Artículos de revistas: "Effet Gorsky"

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Grevtsova, S. A., E. I. Rekhviashvili, M. K. Ailyarova, M. Yu Kabulova y I. E. Soldatova. "BIOTECHNOLOGY OF PRODUCTION OF YEAST-FREE BREAD USING THE LOCAL STREPTOCOCCUS THERMOPHILUS STRAIN BREEDED BY GORSK GAU AND WILD HOP IN RNO-ALANIA". Innovations and Food Safety, n.º 4 (20 de marzo de 2021): 28–34. http://dx.doi.org/10.31677/2072-6724-2020-30-4-28-34.

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The modern food industry offers the consumer bread baked with sourdough using various biologically active components of plant origin. In the production of yeast-free bread, it is advisable to use a sourdough from biologically active strains of Streptococcus thermophilus selected by the Gorsk State Agricultural University. The authors have compiled a starter culture from local strains of lactic acid microorganisms selected by the Research Institute of Biotechnology of the Gorsky State Agrarian University. Research was carried out at the Department of Biological and Chemical Technology of the Gorsky State Agrarian University. We also used cones of wild-growing hops from the botanical garden of the Gorsky State Agrarian University in order that the bitter acids present in the hops suppress the putrefactive microflora, do not have a detrimental effect on local strains of lactic acid microorganisms and allow increasing the productivity of the hop starter culture. Yeast-free bread is easily absorbed by the body, does not harm the intestinal microflora, retains useful properties during storage. The flour used in the experiment met the requirements of GOST 26574–85. When using wild-growing hops in the production of bread, useful substances included in its composition were determined that could increase the quality and safety of bread. The content of alpha acids was 6.0%, and that of essential oils was 0.7%, which corresponds to GOST 32912–2014. We used two strains of a lactic acid microorganism of local selection – Streptococcus thermophilus. Hops were extracted for 30 min at a temperature of 96 °C. Laboratory baking of bread was carried out in accordance with GOST 27669–88. Studies have shown that bread prepared using a local strain of Streptococcus thermophilus selected by the Gorsky State Agricultural University and wild-growing hops is of high quality.

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2

Sinning, H. R. "The intercrystalline Gorsky effect". Materials Science and Engineering: A 370, n.º 1-2 (abril de 2004): 109–13. http://dx.doi.org/10.1016/j.msea.2003.08.091.

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3

Mugishima, T., M. Yamada y O. Yoshinari. "Gorsky effect in Ta–O–H alloys". Materials Science and Engineering: A 442, n.º 1-2 (diciembre de 2006): 114–18. http://dx.doi.org/10.1016/j.msea.2006.03.121.

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4

Mizubayashi, H., S. Odai y S. Okuda. "Hydrogen Gorsky effect in amorphous Cu50 Ti50". Acta Metallurgica et Materialia 42, n.º 2 (febrero de 1994): 561–68. http://dx.doi.org/10.1016/0956-7151(94)90510-x.

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5

Gulati, Mitu y Ugo Panizza. "The Hausmann–Gorky Effect". Journal of Business Ethics 166, n.º 1 (2 de marzo de 2019): 175–95. http://dx.doi.org/10.1007/s10551-019-04132-9.

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6

Kandasamy, K. "Important Gorsky effect influences on diffusion coefficients in metal–hydrogen systems". International Journal of Hydrogen Energy 24, n.º 8 (agosto de 1999): 763–69. http://dx.doi.org/10.1016/s0360-3199(98)00125-6.

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7

Verbruggen, A. H., R. C. van den Heuvel, R. Griessen y H. U. Künzi. "Gorsky effect measurements on amorphous Pd80Si20HX between 290 and 490 K". Scripta Metallurgica 19, n.º 3 (marzo de 1985): 323–28. http://dx.doi.org/10.1016/0036-9748(85)90323-0.

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8

Lewis, F. A., X. Q. Tong y R. V. Bucur. "Permeation of Hydrogen through Palladium-Silver Membranes". Platinum Metals Review 35, n.º 3 (1 de julio de 1991): 138–40. http://dx.doi.org/10.1595/003214091x353138140.

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The hydrogen content gradients that occur during hydrogen permeation through palladium-silver membranes produce complementary strain gradients of lattice expansion, which induce opposing Gorsky Effect components of Diffusion Flux. A body of observations of related “uphill effects” and allied diffusion phenomena have recently been studied, using sheet and tube membranes; these phenomena have been correlated with hydrogen pressure-hydrogen content relationships of the Pd77Ag23Hn system.

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9

Mugishima, T., M. Yamada y O. Yoshinari. "Study of hydrogen diffusion in Nb–Ta alloys by Gorsky effect measurement". Materials Science and Engineering: A 442, n.º 1-2 (diciembre de 2006): 119–23. http://dx.doi.org/10.1016/j.msea.2006.03.128.

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10

Lewis, F. A. y X. Q. Tong. "Gorsky effect origins of uphill hydrogen diffusion in Pd81Pt19, Pd77Ag23 and palladium membranes". Journal of Alloys and Compounds 179, n.º 1-2 (febrero de 1992): L13—L19. http://dx.doi.org/10.1016/0925-8388(92)90195-f.

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11

Valeeva A. R., Kaptelov E. Yu., Senkevich S. V., Pronin I. P., Nemov S. A. y Pronin V. P. "An influence of mechanical stresses on the magnitude of the internal field in lead zirconate titanate thin films". Technical Physics Letters 48, n.º 8 (2022): 37. http://dx.doi.org/10.21883/tpl.2022.08.55058.19218.

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In self-polarized lead zirconate titanate thin films formed on platinized silicon substrates, a significant increase in the internal electric field was observed as a result of long-term aging. To explain this phenomenon, a mechanism is proposed for the formation of the internal field associated with the diffusion of charged oxygen vacancies, which, in turn, is due to the action of a mechanical stress gradient. The diffusion coefficient of charged oxygen vacancies was estimated to be ~ 3·10-16 cm2/s. Keywords: thin films, lead zirconate titanate, internal field, Gorsky effect.

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12

Lewis, F. A., X. Q. Tong, K. Kandasamy, R. V. Bucur y Y. Sakamoto. "Gorsky effect consequences of lattice expansive strain gradients in diffusion of hydrogen in metals". Thermochimica Acta 218 (mayo de 1993): 57–69. http://dx.doi.org/10.1016/0040-6031(93)80411-3.

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13

Zaitsev, V. Yu, V. Gusev y B. Castagnède. "Observation of the “Luxemburg–Gorky effect” for elastic waves". Ultrasonics 40, n.º 1-8 (mayo de 2002): 627–31. http://dx.doi.org/10.1016/s0041-624x(02)00187-7.

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14

Plotnikova, A. G. "V. I. Nilov is “a very modest man and an exceptionally serious scientist” (concerning one comment in M. Gorky’s letter to I. V. Stalin)". Proceedings on applied botany, genetics and breeding 181, n.º 4 (27 de enero de 2021): 222–27. http://dx.doi.org/10.30901/2227-8834-2020-4-222-227.

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This publication explores the history of personal contacts and correspondence between the distinguished biochemist V. I. Nilov and the writer Maxim Gorky in 1933–1936. Through out his life, M. Gorky tried to use his influence to help talented scientists as well as scientific and cultural institutions. In 1933, V. I. Nilov, a researcher from the Nikita Botanical Gardens, wrote to Gorky about the experiments he performed in his biochemistry lab on the synthesis of vitamin C, plant breeding for chemical composition, and isolation of opiates from poppy. The writer appealed to the USSR top officials, intending to improve the situation with scientific institutions in Crimea. As a result of Gorky’s mediation efforts, Nilov’s documents were presented to I. V. Stalin. The leaders of the USSR were interested in such research, because it complied with the country’s strategic objectives. This, in its turn, led to changes in vitamin research and production in the USSR and had an effect on the status of the Nikita Botanical Gardens. V. I. Nilov’s scientific biography was closely interlinked with the history of the Institute of Plant Industry and its director N. I. Vavilov. By this publication, earlier unknown materials from the Archive of A.M. Gorky (Institute of World Literature, Moscow) and the Russian State Archive of Socio-Political History (Moscow) are for the first time introduced into public scientific discourse.

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15

Pastukhov, E. A., A. A. Vostrjakov, N. I. Sidorov y V. P. Chentsov. "Hydrogen and Electric Field Effect on Iron Impurities Removal from Molten Zirconium". Defect and Diffusion Forum 322 (marzo de 2012): 175–83. http://dx.doi.org/10.4028/www.scientific.net/ddf.322.175.

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Hydrogen and iron diffusion coefficients in molten zirconium have been calculated using a molecular dynamics (МD) model. The molecular dynamics method using micro-canonical (NVT) ensemble was used to analyze iron and zirconium diffusion coefficient dependence on electric field intensity and the presence of hydrogen in the zirconium melt. Results obtained are compared to the literature data on impurity removal in plasma-arc zirconium melting in the presence of hydrogen as well as in electron-beam and vacuum-arc melting. The limiting stage of iron removal from the melt is established. The contribution of the electric field to iron removal is estimated. We carried out systematization of the DHMedata for Zr, Nb, and Ta. An Arrhenius equation analysis for DHMeand its extrapolation to the premelting zone taking into account the Gorsky effect was carried out too. The analysis enabled the estimation of DHMefor the temperature interval where experiment encounters difficulties.

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16

Curyło, Mateusz, Tomasz Urbański, Agnieszka Ciukszo, Katarzyna Placek, Dariusz Lusina, Marcin Mikos y Jan W. Raczkowski. "Sacro-lumbar orthosis in lower back pain syndromes – literature review". Fizjoterapia Polska 22, n.º 3 (30 de agosto de 2022): 164–68. http://dx.doi.org/10.56984/8zg142r1m.

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Purpose of study. The purpose of this study is to analyze the effect of sacral-lumbar orthoses on the occurrence of pain in patients with low back pain (LBP) and the effects of these orthoses on the muscles that stabilize the trunk based on the available literature. Methods. For the purpose of this study, the following databases were searched: Pubmed, Scopus, ScienceDirect, Medline, and others using the Google Scholar search engine using the following keywords: low back pain, lbp exercise, low back pain epidemiology, low back pain orthosis, low back pain therapy, LBP treatment, lumbar sacral orthosis. Results. 26 of the 92 articles searched by the above method were analyzed in relation to the subject of the use of sacral-lumbar orthoses in patients with spinal pain syndrome. The analysis did not show that wearing a corset negatively affects muscle strength. Most current studies recommend using a corset in combination with exercise and/or pharmacotherapy for LBP. Conclusion. There are not enough studies to conclusively determine the effect of lumbar sacral orthoses on the sensation of pain in the lumbar spine. Among the main limitations of the analyzed studies are difficulty in measuring pain, as pain is a subjective sensation, and the significant number of possible causes of LBP, which are sometimes difficult to specify.

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17

Kukushkin, S. A. y A. V. Osipov. "The Gorsky effect in the synthesis of silicon-carbide films from silicon by topochemical substitution of atoms". Technical Physics Letters 43, n.º 7 (julio de 2017): 631–34. http://dx.doi.org/10.1134/s1063785017070094.

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18

Hein, M., A. Bals, A. F. Privalov y H. Wipf. "Gorsky effect study of H and D diffusion in V and Ti at high H(D) concentrations". Journal of Alloys and Compounds 356-357 (agosto de 2003): 318–21. http://dx.doi.org/10.1016/s0925-8388(03)00111-7.

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19

Wipf, H., J. V�lkl y G. Alefeld. "Coherency stresses and diffusion in solids: neutron spectroscopic versus Gorsky effect measurements of deuterium diffusion in niobium". Zeitschrift f�r Physik B Condensed Matter 76, n.º 3 (septiembre de 1989): 353–58. http://dx.doi.org/10.1007/bf01321913.

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20

Osika, M., A. Ziaja–Sujdak, R. Radecki y W. J. Staszewski. "The Luxembourg–Gorky effect for elastic shear horizontal guided waves — Analytical and numerical modelling". International Journal of Engineering Science 193 (diciembre de 2023): 103933. http://dx.doi.org/10.1016/j.ijengsci.2023.103933.

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21

Zaykova, Elena. "Formation methods of hybrid urban spaces in the historic city center". E3S Web of Conferences 97 (2019): 01031. http://dx.doi.org/10.1051/e3sconf/20199701031.

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Russian urban planning practice is experiencing an era of global changes. The appearance of architectural and landscape objects with different types of organization of public spaces in Moscow makes it possible to talk about the transition from standard city planning to objects that have no boundaries between nature, architecture and human environment. Functionally renewed Gorky Park with Crimean Quay and Zaryadye Park represent a new type of public space where nature and technology, education and entertainment, history and modernity are combined and complement each other. New objects have a positive effect on environmental changes using the latest construction technologies, offer citizens a variety of activities and have a powerful scientific resource in working on city aesthetics and ecology. Scientists describe such town-planning objects, as “hybrid spaces”. Hybridization of urban areas encompasses different urban planning levels: from integration of architectural landscape object with border elimination by nature in the historic city center (Zaryadye Park) to formation of the newest linear park with different types of public in the contour of the water area (Gorky Park and Crimean Quay). Due to the high interest of professionals in the new city objects, hybrid spaces deserve to be thoroughly studied, as they influence not only quality of urban environment in the use of landscape architecture tools and technologies, but also issues of managing urbanization and climate change in the near future.

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22

Shan, Shengbo, Yuanman Zhang, Ze Liu, Fuzhen Wen, Li Cheng y Wieslaw J. Staszewski. "Cross-modulation in guided wave propagation: how does it relate to the Luxemburg-Gorky effect?" Journal of Sound and Vibration 568 (enero de 2024): 117961. http://dx.doi.org/10.1016/j.jsv.2023.117961.

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23

Čermák, J., G. Gardavská, A. Kufudakis y P. Lejček. "Diffusion-Elastic Effect — Its Relation to the Gorsky Effect and its Application to Measurements of Diffusivity of Hydrogen in the Crystal Lattice of Nickel with Trapping Sites*". Zeitschrift für Physikalische Chemie 145, n.º 1_2 (enero de 1985): 239–50. http://dx.doi.org/10.1524/zpch.1985.145.1_2.239.

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24

Hutsaylyuk, Volodymyr, Pavlo Maruschak, Ihor Konovalenko, Sergey Panin, Roman Bishchak y Mykola Chausov. "Mechanical Properties of Gas Main Steels after Long-Term Operation and Peculiarities of Their Fracture Surface Morphology". Materials 12, n.º 3 (5 de febrero de 2019): 491. http://dx.doi.org/10.3390/ma12030491.

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Regularities of steel structure degradation of the “Novopskov-Aksay-Mozdok” gas main pipelines (Nevinnomysskaya CS) as well as the “Gorky-Center” pipelines (Gavrilovskaya CS) were studied. The revealed peculiarities of their degradation after long-term operation are suggested to be treated as a particular case of the damage accumulation classification (scheme) proposed by prof. H.M. Nykyforchyn. It is shown that the fracture surface consists of sections of ductile separation and localized zones of micro-spalling. The presence of the latter testifies to the hydrogen-induced embrittlement effect. However, the steels under investigation possess sufficiently high levels of the mechanical properties required for their further safe exploitation, both in terms of durability and cracking resistance.

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25

Gałka, Bernard, Alexandra Novak, Mikhail Novak, Dmitry Vinogradov y Ryszard Polechoński. "Ecological Parameters of Water Bodies in the Northern Part of the Upper Volga Region with River Flow Regulations". Water 13, n.º 24 (14 de diciembre de 2021): 3586. http://dx.doi.org/10.3390/w13243586.

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The regulation of river flow in the Volga basin has caused irreversible changes to aquatic ecosystems. The transformation of the Volga into a cascade of hydraulic structures with a non-flow regime has resulted in a decrease in depth and flow, and an increase in the temperature and concentration of chemical elements, which has induced the process of eutrophication. The change in the species diversity of aquatic organisms under conditions of intense eutrophication was studied on models of water bodies from the Volga basin; the Kostroma section of the Gorky reservoir (Kostroma spill and the middle river section), and lakes Galichskoe and Chukhlomskoe were studied. Rheophilic biocenosis was replaced by a limnophilic one, the migration paths of fish were disrupted, and population characteristics were changed. In accordance with environmental conditions, the level of primary production and the calculated Carlson trophic index (TSI) and Broth-proposed index (ITS) (1987), the water bodies of the northern part of the upper Volga region are classified as follows: the middle river section of the Gorky reservoir is mesotrophic-eutrophic (TSI = 55.2, ITS = 16.2); the Kostroma spill is eutrophic with a tendency to hypertrophy (TSI = 67.4, ITS = 6.8); Lake Galichskoe is eutrophic with a tendency to dystrophy (TSI = 63.2, ITS = 8.4), and Lake Chukhlomskoe is hypertrophic with a tendency to dystrophy (TSI = 77.4, ITS = 8.0). In addition, frequent fluctuations in water level, reaching 1 m, have had an adverse effect on inhabitants of the littoral zone including the spawning fish, which may lead to disappearance of some of the region’s most sensitive species.

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26

Sokolova, A. S., O. L. Tselmovich y D. V. Mikryakov. "Effect of the Concentration of Cations (Ca2+, Mg2+, Na+, and K+) in Water on the Level of Oxidative Processes in the Tissues of Bivalves of the Family Dreissenidae". Экология, n.º 2 (1 de marzo de 2023): 154–60. http://dx.doi.org/10.31857/s0367059723020129.

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The results of studying the influence of the content of Ca2+, Mg2+, Na+, and K+ cations in water on the level of lipid peroxidation products and antioxidants in the tissues of bivalve mollusks, D. bugensis and D. polymorpha, are presented. Mollusks were caught in four water areas of the Gorky Reservoir, which differ in the concentrations of Ca2+, Mg2+, Na+, and K+ cations. A correlation relationship has been established between the quantitative parameters of cations in water and the intensity of peroxide processes, on the one hand, and the level of general antioxidant activity in mollusk tissues, on the other. Statistically significant interspecific differences in the studied parameters have been recorded in mollusks from areas with an increased concentration of cations.

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27

Fässler, Sascha M. M. y Natalia Gorska. "On the target strength of Baltic clupeids". ICES Journal of Marine Science 66, n.º 6 (3 de febrero de 2009): 1184–90. http://dx.doi.org/10.1093/icesjms/fsp005.

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Abstract Fässler, S. M. M., and Gorska, N. 2009. On the target strength of Baltic clupeids. – ICES Journal of Marine Science, 66: 1184–1190. The acoustic backscattering of Baltic clupeids, herring and sprat, is explored to improve biomass estimation of these ecologically and commercially important species. Modelling approaches that account for the complexity of fish morphology are used to compute the mean backscattering cross section. The input data for modelling are based on X-ray radiographs of Baltic herring and sprat. The backscatter sensitivity to fish morphology and to other biological (fat content), acoustic (frequency), behavioural (orientation pattern), and environmental (depth and salinity) parameters is also analysed. The effect of various parameters on the TS–L relationship of Baltic clupeids is studied, and the possibility of using the same TS–L relationships for Baltic herring and sprat is discussed. The results improve the understanding of the spatial and temporal variability of the measured target strength of clupeids in the Baltic Sea.

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28

Zaitsev, V. Yu, V. E. Nazarov, V. Tournat, V. E. Gusev y B. Castagnède. "Luxemburg-Gorky effect in a granular medium: Probing perturbations of the material state via cross-modulation of elastic waves". Europhysics Letters (EPL) 70, n.º 5 (junio de 2005): 607–13. http://dx.doi.org/10.1209/epl/i2005-10023-5.

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29

Gerasimov, Yu V., S. E. Bolotov, A. I. Tsvetkov y E. S. Borisenko. "Abundance, Distribution and Mortality of Hydrobionts in the Section of the Gorky Reservoir Affected by Heated Waters of the Kostroma Hydroelectric Power Plant". Биология внутренних вод, n.º 6 (1 de noviembre de 2023): 747–61. http://dx.doi.org/10.31857/s0320965223060116.

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The study was conducted in the river section of the Gorky reservoir in the zone affected by the heated water discharge from the Kostroma hydroelectric power plant during the growing season (May–November) 2021. The reduced species richness was observed in the sites of the maximum water heating, which, however, quickly returned to the initial values in the downstream section of the river. The lethal effect of warm waters on zooplankton is mainly manifested in the summer, when the natural warming of the river waters is influenced by the heated water discharge from the Kostroma hydroelectric power plant. In autumn, the warming effect of heated waters, on the contrary, promotes better survival of organisms. Fish reach a high abundance in the study area by the end of summer, when the grown juvenile sleave shallow waters. In the autumn period, the fish redistribution and a significant increase in the abundance occur in the area of heated waters compared to the back ground sites. The results obtained indicate the absence of an environmentally significant lethal effect. Local plankton losses are quickly compensated due to high reproduction rates and short-cycle development of invertebrates. The lethal effect of exposure to high temperatures on fish was not found.

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30

ABINAWANTO, ABINAWANTO y PRAMITA EKA PUTRI. "Goramy spermatozoa quality after sub-zero freezing: The role of coconut water as the cryoprotectant". Cell Biology and Development 1, n.º 1 (16 de junio de 2017): 1–5. http://dx.doi.org/10.13057/cellbioldev/v010101.

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Abinawanto, Putri PE. 2017. Goramy spermatozoa quality after sub-zero freezing: The role of coconut water as thecryoprotectant. Cell Biol Dev 1: 1-5. The coconut water effect combined with 5% of glycerol for preserving goramy spermatozoa at -34Â°C for 48 hours has been studied. The objective of study is to find the best combination among 0%, 21%, 23%, 25% 27%, and 29%,respectively, of coconut water combined with 5% of glycerol for maintaining the good spermatozoa motility and viability, andminimizing spermatozoa abnormality. One part of semen/sperm were mixed with three parts of solvent (5% of glycerol + fish ringer +coconut water), and were equilibrated at 4 Â°C for 45 min. The diluted sperm were then freezed at -34 Â°C for 48 h. Cryopreserved spermswere thawed at 30 Â°C for 3-5 min. Spermatozoa quality were evaluated before and after sub-zero freezing. Based on Kruskal-Wallis test,spermatozoa motility and viability were higher than control (P<0.05), while the spermatozoa abnormality were not significantlydifferent compared to control (P>0.05). Twenty five percent of coconut water combined with 5% of glycerol were the best combinationfor preserving spermatozoa motility (80.36Â±1.54)% and spermatozoa viability (82Â±1.86)%, and also minimized spermatozoaabnormality (10Â±1.03)%.

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31

Rodionova, P. M., A. S. Turchaninova, S. A. Sokratov, Yu G. Seliverstov y T. G. Glazovskaya. "Methods of accounting the avalanche hazard for the territorial land-use planning in Russia". Ice and Snow 59, n.º 2 (11 de junio de 2019): 245–57. http://dx.doi.org/10.15356/2076-6734-2019-2-398.

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The legislation of the Russian Federation establishes the need to take into account hazardous natural processes and their parameters in territorial planning, as well as presentation of them in the relevant documentation in the form of maps. In a number of countries, there is a long-standing practice of mapping the avalanche zones basing on the definition of different levels of danger, which are used to limit or ban the construction in avalanche zones, as well as to project the anti-avalanche activities. Russia has experience in assessing risk and mapping the avalanche danger, but the practice of making such plans in our country is still not developed. The purpose of this work is to determine and plot on map avalanche zones on the example of one of the actively developed mountain regions of Russia. The all-season mountain resort «Gorky Gorod», located on Krasnaya Polyana in the Krasnodar region, was chosen as the object of study. Two approaches to the accounting and mapping of avalanche hazard in territorial planning were tested. In the first case, occurrence and pressure of avalanches were the determining factors. In the second case, critical avalanche pressure values were used to determine their destructive impact effect. To determine indexes (indicators) of the avalanche hazard, the simulation of snow avalanches in the RAMMS program was performed. According to the results of modeling for area of the «Gorky Gorod» resort schemes of the avalanche zones were constructed on the basis of two different approaches, having no account for the anti-avalanche measures used there. A more detailed plan based on a combination of these two approaches had also been drawn up and analyzed. The required criteria for determining the boundaries of zones with different levels of the danger are the subject for discussion. However, the proposed division of avalanchedangerous territory into zones with different levels of the hazard at the stage of territorial planning meets the requirements of the legislation and contributes to improving human security, reducing the avalanche risk, and mitigating the consequences of emergencies caused by avalanches.

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32

Gorska, Natalia y Egil Ona. "Modelling the effect of swimbladder compression on the acoustic backscattering from herring at normal or near-normal dorsal incidences". ICES Journal of Marine Science 60, n.º 6 (1 de enero de 2003): 1381–91. http://dx.doi.org/10.1016/s1054-3139(03)00142-5.

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Abstract Inaccuracy in herring target strength can be an important source of bias in the acoustic assessment of several important herring stocks. New acoustic data on herring target strength (Ona et al., 2001, submitted for publication; Ona, 2003) confirm previous suggestions and evidence on a possible reduction of the size of the herring swimbladder as a result of its compression with increasing water depth. Theoretical work for a better understanding of the acoustic scattering from herring over its entire depth distribution may therefore be essential for improving abundance estimation. This study supplements the analysis, conducted by Gorska and Ona (2003) for herring averaged-backscattering cross-section. The modal-based, deformed-cylinder model (MB-DCM) solutions, presented in that paper, are used. The sensitivity of the herring backscattering cross-section in case of normal or near-normal dorsal incidences is studied with respect to frequency, contraction factors of the swimbladder dimensions and some fish morphological parameters. The study is important for a better understanding of not only the backscattering by individual fish for the dorsal incidence, but also the depth- and frequency-dependencies of the mean-backscattering cross-section. The theoretical results have been applied in the interpretation of the actual measured target-strength data on adult herring.

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Imaniy, A. N., M. Lamid y D. S. Budi. "The effects of exogenous dietary enzyme on the growth of giant gourami (Osphronemus goramy)". IOP Conference Series: Earth and Environmental Science 1036, n.º 1 (1 de julio de 2022): 012108. http://dx.doi.org/10.1088/1755-1315/1036/1/012108.

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Abstract The commercial complex enzymes containing protease, lipase, and amylase are potentially used for exogenous dietary enzymes on giant gourami (Osphronemus goramy) as growth booster indirectly. The aims of this study are to know the effect of the exogenous dietary enzymes on giant gourami growth and to obtain the optimal dose of this enzyme. The research was conducted on January-April 2019 in the aquaculture facility and laboratory of Universitas Airlangga, Banyuwangi Campus. A total of 200 giant gourami juveniles (5.5 ± 0.5 cm in total length) were obtained from the fish hatchery centre of Kabat, Banyuwangi, Indonesia. All fish was divided into 20 glass aquaria (40 x 30 x 30 cm3) and reared for 40 days with exogenous dietary enzyme treatments in the diets following: control (no enzyme), 2.5 ml/100 g feed, 5.0 ml/100 g feed, 7.5 ml/100 g feed, 10.0 ml/100 g feed (4 replication in each treatment). The parameters were observed in this study are daily growth rate (DGR), specific growth rate (SGR), and feed conversion ratio (FCR). The exogenous dietary enzyme significantly (P < 0.05) effect to all parameters, the best result was showed in 10.0 ml/100 g feed treatment as optimum applicate dose.

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Tatang, Tatang, Maheno Sriwidodo y Harsuko Riniwati. "The Effect of Methyltestosterone Hormone Immersion on Male Formation in Gourami Larvae (Osphronemus goramy Lacepède, 1801)". Journal of Experimental Life Sciences 10, n.º 3 (30 de octubre de 2020): 162–64. http://dx.doi.org/10.21776/ub.jels.2020.010.03.03.

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Ananda, Dian, Saptono Waspodo y Baiq Hilda Astriana. "EFFECT OF ADDITION OF TEMULAWAK EXTRACT (Curcuma xanthorriza) ON ARTIFICIAL FEED ON GURAMI FISH GROWTH (Osphronemus goramy)". Journal of Fish Health 1, n.º 2 (30 de diciembre de 2021): 68–79. http://dx.doi.org/10.29303/jfh.v1i2.531.

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The problem with gouramy cultivation was slow growth due to the short intestines of gouramy so that the absorption of feed takes longer and less. Several previous studies used temulawak in the form of flour, extract, oil which was applied to carp, tilapia, milkfish, catfish. The addition of extract, temulawak flour to the feed gave an increase in growth both in length and weight in the test fish. The purpose of this study was to determine whether or not the effect of temulawak extract on the growth of gouramy fish. This research was conducted for 45 days. This research was conducted by experimental method using a completely randomized design (CRD) with 5 treatments (P) 3 times replication (U), in order to obtain 15 experimental units. Treatment 0 Control (without temulawak extract), Treatment 1 Provision of temulawak extract with a concentration of 14%/kg feed, Treatment P2 Administration of temulawak extract with a concentration of 16%/kg feed, treatment P3 Administration of temulawak extract with a concentration of 18%/kg feed, and treatment P4 administration of temulawak extract with a concentration of 20%/kg feed. The results showed that in the P0 treatment the absolute weight gain was 0.78 grams, in the P1 treatment the absolute weight was 0.58 grams, the P2 treatment was 0.33 grams, the P3 treatment was 0.37 grams, and in the P4 treatment it was obtained The result of absolute weight gain was 0.39 grams. The results showed the absolute length increase ranged from 0.35-0.57 cm. It can be concluded that the addition of temulawak extract to the commercial feed of carp has no significant effect on absolute weight, absolute length, survival rate and feed efficiency level.

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Setyowati, Dewi Nur'aeni, Anita Prihatini Ilyas, Awan Dermawan y Sanca Rahmatullah. "Effect of Calcium Carbonate Addition on The Growth and Feed Conversion Ratio of Gourami (Osphronemus goramy) Seed". Jurnal Biologi Tropis 22, n.º 1 (16 de enero de 2022): 194–99. http://dx.doi.org/10.29303/jbt.v22i1.3211.

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Gourami is one of the main freshwater fish commodities which has a high economic value. One of the efforts that can be made to increase the productivity of gourami is the provision of macromineral in the form of calcium carbonate (CaCo3). This study aimed to determine the effect of calcium on productivity that would be seen through the growth rate and feed conversion ratio of gourami seed. The study consisted of five doses of calcium carbonate, each of which was repeated three times. As for treating the doses of calcium carbonate, including 1 (0 mg / L CaCO3), 2 (150 mg / L CaCO3), 3 (200 mg / L CaCO3), 4 (250 mg / L) CaCO3) and 5 (300 mg / L CaCO3). The maintenance medium is added with a salinity of 3 ppt in order to save metabolic energy through an osmoregulation mechanism so that the available energy is expected to be used to increase growth. The result or absolute weight growth was not significantly different based on the analysis of variance and linier regression analysis. The analysis of variance showed that no significant different for survival rate of all treatments. The value of feedÃÂ conversion ratio was not significantly different based on analysis of variance and linier regression analysis. Addition of calcium carbonate did not give significant difference in the absolute weight growth, survival rate, and feed conversion ratio of gourami seed.

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Widiastuti, Endang Linirin, M. Kanedi y Nuning Nurcahyani. "EARLY STUDY: THE EFFECT OF TAURINE ON GROWTH OF GOURAMI (Osprhonemus goramy) AND TILAPIA (Oreochromis niloticus) JUVENILES". KnE Life Sciences 2, n.º 1 (20 de septiembre de 2015): 336. http://dx.doi.org/10.18502/kls.v2i1.169.

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Taurine in diet affected increasing in body weight and length as well as survival rate of juveniles or adults of many marine fishes. It is explained that taurine presumably increased in their ability to tolerate the hypertonicity of seawater as well as to improve their metabolism which leaded to induce maturation. In order to elucidate the effect of taurine physiological universally in the fishes, early study was conducted on freshwater fishes namely gourami (Osprhonemus goramy) and tilapia (Oreochromis niloticus). The growth was determined by their body weight and morphological changes included the length and width of their body. The reproductive status was determined by measuring fish gonadosomatic indexes (GSI) (only for tilapias). Eight experimental groups were chosen consisted of two groups with commercial fish food with and without taurine and two groups with natural fish food (consisted of 50% Xanthosoma sagittifolium) with and without taurine. Amount of taurine given was 0.4 mg/fish/day. Complete randomized design with factorial 2x2 was applied to this study with 40 gourami juveniles (@ 7 grams in weight) and 40 tilapias (@ 50 grams in weight) were used for the experimental units. The study was conducted in 2 months. Analysis variances and LSD and/or t-test at 5% were used to determine the differences among experimental groups. The results indicated that taurine groups increased their body weight for 25-66% compared to the control (no taurine) as well as their body length and width (p< 0.05). Yet, the GSI of tilapias was not shown any significantly different. In this early study we indicated that taurine affected the growth in juvenile gourami and tilapia. However, further experiments related with physiological changes and reproductive status was still needed to complete the study. Keywords: Taurine, gourami, tilapia, growth rate

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Minina, Lyudmila M. y Aleksander E. Minin. "Features of the level regime of the Gorky and Cheboksary reservoirs in the spring-summer period and their effect on fish spawning". Water sector of Russia problems technologies management, n.º 3 (2022): 46–61. http://dx.doi.org/10.35567/19994508_2022_3_4.

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Sobolev, O. I., B. V. Gutyj, P. I. Kuzmenko, I. F. Riznychuk, O. К. Kyshlaly y S. V. Sobolieva. "Selenium and its modeling effect on the body of young geese". Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies 24, n.º 96 (7 de mayo de 2022): 61–69. http://dx.doi.org/10.32718/nvlvet-a9608.

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Today, the number of indicators that control the mineral nutrition of poultry has increased significantly. However, the physiological need of different species of poultry for some mineral elements that perform important biochemical functions in the body has not yet been definitively established. This also applies to such abiotic elements as selenium. The inclusion of selenium in feed for young poultry changes the direction of physiological and biochemical processes in the body and improves metabolism and, consequently, improves their live weight, viability, feed conversion, slaughter, and meat qualities, improve organoleptic characteristics, amino acid composition, nutritional and biological value. In order to deepen and expand modern ideas about the biological role of selenium, its impact on the productive qualities, and the interior performance of young geese in the post-embryonic period of ontogenesis, we have conducted comprehensive research. One of the tasks was to study the causal relationship between the level of consumption of young selenium geese with food and the studied indicators. Experimental studies were performed on Gorky goslings. Feeding of goslings from one day to 75 days of age was carried out with complete rations, balanced on the main nutrients and biologically active substances, in accordance with existing standards. Goslings of the first control group did not receive the addition of selenium in the feed. The birds of the experimental groups (2–4) additionally added different amounts of Selenium to the compound feeds, 0.2 mg/kg, 0.3, and 0.4 mg/kg, respectively. Correlation analysis of the obtained experimental data revealed that there are different levels and directions of the interrelationship between the economically useful and interior features included in the analysis, which may vary depending on the content of selenium in compound feed for young geese. A scheme for modeling the effects of selenium on the body of young geese raised for meat has been proposed.

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Konovalov, Ivan A. "FLOTATION OF LEAD-ZINC ORE USING A MIXTURE OF DITHIOCARBAMATE AND XANTHATE". Interexpo GEO-Siberia 2, n.º 3 (21 de mayo de 2021): 239–47. http://dx.doi.org/10.33764/2618-981x-2021-2-3-239-247.

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The collecting capacity of xanthate, dithiocarbamate and their combination was studied. The effect of activity with respect to the gas-liquid interface of derivative forms of reagents represented by physically sorbed forms of collector was considered. Flotation experiments of lead-zinc ore from the Gorevsky deposit showed an increase in flotation performance when using reagent combinations. The use of a collector with pronounced chemisorbable properties in combination with a reagent having surface-active properties towards the gas-liquid interface caused an increase in the recovery of useful component. It was determined that activity of the physical form of sorption affects the selectivity of lead and zinc recovery - as activity of the physically sorbed form of reagent decreases, the selectivity of recovery grows.

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Muhammadar, A. A., N. Malasari, S. Afriani, M. S. Asmawati y D. F. Putra. "Effect of addition of rubber seeds flour (Hevea brasiliensis) in fish feed on growth and feeding efficiency of Gourami (Osphronemus goramy)". IOP Conference Series: Earth and Environmental Science 1221, n.º 1 (1 de agosto de 2023): 012049. http://dx.doi.org/10.1088/1755-1315/1221/1/012049.

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Abstract Gourami fish, Osphronemus goramy is an omnivorous organism that inhabits calm water sich as swamps, lakes. This study aims to determine the effect of using fermented rubber seeds to feed on the growth and survival of Gourami by feeding a mixture of fermented rubber seeds. The research was conducted at the Bungus Fish Seed Center, Padang City in January-February 2022 using the completely randomized design method with 4 treatments and 4 replications. The results showed that the best treatment was in treatment B with the addition of rubber seed flour that had been fermented as much as 30% so that the absolute weight gain value was (3.55 g), Specific Growth Rate (3.10%/day), Feed Conversion Ratio (0.19) and feed efficiency (51.03%). The lowest treatment was in treatment D where the addition of rubber seed flour fermentation was as much as 50% so that it had a bad effect on the growth rate of Gourami seed.

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Wiyono, R. R., N. N. Dewi, M. Amin y A. L. Fauzan. "Feed conversion ratio and feed efficiency of giant gouramy (Osphronemus goramy) seed with different densities on biofloc media". IOP Conference Series: Earth and Environmental Science 1273, n.º 1 (1 de diciembre de 2023): 012082. http://dx.doi.org/10.1088/1755-1315/1273/1/012082.

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Abstract This study aims to determine the effect of different densities on the feed conversion ratio and feed efficiency of giant gourami on biofloc media. This study used an experimental method using a completely randomized design. Giant gourami seeds were reared for 42 days with four treatments and three replications. K1 (control, non-biofloc, density of 100 fish/pond), K2 (control, non-biofloc, density of 150 fish/pond), P1 (treatment of biofloc with a density of 100 fish/pond), and P2 (treatment of biofloc with a density of 150 fish/pond)). The results showed that different densities had no significant effect on the feed conversion ratio and feed efficiency of giant gourami seeds on biofloc media (p>0.05). However, the lowest feed conversion ratio value was found in treatment P2 (1.17 ± 0.01), then followed by treatment P1 (1.28 ± 0.2), K1 (1.99 ± 1.02), and the highest value was in treatment K2. (2.11 ± 0.83). The highest feed utilization efficiency value was found in treatment P2 (85.78 ± 0.01%), then followed by treatment P1 (79.10 ± 0.11%), K1 (58.58 ± 0.24%), and the lowest value was found in treatment K2 (52.02 ± 0.18%).

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Wulandari, Erawati, Farah Rachmah Aulia Wardani, Nadie Fatimattuzahro y I. Dewa Ayu Ratna Dewanti. "Addition of gourami (Osphronemus goramy) fish scale powder on porosity of glass ionomer cement". Dental Journal (Majalah Kedokteran Gigi) 55, n.º 1 (1 de marzo de 2022): 33. http://dx.doi.org/10.20473/j.djmkg.v55.i1.p33-37.

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Background: Porosity is one of the disadvantages of glass ionomer cement (GIC) restorative materials, as it causes a reduction in strength and durability; the greater the porosity, the lower the strength of the restorative material and vice versa. As gourami fish scales contain calcium and phosphate, they have the potential to reduce the porosity of GIC. Purpose: This study aimed to analyse the effect of adding gourami fish scale powder (GFSP) on the pore size and porosity level of the GIC. Methods: This experimental research included a post-test-only control. The GFSP was fabricated using the freeze-drying method. Sixteen Fuji IX Extra sample cylinders with a diameter of 5 mm and a height of 3 mm were divided into four groups: K0, which comprised GIC without the addition of GFSP; K1, which contained GIC powder + 2.5% GFSP (by weight); K2, which comprised GIC powder + 5% GFSP (by weight), and K3, which contained GIC powder + 10% GFSP (by weight). The samples were observed using scanning electron microscopy and measured using ImageJ software. Data were analysed using a one-way analysis of variance (ANOVA) test. Results: The addition of 2.5% GFSP (by weight) produced the smallest pore size and lowest porosity, while the one-way ANOVA test results were significant among all groups at p = 0.000. There was no significant difference in pore sizes between K0 and K1 (p = 0.359), but a significant difference was found in the level of porosity (p = 0.024). Conclusion: The addition of GFSP affected the porosity of the GIC; the pore size and porosity level of the GIC were reduced by the addition of 2.5% GFSP.

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Putra, Dito Maryanto, Roffi Grandiosa, Herman Hamdani y Kiki Haetami. "The effect of chitosan levels in feed on the growth and daily feed consumption of giant gourami (Osphronemus goramy)". Depik 10, n.º 3 (16 de diciembre de 2021): 231–37. http://dx.doi.org/10.13170/depik.10.3.22609.

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Chitosan is an ingredient that can be used as a feed additive. In aquaculture, chitosan can be used as an antimicrobial, antifungal, antioxidant growth-promoting and immunostimulant. This study aims to determine the optimum addition of chitosan to feed to increase growth and daily feed consumption of giant gourami. The method used in this research is an experimental method using a completely randomized design (CRD), which consists of five treatments and three replications. The treatments used were (A) without chitosan (control), (B) 2.5 g/kg feed, (C) 5 g/kg feed, (D) 7.5 g/kg feed, and (E) giving chitosan of 10 g/kg feed. The test fish used were giant gourami with a 6 – 8 cm length and a weight of 8 – 10 g. The container used was hapa measuring 1 x 1 x 1 m3 with a density of 15 fish per treatment and 42 days of maintenance. The feeding rate was 3% of the fish biomass. Data from observations of length and weight were analyzed using Analysis of Variance (ANOVA) with a 95% confidence level; if there was a significant difference, Duncan's multiple distance test was performed. The results showed that addition of chitosan 7.5 g/kg feed was effective in improving growth on giant gourami. During maintenance, absolute length growth was 2.90 ± 0.10 cm, absolute weight growth was 15.33 ± 1.19 g, daily growth was 36.51 ± 2.84%, feed conversion ratio was 1.69 ± 0.06, and survival rate was 100 ± 0.00%. This research concluded that the optimum level of addition of chitosan to increase growth and daily feed consumption of giant gourami was 7.5 g/kg feed.Keywords:ChitosanFeed additiveGiant gouramiGrowth

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Arifah, Avika Nur, Subandiyono . y Lestari Lakhsmi Widowati. "The effect of bromelin in artificial feed on feed utilization efficiency, growth, and survival of gourami seeds (Osphronemus goramy)". International Journal of Fisheries and Aquatic Studies 12, n.º 2 (1 de marzo de 2024): 86–92. http://dx.doi.org/10.22271/fish.2024.v12.i2b.2915.

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Gogaev, O. K., A. R. Demurova y E. T. Choniashvili. "USING OZONE TO STIMULATE QUAIL EMBRYONIC DEVELOPMENT DURING INCUBATION". Scientific Life 15, n.º 4 (30 de abril de 2020): 594–602. http://dx.doi.org/10.35679/1991-9476-2020-15-4-594-602.

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Most often in industrial poultry farming formaldehyde vapors are used for preincubation processing of eggs, which has a toxic effect both on staff and on the development of embryos during incubation. In this regard, still more attention is paid to the search for environmentally friendly methods of processing eggs and stimulating embryos. Objective: to establish the effect of pre-incubation treatment of eggs with ozone on embryo development rates. The research was carried out at “OOO MIP EcoDom”, which operated at the Gorsky State Agrarian University from 2016 to 2019. Quail eggs of the Estonian breed were taken for the study; they were divided into 4 groups: the control one was processed in the traditional way (formaldehyde vapor per 1 m3 of the volume of a special chamber 35 ml of 37% formalin solution plus 20 ml of water plus 20 g of potassium permanganate); for the first experimental group the duration of ozonation was 10 minutes; the second it was 20 minutes and for the third – 30 minutes. The ozone concentration was 10 mg/m3 . In the course of incubation on the 5th, 10th and 15th day, in accordance with the established standards, biological control was performed. The studies of the morphology of the experimental bird showed that during the period of hatching the chickens of all experimental groups were well developed. They had well-defined blood vessels, the entire body was covered with down. The limbs were pressed to the eggshell, and the head was near the air chamber. Deviations from the norms and pathologies were not found. Basing on the above, it can be concluded that the ozonation of hatching eggs does not cause side effects and positively affects the further development of chicks. It was found that the mass of quail embryos, incubated eggs, subjected to pre-incubation treatment with ozone lasting 20 minutes and a concentration of 10 mg/m3 was significantly higher than the corresponding parameter in the control at 6-, 10- and 15-day olds by 12.20%; 21.46% and 12.75%, respectively. The same pattern was observed in terms of embryo lengths.

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Pribadi, Henki Agusan, Indah Anggraini Yusanti, Sofian Sofian y Fazril Saputra. "KINERJA PRODUKSI DAN KELANGSUNGAN HIDUP IKAN GURAMI (Osphronemus goramy) YANG DIBERI DOSIS INFUSA TEMULAWAK (Curcuma xanthoriza Roxb)". Jurnal Akuakultura Universitas Teuku Umar 5, n.º 2 (7 de octubre de 2021): 80. http://dx.doi.org/10.35308/ja.v5i2.6060.

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This study aimed to evaluate the effect of dietary curcuma infusion supplementation on growth performance and survival rate in giant gouramy. This study used a Completely Randomized Design (CRD) with four treatments and three replications. The treatments tested were giving different doses of curcuma infusion, 0.2 g (P1), 0.4 g (P2), 0.6 g (P3), 0.8 g (P4). The experimental fish used were giant gourami with an average body weight of 0.28 ± 0.01 g which were reared for 30 days in 40x30x25 cm3 sized plastic box containing 20 L of water. Feed was given at satiation method twice a day, at 08.00 and 16.00 pm. The research parameters observed include Weight and Length Growth Rate, Survival Rate, and water quality. The results showed that the dietary curcuma infusion supplementation was able to increase the growth performance and survival rate of giant gouramy. Curcuma infusion dose of 0.8 g resulted in the best growth performance and survival which was not significantly different between treatments. Water quality parameters during maintenance are still in optimal conditions for fish growth.

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Simanjuntak, Fernando Jongguran, Kukuh Nirmala y Ernik Yuliana. "Pengaruh Sistem Resirkulasi Terhadap Kualitas Air, Kelulushidupan Benih Ikan Gurame (Osphronemus Goramy), Serta Kelayakan Usaha". PELAGICUS 2, n.º 1 (27 de enero de 2021): 23. http://dx.doi.org/10.15578/plgc.v2i1.9303.

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ABSTRAKSalah satu komoditas ikan air tawar yang menyumbang produksi perikanan terbesar adalah ikan gurame (Osphronemus goramy) yang mempunyai nilai ekonomis tinggi. Pembenihan ikan gurame adalah hal yang penting untuk menjaga keberlanjutan budidaya ikan gurame. Tujuan penelitian adalah menganalisis pengaruh sistem resirkulasi terhadap kualitas air, kelulushidupan benih ikan gurame, dan kelayakan usaha. Pembenihan ikan gurame pada penelitian ini menggunakan tiga wadah budidaya, yaitu: 1) akuarium dengan sistem resirkulasi (Wadah I); 2) kolam beton sistem air mengalir (Wadah II); kolam beton sistem pergantian air 30% secara berkala (Wadah III). Parameter yang diamati meliputi kualitas air dan angka kelulushidupan benih ikan gurame, serta kelayakan usahanya. Hasil penelitian menunjukkan bahwa pemeliharaan benih ikan gurame pada akuarium dengan sistem resirkulasi mempunyai kualitas air (suhu, oksigen terlarut, dan amoniak) yang terbaik, angka kelulushidupan (average daily growth, average body weight, specific growth ratio, survival rate) yang terbaik, dan membutuhkan modal terbesar pada investasi awal tetapi menghasilkan keuntungan yang lebih tinggi. Pembenihan ikan gurame dengan sistem resirkulasi direkomendasikan karena meningkatkan kualitas air, menghasilkan tingkat kelulushidupan yang tinggi dan menghasilkan keuntungan yang lebih tinggi.ABSTRACTOne of the freshwater fish commodities that contributes to the largest fisheries production is giant gourami (Osphronemus goramy) which has high economic value. Giant gourami hatchling is important to maintain the sustainability of its cultivation. This study aims to analyze the effect of recirculation system to water quality, survival rates, and feasibility of giant gourami hatchling business. Giant gourami hatchling in this study uses three cultivation containers, namely: 1) an aquarium with a recirculation system (Container I); 2) concrete pond with flowing water system (Container II); concrete pond with 30% water change system periodically (Container III). The parameters observed included water quality and survival rate of giant gourami hatchling, as well as the feasibility of their business. The results indicated that the giant gourami hatchling in an aquarium with a recirculation system had the best water quality (temperature, dissolved oxygen, and ammonia), had the best survival rate (average daily growth, average body weight, specific growth ratio, survival rate), and requires the largest amount of capital in the initial investment but yields more returns. Giant gouramy hatchery with a recirculation system is recommended due to improves water quality, results in a high survival rate and generates higher profits.

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Wahyono, Hendri, Iesje Lukistyowati y Morina Riauwaty. "HEMATOLOGY OF Osphronemus goramy FED CONTAINING FERMENTED TURI (Sesbania grandiflora) LEAF MEAL and CHALLENGED WITH Aeromonas hydrophila". Asian Journal of Aquatic Sciences 6, n.º 3 (30 de noviembre de 2023): 317–33. http://dx.doi.org/10.31258/ajoas.6.3.317-333.

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Turi leaf (Sesbania grandiflora) is a natural ingredient with antibacterial compounds. This research was conducted from April to June 2022 at the Fish Nutrition Laboratory and the Laboratory of Parasites and Fish Diseases, Faculty of Fisheries and Marine, Universitas Riau. This study aimed to obtain the best dose of fermented turi leaves in feed seen from hematology before and after the challenge test with A.hydrophila. The method used in this study is an experimental method using a one-factor Completely Randomised Design (CRD) with five treatment levels, namely Kn: (no treatment), Kp: (no cure and infected with A.hydrophila), P1: (fermented feed containing 15% turi leaves, 85% soy flour), P2: (30% turi leaves, 70% soy flour), and P3: (45% turi leaves, 55% soy flour). Fish were reared for 46 days. The challenge test was conducted on day 32 with A.hydrophila bacteria at a density of 108 CFU/mL, as much as 0.1 mL/head. The results showed that fermented feed contained 45% turi leaves and 55% soybeans (P3). Wheat flour obtained total erythrocytes 2.51x106 cells/mm3, hematocrit 40.33%, hemoglobin 10.40 g/dL, total leukocytes 10.13x104 cells/mm3, phagocytosis activity 21.13%, survival rate 90%, and absolute weight growth 9.52g. Water quality parameters were temperature ranging from 27-300C, pH 5.9-6.2, DO 5.5-5.9 mg/L, and NH3 0.015-0.017 m g/L. Based on the results of the study, it can be concluded that there is an effect of adding fermented turi leaves to feed on the hematology of gouramy before and after the A.hydrophila bacterial challenge test has a significant impact

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Dahayu, Inasabrilla Hendar y Djalal Rosyidi. "Application of Chitosan From Waste Gurami Fish Scales (Osphronemus goramy) and Clove Powder (Syzygium aromaticum) As Edible Coating on Chicken Meat". Jurnal Ilmu dan Teknologi Hasil Ternak 16, n.º 3 (1 de noviembre de 2021): 200–213. http://dx.doi.org/10.21776/ub.jitek.2021.016.03.7.

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Chicken meat is a nutritious food that can increase immunity but has perishable food properties that are easily damaged so it is necessary to add preservatives, namely chitosan as an edible coating to protect the meat from microbial contamination. Gourami (Osphronemus goramy) scales have the potential to be processed as chitosan. Through 3 stages, namely deproteination, demineralization, and deacetylation. The purpose of this study was to determine the effect of adding chitosan with gourami fish scales and cloves as an edible coating on the quality of raw chicken meat at room temperature for 9 h. This study used a factorial completely randomized design (3×3), with factor A: concentration of chitosan solution (0%, 1%, and 2%) and factor B: concentration of clove solution (0%, 1%, and 2%) and repeated 3 times. The results showed that the control treatment without clove and chitosan after 9 h of storage at room temperature had a significant difference in effect on the treated samples. The best treatment was found in the interaction of 2% chitosan (K2) and 2% cloves (C2) with microbial contamination of 2×10 5 CFU/g so that it still meets the standards of the National Standardization Agency (BSN) namely, chicken meat has a maximum requirement of 1×106 CFU/g, which can maintain the quality of meat, both in terms of pH, water content, and acceptability of organoleptic values which are still favored by panelists.

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