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量子级联技术研究进展:从光源到探测

遥测遥控 2024年第3期45卷 1-23页

作者：杨超李泰澎黄宝玉李愽乐张盛楠黄彦王兆刚史青尹玉刚彭泳卿李晓干北京遥测技术研究所北京100076 大连理工大学集成电路学院大连116024

量子级联技术基于多量子阱或超晶格结构中的子带跃迁和共振隧穿理论,既可以产生光源,又可以探测光信号,是量子级联激光器(QCL)和量子级联探测器(QCD)的理论基石,在检测、遥感、通信、雷达等领域具有广泛的应用前景。经过最近三十年的研... 详细信息

量子级联技术基于多量子阱或超晶格结构中的子带跃迁和共振隧穿理论,既可以产生光源,又可以探测光信号,是量子级联激光器(QCL)和量子级联探测器(QCD)的理论基石,在检测、遥感、通信、雷达等领域具有广泛的应用前景。经过最近三十年的研究,量子级联技术在基础研究、产品性能以及应用系统研发和场景试验方面都取得了重大进展。本文首先简要介绍了量子级联技术的原理和发展历史,随后阐述了量子级联器件子带能级结构和电子输运动力学计算思路,接着重点综述了量子级联技术的研究进展,包括中远红外高功率QCL、中远红外宽调谐QCL、太赫兹QCL、高性能QCD,以及QCL和QCD的单芯片光子集成方面的内容,最后介绍了QCL和QCD的产品与应用情况。

关键词：量子级联激光器探测器集成进展

KNOWLEDGE CREATION USING CLASS ALGEBRA

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KNOWLEDGE CREATION USING CLASS ALGEBRA

Process optimization,texture and microstructure of novel kelp tofu

2003 International Conference on Natural Language Processing and Knowledge Engineering

作者： Daniel j.Buehrer li-Ren Chien National Chung Cheng University Institute of Computer Science and Information Engineering MinHsiung Chiayi 621 Taiwan China

＜正＞This paper presents an overview of knowledge creation in a ternary Boolean algebra of classes and binary *** knowledge creation process involves both the induction and deduction processes to create the most "interesting" IS-A hierarchy of *** IS-A hierarchy will contain "interesting" class containments from which rules may be proposed and *** rules are proposed by looking at the "extent",or the set of instances of the class,and noticing that all objects in a class "unexpectedly" satisfy some *** this predicate does not follow from normalizing the other predicates in the "intent" of the class,then a rule can be proposed that all members of this class satisfy the predicate.A theorem prover may then attempt to prove the predicate from previous rules and the other predicates in the *** deeper the proof tree,the more interesting is the rule.

关键词： Class Algebra concept learning fuzzy Boolean lattice classification containment interestingness semantic web

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Food Science and Human Wellness 2023年第1期12卷 111-118页

作者： xianjiang Ye li Chen Zhichen Su xiaojuan lin jicheng Chen College of Food Science Fujian Agriculture and Forestry UniversityFuzhou 350002China

Laminaria japonica Aresch as an edible and medicine dual-purpose marine algae,has been gradually accepted by *** was Chinese traditional food,combining kelp function ingredients with tofu has practical *** extraction-optimization methodology and the sequences of kelp antihypertensive peptide(KAP)were *** sensory,whiteness,water retention ability(WRA)and microstructure of KAP tofu were *** scanning electron microscope(SEM)results showed KAP addition(20%)significantly improved the tofu texture,with a denser network composed of relatively even *** with gypsum tofu and glucose-δ-interior fat(GDL)tofu,KAP tofu had significantly higher WRA(94.49±0.49)%and sensory evaluation score value(92.54±0.52),and a significantly lower IC_(50) value at(2.06±0.04)mg/mL(Pximum IC_(50) value(4.14 mg/mL)of kelp enzymatic hydrolysate was observed at enzyme(at an alkaline protease:trypsin ratio of 2:1)concentration 1.5%,temperature 55℃ and time 2 *** sequences of 8 identified peptides were Lys-Tyr,Phe-Tyr,Gly-Lys-Tyr,Ala-Lys-Tyr,Ser-Lys-Thr-Tyr,Lys-Lys-Phe-Tyr,Lys-Phe-Lys-Tyr and Ala-Lys-Tyr-Ser-Tyr with IC_(50) values of 5.24,4.83,7.94,7.52,20.63,15.33,10.73 and 2.42μmol/L,*** results indicated the potential use of KAP tofu as a valuable resource for development of functional foods.

关键词： Laminaria japonica Aresch Enzymatic hydrolysis Antihypertensive peptide Kelp tofu

Catalytical hydrogenation of imines: the active catalyst,hydrogenation mechanism,and enantioselectivity

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Catalytical hydrogenation of imines: the active catalyst,hyd...

Performance-enhanced and cost-effective triboelectric nanogenerator based on stretchable electrode for wearable SpO2 monitoring

中国化学会第十二届全国量子化学会议

作者： H.j.Fan L.li State Key Lab of Molecular Reaction Dynamics Dalian Institute of Chemical Physics

Heterocyclic compounds are engaged into many biological processes,and are also widely used in producing medicine,dyes,insecticide and herbicide *** hydrogenation,especially those using hydrogen gas as resources,is one of the key reactions for the synthesis and application of heterocyclic *** catalytic hydrogenation of the heterocyclic aromatic compounds have attracted great interest in recent *** progress have been made on the experimental field,while the mechanistic study is still *** recent yeas we have system studied the mechanism of two hydrogenation system:Ru catalyzed hydrogenation of quinoxalines[1]and Pd catalyzed hydrogenation of imines[2,3].We propose a Ru monomer compound for the active catalyst of the Ru system,and a Pd-H compound coordinated by the assymetric ligand for the active catalyst of the Pd *** both reactions,we found that H2 was split heterolytically by transition metal and a lewis base ligand（or substrate）,while the hydrogenation reaction undergo stepwise,ionic,and out-sphere *** mechanisms and inner-sphere mechanisms were found to be much higher in *** is crucial for the reactivity,and high polar solvent is *** experimental observed assymetric properties have been reproduced by the theoretical studies,and enantioselectivities were found to be strongly depending on the ligand and the *** propose that the N-H...N hydrogen bond in the transition state are the key factor for the *** hydrogenation systems requires additional strong acid,we found that acid involves the reaction *** the Ru system we found that the strong acid can catalyze part of the hydrogenation reaction,while for the Pd system the strong acid involves in both H2 activation and hydrogenation.

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Nano Research 2022年第3期15卷 2465-2471页

作者： Huamin Chen Wei Yang Cheng Zhang Mingqiang Wu Wenjie li Yuxiao Zou Longfeng Lv Hualiang Yu Huizhen Ke Ruping liu Yun xu jun Wang Zhou li Fujian Key Laboratory of Functional Marine Sensing Materials Center for Advanced Marine Materials and Smart SensorsMinjiang UniversityFuzhou 350108China CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 100083China Institute of Semiconductors Chinese Academy of SciencesBeijing 100083China Beijing Key Laboratory of Inorganic Stretchable and Flexible Information Technology Beijing 100083China Beijing Institute of Graphic Communication Beijing 102600China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049China Fujian Key Laboratory of Novel Functional Textile Fibers and Materials Minjiang UniversityFuzhou 350108China

Recently,stretchable and wearable health monitoring equipment has greatly improved human’s daily life,which sets higher demands for portable power source in stretchability,sustainability,and *** this work,we proposed a stretchable triboelectric nanogenerator(TENG)based on stretchable poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)(PEDOT:PSS)/porous carbon hybrid for oxyhemoglobin saturation(SpO2)*** combine advantages of carbon material for its high conductivity and organic electrode for its high stretchability,we spin-coated a solution of PEDOT:PSS/porous carbon onto a plasma-treated pre-stretched Ecoflex film to fabricate a stretchable electrode with rough *** to its roughness and high potential difference with the dielectric material,the stretchable-electrode-based TENG exhibited better performance compared to the pristine TENG based on carbon or PEDOT:PSS *** output voltage and current reached up to 51.5 V and 13.2μA as the carbon concentration *** importantly,the performance further increased under large strain(100%)which is suitable for wearable ***,the device demonstrated its application potential for powering a flexible blood oxygen *** simple and cost-effective method can enhance the stretchability and stability of organic/inorganic electrode-based TENG,which paves the development of high-performance stretchable TENG.

关键词： triboelectric nanogenerator stretchable porous carbon blood oxygen poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)(PEDOT:PSS) wearable electronic

The Arabidopsis Homolog of the Mammalian OS-9 Protein Plays a Key Role in the Endoplasmic Reticulum-Associated Degradation of Misfolded Receptor-like Kinases

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Molecular Plant 2012年第4期5卷 929-940页

作者： Wei Su Yidan liu Yang xia Zhi Honga jianming li Department of Molecular Cellular and Developmental Biology University of Michigan 830 N University Ann Arbor MI 48109-1048 USA Present address: State Key Laboratory of Genetic Engineering and Institute of Plant Biology School of Life Sciences Fudan University Shanghai 200433 China Present address: State Key Laboratory of Pharmaceutical Biotechnology School of Life Sciences Nanjing University Nanjing 210093 China

The endoplasmic reticulum-associated degradation （ERAD） is a highly conserved mechanism to remove mis- folded membrane/secretory proteins from the endoplasmic reticulum （ER）. While many of the individual components of the ERAD machinery are well characterized in yeast and mammals, our knowledge of a plant ERAD process is rather limited. Here, we report a functional study of an Arabidopsis homolog （AtOS9） of an ER luminal lectin Yos9 （OS-9 in mammals） that recognizes a unique asparagine-linked glycan on misfolded proteins. We discovered that AtOS9 is an ER-Iocalized glyco- protein that is co-expressed with many known/predicted ER chaperones. AT-DNA insertional atos9-t mutation blocks the degradation of a structurally imperfect yet biochemically competent brassinosteroid （BR） receptor bril-9, causing its increased accumulation in the ER and its consequent leakage to the cell surface responsible for restoring the BR sensitivity and suppressing the dwarfism of the bril-9 mutant. In addition, we identified a missense mutation in AtOS9 in a recently discovered ERAD mutant ems-rnutagenized bril suppressor 6 （ebs6-1）. Moreover, we showed that atos9-t also inhibits the ERAD of bril-5, another ER-retained BR receptor, and a misfolded EFR, a BRIl-like receptor for the bacterial translation elongation factor EF-Tu. Furthermore, we found that AtOS9 interacted biochemically and genetically with EBS5, an Arabidopsis homolog of the yeast Hrd3/mammalian SellL known to collaborate with Yos9/OS-9 to select ERAD clients. Taken together, our results demonstrated a functional role of AtOS9 in a plant ERAD process that degrades misfolded receptor-like kinases.

关键词： brassinosteroid receptor ER quality control EMS-mutagenized bril-9 suppressor, lectin N-glycan MRHdomain.

电磁制动对FTSC结晶器内流场和钢渣界面的控制

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钢铁 2024年第8期59卷 70-82页

作者：史敬培尚晓娴李学凯张彩军朱立光华北理工大学冶金与能源学院河北唐山063000 河北省高品质钢连铸工程技术研究中心河北唐山063000 华北理工大学轻工学院河北唐山063000 河北科技工程职业技术大学资源与环境工程系河北邢台054000 河北科技大学材料科学与工程学院河北石家庄050000

针对高拉速时薄板坯连铸结晶器内流场及钢渣界面不稳定问题,以某钢厂FTSC(flexible thin slab caster)结晶器和多模式电磁制动MM-EMBr(multi-module electromagnetic braking)系统为研究对象,采用LES+VOF模型对不同电磁感应强度条件下... 详细信息

针对高拉速时薄板坯连铸结晶器内流场及钢渣界面不稳定问题,以某钢厂FTSC(flexible thin slab caster)结晶器和多模式电磁制动MM-EMBr(multi-module electromagnetic braking)系统为研究对象,采用LES+VOF模型对不同电磁感应强度条件下的结晶器流场进行多物理场耦合计算,重点研究在水口浸入深度为190 mm、拉速为6 m/min条件下不同磁感应强度对结晶器内流场和钢-渣界面的影响。研究结果表明,无电磁制动时,结晶器内流场随着冲击深度的增加由最初的双环流逐渐转变成单环流模式,钢渣界面不稳定,起伏波动大,最大速度值超过0.65 m/s,最大波高值超过40 mm,出现卷渣甚至“渣眼”现象,部分上返流钢液的湍动能转化为势能,使钢-渣界面位置逐渐上升,液渣层减薄;开启多模式电磁制动系统后,当水口正下方位置C处磁感应强度不低于0.09 T时,可以有效控制主射流的速度和角度,使窄面冲击点在一定范围内上下波动,从而控制结晶器内流场;随着磁感应强度的增加,结晶器内湍动能总值逐渐减小,当AB、C、DE的磁感应强度增加到0.17、0.15、0.12 T时,能将钢渣界面的最大速度值控制在0.30 m/s以内,最大波高值控制在10 mm以内,钢渣界面位置平均高度控制在-2~2 mm,钢渣界面的湍动能控制在0.045 j/kg以内,此时电磁制动效果最理想,结晶器内流场和钢渣界面的稳定性最好;继续增大磁感应强度时,结晶器内和钢渣界面的湍动能反而增加,这说明磁感应强度并不是越大越好,需要各模块协同配合才能达到最佳制动效果。

关键词：电磁制动薄板坯结晶器钢渣界面卷渣湍动能

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Demonstration and operation of quantum harmonic oscillators in an AlGaAs–GaAs heterostructure

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Frontiers of physics 2023年第1期18卷 63-69页

作者： Guangqiang Mei Pengfei Suo li Mao Min Feng limin Cao School of Physics and Technology Center for Nanoscience and Nanotechnologyand Key Laboratory of Artificial Micro-and Nano-structures of Ministry of EducationWuhan UniversityWuhan 430072China

The quantum harmonic oscillator(QHO),one of the most important and ubiquitous model systems in quantum mechanics,features equally spaced energy levels or *** we present a new class of nearly ideal QHOs formed by hydrogenic substitutional dopants in an AlGaAs/GaAs *** the basis of model calculations,we demonstrate that,when aδ-doping Si donor substitutes the Ga/Al lattice site close to AlGaAs/GaAs heterointerface,a hydrogenic Si QHO,characterized by a restoring Coulomb force producing square law harmonic potential,is *** gives rise to QHO states with energy spacing of~8–9 *** experimentally confirm this proposal by utilizing gate tuning and measuring QHO states using an aluminum single-electron transistor(SET).A sharp and fast oscillation with period of~7–8 mV appears in addition to the regular Coulomb blockade(CB)oscillation with much larger period,for positive gate biases above 0.5 *** observation of fast oscillation and its behavior is quantitatively consistent with our theoretical result,manifesting the harmonic motion of electrons from the *** results might establish a general principle to design,construct and manipulate QHOs in semiconductor heterostructures,opening future possibilities for their quantum applications.

关键词： quantum harmonic oscillator AlGaAs/GaAs semiconductor heterostructure single-electron transistor gate tuning

3D Bioprinted Skin Substitutes for Accelerated Wound Healing and Reduced Scar

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journal of Bionic Engineering 2021年第4期18卷 900-914页

作者： Qin lian Tian jiao Tingze Zhao Huichao Wang Siming Yang Dichen li State Key Laboratory for Manufacturing System Engineering Xi’an Jiaotong UniversityXi’an710049China Chinese PLA General Hospital Beijing100853China

The shortage of skin for grafting continues to be a major problem in the treatment of serious skin injuries.3D bioprinting provides a new way to solve this ***,current 3D printed skin is less effective in treatment of large wounds because of severe shrinkage and *** this study,bionically designed bilayer skin was fabricated using an extrusion-based bioprinter and a gelatin/sodium alginate/gelatin methacrylate hydrogel with excellent physical and biological ***-thickness skin wounds were created in the back of nude mice and treated with bioprinted skin or *** skin accelerated wound healing,reduced wound contraction and scarring,and facilitated wound skin epithelialization compared with the bioprinted hydrogel or untreated *** skin from the wound was collected 28 days after grafting for histology and immunofluorescence *** thickness of the dermis and epidermis of the bioprinted skin was similar to that of nude *** formation in the dermis and dense keratinocytes in the epidermis of the bioprinted skin were *** study provides a potential treatment strategy for reducing skin contraction and scar in large skin wounds.

关键词： 3D bioprinting bionic design skin substitutes wound healing reducing scar