I. Wuled Lenggoro
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View article: Evaluation of Microplastic Particle Size Distribution: A Study of the Buoyancy Weighing Bar Method with Variations in Weighing Bar Shape and Suspension Concentration
Evaluation of Microplastic Particle Size Distribution: A Study of the Buoyancy Weighing Bar Method with Variations in Weighing Bar Shape and Suspension Concentration Open
The buoyancy weighing-bar method (BWM) is an innovative method used to estimate the size distribution of floating particles, particularly microplastics. Apart from its easy operation, the BWM is capable of generating precise results when d…
View article: Shapes in submicron ammonium sulfate particles after long-term exposure on tree leaves
Shapes in submicron ammonium sulfate particles after long-term exposure on tree leaves Open
Assessing the effects of air pollutants, including aerosols, on trees is important for protecting forests in the future. This study determined the adsorption of particles on trees after 1- or 2-year long-term exposure (for 1 or 2 h/day) to…
View article: Candle soot colloids enhance tomato (Solanum lycopersicum) seed germination and seedling quality
Candle soot colloids enhance tomato (Solanum lycopersicum) seed germination and seedling quality Open
The effect of candle soot colloids, a novel nanomaterial from candle combustion that we developed previously, on tomato ( Solanum lycopersicum ) seed germination and seedling vigor was investigated. Candle soot colloids were applied at dif…
View article: Transport of Nanoparticles into Plants and Their Detection Methods
Transport of Nanoparticles into Plants and Their Detection Methods Open
Nanoparticle transport into plants is an evolving field of research with diverse applications in agriculture and biotechnology. This article provides an overview of the challenges and prospects associated with the transport of nanoparticle…
View article: Nanopriming of Tomato (<i>Solanum lycopersicum</i>) Seeds Against Heavy Metal Stress During Germination and Seedling Formation
Nanopriming of Tomato (<i>Solanum lycopersicum</i>) Seeds Against Heavy Metal Stress During Germination and Seedling Formation Open
Abiotic stress can have a negative impact on plant growth. Heavy metal is one of the examples. One approach to overcome this issue is to use seed priming. The priming used in this study was nanopriming. We used colloidal silica nanoparticl…
View article: Comparative analysis of germination performance from several species of seeds under influence of silica nanoparticles
Comparative analysis of germination performance from several species of seeds under influence of silica nanoparticles Open
The first and most critical phase in growing crops is seed germination. Failure and slower germination process may have an impact on productivity. As a result, numerous strategies are needed to hasten germination and improving the quality …
View article: Observation of viscous liquid flow in tobacco substrate during heating using optical coherence tomography
Observation of viscous liquid flow in tobacco substrate during heating using optical coherence tomography Open
The present study used optical coherence tomography (OCT) to monitor the dynamics of a highly viscous liquid in a porous tobacco substrate during heating. The OCT technique was integrated with a specially designed heating chamber and an ai…
View article: The Role of Silica Nanoparticles in Promoting the Germination of Tomato (Solanum lycopersicum) Seeds
The Role of Silica Nanoparticles in Promoting the Germination of Tomato (Solanum lycopersicum) Seeds Open
The addition of nanoparticles has been reported to be an effective strategy for enhancing seed germination, but the underlying mechanisms whereby this occurs are unclear. In the present study, we added silica nanoparticles (SiNPs) to an aq…
View article: Synthesis and Dissolution of Particles for Advanced Mass Transport in Plant Bodies
Synthesis and Dissolution of Particles for Advanced Mass Transport in Plant Bodies Open
食糧生産に不可欠な肥料は，土壌に散布された量に対して植物に吸収される量は半分に満たないと報告されている．効率的な肥料の吸収方法として植物の葉から肥料を吸収させる方法がある．しかし，肥料が溶解した水溶液の状態での輸送方法は多量要素には適用できない．本研究では固体状態で粒子を輸送し，葉上での粒子の溶解を制御することを目指し，合成した多成分系粒子の結晶構造などの特性が，溶解特性に与える影響を調べた．
View article: Applications of Silica Nanoparticles in Tomatoes to Overcome Drought Stress
Applications of Silica Nanoparticles in Tomatoes to Overcome Drought Stress Open
水不足は植物に（干ばつ）ストレスを与えるが，そのストレスが発芽段階から発生する可能性がある．ストレスを「緩和」するために，ナノ粒子によって種子表面を被覆させる“種子プライミング法”が提案されているが，明確なメカニズムが明らかになっていない．本研究では，トマトの種子と粒径が10 nm前後のシリカ粒子の懸濁液を研究対象にした．ストレスのシミュレーターとして，発芽培地に濃度10～20 wt%のポリエチレングリコール（20,000）を使用した．シリカナノ粒子の使用により，トマトの種…
View article: A plant growth chamber system equipped with aerosol generators for studying aerosol-vegetation interactions
A plant growth chamber system equipped with aerosol generators for studying aerosol-vegetation interactions Open
Understanding aerosol-vegetation interactions is vital in ecosystems. However, the interactions remain elusive partly due to the lack of suitable plant growth chamber systems. Particularly, deposition of submicron particles on leaf surface…
View article: Green Synthesis of Flower-Like Carrageenan-Silver Nanoparticles and Elucidation of Its Physicochemical and Antibacterial Properties
Green Synthesis of Flower-Like Carrageenan-Silver Nanoparticles and Elucidation of Its Physicochemical and Antibacterial Properties Open
Herein, we report the green synthesis of flower-like carrageenan-silver nanoparticles (c-AgNPs) through a facile hydrothermal reaction at 90 °C for 2 h. The reduction of silver nitrate (AgNO3) to c-AgNPs was evident by the colour change of…
View article: The development of simple microcontroller-based QCM with some treatment on the crystal oscillator surface
The development of simple microcontroller-based QCM with some treatment on the crystal oscillator surface Open
The low-cost quartz crystal microbalance (QCM) instrument with the microcontroller as the basis of the embedded system of the frequency counter was implemented. The system uses a quartz crystal transducer from the crystal oscillator compon…
View article: Isolation of Cellulose Nanocrystals from Banana Peel Using One-Pot Microwave and Mild Oxidative Hydrolysis System
Isolation of Cellulose Nanocrystals from Banana Peel Using One-Pot Microwave and Mild Oxidative Hydrolysis System Open
The current investigation deals with the application of a one-pot system to facilitate the production of cellulose nanocrystals (CNCs) from banana peel by a combination of microwave pre-treatment and mild oxidative hydrolysis with hydrogen…
View article: Physicochemical Properties of Ananas comosus Powder with Addition of Centella asiatica (L.) in Spray Drying
Physicochemical Properties of Ananas comosus Powder with Addition of Centella asiatica (L.) in Spray Drying Open
This research was conducted to identify the physical properties of spray dried Ananas comosus powder added with Cantella asiatica.L (CAL).The spray drying inlet temperature from 130 o C to 150 o C and various CAL concentration (0-15%, w/w)…
View article: Liquid Transport of Heated Glycerol-Water Mixtures with Colloidal Fluorescent Particles through Multiple Biomass Layers
Liquid Transport of Heated Glycerol-Water Mixtures with Colloidal Fluorescent Particles through Multiple Biomass Layers Open
In this study, we report for the first time the use of colloidal fluorescent submicrometer-sized particles as tracers for microliter liquid transport through multilayered biomass. We showed that the in-plane spread and the trans-planar pen…
View article: Recent Development and Environmental Applications of Nanocellulose-Based Membranes
Recent Development and Environmental Applications of Nanocellulose-Based Membranes Open
Extensive research and development in the production of nanocellulose production, a green, bio-based, and renewable biomaterial has paved the way for the development of advanced functional materials for a multitude of applications. From a …
View article: Surface treatment of clayey soil particles for reducing water loss through evaporation
Surface treatment of clayey soil particles for reducing water loss through evaporation Open
To conserve water in crop production and landscaping, plastic mulch or sheets are commonly used. However, the environmental impact of plastic waste is a concern. Therefore, herein we report that a silane coupling agents-based coating can b…
View article: Nanocellulose from oil palm mesocarp fiber using hydrothermal treatment with low concentration of oxalic acid
Nanocellulose from oil palm mesocarp fiber using hydrothermal treatment with low concentration of oxalic acid Open
Nanocellulose from oil palm mesocarp fiber (OPMF) was isolated using hydrothermal treatment at a pressure of 150 kPa and 120 °C coupled with hydrolysis of low concentration of weak acid i.e. oxalic acid dihydrate (OAD). Two different conce…
View article: Growth-controlled synthesis of polymer-coated colloidal-gold nanoparticles using electrospray-based chemical reduction
Growth-controlled synthesis of polymer-coated colloidal-gold nanoparticles using electrospray-based chemical reduction Open
In this study, the controlled nucleation and growth of gold nanoparticles (GNPs) were investigated using a self-repelled mist in a liquid chemical reaction environment. An electrospray-based chemical reduction method was conducted in the a…
View article: Isolation of nanocellulose from Saba’ (Musa acuminata x balbisiana) banana peel by one-pot oxidation-hydrolysis system
Isolation of nanocellulose from Saba’ (Musa acuminata x balbisiana) banana peel by one-pot oxidation-hydrolysis system Open
In the present study, facile one-pot production of nanocellulose from ripe and unripe Saba’ banana (Musa acuminata x balbisiana) peel was conducted by utilizing hydrogen peroxide (H2O2) as an oxidizing agent prior to hydrolysis with sulfur…
View article: Deposition of ultrasonic nebulized aerosols onto a hydrophilic surface
Deposition of ultrasonic nebulized aerosols onto a hydrophilic surface Open
The effect of chemical treatment of a metallic substrate on the deposition of aerosols generated by an ultrasonic nebulizer was investigated. A single substrate with areas having different “level” of hydrophilicity (or hydrophobicity) was …
View article: Visualization and Localization of Submicron-Sized Ammonium Sulfate Particles on Needles of Japanese Larch (Larix kaempferi) and Japanese Cedar (Cryptomeria japonica) and Leaves of Japanese Beech (Fagus crenata) and Japanese Chinquapin (Castanopsis sieboldii) after Artificial Exposure
Visualization and Localization of Submicron-Sized Ammonium Sulfate Particles on Needles of Japanese Larch (Larix kaempferi) and Japanese Cedar (Cryptomeria japonica) and Leaves of Japanese Beech (Fagus crenata) and Japanese Chinquapin (Castanopsis sieboldii) after Artificial Exposure Open
We applied a method combining field-emission scanning electron microscopy (FE-SEM) with energy dispersive X-ray spectrometry (EDX) to visualize the deposition and localization of the submicron-sized ammonium sulfate (AS) particles. The AS …
View article: Shinyei Based Sensor with Added Roof Enhanced Detection of Indoor Particulate Matter
Shinyei Based Sensor with Added Roof Enhanced Detection of Indoor Particulate Matter Open
Commercially available monitoring systems in the market are expensive and rather challenging to maintain, had prompted researchers to invent low-cost monitoring system as alternative. New cost-effective, portable and user-friendly prototyp…
View article: Development of low-cost and user-friendly sustainable portable particulate sensor
Development of low-cost and user-friendly sustainable portable particulate sensor Open
Particulate Matter (PM) has various effects on the quality of air, health, and environment. A newly developed on-line PM10 (particulate matter less than 10 μm) measurement using Arduino as the microcontroller which has multi-connections wa…
View article: Carbonaceous Nanoparticle Layers Prepared using Candle Soot by Direct- and Spray-based Depositions
Carbonaceous Nanoparticle Layers Prepared using Candle Soot by Direct- and Spray-based Depositions Open
To investigate the properties and structures of soot particles derived from candle combustion, two deposition routes were performed. In "Route-1," the aerosol (soot) particles were collected by direct exposure of a substrate in a chamber w…
View article: Nanoparticles Carrying Biological Molecules: Recent Advances and Applications
Nanoparticles Carrying Biological Molecules: Recent Advances and Applications Open
In the past few decades, enormous advances have been achieved in the field of particle technology and the trend has been shifted from macro to micro and recently to the nanoscale. Integration of nanotechnology and biotechnology has paved t…
View article: Preparation and Characterisation of Cyclodextrin Glucanotransferase Enzyme Immobilised in Electrospun Nanofibrous Membrane
Preparation and Characterisation of Cyclodextrin Glucanotransferase Enzyme Immobilised in Electrospun Nanofibrous Membrane Open
An industrial enzyme, Cyclodextrin glucanotransferase (CGTase), was immobilised in polyvinyl alcohol (PVA) nanofiber (average diameter around 200 nm) membrane via co-electrospinning of the CGTase/PVA mixture followed with glutaraldehyde va…
View article: Fine Coal Ash Collection Efficiency of Advanced Low Temperature Electrostatic Precipitator on Pulverized Coal Combustion
Fine Coal Ash Collection Efficiency of Advanced Low Temperature Electrostatic Precipitator on Pulverized Coal Combustion Open
Electrostatic precipitator (ESP) is a major dust collection equipment in pulverized coal combustion boiler in Japan. As the environmental influence of fine particle such as PM2.5 in the atmosphere is focused recently, the improvement of th…
View article: Immobilisation of cyclodextrin glucanotransferase into polyvinyl alcohol (PVA) nanofibres via electrospinning
Immobilisation of cyclodextrin glucanotransferase into polyvinyl alcohol (PVA) nanofibres via electrospinning Open
Immobilisation of cyclodextrin glucanotransferase (CGTase) on nanofibres was demonstrated. CGTase solution (1% v/v) and PVA (8 wt%) solution were mixed followed by electrospinning (-9 kV, 3 h). CGTase/PVA nanofibres with an average diamete…