Academic literature on the topic 'Golf ball size Mushrooms'
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Journal articles on the topic "Golf ball size Mushrooms"
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Spitz, Werner U., and Mark L. Taff. "Intrapleural golf ball size loose body." American Journal of Forensic Medicine and Pathology 6, no. 4 (December 1985): 329–31. http://dx.doi.org/10.1097/00000433-198512000-00011.
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Pearce, B. "Gluteus medius kinesio-taping: the effect on torso-pelvic separation, ball flight distance and accuracy during the golf swing." South African Journal of Sports Medicine 27, no. 4 (May 25, 2016): 97. http://dx.doi.org/10.17159/2413-3108/2015/v27i4a1262.
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Background. The kinesio-taping method, which is becoming increasingly popular, may provide support and stability to joints and muscles without inhibiting range of motion. Objective. The aim of the study was to determine the effect of kinesio-taping of the gluteus medius muscle on x-factor (torsopelvic separation), ball flight distance and accuracy (smash factor ratio). A specific aim was to determine whether a correlation exists between hip abduction strength and x-factor, ball distance and accuracy. Methods. This study is a one group pretest-posttest quasiexperimental design which took place at a golf facility. Twentynine amateur golfers with handicap of scratch ±2, who were between the ages of 18- and 25-years, participated in this study. Biomechanical outcomes were recorded with and without kinesio-tape applied on the gluteus medius muscle of the trail leg. Biomechanical golf swing analysis with the iClub™ Body Motion System determined the x-factor at the top of the backswing. Ball flight distance and accuracy were measured with FlightScope® and dominant hip abduction strength was measured with the MicroFET Hand-held Dynamometer. Results. Kinesio-tape is effective in improving the relative hip abduction strength (p<0.001), although the effect size was small (Cohen’s d=0.24). With regard to the biomechanical outcome measures, namely x-factor (p=0.28), ball flight distance (p=0.53) and accuracy (p=0.1), there was no significant improvement. Conclusion: Even though the relative hip abduction strength was improved, there was no effect on golf swing biomechanics. This can be explained due to the fact that x-factor, ball flight distance and accuracy are dependent on a combination of body movements to produce the golf swing. Keywords. Golf, X-factor, pelvic stability, taping
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Ball, Geoff D. C., and Alinda Friedman. "Dice, Golf Balls, and CDs: Assumptions About Portion Size Measurement Aids." Canadian Journal of Dietetic Practice and Research 71, no. 3 (September 2010): 146–49. http://dx.doi.org/10.3148/71.3.2010.146.
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Purpose: Portion size measurement aids (PSMAs) are used extensively by dietitians. In this cross-sectional, descriptive study, we explored the degree of consistency and concordance between measured and putative volumes of selected household and sport-related PSMAs that are commonly used for nutrition education and dietary assessment. Methods: An online search of portion size resources yielded several governmental and academic descriptions of household PMSAs (e.g., a compact disc, a nine-volt battery) and sportrelated PMSAs (e.g., a golf ball) and their purported dimensions. The spherical items were purchased locally and measured using electronic digital calipers; measurements were then converted to volumes, in millilitres. Results: Overall, we observed a high degree of heterogeneity in how different educational resources related sport-related PSMAs to portion sizes of food. The mean percentage of error between the measured and putative volumes of PSMAs varied considerably. Conclusions: Our findings indicate that the inaccurate use of PSMAs can lead to systematic bias in nutrition education and misreporting of dietary intake during dietary assessment. Dietitians should exercise caution when using PSMAs because these may not reflect the true portion size they are meant to represent.
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Allarton, Richard, Jun Yao, Tyler Clifford, Benjamin Hitchborn, Liam J. Parker, and Joshua Shaw. "Surface flow modification of aerofoils for automotive racing car applications." International Journal of Modern Physics B 34, no. 14n16 (April 20, 2020): 2040096. http://dx.doi.org/10.1142/s0217979220400962.
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An aerofoil commonly used in aerospace engineering to produce lift is also employed in the motor sport industry to produce downforce for improving traction during cornering. This paper investigates aerofoil surface modification through ‘golf ball dimpling’, used to reduce flow separation behind a golf ball. The studies of other researchers have shown that this type of design can have a positive effect on improving aerofoil performance. However, no optimization information of dimple sizing is given in literature. Therefore, three types of dimpling sized at 5, 10 and 15 mm are applied to the surface of a NACA 6615 wing at 25% chord length from the leading edge in this study using Computational Fluid Dynamics (CFD) as an initial design process. Then a physical model, made through 3D printing additive manufacturing (AM), is tested at angles of attack (AoA) ranging from [Formula: see text] to [Formula: see text] and wind speed up to 30 m/s in a subsonic wind tunnel. Experimental and CFD results show that the smallest dimple size provides the most significant increase on lift to drag ratio at high AoA above [Formula: see text]. This ratio increases further with the wind speed, indicating that a high AoA wing favors down force to improve drag reduction performance.
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Wheare, Matilda Jane, Maximillian J. Nelson, Ryan Lumsden, Alec Buttfield, and Robert George Crowther. "Reliability and Validity of the Polhemus Liberty System for Upper Body Segment and Joint Angular Kinematics of Elite Golfers." Sensors 21, no. 13 (June 24, 2021): 4330. http://dx.doi.org/10.3390/s21134330.
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Golf swing analysis is common in both recreational and professional levels where players are searching for improvements in shot accuracy and distance. The use of motion analysis systems such as the portable Polhemus Liberty system is gaining interest by coaches and players; however, to date, no research has examined the usefulness of the Polhemus Liberty system for golf swing analysis. Therefore, the purpose of this study was to determine the reliability of the Polhemus Liberty system and validity compared to the VICON Nexus motion analysis system when assessing segment (pelvis and thorax) and joint (shoulder, elbow and wrist) angular kinematics during a golf swing at key events (address, top of backswing and impact). Fifteen elite amateur/professional golfers performed ten golf swing trials within specified bounds using their 5-iron club. Reliability was assessed using interclass coefficient, effect size and t-test statistics by all participants completing two separate testing sessions on separate days following the same experimental protocol. Validity was assessed using effect size, Pearson correlation and t-test statistics by comparing swings captured using both Polhemus Liberty and VICON Nexus concurrently. Results demonstrated no difference in ball outcome results using the Trackman launch monitor (P > 0.05) and that the Polhemus Liberty system was reliable across the two sessions for all segment (pelvis and thorax) and joint (lead shoulder (gleno-humeral joint), elbow and wrist) angular kinematics (P > 0.05). Validity analysis showed that the Polhemus Liberty system for the segments (pelvis and thorax) and joints (lead shoulder and wrist) were different compared to the VICON Nexus data at key events during the golf swing. Although validity could not be confirmed against VICON Nexus modeling, the Polhemus Liberty system may still be useful for golf swing analysis across training sessions. However, caution should be applied when comparing data from the system to published research data using different motion analysis methods.
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Grimer, Robert J. "Size Matters for Sarcomas!" Annals of The Royal College of Surgeons of England 88, no. 6 (October 2006): 519–24. http://dx.doi.org/10.1308/003588406x130651.
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INTRODUCTION By the time of diagnosis, sarcomas have frequently reached a large size and many patients have a long history of symptoms prior to diagnosis. The aim of this study was to assess whether size of tumour at presentation or duration of symptoms was a significant factor affecting outcome. PATIENTS AND METHODS A prospective database recording patient, tumour, treatment and outcome factors was reviewed. A total of 1460 patients with newly diagnosed sarcomas and with > 3 years of follow-up were included for analysis. RESULTS The mean size of sarcomas presenting to our unit was 10.7 cm at the time of diagnosis. Bone sarcomas averaged 11.3 cm with little variation by age or diagnosis, whilst subcutaneous soft tissue sarcomas averaged 10 cm. The incidence of metastases at diagnosis increased almost linearly with increasing size and the prognosis, even for patients without metastases at diagnosis became steadily worse with increasing size for all tumours, independent of other factors. Duration of symptoms did not correlate with size but patients with symptoms > 1 year had a slightly better prognosis than those with a shorter duration. CONCLUSIONS The author makes a plea for greater awareness of potential malignancy in lumps and bumps, particularly those over the size of a golf ball (4.27 cm), making the point that the smaller the tumour at diagnosis the better the prognosis.
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Dan, Zhenhua, Jiahui Qu, Yulin Yang, Fengxiang Qin, and Hui Chang. "Evolution of Nanoporous Surface Layers on Gas-Atomized Ti60Cu39Au1 Powders during Dealloying." Nanomaterials 8, no. 8 (July 30, 2018): 581. http://dx.doi.org/10.3390/nano8080581.
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Nanoporous golf ball-shaped powders with a surface porous layer consisting of fcc Cu and Cu3Au phases have been fabricated by selectively dissolving gas-atomized Ti60Cu39Au1 powders in 0.13 M HF solution. The distribution profiles of the Ti2Cu and TiCu intermetallic phases and powder size play an important role of the propagation of the selective corrosion frontiers. The final nanoporous structure has a bimodal characteristic with a finer nanoporous structure at the ridges, and rougher structure at the shallow pits. The powders with a size of 18–75 m dealloy faster due to their high crystallinity and larger powder size, and these with a powder size of smaller than 18 m tend to deepen uniformly. The formation of the Cu3Au intermetallic phases and the finer nanoporous structure at the ridges proves that minor Au addition inhibits the fast diffusion of Cu adatoms and decreases surface diffusion by more than two orders. The evolution of the surface nanoporous structure with negative tree-like structures is considered to be controlled by a percolation dissolution mechanism.
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Dick, Mary K., Robert A. Elmore, and Poonam K. Sharma. "Nicolau syndrome appearing approximately one-year post bicillin injection treated with excision." International Journal of Research in Dermatology 5, no. 3 (July 24, 2019): 662. http://dx.doi.org/10.18203/issn.2455-4529.intjresdermatol20193248.
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<p class="Standard">Nicolau syndrome (livedoid dermatitis<strong>, </strong>embolia cutis medicamentosa) is a unique and painful reaction post intramuscular injection that often ends with necessary necrotic debridement and scarring. We present a case of a 25-year-old female who developed a tender golf ball size lesion with fat necrosis, confirmed by pathology, approximately one year after a Bicillin injection in the buttock. Excision of the mass was necessary for symptomatic relief. To our knowledge, there has never been a report entailing a slow development of Nicolau syndrome over an extended period of time. The pathophysiology of this condition has been attributed to a myriad of causes such as vascular trauma, drug embolism, inflammation, or inappropriate needle length. This syndrome often progresses through three generalized stages before ending in a necrotizing plaque. While there is no current standardized treatment to Nicolau syndrome there are methods for prevention making this important information across the medical field.</p>
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Violin, Kalan Bastos, Tamiye Simone Goia, Kunio Ishikawa, José Carlos Bressiani, and Ana Helena de Almeida Bressiani. "Manufacturing of Porous Ceramic Spheres Using Calcium Phosphates, by a Mechanical Method without Additives or Binders." Advances in Science and Technology 87 (October 2014): 113–17. http://dx.doi.org/10.4028/www.scientific.net/ast.87.113.
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The processing of porous ceramics spheres (PCS) has been developed for biphasic calcium phosphates (BCP), hydroxyapatite (HAp) and beta tricalcium phosphate (β-TCP) in order to be used mostly as bone fillers and drug delivery systems. The importance of the PCS is due to better accommodation of them in order to fill empty spaces and also because is more friendly to cells and bone tissue growth. Also is important to obtain a surface roughness to increase the surface area in contact with the living tissue and their fluids. There are several methods used to achieve the PCS form and most of them use suspensions based on liquids immiscibility effect or additives. The aim of this work was to achieve PCS of BCP, HAp and β-TCP with rough surface and varying size without using solutions or additives. The method developed is based on a mechanical continuous movement of the particles, relying on the normal ability of the ceramic powders to aggregate themselves while rolling in a cylindrical container for long periods. The physical forces involved in the process, gravity, particle attraction, centripetal force and shocking make the ceramic rounds with golf ball appearance on its surface. With this method it was possible obtain PCS with 30% of porosity with rough surface and size between 1 to 4 mm in diameter.
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Sinha, Debottam, K. Anwar, K. Kumari, S. Jaishwal, S. Madeshwaran, S. Keshari, D. Rajan Babu, R. Vidya, and Narayanasamy Arunai Nambi Raj. "Studies on the Dielectric Properties of Natural Urinary Stones." Advanced Materials Research 584 (October 2012): 484–88. http://dx.doi.org/10.4028/www.scientific.net/amr.584.484.
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Kidney or gall-bladder stones are solid accretions (crystals) of dissolved minerals in urine or bile juice found inside the kidneys or urethras and gall bladder, with varying size from as small as a grain of sand to as large as a golf ball, the occurrence whose in the human is well known, although its pathogenesis is not well understood. According to literature, a number of biomaterials, such as collagen, blood vessel walls, DNA, RNA etc., are found to possess the property of electrets which is an electric analogue of a permanent magnet having the capability to retain quasipermanently, an induced polarization. In order to understand about the occurrence and the physical properties of stone formation in the human tissues, the study of its electret behaviour and conductivity becomes imperative which implies the fact of indulging in its growth inhibition, if their deposition is identified using scans. Thus, in this paper, in order to understand the mechanism of growth of these nephrolithiasis, we enumerated the electrical behaviour of the stone, by using the XRD (X-Ray Diffraction) analysis after their collection from different patient in and around the region and subsequently the dielectric constant of the stone was interpreted.
Dissertations / Theses on the topic "Golf ball size Mushrooms"
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PETTERSSON, MARKUS. "Monocular Golf Ball Tracking and Size Estimation." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-156251.
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In order to estimate the distance between a moving camera and a golfball, the projective ball size in images is measured. Two methods are evaluated based on their ability to detect golf balls in TV broadcasting images: circular Hough transform and scale-space blob detection. A tracking algorithm is then proposed where, given a known ball position, a search window is used, adapting for ball speed in the image plane, ballsize and previous window size.Various pre-processing methods are also discussed, including deinterlacing and an approximate background subtraction method. Experimentsshows that none of these pre-processing methods significantly improves the performance in terms of ball detection, although tendencies of improvement is noticed in some test sequences.The tracking algorithm is evaluated by using sequences from TV broadcasts of golf competitions. The algorithm performs well under certain circumstances, where the projective size of the ball is the key to accurate measurements of the distance between ball and camera. The noisy input data however introduces noise also to the size estimations,resulting in noisy distance estimations. Additionally, the test sequences contains no ground truth for the actual distance between ball and camera,and the accuracy of the method could therefore only be determined in terms of noise analysis.
Books on the topic "Golf ball size Mushrooms"
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Press, Danica Belli. Notebook: Golf Ball and Tee Pattern Cover Design / College Ruled 8. 5x11 Letter Size / 120 Blank Lined Pages for School / Work / Journaling / Writing / Note Taking. Independently Published, 2020.
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12 Mile Remembered Our Lives Before They Burned Our Homesteads: Flooded and burned dreams of a small community in British Columbia. Victoria, Canada: Trafford Publishing, 2008.
Find full textConference papers on the topic "Golf ball size Mushrooms"
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Ting, L. L. "Effects of Dimple Size and Depth on Golf Ball Aerodynamic Performance." In ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/fedsm2003-45081.
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Based on the three-dimensional CFD modeling method reported previously, systematic computational sensitivity studies of how the changes of dimple size, depth, number, coverage area, and distribution pattern will affect the golf ball aerodynamic performance have been made by considering those variables individually and then collectively. By using a new golf ball surface design with 344 identical single-sized circular dimples, but keeping the dimple distribution pattern and the dimple diameter unchanged, the dimple depth effect was first investigated by varying the dimple depressions from shallow to deep, and an optimum value corresponding to minimum drag loss has been found. Using the balls with same optimum dimple depth, drag results show the tendency of decreasing as the dimple diameter increases from small to large until a limit is reached. Beyond this limit, drag coefficient will remain to be a constant even with the further increases of the dimple diameter. Ball drag and lift results obtained and presented are not only for the whole ball, but also separately for the dimple occupied area and the dimple-free cage area. Influence of ball backspin motion to the magnitude of the dimple’s optimum depth value was found to be insignificant. Flow field solutions of velocity vectors, trace lines, pressure, and turbulence intensity have also been obtained, and some are used to show how the changes of dimple depth, dimple diameter, as well as the ball backspin motion, will affect the wake formation behind the ball both in size and shape.
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Rangsten, Pelle, Tor-Arne Gro¨nland, Ha˚kan Johansson, Kerstin Jonsson, Johan Bejhed, and Mattias Carlqvist. "Development of MEMS-Based Components and Subsystems for Spacecraft Propulsion." In CANEUS 2006: MNT for Aerospace Applications. ASMEDC, 2006. http://dx.doi.org/10.1115/caneus2006-11079.
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Development of a MEMS-based (Micro Electro Mechanical System) components and subsystems has been pursued at Uppsala University, Sweden since 1997. Since 2005, the continued development towards the first flight the subject MEMS products onboard a satellite in 2008 is done within the frame of NanoSpace — a company dedicated to MEMS-based products for space. Currently, two major efforts to develop MEMS-based propulsion products are ongoing. First, NanoSpace is developing a miniaturized cold gas propulsion system. The major challenge in this effort is to develop the thruster module containing four individual thrusters with the capability to deliver proportional, low noise thrust in the micro- to milli-Newton range. The thruster pod even includes valves, filters, pressure- and temperature sensors and heaters. In a future step, even control electronics and a CAN interface will be included in the thrusters pod which has the size of a golf ball and a weight of about 100 grams. A prototype of this miniaturized cold gas propulsion will be flight tested onboard the PRISMA satellite. PRISMA is an international technology demonstration program with focus on rendezvous and formation flying. It is a two satellite LEO mission with a launch scheduled to September 2008. The other major development effort underway is a MEMS-based Xenon flow control system intended for electrical propulsion systems. Using MEMS technology, a Xenon feed system including an micro isolation valve, pressure regulator, and a number of parallel flow control modules can be built with significantly reduced size and mass compared to existing systems based on conventional technology. NanoSpace is a Swedish company with the goal to be a component and subsystem supplier of MEMS-based products to space industry, based on own research and development and intellectual property rights.