scholarly journals On a new Iron carbonyl, and on the action of light and of heat on the Iron carbonyls

1907 ◽  
Vol 79 (527) ◽  
pp. 66-80 ◽  
Keyword(s):  
Liquid Iron ◽  
Carbonyl Iron ◽  
Chemical Properties ◽  
Iron Pentacarbonyl ◽  
Iron Carbonyl ◽  
Physical And Chemical Properties ◽  
Solid Compound ◽  
Iron Carbonyls ◽  
Physical And Chemical ◽  
And Chemical Properties

This paper contains an account of the results of the continuation of the experiments on the action of light on the liquid iron carbonyl (iron penta-carbonyl) and the action of heat on the resulting solid compound, diferro-nonacarbonyl, Fe 2 (CO) 9 , which were described in a paper on “The Physical and Chemical Properties of Iron Carbonyl,” communicated to the Society in 1905. The experiments on the action of light on iron pentacarbonyl under varied conditions have resulted in new and interesting observations, and approximate measurements of the velocity of the reaction induced by light have been made and compared with that of other reactions induced by light.

scholarly journals The physical and chemical properties of iron carbonyl

1905 ◽  
Vol 76 (513) ◽  
pp. 558-577 ◽  
Keyword(s):  
Carbon Monoxide ◽  
Chemical Properties ◽  
Iron Pentacarbonyl ◽  
Iron Carbonyl ◽  
Physical And Chemical Properties ◽  
Analogous Compound ◽  
Physical And Chemical ◽  
And Chemical Properties

This paper contains an account, as promised, of a study of the physical and chemical properties of iron carbonyl, similar to that already communicated to the Society on the properties of the analogous compound of nickel,* to which this forms the sequel. The combination of iron and carbon monoxide was discovered by Drs. Mond and Quincke in 1891, and the resulting compound called iron pentacarbonyl was isolated (as a coloured liquid), and examined by Drs. Mond and Langer in the course of the same year.

Statistical criteria of stellar population types

1966 ◽  
Vol 24 ◽  
pp. 101-110
Author(s):  
W. Iwanowska
Keyword(s):  
Stellar Population ◽  
Chemical Properties ◽  
Spectrophotometric Study ◽  
Physical And Chemical Properties ◽  
Population Type ◽  
The Galaxy ◽  
Distribution Parameters ◽  
Physical And Chemical ◽  
Statistical Criteria ◽  
And Chemical Properties

In connection with the spectrophotometric study of population-type characteristics of various kinds of stars, a statistical analysis of kinematical and distribution parameters of the same stars is performed at the Toruń Observatory. This has a twofold purpose: first, to provide a practical guide in selecting stars for observing programmes, second, to contribute to the understanding of relations existing between the physical and chemical properties of stars and their kinematics and distribution in the Galaxy.

Response of corn (Zea mays L.) to various organic-based fertilizers in marginal upland of Sta. Rita, Samar

2017 ◽  
pp. 31-43
Author(s):  
Berta Ratilla ◽  
Loreme Cagande ◽  
Othello Capuno
Keyword(s):  
Block Design ◽  
Management Strategies ◽  
Chemical Properties ◽  
Organic Fertilizers ◽  
Growth And Yield ◽  
Physical And Chemical Properties ◽  
Total N ◽  
Randomized Complete Block Design ◽  
Physical And Chemical ◽  
And Chemical Properties

Organic farming is one of the management strategies that improve productivity of marginal uplands. The study aimed to: (1) evaluate effects of various organic-based fertilizers on the growth and yield of corn; (2) determine the appropriate combination for optimum yield; and (3) assess changes on the soil physical and chemical properties. Experiment was laid out in Randomized Complete Block Design, with 3 replications and 7 treatments, namely; T0=(0-0-0); T1=1t ha-1 Evans + 45-30-30kg N, P2O5, K2O ha-1; T2=t ha-1 Wellgrow + 45-30-30kg N, P2O5, K2O ha-1; T3=15t ha-1 chicken dung; T4=10t ha-1 chicken dung + 45-30-30kg N, P2O5, K2O ha-1; T5=15t ha-1 Vermicast; and T6=10t ha-1 Vermicast + 45-30-30kg N, P2O5, K2O ha-1. Application of organic-based fertilizers with or without inorganic fertilizers promoted growth of corn than the control. But due to high infestation of corn silk beetle(Monolepta bifasciata Horns), its grain yield was greatly affected. In the second cropping, except for Evans, any of these fertilizers applied alone or combined with 45-30-30kg N, P2O5, K2O ha-1 appeared appropriate in increasing corn earyield. Soil physical and chemical properties changed with addition of organic fertilizers. While bulk density decreased irrespective of treatments, pH, total N, available P and exchangeable K generally increased more with chicken dung application.

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