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538 Results Found

  • Article
  • Open Access
5 Citations
8,844 Views
10 Pages

High Performance Receiver Design for RX Carrier Aggregation

  • Jusung Kim,
  • Bon-Hyun Ku,
  • Sanghun Lee,
  • Sungchan Kim and
  • Keunkwan Ryu

Carrier aggregation is one of the key features to increase the data rate given a scarce bandwidth spectrum. This paper describes the design of a high performance receiver suitable for carrier aggregation in LTE-Advanced and future 5 G standards. The...

  • Article
  • Open Access
49 Citations
6,115 Views
18 Pages

An Improved Radio Resource Management with Carrier Aggregation in LTE Advanced

  • Hasibur Rashid Chayon,
  • Kaharudin Dimyati,
  • Harikrishnan Ramiah and
  • Ahmed Wasif Reza

14 April 2017

Long term evolution-advanced (LTE-A) system introduces carrier aggregation (CA) technique to improve the user throughput by aggregating multiple component carriers (CCs). Previous research works related to downlink radio resource allocation with carr...

  • Article
  • Open Access
5 Citations
4,123 Views
25 Pages

19 March 2024

Carrier aggregation (CA) was introduced in mobile communication systems in response to the demand for higher network capacity. CA was conceived as a technique to achieve higher data rates by aggregating multiple blocks of spectrum from the same or di...

  • Article
  • Open Access
4 Citations
5,888 Views
30 Pages

A digital front-end decimation chain based on both Farrow interpolator for fractional sample-rate conversion and a digital mixer is proposed in order to comply with the long-term evolution standards in radio receivers with ten frequency modes. Design...

(This article belongs to the Section Circuit and Signal Processing)
  • Article
  • Open Access
4 Citations
1,970 Views
28 Pages

Channel Estimation in UAV-Assisted OFDM Systems by Leveraging LoS and Echo Sensing with Carrier Aggregation

  • Zhuolei Chen,
  • Wenbin Wu,
  • Renshu Wang,
  • Manshu Liang and ,
  • Weihao Zhang,
  • Shuning Yao,
  • Wenquan Hu and
  • Chaojin Qing
  • + 3 authors+ 0 author

16 October 2025

Unmanned aerial vehicle (UAV)-assisted wireless communication systems often employ the carrier aggregation (CA) technique to alleviate the issue of insufficient bandwidth. However, in high-mobility UAV communication scenarios, the dynamic channel cha...

(This article belongs to the Section Communications)
  • Communication
  • Open Access
4 Citations
2,730 Views
9 Pages

14 October 2024

This paper presents a single-input multiple-output (SIMO) cascode low-noise amplifier with inductive degeneration for inter- and intra-band carrier aggregation. The proposed low-noise amplifier has two output ports for flexible operation in carrier a...

(This article belongs to the Section Sensor Networks)
  • Article
  • Open Access
8 Citations
2,702 Views
19 Pages

24 September 2023

Carrier aggregation (CA) technology in the Fifth-Generation (5G) network can be considered as a major feature for high-rate data services, which can be combined with the concept of 5G in unlicensed band (5G-U) for data offloading to further enhance t...

(This article belongs to the Section Electrical, Electronics and Communications Engineering)
  • Article
  • Open Access
3 Citations
5,224 Views
13 Pages

5 January 2018

This paper focuses on the network capacity maximization problem through joint cell association and user scheduling with multiple carrier aggregation (CA) in the heterogeneous networks (HetNets). For the downlink transmission, the proposed joint maxim...

(This article belongs to the Section Information and Communications Technology)
  • Article
  • Open Access
1 Citations
2,048 Views
18 Pages

20 September 2024

Automatic and blind parameter estimation based on the inherent features of wireless signals is a major research area due to the fact that these techniques lead to the simplification of receivers, especially in terms of coarse synchronization, and mor...

  • Article
  • Open Access
3 Citations
4,440 Views
21 Pages

17 September 2015

In spectrum aggregation (SA), two or more component carriers (CCs) of different bandwidths in different bands can be aggregated to support a wider transmission bandwidth. The scheduling delay is the most important design constraint for the broadband...

(This article belongs to the Section Sensor Networks)
  • Article
  • Open Access
3 Citations
2,283 Views
15 Pages

Self-Assembly Behavior, Aggregation Structure, and the Charge Carrier Transport Properties of S-Heterocyclic Annulated Perylene Diimide Derivatives

  • Haijie Ben,
  • Gaojie Yan,
  • Yulin Wang,
  • Huiming Zeng and ,
  • Yuechao Wu,
  • Feng Lin,
  • Junhua Zhao,
  • Wanglong Du,
  • Shaojie Zhang and
  • Liang Lv
  • + 9 authors+ 4 authors

25 April 2024

The construction of high-performance n-type semiconductors is crucial for the advancement of organic electronics. As an attractive n-type semiconductor, molecular systems based on perylene diimide derivatives (PDIs) have been extensively investigated...

(This article belongs to the Special Issue Feature Papers in Photochemistry and Photocatalysis)
  • Article
  • Open Access
7 Citations
3,242 Views
13 Pages

Background/Objectives: This study aimed to design and evaluate Chol-PEG2000 micelles and Chol-PEG500 vesicles as drug delivery system (DDS) carriers and inhibitors of amyloid-β (Aβ) aggregation, a key factor in Alzheimer’s disease (AD...

(This article belongs to the Section Drug Delivery and Controlled Release)
  • Article
  • Open Access
7 Citations
3,954 Views
15 Pages

6 December 2020

In medical research the visualization of drug carrier accumulation and release of the loaded drugs in vivo is an important field. In this work, two protein-stabilized gold nanoclusters (Au NCs) as effective fluorescent reporters (FRs) were investigat...

(This article belongs to the Section Inorganic Crystalline Materials)
  • Article
  • Open Access
1 Citations
988 Views
20 Pages

6 August 2025

Improving charge transport in the aggregated state of nanocomposites is challenging due to the large number of defects present at grain boundaries. To enhance the charge transfer and photogenerated carrier extraction of MnOx nanofibers, a MnOx/GO (gr...

(This article belongs to the Section Surface Engineering for Energy Harvesting, Conversion, and Storage)
  • Article
  • Open Access
4 Citations
3,940 Views
14 Pages

21 November 2022

Molecules with donor–spacer–acceptor configuration have been developed rapidly given their peculiar properties. How to utilize intermolecular interactions and charge transfers for solution-processed organic light-emitting diodes (OLEDs) g...

(This article belongs to the Special Issue Aggregation-Induced Emission: From Fundamental to Application)
  • Article
  • Open Access
1 Citations
2,343 Views
21 Pages

19 December 2022

Carrier aggregation (CA) is considered as a key enabling technology to provide higher rates for users in LTE/5G networks. However, the increased transmission rate is accompanied by higher energy consumption. The existing CA energy efficiency resource...

  • Article
  • Open Access
26 Citations
4,563 Views
12 Pages

3 March 2020

Stimuli-responsive functional gels have shown significant potential for application in biosensing and drug release systems. In this study, aggregation-induced emission luminogen (AIEgen)-functionalized, diselenide-crosslinked polymer gels were synthe...

(This article belongs to the Section Polymer Chemistry)
  • Feature Paper
  • Article
  • Open Access
10 Citations
8,514 Views
19 Pages

The next evolution in cellular communications will not only improve upon the performance of previous generations, but also represent an unparalleled expansion in the number of services and use cases. One of the foundations for this evolution is the d...

(This article belongs to the Special Issue Hardware and Architecture)
  • Article
  • Open Access
6 Citations
3,737 Views
17 Pages

Modeling for High-Frequency Spurious Responses in Incredible High-Performance Surface Acoustic Wave Devices

  • Guanzhen Jiang,
  • Yao Shuai,
  • Zijie Wei,
  • Jialin Yao and ,
  • Wenbo Luo,
  • Xinqiang Pan,
  • Chuangui Wu and
  • Wanli Zhang
  • + 3 authors+ 0 author

15 January 2024

To ensure that surface acoustic wave (SAW) filters fulfill the requirements of Carrier Aggregation (CA) applications, the development of modeling tools that can forecast and simulate high-frequency spurious responses has been necessary. This paper pr...

  • Review
  • Open Access
118 Citations
15,771 Views
39 Pages

Issues, Challenges, and Research Trends in Spectrum Management: A Comprehensive Overview and New Vision for Designing 6G Networks

  • Faizan Qamar,
  • Maraj Uddin Ahmed Siddiqui,
  • MHD Nour Hindia,
  • Rosilah Hassan and
  • Quang Ngoc Nguyen

1 September 2020

With an extensive growth in user demand for high throughput, large capacity, and low latency, the ongoing deployment of Fifth-Generation (5G) systems is continuously exposing the inherent limitations of the system, as compared with its original premi...

(This article belongs to the Section Microwave and Wireless Communications)
  • Article
  • Open Access
2 Citations
1,335 Views
23 Pages

In2S3/C3N4 Nanocomposite and Its Photoelectric Properties in the Broadband Light Spectrum Range

  • Xingfa Ma,
  • Xintao Zhang,
  • Mingjun Gao,
  • Ruifen Hu and ,
  • You Wang and
  • Guang Li
  • + 1 author+ 0 author

14 June 2025

To extend the spectral utilisation of In2S3, an In2S3/C3N4 nanocomposite was prepared. The effects of different sulphur sources, electrodes, and bias voltages on the optoelectronic performance were examined. Photoelectric properties in response to li...

  • Article
  • Open Access
20 Citations
3,300 Views
21 Pages

16 March 2023

The contradiction between the scarcity of natural resources and the demand for construction materials has given rise to the application of recycled aggregates. Microbial self-healing concrete (SHC) is a clean and smart material, and its carrier has a...

  • Article
  • Open Access
29 Citations
6,928 Views
22 Pages

hiPSC-Derived Cardiomyocyte Model of LQT2 Syndrome Derived from Asymptomatic and Symptomatic Mutation Carriers Reproduces Clinical Differences in Aggregates but Not in Single Cells

  • Disheet Shah,
  • Chandra Prajapati,
  • Kirsi Penttinen,
  • Reeja Maria Cherian and ,
  • Jussi T. Koivumäki,
  • Anna Alexanova,
  • Jari Hyttinen and
  • Katriina Aalto-Setälä
  • + 3 authors+ 0 author

7 May 2020

Mutations in the HERG gene encoding the potassium ion channel HERG, represent one of the most frequent causes of long QT syndrome type-2 (LQT2). The same genetic mutation frequently presents different clinical phenotypes in the family. Our study aime...

(This article belongs to the Special Issue Stem Cell-based Therapy and Disease Modeling)
  • Article
  • Open Access
1 Citations
1,549 Views
27 Pages

To exploit the near-infrared (NIR) light of MoO3, the MoVOx mixed oxide was synthesized using a one-pot approach. The effects of different electrodes, V doping, and bias on the optoelectronic properties were investigated. The photoelectric responses...

(This article belongs to the Special Issue Advanced Inorganic Semiconductor Materials, 3rd Edition)
  • Article
  • Open Access
8 Citations
4,731 Views
19 Pages

Effective Digital Predistortion (DPD) on a Broadband Millimeter-Wave GaN Power Amplifier Using LTE 64-QAM Waveforms

  • Gokul Somasundaram,
  • Jill C. Mayeda,
  • Clint Sweeney,
  • Donald Y. C. Lie and
  • Jerry Lopez

We demonstrate in this work effective linearization on a millimeter-wave (mm-Wave) broadband monolithic gallium nitride (GaN) power amplifier (PA) using digital predistortion (DPD). The PA used is a two-stage common-source (CS)/2-stack PA that operat...

(This article belongs to the Section Microwave and Wireless Communications)
  • Review
  • Open Access
13 Citations
6,188 Views
28 Pages

Synthesis and Optoelectronic Properties of Perylene Diimide-Based Liquid Crystals

  • Shiyi Qiao,
  • Ruijuan Liao,
  • Mingsi Xie,
  • Xiaoli Song and ,
  • Ao Zhang,
  • Yi Fang,
  • Chunxiu Zhang and
  • Haifeng Yu
  • + 3 authors+ 0 author

9 February 2025

Perylene diimide (PDI), initially synthesized and explored as an organic dye, has since gained significant recognition for its outstanding optical and electronic properties. Early research primarily focused on its vibrant coloration; however, the res...

(This article belongs to the Section Molecular Structure)
  • Article
  • Open Access
7 Citations
4,229 Views
23 Pages

22 March 2023

Mobile networks of the fifth generation have stringent requirements for data throughput, latency and reliability. Dual or multi-connectivity is implemented to meet the mobility requirements for certain essential 5G use cases, and this ensures the use...

  • Article
  • Open Access
12 Citations
4,067 Views
12 Pages

Tauopathy is the aggregation phenomenon of tau proteins and associated with neurodegenerative diseases. It metastasizes via the transfer of tau aggregates to adjacent neuron cells; however, the mechanism has not yet been fully understood. Moreover, i...

(This article belongs to the Section Drug Delivery and Controlled Release)
  • Article
  • Open Access
10 Citations
5,134 Views
13 Pages

16 May 2016

The current method used for calculating societal aggregated exergy efficiencies is reviewed. Cooling is introduced as an end-use category; conversion efficiencies for heating processes are obtained for each energy carrier; and electricity shares per...

  • Article
  • Open Access
2 Citations
2,151 Views
10 Pages

Lidosomes: Innovative Vesicular Systems Prepared from Lidocaine Surfadrug

  • Martina Romeo,
  • Elisabetta Mazzotta,
  • Ida Daniela Perrotta and
  • Rita Muzzalupo

Lidocaine is a local anaesthetic drug with an amphiphilic structure able to self-associate, under certain conditions, in molecular aggregates playing the role of both carrier and drug. The aim of this study was to determine the optimal conditions for...

  • Article
  • Open Access
23 Citations
6,901 Views
10 Pages

The Effect of Polystyrene on the Carrier Flotation of Fine Smithsonite

  • Xiangfeng Zhang,
  • Yuehua Hu,
  • Wei Sun and
  • Longhua Xu

29 March 2017

Carrier flotation is a common technique used to improve flotation recovery of ultrafine ores. In this study, we used coarse polystyrene as the carrier material to enhance flotation recovery of fine smithsonite (ZnCO3) particles. Sodium oleate was use...

  • Article
  • Open Access
2 Citations
3,609 Views
11 Pages

Dextran-Cholesterol Carrier Encapsulated Efficient Photosensitizer for the Photodynamic Killing of Cancer Cells

  • Biru Wu,
  • Zhuoheng Gan,
  • Shengchang Tao,
  • Qiang Wang and ,
  • Yuchen Song,
  • Hua Zhong and
  • Fang Hu
  • + 2 authors+ 0 author

Selective photodynamic therapy (PDT) for cancer cells is more efficient and much safer. Most selective PDTs are realized by antigene-biomarker or peptide-biomarker interactions. Here, we modified dextran with hydrophobic cholesterol as a photosensiti...

(This article belongs to the Special Issue Aggregation-Induced Emission: From Fundamental to Application)
  • Article
  • Open Access
24 Citations
4,284 Views
12 Pages

9 February 2020

The interfacial transition zone (ITZ) around aggregates in concrete is a weak area with higher porosity than the matrix; it breaks easily under stress and is not conducive to the durability of concrete. However, the ITZ in concrete is full of calcium...

  • Article
  • Open Access
7 Citations
9,975 Views
13 Pages

Expression of FMRpolyG in Peripheral Blood Mononuclear Cells of Women with Fragile X Mental Retardation 1 Gene Premutation

  • Xuan Phuoc Nguyen,
  • Adriana Vilkaite,
  • Birgitta Messmer,
  • Jens E. Dietrich and ,
  • Katrin Hinderhofer,
  • Knut Schäkel,
  • Thomas Strowitzki and
  • Julia Rehnitz
  • + 3 authors+ 0 author

1 March 2022

Fragile X-associated primary ovarian insufficiency (FXPOI) is characterized by oligo/amenorrhea and hypergonadotropic hypogonadism and is caused by the expansion of the CGG repeat in the 5′UTR of Fragile X Mental Retardation 1 (FMR1). Approxima...

(This article belongs to the Special Issue Feature Papers: Molecular Genetics and Genomics)
  • Article
  • Open Access
643 Views
15 Pages

22 July 2026

This study was conducted to determine the optimal mineralization enhancement period for recycled aggregates, and to elucidate the mechanisms underlying the mineralization enhancement of recycled aggregates and the self-healing of concrete cracks. Mic...

(This article belongs to the Section Building Materials, and Repair & Renovation)
  • Article
  • Open Access
24 Citations
8,498 Views
16 Pages

PEG-OligoRNA Hybridization of mRNA for Developing Sterically Stable Lipid Nanoparticles toward In Vivo Administration

  • Shota Kurimoto,
  • Naoto Yoshinaga,
  • Kazunori Igarashi,
  • Yu Matsumoto and ,
  • Horacio Cabral and
  • Satoshi Uchida
  • + 1 author+ 0 author

Lipid nanoparticles (LNPs) exhibit high potential as carriers of messenger RNA (mRNA). However, the arduous preparation process of mRNA-loaded LNPs remains a huge obstacle for their widespread clinical application. Herein, we tackled this issue by mR...

(This article belongs to the Special Issue Molecular Tools for Nucleic Acid Manipulation for Biological Intervention)
  • Article
  • Open Access
4 Citations
3,429 Views
11 Pages

Ethyl Hydroxyethyl Cellulose—A Biocompatible Polymer Carrier in Blood

  • Anja Eckelt,
  • Franziska Wichmann,
  • Franziska Bayer,
  • John Eckelt and ,
  • Jonathan Groß,
  • Till Opatz,
  • Kerstin Jurk,
  • Christoph Reinhardt and
  • Klytaimnistra Kiouptsi
  • + 4 authors+ 0 author

The biocompatibility of carrier nanomaterials in blood is largely hampered by their activating or inhibiting role on the clotting system, which in many cases prevents safe intravascular application. Here, we characterized an aqueous colloidal ethyl h...

(This article belongs to the Special Issue Recent Advances in Biological Functions of Platelet)
  • Article
  • Open Access
11 Citations
3,931 Views
11 Pages

Application of Citrus and Apple Fibers for Formulation of Quercetin/Fiber Aggregates: Impact of Quercetin Concentration

  • Ivana Buljeta,
  • Ina Ćorković,
  • Anita Pichler,
  • Josip Šimunović and
  • Mirela Kopjar

19 December 2022

Among flavonoids, quercetin has gained special attention due to its positive biological activities. Quercetin’s disadvantages, such as its hydrophobic nature, poor solubility, and permeability, could be overcome by complexation with different p...

(This article belongs to the Section Phytochemistry)
  • Article
  • Open Access
518 Views
27 Pages

15 July 2026

Traditional enzyme immobilization strategies often rely on chemical crosslinkers or solid carriers, thereby increasing processing complexity and potentially compromising catalytic efficiency. Here, we present a carrier-free approach for generating st...

(This article belongs to the Special Issue Design, Engineering, and Application of Enzyme Cascade Systems)
  • Article
  • Open Access
8 Citations
4,902 Views
17 Pages

Clofazimine (CLZ) is an effective antibiotic used against a wide spectrum of Gram-positive bacteria and leprosy. One of its main drawbacks is its poor solubility in water. Silica based materials are used as drug delivery carriers that can increase th...

(This article belongs to the Special Issue Advanced Photochemistry and Photobiology within Confining Chemical and Biological Hosts)
  • Article
  • Open Access
2 Citations
936 Views
22 Pages

Impact of the Addition of Disaccharides on the Encapsulation of Chokeberry Polyphenols on Rice and Pea Proteins

  • Mirela Kopjar,
  • Ivana Buljeta,
  • Dubravko Pichler,
  • Josipa Krezić and ,
  • Nela Nedić Tiban and
  • Anita Pichler
  • + 1 author+ 0 author

21 January 2026

Promising approach for the expansion of the functional food sector is combining various ingredients with potential health benefits. The aim of this study was to create protein aggregates by freeze-drying encapsulation. Rice or pea proteins were used...

(This article belongs to the Special Issue Food Chemistry and Bioactive Compounds in Relation to Health, 2nd Edition)
  • Article
  • Open Access
1 Citations
1,842 Views
18 Pages

Investigating the Formation and Molecular Solubilization Mechanism of Emodin Solid Dispersions by Molecular Dynamics Simulation

  • Jiaoyue Zhu,
  • Haiju Bai,
  • Shili Pan,
  • Wei Shen and ,
  • Jingying Li,
  • Xuehui Ding,
  • Lin Wang and
  • Wei Xu
  • + 3 authors+ 0 author

10 February 2025

The preparation of solid dispersions (SDs) of emodin (EMO) represents an effective strategy for enhancing its limited water solubility. However, there is a lack of effective strategies for carrier screening. The molecular mechanism underlying EMO-SDs...

(This article belongs to the Section Molecular Structure)
  • Article
  • Open Access
12 Citations
4,570 Views
11 Pages

Amorphous nanosuspensions (ANSs) enable rapid release and improved delivery of a poorly water-soluble drug; however, their preparation is challenging. Here, using hemoglobin (Hb) as a carrier, ANSs aggregated from paclitaxel (PTX)–Hb complexes...

(This article belongs to the Special Issue Novel Formulation Strategies for Enhancing Dissolution and/or Oral Bioavailability)
  • Article
  • Open Access
40 Citations
5,019 Views
15 Pages

15 September 2019

Metal-free porphyrin with good planarity is beneficial to π–π stack interactions, which promotes electron coupling and the separation and transfer of photogenerated carriers. It is necessary to develop metal-free porphyrin-based photocata...

  • Review
  • Open Access
82 Citations
13,938 Views
22 Pages

Nanostructured Lipid Carriers-Hydrogels System for Drug Delivery: Nanohybrid Technology Perspective

  • Sharifah Nurfadhlin Afifah Syed Azhar,
  • Siti Efliza Ashari,
  • Norhazlin Zainuddin and
  • Masriana Hassan

4 January 2022

Advanced hybrid component development in nanotechnology provides superior functionality in the application of scientific knowledge for the drug delivery industry. The purpose of this paper is to review important nanohybrid perspectives in drug delive...

(This article belongs to the Special Issue Preparation and Applications of Hydrogels)
  • Article
  • Open Access
17 Citations
4,115 Views
18 Pages

15 January 2021

Two different preparation methods, viz. incipient impregnation and mechanical mixing, have been used to prepare V-based oxygen carriers with different V loadings for chemical looping oxidative dehydrogenation of propane. The effect of the preparation...

(This article belongs to the Special Issue Chemical Looping for Catalysis)
  • Article
  • Open Access
8 Citations
2,053 Views
16 Pages

Delivery of Lutein by Using Modified Burdock Polysaccharide Aggregates: Preparation, Characterization, and In Vitro Release Properties

  • Chenchen Zhang,
  • Yan Zhang,
  • Jiangfeng Song,
  • Hongjuan Wang and ,
  • Caie Wu and
  • Ying Li
  • + 1 author+ 0 author

11 July 2024

Novel self-assembled aggregates of stearic acid (SA)-modified burdock polysaccharide (BP) for loading lutein were constructed, and the release and absorption properties of lutein in the aggregates in simulated gastrointestinal fluid were investigated...

(This article belongs to the Section Biobased and Biodegradable Polymers)
  • Article
  • Open Access
1 Citations
1,997 Views
16 Pages

10 September 2025

Power amplifier behavioral modeling is an important technique for efficient and accurate digital predistortion, but conventional models fail to generalize when applied across varying carrier frequencies. This work addresses the carrier-frequency gene...

(This article belongs to the Section Electrical, Electronics and Communications Engineering)
  • Article
  • Open Access
13 Citations
15,734 Views
16 Pages

4 March 2009

Embedding data-aggregation capabilities into sensor nodes of wireless networks could save energy by reducing redundant data flow transmissions. Existing research describes the construction of data aggregation trees to maximize data aggregation times...

(This article belongs to the Special Issue Wireless Sensor Technologies and Applications)
  • Review
  • Open Access
19 Citations
9,544 Views
19 Pages

Biomedical Application of Low Molecular Weight Heparin/Protamine Nano/Micro Particles as Cell- and Growth Factor-Carriers and Coating Matrix

  • Masayuki Ishihara,
  • Satoko Kishimoto,
  • Makoto Takikawa,
  • Hidemi Hattori and ,
  • Shingo Nakamura and
  • Masafumi Shimizu
  • + 1 author+ 0 author

22 May 2015

Low molecular weight heparin (LMWH)/protamine (P) nano/micro particles (N/MPs) (LMWH/P N/MPs) were applied as carriers for heparin-binding growth factors (GFs) and for adhesive cells including adipose-derived stromal cells (ADSCs) and bone marrow-der...

(This article belongs to the Special Issue Biomaterials for Tissue Engineering)

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