bluuebunny/crossref_metadata_2025_split huggingface dataset:
Comparison of AWASSI sheep lambs livabilityat effects of genetic and environmental factors
Authors: Ali Maan A. 
Published: August 2020

Abstract
Viability of Local and Turkish AWASSI sheep lambs where compared at weaning, 6, 9, and 12 months of age in order to study the effects of the parents breed, sex, birth type,age and interaction among them for the years 2009, 2010, 2011, sheep records of Agriculture research state board – sheep station in Baghdad, were analyzed, which its account were 1218, 1199, 1190, 1163 at weaning, 6, 9, 12 months of age respectively . Study result appeared that the parents breed was significant (p > 0.01), to the Turkish lambs from the weaning to one year of age. while the parents age were significant (p > 0.05) at 6, 9 months and high significant (p > 0.01) for lambs livability at 12 months of age, while parents sex and birth type effects were not significant at lambs livability at any period from weaning to one year of age . Highest livability of lambs were for parents of 4 years old that reached 90.738%, 89.976%, 89.685%, and 88.887% while the lowest lambs livability were for parents of 8 years old that reached 77.777%, 76.736%, 76.736%, 61.111 % at weaning, 6, 9, and 12 months of lambs age respectively. Interaction between parents breed and age was significant (p > 0.05), for lambs livability, only at the age of 12 months, while all the other interactions were not significant.
Research on the Geotechnical Engineering Investigation and Foundation Treatment Methods of Large Thickness Collapsible Loess
Authors: Zhang Xiucang , Lv Qiang 
Published: August 2020

Abstract
Geotechnical engineering plays a valuable and fundamental role in the process of engineering construction in China, and during the process of geotechnical engineering construction, engineering investigation and foundation treatment have significant influence on the whole construction quality of the geotechnical engineering. The widespread distribution and overall features of collapsible loess bring more difficulty for engineering investigation and foundation treatment. Any failure of accurate investigation and effective foundation treatment may lead to the collapse during the engineering construction. There is a large area of collapsible loess in the northwest of China, especially in Lanzhou, and such extensive distribution of collapsible loess makes it quite difficult during the geotechnical engineering construction. How to conduct effective geotechnical engineering investigation and foundation treatment for collapsible loess is the priority of researches on geotechnical engineering construction in Lanzhou for the moment. During the process of foundation treatment of collapsible loess, the overall characteristics of loess should be taken into consideration, and then it shall be analyzed and demonstrated from perspectives of economy, rationality and feasibility. This paper takes Lanzhou as the research object and carries out the research on the geotechnical engineering investigation and foundation treatment methods in this area during the research process. The research outcomes can serve as empirical support and theoretical reference for geotechnical engineering investigation and foundation treatment of large thickness collapsible loess, and further improve the construction quality and economic benefits of geotechnical engineering.
Application of GPS Positioning Technology in Civil Engineering Survey
Authors: Zhanwu Ma 
Published: August 2020

Abstract
In the process of continuous improvement of my country’s scientific and technological level, the development and application of new technologies are relatively fast, and the application of new technologies in various fields is relatively extensive. The full application of GPS positioning technology in the surveying and mapping line is of great significance, which can greatly improve the efficiency and accuracy of civil engineering surveying. With the continuous development and application of GPS measurement technology, it can promote the further development of my country’s engineering measurement industry. In the actual operation of GPS positioning technology, the signals sent by the satellites can be obtained in time, and then the signal information is processed to accurately determine the specific spatial location of the measurement point. The three-dimensional navigation performance and positioning function of GPS positioning technology is relatively strong, with strong anti-interference ability, and can be fully applied in the measurement process of various civil engineering. In order to improve the application effect of GPS positioning technology, we need to further study the GPS positioning technology and discuss the specific application of mechanical positioning technology in the civil engineering measurement process, so as to provide corresponding reference for the popularization and application of GPS positioning technology.
The Eigensolution Expansion in Viscoelastic Materials
Authors: Zhang WX , Yang LM 
Published: August 2020

Abstract
By using the eigensolution expansion method, the problem can be transformed into a Hamiltonian matrix. In symplectic system, the study of elasticity takes the primal variable and its dual variable as the basic variable, which makes the separated variable method be implemented smoothly, thus forming a unique direct method. The significance of the transition from Lagrangian system to Hamiltonian system lies in the transition from the traditional Euclidean geometry to the symplectic geometry, and the introduction of dual mixed variable method into the broad field of applied mechanics, which provides a powerful tool for the discussion of mechanical problems. At the same time, this method, marked by the all state vector, is more in line with and adapts to the development of computer. The trend is very important to the engineering mechanics system, the mathematical physics method and the research of other subjects.
Static and Dynamic Analysis of Viscoelastic Structure
Authors: Zhang WX , Yan GF 
Published: August 2020

Abstract
Generally, the incremental superposition method is used to analyze the stress and deformation of viscoelastic structures. In the calculation, the total time is divided into several intervals. It is assumed that the internal stress remains unchanged in each time interval. The creep deformation generated in this period is taken as the initial strain at the next moment, and the displacement increment is solved according to the elastic problem together with the load, and the total displacement is obtained gradually by superposition. In the study of this method, the integral constitutive relation is used in most cases, and the relaxation modulus is expressed by Prony series. Therefore, the convolution can be expressed by recursion formula, and the memory can be greatly reduced.
Dynamic analysis of vehicle-track response for subway with pumping house cancelled
Authors: Feng Duyang , Zhang Jichun 
Published: August 2020

Abstract
Wastewater pump room is used to lead wastewater out of subway sections. The wastewater pump room is the side channel of subway sections which is often constructed by freezing method. Since the freezing method construction has a certain risk of failure which leads to soil foundation collapse easily, as an alternative, subway section drainage can be achieved by installing a drainage pump inside railway track concrete roadbed. Because the built-in pumping weakened the original integrity of roadbed structure, in this paper, by establishing a finite element analysis model of the vehicle-track-tunnel, 12 indexes including dynamic response of the track structure, stability and safety of running vehicle were calculated. Results show that, while vehicle passing through the section, the build-in pumping structure meet requirements of track structure dynamic responses, vehicle running safety and stability.
Temperature field simulation using CFD in the plant factory
Authors: Zhou Shenghan , Liu Huan , Fan Ruiqi , He Zhongqun , Zhang Yao , Chen Yufei , Sun Xiaoyu , Zhou Xiaoting , Yang Qichang , Zheng Yangxia , Lu Wei 
Published: August 2020

Abstract
This experiment was developed by Computational fluid dynamics (CFD) technology. A three-dimensional model was conducted for an indoor artificial light plant factory to simulate the temperature field distribution. The results showed that the average absolute error of simulated temperature and measured temperature was 0.7°C, and the average relative error was 3%. The growth indexes of Brassica chinensis in the artificial light plant factory were measured. The uniformity of airflow field in the cultivation area should be further studied for the structural optimization of the plant factory.
Response Analysis of A Heat-absorbing Tower under Near-field Earthquake
Authors: Yazhou Xu , Na Liu , Xianan Hou 
Published: August 2020

Abstract
In order to better study the impact of near-field vibration pulse effects on high-rise structures, a random point source method and an equivalent velocity pulse superposition method were used to generate 26 multi-environmental near-field vibration samples with pulse effects for 7-degree fortification. Through the finite element modeling and analysis, the vibration type of the light and heat tower structure is obtained, and the seismic response of the heat absorption tower is analyzed by the generated random ground motion, and the mean value and variance of the structure dynamic amplification factor, base shear force and displacement angle are obtained. Coefficient of variation. The results show that the random seismic response of the structure shows an obvious discrete type, the dispersion of the acceleration amplification factor increases with the height of the tower, the displacement response increases with the height of the tower, and the steel structure on the top of the tower has a significant whiplash effect.
A numerical simulation study on the sedimentation dredging in Lushui Reservoir, part 2: influence and its back siltation
Authors: Ge Hua , Deng Chunyan 
Published: August 2020

Abstract
A well-verified two-dimensional mathematical model for vertical averaged flow was used to calculate the influence on the flow after the sedimentation dredging in Lushui Reservoir. The numerical simulation results shows that the influence of dredging works on the flow in the dredging reach is limited, and the influence is mainly concentrated in the local area near the dredging area, while the influence on the velocity flow pattern and the overall river regime in the main channel of the dredging reach is relatively small.
Shear test on binding performance of reactive powder concrete and normal concrete
Authors: Yu Xinmin , Chen Shichuan , Hou Shifeng , Wang Dehong , Ju Yanzhong 
Published: August 2020

Abstract
In order to investigate the bonding performance between reactive powder concrete (RPC) and normal concrete (NC), nine groups of RPC-NC composite specimens were designed for double-sided shear based on the orthogonal test. The test parameters include interface roughness, RPC water binder ratio and steel fibre content. The results show that the roughness is the most important factor to affect the bond shear strength, followed by RPC water binder ratio, and steel fibre content has the least influence. In the range of 2.11mm ~ 6.01mm average sand filling depth, the bonding strength of RPC and NC with the same water binder ratio increases with the increase of interface roughness. The average bonding strength of 0.22 water binder ratio group is the highest, and it is 7.6% and 28.3% higher than that of 0.24 and 0.20 groups, respectively. Based on the test results, the prediction formula of the bond shear strength of RPC-NC considering the interface roughness and the water binder ratio of RPC is established.
Influence of free face numbers on energy distribution characteristics of blast vibration signal in underwater drilling blasting
Authors: Ma Chenyang , Wu Li , Zhou Yuchun , Wang Yufeng , Sun Miao 
Published: August 2020

AbstractAiming to the problem of free face not only affect the blasting effects but also the blasting vibration affects, an analytical method of exploring the free face’ influences of the blasting vibration and the attenuation law of seismic wave is proposed. Taking the field monitoring data of underwater blasting seismic wave between the river reach of the Three Gorges Dam and Gezhouba Dam as the study object, utilize the wavelet analysis and decompose method to research the blasting vibration signal’s total energy and energy distribution characteristics in variety of frequency band on different free face. The results indicated that underwater drilling blasting vibration has the characteristic of low frequency, short duration and fast attenuation. Most of the energy of the explosion will be consumed as seismic energy in the slotted blasting due to the restricted of a single free face. However, after the subsequent excavation blasting, the free face number increases but the total energy of blasting vibration and PPV decreases. Therefore, in addition to the usual seismic mitigation measures of underwater drilling and blasting, the number of free faces can be increased to achieve the effect of shock absorption control without reducing section charge.
Analysis on the Local Evaluation of the Micro Space of Public Toilet in Linpan Integrating Industry and Tourism
Authors: Zhang Chengyan , Long Minqi , Luo Haiyan 
Published: August 2020

Abstract
Under the upsurge of beautiful rural construction and “toilet revolution”, the public toilets in rural areas have made remarkable achievements in environmental health, but it is still poor in micro space quality and aesthetic sense, and homogenization causes serious local deficiencies. Therefore, this paper selects Daoming bamboo art village in Chongzhou city and Chuanxi Music Linpan in Dujiangyan city of China as the research areas. Starting from the micro space of public toilet in Linpan integrating industry and tourism, On the basis of defining the concept of the micro space, this paper uses Likert scale method to acquire the local evaluation of local villagers, tourists and business operators on the micro space, and applies factor analysis method to verify the evaluation five-dimension of the micro space, including humanistic care, cultural heritage, landscape optimization, spatial design and functional innovation. The results show that the respondents have a high recognition of the local landscape of the micro space, but it is believed that there are still deficiencies in terms of humanistic care, functional innovation, spatial design and cultural heritage. It aims at providing a reference for the local evaluation and creation of the micro space of Linpan, so as to help the protection of Linpan in Western Sichuan.
Research on the Co-occurrence Characteristics of the Floods Between Lower Reaches of Jinsha River and the Chuanjiang River
Authors: Zhang Fahong , Ren Zaimin , Liu Yu , Ju Bin , Lei Xiaohui 
Published: August 2020

Abstract
In order to provide a theoretical basis for real-time flood control, reduce the flood disaster in the lower reaches of Jinsha River and the upstream Yangtze River (the section in Sichuan Province, also known as the Chuanjiang River), as well as alleviate flood control pressure of the downstream Three Gorges Project flood encounter characteristics between the lower reaches of Jinsha River and the Chuanjiang River were discussed in detail based on Copula Function Method. AIC criterion and OLS criterion were applied in the paper to evaluate the fitting effect of four Archimedean Copula function models, and Frank Copula function with the best effect was selected for the flood encounter analysis subsequently. The result shows that: the proportion of the maximum 3d, 7d, 15d, 30d flood volume of the lower reaches of Jinsha River in the composition of the Chuanjiang River increases in sequence. Frank Copula function has very small errors in the flood encounter problems of the lower reaches of Jinsha River and Chuanjiang River, with higher credibility, its calculation results are consistent with the flood encounter laws of the two rivers. The frequency of occurrence of the largest flood peak in the two rivers in different months is significantly different. The co-occurrence probability of floods with peak flow greater than 50-year flood for the two rivers is 0.15%. Therefore, by taking full advantages of the flood co-occurrence characteristics, it’s extremely practicable to reduce not only the flood control pressure of Chuanjiang River but also the downstream Yangtze with the cascade reservoir operation in the lower reaches of Jinsha River.
Flexural performance of Reinforced Concrete One-way Slabs Strengthened by FRP Grid
Authors: Tao Yi , Wang Wei 
Published: August 2020

Abstract
Fiber reinforced polymer (FRP) grid is a kind of two-way fiber material. Its transverse reinforcement and longitudinal reinforcement have the same physical characteristics. Experiments on the reinforced concrete one-way slabs strengthened by FRP grid were conducted to study the influences of bonding area and FRP anchors on its flexural performance. The results showed that the flexural capacity of reinforced concrete one-way slabs strengthened by FRP grid is increased by 7% - 21%. FRP grid can effectively slow down the crack expanding, increases the stiffness and improve the flexural behavior of the slab.
Shaking table test and numerical analysis of a new method for disaster control and reinforcement of frame structure crossing ground fissures
Authors: Xiong Zhongming , Yang Shuai , Zhang Chao , Chen Xuan 
Published: August 2020

Abstract
In order to seek suitable reinforcement measures for disaster control of structures spanning the ground cracks in high-intensity areas, a shaking table test of a five-story frame structure model spanning the ground cracks and being supported was designed according to the scale of 1:15. ABAQUS software was used to establish the calculation model of the frame structure before and after reinforcement, and the results were compared with the results of the shaking table test. The reinforcement model was analyzed from the dynamic characteristics, acceleration, displacement and strain of the structure. Therefore, the proposed disaster control and reinforcement method is feasible. The results of this study can provide a reference for the reinforcement of this kind of straddle-crack structure.
Research on Torsional Effect of Friction Pendulum Isolation Structure Based on Nonlinear Time History Analysis
Authors: Wang Baolun , Li Cong , Jin Tao , Zhang Minghui , Huang Shan 
Published: August 2020

Abstract
A multi-layer irregular reinforced concrete frame structure in the 8-degree area is taken as the research object, and the working principle and hysteretic model of the friction pendulum bearing (FPB) are explained in detail. With the help of SAP2000 finite element software, a friction pendulum isolation model and its corresponding non-isolation model were established. Plastic hinge constitutive models were defined at both ends of the beams and columns of the RC frame structure, and 100 sets of two-way elastoplastic time history analysis of ground motion are carried out by using dynamic time history method. The results show that: under rare earthquakes, the seismic response of interlayer displacement, interlayer shear, interlayer torque and interlayer torsion angle of the structure after friction pendulum isolation is significantly reduced. Among them, the maximum torsional angle of the base-isolated structure is reduced by nearly 60% compared to the maximum inter-layer torsional angle of the non-isolated structure, and the torque of the first-layer base-isolated structure is reduced by nearly 74.1% compared to the torque of the non-isolated structure, which can prevent serious torsional damage under rare earthquakes and ensure the safety of the structure.
Neutrino energy loss rates due to 66-71Ni in stellar matter
Authors: Farooq Fakeha , Shehzadi Ramoona , Nabi Jameel-Un 
Published: August 2020

Abstract
Rates for (anti-)neutrino energy loss on nickel isotopes, due to interactions involving weak decays (β±-decay and lepton captures) are regarded as having fundamental importance during late evolutionary stages of massive stars. These rates substantially affect the leptonic ratio (Ye) of stellar interior. For the densities less than 1011 g/cm3, weak processes produce (anti-)neutrinos which cause reduction in the stellar core’s entropy. In this paper, rates for neutrino and anti-neutrino energy loss on nickel neutron-rich isotopes (66-71Ni) have been presented. Rates for energy loss have been determined by applying the deformed pn-QRPA model. The ranges for temperature and density, have been used to determine the rates, are from 0.01 to 30 (109 K) and 101 to 1011 (g/cm3), respectively. Our computed rates for energy loss, at higher temperature regions, are enhanced in comparison with previously reported rates of Pruet and Fuller (PF).
Indigenous Design and Development of Split Hopkinson Pressure Bar (SHPB) test setup for characterization of materials at high strain rates
Authors: Bilal Nutkani M , Abid Muhammad , Asim Pasha Riffat , Ahmed Dar Uzair 
Published: August 2020

Abstract
This paper presents design and development of split Hopkinson pressure bar (SHPB) indigenously for testing of different materials at high deformation rate. SHPB is capable to measure the deformation rate 100s-1 to 2,000s-1, by maintaining the uniform and uni-axial stress in the samples. SHPB apparatus consist of the mechanical components, support structure, bars supports and the incident and transmission bars, striker bar, gas gun, piston and rod assembly. The momentum trap system is used to absorb the energy in the form of friction and heat. All components are designed, manufactured, calibrated and assembled to test the samples. Results obtained at high deformation rates are used to characterize samples of different materials by converting in the form of strain, strain rate and stress amplitude in samples.
Natural and anthropogenic landscapes of the gold-mining regions in Bashkortostan (Russia)
Authors: Kutliahmetov A N , Kulagin A A , Serova O V , Gatin I M 
Published: August 2020

Abstract
This article presents the results of laboratory and field studies of territories in the zone of influence of the gold extracting and mining enterprises of the Southern Urals. Researches were conducted on six sites of gold mining of the past years, in order to identify natural and technogenic mercury in various natural and man-made landscapes of mining Bashkortostan. A brief description of the mineralization of the study area and types of gold deposits is given. The mercury content in bedrock, in various types of ores, man-made soils (fine-grained tailings dump, tailings), soils, bed-silts, in the soil air, in water was determined. The largest technogenic anomalies are Hg dissemination flows in bed silts of watercourses and lakes. Technogenic Hg anomalies in soils are local and are formed in the areas of mining and old ores processing. The practical absence of anomalies in transit environments with intensive Hg accumulation in long-term deposition reflects the regressive residual nature of technogenic mercury anomalies.
Environmental impact assessment of gold underground leaching technology
Authors: Kutliahmetov A N , Kulagin A A , Iskhakov F F , Rakhmatullina I R , Nizamutdinova N R , Shaidullina G F , Safarova V I 
Published: August 2020

Abstract
The research assessed an impact of the underground gold mining (GM) on snow cover, surface and ground water of the industrial site and the adjacent area. It has been established that the water of observation wells located downstream the terrain contains specific pollutants typical for the GM technology. The snow cover contains dust, heavy metals, arsenic and some light organochlorine compounds, which are components of GM solutions. The article also gives recommendations on monitoring and assessment of the environmental impact of the PoE technology.