We develop a simple correspondence between hydrophobic surface topology of globular proteins and and an effective protein-protein adhesiveness parameter of the Baxter type. We discuss within this framework analytical interpretation of the structure factor governing static light scattering. Typeset using REVTEX 1 Hydrophobic amino-acid residues exposed at the surface of globular proteins are abl...

The inward Na+ current underlying the action potential in nerve is terminated by inactivation. The preceding report shows that deletions within the intracellular linker between domains III and IV remove inactivation, but mutation of conserved basic and paired acidic amino acids has little effect. Here we show that substitution of glutamine for three clustered hydrophobic amino acids, Ile-1488, ...

the present study has been conducted to determine the surface water quality of urban area in savar, dhaka, bangladesh by determining some water quality parameters (transparency, temperature, ph, ec, eh, do, tss, tds, ts, bod5, cod, toc, cl-, br-, so4-2, no3-, no2-, po4-3, tp, hco3- and total alkalinity) as well as the status of phytoplankton’s community in the water from two lakes (tiger lake a...

the objective of this work was to develop and evaluate the levofloxacin hemihydrate floating formulations (f1-f9). selection of optimized batch was done by model dependent approach and novel mathematical approach. f1-f9 batches were prepared by direct compression method using gelucire 43/01 (hydrophobic) and hydroxypropylmethylcellulose (hydrophilic) polymer in different ratios. the floating ta...

Statistical analyses were undertaken for putative transmembrane K-helices obtained from a database representing the subset of membrane proteins available in Swiss-Prot. The average length of a transmembrane K-helix was found to be 22^21 amino acids with a large variation around the mean. The transfer free energy from water to oil of a transmembrane K-helix in bitopic proteins, 348 kcal/mol, is ...

the writers of this research have studied seven variables including: precipitation, relative humidity, sunny hours, temperature average, temperature minimum, temperature maximum and sea level pressure, at sanandaj air station during 1964-1994. sanandaj air station has nearly 10966 days of complete data for these variables. a principal component analysis (pca) has been applied on this data; then...

abstract natural disasters threatening and endangering human communities has resulted in the study and research of such disasters through the related sciences and present methods of forecasting their behavior with time and place and also from a qualification and quantity viewpoint. to this end, numerous methods for the determination of the maximum flood in various return period has been made av...

The hydrophobic interaction, the tendency for nonpolar molecules to aggregate in solution, is a major driving force in biology. In a direct approach to the physical basis of the hydrophobic effect, nanosecond molecular dynamics simulations were performed on increasing numbers of hydrocarbon solute molecules in water-filled boxes of different sizes. The intermittent formation of solute clusters ...

in this paper an application of the cluster analysis technique in educational planning is demonstrated by means of a developed computer software with some characteristics of an expert system. the main idea is based on the knowledge-based systems which have been applied in group technology. the software is applied to weekly schedules of the courses and professors of the industrial engineering de...

this paper aimed to identify and explain ethical components of agri-business based on perception cluster analysis of agri-business’ managers and owners. mixed method approach was employed. target population contains all the entrepreneurs, owners and mangers of agri-business in golestan province. in first phase, using qualitative semi-structured interview, the respondents’ perception about ethic...