644 research outputs found
Effect of fungal biosorbed and nonbiosorbed copper and zinc metal solutions on growth and metal uptake of leguminous plants
Effect of Zn, Cu and Cu + Zn at 10, 25, 50, 100, 200 and 500ppm concentrations of fungal untreated and treated metal solutions on seed germination and seedling vigor of Cicer areietinum (Chick pea), Macrotyloma uniflorum (Horse gram), Vigna radiata (Green gram) and Vigna unguiculata (Cowpea) were evaluated. Heavy metal solutions were prepared in increasing concentration up to the concentration critical to the soil. Increased metal concentrations reduced the seed germination and growth of test plants. Low metal concentrations of 10, 25, 50 ppm, stimulated the shoot, root and seed germination in test plants. Untreated and treated effluent was not acutely toxic to the seed germination and plant growth. In Aspergillus niger and Aspergillus flavus biosorbed metal ions, reduced metal toxicity with increased seedling vigor was observed. Efficiency of metal biosorption by fungal biomass and metal ions tolerance and accumulation ability in test plants were analyzed by Atomic Absorption Spectrophotometer (AAS). Â
Manurial value of byproducts of bio-diesel feed stocks on finger millet grain and dry fodder productivity
A replicated field experiment was conducted at Agricultural Research Station (ARS), Madenur located in Hassan District, Karnataka in rainy season during 2007 to assess the manurial value of by-products of bio-diesel feed stocks-pongamia and neem oil seed cakes vis-à-vis conventional plant nutrients sources (combination of farm yard manure and inorganic fertilizers) on the grain and fodder productivity of finger millet, the staple food cereal of southern Karnataka. Grain and dry fodder productivity of finger millet crop grown using pongamia and neem seedoil cakes is comparable to that grown using conventional plant nutrient sources. Application of plant nutrients only through pongamia and neem seed oil cakes resulted in higher available soil Nitrogen, Potassium and Organic Carbon contents
Manurial value of byproducts of bio-diesel feed stocks on finger millet grain and dry fodder productivity
A replicated field experiment was conducted at Agricultural Research Station (ARS), Madenur located in Hassan District, Karnataka in rainy season during 2007 to assess the manurial value of by-products of bio-diesel feed stocks-pongamia and neem oil seed cakes vis-Ã -vis conventional plant nutrients sources (combination of farm yard manure and inorganic fertilizers) on the grain and fodder productivity of finger millet, the staple food cereal of southern Karnataka. Grain and dry fodder productivity of finger millet crop grown using pongamia and neem seedoil cakes is comparable to that grown using conventional plant nutrient sources. Application of plant nutrients only through pongamia and neem seed oil cakes resulted in higher available soil Nitrogen, Potassium and Organic Carbon contents
Surgical management of fractures of distal end radius using uniplanar external fixator augmented with percutaneous kirschner wire fixation
Background: Distal end radius fractures is one of the most common fractures of the upper limb especially in the elderly population, accounting for about 17% of all upper limb fractures. Surgical stabilization of these fractures remains a challenge even today. Although the recent trend is towards internal fixation with locking plates, the external fixator itself has its own advantages in the treatment of these fractures.Methods: This study is a prospective, time bound, hospital based study conducted in Kempegowda Institute of Medical Sciences and Research Center, Bangalore, between November 2014 to April 2016. The study included 30 cases of distal end radius fractures that were operated with the closed reduction and uniplanar external fixator augmented with k-wire for distal end radius by the principle of ligamentotaxis.Results: In our study, 14 (46.6 %) patients had excellent results. Whereas, 11 (36.7%) patients had good results and 3 (10%) had fair and only 2 (6.7%) patients had poor results. Most of the fractures united by 12 weeks. Complications associated with the study was stiffness, malunion, sudeck’s osteodystrophy and pin tract infection. Conclusions: The uniplanar external fixator augmented with k-wire is a good choice in the treatment of distal end radius fractures in terms of providing a good functional outcome if proper preoperative planning, good reduction and surgical technique are followed, leading to high rate of bone union, minimal soft tissue damage and complications
A novel amperometric catechol biosensor based on α-Fe2O3 nanocrystals-modified carbon paste electrode
In this work, we designed an amperometric catechol biosensor based on α-Fe2O3 nanocrystals (NCs) incorporated carbon-paste electrode. Laccase enzyme is then assembled onto the modified electrode surface to form a nanobiocomposite enhancing the electron transfer reactions at the enzyme’s active metal centers for catechol oxidation. The biosensor gave good sensitivity with a linear detection response in the range of 8–800 μM with limit of detection 4.28 μM. We successfully employed the sensor for real water sample analysis. The results illustrate that the metal oxide NCs have enormous potential in the construction of biosensors for sensitive determination of phenol derivatives
Effect of Inoculation with Arbuscular Mycorrhizal Fungi on Green Gram Grown in Soil Containing Heavy Metal Zinc
Pot culture experiments were conducted to determine the effects of Arbuscular Mycorrhizal Fungi (AMF) on growth and Zn metal uptake by the green gram grown in soil containing 25, 50 and 100 mg kg-1 ZnSO4. AMF inoculated and non-AMF inoculated green grams were grown in sterilized substrates containing ZnSO4 and compared its effects on plant growth. Decreased Percentage of AMF colonization was observed with increasing in Zn concentration. Significant increase in root length, shoot length, total biomass, with decreased Zn uptake in shoot region was observed in AMF inoculated plants compared to AMF non-inoculated plants. High Zn accumulation was observed in the root region of mycorrhizal inoculated plant. Over all results indicate that AMF could promote the green gram growth with decreased Zn metal uptake from soil and thus protects the plant from metal toxicity
Influence of Pongamia, Mahua and Neem cakes on finger millet productivity and soil fertility
A field experiment conducted at Bio-fuel park, Agricultural Research Station, Madenur, Hassan in Kharif season of 2009 to asses the performance of finger millet (Eleusine coracana L.) under different organic manure treatment consisting of four treatments viz., recommended FYM and NPK through inorganic fertilizers as control, Pongamia, Mahua and Neem cake with 5 replications laid in randomized complete block design. The results revealed that application of recommended FYM along with neem cake equivalent to 100% recommended N performedbetter in respect of finger millet productivity and maintenance of soil fertility followed by recommended FYM with 100% NPK through fertilizers. Nutrient supplementation with different oilcakes proved superior in respect of soil sustainability
The discretised harmonic oscillator: Mathieu functions and a new class of generalised Hermite polynomials
We present a general, asymptotical solution for the discretised harmonic
oscillator. The corresponding Schr\"odinger equation is canonically conjugate
to the Mathieu differential equation, the Schr\"odinger equation of the quantum
pendulum. Thus, in addition to giving an explicit solution for the Hamiltonian
of an isolated Josephon junction or a superconducting single-electron
transistor (SSET), we obtain an asymptotical representation of Mathieu
functions. We solve the discretised harmonic oscillator by transforming the
infinite-dimensional matrix-eigenvalue problem into an infinite set of
algebraic equations which are later shown to be satisfied by the obtained
solution. The proposed ansatz defines a new class of generalised Hermite
polynomials which are explicit functions of the coupling parameter and tend to
ordinary Hermite polynomials in the limit of vanishing coupling constant. The
polynomials become orthogonal as parts of the eigenvectors of a Hermitian
matrix and, consequently, the exponential part of the solution can not be
excluded. We have conjectured the general structure of the solution, both with
respect to the quantum number and the order of the expansion. An explicit proof
is given for the three leading orders of the asymptotical solution and we
sketch a proof for the asymptotical convergence of eigenvectors with respect to
norm. From a more practical point of view, we can estimate the required effort
for improving the known solution and the accuracy of the eigenvectors. The
applied method can be generalised in order to accommodate several variables.Comment: 18 pages, ReVTeX, the final version with rather general expression
On a Ramanujan Quantity
Abstract: In this paper, We study the several modular equations of Ramanujan Quantities R(1, 2, 4; q) (established by Nikos Bagis) and R(1, 2, 4; q n ) for n = 4, 6, 8, 9, 10, 11, 13, 14, 15, 17, 19, 23 and 25
Dissipative collisions in O + Al at E=116 MeV
The inclusive energy distributions of fragments (3Z7) emitted in
the reaction O + Al at 116 MeV have been measured in
the angular range = 15 - 115. A non-linear
optimisation procedure using multiple Gaussian distribution functions has been
proposed to extract the fusion-fission and deep inelastic components of the
fragment emission from the experimental data. The angular distributions of the
fragments, thus obtained, from the deep inelastic component are found to fall
off faster than those from the fusion-fission component, indicating shorter
life times of the emitting di-nuclear systems. The life times of the
intermediate di-nuclear configurations have been estimated using a diffractive
Regge-pole model. The life times thus extracted (
Sec.) are found to decrease with the increase in the fragment charge. Optimum
Q-values are also found to increase with increasing charge transfer i.e. with
the decrease in fragment charge.Comment: 9 pages, 4 figures, 1 tabl
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