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Copyright of China Tropical Medicine is the property of China Tropical Medicine 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 Experimental Technology & Management is the property of Experimental Technology & Management 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.)

Mechanical precision seed metering device is widely used in precision seeding technology because of its simple structure and uniform seed metering. Seed filling process is the key link of the whole operation process of seed metering device. The precision metering device is mainly divided into internal filling, side filling, external filling, and the combination of side filling and external filling according to the seed filling mode. In the operation process, the internal filling mode mainly completes the seeding operation through the process of type-hole filling and gravity clearing, and the seed motion parameters close to the type-hole directly affect the seeding quality of the machine. The rotary type-hole cotton precision seed metering device is a kind of mechanical precision seed metering device. In order to solve the problem of missing seed in the process of filling, the influence of the motion parameters of rotary type-hole cotton precision seed metering device on the filling performance by establishing the kinematic model of the seed filling process in this paper. Using the discrete element simulation software to analyze the speed change trend of cotton seed falling into the type-hole and the influence of seed wheel vibration frequency on seed group disturbance. Taking the vibration frequency of seed wheel, vibration offset angle of seed wheel and rotating speed of metering device as the test factors, and taking the qualified rate of seed spacing, replaying rate and missing rate as the test indexes, three factors and five levels of positive traffic rotation combined test are carried out to explore the influence of each factor on seed metering performance. Design expert 8.0.6 software is used to analyze the test results and optimize the regression model. Single factor simulation test results show that the instantaneous speed of cotton seed increases with the increase of the rotating speed of the seed wheel, the instantaneous speed of the cotton seed is less than that of the seed wheel when it is filled into the type-hole, the cotton seeds with lower relative speed have better filling effect. When the vibration frequency of the seed wheel is 7 Hz, the average value of the normal force of the seed group is the smallest, which is 0.75 N, at this time, the internal friction of the seed goup is the smallest, the cotton seed is easy to be taken by the type-hole, and the seed filling performance of the seed metering device is improved. The simulation results of quadratic regression general rotation combination show that when the rotating speed of the seed metering device is 12.59 r/min, the vibration offset angle of seed wheel is 8.06° and the vibration frequency of seed wheel is 6.08 Hz, the qualified rate of seed spacing reaches the maximum of 94.5%, and the leak seeding rate is 2.9%, the repaly rate is 3.3%. On this basis, the platform validation test was carried out with Xinluzao No.61 cotton seed as the test object. The test results showed that when the rotating speed of the seed metering device was 12 r/min, the maximum qualified rate of the seed spacing was 94.65%, the error between the rotating speed of the seed metering device and the simulation test is 5.4%, which verifies the accuracy of the simulation results. This study can provide a reference for the structural optimization of the key components of the rotary type-hole cotton precision metering device. [ABSTRACT FROM AUTHOR]

Copyright of Coal Science & Technology (0253-2336) is the property of Coal Science & Technology 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.)

探讨二甲双胍对糖耐量异常的绝经后女性骨代谢标志物及骨密度的影响，分析不同剂 量二甲双胍干预治疗后糖代谢及骨代谢的关系。选取2016年12月至2018年2月门诊125例糖耐量 异常的绝经后女性患者，随机分为生活方式干预组（A组）、二甲双胍低剂量组（B组）、中等剂量组 （C 组）、高剂量组（D组），干预24周后比较体重、血生化指标、甲状旁腺素（PTH）、25羟维生素D ［25（OH）D］、总Ⅰ型胶原氨基端延长肽（PⅠNP）、β‑胶原降解产物（β‑CTX）、腰椎及髋部骨密度等。 结果显示，治疗后4组受试者体质指数、血脂、肝肾功能、钙、磷、PTH、25（OH）D、β‑CTX、腰椎骨密度等差 异均无统计学意义；治疗后A组受试者的糖化血红蛋白高于B、C及D组，后三组差异无统计学意义；治 疗后A组受试者碱性磷酸酶、PⅠNP及髋部骨密度均低于其余三组，而C组受试者碱性磷酸酶及PⅠNP 均高于B及D组；但B、C及D组受试者的髋部骨密度差异无统计学意义。说明对于糖耐量异常的绝经 后女性患者，给予二甲双胍1 500 mg/d治疗不仅可有效控制血糖，同时可促进骨形成、改善骨密度. [ABSTRACT FROM AUTHOR]

Aiming at the rough problem of Identical-Discrepancy-Contrary (IDC) comments in Set Pair Analysis (SPA), this study proposed an improved SPA to deeper characterize the difference and opposites coefficient, and to extend the evaluation ranking of dam-break environmental impact assessment from 3 levels to 5 levels and then established dam-break environmental impact assessment model based on the General Set Pair Analysis (GSPA). The model was applied to Shaheji Reservoir dam. Compared with traditional SPA method, fuzzy mathematical model showed that the evaluation results of GSPA are reliable, reasonable and visualized and then can obtain the convergence degree of each evaluation level. It is a scientific and practical evaluation method for evaluation and decision-making of the dam-break environmental impact assessment and has good potential application. [ABSTRACT FROM AUTHOR]

Objective To obtain the pass rate of driving test of monocular visually impaired patients in Yunnan province and analyze the cause of monocular visually impaired patients．Methods We performed Visual acuity， computer Optometry， horizontal visual field， color vision and slit-lamp microscope on each of the physical participants. In this survey， 294 people who had undergone medical examinations from January 2018 to April 2018 were divided into three groups for retrospective analysis by age. The uncorrected distance visual acuity of the superior eye or corrected distance visual acuity reaches the logarithmic vision table 5.0 and above， the horizontal field of vision reaches 150 °， and there is no red-green blind person who passes the medical examination. The statistical method uses SPSS19 .0 statistical software， mainly descriptive statistics．Results 250 males and 44 females were included in the analysis. The ratio of males to females was 5:1. Age 18-60 years old， average age 32 ± 8 years old. The overall pass rate for medical examinations was 69.4 %，68.8%for men and 72.7%for women. The lowest pass rate for men and women is over 40 years old （χ2 =12.676，P＜0.001 and χ2 =11.092，P=0.001） ; The pass rate of men gradually decreases with age. Among the causes of monocular vision disorders， 148 male eye injuries， 68 amblyopia， and 34 others; Female eye trauma 7， amblyopia 29， other 8. Most of the injuries occurred in young age， including 96 sharp injuries， 48 bullet injuries， and 11 explosive injuries．Conclusion At present， the pass rate of the one-eye vision impairment driver's license in our province is 69.4 %. Among the causes of monocular vision disorders， the most important male eye trauma in early childhood， followed by the failure to detect and treat amblyopia in time; The most important female amblyopia is not found and treated in time. [ABSTRACT FROM AUTHOR]

Copyright of Food Research & Development is the property of Food Research & Development 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 Beijing University of Technology is the property of Journal of Beijing University of Technology, 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.)

BACKGROUND: Gastrodin has been shown to inhibit the in vivo astrocyte activation after injury, improve the microenvironment of spinal cord injury (SCI), and reduce secondary injuries. OBJECTIVE: To observe the effects of gastrodine on the neural functional recovery and glial fibrillary acidic protein in a rat model of clamping-induced SCI. METHODS: Forty-eight adult Sprague-Dawley rats were randomly divided into three groups, and the models of clamping-induced SCI were established. The rats in sham group were only subjected to laminectomy; gastrodine group was given 100 mg/kg•d gastrodine; the sham and SCI groups were given equal volume of normal saline. The function recovery of spinal cord was evaluated by Basso, Beattie, Bresnahan (BBB) scores, and Rivlin inclined plane experiment at postoperative 1, 3, 7, 14, 21 and 28 days. The morphological changes of spinal cord were observed after perfusion at 28 days, expression level of glial fibrillary acidic protein was detected by immunofluorescence, and changes of Nissl body were observed through Nissl staining. RESULTS AND CONCLUSION: BBB and Rivlin inclined plane scores in each group were significantly decreased postoperatively, and the scores then increased with time; the scores at each time point in the sham group were significantly higher than those in the other groups (P < 0.05); the scores in the gastrodine group were significantly higher than those in the SCI group from day 3 (P < 0.05). At postoperative 28 days, the expression level of glial fibrillary acidic protein was the lowest in the sham group, followed by gastrodine group, and the highest in the SCI group (P < 0.05). In the gastrodine and SCI groups, Nissl bodies were slightly stained partially dissolved, and the account of Nissl bodies in this two groups was less than that in the sham group (P < 0.05), but the gastrodine group had significantly more Nissl bodies than the SCI group (P < 0.05). The spinal cord in the sham group revealed the complete structure; in the SCI group, the structure of spinal cord was in disorder, syringomyelia formatted, and the gray-white matter boundary was obscure; gastrodine group showed smaller syringomyelia and gray-white matter boundary were clear. These results show that gastrodin can inhibit the proliferation of astrocytes after SCI, play neuroprotection, and improve motor function. [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 Acta Automatica Sinica is the property of Chinese Academy of Sciences, Institute of Automation 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 provide scientific reference for the investigation of heavy metal toxicity on Chinese herbal medicine, the effects of Cd pollution on the variation of plant physiological and biochemical characteristics of Duchesnea indica (Andr. ) Focke were studied. [Method】 The simulated experiments of Cd contamination were carried out in pots which was used for planting Duchesnea indica (Andr. ) Focke. After a certain period of growth, the stable seedlings were irrigated by Cd2 + solution of different concentration (11, 22, 45,90 and 134 mg/ kg) with 50 mL/d, and their growth status of5,30,45 days were recorded. Meanwhile, the contents of total soluble sugar, total flavonoids, and antioxidant enzyme activity of the plant were determined. [ Result] It showed that with increasing Cd pollution in the soil, Cd content in Duchesnea indica (Andr.) Focke was kept rising. In the meantime, the total soluble sugar, total flavonoids and the activity of antioxidant enzymes in leaf, stem and root showed a trend of decrease.【Conclusion】] Cd could be easily accumulated in Duchesnea indica ( Andr.) Focke and damaged the metabolism and normal growth of plant, leading to the decrease of physiological and biochemical characteristic indexes ,showing a harmful effect on the plant. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Kunming Medical University / Kunming Yike Daxue Xuebao is the property of Kunming Medical Journal 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.)

The present paper is to clone a trypsin inhibitor gene from Cassia oblusifolia (0OTI2) and study its expression under various stresses. Tlie partial cDNA, including the complete 3-terminal cDNA of the COTI2 gene was isolated by RACE technique. The expression under various stresses was studied with real time-PCR. The result showed that COTI2 gene contained 565 bp and contained typical domain of Kunitz inhibitors. The PI residue of C0TI2 was composed of Ser38. Multiple alignment analysis based on amino acids of Kunitz inhibitor genes from various plants indicated that C0T12 had the highest similarity with Popidus Irichocarpa. There were the expression patterns of GOTO under various stresses. The research would provide a !>asis for further study on genetic function and regulatory mechanism of C0TI2. [ABSTRACT FROM AUTHOR]

Objective To construct human indoleamine 2, 3-dioxygenase-2 (hIDO2) prokaryotic expression vectors to express and obtain purified hIDO2. Methods Using genetic engineering method to obtain hIDO2 prokaryotic expression vectors and transform Escherichia coli expression strains among which an optimal recombinant plasmid and isopropy-β-D-thiogalactoside (IPTG) concentration were screened and used for massive hIDO2 expressing. Affinity chromatography was used for hIDO2 purification. BCA method was used for protein concentration and yield measurement, SDS-PAGE electrophoresis was used for hIDO2 expression quantity determination and the purity was calculated with relevant software. Western blot was used for specificity detection. Results Electrophoretic analysis, double restriction endonuclease digestion and sequencing confirmed the successful construction of hIDO2 expression vectors. pET28a-hIDO2 was found to be a better recombinant plasmid to express human IDO2 than pGEX-4T-1-hIDO2. A specific target stripe at molecular weight (Mr) of about 45 000, same as predicted, was observed in both SDS-PAGE electrophoresis and Western blot. The purity, concentration and yield of hIDO2 was 97.1%, 20 mg/mL and 15 mg/L, respectively. Conclusions We successfully constructed recombinant plasmids using which we expressed and purified hIDO2 with high concentration, purity and yield. [ABSTRACT FROM AUTHOR]

Copyright of Transactions of the Chinese Society of Agricultural Engineering is the property of Chinese Society of Agricultural Engineering 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.)

Mature leaves of diploid, tetraploid and hexaploid of Camellia reticulate( Theaceae) were produced by paraffin method. The anatomical characters of drought related including thickness of the cutin, thickness of the upper epidermis, thickness of the lower epidermis, leaves thickness, thickness of palisade tissue, thickness of spongy tissue, ratio between palisade tissue to spongy tissue, tightness of leaves palisade tissue structure and looseness of leaves sponge tissue structure were investigated. They were measured by optical microscopy and analyzed statistically. The results showed that all of the indices were significantly or highly significantly different. At last 5 anatomical structure indices with most representativeness were selected. Comprehensive analysis using subordinative function method indicated that the potential of drought resistance in tetraploid was the largest, followed by diploid and hexaploid. The result would be used to the further study of Camellia reticulate in directed breeding. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Harbin Institute of Technology. Social Sciences Edition / Haerbin Gongye Daxue Xuebao. Shehui Kexue Ban is the property of Harbin Institute of Technology 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 Kunming Medical University / Kunming Yike Daxue Xuebao is the property of Kunming Medical Journal 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 Kunming Medical University / Kunming Yike Daxue Xuebao is the property of Kunming Medical Journal 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 Kunming Medical University / Kunming Yike Daxue Xuebao is the property of Kunming Medical Journal 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 analyze the fundus characteristics and fluorescein angiography of morning glory syndrome．Methods The morning glory syndrome patients' fundus photography and fundus fluorescein angiography were analyzed in our hospital．Results Fundus examination showed: a large disc with a funnel-shaped excavation surrounded by an annulus of choriorretinal atrophy. A white tuft of glial tissue overlies the central portion of disc. The blood vessels emerged from the rim of excavation in a radial pattern，and they increased in number and it was difficult to distinguish arteries fromveins. Angiographic characteristics: in the central of disc the white tissue was blockage of fluorescence or hypofluorescence which was surrounded by is hyperfluorescence， and at the outside is transmitted fluorescence. It's rarely to see fluorescein leakage．Conclusion The fundus examination， fundus fluorescein angiography and combination of patients' history are helpful to confirm the diagnosis of morning glory syndrom. [ABSTRACT FROM AUTHOR]

研究了丙硫氧嘧啶对L—半胱氨酸包覆的ZnS纳米粒子荧光强度的影响,发现在pH=6.5的KH2PO4-NaOH缓冲溶液中,丙硫氧嘧啶对功能化ZnS纳米粒子有荧光猝灭作用,据此建立了以功能化的ZnS纳米粒子为荧光探针测定药物制剂中丙硫氧嘧啶含量的荧光分析法.丙硫氧嘧啶浓度在4.00×10-6~4.00×10-4 mol • L-1范围内与体系的荧光强度线性关系良好,相关系数r=0.998 7,检出限(S/N=3)为1.70×10-6 mol • L-1,对浓度为4.00× 10-5 mol • L-1丙硫氧嘧啶标准溶液平行测定11次的相对标准偏差为1.49%.该法用于丙硫氧嘧啶片中丙硫氧嘧啶含量测定,结果令人满意.