Mapping and monitoring of forest carbon stocks across large areas in the tropics will necessarily rely on remote sensing approaches, which in turn depend on field estimates of biomass for calibration and validation purposes. Here, we used field plot data collected in a tropical moist forest in the central Amazon to gain a better understanding of the uncertainty associated with plot-level biomas...

We have synthesized and tested a new binolaldehyde compound 1, against five diamine compounds. Using H NMR (400 MHz) spectroscopy, stable diasteriomeric imine complexes between 1 and five diamines were formed. Chemical shift nonequivalences (up to 0.058 ppm) were obtained for imines. Linear calibration plot was obtained for determining the enantiopurity of diamines.

BACKGROUND Accurately predicting the probability of a live birth after in vitro fertilisation (IVF) is important for patients, healthcare providers and policy makers. Two prediction models (Templeton and IVFpredict) have been previously developed from UK data and are widely used internationally. The more recent of these, IVFpredict, was shown to have greater predictive power in the development ...

A machine vision system utilizing color vision was investigated as a means to identify citrus fruits and to estimate yield information of the citrus grove in real-time. Images were acquired for 98 citrus trees in a commercial grove located near Orlando, Florida. The trees were distributed over 48 plots evenly. Images were taken in stationary mode using a machine vision system consisting of a co...

Prognostic models applied in medicine must be validated on independent samples, before their use can be recommended. The assessment of calibration, i.e., the model's ability to provide reliable predictions, is crucial in external validation studies. Besides having several shortcomings, statistical techniques such as the computation of the standardized mortality ratio (SMR) and its confidence in...

In the process of modeling height–diameter models for Mongolian pine (Pinus sylvestris var. mongolica), fitting abilities six were compared: (1) a basic model with only diameter at breast height (D) as predictor (BM); (2) plot-level mixed-effects (BMM); (3) quantile regression nine quantiles based on BM (BQR); (4) generalized stand or competition covariates (GM); (5) (GMM); and (6) GM (GQR). Th...

OBJECTIVE Diagnosis of community-acquired pneumonia (CAP) in the elderly is often delayed because of atypical presentation and non-specific symptoms, such as appetite loss, falls and disturbance in consciousness. The aim of this study was to investigate the external validity of existing prediction models and the added value of the non-specific symptoms for the diagnosis of CAP in elderly patien...

A method for calibrating the momentum scale in a particle physics detector is described. The relies on determination of masses final state particles two-body decays neutral particles, which can then be used to obtain corrections scale. modified version Armenteros-Podolanski plot and $K_S^0 \to \pi^+ \pi^-$ decay as proof principle this method.

A high sensitive electrochemical nanostructure sensor based on graphene oxide/Fe3O4@SiO2 nanocomposite modified graphite screen printed electrode (GO/Fe3O4@SiO2/SPE) has been developed for trace analysis of acetaminophen. The electrochemical study of the modified electrode, as well as its efficiency for simultaneous voltammetric oxidation of acetaminophen and tryptophan is described. Compared w...