bluuebunny/crossref_metadata_2025_split huggingface dataset:
Optimization of Preparation Conditions and Purity Analysis of Ammonium Ferrous Sulfate
Authors: Liu Hongmei , Chen Ronghua , Huang Wei , Qian Hongmin 
Published: May 2023

Abstract
The preparation of ammonium ferrous sulfate is a typical comprehensive experiment in inorganic chemistry in universities, and is also an important part of the chemistry laboratory technology project of the National Vocational Skills Competition. The synthesis method is constantly improving. The traditional preparation experiment of ammonium ferrous sulfate was studied by reduction and green modification, and the purity of the product was analyzed by spectrophotometry. The results show that the optimal experimental conditions are as follows: the raw material of reduced iron powder with fine particle size and uniform particle size is selected, the optimum molar ratio of iron raw material to dilute sulfuric acid is 1:1.2, and the product yield and purity obtained by evaporative crystallization in water bath are higher.
Study on Process Parameters of Aluminium Alloy Oscillating Laser Double-wire Additive Manufacturing
Authors: Liu Miaohua , Long Jiangqi 
Published: May 2023

Abstract
To improve the deposition efficiency and forming quality of laser fuse additive manufacturing, this paper combines the advantages of oscillating laser and double-wire additive manufacturing to realize oscillating laser double-wire additive manufacturing. The feasibility of the scheme is verified through experiments, and a corresponding three-dimensional simulation model is established. Through the comparison of experiment and simulation, the forming fit is good and the accuracy of the model is verified. Finally, the forming effects under different laser oscillating frequencies and oscillating amplitudes are studied through the simulation model. The results show that the appropriate oscillating amplitude can preheat the substrate and improve wettability. The laser oscillating frequency is inversely proportional to the forming width, and a high oscillating frequency can improve the forming effect.
Study on surface fabrication and drag reduction performance of the bionic fish-scale composite structure
Authors: Wu Xueting , Wang Yonghua , Xu Jinkai , Yu Huadong 
Published: May 2023

Abstract
It has been researched that the surface structure of many organisms has unique resistance reduction properties and it is important to replicate the morphological features of the biological body surface on the material surface. So, a method for creating a biomimetic fish-scale surface using a laser is proposed by observing the laminar arrangement features of three common fish scales on the body surface, and a composite structure of bionic fish scale macrostructure and different microstructures of bionic fish scale were machined on on aluminium alloy surfaces. The surface morphology and elemental composition were characterized before the resistance reduction test. The results indicate that both the biomimetic fish-scale macrostructure and composite structure have an obvious effect of reduced drag, among which, maximum resistance reduction can be achieved 44.02% at a flow rate of 0.6 m/s for the bionic carp fish scale composite structure.
Nonlinear compression behavior research of molded pulp material
Authors: Li Zhihang , Tang Junjie , Mao Kuanmin , Song Hao 
Published: May 2023

Abstract
The molded pulp material is a popular environmentally friendly material, and many countries are strengthening its application in packaging. This paper aims at the molded pulp material’s mechanical properties. A compression test, which fits the actual work conditions is applied. And then use the standard linear solid (SLS) model to analyze the properties. The results show that the mechanical properties of molded pulp material are significantly different between the surface plane and the side plane, due to the layered distribution of the fibers. In the SLS model curve fitting results, the stiffness of the parallel spring element under edge plane load is significantly greater than that under surface plane load. This indicates long-term stable loads are more suitable for materials designed with loads parallel to the surface, the dynamic vibration energy needs to be designed on the material’s surface.
Study on the Preparation Method of Fluorescent Rock Thin Sections Made from Non-fluorescent Materials
Authors: Wang Guojun 
Published: May 2023

Abstract
Canadian gum, epoxy resin, and emery are used in the production of general rock thin section materials. These materials have fluorescence, so it is not possible to make fluorescent thin sections. The use of other colloids or transparency is not good, because the use of abrasive emery will also lead to the specimen having fluorescence, which cannot be selected. At present, 502 is usually used to make fluorescent sheet adhesive in China, but the colloid is soluble in water and the colloid is not impact-resistant. During sample preparation, it cannot be used for a long time by water grinding, only dry grinding or oil grinding. The samples of water grinding are susceptible to moisture and scratches, so the rock sheet cannot be preserved for a long time, which seriously affects the efficiency and quality of production. In recent years, the team has come up with a variety of materials and methods to make fluorescent rock-thin sections through repeated trials and achieved good results.
Application and Study of Epoxy Resin AB Adhesive in the Preparation of Rock Thin Section
Authors: Qiu Bihan , Han Tong , Liu Yang 
Published: May 2023

Abstract
Common rock thin section making and identification technology is widely used in reservoir property research of oil and gas exploration and development, and in basic analysis such as rock and mineral identification. It is also used to identify and describe tiny rock particles, fossils, fractures, and structures. The preparation of qualified rock-thin sections is critical to the accuracy of identification results. Through the research on each link affecting the production process and materials of ordinary rock slices and continuous experimental optimization and comparison, epoxy resin AB glue is used as bonding colloid material, for it is colorless, transparent, insoluble in water, impact resistant, and firmly bonded to tiny rock particles.
Analysis of Worm Deformation Behavior of GH2132 Superalloy
Authors: Wang Huizhen , Kou Ming , Yang Yong , Xiong Hua , Guo Shuo , Zhai Yuewen , Zhou Leyu , Zhang Zibo 
Published: May 2023

Abstract
GH2132 superalloy performances excellent properties, such as the good rupture strength and yield strength below 923K, the fine processing plasticity and the good welding properties. The warm working behavior of GH2132 superalloy at 673 K – 773K is investigated by a thermal simulator in this paper. The results show that the worm working effects at the center of specimen is the most significant compared with other positions. The deformation temperature and strain rate is the key parameters significantly affecting the warm working behavior. The increase of the temperature enhances the recovery softening effect, which reduces the stress and the work hardening effect slightly. The deformation heat is significant with the increasing strain rate, which results in the work hardening behavior does not change markedly. This study provides an important reference for the worm forming of GH2132 superalloy.
Study on ultrasonic nondestructive evaluation method for grain size of magnesium alloy components with complex profile
Authors: Li Hongwei , Zhang Rongfan , Zheng Ying , Fu Kang 
Published: May 2023

Abstract
In order to solve the problems of difficult measurement, inaccurate results and serious interference of diffusion and attenuation in the nondestructive evaluation of grain size of magnesium alloy components with complex profile, the sound field models of plane, cylindrical and conical parts based on the multiple Gaussian sound beam method are studied, and the attenuation mechanism of ultrasonic propagation in the medium of complex components and the diffusion and attenuation components in curved test blocks are analyzed, An evaluation method of ultrasonic attenuation of grain size based on diffusion loss correction is proposed to eliminate the influence of complex components on the total amount of ultrasonic attenuation. The results show that the ultrasonic nondestructive evaluation method of grain size based on sound velocity diffusion correction can effectively reduce the system error and improve the accuracy of grain size evaluation of magnesium alloy components with complex profile.
Study on Distribution of Heat Treatment Temperature Field of Long distance Oil and Gas Pipeline with High Steel Grade
Authors: Xu Yan , Liu Yinglai , Yang Fengping , Feng Zhenjun , Bai Qiang , Chang Yonggang , Nie Xianghui , Li Liang 
Published: May 2023

Abstract
In-service welding repair is important to ensure natural gas pipelines’ safe and reliable operation. The temperature distribution in the welding heat treatment process directly affects the pipeline’s bearing capacity and local stress distribution. This study studied the temperature distribution of a high steel pipeline generated by the heat treatment process for the long-term transportation of oil and gas was studied experimentally. The medium frequency induction heating method is applied to heat the tube body by winding a heating belt on the outer wall of the steel pipe to simulate pre-welding and post-welding heat treatment. At the same time, a thermocouple is used to record the temperature change of each position during the whole heating process to obtain data. Through numerical analysis and fitting, the distribution law of the temperature field in the heat treatment process of steel pipe is established to guide the field heating temperature control.
Comparison of Effect of Strong Magnetic Field on Microstructure and Photo Absorption Performance of CaTiO3 and TiO2
Authors: Lin Changxin , Li Qiang 
Published: May 2023

Abstract
The study found that after strong magnetic field treatment of CaTiO3 along with the increase of interplanar distance and lattice constant, the band gap was reduced and the photo absorption performance was improved. The higher the applied magnetic field strength, the smaller the rutile TiO2 lattice is, and the change of magnetic field on the lattice constant is nonlinear. The change before and after 6T is significant, while after the 9T treatment, the light absorption capacity in the violet region can be improved and the effect of strong magnetic field rutile lattice can be largely eliminated by simple heat treatment.
In-situ study on the tensile property and fracture behavior of Cr coating for nuclear fuel cladding
Authors: Qiu Wenjia , Zhong Jingyu , Wang Shuai , Lin Huanyue , Jiang Jishen , Ma Xianfeng 
Published: May 2023

Abstract
It has been suggested that Cr-coated zircaloy is an excellent material for accident-tolerant fuel (ATF) cladding. It is found that Cr coating shows multi-cracking behavior under external load due to its embrittlement. Different fabrication parameters will lead to different crack resistances of the coatings, but the brittle cracking characteristic is common. The estimation of the strength and structural integrity of the fuel cladding depend on the cracking characteristic of the coating. The Cr coating’s tensile characteristic for ATF cladding was examined utilizing the in-situ mechanical testing method. The surface crack initiation, propagation, and fracture process were captured in real time, and the crack density evolution of two different process parameters was compared. The results demonstrate that the first long channel crack occurs at a small strain, then the crack density increases rapidly and gradually reaches saturation with increasing stress. Different fabrication parameters will change the cracking resistance. Compared with the previous sample, the new sample started to crack at a larger strain, the crack density reached saturation faster with a larger saturated crack density, and the crack resistance is inferior. Many small cracks in different directions were observed near the fracture surface. Moreover, there was no interfacial spallation under stress, demonstrating the Cr coating’s excellent interfacial adhesive property.
Research Progress and Improvement Methods of Highly Efficient and Stable Perovskite/Silicon-based Heterojunction Tandem Cells
Authors: Xia Yuyang 
Published: May 2023

Abstract
In recent years, in order to cope with climate and energy issues for green transformation, many countries have successively laid out the solar photovoltaic industry, making the photovoltaic industry the fastest growing industry in the energy sector. Among them, perovskite tandem cells (TSCs) are an important development direction. The stacked cells composed of perovskite top cells (PSCs) and silicon-based heterojunction (HJT) cells currently achieve a maximum photovoltaic conversion efficiency (PCE) of 31.25% and have great potential for development. This paper reviews the research and development process of the perovskite/silicon-based HJT tandem battery, and analyzes the methods to improve its PCE and stability through the research on the structure of the top, bottom and transition layers of the perovskite/silicon-based HJT tandem battery, in order to provide useful information in the industrial development and application.
Improvement of double photon emission Compton imaging using angular and polarization correlations in cascade photons
Authors: Kim Donghwan , Ueki Taisei , Rahman Agus Nur , Yan Linlin , Uenomachi Mizuki , Shimazoe Kenji , Takahashi Hiroyuki 
Published: May 2023

Abstract
A Compton camera is a gamma ray imaging system that produces images by superposing Compton
cones calculated from Compton kinematics. However, the reconstructed images exhibit a high
background. In this study, the angular correlation and polarization correlation were used to
decrease the background. 111In, which emits 171 keV and 245 keV cascade gamma
rays, was imaged using Compton camera modules in the ring structure. The 3D list-mode ordered
subset expectation maximization method was used to reconstruct the images. Probability modeling of
events reflecting angular and polarization correlations was applied to the image-reconstruction
algorithm. The results were compared with those of a typical Compton camera method using only 245 keV Compton cones. The sensitivity of the proposed method was 1.03% of that of the typical
method. However, compared to the typical method, the application of angular and polarization
correlations improved the signal-to-background ratio. The proposed method is expected to be useful
in capturing low-background images wherein a ring-type Compton camera and cascade photon-emitting
nuclides can be used.
Plasma density profile reconstruction of a gas cell for Ionization Induced Laser Wakefield Acceleration
Authors: Filippi F. , Dickson L.T. , Backhouse M. , Forestier-Colleoni P. , Gustafsson C. , Cobo C. , Ballage C. , Dobosz Dufrénoy S. , Löfquist E. , Maynard G. , Murphy C.D. , Najmudin Z. , Panza F. , Persson A. , Scisció M. , Vasilovici O. , Lundh O. , Cros B. 
Published: May 2023

Abstract
Laser-driven plasma wakefields can provide hundreds of MeV electron beam in mm-range distances potentially shrinking the dimension of the actual particle accelerators. The plasma density plays a fundamental role in the control and stability of the acceleration process, which is a key development for the future electron injector proposed by EuPRAXIA.
A gas cell was designed by LPGP and LIDYL teams, with variable length and backing pressure, to confine the gas and tailor the gas density profile before the arrival of the laser. This cell was used during an experimental campaign with the multi TW-class laser at the Lund Laser Centre. Ionization assisted injection in a tailored density profile is used to tune the electron beam properties. During the experiment, we filled the gas cell with hydrogen mixed with different concentration of nitrogen. We also varied the backing pressure of the gas and the geometrical length of the gas cell. We used a transverse probe to acquire shadowgraphic images of the plasma and to measure the plasma electron density.
Methods and results of the analysis with comparisons between shadowgraphic and interferometric images will be discussed.
Development of FPGA-based standalone, portable TDCR system
Authors: Sharma M.K. , Agarwal Shivam , Kulkarni M.S. , Baraiya S.V. , Kulkarni D.B. 
Published: May 2023

Abstract
A standalone, lightweight, portable, FPGA-based triple to double coincidence ratio (TDCR) system is developed. The optical chamber of the system is fabricated in a dual, coaxial cylindrical geometry, with the inner cylinder made up of Teflon and the outer one of aluminium. Three square PMTs, each having an active cathode area of 2.3 cm × 2.3 cm, are housed in the optical chamber. The variation in detection efficiency to identify the optimum kB (ionization quenching parameter) value is achieved by changing the vial position vertically with respect to the centre line of the PMTs. The coincidence analyzer implemented in a field programmable gate array (FPGA) transfers the pulse counts and associated parameters in real time to a Raspberry Pi single board computer (SBC). The TDCR algorithm to compute the efficiency is implemented in the SBC. In addition, the SBC is interfaced with a local 7” touchscreen to provide an intuitive graphical user interface (GUI) for operating the standalone instrument. The system performance is validated with 3H and 14C radionuclide standards.
A renewal approach to configurational entropy in one dimension
Authors: Krapivsky P L , Luck J M 
Published: May 2023

Abstract
We introduce a novel approach, inspired from the theory of renewal processes, to determine the configurational entropy of ensembles of constrained configurations of particles on a one-dimensional lattice. The proposed method can deal with all local rules involving only the lengths of clusters of occupied and empty sites. Within this scope, this method is both more systematic and easier to implement than the transfer-matrix approach. It is illustrated in detail on the k-mer deposition model and on ensembles of trapped Rydberg atoms with blockade range b.
Transition probability and total crossing events in the multi-species asymmetric exclusion process
Authors: de Gier Jan , Mead William , Wheeler Michael 
Published: May 2023

Abstract
We present explicit formulas for total crossing events in the multi-species asymmetric exclusion process (r-ASEP) with underlying

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q

(

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l

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r
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1

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symmetry. In the case of the two-species TASEP these can be derived using an explicit expression for the general transition probability on

Z

in terms of a multiple contour integral derived from a nested Bethe ansatz approach. For the general r-ASEP we employ a vertex model approach within which the probability of total crossing can be derived from partial symmetrisation of an explicit high rank rainbow partition function. In the case of r-TASEP, the total crossing probability can be show to reduce to a multiple integral over the product of r determinants. For two-TASEP we additionally derive convenient formulas for cumulative total crossing probabilities using Bernoulli-step initial conditions for particles of type 2 and type 1 respectively.
Acoustical and ventilation performance of school building near airport area in relation to Indoor Environmental Quality (IEQ)
Authors: Gamalia A N , Ekasiwi S N N , Samodra F X T B 
Published: May 2023

Abstract
Buildings that prioritize natural ventilation have problems dealing with airborne noise. The Indoor Environmental Quality (IEQ) disturbance will be considered in the school design located around the airport. As a result, the disorder can cause Sick Building Syndrome (SBS). Thus, the aspect of natural ventilation and noise (acoustics) is a problem that must be compromised. This paper will report the results of measuring the IEQ parameters of ventilation and acoustic, indicated by changes in the ratio of window openings in an elementary school located closest to the airplane runway. The results show that the top-hung type opening with a ratio of the half from the maximum opening produces airflow and noise that still does not meet the IEQ requirements. Hence the aspect of temperature and humidity and CO2 levels still meets the IEQ requirements.
The Thermal Performance of Osing Houses in The Banyuwangi as Humid Tropical References
Authors: Rizka Hablana , Defiana Ima , Noerwasito V.Totok 
Published: May 2023

Abstract
The Osing houses are one of the various traditional architectures in East Java Province, located in Kemiren Village, Banyuwangi Regency at an altitude of 144 meters above sea level, which is included in a low topography with a unique roof, which has three types of structures, namely Tikel Balung, Crocogan, and Baresan. The House of Osing grew from people with all kinds of traditions and took advantage of various local potentials, such as materials, technology, and existing knowledge. However, the local potential, such as the use of lightweight materials, creates problems hot because the thermal properties of lightweight materials are easy to flow thermally, so they can create overheating conditions and affect comfort conditions in buildings. This study aims to the influence of the design of the Osing house on thermal conditions, describes the material behavior of the design elements that affect the thermal performance of the Osing house. The research was conducted using observation and measurement methods. The final results of this study indicate that houses have not been able to provide thermal comfort, especially during the afternoon to evening, when the condition of the building tends to excessive heat.
Zero Energy Building Approach in Design of Biohydrogen Research Centre
Authors: Fathan N , Fitriaty P , Mulyati A 
Published: May 2023

Abstract
The utilisation of natural energy not only can reduce energy consumption in buildings but also can lower carbon emissions from the use of fossil fuel energy for building services. It is believed that with appropriate design and a good attitude of building users, the role of renewable energy in reducing carbon emissions will be maximised. This study proposed the implementation of Zero Energy Buildings (ZEB) concept in the initial stage of building design by considering buildings’ form and façade design in relation to daylighting, natural ventilation and thermal design of buildings, and photovoltaic placement to save energy and to produce electrical energy in the designed building. In this study, ZEB Concept is treated as a secondary consideration in producing the architectural design for Biohydrogen Research Centre. The primary design generator is based on the philosophy of chemical bonds form representing biohydrogen chemical bonds. For a successful implementation of the ZEB concept in the Biohydrogen Research Centre design, both active and passive means are utilised in the building design. For passive means, daylighting and natural ventilation strategies were applied. While for active means, photovoltaic panels were employed as the primary electrical energy generation. Energy demand scenarios were predicted and calculated by the amount of energy used for lighting, air conditioning, and other appliances in the building. The total area needed for photovoltaic installation was obtained by balancing the energy demand prediction with the expected energy generation. The resulting design showed a promising outcome where the building is expected to achieve surplus energy with a total of 845,595.5 kWh electricity per year.