Abstract The Early Jurassic was marked by several episodes of rapid climate changes and environmental perturbation. These culminated during the Toarcian Oceanic Anoxic Event (T-OAE), an episode global warming that led to widespread deposition organic-rich shales. shales NW Europe have also yielded exceptionally preserved fossils marine vertebrates invertebrates, but potential links between occu...

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...

Marine sediments near continental margins contain sedimentary organic matter (SOM) which is subject to the metabolic activity of micro-organisms during early diagenesis resulting in production biogenic methane. This process occurs at microscopic scale and anaerobic conditions. Here, we apply a new numerical approach simulate methane offshore Aquitaine (Bay Biscay) where gas seeps have been rece...

.................................................................................................................................. vi CHAPTER 1. GENERAL INTRODUCTION ............................................................................... 1 References ....................................................................................................................... 7 CHAPTER 2. COMPA...

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...