Nausea and vomiting are two common complaints of the first trimester of pregnancy, which occur in 70% to 90% of pregnancies. They usually begin around 4th to 8th weeks and continue until about 14th to 16th weeks, and in 90% of cases disappear in 22ed week of pregnancy. Nausea and vomiting in the first trimester of pregnancy may occur at any time throughout the day or night. Meanwhile the etiolo...

Background and Objective: Abnormal regulation of apoptosis and metallothioneine in maternal tissues may be dangerous for the developing fetus. The aim of this study was to investigate the effect of endurance swimming training on liver apoptotic index and metallothioneine concentration in pregnant rats. Materials and Methods: Sixteen pregnant Wistar rats (200 ± 20 g) were divided into two gro...

‏‎for the first time nakayama introduced qf-ring. in 1967 carl. faith and elbert a. walker showed that r is qf-ring if and only if each injective right r-module is projective if and only if each injective left r-modules is projective. in 1987 s.k.jain and s.r.lopez-permouth proved that every ring homomorphic images of r has the property that each cyclic s-module is essentialy embeddable in dire...