scholarly journals Fiche technique de l’impact de l’amendement du substrat en poudre de coquille d’œuf de poule sur la reproduction de Archachatina marginata (Swainson, 1821)

2018 ◽  
Vol 14 (33) ◽  
pp. 239
Author(s):  
Aman Jean Baptiste ◽  
Memel Jean Didier ◽  
Kouassi Kouadio Daniel ◽  
Otchoumou Atcho

This study consists in looking for an improvement of Archachatina margina reproductions performances by amendment of the breeding substrates. As a result, five types of substrate were prepared by soil amendment at different rates (0%, 10%, 20%, 30% et 40%) with chicken egg shell powder. On these substrates, snails were raised from spat stage until they were laid. Reproductive parameters such as: age of first laying, the number of annual laying per animal, the number of eggs per laying on the different substrates were recorded. Overall, snail laying performances improved with increasing rate of substrate amendment. However, beyond a rate of 20%, the weight of eggs laid began to decline. The chicken egg shell powder is suitable for the amendment of the breeding substrate of snails Archachatina marginata in view of an improvement in their reproductive performance. The rate of amendment recommended to this effect is 20%.

2020 ◽  
Vol 2 (2) ◽  
pp. 109-116
Author(s):  
Afrinaldi Lubis ◽  
Syahbudin Hasibuan ◽  
Asmah Indrawati

This study aims to determine the growth and yield of eggplant with chicken egg shell powder utilization and Kascing fertilizer, This research was conducted from March until the month of June 2019. The method used in this study is a randomized block design in factorial, with 2 (two) treatment factors, namely: 1) Factors dose of powdered chicken egg shells (C), which consists of five levels, namely: C0 = control ( without treatment); C1 = chicken egg shell powder 5 g / polybag; C2 = chicken egg shell powder 10 g / polybag; C3 = chicken egg shell powder 15 g / polybag; C4 = chicken egg shell powder 20 g / polybag; 2) Factors Kascing fertilizers (K), which consists of 4 levels, namely: K0 = control (no treatment); K1 = Kascing fertilizer with a dose of 10 ton / ha (25 g / polybag); K2 = Kascing fertilizer with a dose of 20 ton / ha (50 g / polybag); K3 = Kascing fertilizer with a dose of 30 ton / ha (75 g / polybag), each treatment was repeated two (2) times so that there are 40 experimental plots. Each experimental plot consisted of 5 plants with 3 plant samples. The parameters were observed in this study consisted of plant height, leaf area, number of flowers per sample, the number of fruit per sample, production per sample, production per plot and volume of roots. From the research that has been done can be concluded as follows: 1) Giving powder chicken egg shells effect no significant effect on plant height, leaf area, number of flowers / sample, the number of fruit / samples, production / sample production / plot and the volume of the roots of plants eggplant; 2) Fertilizer Kascing significant effect on plant height, leaf area and production / samples as well as very significant effect on the number of fruit / samples and production / plot, but no real effect on the number of flowers / plant samples eggplant; and 3) a combination of administration of a chicken egg shell powder and fertilizer Kascing no real effect on the growth and yield of eggplant.


2020 ◽  
Vol 17 (2) ◽  
pp. 38
Author(s):  
AbdelrahmanE Elshik ◽  
WedadM Etman ◽  
ThuraiaM Genaid

2019 ◽  
Vol 40 (12) ◽  
pp. 1156-1161
Author(s):  
Daeik Kim ◽  
Sun‐Jin Hwang ◽  
Youngjung Kim ◽  
Cheol Ho Jeong ◽  
Yong Pyo Hong ◽  
...  

Author(s):  
Sinarep Sinarep ◽  
Sujita Darmo

The effects of vibrator quenching (QV) on the carbon content, microstructure, and mechanical properties (surface hardness number, wear resistance) in the pack carburizing of AISI 9310 steel were studied. The aim of this research is to increase the surface hardness and improve the wear resistance of AISI 9310 steel. The problem that often occurs in the quenching treatment after pack carburizing is that the thick cooling medium does not evenly wet the surface of the specimen, so that the cooling rate is not uniform, the impact is the distribution of the specimen surface hardness is not the same. Therefore, it is necessary to research the implementation of the vibrator in the quenching treatment.  The specimens were treated with pack carburizing at a temperature of 875 °C, soaking time for 3 hours. The carburizing agent consisted of chicken egg shell powder (CESP) and rice husk charcoal (RHC) with various weight ratios of 5 %:95 %, 15 %:85 %, and 30 %:70 %. Followed by quenching treatment using a 10 % cane molasses cooling medium and vibrator. Hardness testing was carried out using a Vickers microhardness tester, wear resistance test using the pin-on-disc method, and a scanning electron microscope (SEM-EDX) was used to observe changes in the microstructure and carbon elemental content on the specimen surface. The results showed that the application of VQ caused the formation of a small martensite microstructure while without VQ it was large martensite and a few of residual ferrite. The highest surface hardness number is 685 kg/mm2, the wear resistance is 0.32 cm/mg for pack carburizing, using carburizing agent 70 % RHC, 30 % CESP and VQ. VQ causes a more even distribution of the thick cane molasses cooling medium so that the cooling rate of the specimens is uniform.


2021 ◽  
Vol 5 (1) ◽  
pp. 1
Author(s):  
Masthura Masthura ◽  
Abdul Halim Daulay ◽  
Purnama Indah Lase

<p><strong><em>Abstract: </em></strong><em>Research has been carried out on the analysis of the physical properties of paving blocks from egg shell powder. This study aims to determine the physical properties of water absorption, density and porosity in the resulting paving blocks. The samples used were eggshell powder, cement, and sand with a ratio of 0%:40%:60%, 5%:35%:60%, 10%:30%:60%, 15%:25%:60%, 20%:20%:60%. The FAS used was 0,56 and the drying time for the paving blocks was 28 days. The results of the analysis of the physical properties of paving blocks produced at 0% variation have a water absorption value = 8,08%, density = 2,29 g/cm<sup>3</sup> and porosity = 13,31%, at 5% variation has a water absorption value = 8,10%, density = 2,18 g/cm<sup>3</sup> and porosity = 13,94%, the 10% variation has a water absorption value = 8,63%, density = 2,17 g/cm<sup>3 </sup>and porosity = 14,41% , the 15% variation has a water absorption value = 8,83%, density = 2,16 g/cm<sup>3</sup> and porosity = 14,94%, the 20% variation has a water absorption value = 9,10%, density = 2 ,14 g/cm<sup>3</sup> and porosity = 16,82%.</em></p><p><em> </em></p><p><strong><em>Keywords:</em></strong><em> Paving Block, Eggshell Powder, Physical Properties.</em></p>


Author(s):  
Deepak S ◽  
Sargunan K

Dumping of organic waste products without knowing their ideals of other side causes major and various serious environmental degradation problems. In this forum, this paper is mainly focuses on reviewing various eggshell material related research articles published in past years from 2010-2019 in several reputed journals. Various cement concrete material investigations which are partially proportioned with chicken egg shell powder are taken into consideration probably in line with durability study aspects like corrosion resistance. And their outcomes are listed in a way of positive stroke. Chicken egg shell are one of the wastes typically dumped in the ground produces the greenhouse gas emission, ground water contamination etc. Though chicken egg shell powder by raw consists of 94-95% of calcium carbonate (CaCo3) and on incineration turns to calcium oxide (CaO). The use of egg shell in replacement of cement in concrete can have benefits like minimizing use of cement instead of using natural lime. Usually soon after the construction process, the reinforcements got rusted (its volume bulges) and it leads to cracks in the wall and reduces the life of the concrete structure. The one of the reasons cracks produce due to the corrosion of steel in the concrete. That leads to the reducing in strength of the reinforcement bars and cracks formed in the concrete. With respect to the reviews made utilization of egg shell powder in concrete by replacement of cement to a limit which reacts as an economical corrosion resistive product.


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