检索结果-南通市图书馆

Cerebral proliferative angiopathy in pediatric age presenting as neurological disorders:A case report

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2023年第33期11卷 8071-8077页

作者： Fu-Ren Luo ying zhou Zhong Wang Qi-Yu Liu Department of Radiology The Affiliated Hospital of Southwest Medical UniversityLuzhou 646000Sichuan ProvinceChina Department of Radiology Mianyang Central HospitalMianyang 621000Sichuan ProvinceChina

BACKGROUND Cerebral proliferative angiopathy(CPA)is a rare subtype of arteriovenous *** is extremely rare in pediatric patients and has serious implications for developing ***,reports of these disorders worldwide are limited,and no uniform reference for diagnosis and treatment options *** report the case of a 6-year-old with CPA having predominantly neurological dysfunction and review the literature on pediatric *** SUMMARY We report the case of a pediatric patient with CPA analyzed using digital subtraction angiography(DSA)who presented initially with a neurological disorder as the main *** case is the basis for further discussion of the clinical presentation,pathogenesis,diagnosis,and treatment of CPA in *** the cerebral DSA,the patient was treated conservatively with sedation,fluid replacement,and blood *** could not cooperate with the followup magnetic resonance imaging examination because of her young age,and her family declined further treatment because of the surgery’s high *** was followed up for 3 months;her symptoms did not *** This report of rare pediatric CPA can inform and advance clinical research on congenital cerebrovascular diseases.

关键词： Pediatric cerebral proliferative angiopathy Pathogenesis Diagnosis Treatment Case report

Manifestation of severe pneumonia in anti-PL-7 antisynthetase syndrome and B cell lymphoma:A case report

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2021年第22期9卷 6435-6442页

作者： Xuan-Li Xu Ru-Hui Zhang Yue-Hong Wang Jian-ying zhou Department of Respiratory and Critical Care Medicine The First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003Zhejiang ProvinceChina

BACKGROUND Antisynthetase syndrome(ASS)is characterized by the presence of antisynthetase antibodies coupled with clinical findings such as fever,polymyositis-dermatomyositis and interstitial lung *** is,however,rare to observe ASS association with B cell lymphoma presenting severe pneumonia as the first clinical *** SUMMARY We evaluated a 59-year-old male patient who presented with cough with sputum,shortness of breath and fever for 13 d.A chest computed tomography radiograph revealed bilateral diffuse ground-glass infiltrates in both upper fields,left lingual lobe and right middle ***,the patient was diagnosed with severe community-acquired pneumonia and respiratory *** was empirically treated with broad-spectrum antibiotics,without *** analysis showed an ASS panel with anti-PL7 ***,electromyography evaluation demonstrated a manifestation of myogenic damage,while deltoid muscle biopsy showed irregular muscle fiber bundles especially abnormal lymphocyte *** addition,bone marrow biopsy revealed high invasive B cell ***,the patient was diagnosed with a relatively rare anti–PL7 antibody positive ASS associated with B cell *** This case highlights that rapidly progressive lung lesions and acute hypoxemic respiratory failure associated with heliotrope rash and extremely high lactate dehydrogenase level should be considered as the characteristics of non-infectious diseases,especially ASS and B cell lymphoma.

关键词： Antisynthetase syndrome PL7 B cell lymphoma Severe pneumonia Case

Isolation of mesophyll protoplasts from tea(Camellia sinensis)and localization analysis of enzymes involved in the biosynthesis of specialized metabolites

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Beverage Plant Research 2021年第1期1卷 3-11页

作者： ying zhou Rufang Deng Xinlan Xu Ziyin Yang Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement&Guangdong Provincial Key Laboratory of Applied Botany South China Botanical GardenChinese Academy of Sciences723 Xingke RoadTianhe DistrictGuangzhou 510650China Center of Economic Botany Core Botanical GardensChinese Academy of Sciences723 Xingke RoadTianhe DistrictGuangzhou 510650China University of Chinese Academy of Sciences 19A Yuquan RoadBeijing 100049China

Specialized metabolites in tea(Camellia sinensis)are fundamental quality *** is important to characterize gene function in vivo to identify key enzymes and reactions involved in the biosynthesis of such *** we report a transient expression method to analyze gene function in isolated tea mesophyll *** method is an alternative approach to traditional genetic transformation for studies on gene function in *** screened several tea cultivars and different digestion conditions to optimize protoplast *** of newly emerged leaves of ***‘Zhongbai 4’with 3%cellulase R-10 and 0.3%macerozyme R-10 for about 12 h yielded approximately 107 mesophyll *** encoding enzymes involved in secondary metabolite synthesis were transiently expressed in the protoplasts,and their subcellular locations were *** further improvements in the transfection efficiency,this transient expression system will contribute greatly to the analyses of in vivo gene function in tea.

关键词： transient Camellia analysis

Polystyrene Microspheres Coupled with Hybridization Chain Reaction for Dual‑Amplified Chemiluminescence Detection of Specific DNA Sequences

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Analysis and Testing 2017年第4期1卷 306-314页

作者： ying zhou Yinan Wang Xin Wang Jianzhong Lu School of Pharmacy Fudan University826 Zhangheng RoadShanghai 201203China

We report on a highly sensitive chemiluminescence(CL)assay for the detection of specific DNA sequence,where streptavidin-modified polystyrene microspheres(PS–SA)coupled with hybridization chain reaction(HCR)were employed as dual amplification ***,a“sandwich-type”detection strategy was proposed in our design,which involved capture probe DNA immobilized on the surface of carboxyl-terminated magnetic beads(MB)and the reporter DNA combined with the HCR trigger immobilized on the surface of PS–*** that,two hairpin-type monomers were added to initiate the *** the detection system,CL signal was obtained via the instantaneous derivatization reaction between 3,4,5-trimethoxylphenylglyoxal(TMPG)and guanine bases in the target and the HCR complex binding on the magnetic *** compared to traditional sandwich type(capture/target/reporter)assays,this dual-amplified strategy for sequence-specific DNA detection showed better specificity,lower detection limit and wider linear response range(linear range of 0.01 fmol–10 pmol and a low detection limit of 5 amol).Moreover,this approach could be easily extended to detect a wide range of specific DNA sequences by modification of the hybridization *** believe this simple technique will present a significant step towards early diagnoses of diseases.

关键词： Chemiluminescence HCR Polystyrene microspheres Dual amplification

Structural and electrical transport properties of Dirac-like semimetal PdSn4 under high pressure

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics B 2019年第12期28卷 280-285页

作者： Bowen Zhang Chao An Yonghui zhou Xuliang Chen ying zhou Chunhua Chen Yifang Yuan Zhaorong Yang Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions High Magnetic Field LaboratoryChinese Academy of SciencesHefei 230031China University of Science and Technology of China Hefei 230026China Institutes of Physical Science and Information Technology Anhui UniversityHefei 230601China Key Laboratory of Structure and Functional Regulation of Hybrid Materials(Anhui University) Ministry of EducationHefei 230601China Collaborative Innovation Center of Advanced Microstructures Nanjing 210093China

We conducted in-situ high-pressure synchrotron x-ray diffraction(XRD) and electrical transport measurements on Dirac-like semimetal Pd Sn4 in diamond anvil cells with quasi-hydrostatic pressure condition up to 44.5 GPa–52.0 GPa. The XRD data show that the ambient orthorhombic phase(Ccca) is stable with pressures to 44.5 GPa, and the lattice parameters and unit-cell volume decrease monotonously upon compression. The temperature dependence of the resistance exhibits a metallic conduction and follows a Fermi-liquid behavior below 50 K, both of which keep unchanged upon compression to 52.0 GPa. The magnetoresistance curve at 5 K maintains a linear feature in a magnetic field range of 2.5 T–7 T with increasing pressure to 20.0 GPa. Our results may provide pressure-transport constraints on the robustness of the Dirac fermions.

关键词： high pressure Dirac-like semimetal crystal structure electrical transport

Influence of Bath Composition on Magnetic Properties of Electrodeposited Co-Pt-W Thin Films

在线全文

学校读者我要写书评

暂无评论

Journal of Iron and Steel Research International 2007年第4期14卷 65-68页

作者： GE Hong-liang WEI Guo-ying WU Qiong zhou Qiao-ying WANG Xin-yan College of Material Science and Engineering China Jiliang University Hangzhou 310018 Zhejiang China

Effect of bath composition （[Co^2＋]/[-Pt^Ⅳ ] and [-WO4^2- ], [cit^-]） and pH on the magnetic properties of electrodeposited Co-Pt-W thin films has been investigated. Electrodeposited Co-Pt-W thin films exhibited strong perpendicular magnetic anisotropy when the ratio of [-Co^2＋ ] to [-Pt^Ⅳ ] was 10 ; cathode current efficiency and perpendicular magnetic anisotropy showed little variations when [WO4^2- ] was lower than 0. 1 mol/L, but perpendicular magnetic anisotropy had strengthened when [WO4^2-] was over 0. 1 mol/L, which could be explained by the fact that the hydrogen evolution could produce pores as magnetic domain pinnings; citrate as complexing reagent can promote the polarization of [Co^2＋] and [Pt^Ⅳ]. As a result, the equilibrium electrode potentials of cobalt and platinum moved to negative direction, which led to the co-deposition of Co, Pt, and W. It was also found out that the as-deposited Co- Pt-W hard magnetic thin films were very homogeneous, smooth, and had the maximum coercivity for the bath pH 8. 5 and the concentration of citrate 0. 26 mol/L.

关键词： electrodeposition Co-Pt-W thin film magnetic property bath composition

FAST SOLUTION OF TRANSIENT SCATTERING FROM ELECTRICALLY LARGE COMPLEX OBJECTS BASED ON TIME DOMAIN INTEGRAL EQUATION SOLVERS

在线全文

学校读者我要写书评

暂无评论

Journal of Electronics(China) 2010年第1期27卷 99-104页

作者： Li ying Ren Meng zhou Dongming He Jianguo College of Electronics Science and Engineering National University of Defense Technology Changsha 410073 China

A fast Time Domain Integral Equation(TDIE) solver is presented for analysis of transient scattering from electrically large conducting complex *** numerical process of Marching-On-in-Time(MOT) method based TDIE encounters high computational cost and exorbitant memory requirements.A group-style accelerated method-Plane Wave Time Domain(PWTD) algorithm,which permits rapid evaluation of transient wave field generated by temporally bandlimited sources,is employed to reduce the computational cost of MOT-based TDIE *** efficient compressed storage technique for sparse matrix is adopted to decrease the enormous memory requirements of *** scheme of the Multi-Level PWTD(MLPWTD)-enhanced MOT with compressed storage for sparse matrix is presented for analysis of transient scattering from electrically large complex objects in this *** numerical simulation results demonstrate the validity and efficiency of the presented scheme.

关键词： Time Domain Integral Equation(TDIE) Marching-On-in-Time(MOT) Plane Wave Time Domain(PWTD) Compressed storage

InP quantum dots on g-C_(3)N_(4) nanosheets to promote molecular oxygen activation under visible light

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2020年第10期31卷 2689-2692页

作者： Yuehan Cao Qian Zheng Zhiqiang Rao Ruiyang Zhang Zhanghui Xie Shan Yu ying zhou State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum UniversityChengdu 610500China The Center of New Energy Materials and Technology School of New Energy and MaterialsSouthwest Petroleum UniversityChengdu 610500China

Largely limited by the high dissociation energy of the O—O bond,the photocatalytic molecular oxygen activation is highly challenged,which re strains the application of photocatalytic oxidation technology for atmospheric pollutants ***,we design and fabricate the InP QDs/g-C_(3)N_(4) *** introduction of InP QDs promotes the charge transfer within the interface resulting in the effective separation of photo-generated ***,InP QDs greatly facilitates the activation of molecular oxygen and promote the formation of O_(2)·under visible-light illuminatio *** conclusions are identified by experimental and calculation ***,NO can be combined with the O_(2)·to form O—O—N—O intermediate to direct conversion into NO_(3).As a result,the NO removal ratio of g-C_(3)N_(4) has a one fold increase after InP QDs loaded and the generation of NO_(2) is effectively *** wo rk may provide a strategy to design highly efficient materials for molecular oxygen activation.

关键词： InP quantum dots g-C_(3)N_(4)nanosheets Molecular oxygen activation O-O-N-O intermediate Photocatalytic NO removal

Comprehensive recovery of gold and base-metal sulfide minerals from a low-grade refractory ore

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2016年第12期23卷 1377-1386页

作者： Wen-juan Li Shuang Liu Yong-sheng Song Jian-kang Wen Gui-ying zhou Yong Chen National Engineering Laboratory of Biohydrometallurgy General Research Institute for Nonferrous Metals School of Chemical & Environmental Engineering China University of Mining & TechnologyBeijing

The comprehensive recovery of small amounts of valuable minerals such as gold and base-metal sulfide minerals from a low-grade refractory ore was investigated. The following treatment strategy was applied to a sample of this ore： gold flotation-gold concen- trate leaching-lead and zinc flotation from the gold concentrate leaching residue. Closed-circuit trials of gold flotation yielded a gold concen- trate that assayed at 40.23 g·t-1 Au with a recovery of 86.25%. The gold concentrate leaching rate was 98.76%. Two variants of lead-zinc flotation from the residue--preferential flotation of lead and zinc and bulk flotation of lead and zinc--were tested using the middling processing method. Foam from the reflotation was returned to the lead rougher flotation or lead-zinc bulk flotation, whereas middlings from reflotation were discarded. Sulfur concentrate was a byproduct. The combined strategy of flotation, leaching, and flotation is recommended for the treatment of this kind of ore.

关键词： comprehensive recovery gold sulfide minerals mineralogy refractory ore treatment