The teaching of oxygen transport by hemoglobin is supported by a graphic depiction of the sigmoid O2 dissociation curve of hemoglobin. However, a reconstruction of the same curve into an alternate paradigm, the "O2-carrying flask," affords a visual demonstration of the significance of its sigmoid shape and the implications of its shifts, which should be useful in elucidating certain aspects of ...

A one hour integrated flask sampling system to collect air in automated NOAA/ESRL 12-flask packages is described. The integrating compressor system uses a mass flow controller to regulate the flow of air through a 15 l volume, thus providing a mixture of air collected over an hourlong period. By beginning with a high flow rate of 3.8 standard liters per minute and gradually decreasing the flow ...

An efficient method has been developed for large-scale multiplication of Curculigo orchioides (Hypoxidaceae), an endangered medicinal plant, through direct bulbil formation from leaf explants in shake flask cultures. Leaf-segments (7 x 10 mm) were cultured in B5 liquid medium containing KNO3 (200 mgNL-1), (NH4)2SO4 (50 mgNL-1), benzyl adenosine (2.2 microM), adenine (0.11 mM), indole butyric ac...

A major design goal of the Flask architecture is to separate the mechanisms of concurrency control and recovery management in database programming systems. This paper describes the DataSafe component of Flask, which is the second recovery mechanism to be implemented within the architecture and therefore provides a proof of concept. The DataSafe is closely based on the DB Cache mechanism, modifi...

The Flask architecture, which mainly contains object manager (OM) and security server (SS), is widely used to support flexible security policies in operating system. In nature, OM and SS should be isolated from each other to separate decision from enforcement. However, current implementation of Flask, such as SELinux and SEBSD, puts both OM and SS in the same address space. If one component is ...

The most preferred containers by Aedes aegypti were studied April and July (rainy and dry periods) in two Manaus neighbourhoods. In all, 2,700 premises and 13,912 containers were examined, most (87%) recorded outdoors. Out of the 13,100 inspected premises, only 1.6% showed to be positive for Aedes aegypti, summing up to 7,916 collected samples. Most frequently found containers outdoors in eithe...

A new strain ofActinomycete (S. albovinaceus) no.10/2 with a broad antifungal and antibacterial activitywas isolated from soil sample of Palestine.The medium composition for antibioticproduction fromstrain S.albovinaceus was optimized using shake-flask methodology.The parameters that resulted in maximum antibiotic production are: 1.25 % mannitol and 1 % malt extract were found to be best carbon...

The morphology of Ganoderma lucidum BCCM 31549 mycelium in a repeated-batch fermentation (RBF) was studied for exopolysaccharide (EPS) production. RBF was optimised for time to replace and volume to replace. G. lucidum mycelium showed the ability to self-immobilise and exhibited high stability for repeated use in RBF with engulfed pellets. Furthermore, the ovoid and starburst-like pellet morpho...