Deconfined pseudocriticality in a model spin-1 quantum antiferromagnet

Berry phase interference arguments that underlie the theory of deconfined quantum criticality (DQC) for spin-1/2 antiferromagnets have also been invoked to allow for continuous transitions in spin-1 magnets including a N\'eel to (columnar) valence bond solid (cVBS) transition. We provide a microscopic model realization of this transition on the square lattice consisting of Heisenberg exchange (J_H) and biquadratic exchange (J_B) that favor a N\'eel phase, and a designed Q-term (Q_B) interaction which favors a cVBS through large-scale quantum Monte Carlo (QMC) simulations. For J_H=0, this model is equivalent to the SU(3) JQ model with a N\'eel-cVBS transition that has been argued to be DQC through QMC. Upon turning on J_H which brings down the symmetry to SU(2), we find multiple signatures -- a single critical point, high quality collapse of correlation ratios and order parameters, "U(1)-symmetric" cVBS histograms and lack of double-peak in order parameter histograms for largest sizes studied near the critical point -- that are highly suggestive of a continuous transition scenario. However, Binder analysis finds negative dips that grow sub-extensively that we interpret as these transitions rather being pseudocritical. This along with recent results on spin-1/2 models suggests that deconfined pseudocriticality is the more generic scenario.Comment: 7 pages, 5 figures of main text. 22 pages of supplementar

Advances in organic anode materials for Na-/K-Ion rechargeable batteries

Funding: Faraday Institution (GrantNumber(s): FIRG018).Electrochemical energy storage (EES) devices are gaining ever greater prominence in the quest for global energy security. With increasing applications and widening scope, rechargeable battery technology is gradually finding avenues for more abundant and sustainable systems such as Na‐ion (NIB) and K‐ion batteries (KIB). Development of suitable electrode materials lies at the core of this transition. Organic redox‐active molecules are attractive candidates as negative electrode materials owing to their low redox potentials and the fact that they can be obtained from biomass. Also, the rich structural diversity allows integration into several solid‐state polymeric materials. Research in this domain is increasingly focused on deploying molecular engineering to address specific electrochemical limitations that hamper competition with rival materials. This Minireview aims to summarize the advances in both the electrochemical properties and the materials development of organic anode materials.Publisher PDFPeer reviewe

CORRELATION OF TWO PYRAZOLINE MOIETY IN A SINGLE MOLECULE VIA N-LINKAGE CONTAINING FLUORINE ATOM AS A SUBSTITUENT AND THEIR BIOLOGICAL SIGNIFICANCE

Objective: The aim of the present invention is to synthesize and find out the biological importance of the series of the designed pyrazoline compounds. Methods: A series of 3-[3'-(2â€,4â€-dichloro-5â€-fluorophenyl)-5'-(2â€-furyl)-4', 5'-dihydro-1H-pyrazol-1'-yl]-5-substituted phenyl-2-pyrazolines (2a-j) and 1-Nitroso-3-[3'-(2â€,4â€-dichloro-5â€-fluorophenyl)-5'-(2â€-furyl)-4', 5'-dihydro-1H-pyrazol-1'-yl]-5-substituted phenyl-2-pyrazolines (3a-j) were prepared in moderate yields. The structures of both pyrazoline and N-nitroso pyrazoline derivatives have been characterized on the basis of physical properties of the molecule and satisfactory spectral (IR, 1H NMR) data. The antimicrobial activity of the compounds against some Gram (+) and Gram (–) bacteria is reported. Results: The Moderate yield of the proposed compounds was obtained. Spectral analysis showed the structural confirmation of the synthesized compounds. Some of the compounds showed lower to moderate level of drug-like properties. Conclusion: From the results of spectral data and microbial activity it has been concluded that the compounds were found to exhibit some functional lead properties; hence these compounds are worth to be considered as potential lead molecules for further study

A COMPARATIVE STUDY IN THE DIABETES MELLITUS PATIENTS FOR ORAL MANIFESTATION AT TERTIARY CARE HOSPITAL IN NORTH KARNATAKA

ABSTRACTObjective: Diabetes mellitus is the leading health problem across the world. It is associated with several complications such as retinopathy, neuropathy,oral manifestations, chronic macrovascular and microvascular complications. Our objective is to compare these oral manifestations in controlled anduncontrolled diabetic patients.Methods: A study was conducted on total of 100 diabetic patients. The patients were divided into two groups: Group I (n=50) consists of controlleddiabetic patients and Group II (n=50) consists of uncontrolled diabetic patients. Before, the start of the study proper oral examination was donefor both the groups. Samples were collected and were subjected to microbial examination. Comparison between both the groups was done for oralmanifestations.Results: It showed that uncontrolled diabetic patients had a higher incidence of oral manifestations such as hyposalivation, parotid enlargement,burning sensation of mouth, taste alterations, sialorrhea, dental carries, and microbial lesions than controlled diabetes patients.Conclusion: Uncontrolled diabetic patients had higher risk of oral manifestations than controlled diabetic individuals.Keywords: Diabetes mellitus, Retinopathy, Neuropathy, Oral manifestations, Periodontitis, Hyposalivation

Prevalence of dental caries in first and second permanent molars

Background:This study was conducted to assess the First and Second molar permanent molar caries in school children of Nalgonda district, Andhrapradesh, India.Methods:We have taken total 1800 school going children as study population age between 12-15 years, who lived in the same place since birth and consumed drinking water form single source.Results:The mean of caries in first and second were 0.12 ± 0.36 and 0.36 ± 0.70 respectively and total was 0.49 ± 0.92.Conclusion:The prevalence of Second molar teeth was found higher than First molar teeth and these caries were untreated

Youssef’s syndrome following caesarean section: a rare case with review of literature

Youssef’s syndrome is a rare condition characterized by vesicouterine fistula with cyclic haematuria, amenorrhoea and incontinence of urine. A vesicouterine fistula is an abnormal connection between the uterus and bladder that most commonly occur due to inadvertent injury to the bladder during lower segment caesarean section. Vesicouterine fistula leads to psychological and has the negative impact on quality of life. A high suspicion should be kept in mind if the patient presents with urinary incontinence even many years after caesarean section. However, conservative management may be appropriate in some cases, but the definitive mode of management is surgery. Hereby authors present a 22-year-old para 2 live 2 (previous 2 caesarean section) with vesicouterine fistula with the complaint of urinary incontinence, cyclical haematuria (menouria) and amenorrhoea a year after caesarean section done due to obstructed labour.

Procalcitonin decrease over 72 hours in US critical care units predicts fatal outcome in sepsis patients

Introduction: Close monitoring and repeated risk assessment of sepsis patients in the intensive care unit (ICU) is important for decisions regarding care intensification or early discharge to the ward. We studied whether considering plasma kinetics of procalcitonin, a biomarker of systemic bacterial infection, over the first 72 critical care hours improved mortality prognostication of septic patients from two US settings. Methods: This retrospective analysis included consecutively treated eligible adults with a diagnosis of sepsis from critical care units in two independent institutions in Clearwater, FL and Chicago, IL. Cohorts were used for derivation or validation to study the association between procalcitonin change over the first 72 critical care hours and mortality. Results: ICU/in-hospital mortality rates were 29.2%/31.8% in the derivation cohort (n = 154) and 17.6%/29.4% in the validation cohort (n = 102). In logistic regression analysis of both cohorts, procalcitonin change was strongly associated with ICU and in-hospital mortality independent of clinical risk scores (Acute Physiology, Age and Chronic Health Evaluation IV or Simplified Acute Physiology Score II), with area under the curve (AUC) from 0.67 to 0.71. When procalcitonin decreased by at least 80%, the negative predictive value for ICU/in-hospital mortality was 90%/90% in the derivation cohort, and 91%/79% in the validation cohort. When procalcitonin showed no decrease or increased, the respective positive predictive values were 48%/48% and 36%/52%. Discussion In septic patients, procalcitonin kinetics over the first 72 critical care hours provide prognostic information beyond that available from clinical risk scores. If these observations are confirmed, procalcitonin monitoring may assist physician decision-making regarding care intensification or early transfer from the ICU to the floor