We examine the approach used and the results presented in a recent publication (Can. J. Phys. 76, 295 (1998)) in which (i) a noninertial reference frame is used to examine the motion of a curling rock, and (ii) the lateral motion of a curling rock is attributed to left–right asymmetry in the force acting on the rock. We point out the important differences between describing the motion in an ine...

BACKGROUND Legumes are unique in their ability to establish symbiotic interaction with rhizobacteria from Rhizobium genus, which provide them with available nitrogen. Nodulation factors (NFs) produced by Rhizobium initiate legume root hair deformation and curling that entrap the bacteria, and allow it to grow inside the plant. In contrast, legumes and non-legumes activate defense responses when...

Identification of mutants with impairments in auxin biosynthesis and dynamics by forward genetic screening is hindered by the complexity, redundancy and necessity of the pathways involved. Furthermore, although a few auxin-deficient mutants have been recently identified by screening for altered responses to shade, ethylene, N-1-naphthylphthalamic acid (NPA) or cytokinin (CK), there is still a l...

The present study examined the technical characteristics of sliding performance from push-off until stone release in curling delivery. Five elite performance level curlers (> 7 years experience) and five subelite level curlers (< 3 years experience) were analyzed during the action of delivery of a curling stone. The joint angles, angular velocities, and moments of the body center of mass (COM) ...

Two new eriophyid mite species associated with Clematis terniflora var. mandshurica, namely Aculops jilinensissp. n. and Phyllocoptes ternifloressp. n., are described. Both species infest the tender leaves of host plants, inducing severe curling and blistering.

The culminating step of the intraerythrocytic development of Plasmodium falciparum, the causative agent of malaria, is the spectacular release of multiple invasive merozoites on rupture of the infected erythrocyte membrane. This work reports for the first time that the whole process, taking place in time scales as short as 400 milliseconds, is the result of an elastic instability of the infecte...

Abstract Pepper vein yellows viruses (PeVYV) are phloem-restricted in the genus Polerovirus , family Luteoviridae . Typical viral symptoms of PeVYV including interveinal yellowing leaves and upward leaf curling were observed pod pepper plants ( Capsicum frutescens ) growing Wenshan city, Yunnan province, China. The complete genome sequence a virus from sample these was determined by next-genera...

Liquids are complex consonants that employ multiple gestures of the tongue in order to achieve specific tongue shapes. In the case of the lateral liquid /l/, that specific shape involves lowering and curling of the tongue along the blade. Many models of speech treat /l/ simply as a combination of tongue tip closure and tongue body retraction gestures, with tongue shaping receiving little attent...

Temperature sensitive curling is commonly observed in MEMS structures fabricated using a standard CMOS process. In this paper, a macromodel for vertical and lateral curling effects is derived by extending thermal multimorph theory for cantilever beams. Stresses induced by temperature change are lumped to form equivalent force and moment sources at the two ends of a beam. The macromodel is added...