scholarly journals ISOLASI BAKTERI RESISTENSI MERKURI DARI LIMBAH PENAMBANGAN EMAS KABUPATEN BURU, MALUKU (Isolation of Mercury Resistance Bacteria from Gold Mining Waste in Buru District, Maluku)

2020 ◽  
Vol 27 (1) ◽  
pp. 33
Author(s):  
Rosita Mangesa ◽  
Kasmawati Kasmawati

AbstrakPulau Buru merupakan salah satu pulau penambangan emas dan banyak dilakukan secara illegal dengan melibatkan penggunaan merkuri untuk alat bantu dalam proses ekstraksi emas melalui proses amalgamasi. Merkuri merupakan bahan kimia yang berbahaya dan bersifat toksik bagi manusia dan juga lingkungan, dan dampak dari penggunaan merkuri ini telah dirasakan oleh masyarakat setempat. Penelitian ini bertujuan untuk memperoleh bakteri yang resisten terhadap merkuri sehingga dapat digunakan dalam proses bioremediasi. Penelitian ini merupakan penelitian skala laboratorium dan dianalisis secara deskriptif. Hasil penelitian ini yaitu dari kedua lokasi pengambilan sampel diperoleh 17 isolat dengan morfologi yang berbeda-beda serta dari ke-17 isolat tersebut resisten terhadap merkuri.AbstractBuru Island is one of the gold mining islands and much of them are illegally that used mercury in gold extraction using uses mercury. Mercury is a chemical that is harmful and toxic to humans as well as the environment, and recently the impact of mercury use has been found by the local community. This study aims to obtain bacteria that are resistant to mercury so that it can be used in the bioremediation process. This research is a laboratory scale research and analyzed descriptively. The results of this study, namely from the two sampling locations obtained 17 isolates with different morphologies and from the 17 isolates were resistant to mercury.

2021 ◽  
Vol 4 (2) ◽  
pp. 11
Author(s):  
Carlos Mestanza-Ramón ◽  
◽  
Giovanni D’Orio ◽  
Salvatore Straface ◽  
◽  
...  

ASGM Mining processes have increased in recent years, becoming one of the main activities re-sponsible for serious impacts on ecosystems, affecting biodiversity and valuable resources such as soil and water. It is necessary to analyze the successful management developed by some countries in gold extraction, through innovative techniques and procedures, and recommend its replication in Ecuador. It is undeniable that mercury is one of the main contaminants in gold mining, it is important to establish the best techniques to protect natural resources. The first section of this paper analyzed the changes in Ecuadorian mining management with a focus on gold mining processes, followed by a description of ASGM mining and mercury use in Ecuador. Finally, the main sources of contamination were analyzed and recommendations were made to improve mining management and reduce contamination of water bodies. The methodology used was based on a bibliographic review of gray and scientific literature. The recommendations establish that mining management in Ecuador should focus its efforts on improving control and monitoring capacity, regularization of mining registries, and strengthening regulations with new policies. Finally, to reduce the impact of Hg on water bodies, it is necessary to educate ASGM miners about the risks of indiscriminate use of mercury and about techniques that can provide better socioeconomic benefits.


2017 ◽  
Vol 18 (1) ◽  
pp. 183-192 ◽  
Author(s):  
Rojacques Mompremier ◽  
Óscar Arturo Fuentes Mariles ◽  
Kebreab Ghebremichael ◽  
Ana Elisa Silva Martínez ◽  
José Elías Becerril Bravo

Abstract The objective of this study was to evaluate the factors that affect the formation and diffusion of disinfection by-products, especially trihalomethanes (THM), in a laboratory-scale water distribution network constructed with three different pipe materials. Sampling locations were chosen on the basis of residence time, pipe material and mixing zone. Water samples were collected and analyzed for temperature, pH, total organic carbon, turbidity, free chlorine and THM. Experiments were carried out where two different flow directions at cross junctions were studied. It was observed that for incoming flow at 90° with varying flow rate, mixing was shown to be incomplete where inflows tend to bifurcate rather than mix completely. For two incoming flows in opposing direction (180°), solute mixing has shown to be perfect due to the collision of the fluid streams. The results demonstrated how THM concentration can greatly vary in the same water distribution network due to the impact of pipe material, residence time and the outcome of mixing at cross junctions.


Author(s):  
Lyudmyla Mishchenko ◽  
◽  
Dmytro Mishchenko ◽  

The actualization of the results of financial decentralization in Ukraine as part of the reform of decentralization of power and the development of proposals for its improvement is explained by the fact that a clear division of functions, powers and financial resources between national and regional levels is the basis for the well-being of our citizens. opportunities for its sustainable socio- economic development on a democratic basis. It is noted that financial decentralization is a process of giving authority to mobilize revenues and expenditures of local governments in order to increase the effectiveness of the implementation of these powers and better management of community budgets. It is established that unlike traditional entrepreneurship, which focuses on profit generation, the purpose of social entrepreneurship is to create and accumulate social capital. Abroad, social enterprises operate successfully in the fields of education, the environment, human rights, poverty reduction and health care, and their development and dissemination is one way to improve the living conditions of citizens. A similar mission is entrusted to local governments, which allows us to consider the revival of social entrepreneurship as an important element in improving self-government policy. It is determined that in modern conditions social entrepreneurship is one of the tools to ensure the ability of the local community to provide its members with an appropriate level of education, culture, health, housing and communal services, social protection, etc., as well as plan and implement programs efficient use of available natural and human resources, investment and infrastructural support of territorial communities. Due to financial decentralization, local governments have received additional resources that can be used to create economic incentives to promote social entrepreneurship in small and medium-sized businesses at the community level.


Inventions ◽  
2021 ◽  
Vol 6 (3) ◽  
pp. 46
Author(s):  
Catalin Anton ◽  
Angela-Eliza Micu ◽  
Eugen Rusu

Traditionally and socially, the tourism in Constanta is considered to be important to the local economy. Sun and beach locations are both a draw for locals and tourists to the city, on the Black Sea. However, vacation-oriented activities in the city only have a seasonal cycle. In this paper, we proposed to analyze the mass tourist activity in Constanta, taking into account economic, social, and environmental conditions. Additionally, we attempted to build a model based on the data available. The model was developed using a PESTEL analysis to determine the supportability factor of the indicators identified. We also set out to create a projection of the activities proposed for analysis by 2050. To create a model for coastal areas, the data used in this research must be accurate and consistent. Furthermore, correctly identifying indicators and their relationships is a critical step in conducting a thorough study. Last but not least, finding the calculation coefficient for the activity in question is critical, as collecting data from various activities might be challenging when trying to find a feasible model.


Author(s):  
Jesse Jonkman

Abstract This article maps the contentious forms of political life that emerge when multicultural rights and non-formal gold extraction coincide. Specifically, it shows how, in the Colombian department of Chocó, Afro-descendant community councils have produced a unique form of mining governance that, while depending for its legitimacy on everyday uses of Afro-Colombian legislation, consists of the organisation, taxation and policing of mining activities that are in tension with official notions of extractive and multicultural law. In exploring such ‘underground’ cultural politics, the article highlights the limits of state-centric analyses of ‘neoliberal multiculturalism’ and, accordingly, underscores the instrumental role that governed subjects play in the on-the-ground unfolding of multicultural governance regimes.


Author(s):  
Gloria Onosu

This study focused on understanding the cultural immersion experience of students who participated in Study Abroad Programs (SAP) and Global Service Learning Programs (GSL). The study looked at how the immersion experience impacted the participants’ view of self and others upon re-entry into their local community. Specifically, we applied the perspective transformation theoretical framework to analyze the extent to which participation in cultural immersion programs transforms students’ perceptions of self and others. The analysis of the semi-structured interviews suggested that by engaging in intentional immersion and guided reflections, participants became aware of the need to reevaluate their perspectives, expectations, and assumptions about self and others. We also found that there were differences in the way participants experienced the cultural immersion process and the impact it had on cultural awareness and self-identity.


2020 ◽  
Author(s):  
Ike Mokogwu ◽  
Paul Hammonds ◽  
Sam Clare Wilson ◽  
Caitlin Healy ◽  
Ewan Sheach

2016 ◽  
Vol 49 (6) ◽  
pp. 685-716 ◽  
Author(s):  
Jamie Anderson ◽  
Kai Ruggeri ◽  
Koen Steemers ◽  
Felicia Huppert

Empirical urban design research emphasizes the support in vitality of public space use. We examine the extent to which a public space intervention promoted liveliness and three key behaviors that enhance well-being (“connect,” “be active,” and “take notice”). The exploratory study combined directly observed behaviors with self-reported, before and after community-led physical improvements to a public space in central Manchester (the United Kingdom). Observation data ( n = 22,956) and surveys (subsample = 212) were collected over two 3-week periods. The intervention brought significant and substantial increases in liveliness of the space and well-being activities. None of these activities showed increases in a control space during the same periods. The findings demonstrate the feasibility of the research methods, and the impact of improved quality of outdoor neighborhood space on liveliness and well-being activities. The local community also played a key role in conceiving of and delivering an effective and affordable intervention. The findings have implications for researchers, policy makers, and communities alike.


2021 ◽  
pp. 1-15
Author(s):  
Constantina Costopoulou ◽  
Maria Ntaliani ◽  
Filotheos Ntalianis

Local governments are increasingly developing electronic participation initiatives, expecting citizen involvement in local community affairs. Our objective was to assess e-participation and the extent of its change in local government in Greece. Using content analysis for 325 Greek municipal websites, we assessed e-participation status in 2017 and 2018 and examined the impact of change between these years. The assessment regards two consecutive years since the adoption of digital technologies by municipalities has been rapid. The main findings show that Greek local governments have made significant small- to medium-scale changes, in order to engage citizens and local societies electronically. We conclude that the integration of advanced digital technologies in municipalities remains underdeveloped. We propose that Greek municipalities need to consider incorporating new technologies, such as mobile apps, social media and big data, as well as e-decision making processes, in order to eliminate those obstacles that hinder citizen engagement in local government. Moreover, the COVID-19 outbreak has highlighted the need for enhancing e-participation and policymakers’ coordination through advanced digital technologies.


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