Essays about: "PSD"

Showing result 21 - 25 of 72 essays containing the word PSD.

  1. 21. Gå mot naturen : ett gestaltningsförslag för Inre hamnen, Söderhamn

    University essay from SLU/Dept. of Urban and Rural Development

    Author : Käthy Janstad; Maja Vidarsson; [2022]
    Keywords : PSD; gröna miljöer; blåa miljöer; hälsa;

    Abstract : Forskningen visar att gröna miljöer har en positiv påverkan på människors hälsa genom att bidra till socialt, fysiskt och mentalt välbefinnande. Även senare tids forskning påvisar att blåa miljöer har en positiv inverkan på människors hälsa. READ MORE

  2. 22. Constructing an optical tweezers instrumentation and evaluation of trapping stiffness using the power spectrum method

    University essay from Umeå universitet/Institutionen för fysik

    Author : Haoxiang Yang; [2022]
    Keywords : ;

    Abstract : Optical tweezers can trap micron-sized objects such as cells, bacteria, and microspheres, and has become an important instrument for measuring forces associated with various physical and biological phenomena. In this thesis work, I constructed an optical tweezers instrument to trap 2µm diameter beads using a HeNe-laser operating with a wavelength of 632. READ MORE

  3. 23. Characterization of Metal Powders in Electron Beam Powder Bed Fusion : Regarding particle size distribution of the finished part

    University essay from KTH/Materialvetenskap

    Author : Mattias Jerhamre Engström; Saman Sharif Hedås; [2022]
    Keywords : ;

    Abstract : As the manufacturing industry looks for better ways to create complex parts using sustainable and efficient methods, the additive manufacturing sector is taking a step forward. Additive manufacturing brings with it a large reduction in material used and the complex structures that can be created are not something to overlook. READ MORE

  4. 24. Comparing different methods of measuring particle size for pharmaceutical excipients

    University essay from Lunds universitet/Livsmedelsteknik och nutrition (master)

    Author : Jiawen Wang; [2022]
    Keywords : particle size; comparison; Malvern analysis; Qicpic analysis; Pharmaceutical technology; Technology and Engineering;

    Abstract : In pharmaceutical science, particle size is one of the most fundamental parameters of materials, but different particle-sizing analysis methods lack a uniform standard for measuring irregular particle size, making it difficult to compare the accuracy and applicability of different particle-sizing analysis methods. Experiments on excipients used in pharmaceuticals are carried out in this paper by laser diffraction analysis (Malvern wet and dry), dynamic image analysis (Qicpic), and microscopic methods (Qicpic, SEM, and light microscopy) to determine the applicability and limitations of each method, as well as to clarify their advantages and disadvantages. READ MORE

  5. 25. Experimental acceleration Measurements and Finite Elements Modeling

    University essay from Linnéuniversitetet/Institutionen för maskinteknik (MT)

    Author : Ibrahim Alnimairi; Salim Arrabi; [2021]
    Keywords : signal processing. PSD; mode shapes; Mdof; Sdof; PSDT-SVD; finite element modelling;

    Abstract : Heavy crushing machines under their production shifts, creates various levels of vibration, noise and dynamic forces which can be transferred to other parts of the industrial unit. Such kind of factors applies continuous forces on machine parts which can cause gradual fatigue, creep and eventually failure of machine. READ MORE