Central Position Research Articles

Managing liquidity along the supply chain: Supplier‐base concentration and corporate cash policy

AbstractWe find that customer firms with more concentrated supplier bases tend to hold higher levels of cash reserves. The positive relation between supplier‐base concentration and cash holdings is more pronounced for firms with nonstate ownership, higher market competition, worse inventory efficiency, more relationship‐specific investment, central positions in the production networks, and headquarters located in regions with lower levels of financial development. Furthermore, we show that debt issuance enhances firms' cash holdings when they have concentrated suppliers, and supplier‐base concentration increases firms' cash spending on R&D investment. Our study highlights the importance of supplier structure in shaping corporate cash policy.

High‐velocity impact resistance of the carbon fiber composite grid sandwich structures

AbstractThe carbon fiber composite grid sandwich structure represents an innovative category of lightweight composite sandwich structures, showcasing remarkable attributes including reduced weight, high‐specific strength, exceptional specific stiffness, and robust design flexibility. Using ABAQUS, the high‐velocity impact performance of carbon fiber composite grid sandwich structure is numerically simulated. This study delved into examining the impact patterns arising from various factors, including the equivalent density, height, and geometric configuration of the core layer. Additionally, the effects of the impact punch's initial velocity, size, and impact position on the high‐speed impact resistance performance of the carbon fiber composite grid sandwich structure were explored. The fracture absorption work of the structure and the kinetic energy attenuation rate of the impact punch are positively correlated with the equivalent density, height of the structural core layer, as well as the initial velocity and dimensions of the impact punch. Notably, the square carbon fiber composite grid sandwich structure was most significantly influenced by the equivalent density of the core layer, while the mixed carbon fiber composite grid sandwich structure was most sensitive to variations in core layer height and punch size. When impacted at the intersection of the ribs, compared with the central position between the two ribs, the structure shows enhanced fracture absorption energy and greater impact kinetic energy attenuation rate.Highlights The structure was modeled based on the interlocking assembly process. The high‐velocity impact resistance of the structure was studied. Different structural parameters were designed for the core layer to study. The initial velocity, size and impact position of the punch were involved.

Structural and Evolutionary Aspects of Plant Endocytosis.

Endocytosis is an essential eukaryotic process that maintains the homeostasis of the plasma membrane proteome by vesicle-mediated internalization. Its predominant mode of operation utilizes the polymerization of the scaffold protein clathrin forming a coat around the vesicle; therefore, it is termed clathrin-mediated endocytosis (CME). Throughout evolution, the machinery that mediates CME is marked by losses, multiplications, and innovations. CME employs a limited number of conserved structural domains and folds, whose assembly and connections are species dependent. In plants, many of the domains are grouped into an ancient multimeric complex, the TPLATE complex, which occupies a central position as an interaction hub for the endocytic machinery. In this review, we provide an overview of the current knowledge regarding the structural aspects of plant CME, and we draw comparisons to other model systems. To do so, we have taken advantage of recent developments with respect to artificial intelligence-based protein structure prediction.

Estimating organ dose with optimized peak dose index in cone-beam CT scans

PurposeOrgan dose evaluation is important for optimizing cone beam computed tomography (CBCT) scan protocols. However, an evaluation method for various CBCT scanners is yet to be established. In this study, we developed scanner-independent conversion coefficients to estimate organ doses using appropriate peak dose (f(0)) indices. MethodsThis study included various scanners (angiography scanners and linear accelerators) and protocols for the head and body (thorax, abdomen, and pelvis) scan regions. f(0) was measured at five conventional positions (center position (f(0)c) and four peripheral positions (f(0)p) at 90° intervals) in the CT dose index (CTDI) phantom. To identify appropriate measurement positions for organ dose estimation, various f(0) indices were considered. Organ doses were measured by using optically stimulated luminescence dosimeters positioned in an anthropomorphic phantom. Thereafter, the conversion coefficients were calculated from each obtained f(0) value and organ or tissue dose using a linear fit for all scanners, and the coefficient of variation (CV) of the conversion coefficients was calculated for each organ or tissue. The f(0) index with the minimum CV value was proposed as the appropriate index. ResultsThe appropriate f(0) index was determined as f(0)c for the body region and a maximum of four f(0)p values for the head region. Using the proposed conversion coefficients based on the appropriate f(0) index, the organ/tissue doses were well estimated with a mean error of 14.2% across all scanners and scan regions. ConclusionsThe proposed scanner-independent coefficients are useful for organ dose evaluation using CBCT scanners.

Intensity duration and frequency of Heat wave in different phases of MJO over India

The Madden-Julian Oscillation (MJO) is an important tropical atmospheric phenomenon that plays a significant role in modulating weather patterns across India. Heat Waves (HW) are extreme weather events that have severe impacts on human health, agriculture, and various socio-economic sectors. This research paper aims to investigate the dynamical relationship between MJO phases, as measured by the Real-time Multivariate MJO (RMM) index, and the occurrence of HW in India, as defined by the Indian Meteorological Department. This paper demonstrated the relationship among three aspects, i.e., intensity, duration, frequency of HW during the different MJO phases. The differential dynamics associated for about two-fold rise in the HW occurrence in the South East, Eastern and North West India in the MJO active phase. Inactive phase witnessed enhancement (suppression) of HW during wet (dry) over the regions. The novel finding of this paper is that, the weaker the MJO, the higher probability of HW occurrence in respective regions depending on the position of the MJO convection center. The maximum duration is observed to be significantly decreased by about 2 days in the active MJO phase over NW and north central parts of the country. It is also inferred from this study that there is a significantly decrease of 0.5 °C in HW intensity during the active wet phase of MJO over the NW India. To explain the linkage of HW with MJO, geopotential height (GPH), wind circulation, velocity potential (VP), sea surface temperature (SST) and outgoing longwave radiation (OLR) composite anomalies have been computed and used in the analysis. It is observed that all these parameters have a direct impact on the evolution, strength and spread of the HW in India. This dynamical study mechanism can be prescribed in the numerical weather prediction models for the improved prediction of such extreme weather events during summer for proactive disaster management.

Study on generation and evolution of base voids in heavy-haul railway tunnels using particle flow method

Most existing freight railway tunnels have experienced basement cracking, damage, and even mud-pumping after a certain period of operation. For heavy-haul railway tunnels with high traffic densities, large capacities, and large axle loads, this situation will be more serious. This paper establishes a simplified model of a single-track heavy-haul railway tunnel using the two-dimensional particle discrete element method. The meso-evolution process of the concrete structure and surrounding rock void at the bottom of the tunnel is studied in the later stages of repeated loading by heavy-haul trains. The difference in the base void between waterless and water-saturated bases is compared. The cracks in the surrounding rock are first generated at the lowest position of the invert center, and run from the middle to the sides and from the top to the bottom. The terminal cracks return to the free surface, exhibiting a parabolic shape that opens upward. There are more cracks in the middle and fewer at the sides. The asynchronous deformation of the surrounding rock and the inverted arch is positively correlated with the number of cracks. The voiding process under water-saturated conditions is similar to that without water, but the depth and width over which the rock mass is crushed and the range of voiding increase exponentially in the water-saturated case, and the void appears earlier. It is anticipated that these research results will contribute to the structural design and operational safety of heavy-haul railway tunnels.

Research on the Effect of Wind Direction and Speed on the Distribution of Coal Temperature Field

ABSTRACT Insufficient handling of spontaneous combustion in coal piles arises from the influence of natural wind during the piling process, resulting in the displacement of the heat source. To investigate the impact of wind flow on heat source movement in simulated coal piles under varying wind velocities, an experimental stage was established. The research findings elucidate that both normal and tangential winds exert an influence on the heat source position, with normal winds exhibiting a greater effect than tangential winds. The relationship between heat source position speed and wind speed magnitude follows a common fitting function under both wind conditions. Specifically, the speed of the heat source at the edge position demonstrates a linear correlation with the magnitude of wind speed, while the speed of the heat source at the center position conforms to a quadratic function with the wind speed magnitude. The heat source moves at a distance of 0.8 cm to 5.3 cm on the Y = 0 tangent, corresponding to a moving speed of 0.03 cm/min to 0.18 cm/min. On theY = −20 tangent, the heat source moves at a distance of 2.1 cm to 8.1 cm, corresponding to a moving speed of 0.07 cm/min to 0.27 cm/min. Moreover, the study reveals that the influence on heat source movement at the center of the simulated coal pile diminishes as wind speed decreases under both wind conditions. These research findings provide a theoretical foundation for managing spontaneous combustion in coal piles and offer insights into precise management of heat source positions within coal piles.

Aesthetic sensitivity: relationship with openness to experience and agreeableness, health-related quality of life and adaptive coping strategies in people with high sensory processing sensitivity.

Aesthetic sensitivity in people with high sensory processing sensitivity (SPS) reflects the positive perception of life, especially aspects related to the arts and nature. This study is focused on the analysis of the effect of aesthetic sensitivity in relation to indicators of health-related quality of life (general health, mental health and emotional role), the personality traits openness to experience and agreeableness, and coping strategies in people with SPS. The adult participants (N = 10,520, mean age = 33.61) completed the Spanish versions of the High Sensitivity Person Scale (HSPS-S), Short Form Health Survey (SF-36), NEO Five Factor Inventory (NEO-FFI) and Coping Strategies Inventory (CSI). It was observed that people with high aesthetic sensitivity presented greater openness and agreeableness, tended to use adaptive coping strategies and showed a slightly poorer functioning in different areas of daily living. Moreover, health-related quality of life, mental health and adaptive coping strategies occupied central positions in the correlations between variables, with a positive impact between mental health and adaptive coping strategies with openness and agreeableness. Lastly, the level of aesthetic sensitivity did not play a moderator role, and it exerted no differential influence on its relationship with the analysed variables. Now, it has been found that people with high levels of aesthetic sensitivity cope more adequately, which would cushion the effect that high SPS can have on mental health, specifically on anxious and depressive symptoms. It is concluded that these findings are relevant and useful for future propositions of prevention and clinical intervention, as well as for counselling in the psychoeducational, labour and family scopes, amongst others.

Transverse Movement Kinetics of a Unit for Inter-Row Crops—Case Study: Cultivator Unit

Due to the negative impact of chemical inter-row weed control on the environment, mechanical weed control is increasingly used in practice. Machine-tractor units (MTU) are used with the row cultivator’s rear and frontal central position for its implementation. We have designed a unit in which side cultivators are used along with the central one. This paper considers the transverse movement kinematics of such an MTU’s outside right and left cultivators’ working devices in the horizontal plane. The present emulation of side machines is made by changing the longitudinal coordinate of their location relative to the tractor’s front and rear axles. Calculations have established that the frontal cultivator responds more intensively to the control action by changing the turning angle of the tractor’s steering wheels. However, if the value of this parameter is less than 2.75°, a rear-mounted cultivator is preferred, because in this case, the values of lateral deviations for the external, left, and right working device are smaller. When the turning angle of tractor wheels is from 1° to 3° (typical for MTU row work), a threefold increase in the working width of the cultivator causes a slight antiphase deviation in its external working devices (an increase or decrease in the amplitude of these deviations does not exceed 4%). The model that we have developed allows us to select the values of the MTU design parameters for which the lateral displacement will be very small (close to zero). As the turning angle of the tractor wheels increases to 3°, the external left and right working devices of the cultivators react inversely. This means that in the case of the rear machine, the values of lateral displacements increase, while in the case of the front machine, they decrease. At a turning angle of the tires of the tractor wheels close to 2.5°, the lateral displacements for the rear and front machines are the same.

Evaluating students’ computation skills in learning amount of substance based on SOLO taxonomy in secondary schools

ABSTRACT In upper-secondary chemistry education, the concept of ‘Amount of Substance’ occupies a central position within the computation framework. However, comprehending this concept often poses a challenge for students. To address this issue, our study aimed to design and implement a computation skills test to assess the varying levels of students’ computation skills in understanding Amount of Substance. The test was administered to a total of 214 first-year students at the secondary schools. To analyse the test scores and unveil students’ comprehensive and mastery levels of computation skills, the SOLO Taxonomy was employed for scoring the levels. Additionally, interviews were conducted to identify the underlying reasons for their learning difficulties. Findings revealed that the majority of students demonstrated proficiency in solving relatively straightforward problems and applying basic formulas. Only a small fraction of students reached the advanced relational level, showcasing their ability to apply chemical concepts and methodologies to solve complex problems. Moreover, students exhibited varying degrees of proficiency when dealing with different types of knowledge and problems associated with computations involving solutions and the quantification of microscopic particles. Interviews uncovered students’ major learning difficulties. These findings inform the teachers’ teaching of Amount of Substance in chemistry education.

Research on the spatial patterns and evolution trends of the coupling coordination between digital finance and sustainable economic development in the Yellow River Basin, China.

In the current global context, digital finance (DF) and sustainable economic development (SED) are important topics. The synergies between DF and SED have already been proven. However, the measurement and quantitative analysis of the coupling coordination degree (CCD) of DF and SED have not received sufficient attention to date. Based on data from 55 cities in the Yellow River Basin (YRB) from 2011 to 2021, this study constructs an evaluation index system of DF and SED and measures their level, respectively. The proposed CCD model is then used to measure the CCD between the two systems. In addition, kernel density estimation, Markov chain, σ-convergence, β-convergence, and the quadratic assignment procedure (QAP) method are used to study the spatial pattern, distribution dynamic evolution trend, convergence, and influencing factors of the regional differences in the CCD. The results show that: (1) From 2011 to 2021, the CCD level showed a stable upward trend and regional heterogeneity, and the time stage characteristics were more obvious. (2) The center position and change interval of the overall distribution curve of the kernel density estimation gradually shifted to the right. The Markov transfer probability matrix shows that the CCD is more stable among different levels, indicating a phenomenon of "club convergence". (3) A convergence analysis shows that there are significant σ-convergence, absolute β-convergence, and conditional β-convergence. (4) The QAP regression shows that factors such as the regional differences in GDP per capita have a significant impact on the regional differences in the CCD. This study offers a comprehensive structure that can be used to examine the synergistic effects between DF and SED; the research findings can also provide perspectives for other areas.

Spatiotemporal evolution and driving factors of tourism ecological adaptation in the Dongting Lake Area, China

Tourism ecological adaptation (TEA) offers a novel research framework and practical tool for analyzing sustainable regional development. This facilitates high-quality tourism development, safeguards the ecosystem, and enhances risk resilience. However, existing TEA research has shortcomings regarding methodology and research scales. This study constructed a TEA index system to address these deficiencies. The index system comprises two subsystems, tourism industry adaptation (TIA) and ecological environment adaptation (EEA), including three dimensions: sensitivity, stability, and response. The entropy-weighted TOPSIS method, adaptation assessment model, standard deviation ellipse, and geographic detector were used to analyze the spatiotemporal evolution and driving factors of TEA in the Dongting Lake area, China, from 2012 to 2021. The TIA index displays a rise-fall-rise pattern, whereas the EEA index demonstrates a fluctuating upward trend. Additionally, the TEA index exhibits a distinctive basin-type spatial distribution pattern, with lower values in the central region and higher values in the surrounding areas. Over the past decade, standard deviation ellipses of adaptability have shown minimal changes in shape, position, and center. Both the clustering and center positions reached a state of basic equilibrium. The predominant TEA type was characterized by low adaptation, including 41.18% of the counties. The spatiotemporal evolution of TEA is driven by tourism resource endowment, government regulatory efforts, level of economic development, and environmental governance capacity

Review on errors and transmission characteristics of the planetary roller screw mechanism

The planetary roller screw mechanism, a novel high-performance electromechanical servo drive component, holds a central position in leading-edge equipment, attracting significant attention within the engineering community. This paper conducts a comprehensive review of current research and recent breakthroughs in the analysis of errors and transmission characteristics associated with the planetary roller screw mechanism. Drawing on the unique attributes of this mechanism, the analysis of errors is undertaken from two distinct angles: motion errors and machining errors. A foundational examination of the bearing characteristics of this mechanism serves as the cornerstone for assessing its transmission properties. The report delves into the impact on transmission performance from the perspectives of both accuracy and efficiency. In this study, each model and related literature are exhaustively described and examined in detail. Furthermore, we critically evaluate the key discoveries emanating from various models and numerical simulations, shedding light on potential future directions in the realm of errors and transmission characteristics of the planetary roller screw mechanism.

A study of financial market resilience in China — From a hot money shock perspective

Given the huge impact of hot money on the China's financial market, it is crucial to evaluate and improve the ability to withstand such shocks. This paper measures the resilience of China's financial markets to hot money shocks, and examines the connectedness mechanism among submarket resilience. Our findings indicate that, first, China's overall financial market resilience is characterized by cyclical changes. Among all markets, the bond market exhibits the strongest ability to absorb shocks, while the real estate market shows the weakest. Second, there is a considerable association between financial submarket resilience, which is further strengthened by panic and pessimistic expectations in tail scenarios. The stock market holds the central position in the resilience connectedness structure and shows the greatest impact on other markets. This study suggests that focusing on real estate and stock market conditions is the key to accelerating financial market recovery from hot money shocks.

Trophic relationships between protists and bacteria and fungi drive the biogeography of rhizosphere soil microbial community and impact plant physiological and ecological functions

Rhizosphere microorganisms play a vital role in enhancing plant health, productivity, and the accumulation of secondary metabolites. Currently, there is a limited understanding of the ecological processes that control the assembly of community. To address the role of microbial interactions in assembly and for functioning of the rhizosphere soil microbiota, we collected rhizosphere soil samples from Anisodus tanguticus on the Tibetan Plateau spanning 1500 kilometers, and sequenced the bacteria, fungi, archaea, and protist communities. We observed a significant but weak distance-decay relationship in the microbial communities of rhizosphere soil. Our comprehensive analysis of spatial, abiotic, and biotic factors showed that trophic relationships between protists and bacteria and fungi predominantly influenced the alpha and beta diversity of bacterial, fungal, and protistan communities, while abiotic factors had a greater impact on archaeal communities, including soil pH, available phosphorus, total phosphorus and mean annual temperature. Importantly, microbial interactions had a more significant influence on Anisodus tanguticus physiological and ecological functions compared to individual microorganisms. Network analyses revealed that bacteria occupy a central position of the co-occurrence network and play a crucial role of connector within this community. The addition of protists increased the stability of bacterial, fungal, and archaeal networks. Overall, our findings indicate that trophic relationships play an important role in assembly and for functioning of the rhizosphere soil microbiota. Bacterial communities serve as a crucial link between different kingdoms of microorganisms in the rhizosphere community. These findings help us to fully harness the beneficial functions of rhizosphere microorganisms for plants and achieve sustainable use of biological resources.

Impact of Pacific blocking on the intraseasonal winter sea ice seesaw between the Bering and Okhotsk Seas

The winter sea ice cover (SIC) over the Bering Sea (BS) and Okhotsk Sea (OS) shows significant co-variability. In particular, a clear seesaw-like variability can be observed on an intraseasonal scale between the two seas. However, the mechanism by which the atmospheric circulation affects them is unclear and further insight is needed. In this study, based on reanalysis data from 1979 to 2019, we use composite analyses to examine the physical processes of atmospheric blocking that affect the intraseasonal seesaw SIC changes between OS and BS. The investigation reveals that Pacific blocking (PB) events can enhance the existing intraseasonal seesaw variation of the OS and BS SIC in winter. Based on the maximum core position of the anticyclonic center, we divide PB events into two subgroups: western PB and eastern PB. In addition, considering average zonal shifting speed, we further classify them into three subgroups: westward shifting PB, quasi-stationary PB and eastward shifting PB. Composite results show that the changes of SIC and surface air temperature (SAT) show different asymmetric characteristics for the different PB subgroups. Of the five PB regimes, the quasi-stationary PB is associated with the greatest reduction in SIC in the BS over its lifetime, both in magnitude and duration. Furthermore, we find that the local sea surface temperature (SST) anomaly upstream of the quasi-stationary PB, both during and prior to its onset, exhibits a significant dipole mode, along with a positive anomaly in the 300-hPa zonal wind. The SST dipole could serve as a precursor climatic background condition, likely triggering the occurrence of quasi-stationary PB and subsequently leading to intense SIC changes.

Atomically-dispersed manganese anchored on B,N co-doped carbon for the sensitive electrochemical detection of levodopa

Metal single-atom catalysts offer the dual advantages of high electrochemical activity and near 100 % metal atom utilization, leading to their potential use in low-cost electrochemical sensor development. Herein, a novel electrocatalyst comprising atomically-dispersed Mn on B,N co-doped bamboo-derived carbon (MnSAs-BN-BC) was synthesized via a facile pyrolysis procedure. A high dispersion of Mn single atoms in MnSAs-BN-BC was confirmed by aberration-corrected transmission electron microscopy and elemental mapping. The Mn loading in the MnSAs-BN-BC determined by inductively coupled plasma mass spectrometry was 255 mg kg−1. MnSAs-BN-BC displayed outstanding electrocatalytic performance for levodopa (LD) oxidation, allowing a robust electrochemical sensing platform for LD detection to be established. The MnSAs-BN-BC/GCE sensing platform offered a wide LD detection range (concentrations from 2 to 683 µM) and a very low limit of detection (LOD) of 0.45 µM, outperforming almost all electrochemical sensors reported to date for LD sensing. The MnSAs-BN-BC/GCE platform also featured outstanding repeatability, reproducibility, selectivity, and stability. The as-developed sensing platform was successfully applied to LD quantification in commercial tablets with satisfactory recoveries (85.2–102.4 %), with the analytical precision of method validated against a traditional UV–vis spectrophotometry method. Density functional theory (DFT) calculations showed that Mn single atom sites lowered the reaction energy barrier for LD oxidation, with the favorable d-band center position of Mn single atom sites in MnSAs-BN-BC contributing to the enhanced LD sensing performance. This work encourages the use of single-atom metal catalysts in design of high-performance electrochemical sensors for the rapid detection of LD.

Nineteenth-Century Richard Wagner: Unconventional Female Roles and Emerging Feminist Discourse

Operas of the 19th century adhered to realism, often drawing inspiration from real-life situations. In the social context of the era, women were often relegated to positions of weakness and lacked societal status, rendering them subject to the scrutiny of male perspectives. However, Richard Wagner's operas distinguished themselves by endowing female characters with prominence and authority. This article seeks to investigate Wagner's effective empowerment of women, focusing on the plot and role analysis of Brnnhilde, the female character from "Die Walkre." Subsequently, a combination of document analysis and literature review are synthesized, showing the diverse perspectives of scholars who have examined Wagner's individualism and his portrayal of female characters in his operas. Ultimately, it is apparent that the formidable female figures in Wagner's operas boldly challenge prevailing social norms, embodying the essence of love and redemption. While scholars hold varying interpretations regarding Wagner's approach to feminism, it is irrefutable that these non-traditional female characters occupy central positions in his works, infused with profound emotions and at the core of dramatic storytelling.

Raman study of the soft modification of graphene by femtosecond laser irradiation

AbstractProcessing a graphene surface by irradiation with a fs‐pulsed laser at energies below the ablation threshold allows the production of non‐thermally modified regions with slightly different properties than pristine graphene. Oxidized nanoislands, optical forging, and nanopore networks are modifications of the graphene structure recently reported using a wide range of fs‐laser energies. In this work, we first determined the pulse energy threshold of a fs‐laser for the ablation of a commercial CVD graphene sample. Then we irradiated the sample in an extended range of pulse energies relative to the ablation threshold value. The irradiation process was simultaneously monitored by Raman spectroscopy, and the evolution of each Raman parameter (central position, bandwidth, and intensity) was analyzed. Special attention was given to the pulse energy that produced linear relationships between most Raman parameter pairs. These linear correlations evidence the interrelation between multiple Raman parameters and a soft processing method applicable to the controlled modification of the graphene lattice.

Research on pressure transmission and sealing performance of pyrophyllite in a cubic large chamber static high-pressure device

Owing to the need for a hydrostatic high-pressure cubic large cavity (hexahedral top) press used in high-pressure research and production of superhard material, two kinds of pyrophyllite powder compacts (A and B) from pyrophyllite mine in South Africa are prepared, and compared with the domestic yellow pyrophyllite powder compacts (Mentougou, Beijing) produced by the same process, to establish experimental methods and physical criteria for evaluating the pressure transmission and sealing performance of pyrophyllite. During the experiment, standard pressure materials such as Bi, Tl, and Ba are used to <i>in-situ</i> calibrate the pressure at the central positions and sealing edges of the pyrophyllite pressure chambers from the three aforementioned compacts under normal pressure conditions. Additionally, the silver melting point method is employed to obtain the corresponding relationship between chamber pressure at high temperature and system loading when using these three types of pyrophyllite as load-transmitting sealing materials. The results show that under the same hydraulic pressure loading, the difference in pressure at the central position between South African pyrophyllite B powder blocks and domestically produced pyrophyllite powder blocks does not exceed 0.1 GPa. Furthermore, in pressurization process and depressurization processe, the differences in pressure between the central position and the sealing edge of the pyrophyllite blocks are notably similar. Compared with South African pyrophyllite A powder blocks, pyrophyllite B powder blocks exhibit a closer resemblance to domestically produced pyrophyllite powder blocks in terms of high-temperature load transmission and sealing performance. Pyrophyllite B powder blocks from South Africa have the potential to serve as a substitute for domestically produced pyrophyllite without changing the existing superhard material synthesis process, making them promising candidates for use as load-transmitting media and sealing materials. These research findings hold significant academic importance in the realms of high-pressure research and superhard material production. They provide valuable insights into the selection of suitable transmission and sealing materials and the optimization of high-pressure experimental conditions. Additionally, this study presents robust method and criteria for experimental procedures and performance assessment.