cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.57760/sciencedb.j00206.00030
title: Research on Semiparametric Asymmetric Joint Elicitable Risk Model Based on the Laplace Distribution---The proof of theorems and related R language programs
title: 基于拉普拉斯分布的半参非对称联合可导出风险模型研究------定理的证明及相关的R语言程序

description: The compressed file contains the proof of the theorem, the remaining empirical results, and related R language program code
description: The compressed file contains the proof of the theorem, the remaining empirical results, and related R language program code
DOI: 10.57760/sciencedb.j00186.00339
title: Improved isochronous mass spectrometry with tune measurement
title: Improved isochronous mass spectrometry with tune measurement

description: In 2024, we reported on a breakthrough in velocity spread elimination techniques in isochronous mass spectrometry. These data include basic information for data analysis.
description: In 2024, we reported on a breakthrough in velocity spread elimination techniques in isochronous mass spectrometry. These data include basic information for data analysis.
DOI: 10.57760/sciencedb.13194
title: Numerical simulation data of RC-DTH air hammer
title: 反循环气动潜孔锤数值模拟

description: This dataset records the data generated in the numerical simulation of optimizing the impact performance of a reverse circulation pneumatic down the hole hammer 
description: This dataset records the data generated in the numerical simulation of optimizing the impact performance of a reverse circulation pneumatic down the hole hammer
DOI: 10.57760/sciencedb.13199
title: A dataset of the in-situ ODS 304L stainless steel processed by laser powder bed fusion through oxygen content regulation and the effect on microstructure and mechanical properties
title: A dataset of the in-situ ODS 304L stainless steel processed by laser powder bed fusion through oxygen content regulation and the effect on microstructure and mechanical properties

description: Laser powder bed fusion (LPBF) is a widely used and well-developed additive manufacturing approach. To meet the higher material performance requirements for the fourth-generation nuclear power reactors, LPBF processing combined with oxide dispersion strengthening (ODS) is currently of interest among new materials designs and developments by dispersing nanoscale Y2O3 particles into the feeding powders to obtain the LPBF- ODS materials. Oxygen exposure and its introduction in the solvation cell, on the other hand, are usually considered detrimental but impossible to eliminate completely during the LPBF process. The understanding of this unavoidable process, however, is still limited. Here we develop a new LPBF-ODS design approach based on in-situ oxygen content regulation during the LPBF process. The oxygen content of the environment chamber was artificially adjusted through an online monitoring system to activate the reaction between oxygen and metal elements, thus forming the dispersed oxide particles in situ. Four batches of LPBFed 304L stainless steel samples were successfully processed under different oxygen levels to investigate the reinforcing effect of in-situ chemical alloying.
description: Laser powder bed fusion (LPBF) is a widely used and well-developed additive manufacturing approach. To meet the higher material performance requirements for the fourth-generation nuclear power reactors, LPBF processing combined with oxide dispersion strengthening (ODS) is currently of interest among new materials designs and developments by dispersing nanoscale Y2O3 particles into the feeding powders to obtain the LPBF- ODS materials. Oxygen exposure and its introduction in the solvation cell, on the other hand, are usually considered detrimental but impossible to eliminate completely during the LPBF process. The understanding of this unavoidable process, however, is still limited. Here we develop a new LPBF-ODS design approach based on in-situ oxygen content regulation during the LPBF process. The oxygen content of the environment chamber was artificially adjusted through an online monitoring system to activate the reaction between oxygen and metal elements, thus forming the dispersed oxide particles in situ. Four batches of LPBFed 304L stainless steel samples were successfully processed under different oxygen levels to investigate the reinforcing effect of in-situ chemical alloying.
DOI: 10.57760/sciencedb.13205
title: Multifunctional bio-based polyurethane foam effectively addresses mechanical damage, ethylene-induced ripening, microbial contamination of fruit
title: Multifunctional bio-based polyurethane foam effectively addresses mechanical damage, ethylene-induced ripening, microbial contamination of fruit

description: Biodegradable multifunctional polyurethane foam was synthesized through a straightforward in-situ method, exhibiting exceptional cushioning properties, ethylene adsorption capabilities, and antibacterial activity, thereby demonstrating considerable potential for sustainable packaging applications.
description: Biodegradable multifunctional polyurethane foam was synthesized through a straightforward in-situ method, exhibiting exceptional cushioning properties, ethylene adsorption capabilities, and antibacterial activity, thereby demonstrating considerable potential for sustainable packaging applications.
DOI: 10.57760/sciencedb.13532
title: A Database of Underwater Radiated Noise from Small Vessels in the Coastal Area [Supporting Code and Tables]
title: A Database of Underwater Radiated Noise from Small Vessels in the Coastal Area [Supporting Code and Tables]

description: The current procedures for measuring underwater radiated noise (URN) are designed for cooperating vessels in controlled areas. As such, not a lot of data is available for the URN of unidentified vessels of opportunity (VOO), especially for small vessels that do not carry an automatic identification systems (AIS). To this end, we assembled a database of 1148 VOO’s URN from acoustic and visual recordings of ferries, fishing boats, yachts, and small speed boats made within Šibenik canal, Croatia. The database comprises source pressure levels at the closest point of approach, picture and video of the vessel, and the vessel’s speed, size, and type. A shared webpage allows filtering and comparing vessel types and characteristics. To the best of our knowledge, this is one of the largest databases of vessel URN in general and the most extensive database for small coastal vessels. In this paper, we share the structure of our database, the analysis methodology. We conclude that the URN of small vessels is significant and compatible to large vessels.
description: The current procedures for measuring underwater radiated noise (URN) are designed for cooperating vessels in controlled areas. As such, not a lot of data is available for the URN of unidentified vessels of opportunity (VOO), especially for small vessels that do not carry an automatic identification systems (AIS). To this end, we assembled a database of 1148 VOO’s URN from acoustic and visual recordings of ferries, fishing boats, yachts, and small speed boats made within Šibenik canal, Croatia. The database comprises source pressure levels at the closest point of approach, picture and video of the vessel, and the vessel’s speed, size, and type. A shared webpage allows filtering and comparing vessel types and characteristics. To the best of our knowledge, this is one of the largest databases of vessel URN in general and the most extensive database for small coastal vessels. In this paper, we share the structure of our database, the analysis methodology. We conclude that the URN of small vessels is significant and compatible to large vessels.
DOI: 10.57760/sciencedb.nbsdc.00097
title: Dataset on bending strength of coelacanth scale and metopograpsus frontalis cheliped tip fiber-reinforced composites
title: Dataset on bending strength of coelacanth scale and metopograpsus frontalis cheliped tip fiber-reinforced composites

description:  T300 and T800 prepreg and arranged symmetrically.Then the prepreg was cut into blade layering with a specified angle andsize by the fiber cutter. Moreover, the 6061 aluminium alloyblade forming die was designed according to the blade size. Afterwards, the solid mould of the blade was manufactured by CNC processing. According to the re quirements of the aviation field, the paving method was manual. Next, the cut blade lay-up was manually laid on the blade solid die according to the set lay-up angle and layout structure. The forming process of CFCFBs was the same as that of laminates. Finally, the blade was prepared by the post processing technology of cutting and grinding.The samples of curved laminates were prepared to 80 mm× 15 mm squares according to GB/T 1449e2005 stan dard. Then the flexural property was tested by DNS-100 uni versal testing machine. Among them, the test span of flexural performance was 50 mm, and the pressure rate of the indenter was 2 mm min -1.
description:  T300 and T800 prepreg and arranged symmetrically.Then the prepreg was cut into blade layering with a specified angle andsize by the fiber cutter. Moreover, the 6061 aluminium alloyblade forming die was designed according to the blade size. Afterwards, the solid mould of the blade was manufactured by CNC processing. According to the re quirements of the aviation field, the paving method was manual. Next, the cut blade lay-up was manually laid on the blade solid die according to the set lay-up angle and layout structure. The forming process of CFCFBs was the same as that of laminates. Finally, the blade was prepared by the post processing technology of cutting and grinding.The samples of curved laminates were prepared to 80 mm× 15 mm squares according to GB/T 1449e2005 stan dard. Then the flexural property was tested by DNS-100 uni versal testing machine. Among them, the test span of flexural performance was 50 mm, and the pressure rate of the indenter was 2 mm min -1.
DOI: 10.15468/dl.yf84u8
title: Occurrence Download

description: A dataset containing 4325 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasGeospatialIssue is false",
 "HasCoordinate is true",
 "TaxonKey is one of (Aneides flavipunctatus (Strauch, 1870))"
 ]
}

 The dataset includes 4325 records from 22 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0001101-250426092105405/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.57760/sciencedb.13220
title: Dataset on impact resistance of coelacanth scales-inspired fiber-reinforced composites
title: Dataset on impact resistance of coelacanth scales-inspired fiber-reinforced composites

description: The CEAST 9350drop hammer impact machine was used in the experiment in this work. In order to achieve the impact energy of 8, 12, and 16J required for the impact test, the impactor whose mass was 5.41kg was freed at different heights to make it have corresponding impact speeds of 1.72 m s 1, 2.11m s 1, and 2.43m s 1. Because UL-BFRC failed on the first impact, only one impact test was carried out. The remaining samples were carried out 5 successive impact tests at the same position. The impact resistance of the laminate could be analyzed according to the contact force, impact displacement, and energy of the impactor during the impact.
description: The CEAST 9350drop hammer impact machine was used in the experiment in this work. In order to achieve the impact energy of 8, 12, and 16J required for the impact test, the impactor whose mass was 5.41kg was freed at different heights to make it have corresponding impact speeds of 1.72 m s 1, 2.11m s 1, and 2.43m s 1. Because UL-BFRC failed on the first impact, only one impact test was carried out. The remaining samples were carried out 5 successive impact tests at the same position. The impact resistance of the laminate could be analyzed according to the contact force, impact displacement, and energy of the impactor during the impact.
DOI: 10.57760/sciencedb.13223
title: Dataset on impact resistance of dactyl club of mantis shrimp-inspired fiber-reinforced composites
title: Dataset on impact resistance of dactyl club of mantis shrimp-inspired fiber-reinforced composites

description: The low-velocity impact test was carried out in room temperature by the Instron CEAST 9350 impact machine, the weight of the impactor was 5.41 kg, the impact height was 377.21 mm, and the impact speed was 2.72 m/s, the impact energy was 20.01 J. The hemi spherical impactor with a radius of 8 mm was released in corresponding height to achieve the required energy. All the four specimens were fixed on the base by four rubber clamps. The low- velocity impact tests were repeated up to five times at the same point of every sample or until the laminate was significantly damaged. 
description: The low-velocity impact test was carried out in room temperature by the Instron CEAST 9350 impact machine, the weight of the impactor was 5.41 kg, the impact height was 377.21 mm, and the impact speed was 2.72 m/s, the impact energy was 20.01 J. The hemi spherical impactor with a radius of 8 mm was released in corresponding height to achieve the required energy. All the four specimens were fixed on the base by four rubber clamps. The low- velocity impact tests were repeated up to five times at the same point of every sample or until the laminate was significantly damaged.
DOI: 10.57760/sciencedb.13226
title: Dataset on bending resistance of dactyl club of mantis shrimp-inspired sandwich structure
title: Dataset on bending resistance of dactyl club of mantis shrimp-inspired sandwich structure

description: The low‐velocity drop weight impact tests were carried out by 9350 impact machine with a weight of 3 kg. The impact samples were tested under 12.63 J impact energy according to ASTM D 7136 standard. The impactor with hemispherical nose 16 mm in diameter was released in corresponding height to achieve the required energy. The impact sample with a size of 100 mm × 100 mm × 23 mm was placed on a circular clamp with a middle hole 70 mm in diameter. The impact tests were repeated up to five times at the same point in every sample. We can analyze the impact behavior in terms of contact force and absorbed energy.
description: The low‐velocity drop weight impact tests were carried out by 9350 impact machine with a weight of 3 kg. The impact samples were tested under 12.63 J impact energy according to ASTM D 7136 standard. The impactor with hemispherical nose 16 mm in diameter was released in corresponding height to achieve the required energy. The impact sample with a size of 100 mm × 100 mm × 23 mm was placed on a circular clamp with a middle hole 70 mm in diameter. The impact tests were repeated up to five times at the same point in every sample. We can analyze the impact behavior in terms of contact force and absorbed energy.
DOI: 10.57760/sciencedb.13228
title: 5.Dataset on bending resistance and impact resistance of dactyl club of mantis shrimp-inspired sandwich structure
title: 5.Dataset on bending resistance and impact resistance of dactyl club of mantis shrimp-inspired sandwich structure

description: Three-point flexural tests were performed by computer control electronic universal testing machine (DNS-100). These three structural honeycombs were estimated for five samples at a constant speed of 10 mm/min respectively, then took the average value. Wecould also figure out the energy absorption that was calculated as the area integral of the corresponding load-displacement curve of specimens under bending tests. Geometry of bending samples had a featured size of 125 mm 46mmandhadanaveragethickness of 18 mm, and the support span distance was 70 mm. 
description: Three-point flexural tests were performed by computer control electronic universal testing machine (DNS-100). These three structural honeycombs were estimated for five samples at a constant speed of 10 mm/min respectively, then took the average value. Wecould also figure out the energy absorption that was calculated as the area integral of the corresponding load-displacement curve of specimens under bending tests. Geometry of bending samples had a featured size of 125 mm 46mmandhadanaveragethickness of 18 mm, and the support span distance was 70 mm.
DOI: 10.57760/sciencedb.13230
title: Dataset on tensile resistance of nacre-inspired fiber-reinforced composites
title: Dataset on tensile resistance of nacre-inspired fiber-reinforced composites

description: A finite element model of nacre-inspired continuous fiber-reinforced laminated composites (NICFRLC) was developed, and the elastic modulus of basalt-carbon NICFRLC have been calculated by HYPERMESH. And the elastic modulus were verified by experimental results in tensile tests. This numerical model would give a guidance for the future work on manufacturing composites.
description: A finite element model of nacre-inspired continuous fiber-reinforced laminated composites (NICFRLC) was developed, and the elastic modulus of basalt-carbon NICFRLC have been calculated by HYPERMESH. And the elastic modulus were verified by experimental results in tensile tests. This numerical model would give a guidance for the future work on manufacturing composites.
DOI: 10.57760/sciencedb.13248
title: Mechanical improvement of carbon fiber/epoxy composites by sizing functionalized carbon nanotubes on fibers
title: Mechanical improvement of carbon fiber/epoxy composites by sizing functionalized carbon nanotubes on fibers

description:   The CFRP laminates from T300 prepreg were obtained by using a vacuum molding process. The pressure of this vacuum molding process is kept at about 0.5–2.5 MPa to obtain CFRP laminates.   Surface morphologies of the CF after sizing treatments were observed by field emission scanning electron microscopy (FESEM, FEI Nova Nano, 450 microscope), and chemical structure change of MWCNT in the range of 500–4000 cm 1 was conducted with a resolution of 4cm1 by Fourier transform infrared spectroscopy (FTIR, Thermo Scientific, Waltham, MA, USA).   The specimens for three-point bending tests were performed based on the ASTM D7264, which is commonly used for high-performance fibers/polymer composites.29 In each group, no less than five parallel samples were used, and results were calculated by using an average value of these samples. After the mechanical test, the failure morphologies of the samples were observed by scanning electron microscopy (SEM, Evo-18 Zeiss., Oberkochen, Germany) with an acceleration voltage of 15–20 kV. The ILSS of CFRP was conducted with a loading rate of 2 mm/min based on the ASTM D2344 and by using an electronic universal testing machine (INSTRON 5598, USA).
description:   The CFRP laminates from T300 prepreg were obtained by using a vacuum molding process. The pressure of this vacuum molding process is kept at about 0.5–2.5 MPa to obtain CFRP laminates.   Surface morphologies of the CF after sizing treatments were observed by field emission scanning electron microscopy (FESEM, FEI Nova Nano, 450 microscope), and chemical structure change of MWCNT in the range of 500–4000 cm 1 was conducted with a resolution of 4cm1 by Fourier transform infrared spectroscopy (FTIR, Thermo Scientific, Waltham, MA, USA).   The specimens for three-point bending tests were performed based on the ASTM D7264, which is commonly used for high-performance fibers/polymer composites.29 In each group, no less than five parallel samples were used, and results were calculated by using an average value of these samples. After the mechanical test, the failure morphologies of the samples were observed by scanning electron microscopy (SEM, Evo-18 Zeiss., Oberkochen, Germany) with an acceleration voltage of 15–20 kV. The ILSS of CFRP was conducted with a loading rate of 2 mm/min based on the ASTM D2344 and by using an electronic universal testing machine (INSTRON 5598, USA).
DOI: 10.57760/sciencedb.13250
title: Effect of holmium oxide nanoparticle on the mechanical properties of epoxy resin composites
title: Effect of holmium oxide nanoparticle on the mechanical properties of epoxy resin composites

description: The materials used were commercially available bisphenol Aepoxyresin of type E51 (Yehao Co.Ltd, WX, China), JD 365curing agent (MYChemicalCo.Ltd,China)withafixed  ratio to resin ranging from 1:3 to 1:4, holmium oxide (LS  Co.Ltd, TJ, China), and silane coupling agent (SCA) of type  KH550 (CSJ Co. Ltd, NJ, China) The preparation pro cess is shown in Figure 1.TheHo2O3/EP nanocomposites with  different contents of Ho2O3 (0,0.5,1,1.5wt.%)wereprepared  for comparison experiments. Firstly, a certain amount of ac etone was mixed with epoxy resin, and then a certain amount of  Ho2O3 particles were added and dispersed under the combined  effect of ultrasonication and mechanical stirring for 2-4 h, after  removing the excess acetone, the curing agent was added and  stirred mechanically for 0.5 h, and then the mixtures were  placed in a vacuum drying oven to remove air bubbles and  poured into the mold, and the total curing process was about 5 h  after two steps, and then the specimens were removed from the  mold and were cooled to room temperature.
description: The materials used were commercially available bisphenol Aepoxyresin of type E51 (Yehao Co.Ltd, WX, China), JD 365curing agent (MYChemicalCo.Ltd,China)withafixed  ratio to resin ranging from 1:3 to 1:4, holmium oxide (LS  Co.Ltd, TJ, China), and silane coupling agent (SCA) of type  KH550 (CSJ Co. Ltd, NJ, China) The preparation pro cess is shown in Figure 1.TheHo2O3/EP nanocomposites with  different contents of Ho2O3 (0,0.5,1,1.5wt.%)wereprepared  for comparison experiments. Firstly, a certain amount of ac etone was mixed with epoxy resin, and then a certain amount of  Ho2O3 particles were added and dispersed under the combined  effect of ultrasonication and mechanical stirring for 2-4 h, after  removing the excess acetone, the curing agent was added and  stirred mechanically for 0.5 h, and then the mixtures were  placed in a vacuum drying oven to remove air bubbles and  poured into the mold, and the total curing process was about 5 h  after two steps, and then the specimens were removed from the  mold and were cooled to room temperature.
DOI: 10.57760/sciencedb.13252
title: Enhanced flexural properties of bionic carbon fiber sandwiches inspired by
title: Enhanced flexural properties of bionic carbon fiber sandwiches inspired by

description: Firstly, porous particles with the size of 3–4 mm were transferred to a cylindrical mould. The particles and mould were preheated at 260 ◦C and 500 ◦C, respectively. Secondly, the molten magnesium was poured into the mould and infiltrated into the gaps between the particles under vertical pressure. Finally, after solidification, the MSFs were obtained. The volume fraction of the particles in MSFs was about 64%. The MSFs were cut and polished to the size of ~ 60 mm × 15 mm × 10 mm to be further used as the cores of bionic sandwiches. The core materials were attached to the CFRP skins using epoxy resin adhesives under low pressure. The obtained two types of bionic sandwich structures were named CFRP/PMSF and CFRP/SMSF, respectively. CFRP represents unidirectional CFRP skin, PMSF and SMSF are two kinds of MSF cores. 
description: Firstly, porous particles with the size of 3–4 mm were transferred to a cylindrical mould. The particles and mould were preheated at 260 ◦C and 500 ◦C, respectively. Secondly, the molten magnesium was poured into the mould and infiltrated into the gaps between the particles under vertical pressure. Finally, after solidification, the MSFs were obtained. The volume fraction of the particles in MSFs was about 64%. The MSFs were cut and polished to the size of ~ 60 mm × 15 mm × 10 mm to be further used as the cores of bionic sandwiches. The core materials were attached to the CFRP skins using epoxy resin adhesives under low pressure. The obtained two types of bionic sandwich structures were named CFRP/PMSF and CFRP/SMSF, respectively. CFRP represents unidirectional CFRP skin, PMSF and SMSF are two kinds of MSF cores.