Pub Date : 2020-06-01DOI: 10.33899/edusj.2020.165297
N. Younis
The research involved collected (50) sample from serum of Arkela smokers and (50) sample control for period from 15/10/2013 to 15/3/2014 and the age between(15-60)year for men only then determination of some antioxidant (Glutathione, Ceruloplasmin, Vitamin E and C, Malondialdehyde) in serum of Arkela smokers compared with non smokers, the results demonstrated a significant increase in the level of Ceruloplasmin and Malondialdehyde concentration and a significant decrease in the level of Glutathione and Vitamin E and C concentration in smokers compared with control. The results also demonstrated a non-significant change in the level of antioxidant concentration of Arkela smokers with age groups and Body Mass Index BMI. While the results demonstrated a significant decrease in the level of Glutathione and Vitamin E and C and a significant increase in the level of Ceruloplasmin and Malondialdehyde in serum blood smokers (more than two hours) in the day and (more than two years) compared with smokers in (less from hour)in the day and (1-11 months) respectively.
{"title":"Effect of smoking Arkela or Al-shesha on the antioxidant in human body","authors":"N. Younis","doi":"10.33899/edusj.2020.165297","DOIUrl":"https://doi.org/10.33899/edusj.2020.165297","url":null,"abstract":"The research involved collected (50) sample from serum of Arkela smokers and (50) sample control for period from 15/10/2013 to 15/3/2014 and the age between(15-60)year for men only then determination of some antioxidant (Glutathione, Ceruloplasmin, Vitamin E and C, Malondialdehyde) in serum of Arkela smokers compared with non smokers, the results demonstrated a significant increase in the level of Ceruloplasmin and Malondialdehyde concentration and a significant decrease in the level of Glutathione and Vitamin E and C concentration in smokers compared with control. The results also demonstrated a non-significant change in the level of antioxidant concentration of Arkela smokers with age groups and Body Mass Index BMI. While the results demonstrated a significant decrease in the level of Glutathione and Vitamin E and C and a significant increase in the level of Ceruloplasmin and Malondialdehyde in serum blood smokers (more than two hours) in the day and (more than two years) compared with smokers in (less from hour)in the day and (1-11 months) respectively.","PeriodicalId":15610,"journal":{"name":"Journal of Education Science","volume":"51 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85094068","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}
Pub Date : 2020-06-01DOI: 10.33899/edusj.2019.125843.1001
mohamed thamer aghwan, Elham Sadullah Al-talibi
Abstract A simple, sensitive and selective spectrofluorometric method has been developed for the determination of enoxaparin sodium in bulk and dosage forms (injection). The method was based on the quantitative quenching effect of enoxaparin on the native fluorescence of acriflavine due to the formation of nonfluorescent supramolecular ion association complex between the studied drug and acriflavine dye in aqueous solution. The decrease of acriflavine fluorescence was observed at 506 nm after excitation at 402 nm. The relationship between quenching fluorescence intensity and concentration of enoxaparin sodium was linear in the range 0.05-20 μg/ml and with correlation coefficient 0.9990 and with LOD and LOQ 0.011 and 0.035 μg/ml respectively. The average recovery was 100.51% and RSD is less than 3.23%. The stoichiometry of enoxaparin to acriflavine was calculated a 1:4. The method was applied successfully to the determination of enoxaparin as injection formulation and the results were in a good agreement with certified value and standard addition procedure.
{"title":"Indirect Spectrofluorometric Determination of Enoxaparin Sodium in Pharmaceutical Formulation (Injection) by Ion Association Complex Formation with Acriflavine Dye","authors":"mohamed thamer aghwan, Elham Sadullah Al-talibi","doi":"10.33899/edusj.2019.125843.1001","DOIUrl":"https://doi.org/10.33899/edusj.2019.125843.1001","url":null,"abstract":"Abstract A simple, sensitive and selective spectrofluorometric method has been developed for the determination of enoxaparin sodium in bulk and dosage forms (injection). The method was based on the quantitative quenching effect of enoxaparin on the native fluorescence of acriflavine due to the formation of nonfluorescent supramolecular ion association complex between the studied drug and acriflavine dye in aqueous solution. The decrease of acriflavine fluorescence was observed at 506 nm after excitation at 402 nm. The relationship between quenching fluorescence intensity and concentration of enoxaparin sodium was linear in the range 0.05-20 μg/ml and with correlation coefficient 0.9990 and with LOD and LOQ 0.011 and 0.035 μg/ml respectively. The average recovery was 100.51% and RSD is less than 3.23%. The stoichiometry of enoxaparin to acriflavine was calculated a 1:4. The method was applied successfully to the determination of enoxaparin as injection formulation and the results were in a good agreement with certified value and standard addition procedure.","PeriodicalId":15610,"journal":{"name":"Journal of Education Science","volume":"33 1","pages":"45-62"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86299771","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}
Pub Date : 2020-06-01DOI: 10.33899/edusj.2019.125920.1006
Salah Hekmat
A commercial activated carbon was used for the study of adsorption of two diazo dyes from aqueous solution employing batch method. These dyes were synthesized in our laboratory from the reaction of 4amino-antipyrene 4-AAP and β-Naphthol with p-amino phenol and p-amino benzaldehyde via diazonium ions. The effect of pH, temperature, and contact time on dye removal was investigated. The apparent thermodynamic parameters were estimated and the obtained results concluded that, the dyes adsorbed onto activated carbon are driven by entropy effect, exothermic and spontaneous processes. The kinetic study of adsorption of the considered dyes was conducted by applying four models the pseudo-first order, pseudosecond order ,Elovich and intra particules diffusion kinetic models. The results showed that, the second order equation fit better the experimental data. The intra particule diffusion model indicates that, there are more than mechanism controlling the adsorption process.
{"title":"Thermodynamic and Kinetic Study of Adsorption of Azo Dyes Derived for 4-amino Anti pyrene by Activated Carbon","authors":"Salah Hekmat","doi":"10.33899/edusj.2019.125920.1006","DOIUrl":"https://doi.org/10.33899/edusj.2019.125920.1006","url":null,"abstract":"A commercial activated carbon was used for the study of adsorption of two diazo dyes from aqueous solution employing batch method. These dyes were synthesized in our laboratory from the reaction of 4amino-antipyrene 4-AAP and β-Naphthol with p-amino phenol and p-amino benzaldehyde via diazonium ions. The effect of pH, temperature, and contact time on dye removal was investigated. The apparent thermodynamic parameters were estimated and the obtained results concluded that, the dyes adsorbed onto activated carbon are driven by entropy effect, exothermic and spontaneous processes. The kinetic study of adsorption of the considered dyes was conducted by applying four models the pseudo-first order, pseudosecond order ,Elovich and intra particules diffusion kinetic models. The results showed that, the second order equation fit better the experimental data. The intra particule diffusion model indicates that, there are more than mechanism controlling the adsorption process.","PeriodicalId":15610,"journal":{"name":"Journal of Education Science","volume":"32 1","pages":"63-81"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73079849","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}
Pub Date : 2020-06-01DOI: 10.33899/edusj.2020.126418.1034
mohamed saied fisal
{"title":"Effect of Allelopathic Potential of Corn, Sunflower , Field Capacity and Ascorbic Acid In Growth of Two Wheat cultivars","authors":"mohamed saied fisal","doi":"10.33899/edusj.2020.126418.1034","DOIUrl":"https://doi.org/10.33899/edusj.2020.126418.1034","url":null,"abstract":"","PeriodicalId":15610,"journal":{"name":"Journal of Education Science","volume":"55 1","pages":"260-278"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72662326","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}
Pub Date : 2020-06-01DOI: 10.33899/edusj.2020.126676.1049
Vian Badraddin Al-Barzinji
Dialysis is used when the patient's kidneys can no longer perform their functions normally; it is a treatment that performs the functions of natural kidneys. Most patients begin dialysis when their kidneys have lost 85-90% of their ability to work naturally and they have to depend on dialysis for the rest of their lives, is called end –stage renal disease (ESRD). Infection in patients with end stage renal disease (ESRD) is usually treated with hemodialysis (HD) or peritoneal dialysis (PD). End stage renal disease a major cause of morbidity and mortality, in order to assess the fungal growth at hemodialysis and peritoneal dialysis unit a descriptive study was conducted at hemodialysis and peritoneal dialysis units in Hawler teaching hospital, from 15 of January to the end of May 2017;the study also includes the access sites and peritoneal catheter site. Factors that affected the access site among dialysis patient in the hospital. Sample of 63 patients, who were attending to the dialysis unit at time of the data collection, had been taken; in addition to that swab samples had been gathered from access site and peritoneal catheter site. The results of the study revealed that the fungal growth was positive at dialysis access sites, where the total percentage was 84.1% and that of peritoneal catheter site was 15.85%. In these unites, different types of filamentous fungi and yeasts had been successfully isolated.
{"title":"Assessment of Fungal Growth at Hemodialysis and Peritoneal Dialysis Unit in Hawler Teaching Hospital","authors":"Vian Badraddin Al-Barzinji","doi":"10.33899/edusj.2020.126676.1049","DOIUrl":"https://doi.org/10.33899/edusj.2020.126676.1049","url":null,"abstract":"Dialysis is used when the patient's kidneys can no longer perform their functions normally; it is a treatment that performs the functions of natural kidneys. Most patients begin dialysis when their kidneys have lost 85-90% of their ability to work naturally and they have to depend on dialysis for the rest of their lives, is called end –stage renal disease (ESRD). Infection in patients with end stage renal disease (ESRD) is usually treated with hemodialysis (HD) or peritoneal dialysis (PD). End stage renal disease a major cause of morbidity and mortality, in order to assess the fungal growth at hemodialysis and peritoneal dialysis unit a descriptive study was conducted at hemodialysis and peritoneal dialysis units in Hawler teaching hospital, from 15 of January to the end of May 2017;the study also includes the access sites and peritoneal catheter site. Factors that affected the access site among dialysis patient in the hospital. Sample of 63 patients, who were attending to the dialysis unit at time of the data collection, had been taken; in addition to that swab samples had been gathered from access site and peritoneal catheter site. The results of the study revealed that the fungal growth was positive at dialysis access sites, where the total percentage was 84.1% and that of peritoneal catheter site was 15.85%. In these unites, different types of filamentous fungi and yeasts had been successfully isolated.","PeriodicalId":15610,"journal":{"name":"Journal of Education Science","volume":"470 1","pages":"279-286"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78330148","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}
Pub Date : 2020-06-01DOI: 10.33899/edusj.2020.165303
Shaymaa Ahmed Razoqi
The relational database model is the main focus of the database for the previous time. It provides robust data storage and structure that supports transaction characteristics and data retrieval with structured query languageSQL. The emergence of web technologies and clustering technology in large servers called for the need to store unstructured data and move away from the pattern of tables and static fields and not topic to transaction conditions, especially in distributed systems. Instead, it used CAP theory. New data models are emergence including: Document Data model, Key-Value model, Column-Family model, and Graph model, And new programming languages that deal with these models. An asset inventory system is a model of systems that are not topic to a fixed structure. Each location in the organization has fairly different assets and assets in the same location have different specifications that are difficult to organize in the form of tables and columns. For this reason using of NOSQL CouchDB database system was adopted and the use of MAP-REDUCE technology to organize data display and Cloudant Query in Mango-view method to retrieve data from the inventory database.
{"title":"Reasons of the transformed toward NOSQL Databases and its data models","authors":"Shaymaa Ahmed Razoqi","doi":"10.33899/edusj.2020.165303","DOIUrl":"https://doi.org/10.33899/edusj.2020.165303","url":null,"abstract":"The relational database model is the main focus of the database for the previous time. It provides robust data storage and structure that supports transaction characteristics and data retrieval with structured query languageSQL. The emergence of web technologies and clustering technology in large servers called for the need to store unstructured data and move away from the pattern of tables and static fields and not topic to transaction conditions, especially in distributed systems. Instead, it used CAP theory. New data models are emergence including: Document Data model, Key-Value model, Column-Family model, and Graph model, And new programming languages that deal with these models. An asset inventory system is a model of systems that are not topic to a fixed structure. Each location in the organization has fairly different assets and assets in the same location have different specifications that are difficult to organize in the form of tables and columns. For this reason using of NOSQL CouchDB database system was adopted and the use of MAP-REDUCE technology to organize data display and Cloudant Query in Mango-view method to retrieve data from the inventory database.","PeriodicalId":15610,"journal":{"name":"Journal of Education Science","volume":"13 1","pages":"82-100"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85015325","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}
Pub Date : 2020-06-01DOI: 10.33899/edusj.2020.165298
M. Khalil
We studied in this work a class of nonlinear Volterra integral equations with delay and present a sufficient condition for the bounded solution also we give an illustrative example which support the main result of this paper.
{"title":"Some Theorems and Results on Solution of Kind of Volterra Integral Equations","authors":"M. Khalil","doi":"10.33899/edusj.2020.165298","DOIUrl":"https://doi.org/10.33899/edusj.2020.165298","url":null,"abstract":"We studied in this work a class of nonlinear Volterra integral equations with delay and present a sufficient condition for the bounded solution also we give an illustrative example which support the main result of this paper.","PeriodicalId":15610,"journal":{"name":"Journal of Education Science","volume":"9 1","pages":"9-25"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78554682","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}
Pub Date : 2020-06-01DOI: 10.33899/edusj.2019.125908.1004
zainab hassan sulyman, Natiq G. Ahmed
In this paper the compounds (11-20) (methyl pyrimidine 2(1H)-one and others phenyl pyrimidine -2(1H)one) that had been already prepared from α, β unsaturated carbonyl compounds that are called chalcones, these compounds are usually prepared from the reaction of different aldehydes (4-methoxy benzaldehyde, 2-nitro benzaldehyde, 3-nitrobenzaldehyde, 4-N,N—dimethyle amino benzaldehyde, benzaldehyde, 4-nitrobenzaldehyde) with different ketones (acetone, acetophenone, 2-nitro acetophenone, 3nitro acetophenone) After preparing and purifying them a suitable mesurment for physical, chemical and spectroscopic properties had been made to get chalcones that reacted with urea under known chemical conditions to get the pyrimidinone compounds that we need. Pyrimidine compounds had been reacted with two aromatic amines (2,4dinitro aniline and 4amino acetophenone) using glacial acetic acid as catalyst in absolute ethanol giving a new compounds of schiff's bases (21-40). New thiazolidine 4-one (41-50) had been synthesized from the reacting of Schiff's bases (21-30) with thioglycolic acid in absolute ethanol. 1,3oxazepine derivatives. (51-60) had been prepared from reaction between Schiff's bases (31-40) and malic anhydrid in absolut ethanol. The structures of the Synthesized compounds had been estimated by IR, HNMR and some physical data.
本文研究了由α， β不饱和羰基化合物查尔酮合成的化合物(11-20)(甲基嘧啶2(1H)- 1和其他苯基嘧啶-2(1H) - 1)，这些化合物通常是由不同的醛(4-甲氧基苯甲醛，2-硝基苯甲醛，3-硝基苯甲醛，4-N, n -二甲基氨基苯甲醛，苯甲醛，4-硝基苯甲醛)与不同的酮(丙酮，苯乙酮，2-硝基苯乙酮，2-硝基苯乙酮，2-硝基苯乙酮，2-硝基苯乙酮，2-硝基苯乙酮，2-硝基苯乙酮，在制备和纯化后，对查尔酮进行了物理、化学和光谱性质的测定，查尔酮在已知的化学条件下与尿素反应，得到我们需要的嘧啶类化合物。以冰醋酸为催化剂，在无水乙醇中，嘧啶类化合物与两种芳香胺(2,4二硝基苯胺和4氨基苯乙酮)反应，得到新的希夫碱化合物(21-40)。以希夫碱(21-30)与巯基乙酸为原料，在无水乙醇中合成了新的噻唑烷4- 1(41-50)。1、3 oxazepine衍生品。以希夫碱(31-40)和苹果酸酐为原料，在无水乙醇中制备了苹果酸酐(51-60)。通过红外光谱(IR)、核磁共振光谱(HNMR)和一些物理数据对所合成化合物的结构进行了表征。
{"title":"Synthesis of New Oxazepine and Thaizolidine Compounds derived from Pyrimidine-2(2H)-one","authors":"zainab hassan sulyman, Natiq G. Ahmed","doi":"10.33899/edusj.2019.125908.1004","DOIUrl":"https://doi.org/10.33899/edusj.2019.125908.1004","url":null,"abstract":"In this paper the compounds (11-20) (methyl pyrimidine 2(1H)-one and others phenyl pyrimidine -2(1H)one) that had been already prepared from α, β unsaturated carbonyl compounds that are called chalcones, these compounds are usually prepared from the reaction of different aldehydes (4-methoxy benzaldehyde, 2-nitro benzaldehyde, 3-nitrobenzaldehyde, 4-N,N—dimethyle amino benzaldehyde, benzaldehyde, 4-nitrobenzaldehyde) with different ketones (acetone, acetophenone, 2-nitro acetophenone, 3nitro acetophenone) After preparing and purifying them a suitable mesurment for physical, chemical and spectroscopic properties had been made to get chalcones that reacted with urea under known chemical conditions to get the pyrimidinone compounds that we need. Pyrimidine compounds had been reacted with two aromatic amines (2,4dinitro aniline and 4amino acetophenone) using glacial acetic acid as catalyst in absolute ethanol giving a new compounds of schiff's bases (21-40). New thiazolidine 4-one (41-50) had been synthesized from the reacting of Schiff's bases (21-30) with thioglycolic acid in absolute ethanol. 1,3oxazepine derivatives. (51-60) had been prepared from reaction between Schiff's bases (31-40) and malic anhydrid in absolut ethanol. The structures of the Synthesized compounds had been estimated by IR, HNMR and some physical data.","PeriodicalId":15610,"journal":{"name":"Journal of Education Science","volume":"93 1","pages":"186-200"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74291208","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}
Pub Date : 2020-06-01DOI: 10.33899/EDUSJ.2020.165307
Malak Jaafar Ali, S. M. Nuri, S. M. Rajab
The gradient energy coefficient ( ) has a main function in extracting the polymers properties to help us to innovate and manufacture new polymers and different process like coating, wetting, foaming, adhesion operations. The Cahn-Hilliard (CH) theory [1], represents the free energy profile of polymer surfaces or interfaces. Considers the free energy profile of polymer surfaces or interfaces as inhomogeneous which has more than one phase. On the other hand, it has been used the Freed Bawendi contribution in conjunction with Cahn-Hilliard in treatment with architecture structure for polymers [2]. While Simha-Somcynsky (SS) theory describes the thermodynamic properties of both low and high molecular weights in terms of occupied site fraction (y) [3]. This study has been examined in the range of (313 -473) K temperatures and up to about (150) Mpa pressure. The quantitative success of our study is clearly appeared in the minimum and maximum deviations in the volume is 0.036 and 0.128
{"title":"Studying the parameter gradient energy coefficient of Polyethylene glycol as a function of molecular weight with Freed Contribution","authors":"Malak Jaafar Ali, S. M. Nuri, S. M. Rajab","doi":"10.33899/EDUSJ.2020.165307","DOIUrl":"https://doi.org/10.33899/EDUSJ.2020.165307","url":null,"abstract":"The gradient energy coefficient ( ) has a main function in extracting the polymers properties to help us to innovate and manufacture new polymers and different process like coating, wetting, foaming, adhesion operations. The Cahn-Hilliard (CH) theory [1], represents the free energy profile of polymer surfaces or interfaces. Considers the free energy profile of polymer surfaces or interfaces as inhomogeneous which has more than one phase. On the other hand, it has been used the Freed Bawendi contribution in conjunction with Cahn-Hilliard in treatment with architecture structure for polymers [2]. While Simha-Somcynsky (SS) theory describes the thermodynamic properties of both low and high molecular weights in terms of occupied site fraction (y) [3]. This study has been examined in the range of (313 -473) K temperatures and up to about (150) Mpa pressure. The quantitative success of our study is clearly appeared in the minimum and maximum deviations in the volume is 0.036 and 0.128","PeriodicalId":15610,"journal":{"name":"Journal of Education Science","volume":"82 1","pages":"201-215"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78225943","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}
Pub Date : 2020-06-01DOI: 10.33899/edusj.2019.126043.1017
Y. Mohammed
Comparative study of the physical characteristics of n-ZnO/p-Si heterojunction diode has been done as a function of deposition temperature in the range of 300-600 °C. Transparent conducting (TC) Zinc Oxide (ZnO) thin films were deposited by atmospheric pressure chemical vapor deposition (APCVD) technique on the p-Si(100) and glass substrates. Also, the influences of different deposition temperature on the morphology and optical properties of ZnO films were studied. Both the average surface roughness (from 62.8 to 18.8 nm) and the root mean square (from 78.2 to 24 nm) of ZnO films were decreased with the increase in the deposition temperature. Optical transmittance measurement results exhibited good transparency within the visible wavelength range for the films prepared at a temperature above 400 C. The current-voltage (I-V) characteristics of the heterojunction diodes exhibited rectification behavior and depend on the deposition temperature. The electrical parameters of the n-ZnO/p-Si heterojunctions were also affected by the deposition temperature. The diodes prepared at a temperature above 400 C were possessed lower reverse saturation current and high rectification ratio compared to those fabricated at a relatively lower temperature such as 300 C or 400 °C. Such low a temperature grown n-ZnO/p-Si heterojunction diodes with lower reverse saturation current could be suitable for photo-detection applications.
{"title":"Effect of Deposition Temperature on the Physical Performance of n-ZnO/p-Si Heterojunction","authors":"Y. Mohammed","doi":"10.33899/edusj.2019.126043.1017","DOIUrl":"https://doi.org/10.33899/edusj.2019.126043.1017","url":null,"abstract":"Comparative study of the physical characteristics of n-ZnO/p-Si heterojunction diode has been done as a function of deposition temperature in the range of 300-600 °C. Transparent conducting (TC) Zinc Oxide (ZnO) thin films were deposited by atmospheric pressure chemical vapor deposition (APCVD) technique on the p-Si(100) and glass substrates. Also, the influences of different deposition temperature on the morphology and optical properties of ZnO films were studied. Both the average surface roughness (from 62.8 to 18.8 nm) and the root mean square (from 78.2 to 24 nm) of ZnO films were decreased with the increase in the deposition temperature. Optical transmittance measurement results exhibited good transparency within the visible wavelength range for the films prepared at a temperature above 400 C. The current-voltage (I-V) characteristics of the heterojunction diodes exhibited rectification behavior and depend on the deposition temperature. The electrical parameters of the n-ZnO/p-Si heterojunctions were also affected by the deposition temperature. The diodes prepared at a temperature above 400 C were possessed lower reverse saturation current and high rectification ratio compared to those fabricated at a relatively lower temperature such as 300 C or 400 °C. Such low a temperature grown n-ZnO/p-Si heterojunction diodes with lower reverse saturation current could be suitable for photo-detection applications.","PeriodicalId":15610,"journal":{"name":"Journal of Education Science","volume":"57 1","pages":"118-132"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76997337","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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