Typical Products Research Articles

Using a Biofeedback-Based Mindfulness Practice System to Enhance Mindfulness and Alleviate Anxiety in College Students: A Randomized Controlled Trial.

Objective: College students experience intense anxiety, for which biofeedback mindfulness techniques show effectiveness in relief. However, typical biofeedback products often lead to user fatigue and boredom because of a single or fixed feedback and lack of focus on mindfulness enhancement. Materials and Methods: In this research, we developed Mindjourney, a VR-based respiratory feedback mindfulness system, designed to enhance mindfulness and alleviate anxiety through continuous/noncontinuous feedback and nonjudgmental reward/punishment for self-perception and attention management. A randomized controlled trial involved 72 college students, split equally into short-term (n = 34, age: 23.11 ± 1.729) and 4-week long-term (n = 38, age: 24.12 ± 1.408) groups, with equal randomization for intervention and control groups. Pre/postintervention tests were measured by using Trait Anxiety Inventory (TAI) and Five Facet Mindfulness Questionnaire (FFMQ) for long-term groups and Galvanic Skin Response and State Anxiety Inventory (SAI) for short-term groups. Results: Results showed that the long-term intervention group showed a significant increase in mindfulness (P = 0.001 for FFMQ total score). Furthermore, observe and act with awareness subscales showed significant increase after intervention (P = 0.034 for observe, P < 0.001 for act with awareness) compared with the control group. Both intervention groups demonstrated a significant decrease in anxiety levels compared with the control groups (P = 0.049 for SAI, P = 0.01 for TAI). Moreover, participants expressed high interest in this biofeedback mindfulness system and willingness for long-term usage. Conclusion: The proposed biofeedback mindfulness practice system could potentially facilitate mindfulness practice and serve as a convenient tool for anxiety relief in campus college students.

Electron Beam Powder Bed Fusion of ATI C103TM Refractory Alloy

The study investigated the use of electron beam powder bed fusion (EB-PBF) to fabricate niobium ATI C103™ alloy articles for microstructural characterization and mechanical testing. The feedstock powder was consolidated into low-porosity articles, and both powder and sample chemistry were monitored. Oxygen uptake in the powder was limited to less than the ASTM B655/B655M (2018) specification limits for 7 uses. Manipulating vacuum chamber pressure showed stable hafnium content but decreasing titanium content with decreasing chamber pressure attributed to evaporation. AM samples were evaluated in the post-processed, as-fabricated, annealed, and hot isostatic pressing (HIP) condition with a maximum yield strength of 287 MPa, UTS of 375 MPa for the HIP, and maximum elongation of 32 pct for the annealed specimens, respectively. Mechanical properties are similar to typical wrought products, with a notable increase in yield strength after post-processing by HIP. The fracture behavior was driven by porosity in the as-fabricated specimens and grain boundary fracture after HIP.

The Role of Digital Marketing as a Strategy in Improving Wonosobo MSME Product Marketing

T Karangsari Village, Sapuran District, Kaabupaten Wonosobo is one of the villages in Wonosobo Regency that has the potential of a Tourism Village. With the increasing number of tourist visitors, it will increase the potential income for local village communities. Wonosobo Regency typical products have been widely known by the public, but since the occurrence of Covid 19 has caused a lack of tourist visitors visiting tourist sites in Karangsari Village, Sapuran District, Wonosobo Regency. This condition also has an impact on the quiet sales turnover of MSME products, especially in Karangsari Village, Sapuran District, Wonosobo Regency. One of the contributing factors is caused by the marketing model that is still carried out traditionally, so that when the Covid 19 pandemic occurred, it was very difficult for local entrepreneurs to survive running their businesses. Digital marketing is a business strategy that can be used when there are government policies related to social restrictions of the community. The purpose of this community service is to develop products and increase online sales, in order to increase marketing reach. The methods carried out are by: (1) providing training and socialization about the concept of Digital Marketing and its usefulness in business strategies, (2) utilizing digital marketing through social media.

Effect of fission products on the thermal conductivity of ThO2-A molecular dynamics study

Thermal conductivity (k), as an important thermal property of nuclear fuels, would be deteriorated due to fission products. Therefore, to investigate the effect of fission products on the thermal conductivity of nuclear fuels is essential. Two typical fission products: Xe and Kr with 0–2 % concentration are considered in this work. The lattice constants (L) of ThO2 increase due to fission products at all testing temperatures. The extent of increase in L due to Xe interstitials is the maximum. The fission products significantly reduce the thermal conductivity of ThO2. The extent of reduction in thermal conductivity of ThO2 by the defects follows the trend Xe (interstitials) > Xe (substitutional defects) > Kr (substitutional defects) > Kr (interstitials). Finally, the full-filled Xe/Kr bubble has a nearly identical thermal conductivity as an empty void or half-filled Xe/Kr bubble. The underlying reason may be that the thorium atoms have a lower mobility than uranium atoms. These calculated values can be used to predict the thermal properties of the irradiated ThO2.

Nitrogen-doped carbon nanotube catalytic membrane with peroxymonosulfate activation for the degradation of metronidazole and bisphenol A: Performance and mechanism comparison

As typical pharmaceuticals and personal care products (PPCPs), metronidazole (MNZ) and bisphenol A (BPA) normally presented in sewage effluent and surface water. The nitrogen-doped multi-walled carbon nanotube (NCNT) membrane was prepared and utilized as a peroxymonosulphate (PMS) catalyst to degrade MNZ and BPA. Within the NCNT membrane/PMS catalytic system, MNZ and BPA can be efficiently degraded, while different catalytic degradation mechanism exists related with their structure, adsorption properties and even PMS dosage. The optimal conditions for the degradation of MNZ and BPA were investigated. Quenching tests and electron paramagnetic resonance examination demonstrated that •OH radicals and 1O2 played roles in MNZ degradation, while surface-bound radicals and 1O2 dominated BPA degradation within the NCNT membrane catalytic PMS system. Electrochemical tests proved that an electron-transfer process between NCNT membrane and PMS during MNZ degradation, and the electron-transfer process was further verified with the degradation experiment in the binary-solute system (BPA and MNZ). PMS dosage had little influence on the degradation mechanism of MNZ and BPA.

Online Compositional Analysis of Complex Oligomers in Biomass Degradation by High-Pressure Flow-Through Reactor Coupled with High-Resolution Mass Spectrometry.

Online analysis of the composition and evolution of complex oligomeric intermediates in biomass degradation is highly desirable to elucidate the mechanism of bond cleavage and study the effect of conditions on the selective conversion of feedstocks. However, harsh reaction conditions and complicated conversion systems pose tremendous challenges for conventional, state-of-the-art analytical techniques. Herein, we introduce a continuous and rapid compositional analysis strategy coupling a high-pressure flow-through reactor with online high-resolution mass spectrometry, which enables the molecular-level characterization of most biomass-related products throughout the conversion for over 2 h. Catalytic depolymerization of one model compound was studied, and temperature-dependent data of over 50 intermediates as well as recondensation dimers and oligomers were obtained, which have rarely been reported in the literature. Thousands of products during the flow-through conversion of birch wood with molecular weights up to 1000 Da were presented, and 8 typical lignin dimers and oligomers with various interunit linkages were identified at the molecular level, demonstrating the potential to analyze more complicated systems far beyond conventional methods, especially for complex oligomers. The continuous evolutions of different components and typical products were unveiled for the first time, providing valuable insights into the investigation of the structure, composition, and decomposition mechanism of lignocellulose as well as the influence of reaction conditions. This method leads to the previously unattained ability to probe and reveal complicated chemical compositions in high-pressure reactions and can be applied to all other high-pressure heterogeneous aqueous reactions.

Identification of Tourism-Based MSME Marketing Management Strategies

Sugihwaras Village is a village located in Ngancar District, Kediri Regency. The Sugihwaras Village area includes plantation areas, forestry areas and the Mount Kelud Tourism Area, which means that some economic activities take place in the agricultural and tourism sectors. A well-known agricultural commodity is pineapple with a typical mainstay product, namely "kelud “Madu” pineapple". The superiority of commodities and the implementation of tourism activities in the Mount Kelud Tourism Area has created new job opportunities, namely Kelud “Madu” Pineapple Traders. In practice, Kelud “Madu” pineapple traders are part of Micro, Small and Medium Enterprises (MSMEs) and as an aspect of Tourism Amenities to support tourism activities in the Mount Kelud Tourism Area. The Kediri Regency Government also supports the potential of “Madu” pineapple in Sugihwaras Village by holding a Pineapple Festival to develop and commercialize the potential of kelud “Madu” pineapple. However, the government's objectives are still not in line with the conditions of MSMEs selling kelud “Madu” pineapples. Therefore, this research seeks to examine marketing management by Kelud “Madu” pineapple traders as supporters of the Mount Kelud Tourism Area. This research uses a qualitative method with an exploratory descriptive approach. Data collection techniques use interviews, observation and documentation. Data analysis consists of data collection, data condensation, data presentation, and drawing conclusions. The research results show that marketing by kelud “Madu” pineapple traders is considered to be quite good in terms of potential, personal, operational, relationship and interaction management. The obstacles encountered by kelud “Madu” pineapple traders are related to the provision of facilities, high purchasing prices, and declining sales. Efforts made by the government include organizing festivals and community training, but there is a need for capital assistance for traders.

Rfid Based Shopping Cart Using Iot

In this living environment, technology is constantly advancing in a variety of domains, including artificial intelligence, machine learning, virtual reality, touch commerce, the Internet of Things, and many more. The primary objective of the project is to concentrate on the requirements and objectives of the customers, as time is of greater significance to all individuals in the actual world. On the other hand, consumers spend more time in the grocery store. It is common practice for customers to use a shopping cart to purchase a variety of things when they are at the supermarket. After making a purchase, consumers are confronted with several challenges, such as standing in a lengthy queue at the billing area and being unaware of the computation of the things that they have purchased. As a result, we may take into consideration these issues in order to discover solutions that are referred to as "IoT- Based Smart shopping trolley with automated billing." As a result, the typical product scanning that takes place at the counter is eliminated, which speeds up the overall shopping experience. In addition, the consumer will be aware of the entire amount that is owed on their account, allowing them to plan their shopping appropriately, ensuring that they only buy the necessities, so boosting their savings. Because every step of the billing process is automated, the possibility of making a mistake due to human intervention is drastically decreased. In order to further enhance the shopping experience of the consumer, the system also includes a function that gives the user the ability to remove the goods that have been scanned

UTILITY OF THE INTARAN MARKET IN THE CONTINUITY OF MICRO AND SMALL BUSINESSES TYPICAL OF BULELENG DISTRICT PRODUCTS

The Buleleng Regency, located in the Province of Bali, Indonesia, is known for its unique and diverse range of products. Micro, Small, and Medium Enterprises (MSMEs) are the backbone of the local economy, and the sustainability of these Micro, Small, and Medium Enterprises (MSMEs) depends heavily on various factors, including the intaran market. The intaran market serves as a showcase for displaying and marketing products of Micro, Small, and Medium Enterprises (MSMEs) and the creative economy located in Bengkala Village, Kubutambahan District, Buleleng Regency, Bali. The intaran market operates every Sunday and offers a wide variety of processed goods, handicrafts, creative products, and rarely found foods. The intaran market operates within a smaller geographic scope and plays a significant role in the local economic ecosystem. This research is supported by data collection techniques such as observation, interviews, and documentation, and uses a qualitative descriptive approach to explore and understand how the local market influences the continuity of Micro, Small, and Medium Enterprises (MSMEs) producing typical products of Buleleng Regency.

Exploring the Penetration of Traditional Cultural Elements in Film Art

Film is a typical cultural product, which can not only create huge economic benefits for the society, but also fully demonstrate the artistic aesthetic effect, and its vivid communication content and image expression have a profound impact on the values of the general public. With the change of science and technology, the infiltration of traditional cultural elements in film art can provide the public with attractive cultural forms, so it is necessary to systematically summarize the manifestations of traditional cultural elements, and then find a strategy to effectively penetrate traditional cultural elements in film art, which is only for the reference and analysis of industry insiders.

Pollution levels and ecological risks of PPCPs in water and sediment samples of Danjiangkou Reservoir.

The concentrations and distribution patterns of three typical pharmaceuticals and personal care products (PPCPs) in water and sediment samples obtained from Danjiangkou Reservoir during two seasonal sampling periods were studied to determine their impact on water quality. The temporal and spatial variations in concentrations measured were analyzed and related to ecological risks with data obtained during the mean-flow period (in June) and the dry period (in November). We found a high detection rate of ketoprofen (KTP) in water samples from Danjiangkou Reservoir; the concentrations ranged from not detected (ND) to 46.80ng/L with the highest values measured in the Hanku tributary samples followed by the samples collected in the main body of Danjiangkou Reservoir. The KTP concentrations in the Danku tributary samples were the lowest measured in this study. In addition, the concentrations of KTP in the Shending River, Sihe River, Jianghe River, Guanshan River, and Jianhe River water samples were relatively high in the mean-flow period. The water sample detection rates and concentrations of triclosan (TCS) and triclocarban (TCC) were low in both the mean-flow period and the dry period. All three kinds of PPCPs were detected in the sediment samples with the concentrations of KTP, TCS, and TCC ranging from 0.76 to 7.89μg/kg, 0.01 to 0.59μg/kg, and 0.01 to 11.36μg/kg, respectively. Overall, the concentrations of the three measured PPCPs in the water and sediment samples were all relatively low compared to results reported in the recent literature. The dry period concentrations of PPCPs in the water samples were lower than the concentrations measured in the mean-flow period. However, dry period concentrations were higher in the sediment samples compared to those in the mean-flow period samples. Our interpretation of the spatial and temporal patterns of PPCPs in Danjiangkou Reservoir suggests that these compounds were likely mainly derived from wastewater discharge in the upper reaches of the reservoir. The risk quotient (RQ) method was used for an ecological risk assessment of the detected PPCPs in this study. We found that TCS in water and sediment posed medium ecological risks to algae at different times of the year. In view of the extreme importance of water safety in Danjiangkou Reservoir, the ecological risks of PPCPs require additional attention.

Extraction of Nano Hydroxyapatite from Eggshell and Characterization for Biomedical Applications

Because of the exceptional qualities, nano-hydroxyapatites, or n-HA, are excellent materials for diverse applications. It is simple and convenient to synthesize from various natural ingredients. The synthesis of n-HA from eggshells, a typical domestic waste product in the neighborhood, was the primary goal of this study project. This synthesis of n-HA was performed using ammonia and orthophosphoric acid as chemical reagents. The synthesized n-HA have been characterized by UV (Ultraviolet), FTIR (Fourier Transformed Infrared Spectroscopy), SEM (Scanning Electron Microscopy), TEM (Transmission Electron Microscopy), and XRD (X-ray diffraction) analysis. The peak formed by the UV analysis verified the successful formation of n-HA in the solution. The bandgap has been determined through additional research on the UV data. The SEM and TEM images show the size and form of the synthesized n-HA. Based on TEM observations, the synthesized n-HA has a size in the range of 10 to 40 nm. The peak ensures the n-HA’s crystallinity that the XRD analysis produced. The obtained crystallinity was 74%.

Recycling Product Model and Its Application for Quantitative Assessment of Product Recycling Properties

The consideration of environmental factors is common in current product design. For the purpose of the assessment of recycling properties of a product, quantitative measures have been defined in the literature. The main obstacle in using these measures in practical design is lack of data in typical product models. In this article, a Recycling Product Model (RPM) is presented. The RPM enables calculations of quantitative assessment measures defined in the literature directly from a CAD 3D product model. The term RPM and elements of the RPM are described. The functionality of the software dedicated for the RPM is presented. The use of the RPM is demonstrated based on a case study of an actual CAD 3D product model. The article concludes by outlining the potential use of the RPM for other purposes; the limitations of the RPM are elucidated in the conclusions of the article.

Experimental analysis of the wear behavior of total knee endoprostheses with bovine serum and synthetic synovial fluid as lubricants

For preclinical wear testing of total knee endoprostheses bovine serum as lubricant is recommended. Recent studies address the suitability of bovine serum as a lubricant due to its different properties compared to human synovial fluid. Therefore, wear tests according to ISO 14243 with synthetic synovial fluid vs. bovine serum as lubricants were performed in present study. The polyethylene inserts showed similar and typical wear patterns and products with both lubricants. However, higher wear rates were measured with synthetic synovial fluid as lubricant. In general, synthetic synovial fluid seems suitable for preclinical wear testing of total knee endoprostheses.

Highly selective PAN@MOFs composite nanofiber for removal of C4F7N/CO2 harmful decomposition products

Perfluoroisobutyronitrile (C4F7N) mixed with CO2 has emerged as a promising eco-friendly alternative to sulfur hexafluoride (SF6) in gas-insulated equipment (GIE). However, thermal or discharge faults in GIE inevitably lead to the generation of harmful decomposition by-products, necessitating their prompt removal to safeguard equipment operation and personnel safety. In this study, we propose a nanofiber composite material comprising polyacrylonitrile (PAN) as the base and multi-metal organic frameworks (MOFs) as the primary adsorbent material for removing typical decomposition components of C4F7N/CO2 gas mixture. Utilizing grand canonical Monte Carlo (GCMC) and molecular dynamics (MD) simulations, we elucidate the selective adsorption mechanisms. Experimental results show that PAN@HKUST-1(Cu) exhibits superior adsorption efficiency for fluorocarbon gases compared to PAN@MIL-101(Cr), while the latter demonstrates better performance for nitrile gases. The PAN@HKUST-1(Cu)/MIL-101(Cr) composite adsorbent effectively removes eight typical harmful decomposition products while minimally affecting C4F7N. Our findings suggest that PAN@HKUST-1(Cu)/MIL-101(Cr) nanofiber film holds promise as an adsorbent for C4F7N/CO2 based GIE.

The Humanistic Process and Spatial Practice of Chinese Zhenshan 鎮山 Worship

The “Zhenshan” 鎮山 (which means a mountain that guards a certain territory) system is based on the traditional Chinese view of nature, which formed and developed through a long period of Confucian humanistic construction. It is the typical representation of China’s nature-oriented worship space, and it has unique spatial order and spatial significance in the world’s sacred mountain worship. The excavation of the spatial characteristics of Zhenshan worship and its network of humanistic meanings is an important part of research that aims to discover the traditional Chinese values of nature, religious views, and Chinese worship space. Based on the analysis of graphic historical materials and a digital chronicle literature review, this paper quantitatively analyzes the historical information of Zhenshan and summarizes the process of change from the birth of the concept of Zhenshan in the Zhou dynasty to the formation of the sacrificial system in the Han dynasty and its gradual localization after the Tang and Song dynasties with an analysis of its spatial pattern and characteristics of worship. The results show that Zhenshan is one of the typical cultural symbols of the transformation of Chinese mountain worship into the unity of government and religion. And it is a typical product of Confucianism, in which the worship of nature in China is integrated into the political system, and its worship space is rooted in the national, regional, and urban spaces at multiple levels. The Zhenshan system, in the course of its dynamic development, has formed two types of worship space: temple sacrificial and metaphorical constraint, constructing a Chinese worship space based on the order of nature, which is distinctly different from the inward-looking religious space of the West and the sacred mountain worship space formed around the religion of the “supreme god”.

The Physics of Core-Collapse Supernovae: Explosion Mechanism and Explosive Nucleosynthesis

Recent developments in multi-dimensional simulations of core-collapse supernovae have considerably improved our understanding of this complex phenomenon. In addition to that, one-dimensional (1D) studies have been employed to study the explosion mechanism and its causal connection to the pre-collapse structure of the star, as well as to explore the vast parameter space of supernovae. Nonetheless, many uncertainties still affect the late stages of the evolution of massive stars, their collapse, and the subsequent shock propagation. In this review, we will briefly summarize the state-of-the-art of both 1D and 3D simulations and how they can be employed to study the evolution of massive stars, supernova explosions, and shock propagation, focusing on the uncertainties that affect each of these phases. Finally, we will illustrate the typical nucleosynthesis products that emerge from the explosion.

Differentiating Three-Dimensional Molecular Structures Using Laser-Induced Coulomb Explosion Imaging.

Coulomb explosion imaging (CEI) with x-ray free electron lasers has recently been shown to be a powerful method for obtaining detailed structural information of gas-phase planar ring molecules [R. Boll et al., X-ray multiphoton-induced Coulomb explosion images complex single molecules, Nat. Phys. 18, 423 (2022).NPAHAX1745-247310.1038/s41567-022-01507-0]. In this Letter, we investigate the potential of CEI driven by a tabletop laser and extend this approach to differentiating three-dimensional structures. We study the static CEI patterns of planar and nonplanar organic molecules that resemble the structures of typical products formed in ring-opening reactions. Our results reveal that each molecule exhibits a well-localized and distinctive pattern in three-dimensional fragment-ion momentum space. We find that these patterns yield direct information about the molecular structures and can be qualitatively reproduced using a classical Coulomb explosion simulation. Our findings suggest that laser-induced CEI can serve as a robust method for differentiating molecular structures of organic ring and chain molecules. As such, it holds great promise as a method for following ultrafast structural changes, e.g., during ring-opening reactions, by tracking the motion of individual atoms in pump-probe experiments.

Study on the pyrolysis characteristics and char gasification kinetics of pre-separated automobile shredder residues

Automobile shredder residue (ASR) is a typical solid waste produced by the end-of-life automobile industry. The pyrolysis and gasification of ASR are effective methods to achieve reduction and resource utilization. By means of thermogravimetric analysis and fixed-bed experiments, the distribution as well as physicochemical properties of five typical ASR pyrolysis products after pre-sorting were systematically investigated, and the gasification kinetics of their pyrolysis char under CO2 as well as steam were also studied. Results showed that the pyrolysis of ASR was basically completed at 500°C, and the pyrolysis gas yield increased significantly with temperature. The tar contained mainly poly-benzene rings with carbon atoms C11–15 and their derivatives. At high temperatures, the structure of pyrolysis char tended to become more ordered, with small functional group such as - OH, - NH, - CH3, - CC -, and - COOH fracturing. The residual amounts of heavy metals such as Cr, Pb, and Ni in pyrolysis char were mostly exceed 45%, which were significantly affected by the type of heavy metals, pyrolysis temperature and material type. Hydrogen production from steam gasification accounted for up to 65%, and the gasification reactivity was better than that of CO2 gasification. The activation energy (E) calculated through shrinking core model (SCM) and random pore model (RPM) was 38.81–105.44 kJ/mol and 39.53–98.56 kJ/mol, respectively, which provided a good fit to the gasification kinetics in two gasification atmospheres. This study provides detailed data for the ASR pyrolysis and gasification technology, which is an important reference value for ASR research.

Deformation characteristics and reactivated failure modes of the massive Baimu ancient landslide deposit on the northern margin of the East Himalayan syntaxis

AbstractIn the Eastern Himalayan syntaxis, massive Quaternary loose deposits represent a typical product of abrupt topographic changes. Influenced by the Qinghai‐Tibet Plateau uplift and rapid river incision, the partial or complete failure of these deposits is a recurrent phenomenon in alpine‐gorge regions, posing substantial threats to major infrastructure development. Through topographic interpretation and field investigation, this study clarifies the geological features and genetic mechanisms of the Baimu ancient landslide deposit (BALD), located on the northern margin of the East Himalayan syntaxis. The surface deformation time series spanning October 2017 to December 2019 was estimated using employing multitemporal synthetic aperture radar interferometry. Then, the spatiotemporal deformation characteristics of the BALD was analysed by superposing terrain factors, and hazard division was implemented. The results indicate that high‐hazard zones are mainly distributed on high and steep free faces of the BALD. Deformation evolution and rainfall time series showed obvious correlation. Lastly, a generalized failure model is established for the BALD, which will serve as a valuable reference for disaster prevention and is applicable to the study of similar deposits in the Qinghai‐Tibet Plateau.