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  • 2025


    • Book : ()
    • Pub. Date : 2025
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  • 2025


    • Book : ()
    • Pub. Date : 2025
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  • 2025

    A full stress–strain (SS) curve is an important material property for characterizing mechanical behavior. It can be obtained directly from conventional uniaxial tensile tests. It can also be predicted from the load-displacement curve obtained from an instrumented indentation test (IIT). To predict the SS curves, the IIT can use iterative finite element analysis (FEA) of the indentation process using a constitutive model, such as a power-law constitutive model. To overcome the issue of idealizing the SS curves with the power-law constitutive model, the concept of SS curve estimation using a master SS curve for specific materials was proposed in our previous study. In this study, a master curve was derived using various SS curves for SS316. A case study was conducted, and then the robustness and effectiveness of the SS curve prediction method using a master curve was evaluated.Consequently, the error using the master curve of SS316 was found to be negligible to the IIT behavior but significantly improved the accuracy of SS curve prediction compared to the power-law constitutive model
    • Book : 57(5)
    • Pub. Date : 2025
    • Page : pp.325-337
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  • 2025

    The integration of a Super High Frequency (SHF) on-body antenna with Frequency Selective Surfaces (FSS) marks a significant advancement in defense beacon technology. This study presents a unique, wearable, apple-shaped SHF antenna incorporating a multifunctional FSS for use as a Defense Locator Beacon (DLB). Key features include high gain, highly directional radiation pattern, low Specific Absorption Rate (SAR), reduced Radar Cross Section (RCS), and compact dimensions. The antenna, made on denim fabric, operates across the entire SHF band. With a 9-cell FSS array on a semi-flexible RT Duroid substrate, the structure is both simulated and fabricated, showing enhanced performance: peak gain increased from 7.14 to 11.1 dBi, FBR from 3.58 dB to 19.87 dB, and RCS reduced from -25 to -50 dB. Link Budget Analysis confirms effective communication, with ranges of 67 m and 64 m for 100 Mbps and 200 Mbps. The proposed antenna ensures high-speed communication and accurate location identification for military personnel.
    • Book : 75(1)
    • Pub. Date : 2025
    • Page : pp.90-99
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  • 2025

    본 연구는 루스 워닥(Ruth Wodak)의 담화전략 이론을 기초로, 중국의 『인민일보』와 일본의 『아사히신문』에 실린 핵오염수 관련 기사를 분석 대상으로 하여, 양측 신문이 어떻게 네 가지 담화 전략을 운용하여 각각의 국가 이데올로기를 구현하는지에 대한 깊이 있는 탐구를 진행하였다.분석 결과는 다음과 같이 요약할 수 있다. 첫째, 명명전략에 있어서 『인민일보』는 『핵오염수』라는 용어를 사용하여 그 유해성을 강조하는 반면, 『아사히신문』은 『처리수라는 표현을 써서 그 무해성을 시사하는 경향을 보였다. 둘째, 서술전략에서 『인민일보』는 주로 소극적인 특징을 가진 동사들을 키워드와 유의미하게 결합시켰다면, 『아사히신문』은 소극적인 단어뿐만 아니라 적극적인 특징을 가진 형용사들도 키워드와 유의미하게 연계시켰다. 셋째, 논증 전략 측면에서 『인민일보』는 토포이(topoi)를 활용하여 해양 방류가 가져올 위험성, 일본 정부의 인권 침해, 무책임함 등을 논증한 반면, 『아사히신문』에서는 토포이를 이용한 논증이 거의 찾아볼 수 없었다. 넷째, 관점화 전략에서 『인민일보』는 주로 간접 인용을 통해 제3자의 반대 의견이나 국제법을 자주 인용하여 자신의 입장을 지지하는 반면, 『아사히신문』은 직접 인용을 통해 해양 방류에 대한 찬반 양측의 의견을 균형있게 제시하는 경향을 보였다. 이러한 담화 전략의 차이는 ALPS(다핵종제거설비)의 처리 결과, IAEA(국제원자력기구)의 심사 과정, 그리고 각 신문의 성격과 같은 사회적, 역사적 요인과 밀접한 관련이 있는 것으로 분석된다.
    • Pub. Date : 2025
    • Page : pp.59-88
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  • 2025

    Intraocular metastases represent the most common type of intraocular tumors in adults. In most cases, the metastases originate from primary breast and lung cancers. Effective management of patients with intraocular metastatic disease requires a multidisciplinary approach involving ophthalmologists, oncologists, and radiation therapists. The primary goals of treatment are disease control, maintenance of optimal quality of life, and preservation of functional vision. This article provides an in-depth overview of intraocular metastases, with special emphasis on the practical aspects of their diagnosis and treatment based on the most recent literature.
    • Book : 17(6)
    • Pub. Date : 2025
    • Page : pp.1041-1041
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  • 2025

    The purpose of this study article is to provide a detailed examination of the performance of exergy electric panels, exergy efficiency panels and exergy solar panels under the climatic circumstances of the Utrecht region in the Netherlands. The study explores the performance of these solar panels in terms of both their energy efficiency and their exergy efficiency. Additionally, the study investigates critical factors such as solar radiation, module internal temperature, air temperature, maximum power, and solar energy efficiency. Environmental factors have a considerable impact on panel performance; temperature has a negative impact on efficiency, whereas an increase in solar radiation leads to an increase in energy and exergy output. These findings offer significant insights that can be used to increase the utilization of solar energy in locations that have a temperate oceanic climate, particularly in the context of the climatic conditions of the Utrecht region. The usefulness of the linear regression model in machine learning was validated by performance measures such as R2, RMSE, MAE, and MAPE. Furthermore, an R2 value of 0.94889 was found for the parameters that were utilized. Policy makers, researchers, and industry stakeholders who seek to successfully utilize solar energy in the face of changing climatic conditions may find this research to be an important reference.
    • Book : 18(6)
    • Pub. Date : 2025
    • Page : pp.1318-1318
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  • 2025

    Abstract We investigate loosely bound composite states made of dark matter, where the binding energy for constituent particles is considerably less than the constituent mass. We focus on models of nuclear and molecular dark matter, where constituents are separated by length scales larger than the inverse constituent mass, just like nuclei and atoms in the Standard Model. The cosmology, structure, and interactions at underground experiments are described. We find that loosely bound composites can have a very large cross section for scattering with nuclei that scales with nucleon number like ∼ A 4. For some couplings, these composites produce extremely soft (≪ keV) individual atomic recoils while depositing a large amount of total recoil energy (≫ keV) in a single passage through a detector, implying an interesting new class of signatures for low threshold direct detection.
    • Book : 2025(03)
    • Pub. Date : 2025
    • Page : pp.013-013
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  • 2025

    Fusion reactors produce high-energy neutrons through the Deuterium-Tritium (DT) reaction. The long-term performance verification and structural integrity assessment of the breeding blanket under continuous plasma operation are essential for the development of Demonstration fusion power reactor (DEMO) breeding blankets.The Korea Institute of Fusion Energy (KFE) has been planning the construction of a test facility called the Integrated Breeding Test Facility (IBTF) that uses a linear accelerator as the neutron source. A solid beryllium target has been considered to generate fusion-like neutrons. A conceptual design of the Tritium Breeding Unit (TBU), which is a key component of the breeding blanket, has been carried out. This study evaluated tritium production under fusion-like conditions using factors such as the position and thickness of the graphite block, the thickness of the first wall, and the radial length of the breeding zone. The results showed that increasing graphite block thickness and optimizing the dimensions of the TBU enhanced tritium production. However, these changes affected the structural integrity of the TBU. The side wall of the TBU experienced membrane plus bending stress, which exceeded the Level C and D acceptance criteria under the assumption of In-Box LOCA. Measures were investigated to ensure structural integrity while improving tritium production of the TBU.
    • Book : 57(4)
    • Pub. Date : 2025
    • Page : pp.3-30
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  • 2025

    The polyol method, microemulsions, thermal decomposition, electrochemical synthesis, chemical vapor deposition, microwave irradiation, pulsed laser method, sonochemical reduction, and gamma radiation are just a few of the many techniques used in the synthesis and characterization of silver nanoparticles (Ag NPs). These methods apply to several kinds of nanoparticles, including metal, ceramic, lipid-based, carbon-based, and polymeric nanoparticles. Their characterisation heavily relies on analytical techniques including Energy Dispersive Analysis of X- Rays (EDAX), UV Spectroscopy, and Scanning Electron Microscopy (SEM). The rapidly developing area of nanotechnology provides insight into the enormous benefits of nanoparticles that go beyond traditional thinking. Their integration cuts across several industries, including consumer products, food, healthcare, and medicine. The development and Synthesis of nanopesticides and nanofertilizers from cowdung and neem tree parts was done by utilizing principles from nanotechnology. Synthesized nanoparticles were characterized using SEM & EDAX & Synthesis of nano particles was monitored using UV-Spectrophotometer. Also, Evaluation of the impact of synthesized nanoparticles on the germination process of tomato seeds was carried out & positive results were obtained. Hence using this as a model it was concluded that nanoparticles do have their potential applications in agriculture and beyond.
    • Book : 619()
    • Pub. Date : 2025
    • Page : pp.04002-04002
    • Keyword :