63,081 research outputs found
Alluaudomyia finitima Sinha & Mazumdar & Chaudhuri 2005, n. sp.
No full textAlluaudomyia finitima n. sp. (Fig. 2) TYPE MATERIAL. — Holotype: West Bengal, Haldia, 11.III.1990, S. Sinha coll., (NZC). Paratypes: West Bengal, Nandigram, 12.VIII.1990, A. K. Sinha coll., 1 spec. (MNHN); West Bengal, Juneput, 18.VIII.1993, S. Das coll., 25 specs are retained with the junior authors. ETYMOLOGY. — “ Finitima ” means nearer to A. typica. DESCRIPTION FemalePublished as part of Sinha, Saswati, Mazumdar, Abhijit & Chaudhuri, Prasanta K., 2005, New species of predaceous midges of the genus Alluaudomyia Kieffer, 1913 (Insecta, Diptera, Ceratopogonidae) from the coastal region of West Bengal, India, pp. 115-122 in Zoosystema 27 (1) on page 118, DOI: 10.5281/zenodo.539609
Quantum stop times
Get PDFThe notion of stop-time can be naturally translated in a
quantum probabilistic framework and this problem has been
studied by several authors [1], [2], [3], [4], [5].
Recently Parthasarathy and Sinha [4] have established a
factorization property of the -space over the Wiener space
(regarded as the Fock space over )
based on the notion of quantum stop time which is a quantum
probabilistic analogue of the strong Markov property. In this
note we prove a stronger result which has no classical
analogue namely that the algebra generated by the stopped Weyl
operators in the sense of [4] (i.e.the past algebra with
respect to a stop time S), is the algebra of all the bounded
operators on of the Wiener space
Raw dataset of tensile engineering stress-strain from advanced polymer architecture fluoroelastomer test inflatable seals, produced by cold feed extrusion and continuous cure and aimed at Gen IV Sodium-cooled Fast Reactor technology
No full textThe raw dataset of tensile engineering stress strain was obtained by stretching (50 mm/ min) ASTM Die C dumb-bell specimens (till failure) in a Hounsfield UTM (H10KS) at ambient and elevated (120 Degree Celsius/ hot) temperatures. The specimens from 2 defective test inflatable seals (Seals), 3 per Seal Quadrant (per measuring temperature), were stretched after environmental conditioning and without stress softening. The fluorohydrocarbon rubber (FKM) Seals, belonging to the 500 MW(e) sodium cooled Prototype Fast Breeder Reactor design and produced by cold feed extrusion (and continuous cure), were rejected (manufacture: 2007) due to several quality issues. Tensile tests in the UTM after standard-Seal-storage, as part of broader experimental design (2017- 2019), were aimed at a quality consistency in consonance with the Gen IV Sodium-cooled Fast Reactor technology. For that purpose, specimen- preparation (from the Seals) had to ensure that signature of improper production on the Seal compound (APA-1, 2007) is identifiable by the tests. APA-1 2007, made of advanced polymer architecture (APA), is a blend compound (50 : 50) of peroxide cured Viton GBL 200S : 600S. The raw dataset, containing the signature (residual stress, substantially lower hot tensile strength) of improper production, corresponds to stress-strain curves in a related research article viz., N. K. Sinha, S. Chattopadhyay, 2022. A case study on elimination of premature failure sources from manufacture of fluoroelastomer inflatable seals for sodium cooled fast reactor towards sustainability. Eng Fail Anal. 134, 106039. https://doi.org/10.1016/j.engfailanal.2022.106039.The related research article showed that the signature (Seal defect) is traceable to defect source i.e., improper cure index of APA-1, 2007. The source propagated from macromolecular to macroscopic domain (i.e. defect) through the routes of premature inception of cure (in APA-1, 2007) and undercure (of APA-1, 2007) during the improper production.The 46 sets of tensile engineering stress-strain (23 per Seal) containing the processing signature are structured across 3 Levels using 7 folders i.e., L-1: RAW_ESS_SEALS, L-2: R_ESS_SEAL-1, L-2: R_ESS_SEAL-2, L-3: R_ESS_SEAL-1-RT, R_ESS_SEAL-1-120, L-3: R_ESS_SEAL-2-RT and R_ESS_SEAL-2-120. Each of the 4 L-3 folders contains 2 PDF files or Tables. Each Table contains data from two Quadrants (6 specimens ideally). The raw dataset was obtained by rounding UTM raw data to a precision of two digits after decimal.The raw dataset carries significant reuse potential (sizing-optimisation-design) for development of APA-FKM/ rubber components by finite element analysis (FEA). Other reuse potential includes modelling-simulation-validation (of defect, manufacture) by residual stress and significantly lower hot tensile strength in the raw dataset using molecular dynamics-Monte Carlo method-FEA. Identification/ development of constitutive relation is common (related research article)
X-ray scattering with partial coherent radiation: The exact relationship between “resolution” and “coherence”
No full textElucidating the microscopic origin of observed anti-correlation between the protein-protein and protein-water interaction energies
No full textWater as a solvent plays an important role in dictating the structure and dynamics of the large biomolecules like proteins. It has been proposed that the protein dynamics and energetics are closely coupled to the water molecules in the hydration shell. In particular, it has been shown earlier that the fluctuations in intra-protein (protein-protein) interaction energy is strongly anti-correlated with the protein-water interaction energy (solvation energy). Moreover, the dynamical signatures of water gets reflected into the protein dynamics in terms of a dominant power law behavior. In this work, we have carried out systematic molecular dynamics (MD) simulations of three different protein systems to understand the key physical factors that contribute to such anti-correlations. First, we compare the dynamics in globular folded proteins like Lysozyme with intrinsically disordered peptides (IDPs) like Amyloid beta to show that enhanced conformational fluctuations lead to significantly stronger anti-correlation. Trp-cage miniprotein shows a similar behavior distributed over two sub-ensembles of folded and unfolded states. We also investigate what type of interactions and molecular processes are responsible for the observed anti-correlation. In particular, we observe that the extent of correlation decreases significantly in the order of charged, polar and non-polar amino acid residues. Charged residues that form salt bridge interactions show a dominant anti-correlation. Surprisingly, a few non-polar (hydrophobic and buried) residues demonstrate significant anti-correlation as well. We attribute this to the structural fluctuations that lead to an equilibrium between buried and solvent exposed states of these residues, where the protein-protein and protein-water interactions compensate each other. Our studies indicate that the molecular origin of the observed anti-correlation can be vary depending on the type of the interaction. The overall coupling/correlation is dominated by the electrostatic interactions and charged residues due to a general dielectric screening effect, whereas a few buried hydrophobic residues may also show such coupling due to structural dynamics between buried and exposed states
Fabrication of Gd films by vacuum evaporation and its magnetocaloric properties
No full textWe report the fabrication of Gd films with dimples on the surface by vacuum evaporation method on Hastelloy substrate. The Gd films are structurally and morphologically studied by x-ray diffraction and field emission scanning electron microscope respectively and found to be hexagonal crystal structure. The magnetocaloric properties are studied and found to be well comparable with commercial Gd sheet. The calculated magnetic entropy change in Gd films is 9.57 J/kg K at Curie temperature (T-C) of 294 K with second order magnetic phase transition under applied magnetic field 5 T
Branching fraction and CP asymmetry of the decays B+→K0Sπ+ and B+→K0SK+
Get PDFAn analysis of B+ → K0
Sπ+ and B+ → K0
S K+ decays is performed with the LHCb experiment. The pp
collision data used correspond to integrated luminosities of 1 fb−1 and 2 fb−1 collected at centre-ofmass
energies of
√
s = 7 TeV and
√
s = 8 TeV, respectively. The ratio of branching fractions and the
direct CP asymmetries are measured to be B(B+ → K0
S K+
)/B(B+ → K0
Sπ+
) = 0.064 ± 0.009 (stat.) ±
0.004 (syst.), ACP(B+ → K0
Sπ+
) = −0.022 ± 0.025 (stat.) ± 0.010 (syst.) and ACP(B+ → K0
S K+
) =
−0.21 ± 0.14 (stat.) ± 0.01 (syst.). The data sample taken at
√
s = 7 TeV is used to search for
B+
c
→ K0
S K+ decays and results in the upper limit ( fc · B(B+
c
→ K0
S K+
))/( fu · B(B+ → K0
Sπ+
)) <
5.8 × 10−2 at 90% confidence level, where fc and fu denote the hadronisation fractions of a ¯b
quark
into a B+
c or a B+ meson, respectively
Variability In The Ecoraces Of Tropical Tasar Sillkworm Antheraea Mylitta Drury
Get PDFTropical tasar silkworm, Antheraea mylitta Drury is exploited in countries for commercial silk production and improved varieties of these silkworms can be evolved by employing various breeding techniques. As the insect has established itself in various forms of ecological populations (Commonly called as ecoraces) in different geographical niches of the country depending on food plants and micro-environmental conditions available to them, the species exists in the form of nearly 44 ecoraces (Singh and Srivastava,1997, Srivastava,2002 and Srivastava et at. 2007) distributed over different states. However, due to free interbreeding in nature for centuries, the fauna is highly heterogeneous.

Tasar culture is a forest based industry being practiced as tradition, since time immemorial by the tribes of Central India, extending from West Bengal in the East to Karnataka in South. The species A. mylitta D. is polyphagous in nature. The present study comprises the ecoraces of tropical tasar silkworm of A. mylitta D. These ecoraces are mainly restricted in the tropical moist deciduous forest area where the average rainfall varies between 1200-2000 mm and the deciduous zone of the dry tropical forest area where the average rainfall has been observed to be about 1000 mm. The Primary food plants of the insects are Terminalia tomentosa, Terminalia arjuna and Shorea robusta and secondary food plants are Terminalia chebula, T. bellerica, T. peniculata, Zizyphus jujuba etc. The phenotypic and genotypic variability is very much prominent. The present review paper comprises the extent and degree of natural variation in tropical tasar silkworm A. mylitta D
Depolarization and decreased surface expression of K+ channels contribute to NSAID-inhibition of intestinal restitution
No full textNon-steroidal anti-inflammatory drugs (NSAIDs) contribute to gastrointestinal ulcer formation by inhibiting epithelial cell migration and mucosal restitution; however, the drug-affected signaling pathways are poorly defined. We investigated whether NSAID inhibition of intestinal epithelial migration is associated with depletion of intracellular polyamines, depolarization of membrane potential (Em) and altered surface expression of K+ channels. Epithelial cell migration in response to the wounding of confluent IEC-6 and IEC-Cdx2 monolayers was reduced by indomethacin (100μM), phenylbutazone (100μM) and NS-398 (100μM) but not by SC-560 (1μM). NSAID-inhibition of intestinal cell migration was not associated with depletion of intracellular polyamines. Treatment of IEC-6 and IEC-Cdx2 cells with indomethacin, phenylbutazone and NS-398 induced significant depolarization of Em, whereas treatment with SC-560 had no effect on Em. The Em of IEC-Cdx2 cells was: −38.5±1.8mV under control conditions; −35.9±1.6mV after treatment with SC-560; −18.8±1.2mV after treatment with indomethacin; and −23.7±1.4mV after treatment with NS-398. Whereas SC-560 had no significant effects on the total cellular expression of Kv1.4 channel protein, indomethacin and NS-398 decreased not only the total cellular expression of Kv1.4, but also the cell surface expression of both Kv1.4 and Kv1.6 channel subunits in IEC-Cdx2. Both Kv1.4 and Kv1.6 channel proteins were immunoprecipitated by Kv1.4 antibody from IEC-Cdx2 lysates, indicating that these subunits co-assemble to form heteromeric Kv channels. These results suggest that NSAID inhibition of epithelial cell migration is independent of polyamine-depletion, and is associated with depolarization of Em and decreased surface expression of heteromeric Kv1 channels.ID: S0006295207001931; M3: Article; Accession Number: S0006295207001931; Author: L.C. Freeman (b); Author: D.F. Narvaez (a); Author: A. McCoy (a); Author: F.B. von Stein (c); Author: S. Young (b); Author: K. Silver (a); Author: S. Ganta (b); Author: D. Koch (b); Author: R. Hunter (b); Author: R.F. Gilmour (c); Author: J.D. Lillich (a, ⁎); Affiliation: Department of Clinical Sciences, Kansas State University, Manhattan, KS 66506, United States; Affiliation: Department of Anatomy and Physiology, Kansas State University, Manhattan, KS 66506, United States; Affiliation: Department of Biomedical Sciences, Cornell University, Ithaca, NY 14853, United States; Keyword: Non-steroidal anti-inflammatory drugs; Keyword: Intestinal epithelial cells; Keyword: Membrane potential; Keyword: Potassium channels; Number of Pages: 12; Language: English;Source type: Electronic(1)http://search.ebscohost.com/login.aspx?direct=true&db=edselp&AN=S0006295207001931&site=eds-live&scope=sit
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