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Multiple Nanoparticles Coupling Strategy for Enhancing Optical Filter Performance of Spectral Splitter Used in Photovoltaic/Thermal System

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Journal of Thermal Science 2024年第1期33卷 368-382页

作者： LIANG Huaxu HUANG Xin wang fuqiang CHENG Ziming DONG Yan School of Energy Science and Engineering Harbin Institute of TechnologyHarbin 150001China School of New Energy Harbin Institute of Technology at WeihaiWeihai 264209China School of Materials Science and Engineering Nanyang Technological UniversitySingapore 639798Singapore

Selective absorptive nanofluid can pre-absorb certain sunlight wavelength that cannot be used by PV and transmits remaining sunlight to the surface of PV,which can decouple PV from the thermal receiver *** order to improve the harvesting of electricity and high-temperature thermal nanofluid,it is important to design an optimal optical filter window(transmit sunlight with wavelengths of 732-1067 nm to the surface of the photovoltaic cell and absorb the remaining sunlight).However,designing optimal optical filter is facing following challenges:(1) inherently narrow selective absorptivity property of single nanoparticle;(2) simplified numerical calculation method calculating transmittance;(3) ignoring the shape of the *** this study,the idea of using multiple nanoparticles coupling effect to design an optical filter is proposed,which can superimpose the narrow absorption bandwidth of different nanoparticles to obtain a wide absorption bandwidth of the whole *** addition,an improved transmission method considering light-matter interaction at air/vessel and liquid/vessel interfaces is adopted to compute the *** results calculated by improved transmission method are more accurate than widely used traditional Lambert-Beer law,which is verified by experimental ***,the effect of nanoparticle shape on spectral transmittance is also investigated,which shows that spiny Ag can approximately extend absorbance from 400 nm to 600 nm compared to nanosphere ***,the results show that optical filter efficiency of nanofluids with multiple nanoparticles coupling(Ag,spiny Ag,ZnO,ITO) can reached up to 35%.

关键词： solar energy PV/T nanofluid optimal optical filter radiative transfer spectral splitting

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Performance of the Multilayer Film for Infrared Stealth based on VO_(2) Thermochromism

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Journal of Thermal Science 2024年第4期33卷 1312-1324页

作者： LI Yaru wang fuqiang ZHANG Aoyu FU Zhichang SU Ronghua GAO Tengfei wang Zhen GUO Jicheng ORDOS Institute of Technology Ordos017000China School of Energy Science and Engineering Harbin Institute of TechnologyHarbin150001China School of New Energy Harbin Institute of Technology at WeihaiWeihai264209China Defense Engineering Institute AMSPLABeijing100850China

With the development of detection and identification technology,infrared stealth is of great value to realize anti-reconnaissance detection of military *** present,infrared stealth materials generally have deficiency,such as complex structure,inconvenient radiation regulation and cumbersome preparation steps,which greatly limit the practical application of infrared stealth *** view of the above deficiency of infrared stealth materials,we proposed a kind of multilayer film for infrared stealth using VO2thermochromism based on the temperature response mechanism of tuna to adjust its color,and through the intelligent reversible radiation regulation mechanism to meet the infrared stealth requirements of tanks in different actual *** results show that when the temperature increases from 300 K to 373 K,the peak emissivity of the film decreases from 94%to 20%in the 8-14μm band after structural optimization,which can realize the infrared stealth of the high temperature target in the 8-14μm *** average emissivity of the multilayer film for infrared stealth at3-5μm and 8-14μm band can be reduced to 34%and 27%at 373 K,and the peak emissivity at 5-8μm band can reach 65%,realizing dual-band infrared stealth in the 3-5μm and 8-14μm bands and heat dissipation in the 5-8μm *** multilayer film for infrared stealth based on VO2thermochromism designed by the authors can meet the characteristics of simple film structure,convenient radiation regulation and simple preparation.

关键词： vanadium dioxide multilayer film infrared stealth thermal management

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Enzymatic self-assembly/disassembly turns “ON”/“OFF” the mimetic hydrolytic activity of histidine nanofibers

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Science China Chemistry 2024年第2期67卷 517-522页

作者： Xianbao Sun Manli wang Xiaoyang Liu Wenjun Zhan Guangqiong Xu Qiaochu Jiang Hai-Dong Xu fuqiang wang Gaolin Liang State Key Laboratory of Digital Medical Engineering School of Biological Science and Medical EngineeringSoutheast UniversityNanjing210096China Analysis Center Nanjing Medical UniversityNanjing210029China

Mimetic enzymes are devised as alternates or supplements of natural enzymes in broad fields but regulating their activities in a switchable manner remains ***,we proposed an enzymatic self-assembly/disassembly strategy to address this issue.A peptide molecule Nap FFEYIH(YH) was rationally designed which,after self-assembling into nanofibers,lined up the histidine moieties to form active hydrolysis centers for mimicking hydrolase *** dephosphorylation of Nap FFEYp IH(Yp H) by alkaline phosphatase to yield YH also turned “ON” the hydrolase *** turn,phosphorylation of YH by phosphokinase epidermal growth factor receptor to yield Yp H disassembled the nanofibers and thus turned the activity “OFF”.As such,the “ON”/“OFF” of the mimetic hydrolase activities could be regulated under physiological conditions through ALP/EGFR-mediated self-assembly/disassembly of histidine *** work provides a feasible strategy for the on-demand fabrication of artificial enzymes with controllable and superior activities.

关键词： disassembly hydrolytic activity mimetic enzyme phosphorylation self-assembly

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A double-layer radiative cooling coating that utilizes the refractive index difference between layers to achieve extremely high solar reflectivity

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Science China Technological Sciences 2024年第10期67卷 3182-3189页

作者： wang fuqiang LI ChunZhe YANG ZhenNing XIE WeiXin LI Xiang XU ZengHui YAN YuYing CHENG ZiMing School of Energy Science and Engineering Harbin Institute of Technology School of New Energy Harbin Institute of Technology at Weihai China Construction Eco-Environmental Protection Technology Co. Ltd. Faculty of Engineering University of Nottingham

Passive daytime radiative cooling（PDRC） technology has great potential in reducing cooling energy consumption. In order to further improve the spectral performance of PDRC coatings, current researchers mostly focus on the selection and size design of functional particles, while ignoring the optical properties enhancement effect caused by the interlayer binder. In this study, based on the principle that the refractive index difference between layers enhanced the backscattering performance of the solar spectrum, we proposed and manufactured a double-layer PDRC coating with polyvinylidene difluoride（PVDF） as the filmforming material in the upper layer and polydimethylsiloxane（PDMS） as the film-forming material in the lower layer, both filled with Al2O3and SiO2particles. The double-layer PDRC coating exhibited excellent spectral performance that a high solar reflectivity of 98% and an emissivity of 0.95 at the “atmospheric window” band. In comparison, the solar spectrum reflectivity of the single-layer PDRC coatings based on PVDF and PDMS of the same thickness was 95% and 94.7%, respectively. Outdoor tests showed that the PDRC coating achieved a temperature decrease of up to 7.1℃ under direct sunlight at noon time. In addition, the PDRC coating had excellent weather resistance, water resistance, and other basic properties. This article opens up a new idea and provides methodological guidance for the design of double-layer PDRC coatings.

关键词： double-layer radiative cooling coating spectral modulation interlayer refractive index solar energy radiative transfer

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Symmetry Breaking in the Strong Interaction – The Chiral Magnetic Effect

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原子核物理评论 2024年第1期41卷 1-10页

作者： wang fuqiang School of Science Huzhou UniversityHuzhou 313000ZhejiangChina

The chiral magnetic effect (CME) refers to a charge separation along a strong magnetic field due to an imbalanced chirality of quarks from interactions with the vacuum topological gluon field. This chiral anomaly is a fundamental property of quantum chromodynamics (QCD) and, therefore, an observation of the CME would have far-reaching impact on our understanding of QCD and Nature. The measurements of the CME-sensitive azimuthal correlator Δγ observable in heavy-ion collisions are contaminated by a major background induced by elliptic flow anisotropy. Several novel approaches have been carried out, including a dedicated isobar collision program, to address this flow-induced background. Further background effects, arising from nonflow correlations, have been studied. While the isobar data are consistent with zero CME signal with an upper limit of 10% of the measured Δγ, the Au+Au midcentral data suggest a positive CME signal on the order of 10% of the measured Δγ with a significance of ~2 standard deviations. Future increased statistics and improved detector capability should yield a firm conclusion on the existence (or the lack) of the CME in relativistic heavy-ion collisions.

关键词： chiral magnetic effect charge separation Δγcorrelator flow-induced background nonflow

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多电平级联H桥逆变器通用型离散模型及分岔与混沌行为特性分析

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电力自动化设备 2024年第8期44卷 145-152页

作者：杨维满王富强李锦键王兴贵张钰沛兰州理工大学电气工程与信息工程学院甘肃兰州730050 甘肃省新能源电力变换及控制工程研究中心甘肃兰州730050

多电平级联H桥逆变器内部功率器件多、等效开关频率高、开关组合状态繁杂、离散数学模型建立难度大,其分岔、混沌动力学行为难以进行系统性分析。基于虚拟遍历法建立了具有N个单元的多电平级联H桥逆变器通用型离散映射数学模型;引入对... 详细信息

多电平级联H桥逆变器内部功率器件多、等效开关频率高、开关组合状态繁杂、离散数学模型建立难度大,其分岔、混沌动力学行为难以进行系统性分析。基于虚拟遍历法建立了具有N个单元的多电平级联H桥逆变器通用型离散映射数学模型;引入对交流变量跟踪性能更佳的准比例谐振控制器,并重点分析了比例增益、谐振增益、单元数量N变化以及主电路和控制电路中其他参数变化情况下的分岔、混沌行为特性;对比分析了引入混沌抑制前后系统稳定性变化情况。从方法论角度分别采用根轨迹图和折叠图验证了稳定性分析结果的正确性,并通过PSIM仿真和实验验证了相关结论的正确性和抑制分岔与混沌行为的有效性。

关键词：准比例谐振级联H桥逆变器分岔混沌混沌抑制

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先天性心脏病患儿患坏死性小肠结肠炎的危险因素研究进展

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中华小儿外科杂志 2024年第10期45卷 943-947页

作者：王富强潘登杨敏王献良河南省儿童医院新生儿外科郑州

坏死性小肠结肠炎(necrotizing enterocolitis, NEC)是一种累及小肠和结肠的急性出血坏死性炎性疾病, 严重时可引起肠穿孔和腹膜炎, 是新生儿主要的肠道急症之一, 其病因和危险因素尚未完全清楚。患有先天性心脏病(congenital heart dis... 详细信息

坏死性小肠结肠炎(necrotizing enterocolitis, NEC)是一种累及小肠和结肠的急性出血坏死性炎性疾病, 严重时可引起肠穿孔和腹膜炎, 是新生儿主要的肠道急症之一, 其病因和危险因素尚未完全清楚。患有先天性心脏病(congenital heart disease, CHD)的婴儿患NEC的风险增加, 有较高的发病率及死亡率。本文通过综述NEC在患儿自身特点、原发疾病的种类、严重程度及围手术期的治疗、喂养方式、喂养时机、喂养量等方面的危险因素, 总结CHD婴儿患NEC的风险, 讨论未来可能的预防措施, 以减少CHD患儿发生NEC的概率。

关键词：小肠结肠炎, 坏死性先天性心脏病危险因素

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掘进后配套用自动跟随式电缆拖拽装置开发

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煤矿机械 2024年第9期45卷 109-111页

作者：王富强中国煤炭科工集团太原研究院有限公司太原030006

随着煤矿井下巷道掘进技术的飞速发展,巷道掘进速度越来越快,巷道进尺越来越高,掘进后配套的桥式转载机与带式输送机的搭接长度越来越长,最长搭接长度可达25 m,过长的搭接长度造成掘进机后方作业人员需要频繁地拖拽电缆,不仅劳动强度大... 详细信息

随着煤矿井下巷道掘进技术的飞速发展,巷道掘进速度越来越快,巷道进尺越来越高,掘进后配套的桥式转载机与带式输送机的搭接长度越来越长,最长搭接长度可达25 m,过长的搭接长度造成掘进机后方作业人员需要频繁地拖拽电缆,不仅劳动强度大,还存在较多的安全隐患,也影响了掘进效率。为此,创新提出一种可实现自动跟随的电缆拖拽装置,有效省去了人工拖拽电缆的工作量,提高了掘进效率。

关键词：带式输送机自动跟随电缆拖拽掘进效率煤矿

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中国传统边疆文化中的“和合”思想及当代价值

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特区经济 2024年第3期 152-156页

作者：王富强中国人民警察大学河北廊坊065000

“和合”思想在中华民族传统文化中占据着重要地位,作为中华民族传统文化的一部分,身具多种特性的边疆文化也一直将“和合”思想作为自身文化基石。随着“人类命运共同体”、铸牢“中华民族共同体意识”的提出,面对机遇和挑战并存的局面... 详细信息

“和合”思想在中华民族传统文化中占据着重要地位,作为中华民族传统文化的一部分,身具多种特性的边疆文化也一直将“和合”思想作为自身文化基石。随着“人类命运共同体”、铸牢“中华民族共同体意识”的提出,面对机遇和挑战并存的局面,中国需要一种普遍熟知更为宏大的思想进行审视和分析,而“和合”思想就具备这一特质。因此,研究和弘扬边疆文化中的“和合”思想对于当代中国的发展有着重要的价值意义。

关键词：边疆文化 “和合”思想探析

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儿童肾母细胞瘤相关的易感综合征筛查与相应的肾母细胞瘤治疗进展

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中华小儿外科杂志 2024年第2期45卷 164-169页

作者：孙中文王富强徐青雨王慧智池成涛马志牡丹江医学院牡丹江157011 河南宏力医院心胸外科新乡453499 牡丹江医学院附属红旗医院小儿外科牡丹江157011 牡丹江医学院附属红旗医院妇产科牡丹江157011

肾母细胞瘤是儿童最常见的恶性肿瘤之一,约占儿童肿瘤的7%。其中10%~17%的肾母细胞瘤与肿瘤易感综合征(cancer predisposition syndrome,CPS)有关,此类肾母细胞瘤发病更早,恶性度及双侧发病率更高。目前非易感型综合征的肾母细胞瘤的治... 详细信息

肾母细胞瘤是儿童最常见的恶性肿瘤之一,约占儿童肿瘤的7%。其中10%~17%的肾母细胞瘤与肿瘤易感综合征(cancer predisposition syndrome,CPS)有关,此类肾母细胞瘤发病更早,恶性度及双侧发病率更高。目前非易感型综合征的肾母细胞瘤的治疗生存率可达90%以上,治疗方案包括手术及联合放化疗,而易感型综合征肾母细胞瘤治愈成功率较低,为了保留肾单位、改善预后,其治疗也各不相同。与肾母细胞瘤相关的CPS有WAGR综合征、Denys-Drash综合征和Beckwith-Wiedemann综合征等。目前国内医师缺少对肾母细胞瘤相关的易感综合征预防及诊断的认识,本文通过回顾相关文献,对肾母细胞瘤相关的易感综合征的筛查和相应的肾母细胞瘤治疗方法进行综述。

关键词：肾母细胞瘤综合征筛查治疗

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