Abstract Black soldier fly larvae (BSFL) were reared on mixtures of swine manure and circulating fluidized bed ash (CFA) in different ratios. The aim was to evaluate the impacts insoluble inorganic matter BSFL larval frass. growth performance nutrient composition measured under treatments. intestinal microbiota structure, morphological characteristics, total proteolytic activity gut analyzed. frass tested for nutrients analyzed using energy‐dispersive spectroscopy scanning electron...

Livestock manure is an important component of agricultural organic waste, and in recent years, with the development research on bioconversion manure, BSFs have been proven to be useful treatment a variety livestock wastes. In-depth composition its effect BSFL is, however, very scarce. The purpose this study was identify parameters that influenced growth fed fattening pig manure. pH, moisture, nutrients manures (namely, nursery, growing, finishing manures) were measured. To examine influence...

Cellulose-degrading bacteria were identified from distillery lees, and the strains optimized for fermentation enzyme production, providing effective resource utilization of lees developing cellulase. Based on univariate test, response surface test was used to optimize production conditions fermentation. The screened strain JZ2 had a clear circle-to-colony diameter ratio 2.0. activities exoglucanase, endoglucanase, β-glucosidase 4.341 ± 0.05 U/mL, 1.874 0.04 0.739 0.02 respectively. bacterial...

In some previous works, the analytic structure of spectrum a quantum graph operator as function vertex conditions and other parameters were established. However, specific local coordinate chart on Grassmannian all possible was used, thus creating an erroneous impression that something “wrong” can happen at boundaries chart. Here, we show analyticity corresponding “dispersion relation” holds over whole Grassmannian, well parameter spaces. We also address Dirichlet-to-Neumann technique...

This paper deals with the spectral properties of self-adjoint Schrödinger operators L_{Q}=-D^{2}+Q \delta -type conditions on regular metric trees. Firstly, we prove that operator \mathcal{L}_{\delta,Q} given in this is if it lower semibounded. Then a necessary and sufficient condition for spectrum to be discrete. The an analog Molchanov's discreteness criteria. Finally, using theory deficiency indices get which ensures spectra general boundary

This paper mainly deals with the Sturm-Liouville operator \begin{equation*} \mathbf{H}=\frac{1}{w(x)}\left( -\frac{\mathrm{d}}{\mathrm{d}x}p(x)\frac{ \mathrm{d}}{\mathrm{d}x}+q(x)\right) ,\text{ }x\in \Gamma \end{equation*} acting in $L_{w}^{2}\left( \right) ,$ where $\Gamma $ is a metric graph. We establish relationship between bottom of spectrum and positive solutions quantum graphs, which generalization classical Allegretto-Piepenbrink theorem. Moreover, we prove Persson-type theorem,...

Abstract The larvae of black soldier fly, Hermetia illucens (L.) (Diptera: Stratiomyidae), are an excellent source feed for animals and have emerged as a promising candidate waste disposal. larval growth can be impacted by the intake heavy metals. However, underlying mechanism metal tolerance gut microbiome is still poorly understood, well how metals, especially in combination, affect communities bacteria gut. Therefore, this study we focus on Cu Zn microbiome, bioaccumulated metals...

We study the vertex conditions of local Sturm-Liouville operators on metric graphs. Our aim is to give a new description defining self-adjoint and clarify natural geometric structure space complex conditions. Based this description, we self-adjointness results for finite graphs Povzner-Wienholtz-type infinite

<abstract><p>The exterior transmission eigenvalues corresponding to spherical symmetry media and spherically symmetric eigenfunctions are considered. Under various coefficient conditions, we give the number asymptotic distribution (described by subscript numbers) of these in complex plane.</p></abstract>

This paper deals with the spectral properties of self-adjoint Schrödinger operators δʹ -type conditions on infinite regular trees. Firstly, we discuss semi-boundedness and self-adjointness this kind operator. Secondly, by using form approach, give necessary sufficient condition that ensures spectra are discrete.

In this paper, we focus on the core stability of vertex cover games, which arise from problems graphs. Based duality theory linear programming, prove that a balanced game has stable if and only every edge belongs to maximum matching in underlying graph. We also for totally game, largeness, extendability, exactness are all equivalent, implies stability. Furthermore, show three related properties can be determined efficiently.

We introduce a novel approach for dealing with eigenvalue problems of Sturm-Liouville operators generated by the differential expression \begin{equation*} Ly=\frac{1}{r}\left( -(p\left[ y^{\prime }+sy\right] )^{\prime }+sp\left[ +qy\right) \end{equation*} which is based on norm resolvent convergence classical operators. This enables us to describe continuous dependence $n$-th space self-adjoint boundary conditions and coefficients equation after giving inequalities among eigenvalues....

This paper considers the comparison between eigenvalues of Laplace operators with standard conditions and anti-standard on non-bipartite graphs which are equilateral or inequilateral. First all, we show calculation metric arbitrary edge length. Based this method, use properties cosine function arccosine to find graphs. In addition, give inequalities a special inequilateral graph.