The study was carried out to determine the seasonal variation of nitrite levels in drinking and surface waters of urban, peri-urban and rural areas of Lucknow, during 2007-2008, and to evaluate the nitrite removal and accumulation potential of certain native aquatic macrophytes. Most of the drinking and surface water samples were collected from urbanized region of the city. All drinking water s...

The ability of plants to move is central to many physiological processes from development to tropisms, from nutrition to reproduction. The movement of plants or plant parts occurs over a wide range of sizes and time scales. This review summarizes the main physical mechanisms plants use to achieve motility, highlighting recent work at the frontier of biology and physics on rapid movements. Empha...

Carolina bays are depression wetlands of high conservation value that occur across the Southeastern Coastal Plain of the United States. Venus flytrap (Dionaea muscipula) is one rare carnivorous plant that grows in open habitats on the rims of Carolina bays. Without frequent burning, vegetation on bay rims becomes dominated by evergreen shrubs and Venus flytrap populations decline. This project ...

Plant genome size variation is a dynamic process of bloating and purging DNA. While it was thought plants were on a path to obesity through continual DNA bloating, recent research supports that most plants activity purge DNA. Plant genome size research has greatly benefited from the cataloguing of genome size estimates at the Kew Plant DNA C-values Database, and the recent availability of over ...

Size effect in mechanical behavior of finite-sized graphene nanoribbons (GNRs) under uniaxial tension is studied using Molecular Dynamics (MD) simulations. The size effect and aspect ratio effect are significant in zigzag GNRs (ZGNRs), while their influence on the mechanical behavior of armchair GNRs (AGNRs) is negligible. For square shaped ZGNRs of increasing size, the elastic modulus increase...

The reniform nematode (Rotylenchulus reniformis Linford & Oliveira) is an important problem in U.S. cotton, and all cultivars support high R. reniformis populations. The objectives of this research were to find better sources of resistance to R. reniformis than are known within G. hirsutum L. and G. barbadense L. and to determine if any of these sources are also resistant to the root-knot nemat...

Plots naturally infested with Rotylenchulus reniformis were sampled in the spring of 2006 and 2007 at depths of 15 and 30 cm in the bed, furrow over the drip tape, and "dry" furrow, and at approximately 40 to 45 cm depth in the bed and dry furrow. Then, 1,3-dichloropropene (Telone EC) was injected into the subsurface drip irrigation at 46 kg a.i./ha, and 3 to 4 weeks later the plots were resamp...

A new carbazole alkaloid, antipathine A (1), together with three known zoanthoxanthin alkaloids (2--4) was isolated from the EtOH/CH2Cl2 extracts of the South China Sea black coral Antipathes dichotoma. The structure of 1 was determined on the bases of extensive spectroscopic analysis, including 1D and 2D NMR data. Compounds 1 and 2 showed moderate cytotoxicity against human stomach carcinoma S...

Prehensile-tailed porcupines (Coendou prehensilis), like other rodents, lack external sexual traits, making it difficult to non-invasively determine their gender. By exploiting genetic differences between the X and the Y chromosome, we developed a simple genetic test to determine the gender of Coendous from shed quills. We Sanger sequenced a short portion (195 bp) of the zinc finger protein gen...