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Papers by Samsoon Maharifa

Mokuzai Gakkaishi, 2021

This study aims to clarify the influence of the rate of high-temperature setting on the strength ... more This study aims to clarify the influence of the rate of high-temperature setting on the strength properties of sugi (Cryptomeria japonica) boxed-heart square lumber with pith. Past experimental data of strength properties of sugi boxed-heart square lumber with pith treated with different rates of hightemperature setting were analyzed by Bayesian statistical modeling. The data consist of bending strength and shear strength in relation to four different drying conditions, namely three different hightemperature settings for 24, 36, 48 h with dry-bulb temperature of 120 °C and wet-bulb temperature of 90 °C, combined with subsequent conventional kiln drying, as well as air-drying for 18 months. The developed model revealed that both the bending strength and shear strength decreased by hightemperature settings for more than 24 h and subsequent kiln drying. Based on the strength for airdrying, the rate of decrease in bending strength for the treatment times of 24, 36, 48 h was 7.6%, 8.3%, 21.3% on average, respectively. Meanwhile, the rate of decrease in shear strength for the treatment times of 24, 36, 48 h was 13.9%, 19.4%, 22.1% on average, respectively. These quantitative findings are useful in determining an appropriate high-temperature setting of treatment time for sugi boxed-heart square lumber with pith.

Isolation of Bacteria from Marine Environment and Screening of Biosurfactant Production by using The Isolated Bacteria

Crude oil is a major threatening to the marine environment. In this present study four bacterial ... more Crude oil is a major threatening to the marine environment. In this present study four bacterial strains were isolate from the marine water sample. And the strains were subjected to detect the presence of biosurfactant production. Biosurfactant production is helps the bacteria to degrade the crude oil. The biosurfactant production were screened by using the BATH assay, Drop collapse test, oil spreading assay and CTAB agar plate method were performed for assessment of biosurfactant ability. The result showed that the all the four strains were biosurfactant activity. This study reveals that the isolated strains has the ability to produce biosurfactant production. Keywords- Bacteria – Crude oil – Biosurfactant production

Applied Biochemistry and Biotechnology, Jan 11, 2022

Alzheimer's disease is a life-threatening neurodegenerative disorder. About 50 million people acr... more Alzheimer's disease is a life-threatening neurodegenerative disorder. About 50 million people across the globe are affected by this disease. At final stages, this disease causes patients to lose cognitive ability, memory, and brain cells to the point of being totally dependent on other individuals for livelihood. The incidence of this disease is increasing across the world in the recent years, making the need of a better drug an urgency. Existing drugs show various side effects and natural sources of medicinal drugs are being explored. In this study, we explore the activity of natural compounds isolated through GC-MS analysis from the haustoria of palmyra palm against two major Alzheimer's disease-causing enzymes, β-secretase and acetylcholinesterase. The binding affinity of these compounds against the target proteins and their pharmacokinetic properties were checked. Among the 37 compounds docked, 5 compounds showed good binding affinity and pharmacokinetic properties. These natural compounds showed a potential as a drug against Alzheimer's disease. Further research is needed to study the synergistic activity of the compounds in live cells.

international conference on software and data technologies, 2010

We introduce the problem of mining sequential patterns among timed messages in large database of ... more We introduce the problem of mining sequential patterns among timed messages in large database of sequences using a Stochastic Approach. An example of patterns we are interested in is : 50% of cases of engine stops in the car are happened between 0 and 2 minutes after observing a lack of the gas in the engine, produced between 0 and 1 minutes after the fuel tank is empty. We call this patterns "signatures". Previous research have considered some equivalent patterns, but such work have three mains problems : (1) the sensibility of their algorithms with the value of their parameters, (2) too large number of discovered patterns, and (3) their discovered patterns consider only "after" relation (succession in time) and omit temporal constraints between elements in patterns. To address this issue, we present TOM4L process (Timed Observations Mining for Learning process) which uses a stochastic representation of a given set of sequences on which an inductive reasoning coupled with an abductive reasoning is applied to reduce the space search. A very simple example is used to show the efficiency of the TOM4L process against others literature approaches.

Bewegungstechnik

Bewegungstechnik, 2021

Phytotoxicity assessment of synthesized green nanosuspension on germination and growth in Vigna radiata

Inorganic and Nano-Metal Chemistry, 2021

In Silico Molecular Docking Approach Against Enzymes Causing Alzheimer’s Disease Using Borassus Flabellifer Linn

Alzheimer’s disease is a life-threatening neurodegenerative disorder. About 50 million people acr... more Alzheimer’s disease is a life-threatening neurodegenerative disorder. About 50 million people across the globe are affected by this disease. At final stages, this disease causes patients to lose cognitive ability, memory and brain cells to the point of being totally depend on other individuals for livelihood. The incidence of this disease is increasing across the world in the recent years, making the need of a better drug an urgency. Existing drugs show various side-effects and natural sources of medicinal drugs are being explored. In this study, we explore the activity of natural compounds isolated through GCMS analysis from the haustoria of palmyra palm against two major Alzheimer’s disease-causing enzymes, β-amyloid and Acetylcholinesterase. The binding affinity of these compounds against the target proteins and their pharmacokinetic properties were checked. Among the 37 compounds docked, 5 compounds showed good binding affinity and pharmacokinetic properties. These natural compo...

Comparative Study of Agarophytes - Gracilaria edulis and Gelidiella acerosa as Biostimulant and Application of Agar for Water-holding in Soil and Plant Growth Promotion

Agricultural Science Digest - A Research Journal

Background: Seaweeds and its derivatives are extensively used as biostimulants in horticulture an... more Background: Seaweeds and its derivatives are extensively used as biostimulants in horticulture and agriculture as a replacement for chemical fertilizers. G. edulis and G. acerosa are easily cultivable and economically important seaweeds. They are a rich source of phytohormones, amino acids, antibiotics, vitamins, micro, macro elements and agar. Such natural products have great demand and been commercialized these days to promote sustainable agriculture. Dried and finely powdered algal biomass is used directly as a biostimulant. Algal polysaccharides such as agar can be an innovative alternative to synthetic polymers used in horticulture as they contain active biostimulant compounds and also reported to hold water in the soil that aids plant growth with minimum water consumption than usually required. A. aritis being one of the most consumed leafy vegetables throughout the world can be harvested indoors with added nutrients and minimal water utilization.Methods: The field trial is a ...

Comparative Study of Agarophytes - Gracilaria edulis and Gelidiella acerosa as Biostimulant and Application of Agar for Water-holding in Soil and Plant Growth Promotion

Agricultural Science Digest - A Research Journal

Background: Seaweeds and its derivatives are extensively used as biostimulants in horticulture an... more Background: Seaweeds and its derivatives are extensively used as biostimulants in horticulture and agriculture as a replacement for chemical fertilizers. G. edulis and G. acerosa are easily cultivable and economically important seaweeds. They are a rich source of phytohormones, amino acids, antibiotics, vitamins, micro, macro elements and agar. Such natural products have great demand and been commercialized these days to promote sustainable agriculture. Dried and finely powdered algal biomass is used directly as a biostimulant. Algal polysaccharides such as agar can be an innovative alternative to synthetic polymers used in horticulture as they contain active biostimulant compounds and also reported to hold water in the soil that aids plant growth with minimum water consumption than usually required. A. aritis being one of the most consumed leafy vegetables throughout the world can be harvested indoors with added nutrients and minimal water utilization.Methods: The field trial is a ...

Mokuzai Gakkaishi, 2021

This study aims to clarify the influence of the rate of high-temperature setting on the strength ... more This study aims to clarify the influence of the rate of high-temperature setting on the strength properties of sugi (Cryptomeria japonica) boxed-heart square lumber with pith. Past experimental data of strength properties of sugi boxed-heart square lumber with pith treated with different rates of hightemperature setting were analyzed by Bayesian statistical modeling. The data consist of bending strength and shear strength in relation to four different drying conditions, namely three different hightemperature settings for 24, 36, 48 h with dry-bulb temperature of 120 °C and wet-bulb temperature of 90 °C, combined with subsequent conventional kiln drying, as well as air-drying for 18 months. The developed model revealed that both the bending strength and shear strength decreased by hightemperature settings for more than 24 h and subsequent kiln drying. Based on the strength for airdrying, the rate of decrease in bending strength for the treatment times of 24, 36, 48 h was 7.6%, 8.3%, 21.3% on average, respectively. Meanwhile, the rate of decrease in shear strength for the treatment times of 24, 36, 48 h was 13.9%, 19.4%, 22.1% on average, respectively. These quantitative findings are useful in determining an appropriate high-temperature setting of treatment time for sugi boxed-heart square lumber with pith.

Isolation of Bacteria from Marine Environment and Screening of Biosurfactant Production by using The Isolated Bacteria

Crude oil is a major threatening to the marine environment. In this present study four bacterial ... more Crude oil is a major threatening to the marine environment. In this present study four bacterial strains were isolate from the marine water sample. And the strains were subjected to detect the presence of biosurfactant production. Biosurfactant production is helps the bacteria to degrade the crude oil. The biosurfactant production were screened by using the BATH assay, Drop collapse test, oil spreading assay and CTAB agar plate method were performed for assessment of biosurfactant ability. The result showed that the all the four strains were biosurfactant activity. This study reveals that the isolated strains has the ability to produce biosurfactant production. Keywords- Bacteria – Crude oil – Biosurfactant production

Applied Biochemistry and Biotechnology, Jan 11, 2022

Alzheimer's disease is a life-threatening neurodegenerative disorder. About 50 million people acr... more Alzheimer's disease is a life-threatening neurodegenerative disorder. About 50 million people across the globe are affected by this disease. At final stages, this disease causes patients to lose cognitive ability, memory, and brain cells to the point of being totally dependent on other individuals for livelihood. The incidence of this disease is increasing across the world in the recent years, making the need of a better drug an urgency. Existing drugs show various side effects and natural sources of medicinal drugs are being explored. In this study, we explore the activity of natural compounds isolated through GC-MS analysis from the haustoria of palmyra palm against two major Alzheimer's disease-causing enzymes, β-secretase and acetylcholinesterase. The binding affinity of these compounds against the target proteins and their pharmacokinetic properties were checked. Among the 37 compounds docked, 5 compounds showed good binding affinity and pharmacokinetic properties. These natural compounds showed a potential as a drug against Alzheimer's disease. Further research is needed to study the synergistic activity of the compounds in live cells.

international conference on software and data technologies, 2010

We introduce the problem of mining sequential patterns among timed messages in large database of ... more We introduce the problem of mining sequential patterns among timed messages in large database of sequences using a Stochastic Approach. An example of patterns we are interested in is : 50% of cases of engine stops in the car are happened between 0 and 2 minutes after observing a lack of the gas in the engine, produced between 0 and 1 minutes after the fuel tank is empty. We call this patterns "signatures". Previous research have considered some equivalent patterns, but such work have three mains problems : (1) the sensibility of their algorithms with the value of their parameters, (2) too large number of discovered patterns, and (3) their discovered patterns consider only "after" relation (succession in time) and omit temporal constraints between elements in patterns. To address this issue, we present TOM4L process (Timed Observations Mining for Learning process) which uses a stochastic representation of a given set of sequences on which an inductive reasoning coupled with an abductive reasoning is applied to reduce the space search. A very simple example is used to show the efficiency of the TOM4L process against others literature approaches.

Bewegungstechnik

Bewegungstechnik, 2021

Phytotoxicity assessment of synthesized green nanosuspension on germination and growth in Vigna radiata

Inorganic and Nano-Metal Chemistry, 2021

In Silico Molecular Docking Approach Against Enzymes Causing Alzheimer’s Disease Using Borassus Flabellifer Linn

Alzheimer’s disease is a life-threatening neurodegenerative disorder. About 50 million people acr... more Alzheimer’s disease is a life-threatening neurodegenerative disorder. About 50 million people across the globe are affected by this disease. At final stages, this disease causes patients to lose cognitive ability, memory and brain cells to the point of being totally depend on other individuals for livelihood. The incidence of this disease is increasing across the world in the recent years, making the need of a better drug an urgency. Existing drugs show various side-effects and natural sources of medicinal drugs are being explored. In this study, we explore the activity of natural compounds isolated through GCMS analysis from the haustoria of palmyra palm against two major Alzheimer’s disease-causing enzymes, β-amyloid and Acetylcholinesterase. The binding affinity of these compounds against the target proteins and their pharmacokinetic properties were checked. Among the 37 compounds docked, 5 compounds showed good binding affinity and pharmacokinetic properties. These natural compo...

Comparative Study of Agarophytes - Gracilaria edulis and Gelidiella acerosa as Biostimulant and Application of Agar for Water-holding in Soil and Plant Growth Promotion

Agricultural Science Digest - A Research Journal

Background: Seaweeds and its derivatives are extensively used as biostimulants in horticulture an... more Background: Seaweeds and its derivatives are extensively used as biostimulants in horticulture and agriculture as a replacement for chemical fertilizers. G. edulis and G. acerosa are easily cultivable and economically important seaweeds. They are a rich source of phytohormones, amino acids, antibiotics, vitamins, micro, macro elements and agar. Such natural products have great demand and been commercialized these days to promote sustainable agriculture. Dried and finely powdered algal biomass is used directly as a biostimulant. Algal polysaccharides such as agar can be an innovative alternative to synthetic polymers used in horticulture as they contain active biostimulant compounds and also reported to hold water in the soil that aids plant growth with minimum water consumption than usually required. A. aritis being one of the most consumed leafy vegetables throughout the world can be harvested indoors with added nutrients and minimal water utilization.Methods: The field trial is a ...

Comparative Study of Agarophytes - Gracilaria edulis and Gelidiella acerosa as Biostimulant and Application of Agar for Water-holding in Soil and Plant Growth Promotion

Agricultural Science Digest - A Research Journal

Background: Seaweeds and its derivatives are extensively used as biostimulants in horticulture an... more Background: Seaweeds and its derivatives are extensively used as biostimulants in horticulture and agriculture as a replacement for chemical fertilizers. G. edulis and G. acerosa are easily cultivable and economically important seaweeds. They are a rich source of phytohormones, amino acids, antibiotics, vitamins, micro, macro elements and agar. Such natural products have great demand and been commercialized these days to promote sustainable agriculture. Dried and finely powdered algal biomass is used directly as a biostimulant. Algal polysaccharides such as agar can be an innovative alternative to synthetic polymers used in horticulture as they contain active biostimulant compounds and also reported to hold water in the soil that aids plant growth with minimum water consumption than usually required. A. aritis being one of the most consumed leafy vegetables throughout the world can be harvested indoors with added nutrients and minimal water utilization.Methods: The field trial is a ...