scholarly journals Promoting Domestic Production of Fish Using Recirculating Aquaculture System (RAS)

2021 ◽  
Author(s):  
Shadrack Kwadwo Amponsah ◽  
Luiz Guilherme
Keyword(s):  
The Novel ◽  
Sustainable Food ◽  
Recirculating Aquaculture ◽  
Recirculating Aquaculture Systems ◽  
The Face ◽  
Production Technologies ◽  
Sub Saharan ◽  
Food And Nutritional Security ◽  
Global Population ◽  
Global Food

With the increasing global population and its associated high demand for fish protein, engineers are under pressure to develop systems that can maximise and intensify production of fish in an environmentally friendly and sustainable manner. This demand is escalated in the face of pandemics like the novel Covid-19, which have had serious toll on global food production and availability. The increasing fish demand over the years has caused the emergence of new aquaculture technologies such as the recirculating aquaculture systems (RAS). These fishponds are constructed in a way to ensure the efficient use of water. A technology extensively researched and developed by Brazilian researchers; the RAS technology has now been widely adapted to some developing countries in the sub-Saharan African sub region. Learning from the Brazilian and Ghanaian experiences, this chapter provides valuable information on these aquaculture production technologies and offers useful guidelines on their operation and management. The chapter also gives some highlight on available opportunities to better harness the RAS technology to promote sustainable food and nutritional security whiles improving on the general livelihood of adopters.

Beckett's Watt and Monastic Tradition

2016 ◽  
Vol 25 (1) ◽  
pp. 96-109
Author(s):  
Kristen Marangoni
Keyword(s):  
Boarding School ◽  
Illuminated Manuscripts ◽  
Concentration Camp ◽  
The Novel ◽  
Geometric Shapes ◽  
Art Form ◽  
Book Of Kells ◽  
The Face ◽  
Choral Arrangements ◽  
Medieval Illuminated Manuscripts

The enigmatic setting of Beckett's novel Watt has been compared to places as diverse as an insane asylum, a boarding school, a womb, and a concentration camp. Watt's experience at Knott's house does seem suggestive of all of these, and yet it may more readily conform to the setting of a monastery. The novel is filled with chants, meditations, choral arrangements, hierarchical classifications, and even silence, all highly evocative of a monastic lifestyle. Some of Watt's dialogue (such as his requests for forgiveness or reflections on the nature of mankind) further echoes various Catholic liturgies. Watt finds little solace in these activities, however. He feels that they are largely rote and purposeless as they are focused on Knott, a figure who in many ways defies linguistic description and physical know-ability. Watt's meditations and rituals become, then, empty catechisms without answers, something that is reflected in the extreme difficulty that Watt has communicating. In the face of linguistic and liturgical instability, the Watt notebooks present a counter reading that can be found in the thousand plus doodles that line its pages. The drawings reinforce as well as subvert their textual counterpart, and they function in many ways as the images in medieval illuminated manuscripts. The doodles in Watt often take the form of decorative letters, elaborate marginal drawings, and depictions of a variety of people and animals, and many of its doodles offer uncanny resemblances in form or theme to those in illuminated manuscripts like The Book of Kells. Doodles of saints, monks, crosses, and scribes even give an occasional pictorial nod to the monastic setting in which illuminated manuscripts were usually produced (and remind us of the monastic conditions in which Beckett found himself writing much of Watt). Beckett's doodles not only channel this medium of illuminated manuscripts, they also modernize its application. Instead of neat geometric shapes extending down the page, his geometric doodle sequences are often abstracted, fragmented, and nonlinear. Beckett also occasionally modernized the content of illuminated manuscripts: instead of the traditional sacramental communion table filled with candles, bread and wine, Beckett doodles a science lab table where Bunsen burners replaces candles and wine glasses function as beakers. It is through these modernized images that Watt attempts to draw contemporary relevance from a classic art form and to restore (at least partial) meaning to rote traditions.

Mansfield Park

2008 ◽  
Author(s):  
Jane Austen ◽  
Jane Stabler
Keyword(s):  
The Novel ◽  
Mansfield Park ◽  
Sexual Jealousy ◽  
The Family ◽  
The World ◽  
The Face

‘Me!’ cried Fanny … ‘Indeed you must excuse me. I could not act any thing if you were to give me the world. No, indeed, I cannot act.’ At the age of ten, Fanny Price leaves the poverty of her Portsmouth home to be brought up among the family of her wealthy uncle, Sir Thomas Bertram, in the chilly grandeur of Mansfield Park. There she accepts her lowly status, and gradually falls in love with her cousin Edmund. When the dazzling and sophisticated Henry and Mary Crawford arrive, Fanny watches as her cousins become embroiled in rivalry and sexual jealousy. As the company starts to rehearse a play by way of entertainment, Fanny struggles to retain her independence in the face of the Crawfords’ dangerous attractions; and when Henry turns his attentions to her, the drama really begins… This new edition does full justice to Austen’s complex and subtle story, placing it in its Regency context and elucidating the theatrical background that pervades the novel.

scholarly journals Maintaining paediatric cardiac services during the COVID-19 pandemic in a developing country in sub-Saharan Africa: guidelines for a “scale up” in the face of a global “scale down”

2020 ◽  
Vol 30 (11) ◽  
pp. 1588-1594
Author(s):  
Ogochukwu J. Sokunbi ◽  
Ogadinma Mgbajah ◽  
Augustine Olugbemi ◽  
Bassey O. Udom ◽  
Ariyo Idowu ◽  
...  
Keyword(s):  
Scale Up ◽  
Global Scale ◽  
International Travel ◽  
Sub Saharan Africa ◽  
African Continent ◽  
Tertiary Centre ◽  
The Face ◽  
Scale Down ◽  
Sub Saharan ◽  
International Experts

AbstractThe COVID-19 pandemic is currently ravaging the globe and the African continent is not left out. While the direct effects of the pandemic in regard to morbidity and mortality appear to be more significant in the developed world, the indirect harmful effects on already insufficient healthcare infrastructure on the African continent would in the long term be more detrimental to the populace. Women and children form a significant vulnerable population in underserved areas such as the sub-Saharan region, and expectedly will experience the disadvantages of limited healthcare coverage which is a major fall out of the pandemic. Paediatric cardiac services that are already sparse in various sub-Saharan countries are not left out of this downsizing. Restrictions on international travel for patients out of the continent to seek medical care and for international experts into the continent for regular mission programmes leave few options for children with cardiac defects to get the much-needed care.There is a need for a region-adapted guideline to scale-up services to cater for more children with congenital heart disease (CHD) while providing a safe environment for healthcare workers, patients, and their caregivers. This article outlines measures adapted to maintain paediatric cardiac care in a sub-Saharan tertiary centre in Nigeria during the COVID-19 pandemic and will serve as a guide for other institutions in the region who will inadvertently need to provide these services as the demand increases.

scholarly journals Sex Differences in Spatial Activity and Anxiety Levels in the COVID-19 Pandemic from Evolutionary Perspective

2021 ◽  
Vol 13 (3) ◽  
pp. 1110
Author(s):  
Olga Semenova ◽  
Julia Apalkova ◽  
Marina Butovskaya
Keyword(s):  
Environmental Risks ◽  
Economic Losses ◽  
General Level ◽  
The Novel ◽  
Health Attitudes ◽  
Spatial Activity ◽  
Sexual Specialization ◽  
The Face ◽  
Novel Virus ◽  
Virus Spreading

Despite the enforced lockdown regime in late March 2020 in Russia, the phenomenon of the continued virus spreading highlighted the importance of studies investigating the range of biosocial attributes and spectrum of individual motivations underlying the permanent presence of the substantial level of spatial activity. For this matter, we conducted a set of surveys between March and June 2020 (N = 492). We found that an individual’s health attitude is the most consistent factor explaining mobility differences. However, our data suggested that wariness largely determines adequate health attitudes; hence, a higher level of wariness indirectly reduced individual mobility. Comparative analysis revealed the critical biosocial differences between the two sexes, potentially rooted in the human evolutionary past. Females were predisposed to express more wariness in the face of new environmental risks; therefore, they minimize their mobility and outdoor contacts. In contrast to them, the general level of spatial activity reported by males was significantly higher. Wariness in the males’ sample was less associated with the novel virus threat, but to a great extent, it was predicted by the potential economic losses variable. These findings correspond to the evolutionary predictions of sexual specialization and the division of family roles.

scholarly journals Anaerobic Mineralization of Recirculating Aquaculture Drum Screen Effluent for Use as a Naturally-Derived Nutrient Solution in Hydroponic Cropping Systems

Conservation ◽  
2021 ◽  
Vol 1 (3) ◽  
pp. 151-167
Author(s):  
Joseph Tetreault ◽  
Rachel Fogle ◽  
Todd Guerdat
Keyword(s):  
Nutrient Solution ◽  
Agricultural Waste ◽  
The United States ◽  
Anaerobic Treatment ◽  
Production Costs ◽  
Effluent Treatment ◽  
Limiting Factors ◽  
Fertilizer Treatment ◽  
Recirculating Aquaculture ◽  
Recirculating Aquaculture Systems

Operation and effluent treatment costs are limiting factors for the success of recirculating aquaculture systems (RAS) in meeting seafood demand in the United States. Adopting a capture-and-reuse waste management model similar to terrestrial agriculture farmers would allow RAS farmers to monetize effluent and offset production costs. The moisture content and nutrient profile of RAS effluent makes it a potential option for use as a hydroponic fertilizer. Treatment of RAS waste is needed to mineralize particulate-bound nutrients before becoming a viable hydroponic nutrient solution. Anaerobic treatment (AT), a method used by municipal and agricultural waste treatment facilities to reduce total solids, has been shown to successfully mineralize particulate-bound nutrients from RAS effluent. Continuously mixed anaerobic batch bioreactors were used to evaluate the degree to which AT may mineralize particulate-bound nutrients in solid RAS waste. Concentrations of twelve different macro- and micro-nutrients were analyzed in the waste before and after treatment. Effluent samples were analyzed to determine the fraction of each nutrient in the solid and aqueous forms. This study showed that AT is an effective method to mineralize particulate-bound nutrients in RAS effluent and the mineralization rate data may be used to design a pilot-scaled flow-through RAS effluent treatment system.

Microscreen effects on water quality in replicated recirculating aquaculture systems

2015 ◽  
Vol 65 ◽  
pp. 17-26 ◽  
Author(s):  
Paulo Fernandes ◽  
Lars-Flemming Pedersen ◽  
Per Bovbjerg Pedersen
Keyword(s):  
Water Quality ◽  
Recirculating Aquaculture ◽  
Recirculating Aquaculture Systems
Sign in / Sign up

Export Citation Format

Share Document