Get Full Essay Get access to this section to get all help you need with your essay and educational issues. Get Access Osmosis and Diffusion Lab Essay Sample The purpose of this lab was to observe the rate of osmosis and diffusion, as well as the effect of molecular size of the particles on this rate. Part I of the lab was a demonstration of osmosis and diffusion, that dealt with raisins in different liquid environments, each with a different concentration of sugar.
Classification[ edit ] Infant mortality rate IMR is the number of deaths per 1, live births of children under one year of age. The rate for a given region is the number of children dying under one year of age, divided by the number of live births during the year, multiplied by 1, Perinatal mortality is late fetal death 22 weeks gestation to birthor death of a newborn up to one week postpartum.
Neonatal death is often attributed to inadequate access to basic medical care, during pregnancy and after delivery. The major contributors to postneonatal death are malnutrition, infectious disease, troubled pregnancy, Sudden Infant Death Syndrome and problems with the home environment.
In the United States, a primary determinant of infant mortality risk is infant birth weight with lower birth weights increasing the risk of infant mortality.
The determinants of low birth weight include socio-economic, psychological, behavioral and environmental factors. Congenial malformations[ edit ] Congenial malformations is a birth defect that babies are born with such as cleft lip and palate, down syndrome, and heart defects. Often times, this occurs when the mother consumes alcohol, but it can also be a cause of genetics or have an unknown cause.
Malnutrition and infections diseases were the main cause of death in more undeveloped countries. These birth defects mostly had to do with heart and central nervous system. In the 19th century, there was a decrease in the amount of infant deaths from heart diseases.
As compared with normal-birth-weight infants, those with low weight at birth are almost 40 times more likely to die in the neonatal period; for infants with very low weight at birth the relative risk of neonatal death is almost times greater. LBW may be the leading cause of infant deaths, and it is greatly preventable.
Although it is preventable, the solutions may not be the easiest but effective programs to help prevent LBW are a combination of health care, education, environment, mental modification and public policy, influencing a culture supporting lifestyle.
Reasons for this include teenage pregnancyincrease in pregnant mothers over the age of thirty-five, increase in the use of in-vitro fertilization which increases the risk of multiple births, obesity and diabetes.
Also, women who do not have access to health care are less likely to visit a doctor, therefore increasing their risk of delivering prematurely. Sudden infant death syndrome Sudden infant death syndrome SIDS is a syndrome where an infant dies in their sleep with no reasoning behind it. Even with a complete autopsy, no one has been able to figure out what causes this disease.
This disease is more common in Western countries. Scientist have also discovered three causes within a model they created called, the contemporary triple risk model. This model states that three conditions such as the mother smoking while pregnant, the age of the infant, and stress referring to conditions such as overheating, prone sleeping, co-sleeping, and head covering.
Malnutrition in children Malnutrition or undernutrition is defined as inadequate intake of nourishment, such as proteins and vitamins, which adversely affects the growth, energy and development of people all over the world.
It is estimated that about 3. Adverse effects of malnutrition[ edit ] Children suffering from malnutrition face adverse physical effects such as stunting, wasting, or being overweight. In Africa the number of stunted children has risen, while Asia holds the most children under 5 suffering from wasting.
Micronutrient deficiency such as iron has been linked to children with anemia, fatigue, and poor brain development.
The mother may not be aware of the infection, or she may have an untreated pelvic inflammatory disease or sexually transmitted disease.
These bacteria can move up the vaginal canal into the amniotic sac surrounding the baby. Maternal blood-borne infection is another route of bacterial infection from mother to baby. Neonatal infection is also more likely with the premature rupture of the membranes PROM of the amniotic sac.
Measles is the fifth-largest cause of childhood mortality. Water contaminated with various pathogens houses a host of parasitic and microbial infections.
Infectious disease and parasites are carried via water pollution from animal wastes.Diffusion Lab Essay - Diffusion Lab Problem Will starch, water, glucose, iodine or a combination of the above diffuse across the membrane of the dialysis bag causing the bag to either expand or shrivel.
Published: Mon, 5 Dec Water scarcity is the major problem that is faced all across the world. Although 2/3rd of the earths crust is made up of water but all this water is not available for drinking and for other human activities as either it is locked in the form of ice or present in the form of vast saline oceans and seas.
Osmosis and Diffusion Lab Essay Sample. The purpose of this lab was to observe the rate of osmosis and diffusion, as well as the effect of molecular size of the particles on this rate. Finally, the average rate of diffusion of each substance against its molecular weight and the partial rate of diffusion of each substance against the time elapsed was plotted and given an interpretation in Figures and respectively.
The Effect of Varying Molecular Weights on the Rate of Diffusion Essay Sample. The effect of molecular weight on the rate of diffusion was verified by the 2 tests: . This essay explores the evolution of bioreactor concepts and sheds light on its applications in various scientific aspects and its position in research.
Definitions of bioreactors focus on designs and processes.
Bioreactors refer to certain devices or system which supports biologically active.