We propose that membranes whose proteins and polar lipids are distributed asymmetrically in the two halves of the membrane bilayer can act as bilayer couples, i.e., the two halves can respond differently to a perturbation. This hypothesis is applied to the interactions of amphipathic drugs with human erythrocytes. It is proposed that anionic drugs intercalate mainly into the lipid in the exterior half of the bilayer, expand that layer relative to the cytoplasmic half, and thereby induce the cell to crenate, while permeable cationic drugs do the opposite and cause the cell to form cup-shapes. This differential distribution of the drugs is attributed to interactions with the phosphatidylserine that is concentrated in the cytoplasmic half of the membrane. Impermeable amphipathic drugs intercalate only into the exterior half of the bilayer, and therefore are crenators of the intact cell.
Knowing how to identify geometric figures is important to understanding the basic properties of various shapes. Basic properties of geometric figures will be useful in more complex math lessons. In this session you will learn about properties of triangles and how to classify them. Includes lesson about medians of triangle, altitudes of triangle and more with nice power point presentations.
This is a presentation on visual design elements. Here you will learn all about design elements. You will know all the elements of design, its applications and uses. You will also know where you can find more solutions on design elements
Soap nut powder has been in use for almost 3,000 years. And still in many parts of India, soap nut powder is using as a natural soap to remove oil.Soap is a sodium salt or potassium salt of long chain fatty acids having cleansing action in water. They are using as cleansing agents to remove dirt, oil from the skin and clothes.Examples:Sodium stearate, sodium oliate and sodium palmitate formed using stearic acid oleic acid and palmitic acid.
A dental implant (also known as an endosseous implant or fixture) is a surgical component that interfaces with the bone of the jaw or skull to support a dental prosthesis such as a crown, bridge, denture, facial prosthesis or to act as an orthodontic anchor. The basis for modern dental implants is a biologic process called osseointegration where materials, such as titanium, form an intimate bond to bone. We are going to discuss the four Biomaterials and their Dental Applications, the Advantages and Disadvantages of each Material.
The connective tissue of oral mucosa plays an important role in health and disease. This presentation will describe all the components of the connective tissue of oral mucosa and its function and importance.
Many medical problems alter the nutritional needs resulting malnutrition Poor nutrition enhance the severity and course of disease 40-60% Hospitalized patients are malnourished and other may develop it after 3 weeks of their admission Altogether, it compromise the patient immune system and reduce the rate of its recovery Illness caused severe effect on nutritional status
This presentation basically covers the key areas in rotational dynamics and can be a useful resource for people at varied knowledge levels. (from primary to advanced)
the important aspects of guidelines to be followed in dental colleges and clinic during COVID-19,DO'S and DONT'S in each speciality and hoe to treat resolved COVID-19 patients?
All cells have the following basic structure: A thin, flexible plasma membrane surrounds the entire cell. The interior is filled with a semi-fluid material called the cytoplasm. Also inside are specialized structures called organelles and the cell’s genetic material.
The study of size-assortative mating is of great importance in sexual selection and speciation. Still the proximate mechanisms that lead to such patterns are poorly understood. Size-assortative mating is often thought to come from a directional preference for larger mates. However, many constraints affect mating preferences and understanding of size assortment requires a precise evaluation of the pair formation mechanism (Galipaud et al., 2013).