|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Review of magnesium-based biomaterials and their applications显示文摘In biomedical applications,the conventionally used metallic materials,including stainless steel,Co-based alloys and Ti alloys,often times exhibit unsatisfactory results such as stress shielding and metal ion releases.Secondary surgical operation(s)usually become inevitable to prevent long term exposure of body with the toxic implant contents.The metallic biomaterials are being revolutionized with the development of biodegradable materials including several metals,alloys,and metallic glasses.As such,the nature of metallic biomaterials are transformed from the bioinert to bioactive and multi-biofunctional(anti-bacterial,anti-proliferation,anti-cancer,etc.).Magnesium-based biomaterials are candidates to be used as new generation biodegradable metals.Magnesium(Mg)can dissolve in body fluid that means the implanted Mg can degrade during healing process,and if the degradation is controlled it would leave no debris after the completion of healing.Hence,the need for secondary surgical operation(s)for the implant removal could be eliminated.Besides its biocompatibility,the inherent mechanical properties of Mg are very similar to those of human bone.Researchers have been working on synthesis and characterization of Mg-based biomaterials with a variety of composition in order to control the degradation rate of Mg since uncontrolled degradation could result in loss of mechanical integrity,metal contamination in the body and intolerable hydrogen evolution by tissue.It was observed that the applied methods of synthesis and the choice of components affect the characteristics and performance of the Mg-based biomaterials.Researchers have synthesized many Mg-based materials through several synthesis routes and investigated their mechanical properties,biocompatibility and degradation behavior through in vitro,in vivo and in silico studies.This paper is a comprehensive review that compiles,analyses and critically discusses the recent literature on the important aspects of Mg-based biomaterials. | Nurettin Sezer Zafer Evis Said Murat Kayhan Aydin Tahmasebifar Muammer Koça | 2018 | Journal of Magnesium and Alloys2018，6，1： | 38 |
| 2 | 新一代电子维护系统的系统框架显示文摘未来的制造工业必须能够适应全球化的企业竞争。对于复杂的设计制造行为 ,需要一种简便的管理集成系统的机制 ,在这方面 ,信息技术将会扮演一个不可或缺的角色。为了售后服务的需要 ,要提高对产品性能的理解 ,这将引起质量维护的电子智能化。随着产品、制造和维护系统中更好的电子智能集成 ,制造商和用户方都会从设备和工艺可靠性的提高中受益。 | Muammer Koc Jay Lee 邓军民 | 2001 | 中国机械工程2001，12，5： | 8 |
| 3 | Assessment of the correlation between serum prolidase and alpha-fetoprotein levels in patients with hepatocellular carcinoma显示文摘AIM: To determine the predictive value of increased prolidase activity that reflects increased collagen turnover in patients with hepatocellular carcinoma(HCC).METHODS: Sixty-eight patients with HCC(mean age of 69.1 ± 10.1), 31 cirrhosis patients(mean age of59.3 ± 6.3) and 33 healthy volunteers(mean age of51.4 ± 12.6) were enrolled in this study. Univariate and multivariate analysis were used to evaluate the association of serum α-fetoprotein(AFP) values with HCC clinicopathological features, such as tumor size,number and presence of vascular and macrovascular invasion. The patients with HCC were divided into groups according to tumor size, number and presence of vascular invasion(diameters; ≤ 3 cm, 3-5 cmand ≥ 5 cm, number; 1, 2 and ≥ 3, macrovascular invasion; yes/no). Barcelona-clinic liver cancer(BCLC)criteria were used to stage HCC patients. Serum samples for measurement of prolidase and alphafetoprotein levels were kept at-80 ℃ until use.Prolidase levels were measured spectrophotometrically and AFP concentrations were determined by a chemiluminescence immunometric commercial diagnostic assay.RESULTS: In patients with HCC, prolidase and AFP values were evaluated according to tumor size, number,presence of macrovascular invasion and BCLC staging classification. Prolidase values were significantly higher in patients with HCC compared with controls(P <0.001). Prolidase levels were significantly associated with tumor size and number(P < 0.001, P = 0.002,respectively). Prolidase levels also differed in patients in terms of BCLC staging classification(P < 0.001).Furthermore the prolidase levels in HCC patients showed a significant difference compared with patients with cirrhosis(P < 0.001). In HCC patients grouped according to tumor size, number and BCLC staging classification, AFP values differed separately(P = 0.032,P = 0.038, P = 0.015, respectively). In patients with HCC, there was a significant correlation(r = 0.616; P< 0.001) between prolidase and AFP values in terms of tumor size, number and BCLC staging classification,whereas the presence of macrovascular invasion did not show a positive association with serum prolidase and AFP levels.CONCLUSION: Considering the levels of both serum prolidase and AFP could contribute to the early diagnosing of hepatocellular carcinoma. | Sevil Uygun Ilikhan Muammer Bilici Hatice Sahin Ayse Semra Demir Akca Murat Can Ibrahim Ilker Oz Berrak Guven M Cagatay Buyukuysal Yucel Ustundag | 2015 | World Journal of Gastroenterology2015，21，22： | 8 |
| 4 | Prostate cancer upgrading or downgrading of biopsy Gleason scores at radical prostatectomy:prediction of'regression to the mean'using routine clinical features with correlating biochemical relapse rates显示文摘Recommendations for managing clinically localized prostate cancer are structured around clinical risk criteria,with prostate biopsy(PB)Gleason score(GS)being the most important factor.Biopsy to radical prostatectomy(RP)specimen upgrading/downgrading is welldescribed,and is often the ratio nale for costly imaging or genomic studies.We prese nt simple,no-cost an a lyses of clinical parametersto predict which GS 6 and GS 8 patients will change to GS 7 at prostatectomy.From May 2006 to December 2012,1590 patientsunderwent robot-assisted radical prostatectomy(RARP).After exclusions,we identified a GS 6 cohort of 374 patients and a GS 8cohort of 91 patients.During this era,>1000 additional patients were enrolled in an active surveillanee(AS)program.For GS 6,265(70.9%)of 374 patients were upgraded,and the cohort included 183(48.9%)patients eligible for AS by the Prostate Cancer ResearchInternational Active Surveillance Study(PRIAS)standards,of which 57.9%were upgraded.PB features that predicted a>90%chanceof upgrading included≥7 cores positive,maximum foci length≥8 mm in any core,and total tumor involvement≥30%.For GS 8,downgrading occurred in 46(50.5%),which was significantly higher for single core versus multiple cores(80.4%vs 19.6%,P=0.011).Biochemical recurre nee(BCR)occurred in 3.4%of GS 6 upgraded versus 0%non upgraded,and in GS 8,19.6%downgraded versus42.2%nondown graded.In coun seling men with clin ically localized prostate can cer,the odds of GS cha nge should be presented,andcertain men with high-volume GS 6 or low-volume GS 8 can be counseled with GS 7-based recommendations. | Muammer Altok Patricia Troncoso Mary F Achim Surena F Matin Graciela N Gonzalez John W Davis | 2019 | Asian Journal of Andrology2019，21，6： | 4 |
| 5 | Artificial neural network models predicting the leaf area index:a case study in pure even-aged Crimean pine forests from Turkey显示文摘Background: Leaf Area Index(LAI) is an important parameter used in monitoring and modeling of forest ecosystems. The aim of this study was to evaluate performance of the artificial neural network(ANN) models to predict the LAI by comparing the regression analysis models as the classical method in these pure and even-aged Crimean pine forest stands.Methods: One hundred eight temporary sample plots were collected from Crimean pine forest stands to estimate stand parameters. Each sample plot was imaged with hemispherical photographs to detect the LAI. The partial correlation analysis was used to assess the relationships between the stand LAI values and stand parameters, and the multivariate linear regression analysis was used to predict the LAI from stand parameters. Different artificial neural network models comprising different number of neuron and transfer functions were trained and used to predict the LAI of forest stands.Results: The correlation coefficients between LAI and stand parameters(stand number of trees, basal area, the quadratic mean diameter, stand density and stand age) were significant at the level of 0.01. The stand age, number of trees, site index, and basal area were independent parameters in the most successful regression model predicted LAI values using stand parameters(/?;adj = 0.5431). As corresponding method to predict the interactions between the stand LAI values and stand parameters, the neural network architecture based on the RBF 4-19-1 with Gaussian activation function in hidden layer and the identity activation function in output layer performed better in predicting LAI(SSE(12.1040), MSE(0.1223), RM5 E(0.3497), AIC(0.1040), BIC(-777310) and R2(0.6392)) compared to the other studied techniques.Conclusion: The ANN outperformed the multivariate regression techniques in predicting LAI from stand parameters. The ANN models, developed in this study, may aid in making forest management planning in study forest stands. | ilker Ercanli Alkan Gunlu Muammer Senyurt Sedat Keles | 2018 | Forest Ecosystems2018，5，4： | 4 |
| 6 | Fetal programming of polycystic ovary syndrome显示文摘Polycystic ovary syndrome(PCOS) is a common endocrine disorder that affects up to 6.8% of reproductive age women.Experimental research and clinical observations suggest that PCOS may originate in the very early stages of development,possibly even during intrauterine life.This suggests that PCOS is either genetically-transmittedor is due to epigenetic alterations that develop in the intrauterine microenvironment.Although familial cases support the role of genetic factors,no specific genetic pattern has been defined in PCOS.Several candidate genes have been implicated in its pathogenesis,but none can specifically be implicated in PCOS development.Hypotheses based on the impact of the intrauterine environment on PCOS development can be grouped into two categories.The first is the 'thrifty' phenotype hypothesis,which states that intrauterine nutritional restriction in fetuses causes decreased insulin secretion and,as a compensatory mechanism,insulin resistance.Additionally,an impaired nutritional environment can affect the methylation of some specific genes,which can also trigger PCOS.The second hypothesis postulates that fetal exposure to excess androgen can induce changes in differentiating tissues,causing the PCOS phenotype to develop in adult life.This review aimed to examine the role of fetal programming in development of PCOS. | Esra Bahar Gur Muammer Karadeniz Guluzar Arzu Turan | 2015 | World Journal of Diabetes2015，6，7： | 4 |
| 7 | 以抗坏血酸作协同试剂时红土镍矿在硫酸溶液中的溶解(英文)显示文摘研究硫酸与抗坏血酸联用对恰尔达红土镍矿中镍和钴的溶解作用。作为比较,也研究柠檬酸、马来酸和硬脂酸等有机酸作为协同试剂的应用情况。结果表明,抗坏血酸和柠檬酸的使用显著改善了钴的溶解,而其他两种有机酸对浸出率的协同作用很小。对于镍的溶解,抗坏血酸是最有效的协同试剂,其次是柠檬酸、马来酸和硬脂酸。在本研究获得的最优条件下,即1 mol/L硫酸中加入4 g/L抗坏血酸、80°C、固液比1/10,浸出4 h后钴和镍的浸出率分别达到99%和98%以上。此外,浸出行为对抗坏血酸浓度的变化(2~4 g/L)较不敏感,这从操作角度来看是非常理想的。 | Sait KURSUNOGLU Zela Tanlega ICHLAS Muammer KAYA | 2018 | Transactions of Nonferrous Metals Society of China2018，28，8： | 3 |
| 8 | 采用硫酸浸出和添加酒石酸钾钠的氢氧化钠浸出从Yahyali非硫化浮选尾矿中回收锌和铅显示文摘采用硫酸浸出和添加酒石酸钾钠的氢氧化钠浸出从Yahyali非硫化浮选尾矿中回收锌和铅。在酸浸阶段,研究pH值、固液比和温度对尾矿中锌溶出的影响。在pH值为2、温度为40°C、固液比为20%、浸出时间为2 h的条件下,锌的溶出率达到82.3%,而铁和铅的溶出率低于0.5%。硫酸消耗量为110.6 kg/t(干尾矿)。浸出温度对尾矿中锌的溶出无有益的影响。酸浸液的电积试验结果表明,阴极产物含99.8%的Zn和0.15%的Fe。在碱浸阶段,添加酒石酸钾钠时铅的溶出率略有增加,浸出温度从40°C升高到80°C时,超过60%的Pb进入浸出液中。利用XRD和XRF分析最终的浸出渣。XRD分析结果表明,主要衍射峰来自针铁矿和石英,次要衍射峰属于菱锌矿和白铅矿。XRF分析结果显示,浸出渣含有70.3%的氧化铁。基于顺序浸出实验结果,浮选尾矿中的锌和铅可以被很好地浸出,而大量的铁留在浸出渣中。 | Sait KURSUNOGLU Soner TOP Muammer KAYA | 2020 | Transactions of Nonferrous Metals Society of China2020，30，12： | 3 |
| 9 | Dissolution behavior of Caldag lateritic nickel ore subjected to a sequential organic acid leaching method显示文摘The dissolution behavior of Caldag lateritic nickel ore subjected to a sequential organic acid leaching method was investigated. The effects of the type of organic acid, acid concentration, leaching time, and leaching temperature on the lateritic nickel ore were examined. Organic acids were used individually prior to sequential leaching. Citric acid was more effective than the other two acids for the selective leaching of nickel and cobalt. An increase in the citric acid concentration negligibly affected the dissolution of the metals, whereas temperature exhibited a strong beneficial effect. Oxalic acid was determined to be the most appropriate organic acid for the second leaching step. After 8 h(4 h + 4 h) of leaching with organic acids(0.5 M citric + 0.5 M oxalic) in sequence at 90°C, 89.63% Ni, 82.89% Co, and 69.63% Fe were leached from the lateritic nickel ore. A sequential citric + oxalic acid leaching method could represent a viable alternative for the dissolution of metals from lateritic nickel ore. | Sait Kursunoglu Muammer Kaya | 2015 | International Journal of Minerals,Metallurgy and Materials2015，22，11： | 2 |
| 10 | Do lifestyle changes work for improving erectile dysfunction?显示文摘可勃起的机能障碍(编辑) 的主要原因在自然是器官的,与是的脉管的病原学最普通的风险因素。尽管在编辑和几个认出得好的风险因素之间的关系上有足够的数据,包括老化,冠的动脉疾病,动脉粥样硬化,糖尿病, dyslipidemia ,高血压,和骨盆的手术,很少注意都没被泌尿科医师然而在编辑对生活方式因素的角色给予了,积累从基本科学的数据,临床的研究决定了在编辑和很多个生活方式因素的出现之间的一个连接,例如吸烟,肥胖,白酒消费,并且物理活动缺乏。从到关于生活方式因素的修正的临床的实践的动物和人的研究的调查结果的应用程序能象减少得心血管的疾病的风险一样帮助改善编辑。这通讯在可勃起的功能和修改这些因素在尊重改进编辑到当前的证据的潜在的好处上探讨生活方式因素的影响。 | Kaya Horasanli Ugur Boylu Muammer Kendirci Cengiz Miroglu | 2008 | Asian Journal of Andrology2008，10，1： | 2 |
| 11 | A prognostic algorithm for machine performance assessment and its application 显示文摘 | Yan Jihong Muammer Koc Lee Jay | 2004 | Production Planning & Control2004，15，8： | 1 |
| 12 | An overall review of the tube Hydrofonning ( IHF) technology 显示文摘 | Muammer K Altan T | 2001 | Journal of Materials Processing Technolo?gy2001，108，： | 1 |
| 13 | The effect of cutting speed and cuting tool geometry on machinability priperties of Inconel718显示文摘 | Muammer N Abdullah A Hasan | | 0，，： | 1 |
| 14 | Potential of Dual Time Point FDG-PET Imaging in Differentiating Malignant from Benign Pleural Disease显示文摘 | Ayse Mavi Sandip Basu Tevfik F. Cermik Muammer Urhan Mehdi Bathaii Dhurairaj Thiruvenkatasamy Mohamed Houseni Simin Dadparvar Abass Alavi | 2009 | Molecular Imaging and Biology2009，，5： | 1 |
| 15 | A review of cryogenic cooling in ma- chining processes显示文摘 | Yakup Yildiz Muammer Nalbant | 2008 | Machine Tools & Manufacture2008，48，： | 1 |
| 16 | Prediction of forming limits and parameters in the tube hydroforming process 显示文摘 | Muammer Koc Taylan Ahan | 2002 | International Journal of Machine Tools & Manufacture2002，42，1： | 1 |
| 17 | Feasibility investiga- tions on a novel mico-manufacturing process for fabrication of fuel cell bipolar plates:internal pressure-assisted embossing of micro-channels with in-die mechanical bonding 显示文摘 | Muammer Koc Sasawat Mahabunphachai | 2007 | Journal of Power Sources2007，172，： | 1 |
| 18 | ,An overall of the tube hydroformig(THE) technology,Journal of Materials Processing Technology显示文摘 | Muammer Koc | | 1080，，： | 1 |
| 19 | Primary leiomyosarcoma of the breast显示文摘 | Serdar U?ra? Osman Nuri Dilek Muammer Karaayvaz Hüsniye Dilek ?nder Peker | 1997 | Surgery Today1997，，11： | 1 |
| 20 | Fabrication of micro- channel arrays on thin metallic sheet using internal fluid pres- sure:Investigations on size effects and development of design guidelines显示文摘 | Sasawat Mahabunphachai Muammer Koc | 2008 | Journal of Power Sources2008，175，1： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员