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Is there a connection between synthetic bone grafts and sisters chromatide exchange?

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Open Journal of Stomatology 2013年第8期3卷 447-451页

作者： banu Gurkan Koseoglu Amila Brkic Mehmet Ali Erdem Sukru Ozturk Sukru Palanduz Kivanc Cefle Department of Oral and Maxillofacial Surgery School of DentistryIstanbul UniversityIstanbulTurkey Department of Oral Surgery School of DentistrySarajevo UniversitySarajevoBosnia and Herzegovina Division of Medical Genetics Department of Internal MedicineSchool of MedicineIstanbul UniversityIstanbulTurkey

Background: In oral and maxillofacial surgery, synthetic bone grafts are most widely used as bone substitutes, due to the limited sources of autologous bone. The aim of this study was to examine the influence of three different synthetic bone grafts (Cerasorb, Fortoss and Perioglass) on sisters chromatide exchanges (SCEs) in peripheral lymphocytes. Materials and Methods: Peripheral blood samples taken from 68 patients (45 females and 23 males), who underwent oral surgery procedures, such as apical resection, cyst enucleation or periodontal curretage, were obtained for SCE a day before and two months after the surgeries. A control group included 30 patients, while the study group was made of the patients who underwent bone grafting with Cerasorb? (11 patients), Fortoss? VITAL (10 patients) or Perioglass? (17 patients). Results: Comparing with the results of the study group before and after the treatment, it was concluded that the results were statistically significant (p = 0.001). In the Perioglass? subgroup, a greater statistical significance (p = 0.003) was noted, than that in either the Cerasorb? (p = 0.620) or Fortoss? (p = 0.210) subgroups, in which there was no statistical significance. Conclusions: Although further investigations may be necessary, our results suggest that the synthetic bone grafts might have an influence on SCE in peripheral lymphocytes.

关键词： Bone Graft Sisters Chromatide Exchange Genotoxic Bone Defect

Performance Enhancement Architecture of VoIP Applications in Multiprotocol Label Switching Networks

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Circuits and Systems 2016年第8期7卷 2047-2058页

作者： J. Faritha banu K. G. Shanthi P. Lakshmi Priya M. Faritha Begum Department of Computer Science and Engineering R M K Engineering College Chennai India Department of Electronics and Communication Engineering R M K Engineering College Chennai India Department of Computer Science and Engineering R M K College of Engineering and Technology Chennai India Department of Computer Science and Engineering Pavai College of Technology Namakkal India

In recent years, Voice over IP (VoIP) has impacted global telecommunications and networking tremendously. Traffic engineering and Quality of Service (QoS) guarantees for VoIP services pose a challenge for network researchers and designers. The repeated use of Internet Protocol shortest path towards the same destination may lead to unbalanced traffic situations and degraded network performance. Therefore, load balancing and link utilization become the critical functions in Internet Protocol routing for providing Quality of Service assurance for VoIP application. The aim of this work is to employ Multiprotocol Label Switching Network as a traffic engineering tool to enhance the QoS for VoIP applications. To achieve this, an effective Multiprotocol Label Switching Network load balancing architecture is developed that classifies the Internet traffic flows, routes the flows into multiple paths. Flow arrival rate, packet loss rate and delay are measured and taken as the input parameters and compared with the threshold values to identify the VoIP flow. Network load status is calculated by estimating the average buffer occupancy value and multipath routing is triggered when the network load is high to enhance the QoS. The investigated performance measures like throughput, delay and packet loss are reported to show the efficiency of the proposed technique for effective VoIP flows.

关键词： MPLS Load Balancing VoIP QoS Multipath Routing

Synthesis, Spectroscopy and X-Ray Crystal Structure of 9-Methyl-3-Thiophen-2-Yl-Thieno [3, 2-e] [1, 2, 4] Triazolo [4, 3-c] Pyrimidine-8-Carboxylic Acid Ethyl Ester

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American Journal of Analytical Chemistry 2011年第3期2卷 371-375页

作者： Nikhath Fathima Mohamed Ziaulla Afshan banu Shridhar Ishwar Panchamukhi Imtiyaz Ahmed Khazi Noor Shahina Begum 不详

The Preparation of 9-Methyl-3-thiophen-2-yl-thieno [3, 2-e] [1, 2, 4] triazolo [4, 3-c] pyrimi-dine-8-carboxylic acid ethyl ester is described. Elemental analysis, IR spectrum, 1H NMR, 13C NMR and X-ray crystal structure analyses were carried out to determine the composition and molecular structure of the title compound. There are two independent molecules in the asymmetric unit exhibiting intermolecular C-H…N, C-H…O interactions with additional π-π interaction that further helps in stabilizing the supramolecular structure. The results showed that the proposed method for synthesis is simple, precise and accurate which was further confirmed by crystal structure analysis.

关键词： Thieno-Triazolo-Pyrimidine Derivative Characterization X-Ray Crystallographic Analysis C-H…N C-H…O and π-π Weak Interactions

Prevalence of microscopic colitis in patients with diarrhea of unknown etiology in Turkey

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World Journal of Gastroenterology 2008年第27期14卷 4319-4323页

作者： Levent Erdem Sadιk Yιldιrιm Nihat Akbayιr banu Yιlmaz Necati Yenice Orhan Sami Gültekin nder Peker Department of Gastroen-terology Sisli Etfal Teaching and Research Hospital Department of General Surgery Sisli Etfal Teaching and Research Hospital Department of Pathology Sisli Etfal Teaching and Research Hospital Department of Gastroenterology Okmeydanι Teaching and Research Hospital Endotιp Private Endoscopy Center Department of Pathology Haydarpasa Numune Teaching and Research Hospital

AIM: To investigate the prevalence and demography of microscopic colitis in patients with diarrhea of unknown etiology and normal colonoscopy in Turkey. METHODS: Between March, 1998 to July, 2005, 129 patients with chronic non-bloody diarrhea of unexplained etiology who had undergone full colonoscopy with no obvious abnormalities were included in the study. Two biopsies were obtained from all colonic segments and terminal ileum for diagnosis of microscopic colitis. On histopathologic examination, criteria for lymphocytic colitis (intraepithelial lymphocyte ≥ 20 per 100 intercryptal epithelial cells, change in surface epithelium, mononuclear infiltration of the lamina propria) and collagenous colitis (subepithelial collagen band thickness ≥ 10 μm) were explored. RESULTS: Lymphocytic colitis was diagnosed in 12 (9%) patients (Female/Male: 7/5, mean age: 45 year, range: 27-63) and collagenous colitis was diagnosed in only 3 (2.5%) patients (all female, mean age: 60 years, range: 54-65).CONCLUSION: Biopsy of Turkish patients with the diagnosis of chronic non-bloody diarrhea of unexplained etiology and normal colonoscopic findings will reveal microscopic colitis in approximately 10% of the patients. Lymphocytic colitis is 4 times more frequent than collagenous colitis in these patients.

关键词： Diarrhea of unknown etiology Microscopiccolitis Lymphocytic colitis Collagenous colitis

新型经脉络膜上腔引流房水植入装置Suprajet的疗效观察（英文）

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国际眼科杂志 2017年第10期17卷 1807-1811页

作者： Uzeyir Gunenc Gul Arikan Ferim Gunenc banu Lebe Sitki Eren Elvan Ocmen Arif Taylan Ozturk 度库兹埃路尔大学医学院眼科土耳其伊兹密尔35340 度库兹埃路尔大学医学院麻醉和重症监护科土耳其伊兹密尔35340 度库兹埃路尔大学医学院病理科土耳其伊兹密尔35340

目的:评估一种由睫状体前和脉络膜上腔引流房水的新型植入装置Suprajet的有效性和安全性。方法:该项研究使用5只兔子。每只兔子的一眼植入Suprajet。引流器通过位于上方的透明角膜切口,经由前房置入脉络膜上腔。引流器近端位于睫状体根... 详细信息

目的:评估一种由睫状体前和脉络膜上腔引流房水的新型植入装置Suprajet的有效性和安全性。方法:该项研究使用5只兔子。每只兔子的一眼植入Suprajet。引流器通过位于上方的透明角膜切口,经由前房置入脉络膜上腔。引流器近端位于睫状体根部,远端位于脉络膜上腔。兔子饲养、观察4wk。使用Tonopen AVIA测量术前和术后的眼压。最后一次随访观察时,兔子被牺牲处死,眼球摘除,进行大体上和组织学的观察评估。结果:术前眼压为18.6±6.1mmH g。术后1wk眼压为8.4±1.1mmH g。术后2wk 1只兔子死亡。因此,仅有4只兔子进行了后续观察。术后2wk眼压为11.0±2.8mmH g,术后3wk为9.50±3.1mmH g,术后4wk为11.3±3.3mmH g。与术前平均眼压相比,仅第1周的平均眼压显著降低(P=0.042),术后2wk、3wk和术后4wk的平均眼压无明显变化(P=0.66,P=0.66,P=0.102)。术中并发症包括3眼少量出血。术后2d出血已经完全吸收。对摘除眼球的大体观察发现,1眼中引流器的远端位于玻璃体内,而不是位于脉络膜上腔;其它3眼引流器的远端位于脉络膜上腔。所有眼中,近端都位于前房角。对摘除眼的组织学检查发现:不规则的胶原蛋白束和纤维沉积,包括引流器周围大量的成纤维细胞和组织细胞。结论:这一项初始动物研究显示,青光眼中Suprajet植入是一项有前景的术式。需要进行更进一步的研究以评估其有效性和安全性。

关键词：青光眼引流器脉络膜上腔

Nanotechnological Applications in Aquaculture-Seafood Industries and Adverse Effects of Nanoparticles on Environment

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材料科学与工程（中英文版） 2011年第5期5卷 605-609页

作者： Erkan Can Volkan Kizak Murathan Kayim Safak Seyhaneyildiz Can banu Kutlu Mehmet Ates Mehmet Kocabas Nida Demirtas Fisheries Faculty Tunceli University Tunceli 62000 Turkey Tunceli Vocational School Tunceli University Tunceli 62000 Turkey

Childhood diabetes in a Bangladeshi population

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Journal of Diabetes Mellitus 2013年第1期3卷 33-37页

作者： M. Abu Sayeed Mir Masudur Rhaman Nurunnahar Fayzunnessa Parvin Akter Khanam Tanjima Begum Hajera Mahtab Akhter banu Community Medicine Ibrahim Medical College Dhaka Bangladesh Epidemiology and Biostatistics Bangladesh Institute of Research and Rehabilitation in Diabetes Endocrine and Metabolic Disorders Dhaka Bangladesh Epidemiology and Biostatistics Bangladesh Institute of Research and Rehabilitation in Epidemiology and Biostatistics Bangladesh Institute of Research and Rehabilitation in Diabetes Endocrine and Metabolic Disorders Dhaka Bangladesh Institute of Nutrition and Food Science University of Dhaka Dhaka Bangladesh

Backgrounds and Aims: Several epidemiological investigations revealed that the prevalence of Type 2 Diabetes Mellitus (T2DM) has been increasing in the adult population of Bangladesh. But the prevalence of diabetes among the children and adolescents in Bangladesh has not been reported. This study addressed the prevalence of diabetes among the younger people in Bangladesh. Subjects and Methods: We investigated school children of age group 10 - 18 years in rural, suburban and urban communities. Investigations included socio-demographic information, height, weight, mid-upper-arm circumference (MUAC), blood pressure (SBP, DBP) and fasting plasma glucose (FPG). We used WHO criteria (1999) for impaired fasting glucose (IFG) and diabetes mellitus (T2DM). Results: A total of 2152 students (boys/girls: 1064/1088) volunteered the study. Their mean (SD) age was 13.3 (2.0) y, BMI was 18.5 (3.1) and MUAC was 21.2 (3.4) cm. The mean (SD) of FPG was 4.6 (0.87) mmol/l. The prevalence of IFG (95% CI) was 3.4% (2.63 - 4.17) and T2DM was 1.8% (1.23 - 2.37). BMI showed no association with FPG in either sex. In assessing risk for hyperglycemia (FPG > = 5.6mmol/l), logistic regression showed [odds ratio (OR) with 95% CI] that compared with lower age (16 y) higher age had excess risk (OR 5.2, 2.92 - 9.23). Compared with the rural the urban children had higher risk (OR 14.7, 6.41 - 33.78). Higher family income was also found to have higher risk (BDT 8000: OR 2.03, 1.30 - 3.18);whereas, higher BMI and MUAC were proved to be not significant. Conclusions: The prevalence of IFG and T2DM in Bangladeshi children and adolescents appears to be high. The urban children from the higher family income are the most vulnerable for developing diabetes, obesity and hypertension. A prospective cohort including other variables like physical activities, waist-girth, insulin or macro-/micronutrients may explain which risk factors are significant for developing diabetes among children and adolescents in Bangla

关键词： Type 2 Diabetes Mellitus Impaired Fasting Glucose Family Income Geographical Area

Gait Based Human Recognition with Various Classifiers Using Exhaustive Angle Calculations in Model Free Approach

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Circuits and Systems 2016年第8期7卷 1465-1475页

作者： S. M. H. Sithi Shameem Fathima R. S. D. Wahida banu S. Mohamed Mansoor Roomi Department of ECE Syed Ammal Engineering College Ramanathapuram India Department of ECE Government College of Engineering Salem India Department of ECE Thiagarajar College of Engineering Madurai India

Human Gait recognition is emerging as a supportive biometric technique in recent years that identifies the people through the way they walk. The gait recognition in model free approaches faces the challenges like speed variation, cloth variation, illumination changes and view angle variations which result in the reduced recognition rate. The proposed algorithm selected the exhaustive angles from head to toe of a person, and also height and width of the same subject. The experiments were conducted using silhouettes with view angle variation, and cloth variation. The recognition rate is improved to the extent of 91% using Support vector machine classifier. The proposed method is evaluated using CASIA Gait Dataset B (The institute of Automation, ChineseAcademy of Sciences), China. Experimental results demonstrate that the proposed technique shows promising results using state of the art classifiers.

关键词： Gait Recognition CASIA Gait Dataset B Classifiers

均相和非均相催化微藻脂质提取和酯交换制备生物燃料的研究进展

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Chinese Journal of Catalysis 2024年第4期59卷 97-117页

作者： Vinoth Kumar Ponnumsamy Hussein E.Al-Hazmi Sutha Shobana Jeyaprakash Dharmaraja Dipak Ashok Jadhav Rajesh banu J Grzegorz Piechota Bartłomiej Igliński Vinod Kumar Amit Bhatnagar Kyu-Jung Chae Gopalakrishnan Kumar 高雄医科大学药物与应用化学系环境医学研究中心中国台湾高雄高雄医科大学医学研究部中国台湾高雄格但斯克理工大学土木与环境工程学院波兰纳鲁特维察格但斯克范朗大学工程与技术学院建筑绿色技术与可持续发展研究组越南胡志明市工程技术学院科学与人文系化学部印度泰米尔纳德邦韩国海洋大学海洋科学与工程学院环境工程系韩国釜山泰米尔纳德邦中央大学生命科学系印度泰米尔纳德邦 GPCHEM沼气研究与分析实验室波兰尼古拉斯哥白尼大学化学系波兰克兰菲尔德大学水与能源学院英国拉彭兰塔工业大学工程科学学院分离科学系芬兰韩国海洋大学海洋可再生能源工程专业韩国釜山延世大学土木与环境工程学院韩国首尔斯塔万格大学科学技术学院化学、生物科学与环境工程研究所挪威斯塔万格

随着化石燃料燃烧导致的二氧化碳排放不断加剧气候变化,且化石燃料储量日益减少,寻求可再生能源已成为一项紧迫的任务.其中,藻类衍生可持续燃料因具有成本优势和可运输性,在解决全球能源危机方面展现出广阔前景,备受关注.利用化学转化... 详细信息

随着化石燃料燃烧导致的二氧化碳排放不断加剧气候变化,且化石燃料储量日益减少,寻求可再生能源已成为一项紧迫的任务.其中,藻类衍生可持续燃料因具有成本优势和可运输性,在解决全球能源危机方面展现出广阔前景,备受关注.利用化学转化技术从微藻中提取脂质,并通过酯交换反应可以将其转化为脂肪酸甲酯,是生产绿色生物燃料的有效途径.这一过程涉及游离脂肪酸、磷脂和甘油三酯的提取,并且生产过程能耗低,成为满足日益增长的能源需求的一种理想解决方案.本文综述了微藻脂质提取和酯交换制备生物燃料的相关研究进展.首先,介绍了微藻脂质的提取方法,包括溶剂提取法、索氏提取法、布利格和戴耶法、超临界二氧化碳提取以及离子液体溶剂法等,并分析了各方法的优缺点.随后,重点阐述了酯交换技术在微藻脂质转化中的应用,包括酸碱催化、酶催化以及原位酯交换反应等,并探讨了这些技术的反应机理、催化剂选择、反应器设计以及生物油生产工艺等方面的研究进展.通过综述上述研究进展,为微藻脂质的生产和应用提供了理论指导.研究表明,通过优化催化剂种类、反应条件以及提取方法,可以有效提高微藻脂质的转化效率和生物油品质.同时,本文也指出了当前微藻脂质生产中面临的挑战,如微藻栽培和生长条件优化、高效转化技术的开发等.随着可持续能源日益受到重视,微藻脂质作为一种可再生能源具有巨大的发展潜力.未来研究应进一步关注微藻的规模化栽培、生长条件优化以及高效转化技术的研发,以提高微藻脂质的产量和品质.同时,应进一步推动和实现微藻生物燃料的实际应用,从而为应对气候变化和能源危机提供有效的解决方案.

关键词：微藻脂质提取酯交换催化酶催化原位技术