The amf gene cluster was previously identified as a regulator for the onset of aerial-mycelium formation in Streptomyces griseus. The nucleotide sequences of amf and its counterparts in other species revealed a conserved gene organization consisting of five open reading frames. A nonsense mutation in amfS, encoding a 43-amino-acid peptide, caused significant blocking of aerial-mycelium formatio...

Mechanisms of aerial righting in juvenile Chukar Partridge (Alectoris chukar) were studied from hatching through 14 days-post-hatching (dph). Asymmetric movements of the wings were used from 1–8 dph to effect progressively more successful righting behaviour via body roll. Following 8 dph, wing motions transitioned to bilaterally symmetric flapping that yielded aerial righting via nose-down pitc...

lated from a mixture of soils plated on yeast starch agar (yeast extract 0.5 %, soluble starch 1.0%, Difco agar 1.5%, pH 7.0) containing 25 jug/ml everninomicin. On the descriptive media of Shirling and Gottlieb5), and Waksman6), after 21 days at 30°C, the culture forms beige to tan vegetative mycelia pigments, gray-white to pink aerial mycelia and a faint yellow-brown diffusible pigment. Upon ...

A complete survey of La Réunion Island showed that, in 40- to 50-year-old Casuarina cunninghamiana plantations located in the northeast at an altitude above 400 m, some trees bore aerial nodules as high as 6 to 7 m up the trunk. The nodules exhibited a significant specific acetylene reduction by the ARA method (0.77 mumol of C(2)H(4) per h/g [dry weight] of nodule) at the time of sampling (June...

Automatic vehicle detection from aerial images is emerging due to the strong demand of large-area traffic monitoring. In this paper, we present a novel framework for automatic vehicle detection from the aerial images. Through superpixel segmentation, we first segment the aerial images into homo-geneous patches, which consist of the basic units during the detection to improve efficiency. By intr...

This paper presents a cooperative control strategy for a team of aerial robotic vehicles to establish wireless airborne communication networks between distributed heterogeneous vehicles. Each aerial robot serves as a flying mobile sensor performing a reconfigurable communication relay node which enabls communication networks with static or slow-moving nodes on gorund or ocean. For distributed o...

This paper describes a new second-generation-type lossy image compression scheme using wavelets for aerial ortho images. For map applications where some losses are allowed, aerial ortho images present a possibility of having a very high compression ratio, because they are natural images with many uniform (coherent) subregions. However classical compression schemes such as the joint-photograph e...

Digital aerial triangulation is increasingly being carried out in photogrammetric production environments as greater efficiency is being attained through increased automation. In this paper, a customised and modified approach to digital aerial triangulation using the Helava Automated Triangulation System (HATS) is introduced. HATS is used as the basic triangulation measurement tool for the aeri...

This work presents a collaborative unmanned aerial and ground vehicle system which utilizes the aerial vehicle's overhead view to inform the ground vehicle's path planning in real time. The aerial vehicle acquires imagery which is assembled into a orthomosaic and then classified. These terrain classes are used to estimate relative navigation costs for the ground vehicle so energy-efficient path...

Aerial Imaging is mainly done with small planes from several kilometres altitude. A small unmanned quadcopter (a type of helicopter with four rotors) is an alternative airborne platform, which allows fast aerial imaging of small areas with a higher level of detail and lower cost. It can be used for updates of GI-Systems after natural phenomena, e.g. update of the tree population of areas affect...