bluuebunny/crossref_metadata_2025_split huggingface dataset:
Optimizing novel perovskite Mg3AsBr3 through uniaxial stress: a comprehensive study of its potential in solar and optoelectronic applications
Authors: Chahar Sonia , Malan Chakshu , Mishra Krishna Kumar , Sharma Rajnish 
Published: August 2024

Abstract
This study presents a detailed investigation into optimizing the novel perovskite Mg3AsBr3 through uniaxial stress for enhanced performance in solar and optoelectronic applications. Using Density Functional Theory (DFT), we examined its structural, electronic, and optical properties under uniaxial stress from 0.5 to 5.0 GPa. Key findings include the tuning of the material’s bandgap from 1.485 eV (without stress) to an optimized range closer to 1.13581 eV under 5.0 GPa, demonstrating potential for improved solar cell efficiency. Our findings reveal a nuanced response of the material’s absorption coefficients at critical energies of 2.92 eV and 4.0 eV, where a descending trend with increasing pressure was observed, indicating a plateau at 1.5 GPa and an anomalous increase at 2.5 GPa. This behavior underscores the significance of stress between 2.5 GPa to 5.0 GPa in tailoring the optical responses essential for enhancing solar absorption efficiency in the ultraviolet to visible light range (300–800 nm). Notably, the dielectric constant increased gradually with stress, peaking at 6.003 under 0.5 GPa and slightly diminishing at 5.0 GPa, suggesting enhanced polarization and intrinsic response to electric fields under mechanical stress. Our research highlights the potential of stress engineering in optimizing perovskite materials for renewable energy applications, offering a pathway to high-efficiency, low-cost solar cells.
The interaction between filaments in dielectric barrier discharge excited by bipolar/unipolar nanosecond pulse powers
Authors: Fan Zhihui , Hou Jiaxun , Shan Ruikang , Yan Huijie , Wang Weiwei , Shi Ruili , Zhao Zhi , Liu Feng 
Published: August 2024

Abstract
This study investigates the behavior of discharge filaments in dielectric barrier discharges with a focus on the effects of nanosecond pulse voltage polarity. We observed significant repulsion between discharge filaments when the pin electrode was grounded in bipolar nanosecond pulse discharge. The tilt angle of the filaments was directly proportional to the peak current, which is indicative of charge density. When the bare pin electrode acted as an H.V. electrode, the repulsion phenomenon was diminished. Surface charges released through the bare pin electrode instead of accumulated on the dielectric surface accounts for this phenomenon. The study also highlights the impact of bipolar versus unipolar nanosecond pulse powers. The addition of a water resistor (WR) results in a slower falling edge of the pulse voltage and the absence of subsequent reverse discharges. The repulsion between filaments disappears both in pin-to-ground discharge and pin-to-H.V. discharge. The introduction of WR leads to a reduction of the current pulse’s duration and a premature termination of the discharge process, resulting the influence of surface charges on filament positioning negligible. It is hypothesized that the spatial distribution of ions does not exhibit significant repulsion, attributed to their substantial mass and sparse distribution in space.
Charge density wave transition and unusual resistance hysteresis in vanadium disulfide (1T-VS2) microflakes
Authors: Pal Samanta , Majhi Parushottam , Sau Jyotirmoy , Masanta Suvadip , Pal Prabir , Kumar Manoranjan , Singha Achintya , Babu P D , Ghosh Barnali , Raychaudhuri A K 
Published: August 2024

Abstract
We report existence of charge density wave (CDW) transition with unusual resistivity hysteresis in stable micro-flakes of 2D transition metal dichalcogenide (TMDC) vanadium disulfide (1T-VS2) as ascertained by structural studies, Raman spectroscopy, heat capacity, resistivity measurements and supported by phonon calculations based on density functional theory. The CDW transition occurs at around 296 K on cooling and manifests itself by the onset of resistivity with a negative temperature coefficient, which we identify as the transition temperature (TCDW). The transition is identified by a distinct peak in the heat capacity at T ≈ T

CDW
along with anomalies in temperature variation of the lattice parameters and complimentary signatures in electron diffraction and temperature-dependent Raman spectroscopy. The temperature-dependent resistivity measurements done with different ramp rates of cooling and heating show strong hysteresis and a low temperature relaxation pointing to the existence of metastable states below the transition. The Raman spectroscopy data show a hysteresis loop below the onset of the CDW transition. The phonon band structure calculations carried out on the 1T-VS2 system show the existence of the phonon mode softening along the diagonal of the Brillouin zone, which is pronounced near the transition temperature implying the prominent role of the mode softening as a driver of the transition. The results imply that the formation of CDW is sensitive to phonon mode softening rather than energy gap opening at the Fermi level.
Exact chirped solutions and chaotic behaviors of the high-order nonlinear Schrödinger equation with non-Kerr nonlinear terms and cubic-quintic-septic nonlinearities
Authors: Li Guangjin 
Published: August 2024

Abstract
In this paper, we obtain the exact chirped solutions and corresponding nonlinear chirps of the high-order nonlinear Schrödinger equation with non-Kerr nonlinear terms and cubic-quintic-septic nonlinearities based on the trial equation method and the complete discrimination system for polynomial. Specifically, we systematically solve all exact chirped solutions of the equation in its general form. Moreover, we discuss the chaotic behaviors of the model while considering the external perturbation terms.
Spatial electron-spin splitting in single-layered semiconductor microstructure modulated by Dresselhaus spin–orbit coupling
Authors: Chen 陈 Jia-Li 嘉丽 , Chen 陈 Sai-Yan 赛艳 , Wen 温 Li 丽 , Cao 曹 Xue-Li 雪丽 , Lu 卢 Mao-Wang 卯旺 
Published: August 2024

Abstract
Combining theory and computation, we explore the Goos–Hänchen (GH) effect for electrons in a single-layered semiconductor microstructure (SLSM) modulated by Dresselhaus spin–orbit coupling (SOC). GH displacement depends on electron spins thanks to Dresselhaus SOC, therefore electron spins can be separated from the space domain and spin-polarized electrons in semiconductors can be realized. Both the magnitude and sign of the spin polarization ratio change with the electron energy, in-plane wave vector, strain engineering and semiconductor layer thickness. The spin polarization ratio approaches a maximum at resonance; however, no electron-spin polarization occurs in the SLSM for a zero in-plane wave vector. More importantly, the spin polarization ratio can be manipulated by strain engineering or semiconductor layer thickness, giving rise to a controllable spatial electron-spin splitter in the field of semiconductor spintronics.
Control of a solid fuel rocket using Artificial Intelligence
Authors: Carrillo Abel , Gutíerrez-Frías O , Mata Félix 
Published: August 2024

Abstract
This work is about the application of a trajectory control system for a solid-fueled sounding rocket using Neural Networks. The first part consisted of searching for a mathematical model that described the rocket’s behavior in space as accurately as possible. After this, the LQR (Linear Quadratic Regulator) methodology was used to find the control gains ’k’ for subsequent use. Trajectories are proposed for servo motor tracking, to be able to follow a proposed path in the x-z plane.
Computer Vision Implementation in Computerized Telescope as a Fine Pointing Mechanism
Authors: Medina I. , Lucena A. J. , Castillo M. , Domínguez L. G. 
Published: August 2024

Abstract
Optical satellite communication researches have been increasing in recent years. The continuous miniaturization of components, as well as the need for higher bandwidths, has led to higher frequency applications and narrower beams. For these technologies to work properly, it is needed to achieve a precise line-of-sight between transmitters and receivers, thus a strict pointing system. This research shows the use of computer vision as a microradian fine pointing mechanism to achieve the tracking and detection of objects in distances of around 300 m. As a demonstration of the computer vision algorithm, a drone is tracked and correctly detected by a computer, using a computerized telescope as the optical ground station.
Homomorphic encryption of the k=2 Bernstein–Vazirani algorithm
Authors: Fernández Pablo , Martin-Delgado Miguel A 
Published: August 2024

Abstract
We introduce a class of circuits that solve a particular case of the Bernstein–Vazirani recursive problem for second-level recursion. This class of circuits allows for the implementation of the oracle using a number of T-gates that grows linearly with the number of qubits in the problem. We find an application of this scheme to quantum homomorphic encryption (QHE), which is an important cryptographic technology useful for delegated quantum computing, allowing a remote server to perform quantum computations on encrypted quantum data, so that the server cannot know anything about the client’s data. Liang’s QHE schemes are suitable for circuits with a polynomial number of gates

T

/

T

†

. Thus, the simplified circuits we have constructed can be evaluated homomorphically in an efficient manner.
Strategy to increase melon (Cucumis melo L.) growth and yield hydroponically with types of installation and number of fruit per plant in the greenhouse
Authors: Syah R F , Parwati W D U , Sinambela G P 
Published: August 2024

AbstractHydroponic cultivation was a modern technology in the field of agriculture, especially horticultural crops. Planting premium melons using a hydroponic system was clearly more profitable, compared to growing melons conventionally. In terms of price or also in terms of care and market share, hydroponic melons were far superior. This research was to determine the growth and yield of hydroponic melons in various installations with different numbers of fruit. This research used a factorial experimental method, in a Randomized Completely Block Design. The first factor was the type of installation which consisted of 3 levels: drip irrigation (T1), Nutrient Film Technique (NFT) (T2), and floating raft (T3). The second factor was the number of fruit per plant consisting of 3 levels: 1 fruit (B1), 2 pieces (B2), and 3 pieces (B3). Results showed that there was a real interaction between the type of installation and the number of fruits per plant in the parameters; fresh weight (618.6 g), dry weight (90.0 g), and fruit sweetness level (13.8 brix). The treatment of installation types had a significantly different effect on the parameters of plant height, fruit diameter, and fruit weight. Hydroponic melon cultivation with one fruit per plant was the best for the number of leaves, fresh weight, fruit brix, fruit diameter, and fruit weight. Drip irrigation with one fruit per plant was recommendable.
Yield, milling quality, rice quality and preferences of superior and specific location rice varieties
Authors: Yustina I , Rachmawati D , Aziz F N , Setiasih  , Nirmalasari S , Baswarsiati  
Published: August 2024

Abstract
Grain and rice characteristics are a description of the post-harvest quality of rice which is a consideration for farmers, traders, and consumers in choosing rice to be developed and consumed. This study aims to determine the yield, milling quality, rice quality and preference of 5 rice varieties in Indonesia, they were Inpari 32 HDB, Inpari 42 Agritan GSR, Inpari 45 Dirgahayu, Pamelen and Inpari IR Nutri Zinc. The study used a non-factorial Randomized Group Design, rice varieties as treatments, 5 replications. Rice was harvested using 2 methods, namely sickle (manual harvesting) and combine harvester. Determination of Milling Quality, rough rice was milled using a mini electric grain whitener LTJM-2008 then measured the percentage of hulled rice, unhulled rice, bran, and husk. Determination of rice quality, 25 grams of rice samples were sorted manually and measured the percentage of head rice, broken, groats and damaged then determined the grade of rice based on SNI 6128: 2015. The results showed that the rice yield manually and using a combine harvester was different from the potential yield. The milling quality and rice quality of each variety were significantly different (p=0.05%). Rice quality classification based on SNI 6128:2015 shows that Inpari 42 Agritan GSR and Inpari IR Nutri Zinc was included in Medium I, pamelen and Inpari 32 HDB were included in Medium II, and Inpari 45 Dirgahayu was under Medium III. Inpari 32 HDB was the rice variety with the highest preference.
Whey edible film enhanced with ginger essential oil: characterization and antimicrobial activity
Authors: Pratiwi D , Saputri R A , Setiyawan A I 
Published: August 2024

Abstract
Antimicrobial edible films made from whey and ginger essential oil extend the shelf life of packed goods by reducing, preventing, or delaying the growth of germs that may be found in the packaging of food or materials. This research aims to develop a film using whey and ginger essential oil film, focusing on properties such as thickness, solubility, elongation, tensile strength, water vapor transfer rate (WVTR), microstructure, color measurement, and antibacterial properties of ginger essential oil, and its ability to inhibit pathogenic microorganisms. An experimental study was conducted to analyze the physical and antibacterial characteristic of edible film, utilizing a randomized design with four different treatments. The film was made with 7% whey protein concentrate (WPC), 0.28% tapioca starch, and various amount of ginger essential oil (C0: 0% ginger essential oil, C1: 0.1% ginger essential oil, C2: 0.3% ginger essential oil, C3: 0.5% ginger essential oil). The concentration of ginger essential oil affected the tensile strength, WVTR, and microbial inhibitory action. Based on all characteristics, the optimal treatment is 0.5% GEO concentration, with a thickness of 0.12 ± 0.01 mm, solubility 3.67 ± 0.58%, elongation of 4.35 ± 0.66 %, tensile strength of 2.72 ± 0.38N, WVTR 14.67 ± 0.33 g/m2.day−1 and Escherichia coli and Staphylococcus aureus inhibition. According to the findings, including ginger essential oil can potentially increase the antibacterial characteristics of whey edible film composites.
Exploring the potential of dwarf coconut: physicochemical properties and sensory evaluation of several coconut varieties
Authors: Wungkana J , Son R H , Jonathan S R , Indrata M , Liwu S L , Muzaiyanah S , Rindengan B 
Published: August 2024

Abstract
Dwarf coconut has not been widely used in many products as much as the tall varieties. In this research, dwarf coconut water was the subject of the research to elevate its economic value. Four different varieties of coconut, namely Nias Yellow Dwarf (NWD), Mapanget Tall (MT), Tebing Tinggi Dwarf (TTD), and Khina, were evaluated for their 9-month-old fruits regarding their physical characteristics, water volume, pH, Brix, and sensory evaluation. Overall, there were several attribute differences among those varieties, especially, between tall and dwarf coconuts. NYD and Khina have the highest overall likeness rating for their water. They were also highly rated for their sweetness attribute which could be provided by the relatively high content of sugar and amino acids in the waters. Nonetheless, the meats of all coconuts scored a medium rating in all attributes. In conclusion, NYD and Khina were recommended to be used in coconut water drink production. These findings may benefit coconut-based-beverage producer by giving unique characteristics to their product.
The physical characteristics of jelly drink bay leaf water extract with guava juice combination
Authors: Putri S , Marliyati S A , Setiawan B , Rimbawan R 
Published: August 2024

Abstract
Developing a jelly drink with bay leaf water extract with guava juice combined with konjac glucomannan can improve the physical characteristics of the jelly drink. This study compared the physical properties of the guava juice and bay leaf water extract jelly drink in terms of color, total soluble solids, and viscosity. One-way ANOVA analysis was used to design the study as a completely randomized design (CRD), and the Duncan Multiple Range Test (DMRT) was then conducted. The treatment comprises of two repetitions divided into three groups, each with a ratio of 25:75 (P1), 50:50 (P2), and 75:25 (P3) for the combination of guava juice and bay leaf water extract. The results showed that the physical characteristics (color (a*, b*, C*, and h*), viscosity, and total soluble solids) were significantly different (p<0.05). Based on the results of this study, the proportion of bay leaf water extract and guava juice significantly influenced the physical characteristics of the jelly drink. Therefore, the jelly drink bay leaf water extract guava juice combination has a good potential for incorporation into functional drinks.
Characteristics of Indonesian traditional food “Ayam Taliwang” and “Sate Rembiga” packed by retort process: F0 - value, metal contamination and microbial analysis
Authors: Nurhikmat A , Kusumaningrum A , Amdani R Z , Siswanto N , Kobarsih M , Dameswari A H , Siswoprayogi  
Published: August 2024

Abstract
“Ayam Taliwang” and “Sate Rembiga” are traditional foods from Mataram, West Nusa Tenggara, Indonesia with meat-based ingredients and have a short shelf life. In this study, the packaging of ready-to-eat food products with a retort process to increase shelf life was explored. The main objective of this study was to identify the packaging results of Indonesian traditional food “Ayam Taliwang” and “Sate Rembiga” by retort process, including parameters of Lethality value (F0 -value), metal contamination and microbial analysis. The procedure of this study was that the food samples were packed in aluminum foil, then vacuum sealed and processed in a retort. The retort processing temperature and time used were 121°C and 20 minutes. The results showed that the F0-value for “Ayam Taliwang” was 19.62 minutes, while the F0-value for “Sate Rembiga” was 30.32 minutes. Metal contamination test results for “Ayam Taliwang” showed that Plumbum (Pb) was 0.531 ppm, Cadmium (Cd) 0.0047 ppm and Arsenic (As) 0.0317 ppm, while Mercury (Hg) and Lead (Sn) were not detected. The metal contamination test for “Sate Rembiga” was Cd 0.0013 ppm, As 0.0104 ppm and Sn 1.1621 ppm, while Pb and Hg were not detected. Microbial contamination test results for “Ayam Taliwang” showed that Staphylococcus aureus and Clostridium perfringens were 10 colonies/gr, Enterobateriaceae were 10 colonies/gr, while Salmonella and Lysteria monocytegens were negative. “Sate Rembiga”, Staphylococcus aureus and Clostridium perfringens were found at 102 colonies/gr, while Enterobateriaceae, Salmonella and Lysteria monocytegens were negative. Therefore, ready-to-eat “Ayam Taliwang” and “Sate Rembiga” meet the requirements for distribution using the retort process.
Partial purification and pectinase activity of lactic acid bacteria and pectinolytic bacteria consortium
Authors: Purwanto E H , Frediansyah A , Fitrianto N , Palindung L S , Marwati T , Santoso T J , Susilawati L , Khodija S , Rachmawati F , Wibowo N A 
Published: August 2024

Abstract
Pectinase is an enzyme that can degrade pectin and often applied to the food industry. Microbes predominantly produce pectinases. This study aims to obtain the partial pectinase enzyme activity of bacteria from Liberica coffee fermentation. Lactic acid bacteria (LAB) isolates and pectinolytic bacteria were tested qualitatively to determine their pectinolytic activity. The highest pectinolytic activity will be used as a consortium. Optimal growth of lactic acid bacteria consortium and pectinolytic bacteria consortium incubation results were centrifuged to obtain enzyme extracts. The pectinase enzyme extract was partially purified by ammonium sulfate precipitation and dialysis. Based on the analysis, the qualitative index of pectinolytic lactic acid bacteria with isolate code BAL 1, BAL 2, and BAL 3 was 3,62%, 5,17%, and 7,27%, respectively. In pectinolytic bacteria, the qualitative index of pectinolytic with isolate codes IF, 2C, and 3S was 14.56%, 6.26%, 6.74%. Precipitation 70% ammonium sulfate has the highest enzyme-specific activity.
Characteristics of antioxidant activity of functional drinks from kebo rubber leaf extract and lemongrass extract
Authors: Oktavianty H , Darmawan A S , Keviana A 
Published: August 2024

Abstract
The rubber plant (Ficus Elastica L.) is an ornamental plant that is rarely used for consumption. This research aims to determine the characteristics of the antioxidant activity of functional drinks from rubber leaf extract and lemongrass extract. The research method used the Randomized Complete Block with two factors i.e., the ratio of rubber leaf extract and lemongrass extract (70%:30% w/w; 50%:50% w/w; 30%:70% w/w), and the ratio of stevia solution and sugar solution (0:100%; 50%:50%; 100%:0), that had 2 repetitions and resulted in 18 samples of experimental. Then the results were tested its antioxidant activities using the DPPH method and tannin analysis. The best result for antioxidant activity was obtained by the H1T3 sample with an IC50 value is 12.41 ppm, flavonoid content is 10.99% and tannin content is 2.86%. From the parameter results, the functional drinks of rubber leaf extract and lemongrass extract have the potential to contain a very strong antioxidant activity.
Effect of aqueous extraction method on total water-soluble polysaccharides content and phytochemical properties of white oyster mushroom (Pleurotus ostreatus)
Authors: Rosyida V T , Hayati S N , Wiyono T , Darsih C , Ratih D 
Published: August 2024

Abstract
White oyster mushroom (Pleurotus ostreatus) is an important raw material for nutraceuticals because it contains various bioactive substances, including polysaccharides, vitamins, phenolic acids, terpenoids, and sterols. P. ostreatus mushroom polysaccharides possess diverse biological activities (antioxidant, hyperglycemic effects, and immunomodulatory). The extraction process impacts the yield, affecting the biological function of natural active ingredients. In this study, aqueous extraction methods, i.e., ultrasonic-assisted extraction (UAE), microwave-assisted extraction (MAE), and kinetic-assisted hot extraction (KAHE), were applied to investigate the impact of extraction methods on polysaccharides crude extract from the fruiting bodies of P. ostreatus mushroom and their phytochemical properties. Water-soluble polysaccharides content, total polyphenolic content, total terpenoid content, and antioxidant level were analyzed using the spectrophotometric method by phenol-sulfuric acid, Follin-Ciocalteau’s reagent, vanillin-perchloric acid, and 1,2-diphenyl-2-picrylhydrazyl (DPPH) scavenging assay, respectively. After the extraction process, the morphological alterations on the surface of mushroom residues were observed using Scanning Electron Microscopy (SEM). The investigation has shown that aqueous extraction methods significantly affect the yields of polysaccharides crude extract and other phytochemical properties, i.e., total phenolic content, terpenoid content, and the DPPH free radical scavenging activity. The sample from MAE had the highest total water-soluble polysaccharide content (61,73±1,35% w/w DW) and the highest total phenolic content (3,44±0,75 %w/w DW). MAE method has the best potential and efficiency compared to UAE and KAHE for extracting polysaccharides while maintaining their phytochemical properties.