VERTICAL DIFFERENTIATION OF THE EARLY NON-WESTERN SOCIETIES: A FACTOR OF RESOURCE AVAILABILITY


New insights into androgen treatment of erectile dysfunction

Erectile response in mammals is centrally and peripherally regulated by androgens.Severe hypogonadism in men usually results in loss of libido and potency which can be restored by androgen administration.The original insights into Crop Tee the mechanisms of action of androgens on sexual function indicated that androgens particularly exert effects o

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Covariance among independent variables determines the overfitting and underfitting in variation partitioning methods: with a focus on the mixed co-variation

The effectiveness and validity of applying variation partitioning methods in community ecology has been questioned.Here, using mathematical deduction and numerical simulation, we made an attempt to uncover the underlying mechanisms determining the effectiveness of variation partitioning techniques.The covariance among independent variables determin

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