E. Lu^*, M. Q. Wu, L. L. Dai, X. Y. Xu

Chalcogenide Letters, Vol.20, No.7, pp. 469-476, 2023, DOI:10.15251/CL.2023.207.469

Abstract This study used a simple one-step hydrothermal method to synthesize the MoS₂/GR composites with a new morphology composed of graphene nanotubes and ultra-thin molybdenum disulfide with the help of sodium chloride. The composites were characterized by XRD, XPS, SEM, TEM, and a series of characterization methods. Meanwhile, the tribological properties of the composites were studied. The results show that the addition of 1% MoS₂/GR composite nanotubes has excellent tribological properties. In addition, the structure and excellent tribological properties of MoS₂-C- nanocomposite lubrication materials will be conducive to designing new nanomaterials with 2D/3D structures, enhancing the anti-friction and More >

R. Singh^a,*, S. Kimothi^b, M. V. Singh^c, U. Rani^d, A. S. Verma^d,e,*

Chalcogenide Letters, Vol.20, No.8, pp. 573-578, 2023, DOI:10.15251/CL.2023.208.573

Abstract In this research paper, we have prepared thin film of MoS₂ by thermal evaporation technique and characterized it. This thin film depositions lead to amorphous thin film. To make it crystalline, thermal annealing of the film have deposited on the substrates at 800 ℃ for two hour under vacuum environment. X-ray diffraction data of thin film shows the poly-crystalline nature. The Atomic Force Microscopy (AFM) image of the thin film shows the crystallinity with regularly arranged grains. Furthermore, an unconventional MoS₂ based FET device has been fabricated by depositing thin film of MoS₂ on p-type silicon. Thereafter, More >

L. Yang^*, X. Q. Yuan, R. Y. Liu, R. X. Song, Q. W. Wang, W. Liang

Chalcogenide Letters, Vol.20, No.9, pp. 639-648, 2023, DOI:10.15251/CL.2023.209.639

Abstract In this paper, we report a facile method for the synthesis of MoS₂ nanosheet/ MoS₂ nanowire homostructures by growing MoS₂ nanosheets on the surface of MoS₂ nanowires. Benefiting from the uniform coating of MoS2 nanosheets on the surface of MoS2 nanowires, the MoS₂ nanosheet/ MoS₂ nanowire homostructures highly expose their electrocatalytic active edge sites and exhibit an enhanced electrocatalytic performance. It demonstrates a low overpotential of 107 mV at 10 mA/cm² and a small Tafel slope of 64 mV/dec in 0.5 M H₂SO₄. This work provides an inspiration for the design of efficient electrocatalysts with no stacking and aggregation More >

R. Jothiramalingam^*, H. Al-Lohedan, D. M. Al-Dhayan, A. Karami

Chalcogenide Letters, Vol.20, No.12, pp. 891-901, 2023, DOI:10.15251/CL.2023.2012.891

Abstract Layered structure transition metal chalcogenide compound’s such as Molybdenum sulfide (MoS₂) deposition in micro/meso porous architecture of MnO₂ could provide hybrid inter esting features. Multivalent MnO₂ is an attractive low cost and toxic free catalytic materi al for oxidation reaction and electrochemical applications. Non-ionic surfactant implica tion in mesoporous metal ion modified MnO₂ by deposition of metal chalcogenide is an ef fective composite for dye degradation applications. The low-cost pre-cursor makes it at tractive for large-scale production at industrial scale. Hence, in the present study deals with exploit the mechanism of metal chalcogenide and graphene oxide insertion More >

Majid Ahmed Mohammed¹, Abdullah Talab Derea², Mohammed Yaseen Lafta³, Obed Majeed Ali¹, Omar Rafae Alomar^4,*

Frontiers in Heat and Mass Transfer, Vol.21, pp. 215-226, 2023, DOI:10.32604/fhmt.2023.041668 - 30 November 2023

Abstract It is common knowledge that phase-change materials are used for the purpose of thermal storage because of the characteristics that are exclusive to these materials and not found in others. These characteristics include a large capacity for absorbing heat and a large capacity for releasing heat when the phase changes; however, these materials have a low thermal conductivity. This paper presents the results of an experimental study that investigated the impact that nanoparticles of copper oxide had on reducing the temperature of solar panels. The phase change substance that was used was determined to be More >

Aaqib Inam¹, Zhu Li^1,*, Salah-ud-din Khokhar², Zubia Zafar³, Muhammad Imran⁴

CMC-Computers, Materials & Continua, Vol.77, No.1, pp. 699-715, 2023, DOI:10.32604/cmc.2023.039707 - 31 October 2023

Abstract Mosquitoes are of great concern for occasionally carrying noxious diseases (dengue, malaria, zika, and yellow fever). To control mosquitoes, it is very crucial to effectively monitor their behavioral trends and presence. Traditional mosquito repellent works by heating small pads soaked in repellant, which then diffuses a protected area around you, a great alternative to spraying yourself with insecticide. But they have limitations, including the range, turning them on manually, and then waiting for the protection to kick in when the mosquitoes may find you. This research aims to design a fuzzy-based controller to solve the… More >

Yongxin Liu¹, Huaiwei Cao², Puyu Zhao², Gang Yang¹, Hua Yu¹, Fuwei He³, Bo He^2,*

Energy Engineering, Vol.120, No.10, pp. 2417-2431, 2023, DOI:10.32604/ee.2023.029596 - 28 September 2023

Abstract When using high-voltage transmission lines for energy transmission in loess hilly regions, local extreme wind fields such as turbulence and high-speed cyclones occur from time to time, which can cause many kinds of mechanical and electrical failures, seriously affecting the reliable and stable energy transmission of the power grid. The existing research focuses on the wind field simulation of ideal micro-terrain and actual terrain with mostly single micro-terrain characteristics. Model boundary constraints and the influence of constrained boundaries are the main problems that need to be solved to accurately model and simulate complex flow fields.… More >

Muhammad Younis¹, Nudrat Aisha Akram^1,*, Arafat Abdel Hamed Abdel Latef^2,*, Muhammad Ashraf³

Phyton-International Journal of Experimental Botany, Vol.92, No.10, pp. 2761-2784, 2023, DOI:10.32604/phyton.2023.028801 - 15 September 2023

Abstract To counteract the effects of drought stress, scientists have adopted several approaches including the use of different chemicals both inorganic and organic, which is contemplated as a highly efficient and cost-effective shot-gun approach. Ascorbic acid (AsA) is a potential organic substance, which widely occurs in plants, and is considered to be an effective antioxidant to counteract reactive oxygen species (ROS). Thus, a pot experiment was performed to assess the relative mitigating impacts of synthetic AsA and naturally occurring AsA in the form of lemon juice (LJ) and orange juice (OJ) on two cultivars of okra (Abelmoschus… More >

Nerejda Shehu^1,*, Christian Meierhofer¹, Anja Hennemuth^2,3, Markus Hüllebrand^2,3, Pavlo Yevtushenko³, Peter Ewert¹, Stefan Martinoff⁴, Heiko Stern¹

Congenital Heart Disease, Vol.18, No.4, pp. 461-474, 2023, DOI:10.32604/chd.2023.031075 - 15 September 2023

Abstract Background: Pressure measurement in total cavopulmonary connection (TCPC) patients is a domain of cardiac catheterization. 4D velocity encoded cardiovascular magnetic resonance (4D–flow MRI) offers an alternative for assessment of even minor pressure differences. The scope of this study was to measure even minor pressure differences in the anastomosis of TCPC patients, who are clinically uncompromised. Methods: Twenty-four patients (median 15 years [8;34]) with TCPC were studied prospectively by 4D-flow MRI. Pressure differences between superior vena cava (SVC) and extracardiac conduit (C) to both right pulmonary artery (RPA) and left pulmonary artery (LPA) were assessed. Small… More > Graphic Abstract

TONG WANG^1,4,#, JINHUAN HONG^1,5,#, JIAJIE XIE^1,5, QIAN LIU⁴, JINRUI YUE^1,5, XUTING HE^1,5, SHIYU GE⁴, TAO LI⁴, GUOXIN LIU⁴, BENZHI CAI^1,3,5, LINQIANG LI^2,*, YE YUAN^1,3,5,*

BIOCELL, Vol.47, No.8, pp. 1811-1820, 2023, DOI:10.32604/biocell.2023.029120 - 28 August 2023

Abstract Background: Phototherapies based on sunlight, infrared, ultraviolet, visible, and laser-based treatments present advantages like high curative effects, small invasion, and negligible adverse reactions in cancer treatment. We aimed to explore the potential therapeutic effects of blue light emitting diode (LED) in human hepatoma cells and decipher the underlying cellular and molecular mechanisms. Methods: Wound healing and transwell assays were employed to probe the inhibition of the invasion and migration of hepatocellular carcinoma cells in the presence of blue LED. The sphere-forming test was used to evaluate the effect of LED blue light irradiation on cancer… More > Graphic Abstract