Publications by authors named "K Sunilkumar"

Purpose: To investigate whether hip arthroscopy (HA) is effective in patients with femoroacetabular impingement and concomitant hip osteoarthritis (OA) of Tönnis grade 2 or greater.

Methods: This review was registered in the International Prospective Register for Systematic Reviews and Meta-analysis (PROSPERO, CRD42020210936). It followed the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-analyses) guidelines and included multiple databases: MEDLINE, Embase, Web of Science Core Collection, and Cochrane Library.

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Free-space optical (FSO) communication systems employ unguided light beams propagating through the atmosphere to carry a large volume of data. The reliability of such data transfer can be hampered by various atmospheric effects. Based on an analytical model of a differential phase-shift keying FSO system through exponentiated Weibull turbulence, we investigate the effectiveness of beam width optimization and improved beam alignment, along with aperture averaging on the average channel capacity.

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Article Synopsis
  • Fetal death is a significant issue, especially in low- and middle-income countries, and is often linked to placental lesions, but previous research struggled with inconsistent classification systems for these lesions.
  • This study aimed to explore how maternal and fetal vascular malperfusions in the placenta are related to fetal and neonatal deaths, particularly in the context of serious maternal health issues like hypertension and hemorrhage.
  • Conducted in India and Pakistan, the study found higher rates of maternal vascular malperfusion in placentas linked to fetal and preterm neonatal deaths, indicating a strong association with adverse pregnancy outcomes.
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Introduction: Outcomes of hip arthroscopy for femoroacetabular impingement and concomitant moderate- to advanced hip osteoarthritis (Tönnis Grade II or greater) is still a matter of debate as findings in the literature are controversial. This study aims to investigate whether hip arthroscopy is effective in treating patients with femoroacetabular impingement and Tönnis hip osteoarthritis Grade II or greater.

Methods And Analysis: The protocol follows the PRISMA-P guidelines.

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Propagation through turbulent media produces complex amplitude fluctuations and temporal spreading of narrow optical pulses. Light-absorbing aerosols present in the atmospheric transmission path will perturb the refractive index structure parameter (Cn2) through atmospheric heating. The consequent enhancement in broadening and attenuation of ultrashort (femtosecond) optical pulses has been calculated by combining multi-satellite observations, radiosonde profiles and computational radiative transfer.

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