المؤلفون: Mingmin Yang, Xiaohua Pan, Zijie Chen, Xiaoli Shen, Zhen Yu, Yufei Tao, Shan Li, Xiang Mo, Xuyang Liu, Ning Fan

المصدر: Ophthalmology and Therapy, Vol 13, Iss 1, Pp 337-351 (2023)

مصطلحات موضوعية: Nd:YAG laser, Malignant glaucoma, Aqueous misdirection, Iridectomy, Capsulo/zonulo-hyaloido-vitreolysis, Ophthalmology, RE1-994

الوصف: Abstract Introduction The use of the neodymium:yttrium–aluminum-garnet (Nd:YAG) laser to treat malignant glaucoma (MG) has been described in the literature since the 1980s. However, the technique has been reported to have a short-term effect, with a notable relapse rate. In the present study, we report the efficacy and durability of a modified Nd:YAG laser treatment methodology for treatment of pseudophakic or aphakic MG. Methods Patients with chronic angle-closure glaucoma and deemed at high risk of developing post-operative MG received prophylactic peripheral iridectomy during their conventional operation beginning in 2017. When the diagnosis of pseudophakic or aphakic MG was confirmed, a thorough Nd:YAG laser capsulo/zonulo-hyaloido-vitreolysis (CZHV) was performed through iridectomy, along with standardized pre- and post-laser medications. This retrospective case series includes 14 eyes of 11 patients with MG who had surgical preset iridectomy and modified Nd:YAG laser CZHV between 2017 and 2022. Outcome measures included resolution and recurrence of MG and incidence of treatment complications. Results The mean follow-up was 27.1 ± 15.0 months (range, 12–48). Long-term resolution of MG was obtained in all included eyes at the end of the follow-up. Six eyes (42.9%) achieved long-term resolution with a single Nd:YAG laser intervention. Eight eyes (57.1%) achieved long-term resolution following two to three laser interventions, with two eyes (14.3%) experiencing recurrence. There was no complication during the follow-up. At the final visit, a significant reduction (P = 0.0001) in the mean intraocular pressure (IOP) was observed (13.1 ± 2.8 mmHg) compared to presentation (21.4 ± 6.3 mmHg). Conclusion The modified Nd:YAG laser treatment methodology is a minimally invasive option to manage pseudophakic or aphakic MG with sustained effectiveness. Reduced inflammatory reactions due to prophylactic peripheral iridectomy, rapid diagnosis, and timely treatment initiation have all contributed to the favorable outcomes associated with this modified treatment methodology.

وصف الملف: electronic resource

العلاقة: https://doaj.org/toc/2193-8245Test; https://doaj.org/toc/2193-6528Test

الوصول الحر: https://doaj.org/article/9c1f01c519ff4580bab8a4d94e71f351Test

المؤلفون: Mingfang Chen, Xiang Mo, Yongxia Zhang, Seng Wang

المصدر: Advances in Mechanical Engineering, Vol 15 (2023)

مصطلحات موضوعية: Mechanical engineering and machinery, TJ1-1570

الوصف: To enhance the environmental adaptability of the quadruped robot and realize its stability in terrain with obstacles, this paper studies the fusion of sensor information feedback and bio-reflection control algorithm. First, a central pattern generator (CPG) that generates basal rhythmic movements is constructed. Secondly, a simplified foot end that can be used to identify the touchdown and obstacle information is designed. To enhance the stability of the quadruped robot during the flexor reflex process and avoid the problem of solidification in the reflex process, the foot touch signal was introduced into the flexor reflex algorithm, which enhanced the flexibility of the reflex process. To avoid secondary collisions with obstacles, the postswing reflection process is optimized, and active obstacle avoidance is realized after the obstacle is touched. Finally, the organic fusion of sensor information feedback, CPG control network, and bio-reflection control algorithm is realized. The simulation results show that the robot’s ability to overcome obstacles is improved, the number of reflections is less, and the reflection process is more stable.

وصف الملف: electronic resource

العلاقة: https://doaj.org/toc/1687-8140Test

الوصول الحر: https://doaj.org/article/7d3c65e774184287b5c02af19d8c5290Test

المؤلفون: Mengliang Xu, Xiangzhen Li, Xiang Mo, Siyu Tu, Yanchun Cui, Daichang Yang

المصدر: Biological Research, Vol 53, Iss 1, Pp 1-7 (2020)

مصطلحات موضوعية: Oryza rufipogon Griff., Oryza sativa L., Ratoon rice, Cold stress, Overwinter, Survival rate, Biology (General), QH301-705.5

الوصف: Abstract Background Rice is the staple food of many people around the world. However, most rice varieties, especially widely grown indica varieties and hybrids, are sensitive to cold stress. In order to provide a basis for the utilization of a common wild rice (CWR, Oryza rufipogon Griff.) named ‘Chaling’ CWR in cold-tolerant rice breeding and deepen the understanding of rice cold tolerance, the cold tolerance of ratoon ‘Chaling’ CWR was studied under the stress of the natural low temperature in winter in Changsha, Hunan province, China, especially under the stress of abnormal natural low temperature in Changsha in 2008, taking other ratoon CWR accessions and ratoon cultivated rice phenotypes as control. Results The results showed that ratoon ‘Chaling’ CWR can safely overwinter under the natural conditions in Changsha (28° 22′ N), Hunan province, China, which is a further and colder northern place than its habitat, even if it suffers a long-term low temperature stress with ice and snow. In 2008, an extremely cold winter appeared in Changsha, i.e., the average daily mean temperature of 22 consecutive days from January 13 to February 3 was − 1.0 °C, and the extreme low temperature was − 4.7 °C. After subjected to this long-term cold stress, the overwinter survival rate of ratoon ‘Chaling’ CWR was 100%, equals to that of ratoon ‘Dongxiang’ CWR which is northernmost distribution in the word among wild rice populations, higher than those of ratoon ‘Fusui’ CWR, ratoon ‘Jiangyong’ CWR, and ratoon ‘Liujiang’ CWR (63.55–83.5%) as well as those of ratoon ‘Hainan’ CWR, ratoon ‘Hepu’ CWR, and all the ratoon cultivated rice phenotypes including 3 japonica ones, 3 javanica ones, and 5 indica ones (0.0%). Conclusions The results indicate that ratoon ‘Chaling’ CWR possesses strong cold tolerance and certain freezing tolerance.

وصف الملف: electronic resource

العلاقة: http://link.springer.com/article/10.1186/s40659-020-00276-5Test; https://doaj.org/toc/0717-6287Test

الوصول الحر: https://doaj.org/article/92f79fc28b6a4350aa073087bc54bfccTest

المؤلفون: Xiang MO, Mengliang XU

المصدر: Notulae Botanicae Horti Agrobotanici Cluj-Napoca, Vol 44, Iss 2, Pp 404-410 (2016)

مصطلحات موضوعية: Forestry, SD1-669.5, Agriculture (General), S1-972

الوصف: ‘Chaling’ common wild rice (CWR, Oryza rufipogon Griff.), found in Chaling county, Hunan province, China, is one of the only two wild rice populations grown northernmost in the world. Although the cold tolerance of ‘Chaling’ CWR is extremely strong, its photosynthetic characteristics under cold stress remain unknown. In this study, the photosynthetic parameters of leaves at tiller stage in ‘Chaling’ CWR were first determined under the conditions of cold stress (15 °C) and normal temperature (28 °C), and then compared with those in the standard rice cultivars including indica ‘Guangluai 4’, indica ‘Y-Liangyou 1’ (a Chinese hybrid rice with super high grain yield), and japonica ‘Nipponbare’ under the same temperature conditions. The results showed that the net photosynthetic rate, the total chlorophyll and total carotenoid contents, the maximum quantum yield of PSII, the apparent quantum yield, and the carboxylation efficiency in ‘Chaling’ CWR were all significantly higher than those in the standard rice cultivars under cold stress (P < 0.05). The ratios of these parameters in ‘Chaling’ CWR under cold stress to those under normal temperature condition were 47.9 ~ 84.9%, much higher than those in the standard rice cultivars, which were 3.1 ~ 73.8%. These results indicate that the photosynthetic characteristics of ‘Chaling’ CWR under cold stress are excellent. Our findings would have an enormous benefit if the trait of the cold stress tolerance of ‘Chaling’ CWR is transferred to the cultivated rice via the traditional breeding or molecular breeding.

وصف الملف: electronic resource

العلاقة: http://www.notulaebotanicae.ro/index.php/nbha/article/view/10274Test; https://doaj.org/toc/0255-965XTest; https://doaj.org/toc/1842-4309Test

الوصول الحر: https://doaj.org/article/5d618c9975bf44f684ef1895d17acb8aTest

المؤلفون: Wang, Qiong, Xiang, Mo, Miao, Sha

المصدر: Journal of Physics: Conference Series ; volume 2525, issue 1, page 012021 ; ISSN 1742-6588 1742-6596

الوصف: A method for pilot sequence design with the Zadoff-Chu (ZC) sequence as a base sequence is proposed to address the problem of pilot pollution in massive multi-input multi-output (MIMO) systems. Instead of the odd-length ZC sequence currently in use, the ZC sequence of even length serves as the basis of the pilot. It has the advantage of a very small cross-correlation coefficient under the premise that the sum of cyclic displacement is odd. The results of the four-cell division method are compared between the even-length and odd-length ZC pilot sequences. The MATLAB simulation shows that the signal-to-noise ratio and the channel estimation mean square error of the designed even-length ZC pilot sequence are better than those of the existing odd-length ZC pilot sequence in the case of four-cell division.

الإتاحة: https://doi.org/10.1088/1742-6596/2525/1/012021Test

المؤلفون: Kun Guo, Xiang-Mo Li, Yan-Qing Wu, Yan-Fu Qu, Xiang Ji

المصدر: Animals; Volume 12; Issue 12; Pages: 1494

مصطلحات موضوعية: clutch size, clutch mass, Colubridae, egg size, female reproduction, life history variability

جغرافية الموضوع: agris

الوصف: Long-term studies are especially suited for disentangling the effects of extrinsic and intrinsic factors on both total reproductive investment and reproductive allocation in offspring number versus offspring size. Female reproductive traits of the red-banded wolf snake (Lycodon rufozonatus) from Zhejiang, East China were studied in four years between 1999 and 2014. Egg-laying dates overall extended from late June to late July, and varied among years. Postpartum body mass, clutch size, clutch mass, and egg size were positively related to female size (snout vent length, SVL) in each year. Postpartum body mass, clutch mass, and egg size differed among years after accounting for female SVL, whereas clutch size did not. Setting female SVL at the same level, postpartum body mass was greater in 2010 than in 2014, clutch mass was greater in 2010 than in 2011 and 2014, and egg size was greater in 2010 than in the other three years. Females did not trade off egg size against number. Egg size was positively related to postpartum body condition in each year. Females laid larger eggs in 2010 than in other three years after removing the influence of maternal body condition. Our study provides evidence for the traditional view that reproductive output is highly linked to maternal body size in snakes, but not following Smith and Fretwell’s (1974) classic prediction that females with different amounts of resources to invest in reproduction should give priority to adjusting the number rather than size of their offspring. Maternal body size and condition both are important sources of variation in egg size, but factors other than these two variables may also affect the size of eggs produced by female L. rufozonatus.

وصف الملف: application/pdf

العلاقة: Herpetology; https://dx.doi.org/10.3390/ani12121494Test

الإتاحة: https://doi.org/10.3390/ani12121494Test

المؤلفون: Ying Guo, Rui‐lin Liang, You‐kai Cui, Xiang‐mo Zhao, Qiang Meng

المصدر: IET Intelligent Transport Systems, Vol 16, Iss 7, Pp 971-981 (2022)

مصطلحات موضوعية: Transportation engineering, TA1001-1280, Electronic computers. Computer science, QA75.5-76.95

الوصف: Foggy weather can cause such problems as blurred image information and the loss of image details, which may pose great challenges to road traffic target detection based on images and videos. In this study, we propose a domain‐adaptive road vehicle target detection method to implement domain adaptation for the real foggy scene. We firstly constructed a highway vehicle detection dataset with foggy images (HVFD), which contains normal weather images and foggy images and provides a complete data support for vehicle detection based on computer vision. Secondly, by improving CycleGAN we designed an improved generative confrontation network (CPGAN), which realised the style transfer between foggy images and normal weather images. Finally, we formulated a YOLOv4 target detection framework according to the domain adaptation based on the pre‐trained YOLOv4 fog vehicle detection model. The experimental results show that the method we put forward can effectively improve vehicle detection performance and reduce the work of manually labelling a large number of foggy image tags, which has a strong generalisation ability for computer vision‐based applications in low‐visibility weather.

العلاقة: https://doi.org/10.1049/itr2.12190Test; https://doaj.org/toc/1751-956XTest; https://doaj.org/toc/1751-9578Test; https://doaj.org/article/b0fecf897c36461bb6c76185e9bd4335Test

الإتاحة: https://doi.org/10.1049/itr2.12190Test
https://doaj.org/article/b0fecf897c36461bb6c76185e9bd4335Test

المؤلفون: Yu-Yue Qin (10731052), Xi-Shan Huang (10731055), Xiao-Bo Liu (5657944), Tu-Xiang Mo (10731058), Zhao-Long Xu (10731061), Ben-Chao Li (10731064), Xiao-Ya Qin (10731067), Jun Li (6494), Till F. Schӓberle (10731070), Rui-Yun Yang (842414)

مصطلحات موضوعية: Biochemistry, Microbiology, Pharmacology, Ecology, Immunology, Hematology, Virology, Biological Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, Penicillium vulpinum, andrastins, endophytic fungus, antibacterial activities

الوصف: Three new andrastin derivatives, 10-formyl andrastone A ( 1 ), 10-demethylated andrastone A ( 2 ) and andrastin G ( 3 ), together with four known andrastin analogues ( 4 - 7 ) were isolated from an endophytic fungus Penicillium vulpinum . Their structures were determined by 1 D, 2 D NMR, and the absolute configurations were further determined by experimental and calculated ECD spectra. Compound 5 exhibited significant antibacterial activity against Bacillus paratyphosus B with an MIC value of 6.25 µ g·mL −1 . Compounds 2 and 6 showed remarkable inhibitory activities against Bacillus megaterium with the MIC value of 6.25 µ g·mL −1 , respectively.

العلاقة: https://figshare.com/articles/journal_contribution/Three_new_andrastin_derivatives_from_the_endophytic_fungus_i_Penicillium_vulpinum_i_/14520028Test

الإتاحة: https://doi.org/10.6084/m9.figshare.14520028.v1Test

المؤلفون: Ding, Yu-Kun, Gong, Si-Yuan, Zhao, Xiang-Mo, Wang, Xin-Xin

المصدر: CICTP 2023

الإتاحة: https://doi.org/10.1061/9780784484869.161Test

المؤلفون: Hui-Feng Wang, Yuan-He Shan, Ting Hao, Xiang-Mo Zhao, Shang-Zhen Song, He Huang, Jia-Jia Zhang

المصدر: IEEE Transactions on Intelligent Transportation Systems. 23:17873-17886

مصطلحات موضوعية: Mechanical Engineering, Automotive Engineering, Computer Science Applications

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::25192e5bb3c20f40302c2a3bc30b2ab8Test
https://doi.org/10.1109/tits.2022.3157901Test