نتایج جستجو برای: mmcs
تعداد نتایج: 524 فیلتر نتایج به سال:
Introduction: Technology can improve the health care outcomes of elderly. However, there are many barriers to adoption mobile monitoring and systems (MMCs) by elderly reported in literature. The main purpose this research was investigate why people do not adopt MMCs quality their care.
 
 Methods: study made use semi-structured interviews collect data Buffalo City Metropolitan Municip...
in this research, al-ni particle composite strips are formed by accumulative roll bonding (arb) process using al strips and ni powder. the rule of arb cycles and volume percentage (vol%) of ni powder on the microstructure, wear resistance and mechanical properties of the formed composites are investigated. according to the tensile test results, the yield stress and tensile strengths of the al -...
Autonomous chromosomes are generated in yeast (yeast artificial chromosomes) and human fibrosarcoma cells (human artificial chromosomes) by introducing purified DNA fragments that nucleate a kinetochore, replicate, and segregate to daughter cells. These autonomous minichromosomes are convenient for manipulating and delivering DNA segments containing multiple genes. In contrast, commercial produ...
Coulomb explosion imaging, which is the reconstruction of a molecular structure by measuring three-dimensional momenta atomic ions formed multiply charged cations (MMCs), has been utilized widely. In contrast, intact MMCs, whose properties and reactions are interesting from both fundamental applied scientific perspectives, themselves have little explored to date. This study demonstrates that fo...
There is a developing interest in efficient materials automobile and aerospace fields that involves the improvement of metal matrix composites (MMCs) with great properties which incorporate higher strength, hardness stiffness, better wear destructive resistance along thermal properties. This work deals evaluation mechanical newly developed hybrid MMC Al 5059/B4C/Al2O3 produced by stir casting m...
This paper presents an evolution of control systems Modular Multilevel Converters (MMCs) focusing on the internal voltages and currents dynamics. MMCs have passive components inside converter that create extra dynamics compared to conventional VSCs. Some schemes do not consider these may still stabilize system asymptotically thanks linearisation in modulation step. However are less robust becau...
Abstract This study presents global asymptotic stability verification of submodule capacitor voltage self-converging modular multilevel converters (SC-MMCs) according to the characteristic root method, which constructs a switching state matrix for balancing control. The mathematical model MMC is established in form state-space equation. It proved that SC-MMCs have at certain time from perspecti...
Machining of metal matrix composites (MMCs) has now become an essential task in shaping them to their final usable forms for various industrial applications. These machining operations may range from drilling simple through holes cutting and the into complex shapes. Determination optimal process parameters during presents a combinatorial optimization problem, which turn out be more due involvem...
Instability and oscillation issues originating in high-voltage direct current (HVDC) systems comprising modular multilevel converters (MMCs) are gaining increasing interest the research community. To detect such phenomena advance, considerable effort has been devoted recently to developing MMC models for small-signal analysis. The derivation of is a challenging task due topology complex control...
Abstract Nowadays, as an emerging technology, additive manufacturing (AM) has received numerous attentions from researchers around the world. The method comprises layer-by-layer of products according to 3D CAD models objects. Among other things, AM is capable producing metal matrix composites (MMCs). Hence, plenty works in literature are dedicated developing different types MMCs through process...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید