Subjects -> EARTH SCIENCES (Total: 771 journals)
    - EARTH SCIENCES (527 journals)
    - GEOLOGY (94 journals)
    - GEOPHYSICS (33 journals)
    - HYDROLOGY (29 journals)
    - OCEANOGRAPHY (88 journals)

EARTH SCIENCES (527 journals)            First | 1 2 3     

Showing 401 - 371 of 371 Journals sorted alphabetically
Radiocarbon     Hybrid Journal   (Followers: 13)
Remote Sensing     Open Access   (Followers: 60)
Remote Sensing Applications : Society and Environment     Full-text available via subscription   (Followers: 11)
Remote Sensing in Earth Systems Sciences     Hybrid Journal   (Followers: 5)
Remote Sensing Letters     Hybrid Journal   (Followers: 48)
Remote Sensing Science     Open Access   (Followers: 30)
Rendiconti Lincei     Hybrid Journal  
Reports on Geodesy and Geoinformatics     Open Access   (Followers: 6)
Reports on Mathematical Physics     Full-text available via subscription   (Followers: 2)
Reports on Progress in Physics     Full-text available via subscription   (Followers: 3)
Research & Reviews : Journal of Space Science & Technology     Full-text available via subscription   (Followers: 17)
Resource Geology     Hybrid Journal   (Followers: 6)
Resources, Environment and Sustainability     Open Access   (Followers: 4)
Reviews in Mineralogy and Geochemistry     Hybrid Journal   (Followers: 4)
Reviews of Modern Physics     Full-text available via subscription   (Followers: 32)
Revista Cerrados     Open Access  
Revista de Ingenieria Sismica     Open Access  
Revista de Investigaciones en Energía, Medio Ambiente y Tecnología     Open Access  
Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales     Open Access  
Revista de Teledetección     Open Access  
Revista Geológica de Chile     Open Access  
Revue Française de Géotechnique     Hybrid Journal   (Followers: 1)
Rock Mechanics and Rock Engineering     Hybrid Journal   (Followers: 7)
Rocks & Minerals     Hybrid Journal   (Followers: 3)
Russian Geology and Geophysics     Hybrid Journal   (Followers: 2)
Russian Journal of Mathematical Physics     Full-text available via subscription  
Russian Journal of Pacific Geology     Hybrid Journal  
Russian Physics Journal     Hybrid Journal   (Followers: 1)
Science China Earth Sciences     Hybrid Journal   (Followers: 3)
Science News     Hybrid Journal   (Followers: 10)
Science of Remote Sensing     Open Access   (Followers: 8)
Scientific Annals of Stefan cel Mare University of Suceava. Geography Series     Open Access  
Scientific Reports     Open Access   (Followers: 83)
Sedimentary Geology     Hybrid Journal   (Followers: 19)
Sedimentology     Hybrid Journal   (Followers: 14)
Seismic Instruments     Hybrid Journal   (Followers: 1)
Seismological Research Letters     Full-text available via subscription   (Followers: 12)
Soil Dynamics and Earthquake Engineering     Hybrid Journal   (Followers: 14)
Soil Security     Open Access   (Followers: 6)
Solid Earth     Open Access   (Followers: 5)
Solid Earth Discussions     Open Access   (Followers: 1)
Solid Earth Sciences     Open Access   (Followers: 1)
South African Journal of Geomatics     Open Access   (Followers: 2)
Standort - Zeitschrift für angewandte Geographie     Hybrid Journal   (Followers: 3)
Stratigraphy and Geological Correlation     Full-text available via subscription   (Followers: 2)
Studia Geophysica et Geodaetica     Hybrid Journal   (Followers: 1)
Survey Review     Hybrid Journal   (Followers: 6)
Surveys in Geophysics     Hybrid Journal   (Followers: 3)
Swiss Journal of Palaeontology     Hybrid Journal   (Followers: 4)
Tectonics     Full-text available via subscription   (Followers: 15)
Tectonophysics     Hybrid Journal   (Followers: 24)
Tellus A     Open Access   (Followers: 20)
Tellus B     Open Access   (Followers: 20)
Terra Nova     Hybrid Journal   (Followers: 5)
The Compass : Earth Science Journal of Sigma Gamma Epsilon     Open Access  
The Holocene     Hybrid Journal   (Followers: 16)
The Leading Edge     Hybrid Journal   (Followers: 1)
Transportation Infrastructure Geotechnology     Hybrid Journal   (Followers: 8)
UD y la Geomática     Open Access  
Unconventional Resources     Open Access  
Underwater Technology: The International Journal of the Society for Underwater     Full-text available via subscription   (Followers: 1)
Unoesc & Ciência - ACET     Open Access  
Vadose Zone Journal     Open Access   (Followers: 5)
Volcanica     Open Access  
Water     Open Access   (Followers: 11)
Water International     Hybrid Journal   (Followers: 19)
Water Resources     Hybrid Journal   (Followers: 21)
Water Resources Research     Full-text available via subscription   (Followers: 101)
Watershed Ecology and the Environment     Open Access  
Weather, Climate, and Society     Hybrid Journal   (Followers: 14)
Wiley Interdisciplinary Reviews - Climate Change     Hybrid Journal   (Followers: 34)
World Environment     Open Access   (Followers: 1)
Yearbook of the Association of Pacific Coast Geographers     Full-text available via subscription   (Followers: 2)
Yugra State University Bulletin     Open Access   (Followers: 1)
Zeitschrift der Deutschen Gesellschaft für Geowissenschaften     Full-text available via subscription   (Followers: 3)
Zeitschrift für Geomorphologie     Full-text available via subscription   (Followers: 5)
Zitteliana     Open Access   (Followers: 3)
Землеустрій, кадастр і моніторинг земель     Open Access   (Followers: 1)

  First | 1 2 3     

Similar Journals
Journal Cover
Physics of the Solid State
Journal Prestige (SJR): 0.415
Citation Impact (citeScore): 1
Number of Followers: 4  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 1090-6460 - ISSN (Online) 1063-7834
Published by Springer-Verlag Homepage  [2468 journals]
  • Fabrication and Optical Characteristics of Thin Films Comprising VO2 and
           SnO2

    • Free pre-print version: Loading...

      Abstract: As the demand for sustainable energy solutions rises, the development of energy-efficient technologies becomes imperative. Smart windows, incorporating thermochromic materials, emerge as promising contributors to reducing building energy consumption. Vanadium dioxide (VO2), known for its thermochromic properties, faces challenges in commercial application due to its limited visible light transmittance. This study addresses these challenges by utilizing quartz as a substrate and depositing VO2 thin films using radio frequency sputtering. To enhance optical performance, a bilayer structure was created by integrating this single-layer film with SnO2. Room-temperature X-ray diffraction confirmed the single-phase growth of VO2 on quartz, and XRD validated the proper fabrication of films. Ultraviolet-visible spectroscopy at room temperature substantiated the improved transmittance of the SnO2/VO2 bilayer, marking a significant advancement toward more efficient and commercially viable smart windows. This research highlights the potential of SnO2-based thin films in mitigating the visible light transmittance limitations of VO2, thus opening avenues for advanced smart window applications with enhanced energy-saving capabilities. Additionally, Atomic Force Microscopy (AFM) was employed to compare the roughness of the films, and the impact of reduced roughness on optical transmittance was evaluated. The results contribute to the optimization of smart window technologies for broader sustainable energy applications.
      PubDate: 2024-04-01
       
  • Mobility Characteristics of ZnMgO/ZnO Heterostructures with Screening
           Effects

    • Free pre-print version: Loading...

      Abstract: The electron mobility characteristics of a ZnMgO/ZnO heterostructure are systematically investigated by an ensemble Monte Carlo method. Screening effects are included in all electron scattering mechanisms. The mobilities are calculated for a temperature range of 4 to 300 K and Mg contents ranging from 8.5 to 44%. In this range, dislocation scattering (DS) and interface roughness scattering (IFR) are highly effective for low and high values of Mg compositions, respectively. Screening effects must be considered in scattering mechanisms to achieve a reasonable agreement with existing experimental results. Our findings could be significant for the design and optimization of ZnO-based devices.
      PubDate: 2024-04-01
       
  • Exploring the Spin Torque Diode Effect in Low Dimensional Magnetic
           Multilayer Structure

    • Free pre-print version: Loading...

      Abstract: This study investigates the impact of spin torque diode (STD) effect in a composite spin valve pillar, comprising distinct magnetic and non-magnetic layers arranged as AF/F0/NM1/F1/NM2/F2. Our investigation delves into the foundational mechanisms governing the STD effect within this magnetic multilayer system. Through the utilization of the composite spin valve pillar as a dynamic platform, we unravel the intricate interplay between spin-dependent charge transport and magnetic fields. Our inquiry is to understand diverse structural parameters, allowing us to unveil its operational capabilities and optimize its functionality across varied operating conditions. Furthermore, our exploration encompasses the quantification of detection sensitivity, scrutinizing the relationship between output voltage and applied input power. In our study, we have done an analysis of crucial parameters such as current, resistance, and sensitivity in the STD system. Our findings showcase the manifestation of the spin diode effect in low-dimensional magnetic structure. This finding indicates the feasibility of fabricating a spin diode device with diverse potential applications.
      PubDate: 2024-04-01
       
  • Temperature Sensor Based on Deformed One-Dimensional Nanometallic Photonic
           Crystals

    • Free pre-print version: Loading...

      Abstract: The theoretical investigation of the temperature dependence in hybrid one-dimensional photonic crystals with a metal defect involved simultaneously considering thermal expansion effect and thermal-optical effect. Firstly, we study the effect of the number of iterations in the H(LH)NH(LH)N and H(LH)NSH(LH)N systems, where H (GaAs) and L (Bi4Ge3O12 “BGO”) are two different materials with constant refractive index nH (nGaAs = 3.3) and nL (nBGO = 2.31), respectively. S is a metal chosen as the Ag. The presence of metal S enhances noticeably the sensitivity for the temperature. It has been shown that when N increases the transmission peak λpeak shifts to higher wavelengths for the structure H(LH)NH(LH)N. We show that the proposed device H(LH)NSH(LH)N can be used as a temperature sensor. Indeed, the sensitivity changes from the value 4.5 pm K–1 in the absence of the metal layer to the value 17 pm K–1 in its presence. Enhancing the sensitivity of the H (LH)NSH(LH)N component, we proceeded to a deformation of the system by the application of a law of the type y = x1 + k, where y denotes the deformation coordinate of the structure H(LH)NSH(LH)N and x the coordinate before deformation. The degree of deformation is defined by the coefficient k. The value of N is chosen equal to 4. This value corresponds to the minimum of layers of the system leading to its satisfactory performance. We show in this case that the sensitivity increases by increasing the positive value of k.
      PubDate: 2024-04-01
       
  • Exploring Calcium–Zinc Ferrite Nanoparticles: Synthesis, Properties,
           and Applications

    • Free pre-print version: Loading...

      Abstract: This study focuses on the synthesis and characterization of calcium–zinc Ca1–xZnxFe2O4 (x = 0, 0.25, 0.50, 0.75, 1.0) (Ca–Zn) ferrite nanoparticles by the solution combustion synthesis (SCS), exploring their potential applications in various technological fields. The characterization involved a comprehensive analysis of their structural, magnetic, and morphological features using various techniques such as X-ray diffraction, transport properties, biological studies and magnetic measurements. Understanding the synthesis process and the resulting nanoparticle properties is crucial for harnessing their unique attributes in diverse fields like biomedical engineering, magnetic storage.
      PubDate: 2024-03-01
       
  • Transport and Localization in Quantum Dot Chains with Fluctuations: A
           Simple Probabilistic Model

    • Free pre-print version: Loading...

      Abstract: In this study, we obtain an expression to calculate the probability of electron transmission in a linear chain of N quantum dots with fluctuations of the potential levels on the Fermi seas of each point. Here, the transmission probability model is based on concepts of Probability Theory. From this expression, we determine the transmission in the chain under these fluctuations. Besides, Anderson localization and other transport properties were studied using numerical simulations. Results show the impact of fluctuations on transmission efficiency and aid in comprehensively understanding electron transport in quantum dot systems.
      PubDate: 2024-03-01
       
  • Effect on Structural, Morphological, and Magnetic Hysteresis of
           Ni2+–Zr4+ Co-Substituted Barium Hexaferrites by Hydrothermal Synthesis

    • Free pre-print version: Loading...

      Abstract: BaFe12–2xNixZrxO19 (x = 0–1) ferrites were successfully synthesized by hydrothermal method based on metal chloride. The synergistic effects of Ni2+–Zr4+ ions doping and heat treatment on microstructure and ions distribution to tailoring the magnetic properties were studied. Without calcination the traces of BaCO3 appears in all samples where the Fe2O3 phase appears at x > 0.6. It exhibits very good hexagonal crystals with doping content x < 0.8, but deviate from hexagonal flakes for x = 1. With low temperature 950°C calcination, the pure phase and the uniform distribution of particle size were obtained. XPS characterization show that the concentrations of non-lattice oxygen decrease, where Fe2+ contents slightly increase and then decrease with increasing Ni2+–Zr4+ ions. The comprehensive magnetic properties, especially the saturation magnetization, of doped ferrites prepared by hydrothermal method decrease sharply when x > 0.6. The anisotropy field also decreases to the lowest at x = 0.6. By comparing the magnetic properties under heat treatment conditions, the optimum annealing temperature is 1000°C, where the saturation magnetization (Ms) increases up to 59.54 emu/g at x = 0.8. Thus, the as-synthesized Ni2+–Zr4+ doping strontium barium hexaferrite will be useful for the applications in security switching, microwave absorption and recording media.
      PubDate: 2024-03-01
       
  • Study of Optical and Magnetic Properties of Solvothermally Synthesized
           Mn/Fe/N-Doped ZnO Nanocomposite for Advanced Dye Photodegradation

    • Free pre-print version: Loading...

      Abstract: In this research, a mesoporous Mn/Fe/N-doped ZnO nanocomposite was developed via solvothermal synthesis, focusing on its optical and magnetic potentials for dye degradation. FTIR spectroscopy identified unique functional groups, while EDX analysis confirmed its elemental composition. BET analysis showcased an expanded surface area due to mesoporosity, evidenced by a type IV isotherm. UV-Visible spectroscopy revealed a red shift and optical band gap reduction from 3.13 to 2.68 eV, indicating improved light absorption. SEM provided insights into distinctive morphologies, and PL studies showed reduced electron-hole recombination in highly doped samples. SQUID measurements verified the nanocomposite’s ferromagnetic characteristics. These properties collectively enhance its photocatalytic efficacy against Congo red and Methylene blue dyes, presenting a viable solution for environmental clean-up.
      PubDate: 2024-03-01
       
  • On the Problem of Generalization of the Landau–Lifshitz Equation

    • Free pre-print version: Loading...

      Abstract: Using the method of compiling an expression invariant with respect to the operations of inversion of time and coordinates for the energy of a magnetic structure under the influence of some external effective field which is considered an independent vector parameter of the problem, a system of differential equations generalized the Landau–Lifshitz and Hilbert results is obtained. When obtaining these equations, the explicit expression for the dissipative function are obtained taking into account the pseudovector the nature of the magnetic field strength. The analysis of the obtained equations for the case of strong magnetic fields is carried out and the possibility of the existence of practically continuous oscillations of the magnetization at a frequency \(\bar {\omega }\) = \(\xi {{\gamma }_{e}}{{M}_{0}}\) (where coefficient ξ is greater than unity) is predicted.
      PubDate: 2024-02-01
       
  • Thermal and Diffusion Processes during Electron Beam Processing of
           Surfaces of Electroexplosive Alloying

    • Free pre-print version: Loading...

      Abstract: The mechanisms of hardening surface layers of carbon steel 45 after combined treatment including electroexplosive boroaluminizing, aluminizing with silicon carbide, and electron beam processing (EBP) are revealed. The combined processing leads to an increase in the hardening depth. After the electroexplosive boroaluminizing and EBP, the microhardeness is 16 GPa and the hardening depth is 90 μm; after the electroexplosive aluminizing combined with silicon carbide and EBP, the microhardness is 12.5 GPa and the hardening depth is 50 μm. In the initial state, the microhardness is 2 GPa. In the conditions of dry sliding friction, the wear resistance increases by a factor of 43 after electroexplosive boroaluminizing and EBP, and by a factor of 12 after electroexplosive aluminizing with silicon carbide. The surface hardening is achieved as a result of the formation of fine-disperse nonequilibrium structure containing strengthening phases. The models developed in this work allow one to explain the results by the peculiarities of the thermal and diffusion processes during EBP.
      PubDate: 2024-02-01
       
  • First-principles Study on the Lattice Thermal Conductivity of Janus
           In2Ge2Te6 Bilayer

    • Free pre-print version: Loading...

      Abstract: Janus In2Ge2Te6 bilayer exhibit the potential for low thermal conductivity due to their complex geometry and large atomic mass contrast. The results demonstrate that the intersection of the low-frequency optical branch and the longitudinal acoustic phonon branch (LA) within the Janus In2Ge2Te6 bilayer structure, combined with a larger average atomic mass, leads to a smaller phonon group velocity, a higher phonon scattering rate, a lower phonon relaxation time, and a stronger anharmonicity. These factors contribute to the lower thermal conductivity of the Janus In2Ge2Te6 bilayer. The Janus In2Ge2Te6 bilayer structure exhibits a maximum and minimum lattice thermal conductivity of about 0.35 and 0.1 W/(m K) at 300 and 1000 K, respectively.
      PubDate: 2024-02-01
       
  • XRD Study of Structure Transformations in Zn–In–O Nanocomposite Thin
           Films Prepared by Spray Pyrolysis Method

    • Free pre-print version: Loading...

      Abstract: Structure and composition of spray pyrolized thin films in ZnO–In2O3 system with a relative atomic zinc content (Zn/In) in the range of 0.125–2 is investigated using X-ray diffraction analysis. These nanostructured films constitute of 1 to 5 In- and Zn-based oxide nanocrystalline phases including In2O3(ZnO)3 with superlattice structure and ZnO with rather unexpected rocksalt structure. The octahedral coordination of Zn atoms and practically the same Zn–O distances as in the case of In2O3 facilitate a growth of ZnO rock salt on the surface of In2O3 nanocrystals. The modified Williamson-Hall method is applied to determine the crystallite size and micro-strain in the predominant In2O3 phase. The monotonous crystallite fineness of this phase with increase of Zn content and monotonous increase of In–Zn-based oxide crystallites is established. A mutual doping of In2O3 and ZnO nanocrystallites, leading to the formation of n–n+ contacts at their boundaries, has been revealed. Model representations about the influence of the nanocomposite structure of films on their electrical properties are proposed.
      PubDate: 2024-02-01
       
  • Elaboration and Characterization of Transparent Electrodes of ZnO Doped Al
           for Application in Organic Photovoltaic Cells

    • Free pre-print version: Loading...

      Abstract: The elaboration and characterization of transparent electrodes of ZnO:Al type (aluminum-doped zinc oxide) are crucial steps in the development of organic photovoltaic cells (OPV) due to their essential role in collecting the current generated by the organic active layer. In this work, we have make realization and electrically characterized of transparent electrodes based on ZnO at various doping levels of Al. Subsequently, we created different metal-semiconductor polymer junctions (PV cells) and determined their I(V) characteristics in both darkness and under illumination.
      PubDate: 2024-01-01
       
  • Study of MgO (111) Charging Phenomena Using Scanning Electron Microscopy
           and Atomic Force Microscopy

    • Free pre-print version: Loading...

      Abstract: In this article we have studied, using the Scanning Electron Microscopy SEM LEO 440, the surface electrical properties of MgO (111) irradiated with 30 keV electrons. The study of the evolution of the secondary electronic emission of MgO (111) shows that \(\ln \sigma \) increases and reaches a value lower than zero. After an injection of 5000 pC, we observe a pseudo mirror, which is due to a very negative surface potential. Finally, we have shown the very high stability of charges within MgO (111) thanks to the use of Atomic Force Microscopy coupled with Scanning Electron Microscope. We can then conclude that MgO (111) is a good trapping insulator.
      PubDate: 2024-01-01
       
  • Metal and Non-Metal Doped FeVO4 Based Composite Semiconductors for
           Degradation of Organic Toxicants: A Review

    • Free pre-print version: Loading...

      Abstract: In recent years, two of the most pressing problems in the world have become the rising need for energy and the degradation of the environment. Industrialization’s discharge of organic and metal ion waste into water systems has created a critical demand for efficient removal and degradation of organic waste. Due to their superior optical and electrical properties, semiconductors like metal oxides and mixed metal oxides have attracted a lot of attention for photocatalysis. The majority of these semiconductors, however, lack the ideal band alignment necessary for effective sun/solar light absorption. FeVO4 can be a useful tool for band tuning for visible light photocatalysis in order to get around this problem. Many attempts have been made over the years to increase FeVO4’s photocatalytic performance. It has been postulated and put into practice that a number of different modification strategies, including element doping and composite fabrication, can be utilized to increase the efficiency of photocatalysts based on FeVO4. The photocatalytic degradation of harmful organic pollutants by various metal- and non-metal-doped FeVO4-based materials is highlighted in this review paper. In recent years, significant progress has been made in understanding the core problems and creating effective photocatalysts.
      PubDate: 2024-01-01
       
  • Yttrium Doped α-Fe2O3 Nanorods for Enhanced Optoelectronic Properties and
           Increased Photocurrent Density

    • Free pre-print version: Loading...

      Abstract: Hematite (α-Fe2O3) has received a lot of attention and has potential use in a variety of applications such as energy storage and photovoltaic solar cells despite its short diffusion length and extremely low conductivity. A possible strategy to enhance its structural and optoelectronic properties is element doping. In this work, we report on the successful preparation of α-Fe2O3 nanorods thin film via a simple low-cost hydrothermal process, and the crucial effect of yttrium doping. We analyzed the effects of Y-doping of α-Fe2O3 by varying the amount of yttrium 1, 3, 5, and 8 at %. The optical study revealed that Y-doping reduces the optical band gap, with a shift from 2.11 eV for pure hematite NRs films to 1.94 eV for 5 at % Y-doped NRs. Our study proved that Y-doping obviously reduced the recombination activities in α-Fe2O3 as demonstrated by the photoluminescence study. Amongst all doped α-Fe2O3 NRs films with different Y dopant concentration, the 5 at % exhibited best structural and optoelectronic properties with the highest photocurrent density and incident photon to current efficiency (IPCE). The photocurrent density was increased from 0.25 (undoped) to 1.25 mA/cm2 in the doped NRs with 5 at % Y content at 0.4 V vs. (Ag/AgCl) under illumination, which is 5 times higher than that measured in the pristine α-Fe2O3. The high photo-response of Y-doped NRs in the visible range suggests that the grown NRs thin films are excellent candidates for optoelectronic applications, particularly in solar cells and large light-harvesting devices.
      PubDate: 2024-01-01
       
  • Computational Modeling of a Robot with Hydraulic Control by Velocity
           Vector Walking on a Solid Surface

    • Free pre-print version: Loading...

      Abstract: — The use of walking machines is topical for many engineering works in complex physical media and hydrological studies. To develop the controlling system of a walking machines, it is necessary to have a kinematic and dynamic models of such a machine. The aim of this work is to develop a kinematic model for an acting model of a six-legged walking solid-state robot that will allow us to obtain in computational experiments a visual representation of a machine motion in space when actuating a control algorithm. The mathematical description of the kinematic model is developed for a six-legged walking robot in the form of systems of equations that allow us to determine the position of the robot units at given rotation angles of limb links. The system of difference equations allowing modeling of the robot motion with velocity vector control is obtained. The model is used for imitation modeling of scenarios of various types of robot movements in the MATLAB software. The model takes into account the events leading to a change in the velocity mode. This computational model assumes that the robot limb angle is changed by a hydraulic actuator. The equations that determine the relation of the hydraulic rod extension and the limb angles are derived taking into account the peculiarities of the control algorithm. To estimate the possibilities of robot movement, the foot reach area is constructed and the analytical boundaries; of this area are found. This kinematic model is used when developing and approbating machine movement control algorithms and also to control the machine model in the servo drive mode. The development of the methods of modelling the hydraulically controlled robotics is proposed on the base of the modernization of the formal hierarchy of hybrid- time events in an extended form of the kinematic model on the base of a hybrid automatic with transitions.
      PubDate: 2023-07-10
      DOI: 10.1134/S1063783423010018
       
  • Fabrication of Magnetic Nanocomposite Photocatalysts Based on Coated
           Carbon Nanotube for Removing Toxic Dyes

    • Free pre-print version: Loading...

      Abstract: In this article, magnetic nanocomposite photocatalysts based on carbon nanotubes, coated with cobalt ferrite and zinc oxide were prepared using hydrothermal synthesis method. Then, their physical and chemical properties have been investigated using various techniques such as X-ray diffraction, scanning electron microscope, vibrating sample magnetometer and visible-ultraviolet spectroscopic analysis (UV-Vis). In the next step, the photocatalytic activity of the prepared photocatalysts for the removal of toxic dyes under visible light has been investigated. For this purpose, toxic dyes have been removed in the presence of photocatalyst and visible light under specific experimental conditions. It was found that under visible light, longer time is required, but under UV analysis, they degrade within 60 min. Then, using techniques such as UV electron absorption spectroscopy, the extent of dye removal has been measured. The results show that the magnetic nanocomposite photocatalysts based on carbon nanotubes, coated with cobalt ferrite and zinc oxide have high photocatalytic activity for the removal of toxic dyes under visible light. Also, the results show that coating the carbon nanotube with cobalt ferrite has a significant improvement in photocatalytic activity and increasing the amount of cobalt ferrite shows a substantial perfection in the removal of toxic dyes. Also, the magnetic nature of the prepared photocatalysts allows their easy recovery after use.
      PubDate: 2023-06-01
      DOI: 10.1134/S1063783423600048
       
  • Electronic Structure, Elastic, and Thermodynamic Properties of AgMO3 (M =
           Nb, Ta)

    • Free pre-print version: Loading...

      Abstract: The electronic structure and elastic and thermodynamic properties of the AgMO3 (M = Nb, Ta) were investigated using first-principles calculations. The lattice parameters and volumes are in reasonable agreement with the experimental results. The calculated Cauchy’s pressure, Poisson’s ratio, and B/G ratio confirm the ductile nature of both the compounds. The variation in entropy (S), thermal expansion coefficient (α), constant volume heat capacity (Cv), and the constant pressure heat capacity Cp with temperature have been studied.
      PubDate: 2023-06-01
      DOI: 10.1134/S106378342360019X
       
  • Lattice Thermal Conductivity of Silicon and Germanium Core/Shell and
           Segmented Nanowires

    • Free pre-print version: Loading...

      Abstract: We investigated the phonon and thermal properties of the silicon- and germanium-nanowires, covered by SixGe1–x, plastic, diamond and SiO2 shells as well as Si-based segmented nanowires, consisting of segments of different sizes and/or materials. Acoustic phonon energies were calculated in the framework of the face-centered cubic cell model of the lattice vibrations, while thermal conductivity was investigated in the framework of Boltzmann transport equation approach within the relaxation time approximation. It was shown, that claddings with higher (lower) sound velocity strongly affect the phonon energy spectra and increase (decrease) the average phonon group velocity in core nanowire. It was demonstrated, that redistribution of the phonon modes in Si/Ge and Si/SiO2 segmented nanowires leads to a localization of the great amount of the phonon modes in nanowire segments, resulting in exclusion of such modes from the heat flow and suppression of the phonon thermal conduction (by a factor of 2–8) in comparison with generic silicon nanowires. Low values of the thermal conductivity of segmented nanowires make them prospective for thermoelectric and thermoinsulating applications.
      PubDate: 2023-06-01
      DOI: 10.1134/S1063783424600456
       
 
JournalTOCs
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
Email: journaltocs@hw.ac.uk
Tel: +00 44 (0)131 4513762
 


Your IP address: 34.204.198.73
 
Home (Search)
API
About JournalTOCs
News (blog, publications)
JournalTOCs on Twitter   JournalTOCs on Facebook

JournalTOCs © 2009-
JournalTOCs
 
 
  Subjects -> EARTH SCIENCES (Total: 771 journals)
    - EARTH SCIENCES (527 journals)
    - GEOLOGY (94 journals)
    - GEOPHYSICS (33 journals)
    - HYDROLOGY (29 journals)
    - OCEANOGRAPHY (88 journals)

EARTH SCIENCES (527 journals)            First | 1 2 3     

Showing 401 - 371 of 371 Journals sorted alphabetically
Radiocarbon     Hybrid Journal   (Followers: 13)
Remote Sensing     Open Access   (Followers: 60)
Remote Sensing Applications : Society and Environment     Full-text available via subscription   (Followers: 11)
Remote Sensing in Earth Systems Sciences     Hybrid Journal   (Followers: 5)
Remote Sensing Letters     Hybrid Journal   (Followers: 48)
Remote Sensing Science     Open Access   (Followers: 30)
Rendiconti Lincei     Hybrid Journal  
Reports on Geodesy and Geoinformatics     Open Access   (Followers: 6)
Reports on Mathematical Physics     Full-text available via subscription   (Followers: 2)
Reports on Progress in Physics     Full-text available via subscription   (Followers: 3)
Research & Reviews : Journal of Space Science & Technology     Full-text available via subscription   (Followers: 17)
Resource Geology     Hybrid Journal   (Followers: 6)
Resources, Environment and Sustainability     Open Access   (Followers: 4)
Reviews in Mineralogy and Geochemistry     Hybrid Journal   (Followers: 4)
Reviews of Modern Physics     Full-text available via subscription   (Followers: 32)
Revista Cerrados     Open Access  
Revista de Ingenieria Sismica     Open Access  
Revista de Investigaciones en Energía, Medio Ambiente y Tecnología     Open Access  
Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales     Open Access  
Revista de Teledetección     Open Access  
Revista Geológica de Chile     Open Access  
Revue Française de Géotechnique     Hybrid Journal   (Followers: 1)
Rock Mechanics and Rock Engineering     Hybrid Journal   (Followers: 7)
Rocks & Minerals     Hybrid Journal   (Followers: 3)
Russian Geology and Geophysics     Hybrid Journal   (Followers: 2)
Russian Journal of Mathematical Physics     Full-text available via subscription  
Russian Journal of Pacific Geology     Hybrid Journal  
Russian Physics Journal     Hybrid Journal   (Followers: 1)
Science China Earth Sciences     Hybrid Journal   (Followers: 3)
Science News     Hybrid Journal   (Followers: 10)
Science of Remote Sensing     Open Access   (Followers: 8)
Scientific Annals of Stefan cel Mare University of Suceava. Geography Series     Open Access  
Scientific Reports     Open Access   (Followers: 83)
Sedimentary Geology     Hybrid Journal   (Followers: 19)
Sedimentology     Hybrid Journal   (Followers: 14)
Seismic Instruments     Hybrid Journal   (Followers: 1)
Seismological Research Letters     Full-text available via subscription   (Followers: 12)
Soil Dynamics and Earthquake Engineering     Hybrid Journal   (Followers: 14)
Soil Security     Open Access   (Followers: 6)
Solid Earth     Open Access   (Followers: 5)
Solid Earth Discussions     Open Access   (Followers: 1)
Solid Earth Sciences     Open Access   (Followers: 1)
South African Journal of Geomatics     Open Access   (Followers: 2)
Standort - Zeitschrift für angewandte Geographie     Hybrid Journal   (Followers: 3)
Stratigraphy and Geological Correlation     Full-text available via subscription   (Followers: 2)
Studia Geophysica et Geodaetica     Hybrid Journal   (Followers: 1)
Survey Review     Hybrid Journal   (Followers: 6)
Surveys in Geophysics     Hybrid Journal   (Followers: 3)
Swiss Journal of Palaeontology     Hybrid Journal   (Followers: 4)
Tectonics     Full-text available via subscription   (Followers: 15)
Tectonophysics     Hybrid Journal   (Followers: 24)
Tellus A     Open Access   (Followers: 20)
Tellus B     Open Access   (Followers: 20)
Terra Nova     Hybrid Journal   (Followers: 5)
The Compass : Earth Science Journal of Sigma Gamma Epsilon     Open Access  
The Holocene     Hybrid Journal   (Followers: 16)
The Leading Edge     Hybrid Journal   (Followers: 1)
Transportation Infrastructure Geotechnology     Hybrid Journal   (Followers: 8)
UD y la Geomática     Open Access  
Unconventional Resources     Open Access  
Underwater Technology: The International Journal of the Society for Underwater     Full-text available via subscription   (Followers: 1)
Unoesc & Ciência - ACET     Open Access  
Vadose Zone Journal     Open Access   (Followers: 5)
Volcanica     Open Access  
Water     Open Access   (Followers: 11)
Water International     Hybrid Journal   (Followers: 19)
Water Resources     Hybrid Journal   (Followers: 21)
Water Resources Research     Full-text available via subscription   (Followers: 101)
Watershed Ecology and the Environment     Open Access  
Weather, Climate, and Society     Hybrid Journal   (Followers: 14)
Wiley Interdisciplinary Reviews - Climate Change     Hybrid Journal   (Followers: 34)
World Environment     Open Access   (Followers: 1)
Yearbook of the Association of Pacific Coast Geographers     Full-text available via subscription   (Followers: 2)
Yugra State University Bulletin     Open Access   (Followers: 1)
Zeitschrift der Deutschen Gesellschaft für Geowissenschaften     Full-text available via subscription   (Followers: 3)
Zeitschrift für Geomorphologie     Full-text available via subscription   (Followers: 5)
Zitteliana     Open Access   (Followers: 3)
Землеустрій, кадастр і моніторинг земель     Open Access   (Followers: 1)

  First | 1 2 3     

Similar Journals
Similar Journals
HOME > Browse the 73 Subjects covered by JournalTOCs  
SubjectTotal Journals
 
 
JournalTOCs
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
Email: journaltocs@hw.ac.uk
Tel: +00 44 (0)131 4513762
 


Your IP address: 34.204.198.73
 
Home (Search)
API
About JournalTOCs
News (blog, publications)
JournalTOCs on Twitter   JournalTOCs on Facebook

JournalTOCs © 2009-