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Hydrolysis of high concentration lignocellulose suspensions with a cumulative feeding strategy: rheometry and morphogranulometry

Hydrolysis of high concentration lignocellulose suspensions with a cumulative feeding strategy: rheometry and morphogranulometry

This is an author-deposited version published in : http://oatao.univ-toulouse.fr/ Eprints ID : 13539 To cite this version : Nguyen, Tien-Cuong and Anne-Archard, Dominique and Coma, Véronique and Cameleyre, Xavier and Lombard, Eric and To, Kim Anh and Le, Tuan and Fillaudeau, Luc Hydrolysis of high concentration lignocellulose suspensions with a cumulative feeding strategy: rheometry and morphogranulometry. (2014) In: 10th European Symposium on Biochemical Engineering Sciences and 6th International Forum on Industrial Bioprocesses, 7 September 2014 - 10 September 2014 (Lille, France).
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Feeding strategy of Lacaune dairy sheep: dairy ewes fed in groups according to their milk yield

Feeding strategy of Lacaune dairy sheep: dairy ewes fed in groups according to their milk yield

Feeding strategy of Lacaune dairy sheep: dairy ewes fed in groups according to their milk yield. Philippe Hassoun, Alain Hardy, Anne Tesnière, Jean Legarto, Catherine de Boissieu[r]

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Using a combined oxygen-supply and substrate-feeding strategy to improve 2,3-butanediol production by metabolically engineered Klebsiella oxytoca KMS005

Using a combined oxygen-supply and substrate-feeding strategy to improve 2,3-butanediol production by metabolically engineered Klebsiella oxytoca KMS005

Sitha Chan, a,b,c Sunthorn Kanchanatawee, a Sirima Suvarnakuta Jantama, c Kaemwich Jantama, a* Claire Joannis-Cassan b and Patricia Taillandier b* Abstract BACKGROUND: There is much demand for and extensive application for 2,3-butanediol (2,3-BD) in various fields, and micro-aerobic and substrate-feeding conditions greatly affect microbial growth and production. The theoretical maximum of 2,3-BD fermentative yield has rarely been reported. Therefore, our study aimed to develop an efficient combined oxygen-supply and substrate-feeding strategy to improve 2,3-BD production yield in metabolically engineered Klebsiella oxytoca KMS005. RESULTS: The optimized oxygen consumption for 2,3-BD production by strain KMS005 was demonstrated at 9.2 g for 1 L working volume corresponding to KLa of 25.2 h −1 . During fed-batch, a glucose feeding rate of 2 g h −1 starting at the end of the growth
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Using a combined oxygen-supply and substrate-feeding strategy to improve 2,3-butanediol production by metabolically engineered Klebsiella oxytoca KMS005

Using a combined oxygen-supply and substrate-feeding strategy to improve 2,3-butanediol production by metabolically engineered Klebsiella oxytoca KMS005

Sitha Chan, a,b,c Sunthorn Kanchanatawee, a Sirima Suvarnakuta Jantama, c Kaemwich Jantama, a* Claire Joannis-Cassan b and Patricia Taillandier b* Abstract BACKGROUND: There is much demand for and extensive application for 2,3-butanediol (2,3-BD) in various fields, and micro-aerobic and substrate-feeding conditions greatly affect microbial growth and production. The theoretical maximum of 2,3-BD fermentative yield has rarely been reported. Therefore, our study aimed to develop an efficient combined oxygen-supply and substrate-feeding strategy to improve 2,3-BD production yield in metabolically engineered Klebsiella oxytoca KMS005. RESULTS: The optimized oxygen consumption for 2,3-BD production by strain KMS005 was demonstrated at 9.2 g for 1 L working volume corresponding to KLa of 25.2 h −1 . During fed-batch, a glucose feeding rate of 2 g h −1 starting at the end of the growth
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Optimal feeding strategy for the minimal time problem of a fed-batch bioreactor with mortality rate

Optimal feeding strategy for the minimal time problem of a fed-batch bioreactor with mortality rate

3 Universit´e Montpellier 2, Case courrier 051, 34095 Montpellier cedex 5, France SUMMARY This paper is devoted to the study of an optimal control problem for a fed-batch bioreactor with one species and one substrate. Our objective is to obtain an optimal feedback control, steering the system in minimal time to a given target defined by conditions on the substrate concentration and the volume of the reactor. The novelty in this work is that a mortality rate for the biomass and hydrolysis of dead biomass are included in the model. The optimal synthesis (optimal feeding strategy) has been obtained by Moreno (1999) when both mortality and hydrolysis are considered negligible. Whenever the model includes these effects, the total mass of the system is no longer conserved, and it is not possible to reduce the dimension of the system. Thanks to the Pontryagin maximum principle and the Hamilton-Jacobi equation we overcome this difficulty and provide an optimal synthesis of the problem in the impulsive framework. Copyright c 2010 John Wiley & Sons, Ltd.
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Diversification and functional evolution of reef fish feeding guilds

Diversification and functional evolution of reef fish feeding guilds

Guilds of generalist species hold future diversity. Lineages of wrasses and damselfishes with a generalist feeding strategy show equal or higher rates of net diversification than others (Fig. 3 and Table S5). Accordingly, the generalist carnivore guild in Labridae exhibits the highest functional and species richness. These characteristics exhibited by the generalist carnivore guild could have also been driven by biogeography as it includes spe- cies from all marine tropical and temperate regions, whereas specialist guilds are not ubiquitously distributed (e.g. tiny biters are absent from the Atlantic Ocean (Cowman et al. 2017)). This difference with other guilds also suggests that the generalist car- nivorous feeding mode in wrasses had certainly facilitated diversification along various ecological axes such as fine-scale habitat partitioning. In Pomacentridae, the intermediate trophic guild shows the lowest species richness, which is proba- bly due to a competition with specialist feeding guilds and less efficient use of dietary resources. Nevertheless, this generalist feeding guild displays low rates of extinction (Table S4), imply- ing that this feeding mode is a strategy for surviving fluctua- tions in resource availability (Ingram et al. 2009) and that generalist lineages may generate future diversity. In light of these findings and considering that dietary specialised descen- dants emerged from generalised trophic groups, we argue that the generalist guilds of damselfishes and wrasses are not evolu- tionary ‘dead-ends’ (as defined in Eldredge 1982). This result contrasts with studies on mammals (Price et al. 2012) and birds (Burin et al. 2016) that designated a generalist dietary habit (omnivory) as a macroevolutionary sink. The dissimilar out- comes between our research and theirs might be attributed to the types of variables used to describe the trophic strategies. Instead of scoring food types (Price et al. 2012; Burin et al. 2016), we built our fish feeding categories on functional demands associated with the capture of prey in the benthic and/ or pelagic compartments. The generalist feeding guilds of both wrasses and damselfishes have more diverse morphological attributes than others (Bellwood et al. 2006; Olivier et al. 2017), and our trophic categorisation probably translates to phenotypic traits linked to versatility. According to the predic- tions of Bellwood et al. (2006), we suggest that such a trophic versatility may sustain high rates of lineage diversification by (1) relaxing interspecific competition and facilitating local co- occurrence of ecologically similar species and (2) enhancing reef colonisation ability.
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Prototypes of precision feeding systems gestating and lactating sows

Prototypes of precision feeding systems gestating and lactating sows

Rationale: The precision feeding system is based on the development of a decision support system (DSS) connected to an automated feeder for feed distribution. This DSS informs the feeder with the amount of each of the different diets to be fed to a given sow over a given day or period, generally two diets differing in their nutrient content. To take that decision, the DSS uses the flow of information relative to the individual sow, her housing conditions and the general feeding strategy in the farm. This information may be provided by sensors and or by the farmer and is stored in a herd database. From the available information, which may vary according to the equipment available on the farm and the data management system, the DSS builds the "best guess" decision to be transmitted to the automated feeder. This involves two steps: (i) the determination of the energy, amino acid, and mineral requirements and (ii) the determination of the amount and composition of the ration to be fed. This ration is prepared by mixing (generally two) different diets available in the automated feeder.
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Breast Feeding and Melatonin: Implications for Improving
Perinatal Health

Breast Feeding and Melatonin: Implications for Improving Perinatal Health

The utility of melatonin in early infancy, however, may be especially relevant in premature infants. It is common to add protein, fat and carbohydrate fortifiers to breastmilk for premature infants [75]. Given that melatonin is highly produced by the placenta [35], it is highly likely that premature infants may gain from the addition of melatonin to all feeds, and not solely to night-time feeds. There is a growing utilization of banked human donor milk for premature babies, which is usually pasteurized by the Holder method [72]. As to whether such milk should be fortified with melatonin, as mentioned above, either as a whole or in a sub-sample solely for night-time feeding has still to be investigated. It should also be noted that very low birthweight infants often have little access to breastfeeding [76] and may also benefit from the addition of melatonin to human donor milk or formula feed, as would be the case in situations where the mother is unable to breast feed.
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Designing a manufacturing strategy

Designing a manufacturing strategy

Within a business unit, the functional manufacturing managers will usually have significant control over production planning and scheduling, materials management, and some o[r]

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Collusive dominant-strategy truthfulness

Collusive dominant-strategy truthfulness

Remarks • Novelty. The basic idea of our solution consists of enlarging the strategy space so as to include coalition information. With this idea the mechanism becomes quite straightforward: It asks each bidder to report not only his own true valuation but also the coalition he belongs to. Truthfully reporting the coalition structure is made dominant by using proper cross checks and punishments. Once the truthful coalition structure has been elicited, the mechanism then runs a Vickrey auction among coalitions as if each coalition were a single bidder in the standard Vickrey auction.

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Collusive Dominant-Strategy Truthfulness

Collusive Dominant-Strategy Truthfulness

Our approach meaningfully bypasses prior impossibility proofs. 1 Introduction The presence of collusion and wrong beliefs can clearly frustrate the aims of a mechanism designer. Beliefs do not come into play in a dominant-strategy mechanism, but collusion might continue to be a problem. Indeed, any equilibrium, including a dominant-strategy one, only guarantees that no individual player has any incentive to deviate from his envisaged strategy. However, two or more players may have plenty of incentive to jointly deviate from their equilibrium strategies.

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Strategy-proof tie-breaking

Strategy-proof tie-breaking

Abdulkadiroglu et al. (2009) show that no strategy-proof mechanism can Pareto dominate the ADA resulting from some exogenous tie-breaking rule for all profiles of agents’ preferences. We characterize the set of priority structures within the class of IB environments that are solvable by exogenous tie-breaking and show that it is a strict subset of the set of all solvable priority structures. In particular, there exist priority structures for which our proposed procedure is guaranteed to yield a constrained efficient matching, even though there is no exogenous tie- breaking rule which guarantees constrained efficiency of the ADA. Finally, Azevedo and Leshno (2010) show by example that equilibrium outcomes induced by the stable improvement cycles procedure may be Pareto dominated by the outcome of the ADA resulting from fixed tie- breaking. It follows from our results that the priority structure in their example is unsolvable. From the literature on priority-based allocation problems with strict priority orders the most relevant paper Ergin (2002). He characterizes the set of strict priority structures for which stability is compatible with efficiency by means of an acyclicity condition. 6 The main
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Sampling strategy and stratification

Sampling strategy and stratification

Sampling strategy Selecting trees on the field It is also preferable to avoid particular trees (top broken, sinuous shapes, etc…) EXCEPT if these trees represent a big proportion of the stand, or if the objective is to quantify these defects

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Spiroplasma affects host aphid proteomics feeding on two nutritional resources

Spiroplasma affects host aphid proteomics feeding on two nutritional resources

Discussion Comparative proteomic analysis between Spiroplasma-free (Ac-B) and Spiroplasma-infected (Ac-BS) sister iso- lines of A. citricidus on two host plants indicated Spiroplasma infection affects the host proteome, especially the abundance of proteins belonging to protein-protein interaction, cell function and energy metabolism categories. Changes in host proteome due to Spiroplasma infection were quite different in aphids feeding on different host plants - orange jasmine or sweet orange, suggesting that some of the differences observed between host plants for infected or uninfected aphids might be due to the interaction of the host plant and the infection status of the aphid. Due to a number of issues with aphids survival after microinjection and consequently the amount of protein obtained, we could not perform gels that would allow comparing differences in proteins abundances according to the host plant for a given infection status. Our data allows only comparisons between infection status for a given host plant. The huge differences in the aphid proteomics when feeding on sweet orange and orange jasmine certainly require additional studies to clarify the role of the host plants on the proteomics of A. citricidus.
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Strategy-proof preference aggregation

Strategy-proof preference aggregation

the resulting aggregation rules are also strategy-proof; this is evident because the proof of Proposition 2 utilizes a fixed N . Status-quo rules can be characterized by the properties of efficiency and population monotonicity. We call a rule population-monotonic if the departure of a subset of agents induces a new social ordering that all the remaining agents find at least as good as the original ordering (according to the prudent extension of their preferences over alterna- tives). Since these prudent extensions are incomplete relations, population monotonicity is a strong requirement.
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Design and analysis of a bulk note feeding device

Design and analysis of a bulk note feeding device

Because the prototype was designed to be flexible, it is more complex than it ultimately would be. For example, rather than having two variable speed motors, which[r]

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Environmental seasonality drives digital populations towards stable cross-feeding

Environmental seasonality drives digital populations towards stable cross-feeding

Introduction Metabolic cross-feeding interactions between microbial strains are common in nature, and emerge during evolu- tion experiments in the laboratory, even in homogeneous en- vironments providing a single carbon source (Rosenzweig et al., 1994; Rozen and Lenski, 2000). In sympatry, when the environment is well-mixed, the reasons why emerg- ing cross-feeding interactions may sometimes become sta- ble and lead to monophyletic genotypic clusters occupying specific niches – named ecotypes (Cohan, 2002) – remain unclear.

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Cambodia Report : Feeding China's Expanding Demand for Wood Pulp

Cambodia Report : Feeding China's Expanding Demand for Wood Pulp

aspect of business practices which is widespread in Asia. For this kind of business relationship, the first critical point is for the foreign potential investor to have friends in Cambodia or to get a strong personal recommendation from one friend for one Cambodian businessman. This replaces risk insurances. The second critical point is that the Cambodian businessman could act as a “local relationships specialist”, that is, knowing how to reduce the financial weight of local bribery, how to deal with the local administration in order to reduce the regulatory policy uncertainty, and how to smoothen the possible local conflicts. In this regard, strong businessmen with good relationships with the political structure of the country would become favourite partners for such a foreign potential investor. The third critical point is, for the foreign investor, to raise the funds. Eventually; the question of the technical feasibility of the project wouldn’t be a critical point, as long as it is not science-fiction. All the current pulp wood plantation projects in Cambodia follow this strategy.
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Malaria host manipulation increases probability of mosquitoes feeding on humans

Malaria host manipulation increases probability of mosquitoes feeding on humans

be transmitted, to feed when it is ready to be transmitted and to feed on the right type of host. What does this mean for our understanding of malaria transmission and epidemics? Vantaux et al. use a mathematical model, parameterised using data from this experiment, to highlight the consequences of this 24% increase in feeding on humans for P. falciparum transmission. They show that this increase raises the number of infectious bites humans receive from 4 (if sporozoite-infected mosquitoes had the same probability as uninfected mosquitoes) to 14 (an increase in 250%), for mosquitoes with a 15-day life-span, at ratios of 1:1 mosquitoes to humans. Longer mosquito life-spans and higher ratios of mosquitoes to humans further increases the number of infectious bites.
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Effects of Feeding Locally Grown Whole Barley on Broiler Performance

Effects of Feeding Locally Grown Whole Barley on Broiler Performance

During 8 weeks, the percentage mortality was not affected (P > 0.05) when feeding birds with hulled barley based diet supplemented with different levels in comparison to the control group. Similar findings were reported by [15]. In this investigation inclusion of hulled barley brought interesting results when compared with a commercial corn-soybean meal. However, compared to the other levels, feeding whole barley at 100% level of the diet slowed growth rate at all ages throughout the trial. Consequently, the use of barley as a sole grain in the ration is not practical. This is in agreement with finding of [16]. Barley is utilized to best advantage in poultry diets when consideration is given to the class of bird being fed and the desired level of [17].
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