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2020

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Articles 31 - 60 of 13985

Full-Text Articles in Life Sciences

Latihan Bodyweight Dengan Total-Body Resistance Exercise (Trx) Dapat Meningkatkan Kekuatan Otot, Ahmad Nasrulloh, Iswadi Sigit Wicaksono Dec 2020

Latihan Bodyweight Dengan Total-Body Resistance Exercise (Trx) Dapat Meningkatkan Kekuatan Otot, Ahmad Nasrulloh, Iswadi Sigit Wicaksono

Jurnal Keolahragaan

Penelitian ini bertujuan untuk mengetahui pengaruh latihan bodyweight dengan Total-body Resistance Exercise (TRX) terhadap Peningkatan Kekuatan Otot. Penelitian ini menggunakan metode penelitian eksperimen. Desain penelitian dalam penelitian ini adalah menggunakan one-group pretest-posttest design. Subjek dalam penelitian ini adalah members The Fitlab Hotel Tara. Instrumen yang digunakan leg and back dynamometer untuk mengukur kekuatan otot tungkai dan punggung, hand grip dynamometer untuk mengukur kekuatan otot tangan, dan pull and push dynamometer untuk mengukur kekuatan menarik dan mendorong otot lengan. Teknik analisis data menggunakan uji hipotesis dengan analisis uji t (paired sample t test …

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Preliminary Active Tectonic Assessment Of Wadi Ghoweiba Catchment, Gulf Of Suez Rift, Egypt, Integration Of Remote Sensing, Tectonic Geomorphology, And Gis Techniques, Abdelrahman Khalifa Dec 2020

Preliminary Active Tectonic Assessment Of Wadi Ghoweiba Catchment, Gulf Of Suez Rift, Egypt, Integration Of Remote Sensing, Tectonic Geomorphology, And Gis Techniques, Abdelrahman Khalifa

Al-Azhar Bulletin of Science

The Wadi Ghoweiba catchment located at the northeastern part of the western coast of the Gulf of Suez, Egypt has been examined to evaluate the impact of tectonic activity remarks through a significant analysis of the morphotectonic indexes that were calculated using geographic information systems (GIS) technique. Four morphotectonic indexes, including mountain front sinuosity, valley floor width-to-valley height ratio, rock strength, and stream length gradient index were applied and processed for recognition of tectonic activity evidence. The results computed from theses indexes were combined to examine different fracture and/or fault segments of the catchment. The values of the measured morphotectonic …

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Evolution Of Island, Dominique Kongsli Dec 2020

Evolution Of Island, Dominique Kongsli

The STEAM Journal

Evolution of Island emerged from the depths of an ocean of blue paint. My process involves observation of nature: I remember scuba diving in Thailand in the Andaman Sea and having a spiritual experience underwater while observing Christmas-tree worms pop in and out of the coral.

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Animal-Human Art, Trace Johansson Dec 2020

Animal-Human Art, Trace Johansson

The STEAM Journal

Art work that shows the bond between animal and human

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What Can We Learn About Research Narratives From Professional Storytellers?, Kim Wilkins, Helen Marshall Dec 2020

What Can We Learn About Research Narratives From Professional Storytellers?, Kim Wilkins, Helen Marshall

The STEAM Journal

This short note on practice reflects on how “research narrative” is a much-used, but misunderstood term. Compelling stories about our research are important: for public-facing communications and for academic tenure confirmation and promotion. They are also important for researchers to gain a clearer sense of their own vision and values in the research process: they are not just a communication skill, they’re a career skill. But often researchers in STEM disciplines do not have the practical skills to write stories. We draw on our own practice as creative writers to share some simple and effective methods to bring arts expertise …

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Visual Arts Enhance Instruction In Observation And Analysis Of Microscopic Forms In Developmental And Cell Biology, Max Ezin, Christina Noravian, Amira Mahomed, Adam Lyle, Aveleen Gill, Tamira Elul Dec 2020

Visual Arts Enhance Instruction In Observation And Analysis Of Microscopic Forms In Developmental And Cell Biology, Max Ezin, Christina Noravian, Amira Mahomed, Adam Lyle, Aveleen Gill, Tamira Elul

The STEAM Journal

Two important skills for scientists in developmental and cell biology, as well as in fields such as neurobiology, histology and pathology, are: 1) observation of features and details in microscopic images of cells, and 2) quantification of cellular features observed in microscopic images. However, current training in developmental and cell biology does not emphasize observation and quantitative analysis of microscopic images, and it is unclear how best to teach students these skills. Here, we describe our experiences applying visual artistic approaches to instruct undergraduate and graduate students in how to observe and analyze cellular forms in microscopic images. At Loyola …

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Response Of Arid Grassland Community Standing Crop To Banning Grazing And Deferral Grazing Management, Zhijun Wei, Ruirui Yan, Hongmei Liu, Xiangjun Yun Dec 2020

Response Of Arid Grassland Community Standing Crop To Banning Grazing And Deferral Grazing Management, Zhijun Wei, Ruirui Yan, Hongmei Liu, Xiangjun Yun

IGC Proceedings (1997-2023)

No abstract provided.

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The Effect Of Climate Change On Livestock Carrying Capacity Of Inner Mongolia, Yurong Wei, Ruiqing Guo, Xuebiao Pan, Buju Long Dec 2020

The Effect Of Climate Change On Livestock Carrying Capacity Of Inner Mongolia, Yurong Wei, Ruiqing Guo, Xuebiao Pan, Buju Long

IGC Proceedings (1997-2023)

No abstract provided.

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Relationships Of Milk Production Of Beef Cows To Postweaning Gain Of Their Calves, X. Z. Wang, Michael A. Brown, F. Q. Gao, J. P. Wu Dec 2020

Relationships Of Milk Production Of Beef Cows To Postweaning Gain Of Their Calves, X. Z. Wang, Michael A. Brown, F. Q. Gao, J. P. Wu

IGC Proceedings (1997-2023)

No abstract provided.

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The Rangeland Resource Status And Its Variability In Zoige, Qinghai‐Tibetan Plateau, Qian Wang, Ning Wu, Peng Luo Dec 2020

The Rangeland Resource Status And Its Variability In Zoige, Qinghai‐Tibetan Plateau, Qian Wang, Ning Wu, Peng Luo

IGC Proceedings (1997-2023)

No abstract provided.

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Numerical Study To Evaluate The Performance Of Non-Uniform Stepped Spillway Using Ansys-Cfx, Shawnm M. Saleh, Sarhang M. Husain Dec 2020

Numerical Study To Evaluate The Performance Of Non-Uniform Stepped Spillway Using Ansys-Cfx, Shawnm M. Saleh, Sarhang M. Husain

Polytechnic Journal

The main features that attract hydraulic engineers for designing stepped spillways are their ability to lose a large portion of the flow energy and add or increase aeration to the flow naturally. Hence, smaller size stilling basin and no aeration device may require. This study aims to find the amount of energy dissipation rate and the location of inception point over non-uniform stepped spillway. The numerical 2D ANSYS-CFX code is applied to generate and run thirty-two models of different configurations using two different moderate slopes (1 V:2 H and 1 V:2.5 H) as most of the downstream slopes designed for …

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Simulation Of Mosul Dam Break Using Finite Volume Method, Ayhan H. Saleem, Jowhar R. Mohammad Dec 2020

Simulation Of Mosul Dam Break Using Finite Volume Method, Ayhan H. Saleem, Jowhar R. Mohammad

Polytechnic Journal

Mosul dam is an earth-fill embankment located north of Iraq on the Tigris River forming a reservoir with 11.11 km3 water storage capacity which is the largest dam in the country. The dam is built on a rock bed foundation, in which the dissolution process is dynamic in the zone where gypsum and anhydrite layers present. During the construction development seepage locations were found in the dam foundation and the grouting process is in progress until now to control this problem. Therefore, the possibility of the Mosul dam break is highlighted by previous studies. In this research, a FORTRAN code …

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Effect Of Straw Throwing Method And Some Operational Parameters On The Performance Of A Small Rectangular Baler, Affan O. Hussein Dec 2020

Effect Of Straw Throwing Method And Some Operational Parameters On The Performance Of A Small Rectangular Baler, Affan O. Hussein

Polytechnic Journal

The experiment was carried out on a private farm in Karak village in 2017 to study the effects of the method of throwing the straw behind the combine harvester and some operational factors on the performance of a small rectangular baler. The field was planted with wheat (Triticum spp.) and barley (Hordeum vulgare). A small rectangular baler type (Ćicoria 454), Italian made was used to pick up and bale the straws, which were thrown as heaps and windrows in the field. The results obtained showed that picking up the straw as windrows improved the baler’s performance over the heaps in …

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Prevalence Of Needlestick Injuries Among Healthcare Workers In Rizgary Teaching Hospital, Salah H. Ali, Peshtewan D. Majeed, Umed A. Huwiezy Dec 2020

Prevalence Of Needlestick Injuries Among Healthcare Workers In Rizgary Teaching Hospital, Salah H. Ali, Peshtewan D. Majeed, Umed A. Huwiezy

Polytechnic Journal

Needlestick injury in healthcare settings is a global issue. Despite being recognized for many years, needlestick and sharps injuries (NSIs) continue to present a risk of occupational exposure to blood-borne pathogens for health care works (HCWs). The objectives of the study were to determine the prevalence of needlestick injuries among HCWs in Rizgary Teaching Hospital and to identify the causes of needlestick injuries. A cross-sectional study was conducted on 76 healthcare workers in Rizgary Teaching hospital; there were a total of 45 males, 31 females. The data collections were administrated using face-to-face interviews to ensure a good response rate and …

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Evaluation Of Bond Strength And Dimensional Accuracy Of Soft Liner To Microwave Cured Denture Base Material, Shilan H. Fatah, Radhwan H. Hasan Dec 2020

Evaluation Of Bond Strength And Dimensional Accuracy Of Soft Liner To Microwave Cured Denture Base Material, Shilan H. Fatah, Radhwan H. Hasan

Polytechnic Journal

Today, soft liners are being widely used in dental practices by their application to the inner surfaces of the denture with hopes to evenly distribute any potential uneven forces, and to provide a cushion effect to the oral mucosa of the patient mouth. The aim of this study is to investigate the influence of (a) polymethylmethacrylate (PMMA) denture base material curing technique, (b) Molloplast B soft liner curing technique, and (c) PMMA surface treatment, on the “shear bond strength” (SBS) between the Molloplast B liner and PMMA. A total of 80 samples were used in this study to evaluate the …

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Geographic Information System For A Small Basin In Balakayety Watershade, Kurdistan Region Of Iraq, Jehan M. Fattah Sheikh Suleimany Dec 2020

Geographic Information System For A Small Basin In Balakayety Watershade, Kurdistan Region Of Iraq, Jehan M. Fattah Sheikh Suleimany

Polytechnic Journal

Runoff coefficient is an index for losses in rainfall required in most hydrological models and water resources projects. Generally, in the Balakayety water shade in Kurdistan region of Iraq, no runoff data are available as almost basins are ungagged. The Geographic Information System (GIS) techniques and available data for a small basin in Balakayety watershed within the Erbil governorate (Kurdistan Region of Iraq) were used to estimate the coefficient of potential runoff coefficient (PRC). The estimated PRC will be then used to calculate the depth of runoff. The Satellite Imagery (Landsat 7 ETM+) for 2015 was procured to create land …

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Effects Of Dam Gate Geometry On Pressure Variation Aided By Map Presentation, Sheeraz M. Ameen, Thamir M. Ahmed Dec 2020

Effects Of Dam Gate Geometry On Pressure Variation Aided By Map Presentation, Sheeraz M. Ameen, Thamir M. Ahmed

Polytechnic Journal

The dam vertical lift gate is one of the most important operational parts that regulate the high head water flow to power plants as well as satisfying the water needs for projects and areas downstream of the dam. Due to the high water levels in the dam reservoir, the gates are subjected to many hydrostatic and dynamic pressures that affect their performance and stability. Hence, it became necessary to study all parameters that may cause excessive pressures which may lead to reduce the gate performance efficiency or even cause failure. In the current study, the pressure distribution along the bottom …

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Biocompatibility Of Styrene-Butadiene Copolymer-Modified Calcium Phosphate And Mineral Trioxide Aggregate : A Comparative Histological Study, Hala B. Kaka., Raid F. Salman Dec 2020

Biocompatibility Of Styrene-Butadiene Copolymer-Modified Calcium Phosphate And Mineral Trioxide Aggregate : A Comparative Histological Study, Hala B. Kaka., Raid F. Salman

Polytechnic Journal

The biocompatibility of root canal filling material is one of the basic conditions for a successful endodontic treatment and healing of the periodontium. This study was aimed to evaluate the biocompatibility of calcium phosphate cement modified with the styrene-butadiene copolymer-modified calcium phosphate (mCPC) by its implantation in the subcutaneous tissue of rabbit. Fifteen female rabbits of comparable weight were used in this study, each one had received three different tubes; one containing mCPC, the other with mineral trioxide aggregate Fillapex, and an empty control tube on the subcutaneous tissue of thighs. After a definite time (3, 7,and 14 days), the …

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Association Between Smartphone Addiction And Physical Activity, Sleeping Hours Among Medical Science Students In Duhok City, Rebar Y. Abdullah, Kawther M. Galary, Robar A. Majid Dec 2020

Association Between Smartphone Addiction And Physical Activity, Sleeping Hours Among Medical Science Students In Duhok City, Rebar Y. Abdullah, Kawther M. Galary, Robar A. Majid

Polytechnic Journal

Background and Aim: Smartphones become a part of today’s life. In spite of the convenience, it contributes to our daily lives and activities, one of the most important problems is smartphone addiction. As known, smartphone addiction is a type of technological addiction or non-substance addiction. The present study is to investigate the association between smartphone addiction and physical activity, sleeping hours among medical science students in Duhok City.Subjects and Methods: A cross-sectional study design carried out with 295 students in medical science colleges in the Duhok City of both gender. Self-reported data collected from December 15, 2019, to January 22, …

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Root Dentine Strain Generation During Root Canal Instrumentation With Rotation And Reciprocation Motions, Bnar O. Hamafaraj, Raed F. Salman Dec 2020

Root Dentine Strain Generation During Root Canal Instrumentation With Rotation And Reciprocation Motions, Bnar O. Hamafaraj, Raed F. Salman

Polytechnic Journal

The aim of the study is to measure and compare strain generated on root dentine surface by two different instrumentation motions. Thirty extracted single canal premolars were used in this study which randomly was divided into two groups, one group was prepared with ProTaper NEXT X2 file in rotation motion, and the second group was prepared by WaveOne GOLD primary file in reciprocation motion, the canals were irrigated during canal preparation by 2 ml of sodium hypochlorite and 17% EDTA gel was used. Strain measurement was performed by strain gauges and a digital strain output reader, data were recorded every …

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Association Of Lipid Profile With Body Mass Index In Public Employees In Halabja City, Kurdistan Region Of Iraq, Hardi R. Baqi, Tareq H. Abdullah, Salar H. Karim, Dashty A. Ghafor Dec 2020

Association Of Lipid Profile With Body Mass Index In Public Employees In Halabja City, Kurdistan Region Of Iraq, Hardi R. Baqi, Tareq H. Abdullah, Salar H. Karim, Dashty A. Ghafor

Polytechnic Journal

Obesity and overweight are extensive phenomena that reached epidemics extent worldwide, including the Kurdistan region of Iraq. The aim of this study is to evaluate the values of total cholesterol (TC), triglycerides (TG), low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), body mass index (BMI), and the state of physical activity in Halabja’s public employees. Overall 355 adults aged from 19 to 63 including 246 males and 109 females contributed to the study. The lipid profiles were tested in all subjects after over-night fasting. In addition, anthropometry measurements were taken; the mean height for males is 1.7129 m and 1.5732 …

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Prevalence And Distribution Of Oral Conditions Among Dental Out Patients Children Aged 0–13 Years Attending Khanzad Polyclinic Center In Erbil City, Banaz A. Abdullah, Shaheen A. Ahmed, Ali F. Mohammad Alzubaidee Dec 2020

Prevalence And Distribution Of Oral Conditions Among Dental Out Patients Children Aged 0–13 Years Attending Khanzad Polyclinic Center In Erbil City, Banaz A. Abdullah, Shaheen A. Ahmed, Ali F. Mohammad Alzubaidee

Polytechnic Journal

Prevalence studies on oral conditions affecting children are rare worldwide, and none of them was conducted in in Erbil/Kurdistan region/Iraq. The aims in the this study were to determine the prevalence and distribution of oral conditions which include both lesions and normal variations in group of patients referred to a main, public specialized poly clinics dental center.A prospective cross-sectional study was performed, the including data collected were age, gender, and site of a condition. The examination of the patients was performed under standardized conditions; using artificial light, disposable gloves, retractors, and mirror with sterile gauze to hold tip of the …

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Bolton Ratio Of Different Angle’S Classifications In A School Children Sample Of Erbil City: A Cross‑Sectional Study, Hasan S. Hasan, Amanj R. Ibrahim, Zana Q. Omer, Walaa M. Saleem Almola Dec 2020

Bolton Ratio Of Different Angle’S Classifications In A School Children Sample Of Erbil City: A Cross‑Sectional Study, Hasan S. Hasan, Amanj R. Ibrahim, Zana Q. Omer, Walaa M. Saleem Almola

Polytechnic Journal

Aims of this study were to determine both the Bolton anterior and overall ratios in a representative sample of Erbil schoolchildren of Normal occlusion and Cl I, Cl II div I, div II, and Cl III malocclusion, also to find if there are any gender differences. Numerical data were obtained, comprised of 320 samples study casts of students with a mean age of 13–15 years selected from different schools in Erbil City. The casts were divided into 5 groups according to the type of malocclusion: Normal (n = 64), Cl I (n = 64), Class II div I (n = …

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Prevalence And Phylogenetic Analysis Of Babesia Ovis Isolated From Sheep And Goats In Erbil Province, Kurdistan Region- Iraq, Zuber I. Hassan Dec 2020

Prevalence And Phylogenetic Analysis Of Babesia Ovis Isolated From Sheep And Goats In Erbil Province, Kurdistan Region- Iraq, Zuber I. Hassan

Polytechnic Journal

A total of 143 blood smears were obtained from sheep and goats (n = 98) and (n = 45), respectively, by jugular venipuncture between February 2019 and December 2019. Samples were examined for parasite occurrences. Results reveal that the prevalence of infection by the parasite was 12.24% and 11.11%, respectively (microscopically), while 20.41% sheep and 17.78% goats (molecular-based identification using 18S SSU rRNA sequence). Both methods revealed the specificity and sensitivity of the diagnostic assays. Phylogenetic analysis of Babesia ovis (MN309736-MN309745) displays that the pathogens identified in this study are clustered together, which indicating similar molecular characteristics. Overall, these results …

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Micro-Computed Tomographic Evaluation Of Sealing Ability Of Different Bioceramic Endodontic Sealers: An In Vitro Study, Saya H. Raouf, Dara H. Saeed Dec 2020

Micro-Computed Tomographic Evaluation Of Sealing Ability Of Different Bioceramic Endodontic Sealers: An In Vitro Study, Saya H. Raouf, Dara H. Saeed

Polytechnic Journal

The aim of the present study was to compare sealing ability of three bioceramic sealers, including Endosequence BC and BioRoot RCS, with bioceramic-coated gutta-percha cone (BCGP) or GP in comparison to a clinical reference standard AH Plus sealer using high-resolution micro-computed tomography (micro-CT) analysis. Fifty freshly extracted single canal premolars were included in the study. All the samples were prepared using 2 Shape rotary system TS1 (25/0.04), TS2 (25/0.06), and F35 (35/0.06) file. After completion of the instrumentation, the samples were randomly divided based on the sealer material used and GP into four experimental groups and one control group with …

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Three-Dimensional Surface Evaluation And Shear Bond Strength Of Three Pre-Treatment E-Max Surfaces For Metal And Ceramic Orthodontic Brackets (In Vitro Study), Huda A. Mohammed, Omar S. Ali Dec 2020

Three-Dimensional Surface Evaluation And Shear Bond Strength Of Three Pre-Treatment E-Max Surfaces For Metal And Ceramic Orthodontic Brackets (In Vitro Study), Huda A. Mohammed, Omar S. Ali

Polytechnic Journal

3D evaluation and shear bond strength (SBS) for metal and ceramic brackets after three pre-treatment surfaces of lithium disilicate (LD) crowns. Sixty lithium disilicate (LD) crowns were fabricated in laboratory according to manufacturer instruction and then divided into six groups (three groups for metal brackets and three groups for ceramic one). The 1st group for both was treated with round diamond bur, the 2nd one by hydrofluoric acid (HFA) 9.0%, and the 3rd group by laser (Er,Cr:YSGG). All treated surfaces were examined by laser profilometer and scan electron microscope. The Scotchbond Universal Adhesive and Transbond XT were used for bracketing …

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Molecular Identification And Antibacterial Activity Of Streptomyces Spp. Isolated From Sulaymaniyah Governorate Soil, Iraqi Kurdistan, Syamand A. Qadir, Osama H. Shareef, Othman A. Mohammed Dec 2020

Molecular Identification And Antibacterial Activity Of Streptomyces Spp. Isolated From Sulaymaniyah Governorate Soil, Iraqi Kurdistan, Syamand A. Qadir, Osama H. Shareef, Othman A. Mohammed

Polytechnic Journal

Soil is play an important role for reserve abundant groups of microorganisms, especially Streptomyces. Streptomyces are recognized as prokaryotes, aerobic and Gram-positive bacteria with high Guanine + Cytosine contents in their DNA. These groups of bacteria show filamentous growth from a single spore and they are normally found in all kinds of ecosystems, including water, soil, and plants. A total of three Streptomyces strains were isolated from soil of the sides of Darband Ranya in Sulaimani governorate. Different approaches were followed for the identification of the isolated stains. Morphological and cultural properties of these isolates have shown that the isolates …

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Influences Of Polymer Modifiers On Porous Hot Asphalt Mixture Property And Durability, Mohammed Q. Ali, Ganjeen J. Khoshnaw Dec 2020

Influences Of Polymer Modifiers On Porous Hot Asphalt Mixture Property And Durability, Mohammed Q. Ali, Ganjeen J. Khoshnaw

Polytechnic Journal

Fundamentally, sustainability and cost-effectiveness in infrastructure development have received widespread attention. Permeable pavement is such a concept that it is sustainable in the field of transportation and is being tested. Fully permeable pavement is a modern design method in which each layer is porous and can store water, avoiding the impact of stormwater on the pavement to avoid stormwater, skidding, floods, and water splash on the road and parking area which decrease safety rate. Porous asphalt (PA) is an asphalt mixture with a little or no fine aggregate. Due to open structures and advantages are used as a drainage layer …

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Effect Of Adding Magnesium Oxide Nanoparticles On The Antimicrobial Activity Of A Denture Soft Liner, Hoshang Kh. Abdel-Rahman,, Salem A. Alem Al-Sammaraie Dec 2020

Effect Of Adding Magnesium Oxide Nanoparticles On The Antimicrobial Activity Of A Denture Soft Liner, Hoshang Kh. Abdel-Rahman,, Salem A. Alem Al-Sammaraie

Polytechnic Journal

Microbial growth and colonization are one of the disadvantages after the long-term use of denture soft liners. This study was aimed to evaluate the effect of the addition of magnesium oxide nanoparticles (MgONPs) on the antimicrobial activity of a denture soft liner. A total of 84 samples were prepared from a soft denture liner and divided into two groups, control group and test group to which 3% by weight of MgONPs were added, antimicrobial tests for Candida albicans, Staphylococcus aureus,and a mixture of the biofilm of both microorganisms were done, cell density count and adherence assay test was recorded before …

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Numerical Analysis Of Breast Cancer Cell With Gold Nanoparticles Necrosis By Laser Hyperthermia, Shna A. Karim, Yousif M. Hassan Dec 2020

Numerical Analysis Of Breast Cancer Cell With Gold Nanoparticles Necrosis By Laser Hyperthermia, Shna A. Karim, Yousif M. Hassan

Polytechnic Journal

Laser hyperthermia treatment of cancer tissue is widely used in cancer treatment to destroy cancer cells. This study focus on the mechanisms of heat transfer in biological tissues to minimize damage to the tissues resulting from extra heat applied. The important feature of this method is heating of specific region to raise its temperature to a threshold temperature and destroying cancer cells without to destroy surrounding tissue. In this study, we have used the combinations of laser light and gold nanoparticles to investigate the influence of nanoparticles on the spatial distribution of temperature in the tumor and healthy tissues. Accurate …

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