Traité de la structure du coeur, de son action et de ses maladies /

Mode of access: Internet.

Traité de l'existance, de la nature et des propriétés du fluide des nerfs et principalement de son action dans le mouvement musculaire : ouvrage couronné en 1753 par l'Académie de Berlin : suivi des dissertations sur la sensibilité des meninges, des tendons, etc., l'insensibilité du cerveau, la structure des nerfs, l'irritabilité Hallérienne, etc. /

Mode of access: Internet.

Rational methods of curing fevers : deduced from the structure and oeconomy of human bodies ... /

Mode of access: Internet.

Exposition anatomique de la structure du corps humain /

Contiene con portada y paginación propia : Tome premier 502 [2] p. - Tome second XXIII [1] p. bl. 632 [4] p. - Tome troisieme XI [1] p. bl. 426 [2] p. bl., 24, [3] p.

Exposition anatomique de la structure du corps humain /

Mode of access: Internet.

Exposition anatomique de la structure du corps humain /

Mode of access: Internet.

Exposition anatomique de la structure du corps humain /

Mode of access: Internet.

Exposition anatomique de la structure du corps humain /

Mode of access: Internet.

Observations sur l'art des accouchemens, nouvelle découverte par laquelle on peut prévenir tous les funestes accidens qui arrivent aux femmes qui meurent en couche : le tout fondé sur les principes d e la méchanique, conforme à la structure des parties & confirmé par l'expérience /

Mode of access: Internet.

Traité de l'organe de l'ouie : contenant la structure, les usages & les maladies de toutes les parties de l'oreille /

Mode of access: Internet.

Nouveau traité des maladies des yeux, les remedes qui y conviennent & les operations de chirurgie que leurs guérisons éxigent. Avec de nouvelles decouvertes sur la structure de l'oeil qui prouvent l'organe immédiat de la vûë /

Mode of access: Internet.

Genetic assignment methods for the direct, real-time estimation of migration rate: a simulation-based exploration of accuracy and power

Genetic assignment methods use genotype likelihoods to draw inference about where individuals were or were not born, potentially allowing direct, real-time estimates of dispersal. We used simulated data sets to test the power and accuracy of Monte Carlo resampling methods in generating statistical thresholds for identifying F-0 immigrants in populations with ongoing gene flow, and hence for providing direct, real-time estimates of migration rates. The identification of accurate critical values required that resampling methods preserved the linkage disequilibrium deriving from recent generations of immigrants and reflected the sampling variance present in the data set being analysed. A novel Monte Carlo resampling method taking into account these aspects was proposed and its efficiency was evaluated. Power and error were relatively insensitive to the frequency assumed for missing alleles. Power to identify F-0 immigrants was improved by using large sample size (up to about 50 individuals) and by sampling all populations from which migrants may have originated. A combination of plotting genotype likelihoods and calculating mean genotype likelihood ratios (D-LR) appeared to be an effective way to predict whether F-0 immigrants could be identified for a particular pair of populations using a given set of markers.

Optimal sampling strategy for estimation of spatial genetic structure in tree populations

Fine-scale spatial genetic structure (SGS) in natural tree populations is largely a result of restricted pollen and seed dispersal. Understanding the link between limitations to dispersal in gene vectors and SGS is of key interest to biologists and the availability of highly variable molecular markers has facilitated fine-scale analysis of populations. However, estimation of SGS may depend strongly on the type of genetic marker and sampling strategy (of both loci and individuals). To explore sampling limits, we created a model population with simulated distributions of dominant and codominant alleles, resulting from natural regeneration with restricted gene flow. SGS estimates from subsamples (simulating collection and analysis with amplified fragment length polymorphism (AFLP) and microsatellite markers) were correlated with the 'real' estimate (from the full model population). For both marker types, sampling ranges were evident, with lower limits below which estimation was poorly correlated and upper limits above which sampling became inefficient. Lower limits (correlation of 0.9) were 100 individuals, 10 loci for microsatellites and 150 individuals, 100 loci for AFLPs. Upper limits were 200 individuals, five loci for microsatellites and 200 individuals, 100 loci for AFLPs. The limits indicated by simulation were compared with data sets from real species. Instances where sampling effort had been either insufficient or inefficient were identified. The model results should form practical boundaries for studies aiming to detect SGS. However, greater sample sizes will be required in cases where SGS is weaker than for our simulated population, for example, in species with effective pollen/seed dispersal mechanisms.

A wideband array antenna with beam-steering capability using real valued weights

This article presents an array antenna with beam-steering capability in azimuth over a wide frequency band using real-valued weighting coefficients that can be realized in practice by amplifiers or attenuators. The described beamforming scheme relies on a 2D (instead of 1D) array structure in order to make sure that there are enough degrees of freedom to realize a given radiation pattern in both the angular and frequency domains. In the presented approach, weights are determined using an inverse discrete Fourier transform (IDFT) technique by neglecting the mutual coupling between array elements. Because of the presence of mutual coupling, the actual array produces a radiation pattern with increased side-lobe levels. In order to counter this effect, the design aims to realize the initial radiation pattern with a lower side-lobe level. This strategy is demonstrated in the design example of 4 X 4 element array. (C) 2005 Wiley Periodicals. Inc.