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Modeling and Simulation of a Large-Area Plasma Source
MENG, Lin,LEE, Hae June,SHIN, Young Kyo,LEE, Jae Koo,CHUNG, Tae Hun 東亞大學校附設基礎科學硏究所 1998 基礎科學硏究論文集 Vol.15 No.1
A variant of transformer-coupled plasma, suitable for processing a large-area flat panel with good uniformity, is examined using various models and simulations. Using two-dimensional and one-dimensional fluid simulations, we present the detailed profiles of the plasma density, potential, electron temperature, electric field structure, and ion current density at the substrate. The average values compare reasonably well with those of a global(volume-averaged) model.
Performance Analysis of Buffer Aware Scheduling for Video Services in LTE Network
( Meng-hsien Lin ),( Yen-wen Chen ) 한국인터넷정보학회 2015 KSII Transactions on Internet and Information Syst Vol.9 No.9
Recent advancements in broadband wireless communication technologies enable mobile users to receive video streaming services with various smart devices. The long term evolution (LTE) network provides high bandwidth and low latency for several emerging mobile applications. This paper proposes the buffer aware scheduling (BAS) approach to schedule the downlink video traffic in LTE network. The proposed BAS scheme applies the weighting function to heuristically adjust the scheduling priority by considering the buffer status and channel condition of UE so as to reduce the time that UE stays in the connected state without receiving data. Both of 1080P and 2160P resolution video streaming sources were applied for exhaustive simulations to examine the performance of the proposed scheme by comparing to that of the fair bandwidth (FB) and the best channel quality indicator (CQI) schemes. The simulation results indicate that the proposed BAS scheme not only achieves better performance in power saving, streaming delivery time, and throughput than the FB scheme while maintaining the similar performance as the best CQI scheme in light traffic load. Specifically, the proposed scheme reduces streaming delivery time and generates less signaling overhead than the best CQI scheme when the traffic load is heavy.
The Situation, Models and Strategies of Forage Production in Beijing
Lin Meng,Pei-chun Mao,Lie-gang Han,Guo-fang Zhang 한국초지조사료학회 2009 한국초지조사료학회 학술대회논문집 Vol.2009 No.08
The situation, problems and models of forage production and industrialization in Beijing were analyzed, and the strategies were pointed out including: (1) The suitable planting areas for alfalfa, silage com and rye etc should be defined systemically, and the rational harvest time and dry skills should be set up in Beijing plain areas. (2) The perennial forage crops with higher drought resistance should be planted in the waste slope land and barren land. (3) The interplant forage crops in the woodland and orchard should be generalized.
Meng-Ying Lin,Cheng-Lin Wu,Mitsuhiro Kida,Wei-Lun Chang,Bor-Shyang Sheu 대한소화기내시경학회 2021 Clinical Endoscopy Vol.54 No.3
Background/Aims: Endoscopic ultrasonography (EUS)-guided tissue acquisition requires a long learning curve. We aimed tocompare the skill maturation curves between fine needle aspiration (FNA) and biopsy (FNB) for tissue acquisition. Methods: The initial 60 procedures performed by the trainee endosonographer (30 FNA vs. 30 FNB) were consecutively enrolled. The difference in procedure performance was compared between the two groups. Learning curves were assessed. Twenty additionalcases were subsequently enrolled to assess the consistency of performance in the FNB group. Results: The FNB group acquired larger tissue samples (2.35 vs. 0.70 mm2; p<0.001) with lower blood content (p=0.001) and highertissue quality (p=0.017) compared with the FNA group. In addition, the FNB group required less needle pass to establish a diagnosis(2.43 vs. 2.97; p=0.006). A threshold diagnostic sensitivity of ≥80% was achieved after performing 10 FNB procedures. The numberof needle passes significantly decreased after conducting 20 FNB procedures (1.80 vs. 2.70; p=0.041). The diagnostic sensitivity andnumber of needle passes remained the same in the subsequent FNB procedures. By contrast, this skill maturation phenomenon wasnot observed after performing 30 FNA procedures. Conclusions: In EUS-guided tissue acquisition, the FNB needle was more efficient and thus shortened the learning curve of EUSguidedtissue acquisition in trainee endosonographers.
( Meng-juan Lin ),( Bao-ping Yu ) 대한소화기기능성질환·운동학회(구 대한소화관운동학회) 2018 Journal of Neurogastroenterology and Motility (JNM Vol.24 No.4
Background/Aims Irritable bowel syndrome (IBS) is a common disease characterized by intestinal dysmotility, the mechanism of which remains elusive. We aim to determine whether the high-affinity choline transporter 1 (CHT1), a determinant of cholinergic signaling capacity, modulates intestinal motility associated with stress-induced IBS. Methods A rat IBS model was established using chronic water avoidance stress (WAS). Colonic pathological alterations were evaluated histologically and intestinal motility was assessed by intestinal transit time and fecal water content (FWC). Visceral sensitivity was determined by visceromotor response to colorectal distension. RT-PCR, western blotting, and immunostaining were performed to identify colonic CHT1 expression. Contractility of colonic muscle strips was measured using isometric transducers. enzyme-linked immunosorbent assay was used to measure acetylcholine (ACh). We examined the effects of MKC-231, a choline uptake enhancer, on colonic motility. Results After 10 days of WAS, intestinal transit time was decreased and fecal water content increased. Visceromotor response magnitude in WAS rats in response to colorectal distension was significantly enhanced. Protein and mRNA CHT1 levels in the colon were markedly elevated after WAS. The density of CHT1-positive intramuscular interstitial cells of Cajal and myenteric plexus neurons in WAS rats was higher than in controls. Ammonium pyrrolidine dithiocarbamate partly reversed CHT1 upregulation and alleviated colonic hypermotility in WAS rats. Pharmacological enhancement of CHT1 activity by MKC-231 enhanced colonic motility in control rats via upregulation of CHT1 and elevation of ACh production. Conclusion Upregulation of CHT1 in intramuscular interstitial cells of Cajal and myenteric plexus neurons is implicated in chronic stress-induced colonic hypermotility by modulation of ACh synthesis via nuclear factor-kappa B signaling. (J Neurogastroenterol Motil 2018;24:643-655)
Meng Lin,Renyong Jia,Mingshu Wang,Xinghong Gao,Dekang Zhu,Shun Chen,Mafeng Liu,Zhongqiong Yin,Yin Wang,Xiaoyue Chen,Anchun Cheng 대한수의학회 2014 JOURNAL OF VETERINARY SCIENCE Vol.15 No.3
The UL49.5 gene of most herpesviruses is conserved andencodes glycoprotein N. However, the UL49.5 protein ofduck enteritis virus (DEV) (pUL49.5) has not been reported. In the current study, the DEV pUL49.5 gene was firstsubjected to molecular characterization. To verify thepredicted intracellular localization of gene expression, therecombinant plasmid pEGFP-C1/pUL49.5 was constructedand used to transfect duck embryo fibroblasts. Next, therecombinant plasmid pDsRed1-N1/ glycoprotein M (gM)was produced and used for co-transfection with thepEGFP-C1/pUL49.5 plasmid to determine whether DEVpUL49.5 and gM (a conserved protein in herpesviruses)colocalize. DEV pUL49.5 was thought to be an envelopeglycoprotein with a signal peptide and two transmembranedomains. This protein was also predicted to localize in thecytoplasm and endoplasmic reticulum with a probability of66.7%. Images taken by a fluorescence microscope atdifferent time points revealed that the DEV pUL49.5 andgM proteins were both expressed in the cytoplasm. Overlapof the two different fluorescence signals appeared 12 h aftertransfection and continued to persist until the end of theexperiment. These data indicate a possible interaction between DEV pUL49.5 and gM.