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Copyright of Journal of Clinical Nursing in Practice is the property of Journal of Clinical Nursing in Practice (Editorial Board, Shanghai Jiao Tong University Press) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Modern Medicine & Health is the property of Journal of Modern Medicine & Health and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

BACKGROUND: Jaws are most vulnerable to osteoporosis. Adipose-derived mesenchymal stem cells and bone morphogenetic protein 2 have the effect of promoting bone regeneration in osteoporosis. However, the repair effect of bone morphogenetic protein 2 modified adipose-derived mesenchymal stem cells on alveolar bone defects in osteoporosis is rarely reported. OBJECTIVE: To explore the repair effect of adipose-derived mesenchymal stem cells overexpressing bone morphogenetic protein 2 on alveolar bone defects in osteoporosis rats. METHODS: (1) The rat adipose-derived mesenchymal stem cells were infected with lentivirus overexpressing bone morphogenetic protein 2 gene, and identified by detecting the expression of green fluorescent protein and bone morphogenetic protein 2. (2) Osteoporosis rat model was established by ovariectomy. A 3 mm × 3 mm × 3 mm cylindrical defect was prepared at the first molar position on both sides of the upper jaw. (3) Gelatin sponge was implanted in rats of the sham operation group and osteoporosis group. In the adipose-derived stem cell group, the adipose-derived mesenchymal stem cells infected with empty vector lentivirus and gelatin sponge complex were implanted. In the adipose-derived mesenchymal mesenchymal stem cell group overexpressing bone morphogenetic protein 2, a complex of adipose-derived mesenchymal stem cells overexpressing bone morphogenetic protein 2 and gelatin sponge was implanted. Relevant indexes were tested one month later. RESULTS AND CONCLUSION: (1) The transfection efficiency of the adipose-derived mesenchymal stem cell group and adipose-derived mesenchymal stem cell group overexpressing bone morphogenetic protein 2 reached more than 70%. Compared with the adipose-derived mesenchymal stem cell group, the level of bone morphogenetic protein-2 protein in the adipose-derived mesenchymal stem cell group overexpressing bone morphogenetic protein-2 was significantly higher (P < 0.05). (2) A large amount of new bone could be seen in the bone defect area of the sham operation group. Compared with the sham operation group, the osteoporotic group had a small amount of new bone formation; the new bone area was significantly reduced, and alkaline phosphatase, osteocalcin, and bone morphogenetic protein 2 mRNA and protein levels were significantly reduced. Compared with the osteoporosis group, the adiposederived mesenchymal stem cell group and the adipose-derived mesenchymal stem cell group overexpressing bone morphogenetic protein 2 had a large number of new bone formation; the area of new bone was significantly increased, and the levels of alkaline phosphatase, osteocalcin, and bone morphogenetic protein 2 mRNA and protein were significantly increased. Moreover, the adipose-derived mesenchymal stem cell group overexpressing bone morphogenetic protein 2 was superior to the adipose-derived mesenchymal stem cell group (all P < 0.05). (3) The results showed that bone morphogenetic protein 2 was less expressed in the alveolar bone of osteoporosis rats, and adipose-derived mesenchymal stem cells overexpressing bone morphogenetic protein 2 could promote osteogenesis and regeneration of alveolar bone defects in osteoporosis rats. [ABSTRACT FROM AUTHOR]

Copyright of China Forest Products Industry is the property of China Forest Products Industry Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Sciencepaper is the property of China Sciencepaper and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

员工创造性绩效影响机制的研究缺乏对认知、动机和情感机制交互作用的探讨，工作激情是进行3种影响机制融合研究的最佳变量.以204名企业员工及其对应主管为研究对象，采用两时点滞后的纵向研究方法，以激情二元模型为基础，以认知投入、成就目标导向和情绪调节作为代表变量，对员工工作激情影响创造性绩效的认知、动机和情感机制的整合路径进行研究.结果表明：和谐的工作激情同时通过动机通道（掌握趋近目标导向）和情感通道（认知重评与表达抑制两种情绪调节策略）作用于认知机制（认知投入），进而影响创造性绩效；强迫的工作激情仅通过动机通道（绩效趋近目标导向与绩效回避目标导向）作用于认知机制（认知投入），进而影响创造性绩效.

XRD，TEM，N2-吸附等表征手段表明，在700 ℃下以碳热氢还原方法制备的粒径在1~4 nm的β-Mo2C，能够均匀分散在活性炭载体上.在温和条件（100 ℃，氢压1.0 MPa， 3 h）下，以水作为反应溶剂，质量分数为20.0%的Mo2C/AC催化剂催化香兰素的加氢脱氧反应转化率高达93.2%，2-甲氧基-4-甲基苯酚的选择性达到53.8%.随着负载量的增加，Mo2C/AC催化剂的比表面积呈下降趋势，其活性先增强后减弱，而当负载量增加到一定程度后，Mo2C粒子在载体上发生团聚，导致催化活性大幅度降低.根据原料和产物浓度随时间的变化曲线，提出加氢脱氧反应以香兰醇作为中间产物，经过2步加氢步骤生成2-甲氧基4-甲基苯酚，且第1步加氢反应速率大于第2步.使用多次后，Mo2C/AC催化剂的催化活性几乎不变，说明其具有工业应用前景.

Copyright of China Rural Water & Hydropower is the property of China Rural Water & Hydropower Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Modern Laboratory Medicine is the property of Journal of Modern Laboratory Medicine Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Acta Materiae Compositae Sinica is the property of Acta Materiea Compositae Sinica Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Accurate monitoring of soil moisture content (SMC) in agricultural fields can greatly contribute to the utilization of water resources and sustainable development. Low SMC can cause the soil to harden during crop growth, which in turn affects the absorption of the crops' water and nutrients. In this study, the field-scale wheat canopy spectra were gathered to quantitatively estimate and map the SMC using an unmanned aerial vehicle (UAV) hyperspectral sensor. The study area was selected as Fukang City, Xinjiang Uygur Autonomous Region, China (87°51'15′′E, 44°21'14′′N) at the transition zone between a desert and an oasis. The soil samples were also collected concurrently with the hyperspectral data. 70 sampling units of 0.5 m×0.5 m were evenly selected in the target field, where the GPS locations were recorded. The wheat canopy spectra were smoothed using the savitzky-golay (SG). The spectral data were then transformed using the continuous wavelet transform (CWT) with seven different wavelet functions (bior4.4, coif4, db4, fk14, haar, rbio3.9, and sym 4). The wavelet coefficients were extracted by the genetic algorithm (GA), and finally combined with partial least squares (PLSR), Support Vector Machine (SVM), artificial neural network (ANN), radom forest (RF), and extreme gradient boosting (XGBoost) to predict the SMC. A neural Network was used to predict the SMC, and then map the SMC at a spatial scale. The results demonstrate that the accuracy of SMC estimation greatly increased using the GA-based feature band selection. The determination coefficient (R²) of the feature band was 0.35-0.82 with the wavelet coefficients, while the R² of the complete wavelet band ranged from 0.20 to 0.44. Furthermore, the R² of SMC reached 0.82, 0.72, 0.79, 0.76, and 0.46, respectively, using PLSR, SVM, ANN, RF, and XGBoost models. The best estimation accuracy was achieved in the feature band with the db4 wavelet coefficients, compared with the rest wavelet functions. The predicted and measured values were remarkably similar. The GA significantly reduced the number of variables to maximize the feature factors in the remote sensing bands. The majority of the feature bands were retained to remove the redundant bands that frequently presented in the hyperspectral data. The more stable ANN model was achieved in the small number of sample points on the big sample, even though the accuracy was lower than that of PLSR. Consequently, the perfect estimation accuracy of SMC with excellent mapping was obtained in the continuous wavelet transform and GA feature extraction of the hyperspectral data acquired by the UAV. The improved inversion can be expected to achieve accurate SMC prediction using crop growth period spectra at the field scale. The finding can provide a strong reference for high-precision SMC monitoring using remote sensing. [ABSTRACT FROM AUTHOR]

Copyright of Sichuan Mental Health is the property of Sichuan Mental Health Center and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Shandong Medical Journal is the property of Shandong Medical Health Newspapers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Practical Pharmacy & Clinical Remedies is the property of Editorial Department of Practical Pharmacy & Clinical Remedies and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In order to solve the problem of discontinuous detection of asphalt pavement crack, a crack detection method based on curvature filters and N-P criterion is proposed. Combined with the minimal rectangular and trigonometric tangent planes, an improved curvature filter based on the regular energy function is modified to eliminate the random noise and smooth the texture. The suspected crack targets are extracted by adopting a coarse-to-fine segmentation methodology and the geometric characteristics are applied to remove noises like blocks or spots to locate the crack and obtain the crack segments. On this basis, merged with the information of position and direction of the crack segments, the N-P criterionbased method is adopted to connect the endpoints of the crack segments and obtain the complete crack data. The results show that the proposed algorithm can effectively detect the cracks with high detection precision, such as transverse cracks, longitudinal cracks, block cracks and turtle cracks. The integrity of crack detection is more than 90.5%. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

故意过量服药行为已成为青少年常见的自伤自杀方式之一，女性总的故意过量服药行为人数较男性更 多，但男性因故意过量服药行为而死亡的比例较女性更高。故意过量服药行为涉及药物种类较多，常见的药物种类 包括解热镇痛药、抗抑郁药、抗精神病药、镇静安眠药等，但不同地区使用率有所不同。故意过量服药行为是多种因 素共同作用的结果，其危险因素包括女性、家庭暴力、既往服用药物过量史、多重物质使用、抑郁症、冲动等。故意过 量服药行为不仅带来身心健康的损害，同时也增加经济负担。需要对故意过量服药行为的高危人群进行干预，如心 理咨询或心理治疗，并加强药物的监管，以此来减少过量服药行为的风险。 [ABSTRACT FROM AUTHOR]

Copyright of Journal of Clinical Nursing in Practice is the property of Journal of Clinical Nursing in Practice (Editorial Board, Shanghai Jiao Tong University Press) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Synthetic Crystals is the property of Journal of Synthetic Crystals Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Shenyang Agricultural University is the property of Journal of Shenyang Agricultural University Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Computer-Aided Design & Computer Graphics / Jisuanji Fuzhu Sheji Yu Tuxingxue Xuebao is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Engineering Management & Technology Discussion is the property of Omniscient Pte. Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Henan University of Technology Natural Science Edition is the property of Henan University of Technology Journal Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Applied Ecology / Yingyong Shengtai Xuebao is the property of Chinese Journal of Applied Ecology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective To evaluate the safety and efficacy based on cytochrome P450(CYP)3A5*1 gene polymorphisms in guiding the individualized medication of tacrolimus (FK506) after liver transplantation. Methods Clinical data of 100 consecutively enrolled recipients who underwent liver transplantation for the first time were analyzed and randomly divided into experimental group and control group, with 50 cases in each group. The donors and recipients in the experimental group received preoperative CYP3A5 gene detection, and determined the FK506 medication regimen according to the CYP3A5*1 genotype. The compliance rate of FK506 target blood concentration, the recovery rate of liver function in the two groups of recipients at 7, 14, 28 d and 3, 6, 9, 12 months postoperatively, as well as the number of FK506 dosage adjustment during the follow-up were observed. The 1-year graft survival rate and the incidence of complications were recorded in both groups of recipients, such as acute rejection, infection, acute kidney injury, gastrointestinal symptoms, de novo hypertension, de novo diabetes, colds and rash, etc. Results The differences of the compliance rate of FK506 target blood concentration between the two groups of recipients at 7, 14 d after operation were statistically significant (both P<0.05). There was no statistically significant difference between the two groups in the compliance rate of FK506 target blood concentration at 28 d and 3, 6, 9, 12 months and the recovery rate of liver function at the 7 observation time points after operation (all P>0.05). The difference between the two groups of recipients in number of FK506 dose adjustment during follow-up was statistically significant (P=0.021). There were no statistically significant differences in 1-year graft survival rate and incidence of complications between the two groups of recipients after operation and during follow-up (all P>0.05). Conclusions It is safe to guide individualized medication of FK506 after liver transplantation according to CYP3A5*1 gene polymorphism. It can increase the compliance rate of FK506 target blood concentration of recipients in the early postoperative stage, and can effectively reduce the number of dose adjustment during follow-up. [ABSTRACT FROM AUTHOR]

With the growth of population and the rapid development of social economy, the shortage of water resources and the pollution of water environment in Yanghe River Basin have become increasingly prominent, which leads to the water quality in the assessment section of Yanghe River Basin is difficult to meet the water quality standard. In order to achieve the efficient utilization of water resources and environmental protection, combining with the characteristics of economic development and water resources utilization, an optimal allocation model of agricultural water resources was established with the water quality constraints for Yanghe River Basin. Therefore, under the premise of the water quality of assessment section, the monthly water allocation of different crops and livestock, as well as the crop planting area and the livestock number were optimized to maximize agricultural economic benefit. The paper proposed a method to control water quality by supplying water and reducing pullution simultaneously. Moreover, based on the water water requirement of agriculture and animal husbandry, this paper introduced a method to avoid unbalanced water supply problems and reduce the dimension to improve the solution efficiency. The optimization results showed that the assessment section of the Bridge 8 could be adjusted to meet the water quality standard by increasing the planting area of the vegetables and the tubers with higher benefit, as well as the large livestock number, and decreasing the planting area of oilseeds with severer emission, as well as the small livestock number. Comparing with the actual values in 2014, the agricultural water allocation decreased by 3.38%, and the economic benefit increased by 11.96%. Therefore, the model was verified effectively. Furthermore, the paper analyzed the optimization allocation schemes under different conditions of the low, median and high flow years in 2020. The results showed that, the more water quantity available, the more agricultural water allocation and river recharge correspondingly. In this condition, water allocation of most water users and subzones were also increased, of which Huailai and Xuanhua had larger increments. Besides, the water allocation of crops was larger than that of livestock, and the grains and fruits had larger increments. The increase rate of water users was relative to planting area, while the increase rate of subzones was relative to the crop type and planting area, and water allocation was the comprehensive tradeoff among available water for agriculture, pollution emissions and economic benefits. The proposed model is of great significance for ensuring water quality safety and sustainable development of regional economy in Yanghe River Basin, and has a certain reference value for optimizing allocation of water resources considering water quantity and quality. [ABSTRACT FROM AUTHOR]

Objective To explore the safety application of organs from infectious donors. Methods Clinical data of 67 donors and recipients undergoing orthotopic liver transplantation were retrospectively analyzed. According to the occurrence of infections and infection sites in donors, all recipients were divided into the bloodstream infection group (n=16, donors with non-drag resistant bacterial infections), non-bloodstream infection group («=20, donors with other site infections) and non-infection group («=31). Perioperative clinical parameters including preoperative model for end-stage liver disease (MELD) score, operative time, anhepatic phase, intraoperative blood loss and intraoperative blood transfusion were statistically compared among three groups. The recovery of liver function and coagulation function in the recipients was observed at postoperative 1, 3, 7,14 and 21 d. The incidence rate of complications and mortality rate in the recipients were recorded within 1 month after liver transplantation. The recovery of postoperative infection-related parameters including white blood cell (WBC), neutrophil pet (NE%) and procalcitonin (PCT) level in the recipients was observed. The application rate and application time of restricted antibiotics were recorded. Results Perioperative clinical parameters in the recipients did not significantly differ among three groups (all P>0.05). At each time point after liver transplantation, the liver function, coagulation function, incidence rate of complications and mortality rate in the recipients did not significantly differ among three groups (all P>0.05). The NE% of recipients at postoperative 3 and 7 d in the bloodstream infection group was significantly higher than those in non-bloodstream infection and non-infection groups (all P<0.05). The PCT levels of recipients at postoperative 3, 7 and 14 d in the bloodstream infection group were significantly higher than those in the non-bloodstream infection and non-infection groups (all P<0.05). The application rate and application time of restricted antibiotics in the recipients with bloodstream infections were significantly higher or longer than their counterparts in the non-bloodstxeam infection and non-infection groups (all P<0.05). Conclusions It is safe to apply liver grafts from donors with bloodstream infection of non-drug resistant bacteria or other site infections when antibiotics are applied as early as possible. [ABSTRACT FROM AUTHOR]

Copyright of Shipin Kexue/ Food Science is the property of Food Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Applied Ecology / Yingyong Shengtai Xuebao is the property of Chinese Journal of Applied Ecology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Applied Ecology / Yingyong Shengtai Xuebao is the property of Chinese Journal of Applied Ecology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

According to the teaching needs, a teaching aided system based on ARM LPC2148 MCU was designed. The teaching aided system consists of a mini system, serial communication and program download interface, matrix keyboard and individual keys that can be used as interrupt inputs, characters and dot matrix LCD and other input/output interface. The software includes a standard project template of Keil, the complete Proteus circuit schematic diagram, the SDK of relational hardware modules. In the course of embedded systems, the teaching content and experimental cases were prepared carefully based on the teaching aided system by using the " guide-imitation-practice" teaching method, which means teaching content is explored by examples and questions, step by step,one after another. With the combination of routine decomposition,project driven and other modular teaching methods, the practical application of the project is hoped to help students master basic skills of the application and development of the embedded system, and cultivate students' ability of self-innovation. The teaching aided system has been proved to play a good supporting effect for students in the beginning. [ABSTRACT FROM AUTHOR]

Copyright of Chinese Journal of Applied Ecology / Yingyong Shengtai Xuebao is the property of Chinese Journal of Applied Ecology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)