Multifractality and cross-correlation analysis of streamflow and sediment fluctuation at the apex of the Pearl River Delta.

The fluctuation and distribution of hydrological signals are highly related to the fluvial and geophysical regime at estuarine regions. Based on the long daily streamflow and sediment data of Makou (MK) and Sanshui (SS) stations at the apex of the Pearl River Delta, the scaling behavior of the streamflow and sediment is explored by multifractal detrended fluctuation analysis (MF-DFA). The results indicated that there was significant multifractal structure present in the fluctuations of streamflow and sediment.

Worldwide prevalence of adverse pregnancy outcomes among singleton pregnancies after in vitro fertilization/intracytoplasmic sperm injection: a systematic review and meta-analysis.

Purpose: The worldwide prevalence of adverse pregnancy outcomes (APOs) in singleton pregnancies after in vitro fertilization (IVF)/intracytoplasmic sperm injection (ICSI) is suggested to vary; however, a complete overview is missing. The aim of this review is to estimate the worldwide prevalence of APOs associated with IVF/ICSI singleton pregnancies.

Methods: PubMed, Google Scholar, Cochrane Libraries, and Chinese databases were searched for studies assessing APOs among IVF/ICSI singleton births through March 2016.

Adverse Obstetric Outcomes Associated With In Vitro Fertilization in Singleton Pregnancies.

Objective: To compare the obstetric outcomes of women treated with in vitro fertilization (IVF), women with indicators of subfertility but without assisted reproductive technologies, and fertile women with singleton pregnancies.

Methods: A prospective cohort study was conducted from March 2013 to February 2016 at the Hunan Provincial Maternal and Child Health Hospital in China. Finally, 1260 eligible mothers were recruited into the IVF group, 1899 into the subfertile group, and 2480 into the fertile group.

Assisted reproductive technology and risk of adverse obstetric outcomes in dichorionic twin pregnancies: a systematic review and meta-analysis.

Objective: To examine whether dichorionic twin pregnancies after assisted reproductive technology (ART) were at higher risk of adverse obstetric outcomes compared with those conceived naturally.

Design: Meta-analysis.

Setting: University-affiliated teaching hospital.

Assisted reproductive technology and the risk of pregnancy-related complications and adverse pregnancy outcomes in singleton pregnancies: a meta-analysis of cohort studies.

Objective: To determine whether there are any increases in pregnancy-related complications and adverse pregnancy outcomes in singleton pregnancies after assisted reproductive technology (ART) compared with those conceived naturally.

Design: Meta-analysis.

Setting: University-affiliated teaching hospital.

[Investigation on development potential of blastomeres isolated from 4-cell human embryos].

Objective: To investigate the development potential of blastomeres isolated from 4-cell human embryos.

Methods: Human oocytes were collected after controlled ovarian hyperstimulation and fertilized in vitro. The zona pellucida of 4-cell stage embryos were removed and the embryos were separated to single blastomeres and cultured in vitro.