8,364 research outputs found
Castianeira bengalensis Biswas
No full text<p>96. <i>Castianeira bengalensis</i> Biswas</p> <p>1984. <i>Castianeira bengalensis</i> Biswas, <i>Bull.</i> zool. <i>Surv. India,</i> 6(1 -3): 120.</p> <p> <i>Material examined</i>: 3 (F), Zoo-Gardcn, Alipore, Calcutta, West Bengal, 12.iii. 1984, coll. Bijan Biswas.</p> <p> <i>Distribution</i>: India: West Bengal (Dist. Calcutta.)</p>Published as part of <i>Biswas, B. & Biswas, K, 1992, Fauna of West Bengal- Araneae: Spiders- Subfamily Corinnidae, pp. 422-428 in Fauna of West Bengal Part 3 (Arachnida and acari), Calcutta, India :Zoological Survey of India</i> on page 424, DOI: <a href="http://zenodo.org/record/892221">10.5281/zenodo.892221</a>
Environmental toxicity, redox signaling and lung inflammation:the role of glutathione
Get PDFGlutathione (gamma-glutamyl-cysteinyl-glycine, GSH) is the most abundant intracellular antioxidant thiol and is central to redox defense during oxidative stress. GSH metabolism is tightly regulated and has been implicated in redox signaling and also in protection against environmental oxidant-mediated injury. Changes in the ratio of the reduced and disulfide form (GSH/GSSG) can affect signaling pathways that participate in a broad array of physiological responses from cell proliferation, autophagy and apoptosis to gene expression that involve H(2)O(2) as a second messenger. Oxidative stress due to oxidant/antioxidant imbalance and also due to environmental oxidants is an important component during inflammation and respiratory diseases such as chronic obstructive pulmonary disease, idiopathic pulmonary fibrosis, acute respiratory distress syndrome, and asthma. It is known to activate multiple stress kinase pathways and redox-sensitive transcription factors such as Nrf2, NF-kappaB and AP-1, which differentially regulate the genes for pro-inflammatory cytokines as well as the protective antioxidant genes. Understanding the regulatory mechanisms for the induction of antioxidants, such as GSH, versus pro-inflammatory mediators at sites of oxidant-directed injuries may allow for the development of novel therapies which will allow pharmacological manipulation of GSH synthesis during inflammation and oxidative injury. This article features the current knowledge about the role of GSH in redox signaling, GSH biosynthesis and particularly the regulation of transcription factor Nrf2 by GSH and downstream signaling during oxidative stress and inflammation in various pulmonary diseases. We also discussed the current therapeutic clinical trials using GSH and other thiol compounds, such as N-acetyl-l-cysteine, fudosteine, carbocysteine, erdosteine in environment-induced airways disease
A low-complexity ECG feature extraction algorithm for mobile healthcare applications
Get PDFThis paper introduces a low-complexity algorithm for the extraction of the fiducial points from the Electrocardiogram (ECG). The application area we consider is that of remote cardiovascular monitoring, where continuous sensing and processing takes place in low-power, computationally constrained devices, thus the power consumption and complexity of the processing algorithms should remain at a minimum level. Under this context, we choose to employ the Discrete Wavelet Transform (DWT) with the Haar function being the mother wavelet, as our principal analysis method. From the modulus-maxima analysis on the DWT coefficients, an approximation of the ECG fiducial points is extracted. These initial findings are complimented with a refinement stage, based on the time-domain morphological properties of the ECG, which alleviates the decreased temporal resolution of the DWT. The resulting algorithm is a hybrid scheme of time and frequency domain signal processing. Feature extraction results from 27 ECG signals from QTDB, were tested against manual annotations and used to compare our approach against the state-of-the art ECG delineators. In addition, 450 signals from the 15-lead PTBDB are used to evaluate the obtained performance against the CSE tolerance limits. Our findings indicate that all but one CSE limits are satisfied. This level of performance combined with a complexity analysis, where the upper bound of the proposed algorithm, in terms of arithmetic operations, is calculated as 2:423N + 214 additions and 1:093N + 12 multiplications for N 861 or 2:553N + 102 additions and 1:093N +10 multiplications for N > 861 (N being the number of input samples), reveals that the proposed method achieves an ideal trade-off between computational complexity and performance, a key requirement in remote CVD monitoring systems
Castianeira aibopicta Gravely
No full text<p>95. <i>Castianeira aibopicta</i> Gravely</p> <p>1931. <i>Castianeira aibopicta</i> Gravely, <i>Rec. Indian Mus.,</i> 33 (3): 275.</p> <p>1981. <i>Castianeira aibopicta:</i> Tikadcr, <i>Bull.</i> zool. <i>Surv. India,</i> 4(3): 263.</p> <p> <i>Material examined</i>: 1 (F), Pashok, Dist. Darjiling, West Bengal, 25.v. 1916, coll. F.H. Gravely.</p> <p> <i>Distribution</i>: India: West Bengal (Dist. Darjiling); Bihar; Gujarat.</p>Published as part of <i>Biswas, B. & Biswas, K, 1992, Fauna of West Bengal- Araneae: Spiders- Subfamily Corinnidae, pp. 422-428 in Fauna of West Bengal Part 3 (Arachnida and acari), Calcutta, India :Zoological Survey of India</i> on page 424, DOI: <a href="http://zenodo.org/record/892221">10.5281/zenodo.892221</a>
Towards a casteless society / Swapan K. Biswas
No full textapplication/pdfapplication/pdf1st edIncludes bibliographical references (p. 88-89
Oedignatha Thorell
No full text<p>Genus 34. <i>Oedignatha</i> Thorell</p> <p>1881. <i>Oedignatha</i> Thorell, <i>Ann. Mus. Civ.</i> Star. <i>Nat. Genova</i>, <b>18</b>: 209.</p> <p>1931. <i>Oedignatha</i>: Gravely, <i>Rec. Indian. Mus.,</i> 33(3): 264.</p> <p>1934. <i>Oedignatha</i>: Rcimoscr, <i>Proc. zool. Soc. London</i>, (1): 15.</p> <p> <i>Diagnosis</i>: Cephalothorax oblonged, not narrow in front, sufficiently high with a very short central fovea. The cephalic sheild coming up to the posterior median eyes. The frontal row slightly recurved and the posterior row longer than the amcrior row, slightly procurved. The ocular quadrate almost squire. Chelicerae twice longer than its breadth inner margin provided with 5 to 9 teeth, outer margin with 3 teeth. Sternum oval in shape. Abdomen oblonged covered with sclerotized dorsal shield ornamented by whitish spot, sometimes dorsum provided by dorsal scoulum.</p> <p>The spiders of this genus are found in high altitude and low hilly region of foliage leaves.</p> <p> <i>Type-species</i>: <i>Oedignatha scrobiculata</i> Thorell.</p> <p> <i>Distribution</i>: India, Sri Lanka, Java, China.</p>Published as part of <i>Biswas, B. & Biswas, K, 1992, Fauna of West Bengal- Araneae: Spiders- Subfamily Corinnidae, pp. 422-428 in Fauna of West Bengal Part 3 (Arachnida and acari), Calcutta, India :Zoological Survey of India</i> on page 422, DOI: <a href="http://zenodo.org/record/892221">10.5281/zenodo.892221</a>
Dhyani, Veerendra Georgiev, Yordan M. Gangnaik, Anushka S. Biswas, Subhajit Holmes, Justin D. Das, Amit K. Ray, Samit K. Das, Samaresh
Get PDFHere, we report the observation of negative photoconductance (NPC) effect in highly arsenic-doped germanium nanowires (Ge NWs) for the infrared light. NPC was studied by light-assisted Kelvin probe force microscopy, which shows the depletion of carriers in n-Ge NWs in the presence of infrared light. The trapping of photocarriers leads to high recombination of carriers in the presence of light, which is dominant in the n-type devices. Furthermore, a carrier trapping model was used to investigate the trapping and detrapping phenomena and it was observed that the NPC in n-Ge occurred, because of the fast trapping of mobile charge carriers by interfacial states. The performance of n-type devices was compared with p-type NW detectors, which shows the conventional positive photoconductive behavior with high gain of 104. The observed results can be used to study the application of Ge NWs for various optoelectronic applications involving light tunable memory device applications
Towards a casteless society / Swapan K. Biswas
No full text1st edIncludes bibliographical references (p. 88-89
10.1177_1757913919834584_Supplementary_material_appendix – Supplemental material for NHS Health Check and healthy lifestyle in Leicester, England: analysis of a survey dataset
No full textSupplemental material, 10.1177_1757913919834584_Supplementary_material_appendix for NHS Health Check and healthy lifestyle in Leicester, England: analysis of a survey dataset by K Chattopadhyay, M Biswas and R Moore in Perspectives in Public Health</p
Appendix_LHWS_Relevant_Questions_Dec_2018 – Supplemental material for NHS Health Check and healthy lifestyle in Leicester, England: analysis of a survey dataset
No full textSupplemental material, Appendix_LHWS_Relevant_Questions_Dec_2018 for NHS Health Check and healthy lifestyle in Leicester, England: analysis of a survey dataset by K Chattopadhyay, M Biswas and R Moore in Perspectives in Public Health</p
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