1,894 research outputs found
Keeping track of worm trackers
No full textC. elegans is used extensively as a model system in the neurosciences due to its well defined nervous system. However, the seeming simplicity of this nervous system in anatomical structure and neuronal connectivity, at least compared to higher animals, underlies a rich diversity of behaviors. The usefulness of the worm in genome-wide mutagenesis or RNAi screens, where thousands of strains are assessed for phenotype, emphasizes the need for computational methods for automated parameterization of generated behaviors. In addition, behaviors can be modulated upon external cues like temperature, O2 and CO2 concentrations, mechanosensory and chemosensory inputs. Different machine vision tools have been developed to aid researchers in their efforts to inventory and characterize defined behavioral “outputs”. Here we aim at providing an overview of different worm-tracking packages or video analysis tools designed to quantify different aspects of locomotion such as the occurrence of directional changes (turns, omega bends), curvature of the sinusoidal shape (amplitude, body bend angles) and velocity (speed, backward or forward movement)
Portrait of author Jackson A. Graves, [s.d.]
No full textPhotographic portrait of author Jackson A. Graves, [s.d.]. Graves is shown from his upper torso to his head and is looking to the right. He is wearing a light-colored suit, a light shirt, and a dark tie with a square pattern. He has light-colored hair that is neatly combed and parted at left, a thick light mustache, and light eyebrows. There are large bags beneath his eyes and his ears are very big
Simulation and Control of a Pneumatic Muscle Actuator for a Rehabilitation Robot
No full textThe perfomance of a pneumatic muscle actuator, invented by Jim Hennequin and used in a prototype wheelchair-mounted robot ann designed by the first author is reported. Experimental measurements were made of the output torque versus rotary motion and internal pressure. The torque available for a muscle of size 60 mm width by 90 mm length ranges from 1 to 15 Nm. The rotary stiffness of this muscle is 0.081 Nm/deg. A simulation model of the dynamic behaviour of the muscle attached to the robot arm using one-dimensional flow theory was written in ACSL (Advanced Continuous Simulation Language). The resultant simulation gives good agreement to within ± 5% of the experimental values. Control using proportional and a PID controller is shown to be effective
Painted portrait of Father Geronimo Boscana, O.F.M., author of Chinigchinich, [s.d.]
No full textPhotograph of a painted portrait of Father Geronimo Boscana, O.F.M., author of "Chinigchinich", [s.d.]. The friar is at center, is shown from his upper torso to his head and is looking slightly to the right. He is wearing a light-colored hooded robe with the hood pulled halfway up his head. He has some thin white hair but is mostly bald. Chinigchinich was an account of California Indian life, focused on the Indians near San Juan Capistrano
Portrait of James Laughlin, author of "This Is My Blood," [s.d.]
No full textPhotographic portrait of James Laughlin, author of "This Is My Blood," [s.d.]. A elderly man with smiling eyes turns his face toward the camera. He has a slight smile on his face, and a large nose, bushy eyebrows and slicked-back graying hair. He wears a light-colored suit, striped tie, and undergarment.; The book was to be published March 3, 1989 in a limited edition by The Yolla Bolly Press
Fields of activity significance scientific college students [Campos de significación de la actividad científica en estudiantes universitarios]
No full textThis study has as purpose to show the beliefs, attitudes, knowledge and stereotypes of university students about scientific research. In order to reach it, the author carried out an exercise based on associative questions, individual and group interviews and a multiple choice questionnaire that was proposed to 273 students enrolled at two university centers at Guadalajara University (Universidad de Guadalajara). The information was then analyzed by means of the mixed content technique (open answers) and the statistic program SPSS (multiple choice questionnaire). The results show that most of the interview students have erroneous conceptions about the scientific duty and a very imprecise picture about the scientist and the domain and space in which he/she works. Since those social representations have been built throughout the student's academic life by several media (formal and informal), the author considers that it is essential to analyze them in order to increase the interest about scientific activity amongst the students
A Study to Assess the Effectiveness of Structured Teaching Programme on Knowledge of Worm Infestation among Mothers of Under Five Children in Selected Hospitals in Dindigul, Tamilnadu
No full textOBJECTIVES:
To assess the effectiveness of structured teaching programme on knowledge of worm in festation among under five mothers. perimental design was used to assess the effectiveness of self instructional module on worm infestation among mothers of under five children in the Hospital Dindigul. The tool used for this study consists of demographic data and structured knowledge questionnaires. The populations of this study were 60 mothers of under five children in pediatric
outpatient department who undergone treatment and other diagnostic procedure. Samples for the study were selected through consecutive sampling. Conceptual frame work used for this study was Ludwig Von Bertalanffy’s General system theory model.
RESULTS:
The findings of the present study revealed that the computed post test ‘t’ value in overall are a was highly significant (t= 30.22, P<0.001). The mean and S.D value (mean=16.92, S.D=1.42) of post-test was higher than the pre-test value (mean = 7.52, S.D = 1.76). This shows that there was a highly significant increase of knowledge on worm infestation among mothers of under five children and also self instructional module is very much effective.
CONCLUSION:
Self instructional module was easy method of health education, cost effective, non-invasive, and highly feasible. It can be used as an effective intervention to improve the knowledge among mothers of under five children on prevention of worm infestation
Fields of activity significance scientific college students [Campos de significación de la actividad científica en estudiantes universitarios]
No full textThis study has as purpose to show the beliefs, attitudes, knowledge and stereotypes of university students about scientific research. In order to reach it, the author carried out an exercise based on associative questions, individual and group interviews and a multiple choice questionnaire that was proposed to 273 students enrolled at two university centers at Guadalajara University (Universidad de Guadalajara). The information was then analyzed by means of the mixed content technique (open answers) and the statistic program SPSS (multiple choice questionnaire). The results show that most of the interview students have erroneous conceptions about the scientific duty and a very imprecise picture about the scientist and the domain and space in which he/she works. Since those social representations have been built throughout the student's academic life by several media (formal and informal), the author considers that it is essential to analyze them in order to increase the interest about scientific activity amongst the students
Interactive effects of protein nutrition, genetic growth potential and heligmosomoides bakeri infection pressure on resilience and resistance in mice
No full textThe ability of animals to cope with an increasing parasite load, in terms of resilience and resistance, may be affected by both nutrient supply and demand. Here, we hypothesized that host nutrition and growth potential interact and influence the ability of mice to cope with different parasite doses. Mice selected for high (ROH) or low (ROL) body weight were fed a low (40 g/kg; LP) or high (230 g/kg; HP) protein diet and infected with 0, 50, 100, 150, 200 or 250 L3 infective Heligmosomoides bakeri larvae. ROH-LP mice grew less at doses of 150 L3 and above, whilst growth of ROH-HP and of ROL mice was not affected by infection pressure. Total worm burdens reached a plateau at doses of 150L3, whilst ROH mice excreted fewer worm eggs than ROL mice. Serum antibodies increased with infection dose and ROH mice were found to have higher parasite-specific IgG1 titres than ROL mice. In contrast, ROL had higher total IgE titres than ROH mice, only on HP diets. The interaction between host nutrition and growth potential appears to differentially affect resilience and resistance in mice. However, the results support the view that parasitism penalises performance in animals selected for higher growth
Effectiveness of self instructional module on prevention of worm infestation among mothers of under five children in Institute of Child Health and Research Centre at Government Rajaji Hospital, Madurai
No full textSTATEMENT OF THE PROBLEM:
A study to assess the effectiveness of self instructional module on prevention of worm infestation among mothers of under five children in Institute of Child Health and Research Centre at Government Rajaji Hospital Madurai.
OBJECTIVES:
To assess the effectiveness of self instructional module on prevention of worm infestation among mothers of under five children.
HYPOTHESIS:
H1: There is a significant difference between the pre test and post test level of knowledge on prevention of worm infestation among mothers of under five children.
H2: There is a significant association between level of knowledge with selected socio demographic variables.
DESIGN:
Preexperimental design was used to assess the effectiveness of self instructional module on prevention of worm infestation among mothers of under five children in Institute of Child Health and Research Centre at Government Rajaji Hospital Madurai. The tool used for this study consists of demographic data and structured knowledge questionnaires. The populations of this study were 60 mothers of under five children admitted in pediatric ward who undergone treatment and other diagnostic procedure. Samples for the study were selected through consecutive sampling. Conceptual frame work used for this study was Ludwig Von Bertalanffy’s General system theory model.
RESULTS:
The findings of the present study revealed that the computed post-test ‘t’ value in over all area was highly significant (t = 30.22, P<0.001). The mean and S.D value (mean=16.92, S.D=1.42) of post-test was higher than the pre-test value (mean= 7.52, S.D=1.76). This shows that there was a highly significant increase of knowledge on prevention of worm infestation among mothers of under five children and also self instructional module is very much effective.
CONCLUSION:
Self instructional module was easy method of health education, cost effective, noninvasive,
and highly feasible. It can be used as an effective intervention to improve the knowledge among mothers of under five children on prevention of worm infestation
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