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Stable striped state in a rotating two-dimensional spin–orbit coupled spin-1/2 Bose–Einstein condensate

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Communications in Theoretical Physics 2022年第7期74卷 114-122页

作者： Xuan Xu Chao Gao Ji lin hui-jun li Institute of Nonlinear Physics and Department of Physics Zhejiang Normal UniversityJinhua 321004China

We consider an effective two-dimensional Bose–Einstein condensate with some spin–orbit coupling(SOC) and a rotation term in an external harmonic potential. We find the striped state,and analyze the effects of SOC, the external potential, and the rotation frequency/direction on the profile and the stability of the striped state. Without the rotation term, the two spinor components exhibit striped pattern, and the numbers of stripes in the two components are always an odd–even or an even–odd. With the increase of the SOC strength, the number of stripes in both components increases, while the difference of the striped numbers is always one. After adding the rotation term, the profiles of the spinor components change qualitatively, and the change regulation of the striped numbers differs, while the difference of the striped numbers is still one. In addition, we find that the rotation direction only makes the striped state of the two spinor components exchange each other, though the clockwise and counterclockwise rotation directions are inequivalent with the presence of SOC. Such regulation is different from the previous study. And the rotation frequency gives rise to the transition from the striped state to a mixture of the striped state and vortex state. Furthermore, we prove the stability of these states by the evolution and linear stability analysis.

关键词： spin-orbit coupling Bose-Einstein condensate the striped state

Azvudine reduces the in-hospital mortality of COVID-19 patients:A retrospective cohort study

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Acta Pharmaceutica Sinica B 2023年第11期13卷 4655-4660页

作者： Kaican Zong hui Zhou Wen li E Jiang Yi liu Shiying li Department of Respiratory Medicine the Seventh People's Hospital of Chongqing(Affiliated Central Hospital of Chongqing University of Technology)Chongqing 400054China Department of Infectious Diseases Key Laboratory of Molecular Biology for Infectious Diseases(Ministry of Education)Institute for Viral Hepatitisthe Second Affiliated HospitalChongqing Medical UniversityChongqing 400010China

In our retrospective cohort study,we aim to explore whether Azvudine modifies the risk of death in COVID-19 *** was conducted on the medical records of patients,consecutively admitted for COVID-19 pneumonia to two hospitals in Chongqing,*** on Azvudine treatment exposure,the patients were divided into Azvudine group and non-Azvudine *** used 1:2 ratio propensity score matching(PSM)in our study to adjust for confounding factors and differences between Azvudine and non-Azvudine *** were 1072 patients included in our original *** 1:2 ratio PSM,the Azvudine group included 195 patients and non-Azvudine group included 390 *** results showed that Azvudine treatment was associated with improved in-hospital mortality in overall population(OR 0.375,95%CI 0.225-0.623,Plity in overall population(11%vs.24%,Plity in overall COVID-19 patients,severe,and critical subgroup population.

关键词： Azvudine COVID-19 Pneumonia Mortality

多壁碳纳米管和十二烷基苯磺酸钠对SBR运行性能及微生物种群结构的影响

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环境工程学报 2024年第6期18卷 1480-1488页

作者：冯楚娴李梅文慧杨晓慧林金融卢韦灼孙嘉阳李宜泽裴建川浙江农林大学环境与资源学院/碳中和学院杭州311300

随着多壁碳纳米管(multi-walled carbon nanotubes, MWCNTs)的广泛应用,其进入污水处理系统后可能对活性污泥系统产生影响。表面活性剂是污水中的常见污染物,MWCNTs对表面活性剂的吸附可能会改变MWCNTs对活性污泥系统的影响。为探明MWC... 详细信息

随着多壁碳纳米管(multi-walled carbon nanotubes, MWCNTs)的广泛应用,其进入污水处理系统后可能对活性污泥系统产生影响。表面活性剂是污水中的常见污染物,MWCNTs对表面活性剂的吸附可能会改变MWCNTs对活性污泥系统的影响。为探明MWCNTs和表面活性剂对活性污泥系统的影响及机制,以十二烷基苯磺酸钠(sodium dodecylbenzene sulfonate, SDBS)为表面活性剂代表,研究MWCNTs和SDBS单独和共同存在条件下对序批式活性污泥反应器(sequencing batch reactor, SBR)运行性能及微生物种群结构的影响。结果表明:SBR连续运行22 d期间,SDBS和MWCNTs对系统COD去除率有不同程度的增强,MWCNTs对总氮去除率影响不大,而SDBS对总氮去除有轻微抑制。高通量测序结果表明:MWCNTs和SDBS均降低了微生物物种数量,并对微生物种群结构造成显著影响,门水平上,Chloroflexi(绿弯菌门)和Nitrospirae(硝化螺旋菌门)相对丰度下降,而Bacteroidetes(拟杆菌门)相对丰度增加,属水平上,Dechloromonas(脱氯单胞菌属)相对丰度从31%下降至20%左右,MWCNTs单独存在使得Zoogloea(动胶菌属)相对丰度从18%增加到30%,而SDBS存在使得Thauera(陶厄氏菌属)相对丰度从10%增加到20%以上。两者共存条件下,SDBS对微生物种群结构影响占主导地位。

关键词：多壁碳纳米管 SDBS 活性污泥微生物种群

用于微量生物样本检测的显微动态光散射系统研制

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光学技术 2024年第4期50卷 399-405页

作者：范彦平李长乐张鹏程胡师巫建东杨慧上海理工大学光电信息与计算机工程学院上海200093 中国科学院深圳先进技术研究院生物医学与健康工程研究所广东深圳518055

针对微量生物样品的粒径检测需求,提出了一种显微动态光散射测量系统。传统的动态光散射技术在微量生物样品检测中通常需要毫升级别的样品,这种大量样品消耗不适用于微量生物样品的检测。为解决这一问题,设计了一套融合普通显微镜和动... 详细信息

针对微量生物样品的粒径检测需求,提出了一种显微动态光散射测量系统。传统的动态光散射技术在微量生物样品检测中通常需要毫升级别的样品,这种大量样品消耗不适用于微量生物样品的检测。为解决这一问题,设计了一套融合普通显微镜和动态光散射技术的显微动态光散射系统。通过整合这两种技术,文章成功将测量样品的用量降低到几十微升的水平,实现了两个数量级的提升,从而显著减少了样品的消耗,满足了实验室对微量生物样品检测的需求。为验证该系统的可行性,对不同材质和尺寸的纳米颗粒以及生物外泌体样本进行了评估。实验结果显示,针对60nm的聚苯乙烯微球颗粒和208.6nm的外泌体颗粒的测量尺寸误差分别为1.5%和-3.4%,与实际尺寸吻合良好,证明了该系统在实际应用中的可行性。

关键词：动态光散射生物样品检测纳米颗粒共聚焦显微尺寸分析

Facile Synthesis of Polycarbonate Diol via Copolymerization of CO_(2) and Cyclohexene Oxide Catalysed by a Combination of One-Component Phosphonium Borane Lewis Pair and Water

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Chinese Journal of Polymer Science 2023年第5期41卷 735-744,I0009页

作者： Xiao-Wu Wang Ji-Wen hui Yu-Tao li Yan-Ru Gu Zhi-Bo li State Key Laboratory Base of Eco-Chemical Engineering/College of Chemical Engineering Qingdao University of Science and TechnologyQingdao 266042China Key Laboratory of Biobased Polymer Materials Shandong Provincial Education Department/School of Polymer Science and EngineeringQingdao University of Science and TechnologyQingdao 266042China

Well-defined polycarbonate diol was successfully synthesized through a strategy using a combination of organocatalyst and *** strategy was less developed in organocatalyzed polymerization and frequently regarded as side ***,one-component phosphonium borane Lewis pairs PB1-PB8 were successfully applied in the copolymerization of CO_(2) and cyclohexene oxide(CHO)to generate poly(CHO-alt-CO_(2))carbonate(PCHC).Parameters of linker length and counter anion effects on the catalyst activity were *** was found that Lewis pair PB3 served as a dual initiator and catalyst in the copolymerization of CHO and CO_(2) with or without the presence of *** contrast,Lewis pair PB8 can serve as a true catalyst for the preparation of well-definedα,ω-hydroxyl PCHC *** was achieved by introducing a labile CF3COO group as counter anion through anion exchange reaction while water molecules acted as chain transfer *** function of trifluoroacetate group in the polymerization process was investigated in detail and possible mechanism was *** changing the amount of water and catalyst loading,PCHC diols with varied molecular weight(1.5 kg/mol to 7.5 kg/mol),low dispersities(D99%)could be easily *** low molecular weight PCHC diol was used as a bifunctional macroinitiator for the ring-opening polymerization of L-lactide(LLA)to afford ABA triblock copolymer in one-pot synthesis.

关键词： Polycarbonate Phosphonium borane Lewis pair CO_(2)utilization Organocatalysis Ring-opening polymerization

Experimental investigation and thermodynamic assessment of La-Y-Ni ternary system in Ni-rich corner

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Rare Metals 2023年第4期42卷 1316-1331页

作者： Sheng-Xiang Wu li Wang hui-Ping Yuan Qun Luo Qian li Kuo-Chih Chou State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization Baotou Research Institute of Rare EarthsBaotou014030China State Key Laboratory of Advanced Special Steels Shanghai Key Laboratory of Advanced FerrometallurgySchool of Materials Science and EngineeringShanghai UniversityShanghai200444China GRIMAT Engineering Institute Co. Ltd.Beijing101407China National Engineering Research Center for Magnesium Alloys Chongqing UniversityChongqing400044China

La-Y-Ni alloys exhibit high discharge capacity due to the formation of AB_(3-3.8)-type(A=La,Y;B=Ni)intermetallic ***,the stable composition and temperature range for this type of phase are rarely reported,which restrains the development of La-Y-Ni hydrogen storage alloys with stable structure and high *** paper focuses on the phase equilibria of the La-Y-Ni ternary system in Ni-rich *** phase constitution,microstructure,and equilibrated composition were experimentally determined at 1273 and 1148 K using X-ray diffraction(XRD),scanning electron microscopy(SEM),and energy-dispersive spectroscopy(EDS).The solubilities of La and Y in the binary compounds were *** ternary compounds,3R-LaY_(2)Ni_(9)with the structure of PuNi3 type and La_(0.5)Y_(0.5)Ni_(5)with the structure of CaCu5 type,existed at both *** on the experimental data,the thermodynamic description of LaY-Ni system was assessed by Calculation of Phase Diagram *** calculated isothermal sections agree with the experimental *** thermodynamic database is helpful for the design of La-Y-Ni hydrogen storage alloys.

关键词： La-Y-Ni system Phase equilibria Calculation of Phase Diagram(CALPHAD) Isothermal section Phase transformation

PLG-g-mPEG Mediated Multifunctional Nanoparticles for Photoacoustic Imaging Guided Combined Chemo/Photothermal Antitumor Therapy

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Chinese Journal of Polymer Science 2023年第4期41卷 538-546,I0007页

作者： Chong liu ling li Zhao-Pei Guo lin lin Yan-hui li Hua-Yu Tian School of Materials Science and Engineering Changchun University of Science and TechnologyChangchun130022China Key Laboratory of Polymer Ecomaterials Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022China College of Chemistry and Chemical Engineering Xiamen UniversityXiamen361005China School of Materials Science and Engineering Xiamen University of TechnologyXiamen361024China

Under laser irradiation,photothermal therapy(PTT)effectively ablates tumors above 50℃.However,hyperthermia can cause additional damage due to the inevitable heat spread to surrounding healthy ***,nanoparticles named as GI@P NPs were designed for enhanced PTT with heat shock protein 90(HSP90)inhibition at temperatures below 50℃to achieve optimal cancer therapy and avoid surrounding ***@P NPs were done by co-loading Garcinia cambogia acid(GA)and photosensitizer IR783 in polymer PLG-g-mPEG to form a nanomedicine,where IR783 with excellent photoacoustic(PA)signal acted as an excellent photothermal therapeutic agent that converted the laser energy into heat to kill tumor cells,GA was used as antitumor drug for chemotherapy and an inhibitor of HSP90 to overcome the heat resistance of tumors for efficient cryo-photothermal therapy,and PLG-g-mPEG can encapsulate IR783 and GA to increase biocompatibility and accumulate effectively in the *** GI@P NPs were injected into the mice,we could observe that the PA signals gradually increased in the tumor region and showed the strongest PA signals at 12 *** laser irradiation,the tumor temperature of the mice could raise to about 43.5℃,and the tumor was significantly inhibited after long-term monitoring by PA *** a result,gentle PTT produced by GI@P NPs exhibited good antitumor effects at relatively low temperature and minimized nonspecific thermal damage to normal *** GI@P NPs as nanomedicine enriched our understanding of various applications of polymeric carriers,especially in the biomedical field.

关键词： Mild-temperature photothermal therapy Photoacoustic imaging Polymer carrier Combination therapy Co-loading

Panniculitis,an Uncommon Skin Manifestation in Adult Dermatomyositis

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International Journal of Dermatology and Venereology 2023年第2期6卷 96-101页

作者： Xiao-Jing Xing Song Wang An-Qi li zi-Hang li Bi-Wen lin Department of Dermatology Beijing Shijitan HospitalCapital Medical UniversityBeijing 100038China Department of Radiology First Medical Center of PLA General HospitalBeijing 100853China Department of Dermatology First Medical Center of Chinese PLA General HospitalBeijing 100853China

Objective:The skin manifestations of dermatomyositis(DM)are complex and diverse,with some rashes having diagnostic significance,while others have a certain suggestive effect on the patient’s condition,visceral damage,and *** case-cohort study was performed to investigate the skin manifestations of 205 adult inpatients with *** then analyzed the association between the clinical characteristics and panniculitis in adult patients with ***:This study was conducted at the First Medical Center of PLA General Hospital,Beijing,China from March 1,2016 to December 30,2020 with follow-up until December 31,*** case-cohort study involved 205 eligible participants with DM who met the criteria for idiopathic inflammatory *** data,cutaneous manifestations,and lesion locations were screened and *** samples were collected,and immunoblotting was used to detect 16 types of myositis-specific antibodies and myositis-associated ***:The results showed that 16(7.8%)of the 205 adult patients with DM had *** panniculitis was mainly distributed in the subcutaneous fat of the abdomen,buttocks,and *** condition was often accompanied by skin ulcers,atrophic scars,and ***,9(72.7%)of the 16 patients with panniculitis were positive for antibodies to nuclear matrix protein 2(anti-NXP2 antibodies).Conclusion:The data showed that panniculitis is an uncommon skin manifestation in adult patients with DM,with a positivity rate of 7.8%.The appearance of panniculitis is likely associated with anti-NXP2 antibodies.

关键词： adult dermatomyositis myositis-specific antibodies panniculitis anti-NXP2 antibody calcinosis

储能提升高比例新能源基地低碳-经济-可靠性能的效益分析

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南方电网技术 2024年第4期18卷 120-129页

作者：何耿生陈晖张世旭刘昱良李姚旺杜尔顺南方电网能源发展研究院广州510663 清华四川能源互联网研究院成都610299

储能具备灵活的功率调节与电能时移能力,其与系统多类型调控资源的协调优化有望为新型电力系统低碳、经济、可靠运行提供有力支撑。针对储能提升高比例新能源基地低碳、经济、可靠性能的效益进行研究。首先,建立了高比例新能源基地发电... 详细信息

储能具备灵活的功率调节与电能时移能力,其与系统多类型调控资源的协调优化有望为新型电力系统低碳、经济、可靠运行提供有力支撑。针对储能提升高比例新能源基地低碳、经济、可靠性能的效益进行研究。首先,建立了高比例新能源基地发电碳排放计量模型,提出高比例新能源基地低碳、经济、可靠性能量化评估指标;其次,建立了储能与高比例新能源基地的联合运行模拟模型,为含储能高比例新能源基地的优化运行提供决策依据;最后,针对蒙西区域电网开展全年时间尺度精细化运行模拟,分析不同储能容量配比下对系统低碳、经济、可靠运行性能的提升效益。算例结果验证了所提运行模拟模型的有效性,并指出随储能容量提升其对系统低碳、低碳、经济及可靠性能提升的边际效益逐步下降,优化制定储能配置容量有利于最大化其投资运行效益。

关键词：储能高比例新能源基地低碳优化经济调度可靠性提升