The dynamics of ethanol production/consumption in baker's yeast were studied under feed- rate controlled conditions. The yeast was grown on molasses in an 8-l fed-batch reactor and experiments were done at cell concentrations between 5 and 65 g l−1. Small changes in the feed rate were made around a feed rate corresponding to the critical growth rate, at which the yeast cell metabolism switches bet

The problem of minimal inverses for linear time invariant multivariable systems is formulated and constructively solved in a state space setting. Unknown initial states as well as zero initial states are considered. The spectrum of the minimal inverse is shown to be unique and constructable from the original system without first calculating the whole inverse. This leads to a simple way of introduc

The problem of designing a linear feedback when all state variables are not available is discussed. The design scheme is based on computation of a complete state feedback and a reduction to a specified structure. The reduction is made by approximation of the eigenspace corresponding to a set of dominant eigenvalues. The method consists of successive choices of weightings on this space. The method

Spectral analysis as well as parametric identification techniques have been applied to data from boiling water reactor noise measurements to estimate the process dynamics. Three different parametric model structures were tried. Least squares and maximum likelihood methods were tried to estimate the parameters of the models. Low order models were obtained in most cases.The results show the difficul

It is often necessary in practice to perform identification experiments on systems operating in closed loop. There has been some confusion about the possibilities of successful identification in such cases, evidently due to the fact that certain common methods then fail. A rapidly increasing literature on the problem is briefly surveyed in this paper, and an overview of a particular approach is gi

This article discusses using media as a weapon between within the armed conflict in Yemen.

This article addresses the economic crisis in Yemen, and how its negative impact toward the civilians

This article deals with some Yemeni events that affect the policy, and the other social aspects. A Yemeni singer made a concert with Yemeni Israeli singer, however, this event caused a lot of reaction in the social media, the article attempts to discuss these reactions.

This article discusses the situation in Southern of Yemen, and how the political movement depends on the old politicians that they were part of past problem in the south.

Proteomics, the detailed understanding of the role that proteins play in health and disease, is a necessary complement to genetic analysis. Rapid progress within the proteomics field has opened up possibilities for direct intervention in the medical and clinical area where diseases, disease progression and cause of disease can be investigated at a molecular level. This review introduces the proteo

This chapter summarizes the proteomic tools and strategies used in asthma research. It provides a background to the remodeling process occurring in the lung—in diseases such as asthma and chronic obstructive pulmonary disease (COPD)—as well as a description of the status of the current proteomics techniques. It also describes strategies for the discovery of disease markers that can be used to moni

An approach for large scale protein identification and quantification was described. The peptide mixtures from the strong cation exchange (SCX) fractionated protein digests were separated and analyzed by HPLC MS/MS. The human fibrobalst nuclei were purified from stimulated and non-stimulated cells. The quantification results with MALDI and ESI LC/MS were shown to be identical within experimental e

Antimicrobial peptides (AMPs) are a diverse family of peptides that defend the mucosal surfaces of the oral cavity and other locations. Many AMPs have multiple functions and properties that influence aspects of innate defense and colonization by microorganisms. The human oral cavity is home to the second-most diverse microbiome, and the health of the mouth is influenced by the presence of these ba