نتایج جستجو برای: sandpaper
تعداد نتایج: 219 فیلتر نتایج به سال:
The knowledge about aspects related to seed germination are extremely important the propagation of Passiflora species. Considering diversity species and need studies that can elucidate process seeds this study aimed was evaluate methods overcome dormancy in two (P. morifolia P. cincinnata) by pre-germinative treatments as physical scarification, immersion gibberellic acid (GA3) Promalin® (GA4+...
ABSTRACT Ormosia grossa Rudd is an Amazonian species that presents bicolor seeds, allowing its exploration for handicraft and decoration making. This paper aimed to analyze the influence of different methods overcome dormancy on germinative performance seeds. To conduct experiment, following treatments were established: T1= scarification with 80-grit sandpaper water immersion at room temperatur...
dormancy of eastern dodder and african rocket seeds makes the controlof them very difficult in orchards and farms. in order to study the effective factors in dormancy breaking of these two weeds species, a factorialexperiment based on crd with three replications was conducted at the research laboratory of birjand faculty of agriculture in 2008 and 2009. treatments were: control, soaking in sulf...
Wood surface roughness, free energy (SFE), wettability, and bonding quality for water-based acrylic coatings were investigated. The samples tested in this study included Pinus radiata, sylvestris, Larch, Hemp oak, Catalpa tree, Camphor. Sandpaper with grits of 180, 240, 320, 400, 500 was utilized to sand wood surfaces. van OSS-Chaudhury-Good equation (vOCG) used calculate the SFE values. modifi...
The Limited Receptive Area (LIRA) neural classifier is proposed for texture recognition of mechanically treated metal surfaces. It can be used in systems that have to recognize position and orientation of complex work pieces in the task of assembly of micromechanical devices. The performance of the proposed classifier was tested on specially created image database in recognition of four texture...
In automatic surface inspection, one has to solve the problem of detecting small surface defects which locally break the homogeneity of a texture pattern. Textures are generally classified into two major types, structural and statistical [1]. Structural textures are those that are composed of repetitions of some basic texture primitive, such as directional lines, with a deterministic rule of di...
Introduction Diagnosing elemental mercury poisoning requires a high index of clinical suspicion with attention to thorough environmental, social, and family history. Due to its many nonspecific and slowly developing symptoms, the differential diagnosis is extensive and challenging. Diagnosis often requires costly laboratory and radiologic investigation to exclude other disease processes. Case R...
The context of this paper is the design of a kinesthetic interface to virtual environments. Several kinesthetic interfaces have previously been developed. Minsky[ 15lhas developed a device for creating “virtual sandpaper”. A powered joystick interfaced to a real-time computer simulation allows the user to “feel” textured surfaces. The simulation implements textures as a mapping from joystick po...
The Limited Receptive Area (LIRA) neural classifier is proposed for texture recognition of mechanically treated metal surfaces. It may be applied in systems that have to recognize position and orientation of complex work pieces during micromechanical device assembly as well as in surface quality inspection systems. The performance of the proposed classifier was tested on a specially created ima...
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