Galaxy evolution studies require the measurement of the physical properties of galaxies at different redshifts. In this work, we build supervised machine learning models to predict the redshift and physical properties (gas-phase metallicity, stellar mass, and star formation rate) of star-forming galaxies from the broad-band and medium-band photometry covering optical to near-infrared wavelengths, and present an evaluation of the model performance. Using 55 magnitudes and colors as input features, the optimized model can predict the galaxy redshift with an accuracy of σ(Δz/1+z) = 0.008 for a redshift range of z < 0.4. The gas-phase metallicity [12 + log(O/H)], stellar mass [log(Mstar)], and star formation rate [log(SFR)] can be predicted with the accuracies of σNMAD = 0.081, 0.068, and 0.19 dex, respectively. When magnitude errors are included, the scatter in the predicted values increases, and the range of predicted values decreases, leading to biased predictions. Near-infrared magnitudes and colors (H, K, and H −K), along with optical colors in the blue wavelengths (m425–m450), are found to play important roles in the parameter prediction. Additionally, the number of input features is critical for ensuring good performance of the machine learning model. These results align with the underlying scaling relations between physical parameters for star-forming galaxies, demonstrating the potential of using medium-band surveys to study galaxy scaling relations with large sample of galaxies.

Iron oxide (ε-Fe2O3) is emerging as a promising electromagnetic material due to its unique magnetic and electronic properties. This review focuses on the intrinsic properties of ε-Fe2O3, particularly its high coercivity, comparable to that of rare-earth magnets, which is attributed to its significant magnetic anisotropy. These properties render it highly suitable for applications in millimeter wave absorption and high-density magnetic storage media. Furthermore, its semiconducting behavior offers potential applications in photocatalytic hydrogen production. The review also explores various synthesis methods for fabricating ε-Fe2O3 as nanoparticles or thin films, emphasizing the optimization of purity and stability. By exploring and harnessing the properties of ε-Fe2O3, this study aims to contribute to the advancement of next-generation electromagnetic materials with potential applications in 6G wireless telecommunications, spintronics, high-density data storage, and energy technologies.

목적 : 본 연구의 목적은 근적외선 차단 안경렌즈의 광학적 특성을 분석하고, 근적외선 차단 안경렌즈를 이해하는 데 도움이 되는 자료를 제시하는 것이다. 방법 : 근적외선 차단 안경렌즈(소재 방법 및 코팅 방법)와 일반 렌즈를 시감투과율 0, 2, 3등급( 10종)으로 구 분하여, 250∼1,400 nm의 분광 투과율을 측정하였고, 청색광 및 근적외선 차단율을 산출하였다. 또한, 주행 중 교통 신호등 감지에 대한 적합도를 확인하기 위해 상대 시각 감쇄 계수(Q)를 분석하였다. 결과 : 시감투과율 분류 0, 2, 3등급에서 투과율은 일반렌즈가 근적외선 차단 안경렌즈보다 높았다(p<0.05). 410∼470 nm 영역에서 근적외선 차단 안경렌즈와 일반렌즈의 청색광 차단율은 차이가 없었고(p>0.05), 470 nm ∼500 nm 영역의 0, 2, 3등급은 차이가 있었다(p<0.05). 근적외선(780 nm∼1,400 nm) 영역의 차단율은 0, 2, 3등급에서 근적외선 차단 안경렌즈가 일반 렌즈에 비해 높았고(p<0.05), 근적외선 차단 성능이 더 우수함을 입증 하였다. 근적외선의 침투로 인해 영향을 받는 눈과 피부 영역에서 근적외선 차단 안경렌즈는 일반 렌즈보다 차단율 이 높았고(p<0.05), 일반렌즈 보다 근적외선의 침투를 감소시킬 수 있을 것이다. 동일한 차단율의 0등급 근적외선 차단 안경렌즈는 소재 방식보다 코팅방식 차단 렌즈의 차단 성능이 좋았다(p<0.05). 시감투과율 0, 2, 3등급에서 근적외선 차단 안경렌즈는 주행 중 교통 신호등 감지를 위한 색 구별에 적합했다. 결론 : 시감투과율 분류 0, 2, 3등급에서 근적외선 차단 안경렌즈는 일반 렌즈에 비해 높은 차단율을 나타내어 그 성능을 입증하였고, 근적외선의 영향을 받는 눈과 피부의 파장 영역에서도 근적외선의 침투를 감소시킬 수 있을 것이다. 결과적으로, 근적외선 차단 안경렌즈의 광학적 특성에 대해 이해하는데 도움이 되는 자료를 제공하였다.

For centuries, humans have leveraged the health-promoting properties of plants for our well-being. While research has been conducted on numerous medicinal plants, the specific benefits of many species remain underexplored. Eupatorium Japonicum (EJ), a member of the Asteraceae family, has historically been consumed in Japan, South Korea, China, and Vietnam for its traditional use in soothing digestive issues. This study aimed to explore the radical scavenging and antiinflammatory efficacy of EJ extract using RAW 264.7 cells. The radical-scavenging effects were assessed using the DPPH and ABTS assays, where an anti-oxidative molecule in the test sample will react with a stable free radical in DPPH and ABTS causing discoloration. The anti-inflammatory efficacy was assessed using the nitric oxide (NO) assay in LPS-induced RAW 264.7 cells, where the amount of NO produced in response to infection was measured using Griess reagent. Reversetranscriptase polymerase chain reaction (RT-PCR) and real-time PCR were executed to confirm the anti-inflammatory activity by measuring the RNA levels of pro-inflammatory cytokines. The DPPH and ABTS assays revealed that EJ extract decreased oxidation in a concentration-dependent manner (7.8-1,000 μg/mL) compared to ascorbic acid and Trolox respectively. EJ extract significantly reduced NO production concentration independently. Furthermore, EJ extract showed no cytotoxic effects as determined through the MTT assay. RT-PCR and real-time PCR analyses revealed inhibition of mRNA expression of pro-inflammatory cytokines (iNOS, COX-2, TNF-α, and IL-6). Western blotting demonstrated EJ’s anti-inflammatory activity by reducing protein levels of iNOS, COX-2, TNF-α, and IL-6. These findings suggest that EJ extract exhibits anti-inflammatory activities and can be further evaluated in the future.

Following the previous study, which investigated the pharmacological properties of the Technekitty injection (Tc-99m), the toxicity of a single intravenous administration of the Technekitty injection (Tc-99m) and the side effects that may occur at the diagnostic dose were confirmed. The Technekitty injection (Tc-99m) was administered intravenously once at a dose of 0, 0.67, 2.0, and 6.0 mCi/kg to 5 male and female rats per group. Mortality, general symptom observation, and weight measurement were performed for 2 weeks, followed by observation of autopsy findings. There were no deaths, and no statistically significant weight change was observed. No abnormal systemic signs related to the Technekitty injection (Tc-99m) were observed. These results confirmed that Technekitty injection (Tc-99m) can be safely administered intravenously at doses up to 6.0 mCi/kg. Additionally, technetium-99m at an average dose of 2 mCi (74 MBq) has been verified as a diagnostic dose without adverse effects, allowing the Technekitty injection (Tc-99m) to be used safely without side effects at this dosage. This study demonstrates that the Technekitty injection (Tc-99m) has a wide safety margin, supporting its potential for clinical application. Moreover, these findings align with the nonclinical safety standards for radiopharmaceuticals, reinforcing its utility in veterinary medicine. The Technekitty injection (Tc-99m) is expected to be applicable for clinical diagnosis as a veterinary drug in Korea.

Thyroid scanning using technetium-99m (99mTc) is the gold standard for diagnosing feline hyperthyroidism. In cats with an overactive thyroid, a thyroid scan is the most appropriate imaging technique to detect and localize any hyperfunctional adenomatous thyroid tissue. In this study, the pharmacological properties of the Technekitty injection (Tc-99m), developed as a diagnostic agent for feline hyperthyroidism using 99mTc as an active ingredient, were tested in FRTL-5 thyroid follicular cell line and ICR mice. The percentage of cell uptake of the Tc-99m in FRTL-5 thyroid cells was 0.182 ± 0.018%, which was about 6 times higher compared to Clone 9 hepatocytes. This uptake decreased by 38.2% due to competitive inhibition by iodine (sodium iodide). In tissue distribution tests by using ICR mice, the highest distribution was observed in the liver, kidneys, spleen, lungs, and femur at 0.083 hours after administration, and this distribution decreased as the compound was excreted through the kidneys, the primary excretory organ. Maximum distribution was confirmed at 1 hour in the small intestine, 6 hours in the large intestine, and 2 hours in the thyroid gland. Additionally, the total amount excreted through urine and feces over 48 hours (2 days) was 78.80% of the injected dose, with 37.70% (47.84% of the total excretion) excreted through urine and 41.10% (52.16% of the total excretion) through feces. In conclusion, the Tc-99m has the same mechanism of action, potency, absorption, distribution, metabolism, and excretion characteristics as 99mTc used for feline hyperthyroidism in the United States, Europe, and other countries, because the Technekitty injection (Tc-99m) contains 99mTc as its sole active ingredient. Based on these results, the Technekitty injection (Tc-99m) is expected to be safely used in the clinical diagnosis of feline hyperthyroidism.

Background: Hallux valgus (HV) is a common foot deformity in which the great toe deviates laterally and the first metatarsal deviates medially, leading to pain, discomfort, and reduced mobility. HV severity is typically assessed using the hallux valgus angle (HVA) and intermetatarsal angle (IMA). Objects: This study aimed to explore how changes in skeletal, muscular, and functional variables correlate with HV severity and to provide evidence for more integrated treatment approaches. Methods: Sixty volunteers with mild to moderate bilateral HV (HVA 15–40 degrees) participated. The measurements included HVA and IMA via radiography, abductor hallucis muscle (AbdH) cross-sectional area (CSA) and tone using ultrasound and Myoton PRO, range of motion (ROM) of the ankle and great toe metatarsophalangeal (MTP) joint with a goniometer, and plantar pressure during gait with a Zebris FDM system. Pearson’s correlation coefficient was used for the statistical analysis. Results: An Increased HVA was associated with a higher IMA (r = 0.858, p < 0.05). The HVA was inversely related to the AbdH CSA (r = –0.337, p < 0.05) and muscle tone (r = –0.889, p < 0.01). With increasing HVA, dorsiflexion ROM of the ankle (r = –0.307, p < 0.01) and both flexion (r = –0.197, p < 0.05) and extension (r=-0.182, p<0.05) ROM of the great toe MTP joint decreased. Conversely, ankle plantar flexion ROM increased with the HVA (r = 0.312, p < 0.01). Additionally, plantar pressure increased in the second metatarsal areas (r = 0.457, p < 0.05) a with higher HVA. Conclusion: This study demonstrates significant correlations between HV severity and various biomechanical factors, highlighting the need for comprehensive treatment strategies. While stretching the adductor hallucis muscle and strengthening the AbdH have been widely recognized interventions for HV, our findings provide evidence that ROM exercises for the ankle and the MTP joint of the great toe are also critical components of a physical therapy program for managing HV. Longitudinal studies are required to assess the effectiveness of these approaches.

This study investigated the spatial distribution of dissolved organic carbon and the changes in tidal flat soil characteristics following the flooding season in the closed estuary of the Geumgang River basin. We found that after the flooding season, a brackish water area expanded due to increased river discharge, which also introduced low concentrations of dissolved organic carbon from the river. Dissolved inorganic carbon predominantly originated from the sea in proportion to salinity, indicating that in the closed estuary area, dissolved carbon supplied from the sea remained a significant source even after the flooding season. Additionally, a substantial amount of tidally transported silt and clay was deposited near the estuary dam after the flood, and its effects continued to influence the sediment characteristics downstream in the intertidal zone. As an empirical study in the closed estuary, our results are expected to contribute to conservation measures for the World Heritage Site in the area.

Cold-pressed rapeseed oil (CPRO) is a rich source of bioactive components, but it is more susceptible to deterioration due to absence of chemical refining. Proper storage conditions are essential to maintain oil quality. This study evaluated the quality properties of seed-stored oil (SSO) and oil-stored oil (OSO) under various storage conditions. Both the seeds and the CPRO obtained from the ‘Jungmo7001’ and ‘Yuryeo’ varieties were stored for 24 months at 4℃, 25℃, and ambient temperature (AT). After 24 months, the acid value (AV) at 4℃ was lower than at 25℃ and AT. Additionally, the AV increased by 3.0-fold in SSO and 1.9-fold in OSO at AT compared to initial storage levels. OSO was found to be relatively more stable against oxidation than SSO. The canolol content in SSO increased with both storage temperature and period, but this was not observed in OSO. However, no changes in fatty acid composition or tocopherol content were noted based on the storage conditions, indicating that these properties remained relatively stable during storage. These results provide foundational data for the stable distribution of CPRO.

In this study, copper oxide, manganese oxide and zeolite, clays containing catalysts were prepared to remove hydrogen sulfide emitted in odor of industry. In order to change the heat treatment temperature, a catalyst was prepared 100 degrees from 600 degrees to 1,000 degrees. GC-MS was used to confirm the hydrogen sulfide removal performance. Although the removal performance produced at 600 degrees was maintained by and large, the removal performance decreased as the temperature increased. In particular, the catalyst manufactured at 900 and 1000 degrees had low removal performance. To find out the cause of the decrease in removal performance, the analytical devices XRD, BET, XRF were used. In order to confirm the properties of the catalyst before and after adsorption, SEM-EDS and CS were used. As a result of analyzing the Cu-Mn catalyst, it was confirmed that the material was adsorbed on the surface. To confirm the adsorbent material, SEM-Mapping was employed. And it was verified that the sulfur was adsorbed. Measuring the SEM-EDS 3Point, it was confirmed to be about 25.09%. Another test method CS analyzer (Carbon/Sulfur Detector) was also deployed. As a result of the test, sulfur was confirmed to be about 27.2%. So comparing the two sets of data, it was verified that sulfur was adsorbed on the surface.

Biomimetic study is being conducted in various fields and applied to the development of technology for the realization of a sustainable society. In this study, we analyzed the cuticular surface structure and wax layer composition of the leaves of Myriophyllum verticillatum and Azolla imbricata to investigate the antifouling characteristics. Field emission scanning electron microscopy analysis (FE-SEM) and contact angle measurement revealed that the surface of M. verticillatum had an irregular and curved layered structure with non-directional filament structures and showed high hydrophobicity. On the leaves of A. imbricata, amphiphilic structures with nano-sized hydrophobic plate-like filament structures and micro-sized irregular hydrophilic spikes were observed. The dorsal surface of the A. imbricata leaves had a denser distribution of hydrophobic nano-structures compared to the ventral surface. The dorsal surface of the leaf showed high hydrophobicity, while the ventral surface showed wettability. Due to the habitat characteristics of A. imbricata, which is a floating plant, the ventral surface is constantly in contact with water, while the front surface has a hydrophobic surface. Analysis of the wax composition of plants revealed that M. verticillatum and A. imbricata were mainly composed of saturated fatty acids, ketones (2-Nonadecanone and 2-Heptadecanon), and sugar alcohols such as 1,30-Triacontanediol. These substances have high antimicrobial activity, and saturated fatty acids form stable and rough anisotropic crystalline surfaces. The hierarchical amphiphilic structure and the non-toxic stable hydrophobic surface observed in the cuticle of aquatic plants are expected to be utilized as materials for the development of sustainable antifouling technologies.

본 연구는 SCGPA(Spent Coffee Grounds Pellet Ash)를 활용하여 다양한 혼합비율로 시멘트 복합체를 제작함으로써 SCGPA 의 신규 건설 재료로서의 적용 가능성을 확인하는 것을 목적으로 한다. 강도 시험 결과, 28일 압축강도 36.31 MPa 및 휨강도 12 MPa 를 나타낸 혼합비가 최적 혼합비로 도출되었으며, SCGPA의 시멘트 치환율이 증가함에 따라 복합체의 전반적인 강도 특성이 감소하는 경향성을 발견하였다. SEM 및 XRD 분석 결과, SCGPA는 최대 10%의 적절한 치환율을 적용할 경우 큰 강도의 저하를 일으키지 않고 시멘트 대체재로 기능할 수 있음이 확인되었다. 본 연구 결과를 바탕으로, 고품질의 굵은 골재를 함께 사용하여 콘크리트를 생산할 경 우, 30 MPa 이상의 압축강도를 가진 구조용 콘크리트도 제조할 수 있을 것으로 기대된다.

This study investigated the tracking loss rate and shear bond strength under various conditions to evaluate the properties of a trackless tack coat used in asphalt pavement maintenance and conducted a field investigation in which the trackless tack coat was used. Typically, the loss rate and bond strength of a tack coat depend on various conditions. Therefore, to evaluate the loss rate of the tack coat, a wheel-tracking attachment loss rate and tack lifter test were conducted by simulating high-temperature exposure conditions, and the shear bond strength was measured according to the surface condition of the bottom layer. In addition, field investigations of cracks, rutting, and potholes were conducted at 11 sites five years after the application of the trackless tack coat. The results of the wheel-tracking loss rate evaluation showed that the loss rate differed depending on the conditions of the bottom layer, and the loss rate of the trackless tack coat was very low at the same temperature as that of the rapid strength concrete (RSC). In addition, in the results of tack lifter test at 65℃, which had the highest loss rate by wheel tracking loss rate test, it was found that loss rate of trackless tack coat was 0%–29% lower than that of RSC for the same exposure time. As a result of evaluating the effect of the bottom layer's condition on the shear bond strength, it was found that the trackless tack coat was about 20% higher than RSC under the same conditions. In addition, when foreign substances such as dust were present in the bottom layer, the shear bond strength was reduced by approximately 28%. Field investigations of the trackless-applied section showed that potholes and rutting did not occur, and alligator cracks and linear cracks occurred in some sections; however, it was judged that there was little direct relationship with the trackless tack coat. The trackless tack coat was found to have a slight loss owing to tracking, even at relatively high temperatures, and the shear bond strength was excellent. In addition, if the construction process is properly conducted, an advantage will be attained in securing the performance life of asphalt pavements.

To develop a heat-generating asphalt pavement utilizing a phase-change material (PCM), this study evaluated the application method of a PCM as an asphalt material and the thermal and physical properties of asphalt mixtures. The selection of PCM materials according to the phase-change temperature range suitable for thermal asphalt pavements and the encapsulation method for application to asphalt materials were examined, and encapsulated PCMs (ePCMs) using various materials were produced. The thermal and physical properties were evaluated through chamber experiments and strength tests by applying the ePCMs to asphalt mixtures. The characterization results of the ePCMs showed that ePCM-C had the highest latent heat, thermal stability, and physical stability in the asphalt binder and mixture. The chamber test results showed that ePCM-C, which had high latent heat, had the longest temperature delay time under all conditions. The mixing ratio was calculated by volume to substitute low-density ePCM into the mixture; as the ePCM content increased, the asphalt content also increased. The results of the Marshall stability and indirect tensile strength tests indicated that as the ePCM content increased, the strength and crack resistance properties decreased. Asphalt mixtures containing ePCMs have demonstrated the ability to maintain temperature for a long time within a specific temperature range. If an ePCM is improved such that it is not damaged under the production conditions of asphalt mixtures, it is expected to be sufficiently utilized as a technology for preventing road freezing.

In this study, the strength properties of recycled plastic materials using polypropylene, polyethylene, and high-density polyethylene were evaluated by measuring their compressive and flexural strengths, which are typically measured in cement-concrete pavements, to assess the feasibility of using recycled plastic materials as construction materials for modular pavements that can easily integrate advanced sensors, such as those for future autonomous driving. Two types of recycled plastic (composite resin and high-density polyethylene (HDPE)) and two types of inorganic materials (fly ash and limestone filler) were selected to evaluate the strengths of recycled plastic materials. Specimens for the compressive and flexural strength tests were prepared with four different recycled plastic contents (100%, 80%, 60%, and 40%). The compressive and flexural strengths of the recycled plastic specimens were measured according to the KSL ISO 679 and KSL 5105 methods, and the strength properties were analyzed based on the type and content of the recycled plastic and type of inorganic material used. Distortion and shrinkage problems were observed during specimen preparation using the 100% recycled plastic material. This indicated that inorganic materials must be incorporated to improve the flexural strength and facilitate specimen preparation. The compressive strength of plastic materials was comparable to the 28-day compressive strength of conventional cement-concrete pavements. The compressive strength of the composite resin was approximately twice that of HDPE. The flexural strengths of both the composite and HDPE were in the range of 15–25 MPa, suggesting their suitability as materials for the construction of modular pavement structures. Based on the limited strength test results, we can conclude that the strength properties of recycled plastic materials are similar to those of conventional cement-concrete paving materials. From the strength perspective, we confirmed that recycled plastic materials can be utilized as construction materials for modular pavements. However, further research should be conducted on factors such as molding methods for modular pavement structures based on different types of recycled plastic materials.

Activated carbon is generally recognized as an applicable material for gas or liquid adsorption and electrochemical devices, such as electric double-layer capacitors (EDLCs). Owing to the continuous increase in its price, research aimed at discovering alternative materials and improving its fabrication yield is important. Herein, organic pigments were ingeniously employed to enhance the fabrication of high-surface-area activated carbon with remarkable efficiency. Moreover, the focus was centered on the assessment of activated carbon derived from 2,9-dimethylquinacridone, also known as CI Pigment Red 122 for its capacity to adsorb tetracycline (TC) and its applicability as an electrode material for EDLCs. Activating these organic pigments with varying potassium hydroxide ratios allowed the fabrication of activated carbon with a higher yield than that for conventional activated carbon. Furthermore, it was confirmed that activated carbon with a very high specific surface area can be efficiently fabricated, demonstrating a remarkable potential in various application fields. Notably, this activated carbon exhibited an impressive maximum specific surface area and a total pore volume of 3,935 m2/ g and 2.324 cm3/ g, respectively, showcasing its substantial surface area and distinctive porous characteristics. Additionally, the Langmuir and Freundlich isotherm models were employed to examine the TC adsorption on the activated carbon, with the Langmuir model demonstrating superior suitability than the Freundlich model. Furthermore, the electrochemical performance of an activated carbon-based electrode for EDLCs was rigorously evaluated through cyclic voltammetry. The specific capacitance exhibited a considerable increase in proportion to the expanding specific surface area of the activated carbon.

Diamond/SiC composites were prepared by vacuum silica vapor-phase infiltration of in situ silicon–carbon reaction, and the thermophysical properties of the composites were modulated by controlling diamond graphitizing. The effects of diamond surface state and vacuum silicon infiltration temperature on diamond graphitization were investigated, and the micromorphology, phase composition, and properties of the composites were observed and characterized. The results show that diamond pretreatment can reduce the probability of graphitizing; when the penetration temperature is greater than 1600 °C, the diamond undergoes a graphitizing phase transition and the micro-morphology presents a lamellar shape. The thermal conductivity, density, and flexural strength of the composites increased and then decreased with the increase of penetration temperature in the experimentally designed range of penetration temperature. The variation of thermal expansion coefficients of composites prepared with different penetration temperatures ranged from 0.8 to 3.0 ppm/K when the temperature was between 50 and 400 °C.

Complex structure constituting of several layers of heteroatom-doped N-CDs are used as a main sensing film along with aluminum electrodes in conductometric gas sensing system for sensitive and selective monitoring of CO2 and CO gases diluted with normal air, which are extensively prevalent in the atmosphere primarily due to the industrial revolution, locomotives, and numerous natural phenomena’s and the limit of detection (LOD) turned out to be 400 ppm and 30 ppm, respectively, with 20% relative humidity at 30 °C and pressure 1 (atm) which are good for healthy air quality checks. The sensor performance was satisfactory and bidirectional at ambient room temperature (30 °C) and pressure (1 atm) conditions but the relative humidity (50%) at 30 °C had a detrimental impact on the sensing responses, therefore intermittent heating at 80 °C for several minutes between the sensing responses was provided to the sensing chip or one should use gas filter membranes to block humidity, thereby maintaining its constant performance with great ease and accuracy. The cyclic voltammetry revealed well-defined oxidation and reduction peaks, with excellent stability and reversibility. In a nutshell, heteroatom-doped N-CDs’ nanocomposite material can revolutionize in a better environmental pollution monitoring by sensing gases in an extensively lesser response and recovery times.

In this study, carbon coating was carried out by physical vapor deposition (PVD) on SiOx surfaces to investigate the effect of the deposited carbon layer on the performance of lithium-ion batteries as a function of the asphaltene content of petroleum residues. The petroleum residue was separated into asphaltene-free petroleum residue (ASF) and asphaltene-based petroleum residue (AS) containing 12.54% asphaltene by a solvent extraction method, and the components were analyzed. The deposited carbon coating layer became thinner, with the thickness decreasing from 15.4 to 8.1 nm, as the asphaltene content of the petroleum residue increased, and a highly crystalline layer was obtained. In particular, the SiOx electrode carbon-coated with AS exhibited excellent cycling performance with an initial efficiency of 85.5% and a capacity retention rate of 94.1% after 100 cycles at a current density of 1.0 C. This is because the carbon layer with enhanced crystallinity had sufficient thickness to alleviate the volume expansion of SiOx, resulting in stable SEI layer formation and enhanced structural stability. In addition, the SiOx electrode exhibited the lowest resistance with a low impedance of 23.35 Ω, attributed to the crystalline carbon layer that enhanced electrical conductivity and the mobility of Li ions. This study demonstrated that increasing the asphaltene content of petroleum residues is the simplest strategy for preparing SiOx@C anode materials with thin, crystalline carbon layers and excellent electrochemical performance with high efficiency and high rate performance.