Periodicals of Engineering and Natural Sciences最新文献_第10页

Enhancement consistency and compaction characteristics of clayey soil using nano silica material 纳米二氧化硅材料增强粘性土的稠度和压实特性

Periodicals of Engineering and Natural Sciences Pub Date : 2023-01-12 DOI: 10.21533/pen.v10i6.3367

Najwa Wasif Jassim, Hanan Adnan Hassan, Hadeel Ammar Mohammed, Mohammed Yousif Fattah

引用次数: 0

Deformation behavior of flexible pavements by finite element simulation 柔性路面变形特性有限元模拟

Periodicals of Engineering and Natural Sciences Pub Date : 2022-12-31 DOI: 10.21533/pen.v10i6.3392

Duaa S. Alwan, H. Joni, M. Hilal

{"title":"Deformation behavior of flexible pavements by finite element simulation","authors":"Duaa S. Alwan, H. Joni, M. Hilal","doi":"10.21533/pen.v10i6.3392","DOIUrl":"https://doi.org/10.21533/pen.v10i6.3392","url":null,"abstract":"Flexible pavement is usually designed based on certain axle load limits and climatic conditions. The Iraqi code has specified certain load limits per each axle type that should not be exceeded. However, many trucks violate these limits by carrying additional weights to decrease the transportation cost. These overweight trucks cause severe deterioration to the pavement and thus reduce its life. The Iraqi authorities generally charges the violating trucks a penalty based on their weights. This penalty could be very small compared to the damage occurring to the pavement based on these over weights. Also, some trucks may carry huge weights that the pavement may not support, so unloading such trucks could be a suitable solution rather than paying few amounts of money and deteriorating the pavement. The study aims at studying the effect of axle load increase, and the variation in pavement moduli, on the overall pavement life. It also aims to estimate the overweight truck limits that could be penalized or unloaded. The research uses the ABAQUS software conditions to estimate the tensile strains occurring under the asphalt concrete (AC) layer and the compressive strains above the subgrade surface. These computed strains are incorporated in the fatigue cracking and rutting models to estimate the pavement life for different axle weights. Results showed that violating trucks should be unloaded when their weights exceed certain limits.","PeriodicalId":37519,"journal":{"name":"Periodicals of Engineering and Natural Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41712413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of a mathematical model of video monitoring based on a self-organizing network of unmanned aerial vehicles 基于无人机自组织网络的视频监控数学模型的开发

Periodicals of Engineering and Natural Sciences Pub Date : 2022-12-31 DOI: 10.21533/pen.v10i6.3381

J. Q. Jameel, ,. E. A. Tareq Nasser Mahdi

引用次数: 0

Experimental study on repair of cracked pipe under internal pressure 内压作用下裂纹管道修复的试验研究

Periodicals of Engineering and Natural Sciences Pub Date : 2022-12-31 DOI: 10.21533/pen.v10i6.3369

Ali Abduljabbar, Haider Khazal, A. F. Hassan

引用次数: 0

Study of effective calculation operation implementation remaining multi-bit numbers division on FPGA 在FPGA上实现剩余多位除法的有效计算运算研究

Periodicals of Engineering and Natural Sciences Pub Date : 2022-12-31 DOI: 10.21533/pen.v10i6.3382

A. Al-Hilali, Laith F. Jumaa, Ibrahim A. Amory

引用次数: 0

Estimation of nonparametric regression function using shrinkage wavelet and different mother functions 用收缩小波和不同母函数估计非参数回归函数

Periodicals of Engineering and Natural Sciences Pub Date : 2022-12-31 DOI: 10.21533/pen.v10i6.3386

Saad Kadem Hamza, S. Ali

{"title":"Estimation of nonparametric regression function using shrinkage wavelet and different mother functions","authors":"Saad Kadem Hamza, S. Ali","doi":"10.21533/pen.v10i6.3386","DOIUrl":"https://doi.org/10.21533/pen.v10i6.3386","url":null,"abstract":"Wavelet reduction is one of the most widely used methods for removing noise from the signal, primarily financial and banking data, and building a non-parametric regression model that enables us to study the phenomenon accurately. The appropriate choice of the wavelet mother, which results in concentrating the bulk of the signal strength on a few wavelet coefficients, is one of the most determining factors in noise removal and obtaining accurate regression function estimates. Given the importance of studying the price index in Iraq, many mother functions within the wavelet transformation have been studied. To determine which of them is more suitable for such a type of data, which gives accurate estimates of the relationship between trading volume as an independent variable and the Iraq market index as a dependent variable, the best or most appropriate functions were determined through the estimates that have less (MSE). It became clear that the best or relevant parts are (Coif1, Coif5, and rbio1.3). The study was applied to real data represented by the trading volume and price index data for the Iraqi market for the period from (2008) to April (2022). It became clear that the trading volume significantly affects the price index, but other variables must be studied .","PeriodicalId":37519,"journal":{"name":"Periodicals of Engineering and Natural Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48535485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigating the potential of liquefaction issue of some Turkish dams during earthquakes 调查土耳其一些大坝在地震期间液化问题的可能性

Periodicals of Engineering and Natural Sciences Pub Date : 2022-12-31 DOI: 10.21533/pen.v10i6.3375

L. Mahmood, S. Naimi

{"title":"Investigating the potential of liquefaction issue of some Turkish dams during earthquakes","authors":"L. Mahmood, S. Naimi","doi":"10.21533/pen.v10i6.3375","DOIUrl":"https://doi.org/10.21533/pen.v10i6.3375","url":null,"abstract":"This research is carried out to investigate and assess the critical role of soil properties and their content in influencing the soil liquefaction phenomenon that takes place when an earthquake happens. A case study is considered in this work, representing the Karakaya Dam. Two research approaches were implemented to achieve the research goal, including extrapolation in Excel and numerical optimization using linear regression. The outputs revealed that the annual temperature in the future of zones around the Karakaya Dam, including Azami, Ortalama, and Asgari, would witness a moderate increase of about 3 to 6 degrees Celsius in the next decade. Moreover, the research confirmed that the Euphrates River discharge rate at the Karakaya Dam would witness a significant increase from (100-350 m 3 ) to (2,590-2,640 m 3 ) in 2029, explaining that temperature and discharge rate may influence the liquefaction. Meanwhile, the research outputs indicated that soil temperature under the Karakaya Dam and chemical elements would not vary significantly in the next decade. Notwithstanding, the pH number will change widely from 4.14 to 9.74 in 2029. Besides, the most significant chemical molecule concentration in the soil under the Karakaya Dam is the phosphite anion, corresponding to a minimum and maximum concentration of 1 and 2 μg/m 2 , respectively.","PeriodicalId":37519,"journal":{"name":"Periodicals of Engineering and Natural Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48996756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Histological and immunohistochemical study of thyroid gland in Caucasian squirrel (Sciurus anamalus) (Gmelin, 1778) by using marker (Anti-Thyroglobulin, Code IR5090) 用标记物(Anti-Thyroglobulin，代码IR5090)对高加索松鼠(Sciurus anamalus) (Gmelin, 1778)甲状腺的组织学和免疫组化研究

Periodicals of Engineering and Natural Sciences Pub Date : 2022-12-31 DOI: 10.21533/pen.v10i6.3383

N. M. J. Hammodi, Rana Alaa Al Aamery

{"title":"Histological and immunohistochemical study of thyroid gland in Caucasian squirrel (Sciurus anamalus) (Gmelin, 1778) by using marker (Anti-Thyroglobulin, Code IR5090)","authors":"N. M. J. Hammodi, Rana Alaa Al Aamery","doi":"10.21533/pen.v10i6.3383","DOIUrl":"https://doi.org/10.21533/pen.v10i6.3383","url":null,"abstract":"The current study is designed to investigate the histological and immunohistochemical characteristics of the thyroid gland in adult male Sciurus anamalus . This study found that the thyroid gland of the Caucasian squirrel is located in the neck area, below the larynx, on both sides of the trachea. It has two lobes (right and left) with cylindrical shape. The histological studies revealed that the thyroid gland is surrounded by a capsule which consists of connective tissue and forming of two layers which are outer layer and inner layer, and a layer of adipose tissue appears overlapping the outer layer. The inner tissue of the gland consists of follicles with different shapes and sizes, and is lined with simple cuboidal epithelial tissue (follicular cells). Sometimes it appears in the form of high or low cuboidal epithelial tissue, in dependent on the functional activity state of the gland, and the follicles cavities are filled with colloid. In addition, there are two kinds of cells spread in the gland tissue, follicular cells and parafollicular cells, and they are fewer in number and larger in size than follicular cells and appear either singly or in the form of clusters and occupy two sites between the follicles or within the follicle. Immunologically, the results observed an immune response to thyroglobulin antibodies to detect the protein secreted by the follicular cells, which in turn secreted it to the colloid. Moreover, the immune response appeared clear in the cell membrane of the follicular cells and the colloid through the appearance of the brown color which is specific to the immune reaction.","PeriodicalId":37519,"journal":{"name":"Periodicals of Engineering and Natural Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49011548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Antimicrobial resistance in aerobic bacterial isolates from broiler lungs 肉鸡肺中需氧细菌分离株的抗菌素耐药性

Periodicals of Engineering and Natural Sciences Pub Date : 2022-12-31 DOI: 10.21533/pen.v10i6.3380

Z. Ibrahim, Nawal S. Jaafer, Hadeel M. Fayyadh

{"title":"Antimicrobial resistance in aerobic bacterial isolates from broiler lungs","authors":"Z. Ibrahim, Nawal S. Jaafer, Hadeel M. Fayyadh","doi":"10.21533/pen.v10i6.3380","DOIUrl":"https://doi.org/10.21533/pen.v10i6.3380","url":null,"abstract":"Antibacterial resistant bacteria cause a big concern to poultry and to public health in general because some bacterial poultry pathogens can infect humans or transfer their resistance ability to human pathogens. Nontherapeutic use of antibacterial in poultry, especially as growth promoters to increase feed conversion efficiency is thought to be one of the main causes of resistance. The study included pulmonary swab samples collected during necropsy from 120 poultry farms showing respiratory symptoms with mortality. The disc diffusion method for antibiotic sensitivity testing was performed and antibiotic disks for 21 antibiotics were used. The results showed that three antibacterial were sensitive to more than 50% of the isolates. The first is doxycycline and 69.9% of the isolates were sensitive. The second is Cefalexin with 60.5% sensitive isolates and third is Chloramphenicol with 55.2% sensitive isolates. In the rest of antibacterial, less than 50% were sensitive. Five isolates were found resistant to all antibacterial. Moreover, three samples were found to be negative with no bacterial growth. The present study concluded that 50% of the aerobic bacteria isolated from poultry lungs are resistant to 85% of the 21 antibiotics tested in the study.","PeriodicalId":37519,"journal":{"name":"Periodicals of Engineering and Natural Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47425389","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of Gibberellic Acid and Naphthalene Acetic Acid on Axillary Shoot Multiplication in Hygrophila polysperma (Roxb.) T. Anderson 赤霉素酸和萘乙酸对喜水多精植物腋芽增殖的影响t·安德森

Periodicals of Engineering and Natural Sciences Pub Date : 2022-12-26 DOI: 10.28978/nesciences.1224554

M. Doğan

{"title":"Impact of Gibberellic Acid and Naphthalene Acetic Acid on Axillary Shoot Multiplication in Hygrophila polysperma (Roxb.) T. Anderson","authors":"M. Doğan","doi":"10.28978/nesciences.1224554","DOIUrl":"https://doi.org/10.28978/nesciences.1224554","url":null,"abstract":"In this work, axillary shoot regenerations were investigated from nodal explants of Hygrophila polysperma (Roxb.) T. Anderson in MS medium (Murashige and Skoog) including different combinations of Gibberellic Acid (GA3) and Naphthalene Acetic Acid (NAA). Nodal explants of H. polysperma were used in propagation studies. The 100% regeneration frequency was determined in MS plus 0.25 and 0.50 mg/L GA3 + 0.15 mg/L NAA. When the shoot numbers were examined, the best nutrient medium was determined as 0.25 mg/L GA3 + 0.15 mg/L NAA (14.72 shoots/explant). The best result in shoot length was reached in MS plus 0.50 mg/L GA3 + 0.15 mg/L NAA (1.91 cm). Then the longest shoot was determined as 1.79 cm in nutrient media plus 0.25 mg/L GA3 + 0.15 mg/L NAA. Longer shoots were obtained in GA3+NAA nutrient media according to control. When the results were examined, it was determined that the number and length of shoots decreased as the amount of GA3+NAA used in the culture medium increased. Regenerated shoots were rooted in MS media including 0.25 mg/L Indole-3-Acetic Acid and successfully acclimatized to aquarium conditions. As a result, multiple and rapid productions of H. polysperma under tissue culture conditions were achieved.","PeriodicalId":37519,"journal":{"name":"Periodicals of Engineering and Natural Sciences","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73360428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0