The immediate effects of foam roller with vibration on hamstring flexibility and jump performance in healthy adults

Sohel Ahmed,Rahemun Akter 한국운동재활학회 2019 JER Vol.15 No.4

Monitoring Land-use Changes by Remote Sensing and GIS Techniques: Case Study of Barind Tract, Bangladesh

Sohel, Md. Shawkat Islam,Rana, Md. Parvez,Islam, A.Z.M. Zahedul,Akhter, Sayma Institute of Forest Science 2011 Journal of Forest Science Vol.27 No.2

The Barind tract is threatened by desertification and undergoing rapid change. In view of this fact it is very much essential to manage this barind tract under proper land-use plan. The present study evaluates the effectiveness of high-resolution satellite data and computer aided GIS techniques in assessing land-use change detection for the period 1990 to 2007 within the study area, which is very much essential to manage this barind tract under proper land-use plan, and for proper land-use plan it is necessary to get reliable information. The present study found five major land-use such as current fallow, current agriculture, settlement, irrigation water and water bodies. From the result, it is found that current fallow and water bodies decrease while settlement and current agriculture increase. Study concludes that as Barind tract is threatened by desertification, decrease of water bodies is not a good sign for the study area.

Artificial rearing of the olive fruit fly Bactrocera oleae (Rossi) (Diptera: Tephritidae) for use in the Sterile Insect Technique: improvements of the egg collection system

( Sohel Ahmad ),( Ihsan Ul Haq ),( Polychronis Rempoulakis ),( Dina Orozco ),( Andrew Jessup ),( Carlos Caceres ),( Hannes Paulus ),( Marc J. B. Vreysen ) 한국잠사학회 2016 International Journal of Industrial Entomology Vol.33 No.1

One major constraint in the development and implementation of a successful and cost-effective area-wide integrated pest management (AW-IPM) programme with a SIT component for Bactrocera oleae (Diptera: Tephritidae) is the ability to produce a large number of high quality mass-reared individuals. The aim of this study was to develop a more efficient and practical egg collection system in an attempt to improve the mass-rearing of this species. The following basic parameters were examined: egg production per female, egg hatch, pupal recovery, pupal weight, adult emergence and percentage of fliers. Three different strains (Israel wild-type, France wild-type, and Greece laboratory) were tested and each strain was evaluated for six generations. Female flies of the Israel strain produced significantly more eggs per female than the other two strains, but egg hatch was significantly lower. Egg hatch of the France wild type and the Greece laboratory strain was similar. For all other parameters, there was no significant difference between strains; however, there was a significant generational effect for all parameters observed. As a result of this study, a protocol was developed for the mass-rearing of this species that included the use of large adult holding cages that could house up to 96,000 flies per cage. The newly developed method of egg collection using a flat wax panel as one of the sides of an adult holding cage proved to be cost-effective, efficient, making colony growth easier for industrial mass-rearing.

Hybridization and Use Of Grapes as an Oviposition Substrate Improves the Adaptation of Olive Fly Bactrocera oleae (Rossi) (Diptera: Tephritidae) to Artificial Rearing Conditions

( Sohel Ahmad ),( Viwat Wornoayporn ),( Polychronis Rempoulakis ),( Emily A. Fontenot ) 한국잠사학회 2014 International Journal of Industrial Entomology Vol.29 No.2

ISSN 1598-3579, http://dx.doi.org/10.7852/ijie.2014.29.2.198 Received The olive fly Bactrocera oleae (Rossi) is the key pest for olive cultivation worldwide. Substantial effort has been invested in the development of the sterile insect technique (SIT) to control this pest. One of the limitations to develop SIT technology for olive fruit fly is the low ability of wild females to lay eggs in other medium than olive fruits, and their slow adaptation to oviposition in artificial substrates. In the present study, fruit grapes were used as an alternative egg collection medium to harvest eggs and young larvae from freshly colonized wild strains originating from France, Italy, Spain and Croatia. The larvae were allowed to develop into the fruits until the second instar, before they were extracted out and further reared on a standard artificial diet. Furthermore, F1 to F4 female flies were alternatively offered wax bottles to oviposit. Finally, the performance of hybrid strains created from crosses between wild and long colonised flies was assessed. The results showed that females of all 4 wild strains readily oviposited eggs in grapes and from the F2 generation onward, females from all strains were adapted to laying eggs in wax bottles. No difference was observed in eggs and pupae production among all strains tested. The findings are discussed for their implications on SIT application against olive fruit fly.

The Carbon Sequestration Potential of Forestry Sector: Bangladesh Context

Sohel, Md. Shawkat Islam,Rana, Md. Parvez,Alam, Mahbubul,Akhter, Sayma,Alamgir, Mohammed Institute of Forest Science 2009 Journal of Forest Science Vol.25 No.3

Forests potentially contribute to global climate change through their influence on the global carbon (C) cycle. The Kyoto Protocol provides for the involvement of developing countries in an atmospheric greenhouse gas reduction regime under its Clean Development Mechanism (CDM). Carbon credits are gained from reforestation and afforestation activities in developing countries. Bangladesh, a densely populated tropical country in South Asia, has a huge degraded forestland, which can be reforested by CDM projects. To realize the potential of the forestry sector in developing countries like Bangladesh for full-scale emission mitigation, the carbon sequestration potential should be integrated with the carbon trading system under the CDM of the Kyoto Protocol. This paper discusses the prospects of carbon trading in Bangladesh, in relation to the CDM, in the context of global warming.

Evaluation of Co-Management Impact in Protected Area: Field Experience from Rema-Kalenga Wildlife Sanctuary, Bangladesh

Sohel, Md. Shawkat Islam,Rana, Md. Parvez,Akhter, Sayma,Karim, Sheikh Md. Fazlul,Khan, Md. Mostafijur Rahman Institute of Forest Science 2009 Journal of Forest Science Vol.25 No.1

Forests render both a home and a livelihood for people living in and around them. To reconcile the need of local communities with conservation, the Nishorgo Support Project (NSP or Nishorgo) is supporting co-management in five protected areas of Bangladesh, including Rema-Kalenga Wildlife Sanctuary. The main focus of this study is to assess the effectiveness of alternate income generating activities (AIGAs) which is provided by the Nishorgo Support Project. It is a tool for reducing dependence on forest resources by people living in and around Rema-Kalenga Wildlife Sanctuary and also play effective role in forest conservation. This study compares the socioeconomic condition (income, living style etc.) and forest dependency before and after implementation of co-management activities in Rema-Kalenga Wildlife Sanctuary. A total of 11 villages (sampling intensity was 31%) namely Kalibari, Mongoliabari, Chokidarbari, Chonbari, kalenga, Krishnochura, Hatimara, Himalia, Rashidpur, Goramchori and Horinmara were studied. We surveyed 272 households in these villages (Incase of households survey, sampling intensity was 100%). Data analysis shows that the major income generating livelihood activities were agro farming (30%), followed by fuelwood collection (22.50%), nursery raising (12.5%), cattle rearing (10%), fisheries (7.50%) and others. Study also reveals that after being implementation of the co-management activities the average income levels of the studied villages have rises on 578 Tk/households (1US$ = 70 Taka, Taka means Bangladeshi currency). Further more, many of the illegal loggers became forest protector, which make their life more secured. It was also found that peoples of the study villages are now actively engaging in forest management activities and it is the only hope for conservation and restoration of forest resources not only in Rema-Kalenga Wildlife Sanctuary but also in other protected area's of our country.

E-Governance as an Anti Corruption Tool : Korean Cases

M. Sohel Iqbal,Jin-Wan Seo 한국지역정보화학회 2008 한국지역정보화학회지 Vol.11 No.2

Corruption is an impediment for development and good governance. It is more than true especially in the least developed countries(LDC), and emerging and development economies (EDE). Academics have given strong attention on corruption since last couple of decades. In this modern information age Information and Communication Technology (ICT) becomes almost compulsory in daily life. E-governance is the by-product of ICT. Effort of this study is to see e-governance as an anti corruption tool. Cases of Republic of Korea i.e., the OPEN system and the GePS will be analyzed as example. This article will identify the successful actors and factors of Republic of Korea emphasizing on stakeholder mapping through ‘DOCTORS’ and explain how e-governance help to curb corruption.

Vanadium Doped ZnS Nanoparticles: Effect of Vanadium Concentration on Structural, Optical and Electrical Properties

Md. Sohel Rana,Sujan Kumar Das,Md. Obaidur Rahman,Farid Ahmed,Md. Abul Hossain 한국전기전자재료학회 2021 Transactions on Electrical and Electronic Material Vol.22 No.5

Vanadium (V) doped zinc sulfi de (ZnS) nanoparticles have been synthesized in the doping concentration of 0.2, 0.4, 0.6, 0.8, and 1 wt% by chemical co-precipitation method, where de-ionized water was used as solvent and the precursors were Zn(CH3COO)2·2H2O, Na2S and V2O5. The synthesized nanoparticles have been characterized by XRD, UV–Vis spectroscopy, FTIR spectroscopy and precision impedance analyzer (PIA). XRD studies revealed that all the samples exhibit cubic structure and confi rmed the incorporation of V into ZnS lattice. The calculated average crystallite size was varied in the range of 2.16–2.82 nm. The red shifting of the absorption edge was observed from the UV–Vis study and the direct optical band gap (Eg ) was decreased from 3.63 to 3.35 eV with increasing the doping concentrations. The various vibrational modes were observed by the FTIR spectroscopy. The characteristic vibrational peaks were found near at 666, 615 and 478 cm −1 . The PIA study showed that frequency dependent dielectric constant, loss tangent and ac resistivity were high at the lower frequency, while the ac conductivity was low at higher frequency. The bandgap tuning behavior of ZnS nanoparticles with V-doping concentrations may find interesting applications in optoelectronic devices.

Artificial rearing of the olive fruit fly Bactrocera oleae (Rossi) (Diptera: Tephritidae) for use in the Sterile Insect Technique: improvements of the egg collection system

Ahmad, Sohel,Haq, Ihsan ul,Rempoulakis, Polychronis,Orozco, Dina,Jessup, Andrew,Caceres, Carlos,Paulus, Hannes,Vreysen, Marc J.B. Korean Society of Sericultural Science 2016 International Journal of Industrial Entomology Vol.33 No.1

One major constraint in the development and implementation of a successful and cost-effective area-wide integrated pest management (AW-IPM) programme with a SIT component for Bactrocera oleae (Diptera: Tephritidae) is the ability to produce a large number of high quality mass-reared individuals. The aim of this study was to develop a more efficient and practical egg collection system in an attempt to improve the mass-rearing of this species. The following basic parameters were examined: egg production per female, egg hatch, pupal recovery, pupal weight, adult emergence and percentage of fliers. Three different strains (Israel wild-type, France wild-type, and Greece laboratory) were tested and each strain was evaluated for six generations. Female flies of the Israel strain produced significantly more eggs per female than the other two strains, but egg hatch was significantly lower. Egg hatch of the France wild type and the Greece laboratory strain was similar. For all other parameters, there was no significant difference between strains; however, there was a significant generational effect for all parameters observed. As a result of this study, a protocol was developed for the mass-rearing of this species that included the use of large adult holding cages that could house up to 96,000 flies per cage. The newly developed method of egg collection using a flat wax panel as one of the sides of an adult holding cage proved to be cost-effective, efficient, making colony growth easier for industrial mass-rearing.

Evaluation of Co-Management Impact in Protected Area: Field Experience from Rema-Kalenga Wildlife Sanctuary, Bangladesh

Md. Shawkat Islam Sohel,Md. Parvez Rana,Sayma Akhter,Sheikh Md. Fazlul Karim,Md. Mostafijur Rahman Khan 강원대학교 산림과학연구소 2009 Journal of Forest Science Vol.25 No.1

Forests render both a home and a livelihood for people living in and around them. To reconcile the need of local communities with conservation, the Nishorgo Support Project (NSP or Nishorgo) is supporting co-management in five protected areas of Bangladesh, including Rema-Kalenga Wildlife Sanctuary. The main focus of this study is to assess the effectiveness of alternate income generating activities (AIGAs) which is provided by the Nishorgo Support Project. It is a tool for reducing dependence on forest resources by people living in and around Rema-Kalenga Wildlife Sanctuary and also play effective role in forest conservation. This study compares the socioeconomic condition (income, living style etc.) and forest dependency before and after implementation of co-management activities in Rema-Kalenga Wildlife Sanctuary. A total of 11 villages (sampling intensity was 31%) namely Kalibari, Mongoliabari, Chokidarbari, Chonbari, kalenga, Krishnochura, Hatimara, Himalia, Rashidpur, Goramchori and Horinmara were studied. We surveyed 272 households in these villages (Incase of households survey, sampling intensity was 100%). Data analysis shows that the major income generating livelihood activities were agro farming (30%), followed by fuelwood collection (22.50%), nursery raising (12.5%), cattle rearing (10%), fisheries (7.50%) and others. Study also reveals that after being implementation of the co-management activities the average income levels of the studied villages have rises on 578 Tk/households (1US$ = 70 Taka, Taka means Bangladeshi currency). Further more, many of the illegal loggers became forest protector, which make their life more secured. It was also found that peoples of the study villages are now actively engaging in forest management activities and it is the only hope for conservation and restoration of forest resources not only in Rema-Kalenga Wildlife Sanctuary but also in other protected area’s of our country.