bluuebunny/crossref_metadata_2025 huggingface dataset:
Preparation of Anti-Human Podoplanin Monoclonal Antibody and its application in Immunohistochemical Diagnosis
Authors: Xie Chengjie , Wang Rongzhi , Saeed Abdullah F. U. H. , Yang Qinghai , Chen Huiling , Ling Sumei , Xiao Shiwei , Zeng Linmao , Wang Shihua
Published: June 2018

Podoplanin (PDPN), a 38 kDa transmembrane sialoglycoprotein from human, is expressed in lymphatic endothelial cells but not in vascular endothelial cells, and has been considered as a specific marker of lymph. In this study, the gene encoding the extracellular part of PDPN (ePDPN) was synthesized and used to expressed fusion protein ePDPN-His and GST-ePDPN, respectively, in E.coli. The purified GST-ePDPN fusion protein was mixed with QuickAntibody-Mouse5W adjuvant to immune mice, and the antiserum titer was determined by indirect ELISA. A stable cell line named 5B3 generating anti-PDPN monoclonal antibody (mAb) was obtained by hybridoma technology. The isotype of 5B3 cell line was IgG2b, and the chromosome number was 102 ± 4. The 5B3 mAb was purified successfully from ascites fluid through Protein G column, and its affinity constant was 2.94 × 108 L/mol. Besides, excellent specificity of the 5B3 mAb was further demonstrated in ELISA, western blot and immunohistochemistry experiments, suggesting that 5B3 mAb displays similar application value to D2-40, a commercial available antibody. Hence, the current study provides conclusive guidelines for preparation of other mAbs and their applications in immunohistochemistry diagnosis.
Large photoelectric-gating effect of two-dimensional van-der-Waals organic/tungsten diselenide heterointerface
Authors: Cai Zhi , Cao Min , Jin Zhepeng , Yi Kongyang , Chen Xiaosong , Wei Dacheng
Published: June 2018

Photo- or photoelectric-gating modulation is a promising strategy for high-performance photodetectors, which amplifies photoresponsivity by long-lived trapped charges at the interface. However, the performance is normally limited by the uncontrollable trapping process. Here, we develop a large photoelectric-gating, which enhances interfacial charge trapping process by a van-der-Waals interface with an electric-gating tunable energy barrier in the band alignment. By synergy of photo-gating and electric-gating effects, responsivity and detectivity of 1,4-bis(4-methylstyryl)benzene/tungsten diselenide (WSe2) increase by 25-fold and 3-fold to 3.6 × 106 A/W and 8.6 × 1014 Jones. High-quality two-dimensional van-der-Waals interface is of great importance. Sufficient supply of gas-phase molecules in physical vapor deposition is pivotal to obtain such interface between organic crystal and WSe2. As an application, an electric-gating switchable photodetector has been developed, showing great potential of this strategy not only in high-performance photodetectors but also in new photoelectrical devices.
Genomic evidence for the degradation of terrestrial organic matter by pelagic Arctic Ocean Chloroflexi bacteria
Authors: Colatriano David , Tran Patricia Q. , Guéguen Celine , Williams William J. , Lovejoy Connie , Walsh David A.
Published: June 2018

The Arctic Ocean currently receives a large supply of global river discharge and terrestrial dissolved organic matter. Moreover, an increase in freshwater runoff and riverine transport of organic matter to the Arctic Ocean is a predicted consequence of thawing permafrost and increased precipitation. The fate of the terrestrial humic-rich organic material and its impact on the marine carbon cycle are largely unknown. Here, a metagenomic survey of the Canada Basin in the Western Arctic Ocean showed that pelagic Chloroflexi from the Arctic Ocean are replete with aromatic compound degradation genes, acquired in part by lateral transfer from terrestrial bacteria. Our results imply marine Chloroflexi have the capacity to use terrestrial organic matter and that their role in the carbon cycle may increase with the changing hydrological cycle.
Symmetry-based rational design for boosting chiroptical responses
Authors: Tanaka Hiroki , Ikenosako Mina , Kato Yuka , Fujiki Michiya , Inoue Yoshihisa , Mori Tadashi
Published: June 2018

Chiral molecules play indispensable roles in advanced materials and technologies. Nevertheless, no conventional, yet reliable logical strategies are available for designing chiral molecules of desired chiroptical properties. Here, we propose a general protocol for rationally aligning multiple chiral units to boost the chiroptical responses, using hexahelicene as a prototype. In this proof-of-concept study, we align two hexahelicenes in various orientations and examine by theoretical calculations to predict the best chiroptical performance for X-shaped and S-shaped double hexahelicenes. We synthesize and optically resolve both double hexahelicenes and show that they exhibit more than a twofold increase in intensity of circular dichroism and circularly polarized luminescence, experimentally validating the protocol. The enhanced chiroptical responses are theoretically assignable to the electric and magnetic transition dipole moments of component hexahelicenes aligned in the correct symmetry. A guiding principle for designing advanced molecular and supramolecular chiral materials is further discussed.
Increased intake of vitamin B12, folate, and omega-3 fatty acids to improve cognitive performance in offspring born to rats with induced hypertension during pregnancy
Authors: Kemse Nisha , Kale Anvita , Chavan-Gautam Preeti , Joshi Sadhana
Published: June 2018

Vitamin B12, folic acid, and docosahexaenoic acid levels are reported to be altered in women with preeclampsia.
Pure-color and dual-color emission from BODIPY homopolymers containing the cardo boron structure
Authors: Yamane Honami , Tanaka Kazuo , Chujo Yoshiki
Published: June 2018

Pure-color and dual-color emission were accomplished with homopolymers composed of modified boron dipyrromethene involving cardo boron.
Ratiometric real-time monitoring of hydroxyapatite–doxorubicin nanotheranostic agents for on-demand tumor targeted chemotherapy
Authors: Kang Yao , Sun Wen , Fan Jiangli , Wei Zimu , Wang Suzhen , Li Mingle , Zhang Zhen , Xie Yahui , Du Jianjun , Peng Xiaojun
Published: June 2018

Hydroxyapatite–doxorubicin nanotheranostic agents are used for tumor-targeted chemotherapy, providing a platform for ratiometric real-time tracking of drug release.
Administration of raloxifene hydrochloride nanosuspensions partially attenuates bone loss in ovariectomized mice
Authors: Han Meihua , Qi Xiaoyu , Bi Dongdong , Li Yijing , Guo Yifei , Wang Xiangtao , Feng Li
Published: June 2018

RLX-NSps could partially attenuate bone loss more effectively than RLX solution in OVX mice by inhibiting bone resorption and improving the ability of BMSCs to proliferate and their osteogenic differentiation to some extent.
Degradation kinetics and mechanism of pentoxifylline by ultraviolet activated peroxydisulfate
Authors: Kamińska B. , Majewska K. , Skwierawska A. , Kozłowska-Tylingo K.
Published: June 2018

Degradation of pentoxifylline (PTX) by sodium peroxydisulfate (SPDS) assisted by UV irradiation has been investigated in deionized water.
Co-delivery of doxorubicin and itraconazole by Pluronic® P123 coated liposomes to enhance the anticancer effect in breast cancers
Authors: Lin Yi , He Xiaodan , Zhou Dinglun , Li Li , Sun Jiawei , Jiang Xuehua
Published: June 2018

A Pluronic® P123 modified liposome-based co-delivery system of hydrophilic doxorubicin and hydrophobic itraconazole for enhanced anticancer effect in breast cancers.
SnS/C nanocomposites for high-performance sodium ion battery anodes
Authors: Yu Seung-Ho , Jin Aihua , Huang Xin , Yang Yao , Huang Rong , Brock Joel D. , Sung Yung-Eun , Abruña Héctor D.
Published: June 2018

SnS/C nanocomposites were simply prepared as anode materials for sodium-ion batteries. They showed excellent cycling stability at various current densities with more than 90% of its capacity delivered when the current increased from 50 to 500 mA g−1.
The mutual effects between macrophages and cartilage templates in the process of subcutaneous endochondral bone formation
Authors: Huang Jing , Zhou Yi , Wang Yan , Cai Xinjie , Wang Yining
Published: June 2018

The interplay between implants and the recipient immune environment is key to the long-term effectiveness of bone tissue engineering.
Rhodium catalyzed cascade cyclization featuring B–H and C–H activation: one-step construction of carborane-fused N-polyheterocycles
Authors: Lyu Hairong , Quan Yangjian , Xie Zuowei
Published: June 2018

A novel Rh-catalyzed cascade cyclization featuring both carboranyl B–H and aryl C–H activation has been developed, resulting in the one-pot construction of three new B–C and C–C bonds. The isolation and structural identification of a key intermediate provide solid evidence for the reaction mechanism.
Optimization of the pendant chain length in partially fluorinated aromatic anion exchange membranes for alkaline fuel cells
Authors: Ahmed Mahmoud Ahmed Mohamed , Miyatake Kenji
Published: June 2018

Partially fluorinated aromatic polymer-based anion exchange membranes with propylene side chains exhibit high chemical stability and alkaline fuel cell performance.
Nanoporous AuPt and AuPtAg alloy co-catalysts formed by dewetting–dealloying on an ordered TiO2 nanotube surface lead to significantly enhanced photocatalytic H2 generation
Authors: Nguyen Nhat Truong , Ozkan Selda , Tomanec Ondrej , Zhou Xuemei , Zboril Radek , Schmuki Patrik
Published: June 2018

Ordered TiO2 nanotubes decorated with nanoporous AuPt alloyed nanoparticles show a significant enhancement of photocatalytic H2 generation in comparison with either the single metal or non-porous alloys.
Single ion conducting lithium sulfur polymer batteries with improved safety and stability
Authors: Li Zhong , Lu Wenhao , Zhang Nan , Pan Qiyun , Chen Yazhou , Xu Guodong , Zeng Danli , Zhang Yunfeng , Cai Weiwei , Yang Ming , Yang Zehui , Sun Yubao , Ke Hanzhong , Cheng Hansong
Published: June 2018

A PEMA-graft-LiATFSI based single ion conducting polymer electrolyte enables superior electrochemical performance in both Li–Li symmetric cells and Li–S@PAN batteries.
Lithiophilic Co/Co4N nanoparticles embedded in hollow N-doped carbon nanocubes stabilizing lithium metal anodes for Li–air batteries
Authors: Guo Ziyang , Wang Fengmei , Li Zijian , Yang Yu , Tamirat Andebet Gedamu , Qi Haocheng , Han Jishu , Li Wei , Wang Lei , Feng Shouhua
Published: June 2018

A lithiophilic Co/Co4N-N-doped carbon electrode displays a high coulombic efficiency (98.5%) and dendrite-free morphology for long-life Li–air batteries.
Ultralong-lived room temperature triplet excitons: molecular persistent room temperature phosphorescence and nonlinear optical characteristics with continuous irradiation
Authors: Hirata Shuzo
Published: June 2018

Heavy atom-free molecular materials with ultralong-lived room-temperature triplet excitons display nonlinear absorption using ordinary light and persistent room-temperature emission characteristics.
The renal protect function of erythropoietin after release of bilateral ureteral obstruction in a rat model
Authors: Ren Chuan Chuan , Zhu Wen , Wang Qing Wei , Lu Yu Tao , Wang Yan , Zhang Guo Xian , Xie Jia Feng , Wu Jun Wei , Jia Zhi Ming , Zhang Tao , Su Zhi Qiang , Wen Jian Guo
Published: June 2018

Congenital urinary tract obstruction is one of the most frequent malformations in fetuses or neonates, which usually causes profound impairment of renal function including reductions in both glomerular filtration rate (GFR) and tubular handling of water and solutes. Although obstruction can be released by surgical operation, the child will suffer from diuresis for sometime. It has been reported that erythropoietin (EPO) could prevent the down-regulation of aquaporin-2 (AQP2) and urinary-concentrating defects induced by renal ischemia/reperfusion (I/R) injury. However, whether EPO could promote the recovery of renal function and AQP2 expression after releasing of ureteral obstruction has not been reported yet. The purposes of the present study were to investigate the effects of EPO on renal function and AQP2 expression after release of bilateral ureteral obstruction (BUO-R) in rats. The results showed that EPO could promote interleukin (IL) 10 (IL-10) expression; inhibit tumor necrosis factor-α (TNF-α), IL-6, and inducible nitric oxide synthase (iNOS) expressions; reduce the fractional excretion of sodium (FENa) and plasma creatinine (CREA) and urea; and promote the recovery of water and salt handling and AQP2 expression in BUO-R rats, especially in the high dose of EPO-treated group rats. In conclusion, EPO could promote the recovery of renal function and AQP2 expression in BUO-R rats, which may partially associate with its anti-inflammation effect.
Beam‐switching millimetre‐wave antenna using cantilever‐based FSSs
Authors: Kesavan Arun , Mantash Mohamad , Denidni Tayeb Ahmed
Published: June 2018

A beam‐switching antenna for millimetre‐wave applications at 30 GHz is presented in this study. The radiation reconfigurability for a cylindrical dielectric resonator antenna (DRA) is obtained by using a cantilever‐enabled frequency selective surface (FSS). The proposed cantilever‐enabled FSS provides reconfigurable bandpass and band‐stop performance with good isolation between them. The investigation of designed FSS is performed using electromagnetic simulation and an array of the proposed FSS unit cell is fabricated and measured using the free‐space measurement method, which shows a good agreement with the simulation results. Finally, six panels of the 1 × 5 array of the proposed reconfigurable FSS are arranged in a hexagonal configuration around a cylindrical DRA to obtain a reconfigurable radiation pattern in the azimuth plane. A prototype of the proposed radiation reconfigurable DRA is fabricated and the switching radiation patterns are measured at 30 GHz.
Time‐invariant biological networks with feedback loops: structural equation models and structural identifiability
Authors: Wang Yulin , Luo Yu , Wang Mingwen , Miao Hongyu
Published: June 2018

Quantitative analyses of biological networks such as key biological parameter estimation necessarily call for the use of graphical models. While biological networks with feedback loops are common in reality, the development of graphical model methods and tools that are capable of dealing with feedback loops is still in its infancy. Particularly, inadequate attention has been paid to the parameter identifiability problem for biological networks with feedback loops such that unreliable or even misleading parameter estimates may be obtained. In this study, the structural identifiability analysis problem of time‐invariant linear structural equation models (SEMs) with feedback loops is addressed, resulting in a general and efficient solution. The key idea is to combine Mason's gain with Wright's path coefficient method to generate identifiability equations, from which identifiability matrices are then derived to examine the structural identifiability of every single unknown parameter. The proposed method does not involve symbolic or expensive numerical computations, and is applicable to a broad range of time‐invariant linear SEMs with or without explicit latent variables, presenting a remarkable breakthrough in terms of generality. Finally, a subnetwork structure of the C. elegans neural network is used to illustrate the application of the authors’ method in practice.
Electromagnetic interference shielding properties of graphene/MWCNT hybrid buckypaper
Authors: Lu Shaowei , Chen Dandan , Shao Junyan , Bai Yaoyao , Tian Caijiao , Ma Keming , Wang Xiaoqiang
Published: June 2018

A type of lightweight and flexible graphene/multi‐walled carbon nanotube (MWCNT) hybrid buckypaper (BP) is fabricated, which show superior shielding effectiveness (SE) of electromagnetic interference and without polymer. The EMI SE of graphene/MWCNT hybrid BP with thickness of 130 μm is up to ∼51 dB at 8 GHz, which is much higher than that of pure MWCNT BP with same thickness (∼32.5 dB) and the best electrical conductivity is up to 10,000 S/m. More important, the improvement in EMI SE is contributed to the SE absorption, while the SE reflection is almost unchanged. This paper‐like material is smooth, tough, and flexible enough to be attached on the complex curved surface structure. A facile way to fully develop graphene and MWCNT in lightweight and flexible EMI shielding materials and devices is provided here.
Modeling dust emission in PN IC 418
Authors: Gómez-Llanos V. , Morisset C. , Szczerba R. , García-Hernández D. A. , García-Lario P.
Published: June 2018

We investigated the infrared (IR) dust emission from PN IC 418, using a detailed model controlled by a previous determination of the stellar properties and the characteristics of the photoionized nebula, keeping as free parameters the dust types, amounts, and distributions relative to the distance of the central star. The model includes the ionized region and the neutral region beyond the recombination front (photodissociation region, or PDR), where the [O I] and [C II] IR lines are formed. We succeeded in reproducing the observed infrared emission from 2 to 200μm. The global energy budget is fitted by summing up contributions from big grains of amorphous carbon located in the neutral region and small graphite grains located in the ionized region (closer to the central star). Two emission features seen at 11.5 and 30μm are also reproduced by assuming them to be due to silicon carbide (SiC) and magnesium and iron sulfides (MgxFe1−xS), respectively. For this, we needed to consider ellipsoidal shapes for the grains to reproduce the wavelength distribution of the features. Some elements are depleted in the gaseous phase: Mg, Si, and S have sub-solar abundances (−0.5 dex below solar by mass), while the abundance of C + N + O + Ne by mass is close to solar. Adding the abundances of the elements present in the dusty and gaseous forms leads to values closer to but not higher than solar, confirming that the identification of the feature carriers is plausible. Iron is strongly depleted (3 dex below solar) and the small amount present in dust in our model is far from being enough to recover the solar value. A remaining feature is found as a residue of the fitting process, between 12 and 25μm, for which we do not have identification.
Dust in galaxy clusters: Modeling at millimeter wavelengths and impact on Planck cluster cosmology
Authors: Melin J.-B. , Bartlett J. G. , Cai Z.-Y. , De Zotti G. , Delabrouille J. , Roman M. , Bonaldi A.
Published: June 2018

We have examined dust emission in galaxy clusters at millimeter wavelengths using the Planck 857 GHz map to constrain the model based on Herschel observations that was used in studies for the Cosmic ORigins Explorer (CORE) mission concept. By stacking the emission from Planck-detected clusters, we estimated the normalization of the infrared luminosity versus mass relation and constrained the spatial profile of the dust emission. We used this newly constrained model to simulate clusters that we inject into Planck frequency maps. The comparison between clusters extracted using these gas+dust simulations and the basic gas-only simulations allows us to assess the impact of cluster dust emission on Planck results. In particular, we determined the impact on cluster parameter recovery (size, flux) and on Planck cluster cosmology results (survey completeness, determination of cosmological parameters). We show that dust emission has a negligible effect on the recovery of individual cluster parameters for the Planck mission, but that it impacts the cluster catalog completeness, reducing the number of detections in the redshift range [0.3–0.8] by up to ∼9%. Correcting for this incompleteness in the cosmological analysis has a negligible effect on cosmological parameter measurements: in particular, it does not ease the tension between Planck cluster and primary cosmic microwave background cosmologies.
The Effect of Temperature Variation on Water Scrubber System to Optimize Biogas Purification
Authors: Abdurrakhman Arief , Kurniawan Dhirga , Machrus Adhim Moch
Published: June 2018

Biogas is made from the anaerobic process, which methane (CH4) as a primary element with some other elements. The composition of biogas in the experiment still contains H2S gas pollutants by 41,76 ppm. The amount of H2S content can reduce CH4 composition, so it has a lot of efforts to reduce H2S in biogas. One of them used water scrubber system, but the water scrubber system always changed according to the temperature ambient. It can cause inconsistency biogas quality, which is the reduction of H2S always changed. Another study showed that the speed of the water flow of 5.5 to 11 liters / min and water temperature of 10-25 °C, can reduce the H2S content in biogas up to 4.5 - 8%, of the initial content by 37,8% to 43.6%. So that is needed the design of water cooling system on purifying biogas. While this research aims that the lower water temperature will increase the effectiveness of the reduction of H2S with water temperature 15-20 °C. From the experiments that have been carried out test results obtained when the water temperature 20 °C the content of H2S was 0.7 ppm when the water temperature 17°C H2S content was 0.6 ppm when the water temperature 15 ° C H2S was 0.5 ppm.
Design of Hydro Power by Using Turbines Kaplan on The Discharge Channel Paiton 1 and 2
Authors: Sosilo Alvin K. , Hadi Harsono , Soehartanto Totok
Published: June 2018

Condenser water from the discharge channel PJB Paiton discharged to the sea has the potential mechanical energy, because the flow rate of 7.6 m3 / s (if both discharge PJB Paiton function) and the discharge channel reaches a height of 4m. This paper will describe the design of hydro power (in the form of a block diagram) by using Kaplan turbine driven by utilizing the wastewater condenser. Kaplan turbine performance represented in the form of the relationship between the incoming water flow and the pitch angle (the angle between the propellers with a hub) to the torque generated. The simulation results indicate that the turbine torque is proportional to the mechanical power turbine. The greater the torque, the greater the mechanical power, and vice versa.
Anti Surge Control of Centrifugal Compressor at PT. Pertamina EP Asset 2 Field Pendopo
Authors: Hakim Muhammad L. , Achmad Balza , Sutikno Juwari P.
Published: June 2018

Gas Compression Package (GCP) is a vital system in the distribution of gas. Pertamina EP, in this regard as a state-owned company managing oil and gas on the upstream, is in the project phase of purchasing and installing compressor facilities. GCPs are used to increase gas pressure hence it can be transferred from gas wells to industrial areas. Dynamic analysis becomes important to observe the performance of the compressor and to ensure safety during operation, in order to avoid surge phenomenon. Surge is an undesirable phenomenon in the form of a backward flow of gas. The surge may damage the internal components of a centrifugal compressor, hence needs to be prevented from happening. The anti-surge controller manipulates anti-surge valve to give actions in the recycle lines when a surge occurred. PID controller is used for controlling and stabilizing the system. PID tuning is determined using Auto Tuning Variation method. This method is based on the process frequency response from relay oscillations. After the dynamic model of the plant had been developed, some simulations were carried out with various scenarios. The scenarios were based on a variety of issues that may occur in a gas compression system. The applied scenarios were a decrease in flow rate on the input side, a pressure drop in gas wells, and changes in gas composition. The control configuration of gas compression system was designed and modified in order to compensate disturbances and avoid surge phenomenon.
Numerical study of the effect of geometry variation on the performance of innovative design wind speed enhancer
Authors: Wibowo Theodorus T. , Daulay Faizal H. , Suryopratomo Kutut , Budiarto Rachmawan
Published: June 2018

Low wind speeds is one of the challenges of wind energy in several countries. The innovative design of wind speed enhancer is one of many solution of those challenges. The wind speed enhancer using the principle of constriction where the speed will be increased at a narrower area. The innovative design wind speed enhancer is unique because of the wind turbines are installed close to the ground surface. The uniqueness can reduce the cost of installation, maintenance, and can reduce the possibility of damage caused by lightning. The proposed of wind speed enhancer design was shown to be successful in increasing the wind speed at venturi that reach 2.26 faster than wind speed at environment for variation of the funnel gap and 2.35 faster than wind speed at environment for variation of the throat diameter. This result is better than existing design. The results of this study is 21.5% better than existing design for variation of funnel gap and 24.2% better than existing design for variation of the throat diameter.
Nuclear Security Training: A New Approach for Educating Nuclear Technology in Indonesia
Authors: Ferdiansjah  , Hario Putro Susetyo , Sihana  , Rosita Widya , Faridah
Published: June 2018

Indonesia has planned to erect Nuclear Power Plant for along time, but the government always postponed the plan due to the presence of anti-nuclear group that decreases the public acceptance. In addition, the public knowledge on nuclear technology is still low, since they only get in the last month before finish their study in high school. The socialization of nuclear technology done by government body could not significantly increase the public acceptance, since the knowledge and confidence on nuclear technology among the government employee is also low. The recent issue regarding to nuclear security give a new opportunity in socializing strategy. Department of Nuclear Engineering and Engineering Physics Universitas Gadjah Mada (UGM) as the only one university in Indonesia offering nuclear engineering education had conducted several nuclear security training for specific people who had been not targeted in previous socialization programs. The training done in collaboration with National Nuclear Energy Regulatory Body (BAPETEN) of Indonesia was conducted in Batam, Surabaya and Jakarta. Almost 20 people coming from police department, national coast guard, custom agency, etc attended in the training. Training materials consist of introduction on nuclear technology, introduction on nuclear security, physical protection system, radiation detection, transport security, etc. Pre-test and post-test were done to know their improvement. This was first time for most of participants to get nuclear technology knowledge. Based on the survey their knowledge was significantly improved. They felt that the training was valuable for them to know the benefit and risk of nuclear technology. We believe that it could increase the public participant and acceptance on utilizing nuclear technology in Indonesia.
Development of Fuel Debris Inspection Methods using Air-Coupled Ultrasound
Authors: Hamdani Ari , Kikura Hiroshige , Kimura Shun , Tsukada Keisuke , Sasa Daisuku , Oomori Shuichi
Published: June 2018

Japan has decided to start fuel debris removal on 2021. Therefore, before starting retrieval of the fuel debris, investigation of location, shape, and also properties of fuel debris have to be performed. In this study, air-coupled ultrasound technique had been developed in order to visualize of fuel debris. Firstly, simulated fuel debris was represented by stone and experiment was done in laboratory scale. Flat and focused air-coupled ultrasound were used as a sensor to get echo signals of the target surface. Results showed that both flat and focused sensor successfully reconstructed the flat surface image in good spatial resolution. However, flat air-coupled transducer shown unstructured. On the other hand, focused air-coupled ultrasound shown good performance when target surface was unstructured. Therefore, it was recommended to used focused sensor when target surface was unstructured like simulated fuel debris.
Adsorption of CO2 and Methane on Covalent Organic Polymer
Authors: Lee Siew-Pei , Mellon N. , Shariff Azmi M. , Leveque Jean-Marc
Published: June 2018

Development of covalent organic polymer (COP) is a potential new class of adsorbent for CO2 separation from natural gas mainly due to their good hydrothermal stability, chemical tuning flexibility and low cost. CO2 and methane adsorption on COP-1 was studied under atmospheric condition (101.3 kPa, 298 K). COP-1 was synthesized via catalyst-free polycondensation of cyanuric chloride and piperazine. The properties of COP-1 were characterized using several analytical methods such as Fourier Transform Infra-Red (FTIR), N2 adsorption and desorption measurement and Field Transmission Electron Microscopy in coupled of Energy Dispersive X-ray Spectroscopy (FESEM-EDS). Reversible CO2 adsorption isotherm on COP-1 reflects low heat of adsorption which is beneficial to energy minimization in adsorbent regeneration process. Furthermore, moderate specific surface area COP-1 (88.5 m2/g) shows about nine times CO2 uptake higher than methane. The highly selective adsorption performance provides a promising insight in application of COP adsorbent for CO2 removal in natural gas field.
Analog tachometer as an indicator motorcycle machine wearing based on moving coil
Authors: Woro Fittrin Selo Nur Giyatno Dhanis , Richard Orlando Tommy , Supriatin Nining
Published: June 2018

As an increasing highly mobility and high traffic, the necessary of motorcycle is highly increasing. The condition makes user ride motorcycle with highly speed in highly frequency. Then, these conditions make motorcycle machine reliability is highly decreasing. Finally, it made machine is run to damage and maintenance cost to be high. Analog tachometer is an electronic instrumentation that proposed to solve these problems. Actually, instrumentation system of tachometer is an electromechanical system. A wire in a control unit is embedded into shaft of crank. Then, magnet in control unit will convert rotary machine energy into electrical energy with d’Arsonval meter. Current sensor and small variable resistor are the kind of sensor that are used in tachometer. Small variable resistor is used for tuning and recalibration. Utilization small variable resistor in tachometer circuit is make calibration and recalibration current sensing of electrical current that rectified by diode. Tachometer for counting rotation per minute (RPM) motorcycle machine is built up. The tachometer has capability to count RPM motorcycle machine 1,000 – 13.000 RPM. The range is reliable as an indicator for user to minimize motorcycle machine wearing.
Characterization of Natural Zeolite and Chicken Manure Derived Biochar for Carbon Dioxide Adsorption in Biogas
Authors: Arnita Wuri Margaretha , Pertiwiningrum Ambar , Budiarto Rachmawan , Agus Dwi Koranto Cahyono
Published: June 2018

Although biogas is clean and environmentally friendly, its existence is often unsustainable, especially in rural area. Consumption of fossil fuel energy still dominates because cheaper, higher in energy efficiency and ready to use than biogas. One of the efforts to make biogas can compete with fossil fuel energy is by increasing calorific value. Reduction of carbon dioxide by adsorption enhances the calorific value that evidenced by methane enrichment. In this study, we investigated the effect three types of combined adsorbent: pure natural zeolite (Z-Z), zeolite-biochar from chicken manure (Z-B1) and zeolite-modified biochar (Z-B2) on methane content. The result showed that adsorption of biogas using Z-Z, Z-B1 and Z-B2 increased methane level with enhancement of 1,36; 28,92; and 11,27% respectively compared before adsorption. To confirm whether these results were influenced by adsorbent’s character or not as consequence adsorbent characterization have been done in this study.
Response to Pontoon and Pendulum Motion at Wave Energy Converter Based on Pendulum System
Authors: Arief I.S. , Utama I.K. A. P. , Hantoro R. , Prananda J. , Safitri Y. , Rachmattra T.A. , Rindu F. K.
Published: June 2018

Energy conversion technology derived from ocean wave energy has been developed, one of them is the Power Wave sea-Pendulum System (PLTGL-SB). PLTGL composed of a pontoon which is subjected to the excitation force of ocean waves and will move the pendulum on the top of the pontoon. This study aims to analyze the best shape for PLTGL- SB’s pontoon and determine the largest deviation generated due to the movement of the pendulum vertical pontoon. Pontoon shapes studied are pontoon consisting of a large cylinder in the middle and there are two boats on the right and left, like a trimaran ship. Variations were made in this study consisted of variations of length and height boats, the draft height, wave period, the mass and the length of the pendulum arm. Best pontoon shape is determined by simulating the shape of a pontoon with Computational Fluid Dynamic (CFD). Pendulum deviation obtained by mathematical modeling pontoon two degrees of freedom (roll) and pendulum. Based on the chart Response Amplitude Operator (RAO) pontoon shape is best for PLTGL-SB is a pontoon with a 2/3 full large cylinder diameter, 1.5 cm height boats, catamarans length of 41.5 cm. Based on the results of a mathematical model of the largest deviation of the pendulum is generated when the pontoon is placed in the period of 0.8 s, with a mass and pendulum arm lengths are 19.9 g and 10.6 cm.
Synthesis of Fatty Acid Methyl Ester from Soybean Oil Using Electrolysis Enhanced by Treated Kaolinite as Catalyst
Authors: Syah Putra Rudy , Sriyono Wahyu , Ayu Mutiara , Intan Kusumawati Reina
Published: June 2018

The performance of treated kaolinite obtained from three types treatment that was calcination at 600 °C (K600), 800 °C (K800) and acid treated of K800 (KA800). All catalysts were tested for their catalytic activity via electrolysis process through (trans)esterification of soy bean oil at room temperature. X-ray diffraction (XRD) and Fourier transform infrared (FTIR) was performed to characterize the microstructures and chemical properties of as-prepared treated kaolinite material. The effect of catalyst amount (2, 3 and 5 wt.%) was evaluated for the conversion of FAME from soybean oil and followed by GC-MS, determining of the purity of FAME at different operation variables. The result showed that for KA800 as catalyst, the FAME conversion was the highest as well as 18,85% at 3 wt.% catalyst of catalyst loading in the mixture, respectively.
The effect of inlet curvature and flange on wind turbine diffuser performance
Authors: Nasir Muhammad , Bayu Dwianditya Ignasius , Suryopratomo Kutut , Sihana
Published: June 2018

The modification is required to the conventional wind turbine in order to increase the power produced by the wind turbine located in the low wind velocity area. Attaching a diffuser to the conventional wind turbine is one of the ways to increase the wind velocity of the approaching wind thus increasing the extracted power. This research discussed the influence of geometry variation of diffuser augmented wind turbine equipped with inlet curvature and flanged. The analyzed geometry parameters were the length (L). the expansion angle (θ). the angle of inlet curvature (β). the radius of inlet curvature (R). and the flange height (h). In this study, experimental investigations were carried out to measure wind velocity ratio U/U∞ (wind velocity on the central axis/free stream wind velocity) of various diffuser geometry designs with an installed rotor/wind turbine in it. The present diffuser augmented wind turbine provided higher wind velocity at the inlet section reaching the maximum velocity ratio Umax/U∞ of 2.01 compared to a bare wind turbine.
The wireless energy transfer (WET) using ultra high frequency (UHF) for human body implant recharging
Authors: Rinanda Saputri Fahmy , Sunarno  , Motivanisman Waruwu Memory , Wijaya Rony
Published: June 2018

The wireless energy transfer (wet) is widely used in many fields. In particularly for medical, this technique can be implemented to an electronic human body implant recharging. The possible size and shape of the receiver antenna in the experiment before still become a problem. Using Yagi-Uda model antenna for the transmitter unit in ultra-high frequency (UHF) band, this paper refers to design a receiver antenna for implemented as a human implant recharging. The receiver antenna has successfully designed in minimal with its size and shape of the designed antenna is about 1.44 cm3.
Primordial Nucleosynthesis: Constraints on the Birth of the Universe
Authors: Mathews Grant , Kusakabe Motohiko , Gangopadhyay Mayukh , Kajino Toshitaka , Sasankan Nishanth
Published: June 2018

We review the basic elements of big bang nucleosythesis (BBN) and how a comparison of predicted light-element abundances with observations constrains physics of the radiation-dominated epoch. We then summarize some applications of BBN and the cosmic microwave background (CMB) to constrain the first moments of the birth of the universe. In particular, we discuss how the existence of higher dimensions impacts the cosmic expansion through the projection of curvature from the higher dimension in the "dark radiation" term. We summarize current constraints from BBN and the CMB on this brane-world dark radiation term. At the same time, the existence of extra dimensions during the earlier inflation impacts the tensor to scalar ratio and the running spectral index as measured in the CMB. We summarize how the constraints on inflation shift when embedded in higher dimensions. Finally, one expects that the universe was born out of a complicated multiverse landscape near the Planck time. In these moments the energy scale of superstrings was obtainable during the early moments of chaotic inflation. We summarize the quest for cosmological evidence of the birth of space-time out of the string theory landscape. We will explore the possibility that a superstring excitations may have made itself known via a coupling to the field of inflation. This may have left an imprint of "dips" in the power spectrum of temperature fluctuations in the cosmic microwave background. The identification of this particle as a superstring is possible because there may be evidence for different oscillator states of the same superstring that appear on different scales on the sky. It will be shown that from this imprint one can deduce the mass, number of oscillations, and coupling constant for the superstring. Although the evidence is marginal, this may constitute the first observation of a superstring in Nature.
Development of the ELISSA array: prototype testing at Laboratori Nazionali del Sud
Authors: Guardo G. L. , Anzalone A. , Balabanski D. , Chesnevskaya S. , Crucillá W. , Filipescu D. , Gulino M. , La Cognata M. , Lattuada D. , Matei C. , Pizzone R. G. , Rapisarda G. G. , Romano S. , Spitaleri C. , Taffara A. , Tumino A. , Xu Y.
Published: June 2018

The Extreme Light Infrastructure-Nuclear Physics (ELI-NP) facility, underconstruction in Magurele near Bucharest in Romania, will provide high-intensity andhigh-resolution gamma ray beams that can be used to address hotly debated problems in nuclear astrophysics, such as the accurate measurements of the cross sections of the24Mg(γ,α)20Ne reaction

For this purpose, a silicon strip detector array (named ELISSA) will be realized in acommon effort by ELI-NP and Laboratori Nazionali del Sud (INFN-LNS), in order to measure excitation functions and angular distributions over a wide energy and angular range. A prototype of ELISSA was built and tested at INFN-LNS in Catania (Italy) with the support of ELI-NP. In this occasion, we have carried out experiments with alpha sources and with a 11 MeV 7Li beam that show up a very good energy resolution (better than 1%) and very good position resolution, of the order of 1 mm. Moreover, a threshold of 150 keV can be easily achieved with no cooling.
Study of the contribution of the 7Be(d, p) reaction to the 7Li problem in the Big-Bang Nucleosynthesis
Authors: Inoue A. , Tamii A. , Abe K. , Adachi S. , Aoi N. , Asai M. , Fukuda M. , Gey G. , Hashimoto T. , Ideguchi E. , Isaak J. , Kobayashi N. , Maeda Y. , Makii H. , Matsuta K. , Mihara M. , Miura M. , Shima T. , Shimizu H. , Tang R. , Dinh Trong T. , Yamaguchi H. , Yang L.
Published: June 2018

Our research goal is to measure the 7Be(d, p) reaction to shed light on the 7Li problem in the Big-Bang Nucleosynthesis. We are developing an unstable 7Be target for a high-resolution measurement of the 7Be(d, p)8Be reaction. We plan to compare two methods to producethe 7Be target: (1) Activation method, and (2) Implantation method. We performed an activation methodexperiment at the Van de Graaff at Osaka University, and obtained the cross-section data. A second experiment to obtain more accurate data will take place at the Tandem Electrostatic Accelerator, Kobe University. We have also made a 7Be target with implantation method at CRIB, Center for Nuclear Study, Univer-sity of Tokyo. An experiment to measure the (d, p) reaction with the implanted target is scheduled for 2018 at Japan Atomic Energy Agency, tandem facility.
Resonance Effects in Carbon Burning Process on Type Ia Supernovae
Authors: Mori Kanji , Famiano Michael , Kajino Toshitaka
Published: June 2018

The 12C+12C reaction plays an important role in type Ia supernovae. However, its cross section with astrophysical low energy has not been measured. If there is an unknown resonance in the low energy region, the reaction rate is enhanced and can affect astrophysics. We impose an upper limit to the resonance strength using the Wigner limit and find that the reaction rate can be larger than a standard rate by ~ 103 times in astrophysical temperature. We apply this enhanced reaction rate to binary mergers of two white dwarfs (WDs). We find that the fate of WD-WD mergers changes due to the resonance. The accretion induced collapse to neutron stars becomes more likely to occur, while it becomes more diffcult to explain SNe Ia from WD-WD mergers.
Potential sources of uncertainties in nuclear reaction modeling
Authors: Hilaire Stephane , Bauge Eric , Huu-Tai Pierre Chau , Dupuis Marc , Péru Sophie , Roig Olivier , Romain Pascal , Goriely Stephane
Published: June 2018

Nowadays, reliance on nuclear models to interpolate or extrapolate between experimental data points is very common, for nuclear data evaluation. It is also well known that the knowledge of nuclear reaction mechanisms is at best approximate, and that their modeling relies on many parameters which do not have a precise physical meaning outside of their specific implementations in nuclear model codes: they carry both specific physical information, and effective information that is related to the deficiencies of the model itself. Therefore, to improve the uncertainties associated with evaluated nuclear data, the models themselves must be refined so that their parameters can be rigorously derived from theory. Examples of such a process will be given for a wide sample of models like: detailed theory of compound nucleus decay through multiple nucleon or gamma emission, or refinements to the width fluctuation factor of the Hauser-Feshbach model. All these examples will illustrate the reduction in the effective components of nuclear model parameters, through the reduced dynamics of parameter adjustment needed to account for experimental data. The significant progress, recently achieved for the non-fission channels, also highlights the difficult path ahead to improve our quantitative understanding of fission in a similar way: by relying on microscopic theory.
Two Water Stable Copper Metal-Organic Frameworks with Performance in the Electrocatalytic Activity for Water Oxidation
Authors: Liu Xiuping , Wang Yijun , Liu Wenwen , Zhao Lianming , Guo Wenyue
Published: June 2018

Two novel water stable metal-organic frameworks, [Cu(L)·(4,4′-bipy)·(ClO4)]n (1), [Cu(L)·(phen)·(ClO4)·(H2O)]2 (2), have been constructed by HL=[5-Mercapto-1-methyl] tetrazole acetic acid and Cu (II) salt in the presence of assistant N-containing ligands. MOF 1 and MOF 2 with open CuII sites, resulting the framework 1 and 2 show electrocatalytic activity for water oxidation in alkaline solution. The electrochemical properties of complex for oxygen evolution reaction (OER) were evaluated by linear sweep voltammetry (LSV) and the Tafel slopes. Complex 1 has a higher LSV activity with a lower over potential of 1.54 V and a much higher increase in current density. Meanwhile, the Tafel slope of complex 1 (122.0 mV dec-1) is much lower than complex 2 (243.5 mV dec-1). This phenomenon makes complex 1 a promising porous material for electrocatalytic activity.
Properties and Preparation of High Entropy Alloys
Authors: Yin Xiang , Xu Shuqiong
Published: June 2018

As a consequence of multi-components, the high entropy alloys embodied serious cocktail party effect and lattice distortion. So high entropy alloys have high strength and hardness possess many comprehensive properties such as thermostability and corrosion resistance. Because of excellent mechanical properties and chemical properties, high entropy alloys have immeasurable potential of development. This paper mainly introduces the properties, preparations and applications of high entropy alloys, and finally summarizes them.
Effects of Ar and He on Microstructures and Properties of Laser Welded 800MPa TRIP Steel
Authors: Wang Wen-Quan , Dong Shu-Cheng , Jiang Fan , Cao Ming
Published: June 2018

Fiber laser welding of cold rolled TRIP steel (transformation Induced Plasticity steel) sheet with tensile strength of 820MPa and thickness of 1.4mm was carried out using shielding gases Ar and He, respectively. For the same laser power and welding speed, the effects of different shielding gases on penetration and bead section morphologies were investigated. The microstructures and properties of the TRIP steel joints were also studied. The investigation showed that higher penetration and lower porosity could be obtained under shielding gas He using the same laser power and welding speed. The microstructures of the TRIP joint mainly included martensite and retained austenite. But the joint microhardness and tensile strength were higher under the shielding gas He. The tensile strength of the welded joint perpendicular to the weld line was equal to that of the base metal. But the tensile strength of the joint parallel with the weld line was higher than that of the base metal. The plasticity and formability of the welded joint were impaired due to the formation of martensite in the weld metal.
Luminescence Properties of SiO2@Eu(phen-Si) (sulphoxide) Core-Shell Nanometer Composite
Authors: Li Yi-Lian , Li Wen-Xian , Zheng Yu-Shan
Published: June 2018

A novel ternary europium complex Eu(Phen-Si)·(H2L)2·(ClO4)3·6H2O was prepared using (phen)-N-(CONH(CH2)3Si(OCH2CH3)3)2 (Phen-Si) as the first ligand and 2-carboxyphenyl carboxymethyl sulphoxide (H2L) as the second ligand. The corresponding different thickness core-shell structure SiO2@Eu(phen-Si)·L nano composites were synthesized, with silica spheres as core, ternary europium complex (Eu(Phen-Si)·(H2L)2·(ClO4)3) as shell. The ternary europium complex has been characterized by element analysis, molar conductivity, and IR spectra. The SiO2@Eu(phen-Si)·L core-shell structure composite was characterized by TEM and IR spectra. Core-shell structure composites exhibited stronger fluorescence properties than that of the ternary europium complex. The emission intensity of the two core-shell composites was 1.79, 3.99 times stronger than the ternary europium complex, respectively. The fluorescence lifetime of the core-shell structure composites were longer than the ternary europium complex.