QQˉQ\bar Q (Q∈{b,c}Q\in \{b, c\}) spectroscopy using Cornell potential

The mass spectra and decay properties of heavy quarkonia are computed in nonrelativistic quark-antiquark Cornell potential model. We have employed the numerical solution of Schr\"odinger equation to obtain their mass spectra using only four parameters namely quark mass ($m_c$, $m_b$) and confinement strength ($A_{c\bar c}$, $A_{b\bar b}$). The spin hyperfine, spin-orbit and tensor components of the one gluon exchange interaction are computed perturbatively to determine the mass spectra of excited $S$, $P$, $D$ and $F$ states. Digamma, digluon and dilepton decays of these mesons are computed using the model parameters and numerical wave functions. The predicted spectroscopy and decay properties for quarkonia are found to be consistent with available experimental observations and results from other theoretical models. We also compute mass spectra and life time of the $B_c$ meson without additional parameters. The computed electromagnetic transition widths of heavy quarkonia and $B_c$ mesons are in tune with available experimental data and other theoretical approaches

A survey of some new approaches in maximum age limit and accuracy of luminescence application to archaeological chronometry

This article does not have an abstract

Optical and Near-infrared survey of the stellar contents associated with the star-forming Complex Sh2-252

We present the analyses of the stellar contents associated with the HII region Sh2-252 using UBVRI photometry, slit and slitless spectroscopy along with the NIR data from 2MASS for an area ~1 degree x 1 degree. We studied the sub-regions of Sh2-252 which includes four compact-HII (CHII) regions, namely A, B, C and E and two clusters NGC 2175s and Teutsch 136 (Teu 136). Of the fifteen spectroscopically observed bright stars, eight have been identified as massive members of spectral class earlier than B3. From the spectro-photometric analyses, we derived the average distance of the region as 2.4+/-0.2 kpc and the reddening of the massive members is found to vary between 0.35 to 2.1 mag. We found that NGC 2175s and Teu 136, located towards the eastern edge of the complex are the sub-clusters of Sh2-252. The stellar surface density distribution in K-band shows clustering associated with the regions A, C, E, NGC 2175s and Teu 136. We have also identified the candidate ionizing sources of the CHII regions. 61 H_alpha emission sources are identified using slitless spectroscopy. The distribution of the H_alpha emission sources and candidate YSOs with IR excess on the V/(V-I) CMD shows that a majority of them have approximate ages between 0.1 - 5 Myr and masses in the range of 0.3 - 2.5 M_sun. The CMDs of the candidate YSOs in the individual regions also show an age spread of 0.1 - 5 Myr for each of them. We calculated the KLFs for the sub-regions A, C, E, NGC 2175s and Teu 136. Within errors, the KLFs for all the sub-regions are found to be similar and comparable to that of young clusters of age < 5 Myr. We also estimated the mass functions (MFs) of the PMS sample of the individual regions in the mass range of 0.3 - 2.5 M_sun. In general, the slopes of the MFs of all the sub-regions are found comparable to the Salpeter value.Comment: published in MNRA

Magnetic properties of polypyrrole - coated iron oxide nanoparticles

Iron oxide nanoparticles were prepared by sol -gel process. Insitu polymerization of pyrrole monomer in the presence of oxygen in iron oxide ethanol suspension resulted in a iron oxide - polypyrrole nanocomposite. The structure and magnetic properties were investigated for varying pyrrole concentrations. The presence of the gamma - iron oxide phase and polypyrrole were confirmed by XRD and FTIR respectively. Agglomeration was found to be comparatively much reduced for the coated samples, as shown by TEM. AC susceptibility measurements confirmed the superparamagnetic behaviour. Numerical simulations performed for an interacting model system are performed to estimate the anisotropy and compare favourably with experimental results.Comment: 11 pages,8 figure

Spectrum of clinical and biochemical profile and its importance in diabetic ketoacidosis: a tertiary care hospital experience in Gujarat

Background: Diabetes mellitus (DM) is a disorder of multiple etiologies, and diabetic ketoacidosis (DKA) is one of the life-threatening complications of DM. This study was aimed to study the clinical and biochemical profile of DKA patients. Methods: We conducted this retrospective study at a tertiary care hospital in Gujarat. We included total 100 patients above the age of 18 years having DM, presented with DKA. A detailed history, clinical examination and biochemical tests were carried out: random blood sugar, urinalysis, arterial blood gas analysis, serum ketone, HbA1c, serum creatinine, serum electrolytes- potassium and sodium and serum osmolality. The results were analysed using Microsoft excel. Results: Out of total 100 patients, 76 (76%) patients had type 1 DM and 24 (24%) had type 2 DM, 42 (42%) were in the age group of 18-30 years. The mean age was 39.75±12.14 years. There were 56 (56%) males and 44 (44%) females with male: female ratio of 1.3:1. Most common clinical features of DKA were nausea/vomiting (88%), breathlessness (43%) and fever (35%). The main biochemical parameters altered were blood sugar (&gt;400 mg/dl in 41%) and serum ketones (≥5 in 84%) as well as majority of patients (64%) had their HbA1c level between 11-15% with the mean HbA1c value of 12.25±2.43%. Conclusions: DKA is a frequently observed emergency with high mortality rate. Education regarding symptoms of ketoacidosis, not missing insulin doses especially during illness, strict adherence to treatment and lifestyle modifications can greatly reduce DKA occurrence

Outcome of fracture of intra articular distal femur treated with distal femur locking compression plate

Background: Intra articular fracture of the distal femur is a composite and complex injury that poses various challenges for orthopaedic surgeon starting from management of fracture to a protracted recovery of the patient.Methods: We have done retrospective study of 25 patients with intra articular distal femur fracture operated during the period of 2008 to 2014. NEER score is used as criteria for evaluation of patients.Results: With use of DFLCP, anatomical reduction and rigid fixation, early mobilization and aggressive physiotherapy can be started with the use of these plates.Conclusions: Our study shows that distal femur locking compression plate (DFLCP) is the evolving approach to treat distal femur fractures

The Parallel Persistent Memory Model

We consider a parallel computational model that consists of $P$ processors, each with a fast local ephemeral memory of limited size, and sharing a large persistent memory. The model allows for each processor to fault with bounded probability, and possibly restart. On faulting all processor state and local ephemeral memory are lost, but the persistent memory remains. This model is motivated by upcoming non-volatile memories that are as fast as existing random access memory, are accessible at the granularity of cache lines, and have the capability of surviving power outages. It is further motivated by the observation that in large parallel systems, failure of processors and their caches is not unusual. Within the model we develop a framework for developing locality efficient parallel algorithms that are resilient to failures. There are several challenges, including the need to recover from failures, the desire to do this in an asynchronous setting (i.e., not blocking other processors when one fails), and the need for synchronization primitives that are robust to failures. We describe approaches to solve these challenges based on breaking computations into what we call capsules, which have certain properties, and developing a work-stealing scheduler that functions properly within the context of failures. The scheduler guarantees a time bound of $O(W/P_A + D(P/P_A) \lceil\log_{1/f} W\rceil)$ in expectation, where $W$ and $D$ are the work and depth of the computation (in the absence of failures), $P_A$ is the average number of processors available during the computation, and $f \le 1/2$ is the probability that a capsule fails. Within the model and using the proposed methods, we develop efficient algorithms for parallel sorting and other primitives.Comment: This paper is the full version of a paper at SPAA 2018 with the same nam

Achieving change readiness for health service innovations

Continual innovation to address emerging population needs necessitates health service ongoing redesign and transformation worldwide. Recent examples include service transformations in response to Covid-19, many of which were led and managed by nurses. Ensuring change readiness is central to delivering these transformative changes yet has been identified as a central challenge impacting nurse leaders and managers. Recent evidence indicates that affective commitment to change among healthcare staff may be an important contributor to gaining support for change implementation but understudied in healthcare. A cross-sectional survey study was used to examine the association between affective commitment to change and change readiness among 30 healthcare staff across four projects in one state-wide health system in Australia. Our findings indicate that affective commitment to change; healthcare worker's emotional and personal perception of the value of the proposed change is independently associated with individual and collective change readiness. Given that achieving change readiness is a central goal of change management strategies, this pilot work provides valuable insight to inform the change management practices of nurse leaders and managers

Combined influence of shoot bending and plant growth regulators on morphological traits of Guava cv. Allahabad Safeda

Guava (Psidium guajava L.) is a widely cultivated tropical fruit crop consumed raw and also in the form of processed products. Winters in Punjab show a drop in temperature, which hardens the fruit. Therefore, manipulation of the flowering season is desirable. Hence, the present study aimed to select an adequate combination of plant hormones and branch bending to amplify the quantitative traits in Guava cv. Allahabad Safeda. For combinations, three months for branch bending viz., August, September and October and three plant hormones: Naphthaleneacetic acid, Ethrel, and Gibberellins, with two different concentrations each (NAA@100ppm, NAA@200ppm, Ethrel@200ppm, Ethrel@400ppm, GA3@100ppm, GA3@150ppm were selected. The experimental layout was planned in two two-factor randomized block design (RBD) with twenty-one treatments. In the case of branch bending months, (M1) August branch bending gained ideal values in comparison with (M2) September and (M3) October. Combination of NAA at the rate of 200ppm with August branch bending (T2) gave more pronounced results for almost all vegetative parameters, while amongst plant hormones NAA at 200 ppm (C2) enhanced results for Canopy spread (N-S), canopy spread (E-W), length of internode and days for the emergence of new leaf 0.837m and 0.803m, 14.1cm and 27.33 respectively. Results vividly provide a strong base for selecting a combination of NAA spray at 200ppm concentration and August month for branch bending to uplift morphological traits in guava. Thus, these findings will favour horticulture breeders and farmers in harvesting profitable gains for field parameters by selecting a better combination of PGR and crop regulation measures from the off-season.