Appraising the Modulation Techniques for Wireless Sensors

Optical wireless sensors are moderately find its place in the advanced wireless optical communication. These wireless sensors are short range sensors basically for indoor applications operated on infrared frequency. Applications such as remote environmental monitoring and target tracking has been enabled by the availability, particularly in recent years of sensors that are smaller, cheaper, and intelligent. In this paper, we are designing a optical wireless system for indoor system and discus its modulation technique.. The system will operate on the data rate of 1Gbps and evaluate the result in the form of eye diagram Frequency measurements are conducted to characterize the link up to 1 GHz, and are transformed to obtain impulse responses and eye diagrams, further MIMO can be used for reducing the multipath delay

Maladaptive cognitive appraisals in children with high-functioning autism : associations with fear, anxiety and theory of mind

Despite the well-documented success of cognitive restructuring techniques in the treatment of anxiety disorders, there is still little clarity on which cognitions underpin fear and anxiety in children with high-functioning spectrum disorders (HFASD). This study examined whether certain cognitive appraisals, known to be associated with fear and anxiety in non-HFASD groups, may help explain these emotions in children with HFASD. It also investigated relations between these cognitive appraisals and theory-of-mind (TOM). Using a vignette approach, appraisals, fear and anxiety were assessed in 22 children with HFASD and 22 typically developing (TD) children. The two groups differed significantly on all four appraisal types. Anxiety was negatively correlated with future expectancy and positively with problem-focused coping potential in the HFASD group, but was not correlated with appraisals in the TD group. Emotion-focused coping potential was the only appraisal correlated with fear in the HFASD group and only self-accountability in the TD group. Linear regression analysis found appraisals of emotion-focused coping potential, problem-focused coping potential and future expectancy to be significant predictors of TOM ability in the HFASD group. These findings indicate that specific, problematic patterns of appraisal may characterise children with HFASD

TOLERANCE AGAINST HEAVY METAL TOXICITY IN CYANOBACTERIA: ROLE OF ANTIOXIDANT DEFENSE SYSTEM

The toxicity of heavy metals is reviewed with reference to Cyanobacteria. Cyanobacteria also known as blue green algae are primitive photosynthetic prokaryotic microorganism which has high economic importance due to various bioactive compounds. Cyanobacteria are exposed to heavy metal stress since these are widely distributed. Heavy metal enters into the cell through various interactions between metal ions and functional groups present at the cell surface and cause toxicity. Heavy metals also cause oxidative stress by generation of reactive oxygen species, including superoxide, hydrogen peroxide and hydroxyl radical which are highly reactive and toxic and cause damage to nucleic acid, protein, and lipid. Cyanobacteria have evolved strategies to overcome the effect of reactive oxygen species that include antioxidant enzymes such as superoxide dismutase, catalase, ascorbate peroxidase and Glutathione reductase

Revisiting Masculinity and Othering in Diasporic Fiction

Contemporary literary discourse has extensively deliberated upon the construction of the ‘self’ and the ‘other’ that not only legitimizes the politics of othering but also gives rise to the crisis of masculinity in the context of diaspora. Against this background, this article aims to examine the aspects of masculinity in diasporic fiction with a special reference to Buchi Emecheta’s Second Class Citizen (1974), Joan Riley’s Waiting in the Twilight (1987), and Hanif Kureishi’s The Buddha of Suburbia (1990). Deliberating upon the intersection of othering and masculinities, the present article intends to examine the experience of ‘masculinity crisis’ among men of colour in transnational settings. In this study, we explore what othering entails and how it threatens and disrupts men’s masculine self-concept, forcing them to negotiate respectable forms of male identity. A critical understanding and perspective on how the practice of othering causes a rupture in masculine identity may assist in understanding what men of colour are struggling with in a diasporic context and what types of intervention or mediation can mitigate or nullify the discursive practice of othering

A CLINICAL STUDY TO EVALUATE THE EFFECT OF SHANKHPUSHPYADI YOGA IN THE MANAGEMENT OF VYANBALVRIDDHI W.S.R. TO HYPERTENSION

Changing lifestyle is responsible for increase in number of people suffering from Hypertension, Stress, Diabetes mellitus, Obesity, Heart ailments and other Non Communicable diseases. Among these life-style disorders hypertension is an important public health challenge worldwide. The disease Hypertension has no such clear cut reference in Ayurvedic texts. Eminent Ayurvedic scholar Vaidhya Brihaspati Dev Triguna Padam Vibhushan correlated high blood pressure with Vyana BalaVridhi. He postulated that increased Vyana Bala is responsible for increased Arterial pressure. Present study was conducted to explore evidence based therapeutic potential of Shankhpushpyadi Yoga in the management of Vyan Bal Vriddhi w.s.r. to Hypertension. The patients fulfilling the inclusion criteria and voluntarily wiling for trial were registered from O.P.D. & I.P.D. Dept. of Kayachikitsa R.G.G.P.G.AYU Hospital, Paprola. The Clinical trial was approved by I.E.C. The trial formulation contains Hydroalcoholic extract of Shankhpushpi 150 mg, Bhumyamlaki 250 mg, Punarnava 200 mg, Jatamanshi and Sarpagandha 100 mg each.  Clinical trial was of 45 days and total 30 patients were registered for the same.After45days analysis revealed that out of 30 patients, 4 patients showed excellent improvement,15 showed marked, 7 showed mild improvement and no improvement was noted in 2 patients. The mean systolic blood pressure before treatment was 148.71 mm of Hg which dropped to 140.14 mm of Hg at the end of 45 days therapy, with 5.28% reduction. The mean diastolic blood pressure before treatment was 95 mm of Hg which dropped to 87.142 mm of Hg at completion of trial with 8.27% reduction which was statistically significant.  Shankhpushpyadi yoga proved to be an effective and safe remedy for patients of Hypertension.&nbsp

Obesity in Children - An alarming problem in Kaumarbhritya

A roly-poly child obviously attracts many attentions but if the trend remains unchanged it could be a reason of worry as this is the primitive sign of childhood obesity which is the leading problem in today’s era. With continuous change in life style and dietary habits, child has become the victim of many diseases and obesity (Sthaulya) is one of them. There are and were some human activists talking about reducing the weight of study bags; but none is thinking about the weight our babies are carrying. In present era both parents are working, to earn the luxuries and amusements, so the kids are left with the food packets at home with idiot boxes to see some “de-shaped” cartoons resulting in the reduction of healthy nutritious diet and also reducing their body activity. The body weight of our babies is putting pressure on their “cuteness”, their “happiness”, their “emotions” and on their “being”. In Ayurveda it needs step by step examination and treatment to break the ‘Dushtasamprapti Chakra’ of Sthaulya by both non pharmacological such as Yoga and pharmacological remedies such as Panchakarma therapy, Shamana therapy etc. to achieve the goal

Structural and functional characterization of bacterial diversity in the rhizospheres of three grain legumes

The aim of this study was to increase the understanding of diversity and activity of dominant bacterial populations in the rhizospheres of three economically important grain legumes (Vicia faba, Lupinus albus and Pisum sativum). A cultivation-independent approach was employed to achieve this aim bearing in mind the limitation of cultivation-dependent technique that only 10% of bacteria present in rhizosphere can be cultured. PCR amplification of 16S rDNA and subsequent separation of the amplicons by DGGE was used in an initial screening of replicates for experimental variation and for the first characterization of bacterial community composition of the three rhizospheres under study. Specific profiles generated by the three legumes, derived by both 16S rDNA and rRNA, emphasized the need to perform detailed analysis of the communities present in these rhizospheres. Clone libraries for PCR and RT-PCR products were generated for representative samples of all the three legumes. Firmicutes were found to be the most dominant in all the legumes, both in DNA- and RNA-derived libraries, indicating them to be the most active group as well. A plant-dependent rhizosphere effect was reflected by the absence of ?-subdivision members in Pisum and ?-subdivision members of proteobacteria in Vicia rhizosphere. High numbers of as yet unclassified bacteria were also obtained. With this experimental set-up, using the same soil material but three different legumes and a uniform inoculation with Rhizobium sp., it became evident that plant roots influence the development of bacterial communities in the rhizosphere in a plant-specific manner. The extent of the rhizosphere effect could vary in natural field conditions as the present study was performed under controlled conditions in green house using soil from agricultural site. Extraction and analysis of rRNA has enabled identification of active taxa in the present study. Fingerprints were obtained for total RNA using two different primers. The profiles generated revealed marked differences between the three rhizospheres of the three legumes under study, indicating differences between the metabolic status of the bacterial communities present in the rhizospheres of these three legumes. To address the question of functional diversity, mRNA extraction and subsequent RT-PCR were performed for various genes important in nutrient cycling. The presence of chitinase genes could be established by specific PCR amplification using DNA extracted from the three rhizospheres. However, no expression of the gene could be detected by RT-PCR. Enzyme assays confirmed no or very low levels of the chitinase protein in the rhizospheres. Analysis of proteolytic enzymes (serine and neutral metallopeptidases) showed the presence and activity of serine peptidase in the three rhizospheres. Neutral metallopeptidase gene was also present in the three rhizospheres but no expression could be detected in the Lupinus rhizosphere. This was a confirmation of plant-dependent effect at the level of functioning of the bacterial communities. Genes for nitrite reductase (nirK and nirS), which may lead to removal of nitrogen from the system by denitrification, were targeted to gain an understanding of the importance of this enzyme in a nitrogen-enriching environment. The presence of nirS was not detected in any of the legume rhizospheres, but both the presence and activity of nirK was established for the three rhizospheres. The diversity of this gene was investigated by generating clone libraries with the RT-PCR products from the three plant rhizospheres. The observation of distinct differences in the distribution of phylotypes of expressed nirK gene in the three legume rhizospheres confirmed a plant specific effect on the functions of the rhizosphere bacterial communities. The present study revealed a hitherto unknown diversity of rhizospheric bacteria associated with grain legumes. Entirely cultivation-independent approaches to characterize the structure and function of the bacterial community of the rhizosphere of the three grain legumes clearly revealed plant-dependent rhizosphere effect on bacterial community structure and function

Plasma Membrane-Associated Restriction Factors and Their Counteraction by HIV-1 Accessory Proteins.

The plasma membrane is a site of conflict between host defenses and many viruses. One aspect of this conflict is the host's attempt to eliminate infected cells using innate and adaptive cell-mediated immune mechanisms that recognize features of the plasma membrane characteristic of viral infection. Another is the expression of plasma membrane-associated proteins, so-called restriction factors, which inhibit enveloped virions directly. HIV-1 encodes two countermeasures to these host defenses: The membrane-associated accessory proteins Vpu and Nef. In addition to inhibiting cell-mediated immune-surveillance, Vpu and Nef counteract membrane-associated restriction factors. These include BST-2, which traps newly formed virions at the plasma membrane unless counteracted by Vpu, and SERINC5, which decreases the infectivity of virions unless counteracted by Nef. Here we review key features of these two antiviral proteins, and we review Vpu and Nef, which deplete them from the plasma membrane by co-opting specific cellular proteins and pathways of membrane trafficking and protein-degradation. We also discuss other plasma membrane proteins modulated by HIV-1, particularly CD4, which, if not opposed in infected cells by Vpu and Nef, inhibits viral infectivity and increases the sensitivity of the viral envelope glycoprotein to host immunity