Journal of Symbolic Logic最新文献_第5页

Vojvodina Slovak Language - A Phenomenon of Traditions and the Present 伏伊伏丁那斯洛伐克语-传统和现在的现象

IF 0.6 3区数学

Journal of Symbolic Logic Pub Date : 2021-04-30 DOI: 10.30530/JSL.2021.04.26.1.1

Eleonóra Zvalená

引用次数: 0

The Concept MUSIC in a Russian Linguistic Worldview (based on lexicographic sources) 俄语语言世界观中的音乐概念(基于词典来源)

IF 0.6 3区数学

Journal of Symbolic Logic Pub Date : 2021-04-30 DOI: 10.30530/JSL.2021.04.26.1.51

S. A. Shagaeva

引用次数: 0

Repertory of verbal prefixal formations from Montenegro in Vuk’s Rječnik Vuk 's rje<e:1> nik中黑山的词性前缀形式汇编

IF 0.6 3区数学

Journal of Symbolic Logic Pub Date : 2021-04-30 DOI: 10.30530/JSL.2021.04.26.1.121

Vladimir Ostojic

引用次数: 0

A Study of numerology on the material of Russian phraseological units with numerals 数字命理学对俄语数字词组单位材料的研究

IF 0.6 3区数学

Journal of Symbolic Logic Pub Date : 2021-04-30 DOI: 10.30530/JSL.2021.04.26.1.37

Hyunjung Son

引用次数: 0

Assessment of the Physical Quality of Eucalyptus pellita Seedlings from Shoot Cutting by Age Level 不同年龄层对褐皮桉扦插苗物理品质的评价

IF 0.6 3区数学

Journal of Symbolic Logic Pub Date : 2021-04-28 DOI: 10.23960/JSL29280-290

H. A. Ekamawanti, Lenawati Simanjuntak, A. Muin

{"title":"Assessment of the Physical Quality of Eucalyptus pellita Seedlings from Shoot Cutting by Age Level","authors":"H. A. Ekamawanti, Lenawati Simanjuntak, A. Muin","doi":"10.23960/JSL29280-290","DOIUrl":"https://doi.org/10.23960/JSL29280-290","url":null,"abstract":"The criteria for target seedling of Eucalyptus pellita F. Muell are at least 90 day s old, with consequences for the length of stay of the seedlings in the nursery. This study must assess the suitability as a target seedling first if it wants to plant the seedlings under 90 days old in the field. The research aimed to evaluate and obtain the regression equation for the seedling ’ s age with the seedling ’ s morphological characters. The shoot seedlings cuttings aged 45, 60, 75, and 90 days after planting in the cocopeat growing medium were assessed. The study was used a survey method with a purposive sampling technique to obtain 60 samples by assess ing the growth and appearance s of the seedling. Furthermore, 15 samples were taken at random to determine the dry weight of the seedlings. Seedlings aged 75 and 90 days indicated the standard criteria as target seedlings for height, diameter, number of leaves, seedling ’ s health, shoot appearance s , and seedling roots. The two seedlings ’ age levels have a sturdiness index of 8.34-9.78; shoot-root ratio 3.9-4.5; and seedling quality index (SQI) 0.22-0.23. Seedling age had a powerful positive correlation with the sturdiness index and SQI ( r = 0.84 and r = 0.96). The regression equation of the sturdiness index is y = 0.048 x + 5.435 ( R 2 = 0.996) and SQI is y = 0.004 x - 0.064 ( R 2 = 0.926). This research implies that 75 and 90 - days seedlings can be considered as one of the criteria for the age of E. pellita shoot cuttings as the target seedling in the SOP of PT. Finnantara Intiga. Keywords: cocopeat, Eucalyptus pellita , Seedling Quality index, shoot cuttings, target seedling","PeriodicalId":17088,"journal":{"name":"Journal of Symbolic Logic","volume":"27 1","pages":"280-290"},"PeriodicalIF":0.6,"publicationDate":"2021-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72851249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bio-Polyurethane Resins Derived from Liquid Fractions of Lignin for the Modification of Ramie Fibers 以木质素液体馏分为原料制备改性苎麻纤维用生物聚氨酯树脂

IF 0.6 3区数学

Journal of Symbolic Logic Pub Date : 2021-04-08 DOI: 10.23960/JSL29223-238

Manggar Arum Aristri, M. A. R. Lubis, R. P. B. Laksana, F. Falah, W. Fatriasari, M. Ismayati, A. P. Wulandari, N. Nurindah, Muhammad Rasyidur Ridho

{"title":"Bio-Polyurethane Resins Derived from Liquid Fractions of Lignin for the Modification of Ramie Fibers","authors":"Manggar Arum Aristri, M. A. R. Lubis, R. P. B. Laksana, F. Falah, W. Fatriasari, M. Ismayati, A. P. Wulandari, N. Nurindah, Muhammad Rasyidur Ridho","doi":"10.23960/JSL29223-238","DOIUrl":"https://doi.org/10.23960/JSL29223-238","url":null,"abstract":"In this study, technical lignin from black liquor was used as a pre-polymer for the preparation of bio-polyurethane (Bio-PU) resins. Briefly, the isolated lignin was fractionated using ethyl acetate (EtAc) and methanol (MeOH). The liquid fractions of lignin, such as lignin-EtAc (L-EtAc) and lignin-methanol (L-MeOH), were mixed with 10% of polymeric isocyanate (based on the weig ht of liquid fractions) to obtain Bio-PU resins. The isolate d lignin, fractionated lignin, and lignin-derived Bio-PU resins were characterized using several techniques. The obtained Bio-PU resins were then used to modify ramie fibers using vacuum impregnation method. Fourier Transform Infrared (FTIR) spectroscopy, Differential Scanning Calorimetry (DSC), and Thermogravimetric Analysis (TGA) revealed that the isolated lignin had quite similar characteristics to the lignin standar d . Fractionation of lignin with EtAc and MeOH altered its characteristics. FTIR, DSC, and TGA showed that solid fractions of lignin had similar characteristics to lignin standard and isolated lignin, while the liquid fractions had characteristics from lignin and the solvents. The absorption band of isocyanate (−N=C=O) groups was shifted to 2285 cm −1 from 2240 cm −1 owing to the reaction with the −OH groups in lignin, forming urethane (R−NH−C=O−R) groups at 1605 cm −1 in Bio-PU resins. Thermal properties of Bio-PU resins derived from L-EtAc exhibited greater endothermic reaction compared to Bio-PU-L-MeOH. As a result, the free −N=C=O groups in Bio-PU resins have reacted with –OH groups on the surface of ramie fibers and improved its thermal properties. Modification of ramie fibers with Bio-PU resins improved the fibers’ thermal stability by 15% using Bio-PU-LEtAc for 60 min of impregnation. Keywords: Bio-polyurethane resins, Impregnation, Lignin fractions, Ramie fibers, Thermal stability","PeriodicalId":17088,"journal":{"name":"Journal of Symbolic Logic","volume":"185 1","pages":"223-238"},"PeriodicalIF":0.6,"publicationDate":"2021-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77547305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Stakeholder Analysis on Sungai Wain Protected Forest Management in Balikpapan City, East Kalimantan Province 东加里曼丹省巴厘巴板市双溪湾保护区森林经营的利益相关者分析

IF 0.6 3区数学

Journal of Symbolic Logic Pub Date : 2021-04-08 DOI: 10.23960/JSL29252-268

Sukristiyono Sukristiyono, R. Purwanto, H. Suryatmojo, S. Sumardi

{"title":"Stakeholder Analysis on Sungai Wain Protected Forest Management in Balikpapan City, East Kalimantan Province","authors":"Sukristiyono Sukristiyono, R. Purwanto, H. Suryatmojo, S. Sumardi","doi":"10.23960/JSL29252-268","DOIUrl":"https://doi.org/10.23960/JSL29252-268","url":null,"abstract":"Sungai Wain Protected Forest is one of the conservation areas in Balikpapan City which has an essential role in supporting the life of the city ’ s people . C urrently , its existence is threatened due to the various activities and overlapping interests of stakeholders involved in managing the forest . Therefore, forest management that is supported by these stakeholders is urgently needed. T h is study aimed to identify the stakeholders involved and explain their influences, interests , and roles in Sungai Wain Protected Forest management. Data were collected through observation, interviews, and questionnaires. The r espondents were selected using the purposive sampling method, and stakeholder mapping was used to analyze it. The results show ed that the stakeholders classified as key players include the Balikpapan Protected Forest Management Unit (KPHL Balikpapan ), the East Kalimantan Provincial Forestry Office , Pertamina UP V Balikpapan, and the NGO Foundation Pro Natura. Multi - stakeholder management could be an alternative model for managing the Sungai Wain Protected Forest to synchronize stakeholders ’ interests. The KPHL Balikpapan could act as a leading player and become a driving force in the Sungai Wain Protected Forest ’ s management efforts due to their appropriate main duties and functions . Hence, the coordination, communication, and cooperation between stakeholders could be well-formed to achieve the management objectives . Keywords: forest management, multi-stakeholder management, stakeholders, Sungai Wain Protected Forest","PeriodicalId":17088,"journal":{"name":"Journal of Symbolic Logic","volume":"39 1","pages":"252-268"},"PeriodicalIF":0.6,"publicationDate":"2021-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73192718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Hubungan Letak Aksial dan Variasi Ketebalan Papan terhadap Penyusunan Skedul Pengeringan Kayu Cemara Gunung (Casuarina Junghuhniana Miq.) (Relationship Between Axial Location and Board Thickness Variation on the Development of Drying Schedule of Cemara Gunung (Casuarina Junghuhniana Miq.))

IF 0.6 3区数学

Journal of Symbolic Logic Pub Date : 2021-01-29 DOI: 10.23960/JSL19121-137

Hanan Purana Putera, T. Listyanto

{"title":"Hubungan Letak Aksial dan Variasi Ketebalan Papan terhadap Penyusunan Skedul Pengeringan Kayu Cemara Gunung (Casuarina Junghuhniana Miq.) (Relationship Between Axial Location and Board Thickness Variation on the Development of Drying Schedule of Cemara Gunung (Casuarina Junghuhniana Miq.))","authors":"Hanan Purana Putera, T. Listyanto","doi":"10.23960/JSL19121-137","DOIUrl":"https://doi.org/10.23960/JSL19121-137","url":null,"abstract":"The research aim ed to determine drying characteristics, developing drying schedule, and its relationship to the axial position of the sample on the stem , board thickness, specific gravity, and percentage of heartwood. This research used c emara gunung ( Casuarina junghuhniana Miq.) as samples with 6 rep lications and 2 factors that are the axial location (bottom, middle, and top) and board thickness (2 cm , 3 cm , and 4 cm). T he drying schedule development followed the Terazawa Method, in which the samples were dried within a temperature of 100°C for 72 h. The proper schedule was then applied and evaluated. The research obtained 11 variations of the drying schedule. The chi-square analysis results indicated that the board thickness and percentage of heartwood were significantly correlated with the development of the drying schedule. The d rying schedule using board thickness of 2 cm, 3 cm, and 4 cm can be dried with an initial temperature of 60°C, 50°C, and 47°C , respectively. The w et-bulb depression was 4 °C , 2°C, and 2°C, respectively, and the final temperature was 90°C, 80°C , and 65°C, respectively . Keywords: axial, board-thickness, Casuarina junghuhniana , drying-schedule, Terazawa method","PeriodicalId":17088,"journal":{"name":"Journal of Symbolic Logic","volume":"83 1","pages":"121-137"},"PeriodicalIF":0.6,"publicationDate":"2021-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88725301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pengaruh Karakteristik Kimia terhadap Sifat Mekanis dan Keawetan Alami Tiga Jenis Kayu Kurang Digunakan (Effect of Chemical Characteristics on Mechanical and Natural Durability Properties of Three Lesser-Used Wood Species)

IF 0.6 3区数学

Journal of Symbolic Logic Pub Date : 2021-01-29 DOI: 10.23960/JSL19161-178

S. Augustina, I. Wahyudi, I. Darmawan, Jamaludin Malik, Y. Kojima, Taiyo Okada, Naoki Okano

{"title":"Pengaruh Karakteristik Kimia terhadap Sifat Mekanis dan Keawetan Alami Tiga Jenis Kayu Kurang Digunakan (Effect of Chemical Characteristics on Mechanical and Natural Durability Properties of Three Lesser-Used Wood Species)","authors":"S. Augustina, I. Wahyudi, I. Darmawan, Jamaludin Malik, Y. Kojima, Taiyo Okada, Naoki Okano","doi":"10.23960/JSL19161-178","DOIUrl":"https://doi.org/10.23960/JSL19161-178","url":null,"abstract":"C hemical, mechanical, and natural durability properties of three lesser-used wood species from North Kalimantan, namely nyatoh ( Palaquium lanceolatum ), pisang putih ( Mezze t tia leptopoda ), and sepetir ( Sindora wa l lichii ) woods , were analyzed to seek the interrelationships among them and give an overview related to their utilization . T he results showed that pH values of three wood species were categorized into moderate to weak acid levels . The extractive content s in hot and cold water a s well as in NaOH 1% of s epetir wood were higher than those of nyatoh and pisang putih woods. In contrast, the solubility in ethanol-benzene of nyatoh wood was the highe st . The a sh content in the three wood species were categorized into medium level . L ignin contents in sepetir and nyatoh wood s were classified as moderate, while lignin content in pisang putih wood was high. Holocellulose and hemicellulose contents in sepetir wood were higher than those in nyatoh and pisang putih woods, whereas alpha cellulose in sepetir wood was the lowe st . MOE values of the three wood species were classified as strength class of IV ‒ V, while MOR and compression parallel to the grain were classified as strength class of IV. The hardness value of nyatoh wood was higher than that of other woods. The durability of the three wood species was classified into poor (low durable). The relationship between chemical characteristics and mechanical properties of wood was primarily influenced by its major components (cellulose, hemicellulose, and lignin) , whereas natural durability was influenced by its minor components (extractives and inorganic materials) . Keywords: lesser-used wood species, mechanical properties, natural durability, parameters interrelationship , wood chemical characteristics","PeriodicalId":17088,"journal":{"name":"Journal of Symbolic Logic","volume":"24 1","pages":"161-178"},"PeriodicalIF":0.6,"publicationDate":"2021-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87134973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Pemodelan Spasial Kesesuaian Habitat Elang Jawa (Nisaetus bartelsi) di Taman Nasional Bromo Tengger Semeru (Spatial Modeling of Javan Hawk-Eagle (Nisaetus bartelsi) Habitat Suitability in Bromo Tengger Semeru National Park)

IF 0.6 3区数学

Journal of Symbolic Logic Pub Date : 2021-01-29 DOI: 10.23960/JSL19179-189

N. A. Aryanti, T. S. S. D. Susilo, A. N. Ningtyas, Mahmuddin Rahmadana

{"title":"Pemodelan Spasial Kesesuaian Habitat Elang Jawa (Nisaetus bartelsi) di Taman Nasional Bromo Tengger Semeru (Spatial Modeling of Javan Hawk-Eagle (Nisaetus bartelsi) Habitat Suitability in Bromo Tengger Semeru National Park)","authors":"N. A. Aryanti, T. S. S. D. Susilo, A. N. Ningtyas, Mahmuddin Rahmadana","doi":"10.23960/JSL19179-189","DOIUrl":"https://doi.org/10.23960/JSL19179-189","url":null,"abstract":"Bromo Tengger Semeru National Park (TNBTS) is a conservation area as the habitat of endemic species in Java Island, such as the Javan hawk-eagle ( Nisaetus bartelsi ) . One of the spatial models of habitat is the Ecological Niche Modeling ( ENM ) approach. This study aimed to determine habitat suitability for the Javan hawk-eagle in TNBTS. The research was conducted from September 2019 to January 2020. The habitat suitability model used the present coordinate point data and the Javan hawk-eagle habitat environment variables. The data were then analyzed to build a Javan hawk-eagle habitat suitability model using the Maximum Entropy (MaxEnt) algorithm . The results showed three models of habitat suitability categories, i.e.: high of 15,131.18 ha (30%), medium 11,216.61 ha (22%), and low 23,298.41 ha (48%). The evaluation of the Javan hawk-eagle habitat suitability model in TNBTS has an excellent model accuracy with an AUC value of 0 . 9 7 and a standard deviation of 0 . 93 . Keywords: endemic, habitat, Javan hawk-eagle, maximum entropy, spatial modeling","PeriodicalId":17088,"journal":{"name":"Journal of Symbolic Logic","volume":"6 Suppl 2 1","pages":"179-189"},"PeriodicalIF":0.6,"publicationDate":"2021-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72989594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0