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Tài liệu Manual on the Production and Use of Live Food for Aquaculture - Phần 1 pptx
... permission of the copyright owner Applications for such permission, with a statement of the purpose and extent of the reproduction, should be addressed to the Director, Information Division, Food and ... impact on the microbial populations in the associated culture medium and eventually in the fish/shrimp’s gut flora, and consequently on the health status and the digestive capability of the larva ... based on a number of criteria (Fig 1.5.) Most of the criteria as identified from the viewpoint of the larva have already been discussed above with the exception of the criterion ‘purity’ One should...
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Tài liệu Manual on the Production and Use of Live Food for Aquaculture - Phần 2 doc
... vary considerably according to the culture conditions For example the effect of the composition of the culture medium on the proximate composition of various species of micro-algae is demonstrated ... disadvantage is the need to prevent contamination during the initial inoculation and early growth period Because the density of the desired phytoplankton is low and the concentration of nutrients ... growth depends upon the species and culture conditions of the algae making up the diet, and the bivalve culture conditions Under practical hatchery conditions, high food rations are often fed, which...
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Tài liệu Manual on the Production and Use of Live Food for Aquaculture - Phần 3 ppt
... tract of the rotifers are killed as well The concentration of the disinfection products differs according to their toxicity and the initial condition of the rotifers Orientating concentrations ... generations of offspring before they eventually die The reproduction activity of Brachionus depends on the temperature of the environment as illustrated in Table 3.1 The life cycle of Brachionus ... not only has a regulating effect on the microflora but also increases the production rate of the rotifers For stable rotifer cultures, the microflora as well as the physiological condition of the...
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Tài liệu Manual on the Production and Use of Live Food for Aquaculture - Phần 4 pptx
... America and seemed to be unlimited However, with the expansion of aquaculture production in the 1970’s, the demand for Artemia cysts soon exceeded the offer and prices rose exponentially, turning Artemia ... salinity is the common feature determining the presence of Artemia, the impact of other parameters (temperature, primary food production, etc.) may at most affect the abundance of the population and ... parthenogenetic Artemia Age at first reproduction is a key factor determining the population growth rate, and the rate of colonisation of new environments with limited nutrient resources Consequently,...
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Tài liệu Manual on the Production and Use of Live Food for Aquaculture - Phần 5 docx
... fast start and consequent development of the population shortly after the re-establishment of favorable environmental conditions This allows effective colonization in temporal biotopes For the ... release over 80% of their cellular water, and upon interruption of the aeration, the now coffeebean shaped decapsulated cysts settle out After harvesting of these cysts on a mesh screen they should ... reduced by disinfection of the cysts prior to hatching incubation and/ or by the addition of a few drops of a non-toxic antifoaming agent (e.g silicone antifoam) The temperature of the seawater is...
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Tài liệu Manual on the Production and Use of Live Food for Aquaculture - Phần 6 docx
... understood and may be satisfied through the consumption of seawater, the main concern regarding the mineral composition of Artemia is whether they meet the requirements of fish or crustacean larvae reared ... improving the lipid profile of deficient Artemia strains (see further) Commercial provisions of Artemia cysts containing high EPA levels are limited and consequently, these cysts are very expensive Therefore, ... (use of cover) and focusing a light source on the transparent conical part of the bottom Nauplii should not be allowed to settle for too long (i.e., maximum to 10 min.) in the point of the conical...
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Tài liệu Manual on the Production and Use of Live Food for Aquaculture - Phần 7 pptx
... and/ or assimilation: including the quality and quantity of the food offered, the developmental stage of the larvae, and the culture conditions More detailed information concerning these processes ... down the DHA as is the case in nauplii There is however, an alternative method that takes profit of the specific aspects of ongrown Artemia: instead of adding the enrichment emulsion at the end of ... Enrichment of ongrown Artemia 4.4.2.8 Control of infections 4.4.2.9 Harvesting and processing techniques 4.4.2.10 Production figures and production costs 4.4.2.1 Advantages of tank production and tank...
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Tài liệu Manual on the Production and Use of Live Food for Aquaculture - Phần 8 pptx
... analysis of the algae samples is recommended Algae composition does not only influence growth and reproduction of the Artemia, but also has an effect on the nutritional value of the biomass and the ... accumulates on the pond bottom, they should only be used for a limited period of time Recommended levels of organic manure are 0.5 to 1.25 ton.ha-1 at the start of the production season with dressings of ... evaluation curves Apart from population composition, the reproductive status of the females can also be used as an indicator for the health status of the Artemia population Large broods, and short...
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Tài liệu Manual on the Production and Use of Live Food for Aquaculture - Phần 9 pptx
... of the plankton net may be fixed to the pond gates The amount of zooplankton collected depends on the zooplankton concentration in the water flowing out of the reservoir and on the volume of the ... of the net the more effective and rapid the filtration Hence, the upper limit of the dimensions of the nets depends on the ease of handling rather than anything else The effectiveness of filtering ... transport the harvested zooplankton in 50 l containers Under these conditions the survival of the zooplankton depends on the amount of oxygen dissolved in the remaining water At a concentration of 100...
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Tài liệu Manual on the Production and Use of Live Food for Aquaculture - Phần 10 pptx
... population after unfavourable seasonal conditions 6.1.2 Nutritional value of Daphnia The nutritional value of Daphnia depends strongly on the chemical composition of their food source However, since ... also the production and use of live food organisms as feed for the developing larvae The present manual reviews and summarizes the latest developments concerning the production and use of the ... particles from the water The efficiency of the filter allows even the uptake of bacteria (approx 1µm) In a study on the food quality of freshwater phytoplankton for the production of cladocerans,...
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Tài liệu MIT Joint Program on the Science and Policy of Global Change: Effects of Air Pollution Control on Climate pdf
... to consider carefully the connections between the chemistry of the atmosphere and climate These connections are complex and their nonlinearity is exemplified by the fact that concentrations of ... reduce the warming induced by the capping of SOx Note that these climate calculations in Figure omit the cooling effects of the CO2 reductions caused by the lessening of the inhibition of the land ... chemistry and climate model indicate multiple, regionally variable and partially-offsetting, effects of BC on absorption and reflection of sunlight, reflectivity of clouds, and the strength of lower...
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Tài liệu CONVENTION ON THE PROTECTION AND USE OF TRANSBOUNDARY WATERCOURSES AND INTERNATIONAL LAKES doc
... substances, on the one hand, and the potential transboundary impact, on the other hand; (b) The polluter-pays principle, by virtue of which costs of pollution prevention, control and reduction measures ... of responsibility and liability Article PROTECTION OF INFORMATION The provisions of this Convention shall not affect the rights or the obligations of Parties in accordance with their national legal ... INSTITUTIONAL AND FINAL PROVISIONS Article 17 MEETING OF PARTIES The first meeting of the Parties shall be convened no later than one year after the date of the entry into force of this Convention Thereafter,...
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Tài liệu Cleaner Water in China? The Implications of the Amendments to China’s Law on the Prevention and Control of Water Pollution pptx
... national standards for environmental quality” and “national standards for the discharge of pollutants” as well as a monitoring system.32 B The Law on Prevention and Control of Water Pollution and ... protection.35 In addition to the LPCWP, polluting industries are subject to a variety of rules and regulations Nationally, these include the Implementing Rules on the Law on the Prevention and Control ... waters”), with Law on Prevention and Control of Water Pollution art (P.R.C.) 36 Implementing Rules on the Law on Prevention and Control of Water Pollution (promulgated by the State Council, Mar...
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Tài liệu Study on the Development and Marketing of Non-Market Forest Products and Services ppt
... the state -of the- art for the valuation and compensation for non-market forest goods and services This study is financed by the European Commission and is part of the implementation of the EU Forest ... regulations, etc.) analysis/evaluation: o Outcomes in relation to the objectives of the innovation o Role of the innovation in the overall economic strategy of the organisation (e.g specialisation, ... Annex 12 The concept of economic value Economic valuation of ecosystem goods and services is based on the concept of willingness to pay, which is a fundamental concept of welfare economics and is...
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Report of the Special Rapporteur on the promotion and protection of the right to freedom of opinion and expression, Frank La Rue* ppt
... pornography on the Internet with the right to freedom of expression in the context of discussions on the proposal for a directive of the European Parliament and of the Council on combating the sexual ... Science Monitor, July 2003 Decision 2009-580, Act furthering the diffusion and protection of creation on the Internet “732/2009, Decree of the Ministry of Transport and Communications on the minimum ... E/CN.4/2002/75; and A/HRC/4/27 See for example article 3(c) of the Convention on the Prevention and Punishment of the Crime of Genocide See for example article 20, paragraph 2, of the International Covenant...
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Perspectives of Chief Ethics and Compliance Officers on the Detection and Prevention of Corporate Misdeeds ppt
... with some reflections on the regulation of corporate governance and compliance, on the impact of SOX, and on the tension between stronger regulatory controls for corporations and the performance ... Compliance, and Regulation: The CECO Perspective and Role.” Chapter Three of this document provides a summary of the major themes and topics of conversation in this session The final session of the conference ... sector and other parts of the economy It is in this context that RAND convened a March 5, 2009, conference entitled “Perspectives of Chief Ethics and Compliance Officers on the Detection and Prevention...
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From Use to Presence: On the Expressions and Aesthetics of Everyday Computational Things docx
... of artifacts Evaluation then turns into aesthetics: to understand the logic of an expression on the basis of understanding the material that builds the expression We may think of an expression ... as constituents of an interaction model and as constituents of an expression structure It is the expressions of these components that convey the meanings they have in the interaction model and ... questions: the existence versus the functionality of an artifact Further, there is a basic difference between the expressions of an artifact and what it expresses in terms of being a part of someone’s...
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Báo cáo khoa học: "On the Evaluation and Comparison of Taggers: the Effect of Noise in Testing Corpora." doc
... paid little attention and are more important than what they seem to be Some of the issues that should be further considered are: The effect of noise on unambiguous words; the reasonable intervals ... combinations will be equally likely In addition, the bounds for the values of t, u and p are closely related to the similarities between the training and test corpora T h a t is, if the training and ... extracted from the same corpus, they will probably contain the same kind of errors in the same kind of situations This may cause the training procedure to learn the errors -especially if they are s...
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Guidelines on the diagnosis and management of acute pulmonary embolism pot
... into the intima and media of the pulmonary arteries This material may extend to the segmental and subsegmental branches of the pulmonary arteries Partial recanalization or total occlusion of the ... desaturation of mixed venous blood entering the pulmonary circulation Zones of reduced flow and zones of overflow of the capillary bed served by non-obstructed vessels result in ventilation– perfusion ... patients.67 Therefore, both the necessity of performing further tests and the nature of these tests in such patients is controversial Role of lower limb compression ultrasonography The role of lower...
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- on the evaluation and comparison of taggers
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