Retinal exudates are typically manifested as spatially random yellow/white patches of varying sizes and shapes. They are a characteristic feature of retinal diseases such as diabetic maculopathy. An automatic method for the detection of exudate regions is introduced comprising image colour normalisation, enhancing the contrast between the objects and background, segmenting the colour retinal im...

In the world, Diabetic Retinopathy is the leading cause of vision loss. Early symptoms of this disease are exudates, so early diagnosis and treatment at right time is very important to prevent blindness. In this paper the Active contour model (ACM) is implemented to detect exudates and it is used to obtain accurate borders of lesions, and then the local features of detected exudates are extract...

Diabetic Retinopathy caused by leakage of blood or fluid from the retinal blood vessels and it will damage the retina. Yellow flecks are called hard exudates. Exudates are the lipid residues of serous leakage from damaged capillaries. Design new wavelet filter for extraction of exudates using fundus images. This algorithm is tested on online databases such as, STARE, DRIVE, Diarect DB0, Diarect...

During a survey of methylotrophic yeasts in natural habitats in Hungary, the yeast community associated with the exudates of white poplar (Populus alba) was found to be unique among the tree exudates hitherto investigated. Nineteen methanol-assimilating yeast strains representing an undescribed ascomycetous species were isolated from tree exudates of P. alba collected at different locations in ...

We report optical coherence tomography (OCT) findings in a 48 years old man with Leber’s idiopathic stellate neuroretinitis. Ophthalmoscopy of the right eye revealed serous retinal detachment (SRD) and marked hard exudates in the papillomacular region. Imaging with OCT revealed an accumulation of fluid in the outer nuclear layer (ONL), the outer plexiform layer (OPL) and the inner nuclear layer...

Rhizobium spp. show chemotaxis to plant root exudates. Both legumes and non-legume root exudates attract the different rhizobia studied. However, the bacteria show a differential response in that they are attracted to the root exudates of some plants and show no attraction toward others. An example of negative chemotaxis was also observed. The trefoil strain of Rhizobium shows chemotaxis which ...

Meloidogyne incognita eggs were hatched in soil sterilized by gamma kradiation and wetted with root exudates from alfalfa plants in different stages of development and subjected to various levels of clipping. Carbohydrate components of the exudates were identified by gas chromatography-mass spectrometry. Although significant stimulation of hatch was detected in exudates of seedling and flowerin...

Diabetic Retinopathy (DR) is a chronic progressive disease of the retinal microvasculature which is among the major causes of vision loss in the world. The diagnosis of DR is based on the detection of retinal lesions such as microaneurysms, exudates and drusen in retinal images acquired by a fundus camera. However, bright lesions such as exudates and drusen share similar appearances while being...

Biogeochemical processes in the rhizosphere can significantly alter interactions between contaminants and soil minerals. In this study, several strains of bacteria that exude aluminum (Al)-chelating compounds were isolated from the rhizosphere of crested wheatgrass (Agropyron desertorum) collected from the Idaho National Laboratory (INL). We examined the effects of exudates from bacteria in the...