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Research on desorption and regeneration of simulated decarbonization solution in the process of CO_2 capture using ammonia method

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Science China(Technological Sciences) 2012年第12期55卷 3411-3418页

作者： MA shuangchen WANG MengXuan HAN TingTing CHEN WeiZhong LU DongLi CHEN GongDa School of Environment North China Electric Power UniversityBaoding 071003China

Study on desorption and regeneration of simulated decarbonization solution using ammonia method for CO2 capture was car- fled out in order to understand the feature of regeneration of decarbonization solution. The mechanisms about solution desorp- tion after decarbonization were introduced briefly. Under the atmospheric pressure and in the presence of nitrogen carrier gas, several effects related to desorption of simulated decarbonization solution were analyzed, such as temperature, solution con- centration, pH, loading capacity, etc. The results showed that the CO2 desorption percentage increased with the increases of temperature, solution concentration and loading capacity, but CO2 desorption percentage increased with the increasing of pH and then decreased.

关键词： ammonia method ammonium bicarbonate solution C02 desorption experimental research

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腐殖酸生物降解地膜提高番茄品质的转录代谢机制研究

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园艺学报 2024年第8期51卷 1758-1772页

作者：韩荧段颖牛一杰李衍素贺超兴孙敏涛王君李强陈双臣闫妍河南科技大学园艺与植物保护学院河南洛阳471000 中国农业科学院蔬菜花卉研究所北京100081 华中农业大学工学院和园艺林学学院武汉430070

腐殖酸生物降解地膜是一种新型生物降解地膜,因其覆盖栽培番茄能显著改良土壤环境,提高果实品质而受到广泛关注。为探明其对番茄果实品质和营养成分的影响及其调控机制,以设施番茄‘甜脆脆’为试验材料,对PBAT/PLA普通生物降解膜(PT)和... 详细信息

腐殖酸生物降解地膜是一种新型生物降解地膜,因其覆盖栽培番茄能显著改良土壤环境,提高果实品质而受到广泛关注。为探明其对番茄果实品质和营养成分的影响及其调控机制,以设施番茄‘甜脆脆’为试验材料,对PBAT/PLA普通生物降解膜(PT)和添加腐殖酸的生物降解膜(FZS)处理下的番茄成熟果实进行风味感官评价,并测定可溶性糖、番茄红素等营养物质含量,利用PCA、正交偏最小二乘法、KEGG等分析方法对成熟果实转录组和GC/LC–MS非靶向代谢组进行联合分析。结果表明:与PT处理成熟果实相比,FZS处理果实薄壁细胞数显著减少28.10%,表皮层和角质层厚度分别减少24.28%和43.99%,促进了果实的成熟,并提高了可溶性糖和糖酸比,降低了酸度和硬度,促进了果实的成熟,改善了品质。转录组分析共鉴定出500个差异表达基因,主要富集于碳水化合物代谢、糖酵解和细胞壁结构等途径。代谢组分析共鉴定出143个差异含量代谢物,主要富集于丁酸代谢、赖氨酸降解和ABC转运蛋白等途径。转录—代谢组联合分析发现FZS对番茄果实风味品质的影响受到碳水化合物/能量代谢以及氨基酸和激素转运等途径的正向调控,其中葡萄糖–6–磷酸、果糖–6–磷酸和半乳糖参与的碳水化合物代谢通路是主要的调控途径。

关键词：番茄腐殖酸生物可降解地膜转录—代谢组联合分析

Radiation-pressure-induced photoluminescence enhancement of all-inorganic perovskite CsPbBr3 quantum dots

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Photonics Research 2019年第8期7卷 837-846页

作者： YING ZHANG HAIOU ZHU TAIWU HUANG ZONGPENG SONG shuangchen RUAN Center for Advanced Material Diagnostic Technology College of Engineering PhysicsShenzhen Technology UniversityShenzhen518118China Guangdong Provincial Key Laboratory of Mico/Nano Optomechatronics Engineering College of Optoelectronic EngineeringShenzhen UniversityShenzhen518060China College of New Materials and New Energies Shenzhen University of TechnologyShenzhen518118China

Perovskite quantum dots(QDs) are of great interest due to their outstanding optoelectronic properties and tremendous application potential. Improving photoluminescence(PL) spectra in all-inorganic perovskite QDs is of great importance for performance enhancement. In this work, the PL quantum yield of the CsPbBr3 perovskite QDs is enhanced from 70% to 95% with increasing radiation pressure. Such enhancement is attributed to the increased binding energy of self-trapped excitons(STEs) upon radiation pressure, which is consistent with its blue-shifted PL and other characterization results. Furthermore, we study ultrafast absorption spectroscopy and find that the dynamics of relaxation from free excitons to STEs in radiation pressure CsPbBr3 QDs is ascribed to stronger electron–phonon coupling in the contracted octahedral structure. It is further demonstrated that radiation pressure can boost the PL efficiency and explore effectively the relationship between the structure and optical properties.

关键词： PL QDs Radiation-pressure-induced photoluminescence enhancement

Generation of single solitons tunable from 3 to3.8μm in cascaded Er^(3+)-doped and Dy^(3+)-doped fluoride fiber amplifiers

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Photonics Research 2022年第9期10卷 2140-2146页

作者： LINPENG YU JINHUI LIANG SHITING HUANG JINZHANG WANG JIACHEN WANG XING LUO PEIGUANG YAN FANLONG DONG XING LIU QITAO LUE CHUNYU GUO shuangchen RUAN Shenzhen Key Laboratory of Laser Engineering Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics EngineeringKey Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceCollege of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China Key Laboratory of Advanced Optical Precision Manufacturing Technology of Guangdong Higher Education Institutes Shenzhen Technology UniversityShenzhen 518118China Han’s Laser Technology Industry Group Co. Ltd.Shenzhen 518057China

High-power tunable femtosecond mid-infrared(MIR)pulses are of great interest for many scientific and industrial *** we demonstrate a compact fluoride-fiber-based system that generates single solitons tunable from 3 to 3.8μ*** system is composed of an Er:ZBLAN fiber oscillator and amplifier followed by a fusion-spliced Dy:ZBLAN fiber *** Er:ZBLAN fiber amplifier acts as a power booster as well as a frequency shifter to generate Raman solitons up to 3μ*** Dy:ZBLAN fiber amplifier transfers the energy from the residual 2.8μm radiation into the Raman solitons using an in-band pumping scheme,and further extends the wavelength up to 3.8μ*** residual pump radiation and secondary solitons accompanying the soliton self-frequency shift(SSFS)are recycled to amplify Raman solitons,consequently displaying a higher output power and pulse energy,a wider shifting range,and an excellent spectral *** 252 fs pulses at3.8μm with a record average power of 1.6 W and a pulse energy of 23 n J are *** work provides an effective way to develop high-power widely tunable ultrafast single-soliton MIR laser sources,and this method can facilitate the design of other SSFS-based laser systems for single-soliton generation.

关键词： fiber tunable amplifier

基于驾驶模拟的高速公路护栏色彩设计与安全影响研究

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市政技术 2024年第7期42卷 116-123页

作者：夏塽辰宋太龙郑雯婷张昱余沛侨王琛四川成邛雅高速公路有限责任公司四川成都610041 山东省交通科学研究院山东济南250031

传统形式的混凝土护栏形象呆板,与道路环境存在较大的违和感,易使驾乘人员疲劳。为改善高速公路行车环境,依托四川省天府新区—邛崃高速公路项目,基于视觉角度,探讨了色彩变化对驾驶员驾驶行为、生理和心理的影响。采用3Ds Max软件搭建... 详细信息

传统形式的混凝土护栏形象呆板,与道路环境存在较大的违和感,易使驾乘人员疲劳。为改善高速公路行车环境,依托四川省天府新区—邛崃高速公路项目,基于视觉角度,探讨了色彩变化对驾驶员驾驶行为、生理和心理的影响。采用3Ds Max软件搭建了4种色彩类型的仿真场景,共招募25名驾驶员进行驾驶模拟试验,采集其心理、眼动和驾驶行为等数据,并构建了基于组合赋权的TOPSIS综合评价模型。研究结果表明:色彩和对比度会显著影响驾驶员的驾驶行为、生理和心理,尤其是对行驶速度标准差、横向加速度、瞳孔直径等指标的影响较为明显。该研究成果可为不同高速公路护栏色彩设计方案的安全性和可行性提供参考。

关键词：高速公路交通安全混凝土护栏色彩设计组合赋权-TOPSIS

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Experimental study on removing NO from flue gas using microwave irradiation over activated carbon carried catalyst

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Science China(Technological Sciences) 2011年第12期54卷 3431-3436页

作者： MA shuangchen JIN Xin WANG MengXuan JIN YiJing YAO JuanJuan LIU Wei School of Environment North China Electric Power University Baoding 071003 China

Nitrogen oxides(NOx) from flue gas can be removed efficiently by activated carbon continuously irradiated by microwave,which,however,needs high temperature and consumes excessive carbon. If catalyst is added into activated carbon,then reaction temperature can be reduced and selectivity of reaction enhanced. The effects on flue gas denitrification by adding different catalysts to microwave reactor were studied in this paper. It was found that the addition of catalyst could reduce the microwave power required by the same removal efficiency obviously;the difference of removal efficiency was different due to different catalysts,and the Cu-based catalyst has more catalytic action efficiency. Reaction temperature decreased by about 200℃ and removal efficiency increased by 25% after adding Cu-based catalyst. In addition,characteristic analysis for activated carbon conducted by X-ray diffraction confirmed that active component of catalyst existed on the surface of activated carbon.

关键词： microwave activated carbon catalyst flue gas denitrification experimental study

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煤气化灰渣烘烤球磨活化技术研究

粉煤灰综合利用 2024年第1期38卷 45-51页

作者：聂庆科李华伟张日华王庆军刘双辰中冀建勘集团有限公司河北石家庄050200 河北省工业固体废弃物综合利用重点实验室河北石家庄050200 河北省岩土技术创新中心河北石家庄050200

为了提高煤气化灰渣的活性,增加煤气化灰渣资源化利用的途径和范围,实现煤气化灰渣的高值化利用,采用烘烤-球磨-筛分的方法对其进行处理。通过粒径分布试验和SEM试验分析活化前后、不同研磨时间的煤气化灰渣的粒度分布和物质形态,发现... 详细信息

为了提高煤气化灰渣的活性,增加煤气化灰渣资源化利用的途径和范围,实现煤气化灰渣的高值化利用,采用烘烤-球磨-筛分的方法对其进行处理。通过粒径分布试验和SEM试验分析活化前后、不同研磨时间的煤气化灰渣的粒度分布和物质形态,发现颗粒细度直接影响煤气化灰渣的活性,而煤气化灰渣颗粒的分布特征会影响胶凝材料整体的紧密堆积,从而决定硬化体的微观密实程度。通过活化前后的煤气化灰渣与熟石灰的抗压和抗折强度试验验证煤气化灰渣烘烤球磨活化技术的有效性。结果表明:活化后的煤气化灰渣混合料的抗折和抗压强度是未经过活化的煤气化灰渣熟石灰混合料的1.4~3.0倍,证明了煤气化灰渣活化技术的可行性。

关键词：煤气化灰渣高值化利用活化技术地质聚合物

High Energy Yb∶YAG Regenerative Amplifier

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激光与光电子学进展 2021年第17期58卷 438-442页

作者： Zhu Wentao He Huijun Yu JunLin Qingdian Guo Xiaoyang Zhou Cangtao Ruan shuangchen Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology Center for Advanced Material Diagnostic TechnologyCollege of Engineering PhysicsShenzhen Technology UniversityShenzhenGuangdong 518118China College of Physics and Optoelectronic Engineer Shenzhen UniversityShenzhenGuangdong 518060China

A diode pumped high energy Yb∶YAG rod regenerative amplifier was demonstrated with a maximum energy of22.3 m J,excellent energy stability(~0.8%root mean square),and beam quality(M2<1.2)at 10 Hz repetition *** the bes... 详细信息

关键词： laser optics high energy Yb:YAG rod regenerative amplifier

Protective effects of recombinant human growth hormone on cirrhotic rats

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World Journal of Gastroenterology 2004年第19期10卷 2894-2897页

作者： shuangchen Hong-TaoWang BinYang Yu-RuFu Qing-JiaOu DepartmentofGeneralSurgery SunYat-SenMemorialHospitaltheSecondAffiliatedHospitalSunYat-SenUniversityGuangzhou510120GuangdongProvinceChina MedicalResearchCenter SunYat-SenMemorialHospitaltheSecondAffiliatedHospitalSunYat-SenUniversityGuangzhou510120GuangdongProvinceChina

AIM: To investigate the effects and molecular mechanismsof recombinant human growth hormone (rhGH) onprotecting liver function and alleviating portal hypertensionof liver cirrhotic ***: Liver cirrhosis of male Sprague-Dawley ratswas induced by administration of thioacetamide. The ratswith or without liver cirrhosis were randomly divided intofour groups. Group A consisted of the normal rats wastreated with normal saline (NS), group B consisted of thenormal rats was treated with rhGH, group C consisted ofcirrhotic rats was treated with NS, and group D consistedof cirrhotic rats was treated with rhGH. The rats of differentgroups were subcutaneously injected with 0.5 mL of NS or333 ng/kg of rhGH daily for 7 d. After treatments, thefollowing parameters were examined, including GH-bindingcapacity (RO by 12SI-hGH binding, growth hormone receptormRNA(GHR mRNA) expression by RT-PCR, relative contentof collagen (RCC) by histomorphomertry, and level ofmalon-dialdehyde (MDA) and superoxide dismutase (SOD)in liver tissue by thiobarbituric acid reaction and pyrogallicacid self-oxidation, respectively. Serum albumin (ALB),alanine transaminase (ALT) and portal vein pressure (PVP)were also ***: rhGH up-regulated both the GH-binding capacity(R0 and the expression of GHR mRNA in vivo. RT in groupA (72+12 fmol/mg protein) was significantly higher thanthat in group C (31+4 fmol/mg protein) (P<0.05). RT ingroup B (80+9 fmol/mg protein) increased markedlycompared to group A (P<0.05). RT in group D (40+7 fmol/mgprotein) raised remarkably compared with group C (P<0.05),but less than that in group A, and there was no significantGH binding affinity contrast (Kd) change. The GHR mRNAlevel (iOD, pixel) in group A (29+3) was significantly higherthan that in group C (23+3) (P<0.05). GHR mRNA levelswere significantly raised in group B (56+4) and group D(42+8) compared with groups A and C (29+3 and 23+3,respectively) (P<0.05). Compared with the normal liver,MDA level was highe

关键词：保护作用重组细胞生长激素肝硬化老鼠胶原质