Organic-rich lacustrine shales are widely developed in China, and they have long been simply regarded as homogeneous source rocks, which restricts the understanding of intrasource oil accumulation. At present, study LXF (Lower Member Xingouzui Formation) Jianghan Basin an unconventional reservoir is still its infancy, hydrocarbon accumulation mechanism unclear. Geochemical mineralogical studies...

optimization of reservoir parameters is an important issue in petroleum exploration and production. the ant colony optimization(aco) is a recent approach to solve discrete and continuous optimization problems. in this paper, the ant colony optimization is usedas an intelligent tool to estimate reservoir rock properties. the methodology is illustrated by using a case study on shear wave velocity...

There is often over 50% carbon loss during the thermal conversion of biomass into biochar, leading to it controversy for the biochar formation as a carbon sequestration strategy. Sometimes the biochar also seems not to be stable enough due to physical, chemical, and biological reactions in soils. In this study, three phosphorus-bearing materials, H3PO4, phosphate rock tailing (PRT), and triple ...

The UN Sustainable Development Goals highlight the myriad of socio-economic and environmental challenges occurring as a result anthropogenic chemical pollution. Urban sediments from informal settlements (slums) on Nairobi, Ngong Mathare Rivers (n = 25), were evaluated for sediment quality. Microtox bioassay identified 8 sites toxic, 9 moderately toxic non-toxic. Slum characterised by high total...

Abstract The aim of this study is to provide a better understanding the type source input, quality, quantity, condition depositional environment and thermal maturity organic matter from Bukit Song, Sarawak, which has not been extensively studied for hydrocarbon generation potential. Petrological geochemical analyses were performed on 13 outcrop samples location. Two samples, having III mixed ke...

In this paper we describe the LG-Eval toolkit for creating online language evaluation experiments. LG-Eval is the direct result of our work setting up and carrying out the human evaluation experiments in several of the Generation Challenges shared tasks. It provides tools for creating experiments with different kinds of rating tools, allocating items to evaluators, and collecting the evaluation...

It is often necessary to associate weights or other values with the edges of a graph. Such a “weighted” or “edge-labeled” graph can be defined as a triple G = (E, V, w) where w : E → eVal is a function mapping edges or directed edges to their values, and eVal is the set (type) of possible values. For a weighted graph eVal would typically be the real numbers, but for edge-labeled graphs they cou...