In modern world, to spread the confusion and panic among the people terrorist can use biological weapon. In such Bioterrorism attack health professionals plays a key role. This paper reviews the historical aspect, definition, classification of bioterrorism agents and the role of dentistry in such catastrophic event.
Background: Dental caries is a disease that occurs when bacteria, predominantly Streptococcus mutans, colonizes the tooth surface and metabolizes the dietary carbohydrates to acids, resulting in demineralization of teeth. Interventions that can inhibit the growth and survival of streptococcus mutans are crucial to reduce dental caries. Cocoa bean husks, extracted from the shells of cocoa beans have shown to possess anti glucosyltransferase and antibacterial activities. Aim of our study was to evaluate in-vitro antimicrobial activity of ground husk of cocoa beans with and without xylitol on streptococcus mutans. Methods – The study was carried out using 96 well microtiter plate and these were divided into three groups. Group I consisted of Extracted powder of cocoa bean (CBH), Group II was of extracted powder of cocoa bean and xylitol (CBH+X) and Group III consisted of Chlorhexidine (0.12%) (CHX). Minimum Inhibitory concentration was assessed using 96 well micro-titer plate. Standardized strain of Streptococcus Mutans 25175D was used. Results – No anti-microbial activity was seen for group I (CBH) and group II (CBH+X) at concentrations of 0.3%. However, chlorhexidine (0.12%) showed its antibacterial activity at its first concentration only. Conclusions – It was found that ground husk of cocoa bean at 0.3% does not possess any antimicrobial property in in-vitro trial. Addition of xylitol had no effect on increasing antibacterial property.
Key management in cryptosystem has more security concerns. In traditional cryptosystem key is generated randomly and very difficult to remember. The keys generated from biometric features provide better option than traditional cryptographic key management techniques such as password based key generations. Cancelable biometric is a customized technique in biometric based cryptography, where Cancelable Biometric refers to the intentional and systematically repeatable distortion of biometric features in order to protect sensitive user-specific data. This paper presents the survey conducted for same of the cancelable biometric key generation techniques. K = K + temp //interpret as 1 end if temp = temp * 2 end for return K After applying algorithm 1 and 2 mentioned above both sender and receiver can independently generate 128 bit key.Subhas et al. proposed an option to revoke cryptographic key. If the key is compromised by the attacker, he is not able to know about the fingerprint data from the key. If the biometric data becomes compromised by a third party, he is not able to generate the same key from the fingerprint. This approach involves mainly three subsections, namely, Feature extraction, template generation and key generation [8].
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