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Cardiac Calcification
Morteza Joorabian
Iranian Journal of Radiology , 2011,
Abstract: There is a spectrum of different types of cardiac"ncalcifications with the importance and significance"nof each type of cardiac calcification, especially"ncoronary artery calcification. Radiologic detection of"ncalcifications within the heart is quite common. The"namount of coronary artery calcification correlates"nwith the severity of coronary artery disease (CAD)."nCalcification of the aortic or mitral valve may indicate"nhemodynamically significant valvular stenosis."nMyocardial calcification is a sign of prior infarction,"nwhile pericardial calcification is strongly associated"nwith constrictive pericarditis. A spectrum of different"ntypes of cardiac calcifications (linear, annular,"ncurvilinear,...) could be seen in chest radiography and"nother imaging modalities. So a carful inspection for"ndetection and reorganization of these calcifications"nshould be necessary. Numerous modalities exist for"nidentifying coronary calcification, including plain"nradiography, fluoroscopy, intravascular ultrasound,"nMRI, echocardiography, and conventional, helical and"nelectron-beam CT (EBCT). Coronary calcifications"ndetected on EBCT or helical CT can be quantifie,"nand a total calcification score (Cardiac Calcification"nScoring) may be calculated. In an asymptomatic"npopulation and/or patients with concomitant risk"nfactors like diabetes mellitus, determination of the"npresence of coronary calcifications identifies the"npatients at risk for future myocardial infarction and"ncoronary artery disease. In patients without coronary"ncalcifications, future cardiovascular events could"nbe excluded. Therefore, detecting and recognizing"ncalcification related to the heart on chest radiography"nand other imaging modalities such as fluoroscopy, CT"nand echocardiography may have important clinical"nimplications.
桃园中食心虫单一性诱芯及其复合配置的诱蛾效率比较  [PDF]
刘玉峰,杨小凡,王冲,崔彦,刘小侠,马春森,魏国树
应用昆虫学报 , 2014,
Abstract: 【目的】明确两种食心虫性诱芯复合配置的诱蛾效果,提高其监测或防治效率及其绿色环保化水平,为果树生产中食心虫的高效监测和绿色防控提供科学依据。【方法】田间系统调查研究了梨小食心虫(以下简称“梨小”)、桃小食心虫(以下简称“桃小”)单一性诱芯及其复合配置3种处理的诱蛾效率,并利用“y”型嗅觉仪比较研究了其间梨小雄蛾趋向性的差异。【结果】(1)梨小和桃小性单一诱芯及其复合配置对梨小均具有引诱作用,其诱蛾总量依次为8238.33、1451.67、8321.67头/诱捕器,其中第1、2、3代时复合配置诱蛾量最大,越冬代和第4代时梨小单一性诱芯诱蛾量最大,而各世代桃小单一性诱芯诱蛾量均最低。梨小单一性诱芯及其复合配置均监测到5个梨小发生高峰,且峰期基本一致,但复合配置的峰日诱蛾量均较高;桃小单一性诱芯仅监测到3个梨小发生高峰,且峰日诱蛾量亦较低。(2)桃小单一性诱芯及其复合配置对桃小均具有引诱作用,其诱蛾总量依次为4.00、2.33头/诱捕器,而梨小单一性诱芯对桃小无引诱作用。(3)“y”型嗅觉仪研究发现,梨小食心虫对梨小和桃小各单一性诱芯及其复合配置均具有趋向作用,其趋向率依次为50.67%、8.67%、53.33%。【结论】梨小和桃小单一性诱芯复合配置对梨小诱捕量有微增效作用,而对桃小诱捕量有一定干扰作用,但影响均不显著。据此,该复合配置可用于桃园中梨小和桃小的监测与防控。
微阵列芯片分析成牙骨质细胞矿化过程中microRNA表达谱的差异
Differentially Expressed MicroRNA during Cementoblasts Mineralization Based Microarray.
 [PDF]

王川, 廖海清, 曹正国
WANG Chuan
, LIAO Hai-qing, CAO Zheng-guo.

- , 2017, DOI: 10.13701/j.cnki.kqyxyj.2017.02.005
Abstract: 摘要 目的:诱导小鼠成牙骨质细胞矿化,研究在成牙骨质细胞矿化过程中microRNA表达谱的变化。方法:体外培养小鼠成牙骨质细胞系OCCM30,使用抗坏血酸、β-甘油磷酸钠和地塞米松诱导成牙骨质细胞矿化。实时荧光定量PCR(qPCR)检测碱性磷酸酶和骨钙蛋白表达量变化来验证矿化情况。应用miRNA microarray 芯片技术,分析成牙骨质细胞矿化过程中miRNA表达谱的变化。QPCR对芯片结果进行验证。结果:成功诱导了成牙骨质细胞的矿化。MiRNA microarray 芯片检测发现成牙骨质细胞矿化过程中miRNA表达谱出现明显改变,其中上调的有4个,下调的有39个。QPCR证明芯片结果准确可靠。结论:建立了小鼠成牙骨质细胞矿化的细胞模型,应用miRNA芯片发现小鼠成牙骨质细胞矿化过程中差异表达的miRNA,提示这些miRNA可能参与成牙骨质细胞矿化过程的调控
诱集物对金龟子诱集作用  [PDF]
李仲秀,刘春芹,王庆雷,崔景岳
华北农学报 , 1995, DOI: 10.3321/j.issn:1000-7091.1995.z1.033
Abstract: 研究表明,从日本金龟子中提取性诱集物对我国北方丽金龟中Popillia属有很强诱集力,其中对四纹丽金龟、琉璃丽金龟诱集量最大;从玫瑰花中提取诱集物对我国北方花金龟中白星花金龟和小青花金龟等诱集力最强,尤以后者为甚。这两种诱集物可作为上述金龟子预测预报和防治手段。
人骨形成蛋白-2c端102肽的诱骨活性  [PDF]
张斌, 蒲勤, 朱帮福, 陈南春, 陈苏民*
生物工程学报 , 2001,
Abstract: 为分析更短的hbmp-2c端肽是否具有诱骨活性,寻求新型的有诱骨活性的基因工程hbmp-2产品。利用温度诱导的大肠杆菌表达系统表达肽段长度为102个氨基酸的hbmp-2c端肽及其cys的突变体。表达产物经纯化复性后,植入小鼠肌袋模型中测试其诱骨活性。获得了能稳定表达hbmp2c端肽的工程菌,测序结果与预期的序列完全一致。表达产物以包涵体形式存在,表达量占细胞总蛋白的30%。产物经纯化复性后,小鼠肌袋模型测试结果表明:hbmp2102肽仍具有诱骨活性,而将c端第一位cys突变的102肽诱骨活性丧失。实验表明:比hbmp2成熟肽(114个氨基酸)更短的c端102肽仍具有良好诱骨活性,这102肽n端第一个cys对其诱骨活性可能是必需的。
Interpretation of Calcification in Mammograms
H. Zekavat
Iranian Journal of Radiology , 2005,
Abstract: Introduction & Background:There are two basic steps in the interpretation of mammograms: perception and analysis. In the absence of tumor shadow, the most important factors for analyzing calcification are, form, size, and density of each particle. The number and distribution of calcifications should also be taken into consideration. The analysis starts with an at-tempt to discover the pathological process that has produced the calcification; therefor, careful analysis of the form and size of each calcification can lead us to their pathoanatomichal location and can indirectly tell us the process that has produced them. Intra- and inter-particle density analysis brings us even more exact understanding of the underlying process. Most calcifications in breast are of the benign type. More than 80% of biopsies of calcification clusters repre-sent benign processes. Detailed analysis of the form, size, and density as well as the number and distribu-tion of calcifications can lead to high level of diagnos-tic accuracy. Microfocus magnification mammogra-phy is extremely helpful in many cases since it pro-vides a more detailed image.
桃小食心虫与金纹细蛾不同性诱芯的诱蛾效果  [PDF]
于海利?,张林林?,张国辉?
西北农林科技大学学报(自然科学版) , 2010,
Abstract: 【目的】筛选高效诱芯,研究其科学使用技术,为提高性诱剂诱捕目标害虫效果提供技术支撑。【方法】于200907-09,选用桃小食心虫2种诱芯及桃小食心虫与金纹细蛾的单一诱芯和复合诱芯,在陕西省白水县选择桃小食心虫和金纹细蛾混合发生的苹果园进行田间诱捕试验。【结果】桃小食心虫2种不同诱芯的平均日诱蛾量和不同时段诱蛾量均无显著差异,而诱蛾量的动态趋势有一定差异。桃小食心虫和金纹细蛾单一诱芯的诱蛾效果均极显著高于复合诱芯;不同时段诱蛾效果表现为,试验初期桃小食心虫单一诱芯的诱蛾量极显著高于复合诱芯,而金纹细蛾单一诱芯在整个试验期间诱蛾量均极显著或显著高于复合诱芯;单一诱芯和复合诱芯诱蛾量动态比较一致,单一诱芯的诱蛾高峰均高于复合诱芯。【结论】桃小食心虫2种诱芯都能起到诱集成虫的作用,但a诱芯能更好地监测成虫的发生动态。在桃小食心虫和金纹细蛾混合发生的果园,将2种诱芯分开使用效果较好。
Infantile epididymitis with calcification
Muramori Katsumi,Nagata Koji,Handa Noritoshi
Journal of Indian Association of Pediatric Surgeons , 2008,
Abstract: A 1-month-old infant presented with a case of calcifying chronic epididymitis. Differential diagnosis was made from a testicular torsion and neoplasm. Serial ultrasound examination revealed a calcified lesion adjacent to the normal testis, thereby avoiding an unnecessary orchiectomy. Infantile epididymitis has been thought to be rare; however, it is occasionally encountered in the literature and calcification with chronic epididymitis in an infant has not been previously reported. On the other hand, an infant with scrotal calcification should be suspected of neoplasm. However, the tumor markers a-fetoprotein (AFP) and Human Chorionic Gonadotropin β (HCG β ) were within the physiological range. Therefore, a diagnosis must be carefully made to avoid an unnecessary orchiectomy.
Bone metabolism and vascular calcification
Danilevicius, C.F.;Lopes, J.B.;Pereira, R.M.R.;
Brazilian Journal of Medical and Biological Research , 2007, DOI: 10.1590/S0100-879X2007000400001
Abstract: osteoporosis and atherosclerosis are chronic degenerative diseases which have been considered to be independent and whose common characteristic is increasing incidence with age. at present, growing evidence indicates the existence of a correlation between cardiovascular disease and osteoporosis, irrespective of age. the morbidity and mortality of osteoporosis is mainly related to the occurrence of fractures. atherosclerosis shows a high rate of morbidity and especially mortality because of its clinical repercussions such as angina pectoris, acute myocardial infarction, stroke, and peripheral vascular insufficiency. atherosclerotic disease is characterized by the accumulation of lipid material in the arterial wall resulting from autoimmune and inflammatory mechanisms. more than 90% of these fatty plaques undergo calcification. the correlation between osteoporosis and atherosclerosis is being established by studies of the underlying physiopathological mechanisms, which seem to coincide in many biochemical pathways, and of the risk factors for vascular disease, which have also been associated with a higher incidence of low-bone mineral density. in addition, there is evidence indicating an action of antiresorptive drugs on the reduction of cardiovascular risks and the effect of statins, antihypertensives and insulin on bone mass increase. the mechanism of arterial calcification resembles the process of osteogenesis, involving various cells, proteins and cytokines that lead to tissue mineralization. the authors review the factors responsible for atherosclerotic disease that correlate with low-bone mineral density.
Atypical Steatocystoma Multiplex with Calcification  [PDF]
Muhammad Hasibur Rahman,Muhammad Saiful Islam,Nazma Parvin Ansari
ISRN Dermatology , 2011, DOI: 10.5402/2011/381901
Abstract: A 60-year-old male reported to us with an atypical case of giant steatocystoma multiplex in the scrotum with calcification. There was no family history of similar lesions. Yellowish, creamy material was expressed from a nodule during punch biopsy. The diagnosis was based on clinical as well as histological findings. Successful surgical excision was done to cure the case without any complications. 1. Introduction Steatocystoma multiplex occurs as numerous, epithelial-lined, sebum-filled dermal cysts with characteristic sebaceous glands in the cyst walls [1]. Usually it begins in adolescence or early adult life. It may be inherited as an autosomal dominant trait, but most cases have no family history [2]. Both sexes are affected equally. Clinically, it is characterized by multiple small soft, movable, yellowish to skin-colored dermal cystic papules and nodules, varying from a few to 20?mm or more in size [3]. Overlying epidermis, it usually remains normal with no central punctum [4]. The trunk (with the presternal region as the site of election) and proximal extremities are involved, but lesions may appear anywhere, including the scrotum. Usually, the lesions are asymptomatic, but some lesions may become inflamed, suppurate and heal with scarring [3]. When inflammation of the ruptured cysts takes place and is extensive, it can produce the so-called steatocystoma multiplex suppurate, which mimics acne conglobata [2]. Occurrence of a solitary lesion is called steatocystoma simplex, which has no hereditary tendency [3]. The condition has been given, variety of names including steatocystomatosis, sebocystomatosis and epidermal polycystic disease [5]. Instances of lesions of large size grouped in large quantities in one region of the body are rare. Similar lesions with extensive calcification seem to be extremely rare. We are presenting here a case report of steatocystoma multiplex with extensive calcification and firm adhesion to the scrotum. 2. Case Report A 60-year-old male presented to us with asymptomatic multiple cystic papule and nodules of various size and shape in group with firm adhesion on the scrotum for a period of 15 years. To start with the investigation we noticed a small, firm, elevated lesion on the scrotum which remained stationary for 10 years. With the passage of time, and since the past year, the lesion increased in size and number. Large-sized nodules grouped in large quantities in scrotum are rarely found. Similar lesions with extensive calcification with firm adhesion seem to be extremely rare. Figure 1 shows atypical steatocystoma
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