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Induksi dan Karakterisasi Pisang Mas Lumut Tetraploid Poerba, Yuyu s; ,, Witjaksono; Ahmad, F.; Handayani, Tri
JURNAL BIOLOGI INDONESIA Vol 10, No 2 (2014): Jurnal Biologi Indonesia
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (336.051 KB) | DOI: 10.14203/jbi.v10i2.2082

Abstract

Triploid banana breeding could be achieved by crossing tetraploid to diploid banana cultivars. The availaibility of tetraploidbananas is naturally very limited. One of methods to produce tetraploid bananas is inducing tetraploid plants usingchemicals that inhibit spindle fiber formation during mitosis such as oryzalin or colchicine. The present research is aimed toproduce and characterize tetraploid Pisang Mas Lumut (Musa acuminata, AAAA genome) induced by in-vitro oryzalintreatment from diploid Pisang Mas Lumut. Fifteen in vitro-cultured shoots were treated wih oryzalin at of 60μM for 7days in a liquid MS basal medium with addition of 2 mg/l BA. After 6 sub-cultured, 54 shoots and 104 plantlets wereproduced. Forty seedlings were then survived and grew well and healthy. Ploidy identification of induced Pisang MasLumut was conducted using Flowcytometer at seedling stage and repeated at reproductive phases for 2 cycles. The resultsshowed that oryzalin treatments produced tetraploids at a frequency of 30%, diploid at 65% and mixoploid at 5%. Thetetraploid plants have longer and thicker pseudostems, produce fewer suckers, drooping and larger leaves, and broader fruitscompared to its diploid control at harvest time. The tetraploid plants have similar genetic properties with their diploidcontrols as shown by genetic identity of 0.90-0.97.Key words: Pisang Mas Lumut, Musa acuminata, AA, oryzalin, tetraploid
Slope Failure Due to Effect of Damrey Typhoon in Penang Island F. Ahmad; A.S. Yahaya; M Azmi; N. Muztaza
Lowland Technology International Vol 22 No 1 (2020): Lowland Technology International Journal - Special Issue on: Engineering Geology
Publisher : International Association of Lowland Technology

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Abstract

The monsoon season in month of November till December in2017 has left Penang Island in devastated conditions where, hillslope landslide, erosion and flood took place around Penang.This was a monsoon season, however these occurrences werenot normal and Penang has accounted many slope failure,building construction collapse and flash floods. A series of failureoccurred at the surrounding slope at USM has occurred over thepast 10 years and therefore remedial work were carry out toimprove the slope on site. During the seasonal rainfalls, the slopewas heavily eroded and all the trees and grouted slope whichwas in placed before, fail to sustain from the water movement.Then a series of Soil Resistivity test on site was then explored toforesee the major problems and to counter the stability. By doingthis investigation, the purpose is to understand, analyse andrectify the situation of slope failure. From this study, we haveconducted the soil mapping of the ground to further understandthe soil condition so that all the
INDUKSI DAN KARAKTERISASI PISANG MAS LUMUT TETRAPLOID Poerba, Yuyu s; ,, Witjaksono; Ahmad, F.; Handayani, Tri
JURNAL BIOLOGI INDONESIA Vol 10, No 2 (2014): Jurnal Biologi Indonesia
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v10i2.2082

Abstract

Triploid banana breeding could be achieved by crossing tetraploid to diploid banana cultivars. The availaibility of tetraploidbananas is naturally very limited. One of methods to produce tetraploid bananas is inducing tetraploid plants usingchemicals that inhibit spindle fiber formation during mitosis such as oryzalin or colchicine. The present research is aimed toproduce and characterize tetraploid Pisang Mas Lumut (Musa acuminata, AAAA genome) induced by in-vitro oryzalintreatment from diploid Pisang Mas Lumut. Fifteen in vitro-cultured shoots were treated wih oryzalin at of 60μM for 7days in a liquid MS basal medium with addition of 2 mg/l BA. After 6 sub-cultured, 54 shoots and 104 plantlets wereproduced. Forty seedlings were then survived and grew well and healthy. Ploidy identification of induced Pisang MasLumut was conducted using Flowcytometer at seedling stage and repeated at reproductive phases for 2 cycles. The resultsshowed that oryzalin treatments produced tetraploids at a frequency of 30%, diploid at 65% and mixoploid at 5%. Thetetraploid plants have longer and thicker pseudostems, produce fewer suckers, drooping and larger leaves, and broader fruitscompared to its diploid control at harvest time. The tetraploid plants have similar genetic properties with their diploidcontrols as shown by genetic identity of 0.90-0.97.Key words: Pisang Mas Lumut, Musa acuminata, AA, oryzalin, tetraploid
Geophysical Approach for Water Seepage Study in Near Surface Assessment T Adeeko; N.M Muztaza; M.T Zakaria; N.A Ismail; N Samsudin; A.A Bery; F. Ahmad
Lowland Technology International Vol 22 No 1 (2020): Lowland Technology International Journal - Special Issue on: Engineering Geology
Publisher : International Association of Lowland Technology

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Abstract

Water seepage at urban area will affect the hydraulicconductivity and shear strength of soil that may causesubsurface problems such as landslides, sinkholes, cavities,ground subsidence and hazard to buildings. To delineateseepage pathways, geophysical data will be acquired. A studyhas been conducted at Penang to study the saturated zone,analyze the water flow directions and intensities to determinethe causes of localized near surface problems by using the 2-Dresistivity and self-potential (SP) methods. Five 2-D resistivitysurvey lines with minimum of 0.5 m electrode spacing wereexecuted using Pole-dipole array. The flow directions andintensities of the water were determined using self-potential(SP) method with interval spacing of 1 m. The inversion resultsshow the low resistivity value (1-100 Ωm) was dominant at thestudy area which was interpret as saturated zone. Resistivityvalue of 100-800 Ωm was interpret as alluvium. The resultdisplay by self-potential contour map shows the water flow fromhigher self-potential value (38 mV) towards the lower selfpotentialvalue (-22 mV) that is flow from west to east, which arerelated to seepage flow patterns, negative SP anomalies wererelated with subsurface seepage flow paths (recharge zone) andpositive SP anomalies were related with areas of seepageoutflow (discharge zone). Therefore, the two results have matchand show good correlation in water seepage investigation,which validates the results
Slope Instability Evaluation Using Geophysical Methods of Gua Musang-Cameron Highland Highway M.T Zakaria; N.M Muztaza; H. Zabidi; F. Ahmad; T.O Adeeko; N Ismail; N Samsudin
Lowland Technology International Vol 22 No 1 (2020): Lowland Technology International Journal - Special Issue on: Engineering Geology
Publisher : International Association of Lowland Technology

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Abstract

Slope failure is a complex phenomenon that may trigger theoccurrence of slope failure due to several factors. The internalstructures and mechanical properties of subsurface areimportant parameters to investigate as a pre-requisite analysis.Four parallel survey lines of 2-D resistivity and two lines ofseismic refraction were designed in order to achieve theobjectives. The model shows the resistivity values covered of 1-4000 Ωm with investigation depth of 20 m. Highly weatheredzones were identified at values of 400-450 Ωm while saturatedzones with values of <100 Ωm. The high resistivity regions withvalues of 1500-2500 Ωm indicates the weathered granite for thisarea. The 2-D seismic refraction model shows velocity valuesranging between 200-2800 m/s and depth coverage about 30 m.The result interpreted as 3 layer cases with 1st layer, 2nd layer,and 3rd layer identified at velocity of 400-600 m/s, 800-1400 m/sand >2000 m/s respectively. The low resistivity and velocityindicate as highly fractured/crack zones which able to decreasesthe shear strength of the slope soils and increases the hydraulicconductivity of the soils. The saturated zone and infiltration withthe existence of boulders indicates the factor for the occurrenceof slope failure.
Evaluation of Rock Slope Deterioration Based on Granite and Schist Rock Slopes R. Roslan; R.C. Omar; H. Taha; I.N.Z. Baharuddin; F. Ahmad
Lowland Technology International Vol 22 No 1 (2020): Lowland Technology International Journal - Special Issue on: Engineering Geology
Publisher : International Association of Lowland Technology

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Abstract

The problems of slope instability can be related to the terrainfactors and weather. In Malaysia, slope failures and landslidesare very common due to prolonged monsoon rainfalls. Theconsequences of slope instability can be hazardous to lifeincluding economic damages and costly repairs. The study wasaimed to determine the physical and mechanical properties ofthe rock slope material from selected sites. Several testsincluding field observations were performed to analyze theengineering characteristic and physical properties of this Schistrock slope and Granite rock slope. The rock samples wereclassified into various weathering grades based on variations inthese properties. Scan line methods were applied to obtain themeasurement data. Direct discontinuity surveys were carried outin interval of 10 m. Laboratory tests on the samples were donethat include two cycles of slake durability, Schmidt hammer test,point load test, petrography test, density test and direct shearbox test. The analysis on each rock types showed that theamphibolite Schist at Putrajaya has the highest rock strengthwith a uniaxial compressive strength (UCS) 487.97 Mpa which isclassified as extremely strong rock. By comparison, the UCSvalue of Granite was 267.28MPa and classified as strong rock
The Controling of Iron (Fe) Toxicity with Humic Matter from Rice Straw Compost and Water Management to Increasing Productivity Established Rice Field at Sitiung, West Sumatra Herviyanti Herviyanti; T. Budi Prasetyo; F. AHMAD; M. Harianti
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 34 (2011): Desember 2011
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n34.2011.40-47

Abstract

This experiment is held to sudy the potency of humic matter extracted from composted rice straw, combined with the various water management systems, in controlling the iron (Fe) toxicity in new-established rice field. The objective of this research is to get break through technology of controlling the iron toxicity in new-established rice field using the the humic substances and water management systems in order to get the optimum yield. This experiment uses a split-plot design with main plots are having three water management systems : continuous flooding; one week flooding and two weeks in field capacity; and two weeks flooding and two weeks in field capacity and sub-plots are having three levels of humic matter application : no humic matter; with 150 ppm humic matter = 300 kg ha-1; and with 300 ppm humic matter = 600 kg ha-1. The result shows that the application of humic matter extracted from composted rice straw decreases the Fe2+ concentration to be 135.67 ppm and 222.33 ppm in all three water management systems after eight weeks flooding. The best treatment combination is the plot with 600 kg ha-1 humic matter and 1 week flooding-2 weeks in field capacity, for it decreases Fe2+ concentration from 694 ppm down to 310 ppm, and the dry weight of grain is 1,819.7 g plot-1 (1 plot = 6 m2) or raising 770.8 g plot-1 compared with those plots with no humic matter and with continuous flooding.
Slope Stability Monitoring Using GSM Network System R.C. Omar; H. Taha; N.H.N Khalid; R. Roslan; I.N.Z. Baharuddin; F. Ahmad
Lowland Technology International Vol 22 No 1 (2020): Lowland Technology International Journal - Special Issue on: Engineering Geology
Publisher : International Association of Lowland Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Slope failure due to slope instability can initiate landslides whichmay result in loss of lives, property, infrastructures and economicloss. There are many factors that trigger slope failure such asrainfall, hydrological condition, groundwater level and geologicalformation of the slope area. However, slope failures can beprevented by monitoring high risk slopes using geotechnicalinstruments and electronic sensors. In this study, an early warningsystem was developed to immediately alert the authority and themanagement on slope stability by installing selected slopemonitoring instruments at high risk slopes with infrastructures.Slope monitoring system using wireless network is an effectivemethod to monitor the condition of slopes especially theinaccessible slopes in unsafe areas. By applying this system, themanagement can reduce cost, human resources and time onslope maintenance that can efficiently notify themaintenance team on potential unsafe slopes or slope failures
Green Logistics Adoption among 3PL Companies Rozelin Abdullah; Mat Daud; F. Ahmad; A. Shukti
International Journal of Supply Chain Management Vol 5, No 3 (2016): International Journal of Supply Chain Management (IJSCM)
Publisher : International Journal of Supply Chain Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (13.161 KB)

Abstract

Logistics is one of the causal factors of environment pollution through its activities. Previous studies had shown Green initiatives adoption by Third Party Logistics (3PL) companies may reduce environment impact. These companies are the stakeholders of logistics activities and supply chain management. The aim of the research is to discover the involvement of Third Party Logistics (3PL) companies in applying Green Logistics initiatives in the event of rendering logistics services to its customers. The parameter of this study is within the scope of 3PL companies already adopted Green Logistics practices in Malaysia. The paradigm of green logistics implementation in this study within three domains which are the customers, the logistics operations and the logistics amenities. This will identify the positive and negative impacts of adopting Green initiatives experienced by the 3PL logistics companies in satisfying its customers requirement. There are several evidence to support these adoptions through previous studies especially on the influence of Environment Management System (EMS) and Green Supply Chain Management (GSCM) practices by manufacturing companies. This paper focus on the adoption of Green Logistics initiatives by Third Party Logistics (3PL) companies in Malaysia via case study research methodology.