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has found application in establishing ethnic differences (Harlich et al.,
2002). The plantar Arch pattern dermatoglyhics of the Hausa ethnic group of
Nigeria has not been established, and a lot of work had been done in southern
Nigeria. This work attempts to look into the plantar arch patterns of the
Hausas in Northern Nigeria. A cross-sectional survey of 357 subjects was
collected from persons who were truly of the Hausa tribe in Nigeria. 222 of the
subjects were males while 135 were females. There was a significant difference
in the plantar arch pattern on both sexes as confirmed by the chi-square test.
There were differences on both feet. The percentage frequency of the arch
pattern on the toes was greatest on the females and on
the right toe (63%). The frequency was least on females (9.9%). The frequencies
were greatest on the right toes of both sexes.
The notion of a G-symmetric space is introduced and
the common fixed points for some pairs of occasionally weakly compatible maps
satisfying some contractive conditions in a G-symmetric space are proved. The
results extend and improve some results in literature.
In this paper we are presenting observations, data and some conclusions regarding the water turbidity and transparency of the aquatic ecosystem of Butrinti Lake in southern Albania. Located amidst a major tourist attraction area, Butrinti Lake is fed by fresh waters from surrounding areas and discharges into Ionian Sea. Although development is preset in the area, it is still minor as part of the area is a National Park. Turbidity, as an optical property which describes the cloudiness of the water, is a measure of the degree to which the water becomes less transparent due to the presence of suspended particulates, including sediments and phytoplankton. The water turbidity parameters were measured every two weeks over a year, monitoring three selected stations in this water ecosystem. Turbidity of water in such ecosystems is measured in FTU (Formazin Turbidity Units) using a portable turbid meter (in our case type HANNA HI 93703-11), which measures the intensity of light scattered at 90 degrees, as a beam of light passes through a water sample. In addition, turbidity is evaluated using a Secchi disk. The depth (Secchi depth) until the disk can be no longer seen by the observer is recorded as a measure of the transparency of the water (inversely related to turbidity). The Secchi disk has the advantages of integrating turbidity over depth (where variable turbidity layers are present). The relationship between the depth of the viewing disk and the turbidity can be characterized by an inverse curvilinear one. The defined trend line can be expressed by the same curve related to the data of Butrinti Lake. An R2 Value of 0.85 was calculated for the above equation. Variations were observed on turbidity level of the selected stations in this ecosystem. These differences on the turbidity values of selected stations of water body can be explained by the communications sea-lagoon, fresh water supply as well as by the pollution due to human activity near a certain