Analytical Study of Modified RSA Algorithms for Digital Signature

Digital signature has been providing security services to secure electronic transaction. Rivest Shamir Adleman (RSA) algorithm was most widely used to provide security technique for many applications, such as e-mails, electronic funds transfer, electronic data interchange, software distribution, data storage, electronic commerce and secure internet access. In order to include RSA cryptosystem proficiently in many protocols, it is desired to formulate faster encryption and decryption operations. This paper describes a systematic analysis of RSA and its variation schemes for Digital Signature. DOI: 10.17762/ijritcc2321-8169.15031

Fuzzy Logic A Soft Computing Approach For E-Learning: A Qualitative Review

E-learning model has been developed rapidly because of development in technology, mobile platform such as smart phone and pad etc. But due to low rate of completion of e-learning platform it is necessary to analyze behavior characteristics of online learners which enhance the quality of learning. This can be achieved by recommending suitable e-contents available in learning servers that are based on learning style, learning pattern, time, environment, psychology and mood of learners. All these factors are uncertain. In such case fuzzy logic and neural network approach of soft computing is desirable to use and helps to take decision for prediction of e-learning. The aim of this paper is to study development and work in e-learning, adaptive learning and web-based learning globally. Also study for to develop reliable and efficient solution for e-learners and e-content provider. This paper represent studies of learning style prediction, learning style model, learning system and analysis of related work in e-learning and web environments. This is review of previous research in e-learning prediction

Evaluation of analgesic and anti-inflammatory activity of Levocetirizine in albino rats

Background: Levocetirizine, the R-enantiomer of Cetirizine has pharmacokinetically and pharmacodynamically favourable characteristics, with rapid onset of action, high bioavailability, high affinity for and occupancy of the H1-receptor, limited distribution, minimal hepatic metabolism together with minimal side effects. Non-steroidal anti-inflammatory drugs (NSAIDs) have been used for many years for analgesic, anti-inflammatory, and more recently in the case of aspirin, antithrombotic purposes. Because of the significant side effect profiles of steroidal and NSAID medications, there is a greater interest in newer compounds such as antihistaminic drugs. This article will consider the potential or otherwise of the reported analgesic and anti-inflammatory effects of levocetirizine to enhance its effectiveness in the treatment of allergic disease with pain.Methods: Albino Wistar rats of either sex weighing 150-250 grams were used. For both Analgesic activity and Anti-inflammatory activity, 4 groups consisting of 6 animals per group were used. Group I: Control: 1% Gum acacia. 2ml/kg, Group II: Standard drug: Diclofenac sodium 4.5mg/kg; Group III: Test Drug 1: Levocetirizine 1mg/kg; Group IV: Test Drugs 2: Levocetirizine 1mg/kg+Diclofenac sodium 4.5mg/kg. Drugs were administered orally. For analgesic activity, Tail clip method and Hot plate method was used. For acute anti-inflammatory activity Carrageenan induced rat paw oedema method was used.Results: Levocetirizine, is found to have significant analgesic activity in rats (1 mg/kg dose) alone and in combination with Diclofenac Sodium in Haffner’s Tail Clip method and Eddy’s Hot Plate Method. Levocetirizine also has got prominent anti-inflammatory activity in acute models evidenced by percentage inhibition of acute rat paw oedema.Conclusions: Levocetirizine possess analgesic and acute anti-inflammatory activity alone and in combination with Diclofenac sodium

Study of evaluation of anti-inflammatory activity of macrolide antibiotics in rats: an experimental study

Background: Inflammation is a complex and dynamic condition in which many changes take place at the site of inflammation, as well as systemically. In general, inflammatory response acts to protect the host, but many times it goes unchecked with tissue destruction leading to a spectrum of inflammatory disorders. Anti-inflammatory drugs have long been used to treat spectrum of inflammatory conditions. Anti-inflammatory agents, in use today, though have efficacy, cause a variety of side effects causing major problems during their clinical use. Amongst newer approaches to treat inflammation, macrolides, the anti-bacterial agents, seem to be beneficial in decreasing the inflammation. Still there is much speculation about the anti-inflammatory activity of macrolide antibiotics. So, we planned this study to assess anti-inflammatory activity of macrolide antibiotics (erythromycin, roxithromycin, azithromycin, and clarithromycin) and to compare their anti-inflammatory activity with control and indomethacin (standard non-steroidal anti-inflammatory drugs).Methods: To assess anti-inflammatory activity of macrolides, we used acute (carrageenin-induced paw edema and turpentine oil-induced arthritis), as well as chronic model of inflammation (cotton pellet induced granuloma).Results: All the macrolides, i.e., erythromycin, roxithromycin, azithromycin and clarithromycin showed significant (p<0.05) anti-inflammatory activity in acute models of inflammation as compared to control group. However, macrolides showed insignificant activity as compared to indomethacin (acute and chronic models of inflammation) and as compared to control (chronic model of inflammation).Conclusions: This study shows macrolide antibiotics have anti-inflammatory activity in animal models of acute inflammation

A study on the clinico-epidemiological profile and the outcome of snake bite cases in the tertiary care hospital

Background: Snake bite is a common medical emergency and an occupational hazard in India. It is also a major public health issue in rural India where farming is a major source of employment. Very few studies describe epidemiology of snake bite from India. Hence, this study was planned to collect information on various aspects of snake bite in a tertiary care hospital.Methods: A prospective observational study of 167 patients of snake bite and unknown bite carried out from September 1, 2012 to August 31, 2013.Results: Among a total 167 cases, majority were males (54.49%), aged between 20 and 40 years (38.92%). Most of the cases were laborers (61.67%) and farmers (17.36%). Peak incidence was observed during monsoon (64.67%). Bite mark was seen in 46.70% cases, upper extremity being common site (52.09%). Most cases were of vasculotoxic bite (65.26%) and few were of neurotoxic bite (19.76%). Major complications were respiratory failure (4.79%) and acute renal failure (1.8%). Average bite to needle time was 365 min. Bleeding & clotting time was raised in 44.03% & 35.19% cases, respectively. Average dose of anti-snake venom (ASV) required was 17.1 vials. Allergic reactions to ASV observed in 8.38% cases. Mean duration of hospital stay was 4.3 days. Recovery rate was 94.01% with three cases referred to higher center. Mortality rate was 2.39%.Conclusions: Our study highlights various aspect of snake bite cases and tries to find out ways to improve quality of life of patients, decrease mortality and morbidity and decrease economic burden on society

Evaluation of antidepressant activity of tramadol in mice: an experimental study

Background: In spite of availability of effective antidepressant drugs, depression continues to be a major problem. Hence, great interest is being taken in development of innovative antidepressants. Tramadol (TRM) is a centrally acting opioid agonist, which is clinically effective in the treatment of moderate to severe pain. By virtue of its action of inhibiting norepinephrine and serotonin uptake, it can function as an antidepressant like venlafaxine. Hence, this study was planned to evaluate antidepressant activity of TRM in comparison and in combination with fluoxetine (FLX) in albino mice.Methods: TRM (20 and 40 mg) and FLX (20 mg) were administered i.p., alone and in combination once daily for acute (7 days) and chronic (14 days) period to Swiss albino mice of either sex. The immobility period of control and treated mice was recorded in forced swimming test (FST) and tail suspension test (TST). The open field test was also done for same period to test the locomotor activity in animal. The antidepressant effect of TRM was compared with FLX and normal saline treated group for acute and chronic study period.Results: TRM (20 and 40 mg) treated group produced significant antidepressant effect alone and in combination with FLX (20 and 40 mg) as indicated by reduction in immobility period compared with control group in FST and TST. TRM and FLX treated groups did not show significant activity in open field test when compared with control group.Conclusions: This study shows TRM has antidepressant activity in standard models of depression

Timely use of anti-snake venom improves maternal and fetal outcome: a case report

Snake bite is a common medical emergency and an occupational hazard in a rural population of India. Though it is uncommon in pregnancy, it is associated with poor maternal and fetal outcome. Early gestational age and delay in the treatment are the factors responsible for unfavorable prognosis. Here, we report a case of primigravida, aged 22 years, with 22 weeks of gestation presenting with a history of snake bite on the left frontal region of the face. While on anti-snake venom treatment, patient developed anaphylactic reaction. In spite of this, the maternal and the fetal outcome were good in this case

Comparative Evaluation of Azadirachta indica (Neem) Chip and Soft Tissue Diode Lasers as a Supplement to Phase i Periodontal Therapy in Localized Chronic Moderate Periodontitis: A Randomized Controlled Clinical Trial

Introduction. The current trial aimed to assess and compare the efficacy of neem chip and diode laser as a local drug delivery (LDD) agent as a supplement to phase I periodontal therapy in treatment of localized chronic moderate periodontitis. Materials and Methodology. Fourteen systemically healthy participants with 4-6 mm deep periodontal pockets at least in three quadrants (with no alveolar bony defect amenable to respective or regenerative osseous surgery, as seen in orthopantomograph) were selected for the trial. One week after phase I therapy, 10% absorbable chip of neem (commercially prepared by staff of a pharmacy college, Sheriguda, India) was placed in the periodontal pocket on one site, and soft tissue diode laser pocket sterilization was performed on the other site of the arch. Remaining one site was considered as a control. Parameters recorded clinically were plaque index (PI), papillary bleeding index (PBI), probing pocket depth (PPD), and relative attachment level (RAL) measured at baseline, 21st day, and one month postoperatively. Results. Statistically significant improvements were observed in all clinical parameters at one month as compared to baseline for both treatment groups. Conclusion. Neem chip supplemented with phase I therapy showed best improvement in clinical parameters followed by laser supplemented with phase I therapy in comparison to phase I therapy alone at one month follow-up. Clinical Significance. Neem chips are nature's products, affordable without side effects, with a potential to be used as a local drug delivery agent in treating moderate chronic periodontitis

Methylphenidate improves executive functions in patients with traumatic brain injuries : a feasibility trial via the idiographic approach

Background: Road traffic accidents are known to be the main cause of traumatic brain injury (TBI). TBI is also a leading cause of death and disability. This study, by means of the idiographic approach (single-case experimental designs using multiple-baseline designs), has examined whether methylphenidate (MPH - trade name Ritalin) had a differential effect on cognitive measures among patients with TBI with the sequel of acute and chronic post-concussion syndromes. The effect on gender was also explored. Methods: In comparison with healthy controls, patients with TBI (acute and chronic) and accompanying mild cognitive impairment (MCI) were screened for their integrity of executive functioning. Twenty-four patients exhibiting executive dysfunction (ED) were then instituted with the pharmacological intervention methylphenidate (MPH). The methylphenidate was administered using an uncontrolled, open label design. Results: The administration of methylphenidate impacted ED in the TBI group but had no effect on mood. Attenuation of ED was more apparent in the chronic phases of TBI. The effect on gender was not statistically significant with regard to the observed changes. Conclusions: To our knowledge, this is the first feasibility trial from the Arabian Gulf to report the performance of a TBI population with mild cognitive impairment according to the IQCODE Arabic version. This investigation confirms anecdotal observations of methylphenidate having the potential to attenuate cognitive impairment; particularly those functions that are critically involved in the integrity of executive functioning. The present feasibility trial should be followed by nomothetic studies such as those that adhere to the protocol of the randomized controlled trial. This evidence-based research is the foundation for intervention and future resource allocation by policy- or public health decision-makers