Coherent Dynamic Nuclear Polarization using Chirped Pulses.

This paper presents a study of coherent dynamic nuclear polarization (DNP) using frequency swept pulses at 94 GHz which optimize the polarization transfer efficiency. Accordingly, an enhancement ε ∼ 496 was observed using 10 mM trityl-OX063 as the polarizing agent in a standard 6:3:1 -glycerol/DO/HO glassing matrix at 70 K. At present, this is the largest DNP enhancement reported at this microwave frequency and temperature.

Green-engineered synthesis of BiZrO NPs: excellent performance on electrochemical sensor and sunlight-driven photocatalytic studies.

In this rapid growing eco-friendly research world, synthesis of non-toxic, highly effective photocatalyst for potential applications is necessary. Herein, a strong ability BiZrO nanoparticle (BZO NP) with pyrochlore structure was fabricated by solution combustion synthesis using green (Mentha spicata) and chemical (Glycine) fuels. The X-ray diffraction analysis confirms the formation of pure phase for synthesized BZO NP using pudina extract (BZOP NP) compared to BZO NP using Glycine fuel (BZOG NP).

Elderly patients have increased perioperative morbidity and mortality from oesophagectomy for oesophageal cancer: A systematic review and meta-analysis.

Background: Although oesophagectomy remains technically challenging and associated with high morbidity and mortality, it is now increasingly performed in an ever-ageing population with improvement in perioperative care. However, the risks in the elderly population are poorly quantified. The study aims to review the current evidence to quantify further the postoperative risk of oesophagectomy for cancer in the elderly population compared to younger patients.

An assessment of risks associated with obstructive sleep apnea and its relationship with adverse health outcomes among pregnant women. A multi-hospital based study.

Introduction: Physiological changes in pregnancy increase the vulnerability of antenatal women to develop obstructive sleep apnoea (OSA). It is a known cause of several adverse health outcomes in pregnancy.

Objectives: To assess the risk status of OSA in pregnant women and to study its association with adverse maternal outcomes, fatigability, and daytime sleepiness.