The Effect of Magnetic Field on Crystallization and some Properties of Silver Azide Crystals

2018 ◽  
Vol 938 ◽  
pp. 18-26
Author(s):  
A.P. Rodzevich ◽  
L.V. Kuzmina ◽  
E.G. Gazenaur ◽  
E.V. Sugatov ◽  
V.I. Krasheninin

The paper is focused on the effect of homogenous and inhomogeneous magnetic fields on crystallization, and some physical and chemical properties of silver azide (morphology, electric resistance, defect structure, reactivity) as well. The authors put forward an efficient procedure for growing crystals with specified sizes, reactivity and minimized impurities.

2021 ◽  
Vol 2 (01) ◽  
pp. 8-12
Author(s):  
Mila Kusumawardani ◽  
Zulfa Anggraini Kusumaningtyas ◽  
Farida Arinie ◽  
Ridho hendra yoga perdana

In the cultivation of teak plants often have problems because teak seeds have a thick and hard skin or impermiabel (difficult to penetrate) to water and gas so as to slow germination. The magnetic field can increase the growth rate in inactive seed seeds because the magnetic field affects the physical and chemical properties of water as a germination medium. Water exposed by the magnetic field can be absorbed easily with tissues in the seeds, thus shortening seed dormancy and increasing the percentage of seed germination. This study aims to understand the growth process of dormancy seed germination, To know the influence of magnetic fields on the growth of teak seed seeds, as a solution to the problem of seed dormancy in teak seed seeds. Therefore, the method used in this study is to provide exposure to teak seeds and make tools for monitoring teak growth in real time with the parameters of planting media moisture (to see the absorption of water) and high seeds (for the growth of teak seeds), so that used YL69 sensor for soil moisture and sharp infrared sensor gp2y0a02yk0f for high plants.


2014 ◽  
Vol 1675 ◽  
pp. 113-119 ◽  
Author(s):  
S.Sujatha Lekshmy ◽  
V.S Anitha ◽  
K. Joy

ABSTRACTMagnetic nanoparticles have drawn much attention due to their potential in magnetic recording as well as many biological and medical applications such as magnetic separation, hyperthermia treatment, magnetic resonance contrast enhancement and drug delivery. The magnetic fields generated by these nanoparticles can be used for diagnostics in Magnetic Resonance Imaging (MRI) etc. Manganese doped tin dioxide (SnO2:Mn) possess interesting physical and chemical properties. The physical and chemical properties of the particles themselves like the size, shape, crystallinity and composition, will control the magnetic properties and response of the particles to magnetic fields. Our work is rooted to control the properties of the particles as well as tailor their magnetic properties for specific applications. In this study, SnO2: Mn films with different Mn doping concentrations (0-3 mol%) were deposited on the glass substrates by sol-gel dip coating technique. XRD patterns shows tetragonal structure for all the SnO2:Mn films and crystallite size decreased as Mn doping concentration increased from 0 - 3 mol%. The magnetic property shows that pure SnO2 film is diamagnetic and 1- 3 mol% SnO2:Mn films posses room temperature ferromagnetism. The optical properties of the films revealed that transmittance of the films decreased with increase in Mn doping concentration. The optical energy band gap values (3.55 eV-3.71 eV) increased with the increase in Mn doping concentrations. Such SnO2:Mn films with structural, optical and magnetic properties can be used as dilute magnetic semiconductors.


1966 ◽  
Vol 24 ◽  
pp. 101-110
Author(s):  
W. Iwanowska

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.


2017 ◽  
pp. 31-43
Author(s):  
Berta Ratilla ◽  
Loreme Cagande ◽  
Othello Capuno

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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