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R. N. Banerjee ¹, J. Singh ², A. K. Basu ³

Affiliations
1 Dept. of Haematology and Nuclear Medicine, Safdarjang Hospital, New Delhi, IN
2 Dept. of Haematology & Nuclear Medicine, Safdarjang Hospital, New Delhi, IN
3 Deparhnent of Biochemistry, All India Institute of Medical Sciences, New Delhi, IN

Abstract

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A. K. Basu ¹, S. Dutta ¹

Affiliations
1 Department of Chemical Technology, University of Calcutta, Kolkata-700 009, IN

Abstract

Monolauryl and monostearyl phosphoric acid esters were synthesized by phosphorylation of the corresponding long chain fatty alcohols which were subsequently neutralized with mono-, di- and tri-ethanolamines. Monoalkyl nature of phosphate derivatives was ascertained by evaluating phosphorus contents. All the phosphate derivatives displayed appreciable lowering of surface tension of water and the monoethanolamine compounds, in particular, showed lower CMC values compared to the conventional anionic surfactant, linear alkyl bezene sodium sulphonate. Monoethanolamine derivatives of lauryl and stearyl esters of phosphoric acid exhibited lower water solubility compared to diethanolamine and triethanolamine derivatives. Foam characteristics of all the compounds were, in general, poor. Monolauryl diethanolamine phosphate ester indicated superior wetting power.

Keywords

Alhyl Ethanolamine Phosphate Esters, Surface Properties, Performance Characteristics.

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A. K. Basu ¹

Affiliations
1 365, P Majumder Road, Kolkata - 700 078, IN

Abstract

A unified history of crustal evolution and tectonism in the Shield area in central and adjoining part of western India has been traced to pivotal roles played by the emplacement of granites in Bundelkhand and sinistral Strike-Slip along the Son-Narmada megafault. The Bundelkhand massif is made up largely of intrusive granites that exhibit outward forces of intrusion. Similar patterns of collinear indentations in older Precambrain rocks up to 400 km in the south and 500 km in the west of Bundelkhand mark the late Archaean to early Proterozoic massif as the source of tectonic drives in the contemporary surrounding terrains. Two syntaxes have been designated in these two directions. The Mahakoshal belt of metasediments in the Son-Narmada valley is extendable to the Pre-Bundelkhand Madia Formation in southeast Bundelkhand, the Hindoli, Aravali and Champaner Groups of western India. The above and the Sausar and Sakoli Groups, affected by the syntaxial movements are, therefore, Pre-Proterozoic in age. The Bundelkhand massif is rimmed by a belt of high gravity, arguably generated by the squeezing of the Pre-Granite Madla-MahakoshaI-Hind011 crust, supplemented by the basic residues of fractionation that generated the large batholith, and by ultrabasic rocks displaced by the development of the 40 km deep ischolar_main of the massif. This belt eventually became the site of the Bijawar-Vindhyan combined basin, that snuggly fits around the Bundelkhand massif. A small and shallow Bijawar-Vindhyan structural basin over a moderate high gravity zone occurs inside the Bundelkhand massif. This points to transgression of the Vindhyan sea during the Kalrnur period Signatures of use in thermal gradient and floundering of the granitic crust have been recognized in this place. Void generated by bimodal volcanism in the adjacent area could also have contributed to the collapse. Close relation between high gravity zone and basin limits been observed in some other parts of the region also. There are signs of thinning of static crust also in the northern marginal parts of the massif, indicating that the massif does not extend much beyond its exposed limits. There are major E-W shears in the massif, along some of which layered ultramafics, usually with magnetite have welled up Such magnetite with thin quartz veins along shear zones and showing penecontemporaneous deformation were earlier considered as BIF. The kimberlite plugs of Panna have also a similar origin, with several favourable factors combining for emplacement of the diamond-bearing plugs. The remarkable parallelism among the NE-SW trending series of shear zones in Bundelkhand, the Chambal river lineament, the Great Boundary Fault of Rajasthan, the linear narrow basins in eastern BGC and the straight margins of the Delhi basin, all 350 to 400 km long, over an E-W spread of 800 km could be the result of drags of the suspected early Proterozoic sinistral megafault along the Son-Narmada Lineament. In Bundelkhand, these drags are numerous and are occupied by very long quartz veins, not seen in any other part of the Indian Shield NW-SE trending en echelon fractures, occupied by swarms of dolerites were secondary drags of the above NE-SW primary drags. There are felsic dykes in the southern part of the massif with anomalously high MgO. The high gravity rim around Bundelkhand did not develope to the northeast of the massif due to the above southwesterly drag. Much of the structural deformation, and Malam volcanism respectively in east and west-Central Rajasthan is attributed to similar drags and their westward swipe Subduction tectonism, and the future status of CIS, SNL, GBF, Jahazpur Thrust and PDZ are considered unnecessary in the tectonic evolution of the region CIS has been redefined Evidence of growth force of coarse granite is also provided by the Malanjkhand Granite in southeastern central India, where deformation and fluid movement are localized on its dorder with the Chilpi Group, resulting in a large copper deposit. This growth force caused drags forming the acrurate Central India Shear to its north. The Sausar Group has been traced to Itarsi on the Narmada valley and the group possibly merges with the Mahakoshal Group. The Betul belt shows volcanism and basin formation over high gravity zone Manifestations of the SNL drags are staggered over time and space, without resurgence of the fault. The westerly younging of formations and there deformation in Rajasthan has been explained, and southwesterly younging in fomations and granite emplacement along the Delhi axis has been noted Syntaxia1 force to the west of Bundelkhand and the drag along Delhi east border are Time-Overlapping and together, these produced several complex structures in central Rajasthan. Greatly delayed manifestation of force of batholithic granite emplacement is a distinct possibility.

Keywords

Crustal Evolution, Bundelkhand Granite Emplacement, Syntaxis, Son-Narmada Fault Drags, Basins Over High Gravity.

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A. K. Basu

Abstract

Dear Members,

The closing ceremony of the Silver Jubilee Year of IIW held at Taj Bengal in the after-noon of 22nd April 1991 evoked tremendous response and many past Presidents, Secretaries had attended to grace the occasion. Followed by the closing ceremony, a seminar - "Welding in Steel Plants" was organised by IIW Calcutta Branch, where Mrs. Rajani Rajdhan, Director of Iron&Steel Control, was the special guest and eminent personalities like Dr. JJ Irani and Mr. MN Dastur gave inaugural speech. Undoubtedly, the seminar was a very timely event and appreciated by Ministry of Steel.

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A. K. Basu ¹

Affiliations
1 IIW, IN

Abstract

The members of the erstwhile Indian Chapter of The Welding Institute, London took initiative to form. The Indian Institute of Welding, which was incorporated on the 22nd April 1966 at Calcutta. Today, we are celebrating the grand finals of the year-long Silver Jubilee Functions of the Institute.

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A. K. Basu ¹

Affiliations
1 Indian Institute of Welding, IN

Abstract

Dear Members, I am glad to see that publication of the journal is catching up as per the time schedule. It is indeed a good job done by the Editor and Assistant Editor to recover the lost time in publishing journal. However, the cost of production of journal had increased by leaps and bounds due to increase of cost of all kinds of input materials printing costs. Members are requested to give support to the journal by way of providing more advertisement and publishing materials so that the incremental cost of journal can be accommodated.

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A. K. Basu

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Dear Members,

Returning from the annual conference of The International Institute of Welding at Hague commencing from 29th June to 6th July 1991, I have great pleasure to brief the resume of the conference covering plenary session, welding in 2000 years, important technical commissions, governing council meetings, etc.

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A. K. Basu

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Happy New Year and wish you all very successful and eventful 1991. 1 would like to bring to the notice of all members that our journal has the cover design of similar nature for a long many years and it requires a change to improve upon its visual look. The topics are also undergoing qualitative changes and I am sure, it will meet all of your expectation.

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A. K. Basu ¹

Affiliations
1 CPHERI Zonal Laboratory, IN

Abstract

It seems that industries have, in common, a broad philosophy "all forms of business and manufacturing”. From this, one is apt to realise that the term industrial waste describes discarded materials from any of these business or manufacturing operations. As each of these produces its own particular products so also they must discharge their own characteristic waste. Wastes from industries usually originate from raw material washings, intermediate products, spilled product or even in some cases of spilled raw materials and clean up. Besides industrial wastes, we have the toilet waste or community waste which individually or jointly forms a type of washing which is known as ‘"sewage” . Broadly, the wastes emanating from industrial installations and communities big or small-in liquid form are classified as “waste water”.

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A. K. Basu ¹

Affiliations
1 Central Public Health Engineering Research Institute, Calcutta Zonal Centre, IN

Abstract

Environmental disruption in Japan is a big problem owing to her post-war development of industrialisation and urbanisation. An International Symposium on Environmental Disruption sponsored by the UNESCO along with the Japanese Science Council was held in Tokyo in the month of March 1970. Following this, another International Symposium, sponsored by the Osaka Prefectural Government, on “Problems of Human Environment” at Osaka was also held. The subject matter of these symposia as well as the various visits by the author are reported in to day’s deliberations. We will try to focus on the subject based on our experience in Japan as well as various discussions We had among the delegates during those symposia.

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