Evaluating the success of sewer reconstruction by using carbamazepine as anthropogenic marker in groundwater

2011 ◽  
Vol 63 (4) ◽  
pp. 727-732 ◽  
Author(s):  
Katerina Ruzicka ◽  
Matthias Zessner ◽  
Alfred P. Blaschke ◽  
Robert Fenz ◽  
Manfred Clara ◽  
...  
Keyword(s):  
Antiepileptic Drug ◽  
Regional Scale ◽  
Adjacent Area ◽  
Wide Scale ◽  
The City ◽  
Anthropogenic Marker

The antiepileptic drug carbamazepine is a useful anthropogenic marker in groundwater to detect and quantify sewer exfiltration. In 2003 its application on a city wide scale enabled the identification of a trunk sewer in extremely bad structural status with an exfiltration (of wastewater into groundwater) rate in the adjacent area of around 5% compared to an average of approximately 1% in other parts of the city. After a reconstruction of the trunk sewer investigations were carried out again in 2008. Due to the reconstruction a decrease in exfiltration to roughly 3% could be achieved, which equals a reduction of exfiltration by about 45%. Thus carbamazepine emerged as suitable anthropogenic marker to assess sewer exfiltration and to evaluate the success of reconstruction measurements on a regional scale.

Monitoring of carbamazepine concentrations in wastewater and groundwater to quantify sewer leakage

2005 ◽  
Vol 52 (5) ◽  
pp. 205-213 ◽  
Author(s):  
R. Fenz ◽  
A.P. Blaschke ◽  
M. Clara ◽  
H. Kroiss ◽  
D. Mascher ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Groundwater Pollution ◽  
Wastewater Treatment Plants ◽  
Regional Scale ◽  
Domestic Wastewater ◽  
Limit Of Quantification ◽  
Wide Scale ◽  
The City ◽  
Bank Infiltration ◽  
Dry Weather Flow

Monitoring of carbamazepine concentrations in wastewater and groundwater enables us to identify and quantify sewer exfiltration. The antiepileptic drug carbamazepine is hardly removed in wastewater treatment plants and not or just slightly attenuated during bank infiltration and subsoil flow. Concentrations in wastewater are generally 1,000 times higher than the limit of quantification. In contrast to many other wastewater tracers carbamazepine is discharged to the environment only via domestic wastewater. The results from this study carried out in Linz, Austria indicate an average exfiltration rate of 1%, expressed as percentage of the dry weather flow that is lost to the groundwater on the city-wide scale. This rate is lower than sewage losses reported in most other studies which attempted to quantify exfiltration on the basis of groundwater pollution. However, it was also possible to identify one area with significantly higher sewage losses. This method seems to be very suitable for the verification of leakage models used to assess sewer exfiltration on a regional scale.

IMPLEMENTATION OF RESPONSIVE ARCHITECTURAL CONCEPTS IN THE DESIGN OF THE CIKOLE FOREST RESORT, BANDUNG, WEST JAVA

2019 ◽  
Vol 1 (1) ◽  
pp. 1
Author(s):  
Whinda Rofika Arofah ◽  
Asep Yudi Permana ◽  
Riskha Mardiana
Keyword(s):  
Function Analysis ◽  
Regional Scale ◽  
High Demand ◽  
Tourist Destination ◽  
West Java ◽  
Nature Tourism ◽  
Site Analysis ◽  
Site Design ◽  
The City ◽  
Conceptual Relationship

Indonesia has a lot of potential for nature tourism in the form of mountains, sea, and beaches. This is also an attraction for tourists to make Indonesia as the preferred natural tourist destination when on vacation. Especially West Java, West Java is one of the provinces that are in great demand by local and outside tourists.Besides being famous for its local culture and its unique culinary variety, West Java is also known for its cool air, especially in some parts that are still preserved in nature, the natural potential that is still good and is maintained as an attraction for West Java to attract tourists. One of the famous areas in the city of Bandung which is a tourist destination is the Lembang Region.From the last five years the lodging area in Lembang has increased, currently in Lembang sub-district itself has 13 lodging units in the form of resorts. The amount itself is influenced by the high demand for lodging accommodation especially when the holiday season arrives. But of that number, resorts that have complete and well-maintained facilities and conditions are still not completely even. Based on this fact, the purpose of designing this resort is expected to be the best tourist area in the region to be able to adjust to the conditions of the land conditions, be able to use and not damage the existing land on the design land.The study used in this design is based on the description that occurs today with the support of the literature that supports the theory and analysis that is done. Implementation analysis was carried out using macro and microanalysis methods. Macro analysis is an analysis on a regional scale. While microanalysis is an analysis of the design site, which includes activity analysis, function analysis, space analysis, site analysis, shape analysis, and display and structural analysis and utility.The concept of site and building in this design will produce a conceptual relationship that will later become a guideline in making a design. This concept includes the proposed concept of site design, form, structure, and utility.

scholarly journals High honeybee abundances reduce wild bee abundances on flowers in the city of Munich

Oecologia ◽  
2021 ◽  
Author(s):  
Susanne S. Renner ◽  
Marie Sophie Graf ◽  
Zoe Hentschel ◽  
Helen Krause ◽  
Andreas Fleischmann
Keyword(s):  
Apis Mellifera ◽  
Adjacent Area ◽  
Exploitative Competition ◽  
Wild Bees ◽  
European Cities ◽  
Urban Garden ◽  
Wild Bee ◽  
June July ◽  
The City ◽  
Clear Support

AbstractThe increase in managed honeybees (Apis mellifera) in many European cities has unknown effects on the densities of wild bees through competition. To investigate this, we monitored honeybees and non-honeybees from 01 April to 31 July 2019 and 2020 at 29 species of plants representing diverse taxonomic and floral-functional types in a large urban garden in the city of Munich in which the same plant species were cultivated in both years. No bee hives were present in the focal garden, and all bee hives in the adjacent area were closely monitored by interviewing the relevant bee keepers in both 2019 and 2020. Honeybee numbers were similar in April of both years, but increased from May to July 2020 compared to 2019. The higher densities correlated with a significant increase in shifts from wild bee to honeybee visits in May/June/July, while visitor spectra in April 2019 and 2020 remained the same. Most of the species that experienced a shift to honeybee visits in 2020 were visited mostly or exclusively for their nectar. There were no shifts towards increased wild bee visits in any species. These results from a flower-rich garden have implications for the discussion of whether urban bee keeping might negatively impact wild bees. We found clear support that high honeybee densities result in exploitative competition at numerous types of flowers.

scholarly journals Contribution of Local and Transboundary Air Pollution to the Urban Air Quality of Fukuoka, Japan

Atmosphere ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 431
Author(s):  
Ayako Yoshino ◽  
Akinori Takami ◽  
Keiichiro Hara ◽  
Chiharu Nishita-Hara ◽  
Masahiko Hayashi ◽  
...  
Keyword(s):  
Air Pollution ◽  
Air Quality ◽  
Urban Areas ◽  
Air Pollutants ◽  
Regional Scale ◽  
Gaseous Species ◽  
Transboundary Air Pollution ◽  
Local Air Pollution ◽  
The City

Transboundary air pollution (TAP) and local air pollution (LAP) influence the air quality of urban areas. Fukuoka, located on the west side of Japan and affected by TAP from the Asian continent, is a unique example for understanding the contribution of LAP and TAP. Gaseous species and particulate matter (PM) were measured for approximately three weeks in Fukuoka in the winter of 2018. We classified two distinctive periods, LAP and TAP, based on wind speed. The classification was supported by variations in the concentration of gaseous species and by backward trajectories. Most air pollutants, including NOx and PM, were high in the LAP period and low in the TAP period. However, ozone was the exception. Therefore, our findings suggest that reducing local emissions is necessary. Ozone was higher in the TAP period, and the variation in ozone concentration was relatively small, indicating that ozone was produced outside of the city and transported to Fukuoka. Thus, air pollutants must also be reduced at a regional scale, including in China.

scholarly journals Ancient trash mounds unravel urban collapse a century before the end of Byzantine hegemony in the southern Levant

2019 ◽  
Vol 116 (17) ◽  
pp. 8239-8248 ◽  
Author(s):  
Guy Bar-Oz ◽  
Lior Weissbrod ◽  
Tali Erickson-Gini ◽  
Yotam Tepper ◽  
Dan Malkinson ◽  
...  
Keyword(s):  
Ice Age ◽  
Sixth Century ◽  
Late Antique ◽  
Ceramic Analysis ◽  
Time Space ◽  
Wide Scale ◽  
Space Dynamics ◽  
High Level ◽  
The City ◽  
Climate Proxies

The historic event of the Late Antique Little Ice Age (LALIA) was recently identified in dozens of natural and geological climate proxies of the northern hemisphere. Although this climatic downturn was proposed as a major cause for pandemic and extensive societal upheavals in the sixth–seventh centuries CE, archaeological evidence for the magnitude of societal response to this event is sparse. This study uses ancient trash mounds as a type of proxy for identifying societal crisis in the urban domain, and employs multidisciplinary investigations to establish the terminal date of organized trash collection and high-level municipal functioning on a city-wide scale. Survey, excavation, sediment analysis, and geographic information system assessment of mound volume were conducted on a series of mounds surrounding the Byzantine urban settlement of Elusa in the Negev Desert. These reveal the massive collection and dumping of domestic and construction waste over time on the city edges. Carbon dating of charred seeds and charcoal fragments combined with ceramic analysis establish the end date of orchestrated trash removal near the mid-sixth century, coinciding closely with the beginning of the LALIA event and outbreak of the Justinian Plague in the year 541. This evidence for societal decline during the sixth century ties with other arguments for urban dysfunction across the Byzantine Levant at this time. We demonstrate the utility of trash mounds as sensitive proxies of social response and unravel the time–space dynamics of urban collapse, suggesting diminished resilience to rapid climate change in the frontier Negev region of the empire.

Examining the potential of otolith chemistry to determine natal origins of wild Lake Michigan Chinook salmon

2019 ◽  
Vol 76 (11) ◽  
pp. 2035-2044 ◽  
Author(s):  
Alexander C. Maguffee ◽  
Reneé Reilly ◽  
Richard Clark ◽  
Michael L. Jones
Keyword(s):  
Chinook Salmon ◽  
Classification Accuracy ◽  
Inductively Coupled Plasma ◽  
Lake Michigan ◽  
Oncorhynchus Tshawytscha ◽  
Regional Scale ◽  
Otolith Microchemistry ◽  
Inductively Coupled ◽  
Plasma Mass Spectrometry ◽  
Wide Scale

Previous research has demonstrated a large movement of hatchery-reared Chinook salmon (Oncorhynchus tshawytscha) from Lake Huron to Lake Michigan, suggesting the potential for wild fish to exhibit similar movement patterns. We assessed the feasibility of using otolith microchemistry to estimate the natal source composition of wild Chinook salmon in Lake Michigan and evaluate interbasin movement. Otolith pairs were extracted from juvenile and adult fish collected in 2015 and 2016 from Great Lakes tributaries. Otoliths were analyzed using laser ablation inductively coupled plasma mass spectrometry to determine trace element concentrations, and four multivariate classification algorithms were evaluated for classification accuracy. Juvenile data reclassified to their natal regions with up to 89% success on a basin level, with a random forest approach performing the best among all models. Assigning adults to their natal origins resulted in more success on a basin-wide scale (74% to 88%) compared with a regional scale (32% to 51%), but success was still below juvenile reclassification accuracy. Our findings suggest that otolith microchemistry can be used to estimate wild Chinook salmon interbasin movement and that classification accuracy can be improved by matching juvenile and adult year classes in our assessment samples. Ultimately, we intend to use these models to assess the effects of wild Chinook salmon interbasin movement on Lake Michigan predatory demand and evaluate the risks of various stocking alternatives.

scholarly journals Socio-spatial Disparities in Brussels and its Hinterland

2021 ◽  
pp. 271-291
Author(s):  
Rafael Costa ◽  
Helga A. G. de Valk
Keyword(s):  
Spatial Data ◽  
Local Level ◽  
Regional Scale ◽  
National Income ◽  
Socioeconomic Groups ◽  
Fine Grained ◽  
Spatial Disparities ◽  
Socioeconomic Segregation ◽  
Migration Flows ◽  
The City

AbstractBrussels’ urban and suburban landscape has changed considerably since the 1980s. The consolidation of socioeconomic fractures inside the city, a reinforcement of long-lasting disparities between the city and its prosperous hinterland, as well as the increasing diversification of migration flows—both high- and low-skilled—contributed to these disparities. Recent evolutions of these patterns, however, have not been investigated yet and therefore remain unknown. Besides, the extent to which segregation is primarily related to economic inequalities and to migration flows—or a combination/interaction between the two—so far has not been studied. This chapter offers a detailed overview of the socio-spatial disparities in the Brussels Functional Urban Area. Our analyses relied on fine-grained spatial data, at the level of statistical sections and of individualised neighbourhoods built around 100 m x 100 m grids. We analysed socioeconomic segregation measures and patterns, as well as their evolution between 2001 and 2011. Socioeconomic groups were defined based on individuals’ position with respect to national income deciles. In line with previous research, our results show very marked patterns of socioeconomic segregation in and around Brussels operating both at a larger regional scale and at the local level.

scholarly journals Revitalization of property asset on the Dumilah Waterpark through the infill development of new activities

2021 ◽  
Vol 778 (1) ◽  
pp. 012005
Author(s):  
E B Santoso ◽  
V K Siswanto ◽  
U Sulistyandari
Keyword(s):  
Net Present Value ◽  
Regional Scale ◽  
Payback Period ◽  
City Government ◽  
Internal Rate Of Return ◽  
Present Value ◽  
Infill Development ◽  
Financial Feasibility ◽  
The Government ◽  
The City

Abstract Property assets owned by the city government should provide high benefits as a source of regional income. The asset is aging so that its productivity will decrease. The government is trying to revitalize assets to make them more productive. The purpose of this study is to determine the best utilization that can provide the highest benefit. The method used to assess the development of these assets is through the high best use approach. Several alternatives to the use of assets compared with the analysis of financial feasibility include the calculation of IRR, NPV, PP, ROI. The utilization of property assets that is more profitable for landowners, based on the results of the FGDs that have been carried out there is an opportunity to build a supporting facility for the development of Dumilah Water Park as a Hotel and Convention Hall. Both of these facilities have considerable economic appeal to support the function of the city of Madiun as a center for trade and services on a regional scale. Based on the calculation of financial feasibility at Dumilah Water Park with an initial investment amount of Rp. 60,354,000,000.00 then the Net Present Value is obtained of Rp. 6,258,119. Likewise, the Internal Rate of Return was obtained at 11.41%, greater than the 10% interest rate. Meanwhile, the Payback Period of this investment is 8 years with an ROI of 10%.

scholarly journals Evaluation of readiness of selected transport system

2018 ◽  
Vol 19 (6) ◽  
pp. 47-52
Author(s):  
Piotr Bojar
Keyword(s):  
Transport System ◽  
Public Transport ◽  
Rolling Stock ◽  
Adjacent Area ◽  
The Public ◽  
Transport Operator ◽  
Transport Services ◽  
Safe Transport ◽  
High Level ◽  
The City

The basic tasks of the public public transport operator include reliable and safe transport services under the concluded transport contract with the transport organizer. The entity acting as the operator is obliged to punctually adhere to timetables, it is possible provided that the operator has a rolling stock characterized by a high level of readiness for rolling stock. The paper attempts to assess the readiness of the public transport operator performing tasks in the city and the adjacent area with a total number of residents not exceeding one hundred thousand.

scholarly journals Particulate polycyclic aromatic hydrocarbon spatial variability and aging in Mexico City

2007 ◽  
Vol 7 (6) ◽  
pp. 15693-15721 ◽  
Author(s):  
D. A. Thornhill ◽  
S. C. Herndon ◽  
T. B. Onasch ◽  
E. C. Wood ◽  
M. Zavala ◽  
...  
Keyword(s):  
Los Angeles ◽  
Mexico City ◽  
Regional Scale ◽  
Active Surface ◽  
Heterogeneous Reactions ◽  
Active Surface Area ◽  
Spatial And Temporal Patterns ◽  
Gaseous Species ◽  
Polycyclic Aromatic ◽  
The City

Abstract. As part of the Megacities Initiative: Local and Global Research Observations (MILAGRO) study in the Mexico City Metropolitan Area in March 2006, we measured particulate polycyclic aromatic hydrocarbons (PAHs) and other gaseous species and particulate properties at six locations throughout the city. The measurements were intended to support the following objectives: to describe spatial and temporal patterns in PAH concentrations, to gain insight into sources and transformations of PAHs, and to quantify the relationships between PAHs and other pollutants. Total particulate PAHs at the Instituto Mexicano del Petróleo (T0 supersite) located near downtown averaged 50 ng m−3, and aerosol active surface area averaged 80 mm2 m−3. PAHs were also measured on board the Aerodyne Mobile Laboratory, which visited six sites encompassing a mixture of different land uses and a range of ages of air parcels transported from the city core. Weak intersite correlations suggest that local sources are important and variable and that exposure to PAHs cannot be represented by a single regional-scale value. The relationships between PAHs and other pollutants suggest that a variety of sources and ages of particles are present. Among carbon monoxide, nitrogen oxides (NOx), and carbon dioxide, particulate PAHs are most strongly correlated with NOx. Mexico City's PAH-to-black carbon mass ratio of 0.01 is similar to that found on a freeway loop in the Los Angeles area and approximately 8–30 times higher than that found in other cities. Ratios also indicate that primary combustion particles are rapidly coated by secondary aerosol in Mexico City. If so, the lifetime of PAHs may be prolonged if the coating protects them against photodegradation or heterogeneous reactions.

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