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Comparison of efficiencies and costs of different weed control methods in paddy production in Iran

International Journal of Agricultural and Biological Engineering 2012年第2期5卷 28-33页

作者： Reza Tabatabaekoloor hasan yousefnia pasha Jafar Hashemi Department of Farm Machinery Sari Agricultural Scieneces and Natural Resources UniversitySariIran

Using of efficient and inexpensive method for weed control has an important role in increasing efficiency and reducing costs of *** this study,field experiments were carried out to evaluate the efficiency and costs of several weed control methods in paddy production during summer in Mazandaran,the north province of Iran in *** weed control treatments(T1 to T7)were applied at three stages of rice growth(20 and 35 days after transplanting and grain harvesting time).Weed density,weed dry weight,labor used and economical comparison were determined in the basis of a complete randomized block design with three *** showed that there were no significant differences among efficiencies of six treatments(except for weedy check method(T6)treatment).The minimum weed density and dry weight were obtained at herbicide+hand weeding once(T5)and herbicide application once(T7)treatments during all three *** costs of weed control were different among the *** of control method has an important role in reducing *** weeding twice method(T1),because of its high weeding cost,hard work and worker restriction in the required time,is not *** weeding twice method(T2),due to its zero environment pollution,reducing costs of weed control and high benefit/cost,is the best and most appropriate *** of weed damage in weedy check method(T6)varied between 30.5%and 45.3%.

关键词： weed control paddy production economic evaluation mechanical weeding chemical weeding yield

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Exploring the practice of common oral diseases among the patients visiting in the selected dental college and hospital in Bangladesh

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Life Research 2022年第4期5卷 1-5页

作者： Khalid hasan pasha Md.Fazlul Karim Md.Mahmudur Rahman Ashek Elahi Noor Md.Mamunur Rashid Nahid Al Nomann Kazi Golam Mohiuddin Department of Oral&Maxillofacial Surgery Sapporo Dental College and HospitalDhaka-1230Bangladesh Department of Microbiology Kumudini Women’s Medical CollegeMirzapurTangail-1900Bangladesh Department of Gastroenterology Dhaka Medical College and HospitalDhaka-1312Bangladesh Department of Dental Public Health Sapporo Dental College and HospitalDhaka-1230Bangladesh New Labaid Diagnostic Center&Hospital Brahmanbaria-3400Bangladesh Department of Science of Dental Materials Sapporo Dental College and HospitalDhaka-1230Bangladesh

Background:Having the ability to identify potential health risk factors such as lifestyle,ethnicity,health status,and social determinants associated with oral health status risk,health care providers can take an active role in health screening to discover any need for clinical preventive services,including dental preventive services,and can detect health ***:A descriptive type of cross-sectional study was conducted to explore the practice of common oral diseases among the patients visiting in the selected dental college and hospital in Bangladesh from October 2019 to December *** 100 patients were interviewed through a semi-structured questionnaire,followed by an oral examination through a checklist and a face-to-face interview.A systematically random sampling technique was employed to select the study ***:Among them,the(21-30)year age group shows a maximum 20%,whereas the(71-80)year age group represents the minority with only 2%.Among them,56%were male and 44%were *** represent the majority of 26%,whereas others(day laborers)represent only 4%.Decayed teeth remained in 72%of cases,teeth were missing in 31%of cases,and filled teeth were present in 24%of cases.A majority of 71%clean teeth once daily,whereas only 29%clean teeth twice ***,only 30%brush teeth at night and a maximum of 95%brush teeth in the ***,a maximum of 68%use toothpaste and brushes,while only 4%use meswak for cleaning their *** 4%of cases with no debris,51%of cases with less than 1/3rd of the tooth with debris,32%of cases with 1/3rd-2/3rd of the tooth with debris,and 13%of cases with more than 2/3rd of the tooth with debris were ***,about 30%had no calculus,52%less than 1/3rd of tooth,16%in between 1/3rd and 2/3rd of tooth,and 2%more than 2/3rd of the calculus was *** 47%of mild,22%of moderate,6%of severe and 25%had no ***,for treatment purposes,20.69%was advised for scaling,19.66%for

关键词： dental caries abscess broken down root broken down crown decayed missing filled tooth root canal treatment orthopentomogram intra oral periapical cone beam computed tomography body mass index

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