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An Investigation of Freezing of Supercooled Water on Anti-Freeze Protein Modified Surfaces

Journal of Bionic Engineering 2013年第2期10卷 139-147页

作者： Thibaut V J Charpentier Anne Neville Paul Millner Rob Hewson ardian morina Institute of Engineering Thermofluids Surfaces and Interfaces (iETSI) Mechanical Engineering University of Leeds LS2 9JT Leeds UK

This work investigates how functionalization of aluminium surfaces with natural type III Anti-Freeze Protein （AFP） affects the mechanism of heterogeneous ice nucleation. First the bulk ice nucleation properties of distilled water and aqueous solution of AFP were evaluated by differential scanning calorimetry. Then the modified surface was characterized by Secondary Ions Mass Spectroscopy （SIMS）, Fourier Transform InfraRed （FTIR） spectroscopy and contact angle measurement. Freezing experiments were then conducted in which water droplets underwent a slow controlled cooling. This study shows that compared to uncoated aluminium, the anti-freeze proteins functionalized surfaces exhibit a higher and narrower range of freezing temperature. It was found that these proteins that keep living organisms from freezing in cold environment act in the opposite way once immobilized on surfaces by promoting ice nucleation. Some suggestions regarding the mechanism of action of the observed phenomena were proposed based on the Classical Nucleation Theory （CNT）.

关键词： anti-freeze protein surface functionalization ice nucleation temperature ice-like monolayer

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Nano-scale coating wear measurement by introducing Raman-sensing underlayer

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Journal of Materials Science & Technology 2022年第1期96卷 285-294页

作者： Nan Xu Chun Wang Liuquan Yang Eric Kumi Barimah Gin Jose Anne Neville ardian morina Institute of Functional Surfaces School of Mechanical EngineeringUniversity of LeedsLeedsLS29JTUnited Kingdom School of Chemical and Process Engineering University of LeedsLeedsLS29JTUnited Kingdom

For gaining fundamental insight into coating wear mechanisms and increasing operational efficiency and automation degree of equipment in important application fields of coating techniques,it is of great importance to developing novel wear measurement techniques enabling nanoscale studies of coating wear in the running process,but this remains a significant ***,a facile strategy is reported to achieve accurate coating thickness quantification at nanoscale level,which is based on a bilayer structure:a top target layer of a-C:H(hydrogenated amorphous carbon)film is considered as a light attenuating and anti-wear layer while underlayer of silicon serves as Raman-sensing *** constructing the relationship between the thickness of a-C:H and Raman intensity of attenuated silicon signal,the coating thickness quantification method is established and successfully applied to quantify coating wear in the friction *** approach can effectively avoid remarkable errors caused by tribo-induced effects in the interface regions,demonstrating its advantage in error *** about these tribo-induced effects are also elucidated by a combination of Raman spectroscopy,optical profilometer,EELS,and *** particular,the proposed approach enables the possibility of measuring coating wear with oil film on top,which breaks an important limitation of existed wear measurement methods,i.e.,incapable of applying in oil-lubricated *** approach can be used to quantify the wear condition of diverse target coatings and has the potential of online wear monitoring when combining a compact laser excitation and detection system.

关键词： Coating Wear measurement Raman Layered structure Nanoscale

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船用柴油机供油机构滚轮衬套混合热弹流润滑特性研究

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内燃机工程 2023年第3期44卷 1-9页

作者：郭怀谦赵滨陈思睿周家勇卢熙群 ardian morina 哈尔滨工程大学动力与能源工程学院哈尔滨150001 重庆红江机械有限责任公司重庆402160 英国利兹大学机械工程学院英国利兹LS29JT

以船用柴油机供油机构中滚轮-浮动衬套-滚轮销为研究对象,考虑其低速重载运行工况下衬套弹性变形,计入表面粗糙特征,构建了浮动衬套内外双层油膜混合热弹性流体动压润滑分析模型,并据此探究了内外层油膜间隙比、衬套宽径比、衬套厚度及... 详细信息

以船用柴油机供油机构中滚轮-浮动衬套-滚轮销为研究对象,考虑其低速重载运行工况下衬套弹性变形,计入表面粗糙特征,构建了浮动衬套内外双层油膜混合热弹性流体动压润滑分析模型,并据此探究了内外层油膜间隙比、衬套宽径比、衬套厚度及其表面粗糙度对环速比、内外层最大油膜压力及承载能力等润滑特性的影响规律。结果表明:滚轮-浮动衬套-滚轮销结构运行过程中内层油膜厚度较小,润滑状态较为恶劣;低速重载工况下,衬套弹性变形与混合润滑效应不可忽略;宽径比越大、内外层间隙比越小,最大油膜压力越小,结构承载能力越强,但温升越高;混合润滑状态仅出现于衬套内层润滑油膜,且衬套表面粗糙度越大,润滑效果越差。

关键词：船用柴油机供油机构浮动衬套混合热弹流润滑

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Carpal tunnel syndrome: Diagnosis and surgical treatment

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Health 2012年第4期4卷 225-227页

作者： Faton morina Cen Bytyqi Aziz Mustafa Gentian morina Clinic of Orthopedics University Clinical Center of Kosova Prishtina Kosova ENT Clinic University Clinical Center of Kosova Prishtina Kosova

Carpal tunnel syndrome (CTS) is a compressive idiopathic neuropathy, most commonly affecting the median nerve in the upper extremity. CTS have high prevalence, with up to 70% of cases in women aged between 45 and 60 years. Typical manifestations of CTS are numbness of the index and middle fingers, which also become painful and cause the patient to awaken from sleep. In the period from January 2008 to October 2011 at the Orthopedics Clinic of the University of Kosovo, surgery for decompression of the median nerve was performed for 32 patients with CTS. The patients had an average age of 49.1 years. After surgery, 81.25% of the patients experienced complete improvement, whereas partial improvements were noted in 18.75% of the patients. This treatment is easy and feasible, has high efficiency, can be performed under local anaesthesia, and confers improvements in terms of return to daily activities, with low risk of complications or relapse.

关键词： Carpal Tunnel Syndrome Hand Surgery Local Anesthesia

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