ABSTRACT
Rice millers access paddy through private traders, cooperatives, individual farmers, and village agents. These methods determine the capacity utilization of the mills, costs incurred, and profitability of the rice milling business. This article aimed at determining the effect of paddy sourcing methods on the volume of rice milled by small and medium-scale rice millers in Kenya. Specifically, the study sought to determine the sourcing methods used, combinations of sourcing methods, and effects of these combinations on the volume of rice milled. A multistage sampling technique resulted to a total of 160 millers comprised of 90 and 70 small and medium-scale rice millers respectively. A multinomial endogenous switching regression (MESR) was used to determine the resultant effects of paddy sourcing methods on volume of rice milled. Results: The results show that sourcing paddy directly from individual farmers, individual farmers bringing paddy to the miller, buying from traders and sourcing through agents are the four paddy-sourcing methods used by rice millers. Factors that influence utilization of a combination of sourcing methods are age of the miller, ownership of the miller, unit price of paddy, distance from the mills, ownership of the mills, degree of competition, contract agreements, access to information and finance. The highest volume of paddy sourced was achieved using a combination of three paddy sourcing methods: buying from traders, direct sourcing from individual farmers and individual farmers bringing paddy to the miller (B1D1I1A0). This combination increases volumes sourced by 114.1 %. This underscores the sole vitality of a myriad of factors in determining the choice of utilization of a combination of paddy sourcing methods. This study can influence decisions and rice milling related policy formulation towards a sustainable paddy sourcing mechanisms and consistent rice milling business.
ABSTRACT
Study Design: Descriptive cross-sectional. Objective: To determine the morphology and morphometry of the nasopalatine canal (NPC) and incisive foramen (IF) in an African population. Methods: Measurements of the NPC and the IF were carried out on 150 Cone-Beam computed tomography (CBCT) scans. The maxillary bone thickness anterior to the NPC was measured at 3 levels. Independent t-test and Chi-square test were performed to determine the presence of sexual dimorphism. Results: The presence of one Stenson's foramen was most prevalent. The mean length of NPC was 13.21 ± 3.25 mm with significantly longer canals in males. The most prevalent shape of NPC was cylindrical in sagittal view and a single canal in coronal view. The mean angulation of NPC was 118.42° to the horizontal plane. The average dimensions of the IF were 3.53 mm and 3.07 mm in the anteroposterior and mediolateral diameter, respectively, while the most common shape was round. The anterior maxillary bone was thicker in males and generally reduced in thickness from the anterior nasal spine superiorly towards the alveolar crest inferiorly. Conclusion: This study highlights the anatomical characteristics of the NPC and IF, with significant sexual dimorphism observed regarding the number of Stenson's foramina, length of NPC, shapes of the NPC and IF, as well as alveolar bone thickness anterior to NPC.
ABSTRACT
3D radiographic evaluation of the patient should be conducted before disimpaction to establish proximity to the mandibular canal and borders of mandible. In addition, variations of the root canal system of premolars must thoroughly be understood.
