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| 1 | A Transmission Electron Microscopy Study of Plate Martensite Formation in High-carbon Low Alloy Steels显示文摘The martensitic microstructures in two high-carbon low alloy steels have been investigated by classical and automated crystallographic analysis under a transmission electron microscope.It is found that the martensitic substructure changes from consisting mostly of transformation twins for 1.20 mass%carbon(C) steel to both transformation twins and planar defects on {101}_M for 1.67 mass%C steel.In the 1.67 mass%C steel it is further found that small martensite units have a rather homogeneous substructure,while large martensite units are more inhomogeneous.In addition,the martensite units in both steels are frequently found to be of zigzag patterns and have distinct crystallographic relationships with neighboring martensite units,e.g.kink or wedge couplings.Based on the present findings the development of martensite in high-carbon low alloy steels is discussed and a schematic of the martensite formation is presented.Moreover,whether the schematic view can be applied to plate martensite formation in general,is discussed. | Albin Stormvinter Peter Hedstrm Annika Borgenstam | 2013 | Journal of Materials Science & Technology2013，29，4： | 3 |
| 2 | Recurrent aphthous ulcer stomatitis and treatment pain management with Low Level Laser Therapy-a randomized controlled trial.显示文摘 | Margit Albrektson Lennart Hedstr?m H?kan Bergh | 2014 | Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology2014，，： | 2 |
| 3 | 显示文摘 | Stolt L Hedstrm J Kessler J | 1993 | Appl Phys Lett1993，62，： | 1 |
| 4 | Effect of carbon activity and powder particle size on WC grain coarsening daring sintering of cemented carbides 显示文摘 | Ida Borgh Peter Hedstr~m Annika Borgenstam | 2014 | Int Journal of Refractory Metals and Hard Materials2014，42，： | 1 |
| 5 | Zinc deficiency in patients with chronic pancreatitis显示文摘BACKGROUND Zinc is a key element in numerous proteins and plays an important role in essential cell functions such as defense against free radicals and DNA damage repair. Chronic pancreatitis(CP) is a chronic inflammation with progressive fibrosis of pancreas ultimately resulting in pancreatic exocrine insufficiency(PEI),which is associated with malnutrition. Studies analyzing zinc levels in patients with CP are sparse and lead to conflicting results.AIM To investigate serum zinc levels in patients with CP of various etiologies.METHODS Between October 2015 and March 2018, patients with a diagnosis of CP were identified and recruited from the Pancreatic Outpatient Clinic at the Karolinska University Hospital in Stockholm, Sweden. Demographic, clinical and laboratory data were analyzed. Etiology of CP was determined according to the MANNHEIM classification system into the following etiological subcategories:alcohol consumption, nicotine consumption, hereditary factors, efferent pancreatic duct factors and immunological factors. Pancreatic exocrine function was defined as normal(fecal elastase 1 > 200 μg/g), mildly reduced(100-200μg/g) and severely reduced(fecal elastase 1 < 100 μg/g).RESULTS A total of 150 patients were included in the analysis. Zinc deficiency(< 11μmol/L) was present in 39(26.0%) of patients: 22 females and 17 males. In the group of patients with zinc deficiency, 76.7% of patients had an exocrine pancreatic insufficiency(FE-1 < 200 μg/g). Older age was significantly associated with low zinc levels. Following a univariate analysis, patients aged 60-69 and patients ≥ 70 years of age had a significantly higher prevalence of zinc deficiencies compared to patients < 40 years of age [OR: 3.8, 95%CI(1.08-13.4); P= 0.04]; [OR 6.26, 95%CI(1.94-20.2), P > 0.002]. Smoking and number of packyears were additionally associated with low zinc levels. The risk of zinc deficiency in current smokers and smokers with ≥ 20 pack-years was approximately three times higher compared to those who had never smoked.Gender, body mass index, etiology of CP, presence of diabetes mellitus, levels of glycated hemoglobin(HbA1 c), bone mineral density, alcohol intake and presence of PEI were not associated with low zinc levels.CONCLUSION Zinc deficiency is common in patients with CP and is significantly associated with age ≥ 60, smoking and the number of pack-years, but not with PEI. | Miroslav Vujasinovic AleksANDra Hedstr?m Patrick Maisonneuve Roberto Valente Henrik von Horn J-Matthias L?hr Stephan L Haas | 2019 | World Journal of Gastroenterology2019，25，5： | 1 |
| 6 | A comparison of serum trypsinogen-2 and trypsin-2-alpha1-antitrypsin complex with lipase and amylase in the diagnosis and assessment of severity in the early phase of acute pancreatitis显示文摘 | Hedstr(o)m J Kemppainen E Andersen J | 2001 | Am J Gastroenterol2001，96，3： | 1 |
| 7 | Effect estimates and methodological quality of randomized controlled trials about prevention of alveolar osteitis following tooth extraction:A systematic review显示文摘 | Hedstr(o)m L Sj(o)gren P | 2007 | Oral Surg Oral Med Oral Pathol Oral Radiol Endod2007，103，1： | 1 |
| 8 | Serum Trypsinogen-2 in the Prediction of Outcome in Acute Necrotizing Pancreatitis显示文摘 | V. Sainio P. Puolakkainen E. Kemppainen J. Hedstr?m R. Haapiainen L. Kivisaari U.-H. Stenman T. Schr?der E. Kivilaakso | 1996 | Scandinavian Journal of Gastroenterology1996，，8： | 1 |
| 9 | Microwave Induced Combustion Synthesis of Nanocrystalline Yttria and Its Powder Characteristics显示文摘 | Mangalaraja R V Mouzon J Hedstrm P | 2009 | Powder Technology2009，191，3： | 1 |
| 10 | Risk factors for osteoporosis are common in young and middle-aged patients with femoral neck fractures regardless of trauma mechanism显示文摘 | Amer N Al-Ani Gustaf Neander Bodil Samuelsson Richard Blomfeldt Wilhelmina Ekströ m Margareta Hedströ m | 2013 | Acta Orthopaedica2013，，1： | 1 |
| 11 | Purification and characterisation of acidocin D20079,a bacteriocin produced by Lactobacillus acidophilus DSM 20079显示文摘 | DERAZ S F KARLSSON E N HEDSTR(O)M M | | 0，，： | 1 |
| 12 | Load partitioning and strain-induced martensite formation during tensile toading of a metastable austenitic stainless steel显示文摘 | Hedstrm P | 2009 | Matall MaterTrans A2009，40，5： | 1 |
| 13 | Myocardium at risk after acute in- farction in humans on cardiac magnetic resonance 显示文摘 | Carlsson M Ubachs JFA Hedstr~m E | 2009 | JACC Cardiovasc Ima- ging2009，2，5： | 1 |
| 14 | ZnO/CDS/CUINSE2 thin-film solar-cells with improved performance显示文摘 | Stolt L Hedstrm J Rückh M | 1993 | Applied Physics Letter1993，62，6： | 1 |
| 15 | Epidemiology of fractures inchildren and adolescents显示文摘 | Hedstr~m EM Svensson O Bergstrtim U | 2010 | Acta Orthopaedica2010，81，1： | 1 |
| 16 | Purification and characterisation of acidocin D20079, abacteriocin produced by Lactobacillus acidophilus DSM 20079显示文摘 | Deraz S F Karlsson E N Hedstr M | 2005 | Journal of Biotechnology2005，117，4： | 1 |
| 17 | Metronidazole for the prevention of dry socket after removal of partially impacted mandibular third molar: a randomized controlled trial显示文摘 | Bergdahl M Hedstr ML | 2004 | Br J Oral Maxillofac Surg2004，42，6： | 1 |
| 18 | A comparison of serum trypsinogen-2 and trypsin-2-α1-antitrypsin complex with lipase and amylase in the diagnosis and assessment of severity in the early phase of acute pancreatitis显示文摘 | Johan Hedstr?m Esko Kemppainen Jan Andersén Hannu Jokela Pauli Puolakkainen Ulf-H?kan Stenman | 2001 | The American Journal of Gastroenterology2001，，2： | 1 |
| 19 | Ion exchange of ammonium in zeolites:A literature review显示文摘 | | 2001 | J Environ Engin2001，127，8： | 1 |
| 20 | Metronidazole for the prevention of dry socket after removal of partially impacted mandibular third molar:a randomised controlled trial显示文摘 | Bergdahl M Hedstr m L | 2004 | Br J Oral Maxillofac Surg2004，42，6： | 1 |
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