Birla Institute of Technology, Mesra

About: Birla Institute of Technology, Mesra is a education organization based out in Ranchi, India. It is known for research contribution in the topics: Computer science & Dielectric. The organization has 2801 authors who have published 4789 publications receiving 52426 citations. The organization is also known as: BIT.

Poly(m-aminophenol)/functionalized multi-walled carbon nanotube nanocomposite based alcohol sensors

Abstract: Carboxyl-functionalized multi-walled carbon nanotube ( c -MWCNT) reinforced poly( m -aminophenol (PmAP) nanocomposite film was fabricated by in-situ chemical oxidation polymerization of m -aminophenol in presence of c -MWCNTs, and exploited it as an effective sensor material for detection of aliphatic alcohols. The presence site-selective interaction between the conjugated PmAP chain and the π-bonded surface of c -MWCNT was confirmed by Fourier transform infrared (FT-IR) and Raman spectroscopy. The morphological analysis of the nanocomposite showed the formation of PmAP coating (thickness ∼100 nm) on the CNT surfaces. The X-ray and electron diffraction patterns of the nanocomposites indicated the crystalline nature of the PmAP matrix. The nanocomposite with small quantity of c -MWCNT (2 wt%) was found to have sensing response about 114% and 96% higher than that of pure PmAP for methanol and ethanol vapor (90 ppm). This dramatic improvement of sensing performance might be attributed to the favorable interactions of c -MWCNTs with conjugated PmAP chains that subsequently generate a pathway for possible H-bonding/dipole interaction with the alcohol molecules. The nanocomposite sensor also exhibits distinct features of the response curves and responsivity values for different aliphatic alcohols, which could be used as a basis for the selective detection of these pollutant vapors. The UV–vis and FT-IR analyses were used to explain the sensing mechanism.

Letter to the Editor: Stability Concerns in Smart Grid with Emerging Renewable Energy Technologies

Abstract: The environmental concerns due to conventional power plants have given impetus for widespread utilization of renewable energy based distributed generation technologies. As a consequence, the concepts pertaining to a smart grid with advanced functional architecture are evolving to incorporate these technologies. Many such smart grid strategies are focused on maximum utilization of renewable energy sources compared to conventional fossil or nuclear fuels for meeting real-time load demand. The diverse characteristics of renewable energy based distributed generation technologies compared to conventional power plants have led to many operational stability concerns for the smart grid. This article discusses these stability concerns in smart grid with distributed generation technologies.

Evaluation of wound healing, antioxidant and antimicrobial efficacy of jasminum auriculatum vahl. leaves

Abstract: Objective: To validate the ethno-therapeutic claim of the traditionally used plant Jasminum auriculatum (J. auriculatum) in skin diseases, by evaluating its wound healing potential along with its antioxidant and antimicrobial properties; so as to understand their role in wound healing. Materials and Methods: Excision and incision wound models were used to evaluate the wound healing activity on albino rats. The wound healing potential was assessed by measuring rate of wound contraction, epithelialization period, hydroxyproline content, skin breaking strength and histopathological parameters. Reference standard drug was Nitrofurazone ointment. The antioxidant activity was determined using 2, 2-diphenyl-1picrylhydrazyl (DPPH) method. The antimicrobial activity was determined by agar well diffusion method and minimum inhibitory concentration by serial dilution method. Results: Higher rate of wound contraction (83.66±0.50% on 15th day), decrease in the period of epithelialization (17.83±1.6days), higher skin breaking strength (170.71±1.52g), higher collagen content and favourable histopathological changes revealed that topical application of ointment containing successive ethanolic extract (S.E.E) of J. auriculatum leaves has the most potent wound healing ability compared to control group in both the models studied. The DPPH radical scavenging activity of successive ethanolic extract was found to be 33.39µg/ml. Successive ethanolic extract was found to be most effective against Pseudomonas auregenosa having a zone of inhibition 16.65±0.6mm and the minimum inhibitory concentration was 0.78mg/ml. Conclusion: The data of this study indicate that successive ethanolic extract of the leaves exhibit potent wound healing, antioxidant and antimicrobial properties. This justifies the ethnomedicinal use of plant for the treatment of wound and microbial infections.

Cyber ethics and cyber crime: A deep dwelved study into legality, ransomware, underground web and bitcoin wallet

Abstract: Future wars will be cyber wars and the attacks will be a sturdy amalgamation of cryptography along with malware to distort information systems and its security. The explosive Internet growth facilitates cyber-attacks. Web threats include risks, that of loss of confidential data and erosion of consumer confidence in e-commerce. The emergence of cyber hack jacking threat in the new form in cyberspace is known as ransomware or crypto virus. The locker bot waits for specific triggering events, to become active. It blocks the task manager, command prompt and other cardinal executable files, a thread checks for their existence every few milliseconds, killing them if present. Imposing serious threats to the digital generation, ransomware pawns the Internet users by hijacking their system and encrypting entire system utility files and folders, and then demanding ransom in exchange for the decryption key it provides for release of the encrypted resources to its original form. We present in this research, the anatomical study of a ransomware family that recently picked up quite a rage and is called CTB locker, and go on to the hard money it makes per user, and its source C&C server, which lies with the Internet's greatest incognito mode-The Dark Net. Cryptolocker Ransomware or the CTB Locker makes a Bitcoin wallet per victim and payment mode is in the form of digital bitcoins which utilizes the anonymity network or Tor gateway. CTB Locker is the deadliest malware the world ever encountered.