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OALib Journal期刊

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Photoluminescence of hollow gold-silver bimetallic nanoparticles
Weon-Sik Chae,Hee-Ok Lee,Seung-Lim Oh
Journal of Analytical Science & Technology , 2011,
Abstract: Hollow gold nanoparticles including silver were prepared by the galvanic replacement reaction of silver nanoparticles by gold. The resulting hollow gold-silver bimetallic nanoparticles show notable blue-green emissions, which are studied using steady-state and time-resolved spectroscopy.
Comparative Study of Various Preparation Methods of Colloidal Silica  [PDF]
Hyung Mi Lim, Jinho Lee, Jeong-Hwan Jeong, Seong-Geun Oh, Seung-Ho Lee
Engineering (ENG) , 2010, DOI: 10.4236/eng.2010.212126
Abstract: Colloidal silica can be prepared by various methods and starting materials including ion exchange of aqueous silicates, hydrolysis and condensation of silicon compounds, direct oxidation of silicon, and milling and peptization of silica powder. Various silica sols having particle sizes of 10-60 nm prepared by these methods and the preparation methods have been compared on the basis of their shape, size uniformity, sphericity, stability against pH variation, cation concentration, and price, etc. Silica sol prepared from tetraethoxysilane affords uniform size control and growth, and high purity, despite the relatively high costs. Silica sol prepared from liquid silicates affords relatively easy size and shape control; however, it is difficult to lower the alkali content to a level that is appropriate for carrying out semiconductor chemical mechanical polishing processes; in addition, the waste water treatment carried out for recovering the ion exchange resin gives rise environmental consideration. The properties of colloidal silica prepared from fumed silica powder by milling and dispersion depend on the starting silica source and it is relatively difficult to obtain monodispersed particles using this method. Colloidal silica prepared from silicon by direct oxidation has a monodispersed spherical shape and purity control with reasonable prices. It generates less waste water because it can be directly produced in relatively high concentrations. The cation fraction located in the particle relative to the free cation in the fluid is relatively lower in the silica sol prepared by the direct oxidation than others. A careful comparison of colloidal silica and the preparation methods may help in choosing the proper colloidal silica that is the most appropriate for the application being considered.
Effect of fruiting body bacteria on the growth of Tricholoma matsutake and its related molds
John A. Eimes,Misong Kim,Seung-Yoon Oh,Young Woon Lim
- , 2018, DOI: 10.1371/journal.pone.0190948
Abstract:
Diversity and effect of Trichoderma isolated from the roots of Pinus densiflora within the fairy ring of pine mushroom (Tricholoma matsutake)
Hae Jin Cho,Myung Soo Park,Seung-Yoon Oh,Young Woon Lim
- , 2018, DOI: 10.1371/journal.pone.0205900
Abstract:
Postcholecystectomy syndrome: symptom clusters after laparoscopic cholecystectomy
Chi Yeon Lim,Hongbeom Kim,In Woong Han,Jin Seok Heo,Min Gu Oh,Seung Eun Lee,Yoo Shin Choi
- , 2018, DOI: 10.4174/astr.2018.95.3.135
Abstract: Postcholecystectomy syndrome (PCS) is characterized by abdominal symptoms following gallbladder removal. However, there is no consensus for the definition or treatment for PCS. The purpose of this study was to define PCS among various symptoms after laparoscopic cholecystectomy, and to identify risk factors affecting PCS
Taxonomic evaluation of selected Ganoderma species and database sequence validation
Jae Young Park,John A. Eimes,Myung Soo Park,Seung-Yoon Oh,Suldbold Jargalmaa,Young Woon Lim
- , 2017, DOI: 10.7717/peerj.3596
Abstract: Species in the genus Ganoderma include several ecologically important and pathogenic fungal species whose medicinal and economic value is substantial. Due to the highly similar morphological features within the Ganoderma, identification of species has relied heavily on DNA sequencing using BLAST searches, which are only reliable if the GenBank submissions are accurately labeled. In this study, we examined 113 specimens collected from 1969 to 2016 from various regions in Korea using morphological features and multigene analysis (internal transcribed spacer, translation elongation factor 1-α, and the second largest subunit of RNA polymerase II). These specimens were identified as four Ganoderma species: G. sichuanense, G. cf. adspersum, G. cf. applanatum, and G. cf. gibbosum. With the exception of G. sichuanense, these species were difficult to distinguish based solely on morphological features. However, phylogenetic analysis at three different loci yielded concordant phylogenetic information, and supported the four species distinctions with high bootstrap support. A survey of over 600 Ganoderma sequences available on GenBank revealed that 65% of sequences were either misidentified or ambiguously labeled. Here, we suggest corrected annotations for GenBank sequences based on our phylogenetic validation and provide updated global distribution patterns for these Ganoderma species
Calorie Labeling Promotes Dietary Self
Amanda S. Bruce,Jared M. Bruce,Molly T. Penrod,Oh-Ryeong Ha,Seung-Lark Lim
- , 2018, DOI: 10.1177/0956797617737871
Abstract: Understanding why people make unhealthy food choices and how to promote healthier choices is critical to prevent obesity. Unhealthy food choices may occur when individuals fail to consider health attributes as quickly as taste attributes in their decisions, and this bias may be modifiable by health-related external cues. One hundred seventy-eight participants performed a mouse-tracking food-choice task with and without calorie information. With the addition of calorie information, participants made healthier choices. Without calorie information, the initial integration of health attributes in overweight individuals’ decisions was about 230 ms delayed relative to the taste attributes, but calorie labeling promoted healthier choices by speeding up the integration of health attributes during a food-choice task. Our study suggests that obesogenic choices are related to the relative speed with which taste and health attributes are integrated into the decision process and that this bias is modifiable by external health-related cues
Survey research on the habitation and biological information of Callipogonrelictus Semenov in Gwangneung forest, Korea and Ussurisky nature reserve, Russia (Coleoptera, Cerambycidae, Prioninae)
Alexander V. Kuprin,Bong-Woo Lee,Cheolhak Kim,Jongok Lim,Jung-Hoon Kang,Seung Hwan Oh,Seung-Gyu Lee
- , 2018, DOI: 10.3897/zookeys.792.26771
Abstract:
Pemetrexed Monotherapy as Salvage Treatment in Patients with Metastatic Colorectal Cancer Refractory to Standard Chemotherapy: A Phase II Single-arm Prospective Trial
Ho Yeong Lim,Jeeyun Lee,Joon Oh Park,Se Hoon Park,Seung Tae Kim,Sujin Lee,Sung Won Lim,Won Ki Kang,Young Suk Park
Journal of Cancer , 2018, DOI: 10.7150/jca.24948
Abstract: Background: We designed a single-arm, open-label phase II study to determine the efficacy and toxicity of pemetrexed monotherapy with vitamin supplementation in patients with refractory colorectal cancer (CRC) that failed to respond to standard treatments including 5-fluorouracil, oxaliplatin, and irinotecan with or without biologic agents.
Measuring Musical Rhythm Similarity: Further Experiments with the Many-to-Many Minimum-Weight Matching Distance  [PDF]
Godfried T. Toussaint, Seung Man Oh
Journal of Computer and Communications (JCC) , 2016, DOI: 10.4236/jcc.2016.415011
Abstract:
Musical rhythms are represented as sequences of symbols. The sequences may be composed of binary symbols denoting either silent or monophonic sounded pulses, or ternary symbols denoting silent pulses and two types of sounded pulses made up of low-pitched (dum) and high-pitched (tak) sounds. Experiments are described that compare the effectiveness of the many-to-many minimum-weight matching between two sequences to serve as a measure of similarity that correlates well with human judgements of rhythm similarity. This measure is also compared to the often used edit distance and to the one-to-one minimum-weight matching. New results are reported from experiments performed with three widely different datasets of real- world and artificially generated musical rhythms (including Afro-Cuban rhythms), and compared with results previously reported with a dataset of Middle Eastern dum-tak rhythms.
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