Production commerciale de tilapia du Nil sur le Lac Kariba, Zimbabwe.

2020 ◽  
Author(s):  
Watson Pasipamire
Keyword(s):  
Production Management ◽  
Raw Materials ◽  
Economic Recession ◽  
Equity Capital ◽  
Farm Income ◽  
Processing Plant ◽  
Manufacturing Companies ◽  
Growing Stock ◽  
Regional Markets ◽  
Set Up

Abstract Lake Harvest Aquaculture (Pvt) Ltd developed freshwater tilapia production in 1996 on a location initially used by a freshwater shrimp farm set up by a Zimbabwean food company, La Cairn Food Ltd. The farm was established in 1997 and ten years later it produces 3000 tonnes of tilapia which, once harvested and processed, are exported to European and regional markets. The initial projections in terms of production and net farm income were made until 2001, the start of the economic recession. The decline in agricultural production due to insufficient resources and drought resulted in a lack of raw materials for food manufacturing companies. The continued downward trend in feed production affected the company so much that it could no longer support the growing stock of fish. Power and economic issues resulted in the decision by management to stop expanding the business in 2002. The cost of setting up Lake Harvest business is US$10,000,000. The company benefited from external financing from the Commonwealth Development Corporation (CDC) and Comafin, a private Pan-African company with equity capital, before the change in the mode of participation in the capital which took place in 2002. The main costs concerned installation and mooring of cages; and construction of a fish processing plant. Six sites were installed, each costing around US$350,000, including boats. The costs of the processing plant are estimated at around US$4,000,000. This case study aims to provide a technical itinerary and overview of Lake Harvest Aquaculture as a caged tilapia company in Lake Kariba, Zimbabwe; and provide a means of assessment and study for those interested in the development of cage aquaculture in Africa south of the Sahara. All major activities performed at Lake Harvest are described in the same sequence as on the farm: from production, management, to sale of the final product.

Commercial production of Nile tilapia on Lake Kariba, Zimbabwe.

2020 ◽  
Author(s):  
Keyword(s):  
Private Equity ◽  
Production Management ◽  
Raw Materials ◽  
Fish Farm ◽  
Sub Saharan Africa ◽  
Net Income ◽  
Manufacturing Companies ◽  
Lake Kariba ◽  
Sub Saharan ◽  
Set Up

Abstract Lake Harvest Aquaculture (Pvt) Ltd was first developed into a freshwater tilapia fish farm business in 1996 on premises that originally farmed freshwater prawns owned by one of Zimbabwe's food companies, Cairns Foods Ltd. The farm was set up in 1997 and, ten years later, has grown to a 3000-tonne fish farm where tilapia are produced primarily for processing and export to European and regional markets. The original targeted projections for production and net income of the farm were proving accurate until 2001 when the macro-economy began to shrink. Low production on crop farms due to inadequate resources and drought brought a shortage of raw materials to the feed manufacturing companies. The continuous downward trend in feed production affected the company as it failed to support its growing fish biomass. The feed and economy problems resulted in a decision by the board to stop expansion of the business in 2002. Lake Harvest business was set up at a cost of US $10,000,000. The business was externally funded by the Commonwealth Development Corporation (CDC Group plc) and Comafin, a pan-African private equity fund, before the share holding structure changed in 2002. The major costs were encountered on the installation and mooring of cages, and the construction of a fish processing factory. Six sites were installed, each costing around US $350,000, including boats. The processing factory cost around US $4,000,000. The objectives of this case study are to: * Provide a scenario and overview of Lake Harvest Aquaculture as a company growing tilapia in cages in Lake Kariba, Zimbabwe. * Provide a means of assessment and learning for those considering developing cage-based aquaculture in sub-Saharan Africa. All of the main activities carried out at Lake Harvest will be described in the same sequence as followed on-farm; production, management, and sale of the final product: * Breeding * Feeding * Sampling * Diving * Harvesting * Processing * Marketing.

Research and Development of Integrated Production Management System of Manufacturing Enterprises

2014 ◽  
Vol 621 ◽  
pp. 582-587
Author(s):  
Huai Ming Wang ◽  
Zhi Wei Cai ◽  
Jie Yu
Keyword(s):  
Development Strategy ◽  
Management System ◽  
Process Model ◽  
Production Management ◽  
Raw Materials ◽  
Integrated Production ◽  
Manufacturing Enterprises ◽  
Production Management System ◽  
Digital Development ◽  
Set Up

With digital development of modern manufacturing enterprises, requirements for production process control, resource scheduling and cost analysis are increasing. Enterprises are therefore required to manage the information and process in order to reduce cost and production time and improve quality of products and services. Information for a enterprise concerns orders, raw materials, technology, manufacturing process and products, with huge amount of data and complex correlations among data. Accordingly, data model of integrated production management system is complicated and difficult to develop. This paper analyzes technological document, production plan, production task, production cost and process and control of business activities. Method of building a complete set of information model and process model for manufacturing enterprises is presented, which makes modeling more effective and standardized. As one common method, the model driven approach is introduced to set up the database structure and development strategy of integrated production management system, which may reduce the workload and difficulty of development. Development of a system is realized and verified in practice.

ON THE PROCESSING OF HEMATITE RAW MATERIALS AT THE KRYVOROZHSK MINING AND PROCESSING PLANT OF OXIDIZED ORE ON TECHNOLOGY OF DIRECT RECOVERY ITmk3

2018 ◽  
pp. 32-37
Author(s):  
P.I. Loboda ◽  
Younes Razaz ◽  
S. Grishchenko
Keyword(s):  
Magnetic Properties ◽  
Cast Iron ◽  
Iron Content ◽  
Raw Materials ◽  
Direct Reduction ◽  
Processing Plant ◽  
High Iron Content ◽  
High Iron ◽  
Direct Restoration ◽  
First Time

Purpose. To substantiate the efficiency of processing hematite raw materials at the Krivoy Rog Mining and Processing Plant of Oxidized Ores using the direct reduction technology itmk3®. Metodology. Analysis of the results of the itmk3® direct restoration technology developed by Kobe Steel Ltd., Japan and Hares Engineering GmbX, Austria, with a view to using it to process Krivbass hematite ores into granulated iron (so-called “nuggets”). Findings. The involvement in the production of hematite ores (oxidized quartzite) of Krivbass with high iron content, but with low magnetic properties for their processing into granular cast iron is grounded. Originality. The use of itmk3® direct reduction technology from Kobe Steel Ltd., Japan and Hares Engineering GmbH, Austria for the processing of Krivbass hematite ores into granular cast iron is justified for the first time. Practical value. The efficiency of the use of hematite ores (oxidized quartzite) has been substantiated, which can significantly reduce the costs in the mining cycle for the economical production of metallurgical products.

Method for drawing forest maps by means of an office computer

1970 ◽  
Vol 22 ◽  
Author(s):  
R. Goossens ◽  
J. De Schuyter
Keyword(s):  
Classical Method ◽  
Similar Form ◽  
Code Number ◽  
Growing Stock ◽  
Forest Maps ◽  
Set Up ◽  
The Right ◽  
Computer Unit ◽  
Fixed Network

In  this article, we tried to perform the drawing of forest maps, together with  the calculations involved, automatically by means of relatively simple aids.      The computer unit used is an office computer Olivetti P203. As an example  the growing stock (in m3/ha) was mapped out. The proper inventory in the field is done  according to the classical method by means of a previously fixed network of  squares (70,7 m x 70,7 m), which corresponds to two plots a ha.     The quantity which is measured and mapped out (in this case the growing  stock) is in a similar form not very useful in mapping. Therefore a division  in classes (Ku) numbered from 0 to 9, is set up. An appropriate program  calculates for a certain number of points within this elementary square, to which  class they have to be assigned, whereas the typewriter prints the  corresponding code number on the right place.     Fig. 1 and the formulas (1), (2) and (3) represent the principle o[ the  calculations while fig. 2A and B reproduce the results printed by the  typewriter for a elementary square of respective 1” X 1” and 2” X 2”. The  whole of similar network of squares eventually results in a basical document,  on which the existing forest map with an adapted scale is laid (see appendix  3) and the class limits are drawn.     If desirable, the scale may be adapted when the forest map under discussion  is definitely reproduced.

OPTIMIZATION OF EXPERIMENTAL PLANNING IN PROCESSING PLANT RAW MATERIALS

2021 ◽  
pp. 176-184
Author(s):  
Irina V. Sobol ◽  
Anastasia V. Kazakevich ◽  
Lyudmila V. Donchenko ◽  
Vladimir G. Griguleckij
Keyword(s):  
Raw Materials ◽  
Processing Plant ◽  
Plant Raw Materials ◽  
Experimental Planning

The Echigo-Tsumari Triennale and Satoyama (越後妻有トリエンナーレと里山)

2017 ◽  
Vol 5 (1) ◽  
pp. 31-45
Author(s):  
Amiko Matsuo ◽  
亜実子 松尾
Keyword(s):  
Social Practice ◽  
Economic Recession ◽  
Place Identity ◽  
Art Practices ◽  
Social Art ◽  
Active Pursuit ◽  
History Of ◽  
Major Producer ◽  
Set Up ◽  
Regional Histories

Fram Kitagawa is a major producer of contemporary art festivals in Japan. His optimistic vision connects artists, farmers, rural residents, and researchers to redefine the notion of local identity and place. Doing so revitalizes rural Japanese communities by increasing awareness through the restorative process of satoyama, which allows for connections between the history of the landscape, aesthetics, and local socio-economic issues. Kitagawa’s active pursuit of dialogue within the multiple narratives of local and regional histories makes the Echigo-Tsumari Art Triennali precursors to other expansive social art practices. More importantly, the restorative efforts of Kitagawa and the Echigo-Tsumari Art Triennale endure despite the economic recession, the Chuetsu earthquake, polarization of the urban and rural, and the Tohoku devastation on 3/11. This persistence depends upon linking artistic practices with social development rooted in place-making and place-identity. Increased awareness by Western artists might set up Echigo-Tsumari as a model for transformative art elsewhere on the scale of Kitagawa’s vision. The model could inspire, for example, more work in the vein of Theaster Gates, the American ceramic and social practice installation artists, who argues that artists should do more than just make objects. Rather, we should “make the thing that makes the thing,” and as Gates asserts, we should transform culture. 北川フラムは、日本における現代アート・フェスティバルの重要なプロデューサーの一人である。彼の前向きな考え方は、アーティスト、農民、地方の住民、そして地域のアイデンティティや場所の概念の再定義を行う研究者を結びつけている。この結びつきは里山の回復プロセスに対する人々の気づきを促し、日本の地方コミュニテイを活性化している。さらにこの結びつきによって、風景の歴史、美学、地域の社会経済問題を結びつけることも可能となっている。北川が地元や地方の歴史に関する多様な物語と活発に対話しつづけてきたことによって、越後妻有トリエンナーレは他の社会的アート実践のさきがけとなった。より重要なのは、経済的不況、中越地震、都市と地方の二極化、そして３１１の東日本大震災の発生にもかかわらず、北川と越後妻有トリエンナーレが活力を失わずに努力を続けてきたということである。この努力の継続は、場所づくりや場所のアイデンティティに根付いた社会的発展とアートによる実践が結びついていることに依っている。西洋のアーティストたちから、ますますこのトリエンナーレに注目があつまるようになっている。そのため、北川の考えるような規模の場所でということであれば、世界の別のどこかで実践される変革的アートのモデルとして越後妻有が機能することになるだろう。陶芸や社会実践的インスタレーションを製作するアメリカのアーティストであるスイースター・ゲイツは、アーティストはただ作品を作る以上のことをすべきだと主張する。越後妻有のようなアートのモデルは、この彼の考えに連なるような作品を生み出しうるだろう。われわれはゲイツの主張するように、「モノをつくるモノをつくる」べきである。つまり、われわれは文化を変革すべきなのである。 This article is in Japanese.

scholarly journals Analysis of factors affecting the market capitalization of the largest oil companies in Russia

2021 ◽  
Vol 1 ◽  
pp. 142-149
Author(s):  
Vladimir Nikolaevich PODKORYTOV ◽  
◽  
Lyudmila Anatol’evna MOCHALOVA ◽  
Keyword(s):  
Raw Materials ◽  
Correlation Coefficients ◽  
Equity Capital ◽  
Linear Regression Models ◽  
Factors Affecting ◽  
Market Capitalization ◽  
Oil Companies ◽  
Operating Profit ◽  
Cost Factors ◽  
Oil Company

Relevance. The stock exchange prices of shares reflect the view from the market position of the value of a particular public company: the market capitalization of the issuing company acts as a value indicator. The volatility of stock prices, on the other hand, determines the dynamics of market capitalization. In this regard, the problem of market capitalization management and its forecasting in the future becomes urgent. Taking into account the raw materials orientation of the Russian economy, enterprises of the mineral raw materials complex are of particular interest from the point of view of value management. The purpose of the study is to identify the most significant external and internal cost factors affecting the market capitalization of the largest oil companies in Russia, and to calculate promising cost management models. Research methods. In the process of studying value factors on the basis of retrospective statistical data and methods of correlation analysis were used. Results. The correlation analysis of the following variables was carried out: price per 1 share of an oil company observed on the Moscow Exchange; the price of Brent crude oil; revenues from sales; operating profit; net profit; company assets; equity capital of the company. Based on the analysis, the factors with the highest correlation coefficients were selected in relation to the dependent variable “price per 1 share of an oil company observed on the Moscow Exchange”, as well as with relatively low values of pair correlation coefficients directly with each other in order to avoid the effect of multicollinearity. The variables included in the model are: the price of Brent crude; revenues from sales; operating profit; company assets; equity capital of the company. Linear regression models have been constructed for PAO Rosneft, PAO Lukoil, and PAO Tatneft. Conclusions. A detailed analysis of the obtained linear regression models taking into account the correlation coefficients, t-statistics, significance level values (P-values), determination coefficients R2, calculated values of F-criteria showed generally conflicting results. The most significant models are single-factor price models, in which sales revenue acts as an independent variable. Other models require their refinement through careful analysis and more observations. It is planned to continue research and search for cost factors that affect the change in market capitalization not only for oil companies but for other enterprises of the mineral resource complex as well.

scholarly journals Reproducibility of suppression of Pythium wilt of cucumber by compost

2014 ◽  
Vol 23 (3) ◽  
pp. 236-245 ◽  
Author(s):  
Mauritz Vilhelm Vestberg ◽  
Sanna Kukkonen ◽  
Päivi Parikka ◽  
Dan Yu ◽  
Martin Romantschuk
Keyword(s):  
Raw Materials ◽  
Dry Weight ◽  
Shoot Height ◽  
Bacterial Diseases ◽  
Sphagnum Peat ◽  
Shoot Dry Weight ◽  
Suppressive Capacity ◽  
The Difference ◽  
Set Up

There is increasing global interest in using compost to suppress soil-borne fungal and bacterial diseases and nematodes. We studied the reproducibility of compost suppressive capacity (SC) against Pythium wilt of cucumber using nine composts produced by the same composting plant in 2008 and 2009. A bioassay was set up in a greenhouse using cucumber inoculated with two strains of Pythium. The composts were used as 20% mixtures (v:v) of a basic steam-sterilized light Sphagnum peat and sand (3:1, v:v). Shoot height was measured weekly during the 5-week experiment. At harvest, the SC was calculated as the % difference in shoot dry weight (DW) between non-inoculated and inoculated cucumbers. The SC was not affected by year of production (2008 or 2009), indicating reproducibility of SC when the raw materials and the composting method are not changed. Differences in shoot height were not as pronounced as those for shoot DW. The results were encouraging, but further studies are still needed for producing compost with guaranteed suppressiveness properties.

scholarly journals EXPLOITATION OF AGRI-FOOD SOLID WASTES FOR RECOVERY OF HIGH ADDED-VALUE COMPOUNDS: THE CASE OF GRAPE POMACE AND ONION PEELS

1970 ◽  
Vol 62 ◽  
Author(s):  
Papagiotis Kefalas ◽  
D. P. Makris
Keyword(s):  
Raw Materials ◽  
Reducing Power ◽  
Grape Pomace ◽  
Solid Wastes ◽  
Added Value ◽  
Waste Materials ◽  
Processing Plant ◽  
Food Ingredients ◽  
Pigment Extraction ◽  
Red Grape

Large quantities of both liquid and solid wastes are produced annually by the food processing industry. These waste materials contain principally biodegradable organic matter and their disposal creates serious environmental problems. The waste loads at the processing plant can be significantly reduced through the use of new or modified processing methods or through in-plant treatment and reuse and a variety of processes are being developed towards this direction, aiming at converting the waste materials into bio-fuels, food ingredients and other added-value bio-products. The scope of the present study was an examination on the possibilities of using non-toxic, cheap and readily available means of recovering phenolics from red pomace and onion peels. On such a basis, the solvent systems tested were composed of ethanol, a bio-solvent that can be obtained after fermentation of the sugar-containing raw materials and distillation. In the case of red grape pomace, simple media composed of 60% ethanol were shown to be ideal for recovery of extracts with increased polyphenol concentration and antiradical activity. Higher ethanol content (90%), however, was more effective for pigment extraction. For onion peels, extracts with high flavonol recovery and a reducing power were obtained with a similar medium (60% ethanol/ 0.1% HCl), while optimisation of the extraction conditions with regard to temperature and time, afforded higher yield and more active extracts.

scholarly journals Heavy Metals and Microelements in the System "Soil – Plant – Product of Plant Processing"

2021 ◽  
pp. 13-18
Author(s):  
М.А. Сенченко ◽  
М.В. Степанова
Keyword(s):  
Heavy Metals ◽  
Raw Materials ◽  
Organic Production ◽  
Processing Plant ◽  
Migration Ability ◽  
Oil Refineries ◽  
Plant Raw Materials ◽  
Additional Operation ◽  
Plant Product ◽  
Plant Processing

В России при производстве национальных напитков и продуктов питания используют сырьё растительного происхождения. Многие участки для возделываемых культур расположены вблизи урбанизированных районов, нефтеперерабатывающих и машиностроительных заводов. Исследования посвящены определению тяжёлых металлов в почвах урбанизированных и сельских районов Ярославской области и проведены в 2019–2020 гг. Целью данного исследования является определение содержания некоторых микроэлементов и тяжёлых металлов в почве, ревене и продукте его переработки – квасе, произведённом разными способами (рассматривались 2 технологии: технология с дополнительной операцией «вымачивание стеблей ревеня» и «настаивание стеблей ревеня и дополнительных ингредиентов» и технология с дополнительной операцией «варка стеблей ревеня и дополнительных ингредиентов»). При исследовании загрязнения почвы микроэлементами и тяжёлыми металлами на всех территориях превышения предельно допустимых концентраций не выявлено. Установлено, что по величине среднего содержания в водной вытяжке почвы исследуемые элементы на всех рассмотренных территориях региона образуют следующий убывающий ряд: железо > свинец > цинк > медь > мышьяк > кадмий. Более высокие концентрации цинка, железа, кадмия, свинца и мышьяка выявлены в урбанизированной территории, а меди – в сельской территории. Анализ миграционной способности элементов в системе «почва – растение – продукция растительного происхождения» показал наличие плохой миграционной способности для цинка и железа. Использование растительного сырья, произведённого по технологии органического производства и по разработанной технологии переработки растительного сырья, способствовало наименьшему воздействию на его составные части, увеличению содержания макро- и микроэлементов. При этом содержание токсичных элементов остаётся в пределах действующих нормативных документов. Технология, включающая дополнительную операцию «варка», обеспечила наибольшую экстракцию макро- и микроэлементов из ревеня в квас. In Russia, raw materials of plant origin are used in the production of national beverages and food products. Many areas for cultivated crops are located near urbanized areas, oil refineries and mechanical engineering plants. Researches are devoted to the definition of heavy metals in soils of urbanized and rural areas of the Yaroslavl region and were carried out in 2019–2020. The purpose of this study is to determine the content of some microelements and heavy metals in soil, rhubarb and its processing product – kvass produced in various ways (2 technologies were considered: technology with an additional operation "soaking rhubarb stems" and "infusing rhubarb stems and additional ingredients" and technology with an additional operation "boiling rhubarb stems and additional ingredients"). When investigating soil contamination with microelements and heavy metals in all territories, no excess of maximum permissible concentrations was found. It was established that in terms of the average content in the water extract of the soil, the examined elements in all the considered territories of the region form the following decreasing series: iron > lead > zinc > copper > arsenic > cadmium. Higher concentrations of zinc, iron, cadmium, lead and arsenic were found in urbanized territory, and copper in rural territory. An analysis of the migration ability of elements in the system "soil – plant – product of plant processing" showed the presence of poor migration ability for zinc and iron. The use of plant raw materials produced according to the organic production technology and the developed technology for processing plant raw materials contributed to the least impact on its components, an increase in the content of macro- and microelements. At the same time, the content of toxic elements remains within the limits of existing regulatory documents. The technology, including an additional "boiling" operation, ensured the greatest extraction of macro- and microelements from rhubarb to kvass.

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