Quality of fluidization in gas–solid unary and packed fluidized beds: An experimental study using gamma ray transmission technique

2012 ◽  
Vol 226 ◽  
pp. 91-98 ◽  
Author(s):  
D. Mandal ◽  
V.K. Sharma ◽  
H.J. Pant ◽  
D. Sathiyamoorthy ◽  
M. Vinjamur
Keyword(s):  
Experimental Study ◽  
Fluidized Beds ◽  
Gamma Ray ◽  
Transmission Technique

The Potential Effect of Mucuna pruriens Seed Extract on Sperm Quality experimental study on mice exposed to cigarette smoke

2021 ◽  
Vol 20 (4) ◽  
pp. 768-773
Author(s):  
Meidona Nurul Milla ◽  
Yani Istadi ◽  
Vania Shaula ◽  
Deastri Anjeas Wari ◽  
Chntyia Dwi Cahyani Puspitasari ◽  
...  
Keyword(s):  
Experimental Study ◽  
Cigarette Smoke ◽  
Sperm Quality ◽  
Medical Science ◽  
Seed Extract ◽  
Reproductive Age ◽  
Testicular Atrophy ◽  
Mucuna Pruriens ◽  
Control Group

Background: Infertility has been more common problems among couple of reproductive age. One of the factors causing this disorder is unhealthy environmental factors including exposure to cigarette smoke. Polynuclear aromatic hydrocarbons (PAHs) in cigarette smoke can cause testicular atrophy, while the free radicals can inhibit the stages of spermatogenesis, and nicotine in cigarettes affects the brain dopamine levels affecting the levels of GnRH, and subsequently affect the levels of FSH and LH needed in spermatogenesis. The use of Mucuna pruriens seed extract containing antioxidants and L-dopa is expected to improve the quality of sperm after exposure to cigarette smoke. Objective: This study aimed to determine the effect of Mucuna pruriens seed extract on the sperm quality in mice exposed to cigarette smoke. Methods: This study was an experimental study with a post test only control group design. A total of 20 mice were divided into 4 groups of five mice each. All groups were exposed to cigarette smoke. Group 1 was the negative control exposed to cigarette smoke. Groups 2, 3, 4 were exposed to cigarettes smoke and given Mucuna pruriens seed extracts at the dose of 250; 300; and 350 mg/Kg BW/day. Parameters of sperm quality included concentration, morphology, motility and viability. Results: Post hoc tests showed there were significant differences among treatment groups. Conclusion: the administration of Mucuna pruriens seed extract affects the sperm quality of BALB/c mice exposed to cigarettes smoke. Bangladesh Journal of Medical Science Vol.20(4) 2021 p.768-773

Experimental study on surface quality of silicon ingots prepared by electromagnetic continuous casting

2012 ◽  
Vol 15 (4) ◽  
pp. 340-346 ◽  
Author(s):  
Feng Huang ◽  
Ruirun Chen ◽  
Jingjie Guo ◽  
Hongsheng Ding ◽  
Yanqing Su ◽  
...  
Keyword(s):  
Experimental Study ◽  
Continuous Casting ◽  
Surface Quality ◽  
Electromagnetic Continuous Casting

scholarly journals Experimental study of cooling tower performance using ceramic tile packing

2013 ◽  
Vol 7 (1) ◽  
pp. 21-27 ◽  
Author(s):  
Ramkumar Ramkrishnan ◽  
Ragupathy Arumugam
Keyword(s):  
Experimental Study ◽  
Cooling Tower ◽  
Packing Material ◽  
Transfer Coefficients ◽  
Ceramic Tiles ◽  
Burnt Clay ◽  
Different Types ◽  
Roofing Material ◽  
Forced Draft

Deterioration of the packing material is a major problem in cooling towers. In this experimental study ceramic tiles were used as a packing material. The packing material is a long life burnt clay, which is normally used as a roofing material. It prevents a common problem of the cooling tower resulting from corrosion and water quality of the tower. In this study, we investigate the use of three different types of ceramic packings and evaluate their heat and mass transfer coefficients. A simple comparison of packing behaviour is performed with all three types of packing materials. The experimental study was conducted in a forced draft cooling tower. The variations in many variables, which affect the tower efficiency, are described.

scholarly journals Experimental evaluation of the light sword lens performance with a variable pupil size

2018 ◽  
Vol 10 (2) ◽  
pp. 36 ◽  
Author(s):  
Walter Torres-Sepúlveda ◽  
Alejandro Mira-Agudelo ◽  
John Fredy Barrera ◽  
Andrzej Kolodziejczyk
Keyword(s):  
New York ◽  
Experimental Study ◽  
Pupil Size ◽  
Focal Depth ◽  
Optical Element ◽  
Depth Of Focus ◽  
Variable Diameter ◽  
Diffraction Structure ◽  
Do So

This paper presents an experimental study designed to test the performance of the light sword lens (LSL) with different pupil sizes. To do so, Snellen optotype images obtained by a monofocal lens either with or without an LSL, were compared. Images were obtained for three different pupil sizes at several target vergences. The correlation coefficient and through-focus curves were obtained and compared. The experimental results show differences in the contrast and the depth of focus with different pupil sizes using the monofocal lens without an LSL. In contrast, when using the monofocal lens in combination with the LSL, the quality of the images is similar for all pupils and target vergences used, with slight differences only in halos and contrast. Full Text: PDF ReferencesG. Mikula, Z. Jaroszewicz, A. Kolodziejczyk, K. Petelczyc, M. Sypek, G. P. Agrawal, "Imaging with extended focal depth by means of lenses with radial and angular modulation", Opt Express 15, 9184, (2007). CrossRef A. Kolodziejczyk, S. Bará, Z. Jaroszewicz, M. Sypek, "The Light Sword Optical Element—a New Diffraction Structure with Extended Depth of Focus", J. Mod Opt. 37, 1283, (1990). CrossRef K. Petelczyc et al, "Presbyopia compensation with a light sword optical element of a variable diameter", Photonics Lett. Pol. 1, 55 (2009). DirectLink A. Mira-Agudelo et al, "Compensation of Presbyopia With the Light Sword Lens", Invest Ophthalmol Vis Sci 57, 6871, (2016). CrossRef R.A. Fisher, Statistical Methods for Research Workers (New York, Hafner, 13th Ed., 1958) CrossRef

scholarly journals PEMANFAATAN KULIT BUAH NAGA MENJADI PERMEN JELLY KERING

2019 ◽  
Vol 10 (2) ◽  
pp. 95
Author(s):  
Ni Komang Nilawati ◽  
Made Suriani ◽  
Risa Panti
Keyword(s):  
Experimental Study ◽  
Data Collection ◽  
Fruit Quality ◽  
Organoleptic Test ◽  
Fruit Skin ◽  
Dragon Fruit ◽  
Observation Method

Abstrak Penelitian eksperimen ini bertujuan untuk mengetahui kualitas permen jelly kering kulit buah naga dilihat dari (1) aspek rasa,(2) tekstur (3) warna. Penelitian ini menggunakan panelis terlatih yang terdiri dari 25 orang panelis, Metode pengumpulan data yang digunakan dalam penelitian ini yaitu metode observasi dengan menggunaka instrumen berupa lembar uji organoleptik dengan 3 tingkatan yaitu baik,cukup,dan kurang. Data dianalissis dengan menggunakan tehnik deskritif kuantitatif. Hasil penelitia ini menunjukan kualitas permen jelly kulit buah naga dilihat dari aspek rasa berada dalam kategori baik, dengan skor 2,44, ditinjau dari aspek tekstur berada pada kategori baik dengan skor 2,61, ditinjau dari aspek warna berada dalam kategori baik dengan skor 2,71. Berdasarkan hasil penelitian ini dapat disimpulkan bahwa limbah kulit buah naga dapat dimanfaatkan menjadi produk olahan permen. Kata kunci : kulit buah naga, kualitas permen jelly. Abstract This experimental study aims to find out the quality of dried jelly candy dragon fruit skin viewed from (1) aspect of taste (2) textures (3) colour. This study used trained panelists consisting of 25 panelists. The method of data collection used in this study was the observation method using instruments the from of organoleptic test sheets with 3 levels good, sufficient and less. Data were analyzed using descriptive quantitative techniques. The results of this study shows the quality of dragon fruit skin jelly candy seen from the aspect of taste in the good . category, with score of 2,44, in terms of the texture aspect in the good category with a score of 2,61, in terms of color aspects in the good category with a score of 2,71 based on the result of this study it can be concluded that dragon fruit skin waste can be used as processed candy products. Keywords: Dragon fruit, quality, jelly candy.

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