检索结果-南通市图书馆

Progress in Natural Science:Materials International 2019年第2期29卷 138-144页

作者： amir Zada Nauman ali Fazle Subhan Natasha Anwar Muhammad Ishaq ali Shah Muhammad Ateeq Zahid Hussain Khair Zaman Momin Khan Department of Chemistry Abdul Wali Khan University Key Laboratory of Functional Inorganic Materials Chemistry (Heilongjiang University) Ministry of Education School of Chemistry and Materials Science International Joint Research Center for Catalytic Technology Institute of Chemical Sciences University of Peshawar

The photocatalytic activities of g-C3N4can be significantly improved by increasing life time of the photogenerated charges. Here, in this work we introduced TiO2as proper energy platform to accept the photogenerated electrons from g-C3N4during photocatalysis. The nanophotocatalysts formed from the combination of a suitable amount of TiO2nanoparticles and g-C3N4nanosheets showed 8.75 and 4.22% enhancement in photocatalytic activities for CO2reduction and 2-chlorophenol(2-CP) degradation under visible light illumination as compared to bare g-C3N4. Based on the surface photovoltage spectra, photoluminescence spectra and examination of formed hydroxyl radicals, it was confirmed that these enhanced photoactivities were attributed to the much-improved charge separation via the electron transfer from g-C3N4to TiO2. From trapping experiments,it was found that hydroxyl radicals were the major species involved in the photocatalytic degradation of *** study is helpful to synthesize efficient photocatalysts to cope with energy and environmental issues.

关键词： Nanophotocatalyst Charge separation CO2 reduction Pollutant degradation

Budd-Chiari syndrome secondary to caval recurrence of renal cell carcinoma

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Hepatobiliary & Pancreatic Diseases International 2010年第3期9卷 321-324页

作者： Gabriele Marangoni Adrian O'Sullivan amir ali Walid Faraj Nigel Heaton Institute of Liver Studies King's College London School of Medicine at King's College Hospital

BACKGROUND:Renal cell carcinoma(RCC)involves the inferior vena cava(IVC)in a minority of *** commonly,it presents with Budd-Chiari *** untreated, the condition progresses towards liver failure and ***:We report a case of Budd-Chiari syndrome due to infiltration of the IVC and right atrium by recurrence of RCC 7 years after successful treatment by primary ***:Surgery was performed with a combined abdominal and thoracic approach with cardio-pulmonary by-pass and *** tumor was removed and a cadaveric iliac vein graft used to re-establish venous continuity between the right atrium and hepatic ***:Although it is a complex and high-risk procedure,aggressive surgery performed by an experienced team with liver transplant and cardiothoracic skills may enable resection of apparently advanced caval *** case is discussed in the light of the current literature.

关键词： inferior vena cava renal cell carcinoma recurrence Budd-Chiari syndrome

A comparative study on using meta-heuristic algorithms for road maintenance planning:Insights from field study in a developing country

在线全文

学校读者我要写书评

暂无评论

Journal of Traffic and Transportation Engineering(English Edition) 2017年第5期4卷 477-486页

作者： ali Gerami Matin Reza Vatani Nezafat amir Golroo Department of Civil and Enuironmental Engineering The George Washington UniversityWashington DC 20052USA Transportation Research Institute Old Dominion UniversityNorfolkVA 23529USA Department of Civil and Environmental Engineering Amirkabir University of Technology(Tehran Polytechnic)TehranIran

Optimized road maintenance planning seeks for solutions that can minimize the life-cycle cost of a road network and concurrently maximize pavement condition. Aiming at pro- posing an optimal set of road maintenance solutions, robust meta-heuristic algorithms are used in research. Two main optimization techniques are applied including single-objective and multi-objective optimization. Genetic algorithms （GA）, particle swarm optimization （PSO）, and combination of genetic algorithm and particle swarm optimization （GAPSO） as single-objective techniques are used, while the non-domination sorting genetic algorithm II （NSGAII） and multi-objective particle swarm optimization （MOPSO） which are sufficient for solving computationally complex large-size optimization problems as multi-objective techniques are applied and compared. A real case study from the rural transportation network of Iran is employed to illustrate the sufficiency of the optimum algorithm. The formulation of the optimization model is carried out in such a way that a cost-effective maintenance strategy is reached by preserving the performance level of the road network at a desirable level. So, the objective functions are pavement performance maximization and maintenance cost minimization. It is concluded that multi-objective algorithms including non-domination sorting genetic algorithm II （NSGAII） and multi-objective particle swarm optimization performed better than the single objective algorithms due to the capability to balance between both objectives. And between multi-objective algorithms the NSGAII provides the optimum solution for the road maintenance planning.

关键词： Meta-heuristic algorithms Particle swarm optimization Non-domination sorting geneticalgorithm Ⅱ Multi-objective particle swarmoptimization

A single-step synthesis of nitrogen-doped graphene sheets decorated with cobalt hydroxide nanoflakes for the determination of dopamine

在线全文

学校读者我要写书评

暂无评论

Progress in Natural Science:Materials International 2017年第5期27卷 582-587页

作者： Muhammad Mehmood Shahid Ahmad H.Ismail ali MA.Abdul amir AL-Mokaram R.Vikneswaran Sohail Ahmad amir Hamza Arshid Numan Department of Physics Faculty of ScienceUniversity of Malaya Department of Chemistry College of ScienceMustansiriyah University Department of Chemistry Faculty of ScienceUniversity of Malaya Nanotechnology & Catalysis Research Centre University of Malaya 5. Faculty of ScienceUniversity of Haripur

Nitrogen-doped reduced graphene oxide（NrGO）sheets decorated with Co（OH）;nanoflakes were prepared by a single-step hydrothermal *** morphological and structural characterizations of as synthesized Nr GO@Co（OH）;nanoflakes were performed by field emission scanning electron microscopy（FESEM）,EDX-mapping and X-ray diffraction（XRD）.Nr GO@Co（OH）;nanoflakes modified glassy carbon electrode（GCE）was used for electrochemical sensing of dopamine in neutral *** nanocomposite modified electrode showed enhanced electrochemical sensing ability for the detection of dopamine and the limit of detection（Lo D）was found to be 0.201μM with a sensitivity value of 0.0286±0.002 m A m M;.Interference studies revealed that Nr GO@Co（OH）;─GCE endow excellent selectivity for DA detection even in the presence of higher concentration of common co-existing physiological interfering ***,proposed sensor demonstrated excellent performance in urine samples with promising reproducibility and stability.

关键词： Nitrogen doped graphene Dopamine Electrochemical sensor Amperometric detection

Effect of Absorption of Patch Antenna Signals on Increasing the Head Temperature

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Computer Modeling in Engineering & Sciences 2020年第8期124卷 683-701页

作者： Mohamed Abbas ali Algahtani amir Kessentini Hassen Loukil Muneer Parayangat Thafasal Ijyas Abdul Wase Mohammed Electrical Engineering Department College of EngineeringKing Khalid UniversityAbha61421Saudi Arabia Department of Mechanical Engineering College of EngineeringKing Khalid UniversityAbha61421Saudi Arabia Department of Computers and Communications College of EngineeringDelta University for Science and TechnologyGamasa35712Egypt Laboratory of Electromechanical Systems(LASEM) National Engineering School of SfaxUniversity of SfaxSfax3038Tunisia Electronics and Information Technology Laboratory University of SfaxNational Engineering School of SfaxSfax3038Tunisia Research Center for Advanced Materials Science King Khalid UniversityAbha61413Saudi Arabia Nabeul’s Foundation Institute for Engineering Studies University of CarthageIPEINNabeul8000Tunisia

Every new generation of antennas is characterized by increased accuracy and faster transmission ***,patch antennas have been known to damage human *** type of antenna sends out electromagnetic waves that increase the temperature of the human head and prevent nerve strands from functioning *** paper examines the effect of the communication between the patch antenna and the brain on the head’s temperature by developing a hypothetical multi-input model that achieves more accurate *** inputs are an individual’s blood and tissue,and the emission power of the *** forces depend on the permeability and conductivity characteristics of the metal from which the antenna is *** proposed model is the first one that links the material the antenna is manufactured from and the head’s *** results show that there are only a small number of materials that should be used as antenna *** materials are in the form of thin *** using these thin films at different temperatures,the risk to the head can be *** paper finds that the best results were obtained when the patch antenna was made of one of the following materials operating at a specific temperature:traditional materials at 305°K;casting cast steel at around 295°K;bismuth telluride(Bi2Te3)at 290°K;or barium sodium niobate at 310°K.

关键词： Brain patch antenna head overheating waves behavior materials properties

Development of ^(153)Sm-bleomycin as a possible therapeutic complex

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2010年第3期21卷 165-170页

作者： BAHRAMI-SAMANI ali GHANNADI-MARAGHEH Mohammad JaliLIAN amir Reza YOUSEFNIA Hassan MORADKHANI Sedigheh BOLOURINOVIN Fatemeh Faculty of Nuclear Engineering and Physics Amir Kabir University Radiopharmaceutical Research and Development Laboratories Nuclear Science and Technology Research InstituteTehranIran

Due to interesting therapeutic properties of ^(153)Sm and antineoplastic antibiotic,bleomycin(BLM), ^(153)Sm-bleomycin(^(153)Sm-BLM) was developed as a possible therapeutic compound using ^(153)SmCl_3 and *** ^(153)SmCl_3 was obtained by thermal neutron flux(5×10^(13)n·cm^(-2)·s^(-1))of an enriched ^(152)Sm_2O_3 sample,dissolved in acidic *** optimized conditions(room temperature,45 min,0.1 mg bleomycin for 740-3700 MBq ^(153)SmCl_3) a radiochemical purity over 98%was obtained shown by HPLC(Specific activity = 55 TBq/mM).The ^(153)SmCl_3 and ^(153)Sm-BLM were administered into wild-type rats up to 96 h followed by *** SPECT imaging of labeled compound in wild-type rats was performed and significant image pattern was observed for a radiolabeled bleomycin *** ^(153)Sm-BLM is a potential therapeutic compound and our experiments on this compound have shown satisfactory quality,and stability suitable for future therapeutic studies.

关键词：博莱霉素治疗性高效液相色谱法钐抗肿瘤抗生素放射化学纯度管理局 SPECT

Two Layer Symmetric Cryptography Algorithm for Protecting Data from Attacks

在线全文

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2023年第2期74卷 2625-2640页

作者： Muhammad Nadeem ali Arshad Saman Riaz Syeda Wajiha Zahra Shahab SBand amir Mosavi Department of Computer Science Abasyn UniversityIslamabad44000Pakistan Department of Computer Science National University of TechnologyIslamabad44000Pakistan Future Technology Research Center National Yunlin University of Science and TechnologyDouliuYunlin64002Taiwan Institute of Information Society University of Public ServiceBudapest1083Hungary John Von Neumann Faculty of Informatics Obuda UniversityBudapestHungary Institute of Information Engineering Automation and MathilticsSlovak University of Technology in BratislavaSlovakia

Many organizations have insisted on protecting the cloud server from the outside,although the risks of attacking the cloud server are mostly from the *** are many algorithms designed to protect the cloud server from attacks that have been able to protect the cloud server ***,the attackers have designed even better mechanisms to break these security *** cryptography is the best data protection algorithm that exchanges data between authentic *** this article,one symmetric cryptography algorithm will be designed to secure cloud server data,used to send and receive cloud server data securely.A double encryption algorithm will be implemented to send data in a secure ***,the XOR function will be applied to plain text,and then salt technique will be ***,a reversing mechanism will be implemented on that data to provide more data *** decrypt data,the cipher text will be reversed,salt will be removed,andXORwill be *** the end of the paper,the proposed algorithm will be compared with other algorithms,and it will conclude how much better the existing algorithm is than other algorithms.

关键词： Cryptography symmetric algorithm encryption decryption cipher text cloud security asymmetric algorithm

Prediction of new perforation intervals in a depleted reservoir to achieve the maximum productivity: A case study of PNN logging in a cased-well of an Iranian oil reservoir

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Petroleum 2020年第2期6卷 170-176页

作者： Saeed Zaker Shahab mohamadi nafchi Mahdi Rastegarnia Soheila Bagheri ali Sanati amir Naghibi Islamic Azad University Science and Research BranchTehranIran Islamic Azad University Central BranchTehranIran Head of Petrophysics Section Petro Pardazesh Aria CompanyTehranIran Senior Petrophysicist OTS CompanyTehranIran School of Petrochemical and Petroleum Engineering Hakim Sabzevari UniversitySabzevarIran Senior Petrophysicist Iranian Central Oil Field CompanyTehranIran

Pulsed neutron-neutron(PNN)logging is based on emitting neutrons into the near-wellbore zone and computing the neutron count decay due to scattering and *** main application of this logging tool is to determine the current oil saturation and to detect channeling in perforated and non-perforated intervals behind the *** interpretation of the results obtained from PNN logging enables engineers to predict new perforation intervals in depleted *** study examines the application of PNN logging in a well located in one of Iranian oil *** interpretation procedure is described step by *** principle of the PNN logging and the specifications of the tool are discussed and the applications of PNN logging in evaluation of oil saturation,identification of water flooded zones and prediction of potential perforating zones are *** is also investigated between all layers,good and poor oil zones are characterized based on the calculated oil saturations and new perforation intervals are suggested with the aim to boost oil production from the *** results of this study show that zones 1 to 5 having low oil saturations,are interpreted as depleted oil *** 6 to 8 are interpreted as good oil zones having high potential to produce *** 9 is interpreted as a water zone.

关键词： Pulse neutron-neutron(PNN)logging Sigma value Remaining oil saturation Conventional logging Perforation intervals Depleted reservoir

Comparison of anterior segment parameters of the eye between type 2 diabetic with and without diabetic retinopathy and non-diabetic

在线全文

学校读者我要写书评

暂无评论

International Journal of Ophthalmology(English edition) 2023年第4期16卷 571-578页

作者： Foroozan Narooie-Noori amir Asharlous ali Mirzajani Ebrahim Jafarzadehpur Mehdi Behnia Mehdi Khabazkhoob Rehabilitation Research Center Department of OptometrySchool of Rehabilitation SciencesIran University of Medical SciencesTehran ***Iran Noor Research Center for Ophthalmic Epidemiology Noor Eye HospitalTehran ***Iran Department of Basic Sciences School of Nursing and MidwiferyShahid Beheshti University of Medical SciencesTehran ***Iran

AIM:To compare anterior segment parameters between two groups of type 2 diabetic with and without diabetic retinopathy(DR)and non-diabetic elderly subjects based on hemoglobin A1c(Hb A1c)levels and status of ***:This study was conducted on 997 residents aged 60y or over in Tehran,*** group had Hb A1c level≥6.4%with no other systemic *** non-diabetic participants had normal eye findings and no systemic diseases.K1,K2,mean K,Q-value,anterior,central,posterior,and total corneal densitometric findings,anterior chamber volume(ACV),anterior chamber depth(ACD),corneal volume(CV),and pachymetry were measured by Pentacam ***:A total of 678 non-diabetic(39%male)and 319 diabetic(35%male)subjects with mean age of 66.31±5.23 and 67.22±4.96y were examined,*** statistically significant difference was found in anterior segment parameters between non-diabetic and diabetic groups(all P>0.05).However,middle,posterior,and total corneal densitometric values were statistically different between two groups af ter controlling the ef fects of confounders(P=0.014,0.007,and 0.042,respectively).Corneal densitometric values in all layers,ACD,and ACV were different between diabetic subjects with and without DR(all P<0.05).In the diabetic group,only corneal densitometric values had a negative relationship with fasting blood sugar(P<0.001).ACD and ACV had a negative correlation with Hb A1c levels(all P<0.05,r=-0.129 and-0.146,respectively).However,the relationships were not observed after controlling the confounders(P=0.938,0.466,respectively).CONCLUSION:Considering the higher densitometric values of the cornea and lower ACD and ACV in diabetic subjects with DR,it is suggested that the examiners should perform comprehensive retinal examinations when faced with such conditions.

关键词： anterior segment diabetes hyperglycemia retinopathy cornea

Mental training can improve physical activity behavior in adolescent girls

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Sport and Health Science 2017年第3期6卷 327-332页

作者： Mahboubeh Ghayour Najafabadi amir-Hossein Memari Ramin Kordi Monir Shayestehfar Mohammad-ali Eshghi Department of Physical Education and Sport Sciences University of TehranTehran ***Iran Sports Medicine Research Center Tehran University of Medical SciencesTehran ***Iran Neuroscience Institute Tehran University of Medical SciencesTehran ***Iran

Background:Lately,physical activity(PA) in young girls has been frequently discussed,thus we were interested to examine whether a mental training intervention can increase the level of PA in young ***:A sample of 56 girls aged 15.4 ± 0.3 years(mean ± SD) was assigned to either the intervention or control *** then conducted a6-week mental imagery training program on young female *** was evaluated with objective accelerometer *** self-concept was also assessed in all ***:Young females' PA increased after a course of mental training compared to female participants in control ***,physical self-concept improved related to mental training ***:Exercise imagery may be an effective method of PA increase besides psychological enhancement in young girls.

关键词： Accelerometer Exercise imagery Girls Psychological competence Youth