bluuebunny/crossref_metadata_2025_split huggingface dataset:
“They are just a danger”
Authors: Jereza Rachelle , Perrino Sabina 
Published: March 2020

Abstract
In recent years, there has been much discussion about the role of social media platforms in the reproduction of
exclusionary rhetoric leveled against social “others” in far-right contexts across the globe. While scholars have examined the
ideologies underpinning exclusionary discourses, few have analyzed the discursive mechanisms through which such ideologies and
“othered” social types become meaningful to ordinary citizens. In this article, we extend this conversation by analyzing digital
discourses on Facebook and YouTube that pertain to Philippine “drug users” and racialized remarks against migrants in Italy
through a chronotopic lens. We demonstrate that despite the historical, economic, and social differences,
far-right ideologies are ordered through chronotopes of national crisis in both cases. Through these chronotopic
worlds, despicable, “othered” social types such as “extracomunitari” in Italy and drug users in the Philippines,
acquire coherence.
Instrumentation of NCAM developed coffee roasting machine
Authors: Ogunjirin O A , Olayinka M , Farounbi A J , Oyedokun J A , Ola O A 
Published: March 2020

Abstract
The increase in demand of coffee in the world as well as high cost of imported coffee roasting machines has made many local fabricators to develop coffee roaster. Unfortunately, the roasted coffee from the machines is not too different from the locally roasted coffee in terms of qualities revealed during sensory and organoleptic tests. This paper presents the development of coffee roaster operational sequence which has a temperature controller, stirring and cooling mechanism embedded into it, which mitigate the effect of poor and irregular heating pattern of most traditional roasting methods. Optimum Coffee roasting temperature is 200°C. However, the roaster can attain a temperature of 400°C.The evaluation of the coffee roaster revealed that the machine attained a steady temperature of 200°C, 250°C and 300°C at 6, 7 and 10 minutes respectively. It was observed that uniform and even roasting was achieved by proper stirring of the coffee bean inside the roaster at the desired temperature which reduced the drudgery, operators’ interference and contamination of the roasted coffee.
Development of indigenous yam pounding machine for home use
Authors: Olaleye S A , Arisoyin A G , Omoniyi O , Elemide O A , Okunola A A 
Published: March 2020

Abstract
Pounded yam is a local delicacy rated as special food in Nigeria. It is always prepared using a local means – mortar and pestle. Due to development in technological advancement, the mechanical preparation of pounded yam at home using simple machine is imperative. Several efforts made on home-made devices for this purpose need more research and technology. This paper discussed an indigenous yam pounding machine developed by the Department of Agricultural and Bio-Environmental Engineering, Federal College of Agriculture Akure, Nigeria. It operated with principle of horizontal rotational milling of the yam by beater attached to the pounding chamber. The beater of mass 0.157 kg supplied force of 155 N at 1500 rpm, required for optimum pounding of the fed cooked yam. The maximum load of yam per batch of pounding is 11.9 kg. The machine has power rating of 1 hp while its capacity is 1.07 tons/hr. The testing of the machine revealed it as best operated at 1500 rpm to achieve pounding efficiency of 97%. This makes the machine a good home appliance for safe and effective pounded yam making.
Evaluation of airflow movement within a broiler shed with roof ventilation system during summer
Authors: Jongbo A O , Moorcroft I , White D , Norton T , Okunola A A 
Published: March 2020

Abstract
Indoor conditions of broiler sheds are influenced by environmental parameters such as temperature, relative humidity and air movement. Air temperature and relative humidity contribute mainly to the heat stress in broilers and are controlled by air velocity. Roof ventilated broiler sheds are designed to mechanically force air into a confined space through a negative pressure. They have bottom-hinged inlets and roof fans. In summer, the air inlets of the broiler sheds are usually opened fully, in addition to the mechanical fans in 100% operation to ensure broiler chickens are properly ventilated to prevent heat stress. Surprisingly, no information on the practice of farmers during summer in roof ventilated broiler shed is available. Hence, this work was carried out to assess air movement within a roof ventilated broiler shed during summer. The results of this work indicated that opening the inlets fully during summer may not improve the air movement at the animal microclimate. The average air velocities at the animal microclimate were found to be between 0.30 and 0.40 m s−1 in an empty broiler shed compared to the occupied broiler shed which varied from 0.10 and 0.20 m s−1. Therefore, this work has shown that airflow at the birds’ microclimate inside the broiler shed are mainly influenced by the birds themselves, inlet opening technique and distance from the sidewall.
Effect of different brands of Nigerian cement on the properties of pervious concrete
Authors: Gana A J , Atoyebi O D , Ichagba R B 
Published: March 2020

Abstract
Pervious concrete can be immensely used in the construction of farm structures for irrigation purposes in agriculture. This study evaluated the effects of different brands of Nigerian cement on the properties of pervious concrete. Four different brands of Portland cement; Dangote Falcon(grade 32.5), Elephant Supaset (grade 42.5), Elephant Lafarge (grade 32.5) and Dangote 3*(grade 42.5) were used to produce pervious concrete of mix ratio 1:4 and tests such as compressive strength, permeability and density were tested, the void content was also analyzed. The densities of pervious concrete produced were between 2000 kg/m3
– 1948 kg/m3
, with Elephant Supaset being the densest. All brands produced PC of compressive strength higher than 6 N/mm2
which is the minimum strength requirement in BS 5224 Dangote Falcon cement had the highest compressive strength followed by Elephant Supaset, Elephant Lafarge and Dangote 3* in that order after a 21 day curing period with values 16.39 N/mm2
, 13.97 N/mm2
, 13.54 N/mm2
and 13.11 N/mm2
respectively. Elephant cement PC was most permeable with a 10.1 mm/sec value, followed by Dangote 3* with 9.98 mm/sec then Dangote and Elephant S had 9.89 and 8.46 mm/sec respectively. Density is inversely proportional to porosity and permeability. Elephant Lafarge cement had the highest void content with 20.43% followed by 20.13%, 19.52%, 18.31% respectively for Dangote 3*, Dangote Falcon, Elephant Supaset.
Land snail from limestone karst in Java: an update with notes on their distribution
Authors: Mujiono N , Priawandiputra W 
Published: March 2020

AbstractLimestone karst in Java is rich of land snail fauna. Unfortunately, the ecosystem is now threatened by mining or tourism activities. However, the impact of that activities on land snail diversity is not well studied. The objective of this study was to inventory the diversity of land snail in limestone karst with focus on their ecological and distribution in Java. Purposive sampling methods using plots (10 x 10 m) were used in 12 different stations in Western Java, Central Java, and Yogyakarta during 2017-2018. Thirty-five species from eleven families of land snail were identified. The highest species richness and population of land snails were found in Watu Blencong (16 species and 158 individuals).Landouria rotatoriadistributed in eight locations, whileJaponia ciliocinctum(85 individuals) distributed in six locations. Results showed that extended distribution records of ten land snail species were reported. Currently, 63 species of land snails species have been identified in karst ecosystem in Java.
Morphometric characteristics and heavy metal bioaccumulation in edible freshwater gastropod (Filopaludina javanica)
Authors: Priawandiputra W , Huda M I N , Kardinan A K , Prawasti T S 
Published: March 2020

Abstract
An edible gastropod, Filopaludina javanica, is widely distributed in freshwater habitats. It was the most abundant gastropod species with variation on size at some lakes in Bogor. However, the relation between morphological size and heavy metal concentration in F. javanica is barely understood although gastropods are well known to accumulate heavy metal. The aim of the research is to measure the impact of concentration of lead (Pb) and cadmium (Cd) concentration to the morphological size of F. javanica in Situ Gede, Bogor. Sampling of the species was carried out in February and April 2017 in Situ Gede (SG), Situ Panjang (SP), Situ Burung (SB) and Situ LSI (SL) while samples for heavy metal accumulation analysis were collected in January and February 2018 in SG. The morphological characteristics of the samples’ shell were measured. Body mass samples were powdered and analyzed using Atomic Absorption Spectrophotometry (AAS). The average range of length and wide shells (mm) were 8.89-30.25 and 7.40-24.80, respectively. The average concentration of Pb and Cd were 0.82 and 0.11 ppm, respectively. The morphometric variability of the species varied among lakes while the concentration of Pb and Cd in this study was generally lower than the acceptable limit.
Exploration of Parmotrema tinctorum and Leptogium sp. lichens as bioindicator of air quality in Mekarsari fruit park
Authors: Safitri R R , Sudirman L I , Koesmaryono Y 
Published: March 2020

AbstractLichens are often used as bioindicator to monitor air quality. This study aims to use the Mekarsari Fruit Park area as a model to analyse the population ofParmotrema tinctorumandLeptogium, and considering the possibility of using them as bioindicator of air quality. The method used is descriptive exploratory with survey techniques. The observation plots were consisted of 3 zones, each of 1000 trees. The samples of each plot were identified morphologically and chemically and then the lead contents were determined usingAtomic Absorption Spectrophotometry. Parmotrema tinctorumwere found in all zones butLeptogiumonly found in zone 3. Lead contents ofP. tinctorumthalli in each zone of 1, 2, and 3 were 13.34, 24.87, and 23.61 ppm with the number of total thalli were 8, 223, and 469, the thalli area of 3369. 91 cm2, 39259.48 cm2, and 98984.97 cm2and the average thallus area (ATA) of 1.3, 13.8, and 17.2 cm2.P. tinctorumtends to be tolerant lichen, because the lead content increasing of 43-46% caused increasing of 96-98% thalli number, 91-97% of thalli area, and 91-92% of ATA. AlthoughLeptogiumspp. are known as sensitive lichens, it occurred in higher lead concentration zone.
Newly distribution record of four marine crabs (Decapoda: Brachyura) collected from Seribu Island-Jakarta, Indonesia
Authors: Hanim N , Aditya I , Rini M , Farajallah A , Wardiatno Y 
Published: March 2020

Abstract
Brachyuran is an important biotic component in marine ecosystems, and is known as a keystone species. Information about brachyuran species in Indonesia, in this case from Seribu Islands-Jakarta, is still limited, especially for the non-economic crabs. Based on the manual sampling, it was found that there are four crabs that have not been reported from the Islands, i.e. Ozius guttatus, Carpilius maculatus, Gelasimus hesperiae, and Etisus laevimanus. In term of ecological point of view, the Islands are influenced by the Jakarta Bay as food provider for supporting the live of brachyuran crab. Crab database is necessary to increase the utilization of crabs in the future, e.g. as antibacterial activity and the sources of chitin and chitosan.
How will oil palm expansion affect to butterflies diversity in Jambi, Indonesia?
Authors: Panjaitan R , Buchori D , Peggie D , Harahap I S , Drescher J , Scheu S , Hidayat P 
Published: March 2020

Abstract
The convertion of forest functions to oil palm plantations has an impact on biodiversity. One of the impacts of biodiversity may affect the butterflies diversity. This research was conducted in one of the oil palm areas in PT. Humusindo in Jambi. The purpose of this study were to determine the diversity and active time of butterflies in oil palm plantations of PT. Humusindo Jambi. The study was conducted for 2 months. Sampling method used for this research were scan sampling in the oil palm plantation area by capturing using insect nets. Butterflies are captured using insect nets then counted, marked (to avoid repeated calculations) and released again. Observation separated per one hour starting at 08.00 am to 04.59 pm. The results showed the highest diversity index of butterflies found was at 13.00-13.59 (H’=2.39) with total species number was 34 species. Overall, the butterfly diversity index found was relatively low (H’=1.78) with total species number was 54 species. The most dominant butterfly species found at each time of observation was Yptima praenubila. The conservation status of all species found were common species (there is no endemic species) and least concern in the conservation status.
Isolation and identification of lactic acid bacteria in hive of Apis dorsata from semi-arid tropical climate in Benu village, East Nusa Tenggara
Authors: Karyawati A T , Nuraida L , Lestari Y , Meryandini A 
Published: March 2020

Abstract

Lactic Acid Bacteria (LAB) have been isolated from the hive of Giant Honey Bee (Apis dorsata) origin from tropical climate. Information about the diversity of LAB from the hive of A. dorsata from Benu Village has not been found yet. The information is important as a preliminary study of the potential of biological resources for food functional development in the future. Therefore, it is needed to research on diversity of LAB that isolated from the hive of A. dorsata from the village of Benu as an area of semi-arid tropical climate. The purpose of this study is determine the diversity of LAB isolated from the hive of A. dorsata from Benu Village. This research is important because it provides preliminary information about the diversity of LAB species from the hive of A. dorsata from Benu Village as a representation of semi-arid tropical climate. Profile of Denaturing Gradient Gel Electrophoresis showed the presence of seven LAB isolates from the hive of A. dorsata in Benu Village. This is an early indication that hive of A. dorsata from semi-arid tropic climate has the potential as a biological resources of LAB that important for food funtional development in the future.
Seed exploration and conservation in Ciremai Mountain National Park and Kerinci Seblat National Park
Authors: Wanda I F , Oksari A A , Sahromi  , Mimin  , latifah D 
Published: March 2020

Abstract
Seed storage at a seed bank facility is one of the ex-situ bioresources conservation strategies in the world’s Botanical Gardens. Enrichment of species for seed banks is done through exploration in various forest areas. The exploration and conservation of seeds have been done in Ciremai Mountain National Park (CMNP) on November 7-16th, 2016 and Kerinci Seblat National Park (KSNP) on April 11-20th, 2017. This research aims to search and collect plant seeds and to know the diversity of species from fruiting plants and seeds. Furthermore, this exploration also aims to study a biological seed that support conservation efforts for these plants. Research used an exploratory method at each location. The recording of ecological data includes habitat, altitude, soil pH, soil moisture, and air temperature. This study obtained thirty-two (32) collection numbers in the CMNP area consisted of 20 families and 28 genera; and thirty-three (33) collection numbers consisted of 21 families and 31 genera in the KSNP area. Most of the seeds found are orthodox seeds that can be stored for a relatively long time.
Biological synthesis and characterization of silver nanoparticles synthesized from Pometia pinnata and Diospyros discolor Fruits
Authors: Handayani W , Nolia I , Sundari R M , Imawan C 
Published: March 2020

Abstract
The use of biological agents for nanoparticle biosynthesis is an alternative to the eco-friendly green synthetic method. In this study, fruit extracts from Pometia pinnata (Matoa) and Diospyros discolor (Bisbul) were used as reducing agents to produce silver nanoparticles (AgNPs). The ratio of silver precursors to water extracts from the fruit and the reaction time was observed to determine optimum reaction conditions. The characterizations were carried out using a UV-Vis spectrophotometer, Transmission Electron Microscope (TEM), and Particle Size Analyzer (PSA) to analyze the size and morphology of the AgNPs. With the increase in the volume ratio of extracts and silver nitrate, the absorption peak intensity tended to increase—these results were shown by the color of the colloid. Based on the comparison of these two extracts, the peak absorbance of the synthesis using D. discolor fruit extract was higher than P. pinnata. The result showed D. discolor fruit extracts had faster reaction times for AgNPs synthesis. The average size of silver nanoparticles from D. discolor was 32 nm and from P. pinnata was 51 nm. The use of D. discolor fruit extract tends to produce smaller AgNPs. This method can be developed for further application for antimicrobial nanoparticles and sensors.
The characteristic of stingless bee’s products (Tetragonula spp.) in Lombok Island
Authors: Wahyuni N , Anggadhania L 
Published: March 2020

Abstract
Beekeeping is one of the excellent businesses for people around the forest. To date, the bee species that began to broaden are stingless bees. Tetragonula spp. is a stingless bee species in Lombok that have been promoted. This research aim is to determine the characteristic of stingless beekeeping products in Lombok. The meliponiculture products of Tetragonula spp. consist of honey, beebread, and propolis. SNI 3545 was used to examine the honey characteristic of Tetragonula spp., the proximate analysis was performed for beebread products and phytochemical analysis was used to stingless bee propolis products. The results showed that stingless bee honey has a value that fulfills 65% standard, the diastase enzyme was <3 DN and acidity was < 200 ml NaOH/kg. The average content of moisture, ash, protein, fat, and carbohydrates from bee bread were 24, 2, 15, 9.5, and 49% respectively. The phytochemical analysis results of propolis determined that all samples contain flavonoids, tannins, saponins. Several of them positively steroid detected. This study results could be used to considerate further research related in manufactured final products of stingless bee products as raw materials.
Growth and yield of five Indonesian new superior varieties of soybean in dry climate rainfed rice fields
Authors: Aisah A R , Herawati N , Hidayah B N 
Published: March 2020

Abstract
Indonesian new superior varieties of soybean are continually released as an effort to increase soybean productivity. Some new superior varieties such as Devon 1, Dena 1, and Dega 1 were not widely known by the stakeholders. This research aims were to investigated the growth and yield of five Indonesian new superior varieties of soybean in the dry climate rice field. The experiment was conducted from March to July 2018 in Segala Anyar Village of Central Lombok Regency, West Nusa Tenggara Province, Indonesia. The experimental design was used non-factorial randomized block design with the soybean varieties as treatments (Devon 1, Dena 1, Anjasmoro, Argomulyo, and Dega 1). Each treatment was repeated four times. The parameters observed included plant height, number of branches, number of leaves, number of sections, number of pods, and soybean production. Data were collected from 10 crop samples for each replication during vegetative phase 1 and 2. The results showed that the soybean varieties had a significant effect on plant height, number of branches, number of sections and production. The crop could not produce optimally during field experiment due to lack of water in the pod-filling phase. Generally, it could grow well and has ability to produce yield.
Oxygen consumption of barred loach Nemacheilus fasciatus (Valenciennes, 1846) on different temperatures
Authors: Prakoso V A , Kurniawan  
Published: March 2020

Abstract
This study aims to investigate the effects of temperature regimes on oxygen consumption of barred loach Nemacheilus fasciatus. Three experimental groups were set to measure oxygen consumption (OC) of the rearing fish (Length: 6.14 ± 0.4 cm; Weight: 1.46 ± 0.05 g) on different temperatures (21.5, 26.5, and 31.5°C) with six replicates. Fish were adapted in an aquarium before stocked and observed in a closed respirometer system (Stocking density: 10 fish/L; Respirometer volume: 1.4 L). Barred loach consumed 365.9, 320.9, and 298.4 mg O2/kg/h at 21.5, 26.5, and 31.5°C indicating that the OC decreased gradually with increasing water temperature. However, oxygen consumption of barred loach did not change significantly within the temperature range from 21.5 to 31.5°C. The ventilation rate of barred loach increased from 115.0 ± 8.9 to 265.2 ± 42.5 times/min between 21.5 and 31.5°C. Oxygen consumption per breath of barred loach was higher at a lower temperature (3.18 ± 0.63, 2.11 ± 1.22, and 1.13 ± 0.57 mg O2/kg/breath at 21.5, 26.5, and 31.5°C) (P<0.05). In terms of Q10, the lowest value was found between 26.5 – 31.5°C with a value of 1.16. The thermal range was a comfort zone for barred loach to maintain their metabolic efficiency.
Immunocapture reverse transcription polymerase chain reaction for detection of sugarcane streak mosaic virus
Authors: Subekti D , Hidayat S H , Damayanti T A , Purwono  
Published: March 2020

Abstract
Detection of plant viruses can be done by protein or nucleic acid approaches. The immunocapture-reverse transcription-polymerase chain reaction (IC-RT-PCR) method is a combination of the two approaches. Research was carried out to develop and validate IC-RT- PCR based-detection method for SCSMV, which can be applied for the sugarcane seed indexing program to support the national government’s goal for sugar self-sufficiency. Evaluation of the IC-RT-PCR method was conducted using 5 field samples. Conventional PCR and serological methods, i.e. dot immunobinding assay (DIBA) and enzyme-linked immunosorbent assay (ELISA) was also performed in the same time. All field samples gave a positive reaction to SCSMV antibodies in the DIBA and ELISA methods with the intensity of the reaction varying from low to high. SCSMV was still detected on plant extract up to 104 dilution by ELISA and DIBA. Specific DNA fragments were successfully amplified from 2 field samples using the conventional PCR method; whereas the IC-RT-PCR method was successfully amplified all field samples. Optimization test showed that the IC-RT-PCR method was able to detect SCSMV from plant extract up to 10−10 dilutions. IC-RT-PCR method is more sensitive than conventional PCR and might be recommended for the indexing method to produce high-quality virus-free sugarcane seed.