scholarly journals Important Physical and Mechanical Properties of Dominant Potato Variety Widely Grown in Ethiopia

2021 ◽  
Vol 2 (2) ◽  
pp. 403-412
Author(s):  
Dereje ALEMU
Keyword(s):  
Potato Tuber ◽  
Agricultural Research ◽  
Physical And Mechanical Properties ◽  
Static Friction ◽  
Angle Of Repose ◽  
Agricultural Product ◽  
Unit Operations ◽  
Significant Difference ◽  
Physical Attributes ◽  
Level Of Significance

The physical attributes of agricultural product are utmost essential in developing technologies for different unit operations. Pertinent potato tuber attributes were studied. 100 samples of dominant and popular potato tuber varieties grown in Ethiopia which are free from any injuries from each variety were obtained from Holeta Agricultural Research Center. In this study, the physical attributes of potato tubers were determined at a moisture content of 70.75, 69.99, 71.75, 69.70 and 72.38% (wet basis) for Belete, Jalenie, Gera, Gudene and Chala varieties, respectively. Except specific gravity of potato tuber, other physical properties studied were significantly different at 5% of level of significance. Analysis of variance showed that there is also a significant difference in coefficient of static friction and angle of repose of all potato tuber varieties under four different materials and dynamic coefficient of friction under mild steel sheet metal and galvanized sheet.

scholarly journals Effect of Moisture Content on Selected Physical and Mechanical Properties of Two Varieties of Tigernut (Cyperus spp)

2013 ◽  
Vol 2 (6) ◽  
pp. 24
Author(s):  
A. S. Oyerinde ◽  
A. P. Olalusi
Keyword(s):  
Mechanical Properties ◽  
Moisture Content ◽  
Bulk Density ◽  
Average Length ◽  
Physical And Mechanical Properties ◽  
Static Friction ◽  
Angle Of Repose ◽  
Tuber Weight ◽  
Porosity Coefficient ◽  
Effect Of Moisture

<p>The effect of moisture content on some physical and mechanical properties of two varieties of tigernuts (<em>Cyperus esculentus</em>) was investigated. These properties include: geometric dimensions, linear dimensions, 1000 tuber weight, bulk density, tuber size, sphericity, angle of repose, porosity, coefficient of static friction and compressive strength. The moisture content levels used were 20, 25, 30, 35 and 40% wet basis (wb), and the two tigernut varieties used were yellow and brown types. The linear dimension, geometric diameter, sphericity, 1000- tuber weight, bulk density and angle of repose in both varieties increased with increasing moisture content. The average length, width and thickness of the yellow variety increases more than the brown variety at the determined moisture contents. True density of the yellow variety increased while the brown variety decreased with increase in moisture content. The porosity of the yellow variety reduces with increase in moisture content from 45.95 at 20% mc to 42.4 at 40% mc, while the brown variety decreased from 42.72 at 20% mc to 30.77 at 40% moisture content. The yellow variety had bigger size tubers than the brown variety and this has serious implications in packing, handling and transportation issues.</p>

scholarly journals Physical and Mechanical Properties of Three Varieties of Mango

2019 ◽  
pp. 1-8
Author(s):  
T. Osadare ◽  
O. O. Koyenikan ◽  
F. F. Akinola
Keyword(s):  
Geometric Mean ◽  
Testing Machine ◽  
Physical And Mechanical Properties ◽  
Arithmetic Mean ◽  
Angle Of Repose ◽  
Average Value ◽  
Universal Testing ◽  
Crushing Force ◽  
Significant Difference ◽  
Mango Seed

Physical properties of three varieties of mango were studied at 13.75% and 8.74% moisture content levels. Some selected properties such as geometric mean, arithmetic mean, angle of repose, sphericity and crushing force were determined. The average tri-axial dimensions of the seeds gave 38.00 ± 6.8, 42.23 ± 4.12, 33.95 ± 6.91 as average major diameter; 35.60 ± 5.68, 39.18 ± 3.95, 31.44 ± 7.56 as average intermediate diameter and 24.76 ± 5.2, 28.42 ± 5.59, 23.08 ± 3.67 as average minor diameter for Kerosene, Sheri and Sugar mango respectively. The average sphericity of the three varieties of mango seed was 0.74, 0.77 and 0.67 while that of the angle of repose was 40.430, 08.030 and 09.760 for Kerosene, Sheri and Sugar mango respectively. The average crushing force determined using the universal testing machine gave 21.00 N, 10.58 N and 9.46 N for Kerosene, Sheri and Sugar mango respectively. Statistical analysis shows that there is a significant difference in the geometric mean between Kerosene mango and Sheri mango and no significant difference between Sheri mango and Sugar mango, while the average value of the calculated arithmetic mean was found to be statistically different within the three varieties but no significant difference in sphericity. Kerosene mango has the highest value for the angle of repose and crushing force.

Influence of moderate cigarette-smoking on the peri-implant clinicoradiographic inflammatory parameters around cement- and screw-retained dental implants

2020 ◽  
Author(s):  
Mana Alqahtani
Keyword(s):  
Cigarette Smoking ◽  
Dental Implants ◽  
Smoking History ◽  
Inflammatory Parameters ◽  
Significant Difference ◽  
Implant Retention ◽  
Level Of Significance ◽  
Soft Tissue Inflammation ◽  
Post Hoc ◽  
Adjustment Test

The aim was to assess the influence of moderate cigarette-smoking on the clinical (bleeding on probing [BoP] and probing depth [PD]) and radiographic (crestal bone resorption [CBR]) around cement- and screw-retained dental implants at 5 years’ follow-up. A questionnaire was used to collect information about age, gender, smoking history, duration of implants in function, jaw location of the implant, and daily toothbrushing and flossing. Peri-implant BoP, PD and CBR were measured in all groups. Group comparisons were performed using one-way analysis of variance and for multiple comparisons, the Bonferroni Post hoc adjustment test was performed. Level of significance was set at P&lt;0.05. Forty-eight patients (25 smokers and 23 non-smokers) had cement-retained dental implants; and 48 (24 smokers and 24 non-smokers) had screw-retained dental implants. Among patients with cement and screw-retained dental implants, PD (P&lt;0.05) and CBR (P&lt;0.05) were significantly higher among smokers than non-smokers. The peri-implant sites that demonstrated BoP were statistically significantly higher among non-smokers (P&lt;0.05) than smokers among patients with cement- and screw-retained dental implants. There was no statistically significant difference in peri-implant PD and CBR among smokers with cement- and screw-retained dental implants. Among non-smokers with cement and screw-retained dental implants, there was no statistically significant difference in BoP, PD and CBR. Cigarette-smoking is associated with an increased PD and CBR around cement- and screw-retained dental implants. Cigarette-smoking increases peri-implant soft tissue inflammation as well as loss of crestal bone and this relationship is independent of the type of implant retention protocol used.The author recommends that cement- and screw-retained dental implants are suitable for prosthesis restoration in non-smokers. Further studies on dual-smokers (individuals smoking cigarettes and other forms of tobacco products) are needed related to the clinicoradiographic inflammatory parameters around cement- and screw-retained dental implants

Effect of Nada Yoga on Hypertension & Anxiety Level

GIS Business ◽  
2019 ◽  
Vol 14 (6) ◽  
pp. 1-16
Author(s):  
Naveen Kumar ◽  
Kuldeep singh
Keyword(s):  
Sound Speed ◽  
Anxiety Level ◽  
Hatha Yoga ◽  
Significant Difference ◽  
The Subject ◽  
Level Of Significance

In Nada yoga the sound speed of an object vibrates (as well as its size, however infinitesimal) contributes to its particular sound. Different tone and frequencies contains the subject of meditation in Nada Yoga, which also takes into consideration the musical intervals used in music and in the musical recitation of mantras, is brought together with meditation techniques and certain Hatha Yoga practices that are conducive to sonic exploration. Recently a study conducted on anxiety and hypertension level in Raigarh entitled as “The effect of Nada Yoga on Hypertension and anxiety level”.  The outcome of the study shows that Nada Yoga significantly reduces Anxiety as well as Hypertension. Results founds were surprisingly shows a significant difference between the two means, at .01 level of significance. It shows how Nada Yoga can effectively help to reduce anxiety and hypertension as well as many improves in health also.

Determination of Spreading Motive Levels of Elite Hearing-impaired Sportsmen

2019 ◽  
pp. 39-55
Author(s):  
Osman Kusan ◽  
Hasan Erdem Mumcu ◽  
Abdulkerim Çeviker ◽  
Ömer Zambak ◽  
Onur Öztürk
Keyword(s):  
Educational Status ◽  
Hearing Impaired ◽  
Validity And Reliability ◽  
Male Athletes ◽  
Internal Motivation ◽  
National Team ◽  
Older Athletes ◽  
Significant Difference ◽  
Level Of Significance ◽  
Age Range

This study was conducted to investigate the sub-scales of sports instructions of elite athletes with hearing impairment or hearing loss due to different reasons. A total of 173 hearing-impaired athletes constituted of 54 female and 119 male athletes who are active national team athletes in the age range of 15-25 years. The study was conducted based on Self Determination Theory of Deci and Ryan [9] and on the developed Sports Motivation Scale, Pelletier et al. [24] Kazak [18] applied the validity and reliability of the scale for Turkish athletes. Accordingly, since the p_values calculated for the inner motivation sub-scale and its sub-scales are less than the value of α = .05 which is taken as the level of significance, there is a statistically significant difference in the average scores of the hearing-impaired athletes in their internal motivations and sub-scales. According to gender and educational status, there was no difference in the motivation of the hearing-impaired athletes. According to the age variable, it was seen that older athletes had more external connections. Considering the general motivation scores, the athletes in tennis and swimming were less motivated than others. Elite hearing-impaired athletes are affected by both internal and external impulses. However, internal motivation scores are higher than the external. Internal motivation scores are seen as the lowest in the branch swimming area.

scholarly journals Evaluation of color stability of different temporary restorative materials

2015 ◽  
Vol 44 (5) ◽  
pp. 262-267 ◽  
Author(s):  
José Vitor Quinelli Mazaro ◽  
Luiz Miguel Minani ◽  
Adriana Cristina Zavanelli ◽  
Caroline Cantieri de Mello ◽  
Cleidiel Aparecido Araújo Lemos
Keyword(s):  
Storage Time ◽  
Color Change ◽  
Artificial Saliva ◽  
Color Stability ◽  
Time Interval ◽  
Acrylic Resins ◽  
Significant Difference ◽  
Restorative Materials ◽  
Before And After ◽  
Level Of Significance

AbstractIntroductionTemporary restorative materials are widely used, however, little is know about their color stability.Objectiveto evaluate the color stability of the following temporary restorative materials: acrylic and bis-acrylic resins after immersion in pigmenting solutions for different periods of storage.Material and methodFour materials were tested (Dêncor/Clássico, Protemp 4/3M ESPE; Structur 2 SC/Voco; Luxatemp AM Plus/DMG) and 30 test specimens (15 mm in diameter and 2 mm thick) per material were fabricated. They were divided according to the storage medium (artificial saliva, saliva + cola type soda, and saliva + coffee) and storage time intervals (2, 5, 7 and 15 days). Color measurements were made before and after immersions, with use of a spectrophotometer, by means of the CIE L*a*b* system. The data were analyzed by the analysis of variance and the Tukey Test, at a level of significance of 5%.ResultAcrylic resin presented greater color stability in comparison with bis-acrylic resins (p<0.001). When bis-acrylic resins were compared no significant difference was observed between the resins Structur and Luxatemp (p=0.767). As regards solutions tested, coffee showed the highest color change values (p<0.001), and the longer the storage time interval, the greater was the color change in all the temporary restorative materials analyzed (p<0.001).ConclusionAcrylic resin presented greater color stability in comparison with bis-acrylic resins (p<0.001). Coffee caused the greatest color change, and immersion time was determinant in color stability of the temporary materials analyzed.

scholarly journals Effect of the ketoprofen on the preemptive analgesia in female cats undergoing to ovariohysterectomy

Revista CERES ◽  
2017 ◽  
Vol 64 (1) ◽  
pp. 18-24
Author(s):  
Dayvid Vianêis Farias de Lucena ◽  
Fernanda Vieira Henrique ◽  
Amara Gyane Alves de Lima ◽  
Almir Pereira de Souza ◽  
Pedro Isidro da Nóbrega Neto
Keyword(s):  
Statistical Analysis ◽  
Preemptive Analgesia ◽  
Pain Scores ◽  
Significant Difference ◽  
Reduction Of Pain ◽  
Baseline Values ◽  
Student’S T ◽  
Level Of Significance ◽  
Postoperative Administration ◽  
Student’S T Test

ABSTRACT The objective of this study was to investigate the effect of the ketoprofen on the preemptive analgesia in female cats submitted to ovariohysterectomy. Sixteen healthy cats were distributed into two groups, with eight animals each, by means of a draw, in a preemptive group (PREG), in which the animal received ketoprofen (1 mg/kg) subcutaneously two hours before the surgery; and postsurgery group (POSG), in which ketoprofen (1 mg/kg) was administered subcutaneously immediately after surgery. In both groups, ketoprofen was given 24, 48 and 72 hours after the first adminstration. Heart and respiratory frequencies and glycemia were measured in all animals during the days first ten postsurgery. Analgesia was measured by assigning scores at zero, two, four, six, 12, 24, 48, 72, 96, 120, 144, 168, 192, 216 and 240 hours after the surgical procedure. Statistical analysis was performed using two-way analysis of variance followed by Tukey's test to compare the moments and Student's t-test for comparison between groups. Pain scores were evaluated using test of U-Mann-Withney or Kruskall-Wallis, all at the 5% level of significance. Pain scores were significantly lower in PREG in M0, M6, M72, M96 and M120. No significant difference was found in the levels of glycemia in comparison to baseline values. Ketoprofen promotes postsurgery analgesia in female cats submitted to ovariohysterectomy and preemptive and postsurgery administration provides an earlier reduction of pain scores when compared to postoperative administration, only.

Analysis of Mechanophysical Properties of Fritillaria ussuriensis Maxim and Designing of Grade Sieve Machine

2013 ◽  
Vol 764 ◽  
pp. 165-168
Author(s):  
Jiang Song ◽  
Song Zhuo Lu ◽  
Li Hua Liu ◽  
Ming Wang ◽  
Tian Xiang Liu
Keyword(s):  
Mechanical Properties ◽  
Friction Coefficient ◽  
Physical And Mechanical Properties ◽  
Middle Layer ◽  
Mathematical Statistics ◽  
Angle Of Repose ◽  
Screening Process ◽  
Geometrical Properties ◽  
Pore Dimension ◽  
Main Index

Based on the field and lab measuerement in harvest time, Physical and mechanical properties of fritillaria ussuriensis maxim (FUM) are researched. Geometrical properties of FUM are analyzed using mathematical statistics method, and the variation sections of main index values of two kinds of FUM are obtained. Mechanical properties of FUM outsifting in screen penetrating process are tested by means of friction experiment, the friction coefficient and angle of repose of two kinds of FUM are obtained using mathematical statistics method. Grade sieve machine is designed based on the analysis of mechanophysical properties of FUM. The main parameters are: shape of sieve pore is rectangle, screen diameter is 20mm, sieve pore dimension of upper layer is 13×20mm2, middle layer is 9×18mm2, and under layer is 7×10mm2. By testing of friction coefficient and angle of repose and movement and dynamics analysis of grade sieve, outsifting velocity is 7<<9rad/s and acceleration is 4<a<13m/s2 in screening process.

EFFECT OF YOGA ON CARDIOVASCULAR EFFICIENCY

2019 ◽  
pp. 12-16
Author(s):  
Brij Bhushan Singh ◽  
Shubi Mirja ◽  
Samiya Husain
Keyword(s):  
Statistical Technique ◽  
Step Test ◽  
Control Group ◽  
Significant Difference ◽  
Post Test ◽  
Group A ◽  
Cardio Vascular ◽  
Level Of Significance ◽  
Group B ◽  
Experimental Group

The purpose of this study was to investigate the effects of yogic practices on cardio-vascular efficiency. Material and methods: Total Forty (40) subject’s boys/girls were selected as the sample of the study through the random sampling and their age ranged between 20 to 25 years from the Department of Physical Education, Aligarh Muslim University, Aligarh. The subjects were divided into two groups comprising 20 subjects in each group, namely group “A” (the experimental group) performs yogic practices (Asanas, Pranayamas and Kriyas) and group “B” (the control group) served as control. Statistical technique: for the assessment of the cardiovascular efficiency through Harvard step test pre and post-test was conducted and t-test was applied for the analysis. Result: revealed that there exist a significant difference between group A and group B, at .05 level of significance. On the basis of the pre and post-test among experimental and control group, experimental group found better than the control group on cardiovascular efficiency and significant result were found in this study.

The effect of Bayer’s strategy on developing divergent thinking among students Second intermediate grade in the subject of Arab Islamic history

2021 ◽  
Vol 26 ◽  
pp. 273-304
Keyword(s):  
Divergent Thinking ◽  
Second Grade ◽  
Control Group ◽  
Intermediate School ◽  
Islamic History ◽  
Intermediate Students ◽  
Significant Difference ◽  
The Subject ◽  
Level Of Significance ◽  
Experimental Group

The current research aims to know (the effect of Bayer's strategy on developing divergent thinking among second-grade intermediate students in the subject of Arab-Islamic history) . In order to achieve the goal of the research, the researcher puts the following null hypothesis : 1.There is no statistically significant difference at the level of significance (0.05) between the mean scores of the experimental group students who study according to the Bayer strategy and the average scores of the control group students who study in the traditional way in the dimensional divergent thinking test . The researcher chose an experimental design with two groups, one experimental and the other a control, and the two research groups (experimental - control) were rewarded with the following variables : (Chronological age in months, grades of the previous year, IQ test, pre-branched thinking test ) . The current research was limited to second-grade intermediate students in (Al-Furat Intermediate School for Boys), which is one of the schools affiliated to the city of Baghdad / Directorate of Education Al-Karkh First. (32) students, and the second represented the control group who were studying the same subject in the traditional way, and they numbered (31) students. Thus, the number of the research sample reached (63) students. 2017-2018 . The researcher prepared the divergent thinking test in light of the steps and main questions of the Sheikhly test (2001) in measuring the ability of divergent thinking of the students of the research sample . : The search results showed .The experimental group students who study history according to the Bayer strategy outperformed the control group students who study history using the traditional method in the dimensional branched thinking test . Keyword: Divergent thinking Bayer Stratagy

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