande na Década de 1960 * Urban Experiences: Migrants and Ways of Living and Working in the Outskirts of Campina Grande in the 1960s

História e Cultura ◽

10.18223/hiscult.v1i2.739 ◽

2013 ◽

Vol 1 (2) ◽

pp. 89

Author(s):

HILMARIA XAVIER DA SILVA

Keyword(s):

Economic Growth ◽

Urban Area ◽

Urban Center ◽

Street Vendors ◽

Men And Women ◽

Rural Workers ◽

Life Conditions ◽

The 1960S ◽

The City

Resumo: A partir do final da década de 1940 e início de 1950, Campina Grande passa por uma significativa urbanização e expansão, favorecida pelo crescimento econômico. Observamos que trabalhadores do campo migraram da zona rural para a zona urbana de Campina Grande à medida que o trabalho na lavoura estava se tornando inviável em razão das secas e viam no centro urbano de Campina possibilidades outras de trabalhar e ter condições de vida mais dignas. Nosso trabalho intenta refletir sobre como alguns populares migraram para Campina Grande no fim da década de 1950 e década de 1960, modificando suas práticas no mundo do trabalho e alterando as características da malha urbana, já que, concentrando-se na periferia, homens e mulheres outrora lavradores passaram agora a desempenhar funções de vigilantes, pedreiros, lavadeiras, vendedores ambulantes, carroceiros, quebradores de pedra, dentre outras.Palavras-chave: Migração, Campina Grande, Trabalho. Abstract: From the late 1940s and early 1950s, Campina Grande undergoes a significant urbanization and expansion, favored by economic growth. We observed that rural workers migrated from rural to urban area in Campina Grande in so far as the farming activity was becoming unviable due to droughts and they could see, in the urban center of Campina, other possibilities of working and worthier life conditions. Our work attempts to reflect on how some popular migrated to Campina Grande in the late 1950s and 1960s, changing their practices in the workplace and changing the characteristics of the city, because massing in the periphery, men and women who were ploughpeople in past, have now the role of watchers, bricklayers, washerwomen, street vendors, cart drivers, stone breakers, among others.Keywords: Migration – Campina Grande – Work.

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Nature and the city: the salt-works park in the urban area of Cagliari (Sardinia, Italy)

Journal of Political Ecology ◽

10.2458/v20i1.21771 ◽

2013 ◽

Vol 20 (1) ◽

pp. 329 ◽

Cited By ~ 1

Author(s):

Franco Lai

Keyword(s):

Urban Area ◽

The State ◽

Public Park ◽

Outdoor Activities ◽

Urban Sewage ◽

Salt Works ◽

Coastal Cities ◽

Heritage Site ◽

Stakeholder Support ◽

The City

The re-use and the domestication of nature in abandoned areas is becoming a theme of increasing relevance in European (and Italian) public debate. This article uses Gilles Clément's concept of 'third landscape' to understand the transformation of an urban salt works into a public park. Salt production in Cagliari (Sardinia, Italy) was suspended in 1984 because of pollution from urban sewage. Some years after abandonment, the state salt works eventually became a public park. People frequented the area before its establishment and eventually the salt works became a place for running, canoeing, walking, biking, birdwatching and other outdoor activities. The article shows how this abandoned area became a park and heritage site, though stakeholder support. It analyzes the local discourse that continues to represent and protect the area as 'green,' where nature can be enjoyed, despite its industrial heritage.Keywords: salt works, wetlands, coastal parks, European coastal cities, Sardinia

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Understanding Urban Growth in Beijing-Tianjin-Hebei Region over the Past 100 Years Using Old Maps and Landsat Data

Remote Sensing ◽

10.3390/rs13163264 ◽

2021 ◽

Vol 13 (16) ◽

pp. 3264 ◽

Cited By ~ 1

Author(s):

Shuang Li ◽

Zhongqiu Sun ◽

Yafei Wang ◽

Yuxia Wang

Keyword(s):

Remote Sensing ◽

Urban Area ◽

Spatial Data ◽

Urban Expansion ◽

Remote Sensing Images ◽

The Past ◽

Old Maps ◽

The World ◽

The City

Studying urban expansion from a longer-term perspective is of great significance to obtain an in-depth understanding of the process of urbanization. Remote sensing data are mostly selected to investigate the long-term expansion of cities. In this study, we selected the world-class urban agglomeration of Beijing-Tianjin-Hebei (BTH) as the study area, and then discussed how to make full use of multi-source, multi-category, and multi-temporal spatial data (old maps and remote sensing images) to study long-term urbanization. Through this study, we addressed three questions: (1) How much has the urban area in BTH expanded in the past 100 years? (2) How did the urban area expand in the past century? (3) What factors or important historical events have changed the development of cities with different functions? By comprehensively using urban spatial data, such as old maps and remote sensing images, geo-referencing them, and extracting built-up area information, a long-term series of urban built-up areas in the BTH region can be obtained. Results show the following: (1) There was clear evidence of dramatic urban expansion in this area, and the total built-up area had increased by 55.585 times, from 126.181 km2 to 7013.832 km2. (2) Continuous outward expansion has always been the main trend, while the compactness of the built-up land within the city is constantly decreasing and the complexity of the city boundary is increasing. (3) Cities in BTH were mostly formed through the construction of city walls during the Ming and Qing dynasties, and the expansion process was mostly highly related to important political events, traffic development, and other factors. In summary, the BTH area, similarly to China and most regions of the world, has experienced rapid urbanization and the history of such ancient cities should be further preserved with the combined use of old maps.

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