... problems. Aromatherapy also acts on the central nervous system, relieving depression and anxiety, reducing stress, relaxing, uplifting, sedating or stimulating, restoring both physical and emotional well-being. Although Aromatherapy is consider to be a new and alternative foram of medicine in the western world, however it has been practiced for thousands of years in the eastern world. A lot of interest in Aromatherapy stems from its use as an 'alternative medicine' or even a 'complementary medicine'. It is certainly true that before pharmaceutical companies brought a vast array of modern drugs to the market, people had to make do with many 'home remedies' - ofte ...
... the current tests are time consuming and technically difficult to do, are restricted to women over 35 and those who have a family history of chromosomal abnormalities. Prenatal tests using Willard's probes would be much simpler and faster to perform and could be available to all pregnant women who wish to take advantage of the technology. Current prenatal testing involves growing fetal cells in vitro and examining them, over one or two months, to see if there are two copies of a particular chromosome, which is normal, or one or three, which is abnormal. A test using Willard's probes would require only a few cells and a few days to detect abnormalities. "I do ...
... large task and with Russia's worsening economy, smuggling of nuclear material will continue. During the Cold War the security of Soviet nuclear weapons and missile materials was based on a highly centralized military system and operating within a strong political authority. The workers back then where well disciplined and each individual new his/her role. The workers were among the best treated and loyal to the Russian military. They are now suffering hardships and are forced to scavenge anything to pay for their food, rent and social services. A new trend is already occurring with some of the workers . There are those that will seek employment out of the ...
... it susceptible to a coordinate covalent bond with a hydrogen ion. Also, the carboxylic group is a Lewis acidic because it is able to donate a hydrogen ion (Kotz et al., 1996). Other forms of amino acids also exist. Amino acids may exists as acidic or basic salts. For example, if the glycine reacted with HCl, the resulting amino acid would be glycine hydrochloride (see fig. 2). Glycine hydrochloride is an example of an acidic salt form of the amino acid. Likewise, if NaOH were added, the resulting amino acid would be sodium glycinate (see fig. 3), an example of a basic salt form. Fig. 2 Fig. 3 Due to the nature of amino acids, a titration curve can be em ...
... in beds of gold-bearing sand. Miners call it white gold. Native platinum contains from 60 to 85 percent pure platinum. The small, irregular grains that contain the ore also contain other rare metals, such as iridium, osmium, palladium, rhodium, and ruthenium. The grains also contain small amounts of iron, copper, chromium, and titanium. A large nugget of platinum will be found only on occasion, like in 1843, a lump weighing over 21 pounds was found in Russia. Russia produces the worlds largest share of platinum-group metals. Other important sources of platinum are located in the Transvaal province in South Africa and in Sudbury, Ont. Colombia and the United ...
... This code directs the synthesis of proteins at the cellular level. It is written in units called codons, each of which specifies a particular amino acid. (Proteins are composed of amino acids.) A codon consists of a sequence of three bases--for example, GAG or TCA. The four bases can be assembled into 64 possible codons. Because proteins are built from only 20 amino acids, most amino acids are specified by more than one codon. occur when one base is substituted for another or when one or more bases are inserted or deleted from a gene. Substitution affect only one codon, and in most cases the effect is minimal. One reason is the redundancy of the genetic code ...
... and begins to lay eggs. Some of the first batch are eaten by the queen for nourishment. When the surviving eggs hatch they become like larvae. After a few weeks each larva spins a cocoon around itself and pupates. In a few more weeks, adult workers emerge. It is their job to hunt for food and make the nest bigger. More workers will develop and the colony gets very organized. The new workers will completely take over as caretakers of the eggs, larvae, and pupae. Now the queens only duty is to lay more and more eggs, thousands of them in her lifetime. Many wingless workers develop and help to enlarge the nest into an intricate network of tunnels and ...
... amino acids. These in turn got hooked together to form simple proteins, the "building blocks" of life. At some point these proteins happened to get connected in just the right way, and a threshold was crossed: the proteins started reproducing themselves, and simple life was "born". During uncounted eons, this simple life gradually became more and more complex as chance modifications of the original proteins combined with external conditions of moisture, temperature, food supply, etc., to eventually produce all the varied and complex life forms inhabiting first the oceans, then the land, and finally the air, that we see today. Homo sapiens is seen as t ...
... have developed a different approach to the problem of gas exchange, as water is not present in all of the terrestrial environment. Terrestrial vertebrates have developed lungs to solve this problem. Air enters through the nasal passages, or the mouth, passes through the trachea, then branches off at the two bronchi, and goes through many branching passages called bronchioles, which end in alveoli. Alveoli are sack-like structures where the circulatory system meets the respiratory system. Since terrestrial vertebrates do not live in water, they need to develop a means of conserving water. One way we do this is through our excretions. Nitrogen forms a major ...
... of the overhead sun. These changes in the pressure systems over Asia generate the unique Asian monsoon circulation which prevails over China throughout the year. Surface Pressure Field and Winds: For any fluid to initiate movements, pressure gradient must exists. Therefore, for a close understanding of the circulation system that operates over China, we should start from discussing the seasonal pressure distribution at sea-level over the Asia-Pacific region, which is the driving force for the air movements in China. Most clearly to be seen, the largest difference in the atmospheric pressure occurs between winter and summer, whereby January and July can be consi ...
