scholarly journals Physical changes of low quality of clay bricks due to sandy-soil mixture under combustion performance

2021 ◽  
Vol 331 ◽  
pp. 03010
Author(s):  
Muhammad Ridwan ◽  
Ade Indra ◽  
Annisa Febiana Yunera ◽  
Rudy Kurniawan
Keyword(s):  
Physical Properties ◽  
Sandy Soil ◽  
Fire Exposure ◽  
Test Results ◽  
Soil Mixture ◽  
Combustion Performance ◽  
Clay Bricks ◽  
Home Industries ◽  
Physical Changes

This research studies the physical properties of the low quality of bricks mixed with sandy -soil in home industries located in Gunung Sarik of Padang City. The ratio mixture of the brick making material in the home industries was not measured with the proper measurement; as a result the quality of the brick was poor. The research used 5 x 5 x 5 cm and 180 cubes of bricks to see the physical changes. The ratio of mixed materials between sandy soil and clay are 0.11.025, 0.43,0.67,1.0, and 1.50. The procedure for making bricks was the same as a factory without changing the factory method. The process of burning bricks for three days and two nights using wood. From the test results, the density of the bricks did not change significantly between direct and indirect fire exposure but decreased in proportion to the addition of sandy soil. The addition of sandy soil reduces the percentage of damage and physical changes. The acceptable ratio of sandy -soil mixture is a range of 0.43.-0.6.

scholarly journals Effect of the change of firing temperature on microstructure and physical properties of clay bricks from Beruas (Malaysia)

2010 ◽  
Vol 42 (2) ◽  
pp. 245-254 ◽  
Author(s):  
I. Johari ◽  
S. Said ◽  
B. Hisham ◽  
A. Bakar ◽  
Z.A. Ahmad
Keyword(s):  
Physical Properties ◽  
Firing Temperature ◽  
Phase Changes ◽  
Test Results ◽  
Clay Brick ◽  
Soaking Time ◽  
Clay Bricks ◽  
Optimum Firing ◽  
Optimum Firing Temperature

This study is focused on the behaviour of fired-clay brick from the area around Beruas (Malaysia) that is known for it brick industries. The firing temperatures were set from 800?C to 1250?C and soaking time was fixed for an hour. The effects of firing temperature on the phase changes, microstructure, compressive strength, water absorption and porosity of the bricks were investigated. Test results indicate that the optimum firing temperature was found to be 1200?C. The percentage of porosity significantly reduces from 39.33% to 5.87% when sintered from 1000?C to 1250?C. Bricks sintered at 1200?C exhibited the highest strength of 89.5 N/mm2. The effect of firing temperature significantly improved the microstructure in terms of porosity and the quality of physical properties of fired-clay bricks.

scholarly journals DEVELOPMENT OF EFFERVESCENT TABLETS BASED ON RED GINGER (ZINGIBER OFFICINALE ROSC. VAR. RUBRUM) AND ROSELLA FLOWER (HIBISCUS SABDARIFFA L.)

2021 ◽  
Vol 9 (09) ◽  
pp. 720-727
Author(s):  
Suherman a ◽  
◽  
A.C. Kumoro ◽  
K. Anam ◽  
E.E. Susanto ◽  
...  
Keyword(s):  
Physical Properties ◽  
Hardness Test ◽  
Zingiber Officinale ◽  
Dissolution Time ◽  
Acid Mixture ◽  
Test Results ◽  
Uniformity Test ◽  
Acid And Base ◽  
Red Ginger

The COVID-19 virus is still spreading throughout the world, and many efforts are being made to combat the outbreak and develop vaccines. Several traditional plants such as ginger and rosella can increase endurance and ward off various diseases. In this research, effervescent tablets made from ginger and rosella have been developed. Five formulations of effervescent tablets with different concentrations of acid and base mixtures have been made to test their physical properties, both granules, and effervescent tablets. The granule physical properties test results showed that the variation of the mixture of acids and bases had no significant effect on the physical properties of the granules. The physical quality of the granule is following the applicable requirements. The same thing was also found in the weight uniformity test. In contrast, in the brittleness and hardness test, tablet formulation 5 (an acid mixture consisting only of tartaric acid) showed the best results. From the dissolution time test, it was found that the use of a mixture of citric acid and tartrate was able to accelerate the dissolving time compared to the use of one type of acid. From the test results, it can be concluded that formulation five tablets show the best quality of tablets. Further studies need to be done regarding the application of ginger and roselle effervescent tablets to increase the bodys immunity from COVID-19.

The Comparison of Different Recycled Aggregate Types Properties

2018 ◽  
Vol 272 ◽  
pp. 284-289
Author(s):  
Magdaléna Šefflová
Keyword(s):  
Physical Properties ◽  
Recycled Aggregate ◽  
Test Results ◽  
Recycling Process ◽  
Natural Aggregate

This paper is focused on properties of recycled aggregate. Three types of recycled aggregate were used for experiment (designation REC A, REC B and REC C) and for comparison natural aggregate (designation NA). The geometrical and physical properties of recycled aggregate were tested. The test results were comparison with natural aggregate. The results confirmed that the quality of the recycled aggregate depends on kind of demolishing process and subsequent recycling process in the recycling plant.

Implementasi Voip Server Berbasis IPV6 Dengan Raspberry PI

2019 ◽  
Vol 9 (01) ◽  
pp. 47-54
Author(s):  
Rabbai San Arif ◽  
Yuli Fitrisia ◽  
Agus Urip Ari Wibowo
Keyword(s):  
Internet Protocol ◽  
Wireless Transmission ◽  
Raspberry Pi ◽  
Test Results ◽  
Average Delay ◽  
Ipv6 Network ◽  
Ip Network ◽  
Selection Of ◽  
Better Than

Voice over Internet Protocol (VoIP) is a telecommunications technology that is able to pass the communication service in Internet Protocol networks so as to allow communicating between users in an IP network. However VoIP technology still has weakness in the Quality of Service (QoS). VOPI weaknesses is affected by the selection of the physical servers used. In this research, VoIP is configured on Linux operating system with Asterisk as VoIP application server and integrated on a Raspberry Pi by using wired and wireless network as the transmission medium. Because of depletion of IPv4 capacity that can be used on the network, it needs to be applied to VoIP system using the IPv6 network protocol with supports devices. The test results by using a wired transmission medium that has obtained are the average delay is 117.851 ms, jitter is 5.796 ms, packet loss is 0.38%, throughput is 962.861 kbps, 8.33% of CPU usage and 59.33% of memory usage. The analysis shows that the wired transmission media is better than the wireless transmission media and wireless-wired.

Pengaruh Penambahan Air pada Pengolahan Susu Kedelai

2015 ◽  
Vol 4 (1) ◽  
pp. 8-13
Author(s):  
Priscillia Picauly ◽  
Josefina Talahatu ◽  
Meitycorfrida Mailoa
Keyword(s):  
Glycine Max ◽  
Physical Properties ◽  
Sweet Taste ◽  
Soya Milk ◽  
Randomized Design ◽  
Soybean Extract ◽  
Glycine Max L ◽  
Completely Randomized Design ◽  
Water Ratio

Soybean (Glycine max (L) Merr) is needed as an alternative diversification in order to increase protein consumption. Soybean can be processed into variety of foods and drinks. The most popular drink from soybean is soya milk which is made from soybean extract yielded from the addition of water. The amount of water added determine the quality of soya milk due to its effect on the chemical and physical properties of soya milk. This research was intended to find out the proper ratio of soybean and water in the processing of soya milk to yield the best quality. A completely randomized design was used with eight treatments of soybean and water ratio as follows, ratio of 1 : 6, ratio of 1 : 8, ratio of 1 : 10, ratio of 1 : 12, ratio of 1 : 14, ratio of 1 : 16, ratio of 1 : 18 and ratio of 1 : 20. Result showed the soybean and water ratio 1 : 10 in the processing of soya milk yielded milk having good quality according to its chemical with protein content of 2.53%, fat of 1.20%, sugar total of 1.60%, pH of 7.1, and organoleptic characteristies of both somewhat sweet taste and viscous texture.

Sinonasal effects of external dacryocystorhinostomy

2021 ◽  
pp. 1-4
Author(s):  
H Eyigor ◽  
E A Cetinkaya ◽  
D T Coban ◽  
G Ozturk ◽  
Ö Erdem
Keyword(s):  
Mucociliary Clearance ◽  
Nasal Symptom ◽  
Ciliary Activity ◽  
Test Results ◽  
Saccharine Test ◽  
Significant Difference ◽  
Symptom Scores ◽  
Endoscopic Score ◽  
External Dacryocystorhinostomy

Abstract Objective External dacryocystorhinostomy is thought to cause mucociliary dysfunction by damaging the mucosa, in turn affecting ciliary activity and mucus quality. This study investigated the effect of external dacryocystorhinostomy on sinonasal function. Methods Patients scheduled for unilateral external dacryocystorhinostomy who underwent endoscopic nasal examination and paranasal sinus computed tomography were included in this study. A saccharine test was performed on the planned surgical side and the mucociliary clearance time was determined. The sinonasal quality of life was measured in all patients, pre-operatively and at six months post-operatively, using the Sino-Nasal Outcome Test-22. The Lund–Kennedy endoscopic score was also determined in all patients, both pre- and post-operatively. Results The study comprised 28 patients (22 females and 6 males). A statistically significant difference was found between the pre- and post-operative saccharine test results (p = 0.006), but not between the pre- and post-operative Sino-Nasal Outcome Test-22 scores (p > 0.05). Conclusion This study is one of only a few to investigate the effect of external dacryocystorhinostomy on sinonasal function. The results showed that external dacryocystorhinostomy impairs mucociliary clearance. The surgical procedure is well tolerated and does not significantly change nasal symptom scores.

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