background: establishment of viable pregnancy requires embryo implantation and placentation. ectopic pregnancy (ep) is a pregnancy complication which occurs when an embryo implants outside of the uterine cavity, most often in a fallopian tube. on the other hand, an important aspect of successful implantation is angiogenesis. vascular endothelial growth factor (vegf) is a potent angiogenic facto...

     A simple, rapid, selective and highly sensitive fluorimetric method for determination of two catecholamines, i.e. norepinephrine (NE) and epinephrine (EP), in serum samples was developed. The method is based on the fluorescence sensitization of terbium (Tb3+) by complexation with both catecholamines in the presence of lanthanum (La3+), as a co-cation, and in a Na...

X-ray crystallography showed that the title compound, C(6)H(12)O(5), crystallizes in the α-pyran-ose form with the six-membered ring in a chair conformation. The crystal structure exists as a three-dimensional hydrogen-bonded network of mol-ecules with each mol-ecule acting as a donor and aceptor for four hydrogen bonds. The absolute configuration was determined by the use of l-fucose as starti...

Erythropoietin (EP), insulin-like growth factor I (IGF-I) and stem cell factor (SCF) each reduce apoptosis of human erythroid progenitor cells. To determine if these growth factors have additional roles in stimulating erythropoiesis, the proliferation, maturation, and survival of highly purified human erythroid colony-forming cells (ECFCs) were studied during the application of different combin...

The objective of this study was to determine the effects of plane of nutrition during early and mid-pregnancy on the performance of mature ewes and their offspring. From day 0 to day 39 post mating (early pregnancy, EP), 82 multiparous ewes were fed to provide either 60% (low, L), 100% (medium, M) or 200% (high, H) of predicted metabolisable energy (ME) requirements for maintenance, following a...

The present study explores Saudi Arabian university students’ insights into environmental risk perceptions (ERPs) and built behaviors (BEBs). Based on the findings of previous studies such as Geng et al. (2015), Islam (2019) Alnaim (2022) dire need for further exploration, researchers developed conceptual framework model confirmation in context Arabia. applied a quantitative approached utilized...