bluuebunny/crossref_metadata_2025 huggingface dataset:
Software tool for modelling active vision areas of tomographic systems
Authors: Chaldina E , Movchan A , Kapustin V , Kuryachiy M
Published: April 2021

An algorithm for calculating the shape of the active vision area of active-pulse television measuring system is proposed and implemented in the MATLAB software. Methods for determining the range of such systems, implemented in this software environment, are described. The software environment corresponds to the operation of an active-pulse system with settings for illumination pulses duration from 1 ns to 250 ns and settings for strobe pulses duration from 1 ns to 500 ns, and the maximum observation depth of the vision area is 80 m.
Adaptive segmentation of multiconductor transmission lines in quasi-static analysis by the method of moments
Authors: Maksimov A , Kuksenko S
Published: April 2021

The paper proposes a new algorithm for constructing an adaptive mesh for quasi-static analysis of multiconductor transmission lines by the method of moments. Its versatility in analyzing transmission lines with complex geometry is shown in comparison with well-known algorithms. The algorithm showed high accuracy of calculations, memory savings are at least 1.6 times, and calculation time savings are at least 1.7 times compared to a tight uniform mesh.
Visualization of neural network activity in the human brain based on fractal analysis
Authors: Marusina M Ya , Kalinkina M E
Published: April 2021

Methods for the quantitative assessment of signals based on functional magnetic resonance imaging data when studying the activity of neural networks in the human brain are presented. The algorithm of computational and analytical methods is implemented in the MATLAB environment, fractal analysis methods are selected as methods. Based on the developed algorithm, the FracLab software complex was created, with the help of which the signals received during the recognition of stimuli by 13 subjects were processed.
Sources of methodical errors in the approximation of the amplitude radiation pattern by a double Kotelnikov series in rectangle grid
Authors: Anikin A S , Ochirtarov A V
Published: April 2021

With regard to the amplitude bearing problem, quantitative estimates of methodical error are given when approximating the spatial amplitude chart of an antenna using a double Kotelnikov series. The area of approximation of the amplitude radiation pattern is limited by the main lobe. The methodical error of the approximation of the amplitude radiation is determined provided that the coefficients of the Kotelnikov series are calculated without error. In this approach, the methodical error takes into account two sources of error: the first source of error reflects the influence of finiteness of the series members, and the second source of error is the limited angle sector in the approximation area.
Error in the calibration of the receive paths due to nonlinear distortion of the transmitter at a multi-frequency control signal
Authors: Anikin A S , Ochirtarov A V
Published: April 2021

Errors of amplitude calibration of the receive paths due to nonlinearities of the transmitter by simulation are considered. Calibration shall be carried out using a multi-frequency signal with elongated orthogonal subcarrier corresponding to the reference frequencies. Calibration is performed by evaluating the complex frequency response of the receiving path at control frequencies by dividing the samples of the output signal spectrum of the path by the corresponding samples of the input signal spectrum. To describe the terminal amplifier of a non-inertial transmitter, a polynomial model is used that takes into account the distortion of the amplitudes of the output signals.
Mapping tree diversity in the tropical forest region of Chocó-Colombia
Authors: Fagua J Camilo , Jantz Patrick , Burns Patrick , Massey Richard , Buitrago Jeiner Y , Saatchi Sassan , Hakkenberg Christopher , Goetz Scott J
Published: April 2021

Understanding spatial patterns of diversity in tropical forests is indispensable for their sustainable use and conservation. Recent studies have reported relationships between forest structure andα-diversity. While treeα-diversity is difficult to map via remote sensing, large-scale forest structure models are becoming more common, which would facilitate mapping the relationship between treeα-diversity and forest structure, contributing to our understanding of biogeographic patterns in the tropics. We developed a methodology to map treeα-diversity in tropical forest regions at 50 m spatial resolution usingα-diversity estimates from forest inventories as response variables and forest structural metrics and environmental variables as predictors. To include forest structural metrics in our modelling, we first developed a method to map seven of these metrics integrating discrete light detection and ranging (LiDAR), multispectral, and synthetic aperture radar imagery (SAR). We evaluated this methodology in the Chocó region of Colombia, a tropical forest with high tree diversity and complex forest structure. The relative errors (REs) of the random forest models used to map the seven forest structural variables ranged from low (6%) to moderate (35%). Theα-diversity maps had moderate RE; the maps of Simpson and Shannon diversity indices had the lowest RE (9% and 13%), followed by richness (17%), while Shannon and Simpson effective number of species indices had the highest RE, 27% and 47%, respectively. The highest concentrations of treeα-diversity are located along the Pacific Coast from the centre to the northwest of the Chocó Region and in non-flooded forest along the boundary between the Chocó region and the Andes. Our results reveal strong relationships between canopy structure and treeα-diversity, providing support for ecological theories that link structure to diversity via niche partitioning and environmental conditions. With modification, our methods could be applied to assess treeα-diversity of any tropical forest where treeα-diversity field observations coincident with LiDAR data.
Effects of maternal exposure to fine particulate matter on birth weight in 16 counties across China: a quantile regression analysis
Authors: Wu Kaipu , Hu Huanqing , Ren Zhoupeng , Benmarhnia Tarik , Ren Meng , He Simin , Knibbs Luke D , Meng Xia , Di Jiangli , Huang Cunrui , Wang Qiong
Published: April 2021

The adverse effects of air pollution during pregnancy have been studied intensively, but mainly utilizing linear and logistic models, which generally yield little information about how air pollution may change the distribution of birth weight in populations. We aimed to examine the effects of fine particulate matter (PM2.5) on quantiles of birth weight, and if effects were heterogeneous in different populations and regions. We used a prospective cohort study of 196 283 singleton term live births from 16 counties across China during 2014–2018. PM2.5 exposure for full gestation, each trimester and last gestational month were assessed by Inverse Distance Weighting interpolation. Linear and quantile regression were conducted to estimate associations between PM2.5 exposure and mean birth weight, as well as birth weight distribution, with birthweight z-score as the main outcome. Stratified analyses and Cochran Q tests were conducted by maternal and geographical characteristics. Each 10 µg m−3 increase in average PM2.5 over the entire pregnancy was associated with reduced birthweight z-score (−0.010, 95% CI: −0.015, −0.005) and birth weight (−3.21 g, 95% CI: −5.27, −1.15). In quantile regression, more pronounced effects were observed in lower and intermediate quantiles, with a decrease of 0.021 (95% CI: 0.033, 0.009) and 0.009 (95% CI: 0.015, 0.002) in the 5th and 50th quantiles of birthweight z-score, respectively. Additionally, we observed stronger associations among well-educated, migrant and primiparous mothers as well as in coastal areas. Maternal exposure to PM2.5 was associated with reduction in birth weight, especially for those with very low birth weight. Well-educated, migrant and primiparous mothers, as well as births in coastal areas may be more sensitive to PM2.5 in our study population. The results may be relevant to targeted public health interventions to reduce maternal exposure to air pollution.
The effect of murashige and skoog (MS) modified medium and several types of auxins on the growth of stevia (Stevia rebaudiana bertoni) in vitro
Authors: Asmono S L , Rahmawati  , Sjamsijah N
Published: April 2021

The aims of this research is to testing the use of several types of auxins with the same concentration (0.2 ppm IAA; 0.2 ppm NAA; 0.2 ppm IBA) and modification of MS media (1/4 MS; 1 / 2MS; MS full ). Parameters observed included roots number, roots length, plantlets length and velocity of root emergence. The result shown that roots appeared influenced by the modification of MS media, the fastest root appearance was in the treatment using full MS and 1/2 MS on 14 and 15 DAS (day after showing). The several types of auxin and the modification of MS media were very significant. The number of roots parameter also resulted from the interaction between the auxin type and the modification of MS media which had a very significant effect. At the end of the observation (30 DAS) highest number of roots with an average of 4.23 was found in the using NAA treatment, with 1/2 MS. The modification of MS media is more optimal increasing roots length is at 1/2 MS. The modification of MS media which is more optimal in increasing length of plantlets at full media and was not significantly different with 1/2 MS.
Selection and evaluation of agronomic character of high temperature tolerant mutant gogo rice (Oryza sativa L) in nursery phase
Authors: Rahmawati D , Dewi AK , Endah Prasetya AW
Published: April 2021

Increasing global temperatures due to climate change have a negative impact on crops. The aim of this research is to study the selection and evaluation of agronomic characters between mutant lines and comparison varieties against high temperature stress in the nursery phase. This research was conducted from September to December 2019 in the PAIR-BATAN (Isotope and Radiation Application Center-National Nuclear Technology Agency) greenhouse. This study used a qualitative descriptive method with a high temperature stress score according to the International Rice Testing Program (IRTP). The genetic material used was 64 numbers of the third generation Situgintung mutant lines tested and the comparison varieties were the N22 (high temperature tolerant) and IR52 (high temperature susceptible) variety and the original Situgintung variety. The results showed that of the 64 lines of the third generation of upland rice Situgintung, 15 lines were selected that had high temperature stress tolerance, namely 1 vulnerable line and 14 highly susceptible lines. The recovery score showed that there were 15 lines that were able to regrow after high temperature stress and had no different characters of agronomic diversity. Furthermore, to obtain homogeneous varieties of situgintung, purification and observation of the selected lines can be carried out.
Application of silica nutrients to improves local rice productivity under saline conditions
Authors: Nasrudin N , Rosmala A
Published: April 2021

Silica is beneficial nutrients that affect rice plants to be tolerance to biotic and abiotic stresses, include saline conditions. The aim of this research was to examine the effect of silica nutrients to the productivity of local rice accession PH 1 under saline conditions. The research used a factorial completely randomized design. The first factor is levels of salinity include non-saline, 4 dS m−1, 8 dS m−1, and 12 dS m−1. The second factor is the addition of silica nutrients per kg soil include 300 mg, 450 mg, and 600 mg. Salinity and the addition of silica nutrients were not significantly different to root canopy ratio, plant growth rate, and harvest index. However, the addition of silica nutrients up to 600 mg affects increasing of productivity up to 1.18 tonnes ha−1. There is an interaction between salinity and the addition of silica nutrients to the number of productive tillers, when the plant was given saline conditions 4 dS m−1 to 8 dS m−1, plant needs the addition of silica nutrients as much as 450 mg to 600 mg. While increasing the saline conditions up to 12 dS m−1 plant needs the addition of silica nutrients as much as 300 mg.
Yield and seed quality evaluation of several rice (Oryza sativa L.) lines with ‘Ciherang’ as a comparative variety
Authors: Rahmawati D , Santika P , Gultom APM
Published: April 2021

As the world’s population keeps increasing, the assembly of new high yielding rice variety is one of the solutions in answering food security problem. Research was carried out in July 2019 to February 2020 at Wirowongso village, Jember and Seed Technology Laboratory, Politeknik Negeri Jember. This research used Randomized Block Design with nine treatments of eight rice lines and a comparative variety, with three repetitions each. The treatments were G1 (UDS 001), G2 (UDS 002), G3 (UDS 003), G4 (UDS 004), G5 (UDS 005), G6 (UDS 006), G7 (UDS 007), G8 (UDS 008) and G9 (Ciherang). The data was analysed using ANOVA and LSD at 5%. The results showed that ‘UDS 008’, ‘UDS 001’ and ‘UDS 005’ were superior to ‘Ciherang’ in plant height, panicle length, number of panicle grain, number of productive tillers and number of pithed grain. In terms of production and yield potential per hectare, ‘UDS 001’, ‘UDS 002’, ‘UDS 003’, ‘UDS 004’, ‘UDS 005’, ‘UDS 006’, and ‘UDS 008’ were superior to ‘Ciherang’. ‘UDS 001’ gave the highest production of 10.36 ton/ha, while ‘UDS 005’ had the highest potential of 11.22 ton/ha. For the germination rate, ‘UDS 006’ was the highest by 81.17%.
Study on improvement of red chili pepper (Capsicum annuum L.) cultivation technology
Authors: Handayati W , Baswarsiati  , Handoko  , Sihombing D
Published: April 2021

The excessive use of pesticides is a problem in vegetable production in Indonesia including in hot pepper chili cultivation. According to this condition, an experiment was conducted in Bocek village Karangploso district Malang Regency from May to November 2019. The study was arranged in a randomized block design with four treatments and five replications. The introduced treatment was the improvement of the integrated plant and resources management (IPRM) component technology i.e. seedling immunization with Amaranthus spinosus liquid extract as an inducer and the use of BaPf as a PGPR and biological control that compared to the farmer technology (existing). The result showed that the introduced technology treatment (seedling immunization + BaPf) gave a higher plant posture than the other treatments. The highest fresh fruit weight was obtained in this treatment. This treatment also produced the highest yield of about 0.81 kg plant−1 or 21.48 tonnes ha−1 or the highest 19,84 % than existing. The intensity of yellow virus and anthracnose diseases in the introduced treatment was lower than existing. Farming analyses showed that this treatment (B) resulted in a higher profit of about Rp 18,214,870/1000 m2 with a 1,51 of B/C ratio.
The effect of the use of various kinds of biochar and soil nutrients on pakcoy (brassica rapa l.)
Authors: Sugiyarto  , Salim A , Firgiyanto R
Published: April 2021

Biochar is a medium that is very suitable for soil. Making biochar itself is obtained from agricultural production waste. Utilization of agricultural waste is expected to produce new media that can increase agricultural production. This study aims to see how much influence the various types of biochar and type of biochar enrichment (NPK fertilizer and Plant Growth Promoting Rhizobacteria) on Pakcoy. The method used was factorial completely randomized design (CRD). Where the first factor is various types of biochar, namely from rice husks, coconut shells, oil palm fruit bunches, corn cobs and coffee fruit skins. The second factor is type of biochar enrichment (control, giving NPK and giving PGPR). The results obtained were the effect of biochar and the type of biochar enrichment had a significant effect on the parameter of the number of pakcoy plants. The results obtained were the effect of Biochar and type of biochar enrichment on the parameters of number of leaves to the pakcoy plant.
Value added analysis of cassava “tape” supply chain in Bondowoso regency
Authors: Hermanuadi D , Brilliantina A , Novitasari E K
Published: April 2021

Today, food security has become a very important issue in Indonesia. One of the processing industries that support food security is cassava industry. The purposes of this research are to calculate the added value in the supply chain of cassava tape, and to analyze the service fees obtained by each of the production factors used. Data are used in this study came from the field by means of observation and interviews. The research was carried on in June – August 2020. To describe the supply chain of cassava tape, this research is used descriptive data analysis method. This study also uses quantitative analysis to determine the added value by using the Hayami method. The results of this study are expected to encourage the development of agro-industry based on local commodities, especially based on cassava, to support the food security.
Synchronization of perception of producers and customers in an effort to improve the quality of services and products of Puger shrimp paste
Authors: Ambarkahi R P Y , Gemaputri A A , Pongoh I A A
Published: April 2021

This research was conducted using a qualitative descriptive method, which is to identify the quality of puger shrimp paste products from the producer and customer sides, namely taste, color, texture, food safety and packaging. Identification of service quality, namely identifying the form of services provided by producers, identifying customer responses to the form of services and product quality provided by puger shrimp paste producers, and identifying and analyzing detailed activities that must be carried out in each type of main activity in an effort to support the achievement of improved service quality and puger shrimp paste product. Furthermore, the results of the identification that have been carried out will be used as material to compile a service and product blue print as a discourse to be used as material for a study of the stages of the process of preparing puger shrimp paste products and submission to customers. The targeted outputs of this research are: (1) sustainable puger shrimp paste processing agro-industry business management model; (2) Regional superior food products with quality and in accordance with customer perceptions; (3) suitability of perceptions of puger shrimp paste producers with customer perceptions as a form of synchronization of processes and results.
Analysis up-stream agribusiness and counselling beef cattle development in Jember
Authors: Wahyono N D , Hasanah N , Kusuma S B
Published: April 2021

The study was to analyse the upstream agribusiness subsystem (upstream agribusiness). Data collection methods used were interviews, observation and questionnaires. Data analysis used Capacity Analysis for Ruminant Livestock Population Increase (KPPTR). The results of this study are seen from SDA, Jember Regency is a location that is not suitable for beef cattle business because of its narrow land. Land availability in the provision of feed (Effective KPPTR), has a negative value of 679,727. The human resources of Jember Regency are quite potential for the development of beef cattle business because in general, breeders have the main job as farmers (55%), although their education is still low because the average formal education is SD (38.3%). In addition, the agricultural counselling However, the role of agricultural extension agents has been effective because farmers have joined the IB program. Overall, Jember Regency has the potential as an area for fattening or ready-to-slaughter cattle business because the presence of cattle in the area is only temporary so that it does not interfere with the carrying capacity of the land in providing feed for beef cattle.
Modeling of factors affecting the productivity of sugarcane in Jember Regency
Authors: Harlianingtyas I , Hartatie D
Published: April 2021

Sugar is one of the strategic commodities in the Indonesian economy. The main raw material for making sugar in Indonesia comes from the sugar cane plant. Sugarcane is a seasonal plantation commodity crop, wherein one year there is only one harvest. Sugarcane productivity is largely determined by agro-climate, in addition to the cultivation technique factor. Apart from climatic factors, the area of milled sugarcane is strongly influenced by the price of sugar at the farmer level, especially 1-2 years before production. This study aims to determine the factors that affect the productivity of the sugarcane in Jember Regency which is poured into a mathematical model. The factors that are thought to affect sugar production in Jember Regency are rainfall (X1), number of rainy days(X2), planting area(X3), sugarcane production(X4), humidity (X5), and temperature(X6) from 1990-2020. The method used in solving this problem is a linear regression with detailed analysis to form an optimum mathematical model. The mathematical model obtained isY= -5,192X11,16X20,242X30,141X40,132X514,1X631,9. The results of the analysis are expected to be used as recommendations by the government to determine policies in increasing the productivity of sugarcane in Jember Regency.
Marketing strategy of sumardi farm’s goat milk business in senduro district Lumajang regency
Authors: Wiguna A A , Putra RPCNAW , Widyatami L E
Published: April 2021

Sumardi Farm’s goat milk is business which produce goat milk located in Burno Village, Senduro District, Lumajang Regency, East Java. Goat milk will take directly by partners, namely UD Rumah Susu and more processing milk industry in various cities. This study aims to identification of internal and external factors in Sumardi Farm’s goat milk business. Formulate better alternative marketing strategy suitable to internal and external conditions of Sumardi Farm’s goat milk business. Analysis research method used by SWOT analysis. There are 8 alternative strategies formulated are increasing quality and quantity of products, managing the production process and making SOP, diversifying products, making brands or other forms of legality, holding semi-modern technology, make independent sales with internet marketing, promoting emphasis image and brand and segment the market according to purpose of business..
Competitive and comparative advantages analysis of organic rice farming in Sumberjambe sub-district Jember regency
Authors: Widyatami L E , Wardani D K , Wiguna A A
Published: April 2021

Organic rice agriculture in Jember Regency was first developed in Rowosari Village, Sumberjambe Sub-district in 2012, by “Tani Jaya 2” Farmer Group. The purpose of this research was to analyze the comparative and competitive advantages of organic rice farming in Sumberjambe Sub-District, Jember Regency, as well as the impact of government policies on organic rice farming. A purposive sampling method was carried out during this research and the members of “Tani Jaya 2” Farmer Group, Rowosari Village, Sumberjambe Sub-district, which runs organic rice farming was the sample of it. The analysis method used in this research was PAM (Policy Analysis Matrix). The results show that organic red rice farming in Sumberjambe Sub-district, Jember Regency had a comparative and competitive advantages which indicate by the organic rice farming competitiveness. The results of PAM analysis show that the policy impact on the output of organic rice farming had a positive impact on organic red rice farming, and the impact of tradable input policies had a negative impact on organic red rice farming. It can be concluded that the government policies on tradable input and output, while non-tradable inputs gave a positive impact on organic red rice farming in Sumberjambe Sub-district.
Policy scenario of sustainable local soybean development in banyuwangi regency
Authors: Retnowati N , Iskandar R
Published: April 2021

Banyuwangi Regency is the largest soybean producer in East Java with an average harvest area of 29,149 ha / year in the 2008-2018 period. The fluctuation of soybean production in Banyuwangi Regency, which tends to decline by an average of 6% / year and a decrease in harvested area by an average of 7% / year in the 2008-2018 period, encourages the need for a study of soybean performance. The decline in soybean production and harvested area was caused by several factors, including fluctuations in soybean prices, a very good perception of imported soybeans and trade offs with rice cultivation. To overcome the management of agricultural resources that are increasingly threatening the aspects of sustainability, this research tries to find a solution by finding the leveraging attributes and formulating development policy scenarios as the basis for a sustainable increase in local soybean production and harvest area in Banyuwangi Regency. With the development of policy scenarios, it is hoped that the agricultural sector will remain strong in providing food for the community, especially in the current Covid-19 pandemic conditions. The data analysis technique used is multidimensional analysis followed by Leverage analysis and Monte Carlo analysis. The results showed that the sustainability status of local soybean development in Banyuwangi Regency was 55.10 (the social dimension was quite sustainable), 49.17 (the economic dimension was less sustainable), and 46.90 (the quality dimension was less sustainable). The local soybean development policy scenario includes: changing the food management system. become corporate farming, expand marketing access, and conduct periodic analysis and evaluation.
Evaluation of multidimensional sustainability status of vannamei shrimp hatchery in Situbondo regency
Authors: Pongoh I A A , Dhamayanthi W , Iskandar R
Published: April 2021

Vannamei shrimp (Litopenaeus vannamei) is a high-value commodity in fisheries. The volume of Indonesian vannamei shrimp production increased by 15.06% / year in the 2014-2018 period. This research wants to ensure that these conditions are sustainable in the future. The sustainability of the vannamei shrimp hatchery in this study is viewed from the dimensions of the environment, technology and quality system as well as the recommended policy scenario. The value of the sustainability status of the vannamei shrimp hatchery in terms of three aspects, overall is 57.34 this value is categorized as quite sustainable and the analysis of the effect of the sustainability attributes shows that in general this business can be said to be sustainable with several corrective actions, namely improving the quality of seeds and managing hatchery waste. Policy scenarios that can be offered based on the results of this research include; (1) the environmental dimension, it is to improve hatchery conditions and manage waste to avoid environmental damage;(2) the technological dimension it is to improve shrimp hatchery technology by collaborating with a marine commodity research center; (3) the quality system dimension, is to carry out an adequate production control system and evaluate the production process effectively.
The Factors affecting Pitalah Duck farmer’s income in Rokan Hulu district Riau province
Authors: Basriwijaya K M Z , Sunarti D. , Ekowati T. , Sumekar W.
Published: April 2021

This research was aimed at analyzing factors affecting the income of the Pitalah duck famers in Rokan Hulu District. Respondents in this study were duck famers. Research method used was a survey. Samples of 100 respondents were collected by using proportionate random sampling. The data collected were then analyzed using multiple linear regression analysis. The results of the analysis show that the value of R square is 0.748. From six independent variables, partially, the ownership periods of livestock, the ownership of livestock, the prices of livestock feeders, and the price of livestock products have a significant effect on the income of the duck farmers (P≤0.01). In addition, the price of livestock drugs does not significantly affect the farmers’ income.
Rapid appraisal: a sustainability analysis of dairy cattle agribusiness based on resources accessibility
Authors: Malika U E , Hudori H A
Published: April 2021

Resources are a potential value that plays an important role in a dairy cattle agribusiness, including human resources, natural resources, environmental, social, economic, and so on. However, the accessibility of these resources can change with changing conditions and the development of the era, so that it has an impact on the development of the dairy business. This study aims to determine the sustainability of dairy cattle agribusiness, especially in Jember Regency, East Java based on the accessibility of resources as outlined in several dimensions such as human resources, natural resources, environmental, social, economic, and technology. The analytical method used is the rapid appraisal-rap-dairy farm agribusiness method approach. The results of the multidimensional analysis show that the sustainability status of the dairy cattle agribusiness in Jember Regency is in a fairly sustainable status with a sustainability status index value of 74.03.
Addition of papaya (Carica papaya L.) seed meal on quail production performance
Authors: Rahmasari R , Hertamawati R T , Rafli A K , Nugraha B A
Published: April 2021

This study was determined the effect of adding papaya seed meal on quail performances. A total of 168 75-days-old quail were randomly assigned to four treatments with six replications with seven birds on each replications. The experimental treatments were diet contain 0%, 0.25%, 0.5% and 1% papaya seed meal. The experimental diet were given for four weeks. Parameters were feed intake, total production, henday production, egg weight and feed conversion. The data was analysed by Analysis of Variance (ANOVA). We found that adding papaya seed meal significantly decrease feed intake, total production and henday production (P<0.05). However, adding papaya seed meal was unaffected egg weight and feed conversion.
The hematological profile and immune response treated by heat stress on “Gaok” native chickens
Authors: Pantaya D , Pratama R Y , Marjiatin T A , Ningsih N. , Syaikhullah G.
Published: April 2021

The study was conducted to evaluate the effect of heat stress on hematological profile (hemoglobin, erythrocytes, hematocrit, MCV, MCH, MCHC, leucocyte, granulocyte, lymphocytes, MID) in blood of Native chickens. Total of 32 “Gaok” native chickens (18-week) were redesigned into CRD (completely randomized design) 2x2 factor arrangement. The first factor was the temperature condition in indoor and outdoor pen. The second factor was with and without supplementation Vitamin C. Blood samples were collected on 3 days during treatment. Results indicated that treated with heat stress was showed not significant effect on Hemoglobin, erythrocytes, MCV, MCH, MCHC, leucocyte, lymphocytes, granulocytes. Heat stress pressure had significantly (p<0.05) increase in the water consumption and feed intake. The result provides a new information that Gaok chickens was resistant to heat stress without any effect on immune response and blood cell metabolic.
Herbal anthelmintic: the effectiveness of worm infections control in sheep using urea molasses block containing tobacco (nicotiana tabacum) waste
Authors: Awaludin A , Syahniar T M , Andriani M
Published: April 2021

The purpose of this study was to determine the ideal composition of tobacco waste(Nicotiana tabacum)as a herbal anthelmintic element from local ingredients added to UMB (Urea Molasses Block) and to determine effectiveness for controlling worm infection in sheep. The method used is to make UMB with the addition of tobacco waste. The calculation of EPG (eggs per gram) of worm eggs was used as an evaluation for the degree of infection using Whitlock chamber tools. The degree of infection will be evaluated as the basis for assessing the effectiveness of UMB from tobacco waste in experimental animals. The experimental animals were 10 sheep aged 1 - 2 years (ethical clearance number: 0019/EC-FKH/Eks./2020) infected with worms naturally divided into 4 groups, each group was given UMB containing tobacco waste 0%, 1%, 3%, and 5%. The results of the study concluded that UMB with the addition of 5% of tobacco waste had the potential to control helminthiasis in sheep. Other results of this study also presented a prototype of UMB products containing herbal anthelmintics (tobacco waste) which could be further developed as an alternative solution before being produced as one of the livestock products that have added value.
Identification of helminth parasites diversity on laying chicken in jember district (East Java – Indonesia)
Authors: Kusuma S B , Nusantoro S , Muhamad N , Awaludin A , Hasanah N , Adhyatma M
Published: April 2021

One of several factors that can decrease productivity of laying chicken is health problems caused by worm parasite (helminthiasis). The aim of this research is to identify the diversity of worm parasites in laying chicken in Jember District. Obtained information on worm parasite species can be used as a database for prevention and treatment strategies of helminthiasis in laying chicken in Jember District. One-hundred-and fifty laying chicken excreta samples were randomly collected in the Jember area which was started from July to August 2020. Identification of worm species diversity was carried out by examining worm eggs found in excreta samples using the sedimentation method and the Whitlock method performed at Balai Besar Veteriner (BBVet) Wates. Based on the results of chicken excreta examination in Jember, worm parasite eggs were found from the nematode class consisting of Strongyloides sp.; Heterakis sp., and Ascaridia sp.
Antimicrobial activity of jengkol and petai peel extract to inhibit listeria monocytogenes
Authors: Budiati T , Suryaningsih W , Yudistira H , Azhar S W
Published: April 2021

The aim of the study was to evaluate antimicrobial activity of extract of Jengkol (Pithecellobium lobatum Benth.) and Petai (Parkia spesioca Hassk) peel as natural antimicrobial to inhibit Listeria monocytogenes. By using Minimum Inhibitory Concentration (MIC), the antimicrobial activity of Jengkol peel and Petai peel extract was 0.78 % and 0.39 %, respectively. By using Inhibition zone, the antimicrobial activity of Jengkol peel and petai peel extract was 1,08 ± 0,07 and 3,13 ± 0,13 mm. Phytochemical compounds of jengkol and petai were apigenin, coumaric acid, gallic acid, kaempferol, hesperidin, luteolin, naringenin, quercetin. Myricetin was found on jengkol but it was not found in petai peel extract. Antimicrobial activity of petai peel extract was more effective to inhibit Listeria monocytogenes than jengkol peel extract.
Development of integrated swab chamber for drive thru Covid19 test system
Authors: Destarianto P , Bakri A , Hertamawati R T , Suryana A L
Published: April 2021

WHO currently recommends molecular testing for all patients who are included in the suspect category. The molecular examination requires facilities with biosafety level 2 (BSL-2), meanwhile for culture testing at least BSL-3. Viral culture is not recommended for routine diagnosis. The recommended method for virus detection is nucleic acid amplification by real-time reverse-transcription polymerase chain reaction (rRTPCR) and by sequencing. The sample is said to be positive (confirm SARS-CoV-2) if the RRT-PCR is positive for at least two genomic targets (N, E, S, or RdRP) that are SARSCoV-2 specific; OR positive RRT-PCR for betacoronavirus, supported by sequencing results of part or all of the viral genome according to SARS-CoV-2. To reduce the spread of the virus, the government began to carry out massive swab tests. Molecular rapid tests are easier to perform and faster because the process is automated which greatly helps speed up detection. To support a safe swab process, in this study an integrated portable swab booth was built. The output of this research is expected to contribute to the prevention of the spread of disease caused by the 2019-nCoV virus.
Steamed cake with okra flour substitution as an alternative to snack for a fibre source
Authors: Rindiani R , Kumalasari P
Published: April 2021

The level of fibre consumption of the Indonesian population is 10.5 g of fibre per day, whereas WHO recommends consuming 25-30 g of dietary fibre per day. Efforts to increase consumption of dietary fibre by adding fibre to steamed cakes The aim of this research is to examine steamed cake substituted by okra flour as an alternative snack for a source of dietary fibre. The research design was a non-factorial Completely Randomized Design (CRD), namely the proportion of wheat flour: okra flour (P). The treatments consisted of P1 = 60%: 40%, P2 = 55%: 45%, P3 = 50%: 50%, P4 = 45%: 55% and P5 = 40%: 60%. The results showed that the substitution of okra flour in wheat flour affects the total fibre content and power development. P3 treatment with a substitution of 50% okra flour is the best treatment. The best composition of steamed cake contains 7.38 grams of protein, 6.37 grams of fat, 37.87 grams of carbohydrates and 5.34 grams of dietary fibre per 100 grams. For daily dietary fibre needs from a snack, it is recommended to consume steamed cakes weighing 100 grams, which can provide 17.8% dietary fibre, 12.3% protein, 9.5% fat, 11.65% carbohydrates of the nutritional adequacy rate.
The effect of temperature variations on koro sword bean flour (Canavalia ensiformis L) and the concentration of the addition of koro sword bean flour on cyanide acid (HCN) content and consumer acceptance of fried chicken seasoning flour
Authors: Purwaningsih H , Ulfah M , Sangari M A , Nuryanti S
Published: April 2021

This study aims to determine the effect of drying temperature and concentration of addition of koro sword bean flour on the HCN content and organoleptic properties of the fried chicken seasoning flour produced and to obtain the drying temperature and concentration of koro sword bean flour that are right for producing fried chicken seasoning flour that is most liked by consumers. The experimental design used was a factorial completely randomized block design (RABL) consisting of two treatment factors with three replications. The first factor was the variation in drying temperature of koro sword bean flour (600C, 700C, and 800C). The second factor is the concentration of the addition of koro sword bean flour (10%, 15%, and 20%). The results showed that drying temperature had an effect on HCN content and taste preferences but did not affect colour preferences of fried chicken seasoning. The most preferred fried chicken seasoning flour is at a drying temperature of 800C with 29.73ppm HCN, while the concentration of flour which was able to produce the most preferred fried chicken spice flour was 20% with 36.50ppm HCN.
Just about right analysis of coffee leaves tea bitterness and astringency by modifying brewing temperature and time
Authors: Fibrianto K , Yuwono S S , Hasyati N
Published: April 2021

Coffee leaves tea as a refreshing functional drink is mainly governed by its phenolic compounds and other antioxidants. Bitterness and astringency induce multi-sensory perception of tea. These attributes are mostly contributed by phenolic compounds, caffeine and tannin that can be modified by temperature and brewing time. Therefore, this current study was dedicated to identify the drivers that affect consumer perception on coffee leaves tea according to Just About Right (JAR) penalty analysis assessed by 112 consumer respondents. Both Arabica and Robusta coffee leaves tea were brewed by decoction (91°C -99°C; 3-5 minutes) and infusion (75°C-85°C; 5-10 minutes) techniques. It was found both astringent-mouth-feel and bitterness were well acceptable by consumers for 5 minutes of 95°C decoction brewing. Correlation between tannin and astringent mouth-feel was significantly correlated. Similar trend was also observed for caffeine and bitter taste.
Identification and evaluation of physical and mechanical properties of Physalis peruviana L
Authors: Hidayat D D , Luthfiyanti R , Iwansyah A C , Herminiati A , Rahman T , Rahman N , Andriansyah R C E
Published: April 2021

The study aimed to evaluate the characteristics of the physical and mechanical properties of Physalis peruviana. The sample had a moisture content of 76.71±1.10 %wb. The results showed that the P. peruviana physically had an average mass, volume, polar diameter, equatorial diameter, geometric diameter, and surface area ranged from 3.03±0.45 gram, 2.91 cm3, 16.99 mm, 17.53 mm, 17.10 mm, and 927.61 mm2, respectively. Furthermore, the average particle, bulk density, sphericity, aspect ratio, and porosity ranged from 1.04 gr/cm3, 0.62 gr/cm3, 97.97±2.64%, 97.00±3.92%, and 59.41±3.39 %, respectively. Based on mechanical properties analysis, P. peruviana had hardness, gumminess, adhesiveness, and chewiness ranged from 1640.52± 371.71 g. force, 406.67±171.75 g. force, -1.22±1.00 g.force/sec, and 102.19±41.60 g. force/sec. The average cohesiveness, resilience, and springiness of P. peruviana ranged from 0.25±0.07 g/force, 0.11±0.04 g/force, 0.25±0.02 g/force, respectively. Regarding the angle of repose, the highest angle of repose occurred on the surface of stainless steel. In general, the angle of repose had a tangential relationship with the samples’ physical biometric dimensions.
Formulation and production costs optimization of complementary food for breast milk from red sorghum flour (sorghum bicolor l.), red bean flour (phaseolus vulgaris l.) and mungbean flour (phaseolus radiatus l.) using linear programming method
Authors: Surahman D N , Taufik Y , Nudianti D P , Rahman T
Published: April 2021

The purpose of this study is to obtain the optimal instant porridge for babies formulation using a linear programming method. The research has been conducted in two stages. Preliminary research aims to determine the characteristics of the raw materials to use. The main research has been conducted by determining the instant porridge for babies formulation using the linear programming method. The responses studied include chemical, physical, microbiological and organoleptic responses. The results show that instant porridge for babies formulation 3 (red sorghum flour 9%, red bean flour 3.6% and mung bean flour 5.4%) is the selected formula with a production cost of Rp. 1.319, - / 100 grams with the results of the analysis including the chemical response having a water content of 1.35%; ash content 3.62%; protein content 19.92%; fat content 1.44%; carbohydrate content 73.67%; and crude fiber content of 1.11%. Physical responses include rehydration time of 45.8 seconds; bulk density value 0.85 g / ml; water absorption 3.19 g / g; and 1.87 g / g oil absorption. The microbiological response which has a TPC value of 9x102 CFU/ml and Salmonella sp was not identified. The formulation 3 fulfills the highest protein needs with 33.22%.
The effect of temperature and time of baking to sensory quality of banana-based food bars
Authors: Rahman T , Luthfiyanti R , Iwansyah A C , Choiriyah N A , Ishartani D , Andriasyah R C E
Published: April 2021

The study aimed to characteristics and evaluation of the temperature and time of baking of banana-based food bars favored. The assessment analyzed the physicochemical and hedonic tests. The raw materials used four types of Banana, namely, “pisang tanduk”, “pisang nangka”, pisang ambon and “pisang raja”. The experimental used temperature (105°C and 125°C) and time (6, 10, and 45 minutes) of baking as a treatment. The results showed that on raw material characterization, it appears that soybean flour contains high protein and fat at 40.12% and 17.45%, respectively. Banana flour and tapioca starch contain high carbohydrate at 82.44-86.08% and 86.92%. Pisang ambon has the highest water, ash, and protein content compared to “pisang tanduk”, “pisang nangka”, and “pisang raja”. Based on the hedonic test, food bars were made using a ratio of banana flour: banana ambon puree (100:125 grams) with a temperature of 105°C baked for 45 minutes followed with a temperature of 125°C baked for 6 minutes.
The estimation of shelf life of instant porridge in the different packaging with method of accelerated shelf life testing of arrhenius model
Authors: Herminiati A , Nurfajrina L P , Achyadi N S , Agustina M
Published: April 2021

Shelf life of food product is important information for consumers. Product development of instant porridge that enriched with inulin as a prebiotic and expected to have a role in increasing calcium absorption in infants with aged 6-24 months. This study aimed to determine the shelf life of instant porridge products. The methods included in this research: (1) production of instant porridge products, (2) packaging with aluminum foil and polyethylene plastic, (3) stored at temperatures of 15°C, 30°C and 45°C which observed for 35 days with 7- day intervals, (4) analyzes of moisture content, protein content, total plate count, and organoleptic responses to critical responses, (5) analysis data was processed using the Arrhenius model ASLT method. Research results showed that instant porridge products stored at a temperature of 55°C were dropped by panelists on the 15th day. Instant porridge products with aluminum foil packaging have the longest shelf life with the lowest activation energy on protein content parameters with shelf life held at 15°C was 358 days, at 30°C was 214 days and at 45°C was 143 days. The recommendation for instant porridge should be packed using aluminum foil with storage temperature of 15°C.
Substitution of fishbone powder in the development of choco chips cookies
Authors: Ananda S , Anggraeni A A
Published: April 2021

The increase in Indonesia’s fish consumption has led to an increase in fishery industry waste, such as fish bones. Fishbones contain sodium, phosphorus, and calcium, which are essential for the human body. Therefore, fish bones are then processed into fishbone powder. Fishbone powder can substitute wheat flour in cookies development. This study aimed to evaluate choco chips cookies’ sensory characteristics that have been substituted by fishbone powder from patin fish, mackerel fish, and snakehead fish. This study employed a research and development methods, with a 4D development model (define, design, develop, and disseminate). The substitution of wheat flour to fishbone powder in choco chips cookies was 7%, 10%, and 12%. The characteristic sensory analysis was carried out by one trained panelist and five semi-trained panelists. The hedonic test was conducted by two trained panelists and 30 untrained panelists. The sensory analysis results showed that the substitution of 10% fish bone powder in choco chips cookies did not show a significant effect from wheat flour cookies (p≤0.05) in terms of color, aroma, texture, taste, and overall.
Moringa chicken nugget as supplementary food for toddler to prevent stunting
Authors: Santi M W , Triwidiarto C , Syahniar T M , Firgiyanto R , Oktafa H
Published: April 2021

Stunting is a condition when toddler have less height compared to age, caused by poor nutrition. Probolinggo is one of area which produces moringa leaves, one of good local food ingredients for supplementary food, could be modified with chicken nugget. The research aimed to compare nutrient levels in chicken nugget as supplementary foods which modified with and without moringa leaves. Data were collected by proximate test in August 2020. The results showed nutrient levels of chicken nugget without moringa leaves had 19.2% crude protein, 2.8% crude fat, and 1.7% crude fiber. Meanwhile, nutrient levels of chicken nugget with 50 g moringa leaves (20% of chicken meat) had 18.4% crude protein, 2.8% crude fat, and 3.4% crude fiber. Based on result, it could be concluded that there is no significant difference of nutrition levels (crude protein and crude fat) between two samples, but the chicken nugget with moringa leaves has higher crude fiber than chicken nugget without moringa leaves. Thus, the chicken nugget with moringa leaves could be used as supplementary food for toddler with high crude protein and crude fiber.