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Genetic diversity,phylogenetic position and morphometric analysis of Astacus colchicus(Decapoda,Astacidae):a new insight into Eastern European crayfish fauna

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Integrative Zoology 2021年第3期16卷 368-378页

作者： Martin BLÁHA JiríPATOKA bella JAPOSHVILI Marek LET MilošBURˇICˇ Antonín KOUBA Levan MUMlaDZE Faculty of Fisheries and Protection of Waters South Bohemian Research Center of Aquaculture and Biodiversity of HydrocenosesUniversity of South Bohemia in CˇeskéBudeˇjoviceVodnˇanyCzech Republic Department of Zoology and Fisheries Faculty of AgrobiologyFood and Natural ResourcesCzech University of Life Sciences PraguePrahaCzech Republic Institute of Zoology of Ilia State University TbilisiGeorgia

The phylogeny of European crayfish fauna,especially with respect to Eastern European species,is still far from being completely *** fill this gap,we analyzed most of the European crayfish species focusing on the phylogenetic position of the endemic crayfish Astacus colchicus,inhabiting *** mitochondrial and one nuclear marker were used to study evolutionary relationships among European crayfish species,resulting in the unique phylogenetic position of *** indicating independent species status to *** analyses revealed a deep molecular divergence of *** in comparison to ***(6.5–10.9%in mtDNA and 1.1%in nDNA)as well as to Pontastacus leptodactylus and ***(5.5–10.0%in mtDNA and 1.4–2.4%in nDNA).Absent ventral process on second male pleopod and abdominal somites II and III with pleura rounded lacking prominent spines clearly indicate taxonomic assignment to the genus Astacus;however,the species is distributed almost in the middle of Ponto-Caspian area typical by occurrence of the genus *** morphological indices linked to head length,carapace,and total body length and width were found to demonstrate apparent differences between *** and *** this study provides a novel insight into European crayfish phylogeography,we also point out the gaps in comprehensive study of the *** species complex,which could reveal details about the potential species status of particular species and subspecies within this genus.

关键词： 12S rRNA 16S rRNA cytochrome c oxidase histone H3 Ponto-Caspian crayfish

Rheology Study of Suspension Formed by Different Nano-size Y-TZP

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Journal of Materials Science & Technology 1997年第4期13卷 348-350页

作者： Sun, J Gao, la Guo, JK CHINESE ACAD SCI SHANGHAI INST CERAMSHANGHAI 200050PEOPLES R CHINA

The rheological properties of slurries formed by different nano-size Y-TZP have been studied. The viscosity is sensitive to solid loading especially for high solid content level. The dispersant NH(4)PAA can improve the flowability efficiently. The smaller ceramic particles need to adsorb more dispersant to the flowability. Under the same solid content, the smaller the particles, the higher the viscosity of its slurry.

关键词： Rheology

Flexible Transparent Near-Infrared Photodetector Based on 2D Ti_(3)C_(2) MXene-Te Van Der Waals Heterostructures

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Chinese Journal of Chemistry 2021年第8期39卷 2141-2146页

作者： Chuqiao Hu la Li Guozhen Shen Key laboratory for Superlattices and Microstructures Institute of SemiconductorsChinese Academy of Sciences&Center of Materials Science and Optoelectronic EngineeringUniversity of Chinese Academy of SciencesBeijing 100083China

Ti_(3)C_(2) MXe ne servi ng as superior electrical con ductors prese nts more specific performa nee such as tran spar ency,con ductivity tha n gold(Au),and even could form a heterostructure with active materials of the functional ***,a Ti_(3)C_(2) MXene-Te microplate van der Waals heterostructure based tran spare nt near-i nfrared photodetector(PD)is exploited.

关键词： Semiconductors Ti_(3)C_(2)T_(x)MXene Transparent electronics Tellurium Flexible near infrared photodetector Conducting materials

Thoracoscopy in Cameroon: Indications, Technics and Short Term Results

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Surgical Science 2024年第4期15卷 278-288页

作者： Guy Aristide Bang Richard II Mbele Fabrice Stephane Arroye Betou Arlette Joelle Moukitek Banaken amos bella Ela Charles Mve Mvondo Arthur Essomba Department of Surgery and Specialities Faculty of Medicine and Biomedical Sciences Yaound&#233 I University Yaound&#233 Cameroon Department of Surgery and Specialities Yaound&#233 Teaching Hospital Yaound&#233 Cameroon General Surgery Service Mvog-Ada District Hospital Yaound&#233 Cameroon Department of Cardiothoracic and Vascular Surgery Laquintinie Hospital Douala Cameroon Department of Cardiothoracic and Vascular Surgery Yaound&#233 General Hospital Yaound&#233 Cameroon Cardiac Center Shisong St. Elizabeth Catholic General Hospital Shisong Kumbo Cameroon

Introduction: Thoracoscopy is a video-assisted surgical approach that mirrors the techniques used in thoracotomy. Our aim is to map the current state of thoracoscopy practice in Cameroon’s hospitals. Methods: This was a descriptive study that collected both retrospective and prospective data over 57 months across four hospitals in Cameroon. It included 13 patients and focused on variables such as socio-demographic factors, clinical profiles, surgical procedures, and postoperative follow-up. Results: Thirteen patients, predominantly male (84.6%, n = 11), with a mean age of 37.5 ± 16 years, were enrolled. Alcohol use (61.5%) and smoking (38.5%) were the most common past histories. The major complaints were dyspnea (84.6%) and chest pain (58.3%). The primary surgical procedure was clot-free thoracoscopy in 30.8% of cases, mainly for persistent hemothorax (41.8%). Most surgeries were elective (76.9%) and performed under general anesthesia with selective intubation (61.5%). The most common approach was single-port thoracoscopy (U-VATS) (76.9%), with no reported difficulties;however, one intraoperative incident occurred and was successfully treated. Drainage was performed systematically in all patients, and one case required conversion to open surgery. Postoperative complications were minor (Clavien-Dindo grade I) and mainly consisted of pain, with a mortality rate of 15.4%. No significant association was found between risk factors and the occurrence of complications or postoperative mortality. Conclusion: Thoracoscopy, a novel approach in our context, primarily focuses on minor thoracic surgeries.

关键词： Thoracoscopy Single-Port Hemothorax Cameroon

Spin dynamics of the E_(8) particles

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Science Bulletin 2024年第19期69卷 2974-2977页

作者： Xiao Wang Konrad Puzniak Karin Schmalzl Christian Balz Masaaki Matsuda Akira Okutani Masayuki Hagiwara Jie Ma Jianda Wu bella lake Tsung-Dao Lee Institute Shanghai Jiao Tong UniversityShanghai 201210China Helmholtz-Zentrum Berlin für Materialien und Energie GmbH Berlin D-14109Germany Institut für Festkörperphysik Technische Universität BerlinBerlin D-10623Germany Jülich Centre for Neutron Science JCNS Forschungszentrum Jülich GmbHOutstation at ILLGrenoble 38042France ISIS Neutron and Muon Source STFC Rutherford Appleton LaboratoryDidcot OX110QXUK Neutron Scattering Division Oak Ridge National LaboratoryOak Ridge 37831USA Center for Advanced High Magnetic Field Science Graduate School of ScienceOsaka UniversityOsaka 560-0043Japan School of Physics&Astronomy Shanghai Jiao Tong UniversityShanghai 200240China Collaborative Innovation Center of Advanced Microstructures Nanjing UniversityNanjing 210093China Shanghai Branch Hefei National LaboratoryShanghai 201315China

Unlike the classical phase transition driven by thermal fluctuations,the quantum phase transition arises at zero temperature when the system is tuned by a non-thermal parameter[1].For a continuous quantum phase transi... 详细信息

关键词： quantum transition symmetry

On the role of hemodynamics in predicting rupture of the abdominal aortic aneurysm

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2021年第12期22卷 957-978页

作者： Maria Antonietta BONIFORTI Lorenzo DI bella Roberto MAGINI Department of Civil Buildingand Environmental EngineeringSapienza UniversityRome 00184Italy

Hemodynamics plays a crucial role in the growth of an abdominal aortic aneurysm(AAA)and its possible *** to the serious consequences that arise from the aneurysm rupture,the ability to predict its evolution and the need for surgery are of primary importance in the medical ***,the presence of intraluminal thrombus(ILT)strongly affects the evolution of the *** this study,we analyzed the influence of hemodynamics on the growth and possible rupture of *** investigations of pulsatile non-Newtonian blood flow were performed in six patient-specific AAAs reconstructed from diagnostic images,having different sizes and shapes,and with or without *** shear stress and vorticity distribution in the bulge and their evolution during the cardiac cycle were *** results indicate that blood flow dynamics acts synergistically with atherosclerotic degeneration in the development of the *** high surface complexity and tortuosity of the aneurysms significantly affect the blood motion,and the presence of inflection in the aneurysm centerline has a noticeable effect on the vortex *** between regions of slow recirculating flows,low values of time-averaged wall shear stress,high values of oscillatory shear index,and zones of ILT deposition were *** the absence of ILT,possible thrombus accumulation areas and consequent aneurysm growth were *** findings of this study highlight the importance of hemodynamics in assessing the vulnerability of the aortic wall and underline the crucial role of patient-specific investigations in predicting the rupture of individual aneurysms.

关键词： Hemodynamics Computational fluid dynamics Wall shear stress Vortex dynamics Abdominal aortic aneurysm(AAA) Patient-specific modelling

ON A THEOREM OF BERNSTEIN AND ITS APPLICATIONS TO WEIGHTED MINIMAX SERIES

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Journal of Computational Mathematics 1998年第6期16卷 509-520页

作者： Francisco Perez Acosta(Departamento de Analisis Matematico, Universidad de la laguna, la laguna 38271,Canary Islands, Spain) Univ la laguna Dept Anal Matemat E-38271 La Laguna Canary Isl Spain

In this paper, some results about approximation in a norm S induced by the minimax series are studied. Then a Bernstein-type theorem for the norm S is established. Finally the Bernstein theorem is applied to prove the... 详细信息

关键词： Approximation theory polynomials Bernstein theorem minimax series.

Invasive Carassius carp in Georgia： Current state of knowledge and future perspectives

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Current Zoology 2013年第6期59卷 732-739页

作者： bella JAPOSHVILI Levan MUMlaDZE Fahrettin KUCUK Institute of Zoology Ilia State University Kakutsa Cholokashvili st. 3/4 0162 Tbilisi Georgia Institute of Ecology Ilia State University Kakutsa Cholokashvili st. 3/4 0162 Tbilisi Georgia and Invertebrate Research Centre (IRC) Tbilisi Georgia. Agladze st. 26 0119 Suleyman Demirel University Egirdir Fisheries Faculty 32500 Egirdir Isparta Turkey

In Georgia, crucian carp Carassius carassius （Linnaeus, 1758） was known from only one locality after Kessler＇s record （1877-1878） with no new findings until 1985. Since then C. carassius rapidly and simultaneously invaded almost all water bodies of Georgia. In 2004, it was for the first time noted that this invasive Carassius sp. could not be a C. Carassius, but was a form of Carassius gibelio （Bloch, 1792）. However no further data is available about this invasive species in Georgia. The aim of the present study was to investigate taxonomic status of Carassius sp. in Georgia using mtDNA phylogenetic analyses and mor- phometrie study of truss network system. Genetic analysis revealed that invasive Carassius sp. is closely related to the C. gibelio from Turkey and other countries. In contrast, morphometrically Carassius sp. from Georgia can be easily differentiated from those of Turkey indicating high intraspecific variability. This is the first time discussion on the current knowledge of the present distribution of invasive carp in Georgia with identifying current problems and future research directions needed.

关键词： Carassius carp Genetic Georgia Invasion Morphometric

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腔镜微创食管癌切除术的学习过程分析

中华胃肠外科杂志 2012年第9期15卷 918-921页

作者：谢绚傅剑华王军业张旭罗孔嘉杨富 amos Ela bella 李小海华南肿瘤学国家重点实验室、中山大学肿瘤防治中心胸科广州510060

目的总结腔镜微创食管癌切除术（MIE）的学习过程。方法选取同一组医生连续完成的MIE手术100例，按手术时间顺序分为3组：第1、2组各25例行胸腔镜并常规开腹手术，第3组50例行胸腹腔镜手术．分别记录手术时间、出血量、正常结构保护及... 详细信息

目的总结腔镜微创食管癌切除术（MIE）的学习过程。方法选取同一组医生连续完成的MIE手术100例，按手术时间顺序分为3组：第1、2组各25例行胸腔镜并常规开腹手术，第3组50例行胸腹腔镜手术．分别记录手术时间、出血量、正常结构保护及并发症发生情况、术后ICU观察时间、住院时间、术后肿瘤病理及淋巴结清扫情况等临床资料，比较各组之间的差异。结果全组中96例患者顺利完成MIE，4例患者中转开胸，无中转开腹。中位手术时间310min，中位失血量200ml，中位清扫淋巴结22枚，总体并发症发生率50％。第1组与第2组比较，在保留奇静脉弓（P=0．010）、保留支气管动静脉（P=0．038）及左侧喉返神经胸段术中暴露率（P=0．048）方面的差异有统计学意义。前50例与后50例比较，在胸部手术时间（P=0．000）、失血量（P=0．025）、保留奇静脉弓（P=0．001）、保留支气管动静脉（P=0．000）、胸野淋巴结清扫（P=0．022）、左喉返神经链淋巴结清扫（P=0．000）及该神经起始部术中暴露率（P=0．002）方面的差异有统计学意义。结论MIE学习过程较长．应循序渐进。随着经验的积累和手术技巧的提升．MIE将逐渐显示其独特的优势并替代传统开胸食管癌切除术。

关键词：食管肿瘤微创外科食管切除术学习曲线