Natural Science and Reviews

  • Motor Vehicle Maintenance Scheduling Model Based on Genetic algorithm

    To solve the problem of EMU maintenance planning time, we established a hybrid linear programming model based on adaptive genetic algorithm. According to the different levels of bullet train maintenance and the different arrival time, the constraint conditions are found, and the overall minimum maintenance time is taken as the objective function. Then the problem is transformed into a hybrid Flow-shop scheduling problem with unique process constraints, and an adaptive genetic algorithm is used to solve it again. It is concluded that the total maintenance takes 1125 minutes, and no blockage occurred in all EMU during the maintenance period. To provide a consistent basis for bullet train maintenance time and scheduling.

  • Integrated Application of Organic and Inorganic Fertilizer to Improve Nutritive Quality of Maize and Soybean Intercrop

    A field experiment was conducted to evaluate the use of integrated fertilizers on the nutritive quality of maize and soybean in intercropping system in 2014 at field 2, Universiti Putra Malaysia (UPM) Serdang, Selangor, Malaysia. Fertilizer applications were either in the form of inorganic (NPK) or poultry manure (PM). Treatments comprised of combinations of three intercropping systems (sole maize, sole soybean, and maize + soybean) and four nutrient managements (control, 100% NPK, 100% PM and 50 % NPK + 50% PM). The experiment was laid out in a randomized complete block design (RCBD) with 3 replications. Results showed that intercropping maize with soybean significantly reduced protein and nutrient content of soybean; however, the oil content of soybean, sugar, oil, protein and nutrient content of maize were not significantly affected by intercropping. Sole and integrated application of NPK and PM increased the quality of both crops over control. Integrated application of 50% NPK and 50% PM fertilizer gave higher oil, protein and nutrient content of both crops. Use of 100 % PM gave better quality than the application of NPK fertilizer for both crops.

  • Design and realization of fault simulation software for cooling water system of marine diesel engine

    Aiming at the problems of high training cost and high safety risk in the training of marine diesel engine cooling water system operators, a mathematical model is established based on the technical parameters, working conditions and measured data of MTU20V956TB92 marine diesel engine cooling water system. The simulation software of diesel engine cooling water system faults is developed by using Visual Studio 2012 platform, which realizes from mathematical model to code. Conversion to simulate the working state of ship cooling water system in normal operation and failure. The results show that the system can accurately simulate the normal operation and fault state of the cooling water system, and improve the actual ability of the trainers to respond to the fault of the ship cooling water system.

  • Electric Vehicle Intelligent Service Cloud Platform

    In recent years, electric vehicles have developed rapidly around the world. A series of research and services for electric vehicles are also rapidly developing. Faced with the broad market demand, Yichang Ju Calling Company launched the intelligent charging and switching service cloud platform “Gathering”. Based on technologies such as Internet of Things, Internet, and big data analysis, the solution builds an intelligent vehicle cloud platform for electric vehicles. The intelligent cloud platform has an electric vehicle charging and reloading reservation, a next destination navigation charging and switching plan, and a private charging pile sharing. Charging pile inquiry and reservation, fee settlement, user community communication and other functions make the electric vehicle charging service platform more intelligent and convenient. At the same time, as a bridge between electric vehicles and charging stations, “Gathering” can combine the real-time electricity price, the degree of traffic congestion, the use of charging piles and the load of the power grid to plan more efficient and convenient charging suggestions for users. Make full use of power resources to reduce the load and cost of the grid.

  • Study on the pollution mechanism of drinking water source water to ultrafiltration membrane

    The effects of particulate matter (represented by humic acid, kaolin and algae) on ultrafiltration membranes in micro-polluted water sources were investigated, and the mechanism of ultrafiltration membranes was further understood with the change of membrane flux and transmembrane pressure difference. The results showed that the removal rate of kaolin and algae by UF membrane was over 99%, while the removal rate of humic acid was only about 72%. Moreover, the extent of UF membrane fouling caused by humic acid was larger than that caused by kaolin and algae. The higher the concentration of humic acid, the more serious the membrane fouling was. Ultrafiltration membranes contaminated by humic acid were washed by 0.05mol/L NaOH alkali and 0.05mol/L HCL acid. The permeability of the membranes was restored to 91.24% of the cleaned surface, which was better than that of pure water, sodium hypochlorite and sodium hydroxide. It can provide better guidance for choosing appropriate cleaning agents for ultrafiltration membrane fouling.

  • The Use of Play as a Tool for Community Science Teaching

    The teaching of science has, over the last years, gained space in academic discussions, due to the need to use more attractive methods and strategies for students. The tendency to combine the playful with the science teaching has been gaining prominence in the classrooms, and it can be observed the use of educational games, comic books, cartoons, plays, drawings. Clown therapy involves a professional who uses techniques to show and generate health from other angles of life. Laughter therapy is widespread in hospitals, this practice has become relevant for improving treatment in hospitalized children. This artistic resource is taken in schools, kindergartens and NGOs and enables personal development, allowing the critical spirit and the exercise of citizenship to be broadened. The objective of this work was to develop art workshops that connect social, ecological and cultural aspects, seeking the use of the ludic in science teaching. This work was carried out in an NGO located in Bode community, Pina neighborhood in Recife – PE, with children from the local community, between 5 and 12 years old. Teaching activities were selected to stimulate children’s reflective and scientific thinking associated with popular knowledge. In order to make the sustainability workshop a previous conversation was held with the children, with the purpose of knowing the group’s knowledge about the theme worked. Then toys were made of recyclable material, such as: pet bottle carts; Bookmark pages with popsicle stick and straw flute. For the insect assembly workshop, a question was made about the collected organisms, investigating the children’s knowledge about these organisms, their ecological importance and the characteristics that differentiate them. Next, the specimens were assembled. For the plant analysis workshop, an explanation of the plant anatomy and its function was performed. Then slides were made for later analysis under a microscope. It was…

  • Plant Species Diversity for Climate Change Adaptation and Mitigation

    Climate is one of the most important factors that influence and determine the behavior, abundance and distribution of species, as well as having a strong influence on the ecology of habitats and ecosystems structure. Changes in the behavior, abundance and distribution of species are linked to climate. Diversity and plant species are highly interlinked and the relationship between biodiversity and climate change should be explored from several perspectives. This variety provides the building blocks to adapt to changing environmental conditions which are caused due to climate change. Conserved habitats can remove carbon dioxide from the atmosphere, thus helping to address climate change by storing carbon in the plant biomass. Climate is one of the major limiting factors which determine the survival and growth of plants. The conservation and restoration of biodiversity and ecosystem services can play a key role in helping societies to adapt to climate change. Biodiversity is affected by climate change, but biodiversity, through the ecosystem services and function it supports, also makes an important contribution to both climate-change mitigation and adaptation. Maintenance of agro-biodiversity and carbon sequestration through the process of photosynthesis is the two important and complementary environmental services of agro-ecosystems. Climate change affects biodiversity and one of the causes of biodiversity loss. At the same time climate change will accelerate further if biodiversity and ecosystems are not effectively protected. Generally due to the variation of genetic makeup within pants, different plant species diversity plays a great role in climate change adaption and mitigation process.

  • Thermodynamics of the origin of life, evolution, and aging

    The main provisions of hierarchical thermodynamics created on the basis of Gibbs thermodynamics are presented. The thermodynamic theory of the origin of life, its evolution and the aging of living beings is presented. The theory considers the change in the specific Gibbs function of the formation of structures of different hierarchies, that is, the change in the comparative stability of these structures in the course of their evolutionary transformations. The described approach should be considered structural kinetic thermodynamics, which allows us not to consider any kinetic mechanisms of processes in the evolution of various hierarchical structures. It is asserted that the principle of substance stability determines the direction of the processes of the origin of life and its evolutionary transformations. The thermodynamic theory of aging and thermodynamic nutrition allows predictions concerning healthy life and its duration. It is shown that hierarchical thermodynamics is the physical foundation of expanded Darwinism. All the conclusions and predictions of the theory are confirmed by numerous observations and experimental facts.

  • The Unified Theory of Physics

    The unified theory of physics is based on both symmetry physics and contrast physics to unify all physical laws and phenomena, all four fundamental forces, and all elementary particles. Conventional symmetry physics preserves the physical features of a system under transformation by a symmetry operator. In unconventional contrast physics, yin and yang constitute a binary yinyang system of contrary physical properties by yin and yang operators. The three fundamental symmetry operators transform the three fundamental yinyang systems (inclusiveness-exclusiveness, rest-movement, and composite-individual) into the unified theory of physics. In the inclusiveness-exclusiveness system, a particle is transformed into boson with inclusive occupation of position by the integer spin operator, while a particle is transformed into fermion with exclusive occupation of position by the ½ spin operator. The fundamental symmetry operator is supersymmetry to result in M-theory and cosmology. In the rest-movement system, a moving massless particle (kinetic energy) is transformed into a resting massive particle (rest mass) by the attachment space (denoted as 1) operator to explain the Higgs field, while a resting massive particle is transformed into a moving massless particle by the detachment space (denoted as 0) operator to explain the reverse Higgs field. The fundamental symmetry operator is the symmetrical combination of attachment space and detachment space to bring about the three space structures: binary partition space, (1)n(0)n, for wave-particle duality, binary miscible space, (1+0)n, for relativity, and binary lattice space, (1 0)n, for virtual particles in quantum field theory. In the composite-individual system, particles are transformed into fractional charge quark composite by the fractional electric charge operator, while particles are transformed into integral charge particle individuals by the integral electric charge operator. The fundamental symmetry operator is the symmetrical combination of quarks, leptons, and bosons to constitute the periodic table of elementary particles which calculates accurately the particle…

  • A Vortex Formulation of Quantum Physics Setting Discrete Quantum States into Continuous Space-time

    Any quantum state can be described by a vortex, which is mathematically a multi-vector and physically a united-measure. When the vortex formulation of quantum physics is introduced, Hamilton principle keeps its core position in physical analysis. While the global characteristics are described by Lagranrian function for dynamics and double complex core function for stable states, Schrödinger equation and gauge symmetries reveal local characteristics. The vortex-based physics provides a new unified understanding of wave-particle duality and uncertainty, quantum entanglement and teleportation, as well as quantum information and computation, with setting discrete quantum states into continuous space-time for keeping concordance of methodology in processing micro-particle and macro-galaxy. Two fundamental experiments are suggested to correct and verify the physical formulation.