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国外医学（生物医学工程分册） 1993年第3期16卷 166-168页

作者： Gorden D o L 佟松

在沿血管的线性流动中,由于管壁对流体(如血液或血浆)的粘性拖力,使得相邻液层之间相对运动(剪切)。在线性流动中,速度曲线是抛物线形的,在轴线处速度最大,在管壁处切应力(及剪切率)最大。Hagen-Posieuille方程表示线性流动中。

关键词：全血粘度心脏血管疾病

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高燃烧压力柴油机气缸盖垫片的最佳密封设计

汽车与新动力 1995年第6期 30-36页

作者： Aizawa o Yakushiji M 朱炳全

近年来,随着货运车用高增压柴油机开发的不断增加,对气缸盖垫片气体密封能力的要求愈来愈严。介绍一种在结构上能使发动机运转时缸内压力变化引起的气缸盖与机体之间的活动幅度和气缸盖垫片接触压力变动最小的气缸盖垫片优化设计的若干... 详细信息

近年来,随着货运车用高增压柴油机开发的不断增加,对气缸盖垫片气体密封能力的要求愈来愈严。介绍一种在结构上能使发动机运转时缸内压力变化引起的气缸盖与机体之间的活动幅度和气缸盖垫片接触压力变动最小的气缸盖垫片优化设计的若干要求。为了研究各密封部位的结构与活动幅度和气缸盖垫片接触压力变动的相互关系,在以下三个不同位置试验观察了气缸盖与机体之间的活动幅度和接触压力的变化:气体密封区边缘附近;气缸盖螺栓孔附近;气缸盖垫片本体周边附近。试验发现,对于能使缸内压力变化的影响减至最小的气缸盖垫片最佳设计,不仅必须在气体密封包边上施加足够的密封压力,而且还必须在气缸盖垫片的周边提供恰当的接触压力。

关键词：增压柴油机气缸垫设计

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时滞微分方程的缓振荡解

Northeastern Mathematical Journal 1999年第2期15卷 217-222页

作者： N.Yousfi o.Arino

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柑桔体细胞杂种对柑桔脚腐病的抗病性研究

植物病理学报 1997年第4期27卷 361-364页

作者：周长河邓秀新 Grosser J.o.W 华中农业大学柑桔研究所美国弗罗里达大学柑桔研究与教育中心

本文采用叶片接种法和枝条接种法对２５个柑桔种类体细胞杂种或品种进行了抗脚腐病鉴定，结果表明：体细胞杂种中枳＋酸橙、枳＋甜橙为高抗类型；酸橙＋兰普来檬、枳＋印度酸桔；蚝壳刺＋哈姆甜橙、酸橙＋澳洲指桔为抗性；酸橙＋印度酸... 详细信息

本文采用叶片接种法和枝条接种法对２５个柑桔种类体细胞杂种或品种进行了抗脚腐病鉴定，结果表明：体细胞杂种中枳＋酸橙、枳＋甜橙为高抗类型；酸橙＋兰普来檬、枳＋印度酸桔；蚝壳刺＋哈姆甜橙、酸橙＋澳洲指桔为抗性；酸橙＋印度酸桔为中抗。建立了叶片接种法的抗病性分级标准。初步分析了柑桔体细胞杂种的抗性规律。

关键词：柑桔体细胞杂种脚腐病抗病性柑桔类果树

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假说检验和科学方法(英文)

动物学报 2008年第2期54卷 383-386页

作者： Jerry o.WoLFF Charles J.KREBS Department of Biological Sciences St.Cloud State UniversitySt.CloudMN 56301USA Department of Zoology University of British ColumbiaVancouverB.C.V6T 1Z4Canada

本文的意图是让研究者审视研究方法,并在研究设计中充分使用假说检验,并在选择模式物种时充分理解其自然史。我们的总前提是,按照"强推论"(指假定拒绝某一假说而不是支持某一偏爱假说)的逻辑,科学能够进展得更快、更可观、更有确定性。... 详细信息

本文的意图是让研究者审视研究方法,并在研究设计中充分使用假说检验,并在选择模式物种时充分理解其自然史。我们的总前提是,按照"强推论"(指假定拒绝某一假说而不是支持某一偏爱假说)的逻辑,科学能够进展得更快、更可观、更有确定性。我们强调并提供了符合逻辑的一系列步骤,即确定科学问题或确定具有未知生物学意义的问题;列出所有可靠的、能解释所观察现象的假说,每个假说列出其可检验的、可证明其无根据的预测;然后是符合预测检验的实验或研究设计。我们也强调,模式物种对于解决科学的理论问题以及得出推论是很重要的。本文所展示的不是新思想,只是提醒研究者要注意遵循的基本研究途径。

关键词：假说检验科学方法

ANALYSIS oN PECULIARITIES oF "92.8"FLooD EVENTIN THE LoWER YELLoW RIVER

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International Journal of Sediment Research 1999年第2期14卷 205-213页

作者： WANG Gang XU Mingquan (1,2 International Research and Training Center on Erosion and Sedimentation (IRTCES), P.o. Box 366, Beijing 100044, P.R. China)

From 7~th through 13~th, August, 1992, a series of heavy rainstorms took place in Shaanxi province. The rainfall moved from the north to the south in sequence, resulting in flood events in tributaries of the Middle Yelow River, such as Huangfuchuan, Kuye, Wuding, Yanhe, Beiluo, Jinhe and Weihe rivers. These floods, converged from various tributaries, propagated downstream and formed four continuing flood crests at Huayuankou Hydrometric Station in the Lower Yellow River with a max. peak discharge of 6260m3/s, which is referred as "92.8" flood. Although the peak discharge of 6260m3/s is a frequent one for the Lower Yelow Rived, the water stage reached 94.33m, the second record of the station, even 0.34m higher than that in 1982 when the peak discharge was 15300 m3/s. The "92.8" flood brought about a lot of damages, including inundation of 40000 ha of farmland on the floodplain of the Lower Yellow Rived The extremely high water stage, occurred in Huayuankou Hydrometric Station was caused directly by the previous deposition in main channel and unfavorable combination of incoming flow and sediment regime. But the primary cause is the change in incoming runoff and sediment load in the Lower Yellow River. Since the middle of 1980's remarkable reduction has taken place both in runoff and sediment load, and to some extent becomes definitely a tendency in furture. As some unforeseen troubles in flood control in Lower Yellow River might occur, more attention should be paid for it.

关键词： Yellow River Hyperconcentrated flood Discharge Level Changes in runoff and sediment load.

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整体车轮的疲劳裂纹扩展特性

国外铁道车辆 1991年第1期28卷 49-54页

作者： K.-o.Edel 韦苏来

本文介绍民主德国铁路对整体车轮疲劳裂纹扩展特性的研究情况。运用统计理论给出了修正的PARIS公式和参数,并建立了热冲击应力条件下车轮裂纹扩展的公式,为今后确定车轮轮辋的裂纹容许尺寸奠定了基础。

关键词：疲劳裂纹扩展车轮转向架列车

Importance of complementary data to histopathological image analysis of oral leukoplakia and carcinoma using deep neural networks

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Intelligent Medicine 2023年第4期3卷 258-266页

作者： Leandro Muniz de Lima Maria Clara Falcão Ribeiro de Assis Júlia Pessini Soares Tânia Regina Grão-Velloso Liliana Aparecida Pimenta de Barros Danielle Resende Camisasca Renato Antonio Krohling Nature-inspired Computing Lab Federal University of Espirito SantoVitoriaBrazil Graduate Program in Computer Science Federal University of Espirito SantoVitoriaBrazil School of Dentistry Departamento de Clinica OdontologicaFederal University of Espirito SantoVitoriaBrazil Graduate Program in Clinical Dentistry Federal University of Espirito SantoVitoriaBrazil

Background oral cancer is one of the most common types of cancer in men causing mortality if not *** recent years,computer-aided diagnosis(CAD)using artificial intelligence techniques,in particular,deepneural networks have been investigated and several approaches have been proposed to deal with the automateddetection of various pathologies using digital *** studies indicate that the fusion of images with thepatient’s clinical information is important for the final clinical *** such dataset does not yet exist fororal cancer,as far as the authors are aware,a new dataset was collected consisting of histopathological images,demographic and clinical *** study evaluated the importance of complementary data to histopathologicalimage analysis of oral leukoplakia and carcinoma for *** A new dataset(NDB-UFES)was collected from 2011 to 2021 consisting of histopathological imagesand *** 237 samples were curated and analyzed by oral pathologists generating the gold standardfor ***-of-the-art image fusion architectures and complementary data(Concatenation,MutualAttention,MetaBlock and MetaNet)using the latest deep learning backbones were investigated for 4 distincttasks to identify oral squamous cell carcinoma,leukoplakia with dysplasia and leukoplakia without *** evaluate them using balanced accuracy,precision,recall and area under the RoC curve *** Experimental results indicate that the best models present balanced accuracy of 83.24%using images,demographic and clinical information with MetaBlock fusion and ResNetV2 *** represents an improvement in performance of 30.68%(19.54 pp)in the task to differentiate samples diagnosed with oral squamous cellcarcinoma and leukoplakia with or without *** This study indicates that cured demographic and clinical data may positively influence the performance of artificial intelligence models in automated classification of

关键词： Leukoplakia Squamous carcinoma Pathology Deep learning Transfer learning

Determination of dissolved selenium species in environmental samples

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Journal of Environmental Sciences 1989年第2期1卷 116-121页

作者： Wang Zijian and Peng An Research Center for Eco-Environmental Sciences,Academia Sinica,P.o.Box 934,Beijing 100083,China

This article reports on the technique for the determination of selenium at ppt level and the procedure for the speciation of dissolved selenium in the environmental samples. By combining the high-performance liquid chromatography (HPLC) and a fluorescent detector (FLD), this technique permits the determination of selenium at 0.001 μg/L for Se(IV) and 0.005 μg/L for Se(VI) and the total concentration of selenium for a sample volume of 20 ml. In the speciation procedure, Se(IV) is firstly determined based on the selectivity of 2, 4 - diaminonaphthalene (DAN), the Se (VI) and the total element concentration are determined after reduced to Se(IV) by boiling in 4 mol/L HCl and by digesting in HNo3-HClo4 mixture, respectively. Discussions are given on the relationship between selenium speciation in waters and soil water extract and solution pH, EH and total organic carbon concentration (ToC).

关键词： Selenium speciation HPLC.

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Inside the Bronchus

open Journal of Internal Medicine 2020年第2期10卷 239-243页

作者： Carina Rôlo Silvestre André Nunes Ricardo Cordeiro Daniel Duarte João Eusébio Teresa Falcão António Domingos Pulmonology Department Centro Hospitalar do Oeste Torres Vedras Portugal

Tumor necrosis factor inhibitors contribute to a greater susceptibility to infection or reactivation of Mycobacterium tuberculosis. Endobronchial tuberculosis has non-specific symptoms, which may delay the diagnosis. We report a case of a 21-year-old woman, with Crohn’s disease, medicated with adalimumab. The patient presented with a 2-week history of fever, dry cough, pleuritic chest pain and weight loss of 2 kg. Chest imaging showed bilateral nodular opacities, at the right pulmonary apex. Bronchoscopy revealed a tumorous lesion in the right upper bronchus. Bronchial biopsies were suggestive of chronic granulomatous inflammation. Bronchoalveolar lavage produced a positive for acid-fast bacilli smear and culture for Mycobacterium tuberculosis. We assumed the diagnosis of tuberculosis with endobronchial manifestations. Nowadays this is a rare manifestation. Empirical treatment for tuberculosis was initiated, with steroids as an adjunct therapy to prevent bronchostenosis, with clinical and radiological improvement.

关键词： Tuberculosis Crohn’s Disease TNF-α Inhibitors