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Petroleum Science 2024年第2期21卷 1415-1428页

作者： Miao Wang chao feng School of Business Zhengzhou UniversityZhengzhou450001HenanChina School of Economics and Business Administration Chongqing UniversityChongqing400030China

This paper attempts to explore the decoupling relationship and its drivers between industrial economic increase and energy-related CO_(2) emissions(ICE). Firstly, the decoupling relationship was evaluated by Tapio index. Then, based on the DEA meta-frontier theory framework which taking into account the regional and industrial heterogeneity and index decomposition method, the driving factors of decoupling process were explored mainly from the view of technology and efficiency. The results show that during2000-2019, weak decoupling was the primary state. Investment scale expansion was the largest reason hindering decoupling process of industrial increase from ICE. Both energy saving and production technology achieved significant progress, which facilitated the decoupling process. Simultaneously, the energy technology gap and production technology gap among regions have been narrowed, and played a role in promoting decoupling process. On the contrary, both scale economy efficiency and pure technical efficiency have inhibiting effects on decoupling process. The former indicates that the scale economy of China's industry was not conducive to improve energy efficiency and production efficiency, while the latter indicates that resource misallocation problem may exist in both energy market and product market.

关键词： China's industrial sector Decoupling process Meta-frontier DEA Index decomposition method Driving factors

Relationship Between Behavioral Frequency and Reproductive Potential of Female Alpine Musk Deer in Captivity

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Agricultural Sciences in China 2008年第12期7卷 1497-1502页

作者： MENG Xiu-xiang Perkins Genevieve YANG Qi-sen feng Zuo-jian XU Hong-fa feng jin-chao ZHAO Chang-jie HUI Cen-yi College of Life and Environment Sciences Central University for Nationalities Beijing 100081 P.R.China Institute of Zoology Chinese Academy of Sciences Beijing 100080 P.R.China College of Life Science East China Normal University Shanghai 200062 P.R.China

Between June 2005 and February 2006, focal sampling and all occurrence behavior recording were used to quantify the behavioral patterns of captive female alpine musk deer （Moschus sifanicus） at Xinglongshan Musk Deer Farm, Gansu Province, China. Copulation success was used to differentiate individuals into two groups （successful and unsuccessful） and to provide a basis for behavioral comparisons, throughout both mating （rut） and non mating seasons. The results indicated significant differences between the behavior patterns of successful and unsuccessful females; however, the reproductive season played an important environmental factor. Pooling results across reproductive seasons, successfully copulating females showed significantly higher frequencies of vigilance and lower frequency of feeding behavior as compared with unsuccessfully copulating females. In the non-mating season, unsuccessfully copulating females had higher frequency of self-directed behavior, environment sniffing, and were less aggressive than successful copulating females. Furthermore, females who were successful at copulating also demonstrated tail-pasting behavior; however, this only occurred during the rut season. The results of this study can improve management practices for musk deer farms through increasing mating success and reducing maintenance costs. Furthermore, variation in behavior may also be used as a predictor of copulation success and reproductive potential, whereby females can be grouped and separated according to their reproductive history and past reproduction success.

关键词： alpine musk deer captive female behavioral frequency copulation

Effectiveness and safety of tenofovir amibufenamide in chronic hepatitis B patients

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World Journal of Gastroenterology 2024年第26期30卷 3261-3263页

作者： Li-Yang Meng chao-Ting Yang Jian-feng Bao jin-Song Huang The Fourth Clinical Medical College Zhejiang Chinese Medical UniversityHangzhou 310053Zhejiang ProvinceChina Department of Hepatology Hangzhou Xixi HospitalZhejiang University School of MedicineHangzhou 310023Zhejiang ProvinceChina

This letter to the editor relates to the study entitled“Tenofovir amibufenamide vs tenofovir alafenamide for treating chronic hepatitis B:A real-world study”,which was recently published by Peng et *** B virus infection represents a significant health burden worldwide and can lead to cirrhosis and even liver *** antiviral drugs currently used to treat patients with chronic hepatitis B infection still have many side effects,so it is crucial to identify safe and effective drugs to inhibit viral replication.

关键词： Tenofovir amibufenamide Chronic hepatitis B Non-alcoholic fatty liver disease Alanine transaminase normalization Virological response

Quantum phase transition of the Jaynes-Cummings model

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Science China(Physics,Mechanics & Astronomy) 2024年第1期67卷 1-9页

作者： Cheng Liu jin-feng Huang Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education Key Laboratory for Matter Microstructure and Function of Hunan ProvinceDepartment of Physics and Synergetic Innovation Center for Quantum Effects and ApplicationsInstitute of Interdisciplinary StudiesHunan Normal UniversityChangsha 410081China

Herein,we propose an experimentally feasible scheme to show the quantum phase transition of the Jaynes-Cummings(JC)model by modulating the transition frequency of a two-level system in a quantum Rabi model with strong *** tuning the modulation frequency and amplitude,the ratio of the effective coupling strength of the rotating terms to the effective cavity(atomic transition)frequency can enter the deep-strong coupling regime,while the counter-rotating terms can be ***,a deep-strong JC model is *** ratio of the coupling strength to resonance frequencies in the deep-strong JC model is two orders of magnitude larger than the corresponding ratio in the original quantum Rabi *** scheme can be employed in atom-cavity resonance and off-resonance cases,and it is valid over a broad *** nonzero average cavity photons of the ground state indicate the emergence of a quantum phase ***,we demonstrate the dependence of the phase diagram on the atom-cavity detuning and modulation *** the parameters used in our scheme are within the reach of current experimental *** scheme provides a new mechanism for investigating the critical phenomena of finite-sized systems without requiring classical field limits,thereby opening a door for studying fundamental quantum phenomena occurring in the ultrastrong and even deep-strong coupling regimes.

关键词： Jaynes-Cummings model quantum phase transition frequency modulation

Simultaneous purification of minor components in natural products using twin-column recycling chromatography with a step solvent gradient

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Chinese Journal of Chemical Engineering 2024年第5期69卷 212-219页

作者： Guangxia jin Yuxue Wu feng Wei School of Biological and Chemical Engineering NingboTech UniversityNingbo 315100China

The isolation of minor components from complex natural product matrices presents a significant challenge in the field of purification science due to their low concentrations and the presence of structurally similar *** study introduces an optimized twin-column recycling chromatography method for the efficient and simultaneous purification of these elusive *** introducing water at a small flowing rate between the twin columns,a step solvent gradient is created,by which the leading edge of concentration band would migrate at a slower rate than the trailing edge as it flowing from the upstream to downstream ***,the band broadening is counterbalanced,resulting in an enrichment effect for those minor components in separation ***,two target substances,which showed similar peak position in high performance liquid chromatography(HPLC)and did not exceed 1.8%in crude paclitaxel were selected as target compounds for *** using the twin-column recycling chromatography with a step solvent gradient,a successful purification was achieved in getting the two with the purity almost 100%.We suggest this method is suitable for the separation of most components in natural produces,which shows higher precision and recovery rate compared with the common lab-operated separation ways for natural products(thin-layer chromatography and prep-HPLC).

关键词： Solvent gradient Twin-column recycling chromatography Purification Minor component Natural products

GNAS mutations suppress cell invasion by activating MEG3 in growth hormone–secreting pituitary adenoma

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Oncology Research 2024年第6期32卷 1079-1091页

作者： chao TANG CHUNYU ZHONG JUNHAO ZHU feng YUAN jin YANG YONG XU CHIYUAN MA Department of Neurosurgery Affiliated Jinling HospitalMedical School of Nanjing UniversityNanjing210002China Department of Neurosurgery Children’s Hospital of Nanjing Medical UniversityNanjing210019China Affiliated Eye Hospital Nanjing Medical UniversityNanjing210029China Department of Neurosurgery Jinling HospitalSouthern Medical UniversityNanjing210002China Department of Neurosurgery Jinling HospitalNanjing Medical UniversityNanjing210002China

Approximately 30%–40%of growth hormone–secreting pituitary adenomas(GHPAs)harbor somatic activating mutations in GNAS(αsubunit of stimulatory G protein).Mutations in GNAS are associated with clinical features of smaller and less invasive ***,the role of GNAS mutations in the invasiveness of GHPAs is *** mutations were detected in GHPAs using a standard polymerase chain reaction(PCR)sequencing *** expression of mutation-associated maternally expressed gene 3(MEG3)was evaluated with ***3 was manipulated in GH3 cells using a lentiviral expression *** invasion ability was measured using a Transwell assay,and epithelial–mesenchymal transition(EMT)-associated proteins were quantified by immunofluorescence and western ***,a tumor cell xenograft mouse model was used to verify the effect of MEG3 on tumor growth and *** invasiveness of GHPAs was significantly decreased in mice with mutated GNAS compared with that in mice with wild-type ***,the invasiveness of mutant GNASexpressing GH3 cells ***3 is uniquely expressed at high levels in GHPAs harboring mutated ***,MEG3 upregulation inhibited tumor cell invasion,and conversely,MEG3 downregulation increased tumor cell ***,GNAS mutations inhibit EMT in ***3 in mutated GNAS cells prevented cell invasion through the inactivation of the Wnt/β-catenin signaling pathway,which was further validated in *** data suggest that GNAS mutations may suppress cell invasion in GHPAs by regulating EMT through the activation of the MEG3/Wnt/β-catenin signaling pathway.

关键词： GHPAs GNAS mutation MEG3 β-catenin EMT

离子交换树脂均匀沉淀法制备Nd2O3纳米粒子的研究

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光谱学与光谱分析 2008年第10期28卷 2413-2416页

作者：刘颖冯金朝中央民族大学生命与环境科学学院北京100081 内蒙古师范大学化学与环境科学学院内蒙古呼和浩特010022

以Nd(NO)3·6H2O和(NH4)2C2O4·2H2O为原料,分别采用阴离子交换树脂均匀沉淀法和阳离子交换树脂均匀沉淀法制备Nd2O3前驱体,经700℃焙烧后制得Nd2O3纳米晶体a和b。分别用热分析、X射线粉末衍射、透射电子显微镜、高分辨电子显微镜、选... 详细信息

以Nd(NO)3·6H2O和(NH4)2C2O4·2H2O为原料,分别采用阴离子交换树脂均匀沉淀法和阳离子交换树脂均匀沉淀法制备Nd2O3前驱体,经700℃焙烧后制得Nd2O3纳米晶体a和b。分别用热分析、X射线粉末衍射、透射电子显微镜、高分辨电子显微镜、选用电子衍射和BET等对前驱体和样品进行表征,并对均匀沉淀形成机理进行了探讨。结果表明,制备的Nd2O3纳米晶体属六方晶系,样品分散性较好,平均粒径约为26～32nm;Nd2O3纳米晶体清晰、有序的电子衍射点阵,表明晶体的结晶度较好;样品a和样品b的比表面积分别是42.57和29.43m2·g-1。离子交换树脂均匀沉淀法具有操作简单易行,对设备要求不高,成本低,同时避免使用有机溶剂和表面活性剂,污染小,后处理容易,离子交换树脂可再生重复使用等优点。

关键词：离子交换树脂均匀沉淀法 Nd2O3 纳米材料

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内蒙古地区沙生植物饲用养分含量分析研究

光谱学与光谱分析 2008年第9期28卷 2161-2164页

作者：刘颖冯金朝中央民族大学生命与环境科学学院

利用化学和仪器方法,测定了内蒙古地区七种沙生植物叶、茎、株作为饲养成分的含量（干物质百分率）：钙0.73～3.89,磷0.043～0.34,硒0.026～2.8,粗蛋白质3.38～13.92,粗脂肪3.97～15.03,总糖14.89～35.78,灰分0.61～14.33,中性洗涤纤维2... 详细信息

利用化学和仪器方法,测定了内蒙古地区七种沙生植物叶、茎、株作为饲养成分的含量（干物质百分率）：钙0.73～3.89,磷0.043～0.34,硒0.026～2.8,粗蛋白质3.38～13.92,粗脂肪3.97～15.03,总糖14.89～35.78,灰分0.61～14.33,中性洗涤纤维26.66～79.72,酸性洗涤纤维27.03～69.01,七种沙生植物叶、茎氨基酸总含量变动范围为2.30%～11.26%。除沙枣外,其余六种沙生植物叶、茎钙/磷均高于苜蓿叶粉和茎粉;硒含量均比植物中一般硒含量高;粗蛋白质达到了优质禾谷类粮食蛋白含量的水平;叶、茎、全株粗脂肪含量均高于玉米秸秆和小麦秸秆;叶中总糖含量均大于其茎和株;灰分含量高;叶中性洗涤纤维均低于苜蓿叶粉,茎中性纤维均高于苜蓿叶粉;除梭梭外,其余植物茎酸性洗涤纤维均高于苜蓿茎粉。实验表明,七种沙生植物适宜于家畜饲养的要求,是沙区发展草地畜牧业优质的饲草资源。

关键词：沙生植物饲用养分内蒙古地区

离子交换树脂均匀沉淀法制备MgO纳米粒子(英文)

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人工晶体学报 2009年第2期38卷 519-524页

作者：刘颖冯金朝中央民族大学生命与环境科学学院北京100081 内蒙古师范大学化学与环境科学学院呼和浩特010022

以(Mg(NO3)2·6H2O,(NH4)2CO3和NH3·H2O为原料,采用两种离子交换树脂均匀沉淀法分别制备MgO纳米粒子。用热分析、X射线粉末衍射(XRD)、透射电子显微镜(TEM)、高分辨电子显微镜(HRTEM)、选区电子衍射(SAED)和BET等对所制备的MgO粒子进... 详细信息

以(Mg(NO3)2·6H2O,(NH4)2CO3和NH3·H2O为原料,采用两种离子交换树脂均匀沉淀法分别制备MgO纳米粒子。用热分析、X射线粉末衍射(XRD)、透射电子显微镜(TEM)、高分辨电子显微镜(HRTEM)、选区电子衍射(SAED)和BET等对所制备的MgO粒子进行了表征。结果表明:经700℃焙烧后制备的MgO纳米晶体属六方晶系,样品分散性较好,平均粒径约为25nm;MgO纳米晶体清晰、有序的电子衍射点阵,表明晶体的结晶度较好;纳米粒子a和b的比表面积分别为31m2/gand32m2/g。

关键词：离子交换树脂均匀沉淀法 MgO纳米粒子制备

Clinical application of COVID-19 vaccine in liver transplant recipients

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Hepatobiliary & Pancreatic Diseases International 2024年第4期23卷 339-343页

作者： feng-chao Liu Man Xie Wei Rao Division of Hepatology Liver Disease CenterThe Affiliated Hospital of Qingdao UniversityQingdao 266000China Organ Transplantation Center The Affiliated Hospital of Qingdao UniversityQingdao 266000China Institute of Organ Donation and Transplantation of Qingdao University Qingdao 266000China Department of Gastroenterology The Affiliated Hospital of Qingdao UniversityQingdao 266000China

Background:Solid organ transplant(SOT)activities,such as liver transplant,have been greatly influenced by the pandemic of coronavirus disease 2019(COVID-19),a disease caused by severe acute respiratory syndrome coronavirus 2(SARS-CoV-2).Immunosuppressed individuals of liver transplant recipients(LTRs)tend to have a high risk of COVID-19 infection and related ***,COVID-19 vaccination has been recommended to be administered as early as possible in *** sources:The keywords“liver transplant”,“SARS-CoV-2”,and“vaccine”were used to retrieve articles published in ***:The antibody response following the 1st and 2nd doses of vaccination was disappointingly low,and the immune responses among LTRs remarkably improved after the 3rd or 4th dose of *** the 3rd or 4th dose of COVID-19 vaccine increased the antibody titer,a proportion of patients remained ***,recent studies showed that SARS-CoV-2 vaccine could trigger adverse events in LTRs,including allograft rejection and liver ***:This review provides the recently reported data on the antibody response of LTRs following various doses of vaccine,risk factors for poor serological response and adverse events after vaccination.

关键词： Liver transplant COVID-19 SARS-CoV-2 Vaccine Antibody response