47 results on '"Yan-Wei Liu"'
Search Results
2. Hepatic Lesions of Total Parenteral Nutrition (Tpn) Secondary to Umbilical Venous Catheter (Uvc) Malposition in A Very Low-Birth Weight Infant in China
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Xiao-ping Luo, Li Wang, and Yan-wei Liu
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medicine.medical_specialty ,Low birth weight ,Catheter ,Parenteral nutrition ,business.industry ,Materials Science (miscellaneous) ,medicine ,medicine.symptom ,business ,Surgery - Abstract
Umbilical vein catheterization (UVC) is a common operation for vascular access in preterm infants. However, there are complications associated with their use. We here a case of extravasation of the fluids due to misplacement of the catheter causing hepatic collection of TPN in a very low-birth weight preterm (VLBW) infant.
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- 2021
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3. Interfacial adsorption behavior of the Aspergillus oryzae lipase-chitosan complex and stability evaluation of the resultant Pickering emulsion
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Yan-Wei Liu, Qing-Hao Li, Shi-Yu Li, Guo-Qing Huang, and Jun-Xia Xiao
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Structural Biology ,General Medicine ,Molecular Biology ,Biochemistry - Published
- 2023
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4. Interaction between Aspergillus oryzae lipase and chitosan: The underlying mechanism and complex characterization
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Yan-Wei Liu, Qing-Hao Li, Guo-Qing Huang, and Jun-Xia Xiao
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General Chemical Engineering ,General Chemistry ,Food Science - Published
- 2023
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5. Promising hen egg-derived proteins/peptides (EDPs) for food engineering, natural products and precision medicines
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Jing-Jing Ji, Yan-Wei Liu, Jing Bai, Jing-Zhang Wang, Cheng-Rui Zhao, Yu-Hua Zhang, and Wan-Nian Jiang
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Proteomics ,Food industry ,040301 veterinary sciences ,Eggs ,Diabetic mellitus ,Egg protein ,Biology ,0403 veterinary science ,03 medical and health sciences ,Nutraceutical ,Animals ,Humans ,Food science ,Precision Medicine ,030304 developmental biology ,Biological Products ,0303 health sciences ,General Veterinary ,business.industry ,Egg Proteins ,Vitamins ,04 agricultural and veterinary sciences ,Female ,Peptides ,business ,Chickens ,Medical therapy - Abstract
Hen eggs (HEs) provide valuable nutrients for humans, including proteins, carbohydrates, lipids and vitamins. Recent studies revealed a number of novel egg-derived proteins/peptides (EDPs), and EDPs may play a crucial role in food industry and medical therapy. First, these EDPs were purified from the enzyme-catalyzed hydrolysates of egg proteins and were characterized by biochemical assays such as gel electrophoresis, HPLC, mass spectrometry, proteomic and peptideomic analysis, etc. Second, some EDPs can be used as nontoxic bio-preservatives and functional nutraceuticals for replacing harmful sodium nitrite, inhibiting foodborne pathogens, promoting metal-ion absorption and improving meat-product quality, and these new features will be widely used in the field of food production. Third, novel medical properties of EDPs comprise anti-oxidative, anti-microbial, anti-inflammatory and anti-nociceptive activities, which will benefit prevention of cardiovascular diseases, cancers, diabetic mellitus, immune disorders, etc. In summary, this review gives a real insight into the novel nutritional, biological and medical functions of EDPs, predictably facilitating the applications of EDPs in production of nutritive supplements, functional nutraceuticals and therapeutic medicines.
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- 2020
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6. Fabrication of lipase-loaded particles by coacervation with chitosan
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Yan-Wei Liu, Ying Zhou, Guo-Qing Huang, Li-Ping Guo, Xiao-Dan Li, and Jun-Xia Xiao
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Chitosan ,Kinetics ,Aspergillus oryzae ,General Medicine ,Lipase ,Hydrogen-Ion Concentration ,Food Science ,Analytical Chemistry - Abstract
Coacervation of the lipase from Aspergillus oryzae (AOL) with chitosan was a feasible way to fabricate lipase-loaded particles and the optimum conditions were phase separation pH 5.5, chitosan to AOL mass ratio 1:5, and temperature 25 °C in the absence of NaCl, which conferred an AOL loading efficiency of up to 95.48% and activity recovery of 69.60%. The AOL-chitosan coacervates were highly porous and more susceptible to weight loss upon heating. Coacervation with chitosan increased the activity of AOL and shifted its optimum pH from 7.0 to 6.0, but exerted no effect on its optimum temperature (45 °C). Thermal deactivation kinetics analysis revealed that the coacervated AOL was more thermal stable, while the Michaelis-Menten kinetics analysis indicated that coacervation with chitosan increased the V
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- 2021
7. Emergency irradiation with 3.4 Gy/2f in sellar/suprasellar germinoma patients with rapid visual acuity decline
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Bo Li, You-Qi Li, Chun-De Li, Yao Chen, Yan-Wei Liu, Shuai Liu, Xiao-Guang Qiu, Shi-Qi Luo, and Xin Chen
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Adult ,Visual acuity ,Adolescent ,genetic structures ,lcsh:Medicine ,Age at diagnosis ,Beta-human chorionic gonadotropin ,Chorionic Gonadotropin ,Young Adult ,03 medical and health sciences ,0302 clinical medicine ,Drug Therapy ,Tumor regression ,Chemotherapy ,Humans ,Medicine ,In patient ,Child ,Retrospective Studies ,Radiotherapy ,Germinoma ,business.industry ,lcsh:R ,Original Articles ,General Medicine ,medicine.disease ,eye diseases ,Absolute deviation ,Visual function ,Child, Preschool ,030220 oncology & carcinogenesis ,Sellar/suprasellar ,medicine.symptom ,business ,Nuclear medicine ,030217 neurology & neurosurgery ,Chemoradiotherapy - Abstract
Background: Rapid visual acuity (VA) decline was a common complaint in patients with sellar/suprasellar germinoma. In our hospital, 3.4 Gy/2f of emergency irradiation was applied to save patient VA and enable subsequent chemoradiotherapy. This study aimed to investigate the efficacy of emergency irradiation with 3.4 Gy/2f in patients with sellar/suprasellar germinoma who had rapid VA decline. Methods: From January 2014 to December 2017, 33 patients with sellar/suprasellar germinoma who complained of VA decline within 3 months received 3.4 Gy/2f of emergency irradiation in Beijing Tiantan Hospital. The best-corrected VA (BCVA) and mean deviation (MD) were measured. Correlations between visual function change and clinical factors, including age at diagnosis, duration of VA decline, extent of tumor regression, serum level of tumor markers, were analyzed. Results: Among 33 patients with sellar/suprasellar germinoma, the median diameter and volume of sellar/suprasellar lesions were 32 mm (range: 5–55 mm) and 12.9 cm3 (range 0.6–58.5 cm3), respectively. Data on pre- and post-emergency-irradiation BCVA were obtained in 32 patients. For the right eyes, BCVA was improved in 23 patients (71.9%), unchanged in 7 (21.9%), and worsened in 2 (6.2%); and for the left eyes, these numbers were 27 (84.4%), 4 (12.5%), and 1 (3.1%), respectively. In terms of the logarithm of the minimum angle of resolution (logarithm of the minimum angle of resolution = Log (1/BCVA) score, the improvement was significant in both eyes (P < 0.001). In terms of MD, six patients had paired data and the improvement was marginal in the right eyes (P = 0.068) and significant in the left eyes (P = 0.043). However, no clinical factor was found to have correlation with visual function improvement. Conclusion: In sellar/suprasellar germinoma patients with VA decline, 3.4 Gy/2f of emergency irradiation was effective in improving visual function. Key words: Germinoma; Sellar/suprasellar; Radiotherapy; Chemotherapy; Visual acuity; Beta-human chorionic gonadotropin
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- 2019
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8. Synthesis, characterization and antitumor activity of (E)-2-methyl-3-ferrocenyl-N-acrylamide derivatives
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Ban-Feng Ruan, Qiao Hu, Hui-Jie Cheng, and Yan-Wei Liu
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Antitumor activity ,010405 organic chemistry ,Stereochemistry ,Chemistry ,Organic Chemistry ,010402 general chemistry ,01 natural sciences ,Biochemistry ,0104 chemical sciences ,Inorganic Chemistry ,chemistry.chemical_compound ,Apoptosis ,Cancer cell apoptosis ,Acrylamide ,Materials Chemistry ,Physical and Theoretical Chemistry ,Single crystal - Abstract
We report here the synthesis, characterization of seventeen (E)-2-methyl-3-ferrocenyl-N-acrylamides. The single crystal structures of the key intermediate b and two target compounds d5 and d6 were confirmed by X-ray crystallographic analysis. Antitumor activity of all compounds was tested in vitro. Compound d1 was the most significant one against B16 F10 cell line, indicating that it could be a good candidate for further study. Furthermore, cancer cell apoptosis assay was performed and the result indicated that compound d1 effectively fueled B16 F10 cells apoptosis in a dose-dependent manner.
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- 2019
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9. New Technology and Experimental Research on Thick-Walled Tube Fatigue Impact Loading Precision Separation
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Ren-Feng Zhao, Wei-Cheng Gao, Dong-Ya Zhang, Xu-Dong Xiao, Yan-Wei Liu, and Run-Ze Pan
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Metals and Alloys ,General Materials Science ,thick-walled tube ,repeated impact load ,stress concentration effect ,crack initiation ,control curve - Abstract
Traditional separation methods for thick-walled metal tubes include turning and sawing, which suffer from wasted raw material and low efficiency. In view of this, this paper proposes a new process of using impact load to promote crack generation and tube separation. Based on the principles of radial repeated impact load, stress concentration effect and fatigue fracture, the rapid initiation and stable expansion of tube fatigue crack are promoted. In addition, the crack initiation mechanism of the tube V-notch root cracks under radial repeated load when the tube is in a restrained state. For the experimental study of the GCr15 steel tube, a multistep decline frequency time tube separation control curve with an initial frequency from 4 Hz to 31 Hz and termination frequency from 1 Hz to 8.5 Hz was designed, and the precision tube separation device is loaded by pneumatic fatigue shock to achieve tube precision separation. In addition, a tube fracture quality evaluation method is proposed. According to the test results, the stress concentration effect of V-notch can significantly reduce the average stress in the process of tube fatigue separation and accelerate the generation of microcracks. Under the continuous action of repeated impact load, the loading method of multistep decline can effectively control the rapid crack initiation and stable expansion of the GCr15 tube V-notch root crack. Moreover, the tube final fracture region has relatively small defects, which can obtain good fracture quality.
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- 2022
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10. Priority-based scheduling using best channel in 6TiSCH networks
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Yan-Wei Liu, Jiun-Jian Liaw, Hung-Chi Chu, Tsung-Han Lee, and Lin-Huang Chang
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Computer Networks and Communications ,Computer science ,business.industry ,Network packet ,ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS ,020206 networking & telecommunications ,Data_CODINGANDINFORMATIONTHEORY ,02 engineering and technology ,IPv6 ,Scheduling (computing) ,0202 electrical engineering, electronic engineering, information engineering ,Frequency-hopping spread spectrum ,Wireless ,020201 artificial intelligence & image processing ,Fading ,The Internet ,business ,Wireless sensor network ,Software ,Computer network ,Communication channel - Abstract
Many industrial wireless sensor networks deploy the IEEE 802.15.4-2015 standard with low power consumption and the Internet networking capabilities. The time-slotted channel hopping (TSCH) is an amendment to the medium access control protocol defined by the IEEE 802.15.4 standard. Furthermore, the Internet engineering task force (IETF) defines an architecture for IPv6 over the TSCH mode of IEEE 802.15.4 (6TiSCH) to provide deterministic properties on wireless sensor networks. The TSCH leverages the scheduled time slot to achieve low power operation and frequency hopping to combat external interference and multi-path fading. Although TSCH provides the channel hopping mechanism to increase transmission reliability, it is still susceptible to periodic interference for the specific frequency. In this research, we focus on the issue of random channel hopping in the error-prone wireless channel condition and the scheduling for different service requirements. We propose a priority-based scheduling using best channel (P-SBC) mechanism for periodic sensing data and emergency packets transmission in 6TiSCH networks. The simulation results show that the proposed P-SBC achieves higher reliability with significantly lower end-to-end latency for emergency packets transmission as compared to TSCH standard.
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- 2017
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11. Asiatic acid ameliorates pulmonary fibrosis induced by bleomycin (BLM) via suppressing pro-fibrotic and inflammatory signaling pathways
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Zhi-Dong Han, Feng Wei, Hui-Zhen Tan, Shu-Hong Dong, and Yan-Wei Liu
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Male ,0301 basic medicine ,Pathology ,medicine.medical_specialty ,MAP Kinase Signaling System ,Pulmonary Fibrosis ,Anti-Inflammatory Agents ,Biology ,Lung injury ,Bleomycin ,Collagen Type I ,Cell Line ,Transforming Growth Factor beta1 ,Mice ,03 medical and health sciences ,chemistry.chemical_compound ,Idiopathic pulmonary fibrosis ,0302 clinical medicine ,Fibrosis ,NLR Family, Pyrin Domain-Containing 3 Protein ,Pulmonary fibrosis ,medicine ,Animals ,Humans ,Lung ,Inflammation ,Pharmacology ,Tissue Inhibitor of Metalloproteinase-1 ,medicine.diagnostic_test ,Inflammasome ,Lung Injury ,General Medicine ,medicine.disease ,Mice, Inbred C57BL ,Collagen Type III ,030104 developmental biology ,Bronchoalveolar lavage ,medicine.anatomical_structure ,chemistry ,030220 oncology & carcinogenesis ,Cancer research ,Cytokines ,Pentacyclic Triterpenes ,Bronchoalveolar Lavage Fluid ,Signal Transduction ,medicine.drug - Abstract
Idiopathic pulmonary fibrosis is known as a life-threatening disease with high mortality and limited therapeutic strategies. In addition, the molecular mechanism by which pulmonary fibrosis developed is not fully understood. Asiatic acid (AA) is a triterpenoid, isolated from Centella asiatica, exhibiting efficient anti-inflammatory and anti-oxidative activities. In our study, we attempted to explore the effect of Asiatic acid on bleomycin (BLM)-induced pulmonary fibrosis in mice. The findings indicated that pre-treatment with Asiatic acid inhibited BLM-induced lung injury and fibrosis progression in mice. Further, Asiatic acid down-regulates inflammatory cells infiltration in bronchoalveolar lavage fluid (BALF) and pro-inflammatory cytokines expression in lung tissue specimens induced by BLM. Also, Asiatic acid apparently suppressed transforming growth factor-beta 1 (TGF-β1) expression in tissues of lung, accompanied with Collagen I, Collagen III, α-SMA and matrix metalloproteinase (TIMP)-1 decreasing, as well as Smads and ERK1/2 inactivation. Of note, Asiatic acid reduces NOD-like receptor, pyrin domain containing-3 (NLRP3) inflammasome. The findings indicated that Asiatic acid might be an effective candidate for pulmonary fibrosis and inflammation treatment.
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- 2017
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12. PIN1, a perspective on genetic biomarker for nonalcoholic fatty liver disease (NAFLD)
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Yan-Wei Liu, Jing-Zhang Wang, Jing Bai, Wen-Tao Du, and Yu-Hua Zhang
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medicine.medical_specialty ,Plasma biomarker ,NAFLD - Nonalcoholic Fatty Liver Disease ,Single-nucleotide polymorphism ,Gastroenterology ,digestive system ,lcsh:Physiology ,Genetic basis ,lcsh:Biochemistry ,Pin1 ,Internal medicine ,Nonalcoholic fatty liver disease ,Genotype ,Medicine ,SNP ,lcsh:QD415-436 ,FGF-2, fibroblast growth factor 2 ,PPARα, peroxisome proliferator-activated receptor α ,lcsh:QP1-981 ,business.industry ,nutritional and metabolic diseases ,HIF-1α, hypoxia inducible factor-1α ,General Medicine ,SNP, single nucleotide polymorphism ,Early diagnosis ,medicine.disease ,VEGF, vascular endothelial growth factor ,digestive system diseases ,Original Research Paper ,TGF-β1, transforming growth factor-β1 ,PIN1 ,Biomarker (medicine) ,NAFLD, nonalcoholic fatty liver disease ,business - Abstract
Objective A novel genetic and molecular basis of nonalcoholic fatty liver disease (NAFLD) was explored. Study design A 38-year-old male, who has no bad living and dietary habits, was diagnosed as NAFLD. The potential pathogenic role of Pin1 was evaluated by enzyme-linked immunosorbent (ELISA) assay and single nucleotide polymorphism (SNP) sequencing. Results ELISA determined a six-time higher concentration of plasma Pin1 compared to our previous data. Nine PIN1 SNPs were sequenced and classified according to their NAFLD-pathogenic risks, suggesting that rs2233678 and rs2287839 may be the most important genotypes that result in Pin1 overexpression and NAFLD development. Conclusion In summary, this work explores a novel basis for early-onset NAFLD and highlights that elevated plasma Pin1 may predict NAFLD risk at early stage. Hypothetically, inhibiting Pin1 may benefit NAFLD prevention in the future., Highlights • We explored a novel genetic and molecular basis for a young NAFLD patient. • The individual had an obviously high concentration of Pin1 in blood plasma. • Nine PIN1 SNPs were measured and their NAFLD-pathogenic risks were predicted. • Pin1's clinical values will lie in early-diagnosis and precision treatment of NAFLD.
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- 2019
13. Will Residual Antibiotics in Hen Eggs Elicit Health Risks by Impairing Human Intestinal Microbiome?
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Dong Hong Deng, Jing Bai, Chong-Feng Li, Yan-Wei Liu, Rui-Ying Zhang, Jing-Zhang Wang, Yu-Hua Zhang, and Cheng-Rui Zhao
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medicine.drug_class ,Mechanism (biology) ,business.industry ,Antibiotics ,Cancer ,General Medicine ,Disease ,Microbial dysbiosis ,medicine.disease ,Inflammatory bowel disease ,Intestinal Microbiome ,Immunology ,medicine ,business ,Dysbiosis - Abstract
According to recent studies, food-borne microorganisms are closely related to human diseases, and dysbiosis of the intestinal microbiome was found to be a common pathogenic mechanism underlying several kinds of human diseases such as cancer, cardiovascular disease, inflammatory bowel disease, neural deficiency, etc
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- 2019
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14. Effects of different cutting centers on LASIK surgery in myopic patients
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Yan-Wei Liu, Wei Song, and Xing-Yan Xu
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genetic structures ,lcsh:Ophthalmology ,lcsh:RE1-994 ,laser assisted in situ keratomileusis ,sense organs ,pupil center ,cutting center ,visual axis corneal reflection point ,eye diseases ,visual quality - Abstract
AIM:To investigate the effect of different cutting centers on the visual acuity, refractive diopter and visual quality of patients undergoing laser assisted in situ keratomileusis(LASIK). METHODS: A total of 80 patients(160 eyes)with myopia treated by elective LASIK were divided into two groups. Thirty-six cases(72 eyes)with visual axis corneal reflection point(VACRP)as the cutting center were included into the VACRP group while 44 cases(88 eyes)with pupil center(PC)as the cutting center were included into the PC group. The uncorrected visual acuity(UCVA), the best corrected visual acuity(BCVA), refractive diopter, corneal aberration \〖total corneal and anterior corneal surface higher-order aberrations(HOA), spherical aberration(Z40), vertical coma(Z3-1), horizontal coma(totZ31)and offset of cutting centers were determined before surgery and 1mo after surgery. RESULTS: There was no difference in the probability of UCVA ≥ 0.1, BCVA and refractive diopter between the two groups at 1mo after surgery(P>0.05). The astigmatism and cutting center deviation of VACRP group were lower than those of PC group(P40, totZ3-1, totZ31, froHOA, froZ3-1、froZ31 and froZ40 were lower in VACRP group than PC group at 1mo after surgery(PCONCLUSION: The UCVA of patients treated with both cutting centers for LASIK is good but VACRP has more advantages in reducing the offset of cutting center and improving postoperative visual quality.
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- 2017
15. [Coupling mode of irrigation and shading for good quality and proper yield of Coffea arabica in dry-hot region]
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Xiao Gang, Liu, Yi Lin, Li, Yun Tao, Qi, Jin Huan, Cheng, Qi Liang, Yang, and Yan Wei, Liu
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Agricultural Irrigation ,Water ,Coffea ,Chlorogenic Acid - Abstract
In a field experiment with three levels of irrigation, i.e., CI, DI通过大田试验研究了灌水量分别为充分灌水的100%(CI)、75% (DI
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- 2018
16. Underground Runoff Product Flow of Red Loam under Rainfall Simulation
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Yan Wei Liu, Chuang Li, Na Fu, and Rui Tao Fang
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Hydrology ,Resource (biology) ,Agriculture ,business.industry ,Loam ,Soil water ,Environmental science ,General Medicine ,Vegetation ,Runoff curve number ,business ,Surface runoff ,Water content - Abstract
The red loam had abundant rainfall, rich in light and heat resource of Yunnan Province. But the uneven distribution of rainfall temporal during the year, it restricts the development of agriculture in this region. Thus how to use soil water resources reasonably and efficiency become the key to ensure crop and vegetation growth of needed water and improve the ecological environment. In this study, the key factor is district’s slope. Setting the runoff district’s rainfall intensity was 28.7mm/24h under rainfall simulation, selected four Yunnan Province read loam’ slop: 7.5°、10°、12.5°、15°.The results showed that at the same soil prophase water content and rainfall intensity, the higher runoff district’s slope will make it less time to product flow; At the beginning of product flow, flow of underground runoff was little, product flow was reached stable increase.
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- 2015
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17. miR-183-96-182 Cluster may not Work together in Bovine Ovarian Granulosa Cell Apoptosis
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Yu-Xiang Shi, Zhi-Chao Zhao, Yan-Wei Liu, Xiao-Yi Gao, Bin Wang, Teng-He Ma, and Gui-Da Ma
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medicine.anatomical_structure ,Veterinary physiology ,Ovarian Granulosa Cell ,Apoptosis ,Chemistry ,Cell ,medicine ,Veterinary microbiology ,Cell biology - Published
- 2017
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18. A QoS Channel Allocation Scheme for Enhancing the Reliability in 6TiSCH Networks
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Lin-Huang Chang, Yan-Wei Liu, and Tsung-Han Lee
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Channel allocation schemes ,business.industry ,Computer science ,Quality of service ,Reliability (computer networking) ,ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS ,Throughput ,Data_CODINGANDINFORMATIONTHEORY ,Transmission (telecommunications) ,Computer Science::Networking and Internet Architecture ,Wireless ,business ,Multipath propagation ,Computer Science::Information Theory ,Computer network ,Communication channel - Abstract
The recent IEEE 802.15.4-2015 standard proposes a number of Medium Access Control (MAC) layer protocols for low-power and lossy networks. The Timeslotted Channel Hopping (TSCH) is one of the proposed MAC operation modes, which take the advantage of channel hopping to make the transmissions more reliable and deterministic. In TSCH, slotframe is sliced into a timeslots and random channel hopping is used to mitigate the effects of co-channel interference and multipath fading. In this paper, we focus on the issue of random channel hopping in the error-prone wireless channel condition. In this research, a QoS Channel Allocation Scheme (QCAS) is proposed to enhance the reliability of emergency packet transmission in 6TiSCH networks. Based on our simulation results, we have observed that the proposed QCAS can achieve higher reliability of transmission over selected channel to provide higher throughput and higher delivery ratio than the original TSCH.
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- 2017
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19. RNA-seq of 272 gliomas revealed a novel, recurrent PTPRZ1-MET fusion transcript in secondary glioblastomas
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Kai Yu, Wei Zhang, Chuanbao Zhang, Wan Lu Ye, Chunsheng Kang, Xiao Guang Qiu, Clark C. Chen, Xiao Long Fan, Rui Qiang Li, Wei Yan, Valya Ramakrishnan, Jie Li, Kun Yao, Zhaoshi Bao, Mingyang Li, Hui Min Hu, Wei Sonya Song, Mingyu Yang, Yong ping You, Bo Qiang Hu, Yan Wei Liu, Tao Jiang, Hui Min Chen, Johnny C. Akers, Zheng Wang, Xiao-Dong Su, and Bob S. Carter
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Adult ,Male ,IDH1 ,Adolescent ,Oncogene Proteins, Fusion ,Oncogene Proteins ,Blotting, Western ,Biology ,Translocation, Genetic ,Young Adult ,Cell Line, Tumor ,Glioma ,Temozolomide ,Genetics ,medicine ,Humans ,neoplasms ,Antineoplastic Agents, Alkylating ,Genetics (clinical) ,Aged ,Brain Neoplasms ,Receptor-Like Protein Tyrosine Phosphatases, Class 5 ,Reverse Transcriptase Polymerase Chain Reaction ,Sequence Analysis, RNA ,Research ,Intron ,Chemoradiotherapy ,Middle Aged ,Proto-Oncogene Proteins c-met ,medicine.disease ,Molecular biology ,Fusion protein ,Introns ,Dacarbazine ,Gene Expression Regulation, Neoplastic ,HEK293 Cells ,Fusion transcript ,PTPRZ1 ,Female ,Glioblastoma ,Anaplastic astrocytoma - Abstract
Studies of gene rearrangements and the consequent oncogenic fusion proteins have laid the foundation for targeted cancer therapy. To identify oncogenic fusions associated with glioma progression, we catalogued fusion transcripts by RNA-seq of 272 gliomas. Fusion transcripts were more frequently found in high-grade gliomas, in the classical subtype of gliomas, and in gliomas treated with radiation/temozolomide. Sixty-seven in-frame fusion transcripts were identified, including three recurrent fusion transcripts: FGFR3-TACC3, RNF213-SLC26A11, and PTPRZ1-MET (ZM). Interestingly, the ZM fusion was found only in grade III astrocytomas (1/13; 7.7%) or secondary GBMs (sGBMs, 3/20; 15.0%). In an independent cohort of sGBMs, the ZM fusion was found in three of 20 (15%) specimens. Genomic analysis revealed that the fusion arose from translocation events involving introns 3 or 8 of PTPRZ and intron 1 of MET. ZM fusion transcripts were found in GBMs irrespective of isocitrate dehydrogenase 1 (IDH1) mutation status. sGBMs harboring ZM fusion showed higher expression of genes required for PIK3CA signaling and lowered expression of genes that suppressed RB1 or TP53 function. Expression of the ZM fusion was mutually exclusive with EGFR overexpression in sGBMs. Exogenous expression of the ZM fusion in the U87MG glioblastoma line enhanced cell migration and invasion. Clinically, patients afflicted with ZM fusion harboring glioblastomas survived poorly relative to those afflicted with non-ZM-harboring sGBMs (P < 0.001). Our study profiles the shifting RNA landscape of gliomas during progression and reveled ZM as a novel, recurrent fusion transcript in sGBMs.
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- 2014
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20. Core promoter regulates the expression of cathepsin B gene in the fat body of Bombyx mori
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Fang Yin, Xijie Guo, Xiang-Yun Cai, Jie Yu, Zhong-Zheng Gui, Hai-Yan Yu, Zi-Xu Ren, Yan-Wei Liu, Jun-Qiang Jia, Guozheng Zhang, and Byung-Rae Jin
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Fat Body ,Molecular Sequence Data ,Mutagenesis (molecular biology technique) ,Biology ,Cathepsin B ,Animals, Genetically Modified ,Bombyx mori ,Genetics ,Transcriptional regulation ,Animals ,Luciferase ,Luciferases ,Promoter Regions, Genetic ,Gene ,Expression vector ,Base Sequence ,fungi ,Metamorphosis, Biological ,Promoter ,General Medicine ,Bombyx ,biology.organism_classification ,Molecular biology ,Gene Expression Regulation ,Organ Specificity ,Mutagenesis, Site-Directed ,Insect Proteins ,hormones, hormone substitutes, and hormone antagonists - Abstract
Bombyx mori cathepsin B (BmCatB) is involved in the programmed cell death of the fat body during B. mori metamorphosis. For a better understanding of the functional regulatory mechanism, the promoter region of BmCatB in the transcriptional regulation has been identified and analyzed in the present study. BmCatB promoter region performed by the 5' truncation or mutagenesis of EcREs was inserted in the pFA3Luc-A3RL double fluorescence expression vector to activate the fireflies luciferase (FLuc) gene. The results indicated that the dual-luciferase activity of BmCatB gene in the silkworm larval fat body is regulated by the length of promoter. Site-directed mutagenesis of EcRE experiment has shown that the EcREs are up-regulated significantly in the regulation of the BmCatB promoter. A 142bp region (-1165 to -1023) and EcREs are the mainly fat-body tissue-specificity related region and could function as a core promoter element.
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- 2014
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21. An Effective Improved On-Demand Routing for LEO Satellite Networks
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Yan Wei Liu, Zhi Ren, Ji Bi Li, and Bao Yang Du
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Routing protocol ,Dynamic Source Routing ,Equal-cost multi-path routing ,Computer science ,computer.internet_protocol ,Routing table ,Real-time computing ,Enhanced Interior Gateway Routing Protocol ,Wireless Routing Protocol ,Geographic routing ,On Demand Routing ,Routing Information Protocol ,Destination-Sequenced Distance Vector routing ,Static routing ,Zone Routing Protocol ,Network packet ,business.industry ,Path vector protocol ,DSRFLOW ,General Medicine ,Distance-vector routing protocol ,Link-state routing protocol ,Multipath routing ,business ,computer ,Computer network - Abstract
In our Study, we Find that Location-Assisted on-Demand Routing (LAOR) Algorithm has Redundancy Control Overhead. Furthermore, LAOR does Not make Full Use of the Effective Information of New Path to Complete the Follow-up Path. to Address these Issues, an Improved Effective on-Demand Routing, Effective Improved on-Demand Routing (EIOR) Algorithm, is Proposed in this Paper. EIOR Makes Full Use of the Information of Control Packet to Update more Routing Paths, Reduces the Control Overhead for Finding Path and Increases the Real Time of Routing Updates. Moreover, EIOR Increases the Probability of Intermediate Satellite Replies Request Instead of the Destination Satellite, which Shortens the Setup Time of Path and Reduces the End-to-End Delay. it also Designs the RREP Immune Mechanism to Reduce the Control Overhead of the Network. Theoretical Analysis and Simulation Results Show that EIOR Outperforms LAOR. the EIOR can Reduce at Least 7% of the Normalized Control Overhead and 4% of the Average End-to-End Delay.
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- 2014
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22. Identification and characterization of a novel endoglucanase (CMCase) isolated from the larval gut of Bombyx mori
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Ying Fang, Ru-Jian Ma, Yan-Wei Liu, Chun-Yan Wang, Thasma Raman Sivakumar, Jun-Qiang Jia, Zi-Xu Ren, and Zhong-Zheng Gui
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inorganic chemicals ,Mucor ,Larva ,biology ,Strain (chemistry) ,fungi ,Fungus ,Cellulase ,biology.organism_classification ,18S ribosomal RNA ,Microbiology ,Biochemistry ,Bombyx mori ,Insect Science ,biology.protein - Abstract
While screening for cellulase-producing fungi from insect gut, a fungus with high endoglucanase (carboxymethyl cellulase; CMCase) activity was isolated from the larval gut of Bombyx mori. Based on morphological characteristics and using an 18S rRNA-based molecular phylogenetic approach, the fungus, strain BMC-2, was identified as a Mucor sp. expressing a novel alkalotolerant cellulase. The maximum production of cellulase by the BMC-2 strain was observed at 55 °C and pH 8.0. The CMCase activity was inhibited by Cu2 + > Na+ > Zn2 + > Mg2 + > Ba2 +, and induced by Ca2 +, Mn2 +, Fe2 +, and K+.
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- 2014
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23. Identification and functional analysis of the cathepsin D gene promoter of Bombyx mori
- Author
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Fengming Zou, Guo-Zheng Zhang, Byung-Rae Jin, Yan-Wei Liu, Fang Yin, Jun-Qiang Jia, Jie Yu, Xiang-Yun Cai, Feng-Yao Wu, Zhong-Zheng Gui, Hai-Yan Yu, Zi-Xu Ren, and Xijie Guo
- Subjects
biology ,viruses ,fungi ,Gene Expression Regulation, Developmental ,Cathepsin D ,Promoter ,General Medicine ,Bombyx ,biology.organism_classification ,Molecular biology ,law.invention ,Autographa californica ,Organ Specificity ,Bombyx mori ,Transcription (biology) ,law ,Larva ,Genetics ,Recombinant DNA ,Animals ,Ectopic expression ,Promoter Regions, Genetic ,Molecular Biology ,Gene - Abstract
The gene encoding cathepsin D of silkworm, Bombyx mori (BmCatD) is specifically expressed in the larval fat body and pupal gut, and plays an important role in the programmed cell death during metamorphosis. To identify element involved in this transcription-dependent spatial restriction, truncation and deletion of the 5' terminal from the BmCatD promoter were conducted in vivo. The recombinant AcMNPV vector (Autographa californica multiple nucleopolyhedrovirus) with a dual-luciferase quantitative assay system was used as the transfer. A 289 bp DNA sequence (-1,214 to -925) upstream of the transcriptional start site is found to be responsible for promoting tissue-specific transcription. Further analysis of a series of deletion within the 289 bp region of overlapping deletion showed that a 33 bp region (-1,071 to -1,038) sequence suppresses the ectopic expression of the BmCatD promoter. These results suggest that this 33 bp region could function as a promoter element in the tissue-specificity expression.
- Published
- 2014
- Full Text
- View/download PDF
24. Calculation Method of Natural Leymus chinensis Evapotranspiration under Shallow Groundwater Level Condition
- Author
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Yu Long Jing, Xiao Ping Han, and Yan Wei Liu
- Subjects
Hydrology ,biology ,Water transfer ,Evapotranspiration ,General Engineering ,Environmental science ,Leymus ,biology.organism_classification ,Water content ,Groundwater - Abstract
Natural Leymus Chinensis evapotranspiration in the Otindag sandy area under shallow ground-water level condition is calculated based on Soil-Water-Atmosphere-Plant (SWAP) Model developed by Wageningen Agricultural College. The observed values in open test and interior experiment, the meteorological observation and crop index, and the data of soil volumetric moisture content in 2005, are used to calibrate parameters of SWAP model, determine and check out the water transfer parameters of SWAP model with soil volumetric moisture content in 2006. The result shows that SWAP model has high precision and can be use to simulate evapotranspiration under shallow groundwater level condition.
- Published
- 2013
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- View/download PDF
25. A Community-Based Message Transmission Algorithm for Opportunistic Networks
- Author
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Shuang Peng, Zhi Ren, Ji Bi Li, and Yan Wei Liu
- Subjects
Community based ,business.industry ,Computer science ,Distributed computing ,Process (computing) ,General Medicine ,Division (mathematics) ,law.invention ,Transmission (telecommunications) ,Relay ,law ,business ,Algorithm ,Computer network - Abstract
In opportunistic networks, routing algorithms based on community division have some redundant forwarding in the process of message transmission. In this paper, we propose a community-based message transmission algorithm (CMTA). CMTA makes fully use of the nodes within communication overlapping areas to forward messages and optimizes forwarding determination mechanism to carry message nodes, then CMTA redesigns the message transmission condition and reduces the number of message forwarding which improve the efficiency of forwarding messages and reduce the average end-end delivery delay. Theoretical analysis and simulation results show that CMTA outperforms an existing Epidemic routing algorithm and the Prophet algorithm and CHMTS in terms of delivery ratio, average end-end delivery delay, relay ratio, etc.
- Published
- 2013
- Full Text
- View/download PDF
26. Research on Performance of the Cu-Based Friction Materials Repaired by Spark Plasma Sintering
- Author
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Cheng Chang Jia, Yan Wei Liu, and Jian Hua Du
- Subjects
Friction coefficient ,Materials science ,General Engineering ,Spark plasma sintering ,Composite material ,Microstructure - Abstract
The worn Cu-based friction disks were repaired and remanufactured by the spark plasma sintering (SPS) technology. The morphology and component of the repaired friction disk were analysed by SEM and EDS. The mechanical properties were characterized by microhardnessmeter and friction tester. The results indicated that the microstructure of the repaired areas combined closely with the worn areas and the components were well-distributed. The friction coefficient of the repaired materials is close to the unrepaired, but the hardness declined slightly.
- Published
- 2013
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- View/download PDF
27. Oxygen Diffusivity of La0.6Sr0.4Co0.2Fe0.8O3-δ Perovskite Oxide
- Author
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Yan Wei Liu and Zhe Lü
- Subjects
chemistry.chemical_compound ,chemistry ,Diffusion ,General Engineering ,Oxide ,chemistry.chemical_element ,Thermodynamics ,Dilatometer ,Conductivity ,Thermal diffusivity ,Oxygen ,Thermal expansion ,Perovskite (structure) - Abstract
La0.6Sr0.4Co0.2Fe0.8O3-δ composite oxide was prepared and characterized. Dilatometer and four-probe DC were exploited to investigate the thermal expansion and electrical conductivity, respectively. The thermal expansion curve was linear, but it became steeper at the high temperature region, as a result of the loss of lattice oxygen and the formation of oxygen vacancies. The conductivity increased with temperature up to about 600oC, and then decreased due to the loss of lattice oxygen. The maximum conductivity was more than 300 S cm-1. The chemical diffusion coefficient in La0.6Sr0.4Co0.2Fe0.8O3-δ was estimated by analyzing the conductivity relaxation behavior. The relaxation process of the conductivity change for La0.6Sr0.4Co0.2Fe0.8O3-δ was traced as a function of time, at a fixed temperature. It was found that the chemical diffusion coefficients measured at temperatures 720-770oC vary from 710-8 to 110-7 cm2 S-1. The activation energy for oxygen diffusion in La0.6Sr0.4Co0.2Fe0.8O3-δ, derived from the chemical diffusion coefficient is 40.8±3.6 kJ mol-1.
- Published
- 2012
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28. Combine Empirical Equation with Experiment for Prediction of Soil Saturated Hydraulic Conductivity
- Author
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Yan Wei Liu and Zhong Yuan Zhu
- Subjects
Empirical equations ,Complete data ,Engineering ,Hydraulic conductivity ,Mean squared error ,Pedotransfer function ,Soil texture ,business.industry ,General Engineering ,Geotechnical engineering ,Function (mathematics) ,business ,Representation (mathematics) - Abstract
In order to improve simulation precision of saturated hydraulic conductivity, use RETC and PTFs function to simulate saturated hydraulic conductivity by measured research area surface soil (0-20cm) physicochemical property and soil texture data. The simulation results were assessed by the approach of consisting in presenting a graphical representation of model simulated compared with observed values and by mean square error. The main results indicate that the RETC-PTFs and local PTFs mean square errors are 1.19 and 0.40 respectively. The precision of RETC-PTFs is lower than local PTFs function obviously using soil physicochemical property and soil texture data. The RETC-PTFs is inappropriate to this area. Accuracy of each input data precision of RETC-PTFs play a big part in because of less data needed. More complete data not always get better simulating results.
- Published
- 2012
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- View/download PDF
29. Research on Thermal-Insulating Material and Roadway Cooling with High Geotherm
- Author
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Yan Wei Liu, Guo Fu Li, and Xiao Yong Liu
- Subjects
Thermal conductivity ,Compressive strength ,Materials science ,Thermal ,Airflow ,General Engineering ,Coupling (piping) ,Mechanical engineering ,Geothermal gradient - Abstract
The research aims to develop inorganic thermal-insulating materials of high performance, decrease high geothermal emissions from hot rock to the roadway, reduce the roadway airflow temperature, and achieve mine cooling and energy saving eventually. Firstly, the best proportion of inorganic thermal-insulating materials of high performance was designed, and a test model for thermal conductivity and mechanical analysis has been built. And through the test of thermal-insulating of the material and mechanical properties, the relation equations between vitreous micro-bead content (the main agent of thermal-insulating material) and thermal conductivity, uniaxial compressive strength, confined compressive strength have been obtained respectively. Secondly, the feature, the fitting and coupling features between the experimental models and engineering conditions in practice were analyzed comparatively, which could provide theoretical basis for the design and application of thermal-insulating materials of high performance. The industrial test shows that with thermal-insulating materials of high performance in application, the roadway airflow temperature was reduced significantly and could meet the requirements of mine pressure. Therefore, the research could offer an effective way for the mine thermal-insulating and cooling under high geothermal conditions.
- Published
- 2012
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- View/download PDF
30. Research on Rapid Excavation Technology of Roadway in Coal Seam with the Risk of Coal and Gas Outburst
- Author
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Jian Hua Guo, Bai Sheng Nie, Xiang Chun Li, Shou Tao Hu, Ming Ju Liu, and Yan Wei Liu
- Subjects
Engineering ,Heading (navigation) ,Petroleum engineering ,business.industry ,General Engineering ,Coal mining ,Drilling ,Excavation ,Coal ,business - Abstract
According to the questions of long eliminating coal and gas outburst period, large projects and slow driving came from the regional measurement of drilling hole ,the paper select 2371 (1) rail transport roadway as experiment for using along seam long drilling as a regional measurement to eliminate coal and gas outburst. Since the regional measurement of along seam long drilling had been carried out, the remaining gas content decreased more than 60%, max Smax was 5.4kg/m, max qmax was 2.01/min.Both Smax and qmax were not beyond the standard. Gas concentrations were not overrun. Gas emission decreased in the roadway afterward. The regional measurement eliminated the risk of coal and gas outburst in effect. Heading face promoted 423m forward safely. The max January footage could reach 120m.Achieve driving of heading face safely and fast.
- Published
- 2012
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- View/download PDF
31. Mechanical Properties Analysis of Heat Insulation Structure in High Temperature Circular Roadway
- Author
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Guo Fu Li, Yuan Ping Chen, and Yan Wei Liu
- Subjects
Pipe insulation ,Vacuum insulated panel ,Materials science ,Compressive strength ,Thermal insulation ,business.industry ,Active cooling ,General Engineering ,Composite material ,business ,Shotcrete ,Layer (electronics) ,Dynamic insulation - Abstract
Roadway insulation and active cooling supporting structure is a complex system, and the mechanical properties play an important roal in its safety. Analyse the shotcrete layer pattern heat insulation structure by Midas-GTS software, calculation results shows that tensile stress zone appears in the top and bottom of heat insulation layer, while the will compressive stress area appears in two sides of the roadway insulation layer; in the case of 500m buried depth, heat insulation layer material, such as vitreous micro-bead, can well meet the engineering mechanical strength requirements.
- Published
- 2012
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- View/download PDF
32. Shift Quality and Optimal Control of an Uninterrupted Shift Transmission Based on Overrunning Mechanism
- Author
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Yan Wei Liu, Rong Shan Yang, Ke Gang Zhao, and Xiang Dong Huang
- Subjects
Engineering ,Quality (physics) ,Simplex algorithm ,Transmission (telecommunications) ,business.industry ,Control theory ,Powertrain ,Genetic algorithm ,Clutch ,General Medicine ,Optimal control ,business ,Slip (vehicle dynamics) - Abstract
Working principle of an uninterrupted shift transmission (UST) based on overrunning mechanism and its driveline dynamic model, as well as shift control strategy are studied. For shift quality optimization, the throttle control parameters are calculated based on simplex method and genetic algorithm. Using the control strategy and optimized parameters, simulation results show that jerks and clutch slip during shift are controlled well, satisfactory shift quality is obtained without power flow interruption.
- Published
- 2011
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33. Discussion of the indexes of nonoutburst coal seam upgrade and its corresponding critical value
- Author
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Ming-ju Liu, Lei Meng, Jian-ping Wei, and Yan-wei Liu
- Subjects
Engineering ,Upgrade ,Mining engineering ,business.industry ,Coal mining ,Energy Engineering and Power Technology ,Coal ,Research Object ,Laboratory experiment ,Geotechnical Engineering and Engineering Geology ,business ,Critical value ,complex mixtures - Abstract
In view of the measurement difficulties of indexes recommended by the 50 Items Experience of Coal Mine Gas Prevention in the process of the nonoutburst coal seam upgrade, this paper took the No.8 coal seam of Huainan Mining Group as research object. Discussed the suitability of indexes and corresponding critical values, put forward method in determining the indexes and its critical values by analysis and investigation of the gas geological condition and the-spot tracking near position where an outburst occurred combined with laboratory experiment, and established the indexes and its critical values of nonoutburst coal seam upgrade in No.8 coal seam of Huainan Mining Group. The results show that it is suitable to take gas content and tectonic soft coal thickness easily to gain in routine production as primary upgrade indexes that its critical values are 7.5 m3/t and 0.8 m, respectively. In addition, take f value and Δp value as auxiliary indexes.
- Published
- 2009
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34. Screening and identification of differentially expressed genes in myocardial ischaemia/reperfusion injury using suppression subtractive hybridization
- Author
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Kai Wang, Shui-Ping Liu, Yu-Chuan Chen, Jian-Ding Cheng, and Yan-Wei Liu
- Subjects
Male ,Myocardial Ischemia ,Gene Expression ,Cell Cycle Proteins ,Myocardial Reperfusion Injury ,Biology ,Rats, Sprague-Dawley ,Pathogenesis ,Transduction (genetics) ,Complementary DNA ,Gene expression ,medicine ,Animals ,Gene ,Reverse Transcriptase Polymerase Chain Reaction ,Gene Expression Profiling ,General Medicine ,medicine.disease ,Molecular biology ,Rats ,Gene expression profiling ,Disease Models, Animal ,Suppression subtractive hybridization ,RNA ,Cardiology and Cardiovascular Medicine ,Reperfusion injury - Abstract
Myocardial ischaemia/reperfusion (MI/R) injury is characterized by metabolic and ultrastructural changes, which lead to irreversible injury. Several mechanisms have been postulated for the pathogenesis of MI/R injury although little is known regarding the role of myocardial gene expression.In this study, suppression subtractive hybridization (SSH) was employed to systematically isolate and screen the differentially expressed genes in the MI/R injury rat model. The characteristics of these specific genes were analysed using bioinformatics. Our results showed that among the 119 identified genes, 54 genes were expressed at higher levels and 65 genes were at lower levels compared with the control group.These genes are closely associated with energy metabolism, iron transport, signalling transduction and may provide important clues for the elucidation of the mechanisms of MI/R injury. Our results further indicated that myocardial injury is likely the result of summation of functional impairment of multiple genes rather than the result of damage to a single critical gene.
- Published
- 2008
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- View/download PDF
35. Regularity of hypoxia inducible factor 1 alpha expression in acute myocardial ischaemia in rats
- Author
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Yu-Chuan Chen, Yan-Wei Liu, Yong Wang, Hao-Wei Xing, Zhi-Gang Li, Jiang-Feng Wang, and Jian-Ding Cheng
- Subjects
Male ,Asphyxia ,Myocardial ischaemia ,medicine.medical_specialty ,Reverse Transcriptase Polymerase Chain Reaction ,business.industry ,Blotting, Western ,Myocardial Ischemia ,General Medicine ,Hypoxia-Inducible Factor 1, alpha Subunit ,Immunohistochemistry ,Sudden death ,Rats ,Rats, Sprague-Dawley ,Hypoxia-Inducible Factor 1-Alpha ,Gene Expression Regulation ,Internal medicine ,Acute Disease ,medicine ,Cardiology ,Animals ,Acute myocardial ischaemia ,medicine.symptom ,business - Published
- 2007
- Full Text
- View/download PDF
36. Clinical Observations and Microbiological Examinations in Quarantine of Chinese-Origin Cynomolgus Monkeys
- Author
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Hiroshi Tokado, Koichiro Fukuzaki, Yan-Wei Liu, Hiroshi Sakamoto, and Hiroaki Miyajima
- Subjects
law ,business.industry ,Quarantine ,Chinese origin ,Medicine ,business ,Virology ,law.invention - Published
- 2007
- Full Text
- View/download PDF
37. [Effects of irrigation amount on morphological characteristics and water use of Jatropha curcas]
- Author
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Qi-Liang, Yang, Jing, Zhang, Xiao-Gang, Liu, Yan-Wei, Liu, and Ju-Rui, Yang
- Subjects
Plant Leaves ,Soil ,Agricultural Irrigation ,Seedlings ,Water ,Jatropha ,Biomass ,Plant Roots ,Triticum ,Droughts - Abstract
Jatropha curcas is the most promising energy tree, and soil moisture is the key factor which affects the seedling quality and water use efficiency of J. curcas. With aims to evaluate the effect of different irrigation amount on growth, morphological characteristics and water use of J. curcas, a pot experiment was conducted with four irrigation amounts, i. e., W1:472.49 mm, W2: 228.79 mm, W3:154.18 mm and W4:106.93 mm, respectively. Compared with W1 treatment, the leaf area and stem cross-section area of base significantly decreased in W2, W3 and W4 treatments, but Huber value significantly increased, which could improve the efficiency of water transfer from root to shoot, thus enhance the capability of resistance to drought stress. Compared with W, treatment, the healthy index of J. curcas seedlings decreased slightly in W2 treatment but significantly decreased in W3 and W4 treatments. Hence, the irrigation amount from 228.79 to 472.49 mm was beneficial to increase the healthy index of J. curcas seedlings. Compared with W1 treatment, irrigation water was saved by 67.4% in W3 treatment, and the total dry mass and evapotranspiration significantly decreased by 17.4% and 68.6%, and the irrigation water use efficiency and total water use efficiency increased by 153.2% and 163.2%, respectively. In the condition of this study, the irrigation amount of 154.18 mm was beneficial to increase water use efficiency.
- Published
- 2014
38. Low Temperature Polycrystalline Silicon Thin Film Transistor Pixel Circuits for Active Matrix Organic Light Emitting Diodes
- Author
-
Yan-Wei Liu, Yu-Sheng Lin, and Ching-Lin Fan
- Subjects
Materials science ,business.industry ,Transistor ,Low-temperature polycrystalline silicon ,engineering.material ,Electronic, Optical and Magnetic Materials ,Active matrix ,law.invention ,Threshold voltage ,Polycrystalline silicon ,AMOLED ,law ,Thin-film transistor ,OLED ,engineering ,Optoelectronics ,Electrical and Electronic Engineering ,business - Abstract
A new pixel design and driving method for active matrix organic light emitting diode (AMOLED) displays that use low-temperature polycrystalline silicon thin-film transistors (LTPS-TFTs) with a voltage programming method are proposed and verified using the SPICE simulator. We had employed an appropriate TFT model in SPICE simulation to demonstrate the performance of the pixel circuit. The OLED anode voltage variation error rates are below 0.35% under driving TFT threshold voltage deviation (Δ Vth =± 0.33V). The OLED current non-uniformity caused by the OLED threshold voltage degradation (Δ VTO =+0.33V) is significantly reduced (below 6%). The simulation results show that the pixel design can improve the display image non-uniformity by compensating for the threshold voltage deviation in the driving TFT and the OLED threshold voltage degradation at the same time.
- Published
- 2010
- Full Text
- View/download PDF
39. Hedging Based Price Decline Risk Management of Refined Oil Inventory
- Author
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Xing Bi, Yao-long Zhang, and Yan-wei Liu
- Subjects
Inventory management ,Inventory valuation ,Financial economics ,Order (exchange) ,business.industry ,Oil demand ,Economics ,Hedge ratio ,Oil price ,business ,Energy source ,Risk management - Abstract
Nowadays oil has become an important energy source with both political and economic attributes. Frequent fluctuation of oil demand and price in the international market confronts enterprises with many uncertainties in refined oil inventory management. In order to prevent the risk of oil price decline brought up by those uncertainties, this article analyzed the inventory methods of different refined oil, chose hedging as the method to manage price decline risks of oil inventory, compared the different optimal hedge ratio models, and made empirical analysis to gasoline hedging.
- Published
- 2013
- Full Text
- View/download PDF
40. Gene expression profiling reveals Ki-67 associated proliferation signature in human glioblastoma
- Author
-
Qiang, Jin, Wei, Zhang, Xiao-guang, Qiu, Wei, Yan, Gan, You, Yan-wei, Liu, Tao, Jiang, and Lei, Wang
- Subjects
Ki-67 Antigen ,Gene Expression Profiling ,Computational Biology ,Humans ,In Vitro Techniques ,Glioblastoma ,Immunohistochemistry ,Cell Proliferation ,Oligonucleotide Array Sequence Analysis - Abstract
Everlasting cellular proliferation is the fundamental feature during gliomagenesis and Ki-67 is one of the classical proliferation markers in human glioblastoma multiforme (GBM). However, the driver genes or core pathways for cellular proliferation in GBM have not been elucidated systematically.We evaluated by immunohistochemistry the prognostic value of Ki-67 expression in the clinical outcome of 156 Chinese patients with GBM and a total of 64 GBM samples were selected for further Agilent genome-wide microarray analysis. On the basis of the microarray data from Tiantan (n = 64) and The Cancer Genome Atlas (TCGA) (n = 202) database, differentially expressed genes between the GBM subgroups with high or low level of Ki-67 expression were identified using Significance Analysis of Microarrays (SAM). Gene Ontology (GO) and KEGG Pathway analyses were then undertaken for the Ki-67 associated genes to identify the most significant biological processes and signaling pathways.We confirmed that Ki-67 was an independent prognostic indicator in the largest Chinese patient cohort of 156 GBM samples via immunohistochemical staining. Survival analysis of Ki-67 over-expression revealed a highly significant association with a worse clinical outcome (P = 0.010 for progression-free survival; P = 0.007 for overall survival). Comparative and integrated analysis between Tiantan and TCGA database identified a 247-gene "proliferation signature" (205 up-regulated and 42 down-regulated genes) that distinguished Ki-67 expression phenotypes. GO and KEGG Pathway analyses further indicated that Ki-67 expression phenotype was associated with distinct changes in gene expression associated with the regulation of cellular growth and proliferation.Proliferation marker Ki-67 is an independent prognostic indicator in Chinese GBM patients. And Ki-67 associated proliferation signature identified through genome-wide microarray analysis may provide potential targets for anti-proliferation therapy in GBM.
- Published
- 2011
41. An AMOLED AC-Biased Pixel Design Compensating the Threshold Voltage and I-R Drop
- Author
-
Ching-Lin Fan, Hui-Lung Lai, and Yan-Wei Liu
- Subjects
Materials science ,Article Subject ,Renewable Energy, Sustainability and the Environment ,business.industry ,lcsh:TJ807-830 ,Transistor ,lcsh:Renewable energy sources ,General Chemistry ,Voltage regulator ,Integrated circuit ,Hardware_PERFORMANCEANDRELIABILITY ,LED circuit ,Atomic and Molecular Physics, and Optics ,law.invention ,Threshold voltage ,Capacitor ,law ,Hardware_INTEGRATEDCIRCUITS ,Optoelectronics ,General Materials Science ,business ,Low voltage ,Voltage drop ,Hardware_LOGICDESIGN - Abstract
We propose a novel pixel design and an AC bias driving method for active-matrix organic light-emitting diode (AM-OLED) displays using low-temperature polycrystalline silicon thin-film transistors (LTPS-TFTs). The proposed threshold voltage andI-Rdrop compensation circuit, which comprised three transistors and one capacitor, have been verified to supply uniform output current by simulation work using the Automatic Integrated Circuit Modeling Simulation Program with Integrated Circuit Emphasis (AIM-SPICE) simulator. The simulated results demonstrate excellent properties such as low error rate of OLED anode voltage variation (%) and low voltage drop ofVDDpower line. The proposed pixel circuit effectively enables threshold-voltage-deviation correction of driving TFT and compensates for the voltage drop ofVDDpower line using AC bias on OLED cathode.
- Published
- 2011
- Full Text
- View/download PDF
42. [Detecting fire smoke based on the multispectral image]
- Author
-
Ying-Zhuo, Wei, Shao-Wu, Zhang, and Yan-Wei, Liu
- Abstract
Smoke detection is very important for preventing forest-fire in the fire early process. Because the traditional technologies based on video and image processing are easily affected by the background dynamic information, three limitations exist in these technologies, i. e. lower anti-interference ability, higher false detection rate and the fire smoke and water fog being not easily distinguished. A novel detection method for detecting smoke based on the multispectral image was proposed in the present paper. Using the multispectral digital imaging technique, the multispectral image series of fire smoke and water fog were obtained in the band scope of 400 to 720 nm, and the images were divided into bins. The Euclidian distance among the bins was taken as a measurement for showing the difference of spectrogram. After obtaining the spectral feature vectors of dynamic region, the regions of fire smoke and water fog were extracted according to the spectrogram feature difference between target and background. The indoor and outdoor experiments show that the smoke detection method based on multispectral image can be applied to the smoke detection, which can effectively distinguish the fire smoke and water fog. Combined with video image processing method, the multispectral image detection method can also be applied to the forest fire surveillance, reducing the false alarm rate in forest fire detection.
- Published
- 2010
43. Measurement and Analysis on Biofilm Bacteria of the Pipe Wall in Water Distribution System
- Author
-
Yan-wei Liu, Hui-na Liu, and Yi-mei Tian
- Subjects
Distribution system ,Pipeline transport ,biology ,Microorganism ,education ,Biofilm ,Environmental engineering ,Environmental science ,Water quality ,biochemical phenomena, metabolism, and nutrition ,Water pollution ,biology.organism_classification ,Bacteria - Abstract
The microbial re-growth of the pipe wall biofilm in water distribution system may endanger the safety of drinking water, so it is necessary to research the biofilm microbe. In order to study the diversity and growth of biofilm bacteria, a model pipe network which dynamic simulated the distribution system was designed. The bacteria of the model biofilm were cultivated by using R2A. The results shows that temperature and pipe materials are primary factors in the water quality indicators, and the PE and UPVC pipe are better than galvanized steel pipe in the three testing Materials.
- Published
- 2010
- Full Text
- View/download PDF
44. Clinical pathology data from cynomolgus monkeys from China in which diarrhea was observed during quarantine
- Author
-
Masatoshi Kashima, Koichiro Fukuzaki, Hiroshi Tokado, Syusaku Suzuki, Hiroaki Miyajima, and Yan-Wei Liu
- Subjects
Diarrhea ,Male ,medicine.medical_specialty ,Pathology ,China ,Physiology ,Environment ,General Biochemistry, Genetics and Molecular Biology ,law.invention ,law ,Stress, Physiological ,Internal medicine ,Quarantine ,medicine ,Animals ,Animal Husbandry ,Fatigue ,Hematology ,Hematologic Tests ,Pathology, Clinical ,General Veterinary ,Clinical pathology ,Blood biochemistry ,business.industry ,Platelet Count ,Significant difference ,Monkey Diseases ,General Medicine ,Alkaline Phosphatase ,Normal group ,Macaca fascicularis ,Animal Science and Zoology ,Female ,medicine.symptom ,Abnormality ,business ,Blood Chemical Analysis - Abstract
Shin Nippon Biomedical Laboratories, Ltd. (SNBL) imported and quarantined 3,148 cynomolgus monkeys (aged 2.5 to 6.5 years) from China in 2002. The hematology and blood biochemistry data obtained from these monkeys on Day 32 of quarantine were analyzed separately by sex [2,890 animals in which no abnormalities were observed during the 35-day quarantine period (normal group), and 258 animals which exhibited diarrhea 1 to 12 times (diarrhea group)]. The values obtained for all parameters were within the normal range (mean +/- SD), and no significant abnormalities were noted in either sex. The clinical pathology data from 11 animals (6 males and 5 females) exhibiting diarrhea repeatedly (10 to 12 times) were statistically analyzed, and significant differences were noted in PLT and ALP in both sexes. The PLT values of these animals were within the normal group mean +/- 2 SD, and were considered within the normal range. A significant difference was noted in some individual ALP values (males: Nos. 2 and 3, females: Nos. 1, 3, and 4). The clinical pathology data obtained from the normal group in this study basically correspond to the widely reported results already obtained from healthy cynomolgus monkeys, from which it can be concluded that the cynomolgus monkeys from China were generally healthy and presenting no particular abnormality. The clinical pathology data from the normal group will serve as valuable baseline data for experimenters using cynomolgus monkeys.
- Published
- 2008
45. Spectral Study on the Photoreduction of Cytochrome c under Macromolecular Crowding
- Author
-
Xue-Fang Zheng, Qian Tang, Yan-Wei Liu, and Hong-Yu Cao
- Subjects
Absorption spectroscopy ,biology ,Cytochrome c ,Inorganic chemistry ,General Chemistry ,Photochemistry ,Porphyrin ,Fluorescence ,chemistry.chemical_compound ,chemistry ,medicine ,biology.protein ,Ferric ,Absorption (chemistry) ,Macromolecular crowding ,Macromolecule ,medicine.drug - Abstract
The ferric Cyt c can be photoreduced to the ferrous state by photoexcitation in dilute solution. However, these researches neglected the high crowded conditions in cell environment. In this work, we applied UV-Vis absorption, synchro- nous fluorescence and CD spectra to study the photoreduction process of Cyt c and its dependence on the external environ- ment under macromolecular crowded conditions. The UV-Vis absorption spectrum data showed that with addition of Dex- tran70 or Ficoll70 the hydrophobic microenvironment of heme in Cyt c was changed and the photoreduction process of Cyt c was facilitated. In addition, the photoreduction extent was much larger in Ficoll70 solution than that in Dextran70. Under macromolecular crowded conditions, we used four wavelengths of light to irradiate Cyt c samples and found that the 280 nm light was favored for the reduction. The optimum temperatures of photoreduction process were 37 ℃ and 25 ℃ in the pres- ence of Dextran70 and Ficoll70, respectively. The concentration of macromolecular crowding reagents had massive influence on the photoreduction process. Photoreduction extent showed an increase with rising the concentration of Dextran70 and the optimum concentration of Ficoll70 for the photoreduction was 100 gL -1 . The photoreduction process was promoted by add- ing external amino acids and the relative rates of photoreduction with amino acids followed the order Phe>Tyr>Trp>Met. Synchronous fluorescence spectra data suggested that Dextran70 and Ficoll70 were able to emit fluorescence which was ab- sorbed by porphyrin. The CD spectra results of Cyt c after irradiation illustrated that the secondary structure of protein varied with α-helix decreased, and β-sheet increased in dilute solution, but remained unchanged after irradiation under macromo- lecular crowding solutions. Based on the data, macromolecular crowded conditions could maintain a stable structure of Cyt c and promote its photoinduced electronic transfer and reduction process. Keywords macromolecular crowding environment; photoreduction; Cytochrome c; spectroscopy; secondary structure
- Published
- 2014
- Full Text
- View/download PDF
46. Therapeutic effect evaluation of frequency-doubled Nd:YAG laser trabeculoplasty
- Author
-
Zi-kui Yu, Hai-yun Shi, Kang-sun Wang, and Yan-wei Liu
- Subjects
ITS Studies ,Materials science ,Trabeculoplasty ,business.industry ,medicine.medical_treatment ,Therapeutic effect ,Laser trabeculoplasty ,Laser ,law.invention ,X-ray laser ,Optics ,law ,Diode-pumped solid-state laser ,Frequency doubled Nd:YAG laser ,medicine ,business - Abstract
Laser trabeculoplasty (LPT) has been in clinical use for more than ten years, most of its studies were about argon laser LPT, in this study we aimed to evaluate the therapeutic effect of frequency-doubled Nd:YAG laser trabeculoplasty.© (1998) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
- Published
- 1998
- Full Text
- View/download PDF
47. A New Low Temperature Polycrystalline Silicon Thin Film Transistor Pixel Circuit for Active Matrix Organic Light Emitting Diode
- Author
-
Jyu-Yu Chang, Bo-Jhang Sun, Ching-Lin Fan, Yan-Wei Liu, and Yi-Yan Lin
- Subjects
Materials science ,business.industry ,Low-temperature polycrystalline silicon ,Transistor ,General Engineering ,General Physics and Astronomy ,Oxide thin-film transistor ,Active matrix ,law.invention ,Threshold voltage ,AMOLED ,law ,Thin-film transistor ,OLED ,Optoelectronics ,business - Abstract
This study presents one novel compensation pixel design and driving method for active matrix organic light-emitting diode (AMOLED) displays that use low-temperature polycrystalline silicon thin-film transistors (LTPS-TFTs) with a voltage feed-back method and the simulation results are proposed and verified by SPICE simulator. The measurement and simulation of LTPS TFT characteristics demonstrate the good fitting result. The proposed circuit consists of four TFTs and two capacitors with an additional signal line. The error rates of OLED anode voltage variation are below 0.3% under the threshold voltage deviation of driving TFT (ΔV TH = ±0.33 V). The simulation results show that the pixel design can improve the display image non-uniformity by compensating the threshold voltage deviation of driving TFT and the degradation of OLED threshold voltage at the same time.
- Published
- 2010
- Full Text
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