http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Unilateral Punctate Keratitis Secondary to Wallenberg Syndrome
Pino Cidad,Ana Boto,Almudena Del Hierro,Maria Capote,Susana Noval,Amanda Garcia,Susana Santiago 대한안과학회 2014 Korean Journal of Ophthalmology Vol.28 No.3
We studied three patients who developed left unilateral punctate keratitis after suffering left-sidedWallenberg Syndrome. A complex evolution occurred in two of them. In all cases, neurophysiologicalstudies showed damage in the trigeminal sensory component at the bulbar level. Corneal involvementsecondary to Wallenberg syndrome is a rare cause of unilateral superficial punctate keratitis. The lossof corneal sensitivity caused by trigeminal neuropathy leads to epithelial erosions that are frequentlyunobserved by the patient, resulting in a high risk of corneal-ulcer development with the possibility ofsuperinfection. Neurophysiological studies can help to locate the anatomical level of damage at theophthalmic branch of the trigeminal nerve, confirming the suspected etiology of stroke, and demonstratingthat prior vascular involvement coincides with the location of trigeminal nerve damage. In some of thesepatients, oculofacial pain is a distinctive feature.
( San Juan Lopez Cristina ),( Casado Martin Marta ),( Gonzalez Sanchez Mercedes ),( Porcel Martin Almudena ),( Hernandez Martinez Alvaro ),( Vega Saenz Jose Luis ),( Parron Carreno Tesifon ) 대한간학회 2018 Clinical and Molecular Hepatology(대한간학회지) Vol.24 No.4
Backgrounds/Aims: The objective of our study was to determine the epidemiological, laboratory, and serological characteristics of patients with chronic hepatitis B virus (HBV) infection and normal transaminases. The study also aimed to evaluate liver damage by measuring the liver fibrosis (LF) grade and to identify possible factors associated with the presence of fibrosis. Methods: A retrospective observational study was conducted in patients with chronic HBV infection and classified as inactive carriers or immune-tolerant. Epidemiological variables of age, sex, immigrant, alcohol consumption, and body mass index (BMI), as well as virological variables (HBV DNA) and transaminase level were collected throughout the follow-up. The LF grade was evaluated by transient elastography. The cutoff value for significant fibrosis (SF) was liver stiffness ≥7.9 kPa. Results: A total of 214 patients were included in the analysis, and 62% of them had a BMI ≥25 kg/㎡. During follow-up, 4% of patients showed transaminase elevation (<1.5 times normal). Most patients had a viral DNA level <2,000 IU/mL (83%). Data on LF were available in 160 patients; of these, 14% had SF, 9% F3, and 6% F4. The variables associated with the presence of SF were transaminase alteration during follow-up, as 23% of patients with SF had elevated transaminases versus 3% of patients without SF (P<0.005), and BMI, as the vast majority of patients with SF (88%) had a BMI ≥25 kg/㎡ versus 56% of patients without SF (P<0.05). Conclusions: In patients with chronic HBV infection and normal transaminases, liver damage does not seem to be related to DNA levels, alcohol consumption, or immigrant status. SF seems to be associated with transaminase alteration during follow-up and elevated BMI. It is therefore recommended to measure LF grade with validated non-invasive methods in such patients. (Clin Mol Hepatol 2018;24:384-391)
Molecular Characterization of Polypropylene Heterophasic Copolymers by Fractionation Techniques
Rafael A. García,Baudilio Coto,María-Teresa Expósito,Inmaculada Suarez,Almudena Fernández-Fernández,Susana Caveda 한국고분자학회 2011 Macromolecular Research Vol.19 No.8
Molecular microstructure, thermal properties and morphology of three polypropylene heterophasic copolymers (PHC) with similar comonomer content were characterized by gel permeation chromatography (GPC),differential scanning calorimetry (DSC), analytical and preparative temperature rising elution fractionation (TREF),scanning electron microscopy (SEM), and carbon nuclear magnetic resonance spectroscopy (13C NMR). These results indicate that there are no differences in solution and thermal properties between unfractionated copolymers. Nevertheless, a physical fractionation by crystallization of these copolymers was developed to carry out a detailed study. Four fractions at different temperatures were collected. The results showed that the PHC’s copolymers are composed by polypropylene, ethylene-propylene rubber (EPR) and, crystallisable sequences with different propylene and/or ethylene comonomers distribution. Despite the similar thermo-chemical properties shown by the raw PHC’s copolymers, the characterization of fractions displayed significant differences between them. These results suggest that the fractionation by crystallization allows the different components in which the PHC’s copolymers are based to be distinguished clearly, and obtain a more comprehensive sense of the molecular structure characterization.