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73篇 您的检索式:作者名="Bakary"
    题名 作者 年代 出处 被引量
1激光切割单板的理论工艺参数求解与试验验证显示文摘【目的】 利用固体激光器切割单板,获取合理的切割工艺参数,降低切缝宽度以减少锯路损失,保证单板切口断面平整度。【方法】 从激光脉冲能量角度建立激光切割单板数学模型,获得激光输出功率(Pb)与激光切割速度(v)之间的关系表达式。以厚度0.3 mm、含水率10%的黑胡桃单板为加工对象,选取2组激光输出功率进行试验验证,每组激光输出功率在6种不同切割速度下切割,理论切割速度在6种试验切割速度范围内,加工后多次测量直线切缝宽度取平均值,在40×10光学显微镜下观察切割后试件切缝宽度及切口断面平整度,找出最优试验结果对应的切割速度,并与计算的理论切割速度进行对比。【结果】 第1组激光输出功率(脉冲电压400 V,单脉冲能量96.5 mJ,脉冲频率10 Hz)下,当切割速度为2.5 mm·s^-1时可保证单板切缝被完全切透,形成连续完整的切缝,切缝宽度最窄,平均值为0.544 mm,锯路损失最小,且切口断面较为平整;第2组激光输出功率(脉冲电压500 V,单脉冲能量198.2 mJ,脉冲频率10 Hz)下,当切割速度为5.0和5.5 mm·s^-1时可保证单板切缝被完全切透,切缝宽度最窄,平均值分别为0.69和0.62 mm,且切口断面也较为平整。对比2组试验数据得出,当切割速度与理论切割速度接近时,单板切口连续,切缝宽度最小;当切割速度低于理论切割速度时,切缝宽度逐渐增大;当切割速度高于理论切割速度时,切口容易出现不连续现象。【结论】 利用固体激光器切割单板时,切割工艺参数对切缝宽度和切口断面平整度具有直接影响,合理的切割工艺参数对获得较小的切缝宽度至关重要,每个激光器的输出功率对应着最佳切割速度,在实际加工过程中,应保证切割速度与理论切割速度一致或接近,以使切割效果更好。杨春梅 刘清伟 李响 缪骞 马岩 Doumbia Bakary 任长清 2019林业科学2019,55,12:2
2Postmenopausal endom etrial cancer screening: is there a correlation between trans-vaginal sonographic measurement of endometrial thickness and body mass index? 显示文摘Guven MA Pata O Bakaris S 2004Eur J Gynaecol Oncol2004,25,:1
3The bacteraemia of disseminated tuberculosis among HIV infected patients with prolonged fever in Tanzania显示文摘Munseri PJ Talbot EA Bakari M etal 2011Scand J Infect Dis2011,43,9:1
4Case of large placental chorioangioma associated with diffuse neonatal hemangiomatosis显示文摘BAKARIS S KARABIBER H YUKSEL M 2004Pediatr Dev Pathol2004,61,:1
5Resistance to the root-knot nematode Meloidogyne f allax in Solanum sparsipilum: analysis of the mechanisms 显示文摘KOUASSI ABOU BAKARI KERLAN MARIE-CLAIREl SOBCZAK MIROSLAW 2004Nematology2004,6,3:1
6Multimodular multilevel converters with input/output linearity显示文摘Bakari Mwinyiwiwa 1997IEEE Trans on Industry Applications1997,33,5:1
7Expression of cyclooxygenase-2 and its relation to histological grade, inducible nitric oxide syn- thase, matrix metalloproteinase-2, CD-34, Caspase-3, and CD8 in invasive ductal carcinoma of the breast显示文摘Atik E Akansu B Bakaris S 2010Saudi MedJ2010,31,2:1
8Huorine-18 fluorodeoxyglu- cose positron emission tomography-computed tomngraphy in monitoring the response of breast cancer to neoadjuvant chemotherapy: a meta-a-nalysis显示文摘Mghanga FP Lan X Bakari KH 2013Clin Breast Cancer2013,13,4:1
9Cross‐Cultural Pragmatics: Strategy Use in Egyptian Arabic and American English Refusals显示文摘Gayle L. Nelson Joan Carson Mahmoud Al Batal Waguida El Bakary 2002Applied Linguistics2002,,:1
10Post transplantation diabetes mellitus in kidney allograft recipients:current concepts显示文摘Nwnnkwo EA Bakari AA Ene AC 0,,:1
11Microprocessor-Implemented SPWM for multiconverters with phase-shifted triangle carriers显示文摘BAKARI M ZBIGNIEW W BOON-TECK O 1998IEEE Trans on Ind Appl1998,34,3:1
12Performance assessment of the FAO AquaCrop model for irrigated cabbage on farmer plots in a semi-arid environment显示文摘Joost Wellens Dirk Raes Farid Traore Antoine Denis Bakary Djaby Bernard Tychon 2013Agricultural Water Management2013,,:1
13Case of large placental chorioangioma associated with difuse neonatal hemangiomatosis显示文摘Bakaris S Karabiber H Yuksel M 0,,03:1
14Estimation of genetic parameters and pre- diction of breeding values for apple fruit-quality traits using pedigreed plant material in Europe显示文摘Abou Bakari Kouassi Charles Eric Durel Franois Laurens 2009Tree Genet- ics & Genomes2009,5,:1
15Determining the optical properties of highly oriented fibres using a multiple-beam technique显示文摘A A Hamza T Z N Sokkar M A E1 Bakary 2001J Opt A: Pure & Appl Opt2001,3,5:1
16Case of large placental chorioangioma associated with diffuse neonatal hemangiomatosis显示文摘Bakaris S Karabiber H Yuksel M 0,,03:1
17Heart rate varia- bility in patients with atrial septal defect and healthy children 显示文摘BAKARI S KOCA B OZTUNC F 2013J Cardiol2013,61,6:1
18Performance assessment of the FAO AquaCrop model for irrigated cabbage on farmer plots in a semi-arid environment显示文摘Joost Wellens Dirk Raes Farid Traore Antoine Denis Bakary Djaby Bernard Tychon 2013Agricultural Water Management2013,,:1
19Rate of decline of absolute number and percentage of CD4 T lymphocytes among HIV-1-infected adults in Dar es Salaam,Tanzania显示文摘Urassa W Bakari M Sandstrom E 2004AIDS2004,18,3:1
20Analysis of the presence of cutaneous and mucosal papillomavirus types in ductal lavage fluid, milk and colostrum to evaluate its role in breast carcinogenesis显示文摘Massimiliano Cazzaniga Tarik Gheit Chiara Casadio Noureen Khan Debora Macis Francesco Valenti Mara Jo Miller Bakary S. Sylla Suminori Akiba Bernardo Bonanni Andrea Decensi Umberto Veronesi Massimo Tommasino 2009Breast Cancer Research and Treatment2009,,3:1
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