Monitoring of thermal damages upon grinding of hardened steel using Barkhausen noise analysis

Ashish Srivastava,Akash Awale,Meghanshu Vashista,Mohd Zaheer Khan Yusufzai 대한기계학회 2020 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.34 No.5

Thermal damage restrict the capability of grinding in achieving the desired production rate; therefore, the present study focuses on the employment of a non-destructive Barkhausen noise (BN) technique in the assessment of thermal damages produced from grinding of hardened IS 2062 steel under dry (no lubrication) and wet (with lubrication) conditions. Optical microscopy along with microhardness measurement was utilized to reveal the microstructural and hardness alternation occurred in the ground and subsurface of sample. X- ray diffraction peak shift was measured and used for qualitative analysis of residual stress. Furthermore, surface topography was obtained by scanning electron microscope. The magnetic response from ground surface were measured in terms of Barkhausen noise (root mean square) and hysteresis loop (average permeability). The result shows very poor magnetic response from ground hardened steel due to higher carbon content. A non-linear variation is observed between peak shift and root mean square value of Barkhausen noise. However, average permeability derived from hysteresis loop shows good correlation with the peak shift with a correlation coefficient of approximately 0.8149.

Assessment of the Contribution of Microfinance to Entrepreneurship Development in MOGADISHU

Mohamud, Isse Abdikadir,Awale, Abdirahman Abdinur East Asia Business Economics Association 2016 East asian journal of business management Vol.4 No.3

Delivery of microfinance services to operators of small and medium enterprises (SMEs) is increasingly being viewed as a strategic means of assisting growth and development. The purpose of this study was to assess the contribution of microfinance to entrepreneurship development in Mogadishu. Survey research design was adopted and Primary data was collected by using questionnaires. This research study used purposive sampling method to select 120 respondents; but 108 were found usable and analyzed. The data was analyzed using descriptive statistics. This study found the access of microfinance services to the SMEs is poor. This study also found due to the collateral, short term repayment challenges, small and medium businesses are difficult to access loan from microfinance institutions which hinder their entrepreneurship development. In addition to these, this study found that the Microfinance institutions play significance role to the growth and sustainable development of SMEs and also increases the productivity and profitability of small and medium enterprises. This study recommends the guidelines of microfinance institutions to finance SMEs needs to be flexible and microfinance institutions should give technical assistant to the SME to ensure success in the SME sector. The study also suggests access of microfinance services to the SMEs should be facilitated and awareness to microfinance purposes and activities should be created.

Review of Series of 9 Cases of Hepatolithiasis Managed at Community-Based Hospital of Nepal

( Sujan Gautam ),( Narendra Pandit ),( Laligen Awale ),( Kunal Bikram Deo ),( Tek Narayan Yadav ),( Shailesha Dhikary ) 대한간학회 2020 춘·추계 학술대회 (KASL) Vol.2020 No.1

Aims: Hepatolithiasis is a rare disease with high rate of treatment failure and recurrence. This study aims to review the management and outcome of hepatolithiasis from an endemic region. Methods: Retrospective review of prospectively maintained database of patients with hepatolithiasis managed surgically (2015- 2019) was performed. Diagnosis was based on the clinical findings and radiological investigation (CT/MRI). Demographic data, clinical presentation, extent of disease and operative procedure were evaluated. The outcome measures included immediate stone clearance, postoperative complications. Results: Hepatolithiasis was seen in nine (0.34%) out of 2,600 patients being evaluated for gallstone disease. Three patients were young, while the remaining six were in the middle-age group. Seven (78%) were females. The presenting symptoms were abdominal pain (78%) and jaundice (22%). Hepatolithiasis was located in the left, right and bilateral ductal systems in 5, 1 and 3 patients respectively. Concomitant cholelithiasis and choledocholithiasis was seen in 6 (66.6%) patients each. Liver resection for unilateral disease was done in 3 (33.3%) patients: left hepatectomy- (n=2) and left lateral segmentectomy (n=1). High bile duct exploration and bilio-enteric drainage was done in 5 patients. One patient required hepatolithotomy and T-tube drainage due to cholangitis. Complete stone clearance was achieved in 78% of patients. Complications included minor surgical site infection and cholangitis in two patients. Histopathology revealed recurrent pyogenic cholangitis. At median follow-up of 28 months, 78% are symptom-free. Conclusions: Hepatectomy is an effective treatment when disease is confined to the left lobe. Combined surgical procedure is an acceptable option for bilateral or right-sided hepatolithiasis.

Assessment of the Contribution of Microfinance to Entrepreneurship Development in MOGADISHU

Isse Abdikadir Mohamud,Abdirahman Abdinur Awale 동아시아경상학회 2016 The East Asian Journal of Business Economics Vol.4 No.3

Delivery of microfinance services to operators of small and medium enterprises (SMEs) is increasingly being viewed as a strategic means of assisting growth and development. The purpose of this study was to assess the contribution of microfinance to entrepreneurship development in Mogadishu. Survey research design was adopted and Primary data was collected by using questionnaires. This research study used purposive sampling method to select 120 respondents; but 108 were found usable and analyzed. The data was analyzed using descriptive statistics. This study found the access of microfinance services to the SMEs is poor. This study also found due to the collateral, short term repayment challenges, small and medium businesses are difficult to access loan from microfinance institutions which hinder their entrepreneurship development. In addition to these, this study found that the Microfinance institutions play significance role to the growth and sustainable development of SMEs and also increases the productivity and profitability of small and medium enterprises. This study recommends the guidelines of microfinance institutions to finance SMEs needs to be flexible and microfinance institutions should give technical assistant to the SME to ensure success in the SME sector. The study also suggests access of microfinance services to the SMEs should be facilitated and awareness to microfinance purposes and activities should be created.

Thiocyanate functionalized ionic liquid electrolyte for photoelectrochemical study of cadmium selenide pebbles

Pawar, S.A.,Patil, D.S.,Patil, S.K.,Awale, D.V.,Devan, R.S.,Ma, Y.R.,Kolekar, S.S.,Kim, J.H.,Patil, P.S. Pergamon Press 2014 ELECTROCHIMICA ACTA Vol.148 No.-

A thiocyanate functionalized ionic liquid based electrolyte is developed for the application in CdSe thin film solar cell. An aqueous solvent consisting of polysulfide and thiocyanate functionalized IL has been found as the optimum solvent for preparing the liquid electrolytes. This solvent ratio appears to give higher cell efficiency compared to pure aqueous polysulfide electrolyte. Polysulfide and thiocyanate functionalized IL give rise to a good redox couple in the electrolyte for photoelectrochemical performance. The CdSe photoanode used for solar cell study has been synthesized by a simple and cost-effective one-step, one-pot chemical bath deposition method onto the F: SnO<SUB>2</SUB> substrates. The as-deposited films were annealed at temperatures 100, 200, 300 and 400<SUP>o</SUP>C, respectively for 1h in ambient air. The maximum current density of 3.55mA/cm<SUP>2</SUP> for the sample annealed at 300<SUP>o</SUP>C is observed in the polysulfide electrolyte with the power conversion efficiency 0.76%. Addition of thiocyanate functionalized IL in polysulfide produced the highest current density of 4.93mA/cm<SUP>2</SUP> with the two fold increase in the power conversion efficiency up to 1.32%.

Tailor-made dicationic ionic liquid as a fluorescent sensor for detection of hydroquinone and catechol

Patil, Sandip K.,Patil, Suryakant A.,Vadiyar, Madagonda M.,Awale, Deepak V.,Sartape, Ashish S.,Walekar, Laxman S.,Kolekar, Govind B.,Ghorpade, Uma V.,Kim, Jin H.,Kolekar, Sanjay S. Elsevier 2017 Journal of molecular liquids Vol.244 No.-

<P>We are exploring a geminal dicationic ionic liquid (DCIL), 1,1'-(propane-1,3-diyl)bis(4-aminopyridin-1-ium) dihydroxide, [C-3(Amp)(2)][OH](2) as a fluorescent probe for detection of dihydroxybenzenes viz. hydroquinone (HQ) and catechol (CC). Simple and sensitive spectrofluorometric method is described which accomplished with efficient quenching of fluorescence of aqueous DCIL by dihydroxybenzenes. The sensor offers good linear detection range of 1-400 mu M and 1-1000 mu M with detection limits of 0.31 mu M and 0.40 mu M for HQ and CC, respectively. Under alkaline conditions HQ/CC oxidizes to corresponding benzoquinones which interact with DCIL and consequently quenching of fluorescence is occurred. This essential alkaline condition is in situ provided by purposefully tuned DCIL to having basic nature. The plausible quenching mechanism that involves photo-induced charge transfer pathway is evidently discussed. The proposed method is competent over a broad detection range. Selectivity of method is demonstrated by scrutinizing intervention of various interfering species. Recoveries from water sample analysis emphasize the possible use of DCIL probe in the detection of HQ and CC from water sources. The proposed method certainly confers a new approach in sensing techniques for dihydroxybenzenes. (C) 2017 Published by Elsevier B.V.</P>

Hydroxy functionalized ionic liquids as promising electrolytes for supercapacitor study of α-Fe2O3 thin films

Patil, Sandip K.,Vadiyar, Madagonda M.,Bhise, Sagar C.,Patil, Suryakant A.,Awale, Deepak V.,Ghorpade, Uma V.,Kim, Jin H.,Ghule, Anil V.,Kolekar, Sanjay S. Chapman and Hall 2017 Journal of materials science Materials in electron Vol. No.

Does Perceived Organizational Politics Mediate the Relationship between Job Satisfaction and Organizational Citizenship Behavior? Insights from Bangladesh

AWAL, Md. Rabiul,SAHA, Amitav,ISLAM, Mirajul Korea Distribution Science Association 2022 Asian journal of business environment Vol.12 No.4

Purpose: This study mainly aims to investigate the connection between job satisfaction and organizational citizenship behavior of bank employee. Another objective of this study is to check out the mediating impact of perceived organizational politics of bank personnel on the connection between their job happiness and citizenship behavior. Research design, data and methodology: Snowball sampling is utilized in this study, which is done among bank personnel at different public and private banks across north-eastern region of Bangladesh as well as information is accumulated through the use of a five-point Likert-scale questionnaire. IBM SPSS v22, Andrew F. Hayes process macro v3.5 and SmartPLS 3 are used to complete descriptive and inferential statistics. Results: The study results explore that employees' political perception has a negative influence on organizational citizenship behavior where bank employees' job happiness has a positive impact on structural citizenship manners and negative impact on perceived organizational politics. Surprisingly, perceptions of organizational politics were found to have an insignificant mediating effect on the connection between job satisfaction and organizational citizenship behavior. Conclusions: The present study reveals that satisfied bank personnel shows positive and constructive actions toward their organization where their political perception has an insignificant mediation.

방글라데시 開發硏究所

Raisul Awal Mahmood 한국ILO협회 1998 한국ILO협회 발간물 Vol.1998 No.06

Improvement Effects of Bottom Lateral Bracings on Dynamic Performance of Curved Steel Twin I-Girder Bridges under Running Vehicles

Md. Robiul Awall,Toshiro Hayashikawa,Xingwen He,Takashi Matsumoto 한국강구조학회 2013 International Journal of Steel Structures Vol.13 No.2

The torsional stiffness of curved twin I-girder bridges is very low, which may lead to a vulnerability to eccentric dynamic loads. This study is intended to investigate the improvement effect of bottom lateral bracings on dynamic performance of curved twin I-girder bridges under running vehicles, using a developed numerical approach. In this approach, to conduct the running vehicle-bridge interaction analysis, finite element method is used to create the detailed models of both the curved bridge and the running vehicle. Parametric studies are carried out using these numerical models to investigate the effect of bottom lateral bracings on the dynamic performance of the curved bridge under running vehicles. The numerical results indicate that the proposed bottom lateral bracing systems can increase the torsional stiffness of the bridge, whose increasing rate depends on the type of bracing configuration. The bottom lateral bracings can also distribute dynamic loads smoothly between the two main girders, which leads to a more stable structure.