Sökning: "multiplicative subgroups"

Hittade 4 avhandlingar innehållade orden multiplicative subgroups.

  1. 1. Additively and multiplicatively structured sets

    Författare :Dmitrii Zhelezov; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Product set; arithmetic progression; multiplication theorem; sumset; additive energy; multiplicative energy; sum-product phenomenon; multiplicative subgroups; Gauss sums; sum-product phenomenon;

    Sammanfattning : .... LÄS MER

  3. 2. Lung cancer in males : an epidemiological study in northern Sweden with special regard to smoking and occupation

    Författare :Lena Damber; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; case-control study; epidemiology; lung cancer; occupational risk; factors; smoking; radon; cell types; validity;

    Sammanfattning : In a case-control study comprising 589 cases of male lung cancer in northern Sweden longitudinal data concerning occupations, employments and smoking habits were collected by questionnaires.Pipe smoking was as common as cigarette smoking and gave very similar relative risk. LÄS MER

  4. 3. Metabolic factors and bladder cancer risk and mortality. Studies to approach causal associations and interactions with smoking and genetic variants

    Författare :Stanley Teleka; Registerbaserad epidemiologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Bladder cancer; metabolic factors; Association; Interaction; Blood pressure; BMI; statistical analysis; Mendelian Randomization Analysis;

    Sammanfattning : Urothelial bladder cancer (BC) is one of the most common cancers in developed countries. It has one of the highest recurrence rates among solid tumors, resulting in regular treatment and follow-up, making it one of the most expensive cancers to treat, and a significant public health burden. LÄS MER

  5. 4. Water erosion modeling using fractal rainfall disaggregation- a study in semiarid Tunisia

    Författare :Sihem Jebari; Avdelningen för Teknisk vattenresurslära; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; reservoir siltation; regionalization; fractal analysis; Atlasic mountain range; erosive events; semiarid area; soil loss; Tunisia.; Soil erosion; semiarid; Tunisia; rainfall; fractal; diaggregation;

    Sammanfattning : In the Tunisian semiarid area, water erosion processes have led to negative economic and environmental consequences in a context of limited water resources. To characterize and predict these degradation phenomena, a comprehensive high-resolution data base on erosive rainfall, together with siltation records for 28 small reservoirs were analyzed. LÄS MER