4,379 research outputs found
Foot Bench Shears
No full textPatent for foot-operated shears for cuttings bands on bales or general shearing, including illustrations
Discussion of “Comparison of Base Shears Estimated from Floor Accelerations and Column Shears”
No full textIn lieu of a provided abstract, the first paragraph is provided:
The author agrees with Dr. Pinho about difficulties associated with the use of different damping models in nonlinear dynamic analysis. However, the focus of the original manuscript was to illustrate the difference between base shear estimated from floor accelerations, denoted as inertial base shear, and base shear estimated from column shears, denoted as the structural base shear. The difference between the two base shears exists regardless of the damping model used in the nonlinear analysis. In order to illustrate this conclusion, the Los Angeles building of the original manuscript (Goel 2011) was re-analyzed for Earthquake No. 15 using two different Rayleigh damping models: C = α0m + α1kinitial, in which the stiffness-proportional component is proportional to the initial elastic stiffness, kinitial, and C = α0m + α1kcurrent, in which the stiffness-proportional component is proportional to the current stiffness, kcurrent
Prolapse and sexual function 8 years after neovagina according to Shears: a study of 43 cases with Mayer-von Rokitansky-Küster-Hauser syndrome
No full textTo investigate sexual and anatomical outcome after Shears neovagina in patients with Mayer-von Rokitansky-Kuster-Hauser syndrome (MRKH)
“Don Juan in the Ottoman East: Dis/continuities in Cantos V-VIII”
No full textAs with the English cantos, those set in Constantinople and Ismail constitute a discrete narrative sequence within Don Juan, one whose apparently seamless plot progression is criss-crossed by continuities and discontinuities in relation to the poem’s previous instalments. Discontinuities particularly concern the position of these cantos in the poem’s compositional history during the fraught period of 1821-22, as well as a representation of the Ottoman East which knowingly reprises and relentlessly subverts familiar orientalist topoi. In keeping with Don Juan’s pervasive medley mode, cantos V-VIII are built on an interplay of dis/continuities forcing readers uninterruptedly to identify and decode multiple, ever-varying lines of argument about excess, consumption, eroticism and war, and held together by a central thread of reflections on power. Investigating the thematic and structural peculiarities of this section of Don Juan, this chapter suggests that we read it as a unit within the poem, which consistently engages questions of authority and control through a distinctive interweaving of figurative protocols, historical-ideological materials, and metaliterary references
Relativistic mean field description for the shears band mechanism in Rb-84
No full textFor the first time, the relativistic mean field (RMF) model is applied to the shears band recently observed in Rb-84(37). Signals of the appearance of the shears mechanism, such as smooth decreases of the shears angle and of the B(M1)/B(E2) ratio while keeping the nearly constant tilt angle, are well reproduced. Thus it is shown that the microscopic RMF model can nicely describe the shears band in this nucleus.Physics, NuclearSCI(E)72ARTICLE6null6
Simulations of large winds and wind shears induced by gravity wave breaking in the mesosphere and lower thermosphere (MLT) region
No full textUsing a fully nonlinear two-dimensional (2-D) numerical model, we simulated
gravity waves (GWs) breaking and their contributions to the formation of
large winds and wind shears in the mesosphere and lower thermosphere (MLT).
An eddy diffusion coefficient is used in the 2-D numerical model to
parameterize realistic turbulent mixing. Our study shows that the momentum
deposited by breaking GWs accelerates the mean wind. The resultant large
background wind increases the GW's apparent horizontal phase velocity and
decreases the GW's intrinsic frequency and vertical wavelength. Both the
accelerated mean wind and the decreased GW vertical wavelength contribute to
the enhancement of wind shears. This, in turn, creates a background condition
that favors the occurrence of GW instability, breaking, and momentum
deposition, as well as mean wind acceleration, which further enhances the
wind shears. We find that GWs with longer vertical wavelengths and faster
horizontal phase velocity can induce larger winds, but they may not
necessarily induce larger wind shears. In addition, the background
temperature can affect the time and height of GW breaking, thus causing
accelerated mean winds and wind shears
Shears band with a large dynamic moment of inertia in
No full textHigh-spin states in 197Bi were studied with the AFRODITE γ-ray array at iThemba LABS using the 181Ta( 22Ne, 6n) reaction at a beam energy of 125 MeV. A new shears band was found and linked to the low-lying states in 197Bi. Its dynamic moment of inertia, , is considerably larger than the of the shears bands in the neighbouring Pb isotopes. This is probably a result of the involvement of an additional high-K
h
9/2 proton orbital
Design and synthesis of chemical probes for the protein kinase B PH domain
No full textPhosphatidyl D-myo-inositol (3,4,5)-trisphosphate [PtdIns(3,4,5)P3] contributes to the activation of protein kinase B (PKB) by interacting with the PKB PH domain. PKB is known to be up-regulated in several cancer cell types. Compounds that can display selective inhibition of this kinase have promising chemotherapeutic potential, and inhibition of the PH domain of PKB represents a realistic means by which to achieve this. Analysis of the X-ray crystal structures of apo PKBαPH and PKBαPH bound to D-myo-inositol 1,3,4,5-tetrakisphosphate [InsP4, the inositol head group of PtdIns(3,4,5)P3] led to the design of PtdIns(3,4,5)P3 and InsP4 analogues as potential PKB PH domain inhibitors. The synthesis of PtdIns(3,4,5)P3 analogues modified at the C-4 position was investigated, but it was discovered that such compounds were prone to migration of the 1-position phosphate. Subsequently, a range of racemic InsP4 analogues, modified at the C-1 or C-4 position, were successfully synthesised. Advanced progress has also been made towards the synthesis of enantiomerically pure analogues of InsP4
Possible shears bands in At204 and Fr206, and identification of excited states in Fr205,207
No full textNeutron-deficient astatine and francium nuclei were produced in the reaction 30Si+181Ta→211Fr* at 152 MeV. The evaporation residues from this very fissile system were selected with the HERCULES-II detector system and residue-gated γ rays were measured with Gammasphere. Excited states were observed for the first time in Fr205,207, as well as sequences of low-energy transitions between high-spin states in At204 and Fr206. These latter structures have properties similar to those associated with magnetic rotation (shears bands) in lead nuclei. Comparisons with established shears bands are presented and prospects for the magnetic-rotation phenomenon near the predicted N=120 "magic" number are explored
Harmonic long shears further reduce operation time in transanal endoscopic microsurgery
No full textBackground: Previous research indicates that application of 5-mm harmonic shears rather than diathermia significantly reduces operation time in transanal endoscopic microsurgery (TEM). Frequently, however, additional instruments were required to complete resection. We investigated whether the new 5-mm harmonic long shears (H-LS) are better equipped for TEM compared with regular harmonic shears (HS). Methods: Between 2001 and 2006, 162 tumors (117 adenomas, 42 carcinomas, and 3 other tumors; mean distance 6.6 cm, mean area 40 cm2) were excised in 161 patients (82 men, 79 women; mean age 66 years). Results: Eighty-eight resections were performed with HS and 74 with H-LS. Tumor and patient characteristics were similar except for specimen area. Tumors resected by H-LS were on average smaller than those resected by HS (34.4 versus 44.1 cm2; Mann-Whitney U-test: p = 0.027). Mean operation time was 48 min and proportional to area in both groups (univariate analysis of variance p<0.001). Mean operation time was 54 min using HS and 41 min using H-LS (t-test: p<0.001). After correction for area, operation time for H-LS was reduced by 14% compared with HS (t-test: p<0.001). H-LS is singly capable of completing resection in 88% compared with 26% for HS (Mann- Whitney U-test: p<0.001). Mean blood loss was 16 cc for HS and 3 cc for H-LS (p<0.001). Morbidity (11%) and mortality (0.6%) were not different between the two groups (Fisher's exact test). Conclusion: Performing transanal endoscopic microsurgery with 5-mm harmonic long shears reduces operation time compared with regular shears, and completing resection seldom requires other instruments
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