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| 1 | 中国西南岩溶生态系统特征与石漠化综合治理对策(英文)显示文摘以贵州省为核心的中国西南岩溶区面临双重危机:生态恶劣,石漠化严重;人口贫困,全国1/3强的贫困县分布在该地区。石漠化综合治理需要从岩溶生态系统结构和运行规律出发,重点关注岩溶地下水的开发和可持续利用,水土保持和土壤改良,植被恢复和可适应性的经济植物选择,力求区域生态经济双赢、农民脱贫致富。 | 曹建华 袁道先 童立强 Azim MALLIK 杨慧 黄芬 | 2015 | Journal of Resources and Ecology2015,6,4: | 16 |
| 2 | Vascular calcification:When should we interfere in chronic kidney disease patients and how?显示文摘Chronic kidney disease(CKD) patients are endangered with the highest mortality rate compared to other chronic diseases. Cardiovascular events account for up to 60% of the fatalities. Cardiovascular calcifications affect most of the CKD patients. Most of this calcification is related to disturbed renal phosphate handling. Fibroblast growth factor 23 and klotho deficiency were incriminated in the pathogenesis of vascular calcification through different mechanisms including their effects on endothelium and arterial wall smooth muscle cells. In addition, deficient klotho gene expression, a constant feature of CKD, promotes vascular pathology and shares in progression of the CKD. The role of gut in the etio-pathogenesis of systemic inflammation and vascular calcification is a newly discovered mechanism. This review will cover the medical history, prevalence, pathogenesis, clinical relevance, different tools used to diagnose, the ideal timing to prevent or to withhold the progression of vascular calcification and the different medications and medical procedures that can help to prolong the survival of CKD patients. | Usama Abdel Azim Sharaf El Din Mona Mansour Salem Dina Ossama Abdulazim | 2016 | World Journal of Nephrology2016,5,5: | 10 |
| 3 | Comparative assessment of total polyphenols, antioxidant and antimicrobial activity of different tea varieties of Bangladesh显示文摘Objective: To determine the total polyphenol content, antioxidant activity and antibacterial properties of the extracts of different Bangladeshi tea varieties such as flowery broken orange pekoe, broken orange pekoe, red dust and green tea.Methods: Total phenolic and flavonoid contents were determined by Folin–Ciocalteu and aluminum chloride colorimetric assay, respectively.The antioxidant capacity was determined by ferric ion reducing antioxidant power and phosphomolybdenum method.Antibacterial activity was evaluated by disc diffusion method in agar plate and subsequently, the minimum inhibitory concentration was determined by broth dilution method.Results: Total phenolic and flavonoid contents were significantly higher(P < 0.05) in green tea compared to other three black tea varieties.The green tea also showed a higher free radical scavenging and antioxidant activities than all the other tea varieties tested(P < 0.05).In addition, the extracts of all four tea varieties showed inhibitory activity against several pathogenic bacteria and also the same trend of higher antimicrobial activity of green tea than other tea varieties was observed.Conclusions: Taken together, the results of this study demonstrated that Bangladeshi tea,especially the green tea, may act as a substitute for natural antioxidants and as a promising antibacterial agent for beneficial influence in human health. | Yead Morshed Nibir Ahmed Faisal Sumit Anwarul Azim Akhand Nazmul Ahsan Mohammad Shahnoor Hossain | 2017 | Asian Pacific Journal of Tropical Biomedicine2017,7,4: | 6 |
| 4 | Stop chronic kidney disease progression: Time is approaching显示文摘Progression of chronic kidney disease(CKD) is inevitable. However, the last decade has witnessed tremendous achievements in this field. Today we are optimistic; the dream of withholding this progression is about to be realistic. The recent discoveries in the field of CKD management involved most of the individual diseases leading the patients to end-stage renal disease. Most of these advances involved patients suffering diabetic kidney disease, chronic glomerulonephritis, polycystic kidney disease, renal amyloidosis and chronic tubulointerstitial disease. The chronic systemic inflammatory status and increased oxidative stress were also investigated. This inflammatory status influences the antisenescence Klotho gene expression. The role of Klotho in CKD progression together with its therapeutic value are explored. The role of gut as a major source of inflammation, the pathogenesis of intestinal mucosal barrier damage, the role of intestinal alkaline phosphatase and the dietary and therapeutic implications add a novel therapeutic tool to delay CKD progression. | Usama Abdel Azim Sharaf El Din Mona Mansour Salem Dina Ossama Abdulazim | 2016 | World Journal of Nephrology2016,5,3: | 6 |
| 5 | Topographic species-habitat associations of tree species in a heterogeneous tropical karst seasonal rain forest, China显示文摘Aims Tropical and subtropical karst forests of south China are under increas-ing pressure from over-exploitation causing widespread habitat degra-dation and biodiversity loss.Previous research has demonstrated that topography,as a proxy for resource availability,plays an important role in shaping tree species distributions in tropical forests.However,the association between growth stages and habitats types has not been considered in this analysis.Our aim was to examine the differences among different habitat types to determine whether tree species show similar species-habitat associations at young and mature life stages.Methods We used multivariate regression tree analysis to examined species-habitat associations among eight topographically defined habitats.The results were tested with a torus-translation test and canonical correspondence analysis(CCA)for 74 species in a 15 ha karst tropi-cal seasonal rain forest at the Nonggang National Natural Reserve in south China.We considered two life stages(young and mature)of trees species that showed a positive association with topography.Important Findings We found marked differences in community characteristics and number of associations among the eight habitats.Of the 74 species subjected to torus-translation test,63 had significant positive and 70 had significant negative associations with one or more of the eight habitats.Positive associations were more frequent in higher elevation habitats and negative associations were more frequent in lower eleva-tion habitats.This suggests that edaphic and hydrological variation related to topography play important roles in habitat partitioning in heterogeneous karst forests.For the 63 tree species with significant positive associations to at least one habitat,40 of them had the same positive association at young and mature life stages.The CCA revealed that the six topographic variables considered had consistent relation-ships with species distribution among all individuals and their two life stages.This indicates that most of the karst forest tree species show consistent associations with a single habitat throughout their life.We conclude that niche differentiation plays an important role in main-taining the diversity of this heterogeneous species-rich karst forest. | Yili Guo Bin Wang Azim U.Mallik Fuzhao Huang Wusheng Xiang Tao Ding Shujun Wen Shuhua Lu Dongxing Li Yunlin He Xiankun Li | 2017 | Journal of Plant Ecology2017,10,3: | 6 |
| 6 | 补充锌对小儿志贺氏菌痢患者免疫和炎症反应的影响显示文摘志贺氏菌痢,一种杆菌痢疾,是发展中国家儿童发病和死亡的一个主要原因,尤其是5岁以下儿童。在发展中国家,因频繁感染志贺氏菌而造成儿童的营养不良、生长迟缓,甚至引发危及生命的并发症。严重营养不良儿童患志贺氏菌痢的死亡率极高。 | Rubhana Raqib Swapan Kumar Roy Muhammad Jubayer Rahamn Tasnim Azim Syeda Shegufta Ameer Jobayer Chisti Jan Andersson 刘艳妮 王劲 | 2004 | 营养健康新观察2004,0,3: | 5 |
| 7 | 形状特征和置信传播在去除SIFT特征点错误匹配中的应用显示文摘针对SIFT特征点匹配错误问题,提出一种置信传播与特征点形状特征相结合去除SIFT特征点匹配错误的算法.该算法分为4步:1)根据每个特征点的尺度信息、主方向信息以及匹配邻居特征点信息确定每个特征点邻域窗口的大小和方向,并计算每个特征点在邻域窗口内匹配邻居构成的形状特征;2)连接每个特征点与其最近的3个邻居特征点,构成置信传播网的基本框架;3)利用每对待确定特征点对的特征描述符之间的距离与其形状特征之间的距离生成置信传播网的证据函数,利用每对待确定特征点对与其邻居之间的空间关系生成置信传播网的相容函数;4)迭代计算每个特征点的置信度以及传递给邻居的消息,直至整个网络收敛,并通过最后得到的置信度确定初始匹配特征点对是否为误配.利用真实拍摄的图像和牛津几何视觉组数据库中的图像进行仿真实验,并与RANSAC算法、GTM算法以及BP_SIFT算法进行了比较,仿真结果表明,在召回率、准确率、丢失率和效率上,文中算法总体上优于上述3种算法. | 翟凤文 党建武 王阳萍 罗维薇 Muhammad Azim Asim | 2016 | 计算机辅助设计与图形学学报2016,28,3: | 5 |
| 8 | Unexpected complication of arteriovenous fistula of the left common carotid to internal jugular vein following central venous catheterization显示文摘Incidence of inadvertent arterial puncture secondary to central venous catheter insertion is not common with an arterial puncture rate of<1%.This is due to the advancements and wide availability of ultrasound to guide its insertion.Formation of arteriovenous fistula after arterial puncture is an unexpected complication.Till date,only five cases(including this case)of acquired arteriovenous fistula formation has been described due to inadvertent common carotid puncture.The present case is a 26-year-old man sustained traumatic brain injuries,chest injuries and multiple bony fractures.During resuscitative phase,attempts at left central venous catheter via left internal jugular vein under ultrasound guidance resulted in inadvertent puncture into the left common carotid artery.Surgical neck exploration revealed that the catheter had punctured through the left internal jugular vein into the common carotid artery with formation of arteriovenous fistula.The catheter was removed successfully and common carotid artery was repaired.Postoperatively,the patient recovered and clinic visits revealed no neurological deficits.From our literature review,the safest method for removal is via endovascular and open surgical removal.The pull/push technique(direct removal with compression)is not recommended due to the high risk for stroke,bleeding and hematoma formation. | Tan Chor Lip Henry Tan Jih Huei Mohamad Yuzaidi Lenny Suryani Safri K.Krishna Imran Alwi Rizal Md Idris Mohamad Azim Hanafiah Harunarashid | 2020 | Chinese Journal of Traumatology2020,23,1: | 5 |
| 9 | Transjugular intrahepatic porto 全身的分流在老: 为门高血压的复杂并发症的减轻显示文摘 AIM:To present a dedicated series of transjugular intrahepatic porto-systemic shunts(TIPS) in the elderly since data is sparse on this population group.METHODS:A retrospective review was performed of patients at least 65 years of age who underwent TIPS at our institutions between 1997 and 2010.Twentyfive patients were referred for TIPS.We deemed that 2 patients were not considered appropriate candidates due to their markedly advanced liver disease.Of the 23 patients suitable for TIPS,the indications for TIPS placement was portal hypertension complicated by refractory ascites alone(n = 9),hepatic hydrothorax alone(n = 2),refractory ascites and hydrothorax(n = 1),gastrointestinal bleeding alone(n = 8),gastrointestinal bleeding and ascites(n = 3).RESULTS:Of these 23 attempted TIPS procedure patients,21 patients had technically successful TIPS procedures.A total of 29 out of 32 TIPS procedures including revisions were successful in 21 patients with a mean age of 72.1 years(range 65-82 years).Three of the procedures were unsuccessful attempts at TIPS and 8 procedures were successful revisions of our existing TIPS.Sixteen of 21 patients who underwent successful TIPS(excluding 5 patients lost to follow-up) were followed for a mean of 14.7 mo.Ascites and/or hydrothorax was controlled following technically successful procedures in 12 of 13 patients.Bleeding was controlled following technically successful procedures in 10 out of 11 patients.CONCLUSION:We have demonstrated that TIPS is an effective procedure to control refractory complications of portal hypertension in elderly patients. | Mubin I Syed Hetal Karsan Hector Ferral Azim Shaikh Uzma Waheed Talal Akhter Alan Gabbard Kamal Morar Robert Tyrrell | 2012 | World Journal of Hepatology2012,4,2: | 4 |
| 10 | 感染人类的禽流感病毒A(H5N1)研究进展显示文摘 | Abdel-Nasser Abdel-Ghafar Tawee Chotpitayasunondh Zhancheng Gao Frederick G. Hayden Nguyen Duc Hien Menno D. de Jong Azim Naghdaliyev J.S. Malik Peiris Nahoko Shindo Santoso Soeroso Timothy M. Uyeki 钟晓琴(译) 王关嵩(校) | 2009 | 中华肺部疾病杂志(电子版)2009,2,1: | 4 |
| 11 | Oxidative coupling of methane over (Na_2WO_4+Mn or Ce)/SiO_2 catalysts:In situ measurement of electrical conductivity显示文摘The effects of manganese oxide or ceria promoters on the performance of Na2WO4/SiO2 catalysts for oxidative coupling of methane (OCM) are reported. The OCM reaction was performed in a continuous-flow microreactor at 800 ℃, atmospheric pressure and under GHSV = 13200 ml gC-1at h-1. Catalysts were characterized by in situ conductivity measurement, FT-IR spectroscopy, XRD, SEM and temperature programmed reduction analysis. Manganese oxide promoted Na2WO4/SiO2 is considered as one of the active and selective catalysts for OCM reaction. Ceria with high oxygen storage capacity is selected as a proper oxygen activator, providing a higher concentration of the oxy-anion species which is suitable for OCM reaction and compared with manganese oxide. Electrical conductivity of the catalysts was measured in OCM reaction under oxidizing atmosphere, i.e. in the absence of methane. It was found that the trimetallic catalysts, i.e. the catalysts having sodium, tungsten and Mn or Ce species, exhibited similar crystalline structures and morphologies, which lead to suitable bulk properties for the formation of an active and selective catalyst. However, tungsten had significant effect on the texture and redox properties of the catalysts. It was also shown that the crystalline structure of the bimetallic (Na+Mn or Ce)/SiO2 samples was quite different. This reveals that the metal oxides have significant effect on the extent of crystallization, taking place in the course of interaction of sodium with silica support. Similar conductivities and catalytic performances of (Na2WO4+Mn or Ce)/SiO2 catalysts propose that the ability of Na2WO4/SiO2 for utilizing oxy-anions formed in presence of different metal oxides is limited. | Zeinab Gholipour Azim Malekzadeh Reza Hatami Yadollah Mortazavi Abasali Khodadadi | 2010 | Journal of Natural Gas Chemistry2010,19,1: | 3 |
| 12 | Improvement in IBC-silicon solar cell performance by insertion of highly doped crystalline layer at heterojunction interfaces显示文摘By inserting a thin highly doped crystalline silicon layer between the base region and amorphous silicon layer in an interdigitated back-contact(IBC) silicon solar cell, a new passivation layer is investigated. The passivation layer performance is characterized by numerical simulations. Moreover, the dependence of the output parameters of the solar cell on the additional layer parameters(doping concentration and thickness) is studied. By optimizing the additional passivation layer in terms of doping concentration and thickness, the power conversion efficiency could be improved by a factor of2.5%, open circuit voltage is increased by 30 mV and the fill factor of the solar cell by 7.4%. The performance enhancement is achieved due to the decrease of recombination rate, a decrease in solar cell resistivity and improvement of field effect passivation at heterojunction interface. The above-mentioned results are compared with reported results of the same conventional interdigitated back-contact silicon solar cell structure. Furthermore, the effect of a-Si:H/c-Si interface defect density on IBC silicon solar cell parameters with a new passivation layer is studied. The additional passivation layer also reduces the sensitivity of output parameter of solar cell to interface defect density. | Hadi Bashiri Mohammad Azim Karami Shahramm Mohammadnejad | 2017 | Chinese Physics B2017,26,10: | 3 |
| 13 | Synergists action of piperonyl butoxide and S,S,S-tributyl phosphorotrithioate on toxicity of carbamate insecticides against Blattella germanica显示文摘Objective: To determine the synergists action of piperonyl butoxide(PBO) and S,S,Stributyl phosphorotrithioate(DEF) on toxicity of carbamate insecticides against Blattella germanica in Tehran city.Methods: In the current study, German cockroach strains were collected from several hospitals and dormitories in Tehran.At the beginning, different concentrations of bendiocarb and carbaryl(insecticides belong to carbamate group) were determined by surface contact on a susceptible strain.Then, the level of susceptibility and type of resistance mechanisms in the collected strains from contaminated sites to the aforementioned insecticides were studied by using PBO and DEF synergists with different insecticide ratios to synergist(1:0, 1:1, 1:2, 1:3).Results: The DEF synergist along with bendiocarb and carbaryl completely eliminated the resistance in all strains but PBO did not completely eliminate the resistance in the strains of Mofid, Alvand, Valiasr hospitals and Shariati dormitory.Generally, the impact of DEF was observed in the removing resistance more than PBO.Conclusions: In most of these strains, resistance to bendiocarb and carbaryl is completely eliminated by DEF, showing a very high role of estraze enzymes in resistance to bendiocarb and carbaryl.But in most strains PBO does not remove the resistance because other mechanisms, such as reduced cuticle penetration and insensitivity to the acetylcholine esterase enzyme, may be involved. | Alireza Sanei Dehkordi Yaser Salim Abadi Hasan Nasirian Teymour Hazratian Mohammad Amin Gorouhi Saideh Yousefi Azim Paksa | 2017 | Asian Pacific Journal of Tropical Medicine2017,10,10: | 3 |
| 14 | Zernike矩快速算法的修正显示文摘首先对Mukundan和Ramakrishnan提出的Zernike矩快速算法进行了修正,给出了更为完整、准确的坐标变换公式。然后给出了由伪极坐标系向笛卡尔坐标系转换的方法。最后,将每一幅图像在相同阶数和重复度下的4个方向Zernike矩模值的均方差与均值的比作为评价指标,对修正前和修正后的算法以及图像预处理对Zernike矩快速算法的影响进行了综合验证。针对5幅图片,两种算法分别有5×11个评价值,实验结果表明:改进后的算法有44个评价值好于原始算法,同时也通过实验验证了多种预处理对Zernike矩的影响。 | 翟凤文 Muhammad Asim Azim 王阳萍 党建武 | 2014 | 吉林大学学报(工学版)2014,44,6: | 3 |
| 15 | The biofloc technology (BFT) in indoor tanks: Water quality, biofloc composition, and growth and welfare of Nile tilapia ( Oreochromis niloticus )显示文摘 | M.E. Azim D.C. Little | 2008 | Aquaculture2008,,1: | 2 |
| 16 | Design and Optimization of Interior Permanent Magnet(IPM)Motor for Electric Vehicle Applications显示文摘This paper explores some design parameters of an interior permanent magnet synchronous motor that contribute to enhancing motor performance.Various geometry parameters such as magnet dimension,machine diameter,stator teeth height,and number of poles are analyzed to compare overall torque,power,and torque ripples in order to select the best design parameters and their ranges.Pyleecan,an open-source software,is used to design and optimize the motor for electric vehicle applications.Following optimization with Non-dominated Sorting Genetic Algorithm(NSGA-Ⅱ),two designs A and B were obtained for two objective functions and the corresponding torque ripples values of the design A and B were later reduced by 32%and 77%.Additionally,the impact of different magnet grades on the output performances is analyzed. | Lavanya Balasubramanian Nurul Azim Bhuiyan Asad Javied Ashraf A.Fahmy Fawzi Belblidia Johann Sienz | 2023 | CES Transactions on Electrical Machines and Systems2023,7,2: | 2 |
| 17 | Anatomical studies on water hyacinth (Eichhornia crassipes (Mart.) Solms) under the influence of textile wastewater显示文摘Water hyacinth (Eichhornia crassipes (Mart.) Solms) is a prolific free floating aquatic macrohpyte found in tropical and subtropical parts of the earth. The effects of pollutants from textile wastewater on the anatomy of the plant were studied. Water hyacinth exhibits hydrophytic adaptations which include reduced epidermis cells lacking cuticle in most cases, presence of large air spaces (7~50 μm), reduced vascular tissue and absorbing structures. Textile waste significantly affected the size of root cells.The presence of raphide crystals was noted in parenchyma cells of various organs in treated plants. | MAHMOOD Qaisar 郑平 SIDDIQI M. Rehan ISLAM Ejaz ul AZIM M. Rashid HAYAT Yousaf | 2005 | Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2005,6,10: | 2 |
| 18 | Dark count rate and band to band tunneling optimization for single photon avalanche diode topologies显示文摘This paper proposes two optimal designs of single photon avalanche diodes(SPADs) minimizing dark count rate(DCR). The first structure is introduced as p^+/pwell/nwell, in which a specific shallow pwell layer is added between p^+and nwell layers to decrease the electric field below a certain threshold. The simulation results show on average 19.7%and 8.5% reduction of p^+/nwell structure’s DCR comparing with similar previous structures in different operational excess bias and temperatures respectively. Moreover, a new structure is introduced as n+/nwell/pwell, in which a specific shallow nwell layer is added between n+and pwell layers to lower the electric field below a certain threshold. The simulation results show on average 29.2% and 5.5% decrement of p^+/nwell structure’s DCR comparing with similar previous structures in different operational excess bias and temperatures respectively. It is shown that in higher excess biases(about 6 volts), the n+/nwell/pwell structure is proper to be integrated as digital silicon photomultiplier(dSiPM) due to low DCR. On the other hand, the p^+/pwell/nwell structure is appropriate to be utilized in dSiPM in high temperatures(above 50?C) due to lower DCR value. | Taha Haddadifam Mohammad Azim Karami | 2019 | Chinese Physics B2019,28,6: | 2 |
| 19 | Studies on graphite based conductive paint coatings显示文摘 | S. Syed Azim A. Satheesh K.K. Ramu S. Ramu G. Venkatachari | 2005 | Progress in Organic Coatings2005,,1: | 2 |
| 20 | Tunneling in submicron CMOS single-photon avalanche diodes显示文摘Tunneling is studied in two main single-photon avalanche diode(SPAD) topologies,which are n-tub guard ring(NTGR) and p-tub guard ring(PTGR).Device simulation,I-V measurements,and dark count calculations and measurements demonstrate that tunneling is the main source of noise in NTGR,but it is less dominant in PTGR SPADs.All structures are characterized with respect to dark noise,photon detection probability,timing jitter,afterpulsing probability,and breakdown voltage.Noise performance is disturbed because of tunneling,whereas jitter performance is disturbed because of the short diffusion time of photo-generated minority carriers in NTGR SPADs.The maximum photon detection probability is enhanced because of an improvement in absorption thickness. | Mohammad Azim Karami Armin Amiri-Sani Mohammad Hamzeh Ghormishi | 2014 | Chinese Optics Letters2014,12,1: | 2 |