scholarly journals Changes in the phytoplankton diversity of two oxbow lakes in a big city: a case study of Wrocław (Poland)

2016 ◽  
Vol 43 (1) ◽  
pp. 13-26
Author(s):  
Dorota Richter ◽  
Paulina Bączek
Keyword(s):  
Taxonomic Diversity ◽  
Water Bodies ◽  
Taxonomic Structure ◽  
Oxbow Lakes ◽  
Phytoplankton Diversity ◽  
Big City ◽  
Algal Assemblages ◽  
Cyanobacteria And Algae ◽  
The City

Abstract The subject of this study is to analyse changes in the taxonomic structure and development intensity of phytoplankton and, thus, to determine the diversity of cyanobacteria and algae along with the trophy state of two oxbow lakes in the Wrocław area (south-western Poland). The analysis of samples and data from previous years showed a total of 244 cyanobacteria and algae species within these two lakes. The species composition changed significantly in both of them – there were found 90 species new to the studied flora (37% of current flora) and 74 species which were previously recorded. The diversity of cyanobacteria and algae reflects the conditions in these water bodies and each change in ecological conditions (e.g., anthropological dangers) is reflected by a change in the phytoplankton assemblage structure. Consequently, knowledge of taxonomic diversity is useful in monitoring water bodies to preserve them in good conditions. Both studied oxbow lakes belong to eutrophic ecosystems as evidenced by their phycoflora, which is rich in species characteristic of high-trophy water, and recorded water blooms. The analysis of changes in cyanobacterial and algal assemblages in these lakes was also a basis for determining their trophy and finding it to be progressively eutrophic. Regular phycological studies of Wrocław numerous water bodies are essential and, in the future, will allow us to protect them and to react quickly in case of danger to these ecosystems. It will also allow us to study eutrophication processes in the water bodies that are crucial to the city.

scholarly journals Chemical Incident Analysis Involving Storage of Fertilizer Product

2021 ◽  
Vol 38 (1) ◽  
Author(s):  
Rogerio De Medeiros Tocantins ◽  
Bettina Tomio Heckert ◽  
Rafael Salum de Oliveira ◽  
Hélio João Coelho ◽  
Gisele Chibinski Parabocz ◽  
...  
Keyword(s):  
Chemical Reaction ◽  
Water Bodies ◽  
Reaction Products ◽  
Future Studies ◽  
Adjacent Water ◽  
Forensic Engineering ◽  
Fertilizer Material ◽  
The City ◽  
Incident Analysis

A forensic engineering analyses of a chemical incident is presented that was classified as a self-sustaining decomposition (SSD) event, which occurred in a load of 10,000 tons of NK 21-00-21 fertilizer bulk stored inside a warehouse in the city of São Francisco do Sul in Brazil. The chemical reaction developed within the fertilizer mass and took several days to be controlled, resulting in the evacuation of thousands of residents. The water used to fight against the reaction, after having contact with the load of fertilizer material, promoted changes in adjacent water bodies, causing the death of animals (fish, crustaceans, and amphibians). The smoke from the chemical reaction products damaged the incident’s surrounding vegetation. Large SSD events are rare, with an average worldwide frequency of one every three years. Therefore, in addition to presenting a case study of this type of phenomenon, the main objective of this work is to discuss the causes that led to SSD reaction at this event, evaluate its consequences, and motivate future studies.

scholarly journals Spatiotemporal association of rapid urbanization and water-body distribution on hemorrhagic fever with renal syndrome: A case study in the city of Xi’an, China

2022 ◽  
Vol 16 (1) ◽  
pp. e0010094
Author(s):  
Li Shen ◽  
Minghao Sun ◽  
Xiao Wei ◽  
Yao Bai ◽  
Qingwu Hu ◽  
...  
Keyword(s):  
Renal Damage ◽  
Hemorrhagic Fever ◽  
Northwest China ◽  
Water Bodies ◽  
Rapid Urbanization ◽  
Body Distribution ◽  
Periodic Time Series ◽  
The City ◽  
Xi’An City

Hemorrhagic fever with renal syndrome (HFRS) is a zoonosis characterized by clinical features of high fever, hemorrhage, and renal damage. China has the largest number of HFRS cases worldwide, accounting for over 90% of the total reported cases. In this paper, we used surveyed HFRS data and satellite imagery to conduct geostatistical analysis for investigating the associations of rapid urbanization, water bodies, and other factors on the spatiotemporal dynamics of HFRS from year 2005 to 2018 in Xi’an City, Northwest China. The results revealed an evident epidemic aggregation in the incidence of HFRS within Xi’an City with a phenomenal fluctuation in periodic time series. Rapid urbanization was also found to greatly affect the HFRS incidence in two different time phases. HFRS caused by urbanization influences farmers to a lesser extent than it does to non-farmers. The association of water bodies with the HFRS incidence rate was found to be higher within the radii of 696.15 m and 1575.39 m, which represented significant thresholds. The results also showed that geomatics approaches can be used for spatiotemporally investigating the HFRS dynamic characteristics and supporting effective allocations of resources to formulate strategies for preventing epidemics.

scholarly journals NEW AESTHETICS OF THE CITY – DESIGN OF CYCLISTS TRAFFIC SIGNS

Transport ◽  
2005 ◽  
Vol 20 (6) ◽  
pp. 257-264 ◽  
Author(s):  
Branimir Stanić ◽  
Darko Vujin
Keyword(s):  
Urban Space ◽  
Second World War ◽  
World War ◽  
Big City ◽  
City Network ◽  
Technical Solutions ◽  
The City ◽  
Second World

In a number of towns and cities worldwide development programmes have been initiated to provide designated bike surfaces reserved for the movement of cyclists along city network. There has been an increase in the use of a bicycle as a regular means of personal transport, particularly in recent years when technical solutions and modern materials have allowed more active use of bicycles in big cities. Judging from the perspective of bicycles, Belgrade has undergone several significant changes. In the period preceding the Second World War the number of bicycles in the city (area of which used to be much smaller than today) was considerable, particularly in relation to vehicles. In the following periods, the development of the city has gradually pushed bicycles towards outskirts. Today bicycles are mostly used for recreation purposes. In this process special signalization addressed to cyclists has been mainly neglected. So‐called standard info‐solutions, essentially addressed to drivers, were applied. New aesthetics of the city, as one of possible ideas of the urban space re‐engineering, is based also on the introduction of “Zones 20” 20 mph (30 km/h) zones as well as on more active use of bicycles. In addition, both mentioned measures increase ecological quality of life in the city. A new concept of info‐system addressed to cyclists moving in a street network of a big city (Case Study of Belgrade, 2004) is presented in this paper.

scholarly journals PREVENTION AND ENFORCEMENT EFFORTS AGAINST CRIME EMBEZZLEMENT POLICE CAR RENTAL IN RESORT CITY OF SEMARANG (Case Study No. Bp / 87 / K / Bap / VII / 2018 / Reskrim on 6 June 2018)

2020 ◽  
Vol 2 (4) ◽  
pp. 631
Author(s):  
Insan Al Ha Za Zuna Darma Illahi ◽  
Ira Alia Maerani ◽  
Aryani Witasari
Keyword(s):  
Law Enforcement ◽  
Large City ◽  
Legal Research ◽  
The People ◽  
Car Rental ◽  
Big City ◽  
The City ◽  
Case Number ◽  
City Police

This study aims to identify and explain the efforts to control and enforcement of laws against the crime of embezzlement of car rental in City Police Large Semarang in Case Number: Bp / 87 / K / Bap / VII / 2018 / Reskrim on 6 June 2018, to provide educational material or contributing to the entrepreneur car rental and Police Large city Semarang in prevention and law enforcement against criminal acts of embezzlement of car rental in the city of Semarang, and to investigate and explain the constraints and find solutions in the response and enforcement of laws against the crime of embezzlement car rental Big City Police in Semarang.This study uses empirical juridical approach or legal research Sociological with embezzlement case study specification car in Semarang. Data were collected from documents and interviews with investigators Vice Unit I resum Sat Criminal Police Large City Semarang to then analyzed using qualitative analysis, then concluded.The results showed that law enforcement is often done by the City Police of the Semarang to the crime of embezzlement car rental, while the factors that are the cause has not done of law enforcement due to limits in the Book of the Law of Criminal Law and the crime on complaint, therefore efforts conducted by the City Police of the Semarang can be divided into three attempts pre-emptive, preventive and repressive, these efforts are sometimes subject to constraints such as the difficulty of giving meaning to the people, cars rented a car loan, easy to hand over vehicles to consumers.Keywords: prevention efforts by law enforcement, the crime of embezzlement.

Study of Interior Materials as Passive Fire Protection in Karaoke Building (Case Study: Masterpiece Signature Family KTV Medan)

2020 ◽  
Vol 4 (1) ◽  
pp. 30-43
Author(s):  
Saras Ayu Faradita ◽  
Vinky Rahman
Keyword(s):  
Fire Protection ◽  
Analytical Hierarchy Process ◽  
Passive Protection ◽  
Fire Incident ◽  
Fire Disaster ◽  
Passive Fire Protection ◽  
Protection Systems ◽  
Hierarchy Process ◽  
The City

The fire incident in karaoke buildings in Indonesia which claimed many lives has occurred several times. According to the National Academy of Science US, the smoke toxins that come out of the fire disaster cause 50-80% of deaths. Refers to the data, it is necessary to check further about the building material response to fire during a fire incident. Masterpiece Signature Karaoke is a karaoke building that classified as large and magnificent in the city of Medan which has various material so that it is necessary to study the interior material as passive fire protection. The purpose is to find out how to assess the reliability of fire passive protection regard to the interior materials and recommendations or descriptions of right interior material planning using the Analytical Hierarchy Process (AHP). This method is efficacious to solve the problem of reliability in using interior materials as passive fire protection in Masterpiece Signature Family KTV Medan building with the results of an Adequate Level of reliability. Then, design recommendations were given for the use of interior materials in karaoke building to improve the reliability results to be better.The results are useful as information for other researchers and karaoke buildings regarding passive fire protection systems at the Masterpiece Signature Family KTV Medan.

Emplacing Berlin: Digital Itineraries and Short-term Study Abroad in the City

2018 ◽  
Vol 12 (1) ◽  
pp. 26-36 ◽  
Author(s):  
Richard B. Apgar
Keyword(s):  
Study Abroad ◽  
Urban Landscape ◽  
Physical Space ◽  
Short Term ◽  
Study Abroad Programs ◽  
Term Study ◽  
Digital Maps ◽  
Short Term Study ◽  
The City

As destination of choice for many short-term study abroad programs, Berlin offers students of German language, culture and history a number of sites richly layered with significance. The complexities of these sites and the competing narratives that surround them are difficult for students to grasp in a condensed period of time. Using approaches from the spatial humanities, this article offers a case study for enhancing student learning through the creation of digital maps and itineraries in a campus-based course for subsequent use during a three-week program in Berlin. In particular, the concept of deep mapping is discussed as a means of augmenting understanding of the city and its history from a narrative across time to a narrative across the physical space of the city. As itineraries, these course-based projects were replicated on site. In moving from the digital environment to the urban landscape, this article concludes by noting meanings uncovered and narratives formed as we moved through the physical space of the city.

Peculiarities of seasonal changes of taxonomic structure and number of weevil-beetles (Coleoptera, Curculionidae) of herptobios in Kharkiv urbocenoses (Ukraine)

2019 ◽  
Vol 16 (1) ◽  
pp. 25-35 ◽  
Author(s):  
N.A. Komaromi ◽  
A.V. Putchkov ◽  
V.Yu. Nazarenko
Keyword(s):  
Early Summer ◽  
Taxonomic Structure ◽  
Dynamic Density ◽  
Number Of Species ◽  
Summer Maximum ◽  
Minimal Quantity ◽  
Slight Rise ◽  
Suburban Forests ◽  
The City ◽  
Increased Activity

A total of 54 species in 35 genera of Curculionidae are registered in the urbocenoses of Kharkiv city. Only three species, Exomias pellucidus, Otiorhynchus raucus and Ot. ovatus, are recorded as dominants. Some other species (Urometopus nemorum, Sciaphobus squalidus and Glocianus punctiger) are sporadically noted in some sites as subdominants. The total number of species turned out to be higher in the herpetobios of plantings at periphery (31), slightly lower in private farmlands of the city (21), parks and plantings of the center (17 each), but minimal in suburban forests (11 species). The highest quantity of specimens were observed for the plantations of the center and margins of city: nevertheless, minimal quantity of specimens was registered at parks and woods. The maximum number of species (including all cenoses) was recorded from the end of April to first decade of May (28 species). From May to the end of June 15–18 species were registered. Ten species were recorded at July, and only six species at August. A slight rise was noted from the end of August to mid-September (11 species). In biotopes where Exomias pellucidus appeared to be the monodominant, the seasonal dynamic density of weevils reached a peak at late May or early June, but the significant decline was observed from early June to July. At the sites with several dominants, two or three peaks were registered: at spring (May) and at mid-summer (end of June or beginning of July). Furthermore, the number of weevils decreased gradually, but some species of Curculionidae were rather abundant even from the end of summer to September–October. The spring increase is reasoned by high density of species in the genus Otiorhynchus; the peak in early summer (maximum) is caused by the increased activity of majority of dominant species; the autumn peak is also caused by the high number of species of the genus Otiorhynchus. The level of sex index (by the example of E. pellucidus) differed significantly at all plots. It was higher for the plantations at the periphery of the city (0.70), and it was minimal at private farmlands (0.20). Relative conjugacy of sex index and dynamic density were not observed: the maximum abundances of quantity of Curculionidae were recorded 20–30 days earlier than the maximal numbers of the sex index.

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