![]() ![]() We report two patients with chronic hepatitis C virus infection who experienced a severe increase of bilirubin levels of up to 17 times upper the limit of normal value in the absence of deterioration of hepatic function during therapy with pegylated-interferon and ribavirin. Treatment of chronic hepatitis C with type I interferons and ribavirin can be associated with exacerbation of hepatitis and sometimes liver decompensation. Our journal seeks to publish articles on basic clinical care and translational research focused on preventing rather than treating the complications of end-stage liver disease. Topics covered by AoH include alcoholic liver disease, autoimmune hepatitis, biliary diseases, drug-induced liver injury, genetic liver diseases, NAFLD/NASH and viral hepatitis (HAV, HBV, HCV, HDV, HEV). AoH publishes editorials, opinions, concise reviews, original articles, brief reports, letters to the editor, news from affiliated associations, clinical practice guidelines and summaries of congresses in the field of Hepatology. It is the official journal of the Mexican Association of Hepatology ( AMH), the Latin American Association for the Study of the Liver ( ALEH), the Canadian Association for the Study of the Liver ( CASL) and the Czech Society of Hepatology ( CSH). The result, better production, fewer breakups in the planer and longer service life on the machine.Annals of Hepatology (AoH) is an international, open access journal published bi-monthly with funds from the Fundación Clínica Médica Sur. The Cobra tension system takes the harsh “banging” out of the operation and makes the whole system much smoother. The Cobra system provides constant tension, even with high variations in lumber thickness, using specially designed cylinders, accumulators, and adjustable pressure controls. When variations exceed 1/8 inch or more the lumber will at times hesitate in the planer and cause break ups requiring the planer operator to stop production. ![]() This creates wear and tear on the bearings, rolls, shafts, and results in less than optimum performance. The planer operator has to constantly try to balance the tension settings based on how the lumber is running, or continue running all lumber with the same settings. In a normal run of lumber, however, thickness variation causes the rolls to “hammer themselves”, leading to a premature failure. This works well when all the lumber is similar in thickness. The tension on many planers causes the rolls to have varying tension based on the thickness of each piece of lumber. The ideal is a LOW BUT CONSTANT tension that keeps the boards traveling smoothly without slipping or hesitating. If bed rolls are set to low you might see extreme shock to the top roll, sniping on the out-feed end of the board and wear and tear on the bearings, rolls, shafts, resulting in less than optimum performance and loss of tolerances needed to achieve maximum production The end results, breakups, down time and degrading of lumber. If bed rolls are set to high you might see lumber sticking, board hesitating and snip on the in-feed end of the boards. If the bed roll pressure is set to high you might see incorrect planer feeding, excessive roll ganging, wood won’t go through planer easy, raising of the grain, and extreme shock to the planer. the hold down pressure needs to set as low as possible, at the same time keep all boards traveling smoothly without slipping or hesitating in the planer. Check the top bed roll tension system that it is correctly adjusted for the product being ran. Make sure there is almost no movement in this top bed roll at least 80 % less than the in-feed rolls. This setting might be different depending on what planer you have, check manual. The mid and out feed roll should be set low enough to just touch and pull the boards out of the planer, meaning within thousand of an inch of finished product. Set the first top in-feed roll for the thinnest board and the second in-feed roll at ether the same as the first roll or a few thousand higher. ![]() Check for ware and clean out all compacted fibers imbedded into the knurls. Confirm bottom rolls are set correctly and haven’t moved due to ware and shock. ![]()
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