NUCLEIC-ACID BINDING DRUGS .2. PROFLAVINE FREE BASE

C13HIIN3.H20 , orthorhombic, Cmc21, a= 14.493 (8), b= 14.675 (8), c= 5.772 (5) A, Din= 1.29 (1), De= 1.298 g cm -3 for Z=4. Equi-inclination Weissenberg intensities, scanned with an automatic densitometer. The structure, solved by direct methods, was refined to R 0.0928 and Rw 0.0910 for 418 reflexions. The ring system is slightly non-planar, and the crystal structure is characterized by a lack of interplanar stacking

9-CHLOROACRIDINE

C~3HsNC1, orthorhombic, P212~2 ~, a = 6.850 (3), b = 11.662 (5), c = 12.705 (5) A, O m = 1.40 (1), D c = 1.393 g cm -3 for Z = 4. Equi-inclination Weissenberg intensities, scanned with an automatic densitometer. The structure, solved by direct methods, refined to R 0.0577 and R w 0.0649 for 1653 reflexions. The crystal structure is characterized by partial stacking of the chromophores, these are slightly non-planar

CRYSTAL-STRUCTURE OF AN ORTHORHOMBIC FORM OF ADENOSINE-5'-MONOPHOSPHATE

Adenosine-Y-phosphate monohydrate was crystallized in the orthorhombic space group P212121, with a=22"997 (2), b=9.406 (1), c=6.599 (1)A,, Z=4. The structure was solved by direct methods and refined to a final Rw of 0.0639 for 1320 significant reflexions measured on an automatic diffractometer. The conformation of the molecule differs significantly from that previously reported for the monoclinic monohydrate [Kraut & Jensen, Acta Cryst. (1963), 16, 79-88]. The sugar conformation, for example, is here C(2)'-endo, and the glycosidic torsion angle has altered by almost 50 °

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ENV-610: EFFECT OF NUTRIENTS ON METHANOTROPHIC OXIDATION ACTIVITY IN BATCH EXPERIMENTAL STUDIES

Methane biofiltration (MBF) has been proposed as an effective and cost efficient method for mitigating methane emissions from anthropogenic sources. Previous MBF studies have successfully demonstrated effective methane oxidation using compost, soil and biodegradable organic materials as the filter medium because they are a natural source of nutrients, organic matter content, and provide adequate space to support microbiological growth. However, these media types will inevitably decompose over time and lose their effectiveness. This study investigates the use of biologically stable media mixtures of lava rock and biochar in batch oxidation studies to determine their ability to support a methanotrophic bacterial population for the oxidation of methane. A screening experiment was performed using an unreplicated 23 factorial design to understand the influence of nutrient content, water holding capacity (WHC), and mixture ratios of lava rock and biochar, by volume, on the methane oxidation rate (MOR). Virtually no activity was observed when 3300 ppm of nitrogen were added to the batches. Methane oxidation activities were only observed when lower nutrient additions were made at 96 ppm of nitrogen with values reaching 2.2 - 2.5 mol/mL∙hr when the WHC was adjusted to 50% regardless of the media composition. Subsequent replicates performed at the lower nitrogen level additions and 30% WHC demonstrated similar MORs. Results demonstrate the supplementation of nutrients to a mixture of lava rock and biochar is possible in supporting a methanotrophic population and that lava rock can be used as a bulking agent

CRYSTAL AND MOLECULAR-STRUCTURE OF 2',3',5'-TRI-O-ACETYL-6-O-(MESITYLENESULPHONYL)GUANOSINE

The structure of a 6-O-mesitylenesulphonyl derivative of 2',3',5'-tri-O-acetylguanosine, C 24 H 29 N50 10 S, has been determined by X-ray diffraction. Crystals are monoclinic, a = 26.370 (4), b = 8.200 (2), c = 17.991 (3) A, fl = 132.77 (4) o. The solution of the structure in space group C2 was not straightforward and is described in detail. Refinement converged at R = 0.110 for 1102 observed reflections. The guanine base displays some deviations from its usual geometry due to the loss of C(6)-O(6) double-bond character. The ribose sugar is C(2')-endo puckered

The inshore migration of buccaneer anchovy during monsoon

A large scale inshore migration of Buccaneer anchovy, Encrasicholina punctifer (=Stolephorus buccaneeri) resulted in heavy landing of the fish by boat seine during 19- 22 July '94 at Vizhinjam. The catch details of the boat seine during the four days are give

Focus on small-scale fisheries sector. Adventurous launching of catamarans for monsoon fishery at valiathura, Trivandrum

Although the method adopted by the fishermen for launching of their catamarans H quite ingenious, it is most hazardous and full of perils. Out of sheer necessity to make a livelitood the fishermen have evolved this method when the stormy breakers of the monsoon season prevent them from launching their crafts into the sea. Accidents, sometimes fatal, often happen while launching or landing these fishing crafts. The Catamaran on launching, may hit against the concrete pillars of the pier and break into bits. The Fishermen sometimes sustain hits, cuts and fractures on jumping into the water, as waves dash Them against the concrete pillar or the catamaran itself. Several such accidents have been reported. In this connection it would be most useful if the state Government think in terms of implementing Insurance or some such schemes in order to helpthe fishermen and their family who get involved in Such calamities

Review on cephalopod resources, biology and stock assessment in Indian seas

Cephalopods are fished from the seas around India from very early times and at present contribute one of the most important exploited marine fishery resources oj the country (between 4 and 5% of the all India production). The production, which remained at very low level up to the early seventies, has shown a remarkable increase crossing the 1,00,000 tonne mark in 1994. The taxonomy, biology and stock assessment of the various exploited species have been studied since the early seventies by the CMFRI. Studies indicate that uplo 1994 tlie exploitation has remained within rational limits in almost all maritime states. The recent rapid increase in production warrants close monitoring of this short-lived resource from the viewpoint of Judicious management