The mineralogy and petrography of natural graphite in Saba Boru of Ethiopia indicate that there exists flake graphite with a slightly oval structured fine size according to our study on thin and polished sections.Here...The mineralogy and petrography of natural graphite in Saba Boru of Ethiopia indicate that there exists flake graphite with a slightly oval structured fine size according to our study on thin and polished sections.Herein,for estimating the carbon content in graphite,the ASTM-C561,the test method for ash in a graphite sample,was used.For characterizing graphite,x-ray diffraction,x-ray fluorescence,inductively coupled plasma mass spectroscopy,and scanning electron microscopy were also used.Chemical analysis of ore samples determined that the average compositions are 63.35%SiO2,15.45%Al2O3,2.36%Fe2O3,2.07%K2O,less than1%others,and loss-on-ignition(LOI)in the range of^4.74%–37.42%.The total carbon content of graphitic ore ranged from 4.11%to 33.14%.Importantly,when graphite is concentrated through floatation,its average purity and recovery are 92.97%and 90.82%,respectively.Furthermore,once the graphite concentrates are treated with hydrofluoric acid,the average value attains a high grade of 96.48%C.Moreover,the average ash content is 81.93%(pre-flotation)and 3.1%(post-flotation),respectively.Finally,after beneficiation,a silica is identified as a major gangue(85.88%),usable as a raw material for other purposes such as cement.Hence,these graphite-bearing rocks seem to be worth exploring for commercialization opportunities.展开更多
Introduction: Pain is the sensory and emotional experience, which altered human health and well-being. When pain does not resolve, it may be associated with a serious disease, condition, or injury that needs timely me...Introduction: Pain is the sensory and emotional experience, which altered human health and well-being. When pain does not resolve, it may be associated with a serious disease, condition, or injury that needs timely medical care and also irrational prescribing of analgesics, which is possible to lead to unwanted side effects. Therefore, this study has been intended to evaluate the prescribing pattern of analgesics drugs at Boru Meda Hospital. Method: A retrospective cross sectional descriptive study was conducted. A total of 200 prescriptions containing analgesic were systematically collected by using well designed and pretested Data collection format. The necessary information was extracted from the prescription sheets by trained pharmacists and later analyzed using SPSS version 20 software. Result: Regarding prescribed analgesic acetaminophen 115 (36.9%) was the most prescribed, and then followed diclofenac 83 (26.6%) and Ibuprofen 64 (20.5%). The maximum number of analgesic drugs was administered to patients by oral rout (75%), which is followed by parenteral (19%). About dosing approach 94% acetaminophen prescribed as needed (PRN) based, whereas ibuprofen 59.4% and tramadol 40% were prescribed as twice a day (bid) based. Acute fibril illness (13.6%) was the highest reason for prescribing analgesics. Conclusion: Majority of the prescription analgesics drugs were prescribed as PRN dosing approaches with a very large percentage of oral medications. Some of the prescriptions revealed irrational prescribing of analgesics, in accordance of clinical indication, frequency of administration and combination of analgesic.展开更多
基金This work was supported by Jimma Institute of Technology through Mega Project.
文摘The mineralogy and petrography of natural graphite in Saba Boru of Ethiopia indicate that there exists flake graphite with a slightly oval structured fine size according to our study on thin and polished sections.Herein,for estimating the carbon content in graphite,the ASTM-C561,the test method for ash in a graphite sample,was used.For characterizing graphite,x-ray diffraction,x-ray fluorescence,inductively coupled plasma mass spectroscopy,and scanning electron microscopy were also used.Chemical analysis of ore samples determined that the average compositions are 63.35%SiO2,15.45%Al2O3,2.36%Fe2O3,2.07%K2O,less than1%others,and loss-on-ignition(LOI)in the range of^4.74%–37.42%.The total carbon content of graphitic ore ranged from 4.11%to 33.14%.Importantly,when graphite is concentrated through floatation,its average purity and recovery are 92.97%and 90.82%,respectively.Furthermore,once the graphite concentrates are treated with hydrofluoric acid,the average value attains a high grade of 96.48%C.Moreover,the average ash content is 81.93%(pre-flotation)and 3.1%(post-flotation),respectively.Finally,after beneficiation,a silica is identified as a major gangue(85.88%),usable as a raw material for other purposes such as cement.Hence,these graphite-bearing rocks seem to be worth exploring for commercialization opportunities.
文摘Introduction: Pain is the sensory and emotional experience, which altered human health and well-being. When pain does not resolve, it may be associated with a serious disease, condition, or injury that needs timely medical care and also irrational prescribing of analgesics, which is possible to lead to unwanted side effects. Therefore, this study has been intended to evaluate the prescribing pattern of analgesics drugs at Boru Meda Hospital. Method: A retrospective cross sectional descriptive study was conducted. A total of 200 prescriptions containing analgesic were systematically collected by using well designed and pretested Data collection format. The necessary information was extracted from the prescription sheets by trained pharmacists and later analyzed using SPSS version 20 software. Result: Regarding prescribed analgesic acetaminophen 115 (36.9%) was the most prescribed, and then followed diclofenac 83 (26.6%) and Ibuprofen 64 (20.5%). The maximum number of analgesic drugs was administered to patients by oral rout (75%), which is followed by parenteral (19%). About dosing approach 94% acetaminophen prescribed as needed (PRN) based, whereas ibuprofen 59.4% and tramadol 40% were prescribed as twice a day (bid) based. Acute fibril illness (13.6%) was the highest reason for prescribing analgesics. Conclusion: Majority of the prescription analgesics drugs were prescribed as PRN dosing approaches with a very large percentage of oral medications. Some of the prescriptions revealed irrational prescribing of analgesics, in accordance of clinical indication, frequency of administration and combination of analgesic.
