In a previous study, selective degradation of carbohydrates versus lignin in buried woods was demonstrated by non-destructive spectroscopy (C NMR) and destructive wet chemical methods (acid hydrolysis and alkaline CuO oxidation). In this paper, spruce, alder and oak woods deposited in coastal sediments and their recent equivalents are characterized by pyrolysis-mass spectrometry and pyrolysis-g...

The Chang 7 member of the Upper Triassic Yanchang Formation in Ordos Basin is considered to hold main source rocks for conventional and unconventional oil gas. lamination or lithology alteration vertical lateral directions, even over a short distance, common feature lacustrine rocks. differences geochemical characteristics black shales, dark mudstones interbedded sandstones have been scarcely r...

Hydrocarbon potential evaluation is a high priority in oil/gas exploration which significantly influenced by methods and subjective cognition. With the aim of quantitatively establishing hydrocarbon generation expulsion (HGE) model source rocks, data-driven approach proposed based on abundant readily available Rock-Eval/total organic carbon content (TOC)/vitrinite reflectance (VRo) datasets. Th...

03/15/2012 Lecture 16: CS 880: Complexity of Counting Problems Instructor: Jin-Yi Cai Scribe: Chen Zeng For a symmetric, bipartite matrix A ∈ C, we want to prove the following theorem: Theorem 1. If EVAL(A) is not #P-hard, then there exists an m × m purified bipartite matrix A such that EVAL(A) ≡ EVAL(A). Recall the definition of the purified bipartite matrix : Definition 1. Let A ∈ C be a symm...

Memoization, such as that performed by bottom-up evaluation, helps detect loops, avoid repeated computation when subgoals are generated repeatedly, and in conjunction with a fair search strategy, ensures that evaluation is complete. Programs that generate non-ground facts (i.e., facts containing universally quantiied variables) and also need memoization are important in several contexts. Curren...

Take the ethylene-vinyl alcohol (EVAL) copolymer as the infrastructural material, the anion exchange resin D301R as the functional grains, adopt dry-wet method to make resin-filled EVAL hollow fiber membrane, test the pure water flux of the membrane, the rejection rate of the bovine serum albumin (BSA) and the static absorption performance of BSA. Check the influences of coagulation bath temper...

The paper reports on the recent forum RU-EVAL ‒ a new initiative for evaluation of Russian NLP resources, methods and toolkits. It started in 2010 with evaluation of morphological parsers, and the second event RU-EVAL 2012 (2011-2012) focused on syntactic parsing. Eight participating IT companies and academic institutions submitted their results for corpus parsing. We discuss the results of thi...

the paper introducedeffects of modified pyrolysis tar on flue gas desulfurization. this experiment selected the pyrolysis tar as the raw material, researched the effects on desulfurization performance under different modification solution, concentration, solid liquid ratio of pyrolysis tar and modified solution, calcination temperature and calcination time by 16 group orthogonal experiments. th...