International Journal of Science and Engineering最新文献

Study on the application of cuprous thiocyanate in lead perovskite solar cells as a hole transport layer 硫氰酸亚铜作为空穴传输层在铅钙钛矿太阳能电池中的应用研究

International Journal of Science and Engineering Pub Date : 2020-04-01 DOI: 10.3966/222344892020041001007

Yangyang Lu, Tzung‐Fang Guo, Shih-Wei Tseng

{"title":"Study on the application of cuprous thiocyanate in lead perovskite solar cells as a hole transport layer","authors":"Yangyang Lu, Tzung‐Fang Guo, Shih-Wei Tseng","doi":"10.3966/222344892020041001007","DOIUrl":"https://doi.org/10.3966/222344892020041001007","url":null,"abstract":"In recent years, in order to solve the increasingly serious energy and environmental problems, people have turned their attention to the development and utilization of new energy. Among various new energy technologies, photovoltaic solar cells are undoubtedly one of the most promising directions. Among many new types of solar cells, perovskite thin-film solar cells have attracted a lot of attention from many solar energy researchers because of their high photoelectric conversion efficiency. In perovskite solar cells, in addition to the active layer material affecting the photoelectric conversion efficiency of the device, the interface layers(hole transport layer and electron transport layer) between the active layer and the electrode are also key factors. Therefore, in the current material structure of perovskite cells, the interface layer material has become an important research field. In this study, the inorganic copper thiocyanate (CuSCN) film was prepared by gas-assisted spin coating method, which was used as the hole transport layer(HTL) of perovskite solar cell to replace the traditional polymer material PEDOT:PSS. The thickness, crystallization characteristics, interface structure, annealing temperature and photoelectric conversion efficiency of the perovskite solar cell will be carefully investigated in this study. The experimental results show that cuprous thiocyanate can effectively replace PEDOT: PSS as a hole transport layer in perovskite solar cells. The cell with the best photoelectric conversion efficiency has a J_(sc) of 21.4 mA/cm^2, a V_(oc) of 1.0 mV, and a photoelectric conversion efficiency of 15.1%.","PeriodicalId":14209,"journal":{"name":"International Journal of Science and Engineering","volume":"10 1","pages":"193-200"},"PeriodicalIF":0.0,"publicationDate":"2020-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41688844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Evaluation of Milk Nutrient Content Filtrated by Polyethersulfone Ultrafiltration Membrane with Different Polymer Concentration and Time Filtration 不同聚合物浓度和时间过滤的聚醚砜超滤膜过滤乳营养成分的评价

International Journal of Science and Engineering Pub Date : 2017-03-07 DOI: 10.12777/IJSE.12.2.%P

Fauziyya Yusrika Rachma, T. Kusworo, D. W. Harjanti

{"title":"The Evaluation of Milk Nutrient Content Filtrated by Polyethersulfone Ultrafiltration Membrane with Different Polymer Concentration and Time Filtration","authors":"Fauziyya Yusrika Rachma, T. Kusworo, D. W. Harjanti","doi":"10.12777/IJSE.12.2.%P","DOIUrl":"https://doi.org/10.12777/IJSE.12.2.%P","url":null,"abstract":"The aim of this study was to determine the effect of polyethersulfone (PES) polymer concentration and filtration time toward the membrane performance (flux) and milk nutrient content (water content, fat and protein). Ultrafiltration membrane was made using PES polymer and polyethylene glycol (PEG) as additive. This research used Split Plot in Time design with five repetitions. The main plot was filtration time and the subplot was level of polymer concentration. The data was analyzed using analysis of variance (ANOVA) and continued by Duncan Test in 5% level if there was a significant effect. The result showed that there was no interaction effect (P>0,05) between polymer concentration and time filtration to membrane flux and milk nutrient content. The difference of polymer concentration affect membrane flux and the milk water content (P 0,05) toward fat and protein content. Water content in milk filtrated by M1 and M3 membrane increased significantly, whereas water content in milk filtrated by M2 membrane decreased significantly. Fat content in milk filtrated by M1, M2 and M3 membrane were decreased. Milk protein content filtrated by M1 and M2 membrane tend to increase, while milk protein content filtrated by M3 membrane tend to decrease. It could be concluded that M2 membrane that containing of 15% PES and 5% PEG was the best membrane for milk filtration with 5 hours time of filtration.","PeriodicalId":14209,"journal":{"name":"International Journal of Science and Engineering","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42392702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

利用MANFIS-PSO 可變慣性飛輪控制之風場調查：以東吉島為例利用MANFIS-PSO 可变惯性飞轮控制之风场调查：以东吉岛为例

International Journal of Science and Engineering Pub Date : 2016-10-01 DOI: 10.6159/IJSE.2016.(6-2).02

蔡志緯, 黃崇能

引用次数: 0

PHYSICOCHEMICAL PROPERTIES OF BABY INSTANT PORRIDGE FORTIFIED WITH IRON 加铁婴儿速溶粥的理化性质

International Journal of Science and Engineering Pub Date : 2016-04-17 DOI: 10.12777/IJSE.10.2.%P

H. Santosa, K. Haryani, N. Handayani

{"title":"PHYSICOCHEMICAL PROPERTIES OF BABY INSTANT PORRIDGE FORTIFIED WITH IRON","authors":"H. Santosa, K. Haryani, N. Handayani","doi":"10.12777/IJSE.10.2.%P","DOIUrl":"https://doi.org/10.12777/IJSE.10.2.%P","url":null,"abstract":"F ortification is one of solution to alleviate the deficiency of iron. Prevalence of iron deficiency anemia mostly on children under five years, i.e baby instant porridges. Purple sweet potatoes have a potential to be baby instant porridge. The aims of this research was to investigate the effect of fortificant’s type on Fe level as nutritional value, physicochemical properties (bulk density, rehydration capacity, and color) of baby instant porridges made from purple sweet potatoes. This study consists of several stages, which are the stage of making flour, fortification stage, the stage of making instant porridge and phase analysis results. The results show that i ron-fortified added to instant baby porridge for nutritional characterization is below to the concentration of additional fortificant. The higher Fe identified on the addition of the iron concentration of 90 ppm (76.12 ppm) and lowest for the addition of concentration of 70 ppm (32.14 ppm). The results of physical properties for bulk density of instant porridge are (0.804 to 0.874 g / ml) showed there is no significant difference between variables and iron fortification no significant effect. Rehydration capacity (1.4 to 1.8 ml/g) with the addition of the iron various variable does not provide significant value changes and provide a lower value than the baby porridge with no fortifi ca n t (2 ml / g).","PeriodicalId":14209,"journal":{"name":"International Journal of Science and Engineering","volume":"10 1","pages":"78-82"},"PeriodicalIF":0.0,"publicationDate":"2016-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66720747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Techno-Economy Analysis A Small Scale Reverse Osmosis System for Brackish Water Desalination 微咸水小型反渗透淡化系统的技术经济分析

International Journal of Science and Engineering Pub Date : 2016-04-15 DOI: 10.12777/IJSE.10.2.51-59

I. N. Widiasa, Linda Aliffia Yoshi

引用次数: 8

The Role of Calcium and Glucose on the Increasing of Parasitemia Value and Hemolysis into Plasmodium falciparum-infected Erythrocyte 钙和葡萄糖在疟原虫感染红细胞寄生值升高和溶血中的作用

International Journal of Science and Engineering Pub Date : 2016-04-15 DOI: 10.12777/IJSE.10.2.63-66

V. Asfirizal

{"title":"The Role of Calcium and Glucose on the Increasing of Parasitemia Value and Hemolysis into Plasmodium falciparum-infected Erythrocyte","authors":"V. Asfirizal","doi":"10.12777/IJSE.10.2.63-66","DOIUrl":"https://doi.org/10.12777/IJSE.10.2.63-66","url":null,"abstract":"Erythrocyte infected by Plasmodium experiences various changes of shape and function. The permeability increases upon various dissolved material including amino acid, glucose, vitamin, nucleotide, purine, anion/cation and organic/inorganic and also others simple dissolved materials such as sorbitol, choline and chloride-ion. The increasing of permeability is very needed by Plasmodium to provide nutrients for internal growth. The objectives of this research were to determine the increasing of parasitemia value and hemolysis on erythrocyte infected by Plasmodium falciparum. The medium culture used for growing Plasmodium falciparum was RPMI 1640 that produced parasitemia 15%, inoculation was conducted to produce sub-culture that produced parasitemia 20% and divided into calcium, glucose and control (CM 10%) treatment with 3 times replications. Observation was conducted from the first day to sixth day after treatment. Parasitemia and hemolysis parameters as growth indicators were observed. Difference among treatments groups were analyzed using ANOVA and followed by Duncan Multiple Range Test (DMRT α=0.05). The result showed that the application of calcium + glucose produced the highest number of parasitemia (11.87±4.71) (means ±SD) and hemolysis (0.278 + 0.012) compared with others applications i.e. calcium, glucose and control medium culture (10% CM). This application produced significant difference (p<0.05). It was concluded that calcium and glucose had important to increase parasitemia and hemolysis of Plasmodium falciparum -infected erythrocyte","PeriodicalId":14209,"journal":{"name":"International Journal of Science and Engineering","volume":"10 1","pages":"63-66"},"PeriodicalIF":0.0,"publicationDate":"2016-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66721161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Feed Intake and Daily Weight Gain of Locally Sheep Fed with Amofer Palm Oil Plantation and Mill’s Byproduct-based Complete Feed 阿莫弗棕榈油种植园和磨坊副产品全饲料饲喂地方绵羊的采食量和日增重

International Journal of Science and Engineering Pub Date : 2016-04-15 DOI: 10.12777/IJSE.10.2.67-73

H. Mayulu, S. Suhardi

{"title":"The Feed Intake and Daily Weight Gain of Locally Sheep Fed with Amofer Palm Oil Plantation and Mill’s Byproduct-based Complete Feed","authors":"H. Mayulu, S. Suhardi","doi":"10.12777/IJSE.10.2.67-73","DOIUrl":"https://doi.org/10.12777/IJSE.10.2.67-73","url":null,"abstract":"Livestock development through innovation of complete feed (CF) technology which cheap and potential could be optimized through utilizing palm oil plantation and mill’s by-product. The objective of this research was to analyze the effect of complete feed formulated with palm oil plantation and mill’s by-product to the feed intake and daily weight gain of sheep. Male thin tailed sheep 9 months old with average live weight of 14.69 kg were used in this research. CF was formulated from ammoniated-fermented of palm frond, palm leave, empty fruit bunch, and palm pressed fiber which mixed with Centrosema sp., palm kernel cake, corn, rice bran, dried cassava waste pulp, molasses, mineral mix and salt. The study used completely randomized design which consisted of T 1 =10%, T 2 =12%, T 3 =14% and T 4 =16% of crude protein and total digestible nutrient (TDN) 64% with 4 repetitions. Data was analyzed using ANOVA at 95% significance level which followed by Duncan Multiple Range Test. The experiment showed that the level of protein content influenced the feed intake. The highest average of dry matter intake, organic matter intake, crude protein intake and TDN were 865.83 g/sheep/day, 750.60 g/sheep/day, 118.66 g/sheep/day and 555.96 g/sheep/day, respectively. The highest average daily weight gain was 174.18 g/sheep/day which produced at crude protein level of 14% (T 3 ). The statistical analysis showed that T 3 was significantly different to T 1 , T 2 and T 4 . It can be concluded that complete feed formulated from palm oil plantation and mill’s by-product with appropriate level of crude protein content could increase the feed intake and daily weight gain of local sheep","PeriodicalId":14209,"journal":{"name":"International Journal of Science and Engineering","volume":"10 1","pages":"67-73"},"PeriodicalIF":0.0,"publicationDate":"2016-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66721221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Ergonomics in Work Method to Improve Construction Labor Productivity 工法中的人机工程学提高建筑劳动生产率

International Journal of Science and Engineering Pub Date : 2016-01-15 DOI: 10.12777/IJSE.10.1.30-34

Tuti Sumarningsih, M. A. Wibowo, S. Wardani

引用次数: 3

Apoptosis of Colorectal Cancer Cell on Sprague-Dawley Rats Induced with 1,2 Dimethylhidrazine and Phyllanthus niruri Linn Extrac 1,2二甲基肼和余甘子提取物诱导sd - dawley大鼠结直肠癌细胞凋亡的研究

International Journal of Science and Engineering Pub Date : 2016-01-15 DOI: 10.12777/IJSE.10.1.45-50

Endang Sawitri

{"title":"Apoptosis of Colorectal Cancer Cell on Sprague-Dawley Rats Induced with 1,2 Dimethylhidrazine and Phyllanthus niruri Linn Extrac","authors":"Endang Sawitri","doi":"10.12777/IJSE.10.1.45-50","DOIUrl":"https://doi.org/10.12777/IJSE.10.1.45-50","url":null,"abstract":"Apoptosis cell is one of the main biomolecular predictors to determine kind of treatment given to patient with colorectal cancer and to predict the end result. Phyllanthus niruri Linn (P. niruri L) acts as antineoplastic but its potency on the process of cancer cell apoptosis has not been revealed yet. The objective of the research was to evaluate the apoptosis index of rats with colorectal cancer treated with and without P. niruri L. extract. This research used The Randomized Posttest-Only Control Group Design. As many as 30 male Sprague-Dawley rats were induced with 1,2 DMH 30 mg/kgBW once in every week. Four rats were sacrificed at week 9 th , 11 th and 13 th to be observed the development of colorectal cancer. Induction was then stopped and other 18 rats were randomly located into two groups. The first group was positive control (K+) group consisted of 9 rats without P. niruri extract. The second group (X) was consisted of 9 rats with the application of P.niruri L. extract 13.5 mg/kg per day orally. All rats were terminated on week 19 th , tumor lesion was proceed for Histopathology preparations and stained with Kit TUNEL-IHC (Apo-BrdU-IHC TM BioVision Cat #K403) to identify the apoptosis cell. Data were analyzed using unpaired t-test with significant level of p<0.05. The result showed that the average of apoptosis index of X treatment was 2.37 + 0.48 higher than K+ treatment namely 1.45 + 0.41 with a highly significance difference (p=0.000). Phyllanthus niruri L extract increased the apoptosis of colorectal cancer of Sprague-Dawley rats induced with 1,2 Dimethylhidrazine","PeriodicalId":14209,"journal":{"name":"International Journal of Science and Engineering","volume":"10 1","pages":"45-50"},"PeriodicalIF":0.0,"publicationDate":"2016-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66720672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Bit Plane Coding based Steganography Technique for JPEG2000 Images and Videos 基于位平面编码的JPEG2000图像和视频隐写技术

International Journal of Science and Engineering Pub Date : 2016-01-15 DOI: 10.12777/IJSE.10.1

Geeta Kasana, Kulbir Singh, S. S. Bhatia

{"title":"Bit Plane Coding based Steganography Technique for JPEG2000 Images and Videos","authors":"Geeta Kasana, Kulbir Singh, S. S. Bhatia","doi":"10.12777/IJSE.10.1","DOIUrl":"https://doi.org/10.12777/IJSE.10.1","url":null,"abstract":"In this paper, a Bit Plane Coding ( BPC ) based steganography technique for JPEG 2000 images and Motion JPEG 2000 video is proposed. Embedding in this technique is performed in the lowest significant bit planes of the wavelet coefficients of a cover image. In JPEG 2000 standard, the number of bit planes of wavelet coefficients to be used in encoding is dependent on the compression rate and are used in Tier -2 process of JPEG 2000. In the proposed technique, Tier -1 and Tier -2 processes of JPEG 2000 and Motion JPEG 2000 are executed twice on the encoder side to collect the information about the lowest bit planes of all code blocks of a cover image, which is utilized in embedding and transmitted to the decoder. After embedding secret data, Optimal Pixel Adjustment Process ( OPAP ) is applied on stego images to enhance its visual quality. Experimental results show that proposed technique provides large embedding capacity and better visual quality of stego images than existing steganography techniques for JPEG 2000 compressed images and videos. Extracted secret image is similar to the original secret image.","PeriodicalId":14209,"journal":{"name":"International Journal of Science and Engineering","volume":"10 1","pages":"21-29"},"PeriodicalIF":0.0,"publicationDate":"2016-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.12777/IJSE.10.1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66720600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3