A computer-aided multivariate water quality index is developed based on partial least squares (PLS) regression. The index is termed as the partial least squares water quality index (PLS-WQI). Briefly, a training set was computationally generated based on the guideline of National Water Quality Standards for Malaysia (NWQS) to predict the water quality. The index is benchmarked with the well-est...

In this paper, we introduce a novel approach to estimate the illumination and reflectance of an image. The approach is based on illumination-reflectance model and wavelet theory. We use a homomorphic wavelet filter (HWF) and define a wavelet quotient image (WQI) model based on dyadic wavelet transform. The illumination and reflectance components are estimated by using HWF and WQI, respectively....

The aims of this study were to assess and analysis of drinking water quality of Chabahar villages in Sistan and Baluchistan province by water quality index (WQI) and to investigate the water stability in subjected area. The results illustrated that the average values of LSI, RSI, PSI, LS, and AI was 0.5 (±0.34), 6.76 (±0.6), 6.50 (±0.99), 2.71 (±1.59), and 12.63 (±0.34), respectively. The calcu...

The Bumbu River Watershed is an essential source for the drinking and sanitation needs of settlement communities within Lae, Papua New Guinea. However, poor waste management practices have led to concerns over safety integrity watershed’s resources. In this study, we explored effect these factors on water quality in river its tributaries using (22 sampling stations), geospatial (degree urbanisa...

Recent ecological stream restoration projects have focused on expanding the water-friendly space of streams, promoting health aquatic ecosystems, and restoring various habitats, which raise need for relevant research. Applying integrated environmental analysis, this study quantifies change in hydraulic characteristics before after through physical habitat simulation links results impacts to est...

Abstract River is one of the surface water resources used to meet people’s need for daily clean water. Along with population growth, problems related waste produced are also increasing and causing environmental pollution, including river pollution. sustainability issues that has attracted attention various institutions, which Citarum sources raw people in West Java. In this study, analysis cond...

Cytochrome c maturation in the periplasms of many bacteria requires the heme chaperone CcmE, which binds heme covalently both in vivo and in vitro via a histidine residue before transferring the heme to apocytochromes c. To investigate the mechanism and specificity of heme attachment to CcmE, we have mutated the conserved histidine 130 of a soluble C-terminally His-tagged version of CcmE (CcmEs...

Chapter 1 Reaction of W(CCMe 3)Cl 3(dme) with one equivalent of (3,5-Me 2C6H3NCH 2CH 2)3N)Li3 affords yellow, crystalline W(CCMe 3)(N3N) in good yield. The reactivity of this new alkylidyne complex towards terminal alkynes was investigated. Two other new tungsten alkylidynes, W(CCMe 3)(pyr) 3 (pyr = 2,5-dimethylpyrrolide) and W(CCMe3)(Ph 2N)3 were prepared by the addition of three equivalents o...