bluuebunny/crossref_metadata_2025_split huggingface dataset:
An ensemble learning method based on ordinal regression for COVID-19 diagnosis from chest CT
Authors: Guo Xiaodong , Lei Yiming , He Peng , Zeng Wenbing , Yang Ran , Ma Yinjin , Feng Peng , Lyu Qing , Wang Ge , Shan Hongming 
Published: October 2021

Abstract
Coronavirus disease 2019 (COVID-19) has brought huge losses to the world, and it remains a great threat to public health. X-ray computed tomography (CT) plays a central role in the management of COVID-19. Traditional diagnosis with pulmonary CT images is time-consuming and error-prone, which could not meet the need for precise and rapid COVID-19 screening. Nowadays, deep learning (DL) has been successfully applied to CT image analysis, which assists radiologists in workflow scheduling and treatment planning for patients with COVID-19. Traditional methods use cross-entropy as the loss function with a Softmax classifier following a fully-connected layer. Most DL-based classification methods target intraclass relationships in a certain class (early, progressive, severe, or dissipative phases), ignoring the natural order of different phases of the disease progression, i.e., from an early stage and progress to a late stage. To learn both intraclass and interclass relationships among different stages and improve the accuracy of classification, this paper proposes an ensemble learning method based on ordinal regression, which leverages the ordinal information on COVID-19 phases. The proposed method uses multi-binary, neuron stick-breaking (NSB), and soft labels (SL) techniques, and ensembles the ordinal outputs through a median selection. To evaluate our method, we collected 172 confirmed cases. In a 2-fold cross-validation experiment, the accuracy is increased by 22% compared with traditional methods when we use modified ResNet-18 as the backbone. And precision, recall, and F1-score are also improved. The experimental results show that our proposed method achieves a better classification performance than the traditional methods, which helps establish guidelines for the classification of COVID-19 chest CT images.
Nonlinear MHD simulation of core plasma collapse events in Wendelstein 7-X
Authors: Suzuki Yasuhiro , Futatani Shimpei , Geiger Joachim 
Published: October 2021

Abstract
Three-dimensional nonlinear MHD simulations study the core collapse events observed in a stellarator experiment, Wendelstein 7-X. In the low magnetic shear configuration like the Wendelstein 7-X, the rotational transform profile is very sensitive to the toroidal current density. The 3D equilibrium with localized toroidal current density is studied. If the toroidal current density follows locally in the middle of the minor radius, the rotational transform is also changed locally. Sometimes, the magnetic topology changes due to appearing the magnetic island. A full three-dimensional nonlinear MHD code studies the nonlinear behaviors of the MHD instability. It was found that the following sequence. At first, the high-n ballooning-type mode structure appears in the plasma core, and then the mode linearly grows. The high-n ballooning modes nonlinearly couple and saturate. The mode structure changes to the low-n mode. The magnetic field structure becomes strongly stochastic into the plasma core due to the nonlinear coupling in that phase. Finally, the plasma pressure diffuses along the stochastic field lines, and then the core plasma pressure drops. This is a crucial result to interpret the core collapse event by strong nonlinear coupling.
Forced convection heat transfer from a plate stack embedded in a homogeneous porous medium
Authors: Tul Kubra Khadija , McKibbin Robert , Ullah Sana , Khalid Muhammad , Sweatman Winston L 
Published: October 2021

Abstract
The current paper examines some novel and interesting aspects of the mathematical modelling of fluid flow and forced convection heat transfer from a plate stack embedded in a homogeneous porous media. Time-dependent forced convection heat transfer from some cylinders embedded in groundwater are explored numerically using finite difference methods. An algorithm was developed about rectangular heated solid objects with the same size placed in an in-line arrangement in homogeneous porous media. Central and one-sided finite difference formulae are used to discretize the domain. Applying the mathematical model, continuity, momentum, and energy equations are solved by the finite difference methods. Generally, analytical solutions are not possible for such problems, so most of the work is done numerically. The numerical results for the two-dimensional velocity potential and stream function have been calculated and the resulting fluid and temperature contours are represented graphically for various values of the parameters involved (e.g. length of the entrance, the fluid flow rates, coefficient of thermal diffusion and advection in the observed long-time plume behaviour, effect of time and temperature on heat transfer, etc.). It is observed that fluid and heat fluxes and fluid velocity depend upon the size, shape, burial depth, position of heated objects, and positions of the entrance and exit of the homogeneous porous media. Moreover, the hydraulic conductivity of the porous medium affects the pressure drops, fluid velocity as well as the heat transfer rates.
Modernization of the hardware and software complex of the national standards service in the area of pressure measurement technology for the calibration of vacuum gauges and development of a calibration simulator
Authors: Kuvandykov R E , Chernyshenko A A 
Published: October 2021

Abstract
The article provides information about the functions and the algorithm of modernization of the software and hardware complex for automating the calibration process of vacuum gauges, offers software as a simulator for learning the procedure for calibrating vacuum gauges and effective training of testers. It is shown that in the department for national standards in the field of pressure measurement of D. I. Mendeleyev Institute for Metrology VNIIM. The modernization makes it possible to reduce the work intensity of the test procedure, to reduce the influence of the "human factor", to increase the work productivity of the inspector and to reduce the training time for inspectors in the field of vacuum measurements.
Thin film coatings material particles creation by pulsed methods in vacuum
Authors: Panfilov Y V , Kolesnik L L , Gurov A V 
Published: October 2021

Abstract
Thin film materials particles creation pulsed methods such as magnetron sputtering HiPIMS, pulsed laser deposition PLD, vacuum arc pulsed discharge, high-intensity pulsed ion beam impact HIPIB, as well, were described. It was shown that the stream of material, created by means of an explosion action such as ablation, avalanche paired impacts and microsecond electrical disruption as well creates preconditions for nanocrystalline thin film coating manufacture.
Estimation rumen degradable protein of local feeds in dairy cattle using in sacco method
Authors: Rosmalia A , Permana I G , Despal  , Zahera R 
Published: October 2021

Abstract
There is a lack of nutrition information on local feeds protein in Indonesia, especially to determine protein fraction of dairy feed. The objective of this study was to determine rumen degradable protein (RDP) of local feeds in dairy cattle using in sacco method. The local feeds are copra meal, palm kernel meal, coffee husk, tofu waste, soy-sauce waste, brewer waste, and habbatussauda waste. Two ruminal fistulated male Frisian Holstein were used to determine rumen degradable protein using in sacco method. The parameters observed include the estimated kinetic parameters, effective degradability (ED), and RDP. The parameters were evaluated with analysis of variance using SAS University software. The result showed that tofu waste and habbatussauda waste had high potential rapid degradation of CP following by brewer waste, palm kernel waste, soy-sauce waste, copra meal, and coffee husk. Habbatussauda waste had higher RDP followed by brewer waste, tofu waste, copra meal, palm kernel meal, soy-sauce waste, and coffee husk. There was a positive correlation between RDP and crude protein content, and a negative correlation between RDP and crude fiber. It is concluded that local feeds have various characteristics of quality feed protein, which is shown by rumen degradable protein and rumen undegradable protein.
The evaluation of protease enzyme effectivenes in broiler chicken diet containing jack bean seed (Canavalia ensiformis) with different protein level toward internal organ size
Authors: Mahardhika B P , Ridla M , Mutia R , Adli D N 
Published: October 2021

Abstract
This study was conducted with the intention of evaluating the use of the protease enzyme in broiler feed containing jack bean seed (Canavalia ensiformis) with the different levels of protein towards the internal organs of broiler chicken starter. Bird samples used were 24 broilers of the male lohmann strain taken from 120 chickens. The study design used was a factorial completely randomized design (FCRD) with 2 factors treatment and 3 replications (each replication used 2 samples of bird). The first factor was the level of protein (CP 22% and CP 19.5%) and the second factor was the use of enzymes (non-protease and protease). Data were analyzed by using analysis of variance (ANOVA). The result showed that the use of low protein levels in broiler feed containing jack bean seed significantly (P <0.05) increased the percentage of pancreatic weights but could be improved by the use of protease enzymes. Levels of protein treatment did not significantly affect the percentage of heart, liver and bile weights. The use of protease enzymes significantly (P <0.05) decreased the percentage of pancreatic and bile weights but did not significantly affect the percentage of liver and heart weights.
Introduction to a systematic review and meta-analyses in Indonesia nutrition poultry: case study in probiotic
Authors: Adli D N , Sjofjan O , Jayanegara A , Mahardika B P 
Published: October 2021

Abstract
The review conducted to Introduction to a systematic review and meta-analysis in Indonesia nutrition poultry: case study in feed additive. A review on the table showed the origin phase research and introduction in Indonesia (representatives for animal sciences) both meta-analyses and probiotic. The result showed first generation origin of probiotic started on Indonesia the oldest one were from Aspergillus sp and Bacillus sp with meta-analysis started with small ruminant. Meta-analyses origin with author from Indonesia on animal science were started with title Influence of dietary tannin levels on methane production from ruminant livestock: a meta-analysis (Anuraga Jayanegara, 2010). To sum up, the idea help to increase in industry revolution 4.0 were adaptable and applicator.
Mycorrhizal fungi Glomus spp. propagation in zeolite enriched with mycorrhiza helper bacteria for controlling nematode in coffee
Authors: Asyiah I N , Hindersah R , Harni R , Fitriatin B N , Anggraeni W 
Published: October 2021

Abstract
Arbuscular mycorrhizal fungi (AMF) play a role in suppressing the nematode Pratylenchus coffeae. Mycorrhizal helper bacteria (MHB) can increase the effectiveness of AMF to control the diseases. The experimental purpose was to increase the spore population of AMF Glomus spp. in zeolite-based formulation inoculated with liquid consortia of Pseudomonas diminuta and Bacillus subtilis as MHB. The experimental design was a completely random design with six treatments consisted of 106, 107, 108, and 109 CFU/mL MHB liquid inoculants. The control treatments were water and 2% molasses. All treatments were replicated four times. A total of 300 mL/pot Liquid inoculant of MHB have been inoculated a three day before transplanting the maize seedling to the Zeolite inoculated with Glomus spp. in the pot. One month after MHB inoculation, Glomus formulation in Zeolite with different levels of MHB increased the degree of infection. Three months after MHB inoculation, spore content in Zeolite increased. The density of P. diminuta and B. subtilis in zeolite-based mycorrhizal inoculant increased at the end of the experiment. Liquid inoculant MHB contained 108 CFU/mL enhanced spora number fourth times compared to the control. This experiment suggests that P. diminuta and B. subtilis were effective to increase the spore density of AMF inoculant.
Activity test of Bacillus Spp against bacterial wilt (R. solanacearum) on tomatoes by in vitro
Authors: Tuhumury G N C , Hasinu J V , Kesaulya H 
Published: October 2021

Abstract

Ralstonia solanocearum is a pathogenic bacteria that attacks tomatoes and causes wilt disease. Many efforts have been made to control this disease through cultivation, use of chemical pesticides, and development of resistant varieties, but bacterial wilt disease remains a serious problem economically. Nowadays, many biological controls are being developed using microbes. The use of Bacillus spp as an unfriendly microbe is very potential to control because it has pathogenic inhibitory activity. This study aims to obtain bacterial isolates of Bacillus spp which can suppress the development of bacterial wilt disease in tomato plants. The research was conducted in vitro at the Laboratory of Plant Physiology in the Agriculture Faculty, Unpatti. The results showed that Bacillus niabensis strain PT-32-1 and Bacillus subtilis strain SW116b could inhibit Ralstonia solanacearum, wilt disease in tomato plants in vitro.
Edible insects: Alternative protein for sustainable food and nutritional security
Authors: Tuhumury H C D 
Published: October 2021

AbstractAny food systems applied has to ensure that the food is secure for the people. Nutritional needs are considered integral to the food security concept and sustainability is also important. One of the nutritional needs in food is protein. Proteins mostly obtained from animal-based sources such as meat and fish, plant-based proteins, particularly legumes. However, the production of meat, more importantly ruminant meat is more and more argued for some issues including environment, food safety, and animal welfare. In order to ensure sustainable protein production, the dietary change would be to use alternative protein sources such as insects. In general, insects have high protein content and excellent production efficiency compared with other conventional protein food groups. It is necessarily important to develop the use of insects in various forms, including pastes or powders, concentrates or isolates which can be used further as ingredients or fortified agents in new food product formulations. This paper therefore explores the feature of edible insects as sustainable and viable food source that can contribute to food security including, types of edible insects as food and their nutritional compositions; and processing of edible insects. In conclusion, insects can contribute to sustainable food and nutritional security and be a part of the solution to protein shortages. Insect protein concentrates could potentially be an alternative protein source in food formulation.
Farmers empowerment level analysis in farming during the Covid-19 pandemic and its impact on farm income
Authors: Damanik I P N , Tahitu M E , Turukay M , Adam F P 
Published: October 2021

Abstract
This study aims to analyze the level of farmer empowerment in carrying out farming activities as the main livelihood and its impact on farm income during the Covid-19 pandemic. The research was conducted online by distributing questionnaires in the form of google form in various affordable areas. There were 113 responses obtained by returning the google form on time. The three regions that sent the most responses were farmers in Ambon City, West Seram Regency, and Central Maluku Regency. After analyzing using qualitative descriptive analysis, the results showed that the level of farmer empowerment during the Covid-19 pandemic decreased, especially in terms of marketing of crop products for fruit and vegetable commodities, while for food commodities such as rice tended to be stable. This has an impact on farm productivity and income. The main factor causing a decrease in the level of farmer empowerment is the decreasing purchasing power of the community during the Covid pandemic19; Accessibility of farmers to markets is difficult, there are even times when farmers cannot go to the market due to large-scale social restrictions, the frequency of presence of collectors is reduced, access to plant production facilities is hampered unlike before the Covid pandemic19. This condition requires serious attention from the government so that farmers do not experience difficulties in marketing agricultural products and can maintain the stability of farm income. The solution at the farmer level is to form farmer groups so that the marketing of farm products and the fulfillment of plant production facilities can be done through farmer groups.
Response of soybean (Glycine max L.) that was applied by various liquid organic fertilizer in climate change at acid soil
Authors: Jamilah  , Rapialdi  , Ernita M 
Published: October 2021

Abstract
Acidic soils are formed from rapid climate change. Acid soils have problems in it, among others; high levels of Al, Fe, and Mn and the unavailability of elements P and N for staple crops. Indonesia imports almost 70% of its domestic requirement. The purpose of this study was to determine the response of soybean plants that were given various types of liquid organic fertilizer (LOF) to climate change in acid soils. Experiments have been carried out in acid soil in the Kuranji area of Padang City. Materials needed include; Mutiara-1 seed. The lime and LOF trials were arranged in a completely randomized design (CRD), with 9 treatments namely; without calcification and without LOF (A); give lime equivalent to 1 x Exchangeable Al and without LOF (Control) (B); Crocober (C); Crocoberma (D); Crocoberderma (E); Titocroco (F); Titocrocoma (G); (H); Trichoderma harzianum (I). The observational data were analyzed statistically by using an F level of 5% significance level if the treatment had a significant effect, it was followed by a LSD test of 5% significance level. Observation parameters include; agronomic, pH soil. Experimental results established that given of dolomite lime can increase soil pH, Titocrocoma LOF accompanied by liming gives the best effect on soybean varieties Mutiara-1 at vegetative stadium, produces 3.45 Mg ha−1 forage dry weight equivalent to107,64 kg N ha−1 or 618,93 kg ha−1 crude protein.
The effect of organic fertilizers on growth several varieties of soybeans
Authors: Rizwan M , Dalimunthe M , Pasaribu I A , Satriawan H 
Published: October 2021

Abstract
This study aims to analyse the effect of three types of organic fertilizers on the vegetative growth several varieties of soybeans. This study used a factorial randomized block design with two treatment factors, namely organic fertilizers and varieties. The first factor is: organic fertilizer from 3 levels, namely: K1 (1.5 kg of compost), K2 (1.5 kg of goat manure), and K3 (1.5 kg of chicken manure). The second factor is: soybean plant varieties consist of 4 levels, namely: V1 (Dena 1), V2 (Devon 1), V3 (Anjasmoro) and V4 (Derap 1). The parameters observed were plant height, number of branches, number of leaves, amount of chlorophyll, leaf area, and flowering age. The results of our research is organic fertilizers have a significant effect and are able to increase the growth of soybean plants except for leaf area and flowering age. Types of varieties had a significant effect and were able to increase plant height, number of branches, leaf area, and flowering age, but had no significant effect on the parameters of the number of leaves and the amount of chlorophyll. Moreover, there isn't interaction effect between the two treatments for all parameters.
Test for the antibacterial inhibition of kaffir lime leaf (Citrus hysteric D.C) extract against pathogen bacteria in improving food safety
Authors: Nendissa S J , Nendissa D M 
Published: October 2021

Abstract
Kafir lime leaf (Citrus hystrix) is a plant from the citrus tribe that has long been known by community as flavor ingredient. To support its use and increase its application in supporting food safety, a test the inhibition of on kaffir lime leaf extract against pathogenic bacteria, namely Gram Negative Bacteria (Escherichia coli, Salmonella typhimurium) and Gram Positive bacteria (Staphylococcus aereus, P. aeroginosa). Making kaffir lime leaf extract (Citrus hystrix) was done by weighing 150g of lime leaf powder, then immersing in 96% ethanol solution and leaving for + 3 days. Kaffir lime leaf extract was dissolved with sterile distilled aquades to obtain a concentration of 5%, 10% and 15%. The antibacterial activity of kaffir lime leaf extract was tested by diffusion method using disc paper to determine of the bacterial growth inhibition area. The results showed that kaffir lime extract had antibacterial activity inhibition of 12,78 mm of S. aereus, 9 mm of E.coli, 7,12 mm of S. typhimurium and 9,3 mm of P. aeroginosa. Kaffir lime leaf extract has inhibition effectiveness for gram positive bacteria Staphylococcus aereus and gram negative bacteria E. coli, Salmonella typhimurium, P. aeroginosa. Thus, kaffir lime leaf extract can be used as a decontaminant agait theses 4 type of bacteria, especially Staphylococcus aereus which has a strong inhibitory power, so it can maintain quality and increase the safety of mead based foods
Evaluation of effectiveness various seed processing combination technique to produce True Shallot Seed (TSS) with good quality
Authors: Waluyo N , Rahayu A , Rosliani R , Wikan T , Gaswanto R 
Published: October 2021

Abstract
The seed processing technique is essential to maintain quality and suppress seed deterioration rate as long as processing time. This research aims to evaluate various seed processing combination techniques to produce TSS with good quality. The study was conducted at Indonesian Vegetables Research Institute, Lembang (1,250 m sal) from March until December 2018. The research used a Randomized Complete Block Design (RCBD) with three replications. The treatment consisted of 12 combinations of seed processing, including the technique of drying, capsule breaking, and sorting. The research result showed that the best treatment was a combination technique with umbels drying in the room at RH 50 % and 30-35°C for 72 hours, breaking capsule by hand manually, and seed sorting by winnower followed by hand manually. The produced seed quality in this treatment showed the seed germination was 75%, the moisture content was 7.5%, and the physical purity was 99.9%. This research implies that the availability of TSS processing technology can be carried out by massal, but still can produce good seed quality.