Computation of the Grothendieck-Witt ring of nonsingular Hermitian forms with positioning map

The generalized Grothendieck-Witt ring of nonsingular Hermitian forms with positioning map is the cartesian product of the ordinary Grothendieck-Witt ring of nonsingular Hermitian forms and a map ring. We study the generalized Grothendieck-Witt ring by computing the map ring

Role of Λ(1670)\Lambda(1670) in the γp→K+ηΛ\gamma p \to K^+ \eta \Lambda reaction near threshold

The role of the $\Lambda(1670)$ resonance in the $\gamma p \to K^+ \eta \Lambda$ reaction near threshold is studied within an effective Lagrangian approach. We perform a calculation for the total and differential cross section of the $\gamma p \to K^+ \eta \Lambda$ reaction by including the contributions from the $\Lambda(1670)$ intermediate state decaying into $\eta \Lambda$ dominated by $K^-$ and $K^{*-}$ mesons exchanges, the nucleon pole and $N^*(1535)$ resonance decaying into $K^+ \Lambda$ dominated by exchanges of $\omega$ and $K^-$ mesons. Besides, the non-resonance process and contact terms to keep the total scattering amplitude gauge invariant are also considered. With our model parameters, the total cross section of this reaction is of the order of $1$ nanobarn at photon beam energy $E_{\gamma} \sim 2.5$ GeV. It is expected that our model predictions could be tested by future experiments.Comment: Published versio

Noise in Genotype Selection Model

We study the steady state properties of a genotype selection model in presence of correlated Gaussian white noise. The effect of the noise on the genotype selection model is discussed. It is found that correlated noise can break the balance of gene selection and induce the phase transition which can makes us select one type gene haploid from a gene group.Comment: 8 pages, 4 figure

Characterisation And Performance Of Sno2 Film For Detection Of Volatile Organic Compounds Synthesised By Chemical Vapour Deposition Method

SnO2 films were successfully coated on alumina substrate by using tetramethyltin (TMT) as the precursor via chemical vapour deposition (CVD) technique, to be used as chemical sensor. Characterisation of the films was performed by using X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDX) and field emission scanning electron microscope (FESEM). The sensor was optimised by varying parameters such as coating temperature (400 oC - 500 oC), coating time (30 min - 90 min) and annealing temperature (450 oC - 550 oC). The optimum coating condition was achieved at coating temperature of 450 oC and coating time of 60 min without annealing with highest sensitivity of 25.02 towards 500 ppm of ethanol vapour. It was also found that film thickness increased linearly from 0.31 μm to 16.77 μm as the coating time increased from 30 min to 90 min. Meanwhile, annealing temperature of 450 oC to 550 oC did not improve the sensitivity when compared to the sensitivity of the film without annealing. Instead, an increase of annealing temperature lowered the sensor sensitivity. The results also showed that response time decreased with increasing ethanol concentration meanwhile the recovery time increased with increasing ethanol concentration. The optimised sensor also responded to other volatile organic compounds (VOCs) such as acetone and methanol vapour

N-(1-Acetyl-5-benzoyl-1,4,5,6-tetra­hydro­pyrrolo­[3,4-c]pyrazol-3-yl)benzamide

In the mol­ecule of the title compound, C21H18N4O3, the fused pyrrolo­[3,4-c]pyrazole ring system is approximately planar [maximum deviation = 0.0486 (16) Å] and forms dihedral angles of 87.21 (8) and 35.46 (7)° with the phenyl rings. In the crystal, N—H⋯O and C—H⋯O hydrogen bonds and weak C—H⋯π inter­actions link the mol­ecules into chains parallel to [201]

Current Reversals in a inhomogeneous system with asymmetric unbiased fluctuations

We present a study of transport of a Brownian particle moving in periodic symmetric potential in the presence of asymmetric unbiased fluctuations. The particle is considered to move in a medium with periodic space dependent friction. By tuning the parameters of the system, the direction of current exhibit reversals, both as a function of temperature as well as the amplitude of rocking force. We found that the mutual interplay between the opposite driving factors is the necessary term for current reversals.Comment: 9 pages, 7 figure

Evaluation of post hysterectomy vaginal cuff related complications and their management after different modes of hysterectomy

Background: Aim: To update the incidence of vaginal cuff related complications after different modes of hysterectomy and their management.Methods: The study was conducted in Jingzhou central hospital, Jingzhou, Hubei, China. Patient’s case files were reviewed who had undergone Hysterectomy from 1st Jan. 2013 - 31st Dec. 2014. The incidence of vaginal cuff related complications were retrospectively evaluated by different approaches. Data were collected according to our inclusion criteria and statistically analyzed its significance (P <0.05).Results: 887 patients underwent hysterectomy during 2 years of study period. Mean age was 54 ± 4 years. Overall incidence of vaginal cuff related complications were 34 (3.83%) which included vaginal cuff bleeding 12 (1.35%), vaginal cuff infections 16 (1.80%) and vaginal cuff dehiscence 6 (0.67%) without evisceration. Laparoscopic hysterectomy had higher incidence (6.12%), than open abdominal (2.56%) and vaginal (3.22%) hysterectomy. Incidences were significant (P = 0.032) to approaches of hysterectomy. The Incidence of vaginal cuff dehiscence between Laparoscopic and Open abdominal hysterectomy were significant (P = 0.015) but the incidence of vaginal cuff bleeding (P = 0.90) and vaginal cuff infection (P = 0.74) were not significant. Over all incidences were higher in malignancy (61%) than benign (20%).Conclusions: Study suggests that vaginal cuff bleeding, cuff infection, cuff dehiscence and evisceration are rare but not negligible which may lead into catastrophic conditions. Early diagnosis and appropriate management reduces further complications. Partial cuff dehiscence can be managed conservatively without surgical repair with satisfactory outcome

Compositor: Bottom-up Clustering and Compositing for Robust Part and Object Segmentation

In this work, we present a robust approach for joint part and object segmentation. Specifically, we reformulate object and part segmentation as an optimization problem and build a hierarchical feature representation including pixel, part, and object-level embeddings to solve it in a bottom-up clustering manner. Pixels are grouped into several clusters where the part-level embeddings serve as cluster centers. Afterwards, object masks are obtained by compositing the part proposals. This bottom-up interaction is shown to be effective in integrating information from lower semantic levels to higher semantic levels. Based on that, our novel approach Compositor produces part and object segmentation masks simultaneously while improving the mask quality. Compositor achieves state-of-the-art performance on PartImageNet and Pascal-Part by outperforming previous methods by around 0.9% and 1.3% on PartImageNet, 0.4% and 1.7% on Pascal-Part in terms of part and object mIoU and demonstrates better robustness against occlusion by around 4.4% and 7.1% on part and object respectively. Code will be available at https://github.com/TACJu/Compositor

3-(5-Chloro­naphthalene-1-sulfonamido)-2-(2-hy­droxy­eth­yl)-4,5,6,7-tetra­hydro-2H-pyrazolo­[4,3-c]pyridin-5-ium chloride

In the cation of the title compound, C18H20ClN4O3S+·Cl−, the tetra­hydro­pyridinium ring assumes a half-chair conformation. The dihedral angle between the pyrazole ring and the naphthalene ring system is 75.19 (6)°. In the crystal, ions are linked into a three-dimensional network by N—H⋯O, N—H⋯Cl and O—H⋯Cl hydrogen bonds and weak π–π stacking inter­actions with centroid–centroid distances of 3.608 (2) Å