bluuebunny/crossref_metadata_2025_split huggingface dataset:
Modal Test and Model Modification of the Rotating Parts of a Self-propelled Antiaircraft Gun
Authors: Huan Liu , Pengke Liu , Bianfang Ning , Faming Zhou , Fanfan Zhang , Jiaxing Li 
Published: June 2023

Abstract
The rotating parts of a self-propelled antiaircraft gun is taken as the research object, the single point excitation and multi-point response frequency response function method were used to test the experimental mode. At the same time, the finite element simulation model is established, and the frequency and mode of vibration are obtained. Combined with the modal test and analysis of the rotating parts, the stiffness of the connection between the rotating parts and the turret is selected as the optimization parameter. The numerical simulation model was optimized and modified by comparing the experimental and simulation modes and combining with the sensitivity analysis of the connection parameters, the correction variable with the higher sensitivity of the parameters to the results was selected. After optimization, the error between the first order calculation frequency and the test frequency is reduced from 8.61% to 1.13%, it is shown that the simulation model optimized by parameters can better reflect the physical characteristics of the real structure.
Study on the influence of helicopter rotor flow on projectile motion
Authors: Liu Z L , Dai J S , Lin S Y , He F 
Published: June 2023

Abstract
In this paper, the muzzle flow field generated during helicopter gun firing is numerically studied. Based on Navier-Stokes equation and Standard k − ε turbulence model, the projectile motion is realized by using overlapping mesh technology. The development of the muzzle flow field formed by complex wave systems such as Mach disk and shock wave under the influence of helicopter rotor flow at different speeds, as well as the force and motion state of the projectile in the flow field are analysed. The results show that the degree of asymmetry of the flow field, the force and offset of the projectile are positively correlated with the rotor flow velocity. The research will help to improve the understanding of the muzzle flow field of helicopter gun and provide a new idea for improving the firing accuracy of helicopter gun..
Scalar fields in the de Sitter spacetime
Authors: Kamenshchik Alexander Y , Starobinsky Alexei A , Vardanyan Tereza 
Published: June 2023

Abstract
We examine long-wavelength correlation functions of massive scalar fields in de Sitter spacetime. For the theory with a quartic self-interaction, the two-point function is calculated up to two loops. Comparing our results with the Hartree-Fock approximation and with the stochastic approach shows that the former resums only the cactus type diagrams, whereas the latter contains the sunset diagram as well and produces the correct result. We compare our results with the preceding results obtained for the massless scalar field.
Remarks on the Integral Form of D=11 Supergravity
Authors: Grassi Pietro Antonio 
Published: June 2023

Abstract
We make some considerations and remarks on D = 11 supergravity and its integral form. We start from the geometrical formulation of supergravity and by means of the integral form technique we provide a superspace action that reproduces (at the quadratic level) the recent formulation of supergravity in pure spinor framework. We also make some remarks on Chevalley-Eilenberg cocycles and their Hodge duals.
On the Resilience of Black Hole Evaporation: Gravitational Tunneling through Universal Horizons
Authors: Schneider M. , Del Porro F. , Herrero-Valea M. , Liberati S. 
Published: June 2023

Abstract
Using a quantum tunneling derivation, we show the resilience of Hawking radiation in Lorentz violating gravity. In particular, we show that the standard derivation of the Hawking effect in relativistic quantum field theory can be extended to Lorentz breaking situations thanks to the presence of universal horizons (causal boundaries for infinite speed signals) inside black hole solutions. Correcting previous studies, we find that such boundaries are characterized by a universal temperature governed by their surface gravity. We also show that within the tunneling framework, given the pole structure and the tunneling path, only a vacuum state set in the preferred frame provides a consistent picture. Our results strongly suggest that the robustness of black hole thermodynamics is ultimately linked to the consistency of quantum field theories across causal boundaries.
Quantum Chiral Superfields
Authors: Fioresi Rita , Lledó María A. , Razzaq Junaid 
Published: June 2023

Abstract
We define the ordinary Minkowski space inside the conformal space according to Penrose and Manin as homogeneous spaces for the Poincaré and conformal group respectively. We realize the supersymmetric (SUSY) generalizations of such homogeneous spaces over the complex and the real fields. We finally investigate chiral (antichiral) superfields, which are superfields on the super Grassmannian, Gr(2|1, 4|1), respectively on Gr(2|0, 4|1). They ultimately give the twistor coordinates necessary to describe the conformal superspace as the flag Fl(2|0, 2|1; 4|1) and the Minkowski superspace as its big cell.
ADENIUM — A demonstrator for a next-generation beam telescope at DESY
Authors: Liu Yi , Feng Changqing , Gregor Ingrid-Maria , Herkert Adrian , Huth Lennart , Stanitzki Marcel , Teng Yao , Yang Chenfei 
Published: June 2023

Abstract
High-resolution beam telescopes for charged particle tracking are one of the most
important and equally demanding infrastructure items at test beam facilities. The main purpose of
beam telescopes is to provide precise reference track information of beam particles to measure the
performance of a device under test (DUT). In this report the development of the ADENIUM beam
telescope (ALPIDE sensor based DESY Next test beam
Instrument) as a demonstrator and prototype for a next-generation beam
telescope is presented. The ADENIUM beam telescope features up to six pixelated reference planes
framed by plastic scintillators for triggering. ADENIUM is capable of replacing the currently
used EUDET-type beam telescopes without impacting existing DUT implementations due to the
integration of the telescope DAQ into EUDAQ2.

In this report the concept and design of the ADENIUM telescope as well as its performance are
discussed. The telescope's pointing resolution is determined in different configurations. For an
optimal setup at a momentum of 5.6 GeV with an ALPIDE as DUT, a resolution better than
3 μm has been extracted. No rate limitations have been observed at the DESY II test beam.
The potency of soil bacteria on soil phosphorus solubilization and IAA production for innovation on sustainable Melon (Cucumis melo) production through biofilm biofertilizer
Authors: Amalina D D , Sudadi  , Pratama N M , Dewi W S 
Published: June 2023

Abstract
To fulfils the demand of melons (Cucumis melo), it requires intensive maintenance by agrochemical products. If this is done continuously, it will lead to soil degradation and disrupt the sustainable food supply. Therefore, an innovation is needed to maintain the sustainable food supply using biofilm biofertilizer technology. This study aims are to determine the potential of bacteria isolated from melon rhizosphere to solubilize phosphate and producing indole acetic acid (IAA) so that it can be developed into biofilm biofertilizer. Soil samples were taken from three melon gardens owned by farmers located in Sragen Regency, Karanganyar Regency and Wonogiri Regency, Central Java. In the laboratory, the soil bacteria then isolated from the soil using the dilution method. The isolates obtained then tested for their ability to solubilize phosphate and produce IAA. Phosphate is an essential nutrient for plant growth and IAA is plant growth promoting. The results showed that the highest phosphate solubilization potential was produced by bacterial isolate SRG 1A with a halo zone ratio of 1.957 and the highest concentration of IAA was produced by bacterial isolate WNG 1B with a value of 6.151 ppm. Based on the ability of the bacteria, indicates that the obtained bacterial isolates have the potential to be developed as a biofilm biofertilizer to help the growth of melon plants because it has the potency to solubilize soil nutrient and produce IAA.
The effect of differences in lactation period and milking time on milk production and quality of Saanen Etawa Crossbreed Goats (Sapera)
Authors: Pramono A , Altiara D N P , Cahyadi M 
Published: June 2023

AbstractThis research aims to analyze the effect of different lactation periods and milking time on milk production and quality in Sapera goats (Saanen Peranakan Etawa). The research was carried out from September 2021 to January 2022. The materials used were 8 Sapera goats in the II lactation period and 8 Sapera goats in the III lactation period by collecting milk samples in the morning and afternoon. Milk quality analysis of Sapera goats milk using Lactoscan SAP (Nova Zagora, Bulgaria). The following parameters observed were milk production, fat content, protein content, lactose content, and density. This study used the Nested Design method, namely the nested milking time in the lactation period. The research data were analyzed statistically using T Test. The results showed that the difference in lactation period in Sapera goats could affect the density of milk (p<0.05). Differences in milking time in Sapera goats can affect milk production, milk protein content, milk lactose content and density (p<0.05). The conclusion of this study was that Sapera goats milk in the III lactation period showed a higher density of milk than II lactation period. Sapera goat milk yield from morning milking associated higher milk production, lactose content and density than the afternoon milking, but the protein content in the afternoon milking time was higher than the morning milking time and was still in the normal range. Milk fat content and milk protein content have met the standard of SNI No. 01–3141–2011 and Thai Agricultural Standard (TAS) 6006-2008.
Effect of boiling time on the stability of the phenolic compounds in wedang uwuh after gastric digestion
Authors: Fauziah IN , Prangdimurti E , Palupi NS 
Published: June 2023

Abstract
Plant-based products are an excellent source of dietary phenolic compounds, such as herbal drinks, juices, dried fruits, etc. Wedang uwuh is one of the herbal drinks that is made from a mixture of herbal plants. In previous studies, it has been reported that the boiling time affects the total phenolic content and antioxidant capacity of wedang uwuh. However, there has been no research on the effects of digestion on the stability of the phenolic components in wedang uwuh. This study aims to evaluate the stability of phenolic compounds of wedang uwuh after gastric digestion simulation with different boiling times of 5, 10, and 15 minutes. This research used total phenolic content assay, and DPPH• radical scavenging capacity to determine the stability of phenolic compounds after gastric digestion simulation. We found that the boiling time affected the amount of extractable and stability of the phenolic compounds in wedang uwuh during gastric digestion. There was a degraded capacity of DPPH radical scavenging after gastric digestion. The total phenolic and antioxidant capacity before consumption did not indicate the quantity of bioaccessible. Further research using intestinal digestion simulation is needed to obtain the bioaccessibility of wedang uwuh.
Effect of Storage time on quality of Bebek Ungkep in retort pouch
Authors: Mardiana Nur Agustin , Kurniawan Hindra , Wirawantoro Aditya , Purnomo Panji , Prasetiyo Bagus 
Published: June 2023

Abstract
Bebek ungkep is highly commercialized in Indonesia, but it has a short shelf life. To overcome the problem, we used a retort pouch to prolong the shelf-life of the product. This study aimed to evaluate the effect of storage time on the quality of Bebek Ungkep in retort pouch packaging based on physicochemical, microbiological, and sensory analysis. The parameters were free fatty acid value, pH value, total plate counts of aerobic and anaerobic bacteria, and sensory. This study used a Randomized Block Design (RBD) with one experimental factor: the length of storage time. The storage time was 0, 2, 4, and 6 weeks. The data were evaluated by using one-way ANOVA (α= 95%) and followed by Fisher’s test. The results showed that storage time affected FFA and pH values of retorted Bebek ungkep. Meanwhile, total plate counts of aerobic and anaerobic bacteria were not significantly different. Based on sensory analysis, color, and aroma were not significantly different, while taste and texture were significantly different.
The extraction effect of the skin of dragon fruit (Hylocereus polyrhizus) to its phenolic compounds and its antioxidants: A review
Authors: Harni M. , Anggraini T. , Rini  , Suliansyah I. 
Published: June 2023

AbstractDragon fruit contains various nutrients and functional values both in the flesh and skin. The skin of dragon fruit contains 30-35% water. It has lots of phenolic compounds and antioxidants, of which the higher amount of antioxidants are in the skin. These compounds are very easily damaged due to the extraction process especially if done incorrectly. This article is written to be a guide in selecting the extraction process in order to preserve the compounds. Based on the review, it is found the modern UAE (Ultrasound Assisted Extraction) process provides better quality than the other various conventional and modern extraction processes. UAE is an extraction process that does not use a heating process in its extraction which can damage the phenolic compounds and antioxidants. The results of the analysis of phenolic compounds using the UAE system have found betacyanin 17.64 mg, phenolic compounds 65.16 mg, flavonoid compounds 195 mg and antioxidants 620 mol. Thus, the recommended treatment to do is to use UAE extraction.
Analysis of chili supply in Indonesia
Authors: Sundari Mei Tri , Darsono  , Sutisno Joko , Antriyandarti Ernoiz 
Published: June 2023

Abstract
This study aims to determine the supply factor of chili, the dominant factor, and the elasticity of supply in the Indonesian research location. Multiple linear regression was used to analyze the data. The results showed that the variable number of chili production in the previous year and chili area in year t significantly affected the supply of chili in Indonesia. In contrast, the price of chili in the previous year and the price of urea fertilizer in year t had no significant effect. A variable of chili area is the dominant factor in the supply of chili. The value of elasticity in the short and long term on the number of chili production in the previous year is inelastic. At the same time, the variable of chili area is elastic in the short and long term.
The efficiency of use of production factors for rice through mechanization in Sukoharjo
Authors: Suswadi  , Prasetyo Agung , Mahananto  , Astriyaningsih  
Published: June 2023

Abstract
Paddy was a staple food ingredient to produce rice. Rice contains nutrients for the human body as an energy source. Rice contains strengthening substances such as carbohydrates, protein, fat, crude fiber, ash, and vitamins. Sukoharjo Regency has implemented a corporate farming system since 2018. The level of use of the mechanization system of production factors was not yet known. The objective of this study was to know the level of efficiency of the use of the corporate farming system in the Sukoharjo Regency. The method of determining the location of the study uses a purposive. The method of determining the sample in this study is the purposive sampling method. That is, sampling from the population was done randomly without regard to the existing strata in the population. The results showed that The use of production factors in lowland rice farming had not reached the maximum efficiency level. The factors of production needed to increase their use were land area and organic fertilizer. In comparison, the inefficient factors were labor, seeds, urea fertilizer, sp36 fertilizer, spontaneous pesticides, and furadan pesticides, so their use does not need to be added.
Effect of packaging type on the quality of premix white bread based on modified rice flour
Authors: Duka Febby Suzanna , Rahman Andi Nur Faidah , Tahir Mulyati M , Langkong Jumriah , Jalaluddin  
Published: June 2023

Abstract
White bread premix flour based on modified rice flour is a practical food product that is safe, nutritious and has functional value. However, loss of nutritional components may occur during storage. In this study, premix flour was packaged in PP plastic, HDPE plastic and aluminum foil, and stored under controlled conditions at 30°C temperature and 75% relative humidity for 28 days. The content of carbohydrates, protein, fat, ash and water is regularly assessed. Flour packaged using aluminum foil showed the smallest percentage loss of nutritional components, namely 0.8% loss of carbohydrates, 75% protein loss, 13% fat loss, 4% loss of ash content and 49% increase in water content. Meanwhile, the highest percentage of nutrient loss in HDPE packaged premix flour is 10% carbohydrate loss, 91% protein loss, 45% fat loss, 8% loss of ash content and 56% increase in water content. This shows that the product quality is better maintained by using aluminum foil packaging.
The effect of stinky bean (Parkia speciosa) peel ethanolic extract to enhance superoxide dismutase (SOD) and reduce malondialdehyde (MDA) level of “jelantah” exposed rats
Authors: Nurdyansyah F , Widyastuti D A , Mandasari A A 
Published: June 2023

Abstract

“Jelantah” is cooking palm oil which is used repeatedly. Its daily use leads to enhancement of free radical level in the body. Free radical level should be lowered by a compound named antioxidant, either synthetic or natural antioxidant. This study aims to analyze the effect of P. speciosa peel ethanolic extract (PSPE) to superoxide dismutase (SOD) and malondialdehyde (MDA) level of jelantah exposed Rattus norvegicus (rats). The rats were divided into four groups. There were group I as a negative control (without jelantah and PSPE treatment), group II with 1 ml jelantah 118 mek/kg + 100 mg/kg body weight PSPE treatment, group III with 1 ml jelantah 118 mek/kg + 200 mg/kg body weight PSPE treatment, and group IV is a positive control (with 1 ml jelantah 118 mek/kg). The results showed that range of SOD and MDA level are 20.63-79.06 U/ml and 1.75-9.34 nmol/ml, respectively, with significantly different at α: 0.05. The negative control showed the highest SOD level and lowest MDA level because it was not treated with jelantah. On the other hand, the positive control showed the opposite because it was only treated with jelantah without addition of PSPE. Furthermore, the group III showed higher SOD and lower MDA level than group II. Those indicate that the higher PSPE concentration, the higher SOD level and the lower MDA level. SOD as an antioxidant has contrary level to MDA as free radical. PSPE showed a significant effect to the enhancement of SOD level and the reduction of MDA level in jelantah exposed rats.
Understanding the sensory profile of a traditional snack of Indonesia: Serabi
Authors: Fauza G , Astuti I , Muhammad D R A , Ishartani D , Ariviani S , Affandi D R , Prasetyo H 
Published: June 2023

Abstract

Serabi is Indonesian traditional food and has been widely known in Surakarta. However, its sensory profile has not yet been described. This study aims to characterize the sensory attributes of serabi products in Surakarta by combining quantitative descriptive analysis (QDA) and principal component analysis (PCA) methods. Ten samples of serabi produced by small medium enterprises (SMEs) in Surakarta were collected and evaluated. The sensory profile is categorized based on aroma, taste and texture. The focus group discussion (FGD) of eleven trained panellist agreed that the attributes of aroma are eggs, coconut milk, sweet, burnt and pandan leaf. Meanwhile the attributes of taste are coconut milk, sweet and salty, and softness, solid and crunchy particle, hardness, softness and creamy are the attributes of texture. The PCA result showed that two samples, J and I, were described as serabi that have intense burnt and hardness attributes while more shredded coconut texture were represented by sample H and A. Moreover, samples D, G, F fall in a quadrant that describes having dominant egg and flour taste, while the rest samples, E, C and B have more intense salty, sweet and pandan leaf aroma. This result can be used as a reference for describing the basic profile of traditional serabis in Surakarta.
Health of shallot bulbs planted with mycorrhizal applications and several types of mulch in moler disease conducive land
Authors: Supyani  , Poromarto SH , Supriyadi  , Utaminingsih R , Hadiwiyono  
Published: June 2023

Abstract
Moler is one of the important diseases of shallots caused by Fusarium oxysporum f.sp. cepae. Recently, it is very detrimental to one of the shallot production centers in Indonesia, namely Brebes, Central Java. The intensity and yield loss of this pathogen attack can exceed 60% and 50% respectively. Efforts to develop sustainable control are urgently carried out, such as the use of biological control agents and environmental management by using mulch. This paper reports on the health of shallot bulbs grown with the application of mycorrhiza and mulch. This research was conducted on shallot land conducive to moler disease, in Sidamulya, Wanasari District, Brebes Regency, Central Java with alluvial soil type. The results showed that the health Index of bulbs in the mycorrhizal treatment was 98.89%. In the combination treatment of mycorrhizae with some organic mulch, reached health index of shallot bulbs by 100%.
Relationship of weather factors on the progress of shallot moler disease in Brebes, Central Java in the rainy and dry seasons: intensity increases in humid and warm air
Authors: Widono S , Poromarto S H , Supyani  , Noviantoro W , Hadiwiyono  
Published: June 2023

Abstract
Shallots are one of the important commodities in Indonesia. One of the obstacles in the production of shallots is the existence of moler disease caused by Fusarium oxysporum f.sp. cepae (FOCe). This pathogen is capable of causing damage to crops and causing losses to crop failure. Changes in weather and global warming can affect the progress of the disease. This manuscript reports the results of observing the progress of moler disease in Brebes, Central Java, in two planting seasons of shallots, dry and rainy, in 2021. The results show that the progress of moler disease intensity in the rainy season is more conducive than in the dry season. Presumably, the factors of temperature and relative humidity of the air show the most influence on the progress of moler disease intensity compared to other weather factors such as rainfall and light intensity.
Optical non-volatile correction of SERS wavelength using optical pumping
Authors: Shameli Mohammad Ali , Eskandari Mohammad Reza , Safian Reza 
Published: June 2023

Abstract
In this paper, we propose a reconfigurable two-dimensional photonic crystal (PC) made from a new ultralow loss phase change material for detecting and imaging applications of surface-enhanced Raman scattering (SERS). The proposed all-dielectric structure is composed of identical holes periodically distributed on Sb2S3 as a substrate, tuned by optical pumping. The proposed PC is investigated using full-wave simulation of the CST with the finite-difference frequency domain method over a wide bandwidth of optical wavelengths. In this study, compensation for the error of the Fano resonance wavelength due to the fabrication process is realized through tuning optical pumping applied to the configuration. Also, the numerical results show the designed PC supports two high-quality Fano resonance modes, leading to uniform and high field enhancement with a SERS enhancement factor of 1.23 × 1012, which is significant for the application of SERS enhancement.