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Fatty acid profile of milk from goats fed diets with different levels of conserved and fresh forages
MANUELA RENNA PAOLO CORNALE CAROLA LUSSIANA VANDA MALFATTO ANTONIO MIMOSI LUCA M BATTAGLINI 《International Journal of Dairy Technology》2012,65(2):201-207
Aim of the study was to evaluate the effect of different proportions of hay and fresh grass in goats’ diet on milk fatty acid profile. Nine Camosciata goats were fed a fixed amount of concentrate (30% of total diet) and different percentages (40% vs 30%, 50% vs 20% and 60% vs 10%) of hay and fresh grass, respectively. Diminishing amounts of fresh grass percentages in the diet led to significant increases of lauric, myristic and palmitic acids (P ≤ 0.001) and to significant decreases of C18:1 t6‐11, rumenic and α‐linolenic acids (P ≤ 0.001) in milk, thus determining a worsening of the health value of milk fat. 相似文献
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J. P. DE LUCA R. J. EAGAN C. G. BERGERON 《Journal of the American Ceramic Society》1969,52(6):322-326
The growth of lead diborate and the viscosity of its melt were determined as a function of temperature. These data were used to examine several theories of the growth of crystals from the melt. The data were in good agreement with the theory of Tornbull and Cohen. At large under coolings the growth rate appeared to be controlled by the rate of diffusion across the crystal-melt interface, whereas at smaller undercoolings the growth rate appeared to be controlled by reaction at the crystal-melt interface. 相似文献
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LUCA SPALAZZI 《人工智能实验与理论杂志》2013,25(2):219-238
Recent research in planning is more and more focusing on planning systems working in ‘real world’ domains. These systems need to act in sense and represent the real world. Furthermore, no action, even if apparently simple, is guaranteed to succeed and, therefore, no planning can be ‘sound’ (with respect to the real world) without taking into account possible failures. This is mainly due to the intrinsic complexity of reality. A planning language is therefore required to represent explicitly failures, sensing tasks, planning tasks, and task combinations. In this paper, we propose a planning language (called ?) which addresses the above features. ? allows representing the basic planning activities, the control structures and the basic operations to deal with failures. As a consequence, a uniform representation is used to describe both acting/sensing in the external world and basic planning activities. In this paper, we give the syntax and the semantics of ?. Furthermore we also give some examples from an application (the project MAIA) which uses ? as planning language. 相似文献
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In this paper, we analyze the logical definitions of model-based diagnosis recently presented in the literature, and we propose a unified framework (based on the integration of abductive and consistency-based reasoning) in which most of such definitions can be captured. This allows us to single out the existence of a spectrum of alternatives in the logical definition of diagnosis. A lot of attention in the paper is devoted to analyzing the differences among the definitions in the spectrum. In particular, we show that the definitions can be compared on the basis of their restrictive-ness and we relate such a restrictiveness with the completeness of the model of the system to be diagnosed. Dans cet article, les auteurs analysent les définitions logiques de diagnostics basés sur un modèle dont il a été question récemment dans certains ouvrages. Ils proposent un cadre unifié (basé sur l'intégration du raisonnement abductif et du raisonnement basé sur la consistance) à l'interieur duquel la plupart de ces définitions peuvent ětre regroupées. Cette particularité permet de mettre en lumière l'existence d'un spectre d'alternatives dans la définition logique du diagnostic. Cet article accorde une attention toute particulière à l'analyse des différences entre les définitions du spectre. En outre, les auteurs démontrent que les définitions peuvent ětre compareées en fonction de leur caractère restrictif, qui est ensuite mis en relation avec la complétude du modèle du système faisant l'objet d'un diagnostic. 相似文献
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SILVIA SILIANI ALISSA MATTEI LUCA BENEVIERI INNOCENTI BRUNO ZANONI 《Journal of food quality》2006,29(4):431-441
Bitter taste of extra virgin olive oil is known to be affected by the phenolic composition. However, contribution of each individual phenol to this sensory note has not been clearly defined. The aims of this study were to verify whether there was a relationship between bitter sensation and phenolic compound concentration, to determine which compounds were involved in bitter taste and to evaluate quantitatively this correlation. Results confirmed that a positive correlation did exist between total phenolic amount and bitter intensity. Data processing showed that this correlation was significantly dependent upon a relationship between oleuropein aglycon (3,4‐DHPEA‐EA) and bitter intensity. An empirical exponential model was set up and validated. 相似文献
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Existing thermodynamic data for the Cr-N system were analyzed. High-temperature heat contents measured by Sato were reevaluated, and the heat capacity of Cr2 N was determined to be 15.05+6.58×10−3 T (°K) and that of CrN 11.10+ 1.58×103 T . Using these heat capacities and an estimated ΔS°298, f of 20×1 cal/°K-g atom N for the formation of the nitrides, second- and third-law calculations for all available vapor-pressure data were made. The two calculations agreed very well for the data of Mills. The heats of formation of Cr2 N and CrN are -31.8×1.0 and -28.4×1.5 kcal/mol, respectively. A partial phase diagram of the Cr-N system is presented. 相似文献