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Nifedipine (NIF), a 1,4-dihydropyridine calcium channel antagonist, undergoes photo-degradation to dehydro-nifedipine (DNIF) upon exposure to ultraviolet (UV) light and to the nitroso analogue of dehydro-nifedipine (NDNIF) when exposed to sunlight or some kinds of artificial lights. NIF photo-degradation products do not contribute to clinical activity, thus prevention of photo-degradation of NI...

Monitoring the malfunction of solar cells (for instance, 156 mm by mm) caused soil debris requires a very low flight altitude when taking aerial photos, utilizing autopilot function unmanned vehicle (UAV). The can only operate at certain level that guarantee collision avoidance for obstacles power lines, trees, buildings) adjacent to place where panel is installed. For this reason, photos taken...

Accurate maps of subsurface tile drainage lines are needed for agronomic and environmental research studies the maintenance current systems. In this study, at Purdue University Agronomy Center Research Education near West Lafayette, Indiana were located using a combination visual aerial photo interpretation, expert knowledge, paper construction drawings. The mapping accuracy was assessed 27 loc...

Pose estimation, which determines the position and the attitude of the camera, is a prerequisite for a variety of photogrammetric tasks such as image matching, surface reconstruction, ortho-photo generation, and object recognition. As digital imagery is becoming more popular in photogrammetric applications, features other than points are increasingly employed in pose estimation. For frame image...

By applying the latest developments occurring in photogrammetry to the map production systems, important reductions in map production costs are obtained. For instance, by starting to use digital cameras and GPS/IMU systems in taking aerial photographs and in aerial triangulation, there is an opportunity of reducing the number of ground control points that must be established due to map producti...

This article is focused on the use of photography to characterize land-cover and land-use changes in a 7.59 km2 study area centered Hotel do Garbe, village Armação de Pêra, Algarve, Portugal. Orthorectified vertical aerial, oblique aerial ground-level photographs were main data sources required carry out analysis. In preliminary approach, conventional research design was adopted. Based availabl...

We propose a unified framework to study the walk problem in a polygonal area by two collaborative guards. A walk is conducted by the two mobile guards on the area’s boundary. They start at an initial boundary point, move along the boundary, and may possibly meet together again at an ending boundary point. It is required that the two guards maintain their mutual visibility at all times. Dependin...

A review of methods for volumetric scene reconstruction from multiple views is presented. Occupancy descriptions of the voxels in a scene volume are constructed using shape-from-silhouette techniques for binary images, and shapefrom-photo-consistency combined with visibility testing for color images.