1,330 research outputs found
Parasitosis of Ruminant Animal in Private Farms of Vysokogorny and Laishevskiy Districts of the Republic of Tatarstan
No full textThe purpose of the research is to study the species composition of intestinal parasitosis agents in ruminant animals in citizens’ private farms in Vysokogorny and Laishevskiy districts of the Republic of Tatarstan. Materials and methods. The work has been executed in the Epizootology, Parasitology and Radiobiology Department at the Kazan State Academy of Veterinary Science named after N.E.Bauman and in citizens’ private farms in Vysokogorny and Laishevskiy districts of the Republic of Tatarstan during autumn-winter period in 2016-2017. 586 fecal specimen, including 364 samples of cattle, 168 samples of sheep and 54 samples of goats, have been studied by the modified method of flotation. Animals extent of invasion were determined as well as average number of helminth eggs and eimeria oocyst in 1 g of feces were calculated with the help of VIGIS count chamber. Kheisin key was used to identify eimeria types. Statistical analysis of numeric material was carried out with the help of Microsoft Excel spreadsheet processor. Results and discussion. Eggs of helminth classes Fasciola, Moniezia, Nematodirus, Trichocephalus as well as eimeria oocyst had been founded in cattle and small ruminants fecal specimen. On investigated areas the degree of infection by fascioles was 28.2%, by moniezia 41.5%, by nematodirus 52.7%, by trichocephalus 28.3%, and by eimeria 51.3%. Small ruminants were infected with fascioles in 56.5%, moniezia in 52.7%, thysaniezia in 15.7%, nematodirus in 58.1%, trichocephalus in 38.5%, and eimeria in 21.3%. Taking into consideration prevalence of parasitosis of ruminant animal in private farms of Vysokogorny and Laishevskiy districts of the Republic of Tatarstan it is necessary to make up a plan of antiparasitic measures inclusive of climate pattern and developmental biology of agents
Exploring the N\ensuremath{\Lambda}\textendash{}N\ensuremath{\Sigma} coupled system with high precision correlation techniques at the LHC
No full textThe interaction of and hyperons (Y) with nucleons (N) is strongly influenced by the coupled-channel
dynamics. Due to the small mass difference of the N and N systems, the sizable coupling strength of
the N ↔ N processes constitutes a crucial element in the determination of the N interaction. In
this letter we present the most precise measurements on the interaction of p pairs, from zero relative
momentum up to the opening of the N channel. The correlation function in the relative momentum
space for p ⊕ p pairs measured in high-multiplicity triggered pp collisions at √s = 13 TeV at the
LHC is reported. The opening of the inelastic N channels is visible in the extracted correlation function
as a cusp-like structure occurring at relative momentum k∗ = 289 MeV/c. This represents the first direct
experimental observation of the N ↔ N coupled channel in the p system. The correlation function
is compared with recent chiral effective field theory calculations, based on different strengths of the
N ↔ N transition potential. A weaker coupling, as possibly supported by the present measurement,
would require a more repulsive three-body NN interaction for a proper description of the in-medium
properties, which has implications on the nuclear equation of state and for the presence of hyperons
inside neutron stars
Constraining the K ¯ N coupled channel dynamics using femtoscopic correlations at the LHC
No full textAbstract The interaction of K - with protons is characterised by the presence of several coupled channels, systems like K ¯ 0 n and \uppi \Sigma π Σ with a similar mass and the same quantum numbers as the K - p state. The strengths of these couplings to the K - p system are of crucial importance for the understanding of the nature of the Λ ( 1405 ) resonance and of the attractive K - p strong interaction. In this article, we present measurements of the K - p correlation functions in relative momentum space obtained in pp collisions at s = 13 Te, in p–Pb collisions at s NN = 5.02 Te, and (semi)peripheral Pb–Pb collisions at s NN = 5.02 Te. The emitting source size, composed of a core radius anchored to the K + p correlation and of a resonance halo specific to each particle pair, varies between 1 and 2 fm in these collision systems. The strength and the effects of the K ¯ 0 n and \uppi \Sigma π Σ inelastic channels on the measured K - p correlation function are investigated in the different colliding systems by comparing the data with state-of-the-art models of chiral potentials. A novel approach to determine the conversion weights ω , necessary to quantify the amount of produced inelastic channels in the correlation function, is presented. In this method, particle yields are estimated from thermal model predictions, and their kinematic distribution from blast-wave fits to measured data. The comparison of chiral potentials to the measured K - p interaction indicates that, while the \uppi \Sigma π Σ – K - p dynamics is well reproduced by the model, the coupling to the K ¯ 0 n channel in the model is currently underestimated
Cytotoxic activity of T-2 toxin for immortalized cultures of fetal calf lung epithelial cells
No full text15 Inconsistency and Imbalance of Managing the Modern Economic Systems’ Innovative Development
No full textExploring the N-N coupled system with high precision correlation techniques at the LHC
No full textThe interaction of and hyperons (Y) with nucleons (N) is strongly influenced by the coupled-channel dynamics. Due to the small mass difference of the and systems, the coupling strength of the processes is non-negligible and constitutes a crucial element in the determination of the N interaction. In this letter we present the most precise measurements on the interaction of p pairs, from zero relative momentum up to the opening of the channel. The correlation function in the relative momentum space for pairs measured in high-multiplicity triggered pp collisions at TeV at the LHC is reported. The opening of the inelastic N channels is visible in the extracted correlation function as a cusp-like structure occurring at relative momentum MeV/. This represents the first direct experimental observation of the coupled channel in the p system. The correlation function is compared with recent chiral effective field theory calculations, based on different strengths of the transition potential. A weaker coupling, as possibly supported by the present measurement, would require a more repulsive three-body NN interaction for a proper description of the in-medium properties, which has implications on the nuclear equation of state and for the presence of hyperons inside neutron stars.The interaction of Λ and Σ hyperons (Y) with nucleons (N) is strongly influenced by the coupled-channel dynamics. Due to the small mass difference of the NΛ and NΣ systems, the sizable coupling strength of the NΣ↔NΛ processes constitutes a crucial element in the determination of the NΛ interaction. In this letter we present the most precise measurements on the interaction of pΛ pairs, from zero relative momentum up to the opening of the NΣ channel. The correlation function in the relative momentum space for pΛ⊕p‾Λ‾ pairs measured in high-multiplicity triggered pp collisions at s=13 TeV at the LHC is reported. The opening of the inelastic NΣ channels is visible in the extracted correlation function as a cusp-like structure occurring at relative momentum k⁎=289MeV/c. This represents the first direct experimental observation of the NΣ↔NΛ coupled channel in the pΛ system. The correlation function is compared with recent chiral effective field theory calculations, based on different strengths of the NΣ↔NΛ transition potential. A weaker coupling, as possibly supported by the present measurement, would require a more repulsive three-body NNΛ interaction for a proper description of the Λ in-medium properties, which has implications on the nuclear equation of state and for the presence of hyperons inside neutron stars.The interaction of and hyperons (Y) with nucleons (N) is strongly influenced by the coupled-channel dynamics. Due to the small mass difference of the and systems, the sizeable coupling strength of the processes constitutes a crucial element in the determination of the N interaction. In this letter we present the most precise measurements on the interaction of p pairs, from zero relative momentum up to the opening of the channel. The correlation function in the relative momentum space for pairs measured in high-multiplicity triggered pp collisions at TeV at the LHC is reported. The opening of the inelastic N channels is visible in the extracted correlation function as a cusp-like structure occurring at relative momentum = 289 MeV/. This represents the first direct experimental observation of the coupled channel in the p system. The correlation function is compared with recent chiral effective field theory calculations, based on different strengths of the transition potential. A weaker coupling, as possibly supported by the present measurement, would require a more repulsive three-body NN interaction for a proper description of the in-medium properties, which has implications on the nuclear equation of state and for the presence of hyperons inside neutron stars
Two-pion femtoscopy in p -Pb collisions at s N N = 5.02 TeV
No full textWe report the results of the femtoscopic analysis of pairs of identical pions measured in p-Pb collisions at root(NN)-N-S = 5.02 TeV. Femtoscopic radii are determined as a function of event multiplicity and pair momentum in three spatial dimensions. As in the pp collision system, the analysis is complicated by the presence of sizable background correlation structures in addition to the femtoscopic signal. The radii increase with event multiplicity and decrease with pair transverse momentum. When taken at comparable multiplicity, the radii measured in p-Pb collisions, at high multiplicity and low pair transverse momentum, are 10%-20% higher than those observed in pp collisions but below those observed in A-A collisions. The results are compared to hydrodynamic predictions at large event multiplicity as well as discussed in the context of calculations based on gluon saturation
Constraining the K ̄ N coupled channel dynamics using femtoscopic correlations at the LHC
No full textThe interaction of K−with protons is characterised by the presence of several coupled channels, systems like K 0 n and π with a similar mass and the same
quantum numbers as the K−p state. The strengths of these
couplings to the K−p system are of crucial importance for
the understanding of the nature of the (1405) resonance
and of the attractive K−p strong interaction. In this arti-
cle, we present measurements of the K−p correlation func-
tions in relative momentum space obtained in pp collisions at
√s = 13 TeV, in p–Pb collisions at √sNN = 5.02 TeV, and
(semi)peripheral Pb–Pb collisions at √sNN = 5.02 TeV. The
emitting source size, composed of a core radius anchored to
the K+p correlation and of a resonance halo specific to each
particle pair, varies between 1 and 2 fm in these collision sys-
tems. The strength and the effects of the K 0 n and π inelas-
tic channels on the measured K−p correlation function are
investigated in the different colliding systems by comparing
the data with state-of-the-art models of chiral potentials. A
novel approach to determine the conversion weights ω, nec-
essary to quantify the amount of produced inelastic channels
in the correlation function, is presented. In this method, parti-
cle yields are estimated from thermal model predictions, and
their kinematic distribution from blast-wave fits to measured
data. The comparison of chiral potentials to the measured
K−p interaction indicates that, while the π –K−p dynam-
ics is well reproduced by the model, the coupling to the K 0 n
channel in the model is currently underestimate
Паразитозы жвачных животных в личных хозяйствах Высокогорского и Лаишевского районов Республики Татарстан
No full textThe purpose of the research is to study the species composition of intestinal parasitosis agents in ruminant animals in citizens’ private farms in Vysokogorny and Laishevskiy districts of the Republic of Tatarstan. Materials and methods. The work has been executed in the Epizootology, Parasitology and Radiobiology Department at the Kazan State Academy of Veterinary Science named after N.E.Bauman and in citizens’ private farms in Vysokogorny and Laishevskiy districts of the Republic of Tatarstan during autumn-winter period in 2016-2017. 586 fecal specimen, including 364 samples of cattle, 168 samples of sheep and 54 samples of goats, have been studied by the modified method of flotation. Animals extent of invasion were determined as well as average number of helminth eggs and eimeria oocyst in 1 g of feces were calculated with the help of VIGIS count chamber. Kheisin key was used to identify eimeria types. Statistical analysis of numeric material was carried out with the help of Microsoft Excel spreadsheet processor. Results and discussion. Eggs of helminth classes Fasciola, Moniezia, Nematodirus, Trichocephalus as well as eimeria oocyst had been founded in cattle and small ruminants fecal specimen. On investigated areas the degree of infection by fascioles was 28.2%, by moniezia 41.5%, by nematodirus 52.7%, by trichocephalus 28.3%, and by eimeria 51.3%. Small ruminants were infected with fascioles in 56.5%, moniezia in 52.7%, thysaniezia in 15.7%, nematodirus in 58.1%, trichocephalus in 38.5%, and eimeria in 21.3%. Taking into consideration prevalence of parasitosis of ruminant animal in private farms of Vysokogorny and Laishevskiy districts of the Republic of Tatarstan it is necessary to make up a plan of antiparasitic measures inclusive of climate pattern and developmental biology of agents.Цель исследований: изучение видового состава возбудителей кишечных паразитозов у жвачных животных в личных хозяйствах граждан Высокогорского и Лаишевского районов Республики Татарстан. Материалы и методы. Работа выполнена на кафедре эпизоотологии, паразитологии и радиобиологии Казанской ГАВМ им. Н. Э. Баумана и в личных хозяйствах граждан Высокогорского и Лаишевского районов РТ в осенне-зимний период 2016-2017 гг. Исследовано модифицированным методом флотации 586 проб фекалий, в том числе 364 - от крупного рогатого скота, 168 - от овец и 54 - от коз. Определяли экстенсинвазированность животных, а также подсчитывали среднее число яиц гельминтов и ооцист эймерий в 1 г фекалий с помощью счетной камеры ВИГИС. Для идентификации видов эймерий использовали определительную таблицу Хейсина. Статистическую обработку цифрового материала проводили с помощью редактора электронных таблиц Microsoft Excel. Результаты и обсуждение. В пробах фекалий у крупного и мелкого рогатого скота были выявлены яйца гельминтов родов Fasciola, Moniezia, Nematodirus, Trichocephalus, а также ооцисты эймерий. В исследованных районах зараженность крупного рогатого скота фасциолами составила 28,2%, мониезиями - 41,5, нематодирусами - 52,7, трихоцефалами - 28,3 и эймериями - 51,3%. Мелкий рогатый скот был заражен фасциолами на 56,5%, мониезиями - на 52,7, тизаниезиями - на 15,7, нематодирусами - на 58,1, трихоцефалами - на 38,5 и эймериями - на 21,3%. В связи с широким распространением паразитозов у жвачных животных в личных хозяйствах Высокогорского и Лаишевского районов Республики Татарстан необходимо составить план противопаразитарных мероприятий с учетом климатических особенностей и биологии развития возбудителей
- …
