The Iowa soil-test interpretations and fertilizer recommendations for phosphorus (P) and potassium (K) were last updated in 1996 and 1999. The 1996 update involved the most important changes compared with previous recommendations. New soil-test P and K interpretation classes (very low, low, optimum, high, and very high) were developed to classify soil-test values into two sets corresponding to ...

The purpose of this paper is to propose a new clustering algorithm, which combines membrane computing with a modified chameleon algorithm. The new algorithm is called as P-chameleon algorithm, which can obtain the knearest graphs, complete the partition of graph, aggregate subgraphs through communication rules and rewriting rules with the help of active promoters and inhibitors. The whole proce...

Following an idea of B. H. Gross, who presented an elliptic curve test for Mersenne primes Mp = 2 p − 1, we propose a similar test with elliptic curves for generalized Thabit primes K(h, n) := h · 2 − 1 for any positive odd number h and any integer n > log2(h) + 2.

Background The contribution of discordant partnerships to the burden of HIV/AIDS is significant. An understanding of the characteristics of HIV-affected couples will help modify preventive strategies. The aim of this study was to compare the HIV discordant and concordant partnerships for sociodemographic determinants in comprehensive health centers in Anambra State, Nigeria. Methods This was ...

OBJECTIVE The present study aims to analyze perinatal outcomes in twins given special care during pregnancy and labor and to compare fetal and neonatal outcomes in dichorionic twins with monochorionic twins. STUDY DESIGN Eighty eight (88) twin pregnancies booked for care at a tertiary care Fetal Medicine centre were included in this study. The maternal demographic variables, course of pregnan...

A statistically significant research finding should not be defined as a P-value of 0.05 or less, because this definition does not take into account study power. Statistical significance was originally defined by Fisher RA as a P-value of 0.05 or less. According to Fisher, any finding that is likely to occur by random variation no more than 1 in 20 times is considered significant. Neyman J and P...