78 Result(s)

Article

Inhibition of midgut protease of yellow stem borer (Scirpophaga incertulas) by cysteine protease-like inhibitor from mature jackfruit (Artocarpus heterophyllus) seed

A novel protease inhibitor was isolated and purified from the mature seeds of jackfruit (Artocarpus heterophyllus) by precipitation with ammonium sulphate, followed by DEAE-cellulose and gel filtration (Sephadex ...

Md. Shamim, N. A. Khan, K. N. Singh in Acta Physiologiae Plantarum (2011)

Article

Protection of growth and photosynthesis of Brassica juncea genotype with dual type sulfur transport system against sulfur deprivation by coordinate changes in the activities of sulfur metabolism enzymes and cysteine and glutathione production

Mustard (Brassica juncea L. Czern and Coss.) cvs. Pusa Jai Kisan (with low-affinity S transporter (LAT) system) and Pusa Bold (with dual, low- and high-affinity transporters (LAT + HAT) system) were supplied with...

N. A. Anjum, S. Umar, M. Iqbal, I. Ahmad… in Russian Journal of Plant Physiology (2011)

Article

Cadmium causes oxidative stress in mung bean by affecting the antioxidant enzyme system and ascorbate-glutathione cycle metabolism

Ascorbate (AsA)-glutathione (GSH) cycle metabolism is an essential mechanism for the resistance of plants under stress conditions. In a greenhouse pot experiment, the influence of cadmium (Cd) (25, 50, and 100...

N. A. Anjum, S. Umar, M. Iqbal, N. A. Khan in Russian Journal of Plant Physiology (2011)

Article

Some exact solutions of the oscillatory motion of a generalized second grade fluid in an annular region of two cylinders

The velocity field and the associated shear stress corresponding to the longitudinal oscillatory flow of a generalized second grade fluid, between two infinite coaxial circular cylinders, are determined by mea...

A. Mahmood, C. Fetecau, N. A. Khan, M. Jamil in Acta Mechanica Sinica (2010)

Article

High efficiency ZnO nano sensor, fabrication and characterization

Ultra fine thin films of pure and SnO doped ZnO nanosensor were grown on gold digitated ceramic substrate from bis(2, 4- pentanedionate)dimethylethanolamine zinc (II) using bis(2, 4-pentanedionate) tin(II) chl...

M. Hussain, M. Mazhara, T. Hussainb, N. A. Khan in Journal of the Iranian Chemical Society (2010)

Article

Increased activity of ATP-sulfurylase and increased contents of cysteine and glutathione reduce high cadmium-induced oxidative stress in mustard cultivar with high photosynthetic potential

Cadmium is known to reduce photosynthesis and overall growth of plants. Plants adopt several mechanisms of Cd detoxification, such as accumulation of sulfur-rich compounds, like glutathione (GSH) and its precu...

N. A. Khan, N. A. Anjum, R. Nazar, N. Iqbal in Russian Journal of Plant Physiology (2009)

Article

Effects of cadmium stress upon activities of antioxidative enzymes, photosynthetic rate, and production of phytochelatins in leaves and chloroplasts of wheat cultivars differing in yield potential

We tested the mode of action of Cd on photosynthesis and activities of ATP-sulfurylase (ATP-S), catalase (CAT), superoxide dismutase (SOD), ascorbate peroxidase (APX), glutathione reductase (GR), and on conten...

I. Ahmad, M. Naeem, N. A. Khan, Samiullah in Photosynthetica (2009)

Article

ATP-sulfurylase activity, photosynthesis, and shoot dry mass of mustard (Brassica juncea L.) cultivars differing in sulfur accumulation capacity

Sulfur (S) is an essential nutrient element required in a large quantity by mustard. S regulates photosynthesis and plant growth through improving nitrogen (N) acquisition. Mustard cultivars Alankar, Varuna, P...

R. Nazar, N. A. Khan, N. A. Anjum in Photosynthetica (2008)

Article

Acetylene and Ethylene Hydrogenation on Alumina Supported Pd-Ag Model Catalysts

Adsorption and co-adsorption of ethylene, acetylene and hydrogen on Pd-Ag particles, supported on thin alumina films, have been studied by temperature programmed desorption (TPD). The TPD results show that add...

N. A. Khan, S. Shaikhutdinov, H. -J. Freund in Catalysis Letters (2006)

Article

N-3 Fatty acids modulate antioxidant status in diabetic rats and their macrosomic offspring

We investigated the role of dietary n-3 polyunsaturated fatty acids (n-3 PUFA) in the modulation of total antioxidant status in streptozotocin (STZ)-induced diabetic rats and their macrosomic offspring.

A Yessoufou, N Soulaimann, S A Merzouk, K Moutairou… in International Journal of Obesity (2006)

Article

Nonlinear photoacoustic response of opaque media in gas microphone signal detection

We have theoretically studied the effect of thermal nonlinearity, due to the temperature dependence of the thermophysical and optical parameters for thermally thick opaque media, on the characteristics of the ...

U. Madvaliev, T. Kh. Salikhov, D. M. Sharifov… in Journal of Applied Spectroscopy (2006)

Article

The influence of gibberellic acid and sulfur fertilization rate on growth and S-use efficiency of mustard (Brassica juncea)

Earlier research has shown that exogenous gibberellic acid (GA₃) application increases shoot growth, photosynthesis and soil nitrogen (N) utilisation in mustard (Brassica juncea L. Czern & Coss.). Mustard has a h...

N. A. Khan, M. Mobin, Samiullah in Plant and Soil (2005)

Article

Activity of 1-Aminocyclopropane Carboxylic Acid Synthase in Two Mustard (Brassica juncea L.) Cultivars Differing in Photosynthetic Capacity

The pattern of activity of 1-aminocyclopropane carboxylic acid synthase (ACS) was similar to photosynthetic and growth traits observed at 30, 45, and 60 d after sowing in mustard (Brassica juncea L.) cultivars Va...

N.A. Khan in Photosynthetica (2004)

Article

NaCl-Inhibited Chlorophyll Synthesis and Associated Changes in Ethylene Evolution and Antioxidative Enzyme Activities in Wheat

Effect of NaCl was studied on chlorophyll (Chl) synthesis and its intermediates (protoporphyrin IX, Mg-protoporphyrin IX, and protochlorophyllide), dry mass, ethylene evolution, and activities of superoxide di...

N.A. Khan in Biologia Plantarum (2003)

Article

Activities of Carbonic Anhydrase and Ribulose-1,5-Bisphosphate Carboxylase, and Dry Mass Accumulation in Brassica juncea following Defoliation

The effect of 30 % defoliation of shaded leaves in lower layers of plant was studied on activities of carbonic anhydrase (CA) and ribulose-1,5-bisphosphate carboxylase (RuBPC), leaf dry mass per unit leaf area...

N.A. Khan in Photosynthetica (2002)

Article

Effects of gibberellic acid spray on nitrogen yield efficiency of mustard grown with different nitrogen levels

Mustard is cultivated throughout the world for oil in its seeds. Itrequires high nitrogen input for improved productivity but the nitrogen appliedto the soil is not fully utilised by the crops due to various c...

N.A. Khan, R. Mir, M. Khan, S. Javid, Samiullah in Plant Growth Regulation (2002)

Article

Effect of gibberellic acid and nitrogen on carbonic anhydrase activity and mustard biomass

In mustard(Brassica juncea L.) addition of 20 mM nitrogen (in the form of NaNO₃) inhibited after 50 d the activities of carbonic anhydrase and nitrate reductase and net photosynthetic rate. However, when nitrogen...

N. A. Khan, H. R. Ansari, M. Mobin in Biologia Plantarum (1996)

Article

Effect of gibberellic acid on carbonic anhydrase, photosynthesis, growth and yield of mustard

The plants of mustard (Brassica juncea L.) were treated with 0, 25 and 50 ΜM gibberellic acid (GA₃) at three fully developed leaf stage (30 d after sowing). Effect of GA₃ on carbonic anhydrase activity, photosynt...

N. A. Khan in Biologia Plantarum (1996)

Article

Role of boat material in the synthesis of 123 superconductor from copper cyanide

N. A. Khan, N. Baber, M. Zafar Iqbal in Journal of Materials Science Letters (1993)