Organic substitution (partial of chemical fertilizer with organic fertilizer) is an effective approach to address soil degradation caused by excessive application fertilizers, particularly in saline areas. This study aimed evaluate the effects different proportions using made from agricultural wastes on saline-sodic properties and sunflower (Helianthus annuus L.) growth arid area. Additionally, tried reveal possible mechanism quality improvement structure. A two-year field experiment was...

Abstract. Soil salinity and sodicity caused by saline water irrigation are widely observed globally. Clay dispersion swelling influenced sodium (Na+) concentration electrical conductivity (EC) of soil solution. Specifically, potassium (K+) also significantly affects structural stability, but for which concern was rarely addressed in previous studies or practices. A column experiment carried out to examine the effects with different relative concentrations K+ Na+ (K+ / Na+), including 0:1...

Airborne Light Detection And Ranging (LiDAR) point cloud is an important data source for building 3D digital cities and can be used to acquire update urban buildings, roads etc. However, it difficult extract complete accurate boundaries from airborne LiDAR clouds due partial occlusion, which mainly caused by adjacent tall trees, particularly in spring summer. In this paper, we propose improved minimum bounding rectangle (IMBR) algorithm regularized with without occlusion aerial clouds. The...

A Shuttle Radar Topography Mission (SRTM) digital elevation model (DEM)-aided geopositioning method is proposed to solve the problem of without ground control points for Mapping Satellite-1 imagery. The comprises coarse and accurate correction stages, it compensates errors gradually. DEM extraction matching are important steps in both objectives which compensate relative absolute an image, respectively. SRTM integrated into all processes take full advantage its consistent high accuracy....

Automatic DEM deformation detection without ground control points (GCPs) with its application in debris flow change analysis is an attractive but very difficult research topic. Based on the existing methods of M‐LZD and LMS‐LZD, this paper presents improved method that takes both magnitude relationship into account through allocating appropriate weight to each observation evaluating contribution allocated weight. Such improvement enhances greatly ability detection. Compared LMS‐LZD...

Photogrammetry based on high-resolution satellite image can acquire geospatial information within a large area rapidly and timely, but its geopositioning accuracy is highly dependent ground control points. Under the background of global mapping, public digital elevation model (DEM) assisted Chinese scheme was proposed to realize photogrammetry without To make full use DEM advantages consistent high accuracy, regarded as reference data matched with extracted from image, then determined...

Abstract. A two-step vehicle recognition method from an aerial Lidar point cloud is proposed in this paper. First, the segmented using region-growing algorithm with size limitation. Then recognized according to profile shape based on dynamic time warping. The can detect vehicles parking under trees urban scene, and classifies into different classes. location, orientation, direction also be determined. experimental result a real shows that correctly recognize 95.1 % of vehicles.

A hand-held Raman spectroscopic device was used as a rapid nondestructive testing to predict the metmyoglobin (MetMb) and reductase activity (MRA) values on surface layer of fresh beef. Longissimus dorsi muscles were from 10 young bulls (Holstein-Friesian) two different cattle farms (group = 5 B 5). The spectra 100 samples correlated with MetMb MRA using partial least squares regression (PLSR). Two groups could be discriminated, separate correlation models better than joint model for...

A vehicle extraction method is proposed in this paper to extract vehicles urban areas more accurately from airborne point clouds. First, the ground points are separated non-ground points, and a potential vehicle-occupied area (PVOA) then extracted cloud. PVOA-based cloud segmentation work, gap-based put forward re-cluster segment, which may include multiple vehicles. The clustered into series of one-vehicle segments empty segments. Following this, shape-based recognition presented that can...

Accurate and complete rail extraction from mobile laser scanning (MLS) data is currently a fundamental challenging problem for its application on the railway. By using track knowledge, signed cylindrical neighborhood difference defined as descriptor then proposed new algorithm MLS data. It can extract accurate, continuous, railhead, which most critical geometric parameter centerline, of entire Moreover, it successfully railhead main-line, including curve section with different...

Abstract Digital elevation model (DEM) matching techniques have been extended to DEM deformation detection by substituting a robust estimator for the least squares estimator, in which terrain changes are treated as gross errors. However, all existing methods only emphasise their detecting ability, and neglect another important aspect: when error can be detected located, this system useful. This paper employs judgement matrix tool make an in-depth analysis of problem. The theoretical analyses...

Static track inspection methods record the position and direction data through surveys completed by trolleys that survey a based on control network. The points must be measured in sections to decrease likelihood of measurement errors. Certain will twice adjacent stations, different results obtained because To improve regularity track, point from sectional measurements processed, differences for same eliminated. Therefore, this paper proposes novel method referred as processing (RPSMD)...

Nian zhuan has its aroma as one of the perceived principal characteristics. The current study was aimed mainly to investigate potential include nian a new target criterion into green wheat product chain. By improving conditions for traditional processing zhuan, optimal were determined (GW) 14 d, steaming with skin (SGWS) 26 min and cooked peeled (CGWP) 280 min, evaluate feasibility using electronic nose (E-nose) gas chromatography mass spectrometry (GC-MS) discriminate in different stages....

Wastewater treatment plants (WWTPs) are one of the largest sources energy consumption and greenhouse gas (GHG) emissions in urban systems. WWTPs account for 3% global electricity 2% GHG (in terms CO2 equivalents). Chinese wastewater emission standards have risen to improve water quality. The upgrading increased investments facilities, power chemical usage, others that can directly or indirectly increase carbon emissions. This study collected operational data from 15 key control areas Ziya...

The objectives of present study were to investigate the influence pigments and myoglobin on color fresh beef during storage. effect relative amounts myoglobin, total chromatic absorbance, lightness, redness yellowness longissimus lumborum, evaluated. results showed that changes in parameters 0 7d depended primarily content three chemical forms myoglobin. value L* mainly variation A525. a* while b* proportions deoxymyoglobin (Mb), oxymyoglobin (MbO2) metmyoglobin (MetMb).

Debris-flow is one of the major geological hazards in southwest China, which are a global threat and happen results thousands deaths injuries billions dollars damages globally. Automatic multi-temporal DEM coregistration for detecting terrain changes an attractive but inherent very difficult research topic. Many methods have been proposed recent years, all them can only deal with limited percentage changes. However, landslide debris-flow areas, rate high. To solve such problem, new method...

Abstract Salinity is one of the most decisive environmental factors limiting crop productivity, especially in arid and semi‐arid regions. The objective this study was to evaluate growth depression spring maize ( Zea mays L.) due salinity stress caused by different drip irrigation regimes an saline area. A two‐year field experiment conducted Hetao Irrigation District, northwest China 2019 2020. soil moderately with EC e (electrical conductivity saturated extract) 8.04 dS m −1 . Three...