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All-optical complex field imaging using diffractive processors

Light(Science & Applications) 2024年第6期13卷 1122-1139页

作者： Jingxi Li Yuhang Li Tianyi Gan Che-Yung Shen mona Jarrahi Aydogan Ozcan Electrical and Computer Engineering department University of CaliforniaLos AngelesCA90095USA Bioengineering department University of CaliforniaLos AngelesCA90095USA California NanoSystems Institute(CNSI) University of CaliforniaLos AngelesCA90095USA

Complex field imaging,which captures both the amplitude and phase information of input optical fields or objects,can offer rich structural insights into samples,such as their absorption and refractive index ***,conventional image sensors are intensity-based and inherently lack the capability to directly measure the phase distribution of a *** limitation can be overcome using interferometric or holographic methods,often supplemented by iterative phase retrieval algorithms,leading to a considerable increase in hardware complexity and computational ***,we present a complex field imager design that enables snapshot imaging of both the amplitude and quantitative phase information of input fields using an intensity-based sensor array without any digital *** design utilizes successive deep learning-optimized diffractive surfaces that are structured to collectively modulate the input complex field,forming two independent imaging channels that perform amplitude-to-amplitude and phase-to-intensity transformations between the input and output planes within a compact optical design,axially spanning~100 *** intensity distributions of the output fields at these two channels on the sensor plane directly correspond to the amplitude and quantitative phase profiles of the input complex field,eliminating the need for any digital image reconstruction *** experimentally validated the efficacy of our complex field diffractive imager designs through 3d-printed prototypes operating at the terahertz spectrum,with the output amplitude and phase channel images closely aligning with our numerical *** envision that this complex field imager will have various applications in security,biomedical imaging,sensing and material science,among others.

关键词： field. utilize collective

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All-optical image denoising using a diffractive visual processor

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Light(Science & Applications) 2024年第3期13卷 429-445页

作者： Çağatay Işıl Tianyi Gan Fazil Onuralp Ardic Koray Mentesoglu Jagrit digani Huseyin Karaca Hanlong Chen Jingxi Li deniz Mengu mona Jarrahi Kaan Akşit Aydogan Ozcan Electrical and Computer Engineering department University of CaliforniaLos AngelesCA 90095USA Bioengineering department University of CaliforniaLos AngelesCA 90095USA California NanoSystems Institute(CNSI) University of CaliforniaLos AngelesCA 90095USA University College London Department of Computer ScienceLondonUnited Kingdom

Image denoising,one of the essential inverse problems,targets to remove noise/artifacts from input *** general,digital image denoising algorithms,executed on computers,present latency due to several iterations implemented in,e.g.,graphics processing units(GPUs).While deep learning-enabled methods can operate non-iteratively,they also introduce latency and impose a significant computational burden,leading to increased power ***,we introduce an analog diffractive image denoiser to all-optically and non-iteratively clean various forms of noise and artifacts from input images–implemented at the speed of light propagation within a thin diffractive visual processor that axially spansdenoiser comprises passive transmissive layers optimized using deep learning to physically scatter the optical modes that represent various noise features,causing them to miss the output image Field-of-View(FoV)while retaining the object features of *** results show that these diffractive denoisers can efficiently remove salt and pepper noise and image rendering-related spatial artifacts from input phase or intensity images while achieving an output power efficiency of~30–40%.We experimentally demonstrated the effectiveness of this analog denoiser architecture using a 3d-printed diffractive visual processor operating at the terahertz *** to their speed,power-efficiency,and minimal computational overhead,all-optical diffractive denoisers can be transformative for various image display and projection systems,including,e.g.,holographic displays.

关键词： remove rendering holographic

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Chemically Mediated Interactions between Grapevine, Aphid, Ladybird, and Ant in the Context of Insect Chemical Ecology

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Phyton-International Journal of Experimental Botany 2024年第7期93卷 1523-1542页

作者： Taghreed Alsufyani Noura J.Alotaibi Nour Houda M’sakni mona A.Almalki Eman M.a.gha.di department of Chemistry College of ScienceTaif UniversityP.O.Box 11099Taif21944Saudi Arabia department of Biology College of ScienceTaif UniversityP.O.Box 11099Taif21944Saudi Arabia Chemistry department Faculty of ScienceKing AbdulAziz UniversityP.O.Box 80200Jeddah21589Saudi Arabia

This study simpliﬁes the complex relationship among grapevine plants,aphids,ladybirds,and ants,which is essential for effective pest management and ecological *** study investigated the impact of aphid attacks and the presence of ants and ladybirds on the volatile compounds proﬁle released into the chemosphere of the community consisting of the common vine Vitis vinifera,the aphid Aphis illinoisensis,the ladybird Cocci-nella undecimpunctata.a.d the ant Tapinoma *** study aims to analyze the volatile compounds emitted by the grapevine and surrounding insects in response to these intricate *** extraction of volatile organic compounds(VOCs)was carried out using closed-loop stripping(CLS)and then analyzed via gas chromatography-mass spectrometry(GC-MS)and principles coordinated analysis(PCA)was *** grapevine was exposed to different types and order of treatments,including non-infested,aphid-infested,aphid-infested with ant,aphid-infested with ladybird,and various combinations of ant and *** the aphid attack,the outcomes uncovered massive alterations in the volatile compound proﬁ*** grapevine displayed distinct emissions of germacrene d,an alcohol,and an alkene compared to non-infested *** characteristic VOC proﬁle was the share of infested grapes in the presence of ants,with benzene derivatives and sesquiterpenes dominating the *** coexistence of ladybirds with ants and aphids resulted in a dif-ferent volatile proﬁle characterized by elevated levels of aldehydes,ketones,α-farnesene,and its hydroxy *** was concluded that the emission of VOCs into the chemosphere of the grapevine communities varied qualitatively and quantitatively depending on the level of the relationship complexity within each community in response to the infestation of grapevines by aphids,the presence of ladybirds as natural predators,and the presence of ant as *** grapevine’s status-dependent compounds

关键词： Aphids Aphis illinoisensis volatile organic compounds chemosphere pest management gas chromatography-mass spectrometry closed-loop stripping

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development and Optimization of Universal Bone Conduction Hearing Spectacles

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International Journal of Otolaryngology and Head & Neck Surgery 2024年第5期13卷 344-358页

作者： Johannes Burkart mona Kirstin Fehling Saadu Adamu Raúl Pérez Ramos daniel Häussler department of Otorhinolaryngology Head and Neck Surgery University Hospital Mannheim Mannheim Germany National Ear Care Centre Kaduna Nigeria School of Advanced Education Research and Accreditation University Isabel I Castelln de la Plana Spain

Background: Non-implantable bone anchored hearing devices (BCHds) are utilized for patients with conductive or mixed hearing loss who are unsuitable for conventional hearing aids or have unresolved middle ear issues. These devices can be surgically implanted or attached using adhesive plates, dental sticks, elastic headbands, or bone conduction spectacles. Optimal fitting of bone conduction spectacles requires appropriate frame selection and contact pressure in the temporal and mastoid areas. The ANSI S3.6 and diN EN ISO 389-3 standards recommend a contact area of approximately 1.75 cm2 and a maximum force of 5.4 N for effective sound transmission and comfort. Methods: This study aimed to evaluate the technical fit and mechanical stability of universal bone conduction hearing spectacles compared to established systems. A Sen-Pressure 02 thin-film sensor connected to an Arduino Uno R3 board measured contact force in the temporal and mastoid areas. Several BCHds were tested, including the Bruckhoff la belle BC d50/70, Radioear B71 headset, Radioear B71 elastic headband, Cochlear Baha SoundArc M, and Cochlear Baha elastic headband, on a PVC artificial head, with data analyzed using ANOVa.a.d LSd post hoc tests. Results: The la belle BC d50/70 spectacles showed comparable contact force to established BCHds, ensuring adequate sound transmission and comfort. Significant differences were observed between the systems, with the Radioear B71 headset exhibiting the highest forces. The la belle BC d50/70 had similar forces to the Radioear B71 elastic headband. Conclusion: The la belle BC d50/70 universal bone conduction hearing spectacles are a technically equivalent alternative to established BCHds, maintaining pressure below 5.4 N. Future research should explore the impact of different contact forces on performance and comfort, and the integration of force control in modified spectacles. This study indicates that the la belle BC d50/70 is a viable alternative that meets audio

关键词： Bone Conduction Hearing devices (BCHd) Universal Bone Conduction Hearing Spec-Tacles Non-Implantable Hearing Aids Contact Pressure Optimization

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Personalized nutrition to mitigate inflammation in genetically predisposed individuals: a secondary analysis of the danish PREVENTOMICS intervention

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Food Science and Human Wellness 2024年

作者： Sebastià Galmés Andreu Palou-March Kristina Pigsborg mona Adnan Aldubayan Sophia M.O.Gormsen Alberto Calleja Joan Trabal Vanesa Martínez Biotza Gutiérrez Josep M.del Bas Faidon Magkos Francisca Serra Eurecat， Centre tecnològic de Catalunya， Biotechnology Area.a.d Universitat 1 Laboratory of Molecular Biology， Nutrition and Biotechnology (Nutrigenomics， Biomarkers and Risk Evaluation-NuBE)， University of the Balearic Islands Health Research Institute of the Balearic Islands (IdiSBa) CIBER of Physiopathology of Obesity and Nutrition (CIBEROBN)， Carlos III Health Institute (ISCIII) Alimentómica S.L.， Camí de na Pontons.s/n (Pol.11，Parc 3) department of Nutrition， Exercise and Sports， Faculty of Science， University of Copenhagen department of Clinical Nutrition， College of Applied Medical Sciences， King Saud bin Abdulaziz University for Health Sciences R&d， Food & Culinary department Simple Feast Leitat Technological Center C/Innovació 2 Creaciones Aromáticas Industriales SA， Cuatrecasas i Arumí， Sant Quirze del Valles

deep phenotyping and genetic characterization of individuals are fundamental to assessing the metabolic status and determining nutrition-specific requirements. This study aimed to ascertain the utmost effectiveness of personalized interventions by aligning dietary adjustments with both the genotype and metabolotype of individuals. Therefore， we assessed here the usefulness of a polygenic score (PGS) characterizing a potential pro-inflammatory profile (PGSi) as a nutrigenetic tool to discern individuals from the danish PREVENTOMICS cohort that could better respond to precision nutrition (PN) plans， specifically targeted at counteracting the low-grade inflammatory profile typically found in obesity. The cohort followed a PN plan to counteract the pro-inflammatory profile (PNi group) or generic dietary recommendations (Control) for 10 weeks. PGSi was applied for genetic stratification (Low/High). The effects of the intervention on anthropometrics and biomarkers related to inflammatory profile and carbohydrate metabolism were assessed. Around 30% of subjects had a high genetic predisposition to pro-inflammatory status (high-PGSi). These individuals demonstrated the most effective response to the dietary plan， experiencing improved body composition， with significant decreases in body weight (△: -4.84%; p=0.039) and body fat (△: -4.86%; p=0.007)， and beneficial changes in pro- and anti-inflammatory biomarkers， with significant increases in IL-10 (△: 71.3%; p=0.025) and decreases in TNF-α (△: -3.0%; p=0.048)， CRP (△: -31.1%)， ICAM1 (△: -5.8%)， and MCP1 (△: -4.2%) circulating levels， compared to low-PGSi individuals. Both phenotypic and genetic stratification contributed to a better understanding of metabolic heterogeneity in response to diet. This approach allows for refinement of the prediction of individual requirements and potentially for better management of obesity.

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Antiseptic Efficacy of A Soap Made from Biosurfactants Isolated from Bacillus and Lactobacillus against Pathogenic Bacteria

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Advances in Microbiology 2024年第1期14卷 31-58页

作者： Frédéric Yannick Okouakoua Christian Aimé Kayath Nicaise Saturnin Mokémiabeka Varelle Bervanie Ngala Elenga digne Nedjea N’goma-mona Ndelani Nkalla Lambi Sandra Paola Elenga Wilson Christ dieuveil Bayakissa Ma.a.da Rodinet Tsana Junior Patrick Sergy Bissoko1 Moïse doria Kaya-Ongoto duchel Jeanedvi Kinavouidi Etienne Nguimbi Laboratoire de Biologie Cellulaire et Molé culaire (BCM) Facult&eacute des Sciences et Techniques Universit&eacute Marien N’gouabi Brazzaville Congo Institut National de Recherche en Sciences Exactes et Naturelles (IRSEN) Avenue de l’Auberge Gascogne Brazzaville Congo

The aim of our study was to use a biosurfactant produced by Bacillus and Lactobacillus isolates as an antiseptic in the formulation of local soap. A total of 60 isolates were characterized by microbiological techniques (30 Bacillus and 30 Lactobacillus) and the ability to produce biosurfactants was demonstrated by a hydrocarbon emulsification index (E24). The emulsification indexes (E24) varied from 9% to 100% for Bacillus and from 33% to 100% for Lactobacillus as well. The antagonistic assay showed that biosurfactants were able to inhibit the formation of biofilms and growth of pathogens such as Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, Bacillus cereus, Salmonella typhirium, Shigella boydii and Proteus mirabilis. The biosurfactant consortium (BioC) from Bacillus consortium and from Lactobacillus was able to inhibit biofilm formation and the pathogens growth. The BioC was stable to alkaline pH and the temperatures stability of Biosurfactant was ranging from 50°C to 90°C. The soap was made by the cold saponification process using one biosurfactant consortium formulated. This soap has a pH of 10 and showed good cleaning power and good foam stability. Similarly, the soap showed good antiseptic power and disinfection power against all pathogens tested. Handwashing is critical to preventing disease transmission. The persistence of pathogens in waste water was evaluated. The BioS produced showed good disinfection power against all pathogens tested. The valor of reduction on the hands and in the waste water was significantly more than compared to the control soaps used. This soap could be used in the prevention, fighting, and treatment of bacterial and viral infections.

关键词： Antiseptic Soap Biosurfactants Bacillus Lactobacillus disinfection Pathogens bacteria

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A New Evaluation Criterion for Optimizing the Mechanical Properties of Toughened Polypropylene/Silica Nanocomposites

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Chinese Journal of Polymer Science 2020年第8期38卷 877-887,I0008页

作者： Hossein Pourrahmani mona Golparvar Mohammad Fasihi Group of Energy Materials (E)cole Polytechnique Fédérale de LausanneSion 1951Switzerland School of Chemical Petroleum and Gas EngineeringIran University of Science and TechnologyTehran 16846-13114Iran School of Mechanical Engineering Braunschweig university of technologyBraunschweig 38106Germany

This study aims to experiment with the mechanical properties of polypropylene(PP)/thermoplastic elastomer/nano-silica/compatibilizer nanocomposite using the melt mixing *** addition of polyolefin elastomers has proved to be an approachable solution for low impact strength of PP,while it would also reduce the Young's modulus and tensile *** is why reinforcement would be applied to this combination to enhance the elastic *** mechanical properties of the prepared composites were devised to train an artificial neural network to predict these properties of the system in 6256 unknown ***,the sensitivity analysis was performed and the share of each input parameter on the respective output values was ***,a novel parameter called nanocomposite evaluation criterion(NEC)is introduced to analyze the suitability of the nanocomposites considering the mechanical ***,the formulation with optimal mechanical properties of toughness,elongation at break,tensile strength,Young's modulus,and impact strength was obtained.

关键词： Nanocomposite Polypropylene(PP) Silica Artificial neural networks Nanocomposite evaluation criterion(NEC) Sensitivity analysis

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Securing Copyright Using 3d Objects Blind Watermarking Scheme

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Computers, Materials & Continua 2022年第9期72卷 5969-5983页

作者： Hussein Abulkasim mona Jamjoom Safia Abbas Faculty of Science New Valley UniversityEl-Kharga 72511Egypt department of Computer Sciences College of Computer and Information SciencePrincess Nourah Bint Abdulrahman UniversityRiyadh 11671Saudi Arabia

Recently,securing Copyright has become a hot research topic due to rapidly advancing information *** a host cover,watermarking methods are used to conceal or embed sensitive information messages in such a manner that it was undetectable to a human observer in contemporary *** media covers may often take any form,including audio,video,photos,even dNA data *** this work,we present a new methodology for watermarking to hide secret data into 3-d *** technique of blind extraction based on reversing the steps of the data embedding process is *** implemented technique uses the features of the 3-d object vertex’discrete cosine transform to embed a grayscale image with high *** coefficient of vertex and the encrypted picture pixels are used in the watermarking ***,the extraction approach is fully blind and is dependent on the backward steps of the encoding procedure to get the hidden *** distance,Euclidean distance,Manhattan distance,and the Cosine distance are used to evaluate and test the performance of the proposed *** visibility and imperceptibility of the proposed method are assessed to show the efficiency of our work compared to previous corresponding methods.

关键词： discrete cosine transform 3-d object copyright watermarking

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Vitamin d deficiency: Correlation to interleukin-17, interleukin-23 and PⅢNP in hepatitis C virus genotype 4

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World Journal of Gastroenterology 2012年第28期18卷 3738-3744页

作者： mona F Schaalan Waleed A Mohamed Hesham H Amin department of Biochemistry Faculty of Pharmacy Misr International University Cairo 1 Egypt department of Chemistry Cairo University Cairo 11562 Egypt department of Clinical Pathology Faculty of Medicine AL Azhar University Cairo 147 Egypt

AIM: To assess vitamin d (Vit d) abnormalities in hepatitis C infected patients and their relationship with interleukin (IL)-17, IL-23 and N-terminal propeptide of type Ⅲ pro-collagen (PⅢNP) as immune response mediators. METHOdS: The study was conducted on 50 Egyptian patients (36 male, 14 female) with hepatitis C virus (HCV) infection, who visited the Hepatology Outpatient Clinic in the Endemic disease Hospital at Cairo University. Patients were compared with 25 ageand sexmatched healthy individuals. Inclusion criteria were based on a history of liver disease with HCV genotype 4 (HCV-4) infection (as new patients or under followup). Based on ultrasonography, patients were classified into four subgroups; 14 with bright hepatomegaly; 11 with perihepatic fibrosis; 11 with hepatic cirrhosis; and 14 with cirrhosis and hepatocellular carcinoma (HCC).Total Vit d (i.e., 25-OH-Vit d) and active Vit d [i.e., 1,25-(OH) 2 -Vit d] assays were carried out using commercial kits. IL-17, IL-23 and PⅢNP levels were assayed using enzyme linked immunosorbent assay kits, while HCV virus was measured by quantitative and qualitative polymerase chain reaction. RESULTS: Levels of Vit d and its active form were significantly lower in advanced liver disease (hepatic cirrhosis and/or carcinoma) patients, compared to those with bright hepatomegaly and perihepatic fibrosis. IL-17, IL-23 and PⅢNP levels were markedly increased in HCV patients and correlated with the progression of hepatic damage. The decrease in Vit d and active Vit d was concomitant with an increase in viral load, as well as levels of IL-17, IL-23 and PⅢNP among all subgroups of HCV-infected patients, compared to normal healthy controls. A significant negative correlation was evident between active Vit d and each of IL-17, IL-23 and PⅢNP (r = -0.679, -0.801 and -0.920 at P d men and women showed no differences with respect to Vit d levels. The viral load was negatively correlated with Vit d an

关键词： Vitamin d Interleukin-17 Interleukin-23 N-terminal propeptide of type Ⅲ pro-collagen Hepatitis genotype 4

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A comprehensive review of biodegradable synthetic polymer-ceramic composites and their manufacture for biomedical applications

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Bioactive Materials 2019年第1期4卷 22-36页

作者： mona Alizadeh-Osgouei Yuncang Li Cuie Wen School of Engineering RMIT UniversityMelbourneVictoria3001Australia

The application of various materials in biomedical procedures has recently experienced rapid *** area that is currently receiving significant attention from the scientific community is the treatment of a number of different types of bone-related diseases and disorders by using biodegradable polymer-ceramic ***,the most common materials used to repair or replace damaged parts of the human body,can be categorized into three major groups:metals,ceramics,and *** can be manufactured by combining two or more materials to achieve enhanced biocompatibility and biomechanical properties for specific *** must display suitable properties for their applications,about strength,durability,and biological *** and their alloys such as titanium,stainless steel,and cobalt-based alloys have been widely investigated for implant-device applications because of their excellent mechanical ***,these materials may also manifest biological issues such as toxicity,poor tissue adhesion and stress shielding effect due to their high elastic *** mitigate these issues,hydroxyapatite(HA)coatings have been used on metals because their chemical composition is similar to that of bone and ***,a wide range of synthetic polymers such as poly(L-lactic acid)and poly(L-lactide-co-glycolide)have been studied for different biomedical applications,owing to their promising biocompatibility and *** article gives an overview of synthetic polymer-ceramic composites with a particular emphasis on calcium phosphate group and their potential applications in tissue *** is hoped that synthetic polymer-ceramic composites such as PLLA/Ha.a.d PCL/HA will provide advantages such as eliminating the stress shielding effect and the consequent need for revision surgery.

关键词： Synthetic polymers Hydroxyapatite Magnetron sputtering 3d printing

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