The universal applications of microtubes and microtube composites

Microtubes are a basic component for a myriad of potential products. They are very small tubes (hundreds can fit in a human hair) that can be made from practically any material. Tubes larger than 1 micron diameter can be made with any cross-sectional shape desired. The significance of microtubes and microtube composites is that they provide the opportunity to miniaturize (even to the nanoscale) numerous products and devices that are currently in existence as well as allowing the fabrication of products that have to date been impossible to produce

Implementing the International Treaty on Plant Genetic Resources for Food and Agriculture in Nepal: achievements and challenges

This book documents the results of the research and capacity development efforts to implement the ITPGRFA in Nepal. Its chapters cover five main interrelated themes: national-level multi-lateral system policy development; policy actors and networks; germplasm flows and interdependence; farmers’ involvement; and technology transfer. ITPGRFA implementation in Nepal has made considerable progress, but the policy environment in Nepal could be further improved. A positive development is the drafting of new policy and legal instruments, such as the agro-biodiversity conservation and utilization act and regulations

Study of clinical characteristics of women with polycystic ovarian syndrome

Background: Polycystic ovarian syndrome (PCOS) is one of the most common endocrinal disorders of the reproductive age group causing anovulation, infertility incidence being 8.7-17.8%. It is associated with obesity, insulin resistance, dyslipidaemia and metabolic syndrome. This study was aimed to study the different clinical characteristics of women diagnosed with PCOS, attending a tertiary care hospital outpatient department.Methods: This was a hospital-based cross-sectional observational study of 200 patients with PCOS meeting the revised Rotterdam criteria from January 2018-June 2019 excluding pregnant and women with other systemic disorders. A detailed history and examination done, data collected regarding menstrual complaints, features of hyperandrogenism, hirsutism, acne, oily skin and Acanthosis Nigricans (AN) was documented. All data were statistically analyzed and compared using the chi-square or fissures’ exact test. p-value <0.05 considered significant.Results: A total of 200 patients with PCOS were included in the study, of which 41% were obese, 18% lean. The mean age was 24.44±5.62 years. Menstrual complaints were present in 88% -oligomenorrhea (49%) being the most common. 59% had hirsutism,38% of severe grade. Acanthosis nigricans was present in 33% of the patients. Correlation between hirsutism and alopecia, waist to hip ratio (WHR); acanthosis and WHR were statistically significant.Conclusions: PCOS is an ill-defined symptom complex where ethnicity plays a vital role, hence creating a greater need to know the characteristics of the syndrome in different populations and ethnicity. All women presenting with oligomenorrhea or other menstrual complaint should be investigated for PCOS and treated accordingly. The syndrome usually occurs with multiple characters. Though obesity is common in PCOS, non-obese are also at risk. The prevalence of AN and Hirsutism in PCOS were comparable. This mandates a need to increase awareness regarding the syndrome in the general population

Biamperometric Determination of Au(III) & of Au(III) & U(VI) in Their Binary Mixtures.

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Nil Intervention is at Times the Best Intervention: Benign emptying of pneumonectomy space

A sudden drop of air-fluid level in the pneumonectomy space in the absence of a bronchopleural fistula and pleural infection is termed benign emptying of the post pneumonectomy space (BEPS). We herein report a case of benign emptying of pneumonectomy space, briefly review the literature and enumerate possible mechanisms for the same. It is an extremely rare entity and follows a benign course. Patients with BEPS are clinically stable, afebrile with no fluid expectoration, and have a normal white blood cell count. Bronchoscopy reveals an intact bronchial stump and pleural fluid cultures are often sterile. Close monitoring and early detection of a bronchopleural fistula is the management. Clinicians should keep BEPS among the differential diagnosis in case of a drop in the air-fluid level of the post pneumonectomy space. Awareness of this entity is crucial as it helps prevent unnecessary and morbid surgical interventions. Keywords: Pneumonectomy; BEPS; Bronchopleural Fistula; India

Terahertz magneto-optical spectroscopy of two-dimensional hole and electron systems

We have used terahertz (THz) magneto-optical spectroscopy to investigate the cyclotron resonance in high mobility two-dimensional electron and hole systems. Our experiments reveal long-lived (~20 ps) coherent oscillations in the measured signal in the presence of a perpendicular magnetic field. The cyclotron frequency extracted from the oscillations varies linearly with magnetic field for a two-dimensional electron gas (2DEG), as expected. However, we find that the complex non-parabolic valence band structure in a two-dimensional hole gas (2DHG) causes the cyclotron frequency and effective mass to vary nonlinearly with the magnetic field, as verified by multiband Landau level calculations. This is the first time that THz magneto-optical spectroscopy has been used to study 2DHG, and we expect that these results will motivate further studies of these unique 2D nanosystems.Comment: 11 pages, 7 figure