The primary objective of the present paper is to link some relevant concepts on the use of ecological agricultural practices to the production of food crops. In a special topic the Trofobiose Theory, as well as the principle of Active Dissolution of Rocks are considered as important tools in improving the sustainability of Organic, Biodynamic and Process Agricultures.

We propose that category membership can operate as a collective market signal for quality when low-quality producers face higher costs of gaining membership. The strength of membership as a collective signal increases with the sharpness of the category boundary, or contrast. Our empirical study focuses on biodynamic and organic viticulture in

a Biodynamic Optical Imaging Center (BIOPIC), and College of Engineering, Peking University, Beijing 100871, China b Med-X Research Institutes, Shanghai Jiaotong University, Shanghai 200030, China. E-mail: [email protected] c Beijing National Laboratory for Molecular Sciences and the Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engi...

In this paper, a three-dimensional (3-D) nonlinear finite element (FE) method is used in association with the Articulated Total Body (ATB) biodynamics method, to study the human brain response under dynamic loading. The FE formulation includes the detailed model of the skull, brain, cerebral-spinal fluid (CSF), dura mater, pia mater, falx and tentorium membranes. The brain is modeled as viscoel...

In this study, the effect of posture, vibration magnitude and frequency on seat-to-head (STH) and back support-tohead (BTH) transfer functions has been studied under vertical sinusoidal vibration. Twelve healthy male subjects were participated in experimental work to measure vertical vibration transmitted to the occupants head in three representative postures (erect, vertical back on and forwar...