scholarly journals Bioflok sebagai Solusi Mengatasi Permasalahan Lingkungan untuk Akuakultur Masa Depan Berkelanjutan : Sebuah Tinjauan

2020 ◽  
Vol 10 (1) ◽  
pp. 38-44
Author(s):  
Rini Marlida

       Aquaculture is currently the foundation of the world's animal protein provider. The sustainability of this sector is greatly influenced by business governance which must prioritize environmentally friendly aspects. Nutrient enrichment waste and the spread of fish and other aquatic organisms are significant issues present in aquaculture systems throughout the world today, especially intensive aquaculture. The purpose of writing this article is to provide an overview of biofloc as a solution in overcoming environmental problems for a sustainable future aquaculture. Intensive aquaculture applies high density maintenance and artificial feeding. The system leads to environmental problems because a large amount of waste produced contains solids and nutrients that accumulate into pollutants that cause eutrophication and toxins for aquatic organisms. Biofloc technology is a new approach to reduce the waste of aquaculture activities. In this system, heterotrophic bacteria and algae are grown together in flocks under controlled conditions with no or minimal water exchange. Biofloc is a nutrient package that can be utilized directly by farm animals. Biofloc also acts as biocontrol. Biofloc technology can help overcome problems in intensive aquaculture.

2016 ◽  
Vol 78 (4-2) ◽  
Author(s):  
Sri Hastuti ◽  
Subandiyono Subandiyono

The biofloc technology can control water quality under negligible water exchange. The aim of this study was to evaluate the  effects of stocking density on production and blood performance of catfish (Clarias gariepinus [Burchell, 1822]). The catfish were reared in biofloc system (heterotrophic bacteria and addition of sugar for a period of 10 wk and used three levels of density i.e. (500, 1 000, and 1 500) fish per m2. The production increased with the increasing of stocking density, relative growth rate decreased with the increasing of that. The stocking density of 1 500 fish per m2 on the biofloc technology can support maximum catfish production, health and proper water quality.


2021 ◽  
Vol 258 ◽  
pp. 05006
Author(s):  
Thanh Hang Pham ◽  
Lan Hien Do ◽  
Ekaterina Nikolaeva

Religious ecology is a new approach to the research of religions from the angle of ecological issues. The purpose of this approach is to find in the scriptures, theological theories and hermeneutic texts of different religions the values relating to ecology from the perspective of religious cognition, worldview, outlook on life, ethical principles, norms, rituals. Thus, religious ecology considers the ways religious organizations guide their followers’ behavior in relation to the environment around, evaluates their roles in dealing with the present environmental problems, thence proposes ways to put the ecological dimension of religions into practice. The paper focuses on the theoretical and practical issues of religious ecology in the word and Vietnam, towards the sustainable development goals.


2018 ◽  
pp. 5-29 ◽  
Author(s):  
L. M. Grigoryev ◽  
V. A. Pavlyushina

The phenomenon of economic growth is studied by economists and statisticians in various aspects for a long time. Economic theory is devoted to assessing factors of growth in the tradition of R. Solow, R. Barrow, W. Easterly and others. During the last quarter of the century, however, the institutionalists, namely D. North, D. Wallis, B. Weingast as well as D. Acemoglu and J. Robinson, have shown the complexity of the problem of development on the part of socioeconomic and political institutions. As a result, solving the problem of how economic growth affects inequality between countries has proved extremely difficult. The modern world is very diverse in terms of development level, and the article offers a new approach to the formation of the idea of stylized facts using cluster analysis. The existing statistics allows to estimate on a unified basis the level of GDP production by 174 countries of the world for 1992—2016. The article presents a structured picture of the world: the distribution of countries in seven clusters, different in levels of development. During the period under review, there was a strong per capita GDP growth in PPP in the middle of the distribution, poverty in various countries declined markedly. At the same time, in 1992—2016, the difference increased not only between rich and poor groups of countries, but also between clusters.


Author(s):  
Ekta Y

As IT sector is ruling the world now,confidentiality and security of information has become the most important inseparable aspect in information communication system. Keeping in view the same, a new approach called Visual Cryptography (VC) has been suggested by many researchers but there are some limitations with this scheme and cheating is one of the main problem among them. This paper intends to show the basis of cheating in VC in terms of cheating process, its detection methods and its prevention methods suggested by various researchers along with their merits and demerits. Finally, a good Cheating Immune Visual Cryptography Scheme (CIVCS) has been discussed which states the properties to be adopted by every Visual Cryptography scheme to make it immune to cheating attacks.


2020 ◽  
Author(s):  
Alfredo Metere

The SARS-CoV-2 pandemic is spreading fast throughout the world, and often the new cases are reported as community spread, which means that it is not possible to identify a specific cause for contagion. Household pets and farm animals live closely to humans and even if currently there is no empirical evidence of animal to human transmission, it has not been reported yet if transmission is in principle possible. This work addresses such hypothesis, confirming that transmission is theoretically possible, and highly likely to occur between humans and mammals. Less likely or not likely at all between humans and birds. Further research is needed to validate the birds to humans transmission. -- THIS ARTICLE IS CURRENTLY BEING EXPANDED AND REVISED --


Author(s):  
Yu.V. IRKHIN

The article analyzes the problems, achievements and contradictions in the genesis of the contemporary postmodern discourse. The author has carried out complex research, systematized and showed the main features and differences of postmodernism and metamodernism, as well as the role of neoliberal values in their development. The author has considered a new approach to the study of society and politics: neomodernist discourse with the dominant conservative values, opposing postmodern theory, methodology and practice he has identified the features of neomodernism: historicism, patriotism and healthy nationalism, populism, transactionalismn and realism in the world politics.


2021 ◽  
Vol 13 (10) ◽  
pp. 5491
Author(s):  
Melissa Robson-Williams ◽  
Bruce Small ◽  
Roger Robson-Williams ◽  
Nick Kirk

The socio-environmental challenges the world faces are ‘swamps’: situations that are messy, complex, and uncertain. The aim of this paper is to help disciplinary scientists navigate these swamps. To achieve this, the paper evaluates an integrative framework designed for researching complex real-world problems, the Integration and Implementation Science (i2S) framework. As a pilot study, we examine seven inter and transdisciplinary agri-environmental case studies against the concepts presented in the i2S framework, and we hypothesise that considering concepts in the i2S framework during the planning and delivery of agri-environmental research will increase the usefulness of the research for next users. We found that for the types of complex, real-world research done in the case studies, increasing attention to the i2S dimensions correlated with increased usefulness for the end users. We conclude that using the i2S framework could provide handrails for researchers, to help them navigate the swamps when engaging with the complexity of socio-environmental problems.


Animals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 789
Author(s):  
Magdalena Szyndler-Nędza ◽  
Małgorzata Świątkiewicz ◽  
Łukasz Migdał ◽  
Władysław Migdał

The popularity of meat from animals of native breeds is growing all over the world, due to consumer belief regarding its higher quality compared to meat from industrial farm animals. In addition, the living conditions (welfare) are of great importance for consumers. We observed the effect of different ways of keeping and feeding pigs of the same conservative breed on the quality of meat and its health benefits. The aim of the study was to compare the meat quality from pigs of the native Złotnicka Spotted breed, fattened intensively or extensively (with conventional farm-produced compound feed and acorns). The meat from free-range pigs extensively fed on silage and small amounts of acorns was characterized by a higher content of fat, which acts as a carrier for flavor and juiciness, as well as higher monounsaturated fatty acid (MUFA) content (p ≤ 0.05) and lower atherogenic, thrombogenic, and peroxidability indices (p ≤ 0.05). It may be stated that the meat quality of the native pig breed is significantly dependent on the housing and feeding method. A more beneficial effect on the quality of meat and its dietetic value, as well as its susceptibility to rancidity, can be obtained throughextensive pig feeding with roughage and the addition of acorns.


2021 ◽  
Vol 13 (2) ◽  
pp. 712
Author(s):  
Andrea Okanović ◽  
Jelena Ješić ◽  
Vladimir Đaković ◽  
Simonida Vukadinović ◽  
Andrea Andrejević Panić

Growing environmental problems and increasing requirements of green jobs force universities around the world not only to transform their curricula but also to enrich existing ones with contents related to the promotion of sustainable development. This paper aims to show the importance of measuring and monitoring the share of green contents in all university activities, as only in that way it is possible to monitor trends and give realistic assessments of their effect and importance. The paper presents a comparative analysis of different types of methodologies for assessing sustainable activities at universities as well as research conducted at the University of Novi Sad in Serbia and its comparison with the University of Gothenburg (Sweden). This research aims to point out the importance of increasing competitiveness in higher education through assessment of green content in a curriculum and its promotion. In this way, through eco-labeling methodology, it would be easier to identify those contents that, in a certain share, contribute to the promotion of sustainable development. Furthermore, this methodology can easily be extended across the country and the region, which would bring positive effects to all stakeholders in higher education.


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