Model Calculations for the Two-Fragment Electro-Disintegration of 4^4He

Differential cross sections for the electro-disintegration process $e + {^4He} \longrightarrow {^3H}+ p + e'$ are calculated, using a model in which the final state interaction is included by means of a nucleon-nucleus (3+1) potential constructed via Marchenko inversion. The required bound-state wave functions are calculated within the integrodifferential equation approach (IDEA). In our model the important condition that the initial bound state and the final scattering state are orthogonal is fulfilled. The sensitivity of the cross section to the input $p{^3H}$ interaction in certain kinematical regions is investigated. The approach adopted could be useful in reactions involving few cluster systems where effective interactions are not well known and exact methods are presently unavailable. Although, our Plane-Wave Impulse Approximation results exhibit, similarly to other calculations, a dip in the five-fold differential cross-section around a missing momentum of $\sim 450 MeV/c$, it is argued that this is an artifact of the omission of re-scattering four-nucleon processes.Comment: 16 pages, 6 figures, accepted for publication by Phys.Rev.

Changes structural indicators of the skin and effects biorevitalization

Objective: То study how biorevitalisation can influence on the skin quality. It was used preparation which consist of hyaluronic acid and also trehalose. There are 20 patients who took part in this research: women, whose average age was 52 ± 7,54 years. Once were injected skin of the face, neck and skin behind the right ear. Before and after 1,5 months was taken skin biopsy behind the right ear by punch-biopsy. Was researched: the thickness of epidermis, the thickness of (сосочкового и сетчатого) layers of the dermis, the diameter of the (клубочков) and outlet ducts of the sweat glands, the identification number of the total and mature collagen, collagen types I and III, the young collagen, number of the elastin.Цель: исследование влияния биоревитализации на состояние кожного покрова. Использован препарат, в состав которого входят гиалуроновая кислота и трегалоза. В исследовании принимали участие 20 женщин, средний возраст - 52+7,54 года. Воздействию препаратом подвергалась кожа лица, шеи и заушной области справа. До процедуры и через 1,5 месяца после производилась биопсия кожи в заушной области методом рипсЬ-биопсии. В биопсийном материале исследовались: толщина эпидермиса, сосочкового и сетчатого слоев дермы, диаметр клубочков и выводных протоков потовых желез, объемная плотность общего, молодого и зрелого коллагенов, коллагенов I и III типов, эластина. Обнаружено, что процедура биоревитализации выбранным препаратом оказывала на кожу благоприятное воздействие. Наблюдалось увеличение толщины эпидермиса, уплотнение дермы, увеличение процентного содержания зрелого коллагена, коллагенов I и III типов, молодого коллагена, процентного содержания эластина

The re-identification risk of Canadians from longitudinal demographics

<p>Abstract</p> <p>Background</p> <p>The public is less willing to allow their personal health information to be disclosed for research purposes if they do not trust researchers and how researchers manage their data. However, the public is more comfortable with their data being used for research if the risk of re-identification is low. There are few studies on the risk of re-identification of Canadians from their basic demographics, and no studies on their risk from their longitudinal data. Our objective was to estimate the risk of re-identification from the basic cross-sectional and longitudinal demographics of Canadians.</p> <p>Methods</p> <p>Uniqueness is a common measure of re-identification risk. Demographic data on a 25% random sample of the population of Montreal were analyzed to estimate population uniqueness on postal code, date of birth, and gender as well as their generalizations, for periods ranging from 1 year to 11 years.</p> <p>Results</p> <p>Almost 98% of the population was unique on full postal code, date of birth and gender: these three variables are effectively a unique identifier for Montrealers. Uniqueness increased for longitudinal data. Considerable generalization was required to reach acceptably low uniqueness levels, especially for longitudinal data. Detailed guidelines and disclosure policies on how to ensure that the re-identification risk is low are provided.</p> <p>Conclusions</p> <p>A large percentage of Montreal residents are unique on basic demographics. For non-longitudinal data sets, the three character postal code, gender, and month/year of birth represent sufficiently low re-identification risk. Data custodians need to generalize their demographic information further for longitudinal data sets.</p