scholarly journals Morphological and Physiological Changes in Red Tilapia (Oreochromis spp.) Subjected to High Temperature and Confinement Stress

2020 ◽  
Vol 12 (2) ◽  
pp. 103-110
Author(s):  
Ezekiel Decano ◽  
Rea Mae emplonuevo ◽  
Emmanuel Vera Cruz
Keyword(s):  
High Temperature ◽  
Physiological Changes ◽  
Red Tilapia ◽  
Confinement Stress

Physiological Changes in Roughstalk Bluegrass Exposed to High Temperature

Crop Science ◽  
2012 ◽  
Vol 52 (2) ◽  
pp. 869-878 ◽  
Author(s):  
James M. Rutledge ◽  
J.J. Volenec ◽  
Y. Jiang ◽  
Z.J. Reicher
Keyword(s):  
High Temperature ◽  
Physiological Changes

scholarly journals Efek Daun Picung (Pangium edule Reinw) sebagai Pengawet Ikan Nila Merah (Oreochromis sp.)

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Isma Fauzilah ◽  
Hari Santoso ◽  
Hasan Zayadi
Keyword(s):  
Data Analysis ◽  
High Temperature ◽  
Low Temperature ◽  
Fresh Water ◽  
Friedman Test ◽  
Analysis Techniques ◽  
Red Tilapia ◽  
Multiple Comparison Test ◽  
Organ Changes

Red tilapia fish are one of the types of fish in fresh water cultivation by having good enough prospects to be developed. In the effort of processing and preserving fish in order to improve the quality of power as well as durable a product of fisheries post-harvest done at various events. It is generally performed by the society amongst others with low temperature, high temperature, fermentation or formalin. This research aims to know the influence of leaf picung on temperature and long preservation against organ changes eyes, gills, the texture and the smell of red tilapia fish. In the method this research uses experimental on the 4 treatment and 5 of repetition by observing organ eyes, gills, texture and smell. Data analysis techniques using friedman test followed by multiple comparison test. Based on the results of the research, leaves stew picung effect on temperature and long preservation in reduction organoleptic red tilapia fish. Organoleptic reduction on red tilapia fish known from the is eyeballs are sunken with a cloudy cornea and his pupils are grayish, the gills are gray accompanied by clotted brown mucus, the texture is rather soft with a little less elastic, it smells very foul. Long preservation of the slowest on the red tilapia fish soaked with the decoction of leaves picung with temperatures of 18 oC goes up to 56 hours.Keywords: Red tilapia fish, Leaf picung, Preserving, OrganolepticABSTRAKIkan nila merah adalah salah satu dari jenis ikan pada budidaya air tawar dengan memiliki prospek yang cukup baik untuk dapat dikembangkan. Dalam usaha pengolahan dan pengawetan ikan guna meningkatkan kualitas serta daya awet suatu produk perikanan pada pasca panen dilakukan berbagai acara. Umumnya yang dilakukan oleh masyarakat antara lain dengan suhu rendah, suhu tinggi, fermentasi atau formalin. Penelitian ini bertujuan untuk mengetahui pengaruh daun picung pada suhu dan lama pengawetan terhadap perubahan organ mata, insang, tekstur dan bau ikan nila merah. Metode pada penelitian ini menggunakan eksperimen pada 4 perlakuan dan 5 ulangan dengan mengamati organ mata, insang, tekstur dan bau. Teknik analisis data menggunakan uji friedman dilanjut dengan uji perbandingan ganda. Berdasarkan hasil penelitian rebusan daun picung berpengaruh terhadap suhu dan lama pengawetan pada penurunan mutu organoleptik ikan nila merah. Penurunan mutu organoleptik pada ikan nila merah dapat diketahui dari bola matanya cekung dengan kornea keruh dan pupilnya keabu-abuan, insangnya berwarna abu-abu disertai lendir coklat yang bergumpal, teksturnya agak lunak dengan sedikit kurang elastis, baunya sangat busuk. Lama pengawetan yang paling lambat pada ikan nila merah direndam dengan rebusan daun picung dengan suhu 18 oC bertahan hingga 56 jam. Kata kunci: Ikan nila merah, Daun picung, Pengawetan, Organoleptik

EXPERIENCE OF USING POLYVALENT PURIFIED PYOBACTERIOPHAGE (PYOBACTERIOPHAGUM POLYVALENTUM PURUM) IN AQUACULTURE

Fisheries ◽  
2021 ◽  
Vol 2021 (4) ◽  
pp. 76-80
Author(s):  
Adelya Zhandalgarova ◽  
Anna Bahareva ◽  
Yulia Nikolaevna Grozesku
Keyword(s):  
Experimental Data ◽  
Weight Gain ◽  
Biological Indicators ◽  
Blood Parameters ◽  
Physiological Changes ◽  
Farmed Fish ◽  
Red Tilapia ◽  
Fish Breeding

The article presents experimental data on the use of pyobacteriophage in the cultivation of two-year-olds of red tilapia. It was found that bacteriophages during fish rearing improves fish-breeding and biological indicators, expressed in an increase in weight gain. The obtained morphobiochemical blood parameters indicate the absence of physiological changes in the organism of the farmed fish.

Influence of Thermo-Mechanical Processing on the Microstructure of Beryllia Dispersed Nickel Alloys

1973 ◽  
Vol 31 ◽  
pp. 184-185
Author(s):  
M.S. Grewal ◽  
S.A. Sastri ◽  
N.J. Grant
Keyword(s):  
High Temperature ◽  
Nickel Alloys ◽  
Thermomechanical Processing ◽  
Cold Work ◽  
High Temperature Strength ◽  
Strengthening Effect ◽  
Mechanical Processing ◽  
Uniform Dispersion ◽  
Oxide Particles ◽  
Nickel Base

Currently there is a great interest in developing nickel base alloys with fine and uniform dispersion of stable oxide particles, for high temperature applications. It is well known that the high temperature strength and stability of an oxide dispersed alloy can be greatly improved by appropriate thermomechanical processing, but the mechanism of this strengthening effect is not well understood. This investigation was undertaken to study the dislocation substructures formed in beryllia dispersed nickel alloys as a function of cold work both with and without intermediate anneals. Two alloys, one Ni-lv/oBeo and other Ni-4.5Mo-30Co-2v/oBeo were investigated. The influence of the substructures produced by Thermo-Mechanical Processing (TMP) on the high temperature creep properties of these alloys was also evaluated.

Application of TEM to Deformation, Wear, and Fracture of Ceramics

1974 ◽  
Vol 32 ◽  
pp. 472-473
Author(s):  
B. J. Hockey
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Mechanical Behavior ◽  
Brittle Materials ◽  
High Temperature Strength ◽  
Wide Range ◽  
Corrosive Environments ◽  
Further Development

Ceramics, such as Al2O3 and SiC have numerous current and potential uses in applications where high temperature strength, hardness, and wear resistance are required often in corrosive environments. These materials are, however, highly anisotropic and brittle, so that their mechanical behavior is often unpredictable. The further development of these materials will require a better understanding of the basic mechanisms controlling deformation, wear, and fracture.The purpose of this talk is to describe applications of TEM to the study of the deformation, wear, and fracture of Al2O3. Similar studies are currently being conducted on SiC and the techniques involved should be applicable to a wide range of hard, brittle materials.

Lattice Imaging of Grain Boundaries in Ceramics

1977 ◽  
Vol 35 ◽  
pp. 114-115
Author(s):  
D. R. Clarke ◽  
G. Thomas
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Silicon Nitride ◽  
Grain Boundaries ◽  
High Temperature Strength ◽  
Current Interest ◽  
Lattice Imaging ◽  
Special Significance ◽  
Structural Applications ◽  
Refractory Ceramics

Grain boundaries have long held a special significance to ceramicists. In part, this has been because it has been impossible until now to actually observe the boundaries themselves. Just as important, however, is the fact that the grain boundaries and their environs have a determing influence on both the mechanisms by which powder compaction occurs during fabrication, and on the overall mechanical properties of the material. One area where the grain boundary plays a particularly important role is in the high temperature strength of hot-pressed ceramics. This is a subject of current interest as extensive efforts are being made to develop ceramics, such as silicon nitride alloys, for high temperature structural applications. In this presentation we describe how the techniques of lattice fringe imaging have made it possible to study the grain boundaries in a number of refractory ceramics, and illustrate some of the findings.

Effect of Improved ThO2 Particle Dispersion in Nickel on High-Temperature Strength

1970 ◽  
Vol 28 ◽  
pp. 444-445
Author(s):  
E. R. Kimmel ◽  
H. L. Anthony ◽  
W. Scheithauer
Keyword(s):  
High Temperature ◽  
Metal Matrix ◽  
Oxide Particle ◽  
Oxide Phase ◽  
Dislocation Motion ◽  
Particle Dispersion ◽  
High Temperature Strength ◽  
Strengthening Effect ◽  
Oxide Particles ◽  
The Stability

The strengthening effect at high temperature produced by a dispersed oxide phase in a metal matrix is seemingly dependent on at least two major contributors: oxide particle size and spatial distribution, and stability of the worked microstructure. These two are strongly interrelated. The stability of the microstructure is produced by polygonization of the worked structure forming low angle cell boundaries which become anchored by the dispersed oxide particles. The effect of the particles on strength is therefore twofold, in that they stabilize the worked microstructure and also hinder dislocation motion during loading.

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