In this experimental study, three TiB2/Al metal matrix composites (MMCs) with 40 μm in mean size were produced using a melt stirring squeeze casting route. Test was carried out to find the parameters influencing surface roughness (Ra) and material removal rate (MRR) on machining the TiB2 reinforced Al-6063 composite materials. The orthogonal array, the signal-to-noise ratio, and analysis of var...

OBJECTIVES Within a randomised trial of neonatal vitamin A supplementation (VAS) in Guinea-Bissau, neonatal VAS did not affect overall infant mortality. We conducted a post-hoc analysis to test the hypothesis that neonatal VAS primes the response to subsequent vitamin A. METHODS All trial children were offered VAS after follow-up ended at 1 year of age (FU-VAS). We compared mortality between ...

BACKGROUND The World Health Organization recommends vitamin A supplementation (VAS) at vaccination contacts after 6 mo of age to reduce mortality. However, it is unknown whether the effect of VAS is independent of vaccinations. One of the original VAS trials from Ghana had collected vaccination information. OBJECTIVE We reanalyzed the data to explore the hypothesis that VAS reduces mortality ...

manufacturing process frequently employs optimization of machining parameters in order to improve product quality as well as to enhance productivity. the material removal rate is a significant indicator of the productivity and cost efficiency of the process. taguchi method has been implemented for assessing favorable (optimal) machining condition during the machining of nylon by considering thr...

BACKGROUND Medical record review (MRR) is one of the most commonly used research methods in clinical studies because it provides rich clinical detail. However, because MRR involves subjective interpretation of information found in the medical record, it is critically important to understand the reproducibility of data obtained from MRR. Furthermore, because medical record review is both technic...

OBJECTIVE Invasive bladder cancer (IBC) is a common urological malignancy accounting for 4%-5% of all cancers in Denmark. Our aim was to examine possible changes in short- and long-term survival of patients with IBC during 1998-2009. STUDY DESIGN AND SETTING Data on all patients (N = 4032) with an incident diagnosis of IBC within a population of 1.8 million were retrieved from the Danish Nati...

Background and Aims: We sought to evaluate the prognosis of preoperative blood routine parameters for the mortality of colorectal cancer patients after surgery by eliciting a subset of data from the ongoing Fujian prospective investigation of cancer (FIESTA) study. Methods: 1318 colorectal cancer patients with completed survival data were enrolled between 2000 and 2008. Effect-size estimates ar...

BACKGROUND The German East-West mortality difference narrowed rapidly after the 1990 unification, particularly for women. We analyse recent trends for women aged 50-89 years and document for the first time lower mortality in the East. We study how smoking contributes to this cross-over. METHODS We analyse mortality by cause for women aged 50-89 over the years 1992-2009 for the East and West G...

Introduction: As reliance on small unmanned aerial systems (UASs) expands, and sensors requiring higher-bandwidth downlinks are developed, the need for secure high-data-rate communications increases. Laser communication (lasercom), also known as free-space optical (FSO) communication, is inherently low-probability-of-interception and detection (LPI/ LPD). Lasercom has been previously demonstrat...