Two unique approaches were proposed to strengthen the bond between glass fiber reinforcement polymer (GFRP) and RC concrete surfaces. The two bonding materials are epoxy (EP) geopolymer (GPP) with different ratios of short fibers (SGF). experimental program includes seven reinforced (RC) beams that have same cross-section (150 mm × 200 mm) 1500 in length. first beam is control (B0-Control). nex...

Mapping of terrestrial chlorophyll fluorescence from space has shown potential for providing global measurements related to gross primary productivity (GPP). In particular, space-based fluorescence may provide information on the length of the carbon uptake period. Here, we show an example of the ability of global satellite fluorescence retrievals to track seasonal cycle of photosynthesis as est...

Degradation of guanosine tetraphosphate (ppGpp) involves an enzyme associated with the ribosomal fraction from spoT+ strains of Escherichia coli. Double-label experiments with pp[3h]gpp, pp[3H]Gpp, or pp[3H]Gpp as substrate strongly suggest that ppG is the degradation product and that the enzyme releases two phosphates coordinately from the 3' position of ppGpp. In the absence of pppA this reac...

Finding global optimum of a non-convex quadratic function is in general a very difficult task even when the feasible set is a polyhedron. We show that when the feasible set of a quadratic problem consists of orthogonal matrices from Rn×k, then we can transform it into a semidefinite program in matrices of order kn which has the same optimal value. This opens new possibilities to get good lower ...

Psoriasis is an autoimmune disease triggered by different conditions in genetically susceptible people. It is characterized by variable cutaneous manifestations including localized or disseminated pustules. Generalized pustular psoriasis (GPP) has two main clinical forms: von Zumbusch psoriasis, characterized by severe erythrodermia and scaling skin after the resolution of pustules, and the ann...

Genetic Parallel Programming (GPP) is a novel Genetic Programming paradigm. GPP Logic Circuit Synthesizer (GPPLCS) is a combinational logic circuit learning system based on GPP. The GPPLCS comprises a MultiLogic-Unit Processor (MLP) which is a hardware processor built on a Field Programmable Gate Array (FPGA). The MLP is designed to speed up the evaluation of genetic parallel programs that repr...

Despite the fact that the occurrence of polycyclic aromatic hydrocarbons (PAHs) in the atmospheric environment has been studied for decades the photochemistry, deposition and, consequently, the long-range transport potential (LRTP) are not well understood. The reason is gas-particle partitioning (GPP) in the aerosol, its sensitivity to temperature and particulate phase composition, and sampling...

Using Scots pine (Pinus sylvestris L.) in Fenno-Scandia as a case study, we investigate whether net primary production (NPP) and maintenance respiration are constant fractions of gross primary production (GPP) as even-aged mono-specific stands progress from initiation to old age. A model of the ratio of NPP to GPP is developed based on (1) the classical model of respiration, which divides total...

Metabolically stable GTP analogues were 10 to 40 times more potent activators of DL-isoproterenol-stimulated adenylate cyclase (EC 4.6.1.1) from pigeon erythrocyte membranes that GTP. The order of effectiveness was guanosine-5'-O-(3-thiotriphosphate) (GTP gamma S) greater than guanylyl imidodiphosphate (Gpp(NH)p) greater than guanylyl methylenediphosphonate (Gpp(CH2)p greater than GTP. In contr...

This paper presents a steady state kinetic model for hepatic adenylate cyclase. The activity of the enzyme has been assayed in the presence of a range of concentrations of magnesium, adenylylimidodiphosphate (App(NH)p), 5’-guanylylimidodiphosphate (Gpp(NH)p), and in the presence and absence of saturating concentrations of glucagon. The data were tested against proposed models using an iterative...