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Research on Bast Fiber Extracted from the White Bark of Three Species in the Genus Broussonetia

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Chinese Journal of Polymer Science 2024年第6期42卷 729-738页

作者： shan-shan Jin Si-Nong Wang yan-yan Huang Jing-Yu zhang Peng Liu Hui Yu Hong-Dong zhang Yu-Liang yang Institute for Preservation and Conservation of Chinese Ancient Books Fudan University LibraryFudan UniversityShanghai200433China State key laboratory of Molecular Engineering of polymers Department of Macromolecular ScienceFudan UniversityShanghai200433China

Against the backdrop of a global paper resource shortage,there is a growing need to identify fast-growing tree species capable of producing long-lasting *** plant species namely Broussonetia kazinoki,Broussonetia papyrifera and hybrid paper mulberry,belong to the Broussonetia genus,were collected from China to study their white bark suitability for pulp and *** chemical composition revealed that the holocellulose content in Broussonetia kazinoki and Broussonetia papyrifera was more than 80%.The molecular weight distribution of several holocellulose/α-cellulose is observed by GPC,which allows us to better observe the changes of various components on the molecular *** yield,lignin,whiteness,and molecular weight of the pulps obtained by NaOH treatment were *** microscope was used to characterize the fiber length-width ratio and ***,the improvement of the fiber rigidity method based on the Kratky-Porod chain model makes it more theoretical and further reveals the influencing factors of fiber *** study demonstrates the high potentiality of these three species for papermaking applications.

关键词： Broussonetia genus Cellulose Alkaline pulping Kratky-Porod chain model Fiber rigidity

Bystander effect and abscopal effect in recurrent thymic carcinoma treated with carbon-ion radiation therapy:A case report

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World Journal of Clinical Cases 2021年第22期9卷 6538-6543页

作者： yan-shan zhang Yi-He zhang Xiao-Jun Li Ting-Chao Hu Wei-Zuo Chen Xin Pan Hong-Yu Chai yan-Cheng Ye Department of Heavy Ion Center Wuwei Cancer HospitalWuwei 733000Gansu ProvinceChina

BACKGROUND Although the bystander effect and abscopal effect are familiar in medicine,they are relatively rare in clinical ***,we report the case of a patient who demonstrated an obvious bystander effect and abscopal effect response following carbon-ion irradiation for recurrent thymic *** SUMMARY A 44-year-old female presented with shortness of *** years prior,she was diagnosed with athymic tumor located in the anterosuperior *** underwent extensive tumor resection,and the postoperative pathologic diagnosis was thymic *** was administered 50 Gy/25 Fx of postoperative *** 2019,she was diagnosed with a recurrence of thymic carcinoma,with multiple recurrent nodules and masses in the left thoracic chest and peritoneal cavity,the largest of which was in the diaphragm pleura proximal to the pericardium,with a size of 6.7 cm×5.3 cm×4.8 *** received carbonion *** carbon-ion radiotherapy treatment,the treated masses and the untreated masses were observed to have noticeably shrunk on the day of carbon-ion radiotherapy completion and on follow-up *** followed the CARE Guidelines for consensus-based clinical case reporting guideline development and completed the CARE Checklist of information to report this *** This report is the first of obvious abscopal and bystander effects following carbonion irradiation in a human patient,and further research is needed to better elucidate the mechanisms of bystander and abscopal effects.

关键词： Bystander effect Abscopal effect Recurrent thymic carcinoma Carbon-ion radiation therapy Case report

Effects of impregnation sequence on the NH_(3)-SCR activity and hydrothermal stability of a Ce-Nb/SnO_(2) catalyst

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Journal of Environmental Sciences 2024年第4期138卷 450-457页

作者： Ying Zhu Wenpo shan Zhihua Lian Jingjing Liu yan zhang Hong He Center for Excellence in Regional Atmospheric Environment and Key Laboratory of Urban Pollutant Conversion Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control Ningbo Urban Environment Observation and Research StationInstitute of Urban EnvironmentChinese Academy of SciencesNingbo 315800China State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China

Hydrothermal stability is crucial for the practical application of deNO_(x)catalyst on diesel vehicles,for the selective catalytic reduction of NO_(x)with NH_(3)(NH_(3)-SCR).SnO_(2)-based materials possess superior hydrothermal stability,which is attractive for the development of NH_(3)-SCR *** this work,a series of Ce-Nb/SnO_(2)catalysts,with Ce and Nb loading on SnO_(2)support,were prepared by impregnation *** was found that,the NH_(3)-SCR activities and hydrothermal stabilities of the Ce-Nb/SnO_(2)catalysts significantly varied with the impregnation sequences,and the Ce-Nb(f)/SnO_(2) catalyst that firstly impregnated Nb and then impregnated Ce exhibited the best *** characterization results revealed that CeNb(f)/SnO_(2)possessed appropriate acidity and redox ***,the strong synergistic effect between Nb and Sn species stabilized the structure and maintained the dispersion of acid *** study may provide a new understanding for the effect of impregnation sequence on activity and hydrothermal stability and a new environmental-friendly NH_(3)-SCR catalyst with potential applications for NO_(x)removal from diesel and hydrogenfueled engines.

关键词： NO_(x)emission control NH_(3)-SCR Hydrothermal stability Ce-Nb/SnO_(2)catalyst Impregnation sequence

Efficient Pt/KFI zeolite catalysts for the selective catalytic reduction of NOxby hydrogen

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Journal of Environmental Sciences 2024年第4期138卷 102-111页

作者： Ligang zhang Yulong shan Zidi yan Zhongqi Liu Yunbo Yu Hong He School of Rare Earths University of Science and Technology of ChinaHefei 230026China Ganjiang Innovation Academy Chinese Academy of SciencesGanzhou 341119China State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China

Aiming at purification of NO_(x)from hydrogen internal combustion engines(HICEs),the hydrogen selective catalytic reduction(H_(2)-SCR)reaction was investigated over a series of Pt/KFI zeolite catalysts.H_(2)can readily reduce NO_(x)to N_(2)and N_(2)O while O_(2)inhibited the deNO_(x)efficiency by consuming the reductant H_(2).The Pt/KFI zeolite catalysts with Pt loading below 0.1wt.% are optimized H_(2)-SCR catalysts due to its suitable operation temperature window since high Pt loading favors the H_(2)-O_(2)reaction which lead to the insufficient of *** to metal Pt^(0)species,Pt^(δ+)species showed lower activation energy of H_(2)-SCR reaction and thought to be as reasonable active ***,Eley-Rideal(E-R)reaction mechanism was proposed as evidenced by the reaction orders in kinetic ***,the optimized reactor was designed with hybrid Pt/KFI catalysts with various Pt loading which achieve a high NO_(x)conversion in a wide temperature range.

关键词： Pt/KFI zeolite Pt loading H_(2)-SCR Reaction conditions Kinetics studies

Isotopic dependence of the yield ratios of light fragments from different projectiles and their unified neutron skin thicknesses

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Nuclear Science and Techniques 2024年第3期35卷 228-236页

作者： Ting-Zhi yan shan Li School of Energy and Power Engineering Northeast Electric Power UniversityJilin 132012China

The yield ratios of neutron-proton(R(n/p))and^(3)H-^(3)He(R(^(3)H∕^(3)He))with reduced rapidity from 0 to 0.5 were simulated at 50 MeV/u even-even ^(36−56)Ca+^(40)Ca,even-even ^(48−78)Ni+^(58)Ni,and ^(100−139)Sn(every third isotopes)+112 Sn for full reduced impact parameters using the isospin-dependent quantum molecular dynamics(IQMD)*** neutron and proton density distributions and root-mean-square radii of the reaction systems were obtained using the Skyrme-Hartree-Fock model,which was used for the phase space initialization of the projectile and target in *** defined the unified neutron skin thickness asΔRnp=^(1∕2) n−^(1∕2)p,which was negative for neutron-deficient *** unifiedΔRnp values for nuclei with the same relative neutron excess from different isotopic chains were nearly equal,except for extreme neutron-rich isotopes,which is a type of scaling *** yield ratios of the three isotopic chain-induced reactions,which depended on the reduced impact parameter and unified neutron skin thickness,were *** results showed that both R(n/p)and R(^(3)H∕^(3)He)decreased with a reduced impact parameter for extreme neutron-deficient isotopes;however,they increased with reduced impact parameters for extreme neutron-rich isotopes,and increased with theΔRnp of the projectiles for all reduced impact *** addition,a scaling phenomenon was observed betweenΔR np and the yield ratios in peripheral colli-sions from different isotopic chain projectiles(except for extreme neutron-rich isotopes).Thus,R(n/p)and R(^(3)H∕^(3)He)from peripheral collisions were suggested as experimental probes for extracting the neutron or proton skin thicknesses of non-extreme neutron-rich nuclei from different isotopic chains.

关键词： Exotic nuclei Unified neutron skin thickness Yield ratios IQMD

Laboratory simulation and CO_(2) flooding efficiency of oil-water transition zones in a low permeability reservoir in the Jilin Oilfield

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Petroleum Research 2018年第3期3卷 283-287页

作者： Ying-Ying Sun shan-yan zhang Zhao-Peng yang Guo-Qiang Sang Tong Li yang-Cheng Li State Key Laboratory of EOR Beijing100083China Research Institute of Petroleum Exploration and Development Beijing100083China Engineering and Geological Technology Team of Daqing Oilfield Underground Operation Branch Company Daqing163000China

Geological reserves of oil-water transition zone(OWTZ)in low-permeability reservoirs have been considered as uneconomical resources because of high water cut and low *** the OWTZ may account for 30%-50%of a reservoir,it has not been paid more attentions *** average oil saturation of the OWTZ is about 35%,which is equal to that of a reservoir after water ***,CO_(2) flooding is an effective technique for residual oil recovery after water flooding,which could reduce the residual oil saturation ***,it is of significance for the EOR of the low-permeability reservoir if the CO_(2) flooding could be successfully applied in the *** this study,a method based on a long core to simulate distribution of oil saturation in OWTZs is set up in the laboratory using bidirectional *** order to investigate CO_(2) flooding characteristics in OWTZs,experiments are carried out on 3 sets of initial oil saturation,and the recoverable reserves of the OWTZ and its contribution to the EOR are calculated based on the WJ reservoir in the Jilin Oilfield,China.

关键词： Oil-water transition zone Initial oil saturation CO_(2)flooding Laboratory simulation CT scanning

Carbon ion radiotherapy for synchronous choroidal melanoma and lung cancer: A case report

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World Journal of Clinical Cases 2021年第33期9卷 10374-10381页

作者： yan-shan zhang Ting-Chao Hu yan-Cheng Ye Jin-Hua Han Xiao-Jun Li Yi-He zhang Wei-Zuo Chen Hong-Yu Chai Xin Pan Xin Wang Yu-Ling yang Heavy Ion Center Wuwei Cancer HospitalWuwei 733000Gansu ProvinceChina Department of Ophthalmology Wuwei Cancer HospitalWuwei 733000Gansu ProvinceChina

BACKGROUND Despite being the most common intraocular malignancy among adults,choroidal melanoma is a rare cancer type,even more so when accompanied by lung *** report a patient with synchronous choroid melanoma and lung cancer treated with carbon ion radiotherapy(CIRT).CASE SUMMARY A 41-year-old woman was transferred to our center with a diagnosis of choroidal melanoma in her right *** the examination,we found a right lung tumor that was histologically diagnosed as lung *** patient was treated with CIRT for both malignant *** CIRT dose was 70 photon equivalent doses(GyE)in five fractions for the right eye choroidal melanoma and 72 GyE in 16 fractions for the right lung *** 3 mo after CIRT,the choroidal melanoma completely disappeared,as did the right lung cancer 7 mo after;the patient was in complete *** CIRT may be an effective treatment for double primary lung cancer and choroid melanoma.

关键词： Melanoma Lung neoplasms Heavy ion radiotherapy Neoplasms Choroid neoplasms Case report

Porous Ti_(3)C_(2)T_(x) MXene nanosheets sandwiched between polyimide fiber mats for electromagnetic interference shielding

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Nano Research 2024年第3期17卷 2070-2078页

作者： Wenhao Liang Juntao Wu shan zhang Pei-yan Zhao Yi Cong Yongqiang Guo Guang-Sheng Wang Key Laboratory of Bioinspired Smart Interfacial Science and Technology of Ministry of Education School of ChemistryBeihang UniversityBeijing 100191China

With the rapid development of wireless communication technology and electronic devices,the issue of electromagnetic interference(EMI)is becoming increasingly *** a new and flexible electromagnetic interference shielding material has become a challenging ***,a sandwich-structured EMI shielding composite film was prepared using electrospinning and vacuum filtration *** this process,a porous MXene was synthesized through a reaction with cobalt acetate and served as the intermediate layer in the composite film to shield electromagnetic *** electrospun polyimide(PI)fibers were used as the top and bottom layers of the composite film,which can protect the porous MXene from *** lightweight and flexible composite film integrates electromagnetic interference shielding and thermal insulation capabilities,showing excellent comprehensive *** composite film achieves an EMI shielding effectiveness of 48.8 dB in X-band(8.2–12.4 GHz),and absolute shielding effectiveness of the composite film reached a satisfying 4142.43(dB·cm^(2))/*** to the design of a multi-layer porous structure,the density of the composite film is 0.65 g/***,the thermal conductivity of the film is 0.042 W/(m·K)due to the clamping of electrospun PI fibers,showing excellent thermal insulation ***,the composite film exhibits excellent high and low-temperature *** summary,this work provides a feasible strategy for preparing a lightweight polymer-based EMI shielding film.

关键词： porous MXene polyimide electromagnetic interference shielding thermal insulation

Carbon ion radiotherapy for bladder cancer: A case report

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World Journal of Clinical Cases 2021年第26期9卷 7833-7839页

作者： yan-shan zhang Xiao-Jun Li Yi-He zhang Ting-Chao Hu Wei-Zuo Chen Xin Pan Hong-Yu Chai Xin Wang Yu-Ling yang Heavy Ion Center Wuwei Cancer HospitalWuwei 733000Gansu ProvinceChina

BACKGROUND Radical cystectomy is considered the first choice for the treatment of muscleinvasive bladder ***,for some patients who have lost the indications for surgery,external beam radiotherapy is a non-invasive and effective *** SUMMARY A 76-year-old patient with bladder cancer who had serious comorbidities and could not tolerate surgery or chemotherapy came to the Wuwei Heavy Ion *** received carbon ion radiotherapy(CIRT)with a whole-bladder dose of 44 GyE and tumor boost of 20 *** he finished CIRT,his bladder cancer-related hematuria completely disappeared,and computed tomography examination showed that the tumor had obviously decreased in *** the 3-mo follow-up,the tumor disappeared,and there were no acute or late adverse *** was well tolerated in this *** CIRT may allow for avoiding resection and was well tolerated with curative outcomes.

关键词： Carbon ion radiotherapy Bladder cancer Galloping scheme Case report