Search results

However, the increasing number of tourists has exerted larger pressure on protecting resources.
The earlier accumulated environmental problems are expected to be relieved and solved by means of a series of ecological revival projects such as afforestation and grain for green.
After NDVI reclassification, the pixel number and proportion in the years of 1999, 2002, 2006 and 2007 are counted respectively.
It can be seen obviously from the histogram that the pixel number of Reclassification 0 tends to decrease year by year, while the numbers of Reclassification 1 and Reclassification 3 tend to increase year by year.
Fig.3 Histogram and roses plot of number of pixels after NDVI reclassified in different years 3.1.3 Analysis on the variation of the average value of NDVI Fig.4 shows the secular variations of the NDVI average value in the study area, indicating that the NAVI average value increased from 1999 to 2007 and its inter-annual variation range was between 0.2496 (1999) and 0.3871 (2006); The maximum value of NDVI in the study area fluctuated between the year of 1999 and 2007, but in a small range.

Most of the metallic ions and a large number of anions may constitute a perovskite structure.
Thanks to that, a huge number of combinations (from the original CaTiO3 to such materials like LiBaF3 [1]) have been already synthesized and studied.
Coordination numbers of A and B cations are 12 and 8, respectively.
It should be noted that there exist also a large number of perovskites of a metallic band structure in which A atom forms partially covalent bonds.
There exist a large number of materials which are used in various types of solid oxide fuel cells.

Furthermore, ijB in Eq. (4) is the back-stress tensor and the principal components ib are expressed, by employing the eight-chain model [15], as , 3 1 1 22      − = − N V NCb c c ciR i λ λλ Λ (4) where 3/) ( 2 3 2 2 2 1 2 VVVc ++=λ , iV is the principal plastic stretch, N is the average number of segments in a single chain, TnkC BR = is a constant, n is the number of chains per unit volume, Bk is Boltzmann's constant, and xxx /1)coth()( −=Λ is the Langevin function.
In the nonaffine eight- chain model [10], the change in the number of entangled points, in other words, the average number of segments N , may change depending on the distortion ξ which represents the local deformation of a polymeric material [10].
The simplest expression of the number of entangled points is ( ){ }ξ− = 1exp0 cNN with 1=ξ in the reference state, and 0N is the number of segments in a single chain in the reference state and c is a material constant.
Furthermore, these results suggest that the deformation behavior of mesoscopic scale in which the lamella interface direction is heterogeneously distributed is strongly affected by the interaction with surrounding grains in order to satisfy local compatibility and equilibrium.

rock 2-8 Metamorphic rock/ igneous rock 2-5 Sand and gravel 6-9 Weathered rock / igneous rock 3-5 Whinstone 2-10 Glacial drift 4-6 Welded tuff 8-10 Sandstone, limestone and shale 5-9 Groundwater depth/m 0-1.5 10 Block sandstone 4-9 1.5-4.6 9 Block limestone 4-9 4.6-9.3 7 Sand and gravel 4-9 9.3-15 5 Whinstone 2-9 15-23 3 Welded tuff 9-10 23-30 2 Soil medium type Thin layer or none 10 >30 1 Gravel 10 Net Recharge /mm 0-50 1 Sand 9 50-100 3 Turf 8 100-175 6 Expansion and cohesive clay 7 175-250 8 Sandy mild clay 6 >250 9 Mild clay 5 Ground slope /% 0-2 10 Mealy sand mild clay 4 2-6 9 Clayey mild clay 3 6-12 5 Waste 2 12-18 3 Aeration zone medium type Closed layer 1 Coefficient of transmissibility /m2/d 1-100 1 Mealy sand and clay 2-6 100-300 2 Shale 2-5 300-700 4 Limestone 2-7 700-1000 6 Sandstone 4-8 1000-2000 8 Layered limestone, sandstone and shale 4-8 >2000 10 The concrete calculation formula is as follows: DRASTIC index = 5D +4 R +3 A +2 S + T +5 I +3 C, wherein the number
The method is as follows: (4) Then the normalized matrix R’ is got: (5) (3) The assessment index eigenvalue weight Pij of the number j to-be-assessed sample under the number i assessment index is calculated: (6) (4) The entropy ei of the number i assessment index is calculated: (7) (5) The weight ai of the number i assessment index is calculated: (8) (6) The comprehensive assessment value Wj of each sample is calculated: (10) The calculated comprehensive assessment value is partitioned into several corresponding intervals and the vulnerability level can be judged according to the value.
Deposits of different stages of Miocene and late Pleistocene and Holocene are piled from top to bottom in the distribution range of the alluvial plain, it is composed of a set of coarse-grained loose rocks, and pore diving and pore confined water – under-pressure artesian water aquifer in this area is formed.
Thus, the total number of the grid units is 443,490, so the to-be-assessed index matrix of the grid unit set is a 443,490×7 matrix (See Table 2).

Effect of numbers of patch layer on fatigue crack growth was studied by Hosseini-Toudeshky [16] on single-side patched aluminum plate.
This difference is affected by grain size in both directions [17].
This is the effect of reduction of boundary correction factor “b” who depend mainly of the thickness of specimen, numbers of plies and thickness of adhesive.
Fig. 11 exhibit the variation of crack length versus number of load cycles for patched specimen with various numbers of graphite /epoxy patch layers.
The crack growth lives of the patched specimen with the thickness of 3 mm increase with increasing the number of patch layers.

O J Gregory improved that nitrogen-doped ITO is more stable in grain boundaries in high temperature environments.
Since it does not need to consider the number of atoms compared with the Gaussian solution, it’s practical to analyze the proportion of the concentration by error function solution.
In order to facilitate matrix batch processing, each layer is numbered as below: the atmosphere is numbered 1, layer-1 is numbered 2, and so on.
Layer-n is numbered , and the base is numbered n+2.

The average grain size of the synthesized powders was around 200 nm.
The occupation numbers of electrons are expressed Gaussian distribution function with an electronic temperature of kT = 0.001 Ry.
Its mixing factor for self - consistency is to be 0.2 and the number of iterations used in mixing scheme is 5.
(2) Where, n is the number of electrons being transferred during the intercalation process, F is the Faraday constant, ∆G is the Gibbs free energy.

Get the disks and logs marked the south and north direction and numbered.
Table1 Basic information of Trees Numbers tree-age (Y) height of tree (m) clear length (m) DBH(diameter at breast height) (cm) Moisture content of green wood (%) elevation (m) Soil class male and female face S1 7 10.9 4.5 11.5 80.3 320 red earth sunny side S2 7 11.3 5.8 12.6 82.2 320 red earth sunny side S3 7 13.2 5.3 13.3 81.1 320 red earth sunny side S4 7 12.7 4.8 12.7 84.9 320 red earth sunny side S5 7 12.4 5.7 11.2 80.5 320 red earth sunny side Test method Anatomic property.Make wooden slice according to the regular method of closing dissection and observe the structure of the sample wood through optical microscope.
Data processing.Use the software SPSS12.0 to do statistical analysis on the eigenvalue of the anatomic construction number and physical and mechanical properties of timber.
The number of vessels is small and it is visible via naked eyes with more or less same size, evenly distributed, diffuse porous wood; there is a lot of axial parenchyma, which is visible by naked eyes and shaped as apotracheal band and terminal; the number of wood ray ranges from moderate to utmost and from extremely fine to less fine, obvious under magnifier.
The ray tissue always lays in single row or separated rows and the number of former is small, while the latter is large.

Soil moisture status is one of the main factors affecting the coffee root activity and leaf function, so strengthening water management is the main measure to guarantee growth of root, leaf, grain, quality and high yield.
The flower numbers and yield were basically the same under different irrigation treatments (100 mm, 80 mm, and 60 mm) [9].
The results showed that the number of flower and fruit increased with increasing irrigation amount, and irrigation amount of 20 L to 25 L made flowering period shifted to an earlier date than 15 L [14].
Based on the effect of fertilization and shade on the 6-year-old coffee growth and yield, nodes number and yield of coffee increased with increasing shade, while effect of fertilization was no significant on coffee leaf and node number, the leaf area of each branch and yield [18].
The study investigated the effect of different irrigation and fractional step fertilizer on coffee plant height, diameter of main stem, corolla and the number of nodes with four irrigation levels in Minas Gerais, Brazil, and the results showed that fractional step fertilizer did not increase coffee yield, while irrigation of 120%ET0 could achieve high yield[24].

Complexity of river network (CR): It is used to describe the development degree of river network’s number and length.
In network graph, degree of vertices (Di) of a certain vertex is the number of edges connecting it[3].
The higher the degree of vertices is, the fewer the number of vertices is.
From 1960s to 1980s and then in 2009, the number of edges, vertices and vertices of different Di are gradually reducing and the reduction is more obvious in the later period.
For instance, after 1950s, large acreage of lakes reclaim, and reclamation of land from lake for grain.