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Cucciniello N, Mazza AR, Roy P, Kunwar S, Zhang D, Feng HY, Arsky K, Chen A, Jia Q. Anisotropic Properties of Epitaxial Ferroelectric Lead-Free 0.5[Ba(Ti 0.8Zr 0.2)O 3]-0.5(Ba 0.7Ca 0.3)TiO 3 Films. Materials (Basel) 2023; 16:6671. [PMID: 37895653 PMCID: PMC10608784 DOI: 10.3390/ma16206671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 10/06/2023] [Accepted: 10/11/2023] [Indexed: 10/29/2023]
Abstract
As the energy demand is expected to double over the next 30 years, there has been a major initiative towards advancing the technology of both energy harvesting and storage for renewable energy. In this work, we explore a subset class of dielectrics for energy storage since ferroelectrics offer a unique combination of characteristics needed for energy storage devices. We investigate ferroelectric lead-free 0.5[Ba(Ti0.8Zr0.2)O3]-0.5(Ba0.7Ca0.3)TiO3 epitaxial thin films with different crystallographic orientations grown by pulsed laser deposition. We focus our attention on the influence of the crystallographic orientation on the microstructure, ferroelectric, and dielectric properties. Our results indicate an enhancement of the polarization and strong anisotropy in the dielectric response for the (001)-oriented film. The enhanced ferroelectric, energy storage, and dielectric properties of the (001)-oriented film is explained by the coexistence of orthorhombic-tetragonal phase, where the disordered local structure is in its free energy minimum.
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Affiliation(s)
- Nicholas Cucciniello
- Department of Materials Design & Innovation, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA or (N.C.); (H.Y.F.)
- Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory, Los Alamos, NM 87545, USA; (A.R.M.); (P.R.); (S.K.); (D.Z.)
| | - Alessandro R. Mazza
- Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory, Los Alamos, NM 87545, USA; (A.R.M.); (P.R.); (S.K.); (D.Z.)
| | - Pinku Roy
- Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory, Los Alamos, NM 87545, USA; (A.R.M.); (P.R.); (S.K.); (D.Z.)
| | - Sundar Kunwar
- Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory, Los Alamos, NM 87545, USA; (A.R.M.); (P.R.); (S.K.); (D.Z.)
| | - Di Zhang
- Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory, Los Alamos, NM 87545, USA; (A.R.M.); (P.R.); (S.K.); (D.Z.)
| | - Henry Y. Feng
- Department of Materials Design & Innovation, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA or (N.C.); (H.Y.F.)
| | - Katrina Arsky
- Department of Materials Science & Engineering, University of Illinois Urbana, Urbana, IL 61801, USA
| | - Aiping Chen
- Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory, Los Alamos, NM 87545, USA; (A.R.M.); (P.R.); (S.K.); (D.Z.)
| | - Quanxi Jia
- Department of Materials Design & Innovation, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA or (N.C.); (H.Y.F.)
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Zhou FJ, Wu HZ, Li JW, Feng HY, Huang SS, Chen L, Liao QH, Wen WP. [Epidemiological characteristics of pulmonary tuberculosis in Guangdong province from 2016 to 2020]. Zhonghua Liu Xing Bing Xue Za Zhi 2022; 43:1568-1574. [PMID: 36456488 DOI: 10.3760/cma.j.cn112338-20220121-00059] [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: 06/17/2023]
Abstract
Objective: To analyze the epidemiological characteristics of pulmonary tuberculosis (TB) in Guangdong province from 2016 to 2020 and provide evidence for the prevention and control of pulmonary TB. Methods: Descriptive epidemiological methods were used to analyze the incidence data of pulmonary TB reported in Guangdong from 2016 to 2020. Dynamic geometric series averaging and circular distribution methods were used to reveal the epidemic pattern. Results: A total of 356 748 pulmonary TB cases were reported in Guangdong from 2016 to 2020. The reported incidence of pulmonary TB decreased from 71.82/100 000 to 50.40/100 000 (trend χ2=6 905.57,P<0.001) , with an annual decline rate of 8.47%. Results from the circular distribution methods showed that the incidence peak would occur on May 4th-5th (Z=1 176.96,P<0.05), and the incidence was relatively higher in May compared with other months. The area distribution of the pulmonary TB epidemic was uneven, and the reported average annual incidence was in the order of the eastern area (72.15/100 000), the northern area (68.14/100 000), the western area (65.31/100 000) and the Pearl River Delta area (60.05/100 000). Results of dynamic geometric series averaging analysis showed a declining trend in the reported incidence of pulmonary TB in all areas, except Dongguan, with the average growth rate less than 0.00. The decline rate in the eastern area (-10.90%) and northern area (-10.63%) was higher than the provincial average (-8.47%). The male to female ratio of the cases was 2.63∶1 (258 562∶98 186). The reported average annual pulmonary TB incidence in men (88.37/100 000) was higher than that in women (36.86/100 000), the difference was significant (χ2=75.19, P<0.001). The reported incidence of pulmonary TB generally increased with age (trendχ2=123 849.44, P<0.001), and reached peak in age group ≥65 years (164.54/100 000). Dynamic geometric series averaging analysis showed an increasing trend of the reported pulmonary TB incidence in age groups 5-14 years and 15-24 years, with the average growth rate of 0.05% and 3.60%. Conclusions: The reported annual incidence of pulmonary TB showed a declining trend year by year in Guangdong from 2016 to 2020. However, an increasing incidence was reported in children and adolescents. Active case finding should be strengthened in the elderly and other key populations. With comprehensive TB prevention and control measures, it is still necessary to pay attention to the prevention and control of pulmonary TB in men, low-income groups and less developed areas in Guangdong and strengthen the comprehensive prevention and control in winter and spring.
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Affiliation(s)
- F J Zhou
- Department of Control and Treatment, Guangdong Provincial Center for Tuberculosis Control, Guangzhou 510630, China
| | - H Z Wu
- Department of Control and Treatment, Guangdong Provincial Center for Tuberculosis Control, Guangzhou 510630, China
| | - J W Li
- Department of Control and Treatment, Guangdong Provincial Center for Tuberculosis Control, Guangzhou 510630, China
| | - H Y Feng
- Department of Control and Treatment, Guangdong Provincial Center for Tuberculosis Control, Guangzhou 510630, China
| | - S S Huang
- Department of Control and Treatment, Guangdong Provincial Center for Tuberculosis Control, Guangzhou 510630, China
| | - L Chen
- Department of Control and Treatment, Guangdong Provincial Center for Tuberculosis Control, Guangzhou 510630, China
| | - Q H Liao
- Department of Control and Treatment, Guangdong Provincial Center for Tuberculosis Control, Guangzhou 510630, China
| | - W P Wen
- Department of Control and Treatment, Guangdong Provincial Center for Tuberculosis Control, Guangzhou 510630, China
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Cucciniello N, Lee D, Feng HY, Yang Z, Zeng H, Patibandla N, Zhu M, Jia Q. Superconducting niobium nitride: a perspective from processing, microstructure, and superconducting property for single photon detectors. J Phys Condens Matter 2022; 34:374003. [PMID: 35779516 DOI: 10.1088/1361-648x/ac7dd6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Accepted: 07/01/2022] [Indexed: 06/15/2023]
Abstract
Superconducting niobium nitride (NbN) continues to be investigated decades on, largely in part to its advantageous superconducting properties and wide use in superconducting electronics. Particularly, NbN-based superconducting nanowire single-photon detectors (SNSPDs) have shown exceptional performance and NbN remains as the material of choice in developing future generation quantum devices. In this perspective, we describe the processing-structure-property relationships governing the superconducting properties of NbN films. We further discuss the complex interplay between the material properties, processing parameters, substrate materials, device architectures, and performance of SNSPDs. We also highlight the latest progress in optimizing SNSPD performance parameters.
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Affiliation(s)
- Nicholas Cucciniello
- Department of Materials Design and Innovation, University at Buffalo-The State University of New York, Buffalo, NY 14260, United States of America
| | - Derek Lee
- Department of Materials Design and Innovation, University at Buffalo-The State University of New York, Buffalo, NY 14260, United States of America
| | - Henry Y Feng
- Department of Materials Design and Innovation, University at Buffalo-The State University of New York, Buffalo, NY 14260, United States of America
| | - Zihao Yang
- Applied Materials, Inc., Santa Clara, CA 95054, United States of America
| | - Hao Zeng
- Department of Physics, University at Buffalo-The State University of New York, Buffalo, NY 14260, United States of America
| | - Nag Patibandla
- Applied Materials, Inc., Santa Clara, CA 95054, United States of America
| | - Mingwei Zhu
- Applied Materials, Inc., Santa Clara, CA 95054, United States of America
| | - Quanxi Jia
- Department of Materials Design and Innovation, University at Buffalo-The State University of New York, Buffalo, NY 14260, United States of America
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Lin ZZ, Ran H, Chen P, Deng J, Huang ZD, Ou CY, Qiu L, Feng HY, Liao SJ, Liu WB. [Characteristics of electromyography in 111 patients with generalized myasthenia gravis: a retrospective study]. Zhonghua Yi Xue Za Zhi 2019; 99:2522-2526. [PMID: 31484280 DOI: 10.3760/cma.j.issn.0376-2491.2019.32.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To retrospectively analyze the characteristics of the electromyography (EMG) study in generalized myasthenia gravis (gMG) patients. Methods: A total of 111 gMG patients were enrolled. Patients were divided into two groups: 36 severe patients discontinuing pyridostigmine bromide (PB) for 8 hours were included in 8 h group, and 75 g MG patients discontinuing PB for at least 18 hours were included in>18 h group. The clinical information and EMG study data were collected and analyzed. Results: There were statistically significant differences in the initial location of the myasthenia muscle (P=0.027), the affected muscle detected by the EMG (P=0.015) and quantitative myasthenia gravis (QMG) score (P<0.01) between the two groups. Comparisons in each group revealed that the highest positive rate of low-frequency repetitive nerve stimulation (RNS) of facial in 8 h group and>18 h group was 94.4% and 60.0%, respectively. Comparisons between the two groups showed that the positive rate of low-frequency RNS in 8 h group was significantly higher than that in>18 h group (94.4% vs 70.7%, χ(2)=8.115, P=0.004). In particular, the positive rate of RNS in facial nerves and the extent of the amplitude decrease under different electrical stimulations (1 Hz, 3 Hz, and 5 Hz) were dramatically higher in the 8 h group (P<0.01). Conclusions: For gMG patients, the facial and accessory nerve detection can improve the positive rate of RNS. Different muscles had various sensitivity to PB, and orbicularis oculi muscle seemed the least sensitive muscle to PB. For suspect MG patients in severe condition, only discontinuing PB medication for 8 h before low-frequency RNS testing can avoid the deterioration and also obtain similar positive rate.
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Affiliation(s)
- Z Z Lin
- Department of Neurology, National Key Clinical Department and Key Discipline of Neurology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - H Ran
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - P Chen
- Department of Neurology, National Key Clinical Department and Key Discipline of Neurology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - J Deng
- Department of Neurology, National Key Clinical Department and Key Discipline of Neurology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - Z D Huang
- Department of Neurology, National Key Clinical Department and Key Discipline of Neurology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - C Y Ou
- Department of Neurology, National Key Clinical Department and Key Discipline of Neurology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - L Qiu
- Department of Neurology, National Key Clinical Department and Key Discipline of Neurology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - H Y Feng
- Department of Neurology, National Key Clinical Department and Key Discipline of Neurology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - S J Liao
- Department of Neurology, National Key Clinical Department and Key Discipline of Neurology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - W B Liu
- Department of Neurology, National Key Clinical Department and Key Discipline of Neurology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
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Ying ZT, Feng HY, Mi L, Song YQ, Wang XP, Zheng W, Lin NJ, Tu MF, Xie Y, Ping LY, Zhang C, Liu WP, Deng LJ, Zhu J. [Clinical characteristics and survival analysis of de novo grade 3 or transformed follicular lymphoma patients]. Zhonghua Xue Ye Xue Za Zhi 2018; 39:745-750. [PMID: 30369186 PMCID: PMC7342259 DOI: 10.3760/cma.j.issn.0253-2727.2018.09.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Indexed: 11/27/2022]
Abstract
Objective: To evaluate the clinical characteristics and survival outcomes of patients with de novo grade 3 or transformed follicular lymphoma (FL). Methods: Fifty-two patients treated at Peking University Cancer Hospital between January 2009 and September 2017 were assessed, including 28 patients with FL 3A grade, 13 patients with FL 3B grade, 11 patients with transformed FL. Baseline characteristics, survival and prognostic factors were analyzed. Results: ① Twenty-six male and 26 female patients were enrolled, including 28 patients with FL 3A grade, 13 patients with FL 3B grade, 11 patients with transformed FL. ②The 3-year progression-free survival (PFS) and overall survival (OS) for the entire cohort were 56.0% and 80.6%, respectively. Patients with international prognostic index (IPI) score 0-1 demonstrated significantly better 3-year PFS (80.3% vs 20.1%; t=18.902, P<0.001) and OS (95.7% vs 57.0%; t=10.406, P<0.001) than patients with IPI score 2-3. Three-year PFS (94.1% vs 37.2% vs 25.2%; P=0.002) and OS (100.0% vs 76.0% vs 59.8%; P=0.020) were also significantly different among patients with FLIPI 1 score 0-1, 2, ≥3. FLIPI 2 score was also identified as a prognostic factor for 3-year PFS (68.4%, 0, 0; P=0.001) and OS(87.5%, 76.2%, 0; P=0.003). ③Multivariate analysis indicated a significant association of PFS (HR=3.536, P=0.015) and OS (HR=15.713, P=0.015) with IPI. FLIPI 2 was associated with OS (score 0-1, HR=0.078, P=0.007; score 2, HR=0.080, P=0.022). Conclusion: De novo grade 3 or transformed FL might be a group of curable disease with current treatment strategies. IPI is still a prognostic tool in this scenario.
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Affiliation(s)
- Z T Ying
- Department of Lymphoma, Key laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital & Institute, Beijing 100142, China
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Huang Q, Wang YG, Shu YQ, Yang H, Wang ZH, Yan ZW, Long YM, Yin J, Feng HY, Li CX, Lu ZZ, Hu XQ, Qiu W. [Efficacy and safety of mycophenolate mofetil in treating neuromyelitis optica spectrum disorder: a multicenter, prospective, self-control study in Guangzhou City]. Zhonghua Yi Xue Za Zhi 2018; 98:1664-1668. [PMID: 29925143 DOI: 10.3760/cma.j.issn.0376-2491.2018.21.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Objective: To evaluate the efficacy and safety of mycophenolate mofetil (MMF) in neuromyelitis optica spectrum disorder (NMOSD). Method: From September 2014 to February 2017, NMOSD patients with seropositive aquaporin4-IgG was enrolled through a multicenter, prospective study, and the annual recurrence rate (ARR), Expanded Disability Status Scale (EDSS) and MMF-related side effects before and after MMF treatment were compared. Results: Ninety patients were enrolled in the study. After being treated for a median of 12 months (1-30 months), the median ARR decreased from 1.1 pre-MMF to 0 post-MMF (P<0.001), and the median EDSS score decreased from 4.0 pre-MMF to 3.0 post-MMF (P<0.001). The EDSS score reduced significantly after 90 days' treatment (P<0.05). The main adverse events included the deranged liver enzymes (19%, 17/90), respiratory infection (11%, 10/90), urinary tract infection (6%, 5/90), varicella-zoster infection (6%, 5/90), anemia (6%, 5/90), leucopenia (6%, 5/90), diarrhea (2%, 2/90), hair loss (1%, 1/90); 11% (10/90) patients experienced severe adverse events, and 6% (5/90) patients discontinued MMF. Conclusions: MMF could significantly reduce the ARR and EDSS score of NMOSD. However, awareness on side effects should be raised.
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Affiliation(s)
- Q Huang
- Department of Neurology, the Third Affiliated Hospital of SUN Yat-sen University, Guangzhou 510630, China
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Affiliation(s)
- T W An
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
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Wu LF, Li H, Song DJ, Feng HY, Yu ZL. [Establishment of a method for GUS gene transferring into wheat (Triticum astivum L.) embryos by low energy ion beam implantation]. Yi Chuan Xue Bao 2001; 27:982-91. [PMID: 11209692] [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: 02/19/2023]
Abstract
Physical parameters influencing transformation of wheat mediated by low energy ion beam, including type of ion, parameters of ion energy, dose and dose rate, were studied. Ar+ was regarded as suitable ions implanted in transformation. 20-25 keV of energy, 4.68 x 10(16) ions/cm2 of dose, 2.6 x 10(15) ions/cm2 of dose rate were chosen as appropriate implantation parameters. The suitable culture conditions for induction and growth of callus and the optimal selection scheme were established, After implantation and selection, resistant calli and hygromycin-resistant plantlets were obtained from three varieties. Molecular analysis data proved that GUS gene had integrated into the wheat genome. The mature embryo transformation efficiency of wherat variety Yangmai 5, Yangmai 158, Wanmai 32 reached 9.5%, 10.8%, 11.2% measured in produced hygromycin-resistant callus and 1.4%, 3.4%, 1.7% measured in regenerated plants, respectively, This experiment provides a basis for further investigation of wheat transformation system. Low energy ion beam mediated transformation can be extended to other plant recalcitrant to Agrobacterium tumefaciens as soon as methodological parameters are optimized.
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Affiliation(s)
- L F Wu
- Ion Beam Bioengineering Lab, Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
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