Results 61 to 70 of about 2,384 (215)
Causes and Seasonality of Upper Respiratory Infections in Adults in Lesotho (2021–2022) (CORIAL)
Canadian Journal of Infectious Diseases and Medical Microbiology, Volume 2026, Issue 1, 2026.Background Upper respiratory tract infections cause morbidity and a high burden on healthcare systems worldwide, especially in low‐ and lower middle‐income countries. Recent studies throughout Africa indicate seasonal patterns that deviate from those previously described in settings with temperate climates.
Nikita Sass +15 more
wiley +1 more source
THE CEPHEID DISTANCE TO NGC 0247
The Astrophysical Journal, 2009 We report VRI CCD observations of nine Cepheids in the South Polar (Sculptor) Group spiral galaxy NGC 0247. Periods of these Cepheids range from 20 to 70 days. Over the past 20 years, the brightest Cepheid in our sample, NGC 0247:[MF09] C1, has decreased its period by 6%, faded by 0.8 mag in the V band, and become bluer by 0.23 mag in (V–I).
Barry F. Madore +3 more
openaire +1 more source
The effect of metallicity on Cepheid magnitudes and the distance to M33 [PDF]
Monthly Notices of the Royal Astronomical Society, 2009 We present the results from a multi-epoch survey of two regions of M33 using the 3.5-m Wisconsin-Indiana-Yale-NOAO (WIYN) telescope. The inner field is located close to the centre of the galaxy, with the outer region situated about 5.1 kpc away in the southern spiral arm, allowing us to sample a large metallicity range. We have data for 167 fundamental
Vicky Scowcroft +5 more
openaire +4 more sources
The Classical Cepheid Distance scale in the NIR bands [PDF]
Journal of Physics: Conference Series, 2012 The Period-Luminosity (PL) relation of classical Cepheids is one of the most popular standard candle, being the first rung of the cosmic distance ladder. We discuss both theoretical and empirical features of the PL, Period-Luminosity-Color (PLC) and Period-Wesenheit (PW) relations using the largest optical (V,I; OGLEIII) and near-infrared (NIR, J,H,Ks;
Inno L. +7 more
openaire +2 more sources
International Journal of Cancer, Volume 157, Issue 11, Page 2363-2373, 1 December 2025.What's New? Neoadjuvant chemotherapy (NACT) can be highly effective for patients with early‐stage breast cancer. Patients with hormone receptor‐positive (HRpos), HER2‐negative (HER2neg) breast cancer, however, may benefit less from NACT. Here, the authors investigated survival outcomes with adjuvant chemotherapy or NACT in a population of ...
Milena Beierlein +43 more
wiley +1 more source
The Astronomical JournalIt is beneficial to calibrate the period–Wesenheit–metallicity relation (PWZR) of Delta Cephei stars (DCEPs), i.e., classical Cepheids, using accurate parallaxes of associated open clusters (OCs) from Gaia data release 3 (DR3).
Huajian Wang +5 more
doaj +1 more source
The Astrophysical Journal, 2023 Because of their period–luminosity relation (PLR), classical Cepheids play a key role in the calibration of the extragalactic distance scale and the determination of the Hubble–Lemaître constant H _0 .
Paulina Karczmarek +7 more
doaj +1 more source
The time is now to use the tools we have to end AIDS in children
Journal of the International AIDS Society, Volume 28, Issue 11, November 2025.Abstract Introduction Progress in reducing and eliminating vertical transmission of HIV in children has stagnated over recent years. Unfortunately, recent decisions in the global donor space are likely to lead to considerably lower funding available for HIV and other disease programmes in high‐burden low‐ and middle‐income settings.
Lara Vojnov +9 more
wiley +1 more source