The Acheulian Industry of rock shelter IIIF-23 at Bhimbetka, Central India - a preliminary study.

In the last three and a half decades systematic exploration of many regions in India for palaeolithic remains has been carried out by workers from several institutions, the majority of them from the Deccan College, Poona, working under the inspiration and guidance of Professor H.D. Sankalia. Acheulian industries have been found over almost all of the country except the Indo-Gangetic plains and the western coast. As a result of these studies the geographic distribution of Acheulian industries is now fairly satisfactorily known

Planning of Library and Doucmentation Services in the Central Mechanical Engineering Research Institute, Durgapur

The background and importance of engineering industry in the economy of India and its dependence on foreign know-how are traced. The significance of indigenous research and development activities and the objectives and functions of the Central Mechanical Engineering Research Institute (CMERl) in this context are mentioned. The necessity for library and documentation services, and their planning is pointed but. The acquisition programme, bibliographical organisation of the documents and the different types of documentation services offered by the CMERI Library are described

Terms of trade, rural poverty, technology and investment: the Indian experience, 1952-53 to 1990-91

PRIFPRI3EPT

Role of Terms of Trade in Indian Agricultural Growth: A National and State Level Analysis

Using time series data, this paper analyses the relative contributions of terms of trade and non-price variables in explaining agricultural growth in recent decades in India. Agricultural growth is largely explained by expansion of irrigation, (which in the model is also a proxy for HYVs and other capital investments), and, until the 1970s, by increases in the net cultivated area. Agricultural output is inelastic, and is becoming increasingly more so over time. The terms of trade was not an important factor in explaining past growth. Even during the late 1960s and early 1970s when the terms of trade improved by 18 percent for agriculture, they only accounted for 15 percent of the growth in output. Increases in agricultural output are also found to worsen the terms of trade for agriculture, despite government attempts to control prices. The results highlight the importance of further investments in agricultural research, extension, irrigation and other supply-enhancing inputs if the ongoing policy reforms in India are to translate into more rapid and sustained agricultural growth

Effect of sodium lauryl sulphate (SLS) on nickel electrowinning from acidic sulphate solutions

The effect of sodiumlaurylsulphate (SLS) on the cathodic current efficiency (CE), surface morphology, crystallographic orientations and polarization behaviour of the stainless steel cathode during nickel electrowinning from acidic sulphate solutions was investigated. The results indicated that SLS did not have a significant effect on the cathodic current efficiency. However, noticeable changes in the surface morphology and deposit quality were observed. Cyclic and linear sweep voltammetric studies revealed that an increase in SLS concentration from 2 to 40 mg dm− 3 increased the cathodic potential and shifted the nucleation overpotential (NOP) towards more negative values which was also reflected in the decrease in the rate of electron transfer i.e. i0 values obtained on both the stainless steel and nickel substrates. The presence of SLS did not change the fcc structure of the electrodeposited nickel but affected the peak intensities of the various crystal planes

Effect of pyridine and picolines on the electrocrystallisation of nickel from sulphate solutions

The effect of pyridine, 2-picoline and 4-picoline on current efficiency (CE), deposit morphology, crystallographic orientation and polarization of the cathode during electrodeposition of nickel from acidic sulphate solutions containing boric acid were investigated. These additives were found to have no significant effect on current efficiency. However, the nickel deposits obtained were smoother, more compact and more leveled in case of picolines than with pyridine. The (200) plane was the most preferred plane and was not affected by the presence of these additives in the electrolyte. Each of the additives polarized the cathode with the order of polarization being 4-picoline>2-picoline>pyridine. The quality of the deposit was improved by these additives in the order 4-methyl pyridine>2-methyl pyridine>pyridine