Search results for "asymmetria"

Asymmetries in reproductive anatomy : insights from promiscuous songbirds

2019

Directional asymmetry in gonad size is commonly observed in vertebrates and is particularly pronounced in birds, where the left testis is frequently larger than the right. The adaptive significance of directional asymmetry in testis size is poorly understood, and whether it extends beyond the testes (i.e. side-correspondent asymmetry along the reproductive tract) has rarely been considered. Using the Maluridae, a songbird family exhibiting variation in levels of sperm competition and directional testis asymmetry, yet similar in ecology and life history, we investigated the relative roles of side-correspondence and sperm competition on male reproductive tract asymmetry at both inter- and int…

Aineeton pääoma tuotantovarallisuutena luovien alojen perheyrityksissä

2012

Tässä tutkimuksessa tarkasteltiin aineetonta pääomaa tuotantovarallisuutena luovien alojen perheyrityksissä. Aineeton omaisuus voi muodostaa yrityksen keskeisen kilpailukyvyn, mutta sitä voi olla esimerkiksi rahoittajan näkökulmasta vaikea määritellä vakuudeksi. Tutkimuksen tavoitteena olikin selvittää kuinka yrittäjät näkevät aineettoman pääoman yrityksessään ja kuinka aineettoman pääoman arvo käytännössä määritetään. Lisäksi tutkimusmielenkiinnon kohteena oli asymmetria käytännössä ja aineettoman pääoman merkitys erityisesti perheyrityksessä. Tutkimus on tehty laadullisella tutkimusotteella, koska aineettoman pääoman tul- kintoja ja merkitystä yri…

Transversus abdominis and multifidus asymmetry in runners measured by MRI: a cross-sectional study

2019

ObjectiveThe transversus abdominis muscle (TrA) is active during running as a secondary respiratory muscle and acts, together with the multifidus, as trunk stabiliser. The purpose of this study was to determine size and symmetry of TrA and multifidus muscles at rest and with contraction in endurance runners without low back pain.DesignCross-sectional study.SettingA medical imaging centre in Melbourne, Australia.ParticipantsThirty middle-aged (43years±7) endurance-trained male (n=18) and female (n=12) runners without current or history of low back pain.Outcome measuresMRI at rest and with the core engaged. The TrA and multifidus muscles were measured for thickness and length (TrA) and antero…

Dark matter and baryogenesis in Higgs portal models

2016

This work focuses on two of the main issues in current understanding of particle physics described by the Standard Model. The Standard Model, despite of its success, is not complete. Existence of dark matter has been clearly verified, but its nature is unknown. Also, the baryon asymmetry in the Universe hints that the Standard Model has to be extended. In this thesis we study Higgs portal models which both contain dark matter candidates, and can provide for a successful production of the baryon asymmetry.

Onko terapian kontekstilla merkitystä? kotona tapahtuvan terapian erityispiirteiden tarkastelua kriittisen diskurssianalyysin näkökulmasta

2008

Functional Basis of Asymmetrical Lower-Body Skeletal Morphology in Professional Australian Rules Footballers

2020

Hart, NH, Newton, RU, Weber, J, Spiteri, T, Rantalainen, T, Dobbin, M, Chivers, P, and Nimphius, S. Functional basis of asymmetrical lower-body skeletal morphology in elite Australian footballers. J Strength Cond Res 34(3): 791–799, 2020—Bone strength is a product of its material and structural properties and is highly responsive to mechanical load. Given the measureable and adaptable features of bone, and thus relevance to medical screening, injury prevention, and injury management in athletes, this study describes the lower-body skeletal morphology of professional Australian rules footballers. Using a cross-sectional and quantitative study design, 54 professional Australian rules football…

Asymmetrical muscle strength deficit, mobility limitation and aquatic resistance training in persons with knee osteoarthritis

2013

Asymmetric news effects on exchange rate volatility

2008

Asymmetrical lower-limb muscle strenght deficit in older people

2008

The aim was to study causes and consequences of asymmetrical strength deficit, i.e. difference in muscle strength between the lower-limbs, and the effects of progressive resistance training in clinical and non-clinical populations of older people.Data of three larger studies were used. Healthy 63-75-year-old women (n=403-419), 73-96-year-old women 1-13 weeks after hip fracture (n=43), and 60-85-year-old men and women ½-7 years after hip fracture (n=79) were studied. A randomized controlled trial of strength-power training aiming to reduce the lower-limb side-to-side difference was performed (n=46). Leg extension power, isometric knee extension torque, rate of force development, walking and …

Organocatalytic Oxa-Michael/Michael/Michael/Aldol Condensation Quadruple Domino Sequence : Asymmetric Synthesis of Tricyclic Chromanes

2018

An efficient and highly stereoselective one-pot, four-component synthesis of functionalized tricyclic chromanes has been achieved through an organocatalyzed quadruple domino reaction. The reaction sequence involves an oxa-Michael/Michael/Michael/aldol condensation between alcohols, 2 equiv of acrolein, and nitrochromenes to generate the pharmaceutically important tricyclic chromanes bearing three contiguous stereogenic centers including a chiral tetrasubstituted carbon center in good domino yields (30–70%) and excellent diastereo- and enantioselectivities (>20:1 dr and >99% ee). peerReviewed