bluuebunny/crossref_metadata_2025 huggingface dataset:
Design and Control of a Tara Flour Processing Machine in Ayacucho – Peru, 2023
Authors: Asparrin-Pariona David , Yelsin Ramos-Nahuin Omar , Carlos Barreto-Barreto Jhan , Michael Beraun-Espiritu Manuel , Alberto Coaquira-Rojo Carlos , Andre Beraun-Arroyo Ethan
Published: December 2023

This article proposes the design and control of a Tara flour processing machine with the aim of increasing profitability and reducing the time required for its processing. The research presents a mechatronic system composed of two main systems: one mechanical and the other electrical-electronic. The mechanical system consists of three parts. In the first part, the feeding and dosing is carried out, where the Tara is filled and shelled. In the second part, there is the shaking process, which consists of separating the seeds from the shell. The third part refers to the grinding of the Tara, thus obtaining the final product: flour. The electric-electronic system incorporates an AtMega 328P microcontroller to regulate the speeds of the motors based on the readings of the sensors used for proper processing. The implementation of this project would reduce the production time of Tara flour in the city of Ayacucho by 75% compared to the traditional method. This demonstrates the possibility of improving the production process of Tara flour.
Optimization of Material Composition and Compression Molding Process Parameters to Maximize Mechanical Properties of Recycled Polypropylene (r-PP) Composite Reinforced with Ironwood Powder
Authors: Prananda Rizky , Widiastuti Indah , Estriyanto Yuyun
Published: December 2023

It could potentially be possible to create more sustainable materials by using wood waste as reinforcement in recycled polymer material. This study aims to optimize material composition and compression molding parameters to maximize the mechanical properties of recycled polypropylene composites reinforced with ironwood powder using the Taguchi orthogonal L9 design of experiment. The composites were manufactured in two-step extrusion and compression molding. The parameter levels used in this study are ironwood loading of 10%, 20%, and 30% with the addition of three different levels of coupling agent and manufactured using the molding temperature of 165℃, 175℃, 185℃ as well as pressure holding time of 3 minutes, 6 minutes, and 9 minutes. Tensile testing was conducted in accordance with ASTM D 638 type V standard. The S/N ratio analysis revealed different optimum parameters for tensile strength and elastic modulus. Therefore, the grey relation analysis was performed. It was found that the optimum composition and parameter variation for tensile strength and elastic modulus are 10% mass fraction of ironwood, 3% of MAPP, molding temperature of 165℃, and pressure holding time of 9 minutes. The ANOVA indicated wood powder loading as the most significant parameter on the mechanical properties of the composite. The material composed of recycled polypropylene and waste of ironwood can be considered a promising sustainable material for engineering-related applications.
Unlocking the Wave's Potential: Dynamic Numeric Simulation Response of Hexagon Buoy and Ring Heave Plate in a Shared Wave Environment
Authors: Sasmito Hadi Eko , Samuel S. , Trimulyono Andi , Caesar Raaflie , Al-haq Ash-shaleh Zia
Published: December 2023

Wave electricity extraction technology in advanced international locations holds to advance. One of the strategies used is a point absorber, which extracts electricity from the response of its system. The essential machine includes a floating buoy and a response management tool referred to as a heave plate. This look discusses the impact of the heave plate's floor location variant at the hydrodynamic parameters of a hexagonal-fashioned buoy (heave and pitch Response Amplitude Operator (RAO), brought mass, and radiation damping). The evaluation changed into performed the usage of the industrial software program ANSYS AQWA. The effects of the evaluation display that the presence of the heave plate at the buoy version affects the RAO values, mainly for the heave and pitch modes. Increasing the ratio of the heave plate's floor location results in a growth withinside the RAO heave price however decreases the RAO pitch price. Additionally, the presence of the heave plate influences the values of brought mass and radiation damping. The maximum ratio of heave plate location effects withinside the maximum brought mass price. This price gradually decreases because the ratio of the heave plate location decreases, and the buoy without a heave plate has the bottom price. This is reversed for the radiation damping price, wherein the best heave plate ratio corresponds to the bottom damping price. The damping price will gradually increase because the heave plate ratio decreases, with the buoy without a heave plate having the best price. The presence of the heave plate in the buoy model influences the RAO values, particularly in the observed motion modes of heave and pitch.
Analyzing the Influence of Water Depth on Total Resistance in Ulstein X-Bow Configuration: A Numerical Study
Authors: Samuel S , Simanjuntak Frans , M anik Parlindungan , Sasmito Hadi Eko , Iqbal Muhammad , Aji Kurniawan Wahyu , Kadek Vidya Saathya Dewantari Dinda Widhi Ni , Ariffinal Chaniago Muhammad
Published: December 2023

Considering resistance is a vital factor during ship design, especially when the vessel navigates through shallow waters. This situation leads to increased hull pressure as the ship advances. The ship can increase sinkage and trim, affecting the total drag of the vessel. It is important to predict resistance in water conditions with different surface heights accurately. This study aims to analyze the resistance at sea level. Testing the X-bow shape on the bow is predicted to affect the resistance analysis results. This study predicts ship resistance using the overset mesh technique in the Computational Fluid Dynamics method. According to the study's findings, utilising Ulstein X-Bow in deep water may reduce the total resistance value by 4.85%, followed by a change in sinkage angle by 2.32% and trim by 0.40%. Unfavourable outcomes are shown by the overall resistance value in moderate shallow water situations, and this happens as a result of the squat phenomenon, which is caused by a drop in pressure along the ship's bottom interacting with the water.
Polystyrene Waste Recycling Process as an Alternative Antistatic Packaging Raw Material
Authors: Nur Shohih Esa , Kaavessina Mujtahid , Distantina Sperisa , Harjanto Radita , Khairani Saudia Nabila
Published: December 2023

Composite synthesis from styrofoam (polystyrene-based) was carried out by solvent blending method in which the solvent used was gasoline. The carbon black (CB) was used as filler comes from coconut shells. The samples were given a variation of filler composition: 0, 1, 3, and 5% of the total weight of the composite to be formed. In this method, stirring was carried out for at least 120 minutes (200 rpm in atmospheric conditions). The stirring process is carried out until the mixture becomes homogeneous, as indicated by the slurry formation. After that, the process continues to the printing stage using glass mold and drying in a windy room that is sufficiently exposed to sunlight for 3 days. The sample obtained is a composite measuring 8 cm x 8 cm. The tests carried out were the ATR-FTIR, SEM, conductivity, and mechanical tests. From the results of the ATR-FTIR test, there was no visible difference between the styrofoam before being treated with the composites, thus proving that the solvent had evaporated. The results of the SEM test show that there are lumps in the sample with higher filler concentrations, so it is possible to need additional time or stirring speed to distributed the filler evenly. Meanwhile, the conductivity test proved that the addition of carbon-based filler could increase the conductivity of the composites.
An Integrated Inventory Model for Distributor - Retailer Considering Transportation, Loading-Unloading, and Carbon Tax
Authors: Anggita Rahma Faza , Jauhari Wakhid Ahmad , Rosyidi Cucuk Nur
Published: December 2023

This paper proposes an integrated inventory model for a single distributor and a single retailer under stochastic demand and periodic review policy. The implementation of a carbon tax policy aims to reduce emissions from transportation, loading-unloading, and storage activities. To lessen the emissions from the operations, we proposed a model using electric equipment (i.e., truck and forklift) to evaluate the long-term impact of the operation cost and sustainability of the forklift and truck by comparing the electric and diesel equipment. This study utilizes the joint economic lot size (JELS) approach to minimize the joint total cost while taking ecological considerations into account. A proper solution algorithm is developed to find the optimal decision variables (review period, number of shipments, and safety factor), which minimize the joint total cost. The results show that electric equipment can reduce emissions and fossil fuel consumption as well as expenses incurred by both parties.
Design of a Honey Pasteurization Machine Based on Touch Screen User Interface to Control Honey Content Using the Pugh Method
Authors: Wira Raffly , Herdiman Lobes , Priadythama Ilham
Published: December 2023

Pasteurization of honey in Honey Small and Medium Enterprises (SMEs) is generally carried out by conventional methods through a thermal process. This method has risks because heating of more than 75°C causes nutritional degradation of the quality of honey. Non-thermal pasteurization is an alternative to the thermal method, although it does not use temperature to deactivate microbes. Based on several studies, PEF technology is a sustainable food processing, ensuring microbial stability with lower treatment temperatures and minimal side effects. LPPD UNS has developed a hone pasteurization machine but due to the long operating time, this developed engine experienced process instability. Therefore, the design of a pasteurization machine using PEF technology for further development is important. This research aims to redesign the pasteurization machine using PEF technology to provide significant value that UI design and systems are considered through several criteria. The emergence of several alternative development redesigns for pasteurization machines. it is necessary to select alternative designs using Pugh's method. The results of the design, the machine is designed with a stirring speed of 20rpm, 25rpm, and 30rpm and the PEF intensity of 25kV, 30kV, and 35kV. Modification of this design is expected so that process instability can be resolved and proper treatment can be obtained in the honey pasteurization process.
Top-K Query for Large Dataset of Restaurant Review Based-on Hadoop MapReduce Framework
Authors: Nyoman Putri Utami Ni , Wijayanto Heri , Gede Putu Wirarama I.
Published: December 2023

In order to develop post-COVID-19 culinary tourism, high-quality facilities and services are essential. Information technology can contribute through a top-k query-based decision-making system. This study implements top-k queries on a distributed Hadoop MapReduce system to evaluate its capability in managing data and selecting culinary tourism potential. Research findings indicate that for the European restaurant data from TripAdvisor with 5 dimensions, both single-node and multi-node (3 nodes) executions exhibit comparable execution times across various data quantities. Conversely, for the European restaurant data from TripAdvisor with 14 dimensions, the use of multi-node (3 nodes) tends to result in longer execution times compared to the single-node approach for larger data quantities. Furthermore, the utilization of multi-node (3 nodes) proves to be more efficient in processing synthetic data with 5 dimensions as the data quantity increases, demonstrating a significant difference in execution times compared to the single-node approach. The study also reveals that across different dimensions, the multi-node (3 nodes) approach generally outperforms the single-node approach in terms of speed. Regarding node variations, processing 20 million data points with 5 dimensions using 6 nodes yields the optimal method with the shortest execution time. By leveraging information technology and a top-k query-based decision-making system, the development of culinary tourism potential can be conducted more efficiently and effectively. The performance of MapReduce in processing culinary tourism potential data can be optimized by employing multi-node execution for large datasets and single-node execution for relatively smaller datasets.
Six Sigma Implementation on Wash Motor Twin Tub Washing Machine: A Case Study
Authors: Putri Vara Afifa Erysa , Wulan Damayanti Retno
Published: December 2023

The competition of electronics and household industry in Indonesia is very tight, thus encouraging the industries to be more creative and innovative to attract customers. PT XYZ as a company that produces washing machines, especially twin tub washing machine, often experiences problems related to the quality of its constituent parts. Part refers to products manufactured by the supplier. One of them is wash motor, which still many of line drops in production line. Based on the calculation of the average DPMO (Defects per Million Opportunities) and the average sigma value in January 2023 were 251.69 and 4.99. This shows that the sigma level value of the company is between levels 4 and 5 which is in the position of the US industry average. The aim of this study is to reduce the number of defects in twin tub washing machine production using Six Sigma method through the Define, Measure, Analyze, Improve, and Control (DMAIC) phases. The results show that there are four dominant types of defects, namely rivet loose, rusty, noise, and no function. Five-M checklist determines suggested improvements based on man, machine, method, material, and environment factors. The Six Sigma approach has the opportunity to be used to support quality control activities to overcome defects that appear on wash motor and to improve product quality in washing machine factories by providing alternative approaches to suppliers.
Design Optimization of Standalone PV-Battery System for LED Street Lighting in Magetan Indonesia
Authors: Warindi D. , Nizam Muhammad , Adriyanto Feri , Anwar Miftahul , Ramelan Agus , Saputro Joko Slamet , Inayati I.
Published: December 2023

The study focuses on optimizing standalone PV-battery systems for LED street lighting in Magetan Regency, Indonesia, emphasizing the importance of PV panels and lithium battery selection for energy efficiency. Minimizing energy not captured leads to effective, sustainable, and eco-friendly street lighting, reducing energy waste and promoting a greener urban environment. The optimization process involves choosing the appropriate PV panel size, battery capacity, and solar charge controller to maximize energy capture while meeting load requirements and design constraints. Solar resource assessment using PVGIS ensures system feasibility analysis. Simulation results reveal optimized PV panel peak power (200 Wp), battery capacity (1002 Wh), and a 16.67A MPPT solar charge controller. The average energy not captured is 144.21 Wh per month, showcasing the system’s efficiency. The discussion emphasizes the significance of this optimized configuration in enhancing energy capture and storage capacity, resulting in reliable and eco-friendly street lighting solutions.
Microwave Non-destructive Technique using a Double-ring Resonator for Classification of Transparent Flesh and Yellow gum Mangosteens
Authors: Mustiko Okta Muvianto Cahyo , Yuniarto Kurniawan , Ariessaputra Suthami , Maryanto Al Sasongko Sudi , Darmawan Budi , Ch Syafaruddin
Published: December 2023

One of the most important agricultural commodities exported from Indonesia is mangosteen. Mangosteens are not always fruits without flaws, in any case. To categorize the quality of mangosteen fruits, farmers employ human eyesight. As a result, this data can be unreliable and erroneous after harvesting. Both internal and exterior flaws are possible. Some spots include improper form, a hardening pericarp, yellow gumming, or transparent flesh. Often, the longest part, the translucent skin, might be difficult to see. Treatment for these disorders must be non-invasive and nondestructive. In this essay, a double-ring microstrip resonator modification is suggested and examined. The mangosteen fruits were measured using the resonator and divided into three groups. Ordinary, transparent flesh and yellow gumming are the classifications. 1.4 GHz is the resonator's operating frequency. By detecting the return loss value and the S21 value at a frequency between 100 MHz and 3 GHz, the sensor ascertains the dielectric value of each mangosteen fruit. At frequencies of 1.15 GHz-1.28 GHz and 1.42 GHz-1.52 GHz, and with dielectric constants between 2.98 and 3.28, there is a variation in permittivity values between the categories of regular, clear, and yellow mangosteen.
Landing Pad Detection and Computing Direction of Motion for Autonomous Precision Landing Quadcopter
Authors: Hariyono Joko , Slamet Saputro Joko , Rahutomo Faisal , Sutrisno  , Eko Sulistyo Meiyanto , Pramono Subuh , Hamka Ibrahim Muhammad
Published: December 2023

This paper presents an algorithm for an autonomous quadcopter to perform autonomous precision landing. This research focuses on designing the quadcopter so that it can land precisely on the landing pad using image processing algorithms. First, the captured image will be converted to grayscale, then the thresholding method is carried out and followed by a morphological process to eliminate noise and produce a clear image. The detected image will be displayed in a frame that will calculate the distance to the middle point. It will be used as Pulse Width Modulation (PWM) input to adjust the direction of motion of the quadcopter. so that it can land autonomously. The algorithm was tested in several color pads which are located in the grass, sand and cluttered ground. Testing is carried out to test the accuracy and precision of the designed algorithm. The results of the experiment show an accuracy rate of 94.76% and a precision level of 96.59% with an average landing time of 19 seconds and an average detection time is 8.55 milliseconds.
Design of Unmaned Surfaces Vehicle System Based on Coordinates and Internet of Things for Semi Automatic Shrimp Feeding
Authors: Adriyanto Feri , Zainizan Sahdan Mohd , Hasya Nurfaiz Muhammad , Haryono Joko
Published: December 2023

This research develops an automatic feeder vessel for catfish farming. The aim is to increase the efficiency of feeding. In trials, the ship produced 113 grams of feed in 10 seconds and 716 grams in 60 seconds. Ship speed and radius affect GPS accuracy. The implementation of automatic feeding vessels in ponds worked well, following routes, providing feed according to the program, and transmitting data via IoT. This research contributes to overcoming the problem of equal distribution of feed in catfish farming with automatic feeders to increase the efficiency and productivity of aquaculture.
Des chauves-souris et des virus
Authors: Perrot Juliette , Dacheux Laurent
Published: December 2023

Durant les dernières décennies, les chauves-souris ont été associées à de nombreuses pandémies virales. Ces animaux hébergent en effet une diversité importante de virus, certains à potentiel zoonotique pour l’homme. Alors que ces virus peuvent être mortels chez d’autres mammifères, les chauves-souris sont souvent infectées de façon asymptomatique. La mise en place d’une réponse immunitaire équilibrée leur permettrait de maintenir l’homéostasie lors de l’infection, en limitant la réplication virale tout en évitant l’impact d’une inflammation trop importante. Le décryptage de ces mécanismes, à l’aide de modèles in vitro adaptés, devrait contribuer à évaluer et à éviter le risque zoonotique potentiel de ces animaux, tout en ouvrant la voie au développement de thérapeutiques pour les maladies infectieuses et inflammatoires.
Right Atrium Primary Cardiac Lymphoma Causing Heart Failure
Authors: Doño Angel , Lounsbury Cassidy , Garrett Harvey Edward
Published: December 2023

Background Patients with primary cardiac tumors may present with symptoms based on the size and location of the tumor. Symptoms may include congestive heart failure secondary to intracardiac obstruction, systemic embolization, arrhythmias, and constitutional symptoms.

Case Description A patient presented with new onset atrial fibrillation and heart failure. Workup including open surgery revealed a primary cardiac lymphoma.

Conclusion Cardiac tumors present with a variety of symptoms and are best evaluated by echocardiogram, computed tomography angiography, and magnetic resonance imaging. Tissue diagnosis is necessary. Although primary cardiac lymphoma is rare, long-term survival after chemotherapy and rituximab is superior to other cardiac malignancies.
Review of Australia’s funding commitments for suicide prevention from 2021–22 to 2026–27
Authors: Hu Di , Comben Charlotte , Diminic Sandra , Pagliaro Claudia
Published: December 2023

Objective Examine the distribution of funding for suicide prevention in Australia from 2021–22 to 2026–27. Methods Government websites were reviewed to locate budget documents related to suicide prevention funding. Information was extracted on the program/service to be funded, and the funder entity, duration, and year allocation. Extracted data was reviewed to identify commonly targeted sub-populations. Results The majority of suicide prevention-related funding was allocated to aftercare for persons who have attempted suicide, consistent with the effectiveness of these services, followed by programs targeting the general population. Little funding was allocated to other specific sub-populations, such as young people and Aboriginal and Torres Strait Islander peoples. The amount of funding allocated to suicide prevention varied across jurisdictions, which is only partially explained by suicide rates. Conclusions There is a need for greater investment in care for specific sub-populations who are at higher risk of suicide. This study provides a baseline for comparing future investments in suicide prevention in Australia.
Recent Advances in Animal Nutrition – Australia 2023
Authors: Cowley Frances C.
Published: December 2023

The Biennial Conference of Recent Advances in Animal Nutrition – Australia was held on 27–28 July 2023. The special issue contains latest research in the field of animal nutrition across the most economically significant animal species, including poultry, pigs, sheep, cattle, companion animals and aquaculture.
Calibrated weighted permutation test detects ancient language connections in the Circumpolar area
(Chukotian-Nivkh and Yukaghir-Samoyedic)*
Authors: Kassian Alexei S. , Starostin George , Zhivlov Mikhail , Spirin Sergey A.
Published: December 2023

Relationships between universally recognized language families represent a hotly debated topic in historical
linguistics, and the same is true for correlation between signals of genetic and linguistic relatedness. We developed a weighted
permutation test which represents the classical permutation tests with weights introduced for individual Swadesh concepts
according to their typological stability. Further, the obtained values were calibrated on a negative control group to override
non-uniform distribution of phonemes within the Swadesh wordlist. We applied the calibrated permutation test to the basic
vocabularies of nine languages and reconstructed proto-languages to show that three groups of circumpolar language families in the
Northern Hemisphere show evidence of relationship through common descent or borrowing in the basic vocabulary:
[Chukotko-Kamchatkan, Nivkh]; [Yukaghir, Samoyedic]; and [Yeniseian, Na-Dene, Burushaski]. The former two pairs showed the most
significant signals of language relationship. Our findings further support some hypotheses on long-distance language relationships
previously put forward based on linguistic methods but lacking universal acceptance.
On an even playing field of haiku making
Authors: Matsumoto Yoshiko , Maeda Harumi , Wan Emily Yu , Liao Hsiao-Wen
Published: December 2023

To help older adults living with cognitive impairments to engage in positive social interactions and maintain
verbal creativity, intergenerational small-group sessions of haiku creation and appreciation activity were
conducted online during the pandemic. Haiku, a short 17-syllable form of poetry originating in Japan, conveys
simple yet emotive seasonal images free from the complexity or logical continuity required of prose. Accordingly, it offers anyone
the challenge of an unfamiliar activity while minimizing impediment from linguistic and memory difficulties. The participants’
interactions during the activity and post-session interviews reveal that for both young and old, the haiku
creation format facilitated self-expression and sharing of personal narratives. The key to meaningful interaction was the equal
positioning of persons with and without cognitive impairments and their efforts to understand their interlocutor’s purpose and
conversational direction. The study encourages further studies in pragmatics centered on affect-oriented communication.
Physical insights of interface traps and self-heating effect on electrical response of DMG FinFETs in overlap and underlap configurations: analog/RF perspective
Authors: Chaudhary Rashi , Saha Rajesh
Published: December 2023

This paper presents a thorough analysis on analog/RF parameters including interface trap charges (ITCs) of two different densities of states (DOS) along with self-heating on the performance of DMG FinFETs in Overlap and Underlap configurations. Initially, the independent simulations for acceptor ITCs and Self-heating in conventional device reveals that performance degradation caused by Self-heating is more prominent (25.03%) than uniform acceptor ITCs (9.46%). In consecutive step, the cumulative impact of both acceptor ITCs and Self-heating on DC and RF/analog parameters are carried out. Investigation reveals that as the impact of self-heating is larger in overlap configuration, the degradation in drain current is higher in overlap configuration (45.2%, 54.5%) as compared to conventional (30.4%, 40.96%) and underlap (37.2%, 52.8%) configurations for both Uniform and Gaussian trap distributions, respectively.
The effect of heat treatment on microstructure and martensitic transformation temperatures in Ni44Fe19Ga27Co10 single crystals
Authors: Timofeeva E E , Panchenko E Yu , Tokhmetova A B , Volochaev M N , Zherdeva M V , Tagiltsev A I , Surikov N Yu , Chumlyakov Yu I
Published: December 2023

The microstructure and temperature of martensitic transformation of Ni44Fe19Ga27Co10 single crystals after aging at temperatures from 623 K to 1173 K were studied by electron microscopy and differential scanning calorimetry. The temperature ranges of the second phase precipitation, their lattice structure and volume fraction, and also the modification of the nanodomain structure of the L21+B2 high-temperature phase were determined in dependence on aging temperature. The influence of microstructure parameters on the martensitic transformation temperatures, transformation intervals and thermal hysteresis has been discussed.
Computational model of interacting system dynamics of calcium, IP3 and β-amyloid in ischemic neuron cells
Authors: Pawar Anand , Pardasani Kamal Raj
Published: December 2023

The study of single independent dynamics of calcium ([Ca2+]), IP3, and β-amyloid (Aβ) in neurons provide limited information. Some attempts are reported for the dynamics of two interacting systems of [Ca2+] and IP3, and calcium and Aβ, which gave some novel insights about the phenomena. However, the interactions of these three systems have not been analyzed till date in neurons. Therefore, a novel model is constructed to study the interactions of the spatiotemporal systems of [Ca2+], IP3, and Aβ in neurons. A two-way feedback mechanism between [Ca2+] and IP3, and [Ca2+] and Aβ has been incorporated into the model. The model is formulated by coupling three reaction-diffusion equations of [Ca2+], IP3 and Aβ, respectively. This coupling automatically takes care of the indirect two-way feedback process between IP3 and β-amyloid in neuron cells. The finite element method (FEM) with the Crank-Nicolson scheme (CNS) is utilized to study the contribution of various ER-associated processes like RyR, IP3R, SERCA pump, buffer approximation, etc on the neuronal interactions of [Ca2+], IP3, and β-amyloid during Ischemia. The numerical findings provide novel insights into alterations in ER handling during Ischemia, resulting in disturbances in the neuronal calcium, IP3, and Aβ levels, which may cause the advancement of Alzheimer’s illness and be responsible for neurotoxicity and cell death.
Improving the accuracies of estimating environment parameters via initial probe-environment correlations
Authors: Zhang Chenxia , Gong Beili
Published: December 2023

We investigate the effect of the initial probe-environment correlations in estimating environment parameters. The probe constructed by two qubits, i.e. the two-qubit probe, is coupled with separate bosonic reservoirs and prepared in the product state. With the initial probe-environment correlations, we derive the analytic quantum Fisher information (QFI) and the corresponding quantum signal-to-noise ratio (QSNR) to quantify the estimation accuracy of environment parameters. The QFI and the QSNR increase when estimating cut-off frequency, coupling strength, and temperature, respectively, demonstrating that the initial probe-environment correlations can be used to improve the accuracy of estimating the environment parameters in the estimation scheme of two-qubit probes.
Dimensional reduction of dynamical systems by machine learning: automatic generation of the optimum extensive variables and their time-evolution map
Authors: Nogawa Tomoaki
Published: December 2023

A framework is proposed to generate a phenomenological model that extracts the essence of a dynamical system (DS) with large degrees of freedom using machine learning. For a given microscopic DS, the optimum transformation to a small number of macroscopic variables, which is expected to be extensive, and the rule of time evolution that the variables obey are simultaneously identified. The utility of this method is demonstrated through its application to the nonequilibrium relaxation of the three-state Potts model.
Safety Design of Uncontained Engine Rotor Failure for Civil Aircraft Primary Flight Control System
Authors: Wang Xiao-Hui
Published: December 2023

The safety design of uncontained engine rotor failure for civil aircraft primary flight control systems is more difficult than other airborne systems. This paper presents a safety design method that establishes a two-stage collision model inspection mechanism and introduces an automatic analysis algorithm in the process of comprehensive impact analysis of the cascade system. The method applies to the detailed design stage of civil aircraft systems. It can reduce the difficulty of the safety analysis process and improve the accuracy of the analysis results. The verification of a civil aircraft primary flight control system design shows that after using the safety design method, the time cost of the analysis process is significantly reduced, and the analysis results are more accurate, thereby reducing the difficulty of design changes.
Aerodynamic Analysis of Sideslip Angle Sensor Layout Design on Civil Aircraft
Authors: Fang Yang , Yang Hui , Guan Jian
Published: December 2023

The sideslip angle of the aircraft holds great significance for the flight control and navigation system, as it directly affects the precision of controlling the aircraft’s attitude and position. This article primarily focuses on elucidating the utilization of Computational Fluid Dynamics (CFD) in the layout design of the sideslip angle sensor. Through CFD analysis, the velocity field surrounding the fuselage is thoroughly examined. By integrating the specific features and principles guiding the design of the sideslip angle sensor, the most optimal positioning for the sensor can be determined.
Structural Optimization of Horizontal Stabilizer Tailing Edge Hinge Rib
Authors: Cai Jing
Published: December 2023

Aircraft structural design requires lightweight design on the premise of meeting various performances. The number of hinge ribs in the aircraft trailing edge compartment is large, so it is very important to optimize the structure to achieve lightweight design. In this paper, the topology optimization algorithm is used to optimize the hinge ribs of the trailing edge cabin, and the secondary design is carried out according to the topology optimization results to achieve lightweight. The optimized rear edge cabin hinge rib can meet the requirements of strength, rigidity, process, manufacturing, etc., and the weight is greatly reduced compared with before optimization.
Configuration Design and Dynamics Simulation Analysis of Deployable Exposure Experiment Platform
Authors: Sun Huize , Zhao Chong , Wang Ke
Published: December 2023

Aiming at the problem that the traditional rigid exposure experiment platform takes up too much launch space and consumes high launch cost, a thick panel kirigami method is used to propose a deployable thick panel model for the exposure experiment platform, which realizes the plane of the thick panel. In the unfolding design, the unfolding process simulation of the structure was carried out, the influence of different hinge position drives on the dynamic behavior of the structure unfolding was studied, and the kinematics laws of the structure unfolding process under different driving modes were summarized. The new deployable exposure experiment platform provides new ideas for the development and application of practical engineering in the future, and the dynamic simulation also provides a driving strategy for it.
The Design of Phugoid Mode Stabilization in Angle of Attack Protection Control Law
Authors: Zhang Yuqi , Xu Dongguang , Zheng Xiaohui
Published: December 2023

To achieve the requirement of maintaining the angle of attack, the design of the angle of attack (AOA) protection control law often causes instability in the pitch attitude and generates phugoid mode oscillations. Conversely, adding a damping ratio of phugoid to suppress the oscillations would reduce the stability of the angle of attack and the maneuverability of the aircraft. Therefore, when designing the AOA protection control law, it is necessary to choose the appropriate damping ratio to allow the aircraft to have a certain balance between maneuverability and stability. At present, people do not pay enough attention to this, but the resulting aviation accidents make this problem urgent to be solved. In this paper, based on the general modeling process, the linear model of a sample aircraft is established. Different gain values are designed according to the different needs of different flight phases for aircraft maneuverability and stability. The simulation shows that in the flight phase, the phugoid mode stabilization control law designed by the eigenstate assignment method (EA) can reduce the phugoid oscillation effectively, while in the landing flare phase when maneuverability is more important, it provides a greater degree of maneuverability.
Error Correction Method of Platform Displacement for Large Load Static Test
Authors: Sun Zijie , Tang Xiaojun , Yang Qifan , Xin Liang
Published: December 2023

The test platform is an indispensable supporting bearing structure in static tests, which is mainly used to fix test products, simulate the real loading boundary, and provide better operation space for measurement. With the large-scale and complicated spacecraft structure, the static test platform tends to be large-scale, and the displacement measurement error of the static test platform under large load conditions cannot be ignored. The conventional error correction method only uses the displacement value of the monitoring point at the corresponding position of the platform to compensate, ignoring the comprehensive influence of the six degrees of freedom displacement for the test platform on the displacement measurement of the specimen. When it is used for the error correction of the static test of large spacecraft structures, there is a large measurement error affected by the structural size. In view of this, according to the static test requirements of a large spacecraft, a large bearing static test platform with a lateral load of 22 T and a longitudinal load of 52 T is designed, and a displacement measurement error correction method based on six degrees of freedom is proposed. Through the static test of a large spacecraft structure, the method can effectively reduce the displacement measurement error caused by the displacement of the test platform, and the error correction rate can reach 20%.
Enhancement of microwave frequency via heterogeneous magneto resistance tilted polarizer based spin torque nano oscillator with the inclusion of Oersted field
Authors: Bhoomeeswaran H. , Sabareesan P.
Published: December 2023

Here, we presented a heterogeneous Magneto Resistance Tilted Polarizer-based Spin Torque Nano Oscillator [MRTP-STNO] and theoretically included Current Induced Oersted Field [CIOF] via the macro-spin domain. The dynamics of magnetization provoked by Spin Transfer Torque [STT] are studied by solving Landau-Lifshitz-Gilbert-Slonczewski [LLGS] equation. In this device, β is the independent tilt angle of the fixed layer. In contrast, θ is the angle between the free layer magnetization and the easy axis of the device, respectively. Angles β and θ can be varied from 10° to 90° as an increment of 10°. The maximum obtained frequency of the device of about 215 GHz, and PSD of 1.7 μW/mA2/GHz with CIOF as 50 kA/m. We suggest the device is an ideal candidate for ultra High-Frequency and unveils a new path for foreseeable spintronic devices.
Synthesis and Characterization of Cu-Ni Thin Films at Different pH Baths: A Comparative Study Using XRD, XPS and Corrosion Analysis
Authors: Saini Himanshu , Gangwar Sunil , Yadav C S , Khatri M S
Published: December 2023

Cu-Ni films are electrodeposited at a cathodic current of 10 mA via galvanostatic mode on ITO-coated glass substrates. It found by X-ray diffraction that the films crystalized into fcc structure with the highest intensity corresponding to (111) plane at a two-theta value of 43°. The presence of binding energy peaks at 856.57 eV, 861 eV, 933 eV, and 952 eV observed in X-ray photoelectron spectroscopy have confirmed the presence of nickel oxide/hydroxide and copper oxide/hydroxide, respectively. Tafel polarization studies conducted in 3.5 wt. % sodium chloride solution shows the shifts in Ecorr towards the positive side and decrease of Icorr with the passage of exposure time is attributed to the formation of protective oxides/hydroxides layers of Cu and Ni elements in the films.
Synthesis and study of structural and electrical transport properties of Ni and Zr doped Y-type Ba-Co hexa-ferrite
Authors: Singh G. , Kaur R. , Ghumman S. S.
Published: December 2023

In present study, Co2 Y-type barium hexaferrite samples of Ba2Co2NixZrxFe12-2xO22 (with x =0.5 and 1.0) were synthesized using the solid-state reaction method with sintering temperatures of 900°C and 1200°C. To examine the effects of Ni-Zr doping on the crystal structure and dielectric properties of Y-type barium cobalt hexaferrite, samples were characterized using EDS, XRD and SEM techniques. The XRD results confirmed the formation of pure Y-type hexagonal ferrites at 1200°C sintering temperatures. EDS analysis confirmed elemental compositions and SEM provided morphology of the materials. The dielectric properties were measured using Impedance analyzer. At normal frequencies, the x = 1.0 doped sample showed significant increase in dielectric value which came to be of the order of 2500. This might be attributed to electron hopping between Fe2+ and Fe3+ ions and hole hopping between Ni2+ and Ni3+ ions, which could enhance dielectric properties in ferrites under applied electric fields. Furthermore, electrons transferred between Fe2+/Fe3+ ions and holes transferred between Ni2+/Ni3+ ions explain the pronounced improvement in electrical properties observed for x = 1.0 samples.
Ordinary light induced polarization zones in Tutton salt crystal
Authors: Pandey Suchi , Pant Navin , Pandey S.D.
Published: December 2023

Ordinary light wave passing through a low symmetry crystal along an off optic -axis direction gets split into ordinary and extra-ordinary waves. If the beam size is large, the two polarized waves could overlap covering a large volume within the medium. It is realized that overlapping ordinary and extra-ordinary waves, result in creation of alternate polarization regions with different fluctuating crystalline fields inside a low - symmetry hydrated crystal. If suitable ions are doped in an experimental crystal, their optical absorption spectra could reflect the effect of alternate polarization fields and creation of ordinary light induced periodic polarization (OLIPP) effect inside a low symmetry hydrated crystal.
Ultrasound-assisted green synthesis of silver nanoparticles from Allium sativum, its characterization, antimicrobial capabilities and thermo-plasmonic studies
Authors: Shekhar Shubhra , Prakash Prem , Shekhar Swapnil , Singh Sushil Kumar , Prasad Kamlesh
Published: December 2023

Bottom-up approach for the green synthesis of silver nanoparticles (AgNPs) from Allium sativum cloves using ultrasound-assisted technique has been investigated. The fabricated AgNPs were characterized using advanced techniques of spectroscopy, scattering, and microscopy. The synthesized AgNPs have a size distribution of 36.15 ± 8.54 nm, as confirmed by TEM analysis and 44.18 ± 0.55 nm as per XRD analysis. The fabricated AgNPs in this range exhibited greater surface plasmon resonance (SPR) for absorption, scattering and extinction coefficient. Higher negative ζ potential showed long term stability of fabricated AgNPs without agglomeration. Antimicrobial efficacy of fabricated AgNPs demonstrated high activity against pathogenic bacteria making them a promising candidate for applications in medical, environmental, biomedical, food packaging and allied fields.
Room Temperature Ammonia (NH3) Gas Sensor based on Molybdenum Disulfide and Reduced Graphene Oxide (MoS2/rGO) Heterojunction.
Authors: Singh Ravinder , Agrohiya Sunil , Dahiya Sajjan , Rawal Ishpal , Ohlan Anil , Punia Rajesh , Maan A.S.
Published: December 2023

Nanocomposites based on 2D materials exhibit synergistic behavior at their interfaces, making them a promising candidate for gas sensing applications. The MoS2/rGO nanocomposite used in this study was synthesized using a one-step hydrothermal process. By using X-ray diffraction (XRD), the synthesized composite was thoroughly characterized. The spin coater was used to deposit the nanomaterial thin film onto the glass substrate. The nanocomposite sensing was tested at a 40 ppm concentration of ammonia gas. An increase in ammonia concentration was found to correspond with a rise in the resistance of the sensor. The nanocomposite interface of this sensor enabled it to exhibit a synergistic behavior, resulting in several desirable characteristics, including low power consumption, fast response and recovery times, high selectivity, and a low operating temperature.
Physico-chemical, optical, and functional characterization of the developed phytochemical rich water dispersible tablets from moringa leaf and wheat grass powder
Authors: Suraksha Kumari , Jindal Navdeep , Prasad Kamlesh
Published: December 2023

Moringa oleifera is a well-recognized wonder plant with vigorous growth, great nutritional potential, and full of phytochemicals to add therapeutic and medicinal effects. Wheat grass also has proven health benefits like moringa. Moringa leaves and wheat grass were dehydrated in a cabinet drier and powdered. These powders were analysed for physicochemical, optical, nutritional, functional, rheological, structural, and phytochemical characteristics. The developed powders were rich in protein, phenolic content, and antioxidant potential to be used for prophylactic purposes. Antioxidant value was observed as 88.86±0.15, and 38.08±0.32 mg/g and the total phenolic content as 149.30±2.26 and 126.06±0.47 mg GAE/100g for the moringa leaf and wheatgrass powder, respectively. During storage at room temperature for three months the antioxidant potential was reduced to almost 10-15%. The rapid loss of vital phytochemicals happens due to the process of oxidation, as powders were having higher exposed surface area to volume. Wet granulation method was applied for tablet formation from moringa leaf and/or wheatgrass powder. The tablets were tested for weight variations, hardness, disintegration, sedimentation characteristics, wetting volume, wetting time, and functional characteristics. Insignificant change in the antioxidant activity and TPC were observed on converting the powders into tablets. The detailed phytochemicals as present in the developed tablets may find role in prophylactic and therapeutic applications.
Physiochemical, thermal, textural, functional, and microstructural characterization of the developed shelf stable bigel using hydrogel and oleogel
Authors: Sarika  , Prasad Kamlesh , Kumar Ashwani
Published: December 2023

Bigel system was developed using a combination of oleogel and hydrogel. The developed bigel showed semi-solid stable emulsion as the storage modulus was significantly higher than the loss modulus. Increasing hydrogel concentration in bigel reduced the hardness. Bigel containing 40:60 hydrogel to oleogel resulted in a desirable homogenous structure. This finalized water in oil bigel is characterized based on the physio-chemical, textural, thermal, functional, and microstructural characteristics. The filter strip method was used to test the bigels’ ability to bind oil, and the results showed that the bigel made of beeswax and soybean oil had the most outstanding ability. The melting point temperature of the bigel was found to be higher than that of the oleogel based on the DSC data. The results of storage study at refrigerated and room temperature was found that the developed bigel is stable and acceptable for at least four weeks.
Structural and electronic properties of n-vinylcarbazole - 3-methoxythiophene copolymer: DFT analysis
Authors: Sharma P , Khare K P , Srivastava R , Srivastava A , Kathal R
Published: December 2023

Conducting polymers are advantageous over traditional inorganic materials in terms of better environmental stability, tunable electrical characteristics, excellent optical and mechanical properties etc. Copolymerization is a preferred common process to modify material properties amongst the diverse accessible synthetic approaches. The present study reports copolymerization synthesis and determination of stability and electronic properties of chosen monomers and their copolymer using density functional theory (DFT)-based approach for n-vinyl carbazole (NVK) and the mono-substituted thiophene bearing a methoxy group at the third position of the thiophene ring (3-MeOTH). On comparison with the monomers, the copolymer of n-vinylcarbazole and 3-methoxythiophene (NVK-3-MeOTH) reveals enhanced stability, with reduced HOMO-LUMO gap, energy gap (Eg) in chloroform media, as well as variation in density of state (DOS) profile. Further, decrements in total energy, ionisation potential, electron affinity, and dipole moment are observed due to copolymerization.