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| 1 | Numerical and Experimental Modelling of Gas Flow and Heat Transfer in the Air Gap of an Electric Machine显示文摘This work deals with the cooling of high-speed electric machines, such as motors and generators, through an air gap. It consists of numerical and experimental modeling of gas flow and heat transfer in an annular channel. Velocity and temperature profiles are modeled in the air gap of a high-speed test machine. Friction and heat transfer coefficients are presented in a large velocity range. The goals are reached acceptably using numerical and experimental research. The velocity field by the numerical method does not match in every respect the estimated flow mode. The absence of secondary Taylor vortices is evident when using time averaged numerical simulation. | Maunu KUOSA Petri SALLINEN Jaakko LARJOLA | 2004 | Journal of Thermal Science2004，13，3： | 16 |
| 2 | Intragenic antagonistic roles of protein and circRNA in tumorigenesis显示文摘circRNAs arise from back splicing events during mRNA processing, and when deregulated can play an active role in cancer. Here we characterize a new circRNA (circPOK) encoded by the Zbtb7a gene (also kown as POKEMON, LRF) in the context of mesenchymal tumor progression. circPOK functions as a non-coding proto-oncogenic RNA independently and antithetically to its linear transcript counterpart, which acts as a tumor suppressor by encoding the Pokemon transcription factor. We find that circPOK regulates pro-proliferative and pro-angiogenic factors by co-activation of the ILF2/3 complex. Importantly, the expression of Pokemon protein and circRNA is aberrantly uncoupled in cancer through differential post-transcriptional regulation. Thus, we identify a novel type of genetic unit, the iRegulon, that yields biochemically distinct RNA products, circular and linear, with diverse and antithetical functions. Our findings further expand the cellular repertoire towards the control of normal biological outputs, while aberrant expression of such components may underlie disease pathogenesis including cancer. | Jlenia Guarnerio Yang Zhang Giulia Cheloni Riccardo Panella Jesse Mae Katon Mark Simpson Akinobu Matsumoto Antonella Papa Cristian Loretelli Andreas Petri Sakari Kauppinen Cassandra Garbutt Gunnlaugur Petur Nielsen Vikram Deshpande Mireia Castillo-Martin Carlos Cordon-Cardo Spentzos Dimitrios John G. Clohessy Mona Batish Pier Paolo Pandolfi | 2019 | Cell Research2019，29，8： | 15 |
| 3 | 巨大肩袖撕裂:病理机制、治疗方法和临床结果显示文摘肩袖损伤是肩肘外科医师每天面对的疾病,肩袖撕裂的大小对于术后功能恢复有重要影响。肩袖撕裂>5cm,或者累及2个以上的全层肌腱撕裂被认为是巨大肩袖撕裂。巨大肩袖撕裂治疗方法多样,影响术后功能效果的因素也很多,是肩袖损伤中的治疗难点。Greenspoon发表在2015年'肩肘外科杂志'的这篇综述对巨大肩袖撕裂从基础知识讲起,详细描述了产生巨大肩袖撕裂的病理机制,更为重要的是根据每种治疗方法提出恰当的手术适应证,并提供目前的文献回顾,我们对该综述进行概述性编译,以方便更多的国内读者阅读。 | 陈建海 Greenspoon JA Petri M Warth RJ | 2015 | 中华肩肘外科电子杂志2015，3，4： | 12 |
| 4 | 预制混凝土夹心保温外挂墙体桁架式不锈钢连接件抗拔与抗剪性能试验研究显示文摘预制混凝土夹心保温外挂墙体具有承重、保温与装饰一体化的优点,可实现保温体系与主体结构同寿命。桁架式不锈钢连接件是预制混凝土夹心保温外挂墙体常用的一种连接件形式。系统开展了适用于50mm厚保温层预制混凝土夹心保温外挂墙体的桁架式不锈钢连接件的抗拔与抗剪性能试验,结果表明:连接件的抗拔破坏形态为腹杆拉断或锚固端焊点脱开,抗拔承载力试验值为21k N;连接件抗剪破坏形态为受压腹杆屈服,受拉腹杆拉断,单个600mm波段连接件的抗剪承载力试验值为18.7k N;连接件抗拔和抗剪承载力均有较大安全储备。 | 薛伟辰 姜伟庆 宋佳峥 Petri Suur-Askola 胡翔 | 2018 | 施工技术2018，47，12： | 11 |
| 5 | 应用LH-PCR研究党参、麻黄和独一味内生细菌多样性显示文摘通过直接提取药用植物样品的总DNA,采用长度多态片段PCR(length heterogeneity PCR,LH-PCR)技术研究四川省甘孜藏族自治州的党参、麻黄和独一味3种药用植物内生细菌多样性.结果表明:同种植物根、茎、叶的LH-PCR图谱相似度很高,条带丰富度差别不大;但不同植物样品之间的差异较大.党参的植物样品条带丰富度最大,麻黄次之,独一味最低.3种药用植物中474 bp长度的细菌是绝对的优势菌群.植物内生细菌多样性与土壤速效磷呈负相关,而与土壤pH值呈正相关.海拔和土壤总氮是影响植物样品内生细菌多样性分布的两个重要环境因子.LH-PCR所得的种群信息能较直观地反映不同植物样品间细菌多样性的差异.因此LH-PCR适用于分析药用植物内生菌多样性. | 李小林 江华明 张波 唐国庆 Petri Penttinen 曾珍 郑林用 张小平 | 2013 | 应用生态学报2013，24，9： | 8 |
| 6 | Advantages of white LED lamps and new detector technology in photometry显示文摘Light emitting diode(LED)lighting is becoming more and more popular,as incandescent lamps are being phased out globally.LEDs have several advantages over incandescent lamps,including energy efficiency,robustness,long lifetime,and good temporal stability.The three latter features make LEDs attractive candidates as new photometric standards.Because the spectra of white LEDs are limited to the visible wavelength range,a novel method for the realization of photometric units based on the predictable quantum efficient detector(PQED)can be utilized.The method eliminates the need of photometric filters that are traditionally used in photometry,and instead relies on carrying out the photometric weighting numerically based on the measured relative spectrum of the source.The PQED-based realization simplifies the traceability chain of photometric measurements significantly as compared with the traditional filter-based method.The measured illuminance values of a white LED deviate by only 0.03%when determined by the new and the traditional methods.The new PQED method has significantly lower expanded uncertainty of 0.26%(k=52)as compared with that of the traditional filter-based method of 0.42%(k=52).Furthermore,when filtered photometers that measure LED lighting are calibrated using LED lamps as calibration sources instead of incandescent lamps,a significant decrease in the uncertainty related to the spectral mismatch correction can be obtained.The maximum spectral mismatch errors of LED measurements decreased on average by a factor of 3 when switching from an incandescent lamp to an LED calibration source. | Tomi Pulli Timo Donsberg Tuomas Poikonen Farshid Manoocheri Petri Karha Erkki Ikonen | 2015 | Light(Science & Applications)2015，4，1： | 8 |
| 7 | Sessile serrated adenomas:Demographic,endoscopic and pathological characteristics显示文摘AIM:To study the demographic and endoscopic characteristics of patients with sessile serrated adenoma(SSA) in a single center.METHODS:Patients with SSA were identified by review of the pathology database of Mayo Clinic Arizona from 2005 to 2007.A retrospective chart review was performed to extract data on demographics,polyp characteristics,presence of synchronous adenomatous polyps or cancer,polypectomy methods,and related complications.RESULTS:One hundred and seventy-one(2.9%) of all patients undergoing colonoscopy had a total of 226 SSAs.The mean(SE) size of the SSAs was 8.1(0.4) mm;42% of SSAs were ≤ 5 mm,and 69% were ≤ 9 mm.Fifty-one per cent of SSAs were located in the cecum or ascending colon.Approximately half of the patients had synchronous polyps of other histological types,including hyperplastic and adenomatous polyps.Synchronous adenocarcinoma was present in seven(4%) cases.Ninety-seven percent of polyps were removed by colonoscopy.CONCLUSION:Among patients with colon polyps,2.9% were found to have SSAs.Most of the SSAs were located in the right side and were safely managed by colonoscopy. | Suryakanth R Gurudu Russell I Heigh Giovanni De Petris Evelyn G Heigh Jonathan A Leighton Shabana F Pasha Isaac B Malagon Ananya Das | 2010 | World Journal of Gastroenterology2010，16，27： | 7 |
| 8 | 若尔盖高原泥炭沼泽土嗜冷细菌系统发育分析显示文摘结合低温纯培养手段、核糖体DNA扩增片段限制性内切酶分析技术和克隆测序,研究了若尔盖高原泥炭沼泽土中可培养菌的多样性、系统发育和产低温酶特性。从3块采样地的土样中分离到47株表型各不相同的菌株。16S rRNA测序和系统发育分析结果表明,若尔盖高原泥炭沼泽土的可培养低温菌高度相似于分离自极地、高山冻土和冰川等低温环境的嗜冷菌。47株菌分属于4个不同的群,包括高GC含量群、低GC含量群、Beta和Gama变形菌纲等。革兰氏阳性菌以节杆菌属(Arthrobacter)为主,而革兰氏阴性菌以假单胞菌属(Pseudomonas)为主。其他的细菌分属于微小杆菌属(Exiguobacterium)、芽孢八叠球菌属(Sporosarcina)、贪噬菌属(Variovorax)、紫色杆菌属(Janthinobacterium)和寡养单胞菌属(Stenotrophomonas)等不同的类群。产低温酶分析结果表明,在分离到的47株菌中,大多数菌株都能分泌纤维素降解酶,50%以上的菌株具有蛋白酶活性,而以节杆菌的胞外酶产生能力最强。若尔盖高原泥炭沼泽土中存在丰富的低温菌类群,在酶学生物技术上具有潜在应用价值。 | 辜运富 郑有坤 Petri Penttinen 王宪斌 张小平 | 2014 | 湿地科学2014，12，5： | 6 |
| 9 | Seasonal variations of acute appendicitis and nonspecific abdominal pain in Finland显示文摘AIM:To investigate whether seasonal changes had an effect on the incidence of acute appendicitis(AA)or nonspecific abdominal pain(NSAP).METHODS:We carried out a national register study of all patients with a hospital discharge diagnosis of AA and acute NSAP in Finland.Data were analyzed for the whole country and correlated to seasonal and weather parameters(temperature,humidity).Moreover,additional sub-analyses were performed for five geographically different area of Finland.RESULTS:The observation period spanned 21 years,with 186558 appendectomies,of which 137528(74%)cases were reported as AA.The incidence of AA declined for 32%over the study period.The average incidence of the NSAP was 34/10000 per year.The mean annual temperature,but not relative humidity,showed clear geographical variations.The incidence of AA decreased significantly during the cold months of the year.No correlation was detected between temperature and incidence of NSAP.Humidity had a statistically significant impact on NSAP.CONCLUSION:The incidence of acute appendicitis is declining in Finland.We detected a clear seasonality in the incidence of AA and NSAP. | Imre Ilves Anne Fagerstrm Karl-Heinz Herzig Petri Juvonen Pekka Miettinen Hannu Paajanen | 2014 | World Journal of Gastroenterology2014，20，14： | 6 |
| 10 | 川楝内生放线菌多样性及群落结构研究显示文摘为深入挖掘川楝药材中的微生物资源,研究分析了川渝地区川楝内生放线菌的多样性和群落结构.运用PCR-DGGE技术对重庆万州、四川资阳、四川遂宁三个地区采集的川楝样品进行分析.DGGE图谱显示不同地区相同部位的样品以及相同地区的不同部位之间川楝内生放线菌都存在多样性差异,这种差异来自于地域环境和自身代谢水平的不同.不同部位总体上呈现树皮的多样性最丰富,而果实的多样性最差.对DGGE条带进行回收测序,共获得24条序列,归于11个属,链霉菌属(Streptomyces)为优势菌属占25%,其余的川楝内生放线菌归于为芽球菌属(Blastococcus)、气微菌属(Aeromicrobium)、中村氏菌属(Nakamurella)、分枝杆菌属(Mycobacterium)、棒杆菌属(Corynebacterium)、红球菌属(Rhodococcus)、冷杆菌属(Cryobacterium)、微杆菌属(Microbacterium)、诺卡氏菌属(Nocardioides)、利夫森氏菌属(Leifsonia)等稀有放线菌属,占总数的75%.结果表明分布于不同地域的川楝各组织内生放线菌多样性及群落结构存在差异,蕴藏着丰富的放线菌资源. | 张瀚能 张金羽 刘茂柯 李静 廖萍 赵翀 赵珂 Petri Penttinen | 2016 | 四川大学学报(自然科学版)2016，53，6： | 5 |
| 11 | Numerical and Experimental Modelling of Gas Flow and Heat Transfer in the Air Gap of an Electric Machine. Part II: Grooved Surfaces显示文摘The study deals with the cooling of a high-speed electric machine through an air gap with numerical and experimental methods. The rotation speed of the test machine is between 5000-4000 r/rain and the machine is cooled by a forced gas flow through the air gap. In the previous part of the research the friction coefficient was measured for smooth and grooved stator cases with a smooth rotor. The heat transfer coefficient was recently calculated by a numerical method and measured for a smooth stator-rotor combination. In this report the cases with axial groove slots at the stator and/or rotor surfaces are studied. Numerical flow simulations and measurements have been done for the test machine dimensions at a large velocity range. At constant mass flow rate the heat transfer coefficients by the numerical method attain bigger values with groove slots on the stator or rotor surfaces. The results by the numerical method have been confirmed with measurements. The RdF-sensor was glued to the stator and rotor surfaces to measure the heat flux through the surface, as well as the temperature. | Maunu KUOSA Petri SALLINEN Arttu REUNANEN Jari BACKMAN Jaakko LARJOLA Lasse KOSKELAINEN | 2005 | Journal of Thermal Science2005，14，1： | 4 |
| 12 | Towards a theory of decoupling: degrees of decoupling in the EU and the case of road traffic in Finland between 1970 and 2001显示文摘 | Petri Tapio | 2005 | Transport Policy2005，，2： | 4 |
| 13 | Fluid dynamic modeling of a free piston engine with labyrinth seals显示文摘Preliminary design and simulation of a free piston engine suitable for small-scale energy production in distributed energy systems is presented in this paper.The properties,particularly the properties of gas seals of the engine are simulated using a simulation program developed for this case,and the results are utilized in preliminary main design parameter selection.The engine simulation program was developed by combining and modifying the source codes of the simulation and calculation programs obtained from Helsinki University of Technology,Tampere University of Technology,and Lappeenranta University of Technology.Because of the contact-free labyrinth seal used in the piston,the efficiency of the motor is lower than the efficiency of a conventional motor with oil lubricated piston rings.On the other hand,the lack of bearing losses,and the lack of losses associated with a crankshaft system and a gearbox,as well as the lack of lubrication oil expenses,compensates this effect.As a net result,this new motor would perform slightly better than the conventional one.Being completely oil-free,it is very environmentally friendly,and its exhaust gases are completely free of oil residuals which are causing problems in normal gas motors. | Jaakko Larjola Juha Honkatukia Petri Sallinen Jari Backman | 2010 | Journal of Thermal Science2010，19，2： | 4 |
| 14 | 川楝内生放线菌多样性及抗菌活性筛选显示文摘【目的】探究药用植物川楝内生放线菌多样性,从中挖掘出新的放线菌菌株,发现新的潜在农业生防和医药先导化合物。【方法】从四川境内的资阳、遂宁以及重庆万州采集川楝的根、茎、叶、果、皮,采用纯培养方法,用4种培养基共分离获得148株放线菌。通过形态学观察筛选出60株放线菌进行RFLP分析,选出代表菌株进行16S r RNA基因序列分析。以3株细菌和6株病原真菌作为指示菌株,检测初筛出的60株菌株的抗菌活性以及聚酮合酶(PKSⅠ、PKSⅡ)基因、非核糖体多肽合成酶(NRPS)基因和卤化酶(Halo)基因。【结果】基于16S r RNA-RFLP分析,60株放线菌被分成10簇,筛选出25株代表菌株分别属于7个属,包括Streptomyces、Micromonospora、Planotetraspora、Streptosporangium、Nocardiopsis、Prauseria、Microbispora,其中链霉菌占73.3%。供试的川楝内生放线菌对细菌、真菌有不同程度的抗菌活性;其中含有4类化合物合成基因的菌株占10%-55%。【结论】药用植物川楝内生放线菌具有丰富的多样性,且不同地区不同部位川楝组织中放线菌的种群存在差异;分离菌株广谱的抗菌活性证明,川楝内生放线菌在次生代谢产物合成方面具有巨大潜力,这为进一步的药物开发提供了丰富的菌种资源。 | 廖萍 赵翀 张瀚能 刘茂柯 Petri Penttinen 张小平 赵珂 | 2016 | 微生物学通报2016，43，11： | 4 |
| 15 | Towards a theory of decoupling: degrees of decoupling in the EU and the case of road traffic in Finland between 1970 and 2001显示文摘 | Petri Tapio | 2005 | Transport Policy2005，，2： | 3 |
| 16 | Fecal Transplantation, Through Colonoscopy, Is Effective Therapy for Recurrent Clostridium difficile Infection显示文摘 | Eero Mattila Raija Uusitalo–Sepp?l? Maarit Wuorela Laura Lehtola Heimo Nurmi Matti Ristikankare Veikko Moilanen Kimmo Salminen Maaria Sepp?l? Petri S. Mattila Veli–Jukka Anttila Perttu Arkkila | 2012 | Gastroenterology2012，，3： | 3 |
| 17 | Gut microbiota are related to Parkinson’s disease and clinical phenotype显示文摘 | Filip Scheperjans Velma Aho Pedro A. B. Pereira Kaisa Koskinen Lars Paulin Eero Pekkonen Elena Haapaniemi Seppo Kaakkola Johanna Eerola‐Rautio Marjatta Pohja Esko Kinnunen Kari Murros Petri Auvinen | 2015 | Mov Disord2015，，3： | 3 |
| 18 | Gene and cell therapy based treatment strategies for inflammatory bowel diseases显示文摘Inflammatory bowel diseases(IBD)are a group of chronic inflammatory disorders most commonly affecting young adults.Currently available therapies can result in induction and maintenance of remission,but are not curative and have sometimes important side effects.Advances in basic research in IBD have provided new therapeutic opportunities to target the inflammatory process involved.Gene and cell therapy approaches are suitable to prevent inflammation in the gastrointestinal tract and show therefore potential in the treatment of IBD.In this review,we present the current progress in the field of both gene and cell therapy and future prospects in the context of IBD.Regarding gene therapy,we focus on viral vectors and their applications in preclinical models.The focus for cell therapy is on regulatory T lymphocytes and mesenchymal stromal cells,their potential for the treatment of IBD and the progress made in both preclinical models and clinical trials. | Sander van der Marel Anna Majowicz Sander van Deventer Harald Petry Daniel W Hommes Valerie Ferreira | 2011 | World Journal of Gastrointestinal Pathophysiology2011，2，6： | 3 |
| 19 | Probiotic Lactobacillus rhamnosus downregulates FCER1 and HRH4 expression in human mast cells显示文摘AIM:To investigate the effects of four probiotic bacteria and their combination on human mast cell gene expression using microarray analysis.METHODS:Human peripheral-blood-derived mast cells were stimulated with Lactobacillus rhamnosus (L.rhamnosus) GG (LGG),L.rhamnosus Lc705 (Lc705),Propionibacterium freudenreichii ssp.shermanii JS (PJS) and Bifidobacterium animalis ssp.lactis Bb12 (Bb12) and their combination for 3 or 24 h,and were subjected to global microarray analysis using an Affymetrix GeneChip Human Genome U133 Plus 2.0 Array.The gene expression differences between unstimulated and bacteria-stimulated samples were further analyzed with GOrilla Gene Enrichment Analysis and Visualization Tool and MeV Multiexperiment Viewer-tool.RESULTS:LGG and Lc705 were observed to suppress genes that encoded allergy-related high-affinity IgE receptor subunits α and γ (FCER1A and FCER1G,respectively) and histamine H4 receptor.LGG,Lc705 and the combination of four probiotics had the strongest effect on the expression of genes involved in mast cell immune system regulation,and on several genes that encoded proteins with a pro-inflammatory impact,such as interleukin (IL)-8 and tumour necrosis factor alpha.Also genes that encoded proteins with anti-inflammatory functions,such as IL-10,were upregulated.CONCLUSION:Certain probiotic bacteria might diminish mast cell allergy-related activation by downregulation of the expression of high-affinity IgE and histamine receptor genes,and by inducing a pro-inflammatory response. | Anna Oksaharju Matti Kankainen Riina A Kekkonen Ken A Lindstedtt Petri T Kovanen Riitta Korpela Minja Miettinen | 2011 | World Journal of Gastroenterology2011，17，6： | 3 |
| 20 | Combining population genomics and ecological niche modeling to assess taxon limits between Carex jemtlandica and C. lepidocarpa显示文摘Carex section Ceratocystis(Cyperaceae)is a group of recently evolved plant species,in which hybridization is frequent,introgression is documented,taxonomy is complex,and morphological boundaries are vague.Within this section,a unified taxonomic treatment of the Carex jemtlandica-Carex lepidocarpa species complex does not exist,and Norway may currently be the sole country accepting species rank for both.Carex jemtlandica is mainly confined to Fennoscandia and is thus a Fennoscandian conservation responsibility.This motivated us to test the principal hypothesis that both C jemtlandica and C lepidocarpa represent evolutionary significant units,and that both deserve their current recognition at species level.We investigated their evolutionary distinctiveness in Norway,using restriction site-associated DNA sequencing and ecological niche modeling.Our genomic results reveal two genetic clusters,largely corresponding to C jemtlandica and C lepidocarpa that also remain distinct in sympatry,despite clear indications of ongoing hybridization and introgression.The ecological niche modeling suggests that they occupy different environmental niches.Jointly,our results clearly show that C.jemtlandica and C lepidocarpa represent separately evolving entities that should qualify recognition as evolutionary significant units.Given the high level of introgression compared to other hybridizing species pairs in Carex we recommend treating C jemtlandica as a subspecies of C lepidocarpa. | Malene Nygaard Petri Kemppainen James D.M.Speed Reidar Elven Kjell Ivar Flatberg Leif P.Galten Narjes Yousefi Heidi Solstad Mika Bendiksby | 2021 | Journal of Systematics and Evolution2021，59，4： | 3 |
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