bluuebunny/crossref_metadata_2025_split huggingface dataset:
Multimodal guided wave inversion for arterial stiffness: methodology and validation in phantoms
Authors: Roy Tuhin , Urban Matthew , Xu Yingzheng , Greenleaf James , Guddati Murthy N 
Published: May 2021

Abstract
Arterial stiffness is an important biomarker for many cardiovascular diseases. Shear wave elastography is a recent technique aimed at estimating local arterial stiffness using guided wave inversion (GWI), i.e. matching the computed and measured wave dispersion. This paper develops and validates a new GWI approach by synthesizing various recent observations and algorithms: (a) refinements to signal processing to obtain more accurate experimental dispersion curves; (b) an efficient forward model to compute theoretical dispersion curves for immersed, incompressible cylindrical waveguides; (c) an optimization framework based on the recent observation that the measured dispersion curve is multimodal, i.e. it matches for not one but two different wave modes in two different frequency ranges. The resulting inversion approach is validated using extensive experimental data from rubber tube phantoms, not only for modulus estimation but also to simultaneously estimate modulus and wall thickness. The observations indicate that the modulus estimates are best performed with the information on wall thickness. The approach, which takes less than half a minute to run, is shown to be accurate, with the modulus estimated with less than 4% error for 70% of the experiments.
Self-powered pressure sensor based on microfluidic triboelectric principle for human–machine interface applications
Authors: Goh Qi Lun , Chee PeiSong , Lim Eng Hock , Liew Guo Guang 
Published: May 2021

Abstract
In pace with the fourth industrial revolution, the human–machine interface (HMI) has prospered due to the need of information exchange between human and machines. Although tremendous effort has been devoted to the development of various sensors for HMI systems, those that are made using rigid electronics have constraints in wearability, comfortability, and power consumption. In this paper, a wearable and stretchable self-powered pressure sensor is proposed based on the microfluidic triboelectric principle. Triboelectric output is produced through the charge electrification when the pre-filled liquid in the reservoir flows into a polydimethylsiloxane-made microchannel at an applied pressure. The pressure sensor can generate a peak-to-peak output voltage of 4.2 mV–42.6 mV when an input pressure ranging from 50 kPa to 275 kPa was applied. We further characterize the dynamic response of the pressure sensor where the peak-to-peak output voltage is seen to have increased from 0.2 mV to 11.5 mV when the frequency of the compression pressure is raised from 1 Hz to 13 Hz. As a proof of principle in demonstrating the pressure sensor for wearable HMI application, the soft pressure sensor was attached on a human finger to function as a touch button. The touch button was then used to control a real-time light-emitting diode illumination and gaming interaction. Unlike the conventional touch button that only produces a binary output, this compact touch button can emulate a real-time impact event from the applied pressure. These remarkable features enrich the sensing dimension for HMI, which shows the potential of our work for advanced human-machine manipulation.
Optimal computation of anisotropic galaxy three point correlation function multipoles using 2DFFTLOG formalism
Authors: Umeh Obinna 
Published: May 2021

Abstract
We study two key issues militating against the use of the anisotropic three-point correlation function (3PCF) for cosmological parameter inference: difficulties with its computational estimation and high-dimensionality. We show how high-dimensionality may be reduced significantly by multipole decompositions of all angular dependence. This allows deriving the full expression for the multipole moments of the anisotropic 3PCF and its covariance matrix in a basis where the dimensionality reduces from nine to two at each multipole in the plane-parallel limit. We use 2D FFTLog formalism to show how the multipole moments with double momentum integrals over the product of bispectrum and two highly oscillating spherical Bessel functions and its covariance with double momentum integrals over the product of three galaxy power spectra and a combination of four highly oscillating spherical Bessel functions may be computed optimally.
The Effect of GA3 Concentration, Micro Tubers Size, and Dark or Light Storage on Breaking Potato Dormancy
Authors: Karjadi A K , Waluyo N 
Published: May 2021

Abstract
Potatoes (Solanum tuberosum L) are included in priority crops considering their function as a source of carbohydrates in food diversification. One of the techniques in producing quality seed is through tissue culture continued within in vitro tuber production that is micro tubers. The aim of this research was to observe the effect of GA3 concentration, storage, and size of micro tubers on breaking dormancy. The activities were carried out in the tissue culture laboratory of IVEGRI from April to July 2018. The treatments were to determine the effect of GA3 (10,15,20 ppm) and the size of micro tubers cv. Granola i.e. large (>4 g); small (<1 g); medium (>1 g - <4 g), and storage system dark (G), light (T). The experimental design was a complete randomized block design with 3 replications, each treatment consists of 20 micro tubers. Results of experiment micro tubers size and storage were significantly different, GA3 concentration does not affect the percentage shoot growth which initializes the breaking dormancy of tubers at 8 to 10 WAS (Weeks After Storage). Average shoot number 0.3 – 1.25 per tuber and shoot length 0.30 – 0.80 cm. In general, each micro tuber only grows one shoot. On visual observation, the large size of micro tubers will have quality and length of shoot better than small size micro tubers.
Effect of Added PPM on Murashige and Skoog Media for Shallot Meristematic Proliferation
Authors: Karjadi A K , Gunaeni N 
Published: May 2021

Abstract
Shallot (Allium ascolonicum L) are plants that belong to genus Allium sp that were propagated vegetatively through bulbs. In the developed countries, shallot seed production can be produced through in vitro/micropropagation. The activity observed the effect of explant source and added of PPM ( Plant Preservative Mixture) on Murashige and Skoog media in the growth and development of explants (Shoot tip, meristematic). The activity has been conducted in the tissue culture laboratory of IVEGRI from January to April 2019. As an explant bulb of shallot cv. Bima Brebes were infected OYDV or SYSV that has been tested by serology DAS ELISA. Media composition was MS (1962) with supplement sucrose 30 g L-1+ IAA 2 mg L−1 + Kinetin 2 mg L−1 + GA3 0.01 mg L−1 + Myo inositol 100 mg L−1 + gel rite 2 g L−1, pH 5.7. The treatment were PPM concentration (0;0.25;0.50;0.75; 1 mL L−1) and the explant : shoot tip (A), meristematic (B). Results of the experiment on visual observation were carried out randomly on growth and development, serology test of OYDV, and SYSV of the plantlets. On visual observation obtained MS media composition with 1 ml L−1 PPM the percentage of proliferation, there were no different from other concentrations of PPM and proliferation ≥ 60% for all media composition. DAS ELISA test for plantlet infected OYDV and SYSV for both explants was 47.37% - 69.33%.
The effect of bulbil’s sizes on the growth of iles-iles (Amorphophalus muelleri Blume)
Authors: Tresniawati C , Ibrahim M S D 
Published: May 2021

AbstractIles iles(Amorphophallus muelleriBlume) is an industrial comodity. Indonesian Industrial and Beverage Crops Research Institute have been collected and studiedAmorphophallus muelleriBlume germplasm. The aim of this study was to identify the influence bulbils sizes to plant growth. Plant material was originated from Bajawa, East Nusa Tenggara. The research was carried out at the green house, at an altitude of 450 m above sea level, with soil type is latosol, and climate type is B, according to Oldeman, from August 2019 to May 2020. The bulbils were categorized into three groups based on weight and diameter, i.e. small size (diameter 10.00-15.99 mm and 0.70-3.99 g); medium size (diameter 16.00-23.99 mm and 4.00-5.99 g); and large size (24.00-33.99 mm and 6.06-12.99 g). Experimental design were Randomized Block Design with three replications. The characters observed were plant height, pseudo stem diameter, number of branch, leaf length, and leaf width. The result showed as the size of the planted bulbils increased, parameters measured also increased and significantly different. In the development of Iles-iles or Porang from Bajawa, East Nusa Tenggara, planting material could be used in the form of bulbils with a diameter were 24.00-33.99 mm and weight were 6.06-12.99 g.
Improving Nutritional Value of Cow Manure with Biomass Ash and Its Response to the Growth and K-Ca Absorption of Mustard on Inceptisols
Authors: Hanudin E , Iskyati W , Yuwono N W 
Published: May 2021

AbstractCow manure is widely used by Indonesia vegetable farmers but the nutrients content is relatively low (paticularly for K and Ca). Wood and husk ash as a by-products from the pottery burning process are widely available in the villages and have not been fully utilized. The ash is rich in K and Ca nutrients, so it is useful for increasing the nutritional value of cow manure. This study was aimed to determine the effect of enricment cow manure (ECM) on soil chemical properties, growth and K-Ca uptaken by mustard on Inceptisols. The green house experiment conducted by using 5 kg of soil, with a completely randomized design. As treatment 1: Mixed cow manure (CM)+Husk Ash (HA) with doses of 0+100, 900+100, 925+75, 950+50, 975+25 g/pot); Treatment 2: CM+Wood Ash mixture (WA) with the same dose. While there are 3 controls, namely: soil without fertilizer, soil + CM 1000 g/pot, and soil + CM 123 g/pot. The results showed that ECM significantly increased the soil fertility and plant growth. The highest K and Ca uptake in the shoot was obtained at CM + HA treatment with dose of 925 + 75 and 900 + 100 g/pot, respectively. This research is part of a step towards grounding the organic agriculture concept, so there is still an opportunity to research other materials as materials for manure fortification.
Gene Expression of G-Box Binding Factor3 (GBF3) in Local Cassava (Manihot esculenta Crantz) under Drought Stress
Authors: Genesiska  , Sarjiyah  , Ulfa U T , Samidjo G S 
Published: May 2021

Abstract
Commonly, cassava could survive for a moment under drought stress. However, there are limitations to face the drought stress for the growth and productivity then affect starch synthesis. Gunungkidul is one of the biggest cassava producers in Indonesia, in meanwhile cassava production is not able to increase due to the characteristics of karst land topography and rainfed area. Tolerance of drought stress is a complex process relates to physiological and molecular responses. In molecular level, many genes revealed multi-complex responses to drought stress. One of the responsible gene assumed to correlate to drought stress is G-Box Binding Factor (GBF3). The study aims to detect the gene expression of GBF3 in local cassava cultivars of Gunungkidul under drought stress. The result revealed that at moisture levels of 50 percent and 25 percent, GBF3 (Gene Expression of G-Box Binding Factor 3) expressions are identified in the cassava cultivar Gatotkaca, which differed from the detection result of the cassava cultivar Pandesi hijau at all moisture levels. Based on the presence of phenotypic characters and gene expression, the local cultivar of Gatotkaca is assumably to be more drought tolerant than Pandesi Hijau.
Effectiveness of Banana Peel-Based Liquid Organic Fertilizer Application as Potassium Source for Eggplant (Solanum melongena L.) Growth and Yield
Authors: Hariyono  , Mulyono  , Ayunin I Q 
Published: May 2021

Abstract
Banana peel is an organic waste, which has nutrients that are useful for plants. This study was aimed to determine the effectiveness of liquid organic fertilizer (LOF) made by banana peel(BP) as a potassium source for eggplant (Solanum melongena L.) growth and determine the right balance between the use of BP-LOF and anorganic KCl fertilizer. The study was conducted in the Agricultural Experiment Field of UMY from September to November 2018. The study was conducted using a Completely Randomized Design (CRD), which consisted of 6 treatments namely (1) 100% BP-LOF, (2) 80 % BP-LOF + 20% KCl fertilizer, (3) 60% BP-LOF + 40% KCl fertilizer, (4) 40% BP-LOF + 60% KCl fertilizer, (5) 20% BP-LOF + 80% KCl fertilizer, and (6) 100% KCl fertilizer as control. The results showed that the comparison of BP-LOF application gave similar results to the growth and yield of eggplant.
Modified Atmosphere Packaging and Heat Treatment for Maintaining the Quality of Fresh-cut Pineapple (Ananas comosus)
Authors: Prabasari Indira , Setiawan C K. , Andani A P. , Kurniawansyah D L. , Achsan W N. , Hasanah N.A.U 
Published: May 2021

AbstractThe research aimed to determine the effect of modified atmosphere packaging (MAP) and heat treatment to maintain the quality and prolong the shelf life of fresh-cut pineapples (Ananas comosus). The fresh-cut pineapples of cultivar “Queen” and “Cayenne” were treated with four treatments, namely (P1) MAP with 70% argon gas (Ar) and heat treatment at 40oC for 5 min, (P2) heat treatment at 40° for 5 min, (P3) MAP with 70% Ar, (P4) Control. All treatments were stored in a cooler at 10oC and measurements of physical (firmness) and chemical (total phenol, total sugar and titratable acidity) were performed on 0, 2, 4, 6, 8 and 10 days of storage. Each treatment was replicated three times and the results were analyzed using Completely Randomized Design (CRD). The results showed that the application of MAP and heat treatment either combined or individually was able to maintain the quality and prolong the shelf life of fresh-cut pineapple in both cultivars.
Use of Light Trap for Controlling Cabbage Pests
Authors: Prabaningrum L , Moekasan T K 
Published: May 2021

Abstract
Cabbage leaf caterpillars (Plutella xylostella L.) and cabbage head caterpillars (Crocidolomia binotalis Zell.) are key pests of cabbage in Indonesia. Crop loss due to both pests can reach as high as 50-100%. In general, the pests control done by the farmers is still based on the use of insecticides. Therefore, it is necessary to identify another method that is environmentally friendly. This study aimed at determining the effectiveness of the light trap in controlling P. xylostella and C. binotalis. The experiment was conducted at the Margahayu Experimental Garden, the Indonesian Vegetable Research Institute in Lembang (1,250 m asl.), from March to July 2018. The experiment was designed using the paired comparison with two treatments. The treatments tested were: (A) using light traps + control threshold and (B) without light traps + sprayed with insecticide twice a week. Each treatment consisted of six replications. The results showed that the use of light traps was able to suppress the population of P. xylostella and S. litura larvae and egg masses of C. binotalis. It also reduced the frequency of insecticide spray by 81.82% and insecticide costs by 77.61 %. Cabbage cultivation using a light trap could maintain cabbage yield equivalent to yield on the treatment used insecticides twice a week and gave more profitable than insecticide spray twice a week. Therefore, the use of a light trap for controlling lepidopteran pests in cabbage cultivation was properly adopted.
Optimum dosage of rice husk-based silicon foliar spray to improve yield of soybean grown on irrigated lowland
Authors: Herawati N , Hadiawati L , Zulhaedar F 
Published: May 2021

Abstract
Silicon (Si) is highly abundant in soil and plays important role in growth and development of plant. However, number of available Si is limited depend on soil type and condition, thus supplementary Si from fertilizer is needed. Rice husk is one of potential source of Si fertilizer. This study aimed to determine the optimum dosage of rice husk-based bio-silicon foliar spray (SiF) improve yield of soybean. The experiment was laid out in a randomized block design at Narmada Research Station of AIAT (Assessment Institute for Agricultural Technology) of West Nusa Tengara Province from May to June 2018. There were four treatments of SiF concentration with four replications viz. SiF1 = 3 ml/lt, SiF2 = 6 ml/lt, SiF3 = 9 ml/lt, and SiF0 = 0 ml/lt (control). The results showed that plant growth and yield attribute i.e., weight of biomass, number of pods, fresh pod weight, yield were improved on all SiF treatments when compared to the control. Total ground above biomas m−2 was also significantly improved, while the highest yield produced at SiF3. Current study suggests that optimum dosage of rice husk-based bio-silica foliar spray for lowland irrigated soybean was 6 ml/lt, and further on-farm experiment is needed to test the dosage at wider scale.
Yield and properties of nanobiosilica extracted from rice husk using technical grade chemicals: effect of extraction temperatures and times
Authors: Setyawan N , Hoerudin  , Wulanawati A , Suismono  
Published: May 2021

Abstract
Silica particles contained in rice husk (RH) are valuable materials with various industrial applications. However, simple and feasible techniques for large-scale production of silica nanoparticles from RH (nanobiosilica) remain challenging. This study was aimed to investigate the influence of extraction temperatures and times on the yield and characteristics of nanobiosilica extracted from rice husk ash (RHA) using technical grade chemicals. The nanobiosilica was extracted from RHA using a simple sol-gel technique at three temperatures (25, 50, and 70 ˚C) for three extraction times (1, 2, and 3 h). The results showed that the extraction yield of nanobiosilica was significantly influenced by the extraction temperatures and times. The highest extraction yield (67.2%) was obtained at a temperature of 70 ˚C for 3 h. The use of technical grade chemicals affected the quality of nanobiosilica produced. The concentration of SiO2 in nanobiosilica from the best treatment was 86.21%. The presence of asymmetric Si-O-Si functional group was observed at 1101.68 cm−1 wavelength. The nanobiosilica produced had particle sizes of 25.1-40.6 nm, bulk density of 0.67-0.81 g/mL, and averaged crystallinity degree of 58.50%. The best extraction technique developed may be used for large-production of nanobiosilica from RHA, depending on technical specifications required for further applications.
Changes in dryland forest cover in several sub-districts in Deli Serdang Regency
Authors: Rahmawaty  , Harahap M M , Rauf A , Kurniawan H 
Published: May 2021

Abstract
Deli Serdang Regency is located in a strategic area because it surrounds Medan City. This study aimed to analyze changes in dryland forest land cover in Deli Serdang Regency, which is located in the up stream of the Belawan Watershed and the Deli Watershed for three time periods (2009, 2014, 2019) using the Geographical Information System (GIS). The results showed that during the period of 10 years 2009-2014-2009 the forest land cover in Deli Serdang Regency decreased from 19,517.58 ha in 2009 to 19,484.93 in 2014 and to 19,426.73 ha in 2019. Dryland forest land cover in several sub-districts in Deli Serdang Regency decreased. Hence, mixgardens, open land, cultivation, and shrubs become increased. In a period of 10 years, an area of 19,426.73 ha of dryland forest cover did not change, 26.80 ha become mixed gardens, 46.02 ha become open land, 5.85 ha become cultivation, and 12.18 ha become shrubs. There were five sub-districts with reduced forest land cover, namely: Gunung Meriah, Kutalimbaru, Sibolangit, STM Hilir, STM Hulu. Meanwhile, there were two sub-districts that have not changed, namely: Sibiru-biru and Bangun Purba.
Utilization of local cayenne pure lines for F-1 hybrid breeding program
Authors: Gaswanto R , Kirana R , Gunaeni N 
Published: May 2021

Abstract
Local cayenne can be used as a good genetic material for F-1 hybrid variety. The purpose of this research was to analyze and estimate general (GCA) and specific combining ability (SCA), heterosis, and heterobeltiosis value, then to evaluate and select F-1 progenies. The research was conducted from February to December 2019 at Indonesian Vegetables Research Institute, Lembang, (1,250 m sal). The genetic material consisted of six local cayenne lines i.e.: BNT, GNY, SGT, BGJ, HIU, MDN, 15 F-1 progenies, and STK as a commercial variety. The results showed that: (1) BGJ line had the highest GCA value on weight per one fruit (0.74), fruit length (0.77), fruit diameter (0.57), and fruit weight per plant (13.83), while the highest GCA value on fruit number per plant was MDN line (35.69); (2) F-1 SGT x HIU had the highest SCA value onr weight per one fruit (0.27), fruit length (0.56), and fruit weight per plant (69.90), while the highest SCA values fruit diameter (0.48) and fruit number per plant (129.29) were obtained by F1 HIU x MDN and F-1 BGJ x HIU respectively; (3) F-1 BNT x MDN, F-1 SGT x HIU, F-1 BGJ x MDN are recommended as advance hybrid lines.
Non-destructive determination of SSC and pH of banana using a modular Vis/NIR spectroscopy: comparison of Partial Least Square (PLS) and Principle Component Regression (PCR)
Authors: Masithoh R E , Pahlawan M F R , Wati R K 
Published: May 2021

Abstract
Determination of soluble solid content (SSC) and pH of banana was investigated using a modular Vis/NIR spectroscopy in reflectance mode. Vis/NIR spectroscopy has been applied for non-destructive SSC or pH measurement, but limited studies were conducted for a modular VIS/NIR spectroscopy. This study was conducted to develop a calibration model to predict SSC and pH in bananas using a modular type of VIS/NIR spectroscopy at wavelength of 350-1000 nm. Two chemometrics analysis namely partial least square (PLS) and principle component regression (PCR) were used to develop calibration models and to predict SSC and pH of bananas. Normalization, baseline correction, standard normal variate (SNV), and multiplicative scatter correction (MSC) pre-processing were used for spectra transformation. Research showed that PLS regression produced better models compared to PCR in determining SSC and pH contents. PLS regression resulted in RC
2
of 0.95, RMSEC of 1.27, Rp
2
of 0.85, RMSEP of 1.98, and bias of -0.09 for SSC and RC
2
of 0.96, RMSEC of 0.05, Rp
2
of 0.82, RMSEP of 0.11, and bias of 0.11 for pH. PCR resulted in RC
2
of 0.78, RMSEC of 2.63, Rp
2
of 0.76, RMSEP of 2.71, and bias of -0.12 for SSC and RC
2
of 0.71, RMSEC of 0.14, Rp
2
of 0.62, RMSEP of 0.16, and bias of -0.02 for pH. This modular Vis/NIR instrument combined with proper pre-processing method and chemometric analysis is promising to be used for determination of SSC and pH of fruits.