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Cao JK, Fan HQ, Xiao YB, Wang D, Liu CG, Peng XM, Gao XR, Tang SH, Han T, Mei YB, Liang HY, Wang SM, Wang F, Li QP. [Establishment and efficiency test of a clinical prediction model of bronchopulmonary dysplasia associated pulmonary hypertension in very premature infants]. Zhonghua Er Ke Za Zhi 2024; 62:129-137. [PMID: 38264812 DOI: 10.3760/cma.j.cn112140-20230912-00178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/25/2024]
Abstract
Objective: To develop a risk prediction model for identifying bronchopulmonary dysplasia (BPD) associated pulmonary hypertension (PH) in very premature infants. Methods: This was a retrospective cohort study. The clinical data of 626 very premature infants whose gestational age <32 weeks and who suffered from BPD were collected from October 1st, 2015 to December 31st, 2021 of the Seventh Medical Center of the People's Liberation Army General Hospital as a modeling set. The clinical data of 229 very premature infants with BPD of Hunan Children's Hospital from January 1 st, 2020 to December 31st, 2021 were collected as a validation set for external verification. The very premature infants with BPD were divided into PH group and non PH group based on the echocardiogram after 36 weeks' corrected age in the modeling set and validation set, respectively. Univariate analysis was used to compare the basic clinical characteristics between groups, and collinearity exclusion was carried out between variables. The risk factors of BPD associated PH were further screened out by multivariate Logistic regression, and the risk assessment model was established based on these variables. The receiver operating characteristic (ROC) area under curve (AUC) and Hosmer-Lemeshow goodness-of-fit test were used to evaluate the model's discrimination and calibration power, respectively. And the calibration curve was used to evaluate the accuracy of the model and draw the nomogram. The bootstrap repeated sampling method was used for internal verification. Finally, decision curve analysis (DCA) to evaluate the clinical practicability of the model was used. Results: A total of 626 very premature infants with BPD were included for modeling set, including 85 very premature infants in the PH group and 541 very premature infants in the non PH group. A total of 229 very premature infants with BPD were included for validation set, including 24 very premature infants in the PH group and 205 very premature infants in the non PH group. Univariate analysis of the modeling set found that 22 variables, such as artificial conception, fetal distress, gestational age, birth weight, small for gestational age, 1 minute Apgar score ≤7, antenatal corticosteroids, placental abruption, oligohydramnios, multiple pulmonary surfactant, neonatal respiratory distress syndrome (NRDS)>stage Ⅱ, early pulmonary hypertension, moderate-severe BPD, and hemodynamically significant patent ductus arteriosus (hsPDA) all had statistically significant influence between the PH group and the non PH group (all P<0.05). Antenatal corticosteroids, fetal distress, NRDS >stage Ⅱ, hsPDA, pneumonia and days of invasive mechanical ventilation were identified as predictive variables and finally included to establish the Logistic regression model. The AUC of this model was 0.86 (95%CI 0.82-0.90), the cut-off value was 0.17, the sensitivity was 0.77, and the specificity was 0.84. Hosmer-Lemeshow goodness-of-fit test showed that P>0.05. The AUC for external validation was 0.88, and the Hosmer-Lemeshow goodness-of-fit test suggested P>0.05. Conclusions: A high sensitivity and specificity risk prediction model of PBD associated PH in very premature infants was established. This predictive model is useful for early clinical identification of infants at high risk of BPD associated PH.
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Affiliation(s)
- J K Cao
- Department of Neonatology, Senior Department of Pediatrics, the Seventh Medical Center of the People's Liberation Army General Hospital (the Second School of Clinical Medicine, Southern Medical University), Beijing 100700, China
| | - H Q Fan
- Department of Cardiology, Hunan Children's Hospital, Changsha 410007, China
| | - Y B Xiao
- Department of Cardiology, Hunan Children's Hospital, Changsha 410007, China
| | - D Wang
- Department of Cardiology, Hunan Children's Hospital, Changsha 410007, China
| | - C G Liu
- Department of Neonatology, Senior Department of Pediatrics, the Seventh Medical Center of the People's Liberation Army General Hospital (the Second School of Clinical Medicine, Southern Medical University), Beijing 100700, China
| | - X M Peng
- Department of Neonatology, Hunan Children's Hospital, Changsha 410007, China
| | - X R Gao
- Department of Neonatology, Hunan Children's Hospital, Changsha 410007, China
| | - S H Tang
- Department of Neonatology, Senior Department of Pediatrics, the Seventh Medical Center of the People's Liberation Army General Hospital (the Second School of Clinical Medicine, Southern Medical University), Beijing 100700, China
| | - T Han
- Department of Neonatology, Senior Department of Pediatrics, the Seventh Medical Center of the People's Liberation Army General Hospital (the Second School of Clinical Medicine, Southern Medical University), Beijing 100700, China
| | - Y B Mei
- Department of Neonatology, Senior Department of Pediatrics, the Seventh Medical Center of the People's Liberation Army General Hospital (the Second School of Clinical Medicine, Southern Medical University), Beijing 100700, China
| | - H Y Liang
- Department of Neonatology, Senior Department of Pediatrics, the Seventh Medical Center of the People's Liberation Army General Hospital (the Second School of Clinical Medicine, Southern Medical University), Beijing 100700, China
| | - S M Wang
- Department of Neonatology, Senior Department of Pediatrics, the Seventh Medical Center of the People's Liberation Army General Hospital (the Second School of Clinical Medicine, Southern Medical University), Beijing 100700, China
| | - F Wang
- Department of Neonatology, Senior Department of Pediatrics, the Seventh Medical Center of the People's Liberation Army General Hospital (the Second School of Clinical Medicine, Southern Medical University), Beijing 100700, China
| | - Q P Li
- Department of Neonatology, Senior Department of Pediatrics, the Seventh Medical Center of the People's Liberation Army General Hospital (the Second School of Clinical Medicine, Southern Medical University), Beijing 100700, China
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Yu S, Zhong ZP, Fang Y, Patel RB, Li QP, Liu W, Li Z, Xu L, Sagona-Stophel S, Mer E, Thomas SE, Meng Y, Li ZP, Yang YZ, Wang ZA, Guo NJ, Zhang WH, Tranmer GK, Dong Y, Wang YT, Tang JS, Li CF, Walmsley IA, Guo GC. A universal programmable Gaussian boson sampler for drug discovery. Nat Comput Sci 2023; 3:839-848. [PMID: 38177757 PMCID: PMC10768638 DOI: 10.1038/s43588-023-00526-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 09/01/2023] [Indexed: 01/06/2024]
Abstract
Gaussian boson sampling (GBS) has the potential to solve complex graph problems, such as clique finding, which is relevant to drug discovery tasks. However, realizing the full benefits of quantum enhancements requires large-scale quantum hardware with universal programmability. Here we have developed a time-bin-encoded GBS photonic quantum processor that is universal, programmable and software-scalable. Our processor features freely adjustable squeezing parameters and can implement arbitrary unitary operations with a programmable interferometer. Leveraging our processor, we successfully executed clique finding on a 32-node graph, achieving approximately twice the success probability compared to classical sampling. As proof of concept, we implemented a versatile quantum drug discovery platform using this GBS processor, enabling molecular docking and RNA-folding prediction tasks. Our work achieves GBS circuitry with its universal and programmable architecture, advancing GBS toward use in real-world applications.
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Affiliation(s)
- Shang Yu
- Research Center for Quantum Sensing, Zhejiang Lab, Hangzhou, People's Republic of China.
- Quantum Optics and Laser Science, Blackett Laboratory, Imperial College London, London, UK.
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China.
- CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China.
| | - Zhi-Peng Zhong
- Research Center for Quantum Sensing, Zhejiang Lab, Hangzhou, People's Republic of China
| | - Yuhua Fang
- College of Pharmacy, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Raj B Patel
- Quantum Optics and Laser Science, Blackett Laboratory, Imperial College London, London, UK.
| | - Qing-Peng Li
- Research Center for Quantum Sensing, Zhejiang Lab, Hangzhou, People's Republic of China
| | - Wei Liu
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China
- CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China
| | - Zhenghao Li
- Quantum Optics and Laser Science, Blackett Laboratory, Imperial College London, London, UK
| | - Liang Xu
- Research Center for Quantum Sensing, Zhejiang Lab, Hangzhou, People's Republic of China
| | - Steven Sagona-Stophel
- Quantum Optics and Laser Science, Blackett Laboratory, Imperial College London, London, UK
| | - Ewan Mer
- Quantum Optics and Laser Science, Blackett Laboratory, Imperial College London, London, UK
| | - Sarah E Thomas
- Quantum Optics and Laser Science, Blackett Laboratory, Imperial College London, London, UK
| | - Yu Meng
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China
- CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China
| | - Zhi-Peng Li
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China
- CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China
| | - Yuan-Ze Yang
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China
- CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China
| | - Zhao-An Wang
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China
- CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China
| | - Nai-Jie Guo
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China
- CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China
| | - Wen-Hao Zhang
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China
- CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China
| | - Geoffrey K Tranmer
- College of Pharmacy, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Ying Dong
- Research Center for Quantum Sensing, Zhejiang Lab, Hangzhou, People's Republic of China
| | - Yi-Tao Wang
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China.
- CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China.
| | - Jian-Shun Tang
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China.
- CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China.
- Hefei National Laboratory, University of Science and Technology of China, Hefei, China.
| | - Chuan-Feng Li
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China.
- CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China.
- Hefei National Laboratory, University of Science and Technology of China, Hefei, China.
| | - Ian A Walmsley
- Quantum Optics and Laser Science, Blackett Laboratory, Imperial College London, London, UK
| | - Guang-Can Guo
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China
- CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China
- Hefei National Laboratory, University of Science and Technology of China, Hefei, China
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Tang SH, Hong XY, Feng ZC, Li QP. [Extracorporeal membrane oxygenation in preterm infants: current status and future perspectives]. Zhonghua Er Ke Za Zhi 2023; 61:82-85. [PMID: 36594128 DOI: 10.3760/cma.j.cn112140-20221021-00892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- S H Tang
- Neonatal Intensive Care Unit, Faculty of Pediatrics, the Seventh Medical Center of People's Liberation Army General Hospital, National Engineering Laboratory for Birth Defects Prevention and Control of Key Technology, Beijing Key Laboratory of Pediatric Organ Failure, Beijing 100700, China
| | - X Y Hong
- Neonatal Intensive Care Unit, Faculty of Pediatrics, the Seventh Medical Center of People's Liberation Army General Hospital, National Engineering Laboratory for Birth Defects Prevention and Control of Key Technology, Beijing Key Laboratory of Pediatric Organ Failure, Beijing 100700, China
| | - Z C Feng
- Neonatal Intensive Care Unit, Faculty of Pediatrics, the Seventh Medical Center of People's Liberation Army General Hospital, National Engineering Laboratory for Birth Defects Prevention and Control of Key Technology, Beijing Key Laboratory of Pediatric Organ Failure, Beijing 100700, China
| | - Q P Li
- Neonatal Intensive Care Unit, Faculty of Pediatrics, the Seventh Medical Center of People's Liberation Army General Hospital, National Engineering Laboratory for Birth Defects Prevention and Control of Key Technology, Beijing Key Laboratory of Pediatric Organ Failure, Beijing 100700, China
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Cao JK, Li QP. [Application and progress of ultrasound monitoring in fluid management of preterm infants]. Zhonghua Er Ke Za Zhi 2021; 59:526-529. [PMID: 34102831 DOI: 10.3760/cma.j.cn112140-20210202-00098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- J K Cao
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou 510515, China
| | - Q P Li
- First Ward of Neonatology, Department of Pediatrics, the Seventh Medical Center of the People's Liberation Army General Hospital, Beijing 100700, China
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Zou Y, Guo JJ, Li QP, Zuo DH, Liu JS, Guo YD, Yan J, Zha L, Cai JF, Lan LM. Genetic Polymorphisms of 21 STR Loci in Hunan Province-based Han Population. Fa Yi Xue Za Zhi 2016; 32:356-362. [PMID: 29205006 DOI: 10.3969/j.issn.1004-5619.2016.05.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Indexed: 11/18/2022]
Abstract
OBJECTIVES To investigate the genetic polymorphisms of 21 short tandem repeat (STR) loci (D3S1358, D13S317, D7S820, D16S539, Penta E, D2S441, TPOX, TH01, D2S1338, CSF1PO, Penta D, D10S1248, D19S433, vWA, D21S11, D18S51, D6S1043, D8S1179, D5S818, D12S391 and FGA). METHODS A total of 560 blood samples were collected from unrelated healthy individuals of Han population in Hunan Province. Chelex-100 extraction method was applied to the extraction of genomic DNA, and an AGCU EX22 Kit and 9700 STR amplification was used in amplification reactions. The products were separated and analyzed on 310 Genetic Analyzer. RESULTS A total of 248 alleles were observed, the allelic frequencies ranging from 0.001 to 0.518. Observation of genotype distributions for each locus showed no deviations from Hardy-Weinberg equilibrium except Penta E (P=0.023). The combined power of discrimination, combined power of exclusion, and combined matching probability of the 21 STR loci were approximately 0.999 999 999 999 999 999 999 999 8, 0.999 999 998, and 1.36×10⁻²⁵, respectively. CONCLUSIONS The 21 STR loci show high polymorphisms in the Han population, which can provide valuable data and a theoretical basis for forensic individual identification and paternity testing.
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Affiliation(s)
- Y Zou
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha 410013, China
| | - J J Guo
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha 410013, China
| | - Q P Li
- Xiangya School of Medicine, Central South University, Changsha 410013, China
| | - D H Zuo
- Xiangya School of Medicine, Central South University, Changsha 410013, China
| | - J S Liu
- Department of Internal Medicine, Affiliated Hospital of Inner Mongolia University for Nationalities, Tongliao 028000, China
| | - Y D Guo
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha 410013, China
| | - J Yan
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha 410013, China
| | - L Zha
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha 410013, China
| | - J F Cai
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha 410013, China
| | - L M Lan
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha 410013, China
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Yang YH, Li QP. [A review: the achievement and challenge of artificial placenta]. Zhonghua Er Ke Za Zhi 2016; 54:550-553. [PMID: 27412752 DOI: 10.3760/cma.j.issn.0578-1310.2016.07.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
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Guo Q, Wang F, He F, Ha YM, Li QP, Jin J, Deng ZX. The impact of technical cashew nut shell liquid on thermally-induced trans isomers in edible oils. J Food Sci Technol 2015; 53:1487-95. [PMID: 27570273 DOI: 10.1007/s13197-015-2147-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 11/27/2015] [Accepted: 12/14/2015] [Indexed: 11/27/2022]
Abstract
The effects of technical cashew nut shell liquid (TCNSL) on the trans isomerization of edible oils during heating are investigated. Edible oils were subjected to thermal treatment at various heating times and temperatures. Our results show that the addition of TCNSL to edible oils at the appropriate concentration during heating suppresses trans fatty acid formation and induces formation of conjugated linoleic acid (CLA) isomers. A concentration of 0.2 % TCNSL demonstrates the best ability to inhibit formation of trans-oleic acid, trans-linoleic acid, and trans-linolenic acid isomers as well as increase the formation of 9 t,11 t-CLA and 10 t,12 t-CLA isomers. Our analysis indicates that the presence of 0.2 % TCNSL in corn oil does not significantly reduce the acid value, but may significantly lower the peroxide value. TCNSL is also observed to have better function compared to Vitamin E (VE) and tertiary butylhydroquinone (TBHQ), indicating that it may be considered an effective additive in edible oils.
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Affiliation(s)
- Qin Guo
- Institute Agro-products Processing Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, 100193 People's Republic of China
| | - Feng Wang
- Institute Agro-products Processing Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, 100193 People's Republic of China
| | - Fan He
- Institute Agro-products Processing Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, 100193 People's Republic of China
| | - Yi-Ming Ha
- Institute Agro-products Processing Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, 100193 People's Republic of China
| | - Qing-Peng Li
- Institute Agro-products Processing Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, 100193 People's Republic of China
| | - Jing Jin
- Institute Agro-products Processing Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, 100193 People's Republic of China
| | - Zhao-Xuan Deng
- Institute Agro-products Processing Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, 100193 People's Republic of China
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Li YF, Jin J, Guo Q, Ha YM, Li QP. Complexation of synthetic CDM-AM copolymer with natamycin and carbendazim to improve solubility and fungicidal activity. Carbohydr Polym 2015; 125:288-300. [PMID: 25857986 DOI: 10.1016/j.carbpol.2015.02.055] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 02/22/2015] [Accepted: 02/23/2015] [Indexed: 11/20/2022]
Abstract
The β-cyclodextrin-acrylamide (CDM-AM) copolymer was prepared from acrylamide and β-CD maleate (CDM) using K2S2O8 as initiator. The effects of the CDM-AM copolymer on the solubility and fungicidal activity of natamycin (NM) and carbendazim (MBC) were investigated. The stability constant of NM·CDM-AM and MBC·CDM-AM complexes at 303 K were of 10,725.45 M(-1) and 3000.89 M(-1), respectively. The complexes were characterized using phase solubility diagrams, NMR spectra and FT-IR spectra. The analysis of the biological activities of these two complexes indicated that they possessed enhancing fungicidal activities compared to NM and MBC alone.
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Affiliation(s)
- Yong-Fu Li
- Institute of Agro-Products Processing Science and Technology, Chinese Academy of Agricultural Sciences, 100193 Beijing, China; Key Opening Laboratory of Agricultural Products Processing and Quality Control, Ministry of Agriculture, 100193 Beijing, China
| | - Jing Jin
- Institute of Agro-Products Processing Science and Technology, Chinese Academy of Agricultural Sciences, 100193 Beijing, China; Key Opening Laboratory of Agricultural Products Processing and Quality Control, Ministry of Agriculture, 100193 Beijing, China
| | - Qin Guo
- Institute of Agro-Products Processing Science and Technology, Chinese Academy of Agricultural Sciences, 100193 Beijing, China; Key Opening Laboratory of Agricultural Products Processing and Quality Control, Ministry of Agriculture, 100193 Beijing, China
| | - Yi-Ming Ha
- Institute of Agro-Products Processing Science and Technology, Chinese Academy of Agricultural Sciences, 100193 Beijing, China; Key Opening Laboratory of Agricultural Products Processing and Quality Control, Ministry of Agriculture, 100193 Beijing, China.
| | - Qing-Peng Li
- Institute of Agro-Products Processing Science and Technology, Chinese Academy of Agricultural Sciences, 100193 Beijing, China; Key Opening Laboratory of Agricultural Products Processing and Quality Control, Ministry of Agriculture, 100193 Beijing, China
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Wu SP, Qin ZZ, Xiao TZ, Li QP, Lu BB, Jing LJ, Wang J, Zhu RL. Cryopreservation of gemmae of Marchantia polymorpha L. (Marchantiophyta, Marchantiaceae) without prior pretreatment. Cryo Letters 2015; 36:91-96. [PMID: 26017297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
BACKGROUND Successful cryopreservation of gametophytic material of bryophytes requires pretreatment with sucrose or abscisic acid. Compared to gametophyte materials, spore and gemmae cryopreservation may be more efficient, simple and stable systems for storing large amounts of genetic diversity of bryophytes within a small space. However, there has still been no attempt at cryopreserving bryophyte gemmae. OBJECTIVE The aim of this study is to determine whether bryophyte gemmae with differing levels of desiccation tolerance could survive and germinate after cryopreservation without prior encapsulation and pretreatment. MATERIALS AND METHODS Gemmae of Marchantia polymorpha L. were dried with silica gel for different times and then rapidly cooled in liquid nitrogen. RESULTS The germination level of fresh gemmae was 95 % After 3 h predrying and 1 d in LN, germination was 68 % and was still up to 59 % after storage for 75 days. CONCLUSION We conclude that the natural desiccation tolerance of bryophyte gemmae permits cryopreservation without prior pretreatment other than drying.
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Affiliation(s)
- S P Wu
- Bryology Laboratory, School of Life Science, East China Normal University, 500 Dongchuan Road, Shanghai China
| | - Z Z Qin
- Bryology Laboratory, School of Life Science, East China Normal University, 500 Dongchuan Road, Shanghai China
| | - T Z Xiao
- Bryology Laboratory, School of Life Science, East China Normal University, 500 Dongchuan Road, Shanghai China
| | - Q P Li
- Bryology Laboratory, School of Life Science, East China Normal University, 500 Dongchuan Road, Shanghai China
| | - B B Lu
- Bryology Laboratory, School of Life Science, East China Normal University, 500 Dongchuan Road, Shanghai China
| | - L J Jing
- Bryology Laboratory, School of Life Science, East China Normal University, 500 Dongchuan Road, Shanghai China
| | - J Wang
- Bryology Laboratory, School of Life Science, East China Normal University, 500 Dongchuan Road, Shanghai China
| | - R L Zhu
- Bryology Laboratory, School of Life Science, East China Normal University, 500 Dongchuan Road, Shanghai China
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Li YF, Ha YM, Guo Q, Li QP. Synthesis of two β-cyclodextrin derivatives containing a vinyl group. Carbohydr Res 2015; 404:55-62. [DOI: 10.1016/j.carres.2014.11.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Revised: 10/28/2014] [Accepted: 11/17/2014] [Indexed: 11/25/2022]
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Dong XL, Xu PF, Miao C, Fu ZY, Li QP, Tang PY, Wang T. Hypoxia decreased chemosensitivity of breast cancer cell line MCF-7 to paclitaxel through cyclin B1. Biomed Pharmacother 2011; 66:70-5. [PMID: 22264882 DOI: 10.1016/j.biopha.2011.11.016] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2011] [Accepted: 11/01/2011] [Indexed: 11/28/2022] Open
Abstract
Hypoxia, frequently found in the center of solid tumors, may lead to enhance the production of key factor in cell survival, invasion, angiogenesis and loss of apoptosis. The low oxygen tension in hypoxic tumors is also known to interfere with the efficacy of chemotherapy, but the underlying mechanisms are not very clear. Paclitaxel (PTX) is an active agent used in breast cancer chemotherapy, which disturbs microtubule dynamics and impairs the transition of cells from metaphase to anaphase in mitosis, leading to cell death by apoptosis. In the present study, we try to determine whether hypoxia can decrease the chemosensitivity of human breast carcinoma cells to PTX and elucidate the underlying mechanism. We found that hypoxia could decrease PTX-induced cell death and G(2)/M arrest. Furthermore, our results showed that hypoxia inhibit PTX-induced soluble tubulin polymerized. In addition, we also found hypoxia could suppress PTX-induced cell cycle protein-cyclin B1 expression in MCF-7 cells. To further investigate whether the inhibitory effect of hypoxia on PTX-induced cell death is mediated by decreasing levels of cyclin B1, cyclin B1-transfected MCF-7 cells were used under hypoxic condition. The data showed that the hypoxia-based decreasing chemosensitivity of breast cancer cells to PTX was reversed by cyclin B1. We also found that overexpression of cyclin B1 could significantly increase the sensitivity of MCF-7 cells to PTX by stimulating soluble polymerized tubulin. Overall, hypoxia decreases cyclin B1, which could in turn reverse hypoxia-induced decreasing chemosensitivity to PTX in breast cancer cell line MCF-7.
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Affiliation(s)
- X L Dong
- Department of Internal Medicine of the Second Affiliated Hospital, Medical School of Xi'an Jiao Tong University, Xi'an, China
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Yuan CG, Li QP, Feng YN, Chang AL. Fractions and leaching characteristics of mercury in coal. Environ Monit Assess 2010; 167:581-586. [PMID: 19603279 DOI: 10.1007/s10661-009-1074-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2009] [Accepted: 06/30/2009] [Indexed: 05/28/2023]
Abstract
A huge amount of coal is always stored in open spaces in coal-fired power plants before combustion. Mercury released from coal by rain or flowing water is an environmental risk and can cause contamination of the soil around the storage area. To better understand mercury pollution and to control mercury emission before combustion, it is necessary to determine the mobility and leaching characteristics of mercury from coal. In this study, we collected ten coal samples from one coal-fired power plant and proposed a sequential extraction procedure to get five fractions of mercury for evaluation. Elemental Hg was found as the most dominant fraction, and sulfate Hg was shown to be the second largest fraction. The mercury in the organic and the soluble fractions were not the major fractions, but they should still be considered because of their high mobility.
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Affiliation(s)
- Chun-Gang Yuan
- School of Environmental Science and Engineering, North China Electric Power University, No. 619 Yonghuabei Street, Baoding, 071003, Hebei, People's Republic of China.
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Zhang DQ, Chen XN, Sun SQ, Li CH, Zhang BL, Li Y, Li SR, Li QP, Zhou HJ. [The quantified analysis of fresh mutton tenderness using PLS methods and Fourier transform near-infrared spectroscopy]. Guang Pu Xue Yu Guang Pu Fen Xi 2008; 28:2550-2553. [PMID: 19271487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Ninety eight representative fresh mutton samples from Neimeng, Ningxia, Gansu, Xinjiang province were selected for this study, the nondestructive measurement of the fresh mutton tenderness by Fourier transform near infrared (FT-NIR) spectroscopy was discussed. Partial least squares(PLS) algorithm was used to build the model between the shear force value of the fresh mutton tenderness measured by the texture machine and the FT-NIR spectra. The influence of different processing method of spectra, factors and wave regions on the determination coefficients (r2), root mean square error of cross validation (RMSECV) and root mean square error of prediction (RMSEP) was studied. The result showed that the shear force value of ninety eight representative fresh mutton samples was 1.673-6.631 kg, and the shear force value above 75% samples was 2-5 kg, almost covering the fresh mutton tenderness of our country's sheep, the r2 of the calibration could reach 86.2% and the RMSECV was up to 0. 445 in the wave number range 11 995-5 446 cm(-1) and 4 601-4 246 cm(-1) with vector normalization when the PLS factors was ten. The correlation coefficient(R), RMSEP and average bias between value measured by the texture machine and predicted value of model based on validation samples were 0.87, 0.524 and 0.385 respectively. The result indicates that FT-NIR spectroscopy is capable of predicting tenderness value of fresh mutton.
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Affiliation(s)
- De-Quan Zhang
- Institute of Agro-Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100094, China.
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Abstract
BACKGROUND Vascular dementia (VD) is a syndrome or diagnosis that has different causes and clinical manifestations relating to several different vascular mechanisms and changes in the brain. Some traditional Chinese herbal medicines were developed for treating VD. DH: Yizhi capsule is one such herbal concoction which is reported to improve clinical symptoms significantly. The efficacy and adverse effects of Yizhi capsule need to be reviewed systematically and assessed critically to inform clinical practice and guide the continued search for new treatment regimens. OBJECTIVES To assess the effectiveness and possible adverse events of 'Yizhi capsule' in treating vascular dementia. SEARCH STRATEGY The Cochrane Dementia and Cognitive Improvement Group's Specialised Register was searched on 18 September 2006 using the terms yi-zhi, "yi zhi" and yizhi. This database contains trial references from major health care databases and ongoing trial database and is up to date. In addition the review authors searched a variety of Chinese databases. SELECTION CRITERIA Randomised, placebo controlled trials in which patients with vascular dementia were treated with 'Yizhi capsule' were included. DATA COLLECTION AND ANALYSIS Two authors independently assessed trial quality and extracted data. We telephoned study authors for missing information as to whether treatment allocation was randomised and other methodological details. MAIN RESULTS No studies were found that met the inclusion criteria. We identified nine references to trials which included the term 'Yizhi capsule' in the description of the interventions. Two study authors were contacted by telephone and we discovered that the allocation methods they had used were not actually randomised. Four references were describing the same study. Three studies were excluded because 'positive drugs' were used as a control. AUTHORS' CONCLUSIONS There is no evidence from randomised controlled trials to support or proscribe against the use of 'Yizhi capsule' as a treatment for vascular dementia.
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Affiliation(s)
- T X Wu
- West China Hospital, Sichuan University, Chinese Cochrane Centre, Chinese EBM Centre, No. 37, Guo Xue Xiang, Chengdu, Sichuan, China, 610041.
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Li QP, Lu ZA, Rao MR. [Depressive effect of tetrandrine on collagen synthesis in vascular smooth muscle cells]. Yao Xue Xue Bao 2001; 36:481-4. [PMID: 12585075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
AIM To clarify whether collagen deposition and collagen synthesis are increased in renovascular hypertensive rats (RHR) and whether these are affected by treatment with tetrandrine (Tet). METHODS Collagen deposition was detected by electron microscope and evaluated by the amount of hydroxyproline in aorta of sham-operated rats (Sham), renovascular hypertensive rats (RHR), and Tet treated RHR. The aortic vascular smooth muscle cells (AVSMCs) were isolated and cultured. The collagen synthesis in cultured AVSMCs was detected by [3H]-proline incorporation. RESULTS The ultrastructure of aorta suggests that AVSMCs in RHR had been transferred from contractile phenotype to synthetic phenotype. Compared with sham-operated rats, the hydroxyproline content in aorta was increased by 36.6% in RHR, while it was reduced by 18.7% in Tet treated RHR (P < 0.01, vs RHR). Tet (0.1-10 mumol.L-1) treatment in vitro induced a concentration dependent depression [3H]-proline incorperation stimulated by NE or Ang II in AVSMCs from either Sham or RHR. CONCLUSION The depressive effects of tetrandrine on collagen synthesis and deposition in arteries may contribute to the regression of vascular remodeling.
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Affiliation(s)
- Q P Li
- Department of Cardiovascular Pharmacology, Nanjing Medical University, Nanjing 210029, China.
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Liang GD, Li L, Zhou GL, Fu SH, Li QP, Li FS, He HH, Jin Q, He Y, Chen BQ, Hou YD. Isolation and complete nucleotide sequence of a Chinese Sindbis-like virus. J Gen Virol 2000; 81:1347-51. [PMID: 10769078 DOI: 10.1099/0022-1317-81-5-1347] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Infection with alphaviruses is common in the Chinese population. Here we report the isolation of a Sindbis-like virus from a pool of Anopheles mosquitoes collected in Xinjiang, China during an arbovirus survey. This virus, designated XJ-160, rapidly produced cytopathic effects on mosquito and hamster cells. In addition, it was lethal to neonatal mice if inoculated intracerebrally. Serologically, XJ-160 reacted with and was neutralized by an anti-Sindbis antibody. Anti-XJ-160 antibodies were found in several cohorts of Chinese subjects. The complete 11626-base nucleotide sequence of XJ-160 was determined. XJ-160 has diverged significantly from the prototype Sindbis virus, with an 18% difference in nucleotide sequence and an 8.6% difference in amino acids; there are 11 deletions and 2 insertions, involving 99 nucleotides in total. XJ-160 is most closely linked to Kyzylagach virus isolated in Azerbaijan. Both belong to the African/European genetic lineage of Sindbis virus, albeit more distantly related to other members.
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Affiliation(s)
- G D Liang
- State Key Laboratory for Molecular Virology and Genetic Engineering, Institute of Virology, Chinese Academy of Preventive Medicine, Beijing, People's Republic of China
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Sun AY, Li DX, Wang YL, Li QP. Restraint stress changes heart sensitivity to arrhythmogenic drugs. Zhongguo Yao Li Xue Bao 1995; 16:455-9. [PMID: 8701768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
AIM To study the effects of acute restraint stress on ventricular electric stability (VES) and its mechanisms of action. METHODS VES was evaluated both in vivo and in vitro by the changes of arrhythmogenic responses to icv or ip aconitine in rats and iv BaCl2 or adrenaline in rabbits following restraint stress for different durations. Pretreatments and the assay of heart-specific enzymes were made. RESULTS The heart sensitivity to these drugs was promoted after stress for 2 h, but obtunded after stress for 8 h (the latency of ventricular arrhythmia to icv aconitine was shortened from 4.1 +/- 0.9 min in control rats to 2.9 +/- 0.9 min after stress for 2 h, P < 0.05; but prolonged to 9.3 +/- 3.8 min after stress for 8 h, P < 0.05). In Langendorff heart, the changes of VES induced by stress were similar to those in vivo, but to lesser degree. Pretreatment with adrenalectomy inhibited the descending phase of VES, while pretreatment with both aminophylline and vagotomy remarkably depressed the ascending phase at 8 h. In addition, the serum activities of lactate dehydrogenase (LDH), creatine kinase (CK), and aspartate aminotransferase and their isozymes, LDH1 and CK-MB, were elevated at 2 h, and rose continuously at 8 h. CONCLUSION Acute restraint stress causes biphasic changes of VES. The initial decrease of VES was related to adrenal catecholamine release, whereas the following increase of VES was ascribed to adaptive decrease of cAMP and vagal activation. The changes of VES did not always parallel the injury of heart.
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Affiliation(s)
- A Y Sun
- Department of Pharmacology, Nanjing Medical University, China
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Li QP, Xie XC. Erratum: Transport of one-dimensional interacting fermions through a barrier. Phys Rev B Condens Matter 1994; 50:5021. [PMID: 9976839 DOI: 10.1103/physrevb.50.5021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Li QP, Joynt R. Metal-insulator transition and magnetic ordering in Hubbard models near the Nagaoka limit. Phys Rev B Condens Matter 1994; 49:1632-1641. [PMID: 10010952 DOI: 10.1103/physrevb.49.1632] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Li QP, Koltenbah BE, Joynt R. Mixed s-wave and d-wave superconductivity in high-Tc systems. Phys Rev B Condens Matter 1993; 48:437-455. [PMID: 10006795 DOI: 10.1103/physrevb.48.437] [Citation(s) in RCA: 75] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Li QP, Joynt R. Mott-Hubbard metal-insulator transition in Hubbard models at high total spin. Phys Rev B Condens Matter 1993; 47:3979-3982. [PMID: 10006511 DOI: 10.1103/physrevb.47.3979] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Li QP, Joynt R. Nuclear relaxation in the superconducting state of YBa2Cu3O7: Evidence for an s+id state. Phys Rev B Condens Matter 1993; 47:530-533. [PMID: 10004480 DOI: 10.1103/physrevb.47.530] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Li QP, Liu TP. Frequency-dependent depression of Vmax in K(+)-depolarized guinea pig papillary muscle by tetrandrine. Zhongguo Yao Li Xue Bao 1992; 13:407-11. [PMID: 1300041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The effect of tetrandrine (Tet), a calcium antagonist, on the maximal upstroke velocity (Vmax) of depolarization in K(+)-depolarized guinea pig papillary muscles was studied by standard microelectrode method with computer. The results showed that: (1) the resting block of Tet on Vmax was concentration dependent; (2) the drug (50 or 100 mumol.L-1) caused a marked frequency-dependent block of Vmax, which accounted for 65 +/- 8% of total block at a concentration of 100 mumol.L-1 and the pacing frequency of 0.3 Hz; (3) the recovery kinetics of Vmax could be characterized as a biexponential function, of which the second phase was prolonged by the drug; (4) compared with verapamil, nitrendipine, and diltiazem, the above-mentioned effects of Tet on Vmax were similar to those of diltiazem. These results suggest that Tet can block calcium channel in both frequency-dependent and frequency-independent manner, mainly the former.
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Affiliation(s)
- Q P Li
- Department of Pharmacology, Nanjing Medical College, China
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Li QP, Joynt R. Elementary excitations in one-dimensional quantum wires: Exact equivalence between the random-phase approximation and the Tomonaga-Luttinger model. Phys Rev B Condens Matter 1992; 45:13713-13716. [PMID: 10001467 DOI: 10.1103/physrevb.45.13713] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Li QP. Elementary excitation spectrum of one-dimensional electron systems in confined semiconductor structures: Finite magnetic field. Phys Rev B Condens Matter 1991; 44:6277-6283. [PMID: 9998492 DOI: 10.1103/physrevb.44.6277] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Li QP. Elementary excitation spectrum of one-dimensional electron systems in confined semiconductor structures: Zero magnetic field. Phys Rev B Condens Matter 1991; 43:11768-11786. [PMID: 9996949 DOI: 10.1103/physrevb.43.11768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Li QP, Karraï K, Yip SK, Drew HD. Electrodynamic response of a harmonic atom in an external magnetic field. Phys Rev B Condens Matter 1991; 43:5151-5154. [PMID: 9997896 DOI: 10.1103/physrevb.43.5151] [Citation(s) in RCA: 54] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Xie XC, Li QP. Density of states and thermodynamic properties of a two-dimensional electron gas in a strong external magnetic field. Phys Rev B Condens Matter 1990; 42:7132-7147. [PMID: 9994840 DOI: 10.1103/physrevb.42.7132] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Zhang WC, Li HZ, Li QP. [Study and use of the spinal column scale]. Zhonghua Wai Ke Za Zhi 1985; 23:213-4, 253. [PMID: 4017769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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