The new approaches of the animal production systems make managing the mineral nutrition a challenge. Versus the excessive, trace mineral supply in intensively managed livestock, well above the physiological requirements, is the no trace mineral supplementation of organic systems, which become highly dependent on trace minerals in the soil. Nowadays, in addition to the animal health perspective,...

This paper specifies an observational semantics and gives an original presentation of the Byrd box model. The approach accounts for the semantics of Prolog tracers independently of a particular Prolog implementation. Prolog traces are, in general, considered as rather obscure and difficult to use. The proposed formal presentation of its trace constitutes a simple and pedagogical approach for te...

Abstract In the framework of our extensive modeling study spectral evolution white dwarfs, we present here a new set detailed calculations transport residual hydrogen in helium-rich dwarfs. First, investigate so-called float-up process at high effective temperatures, whereby upward diffusion trace leads to formation atmosphere. We examine dependence this phenomenon on initial abundance and stre...

Recently, with the development of detonation-based propulsion systems, scholars have begun to study how perform mode control on rotating detonation combustor (RDC). It is important figure out influence operation transition RDC. Actually, essential different modes multi-wave structures. In this study, two-dimensional numerical simulations RDC are conducted effect stability and performance A unif...

At high frequencies, interaural time differences (ITDs) are conveyed by the sound envelope. Sensitivity to envelope ITDs depends crucially on the envelope shape. Reverberation degrades the envelope shape, reducing the modulation depth of the envelope and the slope of its flanks. Reverberation also reduces the envelope interaural coherence (i.e., the similarity of the envelopes at two ears). The...

Previous studies have shown that underlining sentences while reading is an effective comprehension strategy that many people use spontaneously. We examined which components of this underlining strategy could facilitate comprehension. The effects on comprehension of lined traces and hand movement were examined independently. Eighty-two undergraduates were assigned to one of the four conditions: ...

The chlorophyll precursors protochlorophyllide and chlorophyllide were identified in purified envelope membranes from spinach (Spinacia oleracea) chloroplasts. This was shown after pigment separation by high performance liquid chromatography (HPLC) using specific fluorescence detection for these compounds. Protochlorophyllide and chlorophyllide concentrations in envelope membranes were in the r...

The nuclear envelope consists of 2 membranes separated by 30-50 nm, but how the 2 membranes are evenly spaced has been an open question in the field. Nuclear envelope bridges composed of inner nuclear membrane SUN proteins and outer nuclear membrane KASH proteins have been proposed to set and regulate nuclear envelope spacing. We tested this hypothesis directly by examining nuclear envelope spa...

We characterize the dual of the generalized hexagons naturally associated to the groups G2(q) and 3D4(q) by looking at certain configurations, and also by considering intersections of traces. For instance, the dual of a generalized hexagon F of finite order (s, t) is associated to the Chevaliey groups mentioned above if and only if the intersection of any two traces x v and x z, with some addit...

It is proved that the fixed point submonoid and the periodic point submonoid of a trace monoid endomorphism are always finitely generated. Considering the Foata normal form metric on trace monoids and uniformly continuous endomorphisms, a finiteness theorem is proved for the infinite fixed points of the continuous extension to real traces.