bluuebunny/crossref_metadata_2025 huggingface dataset:
Study on Shrinkage of Cured Volume for UV-Curing Coatings
Authors: Wang Qing Kai , Huang Bei Qing , Wei Xian Fu , Shen Hao Chen
Published: January 2015

UV-Curable Coatings, Have been Widely Used in Machinery, Chemical Engineering, Biology, Medicine, Electronics and so on, due to their Fast Curing, Low Curing Temperature, Low VOC Emissions and Low Energy Cost. however, the Volume Shrinkage during the Curing Process Have a Great Influence on the Performance of the Coating, which Ofen Lowering Coating Adhesive Strength and Accelerating the Aging Process of Coatings Film.The Paper Select Different Kinds of Monomers (EOEOEA, HDDA, TPGDA, NPGDA, TMPTA and EO3- TMPTA) and Light Cured Resin (free Radical Type: Polyester Acrylate Resin 5600, Polyurethane Acrylate UA VP 2396, the Pure Acrylic 6536-1,cationic Resin: Epoxy Cationic Resin Omnilance OC3005) to Prepare the UV Curing Coatings. Study on the Influence of Amount of Monomer and Polymer on Polyreaction Reaction by Using Orthogonal Experimental Design Method in Order to Choose the Monomer and Polymer that has the Least Volume Shrinkage Rate, then Develop Photocureable Coating Based on Free Radical Type and Cationic Resin above. the Results Indicate that the UV-Light Photocureable Coating Prepared by Single Functionality Monomer EOEOEA and the DPGDA that Doesn’t Have Neat Molecular Structure has the Less Volume Shrinkage Rate; however, in the Aspect of Prepolymer, the Preparation of UV-Light Photocureable Coating Based on Polyester Acrylate 5600 has the Least Volume Shrinkage Rate. Rely on the Experiment Results above, Prepare the New Kind of UV-Light Photocureable Coating that has Little Volume Shrinkage Rate.
Improvement of JPEG for Color Images by Incorporation of CAM02-UCS and Cubic Spline Interpolation
Authors: Muhammad Safdar , Luo Ming Ronnier , Liu Xiao Yu
Published: January 2015

Image data is always a major fraction of the huge data to be stored or transmitted. That is why researchers have been evolved in finding out different ways and techniques to increase compression rate and reduce information loss. This research investigated the improvement of JPEG compression algorithm by incorporating cubic spline interpolation (CSI) in the sampling stage and four different color spaces in the color space transformation stage. JPEG 1992 standard was considered and results were compared with previous works done by different researchers. The sampling and color space transformation stages of the JPEG algorithm were taken into consideration. In the color space transformation stage, two linear and non-uniform color spaces RGB and YIQ, and two uniform color spaces CIELAB and the CIECAM02 based uniform color space CAM02-UCS were incorporated and investigated. The sampling stage of JPEG contributes much to improve the compression rate at the cost of loss of some information. Current study incorporated cubic spline interpolation technique to reduce the information loss at this typical stage. The CIEDE2000 color difference formula, which is best correlated with the human visual perception, was used as metric to investigate performance of newly proposed improvements in JPEG algorithm for color image compression. The test results showed that the proposed modifications in the two stages of JPEG algorithm improved its performance in terms of compressibility and quality, and the difference in performance was statistically significant. Psychophysical experiments were also performed which validated the test results.
Digital Color Appearance Evaluation System
Authors: Liang Jing , Piao Yu Tong , Wang Shu Jie , Huang Hao
Published: January 2015

The purpose of this study is to achieve chromatic aberration, color appearance attribute value fast computing; and observe conditions in different color appearance of digital image conversion between digital color appearance evaluation system. Digital color appearance evaluation system through analysis showed that the final form that can be color difference calculation, calculation of color appearance attributes forward and reverse computing, digital image conversion, to obtain a digital image tristimulus values, color point color display and so on.
Changes in the Spectral Characteristics of Aluminum Films Deposited under Assisting Argon Ion Beam
Authors: Umnov Sergey P. , Asainov Oleg Kh. , Popova Svetlana N. , Lemachko Aleksey N.
Published: January 2015

High-reflectance aluminum films are widely used in applied optics. As part of this work, we deposited aluminum films on glass substrates by magnetron sputtering using argon ion beam assistance. The reflectivity of the films obtained was measured on the SF-256 spectrophotometer. The microstructure and topology of the films were examined with a transmission electron microscope (TEM), X-ray diffraction (XRD) and atomic force microscope (AFM). The studies have shown that the aluminum films deposited with ion assistance have higher reflectance in the UV range than the films formed by magnetron sputtering alone. The results of TEM and AFM measurements show that the geometric factor (crystallite size, surface roughness) is not the reason for the increase of reflectivity. X-ray diffraction analyses have shown a significant increase in microstress in the aluminum films deposited with ion assistance, which is caused by an increase in the defect density of the vacancy-type crystal structure. The results have shown that the increase in the density of crystal defects leads to an increase in reflectance in the UV range.
Nonlinear Electrodynamic Effects of the Torch Discharge Argon Plasma
Authors: Lutsenko Yuriy , Miskun Ivan , Zelenetskaya Ekaterina
Published: January 2015

The measurements of the amplitude-frequency characteristics were done for the high-frequency torch discharge burning in argon. The resonant character of the electric field fourth harmonic attenuation was found. The axial harmonics distribution measurements of the electric field were done for the torch discharge burning in argon-air mixture. The electron concentration in the investigated plasma discharge was evaluated. The selective influence of the change in the electron concentration on the propagation process of the fourth harmonic of the electric field was found.
Plasma Module Based on High Frequency Torch Plasmatron for the Research of the Processes of Plasma Utilization and Immobilization of Closed NFC Wastes
Authors: Karengin A.G. , Karengin A.A. , Novoselov I.Yu. , Tundeshev Nikolay V.
Published: January 2015

This article shows the dependence of high frequency torch (HFT) plasmatron parameters on external mode settings. The optimal operation of the plasma stand is achieved experimentally; the numerical characteristics of this mode are calculated. Based on the burning indicators of the combustible waste percentage, the possibility of using plasma stand for disposal of these wastes was concluded.
Eddy Current Method for Testing of Metals under Simultaneous Exposure to Radiation and Hydrogenation
Authors: Larionov Vitalii V. , Lider Andrey M. , Bordulev Yurii S.
Published: January 2015

The study demonstrated that implementation of eddy currents of different frequencies enables identification of altered phase composition, diffusion properties and metal hydrogenation extent. Using the newly developed parameters of eddy current method sensitivity, we have established that the change of a metal structure from one layer to another is identified by the currents of different frequency according to the depth of their penetration into a metal.
Portable Gamma-Ray Spectrometer for High Intensity Beam Measuring
Authors: Vukolov Artem , Gogolev Aleksey , Cherepennikov Yury , Ogrebo Andrey , Egioya Alexander
Published: January 2015

The paper presents the development of the Laboratory "X-ray Optics" of the Institute of Applied Physics and Technology of Tomsk Polytechnic University, a portable gamma-ray spectrometer, which dimensions are 50×20×30 mm. The device is able to count and analyze gamma quanta with energies from hundreds of keV up to units of MeV with loading up to 109 pulses/min. The problem has been solved by improving the known scintillation counters, using modern silicon photomultiplier tubes, selecting the optimal scintillators and developing original electronic scaler.
Polarization Bremsstrahlung by Relativistic Electrons in Backscattering Geometry for Diagnosing Atomic Structure of Polycrystals
Authors: Alekseev Vladimir I. , Eliseev Alexander N. , Irribarra Esteban F. , Kishin Ivan A. , Kubankin Alexander S. , Levina Valentina S. , Nikulin Ivan S. , Nazhmudinov Ramazan M. , Sergienko Vladimir I.
Published: January 2015

The measurements of X-ray polarization’s bremsstrahlung in the back scattering geometry (PBBS) generated during the interaction of 7 MeV electrons with polycrystalline foils of copper and niobium were performed. The analysis has shown a good agreement of the spectral width and position of the peaks with the theoretical calculations. The obtained results confirm the availability to develop a new method based on the PBBS peaks measurements for diagnostics of materials with a polycrystalline atomic structure.
Formation of Shear Zone's Defect Structure in F.C.C. Metals
Authors: Starenchenko Vladimir A. , Cherepanov Dmitry N. , Selivanikova Olga V. , Barbakova Elena A.
Published: January 2015

As a result of the work of Frank-Read dislocation source the shear zone is formed. It is filled with deformation defects forming as a consequence of the dynamic features of the motion of dislocation loops and due to the interaction of shear forming dislocations with dislocations of non-coplanar slip systems. The accumulation of jogs on screw segments leads to the fact that the edge segments are moving faster than the screw segments so the shear zone is swept out generally by screw segments. The expressions of the intensities of the deformation defects accumulation in shear zones are given in the article. The point defects plays special role in the formation and evolution of misorientation substructures into deformed monocrystals, polycrystals and nanocrystals.
Conceptual Approach to Handling Irradiated Nuclear Fuel in Storage Systems
Authors: Shamanin Igor , Bedenko Sergey , Gubaydulin Ildar , Novikova Natalia , Plevaka Maria
Published: January 2015

This work considers conceptual approaches to handling fuel irradiated in thermal reactors in technical “dry storage” systems. The experiments carried out in the work allow for improving the ecological, nuclear and radiation safety systems of storage and transportation of irradiated nuclear fuel for new generation reactors.
Degradation of Beryllium Reflector Properties on the IRT-T Reactor
Authors: Naymushin Artem , Chertkov Yuri , Varlachev Valeriy , Anikin Mikhail , Chyuykina Anastasiya , Ermakova Yanina
Published: January 2015

This paper presents the results of a numerical calculation of beryllium poisoning of an IRT-T reactor and its effect on the excess reactivity and neutron flux density in the beam ports. Also, the prediction of 6Li and 3He poison concentrations in the beryllium reflectors of the IRT-T reactor is presented. The results are based on MCU Monte Carlo calculations. The part of reactor history was taken into account to predict reliable values of parasitic isotope concentrations. The impact of shut-down time and operating time on the excess reactivity is shown. The results presented in this paper could be used to perform the safety analysis of an IRT-T reactor.
Facilities for Neutron Capture Therapy at IRT MEPhI Nuclear Reactor
Authors: Sheino Igor N. , Khokhlov Vyacheslav F. , Izhevskiy Pavel V. , Sakharov Valery K. , Portnov Alexander A. , Wagner Alexander A.
Published: January 2015

One of the problems in developing the neutron capture therapy (NСT) of malignancies is the absence (or unavailability) of neutron sources having necessary intensity and spectrum. The first (and the only so far) experimental medical irradiation units for neutron capture therapy in Russia were created at IRT MEPhI nuclear reactor. At the exit of the tangential channel, there is a device for irradiating superficial tumors by thermal neutrons. A combined beam of thermal and epithermal neutrons that allows processing deep-lying tumors was implemented on the basis of a thermal column.
Influence of the Graphite’s Lifespan on the Design Value of Fuel Burnup in High Temperature Gas-Cooled Reactors
Authors: Baybakov Denis F. , Golovatsky Aleksey V. , Naymushin Artem G. , Nesterov Vladimir N. , Savanyuk Savva N. , Shamanin Igor V.
Published: January 2015

This paper describes a method of determining the correlation of the exhausted graphite fuel blocks’ lifespan in high temperature gas-cooled reactors with the fuel burnup. The axial distribution of the local values of the exhausted lifespan of graphite fuel blocks was obtained. It is shown that for ensuring the compliance of the design value of the fuel burnup with graphite fuel blocks operability, it is necessary to reduce the average mixed temperature of the helium coolant leaving the reactor core and as well as reduce the time between nuclear fuel recharges.
Way to Obtain Uranium Hexafluoride
Authors: Orlov Аleksey A. , Malyugin Roman V.
Published: January 2015

The article contains an analytical overview of technologies used for obtaining UF6. The structures of devices for obtaining UF6 have been considered. Their advantages and drawbacks have been outlined. It has been shown that plasma reactors using uranium tetrafluoride as a raw material are the most efficient in obtaining UF6.
Investigation of Multilayered Film Structure Properties for Creation of Hydrogen Selective Membrane
Authors: Ryabchikov Alexander , Golovkov Vladimir , Sivin Denis , Sokhoreva Valentina
Published: January 2015

The paper presents the investigation results of an opportunity to create a new type membrane with increased characteristics for the pure hydrogen release from hydrogenous gas mixtures. A multilayer coating formed from alternating layers of Nb–Ti and Ti/TiNi on the substrates was used to create hydrogenselective membranes. The substrates of two types were used: plates of porous metal with submicron pore sizes and nickel plates with submicron columnar structure grown on its surface by means of nickel synthesis via a template.
Biological Dosimetry of the Irradiation Emitted by NG-12I Neutron Generator
Authors: Kandakova Elena , Vazhenin Andrey , Kiryushkin Sergey , Pryakhin Evgeniy , Akleev Aleksandr
Published: January 2015

The aim of the present work was to carry out biological dosimetry of the irradiation generated by NG-12I system implementing the stem hemopoietic cells survival in CBA mice with the use of the test of exogenous colony formation. The rate of relative biological effectiveness (RBE) for radiation of NG-12I system, defined as a ratio of equal effective doses (in our research we used D0), amounted to 1.53 for an acute neutron irradiation and 3.05 for a fractionated neutron irradiation. Obtained data allows defining a total dose and one fraction dose of a neutron irradiation of NG-12I system for the complex photon-neutron therapy of oncological patients.
Breast Scintigraphy with 199Tl in Diagnosis of Breast Cancer
Authors: Titskaya Anna , Chernov Vladimir , Slonimskaya Elena , Sinilkin Ivan , Zelchan Roman
Published: January 2015

To study the diagnostic capabilities of emission single photon computed tomography with 199Tl in imaging of breast cancer 90 women with breast diseases were included in the study. During the research high indications of specificity 96.7% were obtained in the detection of breast cancer. The sensitivity of breast cancer visualization was 95%, while in the detection of tumors smaller than 10mm, the sensitivity was 75%, in detecting tumors more than 10mm - 98%. Considering the high sensitivity and specificity of SPECT with 199Tl, we can recommend the use of this method as an additional diagnostic criterion in cases where other methods of radiation diagnosis and the results of morphological studies do not provide a clear answer.
Methods of Synthesis of Radiopharmaceuticals Based on Fatty Acids Marked with 99mTc and Perspectives of their Application
Authors: Belyanin Maxim L. , Stepanova Elena V. , Minin Stanislav M. , Lyshmanov Yuri B. , Filimonov Victor D.
Published: January 2015

The present paper gives an analytical review of methods for obtaining of radiopharmaceuticals that are based on 99mTc -labeled fatty acids and their use in cardiology. We make conclusion on the efficiency of application and investigation of 99mTcfatty acids radiopharmaceuticals that contain chelate groups EDTA or DTPA. In this study, quantum-chemical modeling of one of such conjugates is conducted and its bioavailability is confirmed.
Possibilities of Cardiac Scintigraphy with 123I-Iodophen in Patients with Various Forms of Cardiomyopathies
Authors: Lishmanov Yuriy B. , Minin Stanislav M. , Saushkina Yulia V. , Gulya Marina O.
Published: January 2015

We explore the possibilities of cardiac scintigraphy with 123I-iodophen in patients with various forms of cardiomyopathy. In patients with ischemic cardiomyopathy, defects of metabolism correspond to the zones of postinfarction cardiosclerosis and uncoordinated defects typical for hybernation. In patients with dilated cardiomyopathy diffusion and heterogeneous character of impairment of coronary microcirculation and metabolism was predominantly identified. The distribution of 123I-iodophen in the LV myocardium has diffusion and uneven, mosaic character without strict compliance with the basin of the certain coronary artery. A distinctive feature of the non-coronary cardiomyopathy is the absence of mismatched defects of perfusion and metabolism.
Possibility of Using 99mTc-HMPAO in Estimating Long-Term Prognosis of Cerebral Complications of Coronary Artery Bypass Graft
Authors: Lishmanov Yuri B. , Efimova Nataliya Yu. , Chernov Vladimir I. , Efimova Irina Yu. , Akhmedov Shamil D.
Published: January 2015

The aim of this work was to investigate the possibility of using brain SPECT with 99mTc-HMPAO to estimate long-term prognosis of the development of neurocognitive deficits in patients after coronary artery bypass graft (CABG). The study included 22 patients with coronary artery disease who underwent a standard estimate of neurological status, 99mTc-HMPAO brain SPECT and neuropsychological testing before CABG, 14 days and 6 months after surgical intervention. The results showed that 99mTc-HMPAO is useful radiopharmaceutical for evaluation of long-term prognosis of the development of neurocognitive deficits in patients after CABG. Thus, in 96% of patients after CABG one could observe the early cognitive deficit, which persisted in 55% of cases after 6 months. At that, a correlation between the deterioration of long-term memory after 6 months and a decrease in perfusion in the temporal lobes was detected in the early postoperative period.
Methods of Uranium Hexafluoride Purification
Authors: Orlov Aleksey A. , Malyugin Roman V.
Published: January 2015

The article contains an analytical overview of techniques used for UF6 purification. Structures of respective devices have been considered. Their advantages and drawbacks have been outlined. It has been shown that heat discharge desublimators and multi-chamber devices with two heated walls are the most efficient in UF6 purification.
Reactor Neutrons in Multimodality Treatment of Locally Advanced Breast Carcinoma
Authors: Mardynsky Yury S. , Gulidov Igor A. , Aminov Gamzat G. , Ragulin Yury A. , Kotuchov Igor I. , Gordon Konstantin B.
Published: January 2015

We present long-term treatment outcomes of 201 patients with breast carcinoma who received a radical course of radiation therapy as a component of multimodality treatment. Ninety five of them received mixed photon-neutron therapy (the study group), and 106 patients received photon therapy (control group). All patients had stage III breast cancer. The presented data on the mixed photon-neutron therapy prove feasibility of achievement of high efficiency of treatment and satisfactory level of quality of patient’s life. This approach opens additional opportunities for expansion of a scope of neutrons in oncology.
SPECT with 99mTc-HMPAO and Cognitive Function in Patients with Arterial Hypertension: Impact of Antihypertensive Therapy
Authors: Efimova Irina Yu. , Efimova Nataliya Yu. , Triss Sergey V. , Zyablova Nataliya N.
Published: January 2015

The article is devoted to using brain SPECT with 99mTc-HMPAO for assessment of influence of antihypertensive therapy on the cerebral perfusion and cognitive function in arterial hypertension patients. By means of it is established that antihypertensive therapy has positive impact on brain perfusion within 6 months. In 24 weeks of hypotensive therapy there is an improvement of cognitive function: attention, psychomotor speed and thinking.
Therapy of Malignant Tumor with 6.3 MeV Fast Neutrons
Authors: Musabaeva Lyudmila I. , Lisin Valery A.
Published: January 2015

Results of 30-year experience of using 6.3 MeV fast neutrons for cancer patients have been presented. The use of neutron therapy resulted in improved long-term clinical outcomes in cancer patients. Neutron therapy used alone and in combination with photon therapy for radioresistant malignant tumors resulted in higher overall and recurrence-free survival rates compared to the conventional photon therapy.
Use of  99mTc-HMPAO in Estimating the Antihypertensive Therapy Impact on the Cerebral Perfusion in Patients with Arterial Hypertension Associated with Diabetes Mellitus Type 2
Authors: Efimova Irina Yu. , Belokopytova Nataliya V. , Efimova Nataliya Yu. , Lishmanov Yuriy B.
Published: January 2015

The article is devoted to the estimation of the impact of hypotensive therapy on the state of cerebral perfusion in patients with AH, associated with type 2 DM using99mTc-HMPAO brain SPECT. It has been shown that the signs of the brain hypoperfusion and reduced cerebrovascular reserve are observed in patients with AH in combination with type 2 DM even when focal neurological symptoms are absent. Using99mTc-HMPAO brain SPECT it has been found that carvedilol therapy of about 6 months has a positive effect on the cerebral perfusion and cerebrovascular reserve status in these patients.
Use of 99mTc-HMPAO for Scintigraphic Evaluation of Cerebral Microcirculation in the Patients with Persistent Atrial Fibrillation
Authors: Efimova Nataliya Yu. , Chernov Vladimir I. , Efimova Irina Yu. , Popov Sergey V.
Published: January 2015

The objective of this study was to evaluate cerebral perfusion according to SPECT with 99mTc-HMPAO in the patients with the implanted pacemaker because of persistent AF. The study included 17 patients with persistent AF who underwent brain SPECT, assessment of neurological status, cognitive function, and echocardiogram. It was done at baseline and 3 months after the establishment of a full cross-blockade by radiofrequency ablation of the atrioventricular connections and pacemaker implantation. The results showed that 99mTc-HMPAO is useful radiopharmaceutical for assessment of cerebral perfusion in patients with persistent AF. The received data indicate that the pacemaker implantation surgery 3 months later, increasing left ventricular ejection fraction, systolic and cardiac outputs, has a positive effect on cerebral perfusion and leads to the improved neurocognitive function in patients.
Use of 99mTc-HMPAO in Evaluating Cerebrovascular Events in the Patients with Metabolic Syndrome: Relationship to Cognitive Function
Authors: Efimova Nataliya Yu. , Chernov Vladimir I. , Efimova Irina Yu. , Lishmanov Yuriy B.
Published: January 2015

The purpose of this study is to investigate the potential of brain tomoscintigraphy with 99mTc-HMPAO in the evaluation of cerebral blood flow in the patients with metabolic syndrome (MS), as well as the study of the relationship of brain perfusion and cognitive function. The study included 54 patients with MS who have undergone perfusion single-photon emission tomography (SPECT) of the brain and neuropsychological testing before and after antihypertensive therapy. Thus, brain SPECT with 99mTc-HMPAO in the patients with MS provides an opportunity to diagnose diffuse disorders of cerebral circulation in the different regions of the brain, leading to cognitive dysfunction in these patients. Close relationship between the parameters of cerebral perfusion and cognitive performance status of the patients was identified.
Use of SPECT with 99mTc-Pyrophosphate Combined with a Perfusion Myocardium Scintigraphy in the Evaluation of Inflammatory Changes of the Heart in Patients with Persistent Atrial Fibrillation
Authors: Sazonova Svetlana I. , Lishmanov Yuri B. , Ilyushenkova Julia N. , Batalov Roman E. , Rogovskaya Julia V.
Published: January 2015

The purpose was to study the utility of technetium 99m - pyrophosphate in the diagnoses of inflammatory changes of the heart in patients with persistent atrial fibrillation. The study included 30 patients (20 men and 10 women, mean age is 46 ± 9.92 years) with idiopathic persistent atrial fibrillation. To identify the foci of inflammatory changes in the myocardium the scintigraphy with 99mTc-Pyrphotech and myocardial perfusion scintigraphy with 99mTc-methoxy-isobutyl-isonitrile (99mTc-MIBI) was performed before the operation. Later, both scintigrams were combined. During the surgical intervention, in all patients an endomyocardial sampling for histological and immunohistochemical study was performed. Pathological accumulation of 99mTc-Pyrphotech in the myocardium was detected in 8 (26%) of examined patients. In 20% of cases the cause of "idiopathic" form of AF is latent lymphocytic or polymorphocellular myocarditis of viral etiology. Scintigraphy with 99mTc-Pyrphotech can serve as one of the primary methods for non-invasive diagnosis of myocardial inflammation at the given form of arrhythmia.
Use of Technetium-99m-Labelled Sodium Diphosphate Decahydrate to Assess Right Ventricle Dysfunction in Patients with Pulmonary Embolism
Authors: Zavadovsky Konstantin V. , Krivonogov Nikolay G. , Lishmanov Yury B.
Published: January 2015

The objective of this study was to identify the signs of the right ventricular dysfunction in patients with non-massive pulmonary artery thromboembolism (PE) using radionuclide gated blood pool SPECT (GBPS). The study included 55 patients: 40 with PE, and 15 - control group. Radionuclide studies included perfusion-ventilation scintigraphy and GBPS. GBPS results suggest that the signs of right ventricular dysfunction in PE are: the reduction in its stroke volume, as well as reduction in the peak filling and ejection rate. GBPS results allow distinguishing acute thromboembolism and chronic post-thromboembolic pulmonary hypertension.
Obtaining Technetium-99m-Labeled Glucose Derivatives
Authors: Skuridin Viktor S. , Stasyuk Elena S. , Ilyina Ekaterina A. , Rogov Alexander S.
Published: January 2015

The possibility of obtaining and using technetium-99m-labeled glucose derivatives for the diagnosis of malignant tumors by the method of single photon emission computed tomography (SPECT) has been considered. The level of international and domestic developments on this topic has been analyzed. The authors made an attempt to develop pilot batches of lyophilizates on the basis of various glucose derivatives for further obtaining appropriate radiopharmaceuticals (RPC).
Possibility of Nanocolloid Radiopharmaceutical Using for the Visualization of Sentinel Lymph Nodes in Patients with Gastric Cancer
Authors: Sinilkin Ivan , Chernov Vladimir , Afanas’ev Sergey , Titskaya Anna , Zelchan Roman
Published: January 2015

We study the possibilities of radionuclide methods of research for identification of sentinel lymph nodes (SLN) in gastric cancer. As a result of the intraoperative radiometric research the SLN were identified in all 48 patients. The study of distant lymph nodes reveals the presence of a metastatic lesion of SLN in 27 patients (56.2 %). In 21 patients (43.8 %) there was no metastatic lesion of SLN. Intraoperative radiometric indication allows to determine the "sentinel" lymph nodes with a sensitivity of 100% and a specificity of 100%. The study of "sentinel" lymph nodes is indicated for patients with depth of invasion of T1-T2 and tumor size of less than 3 cm.
Dose Rate Spatial Distribution Produced by the Pulsed X-Ray Source in the Radiographic Examination
Authors: Miloichikova Irina , Stuchebrov Sergei , Krasnykh Angelina , Wagner Alexander
Published: January 2015

In the article the dose rate measurement technique of the pulsed X-ray source RAP-160-5 is presented. The examples of the dose rate spatial distribution for the different pulsed X-ray tube parameters at the different distance between the pulsed X-ray source focus and the detector are demonstrated. The recommendations for the radiation dose optimization to the objects under investigation from the different distance between the pulsed X-ray source focus and the detector are proposed.
Application of Cold Atmospheric Pressure Plasmas for Biological Tissue Treatment
Authors: Aleinik Aleksandr N. , Baykov Aleksandr N. , Dambaev Georgiy Ts. , Semichev Evgeniy V.
Published: January 2015

New experiments using atmospheric pressure plasma have found large application in biology and medicine. Cold air plasma treatment can be used to modify the surface of different materials for a variety of applications. The emission spectroscopy data confirmed the presence of different reactive species in the discharge gap. Surface treatments using this dry plasma technology offer an environmentally friendly alternative to the conventional wet chemical methods of microorganisms destruction, biological tissue treatment, in vitro and in vivo cell treatment. The use of cold plasma technology removes contaminants at the nanometer level.
Application of Void-Free Filling Technology for Additional Safety Barriers Creation during Uranium-Graphite Reactors Decommissioning
Authors: Izmestiev Andrey , Pavliuk Alexander , Kotlyarevsky Sergey
Published: January 2015

The paper presents the results of the best material selection for additional safety barrier construction during uranium-graphite reactors decommissioning. The research findings show that the best material for safety barriers is clay-containing natural material of various types with counter-migrational and counter-filtrational qualities. We have demonstrated a technology for void-free filling of cavities in the reactor space of under-decommissioning uranium-graphite reactors on the site of JSC Pilot and Demonstration Center for Decommissioning of Uranium-Graphite Nuclear Reactors (PDC UGR). This will make it possible to construct reliable man-made geo-barriers and prevent the release of radionuclides from the repository into the environment for thousands of years.
Approaches to Modeling UF6 Desublimation Process
Authors: Orlov Aleksey A. , Malyugin Roman V.
Published: January 2015

The article contains an overview and analysis of the existing approaches to mathematical modeling of uranium hexafluoride desublimation process. The drawbacks of the existing mathematical models have been shown. The concept of conducting theoretical researches and optimizing desublimation process has been developed.
Assessing the Feasibility of Complex Recycling of SNF Reprocessing Waste Using RF Torch Air Plasma
Authors: Karengin Alexander G. , Novoselov Ivan Yu. , Tundeshev Nikolay V.
Published: January 2015

The work studies the implementation of air plasma of radiofrequency torch for the complex recycling of reprocessed SNF waste treated in the form of dispersed aqueous organic compositions (AOCs). The study shows the practicability of magnetic separation for the effective extraction of dispersed solids, including magnetic iron oxide, formed in water suspensions.
Capacity Pump Control by Dual-Channel Adaptive System with Throttle and Frequency Control
Authors: Goryunov Aleksey G. , Ivanov Konstantin A. , Nadezhdin Igor S.
Published: January 2015

The article focuses on flow stabilization system of the organic phase. Emphasis is placed on the control system design which provides an effective damping of a flow rate of the organic phase extraction plant. In this paper the development of the control system using modern simulation tools and the results of the tests are presented.
Harmonization Values of Downloads and Operating Modes of Interconnected Devices Production of Uranium Hexafluoride
Authors: Nadezhdin Igor S. , Krinitsyn Nikolay S.
Published: January 2015

The article is devoted to the problem of load agreement of solid-phase components into the fluorination and capture apparatus of two technological of uranium hexafluoride production lines. The article describes the process of developing a model of the horizontal part of the combined type apparatus which was included in the dynamic mathematical model of uranium hexafluoride production. The developed algorithm of load agreement was studied on dynamic mathematical model of uranium hexafluoride production.
Hybrid Automatic Control System of the Cascade of Centrifugal Extractors
Authors: Zelenetskaya Ekaterina P. , Goryunov Alexey G.
Published: January 2015

The paper provides a control system of the cascade of centrifugal extractors. This system is based on a conventional PID controller with elements of neuro-fuzzy logic for on-line tuning system. Neural networks used with fuzzy logic in an automatic control system allowed minimizing the negative impacts of human factor on the purification processes of uranium concentrates. The current system ensures the advanced control of a cascade and stabilization of the uranium concentration at the permissible industrial levels.
Behavior of TiO2-B System under Mechanical Activation
Authors: Demyanyuk Dmitry G. , Dolmatov Oleg Yu. , Isachenko Dmitry S. , Kuznetsov Mikhail S. , Semenov Andrew O. , Chursin Stanislav S.
Published: January 2015

The mechanical activation of the base mixture of TiO2-B was researched in terms of the structural changes leading to the formation of a mixture of micro particles whose volume increases with the increase of the power intensity of the mechanical activation of the furnace charge and it also increases the surface contact area of the components of the mixture participating in the synthesis. The limit of the mechanical activation of the researched system is 120g.
Control Model of SH-Synthesis for Two-Component Systems
Authors: Demyanyuk Dmitry G. , Dolmatov Oleg Yu. , Isachenko Dmitry S. , Kuznetsov Mikhail S. , Semenov Andrey O. , Chursin Stanislav S.
Published: January 2015

The article describes the development of a model for controlling self-propagating high-temperature synthesis. The model is based on computation and theoretical analysis of temperature field dynamics for a propagating combustion wave. The work proves the applicability of this model for the synthesis of boron-containing materials implemented at nuclear power plants. The discrepancy of the model amounts to 20 - 25%, and the satisfactory agreement between the calculation and experimental data testifies the validity of the numerical method and allows calculating any two-component SHS systems.
Molecular Geometries and Theoretical Vibrational Absorption Spcetra of meso-Phenyl and 3,5-Diaryl Substituted BODIPY Dyes
Authors: Gou Gao Zhang , Shi Ling , Chen Xian Lan , Zhou Bo , Liu Wei , Mang Chao Yong
Published: January 2015

The molecular structures and infrared of fourmeso-phenyl and 3,5-diaryl substituted BODIPY dyes, A to D, were investigated theoretically using the gradient-corrected density functional theory B3LYP method under 6-31+G* level. The vibrational and transition modes of spectra were explored in terms of their microscopic origin. According to structure analysis, the intersection angles of BODIPY core withmeso-phenyl were estimated 59-61º and the angles of BODIPY ring with 3,5-diaryl groups were evaluated 38-62º. The solvation energies of four BODIPYs are −26.26, −30.39, −34.1, −27.58 KJ/mol, respectively.
Synthesis, Spectroscopic Properties of Bis-Boc-L-Alanine Modiﬁed 1,8-Naphthyridine Ligand Induced by Hg2+
Authors: Gou Gao Zhang , Zhou Bo , Shi Ling , Chen Xian Lan , Wu Na , Liu Wei
Published: January 2015

One Bis-Boc-L-alanine-1,8-naphthyridine ligand containing amino acid by amido bond named 2,7-Bis-Boc-L-alanine-1,8-naphthyridine (L1) was synthesized and characterized. And there absorption and fluorescence spectra in methanol is presented. It exhibits electronic absorption spectra with λmax at about 340 nm, which can be tentatively assigned to π→π* transition. The emission spectra of L1 in CH3OH shows a mirror symmetry peak with λmax at about 375 nm. Then, the comprehensive study of spectroscopic properties upon titration of L1 with heavy metal ions as ion source in CH3OH was investigated.
Catalytic Oxidation of CO over Ag-Doped Manganese Oxide Catalysts: Preparation and Catalytic Activity
Authors: Fu Zhi Dan , Ye Qing , Cheng Shui Yuan , Wang Dao
Published: January 2015

The manganese oxide (MnO2) sample was synthesized by the reaction of KMnO4 with Mn (Ac)2 using the HNO3 solution as pH regulator. The Ag-doped manganese oxide, Ag/MnO2-Q and Ag/MnO2-H, were synthesized by incorporation method and typical wet impregnation method, respectively. The structure of catalysts was characterized by N2 adsorption/desorption and X-ray diffraction. The influences of preparation methods on the catalytic activity of CO oxidation were studied. The doping of Ag to MnO2 decreased the specific surface area of Ag/MnO2 catalysts, especially for Ag/MnO2-H samples prepared by traditional wet-impregnation method. The Ag/MnO2 catalysts showed higher catalytic activity for CO oxidation than that of MnO2. The catalytic activities of Ag/MnO2 samples strongly depended upon the preparing methods, among which 3Ag/MnO2-Q catalyst, prepared by the incorporation method, was the most efficient catalyst towards the addressed reactions. The excellent performance of 3Ag/MnO2-Q was mainly associated with the good low-temperature reducibility, abundant surface oxygen and broadly dispersed silver oxides species.
Effect of 1-Methylcyclopropene Treatment on the Quality of Rape (Brassica campestris L.) during Cold Storage
Authors: Wei Wen Wen , Yang Xiang Zheng , Feng Jian Hua , Lv Ping
Published: January 2015

Taking ‘HuaGuan’ Rape as material, studied the effect of 1-methylcylopropene treatments on postharvest quality of rape stored under 0 °C. The results indicated that during the storage 1-MCP treatment could inhibit the ethylene production, delay the ethylene peak and the color of rape changed from green to yellow, keep the weight, maintain the good appearance quality of rape.
A Comparative Study on the Wettability between Butterfly and Locust Wing Surface
Authors: Sun Gang , Fang Yan
Published: January 2015

The microstructure, hydrophobicity and chemical composition of the butterfly and locust wing surfaces were investigated by a scanning electron microscope (SEM), a contact angle meter and a Fourier transform infrared spectrometer (FT-IR). The hydrophobicity models were established on the basis of the Cassie equation. The wetting mechanism was comparatively discussed from the perspective of biological coupling. The butterfly and the locust wing surfaces are composed of naturally hydrophobic materials, but exhibit different complex wettability. The butterfly wing surface is of low adhesion (sliding angle 1~3°) and superhydrophobicity (contact angle 151.6~156.9°), while the locust wing surface is of extremely high adhesion (sliding angle>180°) and superhydrophobicity (contact angle 155.8~157.3°). The complex wettability of the wing surfaces ascribes to the coupling effect of hydrophobic material and rough structure. The butterfly and locust wings can be used as bio-templates for design and preparation of biomimetic functional surface, intelligent interfacial material and no-loss microfluidic transport channels.
Photoproperties of Novel Polystyrene Derivatives with Oligofluorene Pendants
Authors: Hu Xiao Dan , Wang Shao Hong , Hou Zhao Xia , Wang Mei Han , Wang Ning
Published: January 2015

Two kinds of novel polystyrene derivatives with oligofluorene pendants were synthesized by radical polymerization method. The polymers were soluble in common organic solvents and formed nice films by spin-coating. Photoproperties of the products were studied and small differences in conjugated structures between monomers and polymers according to UV-vis spectra. The polymers showed fewer changes in spectra after annealing compared with main-chain conjugated ones, which indicated better thermal stability.
Study of the Pervious Concrete Properties Using the Experimental Design Method
Authors: Fu Tun Chi , Huang Ran , Yeih Wei Chung , Chang Jiang Jhy , Lee Pin Chan
Published: January 2015

The prevention of urban floods and heat islands has become key emerging topics following recent climate changes. Pervious concrete can be used to effectively promote rainwater run-off into the ground, conserve base water, control floods, and regulate temperature. In addition, integrating and applying recycled aggregates, such as slag, in pervious concrete is an emerging development trend for enhancing the protection of environmental sustainability. In this study, we investigated various quality characteristics of pervious concrete. We adopted the design of experiment method as the research method, in which orthogonal arrays, factor response analysis, and analysis of variance were used to analyze data, and water-cement ratio, aggregate size, aggregate type, and cement paste filler ratio were the control factors. The analysis results obtained in this study can serve as a reference for pervious concrete proportioning designs.
Development of Three-Dimensional Printing Technology Based on Deterministic Electrochemical Deposition Method
Authors: Shen Xin Min , Zhou Jian Zhao , Tu Qun Zhang
Published: January 2015

Three-dimensional printing technology based on deterministic electrochemical deposition method has been developed, which is generated from the electroplating. The traditional electroplating system has been improved to ensure the printing process controllable. Through accurate control of the deposition region, deposition rate, and the dwelling time in the printing process, a three-dimensional object of almost any shape can be obtained by deterministic manufacturing process. Through addition of alcohol to the electrolyte, Marangoni effect is generated, which will improve the property of the deposited layer. The deterministic electrochemical deposition not only can decrease the cost of the printing process, but also will promote the application of the 3D printing technique in many fields.
The Influence on the Absorption Properties of Paper Diapers by the SAP Mass Ratio and Fluff Pulp
Authors: Li Guo Biao , Ke Jun Mu , Zhang Hua Ji
Published: January 2015

Super absorbent polymer (SAP) and fluff pulp were used as absorbing materials, and the different SAP mass ratio and fluff pulp were applied to paper diaper absorption core layer. Then, the influence of different SAP/fluff pulp in composite core layer on the paper diapers normal saline absorption rate and topsheet run-off were studied. Results showed that SAP has a significant effect on normal saline absorbency respect to fluff pulp. When the normal saline volume increased, the paper diapers absorption rate about normal saline decreased, while the topsheet run-off increased. When the SAP mass ratio to fluff pulp was 0.5:0.5, the liquid absorbency rate was 35.23 g/g, the paper diaper average absorption rate was 3.96 mL/s, and the biggest topsheet run-off was 13.25 g.
Study on Heat Treatment of Greenhouse Rolling Machine Gear Materials
Authors: Guo Hong Liang , Huang Qi , Li Jing Tao
Published: January 2015

Greenhouse rolling machine is an important equipment of modern agriculture. It is widely used for curtain rolling in greenhouse. The overall structure of greenhouse rolling machine is designed. It uses composite gear system. According to its mechanical requirement, the machine transmission gear materials, steel 45 and 20CrMnTi alloy steel, are selected out. In order to improve the materials’ mechanical property, the materials have been treated by heat. The mechanical property, such as hardness, strength, toughness, etc, when quenching and tempering at different temperatures, is studied. The result provides a theoretical basis for the design of bearing capacity of the rolling machine.
Study on the Method of Heating Asphalt with Solar Energy
Authors: Wang Xiu Shan , Xu Zhi Ling , Yuan Jiang , Fan Tao Tao
Published: January 2015

The color of the asphalt is close to black, it has the good ability of absorbing the solar energy. Road asphalt are solid or half a solid state at normal temperature, it must be reduced the asphalt viscosity to a certain range before used it. The main method of reducing the viscosity of asphalt is heating it. Because of the high temperature of the construction of asphalt, the traditional method on the asphalt heating is electrical heating which needs to consume large amounts of energy. Solar energy is huge and clean energy, which can save large of energy on the asphalt heating. This paper expounds on the solar heating principle, as well as designs the solar heating device to research the energy-saving method on the heating of road asphalt.
The Constitutive Model for High Temperature Flow Behavior of SiC/6168Al Composite
Authors: Wang Jiang , Guo Sheng Li , Liu Sheng Pu , Liu Cheng , Zheng Qi Fei
Published: January 2015

The hot deformation behavior of SiC/6168Al composite was studied by means of hot compression tests in the temperature range of 300-450 °C and strain rate range of 0.01-10 s-1. The constitutive model was developed to predict the stress-strain curves of this composite during hot deformation. This model was established by considering the effect of the strain on material constants calculated by using the Zenter-Hollomon parameter in the hyperbolic Arrhenius-type equation. It was found that the relationship of n, α, Q, lnA and ε could be expressed by a five-order polynomial. The stress-strain curves obtained by this model showed a good agreement with experimental results. The proposed model can accurately describe the hot flow behavior of SiC/6168Al composite, and can be used to numerically analyze the hot forming processes.
Studies on Microstructure of Cu-SiC Compounds by Mechanical Alloying
Authors: Chen Liang , He Zhan Wen
Published: January 2015

Cu - SiC composite powders were discussed in this paper the microstructure after ball mill, through to the ball mill after Cu-SiC composite powder particle size and lattice constant analysis, confirmed the high-energy ball mill to Cu-SiC micro structure of the binary alloy. The experimental results show that the ball mill after 20 h, Cu particle size has a larger extent reduce after high-energy ball mill and SiC lattice constant increase.
History of Luminescence from Ancient to Modern Times
Authors: Virk Hardev Singh
Published: January 2015

Luminescent phenomena have fascinated mankind since the earliest times. The light from the aurora borealis, glow worms, luminescent wood, rotting fish and meat are all examples of naturally occurring luminescence. E. Newton Harvey’s 770 page volume “A History of Luminescence: From the Earliest Times until 1900” is a classic which narrates interesting stories from ancient cultures to modern times. The earliest written account of a solid state luminescent material comes from a Chinese text published in the Song dynasty (960–1279 A.D.). The Buddhist sacred jewel, called "hashi-no-tama" in Japan, is alleged to be self-luminous and to shed a brilliant light on its surroundings. In the Svetasvatara Upanishad, probably recorded at some time before the sixth century BC, we find a mention of fire-flies as one of the manifestations of Brahma.