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Copyright of Journal of Anhui Agricultural Sciences is the property of Journal of Anhui Agricultural Sciences 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 Anhui Agricultural Sciences is the property of Journal of Anhui Agricultural Sciences 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.)

Litchi is the most important high-quality fruit tree species in South China, and is also a representative fruit tree with aril as the edible part in the Sapindaceae family. However, frequent fruit cracking affects the yield and fruit quality of litchi during the growth and development, in particular for the high-value litchi varieties, such as ‘Nuomici’ and ‘Guiwei’. Therefore, it is important to understand the factors affecting fruit cracking, and to breed crack-resistant varieties to prevent and mitigate fruit cracking, thus promote the sustainable development of litchi. In this review, we introduce the phenomenon of litchi fruit cracking and the diversity of fruit cracking types, and emphasize the distinct feature of litchi fruit cracking along the suture line. We also summarize the causes of litchi fruit cracking at different developmental stages and among different varieties from the perspectives of growth environmental conditions, litchi variety characteristics (genetics, fruit size, seed type, pericarp characteristics), and etc., and the research progress in its physiology and molecular biology including pulp TSS, calcium content, cell wall components and their associated enzymes. The review points out that although there are great differences in the susceptibility of fruit cracking among different litchi varieties, so far, we have not been able to identify the key enzymes or major genes related to fruit cracking; compared with other fruits, litchi fruit cracking has a certain degree of specificity, which is manifested in that litchi fruit cracking peaks at the stage from the green fruit stage to the color turning stage, and that the fruits always crack along the suture line with the pulp remaining intact. In the future, researches should be strengthened on the relationship between the structure of the suture line and fruit cracking in litchi fruit, and the possible influence of seed type on the susceptibility to fruit cracking. [ABSTRACT FROM AUTHOR]

Copyright of Progress in Modern Biomedicine is the property of Publishing House of Progress in Modern Biomedicine 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 Hydrobiology / Shuisheng Shengwu Xuebao is the property of Editorial Department of Journal of Hydrobiology 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 Advances in New & Renewable Energy is the property of Editorial Office of Advances in New & Renewable Energy 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 Guangdong Architecture Civil Engineering is the property of Guangdong Architecture Civil Engineering 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 Frontiers of Clinical Medicine 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 Chinese Journal of Osteoporosis is the property of Chinese Journal of Osteoporosis 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 Natural Gas Geoscience is the property of Natural Gas Geoscience 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 2-year screening myopia rate in Lijiang City and Dali City during the COVID-19 pandemic and analyze the related influencing factors of myopia. Methods A total of 774 students were randomly selected as the research subjects. In October 2020 and September 2021, the eyes of the same study population were tested by desktop automatic computer refractometer, and the objective indicators of their eyes were obtained. Logistic regression was used to analyze the influencing factors of myopia. Results The overall screening myopia rates of 2-year primary and secondary school students in Lijiang City and Dali City were 55.0%, 62.8% and 45.7%, 51.4%, respectively. The results showed that in both cities the myopia rate of female students was higher than that of male students, and the myopia rate of junior middle school students was higher than that of primary school students （P < 0.05）. Compared with 2020, the daily multimedia teaching time of students in Lijiang City was getting longer, the daily homework time was decreasing, the number of students playing mobile phones before bed was increasing, and the outdoor activity time was increasing in 2021 （P < 0.05）；the daily multimedia teaching time of students in Dali City was getting longer, the daily homework time was decreasing, the outdoor activity time was increasing，and the ball game time was increasing in 2021（P < 0.05）. Logistic regression analysis showed that in Lijiang City in 2020, girls, junior high school students, recess in the teaching building, always eating animal liver, always eating sweets, always drinking sugary drinks were risk factors for myopia （P < 0.05）. In 2021, girls, junior high school students, outdoor activities >2 h, always eating sweets were risk factors for myopia （P < 0.05）. In Dali City in 2020, junior high school students, the earliest reading age was 5 ～6 years old, and neither parents were myopic were risk factors for myopia （P < 0.05）. In 2021,junior high school students, always eating sweets were risk factors for myopia （P < 0.05）. Conclusion During the epidemic period, the eye time of students in the two places was increasing, and the myopia rate was increasing, with gender and school stage differences. We should focus on the vision of junior high school students, especially girls. The influencing factors of myopia in students are complex. Outdoor activities > 2 h, recess in the teaching building, always eating animal liver, always eating sweets, always drinking sugary drinks, reading age of 5～6 years old, and neither parents were myopic were risk factors for myopia in students. According to the risk factors that are easy to change, we should strengthen the publicity of myopia prevention and treatment knowledge, and take intervention measures to prevent the occurrence and development of myopia. [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 Bioprocess Engineering is the property of Chinese Journal of Bioprocess Engineering 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 Clinical Hepatology / Linchuang Gandanbing Zazhi is the property of Journal of Clinical Hepatology 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 Electric Power Automation Equipment / Dianli Zidonghua Shebei is the property of Electric Power Automation Equipment 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 Shenyang Pharmaceutical University is the property of Shenyang Pharmaceutical University 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 Pharmaceutical University is the property of Shenyang Pharmaceutical University 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 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 Journal of Northwest A & F University - Natural Science Edition is the property of Editorial Department of Journal of Northwest A&F University (Natural Science Edition) 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 Anhui Agricultural Sciences is the property of Journal of Anhui Agricultural Sciences 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.)

[Objective] AbrB is an important transition state regulator in Bacillus subtilis, which keeps functioning from exponential to stationary phase.Nevertheless, the function is not well understood in B.pumilus and requires further study to understand the certain regulation function. [Method] In order to look into the biological function of AbrB in B.pumilus, the present study performed a markerless deletion of abrB gene on B.pumilus SCU12 by adopting a temperature-sensitive plasmid vector with a counterselectable marker to obtain SCU12（ΔabrB）.To study the phenotypic changes of the knockout bacteria, the bacterial growth curve and extracellular protease activity were measured, the colony morphology and biofilm formation were observed, and the motility was detected by swarming plates. [Result] An abrB knockout strain SCU12（ΔabrB） was obtained.The results of the growth curve indicated that compared with the parental strain, the highest OD600 nm value of the abrB knockout strain was reduced by 24%, indicating that the growth was inhibited; The observation of colony morphology demonstrated that the color and shape of the colony changed; According to the motility experiment, motility of the knockout strain was reduced; Within 18 hours, the biofilm formation time of the knockout strain was advanced; Furthermore, the activity of extracellular protease was significantly increased, which was 1.59 times that of the parental strain. [Conclusion] The abrB gene has a broad regulatory effect in B.pumilus. [ABSTRACT FROM AUTHOR]

Copyright of Bulletin of Botanical Research is the property of Bulletin of Botanical Research 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 New Architecture is the property of New Architecture 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 Detergent & Cosmetics is the property of Detergent & Cosmetics 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 Science Technology & Industry / Keji he Chanye is the property of Chinese Society of Technology Economics 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 Northwest A & F University - Natural Science Edition is the property of Editorial Department of Journal of Northwest A&F University (Natural Science Edition) 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 Agricultural Sciences is the property of Editorial Board of Journal of Henan Agricultural Sciences 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 Railway Standard Design is the property of Railway Standard Design 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.)

In this paper, solid-liquid composite 1 ubricated microcapsules (GPILM) were prepared by solvent volatilization method with graphene oxide (GO) and polyphenylsulfone (PPSU) as wall materials and 1-( 1-aminoethyl)-3-me thylimidazolium bromide ionic liquid (IL) as core materials. And GPILM was introduced into polyimide resin (PI) to prepare GPILM/ PI composite coating. The focus is on the influence of the amount of GPILM introduced on the tribological properties of PI composite coatings. The results showed that GPILM microcapsules were successfully prepared and the particle size was about ( 45±15)µm. The introduction of GPILM can effectively reduce the friction coefficient and volumetric wear rate of PI coating. When the GPILM addition amount is only 5wt%, the friction coefficient (0.21) and volume wear rate (1.2X10-6mm³/(N.m)) of the composite coating are reduced by 27.6% and 78.1% compared with the PI coating. This is mainly because the unique microcapsule structure of GPILM can not only effectively exert the solid-liquid synergistic lubrication effect of GO and IL, but also its good dispersion in PI matrix can effectively improve the wear resistance of its composite coating. The composite microcapsules with this kind of structure are expected to play an important role in the field of oil-free lubrication. [ABSTRACT FROM AUTHOR]

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.)

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.)

肥胖会危害人类健康,已成为全球最为关注的公共卫生问题。我国肥胖人口数量居全球第一, 其中大学生肥胖率呈上升趋势。大学生因为缺乏相应的知识,在实施减肥中存在着许多误区并会对身体造成 伤害。作者系统阐述了大学生肥胖的原因、在减肥中的误区及作者在中医院校开设科学减肥课程的建设情况。 作者通过该课程,培养了大学生群体正确的减肥理念,指导其进行科学减肥,以期提供借鉴. [ABSTRACT FROM AUTHOR]