The hard rock stratum will seriously affect the efficiency of deep-sea drilling and greatly increase cost operations due to its complexity. In ocean operations, design bit is critical. Therefore, core should be able drill in a variety formations, especially stratum, with function reducing need change formation changes improving efficiency. this paper, three different bits were designed accordin...

Earlier investigations in this laboratory demonstrated paired internal transverse arteries and veins associated with the rat cornu Ammonis (CA), mapped the vessels, and suggested segmental distribution and drainage patterns. Further studies of the smaller branches and capillaries were required to resolve the presence or absence of structurally segmented or isolated capillary beds common to vert...

The anatomical and electrophysiological properties of neurons in the stratum lucidum of the CA3 subfield of the hippocampus were examined by using patch-pipette recordings combined with biocytin staining. This method facilitated the analysis of the morphological features and passive and active properties of a recently described class of spiny neurons in the stratum lucidum, as well as aspiny ne...

The adoption of packet-switched technologies in mobile communication systems has enabled the provision of IPbased services to mobile users. Yet, these systems, such as the UMTS network, are unable to meet the stringent delay requirements imposed by the enhanced multimedia services due to the anchor point that introduce into the user’s data path. Moreover, such applications will rely on IP-based...

Kuwait, as most Gulf countries, is suffering from an increasing loss of identity for both the city and its inhabitants. This requires some soul-searching into the deep structure stratum to arrive at mythic images more relevant to the Kuwaiti cultural context. One way of achieving this is through the adoption of the study and analysis of local vernacular built environments as one of the basic me...

Reinhold Dauskardt Stanford University, Professor Materials Sciences and Engineering The stratum corneum (SC) is the outermost layer of the skin. Its process of reneweal is regulated by various mechanisms, including chemical and structural gradients through the SC thickness. In this study, an in vitro mechanics approach for studying the delamination behavior of SC in the direction perpendicular...

CA1 pyramidal cells (PCs) are not homogeneous but rather can be grouped by molecular, morphological, and functional properties. However, less is known about synaptic sources differentiating PCs. Using paired recordings in vitro, two-photon Ca(2+) imaging in vivo, and computational modeling, we found that parvalbumin-expressing basket cells (PVBCs) evoked greater inhibition in CA1 PCs located in...

Skin permeation for the occupational chemicals mainly depends on the Stratum Corneum (SC), which behaves as a barrier against the entrance of any substance applied on it. The hydration state of the SC plays a crucial role for its barrier function and the permeation process, especially for the water-soluble substances. In this work the relationship of the environmental Relative Humidity (RH) and...

We have recorded from single neurons in the retinorecipient layers of the superior colliculus of the cat. We distinguished several functionally distinct groups of collicular neurons on the basis of their velocity response profiles to photic stimuli. The first group was constituted by cells responding only to photic stimuli moving at slow-to-moderate velocities across their receptive fields (pre...

THE NORMAL EXFOLIATION PROCESS Exfoliation occurs naturally as outworn stratum corneum cells detach and are removed from the skin’s surface. Replacement of stratum corneum cells occurs by a self-renewal process as epidermal cells move upward from the basal layer, the stratum basalis, and through the subsequent two layers, the stratum spinosum and stratum granulosum, to reach the stratum corneum...