bluuebunny/crossref_metadata_2025_split huggingface dataset:
Homologous post-treatment strategy enabling phase-pure α-FAPbI3 films
Authors: Ye Yaqi , Xiao Lingbo , Li Lutao , Xu Xiaoli , Zhao Jie , Wang Chen , Lu Zheng , Jiang Wen , Li Jiating , Sun Yinghui , Zou Guifu 
Published: June 2023

Abstract
Formamidinium lead triiodide (FAPbI3) is considered as the prospective light-absorbing layer on account of the close-to-ideal bandgap of the α-phase, wide optical absorption spectrum and good thermal stability. Therefore, how to realize δ to α-phase transition to obtain phase-pure α-FAPbI3 without additives is important for FAPbI3 perovskite films. Herein, a homologous post-treatment strategy (HPTS) without additives is proposed to prepare FAPbI3 films with pure α-phase. The strategy is processed along with dissolution and reconstruction process during the annealing. The FAPbI3 film has tensile strain with the substrate, and the lattice keeps tensile, and the film maintains in an α/δ hybrid phase. The HPTS process releases the tensile strain between the lattice and the substrate. The process of strain release realizes the phase transition from δ to α-phase during this process. This strategy can accelerate the transformation from hexagonal δ-FAPbI3 to cubic α-FAPbI3 at 120 °C. As a result, the acquired α-FAPbI3 films exhibit better film quality in optical and electrical properties, accordingly achieving device efficiency of 19.34% and enhanced stability. This work explores an effective approach to obtain additive-free and phase-pure α-FAPbI3 films through a HPTS to fabricate uniform high-performance α-FAPbI3 perovskite solar cells.
Cross-machine comparison of runaway electron generation during tokamak start-up for extrapolation to ITER
Authors: de Vries P.C. , Lee Y. , Gribov Y. , Mineev A.B. , Na Y.S. , Granetz R. , Stein-Lubrano B. , Reux C. , Moreau Ph. , Kiptily V. , Esposito B. , Battaglia D.J. , Martin-Solis J.R. 
Published: June 2023

AbstractA cross-machine comparison of global parameters that determine the runaway electron (RE) generation and loss process during tokamak start-up was carried out with the aim to extrapolate these to ITER. The study found that all considered discharges, also those that do not show signs of RE, are non-thermal at the start, i.e. have a streaming parameter larger than 0.1. During the current ramp-up the electric field,E, remains above the critical value,Ec, that allows RE in the plasma. The distinction to be made is not if RE can form but, if sufficient RE can form fast enough such that they are detected or start to dominate the dynamics of the tokamak discharge. The dynamics of the value ofE, density and temperature during tokamak are key to the formation of RE. It was found that larger devices operate withEcloser toEc, due to their higher temperatures, hence the RE generation is relatively slower. The slower time scales for the formation of RE, estimated to be of the order of 100s of ms in ITER simplifies the development of avoidance schemes. The RE confinement time is also an important determinant of the entire process and is found to increase with the device size. The study also revealed that drift orbit losses, a mechanism often attributed as the main RE loss mechanism during the early tokamak discharge, are actually more difficult to achieve. RE losses might be more likely attributed to RE diffusion due to magnetic turbulence.
Analysis of Fin Stabilizer Base on NACA 0010 in Fast Patrol Boat to Reduce Appendage Resistance on Numerical Method
Authors: Kusuma Cahya 
Published: June 2023

Abstract
The main function of the fin stabilizer on patrol boats is anti-rolling and providing comfort for ship personnel. However, the installation of the fin stabilizer has a consequence in the form of appendage resistance of the ship. This study analyzes the magnitude of the appendage resistance due to the installation of the NACA 0010 stabilizer fin mounted on a 60m patrol boat at an angle of 0º. Reduction of ship resistance is expected to improve the ship performance which then can optimize the use of fuels and minimize pollution. In the early stages, the bare hull was validated with the results of the model test on the towing tank with a resistance difference of less than 3%. Based on the simulation results, it is known that the average resistance value of Fine Marine Numeca is 1.87% higher than the resistance value of the Maxsurf software. From the results of testing the appendage resistance value with 3 variations of the shape of the NACA 0010 fin, it is known that the appendage resistance value of fin stabilizer 2 is 1.04%, fin stabilizer 1 is 1.26% while fin stabilizer 3 is 1.6%. The appendage resistance of fin stabilizer 2 is smaller than the variation of fin stabilizer 1 and 3 models.
Analysis of technology readiness level of dual fuel harbor tug boat research achievement
Authors: Ismoyo K , Muhajirin  , Iskendar  , Ajidarmo K , Triyanto  , Muis A 
Published: June 2023

Abstract
Research and innovation of dual fuel harbor tug boat are carried out to meet eco-friendly vessel. The measure of technological readiness is an indicator of the utilization of the study outcomes that have been carried out. One approach that can be used is by mapping technology readiness, assessing the application of research and its implementation activities, lowering the risk of technology failure, and boosting the usage of research and development outcomes. In this paper, an analysis of technological readiness is carried out on the research results of a dual fuel tug boat using a scoring system called techno-meter. The results obtained are that the assessment of the research achievement of the dual fuel tug boat shows the level of technology readiness (TRL) at the 4th level. This shows that the resulting technological research has been validated through testing the scale of the hydrodynamic model which shows the feasibility of the design and maneuverability of the ship in the relevant environment with an achievement score is 80.66%
Technical and Economical Feasibility Impact on Landing Craft Ship Conversion to Comply with Greenship Requirements
Authors: Putra Andreas Mahendri , Artana Ketut Buda , Made Ariana I , Abdillah Hayy Nur 
Published: June 2023

Abstract
This research aims are additional requirements to comply with greenship requirements, analysing technical and economic due to LNG dual fuel conversion. As the technical aspect of using LNG as fuel, this LNG LCT ISO Tank carrier able to utilize LNG as fuel which it will be installed dual fuel genset from MAN B&W 6L23/30DF for sailing and manoeuvring scenario and VOLVO D16 MG HE KC for additional genset that will be operated for cargo handling and at port scenario. While it needs small power requirements, therefore diesel electric propulsion chosen to propel the ship which is need 401 kW for each shaft. For economic aspect the conversion into LNG as fuel has economically valuable which payback period at year eight, ROI at 12,68% and IRR 15%.
Analysis of silica gel desiccant application in fuel storage tanks model to reduce palm oil-based biodiesel degradation
Authors: Azhad M F R , Fathallah A Z M , Alami N H 
Published: June 2023

Abstract
Biodiesel fuel is subject to degradation as a result of its prolonged storage period. The degradation of biodiesel fuel can have a negative impact on its qualities as well as the performance of the engine. These four stages of degradation are hydrolysis, oxidation, thermal decomposition, and bacterial contamination. A consequence of the hygroscopic qualities of biodiesel is the possibility of hydrolysis processes, which might result in the creation of free fatty acids, which can lead to engine corrosion. The presence of water encourages bacterial development in biodiesel, which might result in the formation of deposits. This study aims to investigate the application of silica gel desiccant in fuel tanks with varying biodiesel concentrations. The total acid number is used as the degradation rate parameter, while the number of bacterial colonies is used as the bacterial growth rate parameter. The research was carried out through experiments using tank models over a period of six weeks, with six tank conditioning. With the experiment results, reducing humidity in the fuel tank by applying desiccant can lead to the reduction of biodiesel degradation rate and micro-bacteria growth.
Fatigue Life Analysis on The Local Construction Near the Chain Stopper Area of Papa Terminal Floating Storage Offloading (FSO) With 4X2 Chain Line Spread Mooring Configuration
Authors: Louis A , Murdjito  , Syahroni N 
Published: June 2023

Abstract
This research aims to determine the fatigue life of the structure near the chain stopper of a storage tanker using the spectral fatigue analysis method. The wave spectrum is developed based on six significant wave height and period variations from the site wave scatter data using a modified spectrum of JONSWAP. The stress analysis is carried out using finite element analysis software. It can then be processed into Stress RAO from each loading direction. The response spectra are generated from the wave spectrum, multiplying with the square of the Stress RAO. These response spectra will determine the stochastic values of each stress range variation in obtaining the number of cycles that occur in each variation (nL). The accumulation of each ratio obtained from all existing variations will produce a fatigue index value (D). The American Bureau of Shipping’s S-N curve D-Class is used in this fatigue life analysis. The Gamkonora Aframax tanker operated as a temporary storage tanker at Papa’s field area is used as the case of this study.
Validation of multiphase water wave propagation using smoothed particle hydrodynamics
Authors: Salvikran M A , Trimulyono A , Hadi E S 
Published: June 2023

Abstract
Water wave propagation is one of the classical problems in free surface flow that involved water and air. There are a lot of studies have been conducted on both experimental and numerical methods. One numerical method is computational fluid dynamics (CFD), which is divided into two major i.e. CFD mesh-based and meshfree. In this paper, smoothed particle hydrodynamics (SPH) is used to carry out a study of water wave propagation. SPH is a mesh-free CFD and Lagrangian approach that is suitable for free surface flow such as water waves. Two-phase SPH was used to reproduce long-distance propagation using a piston-type wavemaker. The wave probe was set 24.6 m in front of the wavemaker with a water depth is 0.75 m. The wave period is 1.15 s with an amplitude of the wavemaker is 33.0 mm. The simulation is carried out with a water and air phase (multiphase). The results indicate SPH is in reasonable agreement with experimental for the wave height, celerity, and amplitude.
Mooring Analysis of Ocean FarmITS (OFITS)
Authors: Mulyadi Y , Purnawanti Y N , Huda N , Syahroni N , Wahyudi  , Sambodho K , Sulaksono A P 
Published: June 2023

Abstract
Ocean Farm ITS (OFITS) is a pilot project of offshore aquaculture designed by Institut Teknologi Sepuluh Nopember (ITS) which will be installed at Sidoasri Beach, Malang Districts. OFITS structure is an integration of fish cages with ecotourism facilities. This paper describes the mooring analysis for OFITS installation. The mooring configuration uses a rectangle grid consisting of 4 mooring buoys, 8 top inner mooring grids, and 14 mooring lines arranged symmetrically. The mooring line uses a type of nylon line with a size of 42 mm in diameter and 70 m in length. Five mooring lines on the front side and two mooring lines on the back side secure the moored buoy to the seafloor. The maximum capacity of buoy is 3 tons. The anchor for mooring uses an anchor with a weight of 0.25 tons for each anchor. The purpose of this analysis is to obtain the maximum tension of the mooring rope at OFITS based on extreme environmental loads. This analysis uses the time domain analysis method.
Hot Spot Stress Analysis of a Two-Planar DTY Tubular Joint Subjected to Axial Loading
Authors: Prastianto R W , Adha I A , Hadiwidodo Y S , Rosyid D M , Mulyadi Y 
Published: June 2023

Abstract
Air Cooler Support Frame (ACSF) is one of the supporting structures in oil and gas field that consist of tubular and beam members. Currently, the existing common ACSF has a conventional design and could be overdesign. Therefore, the ACSF structure must be designed by considering local stress characteristics to obtain sustainable innovative design. Significant structural failure usually occurs in tubular joints because of the hot spot stress in the joint area. In this study, the ACSF structure was globally analysed to determine the critical joint which was a two-planar DTY joint, then it was locally modelled by using finite element method-based of ANSYS software for local stress analysis. The tubular joint has been modelled using solid elements including weld model and by creating fine meshing in the vicinity of the brace-chord intersection area for all braces. The axial loading is applied to investigate the local stress distribution along the brace-chord intersection line of the tubular joint for each brace. The result show that the hot spot stress of about 145 MPa for the DTY joint occurred in Brace 1 around the saddle area on the chord side under the axial tension loading.
Strength analysis of air cooler support frame (ACSF) platform due to corrosion
Authors: Rosyid D M , Prastianto R W , Wahda E L , Murdjito  , Sambodho K , Syarifudin M R 
Published: June 2023

Abstract
Design of an Air Cooler Support Frame (ACSF) platform installed at waters area must be sustainable and capable to withstand the environmental loads. In the estuary, corrosion due to seawater accumulates around the platform legs leads to reduce the strength of the structure. Therefore, this study was conducted to predict the platform’s strength under critical corrosion conditions during its working life. The analysis was carried out using the Finite Element Method. In the global analysis, the operating and environmental loads were applied. Then, various patterns in term of length and intensity of corrosion were adjusted to the corrosion zone’s elevation based on calculations from inspection data to determine the pattern that has the most significant effect to the platform’s strength. The most critical pattern of the corrosion was used in the model for local stress analysis. The results indicated that the appropriate corrosion model was applied to the ACSF Platform has a corrosion length pattern of about half of the leg length with an intensity of 40%. Also, the strength of the ACSF platform decreases after corrosion occurs. The stress in the corroded leg has exceeded the material allowable stress but still undergoes acceptable deformation.
A study into the effect of tip clearance on the performance of b-series and kaplan-series ducted propellers
Authors: Adietya B A , Aryawan W D , Utama I K A P 
Published: June 2023

Abstract
A study into the effect of tip clearance on ducted propellers was carried out. Two series of propellers, namely B-series and Kaplan-series, were used. The gap between tip of propeller and ducted was varied from 2mm to 5mm. The study was conducted numerically using computational fluid dynamics (CFD) approach. The solver is based on the Reynolds-Averaged Navier-Stokes (RANS) solutions and two turbulence modelling, i.e. k-ω SST by Menter and explicit algebraic stress model (EASM), were applied in order to find out the optimum results. This paper objective to discuss energy efficiency on ships by investigating variations of propeller tip clearances. Overall results showed that EASM demonstrated better score (particularly in term of thrust and efficiency) than the k-ω SST. The highest thrust, torque and efficiency were achieved at 3mm tip clearance for both series. Moreover, Kaplan-series showed better results than the B-series propeller indicating that the use of ducted propeller using Kaplan-series is more appropriate.
Session Assessment of Seaplane Operations: The Case of Marine Tourism Development on Gili Iyang Island, Indonesia
Authors: Shabrina N , Arianto D , Wardani K S , Qonita Z , Ispandiari A R , Hariyanto  , Gutami N I , Manti M F 
Published: June 2023

Abstract
The development of marine tourism in Indonesia aims to promote economic growth, enhance the well-being of the citizenry, and conserve the environment. Gili Iyang Island in East Java Province has the second highest oxygen concentration in the world and is a popular health tourism destination. The transportation industry plays a crucial role in facilitating access and connectivity between islands and other regions. Seaplanes are an alternative mode of transportation for reaching tourist destinations on small islands with limited land area that are surrounded by water. This study aims to determine the optimal conditions for reaching the island and the number of effective days for seaplane operations. In assessing seaplane operating factors, water conditions such as current speed (1), wind speed (2), waves height (3), and tides (4) have a significant impact. Therefore, seaplanes cannot effectively operate for an entire year. Using a comparative methodology, the characteristics of the seaplane mode of transportation in the waters of Gili Iyang will be examined to determine the optimal operational time. The results of the study indicate that the 19-seat seaplane can operate 258 days per year and recommend the use of air-sea transportation modes for the growth of tourism in Gili Iyang Island.
Predictors of sentinel lymph node metastasis in very thin invasive melanomas
Authors: Kakish Hanna , Sun James , Zheng David X , Ahmed Fasih Ali , Elshami Mohamedraed , Loftus Alexander W , Ocuin Lee M , Ammori John B , Hoehn Richard S , Bordeaux Jeremy S , Rothermel Luke D 
Published: June 2023

Abstract

Background
Melanomas &lt; 0.8 mm in Breslow depth have less than a 5% risk for nodal positivity. Nonetheless, nodal positivity is prognostic for this group. Early identification of nodal positivity may improve the outcomes for these patients.

Objectives
To determine the degree to which ulceration and other high-risk features predict sentinel lymph node (SLN) positivity for very thin melanomas.

Methods
The National Cancer Database was reviewed from 2012 to 2018 for patients with melanoma with Breslow thickness &lt; 0.8 mm. Data were analysed from 7 July 2022 through to 25 February 2023. Patients were excluded if data regarding their ulceration status or SLN biopsy (SLNB) performance were unknown. We analysed patient, tumour and health system factors for their effect on SLN positivity. Data were analysed using χ2 tests and logistic regressions. Overall survival (OS) was compared by Kaplan–Meier analyses.

Results
Positive nodal metastases were seen in 876 (5.0%) patients who underwent SLNB (17 692). Factors significantly associated with nodal positivity on multivariable analysis include lymphovascular invasion [odds ratio (OR) 4.5, P &lt; 0.001], ulceration (OR 2.6, P &lt; 0.001), mitoses (OR 2.1, P &lt; 0.001) and nodular subtype (OR 2.1, P &lt; 0.001). Five-year OS was 75% and 92% for patients with positive and negative SLN, respectively.

Conclusions
Nodal positivity has prognostic significance for very thin melanomas. In our cohort, the rate of nodal positivity was 5% overall in these patients who underwent SLNB. Specific tumour factors (e.g. lymphovascular invasion, ulceration, mitoses, nodular subtype) were associated with higher rates of SLN metastases and should be used to guide clinicians in choosing which patients will benefit from SLNB.
Patient-Derived 3D Models for Preclinical Drug Response Evaluation in Neuroblastoma
Authors: Gros S J , Huo Z , Bilang R , Supuran C , von der Weid N , Holland-Cunz S , Martin I , Muraro M 
Published: June 2023

Abstract

Background
Neuroblastoma is the most common solid childhood tumor outside the central nervous system. Metastatic and relapsed disease in neuroblastoma patients still has a poor prognosis. New treatment methods to improve therapy and outcomes for patients with advanced neuroblastoma are urgently needed. However, clinical trials currently only allow for testing few substances in even fewer patients. This increases the need to improve and advance preclinical tumor models to preselect favorable candidates for novel therapeutics.

Aims
This study investigates the advantages and limitations of using bioreactor-based perfused 3D models in for preclinical drug testing in solid tumors exemplified in neuroblastoma.

Methods
We established perfused bioreactor-based 3D models using neuroblastoma cell lines and tissue slice-culture and evaluated cell viability. Several inhibitors against hypoxia-related factors, associated with tumor progression, were tested including Aqb011 against aquaporin 1 (AQP1) and SLC-0111 against carbonic-anhydrase IX (CAIX). Isothermal microcalorimetry was used for measuring real time thermogenesis in 3D cell and tissue constructs.

Results
3D neuroblastoma cell constructs presented with similar morphological features compared to neuroblastoma cells in intact tumor tissue featuring small, round and blue cells. Perfused neuroblastoma slice-culture maintained its primary structure in the bioreactor for up to 10 days. Both 3D neuroblastoma cell constructs and neuroblastoma tissue responded to inhibition with significant decrease of thermogenesis measured by microcalorimetry, if the correlating hypoxic factor (AQP1 or CAXI) was expressed. The AQP1 inhibitor Aqb011 and the CAIX inhibitor SLC-0111 decrease heat production of 3D neuroblastoma cultures.

Conclusions
We newly establish two preclinical models for neuroblastoma cells and tissue in a 3D structure. Drug response monitoring can be applied in these models using isothermal microcalorimetry. Monitoring times can be increased by use of the perfused bioreactor. Our models are an important first step to preclinically evaluate new drugs using patient-derived tumor tissue exemplified for neuroblastoma.
Sniffing Out Pseudomonas Aeruginosa Wound Infections with Vitamin B12: A Simple and Selective Colorimetric Biosensor for Early Diagnosis
Authors: Li Z , Ren Q , Shishaeva L 
Published: June 2023

Abstract

Background
The vacuum-assisted closure (VAC) system is a useful tool to promote wound healing. However, due to its occlusive system, the wound is often prone to Pseudomonas aeruginosa (PA) infections. Early detection and initiation of treatment is essential to limit the damage (e.g., saving a skin graft), but the black sponge occludes the wound and prevents its visual assessment leading to delayed diagnosis. Fortunately, each bacterium emits a spectrum of specific volatile organic compounds that can be used for detection. For PA, the signature compound is hydrogen cyanide.

Aims
We aimed to develop a colorimetric biosensor for “naked-eye” detection of PA that takes advantage of the negative pressure created by the VAC to collect hydrogen cyanide.

Methods
We used aquocyanocobinamide, a derivative of vitamin B12, as a colorimetric chemosensor of biological cyanide. By binding cyanide, the color of the sensor changes from orange to violet, which can be quantified with UV-VIS spectroscopy. The sensor was delivered onto the carrier material polyvinyl acetate. Its sensitivity was assessed using laboratory strains and clinical isolates of PA in-vitro and on an ex vivo skin model.

Results
UV-VIS spectroscopy readings of the sensor were calibrated for the cyanide concentration 0-250ppm. Cyanide produced by 30 laboratory and 20 clinical PA isolates were quantified based on the colorimetric changes of the sensor. While the sensor detected all PA strains, it did not falsely react to other wound pathogens such as Staphylococcus aureus, Streptococcus pyogenes, Escherichia coli and Enterococci, suggesting a high specificity. In a proof-of-principle experiment, the colorimetric change of the sensor was detected by eye after 3 hours incubation with a PA culture.

Conclusions
The presence of Pseudomonas aeruginosa can be quickly and reliably detected by our vitamin B12-based colorimetric biosensor. Its incorporation inside the VAC-system can allow physicians to detect PA wound infections early on.