Residues of methoxychlor and other chlorinated hydrocarbons in water, sand, and selected fauna following injections of methoxychlor black fly larvicide into the Saskatchewan River, 1972.     

F J Fredeen  J G Saha  M H Balba 《Pesticides monitoring journal》1975,8(4):241-246

In May 1972, 0.309 ppm methoxychlor black fly larvicide was applied in a single test on the North Saskatchewan River. Eight to nine days later residues of 0.05-0.10 ppm methoxychlor occurred in sand 21-22 km downstream from the point of injection. Methoxychlor was not detected in water, insect larvae, shellfish, or muscle tissues of three fish species on the same sampling date. Perhaps because of relatively high oil content in goldeye fish, methoxychlor residues in muscle tissues were 1.0-1.5 ppm in 8 percent of those sampled, 0.21-0.99 in 21 percent, and 0.02-0.20 in 37 percent. In 34 percent of the goldeye fish no residues were detected. Goldeye and other fish collected before or 17 weeks after this injection did not contain detectable levels of methoxychlor. River water in two samples of the injected slug of water collected 6.5 km downstream from the point of injection contained 0.14 and 0.16 ppm methoxychlor. The suspended solids filtered from these sample contained 40 and 47 percent of this methoxychlor (437 and 892 ppm, respectively). Thus methoxychlor may act selectively against filter-feeding species, especially black fly larvae.  相似文献   

Evaluation of purgative activity of roots of Rumex nepalensis     

Ghosh L  Gayen JR  Murugesan T  Sinha S  Pal M  Saha BP 《Fitoterapia》2003,74(4):372-374

The methanol extract of Rumex nepalensis Spreng. roots at the oral dose of 100-400 mg/kg exhibited significant and dose-dependent purgative activity.  相似文献   

G. Schroth, G. A. B. da Fonseca, C. A. Harvey, C. Gascon, H. L. Vasconcelos and A. N. Izac (eds), Agroforestry and Biodiversity Conservation in Tropical Landscapes     

Subhrajit K. Saha 《Agroforestry Systems》2006,68(3):247-249

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Antidiarrhoeal activity of the bark extract of Careya arborea Roxb     

Rahman MT  Khan OF  Saha S  Alimuzzaman M 《Fitoterapia》2003,74(1-2):116-118

The methanol extract of the Careya arborea Roxb. bark significantly reduced castor oil-induced diarrhoea in mice. This effect supports the local traditional use of the plant against diarrhoea.  相似文献   

Evaluation and selection of multipurpose tree for improving soil hydro-physical behaviour under hilly eco-system of north east India     

R. Saha  J. M. S. Tomar  P. K. Ghosh 《Agroforestry Systems》2007,69(3):239-247

Soil hydro-physical behaviour was studied under a 20-year old agroforestry plantation consisting of five multipurpose tree species (Pinus kesiya Royle ex-Gordon, Alnus nepalensis D.Don, Parkia roxburghii G.Don, Michelia oblonga Wall. and Gmelina arboria Roxb.) maintained under normal recommended practices at Indian Council of Agricultural Research (ICAR) Complex, Umiam, Meghalaya, India. The aim was to select tree species, which could act as better bio-ameliorant as well as provides higher economic return in highly degraded soil of northeastern hill region of India. A site without vegetation (no tree) nearby the plantation was also selected as control for comparison. Soil samples for various hydro-physical analysis, were taken from 0–15 and 15–30 cm soil depth at a distance of 1 m from respective tree species during wet and dry season of 2003–2004. No appreciable differences in relative contents of textural separates of sand, silt and clay were observed among various tree covers. Surface cover with constant leaf litter fall and extensive root system increased soil organic carbon, helped in better soil aggregation, improved water transmissivity and infiltrability and in turn, reduced soil erosion in the present study. However, due to variation in quantity of leaf litter fall and root biomass, these parameters differed among tree species. Of the tree species, P. kesiya, M. oblonga and A. nepalensis were found to be rated best for bio-amelioration of soils as these tree covers had more root and shoot biomass and more litter fall compared to other species. However, considering both timber production and improvement in hydro-physical behaviour, M. oblonga was found best among the tested tree species. The study, thus, suggested that inclusion of tree species M. oblonga in agroforestry system is a viable option for natural resource management and could sustain long-term soil productivity in a highly degraded soil of this region as well as for food security of the resource poor people of North East India.  相似文献   

Influence of increased environmental water salinity on gluconeogenesis in the air-breathing walking catfish, Clarias batrachus     

Saha N  Jyrwa LM  Das M  Biswas K 《Fish physiology and biochemistry》2011,37(3):681-692

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Simple sequence repeats as useful resources to study transcribed genes of cotton   总被引：12，自引：0，他引：12  

Sukumar Saha  Mehmet Karaca  Johnie N. Jenkins  Allan E. Zipf  O. Umesh K. Reddy  Ramesh V. Kantety 《Euphytica》2003,130(3):355-364

Microsatellites or Simple Sequence Repeats(SSRs) are informative molecular genetic markers in many crop species. SSRs are PCR-based, highly polymorphic, abundant, widely distributed throughout the genome and inherited in a co-dominant manner in most cases. Here we describe the presence of SSRs in cDNAs of cotton. Thirty one SSR primer pairs of 220 (∼14%) tested led to PCR amplification of discrete fragments using cotton leaf cDNA as template. Sequence analysis showed 25% of 24randomly selected cDNA clones amplified with different SSR primer pairs contained repeat motifs. We further showed that sequences from the SSR-containing cDNAs were conserved across G. barbadense and G. hirsutum, revealing the importance of the SSR markers for comparative mapping of transcribed genes. Data mining for plant SSR-ESTs from the publicly available databases identified SSRs motifs in many plant species,including cotton, in a range of 1.1 to4.8% of the submitted ESTs for a given species. This revised version was published online in August 2006 with corrections to the Cover Date.  相似文献   

Effect of commercial processing techniques on lindane- and DDT- 14 C residues in rapeseed oil     

J G Saha  M A Nielsen  A K Sumner 《Journal of agricultural and food chemistry》1970,18(1):43-44

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Arsenic poisoning in west bengal     

Saha DP 《Science (New York, N.Y.)》1996,274(5291):1287b-1288b

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Mutational analysis of the tyrosine kinome in colorectal cancers     

Bardelli A  Parsons DW  Silliman N  Ptak J  Szabo S  Saha S  Markowitz S  Willson JK  Parmigiani G  Kinzler KW  Vogelstein B  Velculescu VE 《Science (New York, N.Y.)》2003,300(5621):949

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