We propose a method that allows probing quantitatively the individual saturations of crudeoil/brine/mud-filtrate mixtures during imbibition-drainage experiments on a petroleum rock-system. The experiments have been also performed at different temperature and pressure conditions.

The fracture-controlled matrix unit is commonly found in low-permeability fractured reservoirs. Due to the permeability difference between fracture system and system, a large amount of oil will remain during traditional water injection development, thus limiting reservoir productivity. However, special imbibition mode provides breakthrough for secondary recovery. In this paper, based on model s...

We address in this report the problem of representing formally textual data. First, this problem is replaced in the context of automatic text processing. Then, the weaknesses of the basic document representation, i.e. the bag-of-words representation, are explained and some state-ofthe-art methods claiming to overcome these weaknesses are reviewed. Moreover we propose a novel graphical model, th...

We consider the problem of specifying combinations of data structures with complex sharing in a manner that is both declarative and results in provably correct code. In our approach, abstract data types are specified using relational algebra and functional dependencies. We describe a language of decompositions that permit the user to specify different concrete representations for relations, and...

drought resistance is a very important characteristic needed for plant survival especially at germination stage, in arid and semi-arid lands. phosphatase enzymes are widely found in plants. these enzymes are responsible for dephosphorylation of organic phosphate and altering it to mineral phosphate. germination experiments were conducted in two bread wheat cultivars (sardari and alvand) under s...

In contrast with higher-level programming languages, C does not provide strong abstractions for representing data. Indeed, while languages like Racket has a rich notion of data type—integers, floats, strings, tuples, lists, etc.—C has a low-level perspective on (primitive) data: a datum is either an integer or float of some finite size. While inconvenient at times, this perspective allows C pro...

In contrast with higher-level programming languages, C does not provide strong abstractions for representing data. Indeed, while languages like Racket has a rich notion of data type—integers, floats, strings, tuples, lists, etc.—C has a low-level perspective on (primitive) data: a datum is either an integer or float of some finite size. While inconvenient at times, this perspective allows C pro...