Vascular corrosion casting of human heart

Variation in the morphological pattern of coronary arteries and their major branches is an important factor in the assessment and treatment of coronary heart disease. Detailed knowledge of the blood supply of the heart is necessary today because of the wider practice of cardiac surgery, and also for better understanding of the anomalous branches, anastomosis and dominance pattern in circulation caused by coronary vasculature. We utilized 80 human heart specimens and found right dominance in 69 specimens, left dominance in 9 specimens and balanced type of circulation in 2 specimens. We observed anastomosis between the major arteries in arteriogram but in vascular corrosion method we did not found because cast substance interpretation to minor vessels is too difficult. The present study acknowledges about Coronary vascular pattern, circulatory dominance of the arteries and by using the vascular corrosion method

Sex determination & morphometric parameters of human mandible

Goal: The knowledge about the anatomy of the mandible and its variations in age, sex and race will help physicians, surgeons, medico-legal authorities and anthropologists to give correct interpretations for the diagnostic procedures in living.Methods: We collected the human mandible bones (N=80) from the department of Anatomy, SVIMS university and around the Tirupati region to study the morphological and morphometric features by using 22 different parameters.Results: Among 22 parameters Six dominating parameters that possibly explain the nature of the mandible are height of the ramus, body thickness, anthropometric arch width, inter incisor width, mandibular index and mandibular angle are useful to determine the unknown sex of the mandible upto an extent of 75.2% in south Indian population. The incidence of the above mentioned sex determination parameters considered together and treated statistically.Conclusion: The present study reveals that the mandible of unknown gender can be sexed to the extent of 75% accuracy by six dominating parameters and not to consider these for complete sex determination of the mandible bone in osteometric studies

Variations in quiet sun radiation at centimetre wavelengths over 21st and 22nd solar cycles

30-34The variability of the total solar radio flux at five wavelengths, namely 3 cm, 8 cm, 10.7 cm, 15 cm and 30 cm have been studied over 21st and 22nd solar cycles (1975-1991). The background component at these wavelengths has been estimated by eliminating the contribution of active regions on the measured total radio flux. This radiation is generally caused by thermal emission of the solar atmosphere and originated mostly from the chromosphere. The study of quiet sun radiation is of considerable importance since it helps to obtain the information on the electron density and temperature for different layers of the solar atmosphere. The present results indicate that at centimetric wavelengths the ‘quiet’ sun flux density and temperatures at the maximum activity are higher than the corresponding values at the minimum activity

Effect of electrojet on low latitude radio wave scintillations

274-276Amplitude scintillation measurements recorded at Hyderabad (lat. 17.4°N, long. 78.4°E) at 136.1123 MHz from the geostationary satellite ETS-II have been utilized to understand the effect of electrojet on low latitude radio wave scintillations. It is seen that the scintillation activity is well correlated with the electrojet strength both in high and low solar activity periods with a correlation coefficient of 0.97, indicating that the low latitude scintillations are influenced by the changes in the equatorial electrojet current

Medicine Science 2013;2(4):792-8 Foramen magnum-morphometry Original Investigation Morphometric Study on Foramen Magnum of Human Skulls

Abstract We utilized 100 human skulls to study the morphology and morphometric parameters of the foramen magnum in south Indian population

Midshaft diameter of humerus and its accuracy in sex determination of south Indian population

Background: Humerus is one of the long bones generally favoured in osteometric studies as it appears to yield highest level of classification accuracy in sex determination. Aim: To study the midshaft diameter of humerus and its accuracy factor in sex determination. Methods: A total of 100 (Male - 72, Female - 28) dry human humeri were collected from the Department of Anatomy as well as from the under graduate students of Santhiram Medical College, Nandyal. The maximum midshaft diameter of humerus was measured from absolute greatest diameter without regard to the vertical or transverse plane. The minimum midshaft diameter of humerus was measured from absolute least diameter in the middle without regard to any plane or maximum diameter Results: The mean maximum mid shaft diameter of humerus in male bones was 1.953±0.027 and in female bones was 1.75±0.030. The mean minimum midshaft diameter of humerus in male was 1.657±0.0211 and in female was 1.485±0.026 in the present study Conclusion: The mid shaft diameter can be considered as one of the sex determinations factors due to its higher accuracy in males than females with other predictive variables of humerus

A measurement of ionospheric irregularity from radio star scintillations

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