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State reconstruction of molecular spatial rotation

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Chinese Physics B 2012年第2期21卷 81-87页

作者： qin xiao Gao Jun-Yi Wuhan Institute of Physics and Mathematics Chinese Academy of SciencesWuhan 430071China Graduate University of the Chinese Academy of Sciences Beijing 100049China

We establish a reconstruction approach for the rotational quantum state of linear molecules possessing a magnetic manifold. Our approximate method contains an iteration with generalized matrix inverses, processing the tomographic integral of the time-dependent molecular-axis distribution in a polar angle. As shown in a simulated example for an alignment state, the density matrix is determined in a high fidelity. An analytic tomographic formula is also derived for the symmetric top rotation. The state coherent in the quantum space of both the angular momentum and its magnetic projection can be approximately retrieved from the observable time-resolved solid-angle distribution of the molecular axis.

关键词： state reconstruction molecular rotation

Catalytic Performance of MnO_x-WO_3/TiO_2 Catalyst for Selective Catalytic Reduction of NO_x with NH_3 and Its Tolerance Towards SO_2

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Chemical Research in Chinese Universities 2009年第6期25卷 914-919页

作者： WU Bi-jun LIU xiao-qin xiao Ping State Power Environmental Protection Research Institute of China Guodian Corporation Nanjing 210031 P R. China Chemical Engineering Institute Nanjing University of Technology Nanjing 210009 P. R. China

The performance of Mn-W/TiO2 for selective catalytic reduction（SCR） of NOx with NH3 and its resistance to different concentrations of SO2 at various temperatures were investigated. The results show that WO3 increased the active sites and enhanced the strength of acid, so it was an effective promoter of MnOJTiO2. The NOx conversion on Mn-W/TiO2 ranges from 80.3% to 99.6% between 100 ℃to 350℃ at GHSV=18900 h 1, while N2 product selectivity changes from 100% to 98.7%. In the presence of 0.01% SO2 and 6% H20, NOx conversion maintained 98.5% at 120℃. The influence of more than 0.01% SO2 on the activity of MnOx-WO3/TiO2 will disappear if the temperature rises above 250℃. By means of heating and sweeping with He, the activity of the catalysts can be recovered. At 300℃, NOx conversion yielded 99% with 0.07% SO2 and reached the level of commercial V-W/TiO2 catalysts. The Mn-W/TiO2 catalyst showed excellent performance for SCR of NOx with NH3 in a wider range of temperature with strong tolerance to SO2.

关键词： Selective catalytic reduction NOx MnOx-WO3/TiO2 Catalytic performance

Stochastic Resonance of a Periodically Driven Bistable System with Two Different Kinds of Time Delays

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Communications in Theoretical Physics 2009年第11期52卷 871-875页

作者： ZENG Chun-Hua ZHOU xiao-Feng ZENG qin-huang YU Huan LI Zhi-Xiong Faculty of Science Kunming University of Science and Technology Kunming 650093 China Department of Physics Qujing Normal University Qujing 655000 China Department of Physics Yunnan University Kunming 650091 China

In this paper, we study the phenomenon of stochastic resonance （SR） in a periodically driven bistable system with correlations between multiplicative and additive white noise terms when there, are two different kinds of time delays existed in the deterministic and fluctuating forces, respectively. Using the small time delay approximation and the theory of signal-to-noise ratio （SNR） in the adiabatic limit, the expression of SNR is obtained. The effects of the delay time T in the deterministic force, and the delay time 8 in the fluctuating force on SNR are discussed. Based on the numerical computation, it is found that：（i） There appears a reentrant transition between one peak and two peaks and then to one peak again in the curve of SNR when the value of the time delay θ is increased. （ii） SR can be realized by tuning the time delay T or 8 with fixed noise, i.e., delay-induced stochastic resonance （DSR） exists.

关键词： stochastic resonance time delays bistable system

Abscisic acid and jasmonic acid are involved in drought priming-induced tolerance to drought in wheat

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The Crop Journal 2021年第1期9卷 120-132页

作者： xiao Wang qing Li Jingjing Xie Mei huang Jian Cai qin Zhou Tingbo Dai Dong Jiang National Technique Innovation Center for Regional Wheat Production/Key Laboratory of Crop Ecophysiology Ministry of AgricultureNanjing Agricultural UniversityNanjing 210095JiangsuChina

Drought stress is a limiting factor for wheat production and food *** priming has been shown to increase drought tolerance in ***,the underlying mechanisms are *** the present study,the genes encoding the biosynthesis and metabolism of abscisic acid(ABA)and jasmonic acid(JA),as well as genes involved in the ABA and JA signaling pathways were up-regulated by drought *** concentrations of JA and ABA increased following drought *** interplay between JA and ABA in plant responses to drought priming was further investigated using inhibitors of ABA and JA *** of fluridone(FLU)or nordihydroguaiaretic acid(NDGA)to primed plants resulted in lower chlorophyll-fluorescence parameters and activities of superoxide dismutase and glutathione reductase,and higher cell membrane damage,compared to primed plants(PD)under drought ***+ABA,but not FLU+JA,restored priming-induced tolerance,as indicated by a finding of no significant difference from PD under drought *** drought priming,NDGA induced the suppression of ABA accumulation,while FLU did not affect JA *** results were consistent with the expression of genes involved in the biosynthesis of ABA and *** suggest that ABA and JA are required for priming-induced drought tolerance in wheat,with JA acting upstream of ABA.

关键词： Wheat Drought priming Abscisic acid Jasmonic acid Antioxidant activity

Organoid-derived human retinal progenitor cells promote early dedifferentiation of Müller glia in Royal College of Surgeons rats

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International Journal of Ophthalmology(English edition) 2023年第4期16卷 483-498页

作者： Qiang Guo Yu-xiao Zeng Shu-Dong huang Ting Zou Zheng-qin Yin Southwest Hospital/Southwest Eye Hospital Third Military Medical University(Army Medical University)Chongqing 400038China Key Lab of Visual Damage and Regeneration&Restoration of Chongqing Chongqing 400038China

AIM:To explore whether the subretinal transplantation of retinal progenitor cells from human embryonic stem cell-derived retinal organoid(h ERO-RPCs)could promote Müller glia dedifferentiation and transdifferentiation,thus improving visual function and delaying retinal degenerative ***:h ERO-RPCs were subretinally transplanted into Royal College of Surgeons(RCS)***(ERG)recording was performed at 4 and 8wk postoperation to assess retinal *** immunofluorescence,the changes in outer nuclear layer(ONL)thickness and retinal Müller glia were explored at 2,4,and 8wk *** verify the effect of h ERO-RPCs on Müller glia in vitro,we cocultured h ERO-RPCs with Müller glia with a Transwell *** coculture,Ki67 staining and quantitative polymerase chain reaction(q PCR)were performed to measure the proliferation and m RNA levels of Müller glia *** migration experiment was used to detect the effect of h ERO-RPCs on Müller glial *** between two groups were performed by the unpaired Student’s t-test,and comparisons among multiple groups were made with one-way ANOVA followed by Tukey’s multiple comparison ***:The visual function and ONL thickness of RCS rats were significantly improved by transplantation of h ERO-RPCs at 4 and 8wk *** addition to inhibiting gliosis at 4 and 8wk postoperation,h ERO-RPCs significantly increased the expression of dedifferentiation-associated transcriptional factor in Müller glia and promoted the migration at 2,4 and 8wk postoperation,but not the transdifferentiation of these cells in RCS *** vitro,using the Transwell system,we found that h ERO-RPCs promoted the proliferation and migration of primary rat Müller glia and induced their dedifferentiation at the m RNA ***:These results show that h ERO-RPCs might promote early dedifferentiation of Müller glia,which may provide novel insights into the mechanisms of stem cell

关键词： retinal degeneration retinal organoid retinal progenitor cells subretinal transplantation Muller glia dedifferentiation

Long term effects of artificial rearing before weaning on the growth performance, ruminal microbiota and fermentation of fattening lambs

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Journal of Integrative Agriculture 2022年第4期21卷 1146-1160页

作者： huang Wen-qin CUI Kai HAN Yong CHAI Jian-min WANG Shi-qin LÜxiao-kang DIAO Qi-yu ZHANG Nai-feng Institute of Feed Research Chinese Academy of Agricultural Sciences/Key Laboratory of Feed Biotechnology of the Ministry of Agriculture and Rural AffairsBeijing 100081P.R.China Guizhou Institute of Animal Husbandry and Veterinary Science Guizhou 550005P.R.China Department of Animal Science Division of AgricultureUniversity of ArkansasFayettevilleAR72701USA

Early life intervention is important to shape the gut microbiome profiles of adult animals due to the tremendous alteration of diet components. Nevertheless, there is still no unified understanding about its long-term effects in lambs. In this study, sixty 20-day-old lambs were assigned into ewe-rearing(ER) and artificial-rearing(AR) treatments to evaluate the effects of AR strategy on ruminal microbiota, fermentation, and morphology of pre-weaning lambs(from 20 to 60 days of age) and its long-term effects in the fattening stage(from 61 to 180 days of age). During the pre-weaning stage, ER lambs were breastfed and supplemented starter, while AR lambs were artificially fed with milk replacer and starter. During the fattening stage, all lambs in both treatments were fed with the same fattening diets. At 60, 120 and 180 days of age, 6 lambs from each group were slaughtered to collect rumen content and tissue samples. Compared with ER lambs, the dry matter feed intakes of AR lambs increased(P0.05), it was higher(P<0.05) in AR lambs compared with ER lambs at the fattening stage. The rumen keratin layer of AR lambs was thinner(P<0.05) than that of ER lambs. Along with lamb growth from 60 to 180 days of age, the differences in rumen bacterial diversity between AR and ER treatments grew more distinct(P<0.05). Compared with ER lambs, AR lambs increased(P<0.05) rumen bacteria abundance, such as phylum Spirochaetes and genus Treponema at 60 days of age, phylum Actinobacteria and genus Succiniclasticum at 120 days of age, and phylum Proteobacteria at 180 days of age, but decreased genus Selenomonas from 60 to 180 days of age, and Anaerovibrio at 180 days of age. In summary,

关键词： artificial rearing lamb rumen microbiome rumen fermentation growth

Self-perceived burden and influencing factors in patients with cervical cancer administered with radiotherapy

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World Journal of Clinical Cases 2021年第17期9卷 4188-4198页

作者： Ting Luo Rong-Zhi Xie Yan-Xia huang xiao-Hua Gong Hui-Ying qin Yi-xiao Wu Cancer Center The Fifth Affiliated Hospital of Sun Yat-Sen UniversityZhuhai 519000Guangdong ProvinceChina Cardiovascular Disease Center The Fifth Affiliated Hospital of Sun Yat-Sen UniversityZhuhai 519000Guangdong ProvinceChina Nursing Department Sun Yat-Sen University Cancer CenterGuangzhou 510060Guangdong ProvinceChina Power Operation Department The Fifth Affiliated Hospital of Sun Yat-Sen UniversityZhuhai 519000Guangdong ProvinceChina

BACKGROUND Cervical cancer is the fourth commonest malignancy in women around the *** represents the second most commonly diagnosed cancer in South East Asian women,and an important cancer death cause in women of developing *** collected in 2018 revealed 5690000 cervical cancer cases worldwide,85%of which occurred in developing *** To assess self-perceived burden(SPB)and related influencing factors in cervical cancer patients undergoing *** Patients were prospectively included by convenient sampling at The Fifth Affiliated Hospital of Sun Yat-Sen University,China between March 2018 and March *** survey was completed using a self-designed general information questionnaire,the SPB scale for cancer patients,and the self-care self-efficacy scale,Strategies Used by People to Promote Health,which were delivered to patients with cervical cancer undergoing *** data are expressed as the mean±*** data are expressed as frequencies or *** were the spouse,offspring,and other in 46.4,40.9,and 12.7%,respectively,and the majority were male(59.1%).As for pathological type,90 and 20 cases had squamous and adenocarcinoma/adenosquamous carcinomas,*** IV disease was found in 12(10.9%)*** A total of 115 questionnaires were released,and five patients were excluded for too long evaluation time(n=2)and the inability to confirm the questionnaire contents(n=3).Finally,a total of 110 questionnaires were *** were aged 31-79 years,with the 40-59 age group being most represented(65.4%of all cases).Most patients were married(91.8%)and an overwhelming number had no religion(92.7%).Total SPB score was 43.13±*** was associated with the place of residence,monthly family income,payment method,transfer status,the presence of radiotherapy complications,and the presence of pain(P<0.05).The SPB and self-care self-efficacy were negatively correlated(P<0.01).In multiva

关键词： Cervical cancer Radiotherapy Self-perceived burden Influencing factors Self-perceived burden Prospective research

A user requirements-oriented privacy policy self-adaption scheme in cloud computing

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Frontiers of Computer Science 2023年第2期17卷 33-44页

作者： Changbo KE Fu xiao Zhiqiu huang Fangxiong xiao School of Computer Science Nanjing University of Posts and TelecommunicationsNanjing 210003China College of computer science and technology Nanjing University of Aeronautics and AstronauticsNanjing 210016China School of Software Engineering Jinling Institute of TechnologyNanjing 210000China

In an ever-changing environment,Software as a Service(SaaS)can rarely protect users'*** able to manage and control the privacy is therefore an important goal for *** the participant of composite service is substituted,it is unclear whether the composite service satisfy user privacy requirement or *** this paper,we propose a privacy policies automatic update method to enhance user privacy when a service participant change in the composite ***,we model the privacy policies and service variation ***,according to the service variation rules,the privacy policies are automatically generated through the negotiation between user and service ***,we prove the feasibility and applicability of our method with the *** the service quantity is 50,ratio that the services variations are successfully checked by monitor is 81%.Moreover,ratio that the privacy policies are correctly updated is 93.6%.

关键词： cloud computing SaaS service privacy protec-tion privacy policies update

Low glycemic index:The next target for rice production in China?

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Journal of Integrative Agriculture 2021年第6期20卷 1727-1729页

作者： huang Min HU Li-qin Crop and Environment Research Center for Human Health College of AgronomyHunan Agricultural UniversityChangsha 410128P.R.China

China has 22%of the world’s population but only 7% of the world’s arable *** security has been a chief mission of the Chinese state since the beginning of the dynastic era and remains a primary objective in the early 21st *** a result, high yield has been the first priority of farmers,researchers and agricultural agencies in China for a long time.

关键词： farmers arable index