Background The plastics derived from petrochemicals have many applications. However, public concern and environmental laws led to conservation policies and establish programs that stimulate the research and use of new products based on renewable resources. Polyhydroxyalkanoates (PHAs) are biopolymers synthesized by microorganisms under conditions of nutrient stress with similar properties to co...

INTRODUCTION The primary limitations of conventional weed control programs include a heavy reliance on capital intensive, toxic, and non-renewable resources (pesticides and petrochemicals) to manage weed competition. Weed emergence from the soil top layers is facilitated by the continuous disturbance created through cultivation, irrigation, pesticide applications, machinery, and other cultural ...

Plastics are a ubiquitous part of modern life. They can be modified to meet the demands of almost any conceivable application1. While plastic is extremely useful and has been very important in the development of society since the beginning of the 20th century, it also presents a problem. It is estimated that 25 Mt of plastic waste was generated in the European Union in 2008. As much as 49 % of ...

The good thing about fossil fuels is that they are very energy dense, i.e., they contain a lot of energy per unit of volume. This means that fossil fuels are very good at powering cars and generating heat. The not-so-good thing about fossil fuels is that the earth has a limited amount of them. Because fossil fuels take millions of years to form, we will eventually use them up before more are ma...

Although the organizational capability for agility in IT deployment is crucial to the attainment of enterprise agility, there is scant research on how the capability may be nurtured and leveraged to this end. As improvisation may be an important mechanism for attaining agility in IT deployment, we apply the literature on organizational improvisation to analyze the case of Chang Chun Petrochemic...

Density is one of the most prevalent physical property used to classify and characterise fluids, not only in the environmental, cosmetics, pharmaceuticals, and food and beverage industries, but also in hydrocarbon processing industry (HPI). Petroleum products are everywhere in today’s life, and have become almost natural parts of the modern world. Numerous products used on a daily basis are der...

Occupational Health Program and Exposure, Epidemiology, and Risk Program, Department of Environmental Health, Department of Biostatistics, and Department of Epidemiology, Harvard School of Public Health; Pulmonary and Critical Care Unit, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts; Department of Geography, National Changhua University of...

Occupational Health Program and Exposure, Epidemiology, and Risk Program, Department of Environmental Health, Department of Biostatistics, and Department of Epidemiology, Harvard School of Public Health; Pulmonary and Critical Care Unit, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts; Department of Geography, National Changhua University of...

Improper and unnecessary maintenance actions can result in a waste of resources, time, and money. Training and education play an important role in the successful implementation of a maintenance strategy. The Center for Predictive Maintenance (CPM) at the University of South Carolina has developed a demonstration methodology and tool that can be used to educate and train users extending from mai...

The purpose of this research is to examine the influence accounting information systems, effectiveness internal control, asymmetry and individual morality on fraud in . population study were employees PT. Petrokimia Gresik sampling technique used saturated with a total sample 100 Petrochemicals. Data was collected by giving questionnaires respondents departments related systems. data analysis P...