This study was designed to compare between the stress protein HSP70immunoexpression in the urinary bladder cancer (UBC) and bladder benign tumor(BT) , and to show the association between its immunoexpression and the clinicalgrades in bladder cancer . Paraffin Sections tissues from 50- bladder cancer tissuesand 15-bladder benign tumor tissues included in this study, Immunohistochemicaltechnique was done to detect the immunostaining of stress protein HSP-70 . Theresults indicated that (HSP70) proteins were significantly high expressed in BCcompared with BT patients HSP70 (74 % versus 33.3 % ; p≤ 0.01) , and thepatients with high grades cancer assume elevated positive IHC results compare topatients with low grades cancer with significant difference (p≤ 0.01) .Accordingly,HSP70 can be investigated as an omen biomarker in bladder cancer .Key Words: HSP70, IHC, Bladder Tumors.
{"title":"Stress Protein Expression in Bladder Tumors Tissues","authors":"Hind M. Mousa, A. Jassem, M. Hussain","doi":"10.24271/GARMIAN.145","DOIUrl":"https://doi.org/10.24271/GARMIAN.145","url":null,"abstract":"This study was designed to compare between the stress protein HSP70immunoexpression in the urinary bladder cancer (UBC) and bladder benign tumor(BT) , and to show the association between its immunoexpression and the clinicalgrades in bladder cancer . Paraffin Sections tissues from 50- bladder cancer tissuesand 15-bladder benign tumor tissues included in this study, Immunohistochemicaltechnique was done to detect the immunostaining of stress protein HSP-70 . Theresults indicated that (HSP70) proteins were significantly high expressed in BCcompared with BT patients HSP70 (74 % versus 33.3 % ; p≤ 0.01) , and thepatients with high grades cancer assume elevated positive IHC results compare topatients with low grades cancer with significant difference (p≤ 0.01) .Accordingly,HSP70 can be investigated as an omen biomarker in bladder cancer .Key Words: HSP70, IHC, Bladder Tumors.","PeriodicalId":12283,"journal":{"name":"Evaluation Study of Three Diagnostic Methods for Helicobacter pylori Infection","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79692067","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}
Groundwater is regarded as one of the main water sources in a number ofcountries in the world to supply cities and urban areas with water for domestic,agricultural and industrial uses. That is because of lack of surface water andrainfall quantities. Therefore, the levels and quantities of groundwater should beobserved regularly. The quality of groundwater is mainly influenced by theeffects of anthropogenic sources. The aim of this study is to evaluate the qualityof groundwater in Kifri district. In this case fifteen groundwater samples werecollected at identical locations from deeper wells in order to investigate theirquality parameters such as: pH, Electric conductivity, total dissolved solids,concentration of soluble ions and some others. The results of the concentrationswere measured and interpreted with some irrigation indexes such as sodiumpercent (SP), sodium adsorption ratio (SAR), residual sodium carbonate (RSC),magnesium hazard (MH%), and Kelly’s ratio (KR).The results reveal that all of groundwater samples have SAR less than(10); it is indicating water class to be of excellent quality. Also, all the sampleshave RSC less than the permissible (1.5). However, it is observed that (6.67 %)of the samples have MH ratio values greater than (50). Presence of moremagnesium in irrigation water compared to calcium leads to increase the degreeof magnesium saturation thus decrease soil productivity. The results also revealthat the samples have values of (SP) less than (60%). Overall, it indicates thatthe quality of (93.33%) of the samples falling under excellent category forirrigation purposes.
{"title":"Assessment of groundwater quality and its suitability for agricultural uses in Kifri","authors":"A. Sarhat","doi":"10.24271/garmian.143","DOIUrl":"https://doi.org/10.24271/garmian.143","url":null,"abstract":"Groundwater is regarded as one of the main water sources in a number ofcountries in the world to supply cities and urban areas with water for domestic,agricultural and industrial uses. That is because of lack of surface water andrainfall quantities. Therefore, the levels and quantities of groundwater should beobserved regularly. The quality of groundwater is mainly influenced by theeffects of anthropogenic sources. The aim of this study is to evaluate the qualityof groundwater in Kifri district. In this case fifteen groundwater samples werecollected at identical locations from deeper wells in order to investigate theirquality parameters such as: pH, Electric conductivity, total dissolved solids,concentration of soluble ions and some others. The results of the concentrationswere measured and interpreted with some irrigation indexes such as sodiumpercent (SP), sodium adsorption ratio (SAR), residual sodium carbonate (RSC),magnesium hazard (MH%), and Kelly’s ratio (KR).The results reveal that all of groundwater samples have SAR less than(10); it is indicating water class to be of excellent quality. Also, all the sampleshave RSC less than the permissible (1.5). However, it is observed that (6.67 %)of the samples have MH ratio values greater than (50). Presence of moremagnesium in irrigation water compared to calcium leads to increase the degreeof magnesium saturation thus decrease soil productivity. The results also revealthat the samples have values of (SP) less than (60%). Overall, it indicates thatthe quality of (93.33%) of the samples falling under excellent category forirrigation purposes.","PeriodicalId":12283,"journal":{"name":"Evaluation Study of Three Diagnostic Methods for Helicobacter pylori Infection","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79696693","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}
Building nanoparticles of Aluminum phosphide (AlP) have been prepared byDensity functional theory method. These particles have been built on thediamondoids structures by raising carbon atoms and put atoms equivalent atomicnumber. Atomic number for Aluminum is (13) and Phosphorus is (15). It can beused these structures to the drug delivery .Depend on electronic structure andvibration properties of AlP nanocrystal. In order to full investigate, gap energy,electrostatic potential, density of states, tetrahedral angle, dihedral angle, bondlength, IR intensity, Raman spectrum. The results show that AlP diamondoids arenano-particles, structural properties as close as possible to those of bulkzincblende structure. The values of the energy gap diamantine is (3.5 eV) withrespect to the bulk value (2.5 eV). The green color signifies the neutralelectrostatic potential. This means that diamantane insulating material and thishelps us in the bonding process with the drug without that interact with anymedication is delivery medicine to the affected places. Dihedral and tetrahedralangles in AlP-diamantane near ideal bulk zincblende value of this angle valuesreflect the stability of diamondoids structures which is useful for our study to getthe inert and no harm structures after bonding there with different drugs to use itas drugs carriers. The bond lengths in AlP-diamantane found at 2.38 A and theexperimental value of AlP bulk bond length at 2.293 A. IR intensity ofdiamondoids divided into two regions depending on the properties of vibration orthe gap separation them and Raman spectrum active. UV Visible spectrum ofdiamondoids structure the Excitation energy equal to (1.8849 eV), the wavelength Absorption is (657.79 nm).
{"title":"Building nanoparticles using diamondoids structures as a carrier of the drug: Density functional theory study","authors":"Huda M. Jawad","doi":"10.24271/GARMIAN.136","DOIUrl":"https://doi.org/10.24271/GARMIAN.136","url":null,"abstract":"Building nanoparticles of Aluminum phosphide (AlP) have been prepared byDensity functional theory method. These particles have been built on thediamondoids structures by raising carbon atoms and put atoms equivalent atomicnumber. Atomic number for Aluminum is (13) and Phosphorus is (15). It can beused these structures to the drug delivery .Depend on electronic structure andvibration properties of AlP nanocrystal. In order to full investigate, gap energy,electrostatic potential, density of states, tetrahedral angle, dihedral angle, bondlength, IR intensity, Raman spectrum. The results show that AlP diamondoids arenano-particles, structural properties as close as possible to those of bulkzincblende structure. The values of the energy gap diamantine is (3.5 eV) withrespect to the bulk value (2.5 eV). The green color signifies the neutralelectrostatic potential. This means that diamantane insulating material and thishelps us in the bonding process with the drug without that interact with anymedication is delivery medicine to the affected places. Dihedral and tetrahedralangles in AlP-diamantane near ideal bulk zincblende value of this angle valuesreflect the stability of diamondoids structures which is useful for our study to getthe inert and no harm structures after bonding there with different drugs to use itas drugs carriers. The bond lengths in AlP-diamantane found at 2.38 A and theexperimental value of AlP bulk bond length at 2.293 A. IR intensity ofdiamondoids divided into two regions depending on the properties of vibration orthe gap separation them and Raman spectrum active. UV Visible spectrum ofdiamondoids structure the Excitation energy equal to (1.8849 eV), the wavelength Absorption is (657.79 nm).","PeriodicalId":12283,"journal":{"name":"Evaluation Study of Three Diagnostic Methods for Helicobacter pylori Infection","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81301342","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}
In this paper, some types of continuous functions via s-operations are introduced such as Contra -Continuous Functions and investigated. Several properties of these functions are constructed.
本文引入了一些通过s运算的连续函数，如反连续函数，并对其进行了研究。构造了这些函数的几个性质。
{"title":"Contra (ʎ-ʏ)*-Continuous Functions","authors":"Sarhad F. Namiq","doi":"10.24271/GARMIAN.127","DOIUrl":"https://doi.org/10.24271/GARMIAN.127","url":null,"abstract":"In this paper, some types of continuous functions via s-operations are introduced such as Contra -Continuous Functions and investigated. Several properties of these functions are constructed.","PeriodicalId":12283,"journal":{"name":"Evaluation Study of Three Diagnostic Methods for Helicobacter pylori Infection","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86102294","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}
In the present study; a one-pot three component reaction between4(4'-chlorobenzyloxy)acetophenone , thiosemicarbazide and different substituted benzaldehydes in absolute ethanolunder reflux with stirring has been used to give a new series of pyrazoline derivatives {3-(4-[4'-chlorobenzyloxy)phenyl)-5-(substituted-phenyl]-4,5-dihydropyrazole-1-carbothioamide}in highyields and short reaction times. . The later compounds were converted to their correspondingthiazole derivatives through reacting with 4-bromophenacyl bromide in ethanol. , The structures of the newly synthesized compounds were identified on the bases of their FT-IR, 1H-NMR, 13C-NMR and DEPT-135 spectra.
{"title":"Synthesis of Some New Pyrazolines via One-Pot Three Component Technique and Their Corresponding Thiazole Compounds","authors":"R. H. H. Salih, F. Hawaiz","doi":"10.24271/GARMIAN.159","DOIUrl":"https://doi.org/10.24271/GARMIAN.159","url":null,"abstract":"In the present study; a one-pot three component reaction between4(4'-chlorobenzyloxy)acetophenone , thiosemicarbazide and different substituted benzaldehydes in absolute ethanolunder reflux with stirring has been used to give a new series of pyrazoline derivatives {3-(4-[4'-chlorobenzyloxy)phenyl)-5-(substituted-phenyl]-4,5-dihydropyrazole-1-carbothioamide}in highyields and short reaction times. . The later compounds were converted to their correspondingthiazole derivatives through reacting with 4-bromophenacyl bromide in ethanol. , The structures of the newly synthesized compounds were identified on the bases of their FT-IR, 1H-NMR, 13C-NMR and DEPT-135 spectra.","PeriodicalId":12283,"journal":{"name":"Evaluation Study of Three Diagnostic Methods for Helicobacter pylori Infection","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76957875","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}
In this paper we recognize maximal (k, n)-arcs in the projective plane PG (2,5), n = 2, 3, ...,5, where a (k, n)-arc K in a projective plane is a set of K pointssuch that no n + 1 of which are collinear. A (k, n) – arc is a maximal if and only ifevery line in the projective plane PG (2, P) is a O-secant, or n-secant, whichrepresented as ( k, 2 )-arc and (k, 6)-arc. A (k, n)-arc is complete if it is notcontained in a (k + 1, n) – arc.
{"title":"Maximal (k, n)-arc in Projective Plane PG(2, 5)","authors":"Najim Ismaeel","doi":"10.24271/GARMIAN.129","DOIUrl":"https://doi.org/10.24271/GARMIAN.129","url":null,"abstract":"In this paper we recognize maximal (k, n)-arcs in the projective plane PG (2,5), n = 2, 3, ...,5, where a (k, n)-arc K in a projective plane is a set of K pointssuch that no n + 1 of which are collinear. A (k, n) – arc is a maximal if and only ifevery line in the projective plane PG (2, P) is a O-secant, or n-secant, whichrepresented as ( k, 2 )-arc and (k, 6)-arc. A (k, n)-arc is complete if it is notcontained in a (k + 1, n) – arc.","PeriodicalId":12283,"journal":{"name":"Evaluation Study of Three Diagnostic Methods for Helicobacter pylori Infection","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81307209","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}
New relationship between Hormones and Antioxidants has been proposed. The levelsof several hormones correlate well with different Antioxidants activities in different tissues.The study conducted to find a relationship between serum male reproductive hormonesandsemen Antioxidantlevels and sperm activity.Samples of infertile group consist of Asthenozoospermia ASZ (n=31) and healthy fertile menas a control (n=24). The patients have been selected and examined according to (W.H.O2010) semen analysis manual criteria. In addition th biochemical analysis of seminal plasmaincluding (Total antioxidant capacity TAC, Glutathione Reductase GRD, glutathione andMalondialdehyde MDA) and serum (LH, FSH and Testosterone) were assayed for eachsample.Results show a decrease in TAC level of ASZ group as compared to control (439.1±207.9 and834.5±253.7 μM), and a significant decrease in seminal glutathione levels of (127.77±59.08and 174.12±61.25 μM) respectively, and show an increase in MDA level (131.45±119.61 and44.13±13.07 nmol/ml) respectively, while no significant difference in GRD level(24.00±17.69 and 16.02± 9.66 U/mL) respectively. Also there is an increase in LH and FSHhormones level (5.26±2.92, 5.81±5.46 mIU/ml), in ASZ as compared to control (2.29±1.15,1.970±1.547 IU/ml) respectively, and no significance difference in the testosterone level(5.60±1.92 and 4.35±1.65 ng/mL).
{"title":"Impact of Male Reproductive Hormones on Sperm Activity via Regulation of Semen Antioxidant Levels","authors":"A. Palani","doi":"10.24271/GARMIAN.158","DOIUrl":"https://doi.org/10.24271/GARMIAN.158","url":null,"abstract":"New relationship between Hormones and Antioxidants has been proposed. The levelsof several hormones correlate well with different Antioxidants activities in different tissues.The study conducted to find a relationship between serum male reproductive hormonesandsemen Antioxidantlevels and sperm activity.Samples of infertile group consist of Asthenozoospermia ASZ (n=31) and healthy fertile menas a control (n=24). The patients have been selected and examined according to (W.H.O2010) semen analysis manual criteria. In addition th biochemical analysis of seminal plasmaincluding (Total antioxidant capacity TAC, Glutathione Reductase GRD, glutathione andMalondialdehyde MDA) and serum (LH, FSH and Testosterone) were assayed for eachsample.Results show a decrease in TAC level of ASZ group as compared to control (439.1±207.9 and834.5±253.7 μM), and a significant decrease in seminal glutathione levels of (127.77±59.08and 174.12±61.25 μM) respectively, and show an increase in MDA level (131.45±119.61 and44.13±13.07 nmol/ml) respectively, while no significant difference in GRD level(24.00±17.69 and 16.02± 9.66 U/mL) respectively. Also there is an increase in LH and FSHhormones level (5.26±2.92, 5.81±5.46 mIU/ml), in ASZ as compared to control (2.29±1.15,1.970±1.547 IU/ml) respectively, and no significance difference in the testosterone level(5.60±1.92 and 4.35±1.65 ng/mL).","PeriodicalId":12283,"journal":{"name":"Evaluation Study of Three Diagnostic Methods for Helicobacter pylori Infection","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81718518","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}
Ionic liquids with discrete anions are deep eutectic solvents can be utilized formetals electroplating. In this investigation various types of deep eutecticsolvents have been utilized such as Reline, Ethaline and Hybrid as solvents forthe electrodeposition of Sn, Zn and Zn-Sn alloys. Ethaline and Reline displayedidentical voltammetric profiles for the reduction of Zn+2 and Sn+2. Relinepossess high viscosity which lead to decreasing the quality of electroplating,therefore the process needs higher temperature or longer electroplating time.The surface morphology and compositions have been characterized usingscanning electron microscopy (SEM) and elemental analysis by energydispersive X-ray Spectroscopy (EDX). These techniques lead to detecting themetal alloy that have been added to the ionic liquids. Pure ionic liquidspreparation was another aim of this investigation, which utilized as a standardscale for comparison with the metal based liquids. Analysis of cyclicvoltammetry in all systems indicated differences in the reactivity and mobility ofspecies in solution which affected the growth mechanism and resulted inchanges in deposit morphology.
{"title":"Electrodeposition of metals and their alloys using different deep eutectic solvents based on choline chloride","authors":"M. M. Zankana, Azeez Abdullah Barzinjy","doi":"10.24271/GARMIAN.156","DOIUrl":"https://doi.org/10.24271/GARMIAN.156","url":null,"abstract":"Ionic liquids with discrete anions are deep eutectic solvents can be utilized formetals electroplating. In this investigation various types of deep eutecticsolvents have been utilized such as Reline, Ethaline and Hybrid as solvents forthe electrodeposition of Sn, Zn and Zn-Sn alloys. Ethaline and Reline displayedidentical voltammetric profiles for the reduction of Zn+2 and Sn+2. Relinepossess high viscosity which lead to decreasing the quality of electroplating,therefore the process needs higher temperature or longer electroplating time.The surface morphology and compositions have been characterized usingscanning electron microscopy (SEM) and elemental analysis by energydispersive X-ray Spectroscopy (EDX). These techniques lead to detecting themetal alloy that have been added to the ionic liquids. Pure ionic liquidspreparation was another aim of this investigation, which utilized as a standardscale for comparison with the metal based liquids. Analysis of cyclicvoltammetry in all systems indicated differences in the reactivity and mobility ofspecies in solution which affected the growth mechanism and resulted inchanges in deposit morphology.","PeriodicalId":12283,"journal":{"name":"Evaluation Study of Three Diagnostic Methods for Helicobacter pylori Infection","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80469919","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}
{"title":"Investigation of Total Branching Ratio and the Lepton Polarization Asymmetries in Bs → ϕℓ+ℓ− Decay with the Fourth-Generation SM","authors":"H. Mehranfar","doi":"10.24271/GARMIAN.171","DOIUrl":"https://doi.org/10.24271/GARMIAN.171","url":null,"abstract":"","PeriodicalId":12283,"journal":{"name":"Evaluation Study of Three Diagnostic Methods for Helicobacter pylori Infection","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79359436","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}
S. A. Salman, Sheahab A Z Al-jubouri, Haydar A Al-obaidy
In this work, physical phenomena related to the growth and phase formation of aluminapowder are investigated by experiments and computer calculations. The specimens were formedby slip casting technique. These specimens were fired at various temperatures (500, 1100 and1600) °C. Alumina samples with different dopant percentages were prepared to study theirvarious physical and mechanical properties. Before casting, slurries with (60 wt. %) solid contentand different percentages of dopant additions were prepared. The dopant used here is kaolinitewith (0, 5, 10 and 15) percentage addition, where kaolinite is one of many types of raw materialsthat have plasticity and advantage of securing. Sodium carboxymethylcellulose (Na-CMC)solution was used as dispersant. The stability of the slip clearly depends on the percentage ofdispersant added and the best ratio is found to be (0.33 ml) for each gram of solids. Kaolinitepercentage increase leads to decreasing the porosity and water absorption but it leads to increasedensity, thermal conductivity and all the mechanical properties.
{"title":"Studying the Effects of Kaolinite Additions on the Properties of Ceramic Bodies Prepared from Alumina Powder by Slip Casting Technique","authors":"S. A. Salman, Sheahab A Z Al-jubouri, Haydar A Al-obaidy","doi":"10.24271/GARMIAN.141","DOIUrl":"https://doi.org/10.24271/GARMIAN.141","url":null,"abstract":"In this work, physical phenomena related to the growth and phase formation of aluminapowder are investigated by experiments and computer calculations. The specimens were formedby slip casting technique. These specimens were fired at various temperatures (500, 1100 and1600) °C. Alumina samples with different dopant percentages were prepared to study theirvarious physical and mechanical properties. Before casting, slurries with (60 wt. %) solid contentand different percentages of dopant additions were prepared. The dopant used here is kaolinitewith (0, 5, 10 and 15) percentage addition, where kaolinite is one of many types of raw materialsthat have plasticity and advantage of securing. Sodium carboxymethylcellulose (Na-CMC)solution was used as dispersant. The stability of the slip clearly depends on the percentage ofdispersant added and the best ratio is found to be (0.33 ml) for each gram of solids. Kaolinitepercentage increase leads to decreasing the porosity and water absorption but it leads to increasedensity, thermal conductivity and all the mechanical properties.","PeriodicalId":12283,"journal":{"name":"Evaluation Study of Three Diagnostic Methods for Helicobacter pylori Infection","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79402559","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}
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