2,414 research outputs found
A note on dual giant gravitons in
We study some of the properties of dual giant gravitons - D2-branes wrapped
on an - in type IIA string theory on . In particular we confirm that the spectrum of small
fluctuations about the giant is both real and independent of the size of the
graviton. We also extend previously developed techniques for attaching open
strings to giants to this D2-brane giant and focus on two particular limits of
the resulting string sigma model: In the pp-wave limit we quantize the string
and compute the spectrum of bosonic excitations while in the semiclassical
limit, we read off the fast string Polyakov action and comment on the
comparison to the Landau-Lifshitz action for the dual open spin chain.Comment: v3 significantly changed: added coupling to RR 1-form and turned on
worldvolume gauge field, computed gauge field fluctuation, added comments on
closure of the sl(2) sector and re-written to improve clarity. This version
published in JHE
Sea turtle research in India: an overview with focus on identification of priority research areas
February 23-25, 2010, Phuket, ThailandIndia has a unique status of distribution of five species of sea turtles (olive ridley, green, hawksbill, leatherback and loggerhead) all along its coast line including the Andaman and Nicobar and Lakshadweep Islands. Olive ridley has attained a novel status for the annual mass nesting along Orissa coast. Naturally, most of the work has been focused towards this species. The work pertaining to sea turtles on other species is scarce. Much work has been on stranding and nesting on the beach. The sea turtle migration to the Indian coast line is on the decline owing to many factors including beach alteration and increased fishing pressure. However, the follow-up of the earlier work to identify the factors responsible for the decline and mitigation measures is lacking. Sea turtles need to be monitored on a long-term basis with much focus on their behavioural aspects. These are vital in order to understand their behaviour in the sea and to have an effective conservation and management system. Modern tools like PTTs and data loggers could be effectively employed to study the sea turtles. The research work on sea turtles along the Indian coast line has been reviewed in order to identify and suggest the priority areas
A Study to Assess the Effectiveness of Rhythmic Auditory Stimulation along with Neurodevelopmental Therapy in improving the Gait Pattern of Post Stroke patients
INTRODUCTION:
Gait restoration after stroke is a major concern of neurological rehabilitation. Stroke is the major cause of disability and raising mare number of handicaps in this industrialized world. In India thy rate of people affected by stroke is keep on increasing because of poor life style and other major factors. The need of rehabilitation after stroke places an important role to make the patient functionally independent in all aspect of basic life style. Physiotherapist is one of the team members who treat the patient in gross motor aspect.
AIM OF THE STUDY:
The aim of the study is to find the efficacy of combined treatment (Rhythmic auditory stimulation and Neuro Developmental Treatment approach) in improving the gait pattern of post stroke patient.
MATERIALS AND METHODOLOGY:
MATERIALS:
Couch, Foot stool, Blocks\steps, Chalk, Inch tape, Ramp.
METHODOLOGY:
Study Design:
Pre test – Post test experimental study design.
Study setting:
Health Care Institutes approved by college and Guide.
Sampling Method:
Simple random sampling method.
Sample size:
A total number of 10 subjects diagnosed as stroke were taken for the study.
Study Duration:
The study was conducted for a period of 3 months.
Inclusion criteria:
• Age 40 to 65 years.
• Sex – both male and female.
• Able to walk 10 meter independently.
• Hemiplegia due to cerebrovascular accident of more than 3 months duration.
Exclusion criteria:
• Cerebellar ataxia.
• Impaired cognitive function.
• Aphasia.
• Basal ganglion lesion.
• Unconscious patient.
• Condition that affect mobility like arthritis disease, spinal abnormalities (or) any amputations.
• Communicative disorder.
RESULT:
The most common cause for stroke is due to occlusion of one of the major cerebral artery especially anterior cerebral artery. The stroke patient has reduced functional mobility and reduced leg function and spasticity.
Deana and Richards (2000) suggested that rhythmic auditory stimulation along with NDT training had a greater contribution in improving the lower limb extensor muscles after the intervention.
At thighs-off, the centre of the body mass has moved forward over the feet. This position ensures that the relative position of body segment at thighs-off enables lower limb extensor forces to accelerate the body vertically into the standing position. (Carr 2009).
Stepping up and down in difference direction (forward and sideways) strengthen difference synergic relationship between hip, knee, ankle extensor and hip abductors or adductors to train in different pattern muscles activation and flexible walking performance. (Shepherd 2000).
Repetitive stepping exercise using of various steps of various heights increase the strength in the lower extensor muscle.
Reaching forward, sideways and in different direction help the individual regain strength and control of the lower limbs, which may enable them to take more weight through the affected leg.
Therefore there is mounting evidence that progressive resistance training is effective in improving gait pattern following stroke.
CONCLUSION:
The study concluded that was the rhythmic auditory stimulation along with NDT effective treatment for improving gait pattern in stroke patients. And also step length and stride length test could be used as the assessment tool for stroke patients
Sequence Similarity between Genetic Codes using Improved Longest Common Subsequence Algorithm
Finding the sequence similarity between two genetic codes is an important problem in computational biology. In this paper, we developed an efficient algorithm to find sequence similarity between genetic codes using longest common subsequence algorithm. The algorithm takes the advantages over the edit distance algorithm and improves the performance. The proposed algorithm is tested on randomly generated DNA sequence and finding the exact DNA sequence comparison. The DNA genetic code sequence comparison can be used to discover information such as evolutionary divergence and ways to apply genetic codes from one DNA sequence to another sequence
Ytterbium-doped tantalum pentoxide waveguides: spectroscopy for compact waveguide lasers
Ytterbium-doped materials are common gain media in high-performance laser systems. In this work, the first spectroscopic investigation of ytterbium-doped tantalum pentoxide (Yb:Ta2O5) for compact waveguide laser applications is presented
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Thaan Vuzha Nilam Tharisu: the land without a farmer becomes barren
This report forms a part of the international research project on policy and sustainable agriculture, Policies that Work for Sustainable Agriculture and Regenerated Rural Economies. The report details the findings of one of the constituent studies, undertaken by an Indian NGO, the Society for People's Education and Economic Change (SPEECH). The Importance of this project is that it concentrated on rainfed rather than irrigated agriculture - i.e. the sharp end of rural development in India, and that the focus was very much on the micro-level, looking at policy as seen from the ground. One of the recurring themes throughout the research was the importance of appreciating people as individuals, and in this spirit some of the personal qualities of the research team are shared. The research covers events in sites in the Virudhunagar district of Tamilnadu: Tiruchuli Panchayat Union and the Villur chain of tanks. This is an essentially rural area, where the need for sustainable forms of agriculture and rural livelihoods is clear. The political landscape is fractured and complex (§2.3), and the officials with the responsibility of implementing policy face significant obstacles and disincentives in doing so in response to the needs of local communities
In vivo pretreatment of Eudrilus eugeniae powder attenuates β-adrenoceptor toxicity mediated by isoproterenol in rat model
Abstract The present study was designed to discover the potential cardioprotective function of earthworm powder (EWP) extracted from Eudrilus eugeniae on isoproterenol (ISO)-induced myocardial infarction in male Wistar rats. The rats were divided into four groups, with six rats in each group. Certain rats were pretreated with EWP (200 mg/kg bwt) (Group III), and a myocardial infarction was then induced by subcutaneous injection of ISO (85 mg/kg bwt) (Group II). Oral pretreatment of 200 mg/kg bwt of EWP for 28 days significantly (p > 0.05) improved the blood profile levels, including (a) the lipid profile of total cholesterol (TC), free fatty acids (FFA), and triglycerides (TG); (b) low-density lipoprotein (LDL), very low-density lipoprotein (VLDL), high-density lipoprotein (HDL), and protein; and (c) A/G ratio, glucose and uric acid levels. The electrophoretic pattern of elevated lactose dehydrogenase (LDH) levels was recovered by EWP treatment as evidenced by comparison with ISO-induced rats with cardiac damage. The above results indicate that EWP (200 mg/kg bwt) provides a cardioprotective effect by attenuating the blood profile, lipid profile, biochemical levels, and LDH patterns in rats that experienced an ISO-induced myocardial infarction
User Satisfaction in the Internet-Anchored Workplace: An Exploration Study
Empirical research on the impact of the Internet on work life is in its infancy. We report the results of an empirical study of the relationships among user satisfaction, job satisfaction changes, user’s behavior (training, experience, and system usage) and demographics (age, gender, and organizational position) in the Internet-anchored workplace. Respondents who report higher levels of user satisfaction with the Internet also report that the Internet has increased their satisfaction with their jobs. Those who report more training, experience and usage and are younger also report higher levels of user satisfaction. Interestingly, there are no differences in user satisfaction reported by men and women. Respondents report more positive changes in job satisfaction with higher levels of Internet experience and time of use. Based on the results recommendations are made for managers and suggestions for future research are given
Developing Human Capital through Personal Web Use in the Workplace: Mapping Employee Perceptions
Personal web usage can be defined as any voluntary act of employees using their company\u27s web access during office hours to surf non-work related websites for non-work purposes. Previous research suggested that personal web usage is a negative force with productivity losses, congested computer resources, security costs, and the potential risk of legal liability. However, using qualitative research we investigated the attitudes of a diverse set of individuals to personal web usage. Our findings suggest that personal web usage in the workplace can be potentially constructive, although we acknowledge the potential for negative uses as well. We suggest an extension of social contract theory to explain these findings
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