CECRI Papers 1983
Sl.No.
Author(s)
Title
Journal Name
Volume
Issue
Year
1
 Rengaswamy K V, Central Electrochemical Research Institute April     1983
2
 Chakravarthy C, Primary Zinc Air Cells : Developmental Work At Cecri Karaikudi Batteries Bull
1
1
 1983
3
 Chakravarthy C, Zinc -Air Secondary Cells Batteries Bull
1
2
 1983
4
 Dakshinamurthy K, R&D On Lead Acid Battery At Cecri Batteries Bull
1
2
 1983
5
 Gangadharan R, Non-Aqueous Lithium Batteries Batteries Bull
1
1
 1983
6
 Kuppuswami J, Sundaram V, Suryanarayana C V Solid Electrolyte Batteries Batteries Bull
1
1
 1983
7
 Mathur P B, Silver Oxide -Zinc Rechargeable Batteries Batteries Bull
1
2
 1983
8
 Mathur P B, Water Activated Magnesium Batteries And Silver Oxide-Zinc Reserve batteries Batteries Bull
1
1
 1983
9
 Potdar M G, R& D Activities In Primary Battery System Batteries Bull
1
1
 1983
10
 Venkatesan V K, S+N280tudies On Fuel Cells Batteries Bull
1
2
 1983
11
 Vijayavalli R, Vasudeva Rao P V Nickel -Cadmium Batteries Batteries Bull
1
2
 1983
12
 Visvanathan S, Electrolytic Manganese Dioxide : A Status Report Batteries Bull
1
1
 1983
13
 Arghode R, Rajagopalan K S Metallic Glasses : A Corrosion Resistant Material Corros Bull
3
1
 1983
14
 Gurujanardhanan G, Devaraj G, Shenoi B A Aluminium -Zinc Alloy Hot Dip Coating Corros Bull
3
6
 1983
15
 Guruviah S, Rajagopalan K S Metallic Coatings For Corrosion Protection Corros Bull
3
6
 1983
16
 John S, Anodic Oxitation Of Aluminium : Anodising Characteristics Of Aluminium Alloys Corros Bull
3
5
 1983
17
 John S, Electrolytic And Chemical polishing Of Aluminium : Part V Corros Bull
3
4
 1983
18
 John S, Sulphuric Acid Anodising Process Corros Bull
3
6
 1983
19
 Malathy , Pushpavanam, Vidyalakshmi , Raman , Shobha, Jayakrishnan, Shenoi B A Nickel-Iron Alloy Plating Corros Bull
3
6
 1983
20
 Marikkannu C, Corrosion Resistant Metals And Alloys Corros Bull
3
6
 1983
21
 Marikkannu C, Corrosion Resistant Metals And Alloys : II > Ferrous Metals And Alloys Corros Bull
3
3
 1983
22
 Marikkannu C, Corrosion Resistant Metals And Alloys : III . Stainless Steel Corros Bull
3
4
 1983
23
 Marikkannu C, Corrosion Resistant Metals And Alloys : Super Alloys Corros Bull
3
5
 1983
24
 Marikkannu C, Electrochemical Methods Of Protection : Anodic Prodection Corros Bull
3
1
 1983
25
 Mukherjee D, Arghode R, Rajagopal C, Rajagopalan K S Chromising Of Steel And Its Industrial Applications Corros Bull
3
6
 1983
26
 Mukherjee D, Arghode R, Rajagopal C, Guruviah S, Rajagopalan K S, Metallic Coating By Diffusion For Corrosion Protection Corros Bull
3
5
 1983
27
 Muralidharan V S, Thangavel K Napthenic Acids And Their Corrosion Corros Bull
3
6
 1983
28
 Natarajan S R, Measurement Of Thickness Of Electrodeposits Corros Bull
3
1
 1983
29
 Parthasaradhy N V, Basic Aspects Of Electropalting : Deposition Potential Corros Bull
3
4
 1983
30
 Parthasaradhy N V, Basic Aspects Of Electroplating : Anodes In Electroplating Corros Bull
3
6
 1983
31
 Parthasaradhy N V, Basic Aspects Of Electroplating : Electricity For Electroplating Corros Bull
3
1
 1983
32
 Parthasaradhy N V, Basic Aspects Of Electroplating : Electrode Potential Corros Bull
3
3
 1983
33
 Parthasaradhy N V, Basic Aspects Of Electroplating : Electrolytes And Electrolysis Corros Bull
3
2
 1983
34
 Parthasaradhy N V, Basic Aspects Of Electroplating : Hydrogen Ion And Hydrogen Overvoltage Corros Bull
3
5
 1983
35
 Rajagopal C, Rajagopalan K S R&D Work In Cecri On Conversion Coatings Corros Bull
3
3
 1983
36
 Rajagopalan K S, Viswanathan R Cost Of Corrosion In The Soaps And Cosmetics Industry Corros Bull
3
5
 1983
37
 Rajagopalan K S, Krithivasan N, Sundaram M Environmental Factors Influencing Corrosion : Part II. Corrosion By Natural Water , Sea Water , Chemicals And Soils Corros Bull
3
4
 1983
38
 Shanmugam N V, John S Electroforming Corros Bull
3
4
 1983
39
 Shenoi B A, Anodic Oxidation Of Aluminium : Types Of Anodising Processes And Their Application Corros Bull
3
1
 1983
40
 Shenoi B A, Pretreatement Processes Corros Bull
3
3
 1983
41
 Srividya, Rajagopalan C Ultrasonic Thickness Measurements Corros Bull
3
1
 1983
42
 Subramanian R, Electropolishing And Chemical Polishing Of Metals : Part II Corros Bull
3
4
 1983
43
 Subramanian R, Electropolishing And Chemical Polishing Of Metals : Part II Corros Bull
3
3
 1983
44
 Venkatachari G, Mechanism Of Corrosion Corros Bull
3
6
 1983
45
 Venkatachari G, Mechanism Of Corrosion Corros Bull
3
1
 1983
46
 Venkatachari G, Mechanism Of Corrosion : IV . Metals In Sulphuric Acid Corros Bull
3
4
 1983
47
 Venkatachari G, Mechanism Of Corrosion : Metals In Hydrochloric Acid Corros Bull
3
5
 1983
48
 Venkatachari G, Oxygen Reduction Reaction Corros Bull
3
3
 1983
49
 Parthasaradhy N V, Electrode Potential Corros Bull
3
3
 1983
50
 Palaniswamy N , Arghode R, Iyer S V k Energy Sources For Impressed Current Cathodic Protection Corros Maint
6
4
 1983
51
 Rajagopalan K S, Krithivasan N, Rajagopal C Electrochemical Methods Of Phosphating Corros Maint
6
4
 1983
52
 Ambalavanan S, Hariharan M, Rajagopalan K S Coating On Graphite Electrodes Using Flame Spray , Electric Arc And Plasma Techniques Electrochem Bull
1
4
 1983
53
 Anantharaman P N, Noel M Electrochemical Synthesis Of Dye Intermediates Using Ti4+/Ti3+ Redox System Electrochem Bull
1
4
 1983
54
 Anantharaman P N, Electrodialysis In The Desalination Of Sea Water Electrochem Bull
1
3
 1983
55
 Anantharaman P N, Udupa H V K Preparation Of Sulphanilic Acid Starting From Nitrobenzene Electrochem Bull
1
3
 1983
56
 Arghode R, Surface Examination Of Coatings Electrochem Bull
1
1
 1983
57
 Kanakam , Srinivasan , Sivasubramanian K, Rajagopalan K S Electrolytically Produced Solvated Electrons And Their Use In Synthetic Organic Chemistry : A Status Report Electrochem Bull
1
2
 1983
58
 Krishnamurthy S, Membrane Cell Electrochem Bull
1
1
 1983
59
 Krishnan V, Muthukumara A, Chandrasekaran M Electrochemical Preparation Of o-Amino Benzyl Alcohol Electrochem Bull
1
3
 1983
60
 Krishnan V, Permselective Cation exchange Membranes Electrochem Bull
1
2
 1983
61
 Narasimham K C, Graphite Anode And Its Status In Aqueous Electrolysis Electrochem Bull
1
3
 1983
62
 Narasimham K C, Research On Inorganic Electrochemicals At Cecri Electrochem Bull
1
1
 1983
63
 Noel M, Anantharaman P N, Udupa H V K Preparation Of Titanic And Titanyl Sulphate Solutions Electrochem Bull
1
3
 1983
64
 Noel M, Anantharaman P N Status Of Chemically Modified Electrode Electrochem Bull
1
2
 1983
65
 Pichumani S, Trivedi D C, Krishnan V, Udupa K S, Rajagopalan K S, Conducting Polymers Synthesis And Characterisation Electrochem Bull
1
4
 1983
66
 Pushpavanam S, Raghavendran N S Potassium Permanganate Electrochem Bull
1
3
 1983
67
 Pushpavanam S, Narasimham K C Solid Polymer Electrolyte (spe) Cell For Chlor-Alkali Electrochem Bull
1
1
 1983
68
 Sridhar P, Narasimham K C Non-Noble Electrodes Electrochem Bull
1
3
 1983
69
 Thirunavukkarasu P, Thangavelu S, Udupa H V K Electrochemical Preparation Of Metanilic Acid Electrochem Bull
1
3
 1983
70
 Trivedi D C, Udupa K S Anodic Oxidation Of Organic Compounds At Base Metal Oxides Electrochem Bull
1
2
 1983
71
 Trivedi D C, Krishnan V, Udupa K S, Rajagopalan K S Conducting Polymers : A Synthetic Metal Electrochem Bull
1
2
 1983
72
 Trivedi D C, Udupa K S Synthesis Of Camphor Electrochem Bull
1
4
 1983
73
 Trivedi D C, Udupa K S Trivalent Cobalt : Preparation And Analysis Electrochem Bull
1
3
 1983
74
 Visvanathan S, Characterisation Of Anodes And Cathodes Electrochem Bull
1
1
 1983
75
 Muralidharan V S, Thangavel K, Rajagopalan K S Triangular Potential Sweep Voltammetric Studies On Pure Tin In Concentrated Sodium Hydroxide Solutions Electrochim Acta
28
11
 1983
76
 Noel M, Anantharaman P N Electron TransferàGlassy Carbon Electrode : I. Linear Sweep And Cyclic Voltammetry Studies On Ti(IV) Oxalate - Nh20H System In Oxalic Acid Media Electrochim Acta
28
4
 1983
77
 Abdul Kader J A M, Fluidised Bed electrolysis For Metal Recovery : A Status Report Electromet Bull
1
2
 1983
78
 Desikan P S, Fused Salt Electrometallurgy Electromet Bull
1
2
 1983
79
 Kamaludeen M, Renganathan N G, Sundaram M Sodium Metal By Fused Salt Electrolysis : Part I Electromet Bull
1
1
 1983
80
 Srinivasan K S, Augustin C O Molten Salt Electrorefining Electromet Bull
1
1
 1983
81
 Srinivasan R, Electrometallurgy (Aqueous) : I. Electrorefining Electromet Bull
1
1
 1983
82
 Srinivasan R, Electrometallurgy (Aqueous) : II. Electrorefining Electromet Bull
1
2
 1983
83
 Srinivasan R, R&D On Hydroelectrometallurgy : Contributions Of Cecri Electromet Bull
1
1
 1983
84
 Ayyaswami N, Krishnan V Electroreduction Of Cyclohexanone Oxime J Appl Electrochem
13
6
 1983
85
 Prabhakara Rao G, Varadharaj A Improved Anodic Stripping Voltammetry Through Insitu Sodium Amalgamation J Electroanal Chem Interfacial Electrochem
145
1
 1983
86
 Ayyaswami N, Krishnan V Electroreduction Of p-Tolunitrile At Deposited Palladium And Deposited Nickel Black Cathodes J Electrochem Soc India
32
4
 1983
87
 Gomathi H, Lalitha , Balasubramanian , Narasimham K C, Udupa H V K, Electrolytic Production Of Lead dioxide Power From Nitrate Bath J Electrochem Soc India
32
2
 1983
88
 Krishnan V, Muthukumara A Electrochemical Reduction Of Adiponitrile To Hexamethylenediamine J Electrochem Soc India
32
3
 1983
89
 Krishnan V, Muthukumara A Studies On The Preparation Of 2-Phenyl Ethylamine From Benzyl Cyanide Using Iron And Cobalt Cathodes J Electrochem Soc India
32
4
 1983
90
 Noel M, Anantharaman P N, Udupa H V K Electro - Reduction Of p-Nitrophenol To p-Aminophenol Using Ti3+/Ti4+ Redox System J Electrochem Soc India
32
2
 1983
91
 Rajagopalan K S, Krithivasan N, Thangathirupathy S, Kochu Janaki M E Determination Of Corrosion Rates In High Pure Water Employing Coulostatic Method J Electrochem Soc India
32
1
 1983
92
 Chakravarthy C, Udupa H V K On The Suppression Of Self Discharge Of The Zinc Electrodes On Zinc Air Other Related Battery Systems J Power Sources
10
2
 1983
93
 Adaikkalam P, Srinivasan R Regeneration Of Chromic Acid Etchant With Simultaneous Recovery Of Metals Using Ion Exchange Membranes Know Your Prod
2
10
 1983
94
 Ayyappa Raju, Balasubramanian V, John S, Shenoi B A Some Of The Practical Aspects Of Electrolytic Colouring Of Anodised Aluminium Know Your Prod
2
10
 1983
95
 Devaraj G, Veerashanmugamani M, Ramesh Bapu G N K, Nayak N U, Ayyappa , Raju J, Balasubramanian V Continuous electro-Coating On Wires Know Your Prod
2
10
 1983
96
 John S, Shanmugam N V, Selvam M, Srinivasan K N, Shenoi B A, Low Concentrated Zincating Solution For Plating On Aluminium Know Your Prod
2
10
 1983
97
 Malathy , Pushpavanam, Vidyalakshmi , Raman , Shobha, Jayakrishnan, Shenoi B A Addition Agent For Bright Iron -Zinc Alloy Deposition Know Your Prod
2
10
 1983
98
 Malathy , Pushpavanam, Vidyalakshmi , Raman , Shenoi B A, Electrodeposition Of Bright Speculum Alloy Know Your Prod
2
10
 1983
99
 Parthasaradhy N V, Chemical And Electrochemical Stripping Of Defective Electroplated Coatings Know Your Prod
2
10
 1983
100
 Shanmugam N V, John S, Selvam M, Srinivasan K N, Shenoi B A, Study Of Sealing Anodised Aluminium At Room Temparature Know Your Prod
2
10
 1983
101
 Srinivasan K N, Selvam M, Shanmugam N V, John S, Shenoi B A, Chemical Oxidation Of Aluminium And Its Alloys For Decorative Applications Know Your Prod
2
10
 1983
102
 Subramanian R, Chandrasekaran S, Rajagopalan K S Pattern Plating On Polythene By Photochemical Desensitisation Techniques Know Your Prod
2
10
 1983
103
 John S, Selvam M, Shanmugam N V, Srinivasan K N, Shenoi B A, Low Current Density Black Chrome electrolyte For Photothermal Conversion Of Solar Energy Metal Finish
81
6
 1983
104
 Vidyalakshmi, Raman, Malathy, Pushpavanam , Shobha, Jayakrishnan, Shenoi B A Bath For The Deposition Of Bright Zinc Nickel Alloy Metal Finish
81
5
 1983
105
 Subramanian G, Navin Chandra, Prabhakara Rao G Halide Ion-Selective Electrodes Metal Finish
81
7
 1983
106
 Krishnan RM, Sriveeraraghavan S, Natarajan S R, Rajagopalan K S DevelopmentS In Decorative Chromium Plating And Related Aspects Prepaint Third Nat Conf Electroplat
November
   1983
107
 Mukherjee D, Rajagopal C, Arghode R, Chandran K, Guruviah S, Rajagopalan K S Studies On Chromium Diffusion Coatings On Mild Steel Surface For Corrosion Prodection Prepaint Third Nat Conf Electroplat
November
   1983
108
 Venkatachari G, Basics Of Corrosion Monitoring For Petrochemical, Chemical And Allied Industries Prepaint Workshop Corros Control Petrochem Allied Baro
July
   1983
109
 Rajagopalan K S, Guruviah S, Chandrasekaran V Corrosion Protection By Organic Zinc Rich Coating Preprint Nat Conf Zinc Rich Coat Corros Protect Delh
November
   1983
110
 Rajagopalan K S, Mechanism Of Protection Against Corrosion By Zinc Rich Paints Preprint Nat Conf Zinc Rich Coat Corros Protect Delh
November
   1983
111
 Rajagopalan K S, Guruviah S, Sundaram M Performance Characteristics Of Zinc Sodium Silicate Coatings Preprint Nat Conf Zinc Rich Coat Corros Protect Delh
November
   1983
112
 Rajagopalan K S, Guruviah S, Sundaram M Zinc Ethyl Silicate Coatings For Corrosion Prevention Preprint Nat Conf Zinc Rich Coat Corros Protect Delh
November
   1983
113
 Chakravarthy C, Gnanasekaran K S A, Rajagopalan K S Electrochemical And Electrical Properties Of Plants : Part I Preprint Symp Adv Electrochem Plant Growth Kara
September
   1983
114
 Gnanasekaran K S A, Chakravarthy C, Rajagopalan K S Electrical And Electrochemical Behaviour Of The Soil Preprint Symp Adv Electrochem Plant Growth Kara
September
   1983
115
 Sriveeraraghavan S, Krishnan RM, Natarajan S R Immersion -Stripping Of Nickel Electrodeposits On Steel Preprint Third Nat conf Electroplat
November
   1983
116
 Balakrishnan K, Electrochemical Protection Preprint Workshop Corros Control Petrochem Allied Baro
July
   1983
117
 Rajagopalan K S, Kinetics And Mechanism Of Corrosion Preprint Workshop Corros Control Petrochem Allied Baro
July
   1983
118
 Arul Raj I, Indira C J, Amrit Phale S S, Manickam AR, Chandrasekaran R, Pattabiraman r, Venkateswara Rao K, Venkatesan V K, , , , , Studies On Hydrogen And Oxigen Gas Diffusion Electrode For Use In Alkaline Temperature Hydrogen Oxigen Fuel Cells Proc Fourth Nat Conf Power Sources Delh
April
   1983
119
 Mary, Juliana , Chockalingam, Nagaraja Rao K, Rangarajan N, Suryanarayana C V Effect Of Annealing Cds Sintered Layers Useful For Solar Cells Proc Fourth Nat Conf Power Sources Delh
April
   1983
120
 Vasudevs Rao p v, New Directions In The Lead Acid battery Reserch And Development : Part I Proc Fourth Nat Conf Power Sources Delh
April
   1983
121
 Venkateswara Rao K , Venkatesan V K Studies On Oxygen reduction On Silver dispersed On Lanthanum Barium Manganate In Alkaline Medium Proc Fourth Nat Conf Power Sources Delh
April
   1983
122
 Venugopalan K, Nasicon And Sodium Sulphur Batteries Proc Fourth Nat Conf Power Sources Delh
April
   1983
123
 Trivedi D C , Udupa K S, Udupa H V K Joint Indo Soviet Symposium On Recent Trends In Electrochemical Science And Technology Proc Indian Nat Sci Acad     1983
124
 John S, Srinivasan K N, Selvam M, Shanmugam N V, Shenoi B A, Electropolished Aluminium As Concentrator For Solar Energy Utilization Proc Nat Solar Energy Conv Baro     1983
125
 Shanmugam N V, John S, Selvam M, Srinivasan K N, Shenoi B A, Some Practical Exdperiences On Selective Black Nickel Plating Of Solar Collectors Proc Nat Solar Energy Conv Baro     1983
126
 Belavadi J, Rajagopalan N, Desikan P S, Utpal Sen Comparative Studies Of The Phase Behaviours Of Multi Component Chloride Salt Systems Related To Mg Cell Electrolyte Proc Symp Adv Electrometallurgy Kara     1983
127
 Desikan P S, Srinivasan K S, Selvakesavan A, Kannan G N, Sukumaran SM, Subramanian P, Srinivasan L K, Rajagopalan N, Augustin C O, Selvin Devasahayam T, Dandapani K S, Srikantan S, Studies On The Improvement Of Energy Efficiencies And Space - Time Yields In Primary Magnesium Production Proc Symp Adv Electrometallurgy Kara     1983
128
 Ramachandran P, Balakrishnan K, Srinivasan R Preconditioning Of The Lead Alloy Anodes For Use In Electrowinning Operations Proc Symp Adv Electrometallurgy Kara     1983
129
 Sathaiyan N, Abdul Kader J A M, Srinivasan R Dissolution And Separation Of Copper In Silver Refining Proc Symp Adv Electrometallurgy Kara     1983
130
 Srinivasan K S, Augustin C O, Dandapani K S, Desikan P S Studies On Electrorefining Of Magnesium Fused Salt Media Proc Symp Adv Electrometallurgy Kara     1983
131
 Venkateswaran K V, Ramachandran P, Adaikkalam P, Srinivasan R Electroleaching Of Chalcopyrite : I. Preparation Of Electrodes Proc Symp Adv Electrometallurgy Kara     1983
132
 Venugopalan K, Kamaludeen M, Renganathan N G Preparation Of Lithium By Fused Salt Electrolytes Proc Symp Adv Electrometallurgy Kara     1983
133
 Rao K V, Roy C B Electrocatalytic Oxidation Of Methonol, Ethonol And Isopropenol On Pt-Ru Electrode Proc Symp Adv Energy Storage Conversion Kara
January
   1983
134
 Amrit Phale S S, Arul Raj I, Muthu K, Manickam AR, Chandrasekaran R, Indira, Alwar, Ramanujam R, Pattabiraman r, Venkateswara Rao K, Gnanasekaran K S A, Venkatesan V K, , , Studies On Performance Characteristics Of Low Temperature Alkaline HytrogenOxygen Fuel Cell Modules Proc Symp Adv Energy Storage Conversion Kara
January
   1983
135
 Balakrishnan P G, Mani n, Rajaraman J, Janakiraman R, Devasahayam M, Ravi , Dakshinamurthy K, Vasudeva Rao P V, Udupa HV K, , , , Development Of 96V/300 AH Advanced Lead Acid Battery For Electric Vehicle Proc Symp Adv Energy Storage Conversion Kara
January
   1983
136
 Gangadharan R, Studies Of The Kinetics Of The A1/A1+3 Electrode In Propylene Carbonate By Impedance Method Proc Symp Adv Energy Storage Conversion Kara
January
   1983
137
 Prasad K V, Namboodri P N N, Gangadharan R Studies On The Discharacteristics Of Li/Mn02 Button Cells Proc Symp Adv Energy Storage Conversion Kara
January
   1983
138
 Veluchamy A, Venkatakrishnan N, Mathur P B Some Basic Investigations On The Performance Characteristics Of Magnesium Manganese Dioxide Cells Proc Symp Adv Energy Storage Conversion Kara
January
   1983
139
 Venugopalan K, Kamaludeen M, Renganathan n G Preparation Of Beta Alumina Tube By Electrophoretic Deposition Proc Symp Adv Energy Storage Conversion Kara
January
   1983
140
 Balakrishnan K, Standards For Metal Finishing Industries Quality Assurance J
2
1
 1983
141
 John S, Shenoi B A Quality Control Of Anodised Aluminium Quality Assurance J
21
1
 1983
142
 Rajagopalan K S, Some Quality Control Aspects In Conversion Coating Processes Quality Assurance J
2
1
 1983
143
 Balasubramanian V, John S, Shenoi B A Influence Of Addition Agents For A C Anodising In Sulphuric Acid Electrolyte Surface Technol
19
4
 1983
144
 John S, Shanmugam N V, Selvam M, Shenoi B A Blacking Of Electroless Nickel Deposits For Solar Energy Applications Surface Technol
20
4
 1983
145
 Gomathi H, Subramanian G , Navin Chandra , Prabhakara Rao G Solid -State Halide Ion-Selective Electrodes : Studies Of Quaternary Ammonium Halide Solutions & Determination Of Surfactants Talanta
30
11
 1983
146
 Lakshmanan A S, Suryanarayana C V Photoelectrochemical Energy Conversion Trans Saest
18
4
 1983
147
 Rajakopalan K S, Some New Directions In Electrochemical Science And Technology Trans saest
18
4
 1983
148
 Gomathi H, Narasimham K C, Udupa H V K Electrolytic Preparation Of tetrachloroauric Acid Trihydrate Trans Saest
18
2
 1983
149
 Noel M, Anantharaman P N, Udupa H V K Electrolytic Reduction Of 2,4 -Dinitrophenol To 2,4-Diaminophenolo Sulphate (Diamol) Using Ti4+/Ti3+ Redox System Trans Saest
17
4
 1983
150
 Prabhakara Rao G, Pollution Monitoring In Electrochemical And Metal Recovery Industries : A State Of Art Report Workshop Environ Issues Metallurgical Ind Bhub     1983