The posterior ethmoidal artery is a collateral of the ophthalmic artery and participates in the vascularization of the nasal cavities. It is an important landmark in endonasal surgery with complex orbital contents relationships. We recognize many anatomical and functional varieties. This chapter proposes to present a classic descriptive anatomical s…
This chapter describes the process of identifying a power generation system. This is important because in principle the system parameters as a whole are not linear and uncertain. For this reason, it is necessary to carry out an identification process using an experimental approach that is able to represent the system as a whole. The technique used i…
Today hypertension has become a threat to the human lives. Different factors like sensitivity to sodium, obesity, alcohol consumption, sedentary lifestyle and smoking are responsible for the development of hypertension. Hypertension can be of major risk factor to cardiovascular diseases (CVD). Because of their small molecular mass, bioactive peptide…
Mentorship is critical to the development and professional growth of graduate medical education (GME) trainees. It is a bidirectional relationship between a mentor and a mentee. Mentorship has consistently been shown to be beneficial for both the mentor and mentee, with the mentee gaining valuable skills in education, personal growth, and profession…
Venous and arterial thrombosis are complex disorders involving several genetic inherited thrombotic and environmental risk factors as well as many mechanistic pathways including those of hemostatic, inflammatory and oxidative homeostasis. To provide an overview of genetic polymorphisms associated with thrombotic disorders, we studied related pathway…
Africa contains some of the richest biodiversity in the world, blessed with bountiful plants of economic importance and plants of medicinal importance which when developed would reduce our expenditure on imported drugs to meet our health needs. Plants are source of phytochemicals that possess emollients, humectants and medicinal properties. A comple…
Oil undergoes temporary viscosity changes under operating conditions in engines. Therefore, engine oils usually contain polymeric additives called viscosity modifiers. These additives are oil soluble polymers; enable the oil to provide adequate hydrodynamic lubrication at high temperatures and good starting/pumping performance at low temperatures. P…
In this chapter, we present our study of geopolymers and hybrid geopolymers synthesized with treated fly ash from eggshells (FAES) and sand from the dunes of southern Algeria using activators such as NaOH and Na2SiO3, respectively, in addition to the organic polymer polyethylene terephthalate (PET). Several parameters have been modified, such as alk…
We reported here the synthesis of new α,α-diaminoester and α,α-diamino acid derivatives, as 2-benzamido-2-[(tetrahydro-furan-2-ylmethyl)amino] acetic acid through alkaline hydrolysis reaction of corresponding N-benzoylated methyl α,α-diamino ester. The α,α-diaminoester derivative was synthesized by nucleophilic substitution of methyl α-azid…