AIM The aim was to investigate serum vitamin D (25-OH) level among females with hypothyroidism. MATERIALS AND METHODS A case-control study (58 in each arm) was conducted in Arar Central Hospital, Kingdom Saudi Arabia. The cases were females with hypothyroidism, and healthy females were controls. TSH, thyroid hormones: Free T3 (FT3) and Free T4 (FT4) and haemoglobin levels were measured in all...

A kiloelectronvolt beam of helium ions is used to ionize and fragment precursor peptide ions starting in the 1+ charge state. The electron affinity of helium cations (24.6 eV) exceeds the ionization potential of protonated peptides and can therefore be used to abstract an electron from--or charge exchange with--the isolated precursor ions. Kiloelectronvolt energies are used, (1) to overcome the...

The fragrant Citronella oil derived from Cymbopogon nardus (L.) Rendle has many benefits, one of which is as an antibacterial. This research aims to identify the chemical compounds present in essential obtained a local distillery Anding Village, Suliki District, Gunung Mas 50 Kota Regency, Province West Sumatra. was identified using Gas Chromatography-Mass Spectrophotometry (GC-MS) at BRIN (Nat...

A new synthetic medium having negligible ultraviolet absorbance is described for growing staphylococci in experiments requiring ultraviolet spectrophotometry of cell-free portions of the culture.

A first-derivative spectrophotometric method was developed for quantitative determination of two synthetic organic dyes, Carmoisine and Patent Blue V, which are under governmental regulations all over the world because of their toxicity and carcinogenity. In this study, Carmoisine and Patent Blue V were simultaneously determined in their binary mixtures by first-derivative spectrophotometry. Th...

We present the first results from a study designed to test whether, given high-quality spectrophotometry spanning the mid-ultraviolet–optical wavelength regime, it is possible to distinguish the metal content and star-formation history of individual elliptical galaxies with sufficient accuracy to establish whether their formation history is linked to their detailed morphology and position on th...

Blood lead levels (BLL) in women of child-bearing age have been decreasing in recent decades, but still remains a concern for long-term effects of child psychomotor development. The aim of the study was to characterize lead exposure among Polish pregnant women and assess the relationship between BLL and selected socio-demographic, economic and lifestyle factors. The study population consisted o...

α-Viniferin and caraphenol A, the two oligostilbenes, have the sole difference of the presence or absence of an exocyclic double bond at the π-π conjugative site. In this study, the antioxidant capacity and relevant mechanisms for α-viniferin and caraphenol A were comparatively explored using spectrophotometry, UV-visible spectral analysis, and electrospray ionization quadrupole time-of-flight ...