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Tibetan Pottery:An Art of Fire and Earth

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China's Tibet 2024年第3期35卷 24-28页

作者： Yuan haixia(Text/Photos) Zheng Lu(Text/Photos) Gongqiu Qucuo(Text/Photos) Li Nan(Translated) 不详

Tibetan handmade pottery craftsmanship has a long history and unique *** is an important part of traditional Tibetan *** plays a key role in people’s daily lives and is popular among people in the Xizang Autonomous R... 详细信息

关键词： Tibetan characteristics. Earth

饲喂压片玉米和鲜苜蓿对荷斯坦奶牛生产性能和经济效益的影响

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四川畜牧兽医 2018年第7期45卷 22-24页

作者：宋良荣焦浩鹏龙海霞何翠蔡勇毛江新希望生态牧业有限公司四川新津611400

本试验旨在研究用压片玉米和云南本地鲜紫花苜蓿分别替换精料中的粉碎玉米和美国进口苜蓿干草对云南地区奶牛生产性能和经济效益的影响。结果显示:替换后可以显著降低泌乳牛每千克奶的饲料成本(P0.05)。

关键词：荷斯坦奶牛压片玉米苜蓿草生产性能

造血干细胞S100A8特异性敲除鼠表型分析及对红系前体细胞发育的影响

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免疫学杂志 2020年第2期36卷 102-108页

作者：曾冬曾祥华苏星星黄佳妮胡春燕周丽雷敏龙海霞朱波陆军军医大学新桥医院全军肿瘤研究所

目的通过构建造血干细胞S100A8基因特异性敲除鼠,对其表型进行初步研究,并分析其对红系前体细胞发育的影响。方法利用CRISPR/Cas9基因编辑技术构建造血干细胞S100A8基因特异性敲除鼠;观察分析子代鼠大小便、毛发、体质量、性别比例及细... 详细信息

目的通过构建造血干细胞S100A8基因特异性敲除鼠,对其表型进行初步研究,并分析其对红系前体细胞发育的影响。方法利用CRISPR/Cas9基因编辑技术构建造血干细胞S100A8基因特异性敲除鼠;观察分析子代鼠大小便、毛发、体质量、性别比例及细胞形态等生长发育情况;构建荷瘤和贫血模型,分析红系前体细胞变化发育情况。结果成功构建了造血干细胞S100A8基因敲除鼠,该鼠可生长发育繁殖,小鼠偶会现脱毛现象,8周龄前体质量低于野生型鼠;荷瘤及贫血模型中,红系前体细胞比例变化趋势相似;白细胞及其亚群数量未见明显统计学差异。结论首次成功构建了造血干细胞S100A8基因敲除鼠,为研究其功能提供了新的模型;该基因特异性敲除会影响小鼠早期表型,但不会对红系前体细胞发育产生影响。

关键词：敲除表型红系前体细胞

听障儿童的肢体情绪加工特征:来自眼动的证据

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中国特殊教育 2024年第2期 22-29页

作者：龙细连孟迎芳陈顺森陈海霞黄琼华漳州卫生职业学院漳州363000 福建师范大学心理学院福州350117 福建省应用认知与人格重点实验室漳州363000 漳州市阳光学校漳州363000 福建省龙溪师范学校附属小学漳州363000

为了研究听障儿童对肢体情绪的加工是否存在缺陷,选取听障儿童和性别、年级相匹配的普通儿童各17名,让其观看愉快、平静和愤怒肢体情绪图片并对情绪效价进行判断,采用眼动追踪技术采集两组儿童观看肢体情绪的视觉指标。结果发现:(1)听... 详细信息

为了研究听障儿童对肢体情绪的加工是否存在缺陷,选取听障儿童和性别、年级相匹配的普通儿童各17名,让其观看愉快、平静和愤怒肢体情绪图片并对情绪效价进行判断,采用眼动追踪技术采集两组儿童观看肢体情绪的视觉指标。结果发现:(1)听障儿童对愉快肢体的反应时短于普通儿童,对平静肢体的正确率低于普通儿童;(2)听障儿童对肢体情绪所有眼动指标注视量均显著少于普通儿童;(3)听障儿童和普通儿童相同,对肢体情绪的加工深度从深到浅依次为上肢、头部和下肢。说明听障儿童对肢体情绪的加工模式与普通儿童相同,但加工深度不如普通儿童,存在一定的缺陷,情绪能力提升训练应加强深度加工训练。

关键词：听障儿童肢体情绪眼动

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流式细胞技术在抗生素抑菌实验中的应用

实验室研究与探索 2024年第4期43卷 14-17页

作者：蒋海霞许杰上海交通大学生命科学技术学院上海200240

针对抗生素类药物抑菌实验检测中存在的缺少量化指标、无法准确评估细菌自身生长状态以及实验周期较长等问题,探究不同质量浓度(0.02~20 mg/mL)和不同处理时间(1和2 h)下申嗪霉素对黄单胞菌的抑菌检测中流式细胞技术的应用。结果表明,... 详细信息

针对抗生素类药物抑菌实验检测中存在的缺少量化指标、无法准确评估细菌自身生长状态以及实验周期较长等问题,探究不同质量浓度(0.02~20 mg/mL)和不同处理时间(1和2 h)下申嗪霉素对黄单胞菌的抑菌检测中流式细胞技术的应用。结果表明,相同处理时间下,申嗪霉素质量浓度越高,凋亡晚期的坏死细胞越多;相同质量浓度下,随着申嗪霉素处理时间的增加,死亡细胞的比例明显增加。流式细胞技术能够在抗生素等药物抑菌实验中快速、准确地检测细菌的生长状态和活力,为抗生素等药物抑菌机理研究中的检测技术提供数据支持,也有助于拓展流式细胞技术在细菌凋亡研究领域的应用。

关键词：流式细胞技术抑菌检测申嗪霉素黄单胞菌细菌凋亡

Generalized system function analysis of resonant behavior of electromagnetic open systems

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Science in China(Series F) 2005年第5期48卷 615-631页

作者： LI long LIU haixia SHI Yan LIANG Changhong National Laboratory of Antennas and Microwave Technology Xidian University Xi'an 710071 China Institute of Signal and Data Processing Xidian University Xi'an 710071 China

Abstract The generalized system function, H（s）, directly associated with the radiated or scattered fields is presented to effectively analyze the special resonant behavior of electromagnetic open systems in this paper, which is adaptively constructed by using the model-based parameter estimation （MBPE） technique in the complex frequency domain. By analyzing the characteristics of complex zeros, poles and residues of H（s） in a finite operational frequency band, we can effectively determine resonant frequencies and resonant intensity of electromagnetic open systems. It is known that an analysis of Q-factor of antenna and scattering systems has been an interesting and challenging problem. Based on H（s） and the complex frequency w theories, a complex frequency method for Q-factor of electromagnetic open systems is presented in this paper. Some examples of the practical antenna arrays are given to illustrate the applications and validity of the generalized system function theory proposed by this paper.

关键词： Keywords: generalized system function H(s) electromagnetic open resonance complex frequency qualityfactor Q model-based parameter estimation (MBPE)

Tuning Order-Disorder Phase Transition through Regulating the Substituent Group of Anion

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Chinese Journal of Chemistry 2017年第6期35卷 957-963页

作者： Dong Li Lihong Chen haixia Zhao Lasheng long Lansun Zheng State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry College of Chemistry and Chemieal Engineering Xiamen University Xiamen Fujian 361005 China

The structural phase transition compound {[（CH3）2CHCH2]2NH2}·[CF3COO] （1） has been synthesized based on the diisobutylamine and trifluoroacetic acid. The DSC data reveal that 1 undergoes a phase transition at 277 K （Tc）. When one chlorine atom replaces one fluorine atom on trifluoroacetate anion, three order-disorder phase transitions at 251 K （Ti）, 282 K （T2） and 290 K could be achieved owing to a stepwise release of rotation motions of the anion and cation in {[（CH3）2CHCH2]2NH2}·[CF2C[COO] （2）. Based on the variable temperature crystal structures, the phase transition in compound 1 is triggered by the rotation of three fluorine atoms on the trifluoroacetate anion synchronized with the motions of the methyl groups on the diisobutylammonium cation. However, in compound 2, the phase transitions can be realized by a sequence of motions of both the anion and cation. Besides, the dielectric- temperature dependences were investigated in order to prove this regulation process. All of this investigation will be beneficial to design and synthesis of the novel phase transition materials and molecular dielectric materials on pur- pose.

关键词： phase transition dielectric materials order-disorder phase transition structural phase transition

A Compact Ultra-Wideband Circularly Polarized Antenna Array for Vehicular Communications

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China Communications 2023年第6期20卷 310-320页

作者： Wei He Yejun He long Zhang Jun Hong haixia Cui Amir Boag School of Electrical and Information Engineering Hunan Institute of TechnologyHengyang 421002China College of Electronics and Information Engineering Shenzhen UniversityShenzhen 518060China School of Physics and Telecommunication Engineering South China Normal UniversityGuangzhou 510630China School of Electrical Engineering Tel Aviv UniversityTel Aviv 69978Israel

In this paper,a new compact ultrawideband(UWB)circularly polarized(CP)antenna array for vehicular communications is *** antenna array consists of a 2×2 sequentially rotated T-shaped cross dipole,four parasitic elements,and a feeding *** loading the T-shaped cross dipoles with parasitic rectangular elements with cut corners,the bandwidth can be *** this basis,the radiation pattern can be improved by the topology with sequential rotation of four T-shaped cross-dipole antennas,and the axial ratio(AR)bandwidth of the antenna also can be further *** addition,due to the special topology that the vertical arms of all Tshaped cross dipoles are all oriented toward the center of the antenna array,the gain of proposed antenna is improved while the size of the antenna is almost the same as the traditional cross *** and measured results show that the proposed antenna has good CP characteristics,an impedance bandwidth for S11<-10 d B of about 106.1%(3.26:1,1.57-5.12 GHz)and the 3-d B AR bandwidth of about 104.1%(3.17:1,1.57-4.98 GHz),a wide 3-d B gain bandwidth of 73.3%as well as the peak gain of 8.6 d Bic at 3.5 *** overall size of antenna is 0.56λ×0.56λ×0.12λ(λrefers to the wavelength of the lowest operating frequency in free space).The good performance of this compact UWB CP antenna array is promising for applications in vehicular communications.

关键词： circularly polarized antenna vehicle satellite communications cross-dipole antenna ultrawideband(UWB)antenna

Systolic B-1 Circuit in Galois Fields Based on a Quaternary Logic Technique

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Journal of Beijing Institute of Technology 2020年第2期29卷 177-183页

作者： haixia Wu Yilong Bai Tian Wang Xiaoran Li long He School of Information and Electronics Beijing Institute of TechnologyBeijing 100081China

In order to improve the circuit complexity and reduce the long latency of B-1 operations,a novel B-1 operation in Galois Field GF(24)is presented and the corresponding systolic realization based on multiple-valued logic(MVL)is *** systolic structure employs multiplevalued current mode(MVCM)by using dynamic source-coupled logic(SCL)to reduce the initial delay and the transistor and wire *** performance is evaluated by HSPICE simulation in 0.18μm CMOS technology and a comparison is conducted between our proposed implementation and those reported in the *** initial delay and the sum of transistors and wires in our MVL design are about 43%and 13%lower,respectively,in comparison with other corresponding binary CMOS *** systolic architecture proposed is simple,regular,and modular,well suited for very large scale integration(VLSI)*** combination of MVCM circuits and relevant algorithms based on MVL seems to be a potential solution for high performance arithmetic operations in GF(2k).

关键词： multiple-valued logic(MVL) systolic B^-1 circuit Galois Fields