نتایج جستجو برای: timing of conception

تعداد نتایج: 21170740  

Journal: :Twin research and human genetics : the official journal of the International Society for Twin Studies 2005
Peter O D Pharoah

Congenital anomalies are a major cause of fetal and neonatal death and of childhood morbidity. Chromosomal and other genetic abnormalities, environmental teratogens and some nutritional deficiencies account for some congenital anomalies but the majority are of unknown etiology. The hypothesis is here proposed that a significant proportion of congenital anomalies and cerebral palsy of unknown et...

Journal: :Population and Development Review 2021

This paper investigates the extent to which in utero exposure temperature shocks affects birth weight outcomes Vietnam. Exploiting variations across districts and conception timing within districts, we show that a one standard deviation increase relative local norm (approximately 0.52°C) during first trimester of pregnancy reduces child's at by 67 g or 2.2 percent. Our heterogeneity analysis su...

Journal: :Journal of developmental origins of health and disease 2015
G Ntani P F Day J Baird K M Godfrey S M Robinson C Cooper H M Inskip

Various environmental factors have been associated with the timing of eruption of primary dentition, but the evidence to date comes from small studies with limited information on potential risk factors. We aimed to investigate associations between tooth emergence patterns and pre-conception, pregnancy and postnatal influences. Dentition patterns were recorded at ages 1 and 2 years in 2915 child...

Journal: :iranian red crescent medical journal 0
nourossadat kariman department of midwifery and reproductive health, shahid beheshti university of medical sciences, tehran, ir iran masoumeh simbar the research center for safe motherhood, department of midwifery and reproductive health, shahid beheshti university of medical sciences, tehran, ir iran; research center for safe motherhood (rcsm), department of reproductive health and midwifery, faculty of nursing and midwifery, shahid beheshti university of medical sciences, vali-asr avenue, cross of vali-asr and neiaiesh highway, opposite to rajaee heart hospital, p.o. box: 1996835119, tehran, ir iran. tel/fax: +98-2188202516 fazlollah ahmadi department of nursing, faculty of medical sciences, tarbiat modares university, tehran, ir iran abou ali vedadhir department of antropology, tehran university, tehran, ir iran

conclusions: marital age, and socioeconomic status had a direct association, and hopefulness and marital satisfaction had an indirect one with iranian women’s decision for timing motherhood. therefore, this is the responsibility of policy-makers and healthcare providers to advise women by providing appropriate interventions and facilities. results: the results revealed that among direct pathway...

M. V. S. Murali Krishna P. V. K. Murthy R. P. Chowdary T. Kishen Kumar Reddy

Investigations were carried out to evaluate the performance of direct injection diesel engine with medium grade low heat rejection (LHR) combustion chamber and 3 mm air gap insulated piston, 3 mm air gap insulated liner, and ceramic coated cylinder head [ceramic coating with the thickness of 500 µ was made on the inside portion of the cylinder head].The engine had different operating conditions...

2013
Michelle Bellingham Maria R. Amezaga Beatrice Mandon-Pepin Christopher J.B. Speers Carol E. Kyle Neil P. Evans Richard M. Sharpe Corinne Cotinot Stewart M. Rhind Paul A. Fowler

Exposure of female fetuses to environmental chemicals (ECs) during pregnancy results in a disturbed ovarian adult phenotype. We investigated the influence of pre- and/or post-conception exposure to low-level mixtures of ECs on the structure and function of the fetal ovine ovary. We examined ovarian morphology, expression of oocyte and granulosa cell-specific genes and proteome. Female fetuses w...

Journal: :journal of computational & applied research in mechanical engineering (jcarme) 2015
m. v. s. murali krishna r. p. chowdary t. kishen kumar reddy p. v. k. murthy

investigations were carried out to evaluate the performance of direct injection diesel engine with medium grade low heat rejection (lhr) combustion chamber and 3 mm air gap insulated piston, 3 mm air gap insulated liner, and ceramic coated cylinder head [ceramic coating with the thickness of 500 µ was made on the inside portion of the cylinder head].the engine had different operating conditions...

سیدشریفی, رئوف, نعمتی , علیرضا ,

In order to study the effects of nitrogen application rate and timing on grain yield, phyllochron and leaf appearance rate of corn (Zea mays L.), an experiment was conducted as split plot based on randomized complete block design with three replications at the Research Farm of University of Mohaghegh Ardabili, Ardabil, Iran during 2009 growing season. Nitrogen rates were arranged in main plot w...

Background Persons living with HIV often face discrimination in safe sex and reproductive choices, especially in lowresource settings. This study assessed fertility desires and intentions, risk perception and correlates of ever use of at least one safer conception method among HIV-infected women attending a tertiary health facility ...

2012
Surbhi Malhotra

The treatment of infertility has developed rapidly, and the anaesthetist may be involved in many aspects of the patient’s treatment, which may be complex. The harvesting of oocytes needs to take place within a defined period of time, or ovulation may have occurred and oocytes will be lost. Couples presenting for infertility treatment are generally anxious and often the women are emotional at th...

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