Poles, the only true resonant-state signals, are extracted from a worldwide collection of partial wave amplitudes using only one, well controlled pole-extraction method

Each and every energy dependent partial-wave analysis is parameterizing the pole positions in a procedure defined by the way how the continuous energy dependence is implemented. These pole positions are, henceforth, inherently model dependent. To reduce this model dependence, we use only one, coupled-channel, unitary, fully analytic method based on the isobar approximation to extract the pole positions from the each available member of the worldwide collection of partial wave amplitudes which are understood as nothing more but a good energy dependent representation of genuine experimental numbers assembled in a form of partial-wave data. In that way, the model dependence related to the different assumptions on the analytic form of the partial-wave amplitudes is avoided, and the true confidence limit for the existence of a particular resonant state, at least in one model, is established. The way how the method works, and first results are demonstrated for the S11 partial wave.Comment: 22 pages, 8 figures, 2 table

Analysis of using biomass in hotel 'Termag' on Jahorina

Hoteli predstavljaju značajne potrošače energije, pa je sve veće interesovanje za primenu alternativnih izvora u toj oblasti. Hotele u zimskim turističkim centrima karakteriše velika potreba zatoplotnom energijom koja se, uglavnom, dobija iz fosilnih goriva. Postojeće termotehničke instalacije analiziranog objekta su konvencionalnog tipa: toplota za sve potrebe (radijatorsko i podno grejanje, ventilacija, zagrevanje sanitarne vode, bazenske vode) obezbeđuje se iz centralne kotlarnice sa dva toplovodna kotla koji kao primarno gorivo koriste tečni gas (propan-butan), a kao rezervu lako lož ulje. Razmatrana je mogućnost zamene fosilnih goriva obnovljivim izvorima energije - drvnom biomasom. Analizirana je upotreba drveta u obliku cepanica, peleta, briketa i sečke. Kao optimalno rešenje usvojeno je kotlovsko postrojenje koje koristi sečku. Prikazan je način rada kotla i prateće opreme. Na osnovu tržišnih cena opreme i energenata urađeno je poređenje sistema koje koristi fosilna goriva i postrojenja koje bi radilo na sečku.Investicija u kotao za sagorevanje sečke kapaciteta 800 kW sa svom potrebnom opremom u kotlarnici, uključujući i postrojenje za proizvodnju sečke, isplatila bi se za približno 4,5 godine.Hotels represent significant energy consumers, so there is growing interest in application of alternate energy sources in that sector. During winter tourist season, hotels have intense demand for heat, which is mostly gained from fossil fuels. Existing HVC installation of the analyzed object are conventional: heat for all purposes (radiator and floor heating, ventilation, sanitary hot water, swimming pool water) is provided by central boiler station with two hot water boilers which use liquid gas (propane-butane), and oil as reserve fuel. In this paper, it is discussed possibility of replacing fossil fuel with renewable energy sources - wood biomass. It is analyzed using of wood logs, pellets, briquettes, and wood chips. As optimal solution, boiler which uses wood chips is proposed. It is shown operation of boiler and accessories. Based on market prices of equipment and energy sources, it is done comparison of fossil fuel system and system which uses wood chips. Payback period for investment in boiler using wood chips (capacity of 800 kW) with all auxiliary equipment, would be 4,5 years

Analysis of using biomass in hotel 'Termag' on Jahorina

Hoteli predstavljaju značajne potrošače energije, pa je sve veće interesovanje za primenu alternativnih izvora u toj oblasti. Hotele u zimskim turističkim centrima karakteriše velika potreba zatoplotnom energijom koja se, uglavnom, dobija iz fosilnih goriva. Postojeće termotehničke instalacije analiziranog objekta su konvencionalnog tipa: toplota za sve potrebe (radijatorsko i podno grejanje, ventilacija, zagrevanje sanitarne vode, bazenske vode) obezbeđuje se iz centralne kotlarnice sa dva toplovodna kotla koji kao primarno gorivo koriste tečni gas (propan-butan), a kao rezervu lako lož ulje. Razmatrana je mogućnost zamene fosilnih goriva obnovljivim izvorima energije - drvnom biomasom. Analizirana je upotreba drveta u obliku cepanica, peleta, briketa i sečke. Kao optimalno rešenje usvojeno je kotlovsko postrojenje koje koristi sečku. Prikazan je način rada kotla i prateće opreme. Na osnovu tržišnih cena opreme i energenata urađeno je poređenje sistema koje koristi fosilna goriva i postrojenja koje bi radilo na sečku.Investicija u kotao za sagorevanje sečke kapaciteta 800 kW sa svom potrebnom opremom u kotlarnici, uključujući i postrojenje za proizvodnju sečke, isplatila bi se za približno 4,5 godine.Hotels represent significant energy consumers, so there is growing interest in application of alternate energy sources in that sector. During winter tourist season, hotels have intense demand for heat, which is mostly gained from fossil fuels. Existing HVC installation of the analyzed object are conventional: heat for all purposes (radiator and floor heating, ventilation, sanitary hot water, swimming pool water) is provided by central boiler station with two hot water boilers which use liquid gas (propane-butane), and oil as reserve fuel. In this paper, it is discussed possibility of replacing fossil fuel with renewable energy sources - wood biomass. It is analyzed using of wood logs, pellets, briquettes, and wood chips. As optimal solution, boiler which uses wood chips is proposed. It is shown operation of boiler and accessories. Based on market prices of equipment and energy sources, it is done comparison of fossil fuel system and system which uses wood chips. Payback period for investment in boiler using wood chips (capacity of 800 kW) with all auxiliary equipment, would be 4,5 years

Variability in Biological Activities of Satureja montana Subsp. montana and Subsp. variegata Based on Different Extraction Methods

Winter savory (Satureja montana L.) is a well-known spice and medicinal plant with a wide range of activities and applications. Two subspecies of S. montana, subsp. montana and subsp. variegata, were used for the preparation of seven different extracts: steam distillation (essential oil (EO) and hydrolate (HY)), subcritical water (SWE), ultrasound-assisted (UAE-MeOH and UAE-H2O), and microwave-assisted (MAE-MeOH and MAE-H2O) extraction. The obtained EOs, HYs, and extracts were used for an in vitro evaluation of the antioxidant activity (DPPH, ABTS, reducing power, and superoxide anion methods) and in vitro antimicrobial activity against Bacillus cereus, Staphylococcus aureus, Enterococcus faecalis, Escherichia coli, Salmonella Typhimurium, Saccharomyces cerevisiae, and Candida albicans. The antimicrobial screening was conducted using disk-diffusion assessment, minimal inhibitory concentration, time–kill kinetics modeling, and pharmacodynamic study of the biocide effect. The total phenolic content (TPC) was highest in EO, followed by SWE, MAE, and UAE, and the lowest was in HY. The highest antimicrobial activity shows EO and SWE for both varieties, while different UAE and MAE extracts have not exhibited antimicrobial activity. The natural antimicrobials in the S. montana extract samples obtained by green extraction methods, indicated the possibility of ecologically and economically better solutions for future in vivo application of the selected plant subspecies.Supplementary material: [https://cherry.chem.bg.ac.rs/handle/123456789/5661

eta N S-wave scattering length in a three coupled channel, multiresonance, unitary model

The S-wave scattering length for eta-N elastic scattering is extracted from the S-wave T-matrix in a three coupled channel, multiresonance unitary model. Results are compared with values already reported in literature which are obtained applying multichannel, but single resonance -- no background models. A dispersion among the previously published values of the real part of the S-wave scattering length is observed. We demonstrate that the reported spread originates from the strong sensitivity of the scattering length upon the small variation of the used input resonance parameters. In addition, we show that eta-N scattering length value obtained in single resonance -- no background models significantly increases if background term is added in a unitary way. We question the reliability of previously reported values based only on the single resonance -- no background models, and demonstrate that the value of the eta-N S-wave scattering length obtained in this publication is much more realistic because of the multiresonance and unitary approach.Comment: revtex, 20 pages + 3 figures (PostScript: gzip + uuencode) included, submitted to Phys. Rev. C, brief Reports

Induced pseudoscalar coupling of the proton weak interaction

The induced pseudoscalar coupling $g_p$ is the least well known of the weak coupling constants of the proton's charged--current interaction. Its size is dictated by chiral symmetry arguments, and its measurement represents an important test of quantum chromodynamics at low energies. During the past decade a large body of new data relevant to the coupling $g_p$ has been accumulated. This data includes measurements of radiative and non radiative muon capture on targets ranging from hydrogen and few--nucleon systems to complex nuclei. Herein the authors review the theoretical underpinnings of $g_p$, the experimental studies of $g_p$, and the procedures and uncertainties in extracting the coupling from data. Current puzzles are highlighted and future opportunities are discussed.Comment: 58 pages, Latex, Revtex4, prepared for Reviews of Modern Physic

Centauro- and anti-Centauro-type events

Assuming that leading particles in high-energy hadronic and nuclear collisions become sources of a classical pion field, we show that the direct production of pions favors Centauro (mainly charged) events and that the production of pions through the $\rho$-type channel favors anti-Centauro (mainly neutral) events. We also observe a strong negative neutral-charged correlation in both cases.Comment: 14 pages, 2 pictures, late

Accurate Measurement of F2d/F2p and Rd-Rp

Results are presented for F2d/F2p and Rd-Rp from simultaneous measurements of deep inelastic muon scattering on hydrogen and deuterium targets, at 90, 120, 200 and 280 GeV. The difference Rd-Rp, determined in the range 0.002<x<0.4 at an average Q^2 of 5 GeV^2, is compatible with zero. The x and Q^2 dependence of F2d/F2p was measured in the kinematic range 0.001<x<0.8 and 0.1<Q^2<145 GeV^2 with small statistical and systematic errors. For x>0.1 the ratio decreases with Q^2.Comment: 29 pages, LateX, including figures, prepared with uufiles, arriving with .sty files as used, figures .eps files and a table .tex file. Accepted for publication in Nucl.Phys.B 199

Resurrection and redescription of Varestrongylus alces (Nematoda; Protostrongylidae), a lungworm of the Eurasian moose (Alces alces), with report on associated pathology

Varestrongylus alces, a lungworm in Eurasian moose from Europe has been considered a junior synonym of Varestrongylus capreoli, in European roe deer, due to a poorly detailed morphological description and the absence of a type-series. Methods Specimens used in the redescription were collected from lesions in the lungs of Eurasian moose, from Vestby, Norway. Specimens were described based on comparative morphology and integrated approaches. Molecular identification was based on PCR, cloning and sequencing of the ITS-2 region of the nuclear ribosomal DNA. Phylogenetic analysis compared V. alces ITS-2 sequences to these of other Varestrongylus species and other protostrongylids. Results Varestrongylus alces is resurrected for protostrongylid nematodes of Eurasian moose from Europe. Varestrongylus alces causes firm nodular lesions that are clearly differentiated from the adjacent lung tissue. Histologically, lesions are restricted to the parenchyma with adult, egg and larval parasites surrounded by multinucleated giant cells, macrophages, eosinophilic granulocytes, lymphocytes. The species is valid and distinct from others referred to Varestrongylus, and should be separated from V. capreoli. Morphologically, V. alces can be distinguished from other species by characters in the males that include a distally bifurcated gubernaculum, arched denticulate crura, spicules that are equal in length and relatively short, and a dorsal ray that is elongate and bifurcated. Females have a well-developed provagina, and are very similar to those of V. capreoli. Morphometrics of first-stage larvae largely overlap with those of other Varestrongylus. Sequences of the ITS-2 region strongly support mutual independence of V. alces, V. cf. capreoli, and the yet undescribed species of Varestrongylus from North American ungulates. These three taxa form a well-supported crown-clade as the putative sister of V. alpenae. The association of V. alces and Alces or its ancestors is discussed in light of host and parasite phylogeny and host historical biogeography. Varestrongylus alces is a valid species, and should be considered distinct from V. capreoli. Phylogenetic relationships among Varestrongylus spp. from Eurasia and North America are complex and consistent with faunal assembly involving recurrent events of geographic expansion, host switching and subsequent speciation. Cervidae, Cryptic species, Historical biogeography, ITS-2, Metastrongyloidea, Parasite biodiversity, Varestrongylinae, Varestrongylus capreoli, Verminous pneumoniapublishedVersio