Validity of Digital and Rapid Prototyped Orthodontic Study Models

The Effect of the Electric Current Intensity and its Exposure Duration on the Germination Ratio and some Morphological Qualities of the Albizia Seedlings Albizia lebbek L. Benth

“…The research was carried out in the wooden canopy of the Department of Forestry (Faculty of Agriculture and Forestry) University of Mosul for the period from the beginning of April to October, 2019, where the seeds used in the study were cleaned after extracting them from the pods collected from the trees of the developing Albizia in the city of Mosul and the healthy and homogeneous seeds were selected by size before their parameter and the seeds were divided into groups according to the transactions and were wrapped in punched paper of cellophane and the seeds were placed in a glass basin dimensions (25 * 30 * 110) cm and contains a device It consists of two carbon electrodes and is connected to two conductive wires of electric current inside a basin to increase the contact area between the brine and the carbon poles [13], and the use of the Clamp meter to adjust the intensity of the current entering the device and the use of an eraser to measure the degree of H of the solution to make sure that the degree of H of the solution is less than (30° C) by using ice continuously to reduce the heat of the solution and maintain the vitality of the seeds [14]. The wires are connected to a switch with a constant voltage of 220 V and the wire is passed to the Clamp meter device to adjust the intensity of the electric current in the brine solution by bringing the poles closer to each other where the amperes or the dimensions of the poles increase to reduce the amperes, and the seeds were planted at the rate of three seeds per bag of black polyethylene bags where the processes of service, watering, hogging and maintenance continued until the completion of the experiment and the percentage of germination was followed up and recorded a month after the seeds and at the end of the experiment was taken The results of the rest of the studied qualities, the study included two factors8…”

“…The significant increase obtained from the treatment of seeds with an intensity of 9 amp is similar to the effect of electromagnetic radiation when it passes through the cell that causes electronic disturbances. Moreover, it has effects on some molecules that produce free chemical roots active and, to a large extent, cause an increase in hydrogen peroxide (H 2 O 2 ,) which has a major and important role in increasing the growth of the plant by dissolving salts as well as the response of the cell wall to growth and increasing the absorption and transport of nutrients through plant tissues [14]. The increase in wet and dry weight of the vegetative total of Albizia seedlings of pec growing seeds exposed to electric current compared to the comparison treatment is due to the increase in the growth of seedlings.…”

Effect of Adding Mineral Fertilizer NPK and Biochar on the Potential Buffering Capacity of Potassium and its Relation to Corn Yield in Calcareous Soil in Northern Iraq

“…The high content of calcium carbonate in Iraqi soils may lead to hindering the absorption of potassium due to the presence of calcium ions in high quantities in the soil solution. Iraqi soils are also characterized by their high content of clay minerals 2:1, which work on the stabilization of high quantities of available potassium and convert it into a slow available form [3].The use of traditional standards in evaluating the availability of potassium did not achieve the purpose of its use in many cases [4], so the researchers tended to use thermodynamic standards that are considered A sound input in assessing the availability of potassium in the soil [5]. [6] indicated the success of evaluating potassium availability in many Iraqi soils using thermodynamic criteria that included ionic activity, potassium activity coefficient, intensity-capacity relations (Q/I), free energy, and potassium regulatory capacity.…”