The performance of ad hoc networks based on IEEE 802.11 DCF degrade when congestion increases. The issues concern efficiency and fairness. Many solutions can be found at the MAC layer in the literature, but very few solutions improve fairness and efficiency at the same time. In this paper, we design a new backoff solution, called SBA. SBA uses only local information and two contention window si...

To improve the channel throughput and the fairness of random access channels, we propose a new backoff algorithm, namely, Sensing Backoff Algorithm (SBA). A novel feature of the SBA scheme is the sensing mechanism, in which every node modifies its backoff interval according to the results of the sensed channel activities. In particular, every active node sensing the successful transmission decr...

Mouse spleen cells sequentially agglutinated by soybean agglutinin (SBA) and peanut agglutinin (PNA) previously had been shown to be sufficiently depleted of graft-versus-host activity to allow reconstitution of lethally irradiated allogeneic recipient mice. We have now tested the extent of T-cell depletion in this cell fraction by various in vitro assays, including cytotoxicity testing with an...

A horseradish peroxidase conjugated lectin from Glycine max (soy bean agglutinin; SBA) was used to characterise the distribution of N-acetylgalactosamine in the cochlear nucleus of the mongolian gerbil. SBA bound differentially to a variety of structures within the cochlear nucleus. Specific SBA labelling was associated with large non-granule neurones of variable size and shape throughout the c...

This paper presents an eecient global synchronous band-width allocation (SBA) scheme for guaranteeing synchronous message deadlines in a timed token network (such as FDDI) where the timed token medium access control (MAC) protocol is used. A local SBA scheme allocates synchronous band-width to a node using only information available locally to that node while a global scheme uses network wide i...

The Group A Streptococcus Direct Test (GP-ST test; Gen-Probe, Inc., San Diego, Calif.) was compared with culture for the detection of Streptococcus pyogenes from throat swabs of 767 patients with pharyngitis. Swabs were tested by the GP-ST test after inoculating a 5% sheep blood agar (SBA) plate. SBA plates were incubated at 35 degrees C in room air for 72 h. SBA plates with no evidence of beta...

Soybean agglutinin (SBA) is a non-fiber carbohydrate-related protein and the main anti-nutritional factor that exists in soybean or soybean products. SBA possesses a specific binding affinity for N-glyphthalide-d-galactosamine or galactose and has a covalently linked oligosaccharide chain. SBA mediates negative effects on animal intestinal health by influencing the intestinal structure, barrier...

OBJECTIVES To calculate the Scapular Balance Angle (SBA) reference values in a healthy population between 18 and 85 years old, and to define abnormality criteria for this sample. MATERIALS AND METHODS A descriptive study was conducted on a total of 300 individuals (mean age: 44.83, range: 18-83; proportion male/female: 1.59), calculating the SBA through manual measurement with a goniometer. A...

Soybean agglutinin (SBA) is an anti-nutritional factor of soybean, affecting cell proliferation and inducing cytotoxicity. Integrins are transmembrane receptors, mediating a variety of cell biological processes. This research aims to study the effects of SBA on cell proliferation and cell cycle progression of the intestinal epithelial cell line from piglets (IPEC-J2), to identify the integrin s...

The growth of ordered nanorods of mesoporous SBA-15 inside a porous alumina membrane has been achieved for the first time by a simple sol-gel method. The obtained SBA-15 nanorods themselves have ordered hexagonal mesochannels with a size of about 6 nm and have been arranged to form hexagonal arrays by the limitation of pores of the alumina membrane. The synthesized alumina membrane with mesopor...