Robots can locomote using body motions; not wheels or legs. Natural analogues, such as snakes, although capable of such locomotion, are understood only in a qualitative sense and the detailed mechanics, sensing and control of snake motions are not well understood. Historically, mobile vehicles for terrestrial use have either been wheeled, tracked or legged. Prior art reveals several serpentine ...

Abstract Magnesium chloride hexahydrate crystal (MgCl 2 .6H O) is an intermediate product used to obtain Mg metal from its ores. This work aims produce purified MgCl O crystals natural Egyptian serpentine. Serpentine samples were collected the Eastern Desert in Egypt and prepared for leaching with HCl solutions. Reaction temperature (°C), time (h), solid/liquid ratio (g/mL), acid concentration ...

morning of the 13th November I was hurriedly called in to see him. He had after much coughing and sneezing evacuated a worm-like creature from his nose, and this had been thrown on the floor, where it looked like a small mass of muco-purulent nasal secretion with a streak of blood along it. In due course however it uncoiled itself to a length of about one inch and began to move very slowly. At ...

A long-term hemodialysis patient with a giant intracranial vascular channel, which has been called a giant serpentine aneurysm, is presented. A 50-year-old man with an eight-year history of hemodialysis treatment was admitted because of headache, nausea and double vision. Computed tomographic scans and nuclear magnetic resonance revealed intracranial abnormal shadow. The left vertebral arteriog...

Abstract Carbon nanotube (CNT) nanocomposites have been widely used for electronic devices because of their high conductivity and ease processing. However, these limited functionality rigid intrinsic mechanical properties. In this study, we fabricated a stretchable serpentine structure using CNT nanocomposite with carboxymethyl cellulose binder. For flexible mold, polydimethylsiloxane (PDMS) wa...

The Streptanthus morrisonii (Brassicaceae) complex is a group of six narrowly-distributed obligate serpentine endemic taxa whose habitat is threatened by geothermal development. Isozyme analysis of this little-studied complex supports the delineation of two species, S. morrisonii and S. brachiatus, but is at odds with the treatment of two subspecies based on morphology. These results may be inf...

The flow-field design based on under-rib convection plays an important role in enhancing the performance of polymer electrolyte membrane fuel cells (PEMFCs) because it ensures the uniform distribution of the reacting gas and the facilitation of water. This research focused on developing suitable configurations of the anode and cathode bipolar plates to enhance the fuel cell performance based on...

The Hayabusa2 spacecraft has three framing cameras (ONC-T, ONC-W1, and ONC-W2) for optical navigation to asteroid 1999 JU3. The ONC-T is a telescopic camera with seven band-pass filters in the visible and near-infrared range. These filters are placed on a wheel, which rotates to put a selected filter for different observations, enabling multiband imaging. Previous ground-based observations sugg...

Sample mixing is difficult in microfluidic devices because of laminar flow. Micromixers are designed to ensure the optimal use of miniaturized devices. The present study aims to design a chaotic-advection-based passive micromixer with enhanced mixing efficiency. A serpentine-shaped microchannel with sinusoidal side walls was designed, and three cases, with amplitude to wavelength (A/λ) ratios o...

When a serpentine tape drive is used as a slow random access device, the I/O performance can be substantially improved by clever re-ordering of the I/O requests. This kind of re-ordering relies on a scheduling algorithm and a model of the access time. In this paper, we propose a low-cost access time model for serpentine tape drives, which is not a trivial task due to the complex data layout of ...