نتایج جستجو برای: dynamic envelope
تعداد نتایج: 443512 فیلتر نتایج به سال:
The problem of actively stable bipedal walking on small feet continues to challenge robotic engineers, controller designers,and machine learning theorists. Preliminary results with a real 10-link biped, TarBaby, are presented. This machine is designed to test new ideas in bipedal locomotion, including online tuning of key settings in a dynamic motion generator and ultimately automatic expansion...
In most patients the existing occlusal scheme will be functional, comfortable and cosmetic; and so if a tooth or teeth need to be restored, the most appropriate way to provide the restoration(s) would be to adopt a 'conformative' approach: that is to provide treatment within the existing envelope of static and dynamic occlusal relationships. There will, however, be situations where the conforma...
The safety and operational flight envelope of helicopters carrying externally slung loads, as illustrated in Figure 1, in support of regular Army/Special Air Service (SAS) operations, is limited and sometimes seriously hindered by stability and control problems. Several incidences have been reported by the Australian Army in which possible aerodynamic excitation or dynamic instability of the sl...
The endoplasmic reticulum (ER) of animal cells is a single, dynamic, and continuous membrane network of interconnected cisternae and tubules spread out throughout the cytosol in direct contact with the nuclear envelope. During mitosis, the nuclear envelope undergoes a major rearrangement, as it rapidly partitions its membrane-bound contents into the ER. It is therefore of great interest to dete...
Dynamic interactions between membrane-bound organelles and the microtubule cytoskeleton are crucial to establish, maintain, and remodel the internal organization of cells throughout the cell cycle. However, the molecular nature of these interactions remains poorly understood. We performed a biochemical screen for microtubule-membrane linkers and identified REEP4, a previously uncharacterized en...
The nuclear pore complex (NPC), embedded in the nuclear envelope, is a large, dynamic molecular assembly that facilitates exchange of macromolecules between the nucleus and the cytoplasm. The yeast NPC is an eightfold symmetric annular structure composed of ~456 polypeptide chains contributed by ~30 distinct proteins termed nucleoporins. Nup116, identified only in fungi, plays a central role in...
One view of rhythm, not conventionally adopted in speech research, is that it constitutes an affordance for movement. We test this view in an experimental situation in which speakers speak in synchrony with one another. After first establishing that speakers can synchronize with specific recordings, we present two experiments in which the information in the model speech is systematically reduce...
In this review we summarize the structure and function of the nuclear pore complex (NPC). Special emphasis is put on recent findings which reveal the NPC as a dynamic structure in the context of cellular events like nucleocytoplasmic transport, cell division and differentiation, stress response and apoptosis. Evidence for the involvement of nucleoporins in transcription and oncogenesis is discu...
Chloroplast function is orchestrated by the organelle's intricate architecture. By combining cryo-focused ion beam milling of vitreous Chlamydomonas cells with cryo-electron tomography, we acquired three-dimensional structures of the chloroplast in its native state within the cell. Chloroplast envelope inner membrane invaginations were frequently found in close association with thylakoid tips, ...
The cell surface is the essential interface between a bacterium and its surroundings. Composed primarily of molecules that are not directly genetically encoded, this highly dynamic structure accommodates the basic cellular processes of growth and division as well as the transport of molecules between the cytoplasm and the extracellular milieu. In this review, we describe aspects of bacterial gr...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید