bluuebunny/crossref_metadata_2025_split huggingface dataset:
Detection Beta-lactam residues in imported and local dairy products in Mosul city
Authors: Albanna Ayman , Fadhel Mazin N. , Al-Shaker Yusra M. S. 
Published: August 2020

Abstract
Two hundred and forty samples of milk products were examined for ß-Lactam antibiotics residues by using a quantitive technique (Sandwich-ELISA). Basically, the study comprised three different dairy farm animals (buffalo, cow, and sheep), the samples were collected from Mosul city farms, and compared to imported dairy products from exotic sources. Apparent ß-Lactam residues were found most of the milk products, considerably local and imported products. In terms of local milk products were 50% of cow, 60% of sheep, and 20% of buffalo mostly free from antibiotic residue. In contrast, imported milk products were 90% of cow, 70% of Sheep, and 10% of buffalo, also free from antibiotic residue and suitable for human consumption. However, there were many samples of milk products contaminated with ß-Lactam residue, in particular, buffalo products were high concentrations of ß-Lactam compounds, regardless of whether local and imported products. With respect to cow products, 50 % of local samples compared to 10 % of imported samples were contaminated with ß-Lactam residues. Whereas in sheep products, 40% of local products compared to 30% of imported products were high concentration of antibiotic residues. Surprisingly, for all samples of this study, it has been noticed within the same product, the concentration of ß-Lactam was high level in cheese and cream compared to milk raw, however, in yogurt were decreased sharply 45% compared to cream, cheese, and milk respectively.
Effect of Organic and Inorganic Fertilizers on Growth and Yield of Hybrid Cucumber Cucumis sativus L. Grown under Unheated Plastic House
Authors: Jawad Muharram Al-Bayati Hussein 
Published: August 2020

Abstract
The experiment was conducted in one of the unheated plastic houses of the Department of Agriculture and Landscape Design / College of Agriculture and Forestry / University of Mosul during the agricultural season 2018 to study the impact of two factors: The first addition of organic fertilizers decomposed poultry residues fertilizer (Atalpolina) 100 kg. 1000 m2 and rice residues fertilizer 10 t. ha−1 and sheep residues fertilizer 10 t. ha−1 and compound chemical fertilizers 300 kg. ha−1, In addition to the comparison treatment, the second: Two cucumber hybrids Sultan and Zain. The experiment applied in the field of split system with in randomized complete block design RCBD with three replicates. Analysis statistically the results were as follows: The hybrid Zain increased plant height, number of leaves, leaf area per plant, length of fruit and number of fruits per plant, while the hybrid Sultan increased fruit weight. The inorganic treatment caused decreased number of days for flowering plants and increased plant height, number of leaves, leaf area pre plant, and number of fruits per plant, yield per plant, early fruits yield and total yield of fruits comparison with control treatment. The interaction of treatments the addition of inorganic fertilizers with Zain hybrid gave the lowest number of days to flowering the plants and increased plant height, number of leaves per plant, leaf area per plant, number of fruits per plant, yield per plant and number of fruits per plant. The treatment of sheep waste in the same hybrid increased early fruits compared with other treatments.
Effect of adding different levels of vitamin B7 to the diet on some blood for the of parameters Japanese quail (Coturnix coturnix japonica ) exposed to oxidative stress
Authors: Hamza Yasser Al-Awadi Ibrahim , Abdul-Lateef Ali Al-Nadawi Nihad 
Published: August 2020

Abstract
This experiment was conducted at the poultry farm of the college of Agriculture, University of Al-Qasim Green for the period from 26/9/2019 to 8/11/2019. The study was aimed to the effect of adding different levels of vitamin B7 to the diet on some blood for the of parameters Japanese quail (Coturnix coturnix japonica ) exposed to oxidative stress. in the experiment, 300 unsexed Japanese quail birds were used. The eggs were obtained from the Agricultural Research Department in Abu Ghraib and the eggs hatched in Al-Nasr hatchery in Babylon province. They were raised together until the age of 8 days and then were randomly distributed to 5 treatments with 3 replicates each treatment ( 20 birds / replicate). The oxidative stress was induced by adding 0.5% H2O2 to drinking water and the experimental treatments were as follows: The first treatment: a negative control treatment that is free of vitamin B7 or H2O2. The second treatment: a positive control treatment that was free of adding vitamin B7 + water with H2O2 added by only 0.5%. The third treatment: adding vitamin B7 at a concentration of 500 micrograms/kg feed + water added with H2O2 at a concentration of 0.5%. The fourth treatment: adding vitamin B7 at a concentration of 600 micrograms/kg + water with H2O2 added at a concentration of 0.5%. The fifth treatment: adding vitamin B7 at a concentration of 700 micrograms/kg + water with H2O2 added at a concentration of 0.5%. The treatment lasted from 8 to 42 days. The experiment included the study of the following traits: red blood cell count, white blood cell count, percentage of Haematocrit (%), Hemoglobin concentration, percentage of the heterophile cells (%), percentage of lymphocyte cells (%) and H/L ratio. The results indicated that the fourth and fifth treatment (adding of 600 and 700 micrograms of vitamin B7 / kg feed) showed a significant improvement (p≤0.05) in the numbers of red blood cells compared to the first treatment (negative control) and the second treatment (positive control), as for the Haematocrit and haemoglobin concentration The adding treatments (third, fourth, and fifth) significantly differed (p≤0.05) on the first treatment (negative control) and the second treatment (positive control) at the age of 42 days. All treatments of adding vitamin B7 recorded a significant decrease (p≤0.05) in the numbers of white blood cells, percentage of the Heterophil cells (%) and increase in Lymphocytosis cells and decrease in the percentage of H/L cells as compared with the second treatment (positive control). It is concluded from the present experiment that adding of the vitamin B7 at a concentration of (600, 700 μg/kg feed) to the diet can lead to improving some blood parameters for Japanese quail.
The effect of using three different levels of Fish Meal on growth criteria and feeding efficiency in Cyprinus Carpio.
Authors: Al-Bachry Waleed Sami J. , Abd Al-Jabbar Ibrahim Ali , Al-Humairi Kadhim O. M. 
Published: August 2020

Abstract
Study the effect of three different levels of adding a fishmeal protein concentrate on the growth rates of the common carp fish (Cyprinus carpio) through laboratory experiments, which lasted for 40 days. 27 common carp fish were used with a weight of 2 ± 93.27 g and distributed over 9 concrete ponds with a capacity (300) liters, according to three treatments T1, T2, and T3 distributed in three replicates for each treatment, and put 9 fish (3 fish / repeated). The fish were fed on three different diets, with a protein concentrate ratio of 23%, 15% and 10%, respectively. Measurement of weight, relative specific growth rates and food conversion rates. The best total weight gain increase for the second treatment was recorded (35.478 ± 2.29 g). The best relative growth rates were (37.769 ± 2.51) and specific (0.346 ± 0.02)% g/day and protein efficiency ratio ( 2.365 ± 0.23) for the second treatment also, and significant differences were recorded at (P <0.01) on the two treatments T3; T1 in all the studied characteristics.
Growth and Yield Response of Basil (Ocimum basilicum L.) to Different Rates of Urea Fertilizer Under Field Conditions
Authors: Sabah Alhasan Ali , Kadhem Abbas Majeed , Al-Ameri Maryam , Tareq Al-Ameri Dalal 
Published: August 2020

Abstract
Basil plant (Ocimum basilicum L.) is aromatic and medicinal plants, cultivated for producing essential oil, and utilizing in culinary, biopesticides, and pharmaceutical productions. Notwithstanding, basil production can be used in different markets. Nitrogen deficiency is the main factor influences basil production in the world. Thus, this study was performed during the summer season of 2019 to evaluate the impact of the application of urea fertilizer (applied at seven rates; 0, 20, 40, 60, 80, 100, and 120 kg N/ha) on chlorophyll, agronomic traits, seed yield, and essential oil production. Using a moderate rate of urea fertilizer is proposed to be sufficient for some agronomic traits. Moreover, a nonlinear-relationship between essential oil and urea fertilizer rate was found. This study”s results proved that utilizing urea fertilizer at a moderate rate can increase agronomic traits and essential oil of basil.
Effect of essential oil of colocynth, Citrullus colocynthis and spearmint, Mentha spicata against the khapra beetle, Trogoderma granarium Everts (Coleoptera: Dermestidae)
Authors: Tareq Al-Ameri Dalal , Hamza Abbas K. , Hasson Hassan Bassim , Sabah Alhasan Ali 
Published: August 2020

Abstract
Khapra beetle Trogoderma granarium is considered to be the most severe primary pests, affected both the quality and quantity of wheat during storage. Therefore, khapra beetle is a serious problem in developing and developed countries. A laboratory study was performed to evaluate the influence of the essential oil rate of spearmint Mentha spicata and colocynth Citrullus colocynthis against khapra beetle T. granarium to determine the mortality rate of egg, larvae, pupa, and adults. Throughout the experiment, increasing the doses of essential oil of spearmint resulted in the highest rate of mortality of the khapra beetle egg, larvae, and pupa compared with increasing the rate of essential oil of colocynth. Thus, a linear relationship was found between the mortality rate of khapra egg, larvae, and pupa with the essential oil rate of spearmint. The highest mortality rate of adults (94%) was obtained by applying 50 µL of spearmint. In contrast, the highest concentrations (40 and 50 µL) of essential oil of colocynth showed the lowest mortality rate of khapra beetle adults. This study suggested that the essential oil of spearmint could be utilized as potential control agents for stored-product insects in wheat.
Application progress of scour-abrasion resistant materials of hydraulic concrete
Authors: Xu Tao , Ma Yu , Wang Yuanli , Tao Jianqi , Li Xiulin 
Published: August 2020

Abstract
As the concrete surfaces of the sluice structure in the water conservancy and hydropower engineering would often suffer from the erosion of high speed sandy flow or water flow with bed load, there will often appear different degrees of wear and cavitations damages after a certain time of operation. Therefore, it is especially important to use the materials with high performance in resisting erosion and abrasion. Based on analyzing the abrasion damage mechanism and form of concrete, this paper mainly summarizes the research and application of scour-abrasion resistant materials, introduces the new development of scour-abrasion resistant materials, and finally provides an effective way of solving the impact of high silt-laden water erosion.
A Comprehensive Evaluation Model of Dam Failure Consequences Based on Combined Weighted Cloud Model
Authors: Xiong Fangjin 
Published: August 2020

Abstract
In order to solve the uncertainty and fuzziness of various factors, the cloud model theory is introduced to establish evaluation indexes from four aspects of life loss, economic loss, social impact and environmental impact. AHP and grey correlation method are applied to subjective and objective weight respectively, and a combination weight based on cloud model is proposed the evaluation model of dam break consequence. According to the evaluation index system and evaluation standard of dam breach, the cloud model parameters of different accident levels under the evaluation index are determined in the model; the combined weight of each index is calculated based on AHP and correlation degree method, and the comprehensive evaluation model of dam breach consequences is constructed. Taking five reservoirs in Jiangxi Province as an example, the results show that the model is effective and feasible, which provides a new way for the comprehensive evaluation of the consequences of dam break.
A Brief Analysis of Green Construction of Prefabricated Building Based on Guide Frame Climbing Lifting Platform
Authors: Liao Chenya , Li Shuxun , Chen Shuyuan 
Published: August 2020

Abstract
With the development of the construction industry and the vigorous support of national policies, prefab building has become the trend of future development of construction industry, which also makes the use of mechanical equipment in construction gradually enriched. Among them, the guide frame climbing lifting platform belongs to the building elevation construction equipment, which is more efficient in the construction process of prefabricated building. Its main characteristic is to reduce the construction personnel’s allocation, and the construction personnel’s burden, to ensure the quality and efficiency of construction, and to ensure that the safety of construction personnel played a huge role. It has played a great role in ensuring the safety of construction personnel and so on.
Research on propagation law of one-dimensional stress wave in jointed rock mass under in-situ stress
Authors: Dong Qian 
Published: August 2020

Abstract
The propagation law of stress wave in jointed rock mass under in-situ stress has important engineering significance on blasting excavation and protection engineering design of deep rock mass. Based on theoretical analysis, the propagation law of stress wave across multiple nonlinear deformation joints under the initial stress is studied. Firstly, the propagation equation of stress wave across multiple nonlinear joints considering the influence of initial stresses is established, through the discontinuous deformation method (DDM) and the recursive analysis method of stress wave in time domain. On this basis, parametric studies are conducted for the effects of stress wave propagation, such as initial stress, the amplitude of stress wave, the distance and the number of joints. The results show that the existence of initial stress will affect the propagation of stress wave, the geometric distribution of joints, such as spacing and number, can also cause the change of stress wave transmission coefficients, and the amplitude of incident wave varies can also lead to the change of stress wave propagation.
Reservoir dam operating risk dynamics modelling for safety control in the emergency response process
Authors: Shen Guangze , Lu Yi , Zhang Shichen , Xiang Yan , Sheng Jinbao , Fu Jilei , Fu Shan 
Published: August 2020

Abstract
As revealed by the dam break accident investigation statistics, flawed organizational behavior determines the safety level of the reservoir dam. Its operating risk revolution process involves water, disaster, relief material dispatching, information interaction, and so on. The multiple information transferring mode and dynamic processes perform with the characteristics of the social-technical system, but little prior research on the risk causality can be found in such a view. The traditional risk analysis and assessment techniques based on linear accident model and the partial probability calculation cannot effectively satisfy the requirements for dam-break emergency decision-making in a dynamic and systematic way. Based on the system dynamics approach, this study proposed risk dynamics models aiming for risk interaction mechanisms involving organizational, human, and technical system factors leading to dam break. The models guided the development of a quantitative risk assessment tool to integrate relevant professional modules and data. The derived policy suggestions which guarantee the life and property of downstream residents can improve the abilities of dam operating management organization for more effective responses under emergency circumstances.
Study on Bearing Capacity Influence Factors of the PBL Shear Connector
Authors: Qingxuan Shi , Fengzhu Yang , Jiangran Guo 
Published: August 2020

Abstract
In order to study the main influencing factors of the ultimate bearing capacity of the PBL connector, the large-scale nonlinear finite element analysis software ABAQUS was used to establish the solid model of the PBL connector, and the accuracy of the model was verified by comparison with the test results. Based on this, the main influencing factors of the ultimate bearing capacity of PBL connectors are analyzed. The results show that it is feasible to apply ABAQUS to the finite element analysis of the mechanical properties of PBL connectors, which can be assisted by experiments and empirical formulas; The concrete strength, the diameter of rebar and the number of holes have a significant effect on PBL connectors’ force, but the diameter of holes has little effect.
Analysis of the Influence of Bridge Piers on River FlowII-Computation of Bridge Crossing Choking
Authors: Deng Chunyan , Ge Hua , Long Rui , Yuan Yuan 
Published: August 2020

Abstract
The analysis of the impact of pier backwaters is very important in bridge design. The composition of the bed sand across the river, the shape of the pier, the hydraulic gradient of the channel, and the water resistance of the pier all have an impact on the water level backwater height and backwater distance. Considering the actual situation of the project, the influence of piers on flood discharge is analysed and calculated by different backwater empirical formulas. The results show that the calculation results of the formulas are not far apart. Considering the most unfavourable situation, the calculation results of Cao Ruizhang formula of the Chinese Academy of Railway Sciences are selected as the final results. Combined with the analysis of water resistance, the construction of the project has little impact on the flood discharge of the river.
PCA-NARX Time Series Prediction Model of Surface Settlement during Excavation of Deep Foundation Pit
Authors: Ma Qingwen , Liu Sihan , Zhao Xianchang 
Published: August 2020

Abstract
In order to ensure that the excavation of the foundation pit can proceed smoothly in complex environment, the deformation prediction is particularly important. Because the traditional model can not accurately predict the surface settlement when the external environment changes, so the PCA-NARX foundation pit settlement prediction model is proposed. The principal component analysis(PCA) method is used to analyze the main components that affect the surface settlement and use them as parts of the external input to dynamically predict the surface settlement. Combined with Beilong Lake Foundation Pit Project in Zhengzhou, the applicability and accuracy of the model are evaluated. The results show that: (1) Comparing with the prediction results of BPNN model, NAR model and NARX model, PCA-NARX model has higher accuracy, the mean square error is only 0.1677. (2) Comparing with NARX model without PCA method, PCA-NARX model can achieve higher accuracy in the same training time, and the accuracy is improved by 12.89%, so it is more effective to predict the surface settlement during excavation. (3) The prediction results of PCA-NARX at different monitoring points also performed well, which means that it can be applied to the prediction of other monitoring contents of the foundation pit.
Time Iteration for Service Life Prediction of Concrete Structure in Marine Environment
Authors: Jiang Qiongming , Ji Xuekuan , Nong Zhonglin 
Published: August 2020

Abstract
On the basis of chloride diffusion model, the time-varying and randomness of chloride diffusion in concrete are considered, Based on the reliability method, the service life of cross sea bridge structure can be predicted by the double cycle iteration of reliability and service life, and the service life of concrete of cross sea bridge structure can be directly calculated by the double iteration. In order to reduce the iterative calculation, through the improvement of the time iteration strategy, the tangent slope is replaced by the cut line slope, which not only makes the iterative convergence fast and accurate, but also solves the problem of service life and It is difficult to derive the implicit function of reliability.
Analysis of seismic performance of gravity dam based on ultra-high performance concrete reinforcement
Authors: Shi Junfei , Ma Tianxiao , Gao Lingang 
Published: August 2020

Abstract
Damage and crack of gravity dams under earthquakes directly affect the dam’s safety. Ultra-high performance concrete has high strength and durability. Whether to replace steel bars for seismic reinforcement becomes the focus of consideration. In the paper, the plastic damage model of ultra-high-performance concrete is established. Taking the gravity dam section as an example, referring to the design concept of the “gold coated silver” gravity dam, three different forms of seismic-reinforced schemes of ultra-high-performance concrete in weak areas of the dam are presented and analyze damage time histories. The calculation results show that the application of ultra-high performance concrete for reinforcement can greatly reduce the damage of the dam and improve the seismic performance of the dam. The study suggests that proper reinforcement measure can be taken according to the conditions of dams.
Analysis of Seismic Performance of the New Self-centering Buckling Restrained Brace
Authors: Qingxuan Shi , Yanchun Wang , Feng Wang 
Published: August 2020

Abstract
A new structure of self-centering buckling restrained brace was proposed. The finite element model was established by ABAQUS software. The mechanical failure mechanism of this kind of self-centering buckling restrained brace was studied. The influence of the parameters such as the area of self-centering reinforcement and the sectional area of core tube on its hysteretic performance and self-centering ability was analyzed. The results show that with the increase of the area of the reset reinforcement, the hysteretic curve of the brace is more pinched, and the self-centering ability is increased by 46%; it was suggested that the weakening degree of the cross-sectional area of the core tube should not exceed 50%.
Sensitivity analysis and instability study of mechanical parameters of deterioration layer of RCC dam
Authors: Liu Yongtao , Zhang Hailong , Zheng Dongjian , Cao Enhua , Kuai Pengcheng 
Published: August 2020

Abstract
Aiming at the characteristics of multi-layer structure of roller compacted concrete (RCC) dam and the complicated combination of layers, the three-dimensional calculation of the structure of RCC dam adopts the multi-layer elastoplastic constitutive model. The influence of various parameters of RCC dam deterioration on the strength of the dam body was analyzed in detail. The Latin hypercube algorithm was used to randomly sample each material parameter. The sensitivity of the degraded interlayer parameters was studied based on the Spearman rank correlation coefficient. To solve the simulation The non-stationary randomness of the degradation process, the introduction of the impact factor attenuation function to smooth the degradation, the establishment of a time-varying model of material parameter degradation, and on the basis of the strength reduction coefficient method, the degradation driving level of the RCC dam is calculated. Through the research results, it is possible to focus on monitoring the relevant aspects of the dam during operation, take relevant measures in real time, and feedback on the design and construction plan, which is of great significance for the research on the stability of the RCC dam against sliding.