bluuebunny/crossref_metadata_2025_split huggingface dataset:
Optimal sitting, sizing and control of battery energy storage to enhance dynamic stability of low‐inertia grids
Authors: Jannesar Mohammad Rasol , Sadr Sajad , Savaghebi Mehdi 
Published: September 2024

AbstractAs inverter‐based resources like wind turbines increase, grid inertia and stability decrease. Optimal placement and control of energy storage systems can stablise low‐inertia grids. This paper investigates how optimal battery energy storage systems (BESS) enhance stability in low‐inertia grids after sudden generation loss. The sitting, sizing and control of BESS are determined simultaneously in each genetic algorithm (GA) population, then voltage and frequency stability is evaluated based on the network simulation. This continues until the optimal solution is found. A network based on Kundur's four‐machine system is modelled for the first study and two of the four synchronous generators (SGs) have been replaced with wind farms. Then, the production of the third SG has been decreased by 13%. According to the results, addition of wind farms causes the frequency drop below 49.6 Hz for more than 5 min, indicating instability. It is also demonstrated that with optimal control parameters and placement, a 60 MW BESS can alleviate the voltage and frequency fluctuations, leading to enhanced stability. This method has also been tested on the IEEE 39‐bus network, where the installation of a BESS with a capacity of 9 MVA could restore the frequency stability.
A collaborative approach to support people with a disability living in Australian group homes during the COVID-19 pandemic: a case study
Authors: Everingham James , Todd Sarah , Lo Sarita Y. , Naganathan Vasi 
Published: September 2024

In this case study we describe how Sydney Local Health District (SLHD) Disability Inclusion and Advice Service (DIAS) provided support to disability group homes during the COVID-19 Delta and Omicron waves. The study provides insights into group home providers’ experience of supports implemented by SLHD and other stakeholders. A mixed method approach was undertaken that included analysing data from a database and electronic medical records and a survey of disability group home managers. DIAS developed a range of processes to support prevention, outbreak preparedness and response. This included developing a Disability Shared Living COVID-19 Pathway, engaging with group home providers through a fortnightly Community of Practice, assisting with improving vaccination status and procuring personal protective equipment. During an outbreak DIAS provided a 24 h, 7 days per week on call support, coordinated outbreak management team meetings and collaborated with several internal and external stakeholders. SLHD infection prevention and control nurses were recruited to undertake a process of reviewing outbreak management plans and providing support during an outbreak. Most disability providers (86%) reported that they felt very prepared to manage outbreaks at the time of the survey (August 2022) compared with the pre-Delta wave, for which 36% reported feeling ‘not prepared’. The proportion who rated the support from the stakeholders as very supportive/supportive was as follows: SLHD (100%), NSW Health (64%), National Disability Insurance Agency (50%) and National Disability Insurance Scheme Quality & Safeguards Commission (37%). Our case study provides insights into the support that LHDs can provide to disability homes in response to future outbreaks.
Research on integrated energy system of fuel cells for space application
Authors: Feng Lei , Wang Jingrun , Xie Wen , Wen Chen , Li Sizhen , Cui Qingxin , Wan Chengan , Zhao Yubin 
Published: September 2024

Abstract
The current research status of fuel cells in the space field is first introduced, followed by an analysis of the comprehensive utilization mode of fuel cell energy from three aspects: water, gas, and heat. The fuel evaporated from the liquid hydrogen and liquid oxygen tanks of spacecraft can be used for fuel cell power generation. The heat generated by fuel cells can be used to preheat gases through a dual-channel heat exchanger, achieving thermal energy recovery for hydrogen and oxygen fuels. The water produced by fuel cells can be separated and recovered through static drainage for reuse in heating control or environmental control systems. A prototype of a fuel cell power generation system is designed and relevant performance tests are conducted. When the fuel cell system stably generates 400W of power, approximately 215W of waste heat can be reused. The utilization efficiency of hydrogen and oxygen fuels reaches over 97%, and the water recovery efficiency of the system reaches over 95%.
An MXene/cellulose nanofiber-based multi-parametric tactile sensor for object material identification
Authors: Wu Libo , Yao Yongkang 
Published: September 2024

Abstract
We propose a novel multi-parametric tactile sensor that can realize force and slip sensing during the contact between a manipulator and a target. The pressure-sensitive unit of this sensor is prepared by homemade MXene and cellulose nanofiber (CNF) composite conductive film, which has high sensitivity of pressure-sensitive response. The triboelectric unit is made of a chemically stable PTFE film with high electron-acquiring ability as the triboelectric sensing layer together with metal electrodes. Experiments have demonstrated that the prepared sensors have high sensitivity, fast response, and excellent durability and stability over 5000 cycles. Combined with the established machine learning algorithm model, the pressure and triboelectric signals of this multi-parametric tactile sensor were used to recognize 15 types of materials with similar characteristics and with 94.33% identification accuracy. This work shows the great potential of multi-parametric tactile sensors for applications in item sorting, human-machine interaction, and other fields.
Evaluation of AGeX3 structured perovskite solar cells based on density functional theory
Authors: Su Jiaxin , Zhang Wenjie , Meng Xiangrui , Zhang Meilin , Wu Jiang 
Published: September 2024

Abstract
Density functional theory (DFT), as a theory to explore the electron microscopic structure of materials, guides and promotes the rapid development of the perovskite field. In the context of the global energy revolution, “green”, “safe”, and “sustainable” have become the keywords in the field of perovskite research. Because of its abundant reserves on the earth, less harm to the environment and human health, strong stability, and other advantages, germanium has been widely concerned in the field of perovskite solar cells (PSCs). In this study, the differential charge densities, the total densities of states (TDOS), the partial densities of states (PDOS), and the thermodynamic properties of four AGeX3 germanium-based perovskite materials are calculated by using Materials Studio (MS). It is found that Ge atomic orbital electrons play a crucial role in the absorption of photon energy and the generation of photocurrent. The PSCs of the AGeX3 structure will perform better. This study contributes to the realization of efficient germanium-based PSCs in experiments, provides a broad prospect for researchers in this field, and plays a vital role in the future research of germanium-based perovskite.
Simulation and analysis of solar-assisted air source heat pump heating system in severe cold region
Authors: Tan Zilin , An Qier 
Published: September 2024

Abstract
severe cold and remote areas such as the west of Inner Mongolia, due to the vast land and sparse population, the coverage rate of heating pipes is low, resulting in high non-renewable energy consumption in building heating. To diminish the reliance on pollution energy and utilize sufficient solar energy resources, this study introduces a solar-assisted air source heat pump heating system (SASHP). Using TRNSYS to simulate the SAHSP’s system performance, the result indicates a good thermal environment between 12°C and 20°C. The average solar fraction in the coldest month of January is 33.45%, with a good heat collection efficiency. Compared with a single heating system, the SASHP’s total energy consumption was reduced by 45.11%, and SEER increased by 1.4 times. Optimization analysis displays that when the collector area is 100 square meters, and the tank volume is 5.5 cubic meters, the system achieves the best energy-saving effect. An optimized system can save 10,828.46 kg of standard coal annually during the heating period.
On-line junction temperature identification of converter power devices
Authors: Fu Xinyu , Jin Miaoxin , Huang Yuanju , Du Jingrun , Wei Kongyi 
Published: September 2024

Abstract
Traction converters often fail or age due to long operation hours, complex conditions, and frequent braking, mainly caused by overheating or temperature fluctuations. Monitoring the temperature at the junction of power device is crucial for system reliability. To achieve this, the electric-heat coupling models of IGBT are studied. Models for IGBT’s switching and conduction processes were created using its data sheet, yielding a power loss model linked to junction temperature. A Foster thermal network model for IGBT was then established, deriving the equation for temperature change when losses act as heat sources. Combining these models, an electric-heat coupling model was built on the SIMULINK platform, applied to predict and simulate junction temperature in a two-level inverter, generating a temperature-time image. Finally, an experimental test platform for a two-level SVPWM-modulated inverter was set up, using an infrared sensor to measure IGBT’s steady-state junction temperature. This was compared with simulation results to verify the model’s accuracy.
Control strategy of PV microgrid grid-connected inverter
Authors: Wang Lina , Xu Hongguang , Li Wei , Lin Qiang , Zhang Haoxu , Liu Jun , Cheng Xiaojun 
Published: September 2024

Abstract
Aiming at the limitation of a three-phase inverter system to access clean energy, a design scheme of a two-stage microgrid grid-connected inverter system is proposed. The traditional double closed-loop control strategy has some disadvantages such as slow response, large fluctuation, and delay of frequency and phase tracking. Therefore, this paper proposes an improved grid-connected control strategy for photovoltaic microgrids with the addition of prediction units, which is established and verified by simulation. The results show that compared with the traditional method, the proposed control method has the advantages of fast dynamic response, small pulsation, and high power quality.
Thermodynamic analysis of heat pump heating system based on flue gas waste heat recovery
Authors: Chen Jingshi , Tian Cong 
Published: September 2024

Abstract
A lot of waste heat has not been recycled from exhaust gas of gas-fired condensing boilers. By enhancing boiler’s thermal efficiency, condensation latent and heat sensible heat should be deeply utilized. This article uses a heat pump to recover the waste heat from boiler flue gas to improve the heating efficiency of the unit. Taking an example of boiler unit, to illustrate the function of the thermodynamic capability, this article create a new heating system by installing a flue gas condenser and a low-temperature economizer, and a thermodynamic model.
The experimental results show that if gas is cooling from 130°C to90°C and coefficient of performance(Cop
) is set by 1.746, by setting a low-temperature economizer, 20.87MW can be obtained from waste heat, which decrease water consumption of desulfurization tower 28.792t / h; due to that the heat pump use the condenser, waste heat can be recovered to 10.10MW and condensed water can be recovered to13.654t / h. When heat network’s return water increases, Cop
decreases, but efficiency will increases in network; when outlet water in condenser increases, Cop
and network efficiency decrease, but heat pump system increases in efficiency.
Study on the influence of cap connection mode on the deformation of all-steel spiral anchor
Authors: Liu Hongliang , Zhao Yong , Qie Kaixuan , Gao Zhiyue , Wang Teng , Zhang Zhenyue , Zhang Bingliang , Zhu Huimin 
Published: September 2024

Abstract
Spiral anchors find widespread use across diverse projects, including residential, commercial, street lamp poles, photovoltaic systems, and transmission tower infrastructure, due to their simple structure, convenient construction, high degree of mechanization, and minimal soil disturbance. All-steel spiral anchors offer notable advantages in terms of ease and environmental friendliness. To bolster their utilization in power transmission engineering applications, based on the application requirements of the spiral anchor foundation of the Weifang Guanting transmission tower, the influence of the connection method of the bearing platform on the deformation of the all-steel spiral anchor is studied. The results show that both the welding and bolt connection methods can meet the required stiffness of the project.
Integrated planning research of active distribution networks considering electric vehicle integration in the context of dual carbon
Authors: Pan Yuanlin , Li Zhenbin , Gao Lei , Su Xinyi , Chen Junjie , Huang Songling 
Published: September 2024

Abstract
Against the backdrop of the dual carbon strategy, electric vehicles are experiencing rapid growth in popularity due to their environmentally friendly characteristics. However, their load volatility, randomness, and impact also present new challenges to the carrying capacity of the distribution network. Addressing the inadequacies of existing research in tackling these challenges from the perspective of distribution network planning, this paper proposes a method that integrates the optimization planning of distributed energy supply systems, flexible DC systems, and charging piles in the active distribution network by analyzing the spatiotemporal characteristics of electric vehicle charging loads and ensuring the basic charging needs of electric vehicles, utilizing flexible regulation resources such as V2G, flexible DC systems, and energy storage, and comprehensively considering system carrying capacity, green and low-carbon level, and economic factors through the analytic hierarchy process. Typical case studies demonstrate that through this method, the planning system can effectively enhance the carrying capacity of the distribution network, improve the self-consistency of green energy, and reduce the overall life-cycle energy costs in the region during operation.
Study on yield strength of in-service X80 pipeline based on indentation method
Authors: Jia Haidong , Xie Wei , Nie Hailiang , Li Kun , Zhao Sen , Dang Wei , Ren Junjie , Liang Xiaobin , Wang Ke , Ma Weifeng 
Published: September 2024

Abstract
In recent years, the unqualified material of high-steel pipe has attracted attention. Unqualified mechanical properties of pipe base metal and girth weld material will bring great hidden dangers to its safe operation. The tensile test can obtain the yield strength and tensile strength of the material, but it cannot be directly applied to the in-service pipeline. In this paper, the indentation method, indoor tensile test, and other technologies are used to test the strength of X80 steel pipe girth weld and base material. Through comparative analysis, it is found that the error rate of yield strength measurement of in-service X80 pipe based on the indentation method is less than 15%. Within the allowable error range of engineering, this method can guide pipeline operators to check unqualified materials online.
Exploring causal effects and potential mediating mechanisms of genetically linked environmental senses with intracerebral hemorrhage
Authors: Wang Yaolou , Shen Yingjie , Shen Jinru , Fan Zhaoxin , Zhang Jie , Zhou Jiaxin , Lv Hui , Ma Wei , Liang Hongsheng 
Published: September 2024

Abstract
The occurrence mechanism of intracerebral hemorrhage remains unclear. Several recent studies have highlighted the close relationship between environmental senses and intracerebral hemorrhage, but the mechanisms of causal mediation are inconclusive. We aimed to investigate the causal relationships and potential mechanisms between environmental senses and intracerebral hemorrhage. Multiple Mendelian randomization methods were used to identify a causal relationship between environmental senses and intracerebral hemorrhage. Gut microbiota and brain imaging phenotypes were used to find possible mediators. Enrichment and molecular interaction analyses were used to identify potential mediators and molecular targets. No causal relationship between temperature and visual perception with intracerebral hemorrhage was found, whereas long-term noise was identified as a risk factor for intracerebral hemorrhage (OR 2.95, 95% CI: 1.25 to 6.93, PIVW = 0.01). The gut microbiota belonging to the class Negativicutes and the order Selenomonadales and the brain image–derived phenotypes ICA100 node 54, edge 803, edge 1149, and edge 1323 played mediating roles. “Regulation of signaling and function in synaptic organization” is the primary biological pathway of noise-induced intracerebral hemorrhage, and ARHGAP22 may be the critical gene. This study emphasized the importance of environmental noise in the prevention, disease management, and underlying biological mechanisms of intracerebral hemorrhage.
Case Report: the transcatheter extraction of an atrial mass (TEXAS) technique
Authors: Ahmad Umad , Prayaga Sastry , Kemp Stephanie , Goswami Nilesh 
Published: September 2024

Abstract

Background
Intracardiac masses are historically treated with surgery. As percutaneous technologies continue to evolve, non-surgical techniques for mass removal may become options. We present a case of a woman with a large right atrial mass that was percutaneously removed en bloc without surgery.

Case summary
A 77-year-old woman presents with a 40 mm right atrial mass. The mass was increasing in size, and she preferred to avoid surgical removal. The tumour was removed percutaneously from the femoral vein using a large suction cannula in combination with transection of the stalk using an electrified snare. The case was complicated by a haemopericardium that was treated successfully by injecting a haemostatic matrix into the pericardial space. The pathology returned papillary fibroelastoma.

Discussion
The TEXAS technique used to remove the right atrial mass in this case is a modification of a previously described technique (SEATTLE procedure). Using this method, we were able to remove a 40 mm tumour from the right atrium without surgery. This is the largest reported intracardiac tumour that has been removed en bloc percutaneously. Percutaneous removal of right atrial tumours appears feasible, although this may be limited to smaller tumours based on the results of our case.
Inflammatory stimuli impact on cellular uptake and biodistribution of perfluorocarbon nanoemulsions
Authors: Becker Katrin , Ding Zhaoping , Bouvain Pascal , Koshy Jeny , Massold Timo , Kleimann Patricia , Flögel Ulrich , Temme Sebastian 
Published: September 2024

Abstract
Intravenously administered perfluorocarbon nanoemulsions (PFCs) are taken up by phagocytic immune cells, which enables the noninvasive visualization of inflammatory hot spots by combined 1H/19F magnetic resonance imaging. However, little is known about the influence of inflammatory stimuli on cellular uptake and biodistribution of PFCs. Here, we systematically investigated the impact of inflammation induced by subcutaneous implantation of Matrigel/lipopolysaccharide or myocardial infarction (50 min ischemia reperfusion) on PFC uptake and biodistribution in C57BL/6J mice. We detected strong 19F signals in Matrigel/lipopolysaccharide plugs and infarcted hearts, which were completely absent in controls. Cellular uptake of PFCs was increased in neutrophils isolated from the blood and Matrigel/lipopolysaccharide plugs, whereas uptake by monocytes was only slightly elevated. In contrast, myocardial infarction caused only a moderate early increase of PFC uptake in monocytes and neutrophils. Interestingly, the inflammatory model did also affect the biodistribution of the PFCs. The blood half-life of PFCs was slightly increased after Matrigel/lipopolysaccharide implantation, whereas it was reduced after myocardial infarction. Compared to controls, the 19F signal of the liver was significantly stronger in Matrigel/lipopolysaccharide but not in myocardial infarction animals. Interestingly, stimulation of primary immune cells and RAW264.7 macrophages with lipopolysaccharide had no effect on PFC uptake, whereas C-reactive protein incubation elevated internalization of PFCs at least in RAW264.7 cells. In conclusion, we show that the cellular PFC uptake can differ between individual inflammatory conditions. This is an important aspect that has to be considered for the proper interpretation of 1H/19F magnetic resonance imaging data obtained from inflammatory hot spots.
Article 2 (5)
Authors: Aust Helmut Philipp 
Published: September 2024

Abstract
This chapter explores Art 2 (5) of the UN Charter, which consists of two sub-principles. Its first part contains a positive obligation and stipulates that UN member States shall ‘give the United Nations every assistance in any action it takes in accordance with the present Charter’. The second part of Art 2 (5) is negative in character and requires the UN member States to ‘refrain from giving assistance to any state against which the United Nations is taking preventive or enforcement action’. These two parts of Art 2 (5) may be seen as two sides of the same coin. Article 2 (5) highlights the bonds of solidarity between the UN and its member States. The provision underlines that the success of a system of collective security depends on the active support of its members as well as their willingness to isolate those States—and today also other actors—which are considered to endanger international peace and security.
Article 3
Authors: Riznik Donald , Fastenrath Ulrich 
Published: September 2024

Abstract
This chapter examines Art 3 of the UN Charter. Article 3 governs initial membership in the United Nations and was therefore properly placed as the first of four provisions in Chapter II (‘Membership’). Like the Covenant of the League of Nations (Art 1), the UN Charter distinguishes between two groups of members: the original members designated in Art 3 and those admitted later pursuant to Art 4. The former are defined by two alternative criteria: they either participated in the founding conference at San Francisco or had previously signed the ‘Declaration by United Nations’. In both cases, they must also have signed and ratified the Charter in accordance with Art 110 as indeed did all concerned States. Although, from a historical perspective, Art 3 plays an important role for the raison d’être and the legitimacy of the UN, it does not provide for a privileged position of original members vis-à-vis- subsequent members. Nevertheless, Art 3 may still retain some relevance today in cases of political change affecting statehood or continuity of a State, as subsequent sporadic UN practice demonstrates.