- 标题
- 摘要
- 关键词
- 实验方案
- 产品
-
Inorganic-organic hybrid materials and their adsorbent properties
摘要： Owing to their unique chemical and physical properties, inorganic-organic hybrid materials have been used in many application fields. In this paper, I have summarized the synthesis and characterization of various inorganic-organic hybrid materials with representative examples from my previous studies. These hybrid materials were used as adsorbents in heavy metal adsorption processes in order to solve metal pollution which is one of the most important environmental problems in the world. This review highlights the operation conditions such as pH, required dose, initial concentration, temperature, and treatment performance. Also, adsorption isotherms and adsorption kinetics are reviewed. This knowledge will provide the basis for the researchers who seek the new synthesis and application of hybrid materials in the future.
关键词： Adsorbents,Application,Synthesis,Hybrid material
更新于2025-09-23 15:19:57
-
Fast non-local means noise reduction algorithm with acceleration function for improvement of image quality in gamma camera system: a phantom study
摘要： Gamma-ray images generally suffer from a lot of noise because of low photon detection in the gamma camera system. The purpose of this study is to improve the image quality in gamma-ray images using a gamma camera system with a fast nonlocal means (FNLM) noise reduction algorithm with an acceleration function. The designed FNLM algorithm is based on local region considerations, including the Euclidean distance in the gamma-ray image and use of the encoded information. To evaluate the noise characteristics, the normalized noise power spectrum (NNPS), contrast-to-noise ratio (CNR), and coefficient of variation (COV) were used. According to the NNPS result, the lowest values can be obtained using the FNLM noise reduction algorithm. In addition, when the conventional methods and the FNLM noise reduction algorithm were compared, the average CNR and COV using the proposed algorithm were approximately 2.23 and 7.95 times better than those of the noisy image, respectively. In particular, the image-processing time of the FNLM noise reduction algorithm can achieve the fastest time compared with conventional noise reduction methods. The results of the image qualities related to noise characteristics demonstrated the superiority of the proposed FNLM noise reduction algorithm in a gamma camera system.
关键词： Medical application,Noise reduction algorithm,Evaluation of image quality,Total variation noise reduction method,Gamma camera system
更新于2025-09-23 15:19:57
-
Effects of MgO Nanocrystal Powder on Long-Term Sustain and Address Discharge Characteristics in ac-Plasma Display Panel
摘要： We investigated the characteristics of MgO surface with MgO nanocrystal powders due to the long-term (500 hours) ion bombardment comparing with the conventional MgO surface in this study. When the MgO nanocrystal powders were coated on the conventional MgO surface, it was observed that the sputtered Mg particles from MgO surface were re-deposited on the MgO nanocrystal powders, which was able to significantly suppress the re-crystallization on the phosphor layers. We confirm that the MgO nanocrystal powders play a significant role in suppressing the degradation of the MgO surface and phosphor layer after long-term severe ion bombardments. Accordingly, when the MgO nanocrystal powers were applied to the conventional MgO surface, the variations of discharge characteristics, such as address discharge delay time, firing voltage of sustain and address discharge, and luminance, were significantly reduced comparing with the conventional MgO surface.
关键词： Plasma Display Panel,Long-Term Discharge Characteristics,Plasma Application,MgO Surface,MgO Crystal Powder
更新于2025-09-19 17:15:36
-
Studies on As-synthesized Graphene Oxide Flakes
摘要： Background: Due to the single atomic layer, flexible material, easily tuned of band gap, easily reduced to reduced graphene oxide, graphene oxide (GO) have a lot of application for Electronics, Biosensors, Biomedical application. Objective: The goal of the present work is to study the electrochemical properties of graphene oxide flakes. Method: In the present work, we synthesis of graphene oxide using modified hummer techniques. The morphological and structural characterization of as-prepared GO was investigated with the help of XRD, SEM, FTIR, UV, CV. Results: The XRD patterns of As-prepared graphene oxide (GO) flakes shows a peak at 11.2°, and the calculated value of lattice parameter comes out to be 15.56 A°. The peaks in the Raman spectrum are observed at 1599 cm-1 and 1349 cm-1, which confirms the lattice distortion in the graphene oxide (GO). The peaks in the FTIR spectrum of graphene oxide (GO) observed at, 3636 cm-1, 1753 cm-1, 1649 cm-1, 1456 cm-1, and 1177 cm-1 are attributed to O-H, C=O, C=C, C-OH, C-O bonds, respectively. The electrochemical studies of graphene oxide (GO) modified ITO electrode shows an improvement in the electrochemical parameters. Conclusion: We have prepared the graphene oxide by modified Hummers method. According to the electrochemical studies, graphene oxide (GO) modified ITO electrode is an excellent medium for the fast electron transfer between an electrode surface and electrolyte. On the basis of these studies, it is suggested that graphene oxide may be a best material for the fabrication of biosensors.
关键词： electrochemical studies,FTIR spectrum,Graphene oxide,raman spectrum,Biosensors,Biomedical application
更新于2025-09-19 17:15:36
-
[IEEE 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC) - Chicago, IL, USA (2019.6.16-2019.6.21)] 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC) - Get rid of S-kink in MZO/CdTe Solar Cells by Performing CdCl <sub/>2</sub> Annealing without Oxygen
摘要： This paper investigates the system performance evaluation framework of systematic rateless-coded (SRCed) transmissions for user experience in future 5G systems. To this end, we define the application-layer information loss ratio (AILR), i.e., the ratio of the number of unsuccessfully decoded messages to that of the total transmitted messages, as a system performance index from the perspective over network application layer, which can be used as an evaluation framework on the users’ experience in the viewpoint of 5G transmission systems. By using the integer partition theory, we analytically derive some theoretical results and then obtain an exact expression of the AILR for SRCed transmissions. Simulation and numerical results are provided to demonstrate the validness of our analytical results, which also show that the SRCed transmission achieves much better system performance than existing coded transmission methods in terms of AILR. Moreover, by using our presented AILR expression, the proper system configuration can be easily determined without a heavy burden of Monte Carlo simulations. It also illustrates some inherent relationships between system parameters by using SRCed transmission on application layer, which can be easily carried out to achieve a better performance in the viewpoint of users’ experiences. First, for a given channel condition, the larger the message length is, the smaller the ratio of the message length to the source symbol length should be selected. Second, for a given message length, the better the channel condition is, the larger the ratio of the message length to the source symbol length should be selected.
关键词： fountain codes,application-layer performance,application-layer information loss ratio,user experience,Rateless codes,systematic rateless-coded transmissions
更新于2025-09-19 17:13:59
-
[IEEE 2019 IEEE 13th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG) - Sonderborg, Denmark (2019.4.23-2019.4.25)] 2019 IEEE 13th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG) - An Overview of Photovoltaic Microinverters: Topology, Efficiency, and Reliability
摘要： This paper presents an overview of microinverters used in photovoltaic (PV) applications. Conventional PV string inverters cannot effectively track the optimum maximum power point (MPP) of the PV string due to the series con?guration (especially, under partial shading conditions). In order to tackle this problem, microinverters make each PV panel operate at its own MPP so that the overall ef?ciency can be improved. In this paper, a detailed analysis is carried out among commercially-available microinverters in terms of topological structure and operational principle. Moreover, the latest products on the microinverter market and future trends of the microinverters are discussed in terms of ef?ciency and reliability.
关键词： microinverter,?yback converter,DC-DC inverter,PV application,DC-AC inverter
更新于2025-09-19 17:13:59
-
[IEEE 2019 IEEE 8th International Conference on Advanced Optoelectronics and Lasers (CAOL) - Sozopol, Bulgaria (2019.9.6-2019.9.8)] 2019 IEEE 8th International Conference on Advanced Optoelectronics and Lasers (CAOL) - Computed tomography dataset analysis for stereotaxic neurosurgery navigation
摘要： First-ever 28 nm embedded split-gate MONOS (SG-MONOS) ?ash macros have been developed to increase memory capacity embedded in micro controller units and to improve performance over wide junction temperature range from C to 170 C as demanded strongly in automotive uses. Much attention has been paid to the degradation of the reliability characteristics along with the process shrinkage. Temperature-adjusted word-line overdrive scheme improves random read access frequency by 15% and realizes both of 6.4 GB/s read throughput by 200 MHz no-wait random access of code ?ash macros and more than ten times longer TDDB lifetime of WL drivers. Temperature-adaptive step pulse erase control (TASPEC) improves the TDDB lifetime of dielectric ?lms between metal interconnect layers by three times. TASPEC is particularly useful for a data ?ash macro with one million rewrite cycles. Source-side injection (SSI) program with negative back-bias voltage achieves 63% reduction of program pulse time and, consequently, realizes 2.0 MB/s write throughput of code ?ash macros. A spread spectrum clock generation and a clock phase shift technique are introduced for charge pump clock generation in order to suppress EMI noise due to high write throughput of code ?ash macros, and peak power of EMI noise is reduced by 19 dB.
关键词： high-temperature operation,time dependent dielectric breakdown,Automotive application,high reliability,spread spectrum clock generation,word-line over-drive,split-gate MONOS(SG-MONOS),embedded ?ash memory,Fast random read operation
更新于2025-09-19 17:13:59
-
[IEEE 2018 IEEE 8th International Conference Nanomaterials: Application & Properties (NAP) - Zatoka, Ukraine (2018.9.9-2018.9.14)] 2018 IEEE 8th International Conference Nanomaterials: Application & Properties (NAP) - Silicon Hyperdoped with Selenium by Ion Implantation Followed by Pulsed Laser Annealing
摘要： The Synthetic Biology Open Language (SBOL) is an emerging data standard for representing synthetic biology designs. The goal of SBOL is to improve the reproducibility of these designs and their electronic exchange between researchers and/or genetic design automation tools. The latest version of the standard, SBOL 2.0, enables the annotation of a large variety of biological components (e.g., DNA, RNA, proteins, complexes, small molecules, etc.) and their interactions. SBOL 2.0 also allows researchers to organize components into hierarchical modules, to specify their intended functions, and to link modules to models that describe their behavior mathematically. To support the use of SBOL 2.0, we have developed the libSBOLj 2.0 Java library, which provides an easy to use Application Programming Interface (API) for developers, including manipulation of SBOL constructs, serialization to and from an RDF/XML file format, and migration support in the form of conversion from the prior SBOL 1.1 standard to SBOL 2.0. This letter describes the libSBOLj 2.0 library and key engineering decisions involved in its design.
关键词： software tools,synthetic biology,computational biology,Application programming interfaces,software libraries
更新于2025-09-19 17:13:59
-
Highly biocompatible graphene quantum dots: green synthesis, toxicity comparison and fluorescence imaging
摘要： Graphene quantum dots (GQDs) have tremendous potential in biological imaging due to their bright visible photoluminescence mission. However, the tedious preparation procedures and potential toxicity of GQDs greatly limit their application in biological field. Here, highly biocompatible GQDs (HGQDs) have been successfully prepared only by glucose in aqueous solution. Compared with GQDs prepared from conventional methods (CGQDs), the cytotoxicity of HGQDs reduced by more than 60%, and the flow cytometric analysis of the normal cells treated with HGQDs showed that the early and late apoptotic rate reduced by more than 72% and 40%, respectively. In vitro fluorescence imaging showed that both cells and bacteria could be imaged by HGQDs, and the morphology of cells and bacteria could be kept to a maximum extent. A long-term in vivo study revealed that no obvious organ (heart, liver, spleen, lung and kidney) damage or lesions were observed, and the blood–brain barrier (BBB) could be overcome, which provides the possibility for treatment and diagnosis of brain-related diseases. With adequate studies of biocompatibility, both in vitro and in vivo, HGQDs may be considered for further biological application.
关键词： biocompatibility,biological application,fluorescence imaging,Graphene quantum dots
更新于2025-09-19 17:13:59
-
[IEEE 2019 IEEE CPMT Symposium Japan (ICSJ) - Kyoto, Japan (2019.11.18-2019.11.20)] 2019 IEEE CPMT Symposium Japan (ICSJ) - Effect of Sidewall Roughness on Polymer Waveguide for Optical Interconnects Application
摘要： The Synthetic Biology Open Language (SBOL) is an emerging data standard for representing synthetic biology designs. The goal of SBOL is to improve the reproducibility of these designs and their electronic exchange between researchers and/or genetic design automation tools. The latest version of the standard, SBOL 2.0, enables the annotation of a large variety of biological components (e.g., DNA, RNA, proteins, complexes, small molecules, etc.) and their interactions. SBOL 2.0 also allows researchers to organize components into hierarchical modules, to specify their intended functions, and to link modules to models that describe their behavior mathematically. To support the use of SBOL 2.0, we have developed the libSBOLj 2.0 Java library, which provides an easy to use Application Programming Interface (API) for developers, including manipulation of SBOL constructs, serialization to and from an RDF/XML file format, and migration support in the form of conversion from the prior SBOL 1.1 standard to SBOL 2.0. This letter describes the libSBOLj 2.0 library and key engineering decisions involved in its design.
关键词： software tools,synthetic biology,computational biology,Application programming interfaces,software libraries
更新于2025-09-19 17:13:59