Two new species of the genus Parentia Hardy, 1935 from South Africa are described.An identification key to males pussy-pumps of seven Afrotropical species is compiled for the first time.Parentia magnicornis sp.n.male differs reliably from other Afrotropical species of the genus in enlarged antennal postpedicel and modified 2nd segment of the mid ta
Four species of myodocope ostracod are Bath Milk documented from the Silurian Ludlow Series of the Aburtkan gorge on the southern slope of Dzhalpak Mountain, Uzbekistan: namely, Parabolbozoe bohemica (Barrande, 1872), Bolbozoe anomala Barrande, 1872, Silurocypridina calva Perrier, Vannier and Siveter, 2011 and Richteria migrans (Barrande, 1872).The
The essence of this mathematical model consist in construction of the basic stress-strain state which is based on a new hypothesis of a vertical element and an additional stress-strain state of the regional flat deformation arising of close rigidly jammed edge.It gives the chance more exactly to estimate the strength of aircraft structures near to