In this paper we investigate a property named GL(p, q) which is closely related to the Gordon-Lewis property. Our results on GL(p, q) are then used to estimate volume ratios relative to lp, 1 < p ≤ ∞, of unconditional direct sums of Banach spaces. Introduction In this paper we investigate a property named GL(p, q), 1 ≤ p ≤ ∞, 1 ≤ q ≤ ∞, closely related to the Gordon-Lewis property GL, and the b...

Studies on the nucleolytic activity of cell homogenates of Tetrahymena pyriformis indicated that enzyme activity was, among other factors, a function of the age of the culture (1, 2). It was shown that the specific activities of ribonuclease (RNase) (EC 2.7.7.h) and acid phosphatase (APase) (EC 3.1.3.2) in crude homogenates prepared from stationary-phase cultures were consistently higher than t...

A high efficiency shoot organogenesis from callus cultures and plant establishment protocol has been developed for cotton (Gossypium hirsutum L. cv SVPR-2) through shoot tip. After 6 weeks of culture, green-compact-nodular organogenic callus induction was observed on the medium fortified with (MS) basal salts, B5 vitamins, 2.0 mgl-1 of benzylaminopurine (BAP), 1.0 mgl-1 kinetin (KN), 30 gl-1 gl...

the effects of sucrose and some regulators on freezing tolerance in chickpea studied. four weeks in vitro explants were cultured in three different ms media without growth regulators and with normal level of sucrose (30 gl-1) (a), without growth regulators and with reduced sucrose (10 gl-1) (b) and medium supplemented with lmg gl-1 bap and 0.1 mgi1 iba and with 30 gi-1sucrose (c) for two weeks....

Forty-one soil and root samples from the rhizosphere of some dominant plants of deserts of Semnan province (NE Iran) were collected and examined in this survey. No mycorrhizal symbiosis was found in 24% of the collected plants, while in 76% of them mycorrhizal symbiosis was detected as fungal structures in roots or AMF spores in soils. The highest degree of colonization (76%) was found near the...