— A curve over a field k is pointless if it has no k-rational points. We show that there exist pointless genus-3 hyperelliptic curves over a finite field Fq if and only if q 6 25, that there exist pointless smooth plane quartics over Fq if and only if either q 6 23 or q = 29 or q = 32, and that there exist pointless genus-4 curves over Fq if and only if q 6 49. Résumé (Courbes de genre 3 et4 sa...

Small-angle neutron scattering (SANS) measurements from thin sections of rock samples such as shales demand as great a scattering vector range as possible because the pores cover a wide range of sizes. The limitation of the scattering vector range for pinhole SANS requires slit-smeared ultra-SANS (USANS) measurements that need to be converted to pinhole geometry. The desmearing algorithm is onl...

In this paper we show that Gorensteinness, singularity categories and the finite generation condition Fg for Hochschild cohomology are invariants under arrow removal operation a dimensional algebra.

Syndiotactic polystyrene (sPS) is a crystalline polymer which has a unique property; it is able to form cocrystals with a wide range of chemical compounds, in which the guest molecules are confined in the vacancies of the host sPS crystalline region. Recently, it has been found that even polyethylene glycol oligomers with a molecular weight of more than several hundreds can be introduced into t...

We summarize recent theoretical and experimental work in the field of magnetic small-angle neutron scattering (SANS) of bulk ferromagnets. The response of the magnetization to spatially inhomogeneous magnetic anisotropy and magnetostatic stray fields is computed using linearized micromagnetic theory, and the ensuing spin-misalignment SANS is deduced. Analysis of experimental magnetic-field-depe...

Leukemia, unlike solid tumors, has no definite shape and spreads throughout the whole circulatory system, therefore the therapy of leukemia requires medication to stay longer in the circulatory system. Anisotropic nanoparticles, showing longer blood circulating life than that of isotropic nanoparticles reported in previous research, meet the demands of leukemia therapy. Based on this strategy, ...

L'atteinte neurologique périphérique étant plus fréquente que l'atteinte centrale au cours de Syndrome de Gougerot Sjogren (SGS) primitif. L'atteinte des paires crâniennes est rare dominée par l'atteinte de la cinquième, septième et huitième paire. Une atteinte isolée de la douzième paire est exceptionnelle et s'intègre généralement dans le cadre d'une atteinte multiple et récidivante des nerfs...

Typographersand printers often regard seriffed or roman typefaces as more legible and appropriate for reading material than typefaces without serifs. Authors contend that readers prefer roman above sans serif, that it is read faster, and that the comprehension rate is possibly higher when text is set in a roman typeface. The absence of satisfactory empirical data to prove these assumptions, and...

The structural and magnetic properties of a cobalt nanorod array have been studied by means of magnetic field dependent small-angle neutron scattering (SANS). Measurement of the unpolarized SANS cross section dΣ/dΩ of the saturated sample in the two scattering geometries where the applied magnetic field H is either perpendicular or parallel to the wavevector ki of the incoming neutron beam allo...