Advantages And Disadvantages Of Colloids

"Silver Chloride (AgCl) - Properties and Applications." Silver Chloride (AgCl) - Properties and Applications. The A to Z of Materials, 2013. Web. 18 Feb 2014. <http://www.azom.com/article.aspx?Articl

Who would have thought we would be using nuclear substances for medical purposes? Well, we are many different ways. I am going to discuss a test called the Indium Scan; this test requires the use of nuclear substances being injected into the blood stream via an IV. The amount of Indium that is giving is based on the patient and what the doctor feels as appropriate.

The nuclear medicine technologist use radionuclides to diagnose and treat diseases. Radionuclides means unstable atoms that release radiation spontaneously and they are purified and compounded to form radiopharmaceuticals that prepare and administer by nuclear medicine technologist. These technologists are particularly specialized health care professional. The radioactive drugs appear higher or lower concentration in the abnormal area of the patient’s body than in the normal area.

Many molecules, particularly peptides and polypeptides are physically embedded in polymers to create a complex network of interconnecting pores through which the drug could subsequently diffuse. The pore structure and polymer composition is controlled in order to design systems that release the drug at nearly any rate and for nearly

3.2 Selection of soluble silver salt for the mobile phase Soluble silver salt in the mobile phase provided silver ion for the interactions with unsaturated C-C bonds. Silver nitrate (AgNO3) that act as sources of silver ions has been frequently used in silver ion chromatography. However, bitrate radical (NO3－) in the mobile phase has the stronger background absorption among 190 ~ 240 nm as shown in Fig.2a [40]. Since the UV detection wavelength of alantolactone and isoalantolactone was also in the range of 190 to 240 nm as shown in Fig.2b [41], AgNO3 in mobile phase can cause extremely strong background absorption interference, as shown in Fig.2c and Fig.2d. For this reason, we selected silver perchlorate (AgClO4) as sources of silver ions,

Nuclear medicine is a certain branch of medicine that uses a specific type of radiation to give out important information about how a person's specific organs work. As well as, showing the organ and treating a disease that is inside of it. When information gets viewed by special physicians, they make sure to get a quick, accurate diagnosis of what the patient's illness is right away. The main organs that can be easily imaged by the nuclear medicine is the thyroid, bones, heart, liver, lungs, and the gallbladder. There are many hospitals that use the radiation; called radioisotope, in medicines. The most common one is named Technetium-99, which is used in medical diagnostic procedures annually. Nuclear medicine was created in the 1950s by physicians

Nuclear medicine is a branch of medical science, which uses small amounts of radioactive materials in order to diagnose and treat diseases. These diseases include cancers, heart diseases, and other irregularities in the body. The nuclear medicine is injected into the blood stream in order to identify potential diseases. There are over forty million nuclear medicine procedures preformed each year through radiation, or the energy in form of waves or high speed particles. The use of nuclear medicine allows the treatment of diseases without surgery. This form of treatment causes only minimal damage to the tissues surrounding cancerous cells.

Medicine has developed into an astonishing work of pure art over the years. From an old village healer crushing the simplest herbs in ancient times, to large machines administering chemical formulas to patients today. The newest addition to this artwork is Nuclear Medicine. Nuclear Medicine is a medicine that deals with the use of radioactive substances entering the body to attach/ attack cells. Whether it be to diagnose, test, or to treat, this nuclear technology has driven the medical and chemistry world into the future.

Agarose is a polysaccharide that is used especially in gels for a process called electrophoresis. It is used in DNA fingerprinting because it slows down the speed at which the DNA migrates from the negative pole to the positive pole so that the process is easier to visualize and to gather results from. In addition to this, the agarose also creates the actual gel that is being manipulated.

In this lab we are going to create silver ornament using oxidation which is a reduction chemical reaction. The process used in this lab is similar to how silver mirrors are created. Mirrors have been around for many years, dating back to at least 3,000 years ago in China and the Middle East. The method for making these mirrors consisted of the hammering of bronze, copper, or tin sheets to make them smooth. The making of glass was developed in Rome in ancient times and 17th century Italy craftsmen had made a better method of lining the glass with the reflective metals that were listed before. Another process, created by a German chemist by the name of Justus von Liebig, involved the silvering of glass sheets with a thin layer of silver

The results showed that the strong oxidative solutions did not allow for the growth of bacterial colonies where the solution containing alcohol allowed for the growth of 264 colonies. Since there was no growth in either of the petri dishes containing hydrogen peroxide or bleach, it could not be concluded which, if either, chemical agent was the superior disinfectant. (See figure 1).

Silver is an element that is found on the Periodic Table. The element silver is symbolized on the periodic table with the letters Ag. The symbol Ag of silver comes from a latin word for silver which is argentum. Silver on the Periodic Table is found in group 11. Silver has an atomic number of 47. The atomic number determines the chemical properties of an element and is placed on the top of the symbol on the periodic table. The mass number of the element silver is 107. To determine the atomic number you use the number of protons and neutrons in the element. Silver has 60 neutrons which is a subatomic particle found in the nucleus of every

Among other approaches tried by scientists, colloidal systems like liposomes, polymeric nanoparticles etc., have shown promise but not many products have made it to the market (7). Nanoparticulate drug delivery systems are gaining much popularity in recent years. Among these, nanoparticulate drug delivery systems from biodegradable and biocompatible polymer are an interesting option for controlled drug delivery and drug targeting (8). Amongst the various drug-delivery systems, solid lipid nanoparticle (SLN) and nanostructured lipid carrier (NLCs) are potentially attractive choices due to their natural components and easily scaled-up formulation processes. In addition, their hydrophobic core provides a suitable environment for entrapment of hydrophobic drugs (9). Among the important technological advantages of nanoparticles as drug carriers are: high stability (i.e. long shelf life), high carrier capacity (i.e. many drug molecules can be incorporated into the particle matrix), feasibility of incorporation of both hydrophilic and hydrophobic substances, and feasibility of variable routes of administration (10). NLCs are kind of lipid-based nanoparticles, which has the advantages of biodegradable, brain targeting, well-recognized safety profile by drastically reducing drug-related toxicities through reduction of nonspecific biodistribution (11). NLCs consist of an unstructured solid lipid

The use of radioactive elements in medicine is still growing to this day. Many oncologists use it to treat their patients who have cancer. Many cancer patients use this option. They use the radiation to kill off cancer cells. X-ray technicians or radiologists will also use it to administer x-rays to people who may have a broken bone, or need an MRI. The patient is injected with a radioactive material that helps the doctor be able to see inside the body better, whether it be with pictures or ultrasound. Radioactive material is defined as “material that contains radioactivity and thus emits ionizing radiation. It may be material that contains natural radioactivity from the environment or a material that may have been made radioactive.” (The Healthy Physics Society). This happens when someone needs a colonoscopy. They have to drink or are injected with this liquid that helps their organs and all other masses in the body be seen better by the radioactive materials.

Nuclear Medicine is the use of radioisotopes for diagnosis, treatment, and research. Radioactive chemical tracers emit gamma rays which provides diagnostic information about a person's anatomy and the functioning of specific organs. Radioisotopes are also utilizes in treatments of diseases such as cancer. It is estimated that approximately one in two people in Western countries are likely to experience the benefits of nuclear medicine in their lifetime.