Sökning: "burden dynamics"

Visar resultat 1 - 5 av 57 avhandlingar innehållade orden burden dynamics.

  1. 1. Burden Dynamics and Fragmentation

    Författare :Nikolaos Petropoulos; Zongxian Zhang; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mining and Rock Engineering; Gruv- och berganläggningsteknik;

    Sammanfattning : Drill and blast is a dominant technique in several surface and underground mines in the world. The purpose of this technique is to break rock mass into fragments, which can be handled by mining equipment. The identified major influencing factors in rock blasting are stress waves and gas pressurization. LÄS MER

  3. 2. Multi-Resistance Plasmids : Fitness Costs, Dynamics and Evolution

    Författare :Fredrika Rajer; Linus Sandegren; Pål Jarle Johnsen; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; multi-resistance plasmids; evolution; fitness cost; dynamics; escherichia coli; ESBL; gene amplification; β-lactamase inhibitor; Biologi med inriktning mot mikrobiologi; Biology with specialization in Microbiology;

    Sammanfattning : Antibiotic resistance is an escalating problem, not only due to less desirable treatment options and outcome, but also due to the economic burden to health care caused by resistant pathogens. Since the process of developing new antibiotics is slow, we need to carefully consider the usage of the antibiotics still available. LÄS MER

  4. 3. Improved understanding of sublevel blasting : Determination of the extent of the compacted zone, its properties and the effects on caving

    Författare :Nikolaos Petropoulos; Daniel Johansson; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; sublevel mining; compaction; confining material; confined blast; impact tests; burden dynamics; coarse-grained material; Mining and Rock Engineering; Gruv- och berganläggningsteknik;

    Sammanfattning : Sublevel caving (SLC) is a mass mining method relying on the flowability of the blasted material. The ore is blasted in slices against caved material which is mainly waste rock. The result of the confined blast is greatly influenced by the interaction between the blasted material and the caved material. LÄS MER

  5. 4. Modeling human gut microbiota: from steady states to dynamic systems

    Författare :Hao Luo; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; dynamics.; metabolic modeling; genome-scale metabolic model; gut microbiota; cybernetic model;

    Sammanfattning : Human gut microbes are an essential part of human sub-microscopic systems and involved in many critical biological processes such as Type 2 diabetes (T2D) and osteoporosis. However, the underlying mechanisms are unclear. LÄS MER

  7. 5. Imported infections’ importance : global change driving Dengue dynamics

    Författare :Mikkel B. Quam; Joacim Rocklöv; Annelies Wilder-Smith; Eduardo Massad; Dave D. Chadee; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Dengue; Zika; Vector-borne Disease; Aedes; Global Change; Climate Change; Viral Evolution; Phylogenetics; Travel; Interconnectivity; Disease Modeling; Madeira; Italy; Japan; Europe;

    Sammanfattning : Background Dengue is a significant problem of international health concern. According to the World Health Organization in 2012, globally, dengue is “the most important mosquito borne viral disease” with incidence 30 higher than it had been 50 years ago. LÄS MER