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Enhancement of the Quality of Onion Drying Using Tray Dryer 利用托盘干燥机提高洋葱干燥质量
CHEESA Pub Date : 2022-12-07 DOI: 10.25273/cheesa.v5i2.13968.74-81
Siska Nuri Fadilah, Achri Isnan Khamil, M. Muharja, Rizki Fitria Darmayanti, V. Aswie
{"title":"Enhancement of the Quality of Onion Drying Using Tray Dryer","authors":"Siska Nuri Fadilah, Achri Isnan Khamil, M. Muharja, Rizki Fitria Darmayanti, V. Aswie","doi":"10.25273/cheesa.v5i2.13968.74-81","DOIUrl":"https://doi.org/10.25273/cheesa.v5i2.13968.74-81","url":null,"abstract":"Previous reports showed that there has been a continuous increase in the annual production of onion in Indonesia, and it is inversely proportional to the market price. The price drop is often caused by the high water content, which makes it easy to rot. Preservation of onions through a tray dryer is a good preservation method because it is effective and does not require much energy. Therefore, this study aims to determine the effect of variations in time, material thickness, and air velocity on the drying rate of onions. The samples were sliced to a size of 2 - 5 mm, followed by drying for 60 min using a tray dryer with different air rates between 4 - 7 m/s, and the rate of the process was observed every 15 min. The results showed that the drying time reduced the humidity in the chamber. The highest rate of 0.525 g/min was obtained at the peak air rate of 7 m/s. ANOVA results revealed that variations in time, onion thickness, and flow rate have a significant effect on increasing the drying rate of onions. This indicates that the method can be an effective and efficient solution to optimize the drying of the commodity.","PeriodicalId":33035,"journal":{"name":"CHEESA","volume":"132 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86601630","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: 4
Determination of Content and Oil Losses in Meal through Palm Kernel Pressing Process at PT XYZ Belawan XYZ Belawan厂棕榈仁压榨法测定粗粕含量及油损
CHEESA Pub Date : 2022-10-06 DOI: 10.25273/cheesa.v5i2.9255.65-73
Dimas Frananta Simatupang, Maulidna Ginting, Utami Nanda Agrifa, Anna Angela Sitinjak, Merta Simbolon
{"title":"Determination of Content and Oil Losses in Meal through Palm Kernel Pressing Process at PT XYZ Belawan","authors":"Dimas Frananta Simatupang, Maulidna Ginting, Utami Nanda Agrifa, Anna Angela Sitinjak, Merta Simbolon","doi":"10.25273/cheesa.v5i2.9255.65-73","DOIUrl":"https://doi.org/10.25273/cheesa.v5i2.9255.65-73","url":null,"abstract":"PT XYZ Belawan has a kernel crushing plant unit that produces Crude Palm Kernel Oil (CPKO) with 700 tons/day capacity. Palm kernel processing is carried out in two pressing stages. The first stage or first press produces oil and cake, while the second stage or second press produces oil and meal. The meal still contains 7-8% of the oil content. This study is aimed to determine the amount of CPKO yield, oil content, and oil losses in a meal during the pressing palm kernel process. The method used was the calculation of the mass balance in each process flow. The mass balance calculation is carried out after collecting the secondary data from the factory, including the analysis of water content, solids, FFA, and oil content. Based on the calculation results, CPKO yield was 48.10% of the average kernel mass rate of 714.7155 tons and met the plant standard of at least 44%. Furthermore, the average yield of oil content from the meal was 7.45% and oil losses were 3.86%.","PeriodicalId":33035,"journal":{"name":"CHEESA","volume":"53 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75481180","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
Ultrasonic-Assisted Flavonoid Extraction from Ant Nest 超声辅助提取蚁巢黄酮
CHEESA Pub Date : 2022-09-28 DOI: 10.25273/cheesa.v5i2.12231.59-64
N. Indriyani, Yusnita La Goa, Muthmainnah Ely, E. Mendy
{"title":"Ultrasonic-Assisted Flavonoid Extraction from Ant Nest","authors":"N. Indriyani, Yusnita La Goa, Muthmainnah Ely, E. Mendy","doi":"10.25273/cheesa.v5i2.12231.59-64","DOIUrl":"https://doi.org/10.25273/cheesa.v5i2.12231.59-64","url":null,"abstract":"The extraction of active substances from ant nests can be affected by various extraction methods, whether conventional or sonication. Sample extraction was carried out by maceration and ultrasonic methods with the use of solvents to yield flavonoid compounds. The solvents used were aquadest, 70% ethanol and n-hexane, with a material-to-solvent ratio of 1:50 (w/v). The highest flavonoid content of 14% was obtained by ultrasonic-assisted extraction method,  with aquadest as the solvent and at operating conditions of 24 minutes at a temperature of 40oC. Due to their high aquadest solubility and the presence of one or more sulphate ions that are bound to the hydroxyl phenol or sugar, the flavonoids produced are classified as flavonoid sulphate.","PeriodicalId":33035,"journal":{"name":"CHEESA","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81575761","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 Effectiveness of Green Scallop Shell Chitosan as Coagulant in Treatment of Tofu Industrial Liquid Waste 青扇贝壳壳聚糖作为混凝剂处理豆腐工业废液的效果
CHEESA Pub Date : 2022-09-16 DOI: 10.25273/cheesa.v5i2.13019.49-58
Nurlaili Fauziah, M. Ain, R. Dewati
{"title":"The Effectiveness of Green Scallop Shell Chitosan as Coagulant in Treatment of Tofu Industrial Liquid Waste","authors":"Nurlaili Fauziah, M. Ain, R. Dewati","doi":"10.25273/cheesa.v5i2.13019.49-58","DOIUrl":"https://doi.org/10.25273/cheesa.v5i2.13019.49-58","url":null,"abstract":"Tofu waste is gotten after processing soybean, and this waste contains a lot of polluting substances, hence it can pollute rivers and cause health problems. Meanwhile, one method used for treating wastewater into clean water is called the jartest method and its processes include coagulation-flocculation and deposition. This study aims to determine the effectiveness of green mussel shells as coagulants in the treatment of tofu industrial liquid waste. The variables used were 100 mesh green mussel shell powder, 1000 mL of liquid tofu dregs, 150 rpm fast stirring speed for 2 minutes, and 60 rpm slow stirring speed for 15 minutes. Furthermore, chitosan was used with different weight variations in grams (0.5, 0.7, 0.9, 1.1, and 1.3) as well as precipitation time with variations in minutes (20, 30, 40, 50, and 60). The content of Chitosan water was 1.29% and its degree of deacetylation was 65.04%. The result of the preliminary analysis of tofu liquid waste with a coagulant showed BOD, COD, and TSS levels of 965.25mg/L, 435mg/L, and 395mg/L with pH 4 respectively. However, these levels were changed to 195.56mg / L; 299mg/L; and 195.32 mg/L with pH 6 after the final analysis of the liquid waste was conducted.","PeriodicalId":33035,"journal":{"name":"CHEESA","volume":"81 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79194287","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
Pemanfaatan Lignin Serai Wangi Sebagai Lignin Resorsinol Formaldehida (LRF) Menggunakan Ultrasonic Microwave-Assisted Extraction (UMAE)
CHEESA Pub Date : 2022-06-19 DOI: 10.25273/cheesa.v5i1.10348.40-48
Adityas Agung Ramandani, Shintawati Shintawati, Salomo Pranata Aji, Sunarsi Sunarsi
{"title":"Pemanfaatan Lignin Serai Wangi Sebagai Lignin Resorsinol Formaldehida (LRF) Menggunakan Ultrasonic Microwave-Assisted Extraction (UMAE)","authors":"Adityas Agung Ramandani, Shintawati Shintawati, Salomo Pranata Aji, Sunarsi Sunarsi","doi":"10.25273/cheesa.v5i1.10348.40-48","DOIUrl":"https://doi.org/10.25273/cheesa.v5i1.10348.40-48","url":null,"abstract":"Limbah padat serai wangi mengandung lignin cukup tinggi yang dapat berpotensi untuk dikembangkan menjadi berbagai produk komersial, salah satunya adalah perekat. Tujuan dari penelitian ini adalah untuk mendapatkan kondisi optimum dalam pembuatan lignin resorsinol formaldehida (LRF) dari limbah serai wangi menggunakan metode Ultrasonic Microwave-Assisted Extraction (UMAE). Rancangan percobaan menggunakan response surface methodology (RSM) khususnya Box-Behnken Design (BBD). Variabel bebas dalam riset ini adalah volume NaOH (10, 13 dan 16 mL), waktu reaksi (10, 20 dan 30 menit), dan komposisi perekat (4, 6 dan 8 gram). Hasil penelitian menunjukkan perekat lignin LRF yang dihasilkan memenuhi SNI 06-4567-1998 untuk parameter berat jenis, waktu gelatinisasi, dan sisa penguapan. Daya tahan rekat (delaminasi) LRF yang dihasilkan memenuhi standar JAS 1996 yaitu rata rata 0%.  Kondisi optimum pembuatan LRF dicapai pada penambahan NaOH 15,0561 mL, waktu reaksi 20 menit dan massa lignin 4 gram dengan daya tahan rekat (delaminasi) tertinggi yang dihasilkan 1 %.","PeriodicalId":33035,"journal":{"name":"CHEESA","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83061217","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
Risk Analysis Related to the Possibility of Using CNG in Trans Jogja Buses 曹子公交使用CNG可能性的风险分析
CHEESA Pub Date : 2022-06-04 DOI: 10.25273/cheesa.v5i1.10824.28-39
Perwitasari Perwitasari, Heni Anggorowati, Yusmardhany Yusuf
{"title":"Risk Analysis Related to the Possibility of Using CNG in Trans Jogja Buses","authors":"Perwitasari Perwitasari, Heni Anggorowati, Yusmardhany Yusuf","doi":"10.25273/cheesa.v5i1.10824.28-39","DOIUrl":"https://doi.org/10.25273/cheesa.v5i1.10824.28-39","url":null,"abstract":"One of the issues in urban areas such as DI Yogyakarta province is air pollution. The pollution level is high, as shown by the quality index value of about 85.25 in 2019. Vehicle emissions are the most significant source of this pollution in urban areas and can be decreased by using fuel with minimum carbon emission. Compressed Natural Gas (CNG) is an environmentally friendly fuel. However, a safety study is required because CNG is stored under high pressure. Therefore, this research aims to analyze the risk of using CNG in the Trans Jogja bus. The research method collects secondary data and then processes them using FTA, ETA, ALOHA software, and a risk matrix. The result shows that the risk value for CNG usage in the Trans Jogja bus is low to a moderate level or acceptable.","PeriodicalId":33035,"journal":{"name":"CHEESA","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89531361","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
Penentuan pH dan Suhu Optimum Isomerisasi Pembuatan Sirup Fruktosa dari Hidrolisat Onggok Menggunakan Katalis Mg/Al 农果糖果糖中果糖果糖的pH测定和最佳脱氧核糖核酸水合物的生成
CHEESA Pub Date : 2022-03-01 DOI: 10.25273/cheesa.v5i1.10243.1-12
Keryanti Keryanti, A. Permanasari, Resti Nurul Hidayah, R. Hasanah
{"title":"Penentuan pH dan Suhu Optimum Isomerisasi Pembuatan Sirup Fruktosa dari Hidrolisat Onggok Menggunakan Katalis Mg/Al","authors":"Keryanti Keryanti, A. Permanasari, Resti Nurul Hidayah, R. Hasanah","doi":"10.25273/cheesa.v5i1.10243.1-12","DOIUrl":"https://doi.org/10.25273/cheesa.v5i1.10243.1-12","url":null,"abstract":"Onggok merupakan limbah padat yang dihasilkan dari industri tepung tapioka yang masih mengandung karbohidrat dalam bentuk pati sebesar 70,37%, amilosa 17,22% dan amilopektin 53,15%. Onggok berpotensi untuk diolah menjadi sirup fruktosa melalui proses hidrolisis pati yang dilanjutkan dengan isomerisasi gula hidrolisat. Penelitian ini bertujuan untuk menentukan pH dan suhu optimum isomerisasi pembuatan sirup fruktosa dari hidrolisat onggok melalui eksperimen dan analisis Response Surface Methodology (RSM). Proses hidrolisis untuk memecah pati menjadi glukosa dilakukan secara enzimatis, sedangkan isomerisasi untuk mengubah glukosa menjadi fruktosa dilakukan menggunakan katalis hidrotalsit Mg/Al yang disintesis sendiri. Variasi pH dan suhu isomerisasi ditentukan menggunakan desain eksperimen RSM. Dari percobaan didapatkan bahwa kondisi optimum isomerisasi yaitu pada pH 7 dan suhu 120 oC dengan yield sebesar 36,19% dan selektivitas sebesar 25,88%. Selanjutnya, melalui contour plot dan surface plot dari analisis RSM dapat diprediksi bahwa yield dan selektivitas fruktosa dapat mencapai masing-masing sebesar 17,87% dan 35,07% pada pH 6,58 dan suhu 126,2 ⁰C.","PeriodicalId":33035,"journal":{"name":"CHEESA","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84481878","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
Perbandingan Karbon Aktif-Tempurung Nipah dan Karbon Aktif-Kulit Pisang Kepok Teraktivasi Kalium Hidroksida
CHEESA Pub Date : 2022-02-28 DOI: 10.25273/cheesa.v5i1.10992.20-27
Ilma Fadlilah, Nurlinda Ayu Triwuri, Ayu Pramita
{"title":"Perbandingan Karbon Aktif-Tempurung Nipah dan Karbon Aktif-Kulit Pisang Kepok Teraktivasi Kalium Hidroksida","authors":"Ilma Fadlilah, Nurlinda Ayu Triwuri, Ayu Pramita","doi":"10.25273/cheesa.v5i1.10992.20-27","DOIUrl":"https://doi.org/10.25273/cheesa.v5i1.10992.20-27","url":null,"abstract":"Penggunaan karbon aktif (activated carbon/AC) semakin luas seperti untuk reaksi kimia, adsorpsi limbah cair dan gas, serta sebagai katalis dalam proses katalitik. AC-tempurung nipah dan AC-kulit pisang kepok telah disintesis dengan aktivator kalium hidroksida (KOH) 0,5 M. Karbonisasi dilakukan dengan furnace pada suhu 300 °C selama 2 jam. Karakterisasi AC dilakukan dengan analisis kadar air, analisis kadar abu, analisis daya serap I2, dan analisis gugus fungsi sebelum proses aktivasi dan setelah proses aktivasi menggunakan FTIR. Nilai kadar air, kadar abu, daya serap terhadap I2berturut-turut adalah 1% ; 9,9%; 1307 mg/g (AC-tempurung nipah) dan 3% ; 7,4% ; 1777 mg/g (AC-kulit pisang kepok), memenuhi kriteria karbon aktif yang telah ditetapkan SNI. Hasil spektra FTIR AC-tempurung nipah dan AC-kulit pisang kepok menunjukkan adanya pergeseran bilangan gelombang serapan gugus –OH setelah aktivasi. Serapan gugus C=C aromatik mengindikasikan telah terbentuknya grafit.","PeriodicalId":33035,"journal":{"name":"CHEESA","volume":"68 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82162687","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
Modifikasi Zeolit Alam Teraktivasi Asam dengan Perak Nitrat 天然Zeolit改用硝酸银激活
CHEESA Pub Date : 2022-02-12 DOI: 10.25273/cheesa.v5i1.10104.13-19
Catur Septommy, Lailatul Badriyah
{"title":"Modifikasi Zeolit Alam Teraktivasi Asam dengan Perak Nitrat","authors":"Catur Septommy, Lailatul Badriyah","doi":"10.25273/cheesa.v5i1.10104.13-19","DOIUrl":"https://doi.org/10.25273/cheesa.v5i1.10104.13-19","url":null,"abstract":"Zeolit merupakan material aluminosilikat yang memiliki rongga dengan struktur kerangka yang teratur. Aktivasi secara kimia atau fisika dapat meningkatkan kemampuan dalam penukaran ion pada saluran-saluran material zeolit. Penelitian ini bertujuan untuk mengetahui morfologi dan kandungan unsur dari zeolit yang telah dimodifikasi dengan perak nitrat. Aktivasi zeolit alam dilakukan secara kimia menggunakan larutan HCl dan NaCl, sedangkan untuk modifikasinya menggunakan metode sistem batch dengan larutan perak nitrat. Morfologi dan kandungan unsur zeolit yang telah teraktivasi dan termodifikasi diuji dengan SEM-EDS. Hasil penelitian menunjukkan bahwa komposisi mineral pada zeolit setelah aktivasi terjadi kenaikan yang signifikan pada Na dan Si. Hal ini juga dikuti dengan pengotor pada area permukaan zeolit menjadi berkurang. Jumlah persentase unsur perak yang terendah ditemukan pada kelompok zeolit dengan modifikasi AgNO3 0,025 M dan jumlah persentase unsur perak yang tertinggi ditemukan pada kelompok zeolit dengan modifikasi AgNO3 0,1 M. Berdasarkan hasil yang diperoleh dapat disimpulkan bahwa aktivasi zeolit alam dapat menghilangkan material-material pengotor yang terdapat pada zeolit sehingga akan memudahkan modifikasi zeolit dengan ion perak. Jumlah unsur ion perak akan meningkat seiring dengan meningkatnya konsentrasi larutan perak nitrat yang digunakan.","PeriodicalId":33035,"journal":{"name":"CHEESA","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80678615","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
Optimization of Activated Charcoal Synthesis from Sugar Palm Shells for the Adsorption of Iron Ions in Batik Waste 糖棕榈壳活性炭吸附蜡染废渣中铁离子的工艺优化
CHEESA Pub Date : 2021-12-24 DOI: 10.25273/cheesa.v4i2.9609.109-118
H. Oktavianty, S. Sunardi, Elfandra Pramudito Laksono
{"title":"Optimization of Activated Charcoal Synthesis from Sugar Palm Shells for the Adsorption of Iron Ions in Batik Waste","authors":"H. Oktavianty, S. Sunardi, Elfandra Pramudito Laksono","doi":"10.25273/cheesa.v4i2.9609.109-118","DOIUrl":"https://doi.org/10.25273/cheesa.v4i2.9609.109-118","url":null,"abstract":"<p class=\"E-JOURNALAbstractBodyEnglish\">Efforts have been made to improve the synthesis of activated charcoal from sugar palm shells (Arenga pinnata). Therefore, the purpose of this study was to use the activated charcoal from sugar palm shells to adsorb Iron (Fe) ions contained in batik waste. Charcoal was activated with a 20-30% phosphoric acid solution (H<sub>3</sub>PO<sub>4</sub>), dried at 110 °C for 3 hours, and then calcined at a range of 700-900 °C for 3-5 hours. The results demonstrated that the optimal adsorption of Fe ions was achieved under conditions of 25% H<sub>3</sub>PO<sub>4</sub> concentration, calcination at 800 °C for 4 hours, yielding 46.94% adsorbed Fe, and the largest surface area of 45.087 m<sup>2</sup>/g.</p>","PeriodicalId":33035,"journal":{"name":"CHEESA","volume":"64 5 Pt 2 Suppl 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89848349","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
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