Petroleum-based plastics have become a big problem in many countries because of their non-degradability and that they microplastics the environment. This study focused on optimization production medium conditions polyhydroxyalkanoates (PHAs), which are biodegradable bioplastics accumulated microbial cells. Among 341 isolates from 40 composted soil samples, best isolate was HD34 strain, identifi...

We consider spacetimes N satisfying some structural conditions, which are still fairly general, and prove convergence results for the leaves of an inverse mean curvature flow. Moreover, we define a new spacetime N̂ by switching the light cone and using reflection to define a new time function, such that the two spacetimes N and N̂ can be pasted together to yield a smooth manifold having a metric ...

Despite the increasing importance of data and information quality, current research related to Big Data quality is still limited. It is particularly unknown how to apply previous data quality models to Big Data. In this paper we review Big Data quality research from several perspectives and apply a known quality model with its elements of conformance to specification and design in the context o...

the role of chlamydia pneumoniae in asthma has drawn much attention in recent years. in this study we assessed the prevalence of c. pneumoniae infections in patients with chronic stable and acute exacerbation of asthma and compared it with normal population. twenty adult patients with chronic stable asthma and 21 patients with acute exacerbations of asthma and 41 matched control subjects were s...

Let $f(t)$ be a smooth and periodic function of one real variable. Then the planar curves $t\mapsto \big(f'(t),f(t)\big)$ \big(f''(t)-f(t),f'(t)\big)$ both have non-negative rotation number around every point not on curve. These are two simplest cases beautiful Theorem by C. Loewner. This article is expository, we prove statements elementary means following work Bol [3]. After that, present Loe...

Big data systems help organizations store, manipulate, and derive value from vast amounts of data. Relational database and MapReduce are the two most prominent technologies for such systems. Organizations use them to perform complex analysis on diverse and unconventional data types with fast growing data volumes. As more big data systems are deployed, the industry faces the challenge to develop...

Over the last 20 years, and particularly with the advent of Big Data and analytics, the research area around Data and Information Quality (DIQ) is still a fast growing research area. There are many views and streams in DIQ research, generally aiming at improving the effectiveness of decision making in organizations. Although there are a lot of researches aimed at clarifying the role of BIG data...