Creeping flow solution of the Leidenfrost phenomenon

Creeping flow solution of Leidenfrost phenomenon by use of Navier-Stokes, continuity, and energy equation

Boydbolt, a positive-latch, simple-release fastener

Fastener /Boydbolt/ has recently been designed to furnish positive lock and release characteristics that positively prevent accidental adverse functions of lock or release

REAL-TIME MEASUREMENT USING EMG AND MOTION CAPTURE SYSTEMS

Real-time feedback to participants of a particular parameter has been a viable tool for learning, training and rehabilitation for many years. The type of feedback that was usually given was in the form of kinematics (e.g. accelerometry) or kinetics (e.g. force). The manner in which the feedback has been given has been altered greatly in recent years by the development of equipment and software that enables the researcher to accomplish the feedback tasks much more easily than previously. In this paper, real-time electromyography (EMG) and real-time kinematics will be presented. The most recent equipment for both real-time EMG and kinematics will be presented along with examples from recent research papers that used such techniques

A generalized correlation of vaporization times of drops in film boiling on a flat plate

Vaporization time correlations for drops in leidenfrost state of film boiling on flat plat

From Discrimination: A Journey to Justice and Understanding

There have been milestones toward understanding in the Civil Rights journey . Do these milestones reflect an advance in understanding and respect, or have fears, ignorances, and outright bigotry forged a wall against acceptance of the Afro-American into mainstream America? An area in the Northeast County of St. Louis, Missouri was selected for this study as it encompassed 1036 residential homes . The area integrated starting about 1978. From surveys conducted by the Chairman of the Board of Trustees of this subdivision, in 1991 and 1992, it was determined that 63\u27l. of the families now are Afro-American, 37% are Caucasian or other. A questionnaire listing twenty questions pertaining to understanding, acceptance, feelings toward others of opposite race, was submitted to some residents and former residents. The variable to be measured was labeled Afro-American Caucasian Understanding (ACU). It was determined beforehand that the sample group of thirty-two be equally apportioned to Afro-American and to Caucasian. The survey was conducted with the assistance of the Chairman of the Board of Trustees who was an Afro-American male, and a Caucasian female member of the church within the area working with a Ladies Guild . This paper touches many facets of everyday existence including groups of school age individuals, entertainers, ball players, business persons, political persons, church people . Results of the survey indicated that there has been an increased understanding among the two cultures as measured against what might be expected from a Likert mean. Given a normal distribution, using the Likert scale with scorings at random one to five, on a twenty question survey, one would expect a mean score of 60 . The minimum score would be twenty, maximum score would be one hundred . The tables submitted gave information supporting a positive measurement toward understanding

Implementation of Bright Futures Health Screening Tools At a School-Based Health Center

A practice improvement project was conducted to implement the use of Bright Futures health screening tools at a rural school-based health center. Some healthcare issues may be difficult for an adolescent to disclose or the adolescent may not understand that the concern should be addressed. A good screening tool should assist a nurse practitioner to help students to disclose difficult information and to provide preventative health care services. It was determined that the Bright Futures Adolescent Supplemental Questionnaires were an effective and efficient tool in increasing relevant knowledge for the pediatric nurse practitioner in this setting. Students were willing and able to complete the forms and take part in screening for potential health concerns. Use of these screening tools led to the discovery of risk factors and problems that might not otherwise have come to light

ARCH-TYPE AND SHOE INTERACTIONS DURING RUNNING

The purpose of this study was to examine the interaction of foot arch-type and running shoe midsole hardness on lower extremity mechanics. Ground reaction forces {GRF) and kinematic timing variables were examined during the support phase of overground running. Eighteen healthy, male, recreational runners served as subjects. They completed 15 running trials in two different shoes; 1) a soft midsole shoe and 2) a hard midsole shoe. Foot type was quantified using a Tekscan pressure mat. From the pressure data, a ratio of forces on the midfoot to the forces an the entire foot was generated to categorize runners as high arched, normal arched and flat arched. Three dimensional kinematic data were collected using three 200 Hz high speed video cameras. Ground reaction force data were collected at 1 000 Hz using an AMTI force platform. Significant differences were found between shoe conditions for 5 GRF parameters (p < 0.05). No significant differences were found between arch types for any of the GRF parameters ( p < 0.05). In addition, no significant differences were found between shoe conditions or between arch types for any of the kinematic timing parameters @ < 0.05). However a significant interaction was observed between shoe conditions and arch groups for total support time and for the percent time to maximum femoral rotation. Results of the study indicated that force ratio footprints was an ineffective method of predicting either kinematic or kinetic changes in running mechanics

A Night At The Play

https://digitalcommons.library.umaine.edu/mmb-vp/4758/thumbnail.jp

KNEE POWER IN LOW BACK PAIN SUBJECTS DURING RUNNING

The purpose of this study was to examine lower extremity shock absorption between runners with and without low back pain. We compared data from three groups based on low back pain status: current low back pain, resolved pain after a single bout of low back pain and runners who never had low back pain (CTRL). All subjects ran at least 20 km per week and ran on a force treadmill at 3.8 m•s-1 while kinematic and kinetic data were collected. Work was determined from joint power histories during the shock attenuation portion of the stance phase. Individuals with a history of low back pain exhibited less peak knee negative power and negative work suggesting that they exhibited decreased eccentric muscle activity during foot-ground impact. The results of this study suggest that decreased eccentric activity of the muscles crossing the knee joint is associated with individuals who have low back pain and, to a lesser extent, with those who have residual low back pain. We suggest that the decreased eccentric activity can result in the footground impact shock wave moving through the lower extremity with little attenuation to the low back region