Free vibrations of circular cylindrical shells

In this report bending theory of shells is used to determine the natural frequencies and mode shapes of circular cylindrical shells. The governing eighth-order system of differential equations has been put in a form which is especially suitable for numerical integration and application of different sets of homogeneous boundary conditions. The Holzer method is used to solve the eigenvalue problem. During numerical integration of the differential equations, the exponentially growing solutions are suppressed whenever they become larger than previously selected values. Numerical results are obtained for various shell geometry parameters and for three different sets of homogeneous boundary conditions. These results are compared with the energy method solutions developed by Rayleigh and by Arnold and Warburton. The difference between the results obtained by the numerical integration method and the energy method has been found to be less than 10 percent for all the cases --Abstract, page ii

Sliding Wear Study of Flame Sprayed Co-Base Powder Coatings

Commercially available Co-base powder was modified with the addition of 10 wt. percentage WC which was further modified with 5 and 10 wt. percentage CrC addition in order to obtain three coatings namely Co+10 wt. percentage WC, Co+10 wt. percentage WC+5 wt. percentage CrC and Co+10 wt. percentage WC+10 wt. percentage CrC. The coatings were deposited by flame spraying process. The microstructure of these coatings mainly showed eutectic containing Co with almost same amount in three coatings. Other phases such as W dominated and Cr dominated carbides were also observed. The 10 wt. percentage CrC coating showed the highest Vickers hardness and lowest wear rate. The coefficient of friction was also observed low in the 10 wt. percentage CrC coating as compared with other coatings

Metabolites change in Jatropha plants due to seed treatment with rhizobacteria and Rhizoctonia bataticola

An experiment on the metabolite [salicylic acid (SA), jasmonicacid (JA), hydrocyanic acid (HCN) and chitinase activity] changes owing to seed treatment with pathogen, plant growth promoting rhizobacteria (PGPRs) - (P. maltophilia, P. fluorescens and Bacillus subtilis) alone and in combination was conducted at Chaudhary Charan Singh, Haryana Agricultural University, Regional Research Station, Bawal. Jatropha curcas plants raised from root rot pathogen (Rhizoctonia bataticola) treated seeds showed an initial increase in SA and hydrocyanic acid HCN content and an opposite trend was observed for JA level and chitinase activity. Though, PGPRs inoculation resulted in higher increase in SA level, JA level and chitinaseactivity in both the cases alone as well as in integration with pathogen, however, maximum increase in JA content was explicited in plants raised after seed treatment with P. fluorescens, the most effective rhizobacteria amongst PGPRs studied. Highest increase in HCN content (45 μg g-1) over control (24 μg g-1) was noticed for P. fluorescens followed by co-seed inoculation with P. fluorescens + pathogen (43 μg g-1) at 10 DPI. The co-seed inoculation elicited 68 units at 10 DPI whereas the pathogen challenged plants showed lower chitinase activity with 42 units. All the metabolites declinedslightly or sharply with age of the plant irrespective of inoculations

AWARENESS, STRESS, ANXIETY, AND DEPRESSION AMONG HYPERTENSIVE PATIENTS ATTENDING CARDIAC OUTPATIENT DEPARTMENT IN A SUPER SPECIALTY HOSPITAL

Objective: Hypertension is a major risk factor for cardiovascular disease and its association with negative emotions may increase their risk forthe development of mental health disorders. The main objective of the study was to assess the awareness, stress, anxiety, and depression amonghypertensive patients attending cardiac outpatient department (OPD).Methods: This study was conducted in cardiac OPD of Super Speciality Hospital associated with Government Medical College, Jammu, for a period of1-month commencing from 1st October to 31st October 2015. Hypertensive patients were given a questionnaire regarding socio-demographic profile,risk factors, and awareness for high blood pressure, and prevalence of stress, anxiety, and depression was assessed using a structured validatedquestionnaire DASS-21 [depression, anxiety, and stress scale-21].Results: It was observed that most (72.5%) of the patients were aware of symptoms and its complications and regarding psychological symptomsmild to severe depressive symptoms were present in 10%, anxiety in 70%, and stress in 10% of patients.Conclusion: There is need of psychiatric evaluation and counseling in these patients and support services to be made available to these patients.Keywords: Hypertension, Awareness, Stress, Anxiety, Depression, Depression; anxiety and stress scale-21

Knowledge and awareness among female patients attending cardiac outpatient department in a super speciality hospital

Background: Cardiovascular disease is the leading cause of mortality not only in males but also in females and knowledge about the disease is poor among them. Objective of the study was to assess the knowledge and awareness among female cardiac patients.Methods: This cross-sectional study was conducted in outpatient department of cardiology in a super specialty hospital of government medical college Jammu, Jammu and Kashmir, for a period of three month from 1st March to 31st May 2017. Female patients were given a questionnaire regarding socio demographic profile, knowledge and awareness were recorded and analyzed in percentage.Results: There were 216 female patients, out of which 56.9% were in age group of 41-60 years, 86.1% were housewives, 87.5% were married, 54.1% having education up to 10th standard and maximum were living in joint family and 52.7% having monthly family income above 20,000. 44.4% were suffering from hypertension. Maximum females 59.7% consider themselves as bulky, 83% have changed their eating habits, 66.6% have started work out after the onset of disease, 61%-62% were having awareness about the cardiac symptoms and 97.2% were following allopathic drug therapy.Conclusions: Overall knowledge and awareness about disease and risk factors among these females was good as these patients were already diagnosed patients and were coming for follow up. There is need of educational programme by involving primary health care workers and utilization of CVD guidelines as a better preventive strategy

Integrated management approaches for controlling root rot of bael caused by Fusarium solani

An experiment was carried out to find out the effective management practices to control the recently recorded pathogen (Fusarium solani) inciting root rot disease in Bael. Rampant incidence due to this pathogen is resulting in excess damage and reduction in acreage. Out of six fungicides screened in vitro, Topsin-M and Bavistin stood at first place in inhibiting the mycelial growth of F. solani. Topsin-M showed 100% inhibition at 50 ppm concentration whereas Bavistin showed 100% inhibition at 150 ppm concentration. Bavistin and Topsin-M as seed dressers effectively protected pre and post emergence seedlings mortality to the tune of 68.75 and 70.95%; 65.00 and 67.54%, respectively. Pre-sowing drenching of soil with Bavistin (0.4%) reduced the pre-emergence mortality from 26.50 to 8.25% and post-emergence mortality from 39.00 to 16.25%. The integration of seed treatment and pre-sowing drenching resulted in 72.51% control of pre emergence mortality and 82.92% control of post emergence mortality. In dual culture method, maximum inhibition of mycelial growth was recorded with Trichoderma harzianum (72.18%) followed by T. viride (67.70%). Glomus mosseae in combination with T. harzianum was found very effective against F. solani under screen house conditions as minimum pre emergence mortality (10.00%) and post emergence mortality (13.25%) against control where the values were 27.25% and 40.25%, respectively. The studies and results compiled here in provide an explanation for the potential of selected fungicides and antagonists in the control of bael root rot disease

Plant growth-promoting rhizobacteria induced resistance in Jatropha curcas through phenyl propanoid metabolism against Rhizoctoniabataticola

The root rot disease in Jatropha curcas L. caused by Rhizoctonia. bataticola (Taub.) Butler has been recorded in causing 10-12 per cent mortality of 20-30 days old seedlings of Jatropha curcasin southern Haryana. The incidence of this disease has also been observed from other parts of Haryana too. Induction of systemic resistance in host plants through microbes and their bioactive metabolites are attaining popularity in modern agricultural practices. Studies on the plant growth-promoting rhizobacteria induced resistance in Jatropha curcas through phenyl propanoid metabolism against Rhizoctoniabataticola were undertaken at Chaudhary Charan Singh, Haryana Agricultural University, Regional Research Station, Bawal. Three plant growth-promoting rhizobacteria (PGPRs) viz., Pseudomonas maltophila, Pseudomonas fluorescens and Bacillus subtilis were evaluated for their potential to induce systemic resistance in Jatropha against root rot. The maximum increase of 97 per cent in total phenols, 120 per cent in peroxidase, 123 per cent in polyphenol oxidase, 101 per cent in phenylalanine ammonia lyase and 298 per cent in tyrosine ammonia lyase was detected in plants raised with Pseudomonas fluorescens+ Rhizoctoniaba-taticola inoculation in Jatropha curcas at 10 days post inoculation against control except total phenols where it was maximum (99%) at 30 DPI. There was slight or sharp decline in these parameters with age irrespective of inoculations. The pathogen challenged plants showed lower levels of total phenols and enzymes. The observations revealed that seed bacterization with Pseudomonas fluorescens results in accumulation of phenolics and battery of enzymes in response to pathogen infection and thereby induce resistance systemically