A novel technique for improved performance in wireless communications

Abstract: A limited amount of bandwidth is allocated for wireless services. A wireless system is required to accommodate as many users as possible by effectively sharing the limited bandwidth. Therefore, in the field of communications, the term multiple access could be defined as a means of allowing multiple users to simultaneously share the finite bandwidth with least possible degradation in the performance in the system. Fourth Generation is the next generation of wireless network multiple access technique OFDM /OFDMA network in future.4G is intended to provide high speed, high capacity; low cost per bit, IP based services.4G is all about an integrated, global network that's based on an open system approach. In this paper, we present an overall vision of the performance analysis of wireless communication system by using multiple access OFDM scheme. We will compare different multiple access strategies, OFDMA, and performance analysis of conflict free multiple access method OFDM in terms of performance relation between BER and SNR in wiMAX technology

AN ETHNO-PHARMACOLOGICAL EVALUATION OF CATUNAREGAM SPINOSA (THUMB.) TIRVENG FOR ANTIOXIDANT ACTIVITY

Catunaregam spinosa (Thumb.) Tirveng have been reported in studies to possess antioxidant property. Therefore, present study was undertaken to validate different extracts of C. spinosa for antioxidant activity along with safety margin, according to OECD guidelines for toxicity. The extracts of different solvents, such as, distilled water, ethanol, methanol, acetone, chloroform; petroleum ether and benzene were subjected to phytochemical screening and characterization was done by using UV-Visible spectrophotometer. The toxicity studies displayed considerable margin of safety and no adverse effects observed upto 2gm/kg of administration of extract. The antioxidant property of extract of C. spinosa was evaluated for DPPH and FRAP activity. The IC50 value for DPPH activity was found to be 85% and the FRAP was found to be 2.5 μg/ml. These results when compared to standard values indicate towards superior antioxidant potential of C. spinosa extract

Anti-Inflammatory, Analgesic and Antipyretic Activity of Catunaregam spinosa (Thumb.) Tirveng Extracts

Catunaregam spinosa leaves have been ethnopharmacologically accounted for acquiring various pharmacological properties. The present study was undertaken to evaluate anti-inflammatory, analgesic and antipyretic potential of leaves of C. spinosa.The ethanolic extract was selected for this purpose based on phytochemical screening. Inflammation was inhibited at the dose of 200 mg/kg with percent inhibition of inflammation 32.06, 37.28 and 43.16 %, respectively, at 1, 3 and 5 h, while in egg albumin model % inhibition was found to be 47.81%. There was no significant analgesic activity seen in acetic acid induced writhing response method while significant effects were observed in the doses of 25 and 100 mg/kg on hot plate test. No antipyretic activity was shown by ethanolic extracts(25, 100 and 200 mg/kg) against Brewer’s yeast induced pyrexia in rats. Keywords: Catunaregam spinosa, Anti-inflammatory activity, Phytochemical screening, Ethanolic extract

RAPID DETECTION OF MULTI DRUG RESISTANCE AMONG MULTI DRUG RESISTANT TUBERCULOSIS SUSPECTS USING LINE PROBE ASSAY

Objective: GenoType MTBDRplus line probe assay (LPA) is developed for performing drug susceptibility testing (DST) for Rifampicin (RIF) and isoniazid in sputum specimens from smear-positive pulmonary tuberculosis (TB) patients and revised national TB control Programme (RNTCP) has endorsed LPA for the diagnosis of multi drug resistant TB (MDR-TB). This study was conducted to assess the potential utility of LPA for MDR-TB patient management.Methods: MDR-TB suspects under RNTCP PMDT criteria C referred from different districts in Delhi state were included in the study January 2013 toDecember 2014. Sputum specimens found acid-fast bacilli positive by fluorescent microscopy were processed for LPA.Results: Out of 3062 specimens, 2055 (67.1%) MDR-TB suspects were read as positive and specimens from 1007 (32.9%) suspects were read as negative in sputum smear microscopy. Out of 2019 specimens valid LPA results, 1427 were found to be pan-sensitive, 280 were MDR-TB, 40 were RIF monoresistant, 183 were Isoniazid (INH) monoresistant, and 89 specimens were found negative for Mycobacterium tuberculosis.Conclusion: Routine use of LPA can substantially reduce the time to diagnosis of RIF and/or INH-resistant TB and can hence potentially enable earlier commencement of appropriate drug therapy and thereby facilitate prevention of further transmission of drug resistant strains.Keywords: Multi drug resistant tuberculosis, Line probe assay, Rifampicin, Isoniazid

A Comparative Study of In Vitro Antibacterial Activity Capacity of Leaf Extract of Zanthoxylum armatum (Timur)

Zanthoxylum armatum also known as Timru and toothache tree. This is a sub deciduous aromatic, branched, scandent, or erect shrub or a small tree that grows to 6–7 meter in height and belongs to the Rutaceous family. This plant is common in the hot valleys of the Himalayas from Jammu to Bhutan, Nepal, and Pakistan. It covers a considerable portion of Orissa and Andhra Pradesh in India This plant is considered as a divine plant in contiguous areas. The seeds contain many important phytoconstituents and essential oils which contribute to its biological activities including larvicidal, anti-inflammatory, analgesic, antinociceptive, antioxidant, antibiotic, hepatoprotective, antiplasmodial, cytotoxic, antiproliferative, anthelmintic, antiviral and antifungal. It contains alkaloids, essential oil, resins, sterols, triterpenes, glycosides, saponins, tannins and flavonoids.  Because of its Significant medicinal properties and excessive increase in demand has put this plant in the category of endangered plants. This research paper focuses on the Antibacterial activity of the zanthoxylum armatum plant

Large Solitary Fibrous Tumor (SFT) of the penis- a case report and review of literature

Abstract Background Solitary fibrous tumors (SFTs) are very rare spindle cell neoplasms of mesenchymal origin with largely benign course of disease. Genital SFT’s can be managed providing excellent functional and psychological outcomes by timely intervention. Case presentation We report the largest and possibly the second only reported case of penile SFT in a 34 year male presenting with a gradually increasing perineal mass with clinically normal appearing phallus. MRI revealed a 9.8 × 3.2 cm soft tissue mass arising from left corpora cavernosae, the mass was excised en-bloc via a perineal approach under spinal anaesthesia. Histopathology revealed spindle cell tumor embedded in myxohyaline stroma along with hyalinized vascular channels demonstrating IHC positivity for CD34 and STAT6. The patient is disease free post 2 years of resection with no sexual or urinary dysfunctions. Conclusion Genital SFTs, although rare, should be considered in the differential diagnosis of well-circumscribed, painless, slow growing solid masses and histopathologists must be vigilant of its malignant characteristics

CRISPR/Cas9-gene editing approaches in plant breeding

ABSTRACTCRISPR/Cas9 gene editing system is recently developed robust genome editing technology for accelerating plant breeding. Various modifications of this editing system have been established for adaptability in plant varieties as well as for its improved efficiency and portability. This review provides an in-depth look at the various strategies for synthesizing gRNAs for efficient delivery in plant cells, including chemical synthesis and in vitro transcription. It also covers traditional analytical tools and emerging developments in detection methods to analyze CRISPR/Cas9 mediated mutation in plant breeding. Additionally, the review outlines the various analytical tools which are used to detect and analyze CRISPR/Cas9 mediated mutations, such as next-generation sequencing, restriction enzyme analysis, and southern blotting. Finally, the review discusses emerging detection methods, including digital PCR and qPCR. Hence, CRISPR/Cas9 has great potential for transforming agriculture and opening avenues for new advancements in the system for gene editing in plants

N-methyl Benzimidazole Tethered Cholic Acid Amphiphiles Can Eradicate S. aureus-Mediated Biofilms and Wound Infections

Infections associated with Gram-positive bacteria like S. aureus pose a major threat as these bacteria can develop resistance and thereby limit the applications of antibiotics. Therefore, there is a need for new antibacterials to mitigate these infections. Bacterial membranes present an attractive therapeutic target as these membranes are anionic in nature and have a low chance of developing modifications in their physicochemical features. Antimicrobial peptides (AMPs) can disrupt the microbial membranes via electrostatic interactions, but the poor stability of AMPs halts their clinical translation. Here, we present the synthesis of eight N-methyl benzimidazole substituted cholic acid amphiphiles as antibacterial agents. We screened these novel heterocyclic cholic acid amphiphiles against different pathogens. Among the series, CABI-6 outperformed the other amphiphiles in terms of bactericidal activity against S. aureus. The membrane disruptive property of CABI-6 using a fluorescence-based assay has also been investigated, and it was inferred that CABI-6 can enhance the production of reactive oxygen species. We further demonstrated that CABI-6 can clear the pre-formed biofilms and can mitigate wound infection in murine models