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COMPLEX WIENER-ITO CHAOS DECOMPOSITION REVISITED 预览
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作者 陈勇 刘勇 《数学物理学报:B辑英文版》 SCIE CSCD 2019年第3期797-818,共22页
In this article, some proper ties of complex Wiener-Ito multiple integrals and complex Ornstein-Uhlenbeck opera tors and semigroups are obtained. Those include Stroock's formula, Hu-Meyer formula, Clark-Ocone form... In this article, some proper ties of complex Wiener-Ito multiple integrals and complex Ornstein-Uhlenbeck opera tors and semigroups are obtained. Those include Stroock's formula, Hu-Meyer formula, Clark-Ocone formula, and the hypercontractivity of complex Ornstein-Uhlenbeck semigroups. As an application, several expansions of the fourth moments of complex Wiener-Ito multiple integrals are given. 展开更多
关键词 COMPLEX Hermite polynomials COMPLEX Gaussian isonormal processes COMPLEX Wiener-Ito Multiple INTEGRALS COMPLEX ORNSTEIN-UHLENBECK operators and SEMIGROUPS
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Polymer complexation for functional fibers
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作者 HUANG WenTao LIU DeZhong +2 位作者 LI JieFu ZHU LiPing YANG ShuGuang 《中国科学:技术科学英文版》 SCIE EI CAS CSCD 2019年第6期931-944,共14页
Polymer complex is a polymer association of different polymers with good miscibility resulting from the relatively strong intermolecular interactions or stereo match effect between polymer chains. Polymer complexes ha... Polymer complex is a polymer association of different polymers with good miscibility resulting from the relatively strong intermolecular interactions or stereo match effect between polymer chains. Polymer complexes have been utilized in various fields, such as food, biomedical, cosmetic, and pharmacy. Fiber is one of the most important material forms, and shaping polymer complex into fiber will further extend its applications. This review briefly introduces the fundamentals of polymer complex, and then demonstrates the main approaches to produce polymer complex fibers(PCFs). Followed by, the modification of fibers with polymer complexes is presented. Finally, the applications of PCFs and the polymer complex modified fibers are provided, and the prospect of polymer complexation for fibers is discussed properly. 展开更多
关键词 interpolymer COMPLEX functional FIBER POLYELECTROLYTE COMPLEX HYDROGEN-BONDED polymer COMPLEX FIBER MODIFICATION
Involvement of T-complex protein 1-ring complex/chaperonin containing T-complex protein 1(TRiC/CCT)in retrograde axonal transport through tau phosphorylation 预览
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作者 Xu-Qiao Chen 《中国神经再生研究:英文版》 SCIE CAS CSCD 2019年第4期588-590,共3页
The cytosolic chaperonin T-complex protein 1-ring complex(TRiC)or chaperonin containing T-complex protein 1(CCT)is essential in de novo folding of approximately 10%of the eukaryotic,newly translated polypeptides as we... The cytosolic chaperonin T-complex protein 1-ring complex(TRiC)or chaperonin containing T-complex protein 1(CCT)is essential in de novo folding of approximately 10%of the eukaryotic,newly translated polypeptides as well as misfolded proteins.There is a close link between the TRiC/CCT cytosolic chaperonin and neurodegenerative diseases(Lopez et al.,2015).A lot of research suggests that CCT plays neuroprotective roles in neurodegenerative diseases including Huntington’s disease(Lopez et al.,2015).Either overexpression of a single or all eight subunits(CCT1-8)or treatment of the substrate-binding apical domain of yeast CCT1(ApiCCT1)prevented mutant Huntingtin aggregation and improved cellular and neuronal functions(Zhao et al.,2016).Importantly,our recent study has demonstrated that both CCT and ApiCCT could reduce mutant Huntingtin level and enhance both anterograde and retrograde axonal transport of brain-derived neurotrophic factor.These results led to restoration of the trophic status of striatal neurons from a bacterial artificial chromosome transgenic mouse model of Huntington’s disease(Zhao et al.,2016).Axonal transport is regulated by many factors including microtubule-associated protein tau,which promotes tubulin polymerization and stabilizes microtubules.Impaired interaction between tau and microtubules plays a vital role in the pathogenesis of multiple neurodegenerative diseases(Wang and Mandelkow,2016).Interestingly,tau phosphorylation is also observed in brains of several Huntington’s disease mouse models and Huntington’s disease patients(Gratuze et al.,2016).In a recent study,we explored if CCT subunit has any effect on axonal transport in a tau-dependent pathway(Chen et al.,2018b).We focused on the retrograde axonal transport of brain-derived neurotrophic factor,as neurotrophic factor-mediated signaling in the form of signaling endosome is essential in both the developing and the mature nervous system and dysregulation of trafficking of neurotrophic factors is tightly linked to disorders of th 展开更多
关键词 T-COMPLEX PROTEIN 1-ring complex(TRiC) CHAPERONIN CONTAINING T-COMPLEX PROTEIN 1(CCT) Involvemen
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Experimental characterization of the 3D linear viscoelastic behavior of cold recycled bitumen emulsion mixtures
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作者 Andrea Graziani Carlotta Godenzoni Francesco Canestrari 《交通运输工程学报(英文版)》 CSCD 2019年第4期324-336,共13页
Cold mixtures with bitumen emulsion are produced at ambient temperature, leading to substantial reductions of energy consumption and atmospheric emissions. In cold recycling applications, cement is normally used to im... Cold mixtures with bitumen emulsion are produced at ambient temperature, leading to substantial reductions of energy consumption and atmospheric emissions. In cold recycling applications, cement is normally used to improve the mixture performance. Thus, the rheological behavior of cold recycled mixtures is different from that of conventional hot mixtures because it is due to the interaction of fresh bitumen, aged bitumen and cementitious bonds. In this study, we investigated the three-dimensional(3 D) linear viscoelastic(LVE) behavior of a cement-bitumen treated material(CBTM) mixture fabricated using bitumen emulsion and cement. For comparison, we also investigated the 3 D LVE behavior of hot-mix asphalt containing 25% of reclaimed asphalt and fabricated using polymermodified binder. Sinusoidal axial tests on cylindrical specimens, were carried out at various temperatures(from 0℃ to 50℃) and frequencies(from 0.1 to 12 Hz). The complex Young’s modulus E~*and the complex Poisson’s ratio v~*were determined through the measurement of axial and transverse strain. We show that when considering E*, CBTM mixtures may be considered thermo-rheologically simple and the Huet-Sayegh model can be used to simulate the frequencyetemperature dependence. On the other hand, when considering v*the behavior of CBTM mixtures is very different from that of hot mix asphalt. In particular, its absolute value is almost constant and very close to 0.15. 展开更多
关键词 BITUMEN EMULSION COLD RECYCLING COMPLEX MODULUS COMPLEX Poisson’s ratio Huet-Sayegh model
Two New Zn(Ⅱ) and Co(Ⅱ) Coordination Polymers Constructed by 4-Bromobenzoic Acid and 1,4-Bis(imidazol-1-yl)-butane: Synthesis, Crystal Structure and Theoretical Calculations 预览
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作者 潘亚茹 李秀梅 +2 位作者 刘博 周实 常鹰飞 《结构化学》 SCIE CAS CSCD 2019年第4期635-643,共9页
Two new coordination polymers, [Zn(bba)2(bib)]2n(1) and [Co0.5(bba)(bib)0.5]2n(2)(Hbba = 4-bromobenzoic acid, bib = 1,4-bis(imidazol-1-yl)-butane), have been hydrothermally designed and synthesized, and their structur... Two new coordination polymers, [Zn(bba)2(bib)]2n(1) and [Co0.5(bba)(bib)0.5]2n(2)(Hbba = 4-bromobenzoic acid, bib = 1,4-bis(imidazol-1-yl)-butane), have been hydrothermally designed and synthesized, and their structures were determined by elemental analyses, IR spectroscopy, TG, fluorescence spectroscopy, X-ray single-crystal and powder diffraction. Complexes 1 and 2 both belong to the monoclinic system and exhibit one-dimensional zigzag chain-like structure. In addition, we analyzed Natural Bond Orbital(NBO) in using the PBE0/LANL2 DZ method built in Gaussian 03 Program. The calculation results indicated the obvious covalent interaction between the coordinated atoms and Zn(Ⅱ), Co(Ⅱ) ions. 展开更多
关键词 SYNTHESIS crystal structure Zn(Ⅱ) COMPLEX Co(Ⅱ) COMPLEX natural bond orbital
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Identifying topologies and system parameters of uncertaintime-varying delayed complex networks
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作者 WANG Xiong GU HaiBo +1 位作者 WANG QianYao LU JinHu 《中国科学:技术科学英文版》 SCIE EI CAS CSCD 2019年第1期94-105,共12页
Node dynamics and network topologies play vital roles in determining the network features and network dynamical behaviors.Thus it is of great theoretical significance and practical value to recover the topology struct... Node dynamics and network topologies play vital roles in determining the network features and network dynamical behaviors.Thus it is of great theoretical significance and practical value to recover the topology structures and system parameters of uncertain complex networks with available information. This paper presents an adaptive anticipatory synchronization-based approach to identify the unknown system parameters and network topological structures of uncertain time-varying delayed complex networks in the presence of noise. Moreover, during the identification process, our proposed scheme guarantees anticipatory synchronization between the uncertain drive and constructed auxiliary response network simultaneously. Particularly, our method can be extended to several special cases. Furthermore, numerical simulations are provided to verify the effectiveness and applicability of our method for reconstructing network topologies and node parameters. We hope our method can provide basic insight into future research on addressing reconstruction issues of uncertain realistic and large-scale complex networks. 展开更多
关键词 SYSTEM parameters and network TOPOLOGIES identification anticipatory synchronization UNCERTAIN time-varying delayed COMPLEX NETWORKS noise-perturbed COMPLEX NETWORKS
Pseudo-anti commuting Ricci tensor for real hypersurfaces in the complex hyperbolic quadric
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作者 Young Jin Suh 《中国科学:数学英文版》 SCIE CSCD 2019年第4期679-698,共20页
We introduce a new notion of pseudo-anti commuting Ricci tensor for real hypersurfaces in the noncompact complex hyperbolic quadric Q^m*= SO20,m/SO2SOm and give a complete classification of these hypersurfaces.
关键词 pseudo-anti COMMUTING Ricci tensor pseudo-Einstein A-isotropic A-principal COMPLEX conjugation COMPLEX HYPERBOLIC QUADRIC
On Almost Controllability of Dynamical Complex Networks with Noises
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作者 CAI Ning HE Ming +1 位作者 WU Qiuxuan KHAN M.Junaid 《系统科学与复杂性学报:英文版》 SCIE EI CSCD 2019年第4期1125-1139,共15页
This paper discusses the controllability problem of complex networks.It is shown that almost any weighted complex network with noise on the strength of communication links is controllable in the sense of Kalman contro... This paper discusses the controllability problem of complex networks.It is shown that almost any weighted complex network with noise on the strength of communication links is controllable in the sense of Kalman controllability.The concept of almost controllability is elaborated by both theoretical discussions and experimental verifications. 展开更多
关键词 Communication link complex network CONTROLLABILITY WEIGHT
Recurrent surgical site infection after anterior cruciate ligament reconstruction:A case report 预览
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作者 Don Koh Shi Ming Tan Andrew Hwee Chye Tan 《世界骨科杂志(英文版)》 2019年第6期255-261,共7页
BACKGROUND Surgical site infections following anterior cruciate ligament(ACL)reconstruction are an uncommon but potentially devastating complication.In this study,we present an unusual case of recurrent infection of t... BACKGROUND Surgical site infections following anterior cruciate ligament(ACL)reconstruction are an uncommon but potentially devastating complication.In this study,we present an unusual case of recurrent infection of the knee after an ACL reconstruction,and discuss the importance of accurate diagnosis and appropriate management,including the issue of graft preservation versus removal.CASE SUMMARY A 33-year-old gentleman underwent ACL reconstruction using a hamstring tendon autograft with suspensory Endobutton fixation to the distal femur and an interference screw fixation to the proximal tibia.Four years after ACL reconstruction,he developed an abscess over the proximal tibia and underwent incision and drainage.Remnant suture material was found at the base of the abscess and was removed.Five years later,he re-presented with a lateral distal thigh abscess that encroached the femoral tunnel.He underwent incision and drainage of the abscess which was later complicated by a chronic discharging sinus.Repeated magnetic resonance imaging revealed a fistulous communication between the lateral thigh wound extending toward the femoral tunnel with suggestion of osteomyelitis.Decision was made for a second surgery and the patient was counselled about the need for graft removal should there be intraarticular involvement.Knee arthroscopy revealed the graft to be intact with no evidence of intra-articular involvement.As such,the decision was made to retain the ACL graft.Re-debridement,excision of the sinus tract and removal of Endobutton was also performed in the same setting.Joint fluid cultures did not grow bacteria.However,tissue cultures from the femoral tunnel abscess grew Enterobacter cloacae complex,similar to what grew in tissue cultures from the tibial abscess five years earlier.In view of the recurrent and indolent nature of the infection,antibiotic therapy was escalated from Clindamycin to Ertapenem.He completed a six-week course of intravenous antibiotics and has been well for six months since surgery,with excellent 展开更多
关键词 Chronic SURGICAL SITE INFECTION Anterior CRUCIATE ligament reconstruction SURGICAL SITE INFECTION Graft preservation ENTEROBACTER CLOACAE complex Septic arthritis Case report
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Salamo型三核镍(Ⅱ)配合物的合成、晶体结构与Hirshfeld表面分析 预览
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作者 于盟 穆浩冉 +3 位作者 刘玲芝 李娜 白杨 董秀延 《无机化学学报》 SCIE CAS CSCD 北大核心 2019年第6期1109-1120,共12页
合成了2种新设计的Salamo型配合物,{[Ni(L1)(n-propanol)]2(OAc)2Ni}·2(n-propanol)(1)和{[Ni(L2)(n-butanol)]2(OAc)2Ni}·2(n-butanol)(2),并用元素分析、红外光谱、紫外-可见光谱、Hirshfeld表面分析和单晶X射线晶体学对其... 合成了2种新设计的Salamo型配合物,{[Ni(L1)(n-propanol)]2(OAc)2Ni}·2(n-propanol)(1)和{[Ni(L2)(n-butanol)]2(OAc)2Ni}·2(n-butanol)(2),并用元素分析、红外光谱、紫外-可见光谱、Hirshfeld表面分析和单晶X射线晶体学对其进行了表征。X射线晶体学分析表明,配合物1和2均为对称的三核镍(Ⅱ)配合物。1和2中的镍(Ⅱ)都是六配位的,形成了扭曲的八面体几何构型。晶体结构分析和Hirshfeld表面分析均表明,1和2通过分子间氢键作用分别形成稳定的一维链状和二维超分子结构。 展开更多
关键词 Salamo型配体 配合物 合成 晶体结构 Hirshfeld表面分析
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Preparation and Characterization of Magnetic Fe3O4-PAMAM-antibody Complex and Its Application in the Removal of Tetracycline from Wastewater 预览
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作者 欧敏锐 张子惠 +3 位作者 陈志鸿 温昱恺 杨黄浩 许小平 《结构化学》 SCIE CAS CSCD 2019年第7期1136-1145,共10页
Antigens and antibodies can bind specifically, so antibiotic antibody shows potential biological and environmental applications on the removal of antibiotic. In the present study, novel antibody complex was synthesize... Antigens and antibodies can bind specifically, so antibiotic antibody shows potential biological and environmental applications on the removal of antibiotic. In the present study, novel antibody complex was synthesized from polyamide-amine dendrimer immobilized tetracycline(TC) antibody with the encapsulation of magnetic Fe3O4 nanoparticles. As-prepared magnetic Fe3O4-PAMAM-antibody complexes were characterized by different techniques such as Fourier transform infrared(FT-IR), X-ray diffraction(XRD), Nuclear magnetic resonance(NMR)and ultraviolet(UV) analysis spectra. The prepared antibody complexes exhibited high adsorption properties for TC from aqueous solutions. These results suggest that the antibody complex expects to be a potential candidate for the wastewater treatment. 展开更多
关键词 PAMAM MAGNETIC FE3O4 ANTIBODY COMPLEX TETRACYCLINE
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黑木耳多糖顺铂配合物抗HeLa和LoVo细胞增殖活性
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作者 邱军强 苗晶囡 +1 位作者 张华 刘树民 《中国现代应用药学》 CAS CSCD 北大核心 2019年第14期1729-1732,共4页
目的研究不同分子量黑木耳多糖(Auricularia auricula polysaccharide,AAP)能否与顺铂形成配合物,同时研究其配合物对HeLa和LoVo细胞的抗肿瘤细胞增殖活性。方法采用'One pot'法合成不同分子量的黑木耳多糖顺铂配合物(Auricular... 目的研究不同分子量黑木耳多糖(Auricularia auricula polysaccharide,AAP)能否与顺铂形成配合物,同时研究其配合物对HeLa和LoVo细胞的抗肿瘤细胞增殖活性。方法采用'One pot'法合成不同分子量的黑木耳多糖顺铂配合物(Auricularia auricula polysaccharide-cis-diaminedichl oroplatinum,AAP-CDDP),并应用MTT法对其体外抗肿瘤细胞增殖活性进行研究。结果 AAP-CDDP的抑制HeLa和LoVo肿瘤细胞增殖活性与其螯合顺铂量密切相关,相关系数r~2分别为0.877 5和0.913 2;其中AAP(Ⅴ)-CDDP具有最强的抗肿瘤细胞增殖活性。结论 AAP与顺铂形成配合物具有很好的抗肿瘤细胞增殖活性。 展开更多
关键词 黑木耳多糖 顺铂 配合物 抗肿瘤
Comparison of Efficacy between 3D Navigation-Assisted Percutaneous Iliosacral Screw and Minimally Invasive Reconstruction Plate in Treating Sacroiliac Complex Injury 预览
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作者 Qi-lin LU Yi-liang ZHU +5 位作者 Xu-gui LI Wei XIE Xiao-zhen WANG Xue-zhen SHAO Xian-hua CAI Xi-ming LIU 《当代医学科学(英文)》 SCIE CAS 2019年第1期81-87,共7页
The clinical efficacy was compared between 3D navigation-assisted percutaneous iliosacral screw(3DPS)and minimally invasive reconstruction plate(MIRP)in treating sacroiliac complex injury and the surgical procedures o... The clinical efficacy was compared between 3D navigation-assisted percutaneous iliosacral screw(3DPS)and minimally invasive reconstruction plate(MIRP)in treating sacroiliac complex injury and the surgical procedures of 3DPS were introduced.A retrospective analysis was performed on 49 patients with sacroiliac complex injury from March 2013 to May 2017.Twenty-one cases were treated by 3DPS,and 28 cases by MIRP.Intraoperative indexes as operative time,blood loss,incision length,length of hospital stay and postoperative complications were respectively documented.Quality of reduction was postoperatively evaluated by Matta radiological criteria,and clinical effect was assessed by Majeed scoring criteria at the last followup.Operative time and hospital stay were significantly shortened,and blood loss,and incision length were significantly reduced in 3DPS group as compared with those in MIRP group(P<0.05).No statistically significant difference was found between 3DPS group and MIRP group in the assessment of reduction and function(P>0.05).It was concluded that both 3DPS and MIRP can effectively treat the sacroiliac complex injury,and 3DPS can provide an accurate,safe and minimally invasive fixation with shorter operative time and hospital stay. 展开更多
关键词 SACROILIAC complex injury 3D navigation-assisted system PERCUTANEOUS iliosacral SCREW MINIMALLY INVASIVE reconstruction plate
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Synthesis, Crystal Structure, and Fluorescent and Thermal Stability Properties of Two New Cobalt(Ⅱ) Complexes with 2,2’-Bipy as Ligand 预览
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作者 李玉林 杨颖群 +1 位作者 毛芳芳 陈志敏 《结构化学》 SCIE CAS CSCD 2019年第5期769-776,670共9页
Two new cobalt(Ⅱ)complexes[Co2(2,2?-bipy)2(dpa)2(H2O)5]·4H2O(1)and Co(2,2?-bipy)3(SO4)]·7.5H2O(2)have been synthesized with diaphonic acid(H2dpa)and 2,2?-bipyridine(2,2?-bipy)as ligands.In 1,two neighboring... Two new cobalt(Ⅱ)complexes[Co2(2,2?-bipy)2(dpa)2(H2O)5]·4H2O(1)and Co(2,2?-bipy)3(SO4)]·7.5H2O(2)have been synthesized with diaphonic acid(H2dpa)and 2,2?-bipyridine(2,2?-bipy)as ligands.In 1,two neighboring cobalt(Ⅱ)ions are linked together by one bridging diaphonic acid group,forming an asymmetric dinuclear structure.1 crystallizes in triclinic,space group P1 with a=9.825(6),b=13.007(8),c=19.586(1)A,α=80.773(1)o,β=77.065(1)o,γ=85.902(1)o,Mr=431.4,V=2406.5(3)A^3,Dc=1.48 g/cm^3,Z=2,μ(Mo Kα)=0.767 mm-1,F(000)=1112,the final R=0.0379 and wR=0.0862.The central cobalt(Ⅱ)ions in 1 and 2 are coordinated with six atoms,forming distorted octahedral coordination geometry.The fluorescence and thermal stability properties of 1 and 2 are also reported. 展开更多
关键词 cobalt(Ⅱ) complex crystal structure FLUORESCENCE thermal stability
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基于吡啶配合物的合成及表征 预览
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作者 关佳霖 程清蓉 潘志权 《武汉工程大学学报》 CAS 2019年第4期307-310,共4页
为设计和合成新型有机酸配体及其配合物,探索结构与性质之间的关系,通过水热法合成了2个基于吡啶配体的配合物Co[(4,4’-bipy)·4H2O]·(H4L)2·2H2O和Ni[(4,4’-bipy)·4H2O]·(H4L)2·2H2O,配合物的结构通过... 为设计和合成新型有机酸配体及其配合物,探索结构与性质之间的关系,通过水热法合成了2个基于吡啶配体的配合物Co[(4,4’-bipy)·4H2O]·(H4L)2·2H2O和Ni[(4,4’-bipy)·4H2O]·(H4L)2·2H2O,配合物的结构通过红外光谱、元素分析和X-单晶衍射进行了表征。结果表明:2种配合物中的金属离子均采用六配位的模式,金属离子与4,4’-联吡啶形成平行的链结构,链与链之间通过膦酸基团中的氧原子和水分子中的氧原子以氢键的形式连接,形成三维网络结构。这对于金属与配体配位方式的探索具有重要的意义。 展开更多
关键词 配合物 X-射线单晶衍射 三维网络结构 Co[(4 4’-bipy)·4H2O]·(H4L)2·2H2O Ni[(4 4’-bipy)·4H2O]·(H4L)2·2H2O
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A New One-dimensional Complex Assembled by 4-Nitrobenzoic Acid and Bis(imidazol) Ligands:Syntheses, Structures and Theoretical Calculations 预览
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作者 李秀梅 潘亚茹 +2 位作者 刘博 周实 常鹰飞 《结构化学》 SCIE CAS CSCD 2019年第5期783-790,670共9页
A new Zn(Ⅱ)coordination polymer,[Zn(nba)2(mbix)]2n(1,Hnba=4-nitrobenzoic acid,mbix=1,3-bis(imidazol-1-ylmethyl)-benzene),was synthesized and characterized by elemental analyses,IR spectra,TG,fluorescence spectroscopy... A new Zn(Ⅱ)coordination polymer,[Zn(nba)2(mbix)]2n(1,Hnba=4-nitrobenzoic acid,mbix=1,3-bis(imidazol-1-ylmethyl)-benzene),was synthesized and characterized by elemental analyses,IR spectra,TG,fluorescence spectroscopy,single-crystal and powder X-ray diffractions.It belongs to the triclinic system,P1 space group,with a=9.341(2),b=13.029(3),c=23.660(6)A,α=99.603(6)°,β=90.461(6)°,γ=90.597(5)°,V=2838.9(12)?3 and Z=2.It shows one-dimensional chains which are further linked by C–H···O hydrogen bonds andπ-πstacking interactions to yield a three-dimensional supramolecular structure.In addition,the Natural Bond Orbital(NBO)was analyzed in using the PBE0/LANL2DZ method built in Gaussian 09 Program.The calculation results indicated obvious covalent interaction between the coordinated atoms and Zn(Ⅱ)ion. 展开更多
关键词 synthesis crystal structure 4-nitrobenzoic acid Zn(Ⅱ) complex natural BOND ORBITAL
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Manufacturing of High-efficiency Air Filter Paper Using Ultra-fine Fibers 预览
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作者 Yong-Chil Ro Yong-Il Ri Guang-Jin Jong 《造纸与生物质材料:英文版》 2019年第1期17-22,共6页
In this paper,the manufacturing of high-efficiency air filter paper is reported.The air filter paper was produced using ultra-fine fibers and wateroat fibers mercerized by alkali,using an electrospinning apparatus wit... In this paper,the manufacturing of high-efficiency air filter paper is reported.The air filter paper was produced using ultra-fine fibers and wateroat fibers mercerized by alkali,using an electrospinning apparatus with multiple rings.The high efficiency air filter paper has an antibacterial effect after adding a chitosan-copper complex which is harmless to humans.As a result of the measurement,the filtering efficiency of the air filter paper is approximately 99.998%and its antibacterial efficiency is approximately 99.5%. 展开更多
关键词 ultra-fine FIBER wateroat(Zizania latifolia)fiber chitosan-copper complex air filter paper
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一维Zn(Ⅱ)配合物{[Zn(Hpntc)2]·H2O}n的合成、结构及荧光性能研究
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作者 季甲 侯银玲 +2 位作者 韦胜艳 任晓玫 曾瑶 《化学试剂》 CAS 北大核心 2019年第1期84-88,共5页
以3,5-(4-羧酸苯基)-4-氨基-1,2,4-三氮唑为配体,六水合高氯酸锌为金属盐,通过水热合成法构筑了目标配合物。单晶结构解析表明该配合物属于三斜晶系,P-1空间群,单胞参数a=0. 800 79(12) nm,b=1. 136 01(11) nm,c=1. 636 91(16) nm,α=78... 以3,5-(4-羧酸苯基)-4-氨基-1,2,4-三氮唑为配体,六水合高氯酸锌为金属盐,通过水热合成法构筑了目标配合物。单晶结构解析表明该配合物属于三斜晶系,P-1空间群,单胞参数a=0. 800 79(12) nm,b=1. 136 01(11) nm,c=1. 636 91(16) nm,α=78. 070(8)°,β=81. 525(10)°,γ=84. 31(1)°。通过配体桥联,配合物形成一维链结构,再通过分子间氢键形成二维超分子结构。采用元素分析、红外光谱、粉末衍射对该配合物进行了表征,并研究了其室温下的固体荧光和乙醇溶液中的荧光性能。研究表明,配合物具有较强的荧光发射,是一种潜在的荧光材料。 展开更多
关键词 水热合成法 配合物 晶体结构 荧光
[CuI2(BBTP)]n的合成、晶体结构及抑菌活性 预览
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作者 高霞 潘会宾 +2 位作者 乔成芳 刘永亮 张国春 《陕西科技大学学报》 CAS 2019年第3期91-97,共7页
在溶剂热条件下设计并合成了1个结构新颖的功能配合物:[CuI2(BBTP)]n(1,BBTP=1,5-双(苯并三氮唑)戊烷).采用元素分析、X-射线粉末衍射、红外光谱、热分析以及固体荧光光谱等方法对配合物1进行了结构表征和性质研究.利用X-射线单晶衍射... 在溶剂热条件下设计并合成了1个结构新颖的功能配合物:[CuI2(BBTP)]n(1,BBTP=1,5-双(苯并三氮唑)戊烷).采用元素分析、X-射线粉末衍射、红外光谱、热分析以及固体荧光光谱等方法对配合物1进行了结构表征和性质研究.利用X-射线单晶衍射测定了配合物1的晶体结构,晶体属于三斜晶系,空间群为P-1,配体BBTP以μ3-桥联模式连接无机单元[Cu4I4]构成一维有机无机链,进而相邻的一维链又通过π-π作用堆积为二维层状结构,然后相邻的二维层状结构的芳环之间存在的π-π作用进一步使二维层堆积成三维超分子结构.采用菌落直径法研究了配合物1及其BBTP配体对腐皮镰刀真菌的抑菌效果,结果表明:配合物1及其BBTP配体对腐皮镰刀真菌的生长均具有一定的抑制作用. 展开更多
关键词 配合物 铜(I) 1 5-双(苯并三氮唑)戊烷 晶体结构 抑菌活性
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Visual analysis of the evolution and focus in landslide research field
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作者 YANG Jing CHENG Chang-xiu +2 位作者 SONG Chang-qing SHEN Shi NING Li-xin 《山地科学学报:英文版》 SCIE CSCD 2019年第5期991-1004,共14页
This paper analysed the evolution of landslide research and research foci in different countries. The data comprise 3105 landslide SCI articles published between January 1977 and June 2015 from the Web of Science. The... This paper analysed the evolution of landslide research and research foci in different countries. The data comprise 3105 landslide SCI articles published between January 1977 and June 2015 from the Web of Science. The data are extracted under interaction constraints of the journal title, category, and keywords. The complex network method is used for the analysis. First, from the perspective of topics and methods, the evolution is systematically assessed by generating a co-citation network of the articles and a semantic cluster analysis. Second, from the perspective of topics and landsliderelated disasters, the focus in different countries is discussed by generating co-occurrence networks. These networks are the co-occurrence of the countries and keywords, and the co-occurrence of countries and landslide-related disaster phrases. The main conclusions are as follows:(1) landslide susceptibility analysis and methods of machine learning are popular research topics and methods, respectively. The topics change through time, and the article output is influenced by increasing landslide-related disasters, increasing economic losses and casualties, a desire for a more complete and accurate landslide inventory, and the use of effective methods, such as geographical information Science(GIS) and machine learning.(2) The research focus in each country is related with the country-specific disasters or economic costs caused by landslides to some degree. In addition to Italy and the USA, China is the country most commonly affected by landslides, and it should develop its own landslide database and complete in-depth studies of disaster mitigation. 展开更多
关键词 LANDSLIDES COMPLEX network CLUSTER analysis EVOLUTION Research FOCUS
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