408 research outputs found
Linear, diatomic crystal: single-electron states and large-radius excitons
The large-radius exciton spectrum in a linear crystal with two atoms in the
unit cell was obtained using the single-electron eigenfunctions and the band
structure, which were found by the zero-range potential (ZRP) method. The
ground-state exciton binding energies for the crystal in vacuum appeared to be
larger than the corresponding energy gaps for any set of the crystal
parameters.Comment: 9 pages, 1 figure, 1 tabl
The balance of pressor and depressor substances in the neurons of arcuate nucleus of hypothalamus in etiologically different arterial hypertension
Tishchenko S. V. The balance of pressor and depressor substances in the neurons of arcuate nucleus of hypothalamus in etiologically different arterial hypertension. Journal of Education, Health and Sport. 2019;9(4):492-502. eISNN 2391-8306. DOI http://dx.doi.org/10.5281/zenodo.2620542
http://ojs.ukw.edu.pl/index.php/johs/article/view/6858
The journal has had 7 points in Ministry of Science and Higher Education parametric evaluation. Part B item 1223 (26/01/2017).
1223 Journal of Education, Health and Sport eISSN 2391-8306 7
Β© The Authors 2019;
This article is published with open access at Licensee Open Journal Systems of Kazimierz Wielki University in Bydgoszcz, Poland
Open Access. This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author (s) and source are credited. This is an open access article licensed under the terms of the Creative Commons Attribution Non commercial license Share alike.
(http://creativecommons.org/licenses/by-nc-sa/4.0/) which permits unrestricted, non commercial use, distribution and reproduction in any medium, provided the work is properly cited.
The authors declare that there is no conflict of interests regarding the publication of this paper.
Received: 05.04.2019. Revised: 15.04.2019. Accepted: 24.04.2019.
The balance of pressor and depressor substances in the neurons of arcuate nucleus of hypothalamus in etiologically different arterial hypertension
S. V. Tishchenko
Zaporizhzhia State Medical University
Department of Pathological Physiology
Abstract
It has been proved that arterial hypertension is not associated exclusively with an increase in vascular tone but also with a complex of pathological processes that results in cardiovascular pathology and lesions of the target organs. The central and peripheral contours of blood pressure regulation are well studied. Nevertheless, despite the presence of two regulatory contours the key structure that integrates and controls their function is the hypothalamus, in particular its arcuate nucleus. It is proved that the effectiveness of blood pressure regulation depends on those neuromodulators and neurohormones that are synthesized in the hypothalamus or transported to it. The most important neurohormones in the regulation of arterial blood presssure are brain natriuretic peptide, Ξ²-endorphin, neurotensin and angiotensin II. Equally important factor is the functional state of arcuate nucleus neurons, which depends on adequate blood supply, innervation and inter-neuronal relationships. The link between the above described processes is nitrogen monoxide system (NOS) and its universal messenger β nitric oxide NO.
The purpose of the work was to determine the nature of the balance of pressor (angiotensin II and neurotensin) and depressor (brain natriuretic peptide and Ξ²-endorphin) neurohormones in the neurons of the arcuate nucleus of the hypothalamus and the ratio of NOS isoforms with hypertension of different etiology.
Materials and methods. The studies were conducted on 32 mature male Wistar rats and 16 male spontaneously hypertensive rats. To study the content of neuropeptides and NOS enzyme isoforms, an immunohistochemical method was used, followed by digital image processing by Image J. The results that were obtained were calculated using the "Statistica 11.0" program.
Conclusions
1. The same changes of neuropeptidesβ content in hypothalamic arcuate nucleus are observed in the rats with arterial hypertension which are characterized by a decrease in the brain natriuretic peptide, Ξ²-endorphin and angiotensin II content with a significant increase in neurotensin content regardless of arterial hypertension etiology and pathogenesis. The peculiarities of the balance between depressor and pressor substances depend on the etiopathogenetic mechanisms β with the endocrine-salt model of arterial hypertension there is a significant predominance of depressor neuropeptides (in 4.3 times) whereas in essential hypertension this balance is similar to the control.
2. The changes of the NOS isoform ratio in the arcuate nucleus of hypothalamus are unidirectional, both with endocrine-salt model of arterial hypertension and essential hypertension β the content of eNOS decreases while nNOS and iNOS content increases.
Key words: hypothalamus, arcuate nucleus, neuropeptides, nitric oxide, rats, arterial hypertensio
The balance of pressor and depressor substances in the neurons of arcuate nucleus of hypothalamus in etiologically different arterial hypertension
It has been proved that arterial hypertension is not associated exclusively with an increase in vascular tone but also with a complex of pathological processes that results in cardiovascular pathology and lesions of the target organs. The central and peripheral contours of blood pressure regulation are well studied. Nevertheless, despite the presence of two regulatory contours the key structure that integrates and controls their function is the hypothalamus, in particular its arcuate nucleus. It is proved that the effectiveness of blood pressure regulation depends on those neuromodulators and neurohormones that are synthesized in the hypothalamus or transported to it. The most important neurohormones in the regulation of arterial blood presssure are brain natriuretic peptide, Ξ²-endorphin, neurotensin and angiotensin II. Equally important factor is the functional state of arcuate nucleus neurons, which depends on adequate blood supply, innervation and inter-neuronal relationships. The link between the above described processes is nitrogen monoxide system (NOS) and its universal messenger β nitric oxide NO.
The purpose of the work was to determine the nature of the balance of pressor (angiotensin II and neurotensin) and depressor (brain natriuretic peptide and Ξ²-endorphin) neurohormones in the neurons of the arcuate nucleus of the hypothalamus and the ratio of NOS isoforms with hypertension of different etiology.
Materials and methods. The studies were conducted on 32 mature male Wistar rats and 16 male spontaneously hypertensive rats. To study the content of neuropeptides and NOS enzyme isoforms, an immunohistochemical method was used, followed by digital image processing by Image J. The results that were obtained were calculated using the "Statistica 11.0" program.
Conclusions
1. The same changes of neuropeptidesβ content in hypothalamic arcuate nucleus are observed in the rats with arterial hypertension which are characterized by a decrease in the brain natriuretic peptide, Ξ²-endorphin and angiotensin II content with a significant increase in neurotensin content regardless of arterial hypertension etiology and pathogenesis. The peculiarities of the balance between depressor and pressor substances depend on the etiopathogenetic mechanisms β with the endocrine-salt model of arterial hypertension there is a significant predominance of depressor neuropeptides (in 4.3 times) whereas in essential hypertension this balance is similar to the control.
2. The changes of the NOS isoform ratio in the arcuate nucleus of hypothalamus are unidirectional, both with endocrine-salt model of arterial hypertension and essential hypertension β the content of eNOS decreases while nNOS and iNOS content increases
Data acquisition system for the MuLan muon lifetime experiment
We describe the data acquisition system for the MuLan muon lifetime
experiment at Paul Scherrer Institute. The system was designed to record muon
decays at rates up to 1 MHz and acquire data at rates up to 60 MB/sec. The
system employed a parallel network of dual-processor machines and repeating
acquisition cycles of deadtime-free time segments in order to reach the design
goals. The system incorporated a versatile scheme for control and diagnostics
and a custom web interface for monitoring experimental conditions.Comment: 19 pages, 8 figures, submitted to Nuclear Instruments and Methods
Π‘ΡΡΠ°ΡΠ½Ρ Π½Π°ΠΏΡΡΠΌΠΊΠΈ ΡΡΠ²ΠΎΡΠ΅Π½Π½Ρ ΡΠ° ΡΠ΄ΠΎΡΠΊΠΎΠ½Π°Π»Π΅Π½Π½Ρ ΠΏΡΠΎΠ±ΡΠΎΡΠΈΠΊΡΠ²
The article describes the topical areas of improvement of probiotics, such as: study of the physiology of promising industrial strains in order to select nutrient media for their cultivation; Β determination of sorption processes of probiotic bacteria as a general biological process; study of the role of metabolic products and biologically active substances of microbial cells to define the nature of the adhesins and the mechanism of antagonistic activity; development of technology for the manufacture of complex products based on consortia of bacteria with a wide spectrum of antagonistic activity; research and synergistic inhibitory effects of various species and strains of probiotic bacteria; improved methods of control of antagonistic activity of preparations containing viable microbial cells and the development of methods for the determination of living organisms and the development of drugs for the correction of the intestinal microflora is not only, but also other open cavities of the human body.Π‘ΡΠ°ΡΡΡ ΠΏΠΎΡΠ²ΡΡΠ΅Π½Π° Π°ΠΊΡΡΠ°Π»ΡΠ½ΡΠΌ Π½Π°ΠΏΡΠ°Π²Π»Π΅Π½ΠΈΡΠΌ ΡΡΠΎΠ²Π΅ΡΡΠ΅Π½ΡΡΠ²ΠΎΠ²Π°Π½ΠΈΡ ΠΏΡΠΎΠ±ΠΈΠΎΡΠΈΠΊΠΎΠ², ΡΠ°ΠΊΠΈΠΌ ΠΊΠ°ΠΊ:Β ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ ΡΠΈΠ·ΠΈΠΎΠ»ΠΎΠ³ΠΈΠΈ ΠΏΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ²Π½ΡΡ
ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΡΡΠ²Π΅Π½Π½ΡΡ
ΡΡΠ°ΠΌΠΌΠΎΠ² Π±Π°ΠΊΡΠ΅ΡΠΈΠΉ Ρ ΡΠ΅Π»ΡΡ ΠΏΠΎΠ΄Π±ΠΎΡΠ° ΠΏΠΈΡΠ°ΡΠ΅Π»ΡΠ½ΡΡ
ΡΡΠ΅Π΄ Π΄Π»Ρ ΠΈΡ
ΠΊΡΠ»ΡΡΠΈΠ²ΠΈΡΠΎΠ²Π°Π½ΠΈΡ;Β ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ ΠΏΡΠΎΡΠ΅ΡΡΠΎΠ² ΡΠΎΡΠ±ΡΠΈΠΈ ΠΏΡΠΎΠ±ΠΈΠΎΡΠΈΡΠ΅ΡΠΊΠΈΡ
Π±Π°ΠΊΡΠ΅ΡΠΈΠΉ ΠΊΠ°ΠΊ ΠΎΠ±ΡΠ΅Π±ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΏΡΠΎΡΠ΅ΡΡΠ°;Β ΠΈΠ·ΡΡΠ΅Π½ΠΈΠ΅ ΡΠΎΠ»ΠΈ ΠΏΡΠΎΠ΄ΡΠΊΡΠΎΠ² ΠΌΠ΅ΡΠ°Π±ΠΎΠ»ΠΈΠ·ΠΌΠ° ΠΈ ΠΠΠ ΠΌΠΈΠΊΡΠΎΠ±Π½ΠΎΠΉ ΠΊΠ»Π΅ΡΠΊΠΈ Π΄Π»Ρ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ ΠΏΡΠΈΡΠΎΠ΄Ρ Π°Π΄Π³Π΅Π·ΠΈΠ½ΠΎΠ² ΠΈ ΠΌΠ΅Ρ
Π°Π½ΠΈΠ·ΠΌΠ° Π°Π½ΡΠ°Π³ΠΎΠ½ΠΈΡΡΠΈΡΠ΅ΡΠΊΠΎΠΉ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ; Β ΡΠ°Π·ΡΠ°Π±ΠΎΡΠΊΠ° ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΠΉ ΠΈΠ·Π³ΠΎΡΠΎΠ²Π»Π΅Π½ΠΈΡ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠ½ΡΡ
ΠΏΡΠ΅ΠΏΠ°ΡΠ°ΡΠΎΠ² Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ ΠΊΠΎΠ½ΡΠΎΡΡΠΈΡΠΌΠΎΠ² Π±Π°ΠΊΡΠ΅ΡΠΈΠΉ Ρ ΡΠΈΡΠΎΠΊΠΈΠΌ ΡΠΏΠ΅ΠΊΡΡΠΎΠΌ Π°Π½ΡΠ°Π³ΠΎΠ½ΠΈΡΡΠΈΡΠ΅ΡΠΊΠΎΠΉ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ;Β ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ ΡΠΈΠ½Π΅ΡΠ³ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΈ ΠΈΠ½Π³ΠΈΠ±ΠΈΡΠΎΡΠ½ΠΎΠ³ΠΎ Π΄Π΅ΠΉΡΡΠ²ΠΈΡ ΡΠ°Π·Π½ΡΡ
Π²ΠΈΠ΄ΠΎΠ² ΠΈ ΡΡΠ°ΠΌΠΌΠΎΠ² ΠΏΡΠΎΠ±ΠΈΠΎΡΠΈΡΠ΅ΡΠΊΠΈΡ
Π±Π°ΠΊΡΠ΅ΡΠΈΠΉ;Β ΡΡΠΎΠ²Π΅ΡΡΠ΅Π½ΡΡΠ²ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ² ΠΊΠΎΠ½ΡΡΠΎΠ»Ρ Π°Π½ΡΠ°Π³ΠΎΠ½ΠΈΡΡΠΈΡΠ΅ΡΠΊΠΎΠΉ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΠΏΡΠ΅ΠΏΠ°ΡΠ°ΡΠΎΠ², Β ΠΊΠΎΡΠΎΡΡΠ΅ ΡΠΎΠ΄Π΅ΡΠΆΠ°Ρ ΠΆΠΈΠ·Π½Π΅ΡΠΏΠΎΡΠΎΠ±Π½ΡΠ΅Β ΠΌΠΈΠΊΡΠΎΠ±Π½ΡΠ΅ ΠΊΠ»Π΅ΡΠΊΠΈ ΠΈ ΡΠ°Π·ΡΠ°Π±ΠΎΡΠΊΠ° ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ² ΠΈΡ
ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ;Β ΡΠΎΠ·Π΄Π°Π½ΠΈΠ΅ ΠΏΡΠ΅ΠΏΠ°ΡΠ°ΡΠΎΠ² Π΄Π»Ρ ΠΊΠΎΡΡΠ΅ΠΊΡΠΈΠΈ ΠΌΠΈΠΊΡΠΎΡΠ»ΠΎΡΡ Π½Π΅ ΡΠΎΠ»ΡΠΊΠΎ ΠΊΠΈΡΠ΅ΡΠ½ΠΈΠΊΠ°, Π½ΠΎ ΠΈ Π΄ΡΡΠ³ΠΈΡ
ΠΎΡΠΊΡΡΡΡΡ
ΠΏΠΎΠ»ΠΎΡΡΠ΅ΠΉ ΠΎΡΠ³Π°Π½ΠΈΠ·ΠΌΠ° ΡΠ΅Π»ΠΎΠ²Π΅ΠΊΠ°.Β Π‘ΡΠ°ΡΡΡ ΠΏΡΠΈΡΠ²ΡΡΠ΅Π½Π° Π°ΠΊΡΡΠ°Π»ΡΠ½ΠΈΠΌ Π½Π°ΠΏΡΡΠΌΠΊΠ°ΠΌ ΡΠ΄ΠΎΡΠΊΠΎΠ½Π°Π»Π΅Π½Π½Ρ ΠΏΡΠΎΠ±ΡΠΎΡΠΈΠΊΡΠ², ΡΠ°ΠΊΠΈΠΌ ΡΠΊ:Β Π΄ΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½Π½Ρ ΡΡΠ·ΡΠΎΠ»ΠΎΠ³ΡΡ ΠΏΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ²Π½ΠΈΡ
Π²ΠΈΡΠΎΠ±Π½ΠΈΡΠΈΡ
ΡΡΠ°ΠΌΡΠ² Π· ΠΌΠ΅ΡΠΎΡ ΠΏΡΠ΄Π±ΠΎΡΡ ΠΏΠΎΠΆΠΈΠ²Π½ΠΈΡ
ΡΠ΅ΡΠ΅Π΄ΠΎΠ²ΠΈΡ Π΄Π»Ρ ΡΡ
ΠΊΡΠ»ΡΡΠΈΠ²ΡΠ²Π°Π½Π½Ρ;Β Π²ΠΈΠ·Π½Π°ΡΠ΅Π½Π½Ρ ΠΏΡΠΎΡΠ΅ΡΡΠ² ΡΠΎΡΠ±ΡΡΡ ΠΏΡΠΎΠ±ΡΠΎΡΠΈΡΠ½ΠΈΡ
Π±Π°ΠΊΡΠ΅ΡΡΠΉ ΡΠΊ Π·Π°Π³Π°Π»ΡΠ½ΠΎΠ±ΡΠΎΠ»ΠΎΠ³ΡΡΠ½ΠΎΠ³ΠΎ ΠΏΡΠΎΡΠ΅ΡΡ;Β Π²ΠΈΠ²ΡΠ΅Π½Π½Ρ ΡΠΎΠ»Ρ ΠΏΡΠΎΠ΄ΡΠΊΡΡΠ² ΠΌΠ΅ΡΠ°Π±ΠΎΠ»ΡΠ·ΠΌΡ ΡΠ° Π±ΡΠΎΠ»ΠΎΠ³ΡΡΠ½ΠΎ Π°ΠΊΡΠΈΠ²Π½ΠΈΡ
ΡΠ΅ΡΠΎΠ²ΠΈΠ½ ΠΌΡΠΊΡΠΎΠ±Π½ΠΎΡ ΠΊΠ»ΡΡΠΈΠ½ΠΈ Π΄Π»Ρ Π²ΠΈΠ·Π½Π°ΡΠ΅Π½Π½Ρ ΠΏΡΠΈΡΠΎΠ΄ΠΈ Π°Π΄Π³Π΅Π·ΠΈΠ½ΡΠ² Ρ ΠΌΠ΅Ρ
Π°Π½ΡΠ·ΠΌΡ Π°Π½ΡΠ°Π³ΠΎΠ½ΡΡΡΠΈΡΠ½ΠΎΡ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ; Β ΡΠΎΠ·ΡΠΎΠ±ΠΊΠ° ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΡΡ Π²ΠΈΠ³ΠΎΡΠΎΠ²Π»Π΅Π½Π½Ρ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠ½ΠΈΡ
ΠΏΡΠ΅ΠΏΠ°ΡΠ°ΡΡΠ² Π½Π° ΠΎΡΠ½ΠΎΠ²Ρ ΠΊΠΎΠ½ΡΠΎΡΡΡΡΠΌΡΠ² Π±Π°ΠΊΡΠ΅ΡΡΠΉ Π· ΡΠΈΡΠΎΠΊΠΈΠΌ ΡΠΏΠ΅ΠΊΡΡΠΎΠΌ Π°Π½ΡΠ°Π³ΠΎΠ½ΡΡΡΠΈΡΠ½ΠΎΡ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ;Β Π΄ΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½Π½Ρ ΡΠΈΠ½Π΅ΡΠ³ΡΡΠ½ΠΎΡ ΡΠ° ΡΠ½Π³ΡΠ±ΡΡΠΎΡΠ½ΠΎΡ Π΄ΡΡ ΡΡΠ·Π½ΠΈΡ
Π²ΠΈΠ΄ΡΠ² ΡΠ° ΡΡΠ°ΠΌΡΠ² ΠΏΡΠΎΠ±ΡΠΎΡΠΈΡΠ½ΠΈΡ
Π±Π°ΠΊΡΠ΅ΡΡΠΉ;Β Π²Π΄ΠΎΡΠΊΠΎΠ½Π°Π»Π΅Π½Π½Ρ ΠΌΠ΅ΡΠΎΠ΄ΡΠ² ΠΊΠΎΠ½ΡΡΠΎΠ»Ρ Π°Π½ΡΠ°Π³ΠΎΠ½ΡΡΡΠΈΡΠ½ΠΎΡ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ ΠΏΡΠ΅ΠΏΠ°ΡΠ°ΡΡΠ², ΡΠΎ ΠΌΡΡΡΡΡΡ ΠΆΠΈΡΡΡΠ·Π΄Π°ΡΠ½Ρ ΠΌΡΠΊΡΠΎΠ±Π½Ρ ΠΊΠ»ΡΡΠΈΠ½ΠΈ ΡΠ° ΡΠΎΠ·ΡΠΎΠ±ΠΊΠ° ΠΌΠ΅ΡΠΎΠ΄ΡΠ² Π²ΠΈΠ·Π½Π°ΡΠ΅Π½Π½Ρ Π²ΠΌΡΡΡΡ ΠΆΠΈΠ²ΠΈΡ
ΠΌΡΠΊΡΠΎΠΎΡΠ³Π°Π½ΡΠ·ΠΌΡΠ²;Β ΡΠΎΠ·ΡΠΎΠ±ΠΊΠ° ΠΏΡΠ΅ΠΏΠ°ΡΠ°ΡΡΠ² Π΄Π»Ρ ΠΊΠΎΡΠ΅ΠΊΡΡΡ ΠΌΡΠΊΡΠΎΡΠ»ΠΎΡΠΈ Π½Π΅ Π»ΠΈΡΠ΅ ΠΊΠΈΡΠ΅ΡΠ½ΠΈΠΊΡ, Π° ΠΉ ΡΠ½ΡΠΈΡ
Π²ΡΠ΄ΠΊΡΠΈΡΠΈΡ
ΠΏΠΎΡΠΎΠΆΠ½ΠΈΠ½ ΠΎΡΠ³Π°Π½ΡΠ·ΠΌΡ Π»ΡΠ΄ΠΈΠ½ΠΈ.
Development dynamics and cognitive-semantic parameters of English ditransitive construction: verification from the perspective of corpus linguistics
The relevance of the paper is substantiated by the representation of the analysis of utterances generated on the template of ditransitive construction via the methods of cognitive and corpus linguistics. The set of issues raised by the authors consists in the necessity of looking out for valid reasons and sufficient evidence which confirm that analytical tools of linguistic corpus possess all the necessary resources and effective toolkit to single out the true phenomena of languag
Effectiveness of different systems of liquid feeding of piglets for additional growing in the conditions of industrial technology
The article, a comparative analysis of the productivity of piglets during rearing under a liquid feeding system with fodder mixtures, which were mixed in the feed containers of the Hydro Mix Pro feeding system of the Big Dutchmen company and with the help of the portioned feeding system Spotmix II of the Austrian company Schauer, is made. It was found that the preparation and distribution of feed using the Spotmix II portioned feeding system resulted in 1.5 % better piglet survival, 9.6 % higher piglet growth rate during rearing, 9.5 % higher absolute gains during this period, higher by 7.3 % of the weight of animals when transferred to fattening compared to analogs that were raised on liquid feeding with feed mixing in feed tanks. It has been proven that piglets that were prepared, transported, and distributed feed using the Spotmix II system consumed 6.0 % more feed per day, consumed 7.0 % more during the period, the cost of which was 10.6 % higher. Meanwhile, their feed conversion was 2.3 % better, with almost the exact feed cost per kilogram gain. The feeding of piglets in growing-out using the Spotmix II portioned liquid feeding system led to a 10.6 % higher cost of feed, a 22.1 % higher amortization costs for the equipment for feed distribution and animal feeding, a 9.6 % higher cost of the growing-out process of one pig, and its cost price at the end of the growing period is 3.4 times higher. At the same time, such feeding contributed to higher growth energy of animals during rearing, which caused a 7.3 % higher sales price of piglets, a 17.3 % higher profit from the sale of one head, and a 5.2 % higher profitability of rearing piglets compared to liquid feeding using Hydro Mix Pro system with feed mixing in feed tanks
Measurement of the Rate of Muon Capture in Hydrogen Gas and Determination of the Proton's Pseudoscalar Coupling
The rate of nuclear muon capture by the proton has been measured using a new
experimental technique based on a time projection chamber operating in
ultra-clean, deuterium-depleted hydrogen gas at 1 MPa pressure. The capture
rate was obtained from the difference between the measured
disappearance rate in hydrogen and the world average for the decay
rate. The target's low gas density of 1% compared to liquid hydrogen is key to
avoiding uncertainties that arise from the formation of muonic molecules. The
capture rate from the hyperfine singlet ground state of the atom is
measured to be , from which the induced
pseudoscalar coupling of the nucleon, , is
extracted. This result is consistent with theoretical predictions for
that are based on the approximate chiral symmetry of QCD.Comment: submitted to Phys.Rev.Let
Measurement of Muon Capture on the Proton to 1% Precision and Determination of the Pseudoscalar Coupling g_P
The MuCap experiment at the Paul Scherrer Institute has measured the rate L_S
of muon capture from the singlet state of the muonic hydrogen atom to a
precision of 1%. A muon beam was stopped in a time projection chamber filled
with 10-bar, ultra-pure hydrogen gas. Cylindrical wire chambers and a segmented
scintillator barrel detected electrons from muon decay. L_S is determined from
the difference between the mu- disappearance rate in hydrogen and the free muon
decay rate. The result is based on the analysis of 1.2 10^10 mu- decays, from
which we extract the capture rate L_S = (714.9 +- 5.4(stat) +- 5.1(syst)) s^-1
and derive the proton's pseudoscalar coupling g_P(q^2_0 = -0.88 m^2_mu) = 8.06
+- 0.55.Comment: Updated figure 1 and small changes in wording to match published
versio
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