检索结果-南通市图书馆

微流体注入-热透镜显微系统高灵敏的快速检测微囊藻毒素

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

分析科学学报 2019年第1期35卷 110-114页

作者：刘明强 FRANKO mladen 西南科技大学理学院四川绵阳621010 新戈里察大学环境与生命科学实验室

基于蛋白磷酸酶抑制反应,发展了微流体注入-热透镜显微探测系统,并用于高灵敏的快速检测水体中微囊藻毒素。研究了反应时间、底物浓度和酶活性等因素对检测微囊藻毒素的影响;给出了最优的反应参数。与传统基于微量滴定板的微囊藻毒素检... 详细信息

基于蛋白磷酸酶抑制反应,发展了微流体注入-热透镜显微探测系统,并用于高灵敏的快速检测水体中微囊藻毒素。研究了反应时间、底物浓度和酶活性等因素对检测微囊藻毒素的影响;给出了最优的反应参数。与传统基于微量滴定板的微囊藻毒素检测方法相比,酶的用量可减少一个数量级,并且将分析时间从30min缩短至6min。该检测方法对微囊藻毒素LR的检出限约为20ng/L。测试了来自一渔场的水样,发现水体中微囊藻毒素水平低于本方法的检出限。

关键词：微流体注入分析热透镜显微技术微囊藻毒素蛋白磷酸酶抑制反应

ROLE OF VOCATIONAL ASSOCIATIONS IN LIFE LONG LEARNING SHOWN ON EXAMPLE OF CROATIAN MAINTENANCE SOCIETY AND OF EUROPEAN FEDERATION OF NATIONAL MAINTENANCE SOCIETY

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

ROLE OF VOCATIONAL ASSOCIATIONS IN LIFE LONG LEARNING SHOWN ...

Problems in screening colorectal cancer in the elderly

第四届世界维修大会

作者： SAMO ULAGA mladen JAKOVI University of Maribor Faculty of Mechanical Engineering

Strong development of technologies and the process of globalization are causing constant changes in maintenance activities. In order to keep track of changes and fulfil user expectations, it is necessary to go through continuous education–"life long learning". The need to always acquire knowledge brings us to continuously discover its missing pieces and makes us search for knowledge sources. A significant role in this process is played by national maintenance associations and EFNMS （European Federation of National Maintenance Societies）–supreme European maintenance association.

关键词： maintenance life long learning EFNMS competences.

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2003年第10期9卷 2335-2337页

作者： DavidoviM.mladen Milosevic P.Dragoslav Zdravkovic Sanja Bojic Bozidar Djurica Snezana Center of Geriatric Medicine 11050 BeogradRifata Burdzevica 31Yugoslavia

AIM:To explore the problems in the screening of colorecta carcinoma in the elderly. METHODS:Three models of colorectal cancer prevention were examined:standard screening,active check-up of suspected cases and summons to have endoscopic check- up for previously diagnosed colorectal *** study was performed among three groups of elderly individuals: Group 1 (167 cases),hospitalized asymptomatic individuals without symptoms in large *** 2 (612 cases): old individuals at home for the aged,out of which 32 showed symptoms of colon disorders;Group 3 (44 cases):elderly people with diagnosed *** a result of 1788 rectosigmoidoscopies,we identified 61 individuals with polyps,out of which 44 patients were over 65 years old. However,only 9 of these 44 individuals agreed to have the endoscopy performed again. RESULTS:One cancer and 13 polyps were detected in Group 1,and two polyps in Group ***,it should be noted that only eleven individuals from Group 2 agreed to have the *** Group 3,there were no relapses of the polyps among the nine individuals who came back for the endoscopy. CONCLUSION:Poor understanding of the screening procedures is one of the greatest problems in early detection of the cancer in the ***,the cooperation is better with hospitalized patients,than with 'successfully old' persons.

关键词： Aged Aged, 80 and over Colonic Polyps control Colonoscopy Colorectal Neoplasms Humans Mass Screening Motivation Patient Acceptance of Health Care Patient Compliance

Synchronous anorectal melanoma

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2006年第21期12卷 3453-3455页

作者： Drinko Balicevic Karla Tomic Miroslav Bekavac-Beslin Igor Kovacevic August Mijic mladen Belicza Bozo Kruslin "Ljudevit Jurak" Department of Pathology University Hospital Sestre Milosrdnice ZagrebCroatia Department of Pathology General Hospital Josip Bencevic Slavonski BrodCroatia Department of Surgery University Hospital Sestre Milosrdnice ZagrebCroatia Department of Gastroenterology University Hospital Sestre Milosrdnice ZagrebCroatia

Anorectal melanoma is a very rare tumor with poor prognosis. Rectal bleeding is the most frequent symptom and surgical treatment ranges from local excision to radical abdominoperineal resection. We report a case of a 75-years-old male patient who presented with a history of recurrent rectal bleeding, and whose histopathological diagnosis was melanoma. Macroscopically, we found two distinct tumors in anorectal region, 0.5 cm and 1.5 cm from dentate line. The first one was pedunculated, on a thin stalk, measuring 1 cm in greatest diameter, and the second one was sessile and nodular measuring up to 2.8 cm in largest diameter. Microscopic examination and immunohistochemical analysis of both tumors confirmed the diagnosis of melanoma. This case represents multiple synchronous primary melanoma of the anorectal region, with a possibility that one of the lesions is primary melanoma and the second one is a satellite lesion.

关键词： Melanoma Anorectal region Satellite lesions Synchronous melanomas

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

汽轮发电机匝间短路有限元分析

国外大电机 2013年第2期 13-19页

作者： mladen Sasic(加拿大)

通过永久安装气隙磁通探测器进行磁通在线监测，是一种确定汽轮发电机转子绕组发生匝间短路的公认技术。利用安装在电机气隙中（在定子槽楔上）与便携式或固定设备相连接的磁通探测器来进行磁通测量。在这个“磁通探测器”，试验中，为... 详细信息

通过永久安装气隙磁通探测器进行磁通在线监测，是一种确定汽轮发电机转子绕组发生匝间短路的公认技术。利用安装在电机气隙中（在定子槽楔上）与便携式或固定设备相连接的磁通探测器来进行磁通测量。在这个“磁通探测器”，试验中，为获得可靠的诊断，必须在空载到满载范围内的不同负载状态下进行磁通探测器信号的测量。在基荷机组上应用该方法时会出现一系列困难。近年来，一种安装在定子齿上的新型磁通探测器设计被采用。此外，开发出新的算法来分析不同类型探测器的测量结果，以使不同负载状态下的测试需求降至最低。本文采用—个有限元模型（FEM）对不同负载状态下的这些新算法进行验证。基于此模型和实际测量结果，可以证明：如果应用合适的传感器和算法，元需改变电机的负载就可以准确探测出匝间短路。本文描述了新的方法及它的优势，同时针对来自于正在运行的发电机的在线测量结果与模拟不同转子状态的FEM结果进行了比较。

关键词：有限元磁密磁通探测器转子匝间短路同步发电机

Relations between mercury fractions and microbial community components in seawater under the presence and absence of probable phosphorus limitation conditions

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2019年第1期31卷 145-162页

作者： Igor ?ivkovi? Vesna Fajon Jo?e Kotnik Yaroslav Shlyapnikov Kristina Obu Vazner Ermira Begu Stefanija ?estanovi? Danijela ?anti? Ana Vrdoljak Slaven Jozi? mladen ?oli? Jelena Lu?i? Jere Ve?a Grozdan Ku?pili? Marin Ordulj Frano Mati? Branka Grbec Natalia Bojani? ?ivana Nin?evi? Gladan Milena Horvat Department of Environmental Sciences Jo?ef Stefan Institute Jo?ef Stefan International Postgraduate School Ecological Engineering Institute Maribor 2000 Slovenia Laboratory of Marine Microbiology Institute of Oceanography and FisheriesSplit 21000 Croatia Laboratory of Chemical Oceanography and Sedimentology of the Sea Institute of Oceanography and FisheriesSplit 21000 Croatia Laboratory of Chemical Oceanography and Sedimentology of the Sea Institute of Oceanography and Fisheries Department of Marine Studies University of SplitSplit 21000 Croatia Laboratory of Physical Oceanography Institute of Oceanography and FisheriesSplit 21000 Croatia Laboratory of Plankton and Shellfish Toxicity Institute of Oceanography and FisheriesSplit 21000 Croatia

Microbial transformations of toxic monomethylmercury(MMHg) and dissolved gaseous mercury(DGM) at the lower levels of the marine food web are not well understood, especially in oligotrophic and phosphorus-limited seas. To examine the effects of probable phosphorus limitation(~PP-limitation) on relations between mercury(Hg) fractions and microorganisms, we determined the total mercury(THg), total methylated mercury(MeHg), DGM, and microbiological and chemical parameters in the Central Adriatic Sea. Using statistical analysis, we assessed the potential microbial effects on Hg transformations and bioaccumulation. Only in the absence of ~PP-limitation conditions(^(NO–P)P-limitation) is MeHg significantly related to most chemical and microbial parameters, indicating metabolism-dependent Hg *** heterotrophic activity of low nucleic acid bacteria(abundant in oligotrophic regions)seems responsible for most of Hg methylation under ^(NO–P)P-limitation. Under these conditions,DGM is strongly related to microbial fractions and chlorophyll a, indicating biological DGM production, which is probably not metabolically induced, as most of these relations are also observed underPP-limitation. MMHg biomagnification was observed through an increased bioaccumulation factor from microseston to mesozooplankton. Our results indicate that Hgtransformations and uptake might be enhanced under ^(NO–P)P-limitation conditions, emphasizing their impact on the transfer of Hg to higher trophic levels.

关键词： Mercury speciation Methylmercury Probable phosphorus limitation Microbial community

Esophagogastric anastomosis in rats: Improved healing by BPC 157 and L-arginine, aggravated by L-NAME

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

World Journal of Gastroenterology 2016年第41期22卷 9127-9140页

作者： Zeljko Djakovic Ivka Djakovic Vedran Cesarec Goran Madzarac Tomislav Becejac Goran Zukanovic Domagoj Drmic Lovorka Batelja Anita Zenko Sever Danijela Kolenc Alen Pajtak Nikica Knez mladen Japjec Kresimir Luetic Dinko Stancic-Rokotov Sven Seiwerth Predrag Sikiric Departments of Pharmacology and Pathology Medical Faculty University of Zagreb 10000 Zagreb Croatia

AIM To cure typically life-threatening esophagogastric anastomosis in rats, lacking anastomosis healing and sphincter function rescue, in particular. METHODS Because we assume esophagogastric fistulas represent a particular NO-system disability, we attempt to identify the benefits of anti-ulcer stable gastric pentadecapeptide BPC 157, which was in trials for ulcerative colitis and currently for multiple sclerosis, in rats with esophagocutaneous fistulas. Previously, BPC 157 therapies have promoted the healing of intestinal anastomosis and fistulas, and esophagitis and gastric lesions, along with rescued sphincter function. Additionally, BPC 157 particularly interacts with the NOsystem. In the 4 d after esophagogastric anastomosis creation, rats received medication(/kg intraperitoneallyonce daily: BPC 157(10 μg, 10 ng), L-NAME(5 mg), or L-arginine(100 mg) alone and/or combined or BPC 157(10 μg, 10 ng) in drinking water). For rats underwent esophagogastric anastomosis, daily assessment included progressive stomach damage(sum of the longest diameters, mm), esophagitis(scored 0-5), weak anastomosis(m L H2 O before leak), low pressure in esophagus at anastomosis and in the pyloric sphincter(cm H2O), progressive weight loss(g) and mortality. Immediate effect assessed blood vessels disappearance(scored 0-5) at the stomach surface immediately after anastomosis creation. RESULTS BPC 157(all regimens) fully counteracted the perilous disease course from the very beginning(i.e., with the BPC 157 bath, blood vessels remained present at the gastric surface after anastomosis creation) and eliminated mortality. Additionally, BPC 157 treatment in combination with L-NAME nullified any effect of L-NAME that otherwise intensified the regular course. Consistently, with worsening(with L-NAME administration) and amelioration(with L-arginine), either L-arginine amelioration prevails(attenuated esophageal and gastric lesions) or they counteract each other(L-NAME + L-arginine); with the addi

关键词： Esophagogastric anastomosis L-NAME Aggravation BPC 157 L-arginine Curative treatment Rats

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

定子绕组绝缘直流试验的改进

国外大电机 2023年第4期 6-10页

作者： [加拿大]mladen Sasic 程立华(译) 陈阳(校) 不详

0引言。频繁使用直流(DC)高电压试验来评估定子绕组的状况。相比于50Hz/60Hz,直流高电压试验的优势:试验设备的尺寸更小,局部放电量更小,在绝缘质量较差的情况下失效风险更低。不同的直流试验方法包括:直流高电压(HIPOT)试验、极化指数... 详细信息

0引言。频繁使用直流(DC)高电压试验来评估定子绕组的状况。相比于50Hz/60Hz,直流高电压试验的优势:试验设备的尺寸更小,局部放电量更小,在绝缘质量较差的情况下失效风险更低。不同的直流试验方法包括:直流高电压(HIPOT)试验、极化指数试验。

关键词：直流试验极化指数直流高电压高电压试验放电量定子绕组绝缘质量试验设备

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

甘蓝型油菜杂种优势遗传分析(英文)

甘蓝型油菜杂种优势遗传分析(英文)