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2021 ◽  
Vol 6 (1) ◽  
pp. 54
Author(s):  
Enkeleida Lleshi ◽  
Denis Nuriu

Volleyball and Basketball women’s have different performances from each other due to their special specifics of the game. From the specificity of their training, there are differences in the physical qualities of individual and team sports performance, where one of the elements is vertical jumping. This study is concentrated on two teams: Women’s Volleyball Team (V) and Women’s Basketball Team (B) 15 members each, focusing on 30 subjects. Players were measured in physical parameters; Age (V-24: B-27), Body Height (V-180.4cm; B-173.4cm), Body Weight (V-70.37kg; B-63.88kg), BMI (V-21.67 percent; B-20.93 percent). The players performed the test DJ60cm in the platform Leonardo® Ground Force Reaction Plate (GRFP) which expresses Force max (kN), Power max (w/kg), Time Contact (TCs), Air Time (TAs), TA/TCs. The results obtained by GRFP showed different team values of the two sports in the parameters of Fmax V65.19-B74.07n/kg, Pmax V31.26-B23.06w/kg, TCs V0.231-B0.198, TAs V0.436-B0.34 and TA/TCѕec V1.96ѕ-B1.71ѕec. Results revealed that V players jumped higher (p, 0.001) than B players. Finally, the Drop Jump60cm test has different performance between individual players, despite the fact that in the team average it turned out that Volleyball players is higher in this test. Drop Jump is the typical plyometric test. Furthermore, tests such as DJ can be a useful method for assessing differences and monitoring vertical jump training programs from collective sports.


2021 ◽  
Vol 2 (1) ◽  
pp. 13-19
Author(s):  
Vandon Borela ◽  
Jezreel Matthew M. Ancheta ◽  
Jerus Cyril P. Bejar ◽  
Loureese Mei L. Garcia

This study aimed to determine the ability of polystyrene in ballpen barrels of making a brick to be more compacted than the ordinary clay bricks. Polystyrene is a synthetic aromatic hydrocarbon polymer made from the monomer styrene that also makes a brick denser. The Wood ash from burned wood are usually used by the gardeners as a good source of potash. Wood ash has an ability of making the bricks lighter than the usual clay bricks. Additional wood ash is better than coal ash, because coal ash has a dangerous chemicals that may harm human. The goal of this study is to lessen the ballpen barrels and wood ash that are not disposed properly and make this in a creative way. Five test was conducted to determine the potential of polystyrene and wood ash namely water absorption test, drop test, efflorescence test, compressive test and heat resistance test. Based from the data gathered, it concluded that polystyrene from ballpen barrel and wood ash with the ratio of 50% Cement, 25% Wood Ash, 25% Ballpen Barrels is effective additives in production of lightweight


2020 ◽  
Vol 5 ◽  
pp. 1
Author(s):  
Mahulkar Ankita Vidyadhar Vaijayanti

Amphiphilic biosurfactants are surface-active biological molecules secreted by hydrocarbanoclastic microorganisms. Biosurfactants are eco-friendly, less toxic, biodegradable, and low-cost material, so it has more advantages over chemical surfactants. In this research, Pseudomonas spp., biosurfactant producing microorganisms isolated from different sources of soil samples. IS1, IS2, IS3, IS4 isolates obtained from Garden soil sample; Metal contaminated soil sample; Petroleum contaminated soil sample; Oil contaminated soil sample; respectively. Each isolates identified as Pseudomonas spp. Furthermore, screened for biosurfactant producers. Each isolate showed positive results for the hemolysis test, drop collapse test, oil displacement test, and emulsification test. All isolate incubated in mineral salt medium for biosurfactant production. Biosurfactant extracted from IS1, IS2, IS3, IS4 showed 35%, 65%, 20%, 52% emulsification index respectively. Antimicrobial activity of extracted biosurfactants against pathogenic microorganisms checked by agar cup method. IS2 isolate shows the highest antimicrobial activity among all. All isolate showed a higher zone of inhibition against gram-positive microorganisms than gram-negative microbes. The purpose of this study involves the assessment of the antimicrobial activity of biosurfactant producers from the soil environment.


2020 ◽  
Vol 5 (2) ◽  
pp. 66
Author(s):  
Enkeleida Lleshi ◽  
Denis Nuriu

Volleyball and Basketball women’s have different performances from each other due to their special specifics of the game. From the specificity of their training, there are differences in the physical qualities of individual and team sports performance, where one of the elements is vertical jumping. This study is concentrated on two teams: Women’s Volleyball Team (V) and Women’s Basketball Team (B) 15 members each, focusing on 30 subjects. Players were measured in physical parameters; Age (V-24: B-27), Body Height (V-180.4cm; B-173.4cm), Body Weight (V-70.37kg; B-63.88kg), BMI (V-21.67 percent; B-20.93 percent). The players performed the test DJ60cm in the platform Leonardo Ground Force Reaction Plate (GRFP) which expresses Force max (kN), Power max (w/kg), Time Contact (TCs), Air Time (TAs), TA/TCs. The results obtained by GRFP showed different team values of the two sports in the parameters of Fmax V65.19-B74.07n/kg, Pmax V31.26-B23.06w/kg, TCs V0.231-B0.198, TAs V0.436-B0.34 and TA/TCѕec V1.96ѕ-B1.71ѕec. Results revealed that V players jumped higher (p, 0.001) than B players. Finally, the Drop Jump60cm test has different performance between individual players, despite the fact that in the team average it turned out that Volleyball players is higher in this test. Drop Jump is the typical plyometric test. Furthermore, tests such as DJ can be a useful method for assessing differences and monitoring vertical jump training programs from collective sports.


2020 ◽  
Vol 79 (Suppl 1) ◽  
pp. 481.3-481
Author(s):  
E. Balevi Batur ◽  
Z. Bekin Sarikaya ◽  
M. E. Kaygisiz ◽  
İ. Albayrak Gezer ◽  
F. Levendoğlu

Background:Supraspinatus tears and tendinosis are the most common pathology that cause shoulder pain to approximately half of the patients presenting clinically.1Objectives:To investigate the diagnostic accuracy of five clinical tests in the diagnosis of supraspinatus tears and tendinosis compared with magnetic resonance imaging (MRI).Methods:A total of 116 painful shoulders of 106 consecutive patients were examined. Patients were assessed using the most commonly used special clinical tests including the Jobe test (empty can), Neer test, drop arm test, Hawkins test and full can tests to identify supraspinatus tears and tendinosis. A visual analogue scale (VAS) was used for pain detection, and the Shoulder Pain and Disability Index (SPADI) questionnaire was administered. MRI examinations were performed on 1.5 Tesla MR system and images were assessed by a blinded radiologist. The primary outcomes were to determine the sensitivity, specificity, and accuracy of the five clinical tests, and to establish their correlation with MRI for supraspinatus tears and tendinosis.Results:The mean age was 55.10 ± 10.20 years, and 32.08% of the patients were female. The Hawkins test had a higher sensitivity and accuracy in tears (sensitivity 89.66%, accuracy 56.03%, respectively) and higher sensitivity in tendinosis (79.07%). The drop arm test had a lower sensitivity but higher specificity in both tendinosis and tears (sensitivity 0%, 12.07%, respectively, and specificity 87.67%, 96.5%, respectivelyConclusion:The Hawkins test was the most sensitive in both supraspinatus tendinosis and tears compared with MRI findings.References:[1]Yamaguchi K, Ditsios K, Middleton WD, Hildebolt CF, Galatz LM, Teefey SA,The demographic and morphological features of rotator cuff disease. A comparison of asymptomatic and symptomatic shoulders. J Bone Joint Surg Am, 2006. 88(8): p. 1699-704.Disclosure of Interests: :None declared


Author(s):  
Enrique Ortega ◽  
Roberto Flores

A technique for the aeroelastic solution of parachute decelerators is presented in this work. The methodology uses empirical aerodynamics, based on a filling-time inflation model and Ludtke's area law, coupled to two explicit structural solution approaches. A mass-spring-damper technique allows solving the deployment of the system (when the grid is highly distorted) efficiently, and a finite element model is used for the accurate calculation of the structural loads and stresses during parachute opening and steady flight. The coupling strategy is staggered and the models share the same mesh. The methodology is intended for practical calculations of deceleration systems, and provides useful performance and structural data minimizing model complexity and computational cost. The suitability of the proposed technique is assessed by comparisons with reference test drop data.


2017 ◽  
Vol 5 (3) ◽  
pp. 140-144
Author(s):  
Ainihayati Abdul Rahim ◽  
Wan Nurul Hakimah Wan Azmi ◽  
Noor Azlina Ibrahim ◽  
Wan Nurul Iffan Sofea Wan Mohamad Safari ◽  
Khomaizon Abdul Kadir Pahirul Zaman

Biosurfactants are extracellular macromolecules produced by bacteria, yeast, and fungi when grown on different carbon sources. It has the ability to reduce the surface tension of a liquid, interfacial tensions between two liquids and between a liquid and a solid. This study was conducted to isolate potential biosurfactant producers from oil-contaminated soil and water. Soil and water samples were obtained from the food court area in front of Universiti Malaysia Kelantan, Jeli Campus. Isolation of biosurfactant producing bacteria was carried out on minimal salt medium (MSM) supplemented with palm oil as the sole carbon source. Five potential biosurfactant producers; WS2, WS4, WS5, SS2 and SS5 were successfully isolated and identified by 16S rRNA analysis. Isolate WS4, SS2 and SS5 showed the highest similarity to Klebsiella sp and the other two isolates, WS2 and SS5 showed the highest similarity to Pseudomonas sp. and Nanobacterium sp. respectively. While Klebsiella sp. and Pseudomonas sp. were reported as prevalent biosurfactant producer, no report is available on the production of biosurfactants by Nanobacterium sp. All isolates showed variation in biosurfactant characterization assays which are emulsification test, drop collapse test, oil spreading test, blood haemolysis and blue agar plate assay.


Author(s):  
Yang Ho Moon

MLCC (multilayer ceramic capacitor) is used as electrical parts of computer or mobile phone etc by surface mounting. Drop reliability analysis of MLCC is required for mobile phone because it can be dropped many times when mobile phone used. In this paper when the mobile is dropped, the strain and acceleration are measured and applied to boundary and load condition of simulation. From that result it can be found that the board flex during drop is a major factor that effects on stress in external electrode. From repeated board flex test, drop impact reliability can be estimated.


1994 ◽  
Vol 116 (2) ◽  
pp. 349-353 ◽  
Author(s):  
M. R. Wang ◽  
D. Y. Huang ◽  
Y. C. Liu

Measurements of the droplet behavior near the wall in a vertical rectangular duct were conducted by a phase Doppler particle analyzer (PDPA). The test Reynolds number and drop size range is from 18,500 to 89,300 and from 5 μm to 110 μm, respectively. Results show that the negative slip-velocity of the drops near the free-stream region normally results in the reversed slip-velocity phenomenon in the boundary layer region. No negative slip-velocity of all drops are discovered for Reynolds number less than 38,300. This indicates no reversed slip-velocity phenomenon for the test drop size range under low Reynolds number conditions. However, when the Reynolds number is over 38,300, the free-stream slip-velocity of the bigger drops becomes negative. It is found that the negative slip-velocity and, hence, the reversed slip-velocity phenomenon may take place for drop size larger than 52 μm to 90 μm depending on the flow Reynolds number.


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