Ocena kvaliteta rada mikser distributer prikolice jf-stoll u pripremi tmr obroka za muzne krave

Quality of TMR feed homogenization and distribution is analyzed in this paper. TMR feed mixture for lactating cows feeding was prepared in vertical mixer distribution trailer JF- Stoll VM 8 1S. The mixture was consisted of components that are defined for dairy cows in the first lactation phase, with the milk production of about 40 l/day. Physical and chemical parameters are analyzed according to the regulations of quality and other requirements for animal feeds (Official Journal of SRJ nr. 20/00 38/01), such as contents of moisture, ash, fats, cellulose, proteins and non nitrogen extractive matter. For sampling and analysis are applied standard and non standard methods.U radu je analiziran kvalitet homogenizacije i distribucije TMR obroka za muzne krave koji je formiran u vertikalnoj mikser distributer prikolici JF-Stoll VM 8 1S. TMR obrok je sastavljen po recepturi za grla u muži u prvoj fazi laktacije sa proizvodnjom mleka od oko 40 l/dan. Analizirani su fizičko hemijski sastojci u skladu sa pravilnikom o kvalitetu i drugim zahtevima za hranu za životinje (sl. list SRJ br.20/00 38/01), kao što su sadržaj vlage, sadržaj pepela, sadržaj masti, sadržaj celuloze, sadržaj proteina, sadržaj bezazotnih ekstraktivnih materija. Za uzorkovanje i nalalizu su primenjene standardne i nestandardne metode

Representations and geometrical properties of generalized inverses over fields

In this paper, as a generalization of Urquhart’s formulas, we present a full description of the sets of inner inverses and (B, C)-inverses over an arbitrary field. In addition, identifying the matrix vector space with an affine space, we analyze geometrical properties of the main generalized inverse sets. We prove that the set of inner inverses, and the set of (B, C)-inverses, form affine subspaces and we study their dimensions. Furthermore, under some hypotheses, we prove that the set of outer inverses is not an affine subspace but it is an affine algebraic variety. We also provide lower and upper bounds for the dimension of the outer inverse set.Agencia Estatal de InvestigaciónUniversidad de Alcal

Representations and symbolic computation of generalized inverses over fields

This paper investigates representations of outer matrix inverses with prescribed range and/or none space in terms of inner inverses. Further, required inner inverses are computed as solutions of appropriate linear matrix equations (LME). In this way, algorithms for computing outer inverses are derived using solutions of appropriately defined LME. Using symbolic solutions to these matrix equations it is possible to derive corresponding algorithms in appropriate computer algebra systems. In addition, we give sufficient conditions to ensure the proper specialization of the presented representations. As a consequence, we derive algorithms to deal with outer inverses with prescribed range and/or none space and with meromorphic functional entries.Agencia Estatal de investigaciónUniversidad de Alcal

Micromeria thymifolia Essential Oil Suppresses Quorum-sensing Signaling in Pseudomonas aeruginosa

The chemical composition, antimicrobial and antiquorum sensing activity of the essential oil of Micromeria thymifolia (Scop.) Fritsch were investigated. Limonene, piperitone epoxide and piperitenone epoxide were found as the main constituents using a gas chromatography-mass spectrometry technique. In vitro antimicrobial activity of the oil was tested against six bacterial and seven fungal strains and high antimicrobial potential was noticed. Minimum inhibitory concentration varied from 0.031 mg/mL to 0.5 mg/mL for bacterial and 0.062 mg/mL to 0.5 mg/mL for fungal strains. The antiquorum properties of the essential oil were evaluated on Pseudomonas aeruginosa PAO1. The oil was tested at subMiC concentrations for anti-quorum sensing activity. The analyses on quorum-sensing functions have been carried out by evaluating twitching and swarming of bacterial cultures and the total amount of pyocyanin production produced by P. aeruginosa. This study showed that M thymifolia essential oil exhibited antiquorum sensing activity and may be used as an antipathogenic drug

Micromeria thymifolia Essential Oil Suppresses Quorum-sensing Signaling in Pseudomonas aeruginosa

The chemical composition, antimicrobial and antiquorum sensing activity of the essential oil of Micromeria thymifolia (Scop.) Fritsch were investigated. Limonene, piperitone epoxide and piperitenone epoxide were found as the main constituents using a gas chromatography-mass spectrometry technique. In vitro antimicrobial activity of the oil was tested against six bacterial and seven fungal strains and high antimicrobial potential was noticed. Minimum inhibitory concentration varied from 0.031 mg/mL to 0.5 mg/mL for bacterial and 0.062 mg/mL to 0.5 mg/mL for fungal strains. The antiquorum properties of the essential oil were evaluated on Pseudomonas aeruginosa PAO1. The oil was tested at subMiC concentrations for anti-quorum sensing activity. The analyses on quorum-sensing functions have been carried out by evaluating twitching and swarming of bacterial cultures and the total amount of pyocyanin production produced by P. aeruginosa. This study showed that M thymifolia essential oil exhibited antiquorum sensing activity and may be used as an antipathogenic drug

FILM MUSIC OF ZORAN HRISTIĆ IN THE CONTEXT OF THE BLACK WAVE

Rad je napisan u okviru projekta Brendovi u književnosti, jeziku i kulturi (Projekat FIL-1819), iz ciklusa projekata Jezik, književnost, kultura danas Filološko-umetničkog fakulteta Univerziteta u Kragujevcu.More than half a century ago, Zoran Hristić composed music for the film The man from the oak forest by painter and director Miodrag Mića Popović. The Black Wave in Serbian cinematography began with this film. Creative and poignant, the Black Wave is probably the most provocative media brand of socialist Yugoslavia, a turning point in understanding the seventh art, and of the ideological position of the once-existing country as well. The aim of this study is to cast light upon the mentioned segment of Hristić’s opus (contextualized by poetic, social and political framework of the Black Wave), where he broke up with conventional lines of film music conception. Namely, Hristić demonstrated adaptability to production conditions as well as creativity in forming scores operating as authentic (aural) continuations, enhancements of the director’s ideas and emotions. The results obtained from analyzing certain scores of this composer (The man from the oak forest, Hassan-aga’s wife, The horoscope, Crows, The restless, and Death and the dervish), point to the following fact: the composer affirmed musical resources that had previously never been used in domestic cinematography (twelve-note chromatic scale, concrete music, new sound objects’ research, combining popular genres with high art idioms etc.), thus revealing new possibilities for film music. In other words, as the Black Wave is seen today as a wholesome media/cinematographic brand of the common ex-state, it is possible to claim that Zoran Hristić created the “brand” sound for this artistic movement by his unconventional actions in music.Publishe

Conditions for Existence, Representations, and Computation of Matrix Generalized Inverses

Conditions for the existence and representations of {2}-, {1}-, and {1, 2}-inverses which satisfy certain conditions on ranges and/or null spaces are introduced. These representations are applicable to complex matrices and involve solutions of certain matrix equations. Algorithms arising from the introduced representations are developed. Particularly, these algorithms can be used to compute the Moore-Penrose inverse, the Drazin inverse, and the usual matrix inverse. The implementation of introduced algorithms is defined on the set of real matrices and it is based on the Simulink implementation of GNN models for solving the involved matrix equations. In this way, we develop computational procedures which generate various classes of inner and outer generalized inverses on the basis of resolving certain matrix equations. As a consequence, some new relationships between the problem of solving matrix equations and the problem of numerical computation of generalized inverses are established.Theoretical results are applicable to complex matrices and the developed algorithms are applicable to both the time-varying and time-invariant real matrices

Sturdy bands of semigroups

In this paper we consider band compositions determined by two transitive systems of monomorphisms, called the sturdy bands of semigroups