77 research outputs found
Key-Based Cookie-Less Session Management Framework for Application Layer Security
The goal of this study is to extend the guarantees provided by the secure transmission protocols such as Secure Sockets Layer (SSL) or Transport Layer Security (TLS) and apply them to the application layer. This paper proposes a comprehensive scheme that allows the unification of multiple security mechanisms, thereby removing the burden of authentication, mutual authentication, continuous authentication, and session management from the application development life-cycle. The proposed scheme will allow creation of high-level security mechanisms such as access control and group authentication on top of the extended security provisions. This scheme effectively eliminates the need for session cookies, session tokens and any similar technique currently in use. Hence reducing the attack surface and nullifying a vast group of attack vectors
Fat embolism syndrome: a case series and review of literature
Fat embolism and fat embolism syndrome (FES) is a clinical spectrum characterized by dissemination of fat emboli into the systematic circulation usually as a result of orthopedic trauma and related surgical procedures. we present a case series of three patients who had FES of variable presentation and severity. In our first case patient initially developed FES pre operatively which was complicated by acute pulmonary thromboembolism in the post operative period. In our third case patient developed FES after intra medullary nail fixation of femoral shaft fracture. Fat embolism is relatively rare but fatal complication in orthopedic trauma and during long bone fracture manipulations. In addition, fat embolism is a risk factor for pulmonary thromboembolism as was evident in our first case. So, patients of fat embolism should be closely monitored for the later. Gurd and Wilson are the most commonly used criteria for the diagnosis of FES. Treatment is largely supportive and some preventive measures include early fixation of long bone fractures. Prophylactic use of steroids in a meta-analysis has been found to prevent occurrence of FES in nearly two third of patients. There is no proven role of hypertonic dextrose infusion, heparin or corticosteroids in the treatment of FES and therefore are not routinely recommended. In case of fulminant FES steroids should be considered
Preparation and quality characterization of soy milk based non-dairy ice cream
Soy milk made from soybean has prospective to be used as a substitute of milk due to its health benefits. It is a rich source of iso-flavones, omega-3-fatty acid, dietary fiber, vitamin C, carotenoids, protein and oligosaccharides. The current study was designed to examine the effects of galacto-manan on ice cream by using commercially available (silk) and locally prepared soy milk. Galacto-mannan (guar gum) was used in different concentration (0.3, 0.4, 0.5 and 0.6%) for the preparation of ice cream. Ice cream was analyzed for physico-chemical and sensory characteristics at 0, 30 and 60 days of storage interval. Overrun, meltdown, viscosity, total solids, pH and acidity were affected significantly by ice cream samples as well as storage. While non-significant effects of stabilizer and storage were found on fat, protein, and ash contents of ice cream. On organoleptic evaluation, the highest scores were awarded to the ice cream sample prepared with 0.5% of guar gum. Ice cream manufactured with locally prepared soy milk and guar gum revealed comparable quality with lower cost
Recent advancements in oxadiazole-based anticancer agents
Oxadiazole ring system occupies a significant position among heterocyclic templates for medicinal compounds due to its wide spectrum of biological activities. This article entails an in-depth review of the ability of oxadiazole derivatives to induce apoptosis of cancer cells. FDA has approved a number of drugs for the treatment of different types of cancer. There is, however, a continuing need for the development of new anticancer agents due to increasing cases of drug resistance. Moreover, medicinal chemists are continuously struggling to invent selective cytotoxic agents with minimum side effects. This work reviews the significance of oxadiazole ring system and its potential to act as a template for novel anticancer agents.Keywords: Oxadiazole ring system, Anticancer activity, Antitumor activity, Cytotoxicity, Apoptosi
Locking Versus Non-Locking Miniplates in the Treatment of Mandibular Fractures in Above 35 Years Age Patients
Objective: To compare the frequency of short term post-operative infection of locking plates versus non-locking plate in mandibular fractures in patients above 35 years of age.
Methodology: A randomized controlled study was conducted at the Department of Oral and Maxillofacial Surgery, Pakistan Institute of Medical Sciences, Islamabad from January 2018 to January 2019, involving a 100 patients (50 patients in each group). On the basis of history, clinical features, orthopantomogram (OPG) and intraoperative findings, the diagnosis of mandibular fractures was established. Group A patients were treated with reduction and fixation of fracture with locking miniplates and miniscrews following champy’s principle of osteosynthesis. Whereas in group B patients, fractures were reduced and fixed with non-locking miniplates and miniscrews following champy’s principle of osteosynthesis.
Results: Effect modifiers such as age, gender, and type of fracture were controlled by stratification. A post-stratification chi-square test was applied. The 1 patient that had infection in group A had an age range 50- 65 years (53 years) (P value: 0.197) while the 2 patients that had infection in group B were younger in age range of 35-50 years (36 years and 38 years) (P value: 0.322). The 1 patient who had infection in group A was female (P value: 0.043) while the 2 patients of group B who had infection were also females (P value: 0.027). In group A, only 1 patient had infection at the para-symphysis of mandible according to site (P value: 0.494). In group B, 1 patient had infection at para-symphysis of mandible and 1 at the body of the mandible site (P value: 0.599). The results were not statistically significant in terms of infection by the end of 3rd week.
Conclusion: The study concludes that insignificant post-operative infection rates while managing mandibular fractures either by locking plates or non-locking plates.
Customized vacuum assisted closure therapy of wounds as a simple and cost-effective technique of wound closure-a prospective observational study from underdeveloped world
Background: Aim of the study was to study the efficacy and cost-effectiveness of indigenously designed customized vacuum assisted closure (VAC) of wounds in our patients. The management of difficult to heal wounds has been the main force that led to the development of advanced gadgets for their management. The technique of vacuum assisted closure has revolutionized the management of difficult to heal wounds and delivers better results as compared to conventional technique. Our aim was to assess the efficacy and cost effectiveness of customized VAC therapy.Methods: This prospective study was conducted in the department of surgery and allied specialties, GMC Srinagar, from June 2018 and September 2020. During this period, 80 patients were subjected to VAC therapy and were included in this study.Results: VAC dressing was used in 80 patients. 55 were males and 25 were females. Most of the wounds in our study were located over lower limbs (70%). RTA was the most common mode of injury followed by fall from height. After the VAC therapy, 78.8% patients were managed by STSG, 11.3% by flap cover, 6.3% by secondary suturing and 3.8% healed by secondary intention. Pain was experienced by 30% of the patients, 7.5% had hypoalbuminemia, 3.8% had surrounding skin maceration. The average total cost of the VAC therapy was 863.13 (±399.82) Indian rupees (11.76 USD). The mean duration of hospital stay for our patients was 22 days.Conclusions: Customized VAC Therapy has revolutionary potential in the management of the difficult to treat wounds as far as its safety, speed and cost effectiveness is considered especially in a setup of poor income nations like ours
Antidiabetic potential of Nigella sativa L seed oil in alloxaninduced diabetic rabbits
Purpose: To evaluate the antidiabetic, hypolipidemic and antioxidant potential of seed oil of Nigella sativa L (NSO).
Methods: Nigella sativa seed oil (NSO) was extracted with Soxhlet apparatus using petroleum ether, and was given orally at a dose of 2.5 ml/kg body weight to alloxan-induced diabetic rabbits daily for 24 days. Biochemical parameters including total cholesterol (TC), triglycerides (TGs), low density lipoprotein cholesterol (LDL), very low lipoprotein cholesterol (VLDL), high density lipoprotein (HDL) and plasma glucose were determined in the treatment and control groups. Furthermore, bilirubin, vitamin C, catalase and mean body weight were assessed.
Results: NSO treatment significantly lowered serum blood glucose levels and lipid contents, but increased the mean body weight, HDL-C and vitamin C levels of diabetic rabbits (p < 0.001). Moreover, NSO significantly decreased catalase activity, TC, TGs, LDL-C and VLDL-C levels, but normalized bilirubin levels in diabetic rabbits.
Conclusion: These results indicate that NSO possesses significant antidiabetic potential. Thus, it may be useful as an adjunct with antidiabetic medication but further studies are required to ascertain this.
Keywords: Black cumin, Diabetes, Hypoglycemic, Hypolipidemic, Antioxidant
Variations in physico-chemical and antioxidant attributes of grape seed oil as function of extraction techniques
The aim of the current research work was to assess and compare the impact of two extraction techniques on the physico-chemical, and antioxidant parameters of grape seed oil (GSO). The GSO extracted by Soxhlet and Folch methods indicated a notable variation in the oil yield (8.58 % and 10.19%) and saponification value (196.35 and 189.33 mg of KOH g-1), respectively. However, no significant (p<0.05) variation was detected for density, acid value, refractive index, iodine no, unsaponifiable matter, and free fatty acids between the tested two oils. Meanwhile, the oil produced by Soxhlet method exhibited relatively a higher extent of unsaturated dienes, trienes, peroxide value, p-anisidine value, and thus poor oxidation state. A notable variation in the content of principal fatty acid (linoleic acid) was recorded between Folch extracted oil (70.11%) and Soxhlet extracted oil (66.57%). The contents of total tocopherols were noted to be considerably higher for Folch extracted oil (105.55 mg kg-1) than the Soxhlet extracted oil (73.70 mg kg-1). Among the individual phenolics analyzed by HPLC, gallic acid (14.02 mg kg-1) and caffeic acid (5.20 mg kg-1) were detected as major component in Folch extracted oil and Soxhlet extracted oil, respectively. The results of the present comparative study support that Folch method is relatively a good choice for the extraction of GSO with promising nutritive quality in terms of oxidation parameters, contents of linoleic acid and antioxidant phenolics
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