Abstract Safe water reuse usually means the provision of reclaimed with its quality meeting criteria for safeguarding human health and aquatic ecology. Regarding this, people often overstress technological magic in terms hazardous substances removal by engineered processes while ignoring utilization nature's power to provide an additional barrier safety control. Based on understanding function ...

Abstract Study question Does frozen embryo transfer (FET) in natural cycle (NC) and programmed (PC) differ achieving live birth, what are the confounding factors? Summary answer The probability of birth was significantly higher FET compared to cycle. What is known already can be performed or (hormonally modified) but data regarding most optimal preparation endometrium remains conflicting inconc...

Objective To estimate the days in which the likelihood of conception happened by using first trimester ultrasound fetal biometry in natural cycles and spontaneous pregnancy, and to explore some factors that may affect them. MaterialsAndMethods This study is retrospective cohort study, with random sampling. It involved 60 pregnant ladies at first trimester; the date of conception was estimated u...

BACKGROUND The impact of controlled ovarian stimulation (COS) on oocyte and subsequent embryo quality remains controversial. In the present study we have compared embryo quality in natural and stimulated cycles in the same group of patients. METHODS This retrospective study was comprised of patients with a regular menstrual cycle who had IVF after COS using rFSH in a long GnRH agonist protoco...

OBJECTIVE To determine a successful method of selecting patients for natural cycle IVF combined with in vitro maturation (IVM) of immature oocytes and to determine treatment efficacy. DESIGN Retrospective analysis of IVF treatments. SETTING Hospital IVF clinic. PATIENT(S) Women with infertility according to ovarian reserve and endocrine profile were selected for different treatments. IN...

Objective To compare human chorionic gonadotropin (HCG)-administered natural cycle with spontaneous ovulatory cycle in patients undergoing frozen-thawed embryo transfer (FTET) in natural cycles. Methods In this retrospective cohort study, we analyzed the clinical outcome of a total of 166 consecutive FTET cycles that were performed in either natural cycle controlled by HCG for ovulation trigg...

Kwak, J.H. and J. Lee, Isomorphism classes of cycle permutation graphs, Discrete Mathematics 105 (1992) 131-142. In this paper, we construct a cycle permutation graph as a covering graph over the dumbbell graph, and give a new characterization of when two given cycle permutation graphs are isomorphic by a positive or a negative natural isomorphism. Also, we count the isomorphism classes of cycl...