109,327 research outputs found
Sphingius paltaensis Biswas & Biswas 1992
No full textSphingius paltaensis Biswas & Biswas, 1992 Fig. 7 Sphingius paltaensis Biswas & Biswas, 1992: 426, figs 36–38. Type material. Holotype ♀ from INDIA: West Bengal: North 24 Parganas: Palta: Santi Nagar (22°46’57.51’’N, 88°22’50.46’’E), 12 m a.s.l., leg. Bijan Biswas, 8 December 1986, deposited in NZC-ZSI (5046/18), examined (Fig. 7E). Diagnosis. Females of S. paltaensis are closely related to the females of S. spinosus Dankittipakul, Tavano & Singtripop, 2011, but can be separated by circular atrium (quadrangular in S. spinosus) and sharply curved copulatory ducts (gently curved in S. spinosus) (compare Fig. 7 C–D with Dankittipakul et al. 2011: figs 25–26). Supplementary description. Female (Fig. 7 A–B). Body length 6.46. Carapace length 2.76, width 2.30. Opisthosoma length 3.70, width 2.00. Eye diameters: ALE 0.14. AME 0.10. PLE 0.11. PME 0.15. Eye interdistances: ALE–PLE 0.07. AME–ALE 0.04. AME–AME 0.06. AME–PME 0.08. PME–PLE 0.06. PME–PME 0.07. Chelicerae length 0.96. Clypeus height at ALEs 0.07, at AMEs 0.13. Measurements of palp and legs. Palp 3.00 [0.93, 0.58, 0.59, 0.90], I 8.38 [2.38, 1.23, 1.90, 1.48, 1.39], II 6.52 [1.72, 0.87, 1.39, 1.36, 1.18], III 6.17 [1.66, 0.93, 1.18, 1.39, 1.01], IV 9.17 [2.74, 1.19, 1.96, 2.41, 0.87]. Leg formula: 4123. Genitalia (Fig. 7 C–D, F): epigynal plate moderately sclerotized. Atrium large, nearly circular, with wide anterior hood (Fig. 7C). Copulatory openings situated on postero-lateral margin of epigynal atrium. Copulatory ducts short, curving medially (Fig. 7D). Bursae globular, with indistinct stalks, arising on distal part of copulatory ducts (Fig. 7D). Spermathecae large, more or less pear-shaped, lying parallel to each other (Fig. 7D). Fertilization ducts more or less linear-shaped, directed mesally towards each other (Fig. 7D). Male. Unknown. Remarks. The ZSI collection has one glass bottle for this species labelled as ‘holotype’ (5046/18) containing a female specimen with broken legs, otherwise in good condition. The same bottle has a small glass vial containing the dissected genitalia. There is an inconsistency in the registration number of this species; the label mentions it as ‘5406/18’, but in the original literature, it is given as ‘5046/18’.Published as part of Sankaran, Pradeep M., Caleb, John T. D. & Sebastian, Pothalil A., 2020, A review of the genus Sphingius Thorell, 1890 from India (Araneae: Liocranidae), pp. 505-522 in Zootaxa 4896 (4) on pages 514-515, DOI: 10.11646/zootaxa.4896.4.3, http://zenodo.org/record/438767
A low-complexity ECG feature extraction algorithm for mobile healthcare applications
No full textThis 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
Aspects de la "désertification" : Biswas (M.), Biswas (A.), editors, Desertification. Environmental Sc. and Applications
No full textTricart Jean. Aspects de la "désertification" : Biswas (M.), Biswas (A.), editors, Desertification. Environmental Sc. and Applications. In: Annales de Géographie, t. 94, n°522, 1985. pp. 194-204
Environmental toxicity, redox signaling and lung inflammation:the role of glutathione
No full textGlutathione (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
Maculabatis Haque & White & Cavanagh & Biswas & Hossain 2021
No full textGenus Maculabatis The new genus Maculabatis, as well as several new species, was recently assigned to a group of morphologically similar stingray species (Last et al. 2016c; Manjaji-Matsumoto & Last 2016). The recently described Maculabatis bineeshi was recorded in Bangladesh for the first time in this study (Figure 3), with a total of 21 specimens recorded, both morphologically (Manjaji-Matsumoto & Last 2016) and genetically. M. arabica (Figure 4) was genetically identified from one specimen and morphologically identified from another 18 specimens. In addition, seven specimens that were morphologically most consistent with M. macrura were examined. M. macrura has only recently been established as a valid species, and is morphologically very similar to M. gerrardi (Last et al. 2016a), with distinguishing characteristics poorly understood. Further genetic studies are therefore recommended to assign these specimens to the correct species.Published as part of Haque, Alifa Bintha, White, William T., Cavanagh, Rachel D., Biswas, Aparna Riti & Hossain, Nazia, 2021, New records of elasmobranchs in the Bay of Bengal, Bangladesh: further taxonomic research is essential, pp. 211-230 in Zootaxa 5027 (2) on page 217, DOI: 10.11646/zootaxa.5027.2.4, http://zenodo.org/record/544823
Letter, [Author unclear] to Paulina T. Merritt
No full textHandwritten letter to Paulina Merritt from an unknown author, October 1, 1876.
Tetra-t-butyl magnesium phthalocyanine on gold: Electronic structure and molecular orientation
No full textAN ECONOMIC INTERPRETATION OF IMPACT OF PHENOLOGICALLY TIMED IRRIGATION ON CORN YIELD
No full textAn economic production function was derived in an analysis of water application to corn by phonological time periods. The quantities of use of water by growth periods as delineated by physical stages were tested for influence on final output of dry matter and grain. Several yearsÂ’ data for three locations were utilized. The results tend to confirm the conceptual models and previous work in this type of analysis. Certain periods of growth were more critical than others.Crop Production/Industries,
Holomorphic Cartan geometry on manifolds with numerically effective tangent bundle
No full textAbstractLet X be a compact connected Kähler manifold such that the holomorphic tangent bundle TX is numerically effective. A theorem of Demailly et al. (1994) [11] says that there is a finite unramified Galois covering M→X, a complex torus T, and a holomorphic surjective submersion f:M→T, such that the fibers of f are Fano manifolds with numerically effective tangent bundle. A conjecture of Campana and Peternell says that the fibers of f are rational and homogeneous. Assume that X admits a holomorphic Cartan geometry. We prove that the fibers of f are rational homogeneous varieties. We also prove that the holomorphic principal G-bundle over T given by f, where G is the group of all holomorphic automorphisms of a fiber, admits a flat holomorphic connection
Handwritten biographical information on Paulina T. McClung Merritt
No full textA handwritten biography of Paulina T. McClung Merritt by an unknown author, 1892.
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