Exosmosed substances on the leaf-blade of rice (oryza sativa L.)

This article does not have an abstract

Kinetics of Oxidation of Methyl Orange & Methyl Red by V(V)*

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Prediction of wave reflection for quarter circle breakwaters using soft computing techniques

The modified form of the semi-circular breakwater is called Quarter-Circle Breakwater (QBW). It consists of a quarter-circular surface facing incident waves, a horizontal bottom, a rear wall, and is built on a rubble mound foundation. In general, QCB may be constructed as emerged, with and without perforations that may be on one side or either side based on the coastal designer. These perforations dissipate the energy due to the formation of eddies and turbulence created inside the hollow chamber. In the present study, experimental data obtained from Binumol, 2017 are fed as input to both the models. This data is used to predict the reflection coefficient of QBW by adopting the ANN system approach. The reliability of the Artificial Neural Network (ANN) approach is done with statistical parameters, namely Model Performance Analysis (MPA) viz., Correlation Coefficient (CC), Root Mean Square Error (RMSE), Nash-Sutcliffe Efficiency (NSE), and Scatter Index (SI). The results of the MPA indicate that the ANN is suited for predicting the reflection coefficient of QBW

Changes at transcriptional level in the rat liver following whole-body X-irradiation

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Proliferating trichilemmal tumour: a case report with review of literature

Proliferating trichilemmal tumour is a solid-cystic neoplasm that shows trichilemmal differentiation similar to that of the isthmus of the hair follicle histologically characteristed by the presence of trichilemmal keratinization.  Proliferating Trichilemmal Tumour (PTT) appears mainly in elderly women and is in general a solitary lesion on the scalp. Proliferating trichilemmal tumours generally have a benign clinical course, and a clinical differentiation from squamous cell carcinoma is often difficult. We report a case of PTT in a 30 year old man presenting as a solitary 10x8 cm ulcerated nodule on the scalp since 3 months clinically resembled a malignant tumour. The therapeutic approach is surgical removal with a wide clear margin

Search for physiologically active compounds. Part XIII. Synthesis of some 3-amino-4-hydroxy coumarins and coumarino (3:4) oxazoles as analogues of Novobiocin

A number of 3-amino-4-hydroxy coumarins substituted in the benzene ring have been synthesised by two methods starting from 4-hydroxy coumarins, one by nitration and reduction, and the other by diazotisation-coupling and reduction. The amino hydroxy coumarins have been converted into the corresponding (3:4) oxazoles by condensation with aromatic aldehydes. The ultraviolet and infrared spectral data as well as their bacteriostatic and fungistatic properties are presented

Column flotation technology for the beneficiation of coking and non-coking coal fines

The importance of coal is bound to increase for the coming years with the growth of coal consuming industries. Power sector is the most potential consumer of the non-coking coal and for coking coal iron & steel sector remains the major consumer. In future, coal gasification which is successfully adopted in China, an advanced coal-based power generation technology has the potential to provide higher generating efficiency and can be adopted to efficiently burn India’s high-ash coals. In the present study investigations are carried out on coal fines for both coking and non coking coals by conventional and column flotation techniques to suit industrial applications. Coking coal sample is taken from Jamadoba area in Jharkhand and non-coking coal is drawn from coal belt in Central Coal Fields, Jharkhand. For both the coals detailed studies are in progress for optimizing the reagent consumption and to establish the feasibility of column flotation technology for producing low ash concentrates with reasonably high recoveries

Recovery of values from tailing ponds of iron ore washing plants

Most of the Iron ore washing plants set up in India in the earlier days consist of sizing of the ore by dry / wet screening, washing and classification by screw classifiers. In this classical approach, iron values were lost in the form of fines and utrafines into the tailing ponds as they had little commercial value in those days and accumulated in huge quantities over the years. As the high grade deposits are getting exhausted and the demand for high grade finer material for pellet making is ever increasing, focus is shifting towards recovering the values from the erstwhile tailing ponds by column flotation. This is also supposed to mitigate to certain extent the environmental problems caused by the ever expanding and unmanageable tailing dams. A case study is presented wherein a composite sample is prepared from samples drawn systematically from multi - locations in a sprawling tailing dam. Laboratory scale column flotation tests on this composite tailings sample, basically originating from two operating iron ore beneficiation plants of JSW Steel Ltd., one of the leading producers of steel in India, are found to be encouraging. De-sliming followed by reverse and cationic flotation tests using flotation column resulted in the concentrate of 61.88% Fe, 4.81% SiO2, 2.52% Al2O3 and 3.30% loss on ignition (LOI) from the tailings analysing 57.86% Fe, 7.10% SiO2, 3.52% Al2O3 and 6.14% LOI with 52% weight recovery. The causes for the quality improvement could be attributed to de-sliming of unliberated ultra fines of kaoline and hydrated iron oxides and their further reduction by efficient flotation process. The process and the cationic collector developed for this purpose are adopted in the new flotation plant created to treat these tailings

Spreading of casein and derivatives

1. Casein has been spread from its aqueous solutions by different methods and it has been found that the modified band method is the most suitable for the study of protein films. 2. Effect of salts on the spreading of casein has been studied. The results obtained can be explained on the basis that two different factors, solubility and the electric charge of the protein molecule influence spreading. 3. Treatment of the protein with formaldehyde causes a decrease in spreading. Change in pH affects spreading of formolised casein to a smaller degree. 4. Sodium metaphosphate diminishes markedly the spreading of casein. Trichloracetic acid, however, has no effect. 5. Deaminisation of casein alters the spreading properties and gives unstable films on acidulated water. No films can be got on distilled water. 6. The spreading properties of an isodisperse fraction of casein have been studied. The limiting area of this fraction has been found to be of the same order as that of the original material

Search for physiologically active compounds. Part III. Synthesis of 7-nitro-2-methyl-3-aryl quinazolones

7-nitro-2-methyl-3-aryl quinazolones have been prepared by condensation of 4-nitro-N-acetyl anthranilic acid with aryl amines. These nitro quinazolones have been tested against bacteria. The 3-(p-bromo phenyl) derivative is found to have the maximum activity