检索结果-南通市图书馆

Pancreatic lymphangioma:two case reports from an institutional experience with a rare entity and review of literature

引用

Journal of Pancreatology 2022年第2期5卷 98-109页

作者： alfonso tan-garcia Ser Yee Lee Jen San Wong Thomas W.T.Ho Keng Sin Ng Kiat Hon Tony Lim Division of Pathology Department of Anatomical PathologySingapore General HospitalSingapore Surgical Associates Mount Elizabeth Medical CentreSingapore Department of Hepatopancreatobiliary and Transplant Surgery Singapore General HospitalSingapore Hepatobiliary and Pancreatic Surgery Centre Mount Elizabeth Medical CentreSingapore Digestive Surgical Oncology Department of Diagnostic Imaging Mount Alvernia HospitalSingapore

Pancreatic lymphangiomas are very rare benign cystic lesions that pose a diagnostic dilemma due to their resemblance to other non-neoplastic and neoplastic pancreatic cystic *** such,pancreatic lymphangiomas are frequently diagnosed only after histological examination of the excised *** present 2 cases of pancreatic lymphangioma,determine its prevalence at our institution and perform a detailed review of published literature since *** 1 is a 36-year-old male and case 2 is a 35-year-old female,both of which presented with abdominal *** were the only cases of pancreatic lymphangiomas reported at our institution since *** reviewed 69 cases of pancreatic lymphangiomas from 52 *** affects predominantly females with a median age of 43 and such patients typically present with abdominal pain(58.8%)or are asymptomatic(27.9%).The median size is 8.6 cm,the most common location is the head of pancreas and the most common imaging finding is that of a multilocular *** of patients underwent surgical resection(69.6%).Endoscopic ultrasound-guided fine-needle aspiration features of pancreatic lymphangiomas include chylous cyst fluid,elevated fluid triglyceride levels(15/16 cases)and numerous lymphocytes on *** majority of patients with elevated fluid triglyceride levels(13/15 cases)were managed *** lymphangiomas are rare pancreatic cystic lesions that may be diagnosed preoperatively using a multidisciplinary and multimodal approach involving clinical,radiological,biochemical and cytological features,allowing greater confidence in the selection of patients who can be managed conservatively.

关键词： Case report Cystic Diagnostic features Literature review Lymphangioma management Pancreas Prevalence

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Avian malaria,haematocrit,and body condition in invasive wetland passerines settled in southwestern Spain

引用

Avian Research 2023年第1期14卷 99-107页

作者： Jaime Muriel Luz garcia-Longoria Sergio Magallanes Juan Antonio Ortiz alfonso Marzal Instituto de Investigación en Recursos Cinegéticos(IREC) CSIC-UCLM-JCCMRonda de Toledo 1213005Ciudad RealSpain Universidad de Extremadura Facultad de BiologíaDepartamento de AnatomíaBiología Celular y Zoología Avenida de Elvas s/n06006BadajozSpain Estación Biológica de Donana(EBD-CSIC) Departamento de Ecología de los HumedalesAvda.Américo Vespucio 2641092SevillaSpain Hirundo Bird Ringing Group BadajozSpain Grupo de Investigaciones en Fauna Silvestre Universidad Nacional de San MartínJr.Maynas177722021TarapotoPeru

Avian malaria and related haemosporidian parasites can negatively impact fitness in many *** on the malaria infection and its physiological costs on their avian hosts is heavily skewed toward native passerines,with exotic species ***,introduced species may carry on and spread new pathogens to native species,and play a role on parasite transmission cycle in invaded bird communities as pathogen ***,we molecularly assess the prevalence and diversity of haemosporidian parasites in three introduced wetland passerines(the Red Avadavat Amandava amandava,the Yellow-crowned Bishop Euplectes afer,and the Common Waxbill Estrilda astrild)captured during the same season in southwestern *** also explored the relation between parasite infection,body condition,haematocrit,and uropygial gland *** detected an overall parasite prevalence of 3.55%,where Common Waxbills showed higher prevalence(6.94%)than Red Avadavats(1.51%).None Yellow-crowned Bishops were infected with *** 60%of infections were caused by Leucocytozoon,and about 40%by *** identified four unique lineages of Plasmodium and three of ***,91%of the identified host-parasite interactions represented new host records for these haemosporidian *** infection was not related to body condition,haematocrit,and uropygial gland volume of the wetland *** values varied seasonally among bird ***,haematocrit was positively related to body condition in the Yellow-crowned Bishops,but not in the other *** Avadavats had higher haematocrit levels than Yellow-crowned Bishops,whereas Common Waxbills showed the lower haematocrit *** uropygial gland volume was positively correlated with body condition in all bird *** Waxbills showed higher uropygial gland volumes related to their body size than birds from other two *** outcomes highlight the importance of e

关键词： Avian malaria Exotic species Introduced birds Leucocytozoon Plasmodium Uropygial gland

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Ecological distribution and population structure of Litsea glaucescens(Lauraceae)in the ravines of Sierra Fría and Sierra Laurel,Central Mexico

引用

Journal of Mountain Science 2022年第7期19卷 1945-1960页

作者： Mara Irais FLORES-GALLEGOS Edmundo garcia-MOYA Angelica ROMERO-MANZANARES Mario LUNA-CAVAZOS Martin alfonso MENDOZA-BRISENO Heike VIBRANS Posgrado en Botánica Colegio de PostgraduadosCampus Montecillo.Km 36.5carretera México-TexcocoMontecilloTexcocoEdo.de México56230México Colegio de Postgraduados Campus Veracruz.Carretera Jalapa Veracruz Km 88.5Altamirano91690VeracruzMéxico

Litsea glaucescens Kunth(Mexican bay leaf,laurel)has a wide distribution in Mexico,growing at both riparian and rupicolous environments in the mountainous region of the Central Highlands of the *** Fría-Sierra Laurel is a protected natural area covered by a dry *** Mexican bay leaf is associated with the oak forest,especially on *** species has been considered at risk in recent *** research is focused on analyzing the elements of the environment of the ravines,which are influencing the distribution and establishment of laurel populations in the *** mountainous regions of Aguascalientes were selected,Sierra Fría and Sierra *** ravines of the basin were selected to obtain environmental *** registered were topographic,edaphic,and *** component analysis was used to identify ecological factors associated with the presence of *** bay leaf populations were registered in 10 *** the structural level in the community,29 woody species were registered,Mexican bay leaf had an Importance Value Index of 15.8,ranking 10th among all *** of laurel were classified by size classes(S,individuals with heights ranging from 0 to 20 cm;S,heights ranging from 0.2 to 1.0 m;S,heights between 1 and 2 m with light trace of flowering;S,heights greater than 2 m with flowering greater than 30% of the canopy;and S,individuals with heights greater than 5 m,curved trunk and basal regrowth)to obtain the population *** importance index value for all the species in the riparian community was calculated to the community *** factors that characterized the presence of Mexican bay leaf were a high percentage of rock coverage(90%),less mulch depth,and sandy loam shallow *** that showed higher cation exchange capacity had a higher presence of individuals of the S,S,and Ssize *** Sindividuals were found in shady places with 97% of intercepted *** o

关键词： Dry Forest Ephemeral stream Importance Value Index Mexican bay leaf Population structure Principal Component Analysis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Pre-fire aboveground biomass, estimated from LiDAR, spectral and field inventory data, as a major driver of burn severity in maritime pine (Pinus pinaster) ecosystems

引用

Forest Ecosystems 2022年第2期9卷 234-246页

作者： Jose Manuel Fernandez-Guisuraga Susana Suarez-Seoane Paulo MFernandes Victor Fernandez-garcia alfonso Fernandez-Manso Carmen Quintano Leonor Calvo Area of Ecology Department of Biodiversity and Environmental ManagementFaculty of Biological and Environmental SciencesUniversity of Leon24071LeonSpain Centro de Investigacao e de Tecnologias Agroambientais e Biologicas Universidade de Tras-os-Montes e Alto Douro5000-801Vila RealPortugal Department of Organisms and Systems Biology(Ecology Unit)and Research Unit of Biodiversity(IMIB UO-CSIC-PA)University of OviedoOviedoMieresSpain Agrarian Science and Engineering Department School of Agricultural and Forestry EngineeringUniversity of Leon24400PonferradaSpain Electronic Technology Department School of Industrial EngineeringUniversity of Valladolid47011ValladolidSpain Sustainable Forest Management Research Institute University of Valladolid-Spanish National Institute for Agriculture and Food Research and Technology(INIA)34004PalenciaSpain

Background:The characterization of surface and canopy fuel loadings in fire-prone pine ecosystems is critical for understanding fire behavior and anticipating the most harmful ecological effects of ***,the joint consideration of both overstory and understory strata in burn severity assessments is often *** aim of this work was to assess the role of total,overstory and understory pre-fire aboveground biomass(AGB),estimated by means of airborne Light Detection and Ranging(LiDAR)and Landsat data,as drivers of burn severity in a megafire occurred in a pine ecosystem dominated by Pinus pinaster *** the western Mediterranean ***:Total and overstory AGB were more accurately estimated(R^(2) equal to 0.72 and 0.68,respectively)from LiDAR and spectral data than understory AGB(R^(2)=0.26).Density and height percentile LiDAR metrics for several strata were found to be important predictors of *** severity responded markedly and non-linearly to total(R^(2)=0.60)and overstory(R ^(2)=0.53)AGB,whereas the relationship with understory AGB was weaker(R ^(2)=0.21).Nevertheless,the overstory plus understory AGB contribution led to the highest ability to predict burn severity(RMSE=122.46 in dNBR scale),instead of the joint consideration as total AGB(RMSE=158.41).Conclusions:This study novelty evaluated the potential of pre-fire AGB,as a vegetation biophysical property derived from LiDAR,spectral and field plot inventory data,for predicting burn severity,separating the contri-bution of the fuel loads in the understory and overstory strata in Pinus pinaster *** evidenced relationships between burn severity and pre-fire AGB distribution in Pinus pinaster stands would allow the implementation of threshold criteria to support decision making in fuel treatments designed to minimize crown fire hazard.

关键词： Aboveground biomass Burn severity Landsat LiDAR Pinus pinaster

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Detection of Entamoeba histolytica in experimentally induced amoebic liver abscess:comparison of three staining methods

引用

Asian Pacific Journal of Tropical Biomedicine 2012年第1期2卷 61-65页

作者： tan Zi Ning Wong Weng Kin Shaymoli Mustafa Arefuddin Ahmed Rahmah Noordin tan Gim Cheong Olivos-garcia alfonso Lim Boon Huat School of Health Sciences Universiti Sains Malaysia Institute for Research in Molecular Medicine Universiti Sains Malaysia Department of Medical Microbiology ParasitologySchool of Medical SciencesUniversiti Sains Malaysia Departamento de Medicina Experimental Facultad de Medicina.Universidad National Autonoma de Mexico

Objective:To compare the efficacy of three different tissue stains,namely haematoxylin and eosin(H&E),periodic-acid Schiff(PAS)and immunohistochemical(1HC)stains for detection of Entamoeba histolytica(***)trophozoites in abscessed liver tissues of ***:Amoebic liver abscess was experimentally induced in a hamster by injecting 1×10~6of axenically cultured virulent *** trophozoites(HM1-IMSS strain)into the portal *** a week post-inoculation,the hamster was sacrificed and the liver tissue sections were stained with H&E,PAS and IHC stains to delect the amoebic ***:The three stains revealed tissue necrosis and amoebic trophozoites,but with varying clarity.H&E and PAS stained the trophozoites pink and magenta,respectively,however it was difficult to differentiate the stained trophozoites from the macrophages because of their similarity in size and *** the other hand,IHC stain revealed distinct brown appearance of the trophozoites in the infected liver ***:It can be concluded that out of the three *** is the best for identification of *** trophozoites in tissue sections.

关键词： Entamoeba histolytica Amoebic liver abscess H&E PAS IHC Trophozoite

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Planetary Gear Profile Modification Design Based on Load Sharing Modelling

引用

Chinese Journal of Mechanical Engineering 2015年第4期28卷 810-820页

作者： IGLESIAS Miguel FERNáNDEZ DEL RINCóN alfonso DE-JUAN Ana Magdalena garcia Pablo DIEZ Alberto VIADERO Fernando Mechanical Engineering Research Group University of Cantabria

In order to satisfy the increasing demand on high performance planetary transmissions, an important line of research is focused on the understanding of some of the underlying phenomena involved in this mechanical system. Through the development of models capable of reproduce the system behavior, research in this area contributes to improve gear transmission insight, helping developing better maintenance practices and more efficient design processes. A planetary gear model used for the design of profile modifications ratio based on the levelling of the load sharing ratio is presented. The gear profile geometry definition, following a vectorial approach that mimics the real cutting process of gears, is thoroughly described. Teeth undercutting and hypotrochoid definition are implicitly considered, and a procedure for the incorporation of a rounding arc at the tooth tip in order to deal with corner contacts is described. A procedure for the modeling of profile deviations is presented, which can be used for the introduction of both manufacturing errors and designed profile modifications. An easy and flexible implementation of the profile deviation within the planetary model is accomplished based on the geometric overlapping. The contact force calculation and dynamic implementation used in the model are also introduced, and parameters from a real transmission for agricultural applications are presented for the application example. A set of reliefs is designed based on the levelling of the load sharing ratio for the example transmission, and finally some other important dynamic factors of the transmission are analyzed to assess the changes in the dynamic behavior with respect to the non-modified case. Thus, the main innovative aspect of the proposed planetary transmission model is the capacity of providing a simulated load sharing ratio which serves as design variable for the calculation of the tooth profile modifications.

关键词： transmission planetary gear load sharing relief profile modification

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Sarcomatoid carcinoma of the jejunum presenting as obscure gastrointestinal bleeding in a patient with a history of gliosarcoma

引用

Gastroenterology Report 2014年第2期2卷 150-153页

作者： Nidia alfonso Puentes Carmen Jimenez-Alfaro Larrazabal Maria Isabel garcia Higuera Clinical Neurophysiology Department Hospital Universitario de BurgosSpain Department of Internal Medicine Hospital Universitario de BurgosSpain Department of Pathology Hospital Universitario de BurgosSpain

Small bowel malignant tumors are rare and sarcomatoid carcinomas have rarely been reported at this *** report a 56-year-old woman,with history of an excised gliosarcoma,who presented with recurrent obscure gastrointestinal *** underwent endoscopy and colonoscopy,which failed to identify the cause of the *** abdominal computed tomography scan located a tumor in the small *** revealed a jejunal sarcomatoid *** developed tumor recurrence and multiple liver metastases shortly after *** is required for accurate *** carcinoma is a rare cause of obscure gastrointestinal bleeding,which is associated with a poor prognosis.

关键词： obscure gastrointestinal bleeding small bowel tumors sarcomatoid carcinoma

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Non-redundant Contribution of the Plastidial FAD8 ω-3 Desatumse to Glycerolipid Unsatumtion at Different Temperatures in Arabidopsis

引用

Molecular Plant 2015年第11期8卷 1599-1611页

作者： Angela Roman Maria L. Hernandez Angel Soria-garcia Sara Lopez-Gomollon Beatriz Lagunas Rafael Picorel Jose Manuel Martinez-Rivas Miguel alfonso Estacion Experimental de Aula Dei (EEAD-CSIC) Avda. Montanana 1005 50059 Zaragoza Spain Instituto de la Grasa (IG-CSIC) Campus Universidad Pablo de Olavide Building 46 Ctra. Utrera kin 1 41013 Seville Spain

Plastidial ω-3 desaturase FAD7 is a major contributor to trienoic fatty acid biosynthesis in the leaves of Arabidopsis plants. However, the precise contribution of the other plastidial ω-3 desaturase, FAD8, is poorly understood. Fatty acid and lipid analysis of several ω-3 desaturase mutants, including two insertion lines of AtFAD7 and AtFAD8, showed that FAD8 partially compensated the disruption of the AtFAD7 gene at 22℃, indicating that FAD8 was active at this growth temperature, contrasting to previous observations that circumscribed the FAD8 activity at low temperatures. Our data revealed that FAD8 had a higher selectivity for 18：2 acyl-lipid substrates and a higher preference for lipids other than galactolipids, particularly phosphatidylglycerol, at any of the temperatures studied. Differences in the mechanism controlling AtFAD7 and AtFAD8 gene expression at different temperatures were also detected. Confocal microscopy and biochemical analysis of FAD8-YFP over-expressing lines confirmed the chloroplast envelope localization of FAD8. Co-localization experiments suggested that FAD8 and FAD7 might be located in close vicinity in the envelope membrane. FAD8-YFP over-expressing lines showed a specific increase in 18：3 fatty acids at 22℃. Together, these results indicate that the function of both plastidial ω-3 desaturases is coordinated in a non-redundant manner.

关键词： Arabidopsis thaliana glycerolipid fatty acid FAD7 FAD8 plastid

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Repeatability of in-vitro optical quality measurements of intraocular lenses with a deflectometry technique effect of the toricity

引用

International Journal of Ophthalmology(English edition) 2018年第7期11卷 1139-1144页

作者： Teresa Ferrer-Blasco Alberto Dominguez-Vicent Santiago garcia-Lazaro Maria Amparo Diez-Ajenjo Jose F.alfonso Jose J.Esteve-Taboada Department of Optics and Optometry and Visual Science University of Valencia Valencia 46100 Spain Clinica Optometrica Fundacio Lluis Alcanyis Universitat de Valencia Valencia 46020 Spain Surgery Department Fernandez-Vega Ophthalmological Institute Oviedo 33012 Spain School of Medicine University of Oviedo Oviedo 33006 Spain

AIM： To evaluate the repeatability of an optical device for measuring the Zernike coefficients of toric intraocular lenses（IOLs） and assess whether its toricity has any impact in its repeatability. METHODS： An experienced technician used the NIMO TR1504 to measure the Zernike coefficients 30 times for an aperture of 4.50 mm for all lenses included. The IOLs included were divided into two group： toric and nontoric ones. The cylindrical powers of the toric lenses included in the present study were 1.00, 1.50, 2.25, 3.00 and 3.75 D. Finally, the repeatability of the NIMO TR1504 was described in terms of within subject standard deviation（Sw） and repeatability limit. RESULTS： The Sw was smaller than 0.011 μm for both lens groups and all Zernike coefficients, and the difference between both groups was smaller than 0.004 μm for all Zernike coefficients. Regarding the repeatability limit, this value was smaller than 0.025 μm for the toric lens group, and smaller than 0.031 μm for the non-toric lens one for all Zernike coefficients. Furthermore, the maximum difference between both lens groups was 0.010 μm. CONCLUSION： The repeatability of the NIMO TR1504 to measure the optical quality is high and independent of the lens toricity. These results reflect that this system is robust and could be used to measure the in-vitro optical quality of either toric or non-toric IOLs.

关键词： in-vitro measurements optical quality intraocular lens repeatability

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Entamoeba histolytica acetyl-CoA synthetase:biomarker of acute amoebic liver abscess

引用

Asian Pacific Journal of Tropical Biomedicine 2014年第6期4卷 446-450页

作者： Lim Boon Huat alfonso Olivos garcia tan Zi Ning Wong Weng Kin Rahmah Noordin Siti shafiqah Anaqi Azham Lee zhi Jie Guee Cher Ching Foo Phiaw Chong Pim Chau Dam Biomedicine Programme.School of Health Sciences Universiti Sains Malaysia Departmento de Medicina Experimental Facultad de MedicinaUniversidad Nacional Autonoma de Mexico Department of Medicine Allianze University College of Medical Sciences Institute for Research in Molecular Medicine 11800 University Sains Malaysia

Objective:To characterize the Entamoeba histolytica(***)antigen(s)recognized by moribound amoebic liver abscess ***:Crude soluble antigen of *** was probed with sera of moribund hamsters in 1D-and 2D-Westem blot *** antigenic protein was then sent for tandem mass spectrometry *** corresponding gene was cloned and expressed in Escherichia coli BL21-AI to produce the recombinant *** ADP-forming acetyl-CoA synthetase(EhACS)protein.A customised ELISA was developed to evaluate the sensitivity and specificity of the recombinant ***:A^75 kDa protein band with a pl value of 5.91-6.5 was found to be antigenic;and not detected by sera of hamsters in the control *** mass spectrometry analysis revealed the protein to be the 77 kDa *** ADP-forming acetyl-CoA synthetase(EhACS).The customised ELISA results revealed 100%sensitivity and 100%specificity when tested against infected(n=31)and control group hamsters(n=5)serum samples,***:This rinding suggested the significant role of EhACS as a biomarker for moribund hamsters with acute amoebic liver abscess(ALA)*** is deemed pertinent that future studies explore the potential roles of EhACS in better understanding the pathogenesis of ALA;and in the development of vaccine and diagnostic tests to control ALA in human populations.

关键词： Entamoeba histolytica Amoebic liver abscess Biomarker Acetyl-CoA synthetase Recombinant EhACS Western blot

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：