Although precipitation interannual variability is projected to increase due to climate change, effects of changes in precipitation variance have received considerable less attention than effects of changes in the mean state of climate. Interannual precipitation variability effects on functional diversity and its consequences for ecosystem functioning are assessed here using a 6-year rainfall ma...

The influence of nitrogen (N) limitation on the cell growth, chlorophyll content, intracellular lipid production and expression levels of two pathway genes in Chlorella sorokiniana was investigated in mixotrophic culture in this study. The maximum biomass concentration of C. sorokiniana cultured in modified BG11 medium containing 3, 6, 9, 12 and 15 mM N were 1.60, 2.21, 2.74, 3.18 and 3.21 g/L ...

The historical context surrounding the birth of the DARPA High Productivity Computing Systems (HPCS) program is important for understanding why federal government agencies launched this new, longterm high performance computing program and renewed their commitment to leadership computing in support of national security, large science, and space requirements at the start of the 21st century. In t...

Although it is well known that low nitrogen stimulates lipid accumulation, especially for algae and some oleaginous yeast, few studies have been conducted in fungal species, especially on the impact of different nitrogen deficiency strategies. In this study, we use two promising consolidated bioprocessing (CBP) candidates to examine the impact of two nitrogen deficiency strategies on lipid prod...

Corresponding Author: Saeid Abu-Romman Department of Biotechnology, Faculty of Agricultural Technology, Al-Balqa’ Applied University, Al-Salt 19117, Jordan Tel: ++962 5 3532519; Fax: ++962 5 3530469. Email:[email protected] Abstract: Air pollution exerts detrimental effects on plant ecosystems and restricts agricultural productivity. Cement dust is considered to be one of the most harmful air...

Background Compared with other general energy crops, microalgae are more compatible with desert conditions. In addition, microalgae cultivated in desert regions can be used to develop biodiesel. Therefore, screening oil-rich microalgae, and researching the algae growth, CO2 fixation and oil yield in desert areas not only effectively utilize the idle desertification lands and other resources, bu...

The TPC/27 detector and the PEP machine have been upgraded for highluminosity running. We describe the performance of the new configuration during a test run in fall 1988. Prospects for progress in 7 physics, based on a large data sample to be recorded by the TPC/Zy detector, are reviewed.

Recent research has demonstrated the existence of a positive relationship between IT investment and productivity in the context of large firms. However, the validity of such relationship for small and medium enterprises (SMEs) has not yet been established. The issue is of critical importance for SMEs, which suffer a constant struggle for survival due to the absence of slack resources and high c...

Triple product correlations (TPC’s) involving strange quark spin are elucidated in b → uūs process within the standard model. They arise when light quark masses are nonzero. As the momenta and spins of constituent quarks are related to that of the parent hadron, the quark masses are, however small, important and relevant in TPC studies. At this level the TPC’s of interest are of the form ~ss · ...

Abstract This work aimed to introduce a new technique for improving sustainable biodiesel from Microchloropsis salina by examining the impact of various nitrogen sources, salt stress, and carbon enrichment, individually or in combination, determine best treatment conditions biomass lipid productivity as well quality. M. effectively utilizes nitrate (NaNO 3 KNO ) organic (especially yeast extrac...