bluuebunny/crossref_metadata_2025_split huggingface dataset:
Study on the anodic oxidation performance of a rolled AA5252 aluminum alloy sheet with different thicknesses
Authors: Wu Jianxin , Ye Qilua , Yang Bin , Gao Chong 
Published: November 2021

Abstract
Microstructures of AA5252 aluminum alloy sheets from surface to the center were observed by use of scanning electron microscope with electron backscatter detector assembly, and treated by anodic oxidation. Results showed that changes of the grain structures and textures of the AA5252 alloy sheets occur from the surface to the center layers. The anodic oxidation surface quality of the AA5252 aluminum alloy is closely related to the area ratio and distribution uniformity of Cube texture.
Effect of Hindered Amine Light Stabilizer on Properties of HDPE/Kaolin Composites for Hydraulic Gate and its Mechanism Analysis
Authors: Song Li , Liu Huaqiang , Yang Bin , Cai Yiping 
Published: November 2021

Abstract
High density polyethylene (HDPE)/kaolin composites with different hindered Amine light stabilizers were prepared by blending granulation. The mechanical properties and dynamic thermodynamic changes before and after aging were discussed and studied. The precipitates were analyzed by FI-IR and H1-NMR, and the precipitation reason and anti-aging difference of different light stabilizers were discussed and compared. The results showed that the mechanical properties retention rates of light stabilizer 2020, light stabilizer 944, light stabilizer 123, light stabi-lizer 770 and light stabilizer 292 were 87.1%, 81.7% and 79.1%, respectively %Light stabilizer 2020 and light stabilizer 944 with large molecular weight are more easily compatible with the system, not easy to precipitate, and have a better an-ti-aging effect. At the same time, light stabilizer 2020 with dense hindered amine structure has excellent anti-aging effect. This study provides a reference for the selection of light stabilizer and failure analysis of light aging resistance of HDPE system.
Parametric Analysis on Three-Points Bending Test of Typical Skin-Stringer Structure
Authors: Wang Zhe , Chen Xiangming , Zou Peng , Li Xinxiang , Liang Qingxianglong , Yang Junchao 
Published: November 2021

Abstract
Stringer-skin debonding was one of the most important failure models in stiffened composite panels. In this paper, three-points bending tests were performed on representative stringer-skin structure of composite wing to simulate the flange-skin interface behavior and to obtain the failure mode and failure load. A 3D finite element model was built by using ABAQUS software to simulate interface failure with cohesive zone model. The numerical results agree well with test data, which validate the rationality of the finite element model. Hence the influence of factors during manufacture, installation and test in three-points bending tests, such as off-axis displacement, inclination loading and span, is studied. Results show that the initial debonding load and failure load of specimen decrease as the displacement from loading axis to central axis increases. The load of specimen decreases as the span increases. The influence of inclination loading is insignificant when the inclination angle is less than 6 degree. However, the initial debonding load and failure load of specimen decreases in varying degrees as the inclination loads increases. Furthermore, the initial debonding load decreases rapidly.
Development of Pictorial Card “Kencana” (Disaster Preparation) as a Media of Group Guidance Services in SMP N 1 Wonosari
Authors: Purnama Diana Septi , Oktaviana Naafi’ Fajar 
Published: November 2021

Abstract
This study is aimed to develop a product called the Kartu Kesiapsiagaan Bencana “KENCANA” (Disaster Preparedness) pictorial card which can be used as a media for group guidance services in junior high schools. The material theme of this card is physical, psychological, social, and spiritual disaster preparedness. This research is an R&D (Research and Development) research by adopting the Borg and Gall development model. The stages of this research consisted of: 1) the data collection stage, 2) the product planning stage, 3) the product development stage and 4) the validation and testing stages. The research subjects were 8th grade students of SMP N 1 Wonosari, Gunungkidul. The results showed that the pictorial cards KENCANA (Disaster Preparedness) were suitable for being used by the counseling teacher as a media for group guidance services and also used as a media for evaluating student understanding of the preparedness material that had been previously presented with good criteria based on all aspects that have been validated and tested.
Spatial Evapotranspiration Modeling Assisted With Landsat 8 Image Using Sebal And Geographically Weighted Regression Methods In Magelang District
Authors: Nugraha AF , Hadi BS 
Published: November 2021

Abstract
Information about evapotranspiration is very important in relation to vegetation because it can be used for planning both in urban planning and agriculture. Magelang Regency has a lot of vegetated green land, both agricultural and non-agricultural and has no information about evapotranspiration. The calculation of evapotranspiration uses the SEBAL (Surface Energy Balance Algorithm for Land) method and modeling uses the GWR (Geographiccaly Weighted Regression) model. Calculation and modeling assisted by QGIS 2.14, QGIS 3.6, SPSS 20, and GWR 4.09 applications. The results showed that (1) GWR evapotranspiration model with significance (sig.) 5% is divided into 3 sub-district groups according to the significant variables in the sub-district (2) NDVI and Surface Albedo variables have a small effect on a global scale and have a large effect on a local scale.
Commercial Multirotor UAV Campaign on Data Acquisition for Disaster Management
Authors: Putro S T , Nucifera F , Febriarta E 
Published: November 2021

Abstract
UAV usage and interest have shown great popularity recently, especially for commercial multirotor. It is cheap, easy to use, flexible, and has many capabilities. That is why multirotor is widely chosen in disaster management. As a technology, it possesses certain aspects. Review of how the implementation of multirotor UAV in disaster management is important to gain improvement in the technology and evaluate at how we use it. This paper provides insight into commercial multirotor UAV campaign in disaster management through literature study and personal experience in a related theme. Similar ideas on the development of UAV and its application in disaster management then combine with personal experience was used to identify the advantage, disadvantages, challenges, and opportunities of multirotor drone applications. The result suggested that multirotor UAV has limited capability in conducting disaster management campaigns. The weakness in deploying multirotor is related to the lack of technology which may be overcome in the future as the development in hardware and software technology.
Settlement Suitability Analysis Based on the Catastrophic Eruption of Sinabung
Authors: Utami W , Rahmat A , Sialagan BH , Exaudia S , Turnip AL 
Published: November 2021

Abstract
Mount Sinabung is an active volcano after being 'dormant' for a long time since the 1600s. Sinabung has begun to show its activities from 2010 to 2020, so that it has a long impact on community activities, damage to settlements, agricultural and threats to the lives of residents around Sinabung. This study aims to determine the conditions of land use in disaster-prone areas in relation to spatial patterns and levels of disaster prone. The research method is carried out through spatial analysis by overlaying the land use map with the spatial planning map to produce a land use suitability map. The spatial pattern suitability map is overlaid with a disaster hazard map to determine the level of security in settlements. The results showed that 5 affected Districts, namely in the Districts of Naman Teran, Payung, Simpang Empat, Tiganderket, Munte, the safe zone was 145.66 hectares, the less safe zone was 0.98 hectares, the unsafe zone was 36.91 hectares and the very insecure zone was 1.25 hectares. It is hoped that the spatial analysis regarding the distribution of safe locations for settlements is expected to become a policy material for the government to formulate arrangements for the use and utilization of space so that the spatial planning policies that are established are in line with efforts to reduce the risk of the eruption of Mount Sinabung disaster.
Antifungal activity of crude extracts of Ageratum conyzoides and Chromolaena odorata for management of Lasiodiplodia theobromae and Lasiodiplodia pseudotheobromae through in vitro evaluation
Authors: Asman Asman , Adelvia  , Rosmana Ade , Sjam Sylvia , Hamdayanty  , Fakhruddin Andi , Natsir Nuni Ujiani 
Published: November 2021

Abstract

Lasiodiplodia is an important genus of fungi causing destructive diseases on perennial crops, including cocoa. Two crucial species of Lasiodiplodia that cause diseases in cocoa are Lasiodiplodia theobromae and Lasiodiplodia pseutheobromae. A variety of weeds is the potential to be applied as botanical fungicides to control the pathogens. The main objective of this study was to evaluate Ageratum conyzoides and Chromolaena odorata leaf extract to inhibit the growth of L. theobromae and L. pseudotheobromae on a synthetic medium. Solvent organic was methanol for weed extraction with a ratio of 1:5. The experiment was conducted through the poison food technique method, both in the solid and liquid medium in three different concentrations, 1, 3, and 5%. The result showed that A. conyzoides and C. odorata were significantly inhibited the colony growth of both Lasiodiplodia in all concentrations in a solid medium. A. conyzoides performed better than C. odorata in all concentrations of both Lasiodiplodia in inhibition. A. conyzoides 5% performed well to suppress the colony growth of L. pseudotheobromae (100%), followed by A. conyzoides 3% and A. conyzoides 1%. A. conyzoides 5% able to inhibit the colony growth of L. theobromae until 100%, followed by A. conyzoides 3% and 1%. Meanwhile, A. conyzoides and C. odorata extract tested on PDB medium at 1, 3, and 5% reduced the fungal biomass significantly at all concentrations. C. odorata was found most effective in inhibiting fungal biomass of both pathogens either on wet weight or on dry weight at 1, 3, and 5% %. A. conyzoides and C. odorata can manage the growth of L. theobromae and L. pseudotheobromae through in vitro conditions.
Identification of the potential and palm sap characteristics for palm sugar business development in Lombo Village, Sidrap Regency
Authors: Syahidah  , Makkarennu  , Caroline A , Rizaldy A A , Syahid M , Fitriwati  , Syahwiah A 
Published: November 2021

Abstract
Sugar palm is a commodity that has a high value of benefits and has become one of the home industries that are mostly cultivated by rural communities in Indonesia. Likewise, the community in Lombo Village, Pituriase sub-district, Sidrap district also cultivates palm sugar as a source of income in addition to their main job as a farmer. The purpose of this study were to identify the potential and characteristics of sugar palm and palm sap to serve as the basis for developing the palm sugar business in Lombo Village. This research was conducted using a sampling method to identify the potential of palm trees and interview methods to identify production data and characteristics of palm sap. The results showed that the number of sugar palm trees in Lombo Village was 2,038 trees consisting of 118 trees being tapped, 585 trees ready to be tapped, and 1,335 trees still waiting for about 3-4 years to be tapped. The average sap production is 995 liters/day and produces 139.2 kg/day of sugar, so it can be seen that the content of brix of palm sap in Lombo Village is 14%. The selling price of sugar produced by the community is Rp. 25,000- per kg so that the sales received by the craftsmen in Lombo Village is Rp. 3,480,000 - per day or Rp. 108,750,-/craftsman/day.
Morphological diversity and relationship among cashew (Anacardium occidentale L) individuals in three districts of Southeast Sulawesi, Indonesia
Authors: Boer D. , Ladati N. , Jumarno  , Irwan  , Arsyad M A , Larekeng S H 
Published: November 2021

Abstract
Cashew (Anacardium occidentale L), a species belonging to the family Anacardiaceae, has been cultivated throughout most of Indonesia’s areas and has become a priority commodity in Southeast Sulawesi for years. However, the information about its variation on morphology and relationship among individuals are still limited. This study aimed to determine the morphological variations and relationships among cashew individuals in three districts (Konawe, South Konawe, and East Kolaka) of Southeast Sulawesi. As many as ninety individuals were analyzed on 15 morphological variables for the variations and 47 variables using the complete linkage method based on Gower distance for the clustering. The coefficients of variation were varied on all evaluated variables. The highest was the height of main branches (cm), ranging from 47.32 % to 73.72 %. Meanwhile, nut length had the lowest coefficient of variation (6.75%-7.99%). The individuals were divided into two main clusters with two sub-clusters for each cluster.
Physicochemical and color characteristic of the Bawakaraeng Forest Honey, South Sulawesi
Authors: Syahriati  , UA Nur Fitriani , Latifah Husnah , Nirwana  
Published: November 2021

Abstract
Honey is a thick liquid produced by bees consisting of natural sugars derived from flower nectar or plant secretions. The content of monosaccharides and fructose causes the sweetness of honey, and glucose compounds are naturally found in honey derived from the juices of food carried by bees. This study aims to determine physicochemical and color characteristics of forest honey from Bawakaraeng Mountain with the quality of honey obtained in accordance with the Indonesian National Standard. Characterization of the physicochemical quality of total sugar content was measured using a refractometer, acidity by pH meter, and color characteristics by Hunter Methods using chromameter instruments. In the results, color characterization of forest honey L* 22.28-22.46; a* 3.30-3.37; b* 4.74-4.87, L value indicates a lightness level that tends to be dark and a yellow-red chromatic color range (YR). Then water content is 21.06%, total sugar content is 49.53%, and pH 4. Finally, physicochemical and color characteristics analysis of forest honey needs to be studied more rapidly on the content of bioactive compounds and their benefits for health. The potential of forest honey from the Sinjai Regency is a new functional food that provides high antioxidant content value and rich nutrients.
Health assessment of vegetation composition in the reclamation area of PT Natarang Mining, Tanggamus Regency, Lampung Province
Authors: Safe’i Rahmat , Arwanda Elmo Rialdy , Doria Cici , Taskirawati Ira 
Published: November 2021

AbstractReclamation is a recovery activity in mining areas, one of which is revegetation. The success of revegetation plants can be seen from the health of the composition and structure of the vegetation when the trees are six years old and over. This study aims to determine the health of the vegetation composition (location, type, and level of tree damage) in the reclamation area of PT Natarang Mining, Tanggamus Regency, Lampung Province. The location of this research is in the area around the main office of PT Natarang Mining, Way Linggo Forest, Bandar Negeri Semuong, Tanggamus Regency, covering an area of 2.97 Ha. The research was conducted through vegetation analysis using the circular plot method and assessing the health of the vegetation composition based on the damage index at the plot level. The results showed that tree vegetation obtained 12 species. The most common tree species found wasFalcataria moluccana(Sengon) which amounted to 22 individuals. The most significant contribution of tree species indicated by the highest importance value index wasFalcataria moluccana. The location of most damage found in most of the plots was at the bottom of the stem (code 3) and the bottom and top of the stem (code 4). Types of open wound damage (code 03) and gall rust (code 26) were the most dominant causes of damage, with an average damage rate of 35% and 22%, respectively. The health value of the vegetation composition has a value range of 1.20 – 2.00. The average health value of the vegetation composition is 1.50, which is included in the medium category.
Prediction of erosion and sedimentation rates using SWAT (soil and water assessment tool) method in Malino Sub Watershed Jeneberang Watershed
Authors: Soma Andang Suryana , Wahyuni  , Musdalifah  
Published: November 2021

Abstract
The increase in population will encourage the community to transfer the function of agricultural land in the Malino sub-watershed. Land use dramatically affects the level of erosion and sedimentation. The use of SWAT models can identify, assess, and evaluate the extent of a watershed’s problems. This study aims to determine the spatial distribution of HRU and analyze the rate of erosion and sedimentation in the Malino sub-watershed. The results showed that the most HRU is found in secondary dryland forests, as much as 624 HRU (32.21%). The level of erosion rate of the category is very light with an erosion value of 5.21 tons/ha/year, light 31.19 tons/ha/year, moderate 104.91 tons/ha/year, weight 267.10 tons/ha/year, and hefty 616.74 tons/ha/year. The most significant sedimentation rate was found in sub-watershed 18 of 71.97 tons/ha/year and subwatershed 10 of 13.31 tons/ha/year.
A mixture of red kidney beans (Phaseolus vulgaris L.) and bee bread of honey bees (Wallacetrigona incise) as artificial feed for silkworm (Bombyx mori L.)
Authors: Nuraeni Sitti , Latif Nurfadilah , Prastiyo Andi , Nurfausiah  , Armidha Nirmala 
Published: November 2021

Abstract
The supply of silk thread in Indonesia is only able to meet 5% of the national demand, and 95% must import it. Success in silk thread production comes from natural silk cultivation activities, namely mulberry cultivation. Meanwhile, the productivity of mulberry leaves in Indonesia is very low. This study aims to determine the feeding ability, growth of silkworm resistance, the effect of cocoon productivity pro4duced by silkworms when fed artificial feed. This research was conducted at the Forest Protection and Entomology Laboratory, Hasanuddin University. Artificial feed formulation in the form of a mixture of red kidney beans and bee bread with the comparison of mulberry leaves, red kidney beans, and bee bread were P1 (33:24:25), P2 (45:24:15); P3 (mulberry leaves and red kidney beans 40:44), P4 (mulberry leaves and bee bread 40:44), and P5 (natural feed of fresh mulberry leaves as control). Treatments P1, P2, P3, and P4 were added agar, vitamin C, sugar, and 100 ml of distilled water. The results of this study indicate that the percentage of artificial feed can be consumed 3 g/larva/day. Parameters of 5th instar larval survival, growth index, and cocoon quality in all feed compositions showed no significant differences.
The effect of competence and entrepreneurial capability of farmers on the growth of Bali Cattle farming business
Authors: Saleh M I , Tanri G R , Siregar A R , Amrullah  , Hatta M , Darwis M , Astaman P 
Published: November 2021

Abstract
One of the emphasis on the performance of the Bali cattle business is to improve the competence and entrepreneurial skills of farmers, which until now are still considered low. The purpose of this study was to determine the effect of the competence and entrepreneurial ability of farmers on the growth of Bali cattle farming in Tanete Riaja District, Barru Regency, South Sulawesi Province. This type of research is explanatory research. Research based on livestock farmer groups with a population of Bali cattle farmers as many as 140 farmers. Determination of the number of samples using the Slovin formula and stratified random sampling method as many as 58 people with details of the Livestock Farmer Group Lempangeng 12 people, Makkawaru 22 people, Sipurennue 12 people and Lempang 12 people. Collecting data through interviews with the help of questionnaires measured using a Likert scale, that is a score of 1 to 3 with category 1 = not good; 2 = moderate; and 3 = good. The data collected were analyzed using multiple linear regression. The results showed that the competence of farmers and the entrepreneurial ability of farmers had a significant effect on the growth of the Bali cattle business.
Cyanobacteria in freshwater Lake Dikoye (Pribaikalsky district, Buryatia, Siberia) under intensive eutrophication
Authors: Tsyrenova D D , Zaitseva S V , Dagurova O P , Dambaev V B , Barkhutova D D 
Published: November 2021

Abstract
We studied freshwater Lake Dikoye located in the coastal zone of Lake Baikal. Negative changes associated with cyanobacterial bloom were observed in the lake. Phototrophs were represented by cyanobacteria, green algae, and diatoms. In the microbial community, Cyanobacteria were the dominant phylum and accounted for up to 48% of the total diversity. Cyanobacteria were represented by 7 genera and 9 species. Microcystis aeruginosa, a potentially toxic species, was dominant among cyanobacteria. According to chlorophyll a content, the lake should be assigned to eutrophic ones. The bacterial eutrophication index for the lake studied varied from 1.17 (middle eutrophic) to 28.2 (hypereutrophic) during cyanobacterial bloom.
The composition of haypiles of Turuchan pika (Preliminary analysis)
Authors: Lenkhoboeva S Y , Chepinoga V V , Borisova N G , Chimitov D G , Belova V A , Skornyakova A M , Nikulin A A , Nikulina N A , Ilchenko O G 
Published: November 2021

Abstract
The species composition and abundance of plants in the Turuchan pika habitat and in its haypiles were studied in the talus surrounded by taiga on the Primorsky ridge. With the Ivlev’s Electivity Index, it was found that the pika was selective in collecting food: Veratrum nigrum and Urtica dioica, being relatively rare in the habitat, were highly preferred and abundant in the haypiles. The bulk of the haypiles also consisted of 4 species (Rubus matsumuranus, Sambucus sibirica, Populus tremula, Spiraea media) with a high abundance in the habitat and collected proportionally with their abundance. Many plant species being abundant in the habitat were not stored by pikas.
Biogenic elements and organic matter production in the ecosystem of Lake Arey, Transbaikal region, Russia
Authors: Tsybekmitova G Ts , Morozova M O 
Published: November 2021

Abstract
Maintaining an ecological balance of Lake Arey is crucial in terms of nature conservation. Lake Arey is located in Eastern Siberia and is a central object of a designated conservation area of regional significance. The lake is used for recreation (organized and unorganized tourism, sport fishing, mud collection for balneological purposes) not only by residents but also by holidaymakers from other regions. In terms of mineralization level, Lake Arey is a freshwater body. Significant factors affecting the aquatic ecosystem are temperature, TDS, pH and dissolved oxygen, depth, and turbidity. High contents of ammonium ions are observed in the ecosystem. The concentration of dissolved inorganic phosphorus is 23.6% of total phosphorus. The ratio of PO (permanganate oxidizing ability of organic matter) to COD (chemical oxygen demand) indicates active processes of production, mineralization, and transformation of organic matter in the water body. Carotenoids prevail in planktonic pigments. The chlorophyll a amount is insignificant. The chlorophyll b content increases from July to September. Currently, Lake Arey belongs to the α-mesotrophic type of water body. However, increased anthropogenic load and high-water years can promote eutrophication processes.