In dye-sensitized solar cells, the working electrode is frequently made of the semiconductor TiO2 (DSSC). TiO2 is utilized in two different forms: transparent paste and nano powder. In this study, TiO2 and a transparent sort of paste were used to fabricate DSSCs with success. To fabricate the DSSC, transparent TiO2 paste 18 NR-T was placed in the furnace Carbonite 1100 heating process with three different holding times. 10 minutes, 20 minutes, and 30 minutes at 500 °C were the different holding times employed. Ipomoea aquatica Forsk is the source of natural colouring. Keithley 2620A and UV-Vis Spectrophotometer Lambda 25 were used for the I-V test and the absorbance test, respectively, for DSSC characterization. According to the characterization results, the efficiency was 5.5 x 10-2 per cent. At the same time, the absorbance test found absorption peaks in the wavelength ranges of 400–440 nm and 640–680 nm for each watercolour dye.
{"title":"The impact of holding time variation on the effectiveness of DSSC TiO2 transparent with dye Ipomoea aquatica Forsk","authors":"T. Y. Septiawan","doi":"10.53402/ajmse.v1i1.188","DOIUrl":"https://doi.org/10.53402/ajmse.v1i1.188","url":null,"abstract":"In dye-sensitized solar cells, the working electrode is frequently made of the semiconductor TiO2 (DSSC). TiO2 is utilized in two different forms: transparent paste and nano powder. In this study, TiO2 and a transparent sort of paste were used to fabricate DSSCs with success. To fabricate the DSSC, transparent TiO2 paste 18 NR-T was placed in the furnace Carbonite 1100 heating process with three different holding times. 10 minutes, 20 minutes, and 30 minutes at 500 °C were the different holding times employed. Ipomoea aquatica Forsk is the source of natural colouring. Keithley 2620A and UV-Vis Spectrophotometer Lambda 25 were used for the I-V test and the absorbance test, respectively, for DSSC characterization. According to the characterization results, the efficiency was 5.5 x 10-2 per cent. At the same time, the absorbance test found absorption peaks in the wavelength ranges of 400–440 nm and 640–680 nm for each watercolour dye.","PeriodicalId":147185,"journal":{"name":"Asian Journal of Material Science and Engineering","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133952900","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}
The phenomenon that occurs while a motor is under load disqualifies the applicant. In the interim, it may measure the maximal motor property during production. Consequently, the phenomena of numerous circuits is investigated in order to identify a simulation of electrical state that can anticipate the maximum currency and torque, which is a procedure that must be completed prior to design. We observe that the simulation matches the reference quite well. Multiple circuit circumstances with t=6s, U=12V result in the greatest stall force based on rotation to modify time and voltage. Then, the sequence is t=8s, U=10V; t=10s, U=8V; and t=12s, U=6V. In terms of torque, t=6s, U=12V, t=8s, U=10V, t=6s, U=12V, and t=12s, U=6V are the values. When the voltage falls, the resistance falls, and ultimately the spinning slows.
电机在负载下发生的现象使申请人丧失资格。在此期间，它可以测量生产过程中的最大运动性能。因此，研究了许多电路的现象，以确定可以预测最大货币和扭矩的电气状态的模拟，这是一个必须在设计之前完成的过程。我们观察到，模拟结果与参考文献吻合得很好。t=6s, U=12V的多种电路情况下，基于旋转修改时间和电压的失速力最大。则顺序为t=8s, U=10V;t = 10 s U = 8 v;t=12s, U=6V。转矩的取值为t=6s, U=12V, t=8s, U=10V, t=6s, U=12V, t=12s, U=6V。当电压下降时，电阻下降，最终旋转速度减慢。
{"title":"Parallel circuit resistance in motor: A simulation study","authors":"X. Run, Z. Chen","doi":"10.53402/ajmse.v1i1.73","DOIUrl":"https://doi.org/10.53402/ajmse.v1i1.73","url":null,"abstract":"The phenomenon that occurs while a motor is under load disqualifies the applicant. In the interim, it may measure the maximal motor property during production. Consequently, the phenomena of numerous circuits is investigated in order to identify a simulation of electrical state that can anticipate the maximum currency and torque, which is a procedure that must be completed prior to design. We observe that the simulation matches the reference quite well. Multiple circuit circumstances with t=6s, U=12V result in the greatest stall force based on rotation to modify time and voltage. Then, the sequence is t=8s, U=10V; t=10s, U=8V; and t=12s, U=6V. In terms of torque, t=6s, U=12V, t=8s, U=10V, t=6s, U=12V, and t=12s, U=6V are the values. When the voltage falls, the resistance falls, and ultimately the spinning slows.","PeriodicalId":147185,"journal":{"name":"Asian Journal of Material Science and Engineering","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125501151","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}
This research investigates the features crucial to injection molding via the rheological behavior, injection molding, debinding, and sintering process of water and gas atomised 316L stainless steel powder utilizing a newly developed locally based binder system containing palm stearin. The critical powder loading for injection molding was 65vol% for gas atomisation and 62vol% for water atomisation. Due to the minimal interparticle friction and high packing density, the gas-atomised powder proved easier to shape. In contrast, the water-atomised powder has a high viscosity of the injection molding feedstock, a high interparticle friction, and a low packing density, all of which impede injection molding. The debinding of the binder was accomplished utilizing solvent and thermal methods. After debinding, samples were sintered in a high-temperature vacuum furnace at 1360 degrees Celsius. Results reveal that water-atomised powder can be sintered to 95% of its theoretical density, whereas gas-atomised powder can be sintered to near full density.
{"title":"Evaluation of injection molded gas and water atomized 316l stainless steel powder properties","authors":"M. A. Omar, I. Subuki","doi":"10.53402/ajmse.v1i1.74","DOIUrl":"https://doi.org/10.53402/ajmse.v1i1.74","url":null,"abstract":"This research investigates the features crucial to injection molding via the rheological behavior, injection molding, debinding, and sintering process of water and gas atomised 316L stainless steel powder utilizing a newly developed locally based binder system containing palm stearin. The critical powder loading for injection molding was 65vol% for gas atomisation and 62vol% for water atomisation. Due to the minimal interparticle friction and high packing density, the gas-atomised powder proved easier to shape. In contrast, the water-atomised powder has a high viscosity of the injection molding feedstock, a high interparticle friction, and a low packing density, all of which impede injection molding. The debinding of the binder was accomplished utilizing solvent and thermal methods. After debinding, samples were sintered in a high-temperature vacuum furnace at 1360 degrees Celsius. Results reveal that water-atomised powder can be sintered to 95% of its theoretical density, whereas gas-atomised powder can be sintered to near full density.","PeriodicalId":147185,"journal":{"name":"Asian Journal of Material Science and Engineering","volume":"168 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116615402","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}
Amino acids are compounds that consist of an amine group, a carboxylic acid group, and a variable side chain. These molecules are very significant in biochemistry. Amino acids with uncharged amino groups can also undergo Schiff base production at physiological PH levels, presenting an additional possible pathway for metal complexes. In this investigation, four novel Schiff-base amino acid compounds were identified: 5Chlorosalcialdehyde-glycine (H2L1), 5-Chlorosalycialdehyde-alanine (H2L2), 5-Nitrosalycialdehyde-glycine (H2L3), and 5Nitrosalycialdehyde-alanine (H2L4) (H2L4). Condensation reaction product of substituted salicylaldehyde. With a few amino acids, glycine and -alanine, using an alternate technique. The innovation is the addition of 10-2mole sodium hydroxide as a novel catalyst to the traditional process of synthesizing Schiff bases. Elements (C.H.N) and spectroscopic techniques (IR, 1H, and 13C NMR) were used to describe the four Schiff bases. These techniques were successfully used to characterize the prepared Schiff bases
{"title":"Synthesis, characterisation of schiff bases generated from salicylaldehyde with certain amino acids using a new established technique","authors":"A. Wady, M. B. Hussein, M. M. Mohammed","doi":"10.53402/ajmse.v1i1.75","DOIUrl":"https://doi.org/10.53402/ajmse.v1i1.75","url":null,"abstract":"Amino acids are compounds that consist of an amine group, a carboxylic acid group, and a variable side chain. These molecules are very significant in biochemistry. Amino acids with uncharged amino groups can also undergo Schiff base production at physiological PH levels, presenting an additional possible pathway for metal complexes. In this investigation, four novel Schiff-base amino acid compounds were identified: 5Chlorosalcialdehyde-glycine (H2L1), 5-Chlorosalycialdehyde-alanine (H2L2), 5-Nitrosalycialdehyde-glycine (H2L3), and 5Nitrosalycialdehyde-alanine (H2L4) (H2L4). Condensation reaction product of substituted salicylaldehyde. With a few amino acids, glycine and -alanine, using an alternate technique. The innovation is the addition of 10-2mole sodium hydroxide as a novel catalyst to the traditional process of synthesizing Schiff bases. Elements (C.H.N) and spectroscopic techniques (IR, 1H, and 13C NMR) were used to describe the four Schiff bases. These techniques were successfully used to characterize the prepared Schiff bases","PeriodicalId":147185,"journal":{"name":"Asian Journal of Material Science and Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129540882","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}
Wetlands contribute around 5 percent of the world's carbon dioxide (CO2) emissions via respiration, which is believed to be controlled by soil conditions. The objective of this study is to establish a link between the physicochemical parameters of marsh soil and CO2 respiration at Oguta lake point one. Standard procedures were used to assess the soil parameters, and an AZ 77535 CO2 gas analyzer was held at arm's length to determine the CO2 concentration at the sample location. The mean values for pH (5.03), temperature (28.16 oC), electrical conductivity (108.56 uS/cm), moisture content (17.83 percent), and organic matter were 5.03, 28.16, 108.56, 108.56, and 17.83, respectively (1.35 percent). The mean weekly [CO2] concentrations (564 13.5 to 580.72.2 13.03 ppm) were greater than the global average (370 ppm) and all locations surrounding the lake, including the control site (425 2.5 to 438.2 2.0 ppm). Positive relationships were identified between [CO2] and R2 values of (0.262), (0.370), (0.304), (0.294), and (0.056), respectively. This demonstrates that CO2 respiration is regulated by soil characteristics. A rise in soil characteristics corresponded to an increase in CO2 concentration. These findings contribute to our understanding of how soil characteristics might be adjusted to reduce soil respired CO2 and, consequently, wetland contributions to global warming.
{"title":"Carbon dioxide emissions and wetland soil physicochemical properties in Oguta Lake, Imo State, Nigeria","authors":"A. W. Verla, J. Olumba, E. N. Verla","doi":"10.53402/ajmse.v1i1.76","DOIUrl":"https://doi.org/10.53402/ajmse.v1i1.76","url":null,"abstract":"Wetlands contribute around 5 percent of the world's carbon dioxide (CO2) emissions via respiration, which is believed to be controlled by soil conditions. The objective of this study is to establish a link between the physicochemical parameters of marsh soil and CO2 respiration at Oguta lake point one. Standard procedures were used to assess the soil parameters, and an AZ 77535 CO2 gas analyzer was held at arm's length to determine the CO2 concentration at the sample location. The mean values for pH (5.03), temperature (28.16 oC), electrical conductivity (108.56 uS/cm), moisture content (17.83 percent), and organic matter were 5.03, 28.16, 108.56, 108.56, and 17.83, respectively (1.35 percent). The mean weekly [CO2] concentrations (564 13.5 to 580.72.2 13.03 ppm) were greater than the global average (370 ppm) and all locations surrounding the lake, including the control site (425 2.5 to 438.2 2.0 ppm). Positive relationships were identified between [CO2] and R2 values of (0.262), (0.370), (0.304), (0.294), and (0.056), respectively. This demonstrates that CO2 respiration is regulated by soil characteristics. A rise in soil characteristics corresponded to an increase in CO2 concentration. These findings contribute to our understanding of how soil characteristics might be adjusted to reduce soil respired CO2 and, consequently, wetland contributions to global warming.","PeriodicalId":147185,"journal":{"name":"Asian Journal of Material Science and Engineering","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129149080","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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