mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Total N, total P and organic matters content in floodplain soils of Xianghai Nature Reserve

Soil sediment samples of 10 layers with a spacing of 10 cm each were collected in different floodplain zones adjacent to Huolin River in the Xianghai Nature Reserve, and contents of total N, total P and organic matters were analyzed. The results showed that contents of total N, total P and organic matters were generally decreasing with the increase of distance from sample locations to the river channel, and contents of the three items were generally higher in the upper soil layer than that in the lower soil layer. The content variations displayed how flooding functions influenced nutrient matter content variations in floodplain soils since the Hood inundation frequencies of the sample locations varied. The correlation analysis displayed that there were remarkable relativities between total N, total P and organic matters within definite spatial distance from the Huolin River channel.
Crystallization behavior of melt-spun NdFeB permanent magnets

The crystallization behavior of melt-spun Nd_(8.5)Fe_(78)Co_5Cu_1Nb_1B_(6.5) ribbons was investigated using dynamic differential scanning calorimetry (DSC) and X-ray diffractometry (XRD). It was found that the as-spun ribbons crystallize in two steps: at first the Nd_3Fe_(62)B_(14)+α-Fe phases are formed and subsequently Nd_3Fe_(62)B_(14) transformed to Nd_2Fe_(14)B and α-Fe upon heating above 680℃. The effective activation energy of two crystallization peaks are 332.0kJ/mol and 470.5kJ/mol, respectively. As the wheel speed increases, the magnetic properties of the magnet change obviously. When the wheel speed is 18m/s, the best magnetic properties of the magnet was obtained after the sample was annealed at 690℃ for 8min: B_r=0.74T, _iH_c=421.7kA/m, (BH)_(max)=64.5kJ/m3.
The ostracod assemblages and their environmental significance in the Chen Co area, southern Tibet in recent 1400 years

The CC1 core, with a length of 216 cm, was drilled in the west part of the Chen Co (Lake) in southern Tibet Plateau. The 2l"Pb and l37Cs measurement indicated that it was a consecutive sedimentary sequence since ca. 1400 years. The ostracoda and their assemblages under the level of 1 cm samples' cutting interval were finished for this core to reveal the past environmental changes in the lake area. A total of 15 species of ostracods belonging to 7 genera in the core sediments had been identified. According to the ostracod distributions, abundances and preservations in the core, seven ostracod assemblages had been distinguished. The ostracod assemblages and their ecological features, together with the sediments dating decision were used to infer the past ca. 1400 years environmental changes of the Chen Co environmental evolutions in three stages, which had responded to the Medieval Ages Warm-period (MAW), the Little Ice Age (LIA) and modern warm period. The results show that the changes of the Chen Co environment had been mainly influenced by the climatic variations. The trend of the lake level fluctuations had been accorded with that of climatic variation during the past 1400 years.
Response of photosynthesis, morphology and growth of edysarum mongolicum seedlings to simulated precipitation change in Maowusu sandland

Response patters were investigated for seedlings of Hedysarum mongolicum, a dominant shrub in Maowusu sandland, to the simulated precipitation change by artificially controlling water supply at four levels. Plant growth characters, in terms of branch number and length, leaf number and area, and biomass, increased while water supply increased. However, the effect of water supply on leaf photosynthetic rate was not significant. Root/shoot biomass ratio significantly decreased with the increase of water supply, which was considered adaptive distribution of biomass investments in the different water supply. Water supply obviously affected branching patter. Branch section number,branch number and length of the same section enhanced as water supply increased. Branch number and length were clearly positive correlation with total and aboveground biomass in four water supply treatments. Branch character fully showed plant growth.
Thermal contraction phenomenon of cluster structure of indium melt

The structure of liquid indium was studied at 280, 390, 550, 650, 750 ℃, respectively, by using an elevated temperature X-ray diffractometer. The diffraction intensity, structure factor, pair distribution function, radial distribution function, nearest interatomic distance and coordinati on number were obtained. The results show that the structure of In melt can be approximately described by the random closed packed hard-sphere model with hard-sphere diameter d=2.86, packing density η=0.45. The cluster structure of In melt transforms from quasi-face-centered-cubic lattice into random closed packed structure above melting point. It has been found that the nearest interatomic distance r1 and coordination number Ns decrease with increasing temperature from 280 ℃ to 750 ℃, r1 decreases from 3.25 to 3.18 and Ns decreases from 12.771 to 6.648, and thermal contraction phenomenon of atom cluster occurs. Thermal contraction of In melt cluster is not homogeneous in whole measured temperature range. The sudden transformation and the biggest contraction have been found in the range of 390～550 ℃.
Relationship Between Support Vector Set and Kernel Functions in SVM

Based on a constructive learning approach, covering algorithms, we investigate the relationship between support vector sets and kernel functions in support vector machines (SVM). An interesting result is obtained. That is, in the linearly non-separable case, any sample of a given sample set K can become a support vector under a certain kernel function. The result shows that when the sample set K is linearly non-separable, although the chosen kernel function satisfies Mercer's condition its corresponding support vector set is not necessarily the subset of K that plays a crucial role in classifying K. For a given sample set, what is the subset that plays the crucial role in classification? In order to explore the problem, a new concept, boundary or boundary points, is defined and its properties are discussed. Given a sample set K, we show that the decision functions for classifying the boundary points of K are the same as that for classifying the K itself. And the boundary points of K only depend on K and the structure of the space at which K is located and independent of the chosen approach for finding the boundary. Therefore, the boundary point set may become the subset of K that plays a crucial role in classification. These results are of importance to understand the principle of the support vector machine (SVM) and to develop new learning algorithms.
The application of GPR to barrier-lagoon sedimentation study in Boao of Hainan Island

Sedimentary successions and internal structure of the coastal barrier-lagoon system of Boao, eastern Hainan Island were studied through utilizing data from test holes and trenches and ground-penetrating-radar (GPR) profiles. During late Pleistocene, fluvial and delta plains developed over an unevenly eroded bedrock during low sea level stand, followed by the formation of littoral and lagoon fades and defined coastal barrier-lagoon-estuary system during the post-glacial uppermost Pleistocene-lower Holocene eustatic rise of the sea level, and the upper Holocene high stand. GPR results show that Yudaitan, a sandy coastal bar backed by a low-laying land (shoal) just east of the active lagoon, is a continuous, parallel and slightly-wavy reflectors indicating homogeneous sandy or sandy gravel sediments, and inclined reflectors partly caused by progradation and accumulation of beach sand and gravel. Quasi-continuous, hummocky and chaotic reflectors from the shoal of Nangang village correspond to mixed accumulation of sands and clay. This research indicates the GPR is a non-intrusive, rapid, and economical method for high-resolution profiling of subsurface sediments in sandy gravelly coast.
IPULOC－Exporing Dynamic Program Locality with the Instruction Processing Unit for Filling Memory Gap

emory gap has become an essential factor influencing the peak performance of high-speed CPU-based systems .To fill this gap,enlarging cache capacity has been a tradi-tional method based on static program locality principle .However,the order of instructions stored in I-Cache beore being sent to Data Processing Unit(DPU)is a king of useful infor-mation that has not ever been utilized before .So an architecture containing an Instruction Processing Unit(IPU)in paralley with the ordinary DPU is proposed,The IPU can prefetch,analyze and preprocss a large amount of instrucitons otherwise lying in the I-Calch untouched.It is more efficient than the conventional prefetch buffer that can only store several instructions for previewing.By IPU ,Load Instructions can be preprocessed while the DPU is executing on data simultaneously,It is termed as “Instrction Processed while the DPU is executing on data simultaneously.It is termed as “Instruction Processing Unit with LOokahead Cache“ (IPULOC for short)in which the idea of dynamic program locality is presented.This paper describes the principle of IPULOC and illustrates the quantiative parameters for evaluation.tools for simulating the IPULOC have been developed.The  simulation result shows that it can iprove program locality during program execution,and hence can improve the cache hit ratio correspondingly without further enlarging the on-chip cache that occupies a large portion of chip area.
An Algebraic Hardware/Software Partitioning Algorithm

Hardware and software co-design is a design technique which delivers computer systems comprising hardware and software components. A critical phase of the co-design process is to decompose a program into hardware and software. This paper proposes an algebraic partitioning algorithm whose correctness is verified in program algebra. The authors introduce a program analysis phase before program partitioning and develop a collection of syntax-based splitting rules. The former provides the information for moving operations from software to hardware and reducing the interaction between components, and the latter supports a compositional approach to program partitioning.
The responses of hydro-environment system In the Second Songhua River Basin to meltwater

Based on the continuous monitoring data of hydrology and water quality in the period from 1972 to 1997, the responses of hydro-environment system to melt water in the Second Songhua River basin were derived. Because of melt water, the water quality in the Second Songhua River is good and changes very except that the contents of Hg and Mn in the water are higher. The contribution of melt water to the water fluxes in the Second Songhua River basin is distinct: the water flow in April increases remarkably, reaches the peak in the upper reaches. The pollutant contributions and water pollution indices (WPIs) of the Second Songhua River in April are high in the upper reaches while that in the lower reaches are low. The responses of hydro-environment system to melt water of that basin are affected by content of packed snow and the underlining surface systems.
Basic properties of calcium phosphate cement containing different concentrations of citric acid solution

The properties of calcium phosphate cement consisting of α-tricalcium phosphate (α-TCP) and tetracalcium phosphate (TTCP) have been investigated by using a cement liquid that contained citric acid with concentration of 0.05mol/L or higher. The relationship between the setting time of the system cement and the concentration of citric acid solution shows concave type curve. When solution concentration was 0.2mol/L, the setting time was 8min, which was t he shortest. While the relationship between 24h compressive strength of the cement and the citric acid concentration shows convex type curve. When solution concentration was 0.2mol/L, the compressive strength was 39.0MPa, which was the highest. Afterwards, the microstructure of the hardening product w as observed by SEM, the effect of citric acid on the exothermic rate of hydrate reaction was studied by microcalorimeter, and the crushed specimens were subject ed to X-ray diffraction. The results verified that the low citric acid concentration can accelerate the hydrate reaction rate of the α-TCP/TTCP system. However, the high citric acid concentration inhibited hydroxyapatite formation an d retarded the rate of hydrate reaction of the α-TCP/TTCP cement.
The land use and land cover change database and its relative studies in China

In the mid-1990s, we established the national operative dynamic information serving systems on natural resources and environment.   During building the land-use/land-cover change (LUCC) database for the mid-1990s, 520 scenes of remotely sensed images of Landsat Thematic Mapper (TM) were interpreted into land-use/land-cover categories at scale of 1:100,000 under overall digital software environment after being geo-referenced and ortho-rectified. The vector map of land-use/land-cover in China at the scale of 1:100,000 was recently converted into a 1-km raster database that captures all of the high-resolution land-use information by calculating area percentage for each kind of land use category within every cell.   Being designed as an operative dynamic information serving system, monitoring the change in land-use/land-cover at national level was executed. We have completed the updating of LUCC database by comparing the TM data in the mid-1990s with new data sources received during 1999-2000 and 1989-1990. The LUCC database has supported greatly the national LUCC research program in China and some relative studies are incompletely reviewed in this paper.
Effects of Zr on crystallization kinetics of Pr-Fe-B amorphous alloys

The effects of Zr on crystallization kinetics of Pr-Fe-B amorphous alloys have been investigated by DTA and XRD methods. It was found that for Pr_8Fe_(86-x)Zr_xB_6(x=0, 1, 2) amorphous alloys, the final crystallized mixture is α-Fe and Pr_2Fe_(14)B, and the metastable Pr_2Fe_(23)B_3 phase occurs during crystallization of Pr_8Fe_(86)B_6 amorphous alloy, not during crystallization of Pr_8Fe_(86-x)Zr_xB_6(x=1, 2) amorphous alloys. By analyzing the activation energy of crystallization, the formation of an α-Fe/Pr_2Fe_(14)B composite microstructure with a coarse grain size in annealed Pr_8Fe_(86)B_6 alloy, is attributed to a difficult nucleation and an easy growth for both the α-Fe and Pr_2Fe_(14)B in the alloy. The addition of Zr can be used to change the crystallization behavior of the α-Fe phase in Pr-Fe-B amorphous alloy, which is helpful to reduce the grain size for the α-Fe phase.
Spatial patterns of urban land use growth in Beijing

By using digitized land use maps of Beijing in 1982, 1992 and 1997 and employing GIS spatial patterns of urban land use growth in Beijing in the period of IWM997. It is ol?ervcd that urban land use growth m Beijing went beyond the control of urban pUnning, in tarns of the extraordinary high growth rate and undesired spatial pattern. The rate of urban expansion after 1W2. which was predominated by growth of industrial land, was extraord.nary high compared tu hs historical penod. While its growth centers have been actively shifting toward" the northern part, rather than toward the southern and eastern parts as designated by the latest General Plan (WI-20IO) of Beijing, its spatial pattern of urban land use growth in general was in distinct concentric sprawl, which seriously violated the General Plan of Beijing.
Biodiversity and conservation in the Tibetan Plateau

The Tibetan Plateau (Qinghai-Xizang Plateau) is a unique biogeographic region in the world, where various landscapes, altitudinal belts, alpine ecosystems, and endangered and endemic species have been developed. A total of 26 altitudinal belts, 28 spectra of altitudinal belts, 12,000 species of vascular plant, 5,000 species of epiphytes, 210 species of mammals, and 532 species of birds have been recorded. The plateau is also one of the centers of species formation and differentiation in the world. To protect the biodiversity of the plateau, about 80 nature reserves have been designated, of which 45 are national or provincial, covering about 22% of the plateau area. Most of the nature reserves are distributed in the southeastern plateau. Recently, the Chinese government has initiated the "Natural Forests Protection Project of China," mainly in the upper reaches of the Yangtze and Yellow rivers. "No logging" policies have been made and implemented for these areas.
Preparation of PFS coagulant by sectionalized reactor

The oxidation rate of ferrous sulfate is investigated for the preparation of polyferric sulfate(PFS) coagulant.It is proved that this reaction is zero order with respect to Fe^2+, first order with respect to NO_2 (g),and first order with respect to the interface area between gas phase and liquid phase.According to this mechanism,sectionalized reactor(SR) is used in place of traditional reactor(TR),and the liquid of reaction mixture is recycled by pump.As a result,not only the flow path of reaction liquid is prolonged,but also gas-liquid contact area enlarged,and the reaction distinctly accelerated,compared with traditional reactor.The effects of parameters including temperature,acidity and others on the reaction rate are also discussed.
Land use and landscape pattern change: a linkage to the construction of the Qinghai-Xizang HighwayLand use and landscape pattern change: a linkage to the construction of the Qinghai-Xizang Highway

Based on digital land use data from 1995 to 2000 and road data, the land use and landscape changes of Golmud, Qumaleb and Zhidoi are studied on a macro-scale. Land use and landscape changes in highway buffer zones and city expansion are special subjects. A new formula is used to define the exact degree of dynamic land use. To adequately define land use and landscape pattern changes, the buffer zones, illustrating the changes at different distances from the road, are recognized with ArcGIS 8.1 software. Prominent changes took place in land use and landscape patterns from 1995 to 2000, and the area of built-up land increased by 323.8%. The comprehensive degree of dynamic land use is 2.25, and the degree of dynamic land use of built-up land is the highest, followed by cultivated land. Woodland has the lowest value. The used degree index of land resources declined by 38.8 from 1995 to 2000. Landscape changed dramatically which influenced ecological processes immensely. Different from the corridor effect of other traffic routes, the corridor effect of this section of road is not obvious and its "point" radiation effect can be easily seen. The expanding range of Golmud City is confined to a 3 km buffer, while for Wudaoliang, it is 1 km. No land use change happened in the Nanshankou buffer.
Intersexual plasticity in aspects of the biology of the mudskipper Periophthalmus barbarus (Gobhdae) in the mangrove swamps of IMO Estuary, Nigeria

Between April 1992 and March 1993, intersexual plasticity in aspects of the biology of the mudskipper, Periophthalmus barbarus was studied. Sex was differentiated on the basis of the genital papillae, it was broader in females than males. Sexually active females were slightly heavier than similarly-sized males. Sex ratio was strongly female-biased.length-weight relationship of the sexes was isometric. There was no significant difference in the feeding intensity of both sexes; uniformity was also apparent in diet breadth. There was no named sex-based difference in hepatosometic index but condition index was higher in males than females. The uniformity in intersexual plasticity of P. barbarus is consequent upon homogeneity of the mangrove ecosystem, which can only be altered anthropogenically.
Senescence-like changes induced by expression of p21^Waf1/Cip1 in NIH3T3 cell line

P21^Waf1/Cip1 is a potent cyclin-dependent kinase inhibitor.As a downstream mediator of P53,P21^Waf1/Cip1 involves in cell cycle arrest,differentiation and apoptosis.Previous studies in human cells provided evidence for a link between P21^Waf1/Cip1 and cellular senescence.While in murine cells,the role of P21^Waf1/Cip1 is indefinite.We explored this issue using NIH3T3 cells with inducible P21^Waf1/Cip1 expression.Induc-tion of P21^Waf1/Cip1 triggered G1 growth arrest, and NIH3T3-p21 cells exhibited morphologic features,such as enlarged and flattened cellular shape,specific to the senescence phenotype.We also showed that P21^Waf1/Cip1-transduced NIH3T3 cells expressed β-galactosidase activity at pH6.0 ,which is known to be a marker of senescence.Our results suggest that P21^Waf1/Cip1 can also induce senescence-like changes in murine cells.
Description of adsorption of hydrophobic organic compounds on sediment using multi-component adsorption model

A chemical sequential separation procedure for sediment bas been developed for the adsorptive investigation of hydrophobic organic compounds(HOCs) including four fractions: carbonate, hydrous metallic oxide(ferric oxide, manganese oxide and alumina), clay and organic matter. Adsorption isotherms of these hydrophobic solute probes, such as hexachloroethane, lindane and 1,2,4,5-tetrachlorobenzene were measured for model sorbents, model and natural sediment, and the latter of which was pretreated with the simplified sequential separation method. The linear and Langmuir models are applied to correlate the experimental data of humic substance and other model sorbents respectively. Multi-component Adsorptive Model (MCAM) was used to simulate adsorption isotherms of model and natural sediment. The results reveal that( 1 ) the separation efficiencies of carbonate, organic matter, ferric oxide, manganese oxide and alumina are 98.1 % , 72.5% ,82.6%, 93.5% and 83.3%, respectively; (2) except for removing metallic oxide, the external structure of sediment is not changed greatly after separation; (3) the MCAM correlates the data of adsorption isotherm rather well with the maximal relative deviations of 9.76 % , 6.78 %and 9.53% for hexachloroethane, lindane and 1,2,4,5-tetrachlorobenaze in model sediment, respectively. The MCAM can clearly give expression to the different adsorptive mechanisms for HOCs in organic and inorganic matter, though the experimental data in each component are not very accurate due to the sequential separation efficiency.
Effect of inhibitors on corrosion behavior of copper-nickel in concentrated lithium bromide solution at high temperature

The conventional mass-loss tests and the electrochemical techniques were used t o study the inhibition action of LiOH and Na_2MoO_4 either individually or in different combination for copper-nickel alloy in boiling 65%LiBr solution. It indicates that the corrosion rate of copper-nickel is decreased when LiOH or Na_2MoO_4 is added to the solution individually. LiOH concentration has a double-effect on the corrosion behavior of copper-nickel. Low concentration is benefit to forming oxide film. High concentration results in dissolution of oxide film. The optimal concentration of LiOH is 0.15mol/L. The dissolution of copper-nickel is effectively prevented when adding 200mg/L Na_2MoO_4 to boiling 65%LiBr solution with 0.15mol/L LiOH. The inhibition mechanism is considered that the films of Cu, Ni, Mo oxides and deposited nonprotective in soluble CuBr on the surface of metal could prevent Br- ion from absorption, which prevent alloy dissolving.