Impurity Effects and Spin Polarizations in a Narrow Quantum Hall System

The temperature dependence of electron spin polarization for a narrow quantum Hall system shows behavior analogous to that of a two-dimensional system at major filling factors. At the lowest half-filled quantum Hall state for which no two-dimensional analog exists, we find a stable spin partially-polarized system. Periodic Gaussian repulsive impurities (antidots) in such a system leads to novel spin transitions at $\nu=\frac13$ and $\nu=\frac12$ and the pair-correlation functions provide clues about nature of different ground states in the system. These results can be explored in optical spectroscopy and optically pumped NMR Knight shift measurements.Comment: 4 pages, REVTEX, and 4 .ps file

Effect of Fish Meal Level on Growth, Food Digestibility and Fur Properties of Farmed Mink (Mustela Vison)

. Our study sought to determine the effects of normal vs high fish meal levels in the diet on the growing-furring process and apparent food digestibility of farmed male mink (Mustela vison). The subjects were two groups of juvenile dark mink born in May and weaned in August. The experiment started after weaning with two diet groups: (1) normal level of fish meal (NOR), i.e. 4.5% of diet, and (2) high level of fish meal (HIGH), i.e. 10.0% of diet. We found that the mink on the high fishmeal (HIGH) diet consumed slightly more fresh food than the mink on the normal fishmeal diet (NOR) (total consumption 30.6 kg vs 28.1 kg). The mink in the NOR group ingested almost the same amount of food as dry matter and energy as the mink in the HIGH group. On October 22, the body weights of the HIGH group animals were significantly higher than those of the NOR animals. At the final weighing on December 3 (at pelting), a tendency for the body weights of NOR mink was noted to be lower than those of HIGH mink. Skin length was significantly shorter in NOR than in HIGH mink. The number of white wool skins (i.e. fur defect) was higher in NOR than in HIGH mink (4 vs 2 skins). Statistically significant differences in other fur variables were not found between the groups. The apparent digestibility of protein, fat and organic matter was significantly better in HIGH than in NOR mink. Our findings tempt us to conclude that the proportion of fish products, at least those of fishmeal, can be increased in the diet of farm-raised juvenile mink

Effect of fish meal level on growth, food digestibility and fur properties of farmed mink (Mustela vison)

v2012o

Sosiaaliturva ja elämänvaiheet : Suomen sosiaaliturvan kehitys esimerkkien ja tilastojen valossa

Sosiaaliturva ja elämänvaiheet kuvaa hyvinvointivaltiota sammakkoperspektiivistä. Kirja jäljittää kolmen nuoren esimerkkihenkilön – Ainon, Pertun ja Viivin – avulla sitä, kuinka paljon kukakin saa hyvinvointivaltiolta ja kuinka paljon maksaa sille eri elämänvaiheissa. Tarkastelu ulottuu jopa 70 vuoden päähän. Miten elämän mittaiseen sosiaaliturvaan vaikuttaa lumilautailuonnettomuus nuorena, pätkätyöt keski-iässä tai vanhuuden viimeiset vuodet vanhainkodissa? Kyseessä on helppolukuinen johdatus sosiaaliturvan historiaan, nykyiseen sosiaaliturvajärjestelmään ja sen rahoitukseen sekä tulevaisuuden näköaloihin. Kirja kertoo, miten suomalainen sosiaaliturva on elämässä mukana ja muutoksissa tukena. Kirjassa käsitellään paitsi tulonsiirtojen ja palveluiden myös kulutuksen ja verotuksen jakautumista eri elämänvaiheiden aikana. Viimeisessä luvussa otetaan kantaa ajankohtaiseen kysymykseen, riittävätkö rahat sosiaaliturvaan myös 70 vuoden kuluttua.10,00 euro

Theory of the Half-Polarized Quantum Hall States

We report a theoretical analysis of the half-polarized quantum Hall states observed in a recent experiment. Our numerical results indicate that the ground state energy of the quantum Hall $\nu= 2/3$ and $\nu= 2/5$ states versus spin polarization has a downward cusp at half the maximal spin polarization. We map the two-component fermion system onto a system of excitons and describe the ground state as a liquid state of excitons with non-zero values of exciton angular momentum.Comment: 4 pages (RevTeX), 3 figures (PostScript), added reference

Cloud-base vertical velocity statistics: a comparison between an atmospheric mesoscale model and remote sensing observations

The statistics of cloud-base vertical velocity simulated by the non-hydrostatic mesoscale model AROME are compared with Cloudnet remote sensing observations at two locations: the ARM SGP site in Central Oklahoma, and the DWD observatory at Lindenberg, Germany. The results show that, as expected, AROME significantly underestimates the variability of vertical velocity at cloud-base compared to observations at their nominal resolution; the standard deviation of vertical velocity in the model is typically 4-6 times smaller than observed, and even more during the winter at Lindenberg. Averaging the observations to the horizontal scale corresponding to the physical grid spacing of AROME (2.5 km) explains 70-80% of the underestimation by the model. Further averaging of the observations in the horizontal is required to match the model values for the standard deviation in vertical velocity. This indicates an effective horizontal resolution for the AROME model of at least 4 times the physically-defined grid spacing. The results illustrate the need for special treatment of sub-grid scale variability of vertical velocities in kilometer-scale atmospheric models, if processes such as aerosol-cloud interactions are to be included in the future

Single nucleotide polymorphisms to discriminate different classes of hybrid between wild Atlantic salmon and aquaculture escapees

201

Hyvinvoinnin turvaamisen rajat : Näköaloja talouskriisiin ja hyvinvointivaltion kehitykseen Suomessa

Miten syksyllä 2008 alkanut globaali talouskriisi vaikuttaa pitkällä aikavälillä suomalaiseen hyvinvointivaltioon? Jos olisimme antiikin Kreikassa, voisimme mennä Delfoin oraakkelin luo Apollonin temppeliin ja esittää tämän kysymyksen ennuspapittarelle. Eräänä lokakuun päivänä 2009 Kelan tiloihin kokoontui joukko suomalaisia hyvinvointivaltion huippuasiantuntijoita. He kertoivat julkisen talouden, kansalaisten toimeentulon ja terveyden näkökulmista kolmelle ”professori-oraakkelille” eli tanskalaiselle Nina Smithille, ruotsalaiselle Johan Fritzellille ja saksalaisille Karl Hinrichsille Suomen kokemuksista edellisestä, 1990-luvun alun lamasta, sen jälkeisestä kehityksestä sekä omista tulevaisuuden arvioistaan. Seuraavana päivänä oraakkelit lausuivat ennustuksensa, joka paljastetaan tässä raportissa.10,00 euro

Theory of Incompressible States in a Narrow Channel

We report on the properties of a system of interacting electrons in a narrow channel in the quantum Hall effect regime. It is shown that an increase in the strength of the Coulomb interaction causes abrupt changes in the width of the charge-density profile of translationally invariant states. We derive a phase diagram which includes many of the stable odd-denominator states as well as a novel fractional quantum Hall state at lowest half-filled Landau level. The collective mode evaluated at the half-filled case is strikingly similar to that for an odd-denominator fractional quantum Hall state.Comment: 4 pages, REVTEX, and 4 .ps file