Electronic Devices Research Articles

The impact of the world’s first regulatory, multi-setting intervention on sedentary behaviour among children and adolescents (ENERGISE): a natural experiment evaluation

BackgroundRegulatory actions are increasingly used to tackle issues such as excessive alcohol or sugar intake, but such actions to reduce sedentary behaviour remain scarce. World Health Organization (WHO) guidelines on sedentary behaviour call for system-wide policies. The Chinese government introduced the world’s first nation-wide multi-setting regulation on multiple types of sedentary behaviour in children and adolescents in July 2021. This regulation restricts when (and for how long) online gaming businesses can provide access to pupils; the amount of homework teachers can assign to pupils according to their year groups; and when tutoring businesses can provide lessons to pupils. We evaluated the effect of this regulation on sedentary behaviour safeguarding pupils.MethodsWith a natural experiment evaluation design, we used representative surveillance data from 9- to 18-year-old pupils before and after the introduction of the regulation, for longitudinal (n = 7,054, matched individuals, primary analysis) and repeated cross-sectional (n = 99,947, exploratory analysis) analyses. We analysed pre-post differences for self-reported sedentary behaviour outcomes (total sedentary behaviour time, screen viewing time, electronic device use time, homework time, and out-of-campus learning time) using multilevel models, and explored differences by sex, education stage, residency, and baseline weight status.ResultsLongitudinal analyses indicated that pupils had reduced their mean total daily sedentary behaviour time by 13.8% (95% confidence interval [CI]: -15.9 to -11.7%, approximately 46 min) and were 1.20 times as likely to meet international daily screen time recommendations (95% CI: 1.01 to 1.32) one month after the introduction of the regulation compared to the reference group (before its introduction). They were on average 2.79 times as likely to meet the regulatory requirement on homework time (95% CI: 2.47 to 3.14) than the reference group and reduced their daily total screen-viewing time by 6.4% (95% CI: -9.6 to -3.3%, approximately 10 min). The positive effects were more pronounced among high-risk groups (secondary school and urban pupils who generally spend more time in sedentary behaviour) than in low-risk groups (primary school and rural pupils who generally spend less time in sedentary behaviour). The exploratory analyses showed comparable findings.ConclusionsThis regulatory intervention has been effective in reducing total and specific types of sedentary behaviour among Chinese children and adolescents, with the potential to reduce health inequalities. International researchers and policy makers may explore the feasibility and acceptability of implementing regulatory interventions on sedentary behaviour elsewhere.

NON-CARCINOGENIC VCI SOLUTION FOR LONG TERM METAL PROTECTION

Corrosion is a dangerous and extremely costly problem. Because of it, buildings and bridges can collapse, oil pipelines break, chemical plants leak, and bathrooms flood. Corroded electrical contacts can cause fires and other problems, corroded medical implants may lead to blood poisoning, and air pollution has caused corrosion damage to work around the world. Corrosion threatens the safe disposal of radioactive waste that must be stored in containers for tens of thousands of years. When reduction and oxidation take place on different kinds of metal in contact with one another, the process is called galvanic corrosion. In electrolytic corrosion, which occurs most commonly in electronic equipment, water or other moisture becomes trapped between two electrical contacts that have an electrical voltage applied between them. The result is an unintended electrolytic cell. VCI is the generic term for “volatile corrosion inhibitor” a revolutionary technology that simplifies corrosion protection and is ideal for keeping enclosed void spaces (e.g., packages, equipment internals, or structural metal cavities) rust-free. Keywords: Corrosion; VCI; Rust.

Engineering strategies for high‐voltage LiCoO2 based high‐energy Li‐ion batteries

AbstractTo drive electronic devices for a long range, the energy density of Li‐ion batteries must be further enhanced, and high‐energy cathode materials are required. Among the cathode materials, LiCoO2 (LCO) is one of the most promising candidates when charged to higher voltages over 4.3 V. However, high‐voltage LCO materials are confronted with severe surface and bulk issues inducing poor cyclic stability. To completely unleash the potential of LCO cathodes, a more comprehensive theoretical understanding of the underlying issues is necessary, along with active exploration of previous modifications. This paper mainly presents the degradation mechanisms of LCO under high voltage, the formation and evolution mechanisms of the cathode electrolyte interface, and the surface engineering strategies employed to enhance the cell performance. By organizing and summarizing these modifications, this work aims to establish associations among common research issues and to suggest future research priorities, thus facilitating the rapid development of high‐voltage LCO.

Continuous Lithium‐Ion Extraction From Seawater and Mine Water With a Fuel Cell System and Ceramic Membranes

The demand for electronic devices that utilize lithium is steadily increasing in this rapidly advancing technological world. Obtaining high‐purity lithium in an environmentally friendly way is challenging by using commercialized methods. Herein, we propose the first fuel cell system for continuous lithium‐ion extraction using a lithium superionic conductor membrane and advanced electrode. The fuel cell system for extracting lithium‐ion has demonstrated a twofold increase in the selectivity of Li+/Na+ while producing electricity. Our data show that the fuel cell with a titania‐coated electrode achieves 95% lithium‐ion purity while generating 10.23 Wh of energy per gram of lithium. Our investigation revealed that using atomic layer deposition improved the electrode's uniformity, stability, and electrocatalytic activity. After 2000 cycles determined by cyclic voltammetry, the electrode preserved its stability.

Atomic-Scale Tracking Topological Phase Transition Dynamics of Polar Vortex-Antivortex Pairs.

Non-trivial topological structures, such as vortex-antivortex (V-AV) pairs, have garnered significant attention in the field of condensed matter physics. However, the detailed topological phase transition dynamics of V-AV pairs, encompassing behaviors like self-annihilation, motion, and dissociation, have remained elusive in real space. Here, we employ polar V-AV pairs as a model system and track their transition pathways with atomic-scale resolution, facilitated by in situ (scanning) transmission electron microscopy and phase field simulations. Our investigation reveals that polar vortices and antivortices can stably coexist as bound pairs at room temperature, and their polarization decreases with heating. No dissociation behavior is observed between the V-AV phase at room temperature and the paraelectric phase at high temperature. However, the application of electric fields can promote the approach of vortex and antivortex cores, ultimately leading to their annihilation near the interface. Revealing the transition process mediated by polar V-AV pairs at the atomic scale, particularly the role of polar antivortex, provides us new insights into understanding the topological phases of matter and their topological phase transitions. Moreover, the detailed exploration of the dynamics of polar V-AV pairs under thermal and electrical fields lays a solid foundation for their potential applications in electronic devices. This article is protected by copyright. All rights reserved.

Thermal conductivity of epoxy resin films doped with a polythiophene/graphene complex or aluminum nitride

AbstractPolymer composites with thermal conductivity are attractive for heat dissipation in electronic devices. We prepared epoxy resin‐based composite films filled with polythiophene [poly(3‐hexylthiophene‐2,5‐diyl)] (P3HT)/graphene complex or aluminum nitride (AlN). The composite films were characterized by electron microscopic observation, thermogravimetric analysis, and thermal conductivity measurements. The addition of a small content of P3HT/graphene complex (<1 wt%) increased both the out‐of‐plane and in‐plane thermal conductivities of the epoxy resin. The addition of AlN also increased thermal conductivity, but ≥40 wt% was required to obtain thermal conductivity comparable with that of an epoxy resin film doped with 0.9 wt% P3HT/graphene complex. The present results illustrate the potential of P3HT/graphene complexes as fillers for improving the thermal conductivity of epoxy resins without affecting their insulating properties.Highlights Polythiophene/graphene fillers increased epoxy resin films' thermal conductivity. To raise the thermal conductivity of epoxy resin films high AlN content was needed. In‐plane/out‐of‐plane epoxy resin films' thermal conductivities were evaluated.

Evaluation of Blood Transfusion Request form: The Experience in a Tertiary Health Facility in Jos, Nigeria

Background: There is a thin line between a safe blood transfusion and transfusion-related fatality hence the need to be diligent in every aspect of the blood transfusion process. Appropriate and complete documentation on a blood transfusion request form is one of the most important preanalytic activities serving as a communication tool between the clinician and the blood transfusion laboratory personnel. Aims: To evaluate compliance with appropriate and complete documentation of information on our blood transfusion request forms for a reliable preanalytic process towards an efficient blood transfusion service. Study Design: It is a retrospective study. Place and Duration of Study: Blood Bank of the Jos University Teaching Hospital between January to December 2023. Methodology: Six thousand, three hundred and sixty (6360) blood transfusion request forms from the Jos University Teaching Hospital Blood bank were evaluated for complete or incomplete documentation retrospectively and results were presented in frequencies and percentages. Results: There was 100% compliance in filling in the patients' surnames and other names as well as the laboratory number and blood groups of the patients while only 4779 (75.14%) filled in the patients' ages with 1416(22.26%) using the prefix of adult(ad) while 165(2.59%) fail to document the patients' age. There were 2829 (44.48%) males with 3522 (55.38%) females while no sex was indicated in 9 of the reviewed forms. Obstetrics history has the least cumulated documented response of 0.38% while a significant 1008 (15.85%) did not indicate either blood grouping or blood grouping with cross-match request. Conclusion: Appropriate and complete documentation of information on blood transfusion request forms is a problem among clinicians and will require continuous education on its importance, periodic auditing, provision of electronic data system and attitudinal change for a better blood transfusion compatibility service.

Integrating clinical research into electronic health record (EHR) workflows to support a learning health system

Abstract Objective Integrating clinical research into routine clinical care workflows within electronic health record systems (EHRs) can be challenging, expensive, and labor-intensive. This case study presents a large-scale clinical research project conducted entirely within a commercial EHR during the COVID-19 pandemic. Case Report The UCSD and UCSDH COVID-19 NeutraliZing Antibody Project (ZAP) aimed to evaluate antibody levels to SARS-CoV-2 virus in a large population at an academic medical center and examine the association between antibody levels and subsequent infection diagnosis. Results The project rapidly and successfully enrolled and consented over two thousand participants, integrating the research trial with standing COVID-19 testing operations, staff, lab, and mobile applications. EHR-integration increased enrollment, ease of scheduling, survey distribution and return of research results at a low cost by utilizing existing resources. Conclusion The case study highlights the potential benefits of EHR-integrated clinical research, expanding their reach across multiple health systems and facilitating rapid learning during a global health crisis.

Synergetic Improvement of Flexoelectric Coefficient in liquid Crystal Embedded Flexible PVDF Polymer Composite for Energy Harvesting Applications.

Flexoelectricity is the universal electric polarization of dielectrics upon exertion of a non-uniform strain gradient. With the advancement of nano-technology and miniaturization of electronic devices, flexoelectricity holds the promise to address the power requirements for such device operation. The direct flexoelectric effect in liquid crystal (LC) embedded Poly(vinylidene fluoride) (PVDF) polymer films is examined for the first time by the application of external strain on the films. Physical characterizations such as DSC, dielectric spectroscopy, XRD and FESEM are carried out to study the composite films' intrinsic and extrinsic properties like dielectric, crystallinity and morphologies. The value of the flexoelectric coefficient (μ12) increases with the concentration of LC incorporation. At 3wt%, μ12 attains a maximum value of 68 nC/m, which is more than a three-fold increase compared to that of the pure PVDF film. The role of Maxwell Wagner Sillars (MWS) polarization in determining flexoelectric polarization in polymer composites is also discussed. Moreover, the influence of the microstructure and domain size formation in determining the flexoelectric response are discussed in detail to infer the behaviour of the flexoelectric coefficients of the films. Potential device applications based on this phenomenon have been proposed for future research in sensing and actuation. This article is protected by copyright. All rights reserved.

MXene-modified lemon peel-based composite phase change material with excellent photo-thermal conversion efficiency, thermal storage capacity and thermal conductivity for thermal management of electronic components

The preparation of multifunctional composite phase change materials using green technology to achieve an efficient energy storage and conversion remains an issue of concern. In this paper, a lemon peel-based porous carbon (LPC) composite phase change material (CPCM) was prepared by using polyethylene glycol (PEG) 6000 as a phase change medium and MXene nanosheet-modified carbonized lemon peel as a support carrier. MXene nanosheets were bonded to a lemon peel-based porous carbon skeleton to construct an excellent continuous three-dimensional thermally conductive grid system. What makes it noteworthy is that the presence of MXene nanosheets substantially improves the thermal conductivity (0.66 W/mK) and photo-thermal conversion efficiency (θ = 96.4 %) of MXene-modified lemon peel-based porous carbon/polyethylene glycol composite phase change materials (PEG/LPC@M). It is noteworthy that PEG/LPC@M has remarkable thermal stability and still has high enthalpy after 100 cycles, which further proves the recyclability of PEG/LPC@M and PEG/LPC@M embodies great potential in the field of thermal management of electronic components. In conclusion, a novel multifunctional CPCM was prepared by a simple and green process method in this study, which provides a new idea for waste recycling and reuse, and also has a wide range of applications in thermal management of electronic devices.

A Self‐Powered Dual Ratchet Angle Sensing System for Digital Twins and Smart Healthcare

AbstractIn the swiftly progressing landscape of wearable electronics and the Internet of Things (IoTs), there is a burgeoning demand for devices that are lightweight, cost‐effective, and self‐powered. In this study, a self‐powered bidirectional knee joint motion monitoring system is introduced, leveraging a dual ratchet sensing (DRS) system fabricated using 3D printing technology. This approach offers substantial economic and portability benefits. The DRS system is engineered to harness the negative work generated from knee joint movements to power commercial electronic devices, obviating the need for additional metabolic energy from the human body. By synergizing the DRS with virtual reality technology, it becomes feasible to monitor knee joint movements in real‐time with remarkable accuracy, presenting a novel avenue for the integration of digital twin technology. Through the amalgamation of convolutional neural network machine learning algorithms with Bayesian optimization techniques, the DRS system can discern up to 97% of knee joint movements, paving the way for innovative applications in smart rehabilitation and healthcare.

Photovoltaic induced self-powered gas sensor based on 2D MoS2 incorporated NbSe2 nanorods heterostructure for NH3 gas sensing at room temperature

Two-dimensional (2D) transition metal dichalcogenides (TMDs) have attracted significant attention for their optical and gas-sensing applications due to their exceptional sensitivity. Reliable selectivity and low power consumption are two major requirements for photodetector and gas sensor applications in next-generation electronic devices and the Internet of Things. Self-powered sensors (especially photovoltaic gas sensors) can solve these problems. In this study, for the first time, we report 2D TMDs (NbSe2-MoS2 hybrid) on a SiO2/Si substrate to fabricate photovoltaic self-powered gas sensors. The gas sensors are operated by the photovoltaic effect of the NbSe2-MoS2 nanostructure, which is prepared using the liquid phase exfoliation process. Initially, it was revealed that the present hybrid material exhibits photovoltaic properties under light illumination, with a circuit current of 0.25 µA and a circuit voltage of 34 mV. The NbSe2-MoS2 nanostructure characteristics were then used for NH3 gas sensing at different concentrations, and the gas sensing response was detected from low (8.8 % at 10 ppm) to high (28.8 % at 500 ppm) concentrations. The built-in electric field occurred between the NbSe2-MoS2 junction and eventually operated as a driving force for NbSe2-MoS2 gas sensing without an external bias voltage. The physisorption of gas molecules on their surface prompts a charge-transfer mechanism that improves the gas sensor response. The combined outcome of NbSe2-MoS2 heterostructures could pave way to next-generation gas sensing device fabrications.

Polar Bloch points in strained ferroelectric films

Topological domain structures have drawn great attention as they have potential applications in future electronic devices. As an important concept linking the quantum and classical magnetism, a magnetic Bloch point, predicted in 1960s but not observed directly so far, is a singular point around which magnetization vectors orient to nearly all directions. Here we show polar Bloch points in tensile-strained ultrathin ferroelectric PbTiO3 films, which are alternatively visualized by phase-field simulations and aberration-corrected scanning transmission electron microscopic imaging. The phase-field simulations indicate local steady-state negative capacitance around the Bloch points. The observation of polar Bloch points and their emergent properties consequently implies novel applications in future integrated circuits and low power electronic devices.

Permeable Bioelectronics toward Biointegrated Systems.

Bioelectronics integrates electronics with biological organs, sustaining the natural functions of the organs. Organs dynamically interact with the external environment, managing internal equilibrium and responding to external stimuli. These interactions are crucial for maintaining homeostasis. Additionally, biological organs possess a soft and stretchable nature; encountering objects with differing properties can disrupt their function. Therefore, when electronic devices come into contact with biological objects, the permeability of these devices, enabling interactions and substance exchanges with the external environment, and the mechanical compliance are crucial for maintaining the inherent functionality of biological organs. This review discusses recent advancements in soft and permeable bioelectronics, emphasizing materials, structures, and a wide range of applications. The review also addresses current challenges and potential solutions, providing insights into the integration of electronics with biological organs.

Buying and selling activity of online game accounts containing virtual goods that are sold on an online marketplace

With so many online game players today, various problems arise. There are so many online game players today who carry out buying and selling activities on online game accounts containing virtual objects that are widely available in various marketplaces in Indonesia. However, in these activities, the buyer often suffers losses such as the account being hacked or re-accessed by the seller. For this reason, it is necessary to have the validity of buying and selling online game accounts containing virtual objects, and how to protect the law against the buyer who purchases an account containing virtual objects. This writing uses a normative juridical approach, namely by reviewing the provisions in the Civil Code regarding the validity of buying and selling and most importantly the Law No. 19 of 2016 regarding buying and selling in electronic systems, to then be analyzed descriptively qualitatively, namely by first providing a detailed description and analysis , systematic, and comprehensive regarding the laws and regulations, norms in various countries and legal theories which are then applied to the problems studied. The results of the study show that firstly, the activity of buying and selling online game accounts which contain virtual objects based on the Law No. 19 of 2016 is legal if the organizer does not prohibit the existence of buying and selling activities by third parties. Second, legal protection for buyers who purchase online game accounts containing virtual objects based on Article 30 of the Law No. 19 of 2016 is that the seller is prohibited from re-accessing accounts that have been sold, while based on Article 49 paragraph (3) Regulation No. 71 Of 2019 the buyer has the right to get a return of goods and money if there is a difference between the goods purchased and the goods received.

LEGAL PROTECTION FOR CREDITORS AGAINST DEBTORS IN DEFAULT PEER TO PEER LENDING AGREEMENT

The purpose of this research is to determine the validity of the Civil Code perspective on peer to peer lending agreements and to determine the factors that hinder creditor returns and the role of the OJK in protecting creditors. This research uses normative juridical methods, namely obtained from library materials and related literature such as books, journals and so on. Peer to peer lending agreements made using an electronic system are basically valid because they fulfill the 4 requirements in Article 1320 of the Civil Code. There are several factors that hinder returns and creditors, namely, individual characteristics, business, credit, internal and external factors. OJK's role in protecting lenders in peer to peer lending agreements, OJK provides sanctions to organizers for losses from fund owners due to errors and negligence in cases where there is a lack of transparency, not acting fairly, not being reliable, not maintaining data confidentiality and security.

Low-complexity continuous-variable quantum key distribution with true local oscillator using pilot-assisted frequency locking

In the domain of continuous variable quantum key distribution (CV-QKD), a significant challenge arises in achieving precise frequency synchronization, an issue commonly termed as frequency locking. This involves matching the optical frequencies of both the quantum signal laser and the local oscillator laser for accurate symbol demodulation during the exchange of quantum keys. As such, implementations today still grapple with maintaining precise synchronization between sender and receiver frequencies, occasionally hindering the efficiency and reliability of the information exchange. Addressing this challenge, we present and empirically validate a novel approach to CV-QKD by incorporating a pilot tone-assisted frequency locking algorithm to enhance stability when using a locally generated local oscillator (LLO) at the receiver. The proposed design leverages software-based optimization techniques, thereby eliminating the need for high-speed electronic stabilization devices and achieving efficient performance at typical repetition rates. Specifically, the introduction of the pilot tone algorithm allows us to effectively mitigate phase fluctuations and preserve the integrity of the quantum signals during transmission without resorting to time-multiplexed reference pulses or fast-locking electronics in the lasers. Our results suggest the potential for achieving secure key rates of up to 1 Mb/s over a 50 km single-mode fiber when using these techniques, offering promising insights into the feasibility of high-rate, low-complexity CV-QKD implementations under realistic conditions.

Electronic prescription systems in Greece: a large-scale survey of healthcare professionals’ perceptions

BackgroundThe national e-prescription system in Greece is one of the most important achievements in the e-health sector. Healthcare professionals’ feedback is essential to ensure the introduced system tends to their needs and reduces their everyday workload. The number of surveys collecting the users’ views is limited, while the existing studies include only a small number of participants.MethodsIn this study, healthcare professionals’ perceptions on e-prescription are explored. For this, a questionnaire was distributed online, containing closed- and open-ended questions aiming to address strengths and identify drawbacks in e-prescription. Answers were collected from primary health care physicians, specialized medical doctors and pharmacists.ResultsIn total, 430 answers were collected (129 from primary health care physicians, 164 responses from specialized medical doctors and 137 pharmacists). Analysis of the collected answers reveals that the views of the three groups of healthcare professionals mostly converge. The positive impact e-prescribing systems have on the overall prescribing procedure in preventing errors and providing automation is commented. Among gaps identified and proposed improvements, health care professionals note the need for access to information on adverse drug reactions, side effects, drug-to-drug interactions and allergies. Flexible interaction with Therapeutic Prescription Protocols is desired to ameliorate monitoring and decision-making, while drug dosing features, and simplified procedures for copying, repeating, canceling a prescription, are perceived as useful to incorporate.ConclusionsCollecting healthcare professionals’ feedback is important, as their views can be transcribed to system requirements, to further promote e-prescribing and improve the provided health care services by facilitating decision making through safer and more efficient e-prescription. Introduction of the identified improvements can simplify the everyday workflow of healthcare professionals. To the best of our knowledge, a survey with more than 400 answered questionnaires on the use of e-prescription systems by healthcare professionals has never been conducted in Greece before.

“In Bitcoin We Trust": An Anthropological Approach to Bitcoin as Algorithmic Utopia

The aim of this paper is to contextualize briefly the emergence and development of Bitcoin as well as to offer an anthropological analysis of one such "algorithmic utopia" known as Bitcoin. Bitcoin was officially "born" in 2009. Its foundation was laid by the so-called white paper titled "Bitcoin: A Peer-to-Peer Electronic Cash System" (2008), authored by Satoshi Nakamoto, a pseudonym for an individual or a group of individuals. In essence, the intention of its creator (or creators) was to solve the technical problem of so-called double-spending of money, aiming to avoid reliance on a third party or institution (such as a bank) and the consequent loss of privacy for its users, with the help of an algorithm called blockchain. Although Bitcoin can be viewed in continuity with movements such as crypto-anarchism and cypherpunk, whose roots trace back to the 1980s of the twentieth century, and although it is not the first cryptocurrency nor the first alternative to fiat money, Bitcoin is indeed the first cryptocurrency to have attracted broader attention in both public and academic discourse. This paper will shed light on the context in which Bitcoin was born and popularized, and will endeavor to defend the assumption that the popular imagination behind the Bitcoin currency is technoutopian. Finally, this paper will seek to demonstrate that the algorithm at the very core of Bitcoin is perceived not only as the fulfillment of an Enlightenment dream of a method itself as a non-cultural and supra-historical guarantor of objectivity (as the one) removed from politics, economy and ideology but also as a democratization method applicable to them all. Apart from the mentioned above, the paper concludes that Bitcoin is seen as the fulfillment of a modernist dream of efficient, formal, predictable, depersonalized bureaucracies in the context of the diminished legitimacy of centralized, hierarchically structured, sluggish, fallible, and abuse-prone economic and state institutions. The focus of trust shifts to technology: to an algorithm seen as self-regulating, efficient, free from ideology, subjective interests, and potential abuse, almost divinely infallible, decentralized, and democratic system that provides a group of individuals not only with the necessary tools to achieve their freedom and privacy, deprived from control and regulations, but also as a tool for reforming the political and economic system.

LEGAL CONSEQUENCES OF NOT REMOVING REGISTERED FIDUCIARY GUARANTEES FROM THE ONLINE SYSTEM IN BALI

Fiduciary guarantees are material guarantees that are most widely used by banks. Fiduciary guarantees have been used by the Indonesian people since the Dutch colonial era. Based on the Circular Letter of the Directorate General of AHU Number AHU-06.OT.03.01 of 2013 concerning the Implementation of the Electronic Fiduciary Registration Administration System, registration of Fiduciary guarantees is no longer carried out at the Fiduciary registration office but is registered on the official website, namely https://Fidusia.ahu .go.id The implementation of the elimination of Fiduciary guarantees registered in the online system is the obligation of the Fiduciary recipients, but in practice there are still Fiduciary recipients who do not fulfill their obligations to notify the removal of Fiduciary guarantees after the Fiduciary giver pays off their debts. There is no sanction that regulates if the Fiduciary recipient does not notify the cancellation of the Fiduciary guarantee which results in this obligation being not adhered to. The method used is the method of writing empirical law. The results that can be concluded in this study are that if the Fiduciary recipient does not notify the deletion of the Fiduciary guarantee, then the Fiduciary guarantee concerned cannot be re-registered.