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Shettles Method
The Shettles Method is a child conception idea that is reputed to help determine a baby's sex. It was developed by Landrum B. Shettles in the 1960s and was publicized in the book ''How to Choose the Sex of Your Baby'', coauthored by Shettles and David Rorvik. The book was first published in 1971 and has been in print in various editions ever since. By following the various methods outlined in the book, it is proposed that a couple can affect the probability of having a boy or a girl. Concept According to the hypothesis, male (Y) sperm are faster but more fragile than female (X) sperm. Further, acidic environments harm Y sperm, according to the theory, making conception of a girl more likely The Shettles method aims to exploit these two factors. The Shettles method differs from the Ericsson method, in which the semen is deposited outside the woman and time is given for the fast/slow swimmers to separate before artificial insemination takes place. Timing of Intercourse To have a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fertilisation
Fertilisation or fertilization (see spelling differences), also known as generative fertilisation, syngamy and impregnation, is the fusion of gametes to give rise to a new individual organism or offspring and initiate its development. Processes such as insemination or pollination which happen before the fusion of gametes are also sometimes informally called fertilisation. The cycle of fertilisation and development of new individuals is called sexual reproduction. During double fertilisation in angiosperms the haploid male gamete combines with two haploid polar nuclei to form a triploid primary endosperm nucleus by the process of vegetative fertilisation. History In Antiquity, Aristotle conceived the formation of new individuals through fusion of male and female fluids, with form and function emerging gradually, in a mode called by him as epigenetic. In 1784, Spallanzani established the need of interaction between the female's ovum and male's sperm to form a zygote in frog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Infant
An infant or baby is the very young offspring of human beings. ''Infant'' (from the Latin word ''infans'', meaning 'unable to speak' or 'speechless') is a formal or specialised synonym for the common term ''baby''. The terms may also be used to refer to juveniles of other organisms. A newborn is, in colloquial use, an infant who is only hours, days, or up to one month old. In medical contexts, a newborn or neonate (from Latin, ''neonatus'', newborn) is an infant in the first 28 days after birth; the term applies to premature, full term, and postmature infants. Before birth, the offspring is called a fetus. The term ''infant'' is typically applied to very young children under one year of age; however, definitions may vary and may include children up to two years of age. When a human child learns to walk, they are called a toddler instead. Other uses In British English, an ''infant school'' is for children aged between four and seven. As a legal term, ''infancy'' is more lik ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landrum B
Landrum can refer to: ;People * Bill Landrum (born 1957), American baseball player * Dan Landrum (born 1961), American hammered dulcimer player * Eugene M. Landrum (1891–1967), major general in the United States Army, noted for his exploits in both World War II and the Korean War * John Gill Landrum (1810–1882), pastor at Mount Zion Baptist Church, early South Carolina secessionist * John M. Landrum, (1815-1861) United States Representative * Mary Beth Landrum, British-American statistician * Phil Landrum (1907–1990), United States Representative and a primary sponsor of the Landrum-Griffin Act (see below) * Rich Landrum (born 1946), American broadcaster best known for his late 1970s-early 1980s stint announcing professional wrestling for Jim Crockett Promotions * Landrum Bolling (1913-2018), American diplomat and educator ;Places * Landrum, South Carolina, a city in Spartanburg County ;Other * The Labor Management Reporting and Disclosure Act The Labor Management Report ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
David Rorvik
David Michael Rorvik (born 1944) is an American journalist and novelist who was the author of the 1978 book ''In his Image: The Cloning of a Man'' in which he claimed to have been part of a successful endeavor to create a clone of a human being. The book is widely considered to be a hoax. Biography Rorvik was born in Circle, Montana. He graduated with a B.A. from the University of Montana in 1966 and a M.S. ''summa cum laude'' from the Columbia University Graduate School of Journalism in 1967. He worked as a science writer and a medical reporter for ''Time'' and contributed articles to numerous publications, including ''The New York Times'', and wrote several books. In a 1969 magazine article, Rorvik outlined the Shettles Method to influence the sex of a child. Two years later, he and Landrum B. Shettles co-authored the bestselling book ''Your Baby's Sex: Now You Can Choose''. In 1976, Rorvik was awarded an Alicia Patterson Foundation Fellowship for investigatory reporting on t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ericsson Method
The Ericsson Method is an assisted reproductive technology for sex selection, used before implantation. In this method, sperm that will give rise to male versus female children are separated by moving at different speeds through a protein solution. When used to increase the likelihood of a female child, studies have resulted in between 70% and 80% female children. When used to increase the likelihood of a male child, studies have resulted in between 50% to 75% male children. Method The Ericsson method is based on the belief that X-sperm swim slower than Y-sperm. Sperm are placed atop a "column" of increasingly thicker layers of albumin, and allowed to swim down into the solution. After a certain time period has elapsed, the sperm can be separated into the faster and slower swimmers. If the couple desires a male baby the faster swimmers are artificially inseminated, and if the couple desires a female baby the same procedure is enacted with the slower swimmers. This method diff ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Artificial Insemination
Artificial insemination is the deliberate introduction of sperm into a female's cervix or uterine cavity for the purpose of achieving a pregnancy through in vivo fertilization by means other than sexual intercourse. It is a fertility treatment for humans, and is common practice in animal breeding, including dairy cattle (see Frozen bovine semen) and pigs. Artificial insemination may employ assisted reproductive technology, sperm donation and animal husbandry techniques. Artificial insemination techniques available include intracervical insemination (ICI) and intrauterine insemination (IUI). Humans History The first recorded case of artificial insemination was John Hunter in 1790, who helped impregnate a linen draper's wife. The first reported case of artificial insemination by donor occurred in 1884: William H. Pancoast, a professor in Philadelphia, took sperm from his "best looking" student to inseminate an anesthetized woman without her knowledge. The case was reporte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New England Journal Of Medicine
''The New England Journal of Medicine'' (''NEJM'') is a weekly medical journal published by the Massachusetts Medical Society. It is among the most prestigious peer-reviewed medical journals as well as the oldest continuously published one. History In September 1811, John Collins Warren, a Boston physician, along with James Jackson, submitted a formal prospectus to establish the ''New England Journal of Medicine and Surgery and Collateral Branches of Science'' as a medical and philosophical journal. Subsequently, the first issue of the ''New England Journal of Medicine and Surgery and the Collateral Branches of Medical Science'' was published in January 1812. The journal was published quarterly. In 1823, another publication, the ''Boston Medical Intelligencer'', appeared under the editorship of Jerome V. C. Smith. The editors of the ''New England Journal of Medicine and Surgery and the Collateral Branches of Medical Science'' purchased the weekly ''Intelligencer'' for $600 in 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fertility & Sterility
The American Society for Reproductive Medicine (ASRM) is a nonprofit, multidisciplinary organization for advancement of the science and practice of reproductive medicine. The society has its headquarters in Washington, D.C and its administrative office in Birmingham, Alabama. History and activities Founded in 1944 by a small group of fertility experts who met in Chicago, the initial name was the American Society for the Study of Sterility, later the American Fertility Society (AFS). Though primarily an American organization, it had members from over 100 countries as of 2020. The society hosts an annual scientific congress, as well as courses, seminars, workshops and publications. Special interest groups are focused on a range of reproductive medicine topics. ASRM has an Ethics Committee that provides guidance on ethical issues. The ASRM Practice Committee issues clinical guidelines and reports. World Health Organization NSA status In May 2014, the ASRM became an associated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
