Evaluation of Infectious Disease Knowledge in Obstetrics and Gynecology and the Effects of Varying Durations of Training

Objective: The amount, origin, and resources of infectious disease knowledge in the field ofobstetrics and gynecology were investigated. If this knowledge is lacking, the exact length of the specific infectious disease training during residency should be defined to meet the ever-increasing knowledge required in training

Redescription and morphological variability of <i>Darwinula stevensoni</i> (Brady & Robertson, 1870) (Crustacea, Ostracoda)

The species Darwinula stevensoni is extensively redescribed. Morphological variability of both valves and soft parts is assessed in several geographical and climatically distant populations and is found to be minimal or non-existant. Only size significantly varies between populations and this can be attributed to the differences in ambient temperatures during the larval development. Number and shape of muscle scars also vary, but this both within and between populations. Valve shape and chaetotaxy of limbs are remarkably constant. One female from an Italian population has aberrant Mx2-palps, but this specimen is considered a teratological case. Earlier records of males of D. stevensoni and the taxonomic position of the infraorder Darwinulocopina within the suborder Podocopina are briefly rediscussed. A hypothesis on biological strategy of darwinulids is tested using data on morphological variability and taxonomic diversity

Taxonomic revision of the recent and Holocene representatives of the Family Darwinulidae (Crustacea, Ostracoda), with a description of three new genera

The Darwinulidae, the only surviving family of the superfamily Darwinuloidea, are revised and 28 extant species are retained. Twenty-six species (2 of which as yet formally undescribed) are allocated to 5 genera, 3 of which are here described as new; 2 species have an uncertain position within the family because of their insufficient original description are listed here as species inquirendae. New genera are characterised on combinations of soft part and valve characters, but the chaetotaxy of the limbs seems most conservative and most suitable the identification of genera. Darwinula s.s. and Microdarwinula are, with regard to recent species, monospecific.Alicenula nov. gen. is erected to compromise the 3 species of the former serricaudata-group. Vesalenula nov. gen. comprises the 8 species of the pagliolii-boteaigroup, as well as Darwinula danielopoli, which, together with two undescribed species from Cuba and Tunisia, is placed in a special group within this new genus. Penthesilenula nov. gen. comprises two species-groups, with 10 species in total: 7 species in the incae-group, exclusively occurring in the southern Hemisphere, and 3 species in the africana-group. The latter group also contains P.malayica and P. brasiliensis, which occur on at least three continents; the latter species appears to have a higher indicence of morphological variability than the other extant darwinulids. The species-groups in the latter two genera are here used for convenience; no taxonomic value should at present be attached to them. Problems related to clonal taxonomy in general are briefly discussed. It is demonstrated that a systematic revision of an ancient asexual lineage can lead to a taxonomy which at the same time reflects natural phylogeny and is workable, i.e. is based on recognisable taxa

Prelabour Caesarean Section following IVF/ICSI in Older-Term Nulliparous Women: Too Precious to Push?

Objective. To compare prelabour caesarean section (CS) rates in older nulliparous women with a term singleton baby in cephalic presentation conceiving spontaneously and through IVF/ICSI. When the latter women would ask for CS, how willing are gynaecologists to comply with that request? Methods. A population-based retrospective (1995–2009) cohort study, conducted in Northern Belgium. A comparison of 1,866 nulliparous women pregnant after IVF/ICSI and 15,228 controls is made. An anonymous postal questionnaire is sent to all Belgian gynaecologists. Result. Both groups are comparable with respect to maternal age, gestational age, and birth weight. Prelabour CS is more often performed in women who conceived through IVF/ICSI compared to those who conceived spontaneously (9.2% versus 6.3%, P < 0.001). One in five gynaecologists agrees with the maternal request. Conclusion. IVF/ICSI pregnancies in older nulliparous women more often end in a prelabour CS and a substantial number of gynaecologists go along with a nonmedical reason for CS

Spin-Orbit Coupling Fluctuations as a Mechanism of Spin Decoherence

We discuss a general framework to address spin decoherence resulting from fluctuations in a spin Hamiltonian. We performed a systematic study on spin decoherence in the compound K$_6$[V$_{15}$As$_6$O$_{42}$(D$_2$O)] $\cdot$ 8D$_2$O, using high-field Electron Spin Resonance (ESR). By analyzing the anisotropy of resonance linewidths as a function of orientation, temperature and field, we find that the spin-orbit term is a major decoherence source. The demonstrated mechanism can alter the lifetime of any spin qubit and we discuss how to mitigate it by sample design and field orientation.Comment: submitte

Hydrodynamically enforced entropic trapping of Brownian particles

We study the transport of Brownian particles through a corrugated channel caused by a force field containing curl-free (scalar potential) and divergence-free (vector potential) parts. We develop a generalized Fick-Jacobs approach leading to an effective one-dimensional description involving the potential of mean force. As an application, the interplay of a pressure-driven flow and an oppositely oriented constant bias is considered. We show that for certain parameters, the particle diffusion is significantly suppressed via the property of hyrodynamically enforced entropic particle trapping.Comment: 5 pages, 4 figures, in press with Physical Review Letter

Giant enhancement of hydrodynamically enforced entropic trapping in thin channels

Using our generalized Fick-Jacobs approach [Martens et al., PRL 110, 010601 (2013); Martens et al., Eur. Phys. J. Spec. Topics 222, 2453-2463 (2013)] and extensive Brownian dynamics simulations, we study particle transport through three-dimensional periodic channels of different height. Directed motion is caused by the interplay of constant bias acting along the channel axis and a pressure-driven flow. The tremendous change of the flow profile shape in channel direction with the channel height is reflected in a crucial dependence of the mean particle velocity and the effective diffusion coefficient on the channel height. In particular, we observe a giant suppression of the effective diffusivity in thin channels; four orders of magnitude compared to the bulk value.Comment: 16 pages, 8 figure

Nueva especie de Metapyroppia Woolley, 1969 (Acari, Oribatida, Peloppiidae) del Nepal

A new species of oribatid mites of the family Peloppiidae, Metapyroppia gigantea n. sp., is described from Nepal. The genus Metapyroppia is recorded for the first time from the Oriental region. Metapyroppia gigantea n. sp. differs from the type species, Metapyroppia doratosa Woolley, 1969, by the absence of notogastral setae c2 and c3, presence of pointed rostrum and the adanal lyrifissures distanced from the anal plates. The morphology of gnathosoma and legs are presented in detail for the first time for any member of this genus. urn:lsid:zoobank.org:pub:EEE741F4-4C86-4625-B3FD-48E1DDA1D2D3Se describe una nueva especie de ácaro oribátido de la familia Peloppiidae, Metapyroppia gigantea n. sp., procedente de Nepal. Es la primera cita del género Metapyroppia en la región Oriental. Metapyroppia gigantea n. sp. se diferencia de la especie tipo, Metapyroppia doratosa Woolley, 1969, por la ausencia de las setas notogastrales c2 y c3, la presencia de un rostro puntiagudo y las lirifisuras adanales separadas de las placas anales. Por vez primera se describe detalladamente la morfología del gnathosoma y las patas en un miembro de este género. urn:lsid:zoobank.org:pub:EEE741F4-4C86-4625-B3FD-48E1DDA1D2D