740 research outputs found
Object identification and characterization with hyperspectral imagery to identify structure and function of Natura 2000 habitats
Habitat monitoring of designated areas under the EU Habitats Directive requires every 6 years information on area, range, structure and function for the protected (Annex I) habitat types. First results from studies on heathland areas in Belgium and the Netherlands show that hyperspectral imagery can be an important source of information to assist the evaluation of the habitat conservation status. Hyperspectral imagery can provide continuous maps of habitat quality indicators (e.g., life forms or structure types, management activities, grass, shrub and tree encroachment) at the pixel level. At the same time, terrain managers, nature conservation agencies and national authorities responsible for the reporting to the EU are not directly interested in pixels, but rather in information at the level of vegetation patches, groups of patches or the protected site as a whole. Such local level information is needed for management purposes, e.g., exact location of patches of habitat types and the sizes and quality of these patches within a protected site. Site complexity determines not only the classification success of remote sensing imagery, but influences also the results of aggregation of information from the pixel to the site level. For all these reasons, it is important to identify and characterize the vegetation patches. This paper focuses on the use of segmentation techniques to identify relevant vegetation patches in combination with spectral mixture analysis of hyperspectral imagery from the Airborne Hyperspectral Scanner (AHS). Comparison with traditional vegetation maps shows that the habitat or vegetation patches can be identified by segmentation of hyperspectral imagery. This paper shows that spectral mixture analysis in combination with segmentation techniques on hyperspectral imagery can provide useful information on processes such as grass encroachment that determine the conservation status of Natura 2000 heathland areas to a large extent. A limitation is that both advanced remote sensing approaches and traditional field based vegetation surveys seem to cause over and underestimations of grass encroachment for specific categories, but the first provides a better basis for monitoring if specific species are not directly considered
An object-based approach to quantity and quality assessment of heathland habitats in the framework of natura 2000 using hyperspectral airborne ahs images
Remobilisation features and structural control on ore grade distribution at the Konkola stratiform Cu-Co ore deposit, Zambia
The Konkola deposit is a high grade stratiform CuβCo ore deposit in the Central African Copperbelt in Zambia. Economic mineralisation is confined to the Ore Shale formation, part of the Neoproterozoic metasedimentary rocks of the Katanga Supergroup. Petrographic study reveals that the copperβcobalt ore minerals are disseminated within the host rock, sometimes concentrated along bedding planes, often associated with dolomitic bands or clustered in cemented lenses and in layer-parallel and irregular veins. The hypogene sulphide mineralogy consists predominantly of chalcopyrite, bornite and chalcocite. Based upon relationships with metamorphic biotite, vein sulphides and most of the sulphides in cemented lenses were precipitated during or after biotite zone greenschist facies metamorphism. New Ξ΄34S values of sulphides from the Konkola deposit are presented. The sulphur isotope values range from β8.7β° to +1.4β° V-CDT for chalcopyrite from all mineralising phases and from β4.4β° to +2.0β° V-CDT for secondary chalcocite. Similarities in Ξ΄34S for sulphides from different vein generations, earlier sulphides and secondary chalcocite can be explained by (re)mobilisation of S from earlier formed sulphide phases, an interpretation strongly supported by the petrographic evidence. Deep supergene enrichment and leaching occurs up to a km in depth, predominantly in the form of secondary chalcocite, goethite and malachite and is often associated with zones of high permeability. Detailed distribution maps of total copper and total cobalt contents of the Ore Shale formation show a close relationship between structural features and higher copper and lower cobalt contents, relative to other areas of the mine. Structural features include the Kirilabombwe anticline and fault zones along the axial plane and two fault zones in the southern limb of the anticline. Cobalt and copper behave differently in relation to these structural features. These structures are interpreted to have played a significant role in (re)mobilisation and concentration of the metals, in agreement with observations made elsewhere in the Zambian Copperbelt
Π’ΡΠ΅Π½Π΄ΡΠ΅ΡΡΡΠ½Π³ ΡΠΊ ΠΊΠ»ΡΡΠΎΠ²ΠΈΠΉ ΡΠ°ΠΊΡΠΎΡ ΡΠΏΡΠ°Π²Π»ΡΠ½Π½Ρ ΡΠ½Π½ΠΎΠ²Π°ΡΡΠΉΠ½ΠΈΠΌΠΈ ΡΠΈΠ·ΠΈΠΊΠ°ΠΌΠΈ ΡΠ½Π΄ΡΡΡΡΡΡ ΠΌΠΎΠ΄ΠΈ
ΠΠ½Π΄ΡΡΡΡΡΡ ΠΌΠΎΠ΄ΠΈ Π½ΠΎΠ²ΠΎΠ³ΠΎ ΡΠΈΡΡΡΠΎΡΡΡΡΡ ΠΏΠ΅ΡΠ΅ΡΠ²ΠΎΡΠΈΠ»Π°ΡΡ Π² Π±Π°Π³Π°ΡΠΎΠΌΡΠ»ΡΠΉΠΎΠ½Π½ΠΈΠΉ ΡΠ΅ΠΊΡΠΎΡ Π΅ΠΊΠΎΠ½ΠΎΠΌΡΠΊΠΈ, Ρ ΠΊΠΎΡΡΠΎΠΌΡ ΡΠ½Π½ΠΎΠ²Π°ΡΡΠΉΠ½Π° Π΄ΡΡΠ»ΡΠ½ΡΡΡΡ Π³ΡΠ°Ρ ΠΊΠ»ΡΡΠΎΠ²Ρ ΡΠΎΠ»Ρ. ΠΠ½Π½ΠΎΠ²Π°ΡΡΡ Π² Π΄ΠΈΠ·Π°ΠΉΠ½Ρ ΡΡΡΠ°ΡΠ½ΠΎΠ³ΠΎ ΠΊΠΎΡΡΡΠΌΠ° Π· ΡΠ½ΡΡΡΡΠΌΠ΅Π½ΡΠ° Π²Π΄ΠΎΡΠΊΠΎΠ½Π°Π»ΡΠ²Π°Π½Π½Ρ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊ ΠΎΠ±βΡΠΊΡΠ° ΠΏΠ΅ΡΠ΅ΡΠ²ΠΎΡΡΡΡΡΡΡ Π² ΠΎΠ΄Π½Ρ Π· ΠΎΡΠ½ΠΎΠ²Π½ΠΈΡ
ΠΉΠΎΠ³ΠΎ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊ, ΡΠΎΠΌΡ ΡΠ΅ΡΠ½-ΠΏΡΠΎΠ΅ΠΊΡΠΈ Ρ ΡΠ½Π½ΠΎΠ²Π°ΡΡΠΉΠ½ΠΈΠΌΠΈ Π·Π° ΡΠ²ΠΎΡΡ ΠΏΡΠΈΡΠΎΠ΄ΠΎΡ [2]
Π‘ΠΈΡΡΠ΅ΠΌΠ° Π°Π²ΡΠΎΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΡΠΏΡΠ°Π²Π»Π΅Π½ΠΈΡ Π΄Π²ΠΈΠΆΠ΅Π½ΠΈΠ΅ΠΌ Π½Π΅ΠΎΠ±ΠΈΡΠ°Π΅ΠΌΠΎΠ³ΠΎ ΠΏΠΎΠ΄Π²ΠΎΠ΄Π½ΠΎΠ³ΠΎ Π°ΠΏΠΏΠ°ΡΠ°ΡΠ° Π² ΡΡΠ»ΠΎΠ²ΠΈΡΡ ΠΈΠ½ΡΠ΅ΡΠ²Π°Π»ΡΠ½ΠΎΠΉ Π½Π΅ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½Π½ΠΎΡΡΠΈ Π΅Π³ΠΎ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠΎΠ²
ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΏΠΎΡΠ²ΡΡΠ΅Π½ΠΎ ΡΠ°Π·ΡΠ°Π±ΠΎΡΠΊΠ΅ ΠΌΠ°ΡΠ΅ΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠ΅Π½ΠΈΡ Π΄Π»Ρ ΡΠΈΠ½ΡΠ΅Π·Π° ΡΠΈΡΡΠ΅ΠΌΠ° Π°Π²ΡΠΎΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΡΠΏΡΠ°Π²Π»Π΅Π½ΠΈΡ Π΄Π²ΠΈΠΆΠ΅Π½ΠΈΠ΅ΠΌ Π½Π΅ΠΎΠ±ΠΈΡΠ°Π΅ΠΌΡΡ
ΠΏΠΎΠ΄Π²ΠΎΠ΄Π½ΡΡ
Π°ΠΏΠΏΠ°ΡΠ°ΡΠΎΠ² Π² ΡΡΠ»ΠΎΠ²ΠΈΡΡ
ΠΈΠ½ΡΠ΅ΡΠ²Π°Π»ΡΠ½ΠΎΠΉ Π½Π΅ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½Π½ΠΎΡΡΠΈ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠΎΠ² ΡΠ°ΠΌΠΎΠ³ΠΎ Π°ΠΏΠΏΠ°ΡΠ°ΡΠ° ΠΈ ΠΎΠΊΡΡΠΆΠ°ΡΡΠ΅ΠΉ Π΅Π³ΠΎ Π²ΠΎΠ΄Π½ΠΎΠΉ ΡΡΠ΅Π΄Ρ.The research is dedicated to a problem of synthesizing motion control systems for unmanned underwater vehicles considering parametric uncertainty of water environment and vehicle itself
Π Π°Π·ΡΠ°Π±ΠΎΡΠΊΠ° Π»Π°Π±ΠΎΡΠ°ΡΠΎΡΠ½ΠΎΠ³ΠΎ ΡΡΠ΅Π½Π΄Π°-ΠΌΠ°ΠΊΠ΅ΡΠ° Π°Π²ΡΠΎΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠΈΡΡΠ΅ΠΌΡ ΡΠ΅Π³ΡΠ»ΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΡΠΈΡΡΠ΅ΠΌΡ ΠΎΡΠΎΠΏΠ»Π΅Π½ΠΈΡ Π΄Π²ΡΡ ΡΡΠ°ΠΆΠ½ΠΎΠ³ΠΎ Π·Π΄Π°Π½ΠΈΡ
Π¦Π΅Π»Ρ ΡΠ°Π±ΠΎΡΡ β ΡΠΎΠ·Π΄Π°Π½ΠΈΠ΅ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠ° ΠΏΡΠΎΠ΅ΠΊΡΠ½ΠΎΠΉ ΠΈ ΠΊΠΎΠ½ΡΡΡΡΠΊΡΠΎΡΡΠΊΠΎΠΉ Π΄ΠΎΠΊΡΠΌΠ΅Π½ΡΠ°ΡΠΈΠΈ Π½Π° ΡΠ°Π·ΡΠ°Π±Π°ΡΡΠ²Π°Π΅ΠΌΡΠΉ Π»Π°Π±ΠΎΡΠ°ΡΠΎΡΠ½ΡΠΉ ΡΡΠ΅Π½Π΄-ΠΌΠ°ΠΊΠ΅Ρ Π°Π²ΡΠΎΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠΈΡΡΠ΅ΠΌΡ ΡΠ΅Π³ΡΠ»ΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΡΠΈΡΡΠ΅ΠΌΡ ΠΎΡΠΎΠΏΠ»Π΅Π½ΠΈΡ Π΄Π²ΡΡ
ΡΡΠ°ΠΆΠ½ΠΎΠ³ΠΎ Π·Π΄Π°Π½ΠΈΡ, ΠΏΠΎΠ·Π²ΠΎΠ»ΡΡΡΠΈΠΉ ΠΎΠ±ΡΡΠ°ΡΡ ΡΡΡΠ΄Π΅Π½ΡΠΎΠ² Π² ΠΎΠ±Π»Π°ΡΡΠΈ ΡΠ΅Π³ΡΠ»ΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΡΠΈΡΡΠ΅ΠΌΡ ΠΎΡΠΎΠΏΠ»Π΅Π½ΠΈΡ.
ΠΠ±ΡΠ΅ΠΊΡΠΎΠΌ ΡΠ΅Π³ΡΠ»ΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΡΠ²Π»ΡΠ΅ΡΡΡ ΠΌΠ°ΠΊΠ΅Ρ Π·Π΄Π°Π½ΠΈΡ, ΡΠΎΡΡΠΎΡΡΠ΅Π³ΠΎ ΠΈΠ· Π΄Π²ΡΡ
ΡΡΠ°ΠΆΠ΅ΠΉ. ΠΠ΅ΡΠ²ΡΠΉ ΡΡΠ°ΠΆ Π²ΠΊΠ»ΡΡΠ°Π΅Ρ Π² ΡΠ΅Π±Ρ Π΄Π²Π° ΠΏΠΎΠΌΠ΅ΡΠ΅Π½ΠΈΡ, Π²ΡΠΎΡΠΎΠΉ β ΠΎΠ΄Π½ΠΎ. Π ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅ ΡΠ΅ΠΏΠ»ΠΎΠ½ΠΎΡΠΈΡΠ΅Π»Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΡΠ΅ΡΡΡ Π²ΠΎΠ΄Π°.
ΠΡΠ½ΠΎΠ²Π½ΡΠΌΠΈ ΠΏΡΠ΅ΠΈΠΌΡΡΠ΅ΡΡΠ²Π°ΠΌΠΈ ΡΠ°Π·ΡΠ°Π±ΠΎΡΠ°Π½Π½ΠΎΠΉ ΡΠΈΡΡΠ΅ΠΌΡ ΡΠ²Π»ΡΠ΅ΡΡΡ Π΅Π΅ ΡΠ½ΠΈΠΊΠ°Π»ΡΠ½ΠΎΡΡΡ ΡΡΠ΅Π΄ΠΈ ΠΏΠΎΠ΄ΠΎΠ±Π½ΡΡ
ΡΡΡΠ΅ΡΡΠ²ΡΡΡΠΈΡ
ΠΏΡΠΎΠ΅ΠΊΡΠΎΠ², Π° ΡΠ°ΠΊΠΆΠ΅ Π½Π°Π»ΠΈΡΠΈΠ΅ ΠΏΡΠΎΠ³ΡΠ°ΠΌΠΌΠ½ΠΎ-ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠ²Π½ΠΎΠ³ΠΎ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠ° Π½Π° Π±Π°Π·Π΅ SCADA-ΡΠΈΡΡΠ΅ΠΌΡ, Π²Π΅Π΄ΡΡΠ΅Π³ΠΎ ΠΊ ΠΏΠΎΠ²ΡΡΠ΅Π½ΠΈΡ ΠΊΠ°ΡΠ΅ΡΡΠ²Π° ΡΠ΅Π³ΡΠ»ΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΈ Π±ΡΡΡΡΠΎΠ΄Π΅ΠΉΡΡΠ²ΠΈΡ ΡΠΈΡΡΠ΅ΠΌΡ.The aim of the work is to create a set of design and construction documentation for the laboratory stand-prototype of an automatic control system for the heating system of a two-story building, which will allow students to be trained in the field of regulation of the heating system.
The object of regulation is the prototype of the building, which consists of two floors. The first floor includes two rooms, the second includes one room. Water is used as a heat conductor.
The main advantages of the developed system are its uniqueness among similar existing projects and also the availability of a software-operational complex based on a SCADA system, leading to improved regulation and system response speed
Time-lapse total internal reflection fluorescence video of acetylcholine receptor cluster formation on myotubes
To study when and where acetylcholine receptor (AChR) clusters appear on developing rat myotubes in primary culture, we have made time-lapse movies of total internal reflection fluorescence (TIRF) overlaid with schlieren transmitted light images. The receptors, including the ones newly incorporated into the membrane, were labeled with rhodamine Ξ-bungarotoxin (R-BT) continuously present in the medium. Since TIRF illuminates only cell-substrate contact regions where almost all of the AChR clusters are located, background fluorescence from fluorophores either in the bulk solution or inside the cells can be suppressed. Also, because TIRF minimizes the exposure of the cell interior to light, the healthy survival of the cell culture during imaging procedures is much enhanced relative to standard epi- (or trans-) illumination. During the experiment, cells were kept alive on the microscope stage at 37Β°C in an atmosphere of 10% CO 2Β· Two digital images were recorded by a CCD camera every 20 min: the schlieren image of the cells and the TIRF image of the clusters. After background subtraction, the cluster image was displayed in pseudocolors, overlaid onto the cell images, and recorded as 3 frames on a videotape. The final movies are thus able to summarize a week-long experiment in less than a minute. These movies and images show that clusters form often shortly after the myoblast fusion but sometimes much later, and the formation takes place very rapidly (a few hours). The clusters have an average lifetime of around a day, much shorter than the lifetime of a typical myotube. The brightest and largest clusters tend to be the longest-lived. The cluster formation seems to be associated with the contacts of myotubes at the glass substrate, but not with cell-cell contacts or myoblast fusion into myotubes. New AChR continuously appear in preexisting clusters: after photobleaching, the fluorescence of some clusters recovers within an hour. Β© 1994 Wiley-Liss, Inc.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/50420/1/1002010104_ftp.pd
Π’Π΅Ρ Π½ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΡΠ΅ΡΠ΅Π½ΠΈΡ Π΄Π»Ρ ΡΡΡΠΎΠΈΡΠ΅Π»ΡΡΡΠ²Π° ΡΠ°Π·Π²Π΅Π΄ΠΎΡΠ½ΠΎΠΉ Π²Π΅ΡΡΠΈΠΊΠ°Π»ΡΠ½ΠΎΠΉ ΡΠΊΠ²Π°ΠΆΠΈΠ½Ρ Π³Π»ΡΠ±ΠΈΠ½ΠΎΠΉ 2900 ΠΌΠ΅ΡΡΠΎΠ² Π½Π° Π½Π΅ΡΡΡΠ½ΠΎΠΌ ΠΌΠ΅ΡΡΠΎΡΠΎΠΆΠ΄Π΅Π½ΠΈΠΈ (Π’ΡΠΌΠ΅Π½ΡΠΊΠ°Ρ ΠΎΠ±Π»Π°ΡΡΡ)
Π’Π΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΡΠ΅ΡΠ΅Π½ΠΈΡ Π΄Π»Ρ ΡΡΡΠΎΠΈΡΠ΅Π»ΡΡΡΠ²Π° ΡΠ°Π·Π²Π΅Π΄ΠΎΡΠ½ΠΎΠΉ Π²Π΅ΡΡΠΈΠΊΠ°Π»ΡΠ½ΠΎΠΉ ΡΠΊΠ²Π°ΠΆΠΈΠ½Ρ Π³Π»ΡΠ±ΠΈΠ½ΠΎΠΉ 2900 ΠΌΠ΅ΡΡΠΎΠ² Π½Π° Π½Π΅ΡΡΡΠ½ΠΎΠΌ ΠΌΠ΅ΡΡΠΎΡΠΎΠΆΠ΄Π΅Π½ΠΈΠΈ (Π’ΡΠΌΠ΅Π½ΡΠΊΠ°Ρ ΠΎΠ±Π»Π°ΡΡΡ).Technological solutions for the construction of an exploration vertical well of 2900 meters deep at an oil field (Tyumen Region)
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