Indirect evidence suggests that it was possibly bipedal, and that some individuals were about 4'0 tall. The teeth appear to be more apelike than any other hominid. Another fossil is the Australopithecus africanus which was found by Dr. Raymond Dart in 1925 in a limestone quarry in South Africa. Brain size ranged between 420 and 500 cc. Although the teeth and jaws of africanus are much larger than those of humans, they are far more similar to human teeth than to ape teeth.
 investigated the tensile behaviour of short coir fibre reinforced Poly (Butylene Succinate). It was found that tensile modulus of PBS increased with the incorporation of coir fibre since the stress was transferred from matrix to the stiffer fibre. The tensile modulus of composite increased with increase in fibre weight content. Coir/PBS composite with 5 different fibre content showed an improved of 17.9%, 40.3%, 61.9%, 84.4% and 106.6% on comparing with pure PBS. Tensile strength and fracture strain decreased with increase in fibre content.
Although the primitive mammal is the initial... ... middle of paper ... ...cumstances led to the formation of a rather short and broad neck, in addition to the modification of the second pair of incisors of the upper jaw into ivory tusks, although the two rudimentary tusks present in the lower jaw remained diminutive. The physical adaptions adopted by the earliest elephants have led to the evolution of what is now recognised as the modern elephant species. The Phosphatherium, Moeritherium, Phiomia and Primelephas form the evolutionary line of the modern elephant, adapting larger physical structures, such as the skull, bones, limbs, figure and ears. Unfortunately the continuation of the elephant specie is threatened. Humans pose a great threat to the endangered elephant specie and risk the continuation and co-existence of the elephant.
The tetrahedral tilt angle δ declines rapidly during this transition from α to β, as there are increases in the temperature. In addition, it can be seen that the Fe-O-P bridging angles increases during this first-order transition. With this increase in bond distance seen, it results in a greater amount of dynamic disorder in the β phase after the transition at 980K. While in the β phase, there are no significant changes in the bond angle and the distance between the bonds with changes in the temperature. The bond distance of Fe-O remains around 5.16A.
In order to understand the conduction mechanism and the type of polarons responsible for conduction, the variation of AC conductivity as a function of applied frequency is presented in figure 8. Generally in the disordered solids, AC conductivity is directly proportional to the applied frequency. It is reported that the AC conductivity in large polaron hopping decreases with increase in frequency whereas in the small polaron hopping it increases with increasing frequency [30, 31]. Figure 8: Variation of AC conductivity as a function of frequency for Li0.5AlxFe2.5-xO4 (where x=0.0, 0.2, 0.4, 0.6, and 0.8) nano particles. Austin and Mott  discussed the electrical conduction mechanism in terms of the electron and polaron hopping model.
They are relatively smaller, slender, and more agile than other apes. They exhibit many characteristics of primates, including flat faces, enlarged brain sizes, grasping hands and feet, arms longer than legs, no tails, and broad chests. Male gibbons are just under 3 ft. in length and weigh about 15 pounds. Furthermore, the evolution of Homo erectus showed more human examination
The members of the Order Primates, Family Hominidae are considered an endangered species. The Mountain Gorilla (Gorilla beringei beringei) populations have been diminished to areas of the Virunga Mountains of Central Africa that are found in Rwanda and the Democratic Republic of Congo and the Bwindi Impenetrable National Park Uganda. Description and Identification Mountain Gorillas are one of the largest existing primates, second only two its cousin, the Eastern Lowland Gorilla. Males on average grow to weigh 430 pounds and 59 inches tall. Females on the other hand are much smaller compared to males and grow up on average to weigh 220 pounds and 51 inches tall.
Loxodonta africana, more often known as the African elephant, is the largest land animal on Earth, with a shoulder height of 11 feet, a length of 19-24 feet, and a weight of 6 tons (African, 2014). These enormous creatures are also capable of communicating with each other in a unique way. Elephants use infrasound calls to “talk” amongst themselves. Infrasounds are sounds that have frequencies lower than what humans and most other animals are capable of detecting. The scientific discovery of these infrasounds makes researches one step closer to understanding how these gentle giants communicate with one another, even when they are kilometers apart.
As an example of how FePO and PO angles and the length are actually changing as the temperature increases, FePO for the bond length in a tetrahedral bond angle, in a quartz type FePO4 as a structure, as a function of the temperature. As the temperature increase on 294 to 969, it is observed that FePO decrease in the length and subsequently, the angle of FePO2 is also smaller.This results in a change in the unit cell size, and the volume. It is in contrast to PO4, where there is an increase in temperature, resulting in compression, and subsequently the bond angle drops as well. This may be related to the overall tilt
It can be seen from the table that with increase in Cr composition from x=0.0 to 1.0, the value of Seebeck Coefficient increased from -242 to 724 μV/K at 340K. This indicates that more and more p-type carriers are generated with Cr content at lower temperature. Table1. Thermoelectric power data on Co-Cr ferrites Ferrite Composition Seebeck Coefficient (α) (μV/K) at 340K p to n transition temperature Seebeck Coefficient transition temperature Ts (K) Curie Temperature From Loria Technique CoFe2O4 -242 - 730K 740K CoCr0.1Fe1.9O4 285 360K 725K 722K CoCr0.3Fe1.7... ... middle of paper ... ...sition occurs at about 360-400K. Above this temperature range they behave as n-type semiconductors.