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Fungal Diversity 2017年第5期86卷 1-594页

作者： Nalin N.Wijayawardene Kevin D.Hyde Kunhiraman C.Rajeshkumar David L.Hawksworth Hugo Madrid Paul M.Kirk Uwe Braun Rajshree V.Singh Pedro W.Crous Martin Kukwa Robert Lücking Cletus P.Kurtzman Andrey Yurkov Danny Haelewaters Andre´Aptroot H.Thorsten Lumbsch Einar Timdal Damien Ertz Javier Etayo Alan J.L.Phillips Johannes Z.Groenewald Moslem Papizadeh Laura Selbmann Monika C.Dayarathne Gothamie Weerakoon E.B.Gareth Jones Satinee Suetrong Qing Tian Rafael F.Castanda-Ruiz Ali H.Bahkali Ka-Lai Pang Kazuaki Tanaka Dong Qin Dai Jariya Sakayaroj Martina Hujslová Lorenzo Lombard Belle D.Shenoy Ave Suija Sajeewa S.N.Maharachchikumbura Kasun M.Thambugala Dhanushka N.Wanasinghe Bharati O.Sharma Subhash Gaikwad Gargee Pandit Laura Zucconi Silvano Onofri Eleonora Egidi Huzefa A.Raja Rampai Kodsueb Marcela E.S.Caceres Sergio Perez-Ortega Patrícia O.Fiuza Josiane Santana Monteiro Larissa N.Vasilyeva Roger G.Shivas Maria Prieto Mats Wedin Ibai Olariaga Adebola Azeez Lateef Yamini Agrawal Seyed Abolhassan Shahzadeh Fazeli Mohammad Ali Amoozegar Guo Zhu Zhao Walter P.Pfliegler Gunjan Sharma Magdalena Oset mohamed a.abdel-wahab Susumu Takamatsu Konstanze Bensch Nimali Indeewari de Silva AndréDe Kesel Anuruddha Karunarathna Saranyaphat Boonmee Donald H.Pfister Yong-Zhong Lu Zong-Long Luo Nattawut Boonyuen Dinushani A.Daranagama Indunil C.Senanayake Subashini C.Jayasiri Milan C.Samarakoon Xiang-Yu Zeng Mingkwan Doilom Luis Quijada Sillma Rampadarath Gabriela Heredia Asha J.Dissanayake Ruvishika S.Jayawardana Rekhani H.Perera Li Zhou Tang Chayanard Phukhamsakda Margarita Hernańdez-Restrepo Xiaoya Ma Saowaluck Tibpromma Luis F.P.Gusmao Darshani Weerahewa Samantha C.Karunarathna Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of ScienceKunming 650201YunnanPeople’s Republic of China Center of Excellence in Fungal Research Mae Fah Luang UniversityChiang Rai 57100Thailand World Agroforestry Centre East and Central AsiaKunming 650201YunnanPeople’s Republic of China Mushroom Research Foundation 128 M.3 Ban Pa Deng T.Pa PaeA.Mae TaengChiang Mai 50150Thailand National Fungal Culture Collection of India(NFCCI) Biodiversity and Palaeobiology(Fungi)GroupAgharkar Research InstitutePuneMaharashtra 411004India Royal Botanic Gardens KewRichmondSurrey TW93DSUK Department of Life Sciences The Natural History MuseumCromwell RoadLondon SW75BDUK Jilin Agricultural University Changchun 130118JilinPeople’s Republic of China Centro de Geno´mica y Bioinforma´tica Facultad de CienciasUniversidad Mayor de ChileCamino La Pira´mide 5750HuechurabaSantiagoChile Martin-Luther-Universita¨t Institut fu¨r BiologieBereich Geobotanik und Botanischer GartenHerbariumNeuwerk 2106099 Halle(Saale)Germany Westerdijk Fungal Biodiversity Institute Uppsalalaan 83584 CT UtrechtThe Netherlands Department of Plant Taxonomy and Nature Conservation Faculty of BiologyUniversity of Gdan´skWita Stwosza 5980-308 Gdan´skPoland Botanic Garden and Botanical Museum Königin-Luise-Str.6-814195 BerlinGermany Mycotoxin Prevention and Applied Microbiology Research Unit National Center for Agricultural Utilization ResearchAgricultural Research ServiceU.S.Department of AgriculturePeoriaIL 61604USA Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures Inhoffenstraße 7B38124 BrunswickGermany Farlow Reference Library and Herbarium of Cryptogamic Botany Harvard University22 Divinity AvenueCambridgeMA 02138USA Department of Organismic and Evolutionary Biology Harvard University22 Divinity AvenueCambridgeMA 02138USA ABL Herbarium G.v.d.Veenstraat 1073762 XK SoestThe Netherlands Science&Education The Field Museum1400

Knowledge of the relationships and thus the classification of fungi,has developed rapidly with increasingly widespread use of molecular techniques,over the past 10–15 years,and continues to *** genera have been found to be polyphyletic,and their generic concepts have subsequently been *** names have thus been introduced for species which are phylogenetically distinct from the type species of particular *** ending of the separate naming of morphs of the same species in 2011,has also caused changes in fungal generic *** order to facilitate access to all important changes,it was desirable to compile these in a single *** present article provides a list of generic names of Ascomycota(approximately 6500 accepted names published to the end of 2016),including those which are *** and summaries of the changes since the last edition of‘Ainsworth&Bisby’s Dictionary of the Fungi’in 2008 are *** notes include the number of accepted species,classification,type species(with location of the type material),culture availability,life-styles,distribution,and selected publications that have appeared since *** work is intended to provide the foundation for updating the ascomycete component of the"Without prejudice list of generic names of Fungi"published in 2013,which will be developed into a list of protected generic *** will be subjected to the XIXth International Botanical Congress in Shenzhen in July 2017 agreeing to a modification in the rules relating to protected lists,and scrutiny by procedures determined by the Nomenclature Committee for Fungi(NCF).The previously invalidly published generic names Barriopsis,Collophora(as Collophorina),Cryomyces,Dematiopleospora,Heterospora(as Heterosporicola),Lithophila,Palmomyces(as Palmaria)and Saxomyces are validated,as are two previously invalid family names,Bartaliniaceae and *** species of Lalaria,which were invalidly published are trans

关键词： Article 59 Classification One name Pleomorphic fungi Taxonomy

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Privacy-preserved learning from non-i.i.d data in fog-assisted IoT:A federated learning approach

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Digital Communications and Networks 2024年第2期10卷 404-415页

作者： mohamed abdel-Basset Hossam Hawash Nour Moustafa Imran Razzak mohamed Abd Elfattah Faculty of Computers and Informatics Zagazig UniversityZagazigSharqiyah44519Egypt School of Engineering and Information Technology University of New South Wales@ADFACanberraACT2600Australia Deakin University Geelong Waurn Ponds CampusAustralia Computer Science Department Misr Higher Institute for Commerce and ComputersMansoura35511Egypt

With the prevalence of the Internet of Things(IoT)systems,smart cities comprise complex networks,including sensors,actuators,appliances,and cyber *** complexity and heterogeneity of smart cities have become vulnerable to sophisticated cyber-attacks,especially privacy-related attacks such as inference and data poisoning *** Learning(FL)has been regarded as a hopeful method to enable distributed learning with privacypreserved intelligence in IoT *** though the significance of developing privacy-preserving FL has drawn as a great research interest,the current research only concentrates on FL with independent identically distributed(i.i.d)data and few studies have addressed the non-i.i.d *** is known to be vulnerable to Generative Adversarial Network(GAN)attacks,where an adversary can presume to act as a contributor participating in the training process to acquire the private data of other *** paper proposes an innovative Privacy Protection-based Federated Deep Learning(PP-FDL)framework,which accomplishes data protection against privacy-related GAN attacks,along with high classification rates from non-i.i.d ***-FDL is designed to enable fog nodes to cooperate to train the FDL model in a way that ensures contributors have no access to the data of each other,where class probabilities are protected utilizing a private identifier generated for each *** PP-FDL framework is evaluated for image classification using simple convolutional networks which are trained using MNIST and CIFAR-10 *** empirical results have revealed that PF-DFL can achieve data protection and the framework outperforms the other three state-of-the-art models with 3%–8%as accuracy improvements.

关键词： Privacy preservation Federated learning Deep learning Fog computing Smart cities

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Mitochondrial DNA-Based Identification of Developmental Stages and Empty Puparia of Forensically Important Flies(Diptera)in Egypt

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Journal of Forensic Science and Medicine 2018年第3期4卷 129-134页

作者： Hedayat a.abdel Ghaffar Marie Z.Moftah Alexandre Favereaux mohamed Swidan Omar Shalaby Sara El Ramah Reda Gamal Department of Zoology Faculty of ScienceAlexandria University department of Life Science University of Bordeauxinterdisciplinary Institute of Neuroscience UMR 5297CNRSBordeauxFrance department of Biology and Geology Faculty of EducationAlexandria UniversityAlexandriaEgypt department of Life Science Faculty of BiologyTechnische Universitat DresdenDresdenGermany

Relying on morphology in the estimation of postmortem intervals is not always accurate for all life phases of flies,especially for immature *** present study demonstrates the application of cytochrome oxidase I sequences,a partial mitochondrial(mt)gene region,to differentiate forensically important flies in Alexandria,***-three adult flies,larvae,and pupae were collected from rabbit *** were used for *** analysis revealed no significant intraspecific divergence in Diptera ***,a neighbor-coining tree using the Kimura 2-parameter model illustrated reciprocal morphology between *** represented five species,four genera,four subfamilies,two families,and one *** herein identify five different species,Chrysomya albiceps,Chrysomya megacephala,Calliphora vicina,Lucilia sericata,and Ophyra capensis,using mt DNA as a species-specific marker for identification in a local database set-up.

关键词： Cytochrome oxidase Diptera mitochondrial DNA phylogenetic analysis

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Fungal diversity notes 367-490:taxonomic and phylogenetic contributions to fungal taxa

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Fungal Diversity 2016年第5期80卷 1-270页

作者： Kevin D.Hyde Sinang Hongsanan Rajesh Jeewon D.Jayarama Bhat Eric H.C.McKenzie E.B.Gareth Jones Rungtiwa Phookamsak Hiran A.Ariyawansa Saranyaphat Boonmee Qi Zhao Faten Awad abdel-Aziz mohamed a.abdel-wahab Supharat Banmai Putarak Chomnunti Bao-Kai Cui Dinushani A.Daranagama Kanad Das Monika C.Dayarathne Nimali Ide Silva Asha J.Dissanayake Mingkwan Doilom Anusha H.Ekanayaka Tatiana Baptista Gibertoni Aristóteles Góes-Neto Shi-Ke Huang Subashini C.Jayasiri Ruvishika S.Jayawardena Sirinapa Konta Hyang Burm Lee Wen-Jing Li Chuan-Gen Lin Jian-Kui Liu Yong-Zhong Lu Zong-Long Luo Ishara S.Manawasinghe Patinjareveettil Manimohan Ausana Mapook Tuula Niskanen Chada Norphanphoun Moslem Papizadeh Rekhani H.Perera Chayanard Phukhamsakda Christian Richter AndréL.C.Mde A.Santiago E.Ricardo Drechsler-Santos Indunil C.Senanayake Kazuaki Tanaka T.M.D.S.Tennakoon Kasun M.Thambugala Qing Tian Saowaluck Tibpromma Benjarong Thongbai Alfredo Vizzini Dhanushka N.Wanasinghe Nalin N.Wijayawardene Hai-Xia Wu Jing Yang Xiang-Yu Zeng Huang Zhang Jin-Feng Zhang Timur S.Bulgakov Erio Camporesi Ali H.Bahkali Mohammad A.Amoozegar Lidia Silva Araujo-Neta Joseph F.Ammirati Abhishek Baghela R.P.Bhatt Dimitar Bojantchev Bart Buyck Gladstone Alves da Silva Catarina Letícia Ferreira de Lima Rafael JoséVilela de Oliveira Carlos Alberto Fragoso de Souza Yu-Cheng Dai Bálint Dima Tham Thi Duong Enrico Ercole Fernando Mafalda-Freire Aniket Ghosh Akira Hashimoto Sutakorn Kamolhan Ji-Chuan Kang Samantha C.Karunarathna Paul M.Kirk Ilkka Kytovuori Angela Lantieri Kare Liimatainen Zuo-Yi Liu Xing-Zhong Liu Robert Lücking Gianfranco Medardi Peter E.Mortimer Thi Thuong Thuong Nguyen Itthayakorn Promputtha K.N.Anil Raj Mateus A.Reck Saisamorn Lumyong Seyed Abolhassan Shahzadeh-Fazeli Marc Stadler Mohammad Reza Soudi Hong-Yan Su Takumasa Takahashi Narumon Tangthirasunun Priyanka Uniyal Yong Wang Ting-Chi Wen Jian-Chu Xu Zhong-Kai Zhang Yong-Chang Zhao Jun-Liang Zhou Lin Zhu Institute of Biotechnology and Germplasm Resources Key Lab of Southwestern Crop Gene Resources and Germplasm Innovation Ministry of AgricultureYunnan Provincial Key Laboratory of Agricultural BiotechnologyYunnan Academy of Agricultural SciencesKunming 650223YunnanPeople’s Republic of China Key Laboratory of Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming 650201YunnanPeople’s Republic of China Center of Excellence in Fungal Research Mae Fah Luang University333 M.1T.ThasudMuangChiang Rai 57100Thailand State Key Laboratory of Mycology Institute of MicrobiologyChinese Academy of SciencesNo 31st West Beichen RoadChaoyang DistrictBeijing 100101People’s Republic of China Department of Botany and Microbiology College of ScienceKing Saud UniversityP.O.Box:2455Riyadh1145Saudi Arabia Department of Botany and Microbiology Faculty of ScienceSohag UniversitySohag 82524Egypt Faculty of Agriculture and Life Sciences Hirosaki University3 Bunkyo-choHirosakiAomori 036-8561Japan The United Graduate School of Agricultural Sciences Iwate University18-8 Ueda 3 ChomeMorioka 020-8550Japan Guizhou Key Laboratory of Agricultural Biotechnology Guizhou Academy of Agricultural SciencesXiaohe DistrictGuiyang CityGuizhou Province 550006People’s Republic of China School of Science Mae Fah Luang UniversityChiang Rai 57100Thailand Department of Plant Pathology College of AgricultureGuizhou UniversityGuiyang 550025GuizhouPeople’s Republic of China Department of Botany Goa UniversityTaleigãoGoaIndia No.128/1-J Azad Housing SocietyCurcaGoa Velha 403108India Department of Biology Faculty of ScienceChiang Mai UniversityChiang Mai 50200Thailand World Agroforestry Centre East and Central AsiaKunming 650201YunnanPeople’s Republic of China Centre of Mountain Ecosystem Studies Kunming Institute of BotanyChinese Academy of SciencesKunming 650201YunnanPeople’s Republic of China Department of Microbial Drugs Helmholtz Centre for Infection Res

This is a continuity of a series of taxonomic papers where materials are examined,described and novel combinations are proposed where necessary to improve our traditional species concepts and provide updates on their *** addition to extensive morphological descriptions and appropriate asexual and sexual connections,DNA sequence data are also analysed from concatenated datasets(rDNA,TEF-a,RBP2 and b-Tubulin)to infer phylogenetic relationships and substantiate systematic position of taxa within appropriate *** new species or combinations are being proposed,we apply an integrative approach(morphological and molecular data as well as ecological features wherever applicable).Notes on 125 fungal taxa are compiled in this paper,including eight new genera,101 new species,two new combinations,one neotype,four reference specimens,new host or distribution records for eight species and one alternative *** new genera introduced in this paper are Alloarthopyrenia,Arundellina,Camarosporioides,Neomassaria,Neomassarina,Neotruncatella,Paracapsulospora and *** new species are Alfaria spartii,Alloarthopyrenia italica,Anthostomella ravenna,***,Arthrinium paraphaeospermum,Arundellina typhae,Aspergillus koreanus,Asterina cynometrae,Bertiella ellipsoidea,Blastophorum aquaticum,Cainia globosa,Camarosporioides phragmitis,Ceramothyrium menglunense,Chaetosphaeronema achilleae,Chlamydotubeufia helicospora,Ciliochorella phanericola,Clavulinopsis aurantiaca,Colletotrichum insertae,Comoclathris italica,Coronophora myricoides,Cortinarius fulvescentoideus,***,***,***,Cunninghamella gigacellularis,Cyathus pyristriatus,Cytospora cotini,Dematiopleospora alliariae,***,Diaporthe aseana,***,Distoseptispora multiseptata,***,***,Dothiora buxi,Emericellopsis persica,Gloniopsis calami,Helicoma guttulatum,Helvella floriforma,***,Hermatomyces subiculosa,Ju

关键词： Ascomycota Basidiomycota Dothideomycetes Mortierellomycotina Mucoromycotina Pezizomycetes Phylogeny Taxonomy New genus New species New host records

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Ensuring the possibility of using thorium as a fuel in a pressurized water reactor(PWR)

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Nuclear Science and Techniques 2021年第12期32卷 37-52页

作者： mohamed Y.M.Mohsen mohamed A.E.abdel-Rahman Aabdelghafar Galahom Nuclear Engineering Department Military Technical CollegeKobry ElkobbahCairoEgypt Higher Technological Institute 10th of Ramadan CityEgypt

The possibility of utilizing thorium as a fuel in a pressurized water reactor(PWR)has been proven from the neutronic perspective in our previously published work without assessing the thermal hydraulic(TH)and solid structure ***,the TH and solid structure performances must be studied to confirm these results and ensure the possibility of using a thorium-based fuel as an excellent accident-tolerant *** TH and solid structure performances of thorium-based fuels were investigated and compared with those of UO_(2).The radial and axial power peaking factors(PPFs)for UO_(2),(^(232)Th,^(235)U)O_(2),and(^(232)Th,^(233)U)O_(2)were examined with a PWR assembly to determine the total PPF of each *** Gd_(2)O_(3)and Er_(2)O_(3)were tested as burnable absorbers(BAs)to manage the excess reactivity at the beginning of the fuel cycle(BOC)and reduce the total ***_(2)O_(3)resulted in a more significant reduction to the total PPF and,therefore,a greater reduction to the temperature distribution compared to Gd_(2)O_(3).Given these results,we analyzed the effects of adding Er_(2)O_(3)to thorium-based fuels on their TH and solid structure performances.

关键词： Thermal hydraulic(TH) Solid structure Thorium-based fuel Gd2O3 Er_(2)O_(3)

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NANOPOROUS MATERIALS BASED ON SPIROKETAL AND SPIROTHIOKETAL POLYMERS FOR SEPARATING METHANOL-TOLUENE MIXTURE

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Chinese Journal of Polymer Science 2011年第4期29卷 450-455页

作者： Hamada Hamada.abdel-Razik Zeinhom mohamed El-Bahy Chemistry Department Faculty of Science and Education(Alkhurma Branch)Taif UniversitySaudi Arabia

Organic microporous materials based on spiroketal and spirothioketal polymers were synthesized through 1,3- dioxol-forming polymerization reaction between pentaerythritol or pentaerythritol tetrathiol and different types of cyclohexa- 1,4-dione derivatives. The structure of the prepared polymers was confirmed by NMR spectroscopy and molecular mass measurements. Nitrogen adsorption/desorption isotherms of the prepared polymers show a large amount of nitrogen adsorbed at low relative pressure indicating microporosity. These polymers have Brunauer Emmitt and Teller （BET） surface areas in the range from 492 （m^2g^-1） to 685 （m^2 g^-1）. The prepared polymers were found to be useful for pervaporation separation of methanol-toluene mixture with a separation factor up to 12.5 and fluxes, varying between 6.7×10-3 kg/（m^2 h） and 13.4 × 10^-3 kg/（m^2 h）.

关键词： Spiroketal polymers Nanoporous materials Separation membranes.

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Introduction of Fertigation in Sugarcane Production for Optimization of Water and Fertilizers Use

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Agricultural Sciences 2014年第11期5卷 945-957页

作者： Daffa Alla mohamed abdel wahab Agricultural Engineering Section Research and Development Department Kenana Sugar Company Rabak City Sudan

A fertigation experiment was conducted during 2009/2010 and 2010/2011 seasons under com-mercial field conditions in Kenana Sugar Scheme, Sudan (latitude 13.10’N and longitude 32.40’E) in heavy clay soils, with 65% clay, 24% silt, 11% sand and pH 7.5 - 8.5. The primary objective of this study was to compare different strategies for timing of injection, to develop management practices on the efficient use of water and fertilizers in production of sugarcane, maximize yield, and improve quality. In both seasons four treatments were studied in a randomized complete block design with three replications as: Injection of the dissolved urea (46% N) during entire irrigation time (100%), during the first half of the irrigation time, during the second half of the irrigation time, and Mechanical application of urea. The first three treatments were applied with the third irrigation cycle through the irrigation water so that nitrogen fertilizer in form of dissolved urea (46% N) was injected in irrigation water by means of pressure differential tank system which is based on the principle of a pressure differential being created by a valve and flow regulator forcing and injecting a varying amount of dissolved fertilizer into the irrigation water. In the fourth treatment the fertilizer spreader and rigid tine cultivator were used for urea application just before the third irrigation event. The reference evapotranspiration (ETo) and the amount of water required for irrigating sugarcane plants were calculated according to its phenological stages using Peman-Monteith approach. The results of this study support the general finding that the injection during the entire irrigation (100% of the irrigation) produced the best distribution uniformity of added urea. In this study, injection during the first half of the irrigation was not statistically different from injection during 100% of the irrigation.

关键词： Irrigation Injection Fertigation Randomized Sugarcane Gated Pipe Hydro-Flume Evapotranspiration Phenological Stages

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Spectral footprint of <i>Botrytis cinerea</i>, a novel way for fungal characterization

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Advances in Bioscience and Biotechnology 2013年第3期4卷 374-382页

作者： mohamed Aboelghar Hala.abdel wahab Department of Plant Pathology Faculty of Agriculture Ain Shams University Cairo Egypt National Authority for Remote Sensing and Space Sciences Cairo Egypt

Botrytis cinerea affects plant yield and quality. Many Botrytis species are morphologically similar leading to difficulty in pathogen identification. Spectroscopy can be used to identify pathogenic fungi. This study describes a novel method for fungal characterization. Here, we determined the spectral signatures of different B. cinerea isolates as well as various fungal genera. A unique spectral pattern was investigated at both genus and isolate level. The short wave infrared II (2055 - 2315 nm) provided the best discrimination between the fungal samples observed. Moreover, the spectral analysis was performed on non-transformed data and investigated significant differences among fungal genera as well as B. cinerea isolates, while the results investigated high similarity among replicates of the same isolate of B. cinerea. The results of each spectral test were obtained reproducibly without an expensive cost consumable during sample preparation and measurements. This innovative approach would allow us to identify, discriminate and classify fungi rapidly and inexpensively at the genus, species and isolate level.

关键词： Gray Mold Fungal Identification Fungal Classification

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Surgical Excision of Placenta with Lower Uterine Segment as a Conservative Management in a Case of Placenta Accreta: A Case Report

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Open Journal of Obstetrics and Gynecology 2018年第1期8卷 63-68页

作者： Ahmed Sherif abdel Hamid abdel wahab mohamed mohamed Yaseen Department of Obstetrics & Gynecology Ain-Shams University Cairo Egypt Department of Urology Ain-Shams University Cairo Egypt

Introduction: Placenta accreta is due to invasive placental implantation. It is diagnosed when there is failure of delivery of a retained placenta. This is usually complicated by massive intrapartum hemorrhage that ends by hysterectomy. Case: We report a case of conservative management in a case of placenta accreta involving an elliptical shape incision of the lower segment with removal of placenta with underlying lower uterine segment in a stable patient desiring future fertility. Conclusion: Conservative management may be valid in carefully selected cases of placenta accreta diagnosed pre-operatively in tertiary hospitals with availability of blood-bank and multi-disciplinary approach.

关键词： Placenta Accreta Conservative Management Elliptical Incision Cystostomy

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Tailored pancreatic reconstruction after pancreaticoduodenectomy: a single-center experience of 892 cases

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Hepatobiliary & Pancreatic Diseases International 2017年第5期16卷 528-536页

作者： Ayman El Nakeeb Ahmad M Sultan Ehab Atef Ali Salem Mostaffa Abu Zeid Ahmed Abu El Eneen Gamal El Ebidy mohamed abdel wahab Gastroenterology Surgical Center Mansoura UniversityMansoura 35516 Egypt

BACKGROUND: Pancreatic reconstruction following pancreaticoduodenectomy(PD) is still debatable even for pancreatic surgeons. Ideally, pancreatic reconstruction after PD should reduce the risk of postoperative pancreatic fistula(POPF) and its severity if developed with preservation of both exocrine and endocrine pancreatic functions. It must be tailored to control the morbidity linked to the type of *** study was to show the best type of pancreatic reconstruction according to the characters of pancreatic stump. METHODS: We studied all patients who underwent PD in our center from January 1993 to December 2015. Patients were categorized into three groups depending on the presence of risk factors of postoperative complications: low-risk group(absent risk factor), moderate-risk group(presence of one risk factor) and high-risk group(presence of two or more risk factors). RESULTS: A total of 892 patients underwent PD for resection of periampullary tumor. BMI >25 kg/m~2, cirrhotic liver, soft pancreas, pancreatic duct diameter <3 mm, and pancreatic duct location from posterior edge <3 mm are risk variables for development of postoperative complications. POPF developed in 128(14.3%) patients. Delayed gastric emptying occurred in 164(18.4%) patients, biliary leakage developed in 65(7.3%) and pancreatitis presented in 20(2.2%). POPF in low-, moderate-and high-risk groups were 26(8.3%), 65(15.7%) and 37(22.7%) patients, respectively. Postoperative morbidity and mortality were significantly lower with pancreaticogastrostomy(PG) in high-risk group, while pancreaticojejunostomy(PJ) decreases incidence of postoperative steatorrhea in all groups. CONCLUSIONS: Selection of proper pancreatic reconstruction according to the risk factors of patients may reduce POPF and postoperative complications and mortality. PG is superior to PJ as regards short-term outcomes in high-risk group but PJ provides better pancreatic function in all groups and therefore, PJ is superior in l

关键词： periampullary tumor pancreaticogastrostomy pancreaticojejunostomy pancreaticoduodenectomy postoperative pancreatic fistula

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