Aqueous extracts of cotton and other vegetable dusts cause contraction of the isolated ileum and tracheal muscle of the guinea-pig, and of isolated human bronchial muscle. The levels of this contractor activity place the dusts of cotton, flax, and jute in the order of the probable incidence of byssinosis occurring in the mills spinning these fibres. Extracts of cotton dust possess a histamine-l...

Considerable amount of Oil and Gas (O&G) production and process installations operating in the North Sea are getting aged and requiring continuous modifications. Nature of such contractual jobs is relatively short term with demanding deliverables. Hence, the engineering contractors require excellent coordination and seamless communication during all phases of a project. For any contractor/suppl...

We examine the stock market reaction to 1227 inter-corporate ordinary business contract announcements reported by Dow Jones between January 1, 1990 and December 31, 2001. Around contract announcement dates, we find statistically significant positive average abnormal returns and abnormal trading volume for contractors, but insignificant positive abnormal returns and negative abnormal volume for ...

Cash shortage is one of the most dangerous problems that may appear while projects are in progress. Inadequate cash flows force the companies to take short term or long term loans and in some cases companies end up being bankruptcy. In this study the planned and actual cumulative percentages of cash flows and work progress which are represented using S-curves are used as the basis for analyzing...

Interval Newton methods are widely used to find reliable enclosures for the roots of the polynomial systems. But the computation process needs the evaluation of an enclosure for the derivative of the polynomial and evaluation of the polynomial at a particular point. Again, the subdivisions (if any are needed) will require repeated evaluation of the function values. We propose an alternative app...

Time, cost and quality have their proven importance as the prime measures for project success. However, the history of the construction industry worldwide is full of projects that were completed with significant time and cost overruns. This study is conducted to investigate the occurrence frequency of time overrun causes in road construction projects in the West Bank in Palestine from contracto...

In the construction process of the giant project, because of each participant’s asymmetric and incomplete information and their pursuit of maximum interests, etc., the risk of cost control exists in the process of management. This article focuses on the owners facing cost management risk in the construction process of GB. First, it analyzes the behavior of the each project participant, and then...

Preference for different conflict resolution styles is influenced by cultural background and power distance of two parties involving in conflict. This research put forward 7 hypotheses and tested the preference differences of the five conflict resolution styles between Chinese owner and contractor as well as the preference differences concerning the same style between two parties. The research ...

A 20-month pilot-scale study was conducted to examine the impact of temperature on the performance of an anaerobic biological contractor used to treat perchlorate-contaminated water. The contractor was successfully acclimated with indigenous microorganisms. Influent temperatures varied from 1.4 to 30 degrees C. The objectives of the study were to investigate the effects of temperature on perchl...

We consider a capacitated multi-stage operations scheduling problem encountered in a real life supply chain for disaster relief, consisting of component suppliers, a packaging contractor, local distribution centers, and many customer demand points. Each customer order has a due date and can be fulfilled by either existing inventory at distribution centers or a new assembly operation at the pack...