bluuebunny/crossref_metadata_2025 huggingface dataset:
Engineering gold-platinum core-shell nanoparticles by self-limitation in solution
Authors: Ledendecker Marc , Paciok Paul , Osowiecki Wojciech T. , Pander Marc , Heggen Marc , Göhl Daniel , Kamat Gaurav A. , Erbe Andreas , Mayrhofer Karl J. J. , Alivisatos A. Paul
Published: June 2022

Core-shell particles with thin noble metal shells represent an attractive material class with potential for various applications ranging from catalysis to biomedical and pharmaceutical applications to optical crystals. The synthesis of well-defined core-shell architectures remains, however, highly challenging. Here, we demonstrate that atomically-thin and homogeneous platinum shells can be grown via a colloidal synthesis method on a variety of gold nanostructures ranging from spherical nanoparticles to nanorods and nanocubes. The synthesis is based on the exchange of low binding citrate ligands on gold, the reduction of platinum and the subsequent kinetically hindered growth by carbon monoxide as strong binding ligand. The prerequisites for homogeneous growth are low core-binding ligands with moderate fast ligand exchange in solution, a mild reducing agent to mitigate homonucleation and a strong affinity of a second ligand system that can bind to the shell’s surface. The simplicity of the described synthetic route can potentially be adapted to various other material libraries to obtain atomically smooth core-shell systems.
Transformation networks of metal–organic cages controlled by chemical stimuli
Authors: Benchimol Elie , Nguyen Bao-Nguyen T. , Ronson Tanya K. , Nitschke Jonathan R.
Published: June 2022

This review highlights transformation networks created with coordination cages. Such synthetic stimuli-controlled networks can help elucidate biological signal transduction, as well as enabling new functions and applications.
A probe-free electrochemical immunosensor for methyl jasmonate based on a Cu-MOF–carboxylated graphene oxide platform
Authors: Xing Gengqi , Wang Cheng , Liu Ke , Luo Bin , Hou Peichen , Wang Xiaodong , Dong Hongtu , Wang Jianshu , Li Aixue
Published: June 2022

A probe-free electrochemical immunosensor for methyl jasmonate has been developed based on a Cu-MOF-carboxylated graphene oxide platform.
Plant-inspired Pluronic–gallol micelles with low critical micelle concentration, high colloidal stability, and protein affinity
Authors: Kim Jungwoo , Ju Jaewon , Kim Sung Dong , Shin Mikyung
Published: June 2022

Plant-inspired gallol-containing surfactants have been successfully incorporated into typical Pluronic® micelles, allowing low critical micelle concentration, great colloidal stability, and exterior enzyme resistance.
A mass-tagged MOF nanoprobe approach for ultra-sensitive protein quantification in tumor-educated platelets
Authors: Chen Xiuyu , Zhu Jianhua , Sun Bo , Zhang Xian , Hu Yechen , Chen Yun
Published: June 2022

A mass-tagged metal–organic framework (MOF) nanoprobe approach was developed for ultra-sensitive quantification of the target protein in blood platelets.
Theoretically identifying the electrocatalytic activity and mechanism of Zn doped 2D h-BN for nitrate reduction to NH3
Authors: Huang Yu , Tang Chunmei , Gong Jiangfeng
Published: June 2022

The hydrogenation selectivity of *NO is significantly correlated with ELF, which could work as an indicator for the reaction analysis of *NO hydrogenation in the eNO3RR.
A Cd(ii)-organic framework as a highly sensitive and rapid fluorometric sensor for ascorbic acid in aqueous medium
Authors: Das Aniruddha , Ghosh Subhrajyoti , Bourda Laurens , SK Mostakim , Banerjee Kaustuv , Van Hecke Kristof , Biswas Shyam
Published: June 2022

A new Cd(ii) MOF was used as a fluorometric sensor for ascorbic acid in water, fruits, vegetables and human urine.
Polarizable molecular dynamics simulations on the conductivity of pure 1-methylimidazolium acetate systems
Authors: Joerg Florian , Schröder Christian
Published: June 2022

Our polarizable molecular dynamics simulations characterize the protic ionic liquid 1-methylimidazolium acetate which is in equilibrium with its neutral species 1-methylimidazole and acetic acid.
Adiabatic models for the quantum dynamics of surface scattering with lattice effects
Authors: Meng Qingyong , Chen Junbo , Ma Jianxing , Zhang Xingyu , Chen Jun
Published: June 2022

We review models for the lattice effects in quantum dynamics calculations on surface scattering, which is important to modeling heterogeneous catalysis for achieving an interpretation of experimental measurements.
Bioengineered nanogels for cancer immunotherapy
Authors: Ma Xianbin , Li Shu-Jin , Liu Yuantong , Zhang Tian , Xue Peng , Kang Yuejun , Sun Zhi-Jun , Xu Zhigang
Published: June 2022

Recent years have witnessed increasingly rapid advances in nanocarrier-based biomedicine aimed at improving treatment paradigms for cancer.
A yolk–shell structure construction for metal–organic frameworks toward an enhanced electrochemical water splitting catalysis
Authors: Xu Zhenhang , Zuo Wei , Mou Qiuxiang , Cheng Gongzhen , Zheng Huaming , Zhao Pingping
Published: June 2022

The yolk–shell structure of Ni MOF-Fe-2 shows ultra-high stability in water splitting under a high current density and is expected to become an efficient catalyst for the production of clean energy.
Centimeter-sized lead-free iodide-based hybrid double perovskite single crystals for efficient X-ray photoresponsivity
Authors: Wang Yuyin , Lin Guoming , Su Bin , Wang Xiushi , Wang Shouxin , Cheng Ziwen , Li Dongyang , Lei Xiao-Wu , Yue Cheng-Yang
Published: June 2022

A perovskite crystal exhibited unique properties for X-ray detection. Moreover, X-ray detection with a sensitivity of 5.51 μC Gyair−1 cm−2 was achieved based on a single crystal.
Chemical composition and morphological analysis of atmospheric particles from an intensive bonfire burning festival
Authors: Tomlin Jay M. , Weis Johannes , Veghte Daniel P. , China Swarup , Fraund Matthew , He Quanfu , Reicher Naama , Li Chunlin , Jankowski Kevin A. , Rivera-Adorno Felipe A. , Morales Ana C. , Rudich Yinon , Moffet Ryan C. , Gilles Mary K. , Laskin Alexander
Published: June 2022

Atmospheric particles were sampled in Rehovot, Israel during a national Lag Ba'Omer bonfire festival as a case study to investigate the physical and chemical transformations of mixed mineral dust and biomass burning (BB) aerosols.
Atomic Spectrometry Update: review of advances in elemental speciation
Authors: Clough Robert , Harrington Chris F. , Hill Steve J. , Madrid Yolanda , Tyson Julian F.
Published: June 2022

This review covers advances in elemental speciation by a range of coupled techniques, including HPLC-ICP-MS, HPLC-HG-AFS and GC-ICP-MS.
Chip assisted formation of phase-separated liposomes for reconstituting spatial protein–lipid interactions
Authors: Chien Po-Jen , Shih Yi-Lun , Cheng Chieh-Teng , Tu Hsiung-Lin
Published: June 2022

Reconstitution of spatially organized molecular assemblies using the PLCδ1-PH and PIP2 interaction in cell-sized, phase-separated liposomes generated by an integrated strategy.
A study on the effect of phase conversion of tungsten nanostructures on their electrochemical energy storage performance
Authors: Mohan Visakh V. , Anjana P. M. , Rakhi R. B.
Published: June 2022

.Herein, we report the synthesis of tungsten based nanostructures such as WO3, WO3−x (WO2.72 : WS2), and WS2 through a facile single step hydrothermal technique and evaluated their supercapacitor performance for energy storage applications.
Enhanced optical force on multilayered dielectric nanoparticles by tuning material properties and nature of excitation: a theoretical investigation
Authors: Yadav Sumit , Devi Anita , De Arijit K.
Published: June 2022

Using dipole approximation, a comparative study of trapping force/potential on bare, core/shell and core/shell/shell types of dielectric nanoparticles is presented. The optimal conditions for high-force or long confinement time are discussed.
Dual fluorometric biosensor based on a nanoceria encapsulated metal organic framework and a signal amplification strategy of a hybridization chain reaction for the detection of melamine and Pb2+ ions in food samples
Authors: Amalraj Arunjegan , Perumal Panneerselvam
Published: June 2022

The increased need for melamine and Pb2+ ion detection systems that are versatile, ultra-sensitive, and easy to use is highly significant.
Room-temperature dissolution of PbI2 by a PEGylated deep eutectic solvent with high efficiency
Authors: Chen Yu , Li Guihua , Qiu Yuhui , Shi Ruifen , Li Yuting , Bi Zixin , Guo Yuting , Zhang Yixuan , Mu Tiancheng
Published: June 2022

PEGylated deep eutectic solvents could dissolve toxic PbI2 efficiently at room temperature.
Plant polyphenol-involved coordination assembly-derived Mo3Co3C/Mo2C/Co@NC with phase regulation and interface engineering for efficient hydrogen evolution reaction electrocatalysis
Authors: Zhao Yu-Hang , Zhang Tao , Wang Xiao-Feng , Li Shao-Jie , Pan Yu , Wang Yihan , Song Xue-Zhi , Tan Zhenquan
Published: June 2022

Heterostructured Mo3Co3C/Mo2C/Co@NC catalysts were obtained by the calcination of tannic acid ligand-assembled precursors, enabling enhanced HER electrocatalysis through phase and interface regulation.
Self-assembly encapsulation of vanadium tetrasulfide into nitrogen doped biomass-derived porous carbon as a high performance electrochemical sensor for xanthine determination
Authors: Zhu Di , Xin Jianjiao , Li Xuemei
Published: June 2022

A novel VS4@N-BPC platform was constructed, and demonstrated a high electrochemical response to xanthine due to the excellent synergistic effect.
Synthesis and characterization of Fe0@chitosan/cellulose biocompatible composites from natural resources as advanced carriers for ibuprofen drug: reaction kinetics and equilibrium
Authors: Abukhadra Mostafa R. , El Kashief Fatma A. , Othman Sarah I. , Alqhtani Haifa A. , Allam Ahmed A.
Published: June 2022

Fe0@chitosan/cellulose was synthesized as a carrier for Ibuprofen drug. It has achieved a loading capacity of 553 mg g−1 and a slow release profile for 260 h, which is controlled by complex diffusion and erosion mechanisms.
Biocatalytic conversion of sunlight and carbon dioxide to solar fuels and chemicals
Authors: Yau Mandy Ching Man , Hayes Martin , Kalathil Shafeer
Published: June 2022

Interfacing photocatalysts with microbes to produce solar fuels and chemicals from carbon dioxide and sunlight.
Antiferromagnetic ordering in the TM-adsorbed AlN monolayer (TM = V and Cr)
Authors: Nguyen Duy Khanh , Vu Tuan V. , Hoat D. M.
Published: June 2022

The effects of transition metal (TM = V and Cr) adsorption on AlN monolayer electronic and magnetic properties are investigated using first-principles density functional theory calculations.
Biocompatible fluorocarbon liquid underlays for in situ extraction of isoprenoids from microbial cultures
Authors: Overmans Sebastian , Lauersen Kyle J.
Published: June 2022

A novel bioprocess to capture and purify terpenoids produced by engineered microbes using 2-phase cultivation of the algae with liquid perfluorocarbons followed by liquid–liquid extraction of the terpenoids with ethanol.
Graphitic carbon nitride and APTES modified advanced electrochemical biosensor for detection of 17β-estradiol in spiked food samples
Authors: Bacchu M. S. , Ali M. R. , Hasan M. N. , Mamun M. R. A. , Hossain M. I. , Khan M. Z. H.
Published: June 2022

This work demonstrates a simple and inexpensive electrochemical biosensing pathway for selective and sensitive recognition of 17β-estradiol (E2) in environmental and food samples.
Highly covalent molecular cage based porous organic polymer: pore size control and pore property enhancement
Authors: Wang Zhen , Liu Yan-Qun , Zhao Yu-Hang , Zhang Qing-Pu , Sun Yu-Ling , Yang Bin-Bin , Bu Jian-Hua , Zhang Chun
Published: June 2022

By utilizing the cage to framework strategy, the blocking pores of the cage itself were “turned on” to construct a highly covalent molecular cage based porous organic polymer.
Effect of chain extenders with different functionalities on the properties of single-component waterborne polyurethane ink binders
Authors: Yang Zhihui , Cui Xiang
Published: June 2022

Waterborne polyurethane (WPU) dispersions were prepared by post-chain extension and crosslinking reactions using different functional chain extenders. The influences of chain extenders type on the properties of WPUs were investigated.
Waterborne superamphiphobic coatings with network structure for enhancing mechanical durability
Authors: Gu Wancheng , Wang Wei , Jiao Xuan , Deng Weilin , Xia Yage , Yu Xinquan , Zhang Youfa
Published: June 2022

A versatile, scalable, waterborne, and superamphiphobic coating with ultra-durability is developed by protection of a network structure.
Total syntheses of ent-hypocoprin A and ent-hypocoprin B
Authors: Ota Koichiro , Watanabe Taiki , Igarashi Shuntaro , Okazaki Shinnosuke , Kamaike Kazuo , Miyaoka Hiroaki
Published: June 2022

This study reports the stereoselective total syntheses of the antipodes of the unique 3/10 bicyclic skeletal sesquiterpenoids, namely, hypocoprin A and hypocoprin B.
Diastereoselective synthesis of chroman bearing spirobenzofuranone scaffolds via oxa-Michael/1,6-conjugated addition of para-quinone methides with benzofuranone-type olefins
Authors: Qin Hongmei , Xie Qimei , He Long
Published: June 2022

Highly diastereoselective synthesis of spirocyclic compounds combining both well-known heterocyclic pharmacophores chroman and benzofuran-2-one.
Organic ammonium chloride salt incorporated SnO2electron transport layers for improving the performance of perovskite solar cells
Authors: Che Zhigang , Zhang Limeng , Shang Jiacheng , Wang Qi , Zhou Yurong , Zhou Yuqin , Liu Fengzhen
Published: June 2022

A modification strategy of the SnO2ETLs by incorporating an organic ammonium chloride salt, PACl, to the commercial SnO2colloidal solution is presented. A PCE up to 22.27% is achieved on the n-i-p planar PSCs based on the PACl incorporated SnO2ETLs.
Tuneable phase behaviour and glass transition via polymerization-induced phase separation in crosslinked step-growth polymers
Authors: Leguizamon Samuel C. , Ahn Juhong , Lee Sangwoo , Jones Brad H.
Published: June 2022

A universal approach to tune polymerization-induced phase separation is expanded and studied by X-ray scattering and dynamic mechanical analysis.
Chemically functionalized phosphorenes and their use in the water splitting reaction
Authors: Vishnoi Pratap , Saraswat Aditi , Rao C. N. R.
Published: June 2022

Phosphorene (few layer black phosphorus) has the potential to be an efficient catalyst for H2 evolution from water splitting reaction. This perspective highlights functionalized phosphorenes and explores their use in catalytic H2 production.
Atomic step formation on porous ZnO nanobelts: remarkable promotion of acetone gas detection up to the parts per trillion level
Authors: Kim Kyusung , Choi Pil gyu , Itoh Toshio , Masuda Yoshitake
Published: June 2022

Atomic step structures on porous ZnO nanobelts provide coordinatively unsaturated sites that allow an outstanding sensitivity with a limit of detection (LOD) as low as 72 ppt.
A single atom Ir doped heterophase of a NiMoP-NiMoPxOy ultrathin layer assembled on CNTs-graphene for high-performance water splitting
Authors: Hoa Van Hien , Prabhakaran Sampath , Nhi Le Kha Thuy , Kim Do Hwan
Published: June 2022

Rationally designed bifunctional electrocatalyst, Ir-NiMoP-NiMoPxOy/CNTs-Gr/Cu, required only 1.47 V at 10 mA cm−2 for overall water splitting with outstanding stability after 150 h.
Function-directed design of battery separators based on microporous polyolefin membranes
Authors: Yang Yanfei , Wang Wankai , Meng Guilin , Zhang Junping
Published: June 2022

The state-of-the-art research on the function-directed design of microporous polyolefin membranes separators is reviewed and discussed.
Membrane-fusogenic biomimetic particles: a new bioengineering tool learned from nature
Authors: Kong Huimin , Yi Ke , Zheng Chunxiong , Lao Yeh-Hsing , Zhou Huicong , Chan Hon Fai , Wang Haixia , Tao Yu , Li Mingqiang
Published: June 2022

This review aims to highlight the recent advances, key limitations, and future directions of membrane-fusogenic biomimetic particles for biomedical applications.
Composition control of conformal crystalline GeSbTe films by atomic layer deposition supercycles and tellurization annealing
Authors: Kim Yewon , Kim Kwonyoung , Kim Okhyeon , Park Chang Yup , Koo Dong Geon , Ahn Dong-Ho , Kuh Bong Jin , Lee Won-Jun
Published: June 2022

Considering the three-dimensional vertical phase-change random access memory device application, we studied the deposition process to prepare conformal crystalline GeSbTe thin films.
A highly efficient violet-blue OLED with Rec.2020 CIEy based on an orthogonal phenanthroimidazole-substituted 1,2,4-triazole derivative
Authors: Peng Ling , Huo Yumiao , Hua Lei , Lv Jichen , Liu Yuchao , Ying Shian , Yan Shouke
Published: June 2022

A violet-blue OLED derived from an orthogonal phenanthroimidazole-substituted 1,2,4-triazole fluorophore achieved a high EQE of 6.01% and CIEy of 0.043, being close to the blue standard of Rec.2020.
Energy levels of Eu2+ states in the next-generation LED-phosphor SrLi2Al2O2N2:Eu2+
Authors: Amin Muhammad Ruhul , Strobel Philipp , Schnick Wolfgang , Schmidt Peter J. , Moewes Alexander
Published: June 2022

Our study accesses directly information on electronic and optical properties of phosphors such as intragap states and radiative energy levels. It further describes how the applied methods inform design and understanding of new pc-LED phosphors.
Balancing fluorescence and singlet oxygen formation in push–pull type near-infrared BODIPY photosensitizers
Authors: Deckers Jasper , Cardeynaels Tom , Doria Sandra , Tumanov Nikolay , Lapini Andrea , Ethirajan Anitha , Ameloot Marcel , Wouters Johan , Di Donato Mariangela , Champagne Benoît , Maes Wouter
Published: June 2022

Rational, computationally guided, molecular design affords push–pull BODIPY photosensitizers with balanced brightness and phototoxicity for image-guided photodynamic therapy.
Efficient symmetry breaking spin–orbit charge transfer-induced intersystem crossing in compact orthogonal perylene-phenothiazine or -phenoxazine triads and observation of the delayed fluorescence
Authors: Imran Muhammad , Pang Junhong , Zhao Jianzhang , Li Ming-De
Published: June 2022

For the first time, efficient spin–orbit charge transfer intersystem crossing (ΦΔ = 70%) is attained via the symmetry-breaking charge transfer approach in newly designed perylene orthogonal triads.
In memoriam of Alasdair James Campbell
Authors: Stingelin Natalie , Rumbles Garry
Published: June 2022

Natalie Stingelin and Garry Rumbles introduce this joint Journal of Materials Chemistry C and Sustainable Energy & Fuels collection in memory of Professor Alasdair J Campbell.
The structure–function relationships and physiological roles of MnSOD mutants
Authors: Bonetta Valentino Rosalin
Published: June 2022

In this review, we focus on understanding the structure–function relationships of numerous manganese superoxide dismutase (MnSOD) mutants to investigate the role that various amino acids play to maintain enzyme quaternary structure or the active site structure, catalytic potential and metal homeostasis in MnSOD, which is essential to maintain enzyme activity. We also observe how polymorphisms of MnSOD are linked to pathologies and how post-translational modifications affect the antioxidant properties of MnSOD. Understanding how modified forms of MnSOD may act as tumor promoters or suppressors by altering the redox status in the body, ultimately aid in generating novel therapies that exploit the therapeutic potential of mutant MnSODs or pave the way for the development of synthetic SOD mimics.
HECT ubiquitin ligases as accessory proteins of the plant proteasome
Authors: Wang Zhishuo , Spoel Steven H.
Published: June 2022

The proteasome plays vital roles in eukaryotic cells by orchestrating the regulated degradation of large repertoires of substrates involved in numerous biological processes. Proteasome dysfunction is associated with a wide variety of human pathologies and in plants severely affects growth, development and responses to stress. The activity of E3 ubiquitin ligases marks proteins fated for degradation with chains of the post-translational modifier, ubiquitin. Proteasomal processing of ubiquitinated substrates involves ubiquitin chain recognition, deubiquitination, ATP-mediated unfolding and translocation, and proteolytic digestion. This complex series of steps is made possible not only by the many specialised subunits of the 1.5 MDa proteasome complex but also by a range of accessory proteins that are recruited to the proteasome. A surprising class of accessory proteins are members of the HECT-type family of ubiquitin ligases that utilise a unique mechanism for post-translational attachment of ubiquitin to their substrates. So why do proteasomes that already contain all the necessary machinery to recognise ubiquitinated substrates, harbour HECT ligase activity? It is now clear that some ubiquitin ligases physically relay their substrates to proteasome-associated HECT ligases, which prevent substrate stalling at the proteasome. Moreover, HECT ligases ubiquitinate proteasome subunits, thereby modifying the proteasome’s ability to recognise substrates. They may therefore enable proteasomes to be both non-specific and extraordinarily selective in a complex substrate environment. Understanding the relationship between the proteasome and accessory HECT ligases will reveal how the proteasome controls so many diverse plant developmental and stress responses.
Engineering design optimisation using reinforcement learning with episodic controllers
Authors: Yang Jun , Cheng Zhenbo , Xiao Gang , Xu Xuesong , Wang Yaming , Ding Haonan , Zhou Diting
Published: June 2022

Engineers solving engineering design problems can be regarded as a gradual optimisation process that involves strategising. The process can be modelled as a reinforcement learning (RL) framework. This article presents an RL model with episodic controllers to solve engineering problems. Episodic controllers provide a mechanism for using the short‐term and long‐term memories to improve the efficiency of searching for engineering problem solutions. This work demonstrates that the two kinds of models of memories can be incorporated into the existing RL framework. Finally, an optimised design problem of a crane girder is illustrated by RL with episodic controllers. The work presented in this study leverages the RL model that has been shown to mimic human problem solving in engineering optimised design problems.
Scene images and text information‐based object location of robot grasping
Authors: Liu Zhichao , Ding Kaixuan , Xu Qingyang , Song Yong , Yuan Xianfeng , Li Yibin
Published: June 2022

With the rapid development of artificial intelligence (AI), the application of this technology in the medical field is becoming increasingly extensive, along with a gradual increase in the amount of intelligent equipment in hospitals. Service robots can save human resources and replace nursing staff to achieve some work. In view of the phenomenon of mobile service robots' grabbing and distribution of patients' drugs in hospitals, a real‐time object detection and positioning system based on image and text information is proposed, which realizes the precise positioning and tracking of the grabbing objects and completes the grasping of a specific object (medicine bottle). The lightweight object detection model NanoDet is used to learn the features of the grasping objects and the object category, and bounding boxes are regressed. Then, the images in the bounding boxes are enhanced to overcome unfavourable factors, such as a small object region. The text detection and recognition model PP‐OCR is used to detect and recognise the enhanced images and extract the text information. The object information provided by the two models is fused, and the text recognition result is matched with the object detection box to achieve the precise positioning of the grasping object. The kernel correlation filter (KCF) tracking algorithm is introduced to achieve real‐time tracking of specific objects to precisely control the robot's grasping. Both deep learning models adopt lightweight networks to facilitate direct deployment. The experiments show that the proposed robot grasping detection system has high reliability, accuracy and real‐time performance.
Contour loss for instance segmentation via k‐step distance transformation image
Authors: Guo Xiaolong , Lan Xiaosong , Wang Kunfeng , Li Shuxiao
Published: June 2022

Instance segmentation aims to locate targets in the image and segment each target at the pixel level, which is one of the most important tasks in computer vision. Mask R‐CNN is a classic method of instance segmentation, but we find that its predicted masks are unclear and inaccurate near contours. To cope with this problem, we draw on the idea of contour matching based on distance transformation image and propose a novel loss function called contour loss. Contour loss is designed to specifically optimise the contour parts of the predicted masks, thus can assure more accurate instance segmentation. To make the proposed contour loss be jointly trained under modern neural network frameworks, we design a differentiable k‐step distance transformation image calculation module, which can approximately compute truncated distance transformation images of the predicted mask and the corresponding ground‐truth mask online. The proposed contour loss can be integrated into existing instance segmentation methods such as Mask R‐CNN, and combined with their original loss functions without modification of the structures of inference network, thus has strong versatility. Experimental results on COCO show that contour loss is effective, which can further improve instance segmentation performances.
A review about Technology in mental health sensing and assessment
Authors: Jossou Thierry , Medenou Daton , Et-tahir Aziz , Ahouandjinou Héribert , Edoh Thierry , Houessouvo Roland , Pecchia Leandro
Published: June 2022

Information and communication technologies (ICT) such as smart devices, the Internet of Things and wireless sensor networks are gradually being introduced into the health system for early diagnosis and management of certain diseases. The state of the art of the use of these technologies in mental health identified 37 articles published in indexed high impact journals in the period 2003-2021. The snowball sampling method was used to select these papers. From this literature review, it appears that several of these technologies are used to support the early detection of mental disorders. Various systems based on wearable sensor networks, the Internet of Things and pervasive and ubiquitous computing have been designed and implemented in this sense. However, most of the applications are designed for academic purposes. 29% of the papers deal with the use of mobile technology in the detection of mental illness, while 67% have studied other technologies such as wearable sensor networks. 4% of the papers concern the use of web platforms in the detection and assessment of mental health disorders.
Big Data Management and Smart City: From Affordance technology perspective view size
Authors: Dalhi Adnane , Belghiti Imane Daha , Guerouate Fatima
Published: June 2022

Cities are aware today more than ever by the value of new technologies to develop effective and sustainable services for citizens, visitors, and businesses in all areas of the territory, this awareness is based on the inclusion of technology in the socio-economic formula by integrating modern analytical tools to analyze massive urban data to capitalize on valuable insights about key strategic performance indicators for the success of city model. This paper’s main contribution is to explore big data analytics adoption in smart city model using affordance theory and providing an example of the use of technology affordance perspective as one of the concepts that has been adopted in a variety of studies that used to describe and analyze the potential enabled affordances for actions that arise from the relationship between a technological artefact and goal-oriented actors of Big Data Management tools and how adopting a high-level big data smart city driven strategy can unlock new technological and business potentials.
Intrusion Detection System Using machine learning Algorithms
Authors: Tahri Rachid , Balouki Youssef , Jarrar Abdessamad , Lasbahani Abdellatif
Published: June 2022

The world has experienced a radical change due to the internet. As a matter of fact, it assists people in maintaining their social networks and links them to other members of their social networks when they require assistance. In effect sharing professional and personal data comes with several risks to individuals and organizations. Internet became a crucial element in our daily life, therefore, the security of our DATA could be threatened at any time. For this reason, IDS plays a major role in protecting internet users against any malicious network attacks. (IDS) Intrusion Detection System is a system that monitors network traffic for suspicious activity and issues alerts when such activity is discovered. In this paper, the focus will be on three different classifications; starting by machine learning, algorithms NB, SVM and KNN. These algorithms will be used to define the best accuracy by means of the USNW NB 15 DATASET in the first stage. Based on the result of the first stage, the second one is used to process our database with the most efficient algorithm. Two different datasets will be operated in our experiments to evaluate the model performance. NSL-KDD and UNSW-NB15 datasets are used to measure the performance of the proposed approach in order to guarantee its efficiency.
Criteria Definition in Green Supplier Selection for Moroccan building material industry
Authors: El Bettioui Wissal , Zaim Mounia , Sbihi Mohammed
Published: June 2022

Purchasing management and supplier selection, an important function in the supply chain management, play a significant role in the finished product quality. Since the supplier contributes to the business development and brand image of the company, identifying the most appropriate one is a critical and challenging decision. This decision depends on several factors that need to be carefully identified and clearly defined. They should not be standard or common to all supplier selection problems but rather adapted to the specific case under study. The choice of the selection criteria is affected by different parameters such as the industry studied, the type of production and the requirements of the managers. The aim of this study is to provide decision makers with the most relevant selection criteria to consider when evaluating green suppliers in building materials industry. To achieve this goal, we first conducted a thorough and detailed review of published literature on green supplier selection issues in order to extract the various criteria and sub-criteria recommended by authors. This list was then narrowed down to the most relevant criteria after analyzing the questionnaire results with experts. Finally, a list of criteria for green supplier selection is proposed along with their definitions.
Detection of COVID-19 from chest radiology using histogram equalization combined with a CNN convolutional network
Authors: Benradi Hicham , Chater Ahmed , Lasfar Abdelali
Published: June 2022

The world was shaken by the arrival of the corona virus (COVID-19), which ravaged all countries and caused a lot of human and economic damage. The world activity has been totally stopped in order to stop this pandemic, but unfortunately until today the world knows the arrival of new wave of contamination among the population despite the implementation of several vaccines that have been made available to the countries of the world and this is due to the appearance of new variants. All variants of this virus have recorded a common symptom which is an infection in the respiratory tract. In this paper a new method of detection of the presence of this virus in patients was implemented based on deep learning using a deep learning model by convolutional neural network architecture (CNN) using a COVID-QU chest X- ray imaging database. For this purpose, a pre-processing was performed on all the images used, aiming at unifying the dimensions of these images and applying a histogram equalization for an equitable distribution of the intensity on the whole of each image. After the pre-processing phase we proceeded to the formation of two groups, the first Train is used in the training phase of the model and the second called Test is used for the validation of the model. Finally, a lightweight CNN architecture was used to train a model. The model was evaluated using two metrics which are the confusion matrix which includes the following elements (ACCURACY, SPECIFITY, PRESITION, SENSITIVITY, F1_SCORE) and Receiver Operating Characteristic (the ROC curve). The results of our simulations showed an improvement after using the histogram equalization technique in terms of the following metrics: ACCURACY 96.5%, SPECIFITY 98.60% and PRESITION 98.66%.
Thermal image processing for defect analysis and detection
Authors: Ereddoudi Youssef , Bouganssa Issam , Salbi Adil , Sbihi Mohammed , Zaim Mounia
Published: June 2022

Infrared thermography is a thermal measurement process that produces images in which each pixel contains a temperature measurement. This technique is very popular in many industries and fields such as preventive and/or predictive maintenance and non-destructive testing, to detect problems more efficiently and safely, but is not currently used effectively. [1]

Techniques and technical applications are developed, for the detection and analysis of a certain defect on electronic circuits and electrical equipment. Current thermographic processing software has some limitations, mainly because it is developed for general applications and does not identify a region of interest. The identification of a region of interest with a particular anatomical shape. These shapes are limited when they do not correspond to the complex geometric shape of the area to be characterized, either by exclusion or inclusion of irrelevant data in the evaluation of thermal images. This restriction is observed regardless of the accuracy of the region of interest. This paper presents an image processing technic for localization of MOSFET faults based on thermal, hence the use of segmentation algorithms increases the accuracy of the thermal image analysis.
Conceptos actuales: Ventajas del clavo endomedular para fracturas del húmero proximal
Authors: Marsalli Michael
Published: June 2022

Las fracturas de húmero proximal (FHP) son una de las fracturas más frecuentes en la población anciana. La reducción abierta y fijación interna (RAFI) generalmente está indicada para pacientes con una FHP desplazada en jóvenes o pacientes mayores con alta demanda funcional y buena calidad ósea. No se ha llegado a un consenso sobre la técnica de fijación ideal. La RAFI con placas ha sido la más utilizada, pero se han reportado altas tasas de reintervenciones y complicaciones globales en la literatura. La necesidad de agregar técnicas de aumentación a la RAFI con placas bloqueadas en fracturas complejas puede resultar en un tiempo quirúrgico más largo, abordajes extensos y mayores costos. Debido a esto, se hace necesario considerar otras opciones para la osteosíntesis de FHP. Con una mayor comprensión de los mecanismos de falla de la osteosíntesis, la fijación intramedular se ha convertido en una opción de tratamiento aceptada para las FHP con ventajas biomecánicas y biológicas. La fijación intramedular para las FHP ha demostrado menor tiempo quirúrgico, sangrado intraoperatorio, tiempo hasta la unión ósea y menores tasas de infecciones, que las placas bloqueadas. La fijación intramedular es una opción válida para que las fracturas complejas se resuelvan con un implante que por sí solo puede satisfacer en gran medida todas las necesidades de aumento requeridas por una placa bloqueada.
Ten-Year Long-Term Analysis of Mechanical and Biological Aortic Valve Replacement
Authors: Eghbalzadeh Kaveh , Kuhn Elmar W. , Gerfer Stephen , Djordjevic Ilija , Rahmanian Parwis , Mader Navid , Wahlers Thorsten C. W.
Published: June 2022

Background For patients undergoing aortic valve replacement (AVR), structural valve deterioration (SVD) of a bioprosthesis (BP) is substantially accelerated in younger patients and valve-in-valve implantation is not always a considerable option. The risk–benefit assessment between SVD versus the risk of bleeding and thromboembolic events in patients with a mechanical prosthesis (MP) resulted in an age limit shift irrespective of inconsistent results reported in literature.

Method This retrospective single-center study compared 10-year long-term outcomes in patients undergoing isolated AVR with MP or BP. The risk-adjusted comparison of patients undergoing isolated AVR (n = 121) was performed after 1:1 propensity score matching (PSM) for age, sex, endocarditis, and chronic renal impairment (caliper of 0.2) leading to 29 pairs. Short- and long-term outcomes with respect to reoperation, major bleeding, stroke, all-cause and cardiovascular mortality, and overall survival at 10 years were analyzed.

Results After PSM, groups were comparable with respect to preoperative characteristics, including patients with a mean age of 65 ± 3 years (MP) and 66 ± 4 years (BP) and an incidence rate of 6.9% for infective endocarditis in both cohorts. Short-term outcomes (transient neurologic disorder = 0.0 vs. 6.9%; stroke = 0.0%; in-hospital mortality = 3.4%) and in-hospital stays were comparable between MP and BP.

Conclusion After isolated AVR with MP and BP, 10-year long-term outcomes were comparable in the reported single-center cohort. MP can still be implanted safely without a disadvantage as regards long-term survival.
Tranexamic Acid and the Risk of Delirium after Off-Pump Surgery
Authors: Hulde Nikolai , Zittermann Armin , Deutsch Marcus-Andre , Gummert Jan F. , von Dossow Vera , Koster Andreas
Published: June 2022

We investigated whether in patients undergoing off-pump coronary artery bypass grafting surgery a single bolus of 1 g tranexamic acid (TXA) impacts the risk of postoperative delirium using the propensity score matching approach. In 2,757 pairs, the risk of delirium was 4.2% (TXA group) and 5.0% (non-TXA group), with a relative risk in the TXA versus the non-TXA group of 0.83 (95% confidence interval: 0.65–1.07; p = 0.16). There was no significant interaction between TXA administration and renal function on the risk of delirium (p = 0.12). Data indicate that a single bolus of 1 g TXA does not increase the risk of delirium in patients undergoing off-pump surgery.
Axial Length, Anterior Chamber Depth, and Lens Thickness in Normal Libyan Eyes; Measured by the Aladdin Ocular Biometer
Authors: Bukhatwa Samar A. , Suliman Masuod
Published: June 2022

Background Ocular parameters as axial length (AL), anterior chamber depth (ACD), and lens thickness (LT) are important for refractive and cataract surgeries, and its normal data are important to be identified.

Aim This study was carried out to obtain data about AL, ACD, and LT parameters in normal Libyans.

Methods A cross-sectional study (first of July to end of August, 2021) was done in Benghazi teaching eye hospital on 106 nondiabetic volunteers aged between 17 and 75 years with no ophthalmic disease. Ocular parameters were measured using the Aladdin optical biometer that is a noninvasive machine and without the use of drugs. Descriptive statistics and data analysis were done by using SPSS version 23.0, IBM Corporation.

Results The mean age was 35.36 ±  13.35 years, the mean AL was 23.79 ± 0.91 mm, the mean ACD was 2.96 ± 0.62 mm, and the mean LT was 3.67 ± 0.62 mm. There was no statistically significant difference between these parameters regarding gender or age.

Conclusion This is the first study done on Libyan population to report the AL, ACD, and LT. It showed a comparable result with studies from other populations and that age and gender have no effect on these ocular parameters.
Metastatic Brain Tumor in the Cerebellopontine Angle from Gastric Cancer: A Case Report
Authors: Uchimura Masahiro , Kambara Mizuki , Hayashi Kentaro , Takigawa Haruo , Anno Yuichi , Akiyama Yasuhiko
Published: June 2022

Cerebellopontine angle (CPA) tumors are a common type of benign tumors, which are similar to vestibular schwannomas; however, the incidence of CPA metastasis is rare. Moreover, brain metastasis from gastric tumors is a rare occurrence, with an incidence of less than 1% in clinical cases. In this study, we report the case of a 71-year-old man who was admitted to our hospital with symptoms of nausea and gait instability for the past 1 week. He had no remarkable medical history. Magnetic resonance imaging revealed a tumor in the left CPA. Intraoperative diagnosis indicated the presence of metastatic papillary carcinoma. Postoperatively, gastric endoscopy revealed a protruding mass on the cardia of the stomach, which was histopathologically similar to that of the resected brain tumor. The patient underwent adjuvant cyberknife radiotherapy and chemotherapy. A prompt biopsy of the brain tumor is essential if any findings suggest malignancy.
Trapeziometacarpal External Fixation under Local Anesthesia for the Treatment of Comminuted Intra-Articular Thumb Metacarpal Fractures: Evaluation of Clinical Results and Long-Term Patient Satisfaction
Authors: Chalidis Byron E. , Kitridis Dimitrios , Gigis Ioannis , Givissis Panagiotis K.
Published: June 2022

Background A variety of internal and external fixation techniques have been described for the treatment of Rolando fractures, but the optimal fixation method has not been clearly defined.

Purpose The aim of the study was to describe the results and the long-term functional outcome of the application, under local anesthesia, of an external fixation system for the treatment of Rolando fractures.

Patients and Methods In total, 22 consecutive patients (16 men) underwent surgical treatment for Rolando fractures by using two pairs of pins external fixator. All procedures were performed under local anesthesia (Xylocaine 2%) and an image intensifier. Patients were evaluated at regular intervals postoperatively and contacted by phone for long-term follow-up. Functional outcome was assessed using the validated Quick Disabilities of the Arm, Shoulder, and Hand (Quick DASH) tool.

Results The mean age was 39.8 ± 14.2 years. The mean time from injury to surgery was 4.1 ± 2 days. The mean operative time was 16.3 ± 2.6 minutes. All fractures were healed and no loss of fracture reduction was observed postoperatively. One patient developed wound erythema at the proximal pins, without requiring early removal of the implant, and another one experienced temporary numbness at the distribution of the superficial radial nerve. In total, 20 out of the 22 patients who were available for long-term follow-up did not report any complaints and could perform the daily activities without restriction. The average follow-up was 6.5 ± 1.2 years, and the mean Quick DASH score was 1.8 ± 3.

Conclusion The two pairs of pins external fixator is a valuable option for the treatment of Rolando fractures and can be easily, quickly, and effectively applied under local anesthesia.
Avaliação funcional do ombro após osteossíntese da fratura da tuberosidade maior: Há influência da luxação glenoumeral?
Authors: Mouraria Guilherme Grisi , Cunha Renato Mason Rodrigues da , Coelho Sérgio de Paula , Brigatto Rafael Mulati , Cruz Márcio Alves , Etchebehere Maurício
Published: June 2022

Objetivo Avaliar os resultados funcional e radiográfico pós-operatórios do ombro, em pacientes submetidos a sutura transóssea de fratura da tuberosidade maior (FTM) por acesso anterolateral, e a influência da luxação glenoumeral nesses resultados.

Métodos Realizou-se estudo retrospectivo e avaliação funcional (pela escala de Constant-Murley). Calculou-se a distância entre a tuberosidade maior e a superfície articular do úmero proximal (por meio de radiografia em incidência anteroposterior verdadeira) após a consolidação. Usou-se o teste Exato de Fisher para as variáveis independentes categóricas, e os testes tde Student ou de Mann-Whitney para as não categóricas.

Resultados Ao todo, 26 pacientes preencheram os critérios de inclusão. A associação de luxação glenoumeral com FTM foi observada em 38% da amostra. A média da pontuação na escala de Constant-Murley foi de 82,5 ± 8,02. A presença de luxação associada não alterou o resultado funcional. A distância média da consolidação da tuberosidade maior do úmero em relação à superfície articular da cabeça umeral foi de 9 ± 4,3 mm abaixo da linha articular da cabeça umeral. Pacientes com luxação associada evoluíram com redução menor, mas isso não influenciou na pontuação na escala de Constant-Murley.

Conclusão As FTMs submetidas ao tratamento cirúrgico com sutura transóssea evoluíram com bom resultado funcional. A presença de luxação dificultou a redução anatômica da tuberosidade maior. Entretanto, isso não influenciou na pontuação na escala de Constant-Murley.
Empowered and embedded: ethics and agile processes
Authors: Zuber Niina , Gogoll Jan , Kacianka Severin , Pretschner Alexander , Nida-Rümelin Julian
Published: June 2022

This article focuses on the structural aspects of the development of ethical software, and argues that ethical considerations need to be embedded into the (agile) software development process. In fact, it is claimed that agile processes of software development lend themselves specifically well for this endeavor. First, it is contended that ethical evaluations need to go beyond the use of software products and include an evaluation of the software itself. This implies that software engineers influence peoples’ lives through the features of their designed products. Embedded values should thus also be approached by software engineers themselves. Therefore, the emphasis is put on the possibility to implement ethical deliberations in already existing and well-established agile software development processes. The proposed approach relies on software engineers making their own judgments throughout the entire development process to ensure that technical features and ethical evaluation can be addressed adequately to transport and foster desirable values and norms. It is argued that agile software development processes may help the implementation of ethical deliberation for five reasons: (1) agile methods are widely spread, (2) their emphasis on flat hierarchies promotes independent thinking and autonomy, (3) their reliance on existing team structures serve as an incubator for deliberation, (4) agile development enhances object-focused techno-ethical realism, and, finally, (5) agile structures provide a salient endpoint to deliberation.
z
+: Neutron cross section separation from wide-angle uniaxial polarization analysis
Authors: Nilsen G. J. , Arslan S. , Cassella G. , Perry R. S. , Goff J. P. , Voneshen D. J.
Published: June 2022

We introduce a simple method to extract the nuclear coherent and isotope incoherent, spin incoherent, and magnetic neutron scattering cross section components from powder scattering data measured using a single neutron beam polarization direction and a position-sensitive detector with large out-of-plane coverage. The method draws inspiration from polarized small-angle neutron scattering and contrasts with conventional so-called “xyz” polarization analysis on wide-angle instruments, which requires measurements with three orthogonal polarization directions. The viability of the method is demonstrated on both simulated and experimental data for the classical “spin ice” system Ho2Ti2O7, the latter from the LET direct geometry spectrometer at the ISIS facility. The cross section components can be reproduced with good fidelity by either fitting the out-of-plane angle dependence around a Debye–Scherrer cone or grouping the data by angle and performing a matrix inversion. The limitations of the method and its practical uses are discussed.