• Title/Summary/Keyword: Internal Exposure

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The Determinants of Potential Failure of Islamic Peer-to-Peer Lending: Perceptions of Stakeholders in Indonesia

  • MUHAMMAD, Rifqi;FAKHRUNNAS, Faaza;HANUN, Amalia Khairina
    • The Journal of Asian Finance, Economics and Business
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    • v.8 no.2
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    • pp.981-992
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    • 2021
  • This study identifies the determinants of potential failure of Islamic Peer-to-Peer (P2P) lending in Indonesia, and the mediating effect of Islamic ethics on reducing the potential for failure of Islamic P2P lending. This study uses primary data retrieved through questionnaires from the perspective of 152 stakeholders in Islamic P2P lending. Using a structural equation model (SEM), the study found that indebtedness, financing size, and governance have positive and significant relationships with the potential failure of Islamic P2P lending. This study provides evidence that the customer's internal conditions and the governance structure applied can increase the potential failure of Islamic P2P lending. Further, Islamic ethics is evidently able to partially reduce the potential failure of Islamic P2P lending by lessening risk management exposure, but it fails to address failure through Ponzi scheme exposure. As an implication, this study suggest that Islamic P2P lending must implement Islamic ethics more comprehensively by optimizing the advisory and supervisory role of the shariah board within their overall boards of directors also in their operational activities. Finally, it also adds to the existing knowledge on financial technology literature, particularly on the determinants of potential failure of financial technology from the perspective of stakeholders.

Vibration Measurements in the Mining Industry Applying the Software Install Application to the Kosovo Energy Corporation

  • Luzha, Ibush;Baftiu, Naim;Maloku, Betim;Qarkaxhija, Jusuf
    • International Journal of Computer Science & Network Security
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    • v.22 no.8
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    • pp.362-370
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    • 2022
  • The assessment of specific impacts on the environment is a preventive measure for environmental protection which is based on the definition and proposal of measures that can prevent harmful effects, reduce or eliminate them. In the physical sense, vibration is the oscillating motion of an object with the effect of internal or external forces applied to it. People who touch a vibrating surface or object will feel these vibrations. In general, there are two types of vibration exposure. The first are the vibrations of the hands and arms transmitted by the held parts of tools or machinery. The second are whole-body vibrations transmitted from a seat or surface to a motorized car. The risk of injury to workers exposed to vibration varies depending on the size, frequency, type, duration of exposure, and organ affected. The purpose of this paper is to review the measurements of vibrations in the Kosovo Energy Corporation in the mine Sibovc Southwest, where coal with a rotary excavator is exploited and the evaluation of vibrations for working conditions for workers working in that environment and improving working conditions for the measurement of vibrations we have used the device Minimate DS 078, the purpose of such environmental impact assessment is to collect data and predict the harmful impacts on the environment, namely the impact on water, air, soil, life and health of as well as identify and propose measures that could prevent, reduce or eliminate altogether.

Assessment of occupational radiation exposure of NORM scales residues from oil and gas production

  • EL Hadji Mamadou Fall;Abderrazak Nechaf;Modou Niang;Nadia Rabia;Fatou Ndoye;Ndeye Arame Boye Faye
    • Nuclear Engineering and Technology
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    • v.55 no.5
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    • pp.1757-1762
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    • 2023
  • Radiological hazards from external exposure of naturally occurring radioactive materials (NORM) scales residues, generated during the extraction process of oil and gas production in southern Algeria, are evaluated. The activity concentrations of 226Ra, 232Th, and 40K were measured using high-purity gamma-ray spectrometry (GeHP). Mean activity concentration of 226Ra, 232Th and 40K, found in scale samples are 4082 ± 41, 1060 ± 38 and 568 ± 36 Bq kg-1, respectively. Radiological hazard parameters, such as radium equivalent (Raeq), external and internal hazard indices (Hex, Hin), and gamma index (Iγ) are also evaluated. All hazard parameter values were greater than the permissible and recommended limits and the average annual effective dose value exceeded the dose constraint (0.3 mSv y-1). However, for occasionally exposed workers, the dose rate of 0.65 ± 0.02 mSv y-1 is lower than recommended limit of 1 mSv y-1 for public.

Canine Lymphoma as a Possible Human Lymphoma Model: A Case-Series Study

  • Kiavash Hushmandi;Saied Bokaie;Darioush Shirani;Ali Taghipour
    • Journal of Veterinary Clinics
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    • v.40 no.3
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    • pp.197-202
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    • 2023
  • Canine lymphoma (cL) is the most common hematopoietic cancer in dogs. Various determinants have been evaluated to find the predisposing factors in both human and canine lymphoma. Due to common risk factors and similar pathways, cL is considered a potential model for non-Hodgkin lymphoma (NHL) in humans. In this case-series study, major hospitals in Tehran consented to take part in this study and between the years of 2020-2022, provided us with 52 cL cases which were approved by the attended pathologist. We designed a questionnaire and collected information about the dogs and their owners. Most of the owners were women, young (younger than 50 years old), had at least diplomas and interestingly were housewives or househusbands. Male dogs with middle to old age (more than 6 years) were mostly referred. The most common characteristics were neutered, normal BCS, purebred, urban but not industrial residence, previous tobacco smoke exposure but no history of previous fungicide or pesticide exposure. Also, most of them did not have any previous autoimmune or immunosuppressive diseases. Presented characteristics should be considered risk determinants but to approve their validity, they should be further evaluated in epidemiological studies.

A Study on the Evaluation of Radiological Effects on Workers from Air Contamination in Radioactive Waste Treatment Facilities (방사성 액체폐기물 처리 시설 내 공기오염에 의한 작업종사자 방사선학적 영향 평가에 대한 연구)

  • Min-Ho Lee;Woo-Beom Ha;Sang-Heon Lee;Jong-Soon Song
    • Journal of Radiation Industry
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    • v.18 no.2
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    • pp.147-153
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    • 2024
  • Radioactive liquid waste generated during operation and overhaul is collected and reused through the radioactive liquid waste treatment system and continuous monitoring system in the nuclear power plant or discharged to the outside if it satisfies the limit within the control and monitoring. However, there are concerns about boric acid management, which controls the power output of nuclear power plants in radioactive liquid waste. Due to the behavior of boric acid, it is difficult to remove it in the existing liquid radwaste system, and the concentration of boric acid water discharged tends to be higher than the natural state of 5 ppm, so additional facilities should be considered. Therefore, this study aims to evaluate the radiological effects of radioactive waste treatment facilities that are under development and use them as a basis for managing worker exposure and evaluating the safety of facilities in the future.

Clinical Study on Mesothelioma of the Pleura (원발성 흉막중피종의 임상적 고찰)

  • Shim, Tae-Sun;Kim, Ho-Joong;Choe, Hyung-Seok;Lee, Hyuk-Pyo;Seo, Ji-Young;Kim, Young-Whan;Shim, Young-Soo;Kim, Keun-Youl;Han, Yong-Chol
    • Tuberculosis and Respiratory Diseases
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    • v.38 no.2
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    • pp.135-142
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    • 1991
  • We reviewed 15 cases of mesothelioma of the pleura, of which three cases were localized benign form and 12 cases were malignant diffuse form. The tumors were distributed equally in both sexes, and occured most commonly in fifth to seventh decades. The history of exposure to asbestos was present in only one case. The chief complaints were mainly chest pain and dyspnea. Associated symptoms were cough, sputum, hemoptysis, weight loss, anorexia, chill. On physical examination, unilateral, decreased breathing sound was main feature. The simple chest radiograph showed masses in all localized mesotheliomas (100%) and in 2 diffuse mesotheliomas (17%). 8 cases of diffuse mesotheliomas (67%) showed unilateral pleural effusions. Pleural effusions were mainly bloody (67%), and almost all were exudates. In all localized mesotheliomas, final diagnosis was made by open thoracotomy. In diffuse mesotheliomas, final diagnosis was made by open thoracotomy in 7 cases, chest wall mass biopsy in 2 cases, thoracoscopic biopsy in 1 case, pleural biopsy in 1 case, and pleural biopsy combined with axillary lymph node biopsy in 1 case. Localized mesotheliomas were treated by simple excision with good prognosis. In diffuse mesotheliomas, surgical treatment (pleuropneumonectomy, pleurectomy), chemotherapy, or radiotherapy, alone or in combination, were used with dismal prognosis. The prognostic factors were not found due to the small number of cases, incomplete follow up, and early drop out.

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Clinical Characteristics of Acute Pure Organophosphate Compounds Poisoning - 38 Multi-centers Survey in South Korea - (국내 유기인계 농약 중독 환자의 특성 분석 - 다기관 연구 보고 분석 -)

  • Lee, Mi-Jin;Kwon, Woon-Yong;Park, Joon-Seok;Eo, Eun-Kyung;Oh, Bum-Jin;Lee, Sung-Woo;Suh, Joo-Hyun;Roh, Hyung-Keun
    • Journal of The Korean Society of Clinical Toxicology
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    • v.5 no.1
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    • pp.27-35
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    • 2007
  • Purpose: Organophosphate (OP) compounds insecticides are the most commonly associated with serious human toxicity all over the world. The aim of this study was to identify sociocultural factors that contribute to high incidence of pure OP poisoning and prevent OP poisoning in order to reduce the factors responsible for deaths in South Korea. Methods: This is the 38 multi-centers survey and prospective study of pure OP poisoning by structural reporting system and hospital records from August 2005 to July 2006. 238 patients with acute pure OP poisoning were enrolled. We collected patient information regarding poisoning, clinical, and demographic features. Results: The mean age was 55.32±17.3 years old. The most frequent site of exposure was their own residence(85.7%). Frequent compounds involving pure OP poisoning were dichlorvos(22.7%), methidathion(8.4%), and phosphamidon(6.7%). Intentional poisoning was 77.9%. The most frequently route of exposure was ingestion(94.5%). The mean arrival time to hospital after poisoning was 12.7 hours and mean hospitalization duration was 12.9 days. 2-PAM was administered to 101 patients in mean doses of 6.3 g/day intravenously. Atropine was administered to 81 patients in mean doses of 74.6 mg/day (maximal 910 mg/day). The presence of lower level of GCS score, respiratory complications, hypotension, acute renal failure, and serious dysrhythmia was associated with serious and fatal poisoning. Overall final mortality in pure OP poisoning was 9.7%(23/238). Conclusion: This study highlights the problem of pure OP poisoning in South Korea as a basic national survey. Futhermore this might help the establishment of strict policies availability of OP and the statistics of OP poison exposure in South Korea.

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Expression of the Heat Shock Protein 70 Gene and External Developmental Traits of Two Bivalvia Species, Crassostrea gigas and Mytilus galloprovincialis, under Aquaculture Environments (사육환경에 따른 이매패류 (Crassostrea gigas, Mytilus galloprovincialis)의 외부형질 성장과 Heat Shock Protein 70 유전자 발현)

  • Kim, Won-Seok;Park, Kiyun;Kim, Jong Kyu;Kwak, Ihn-Sil
    • Korean Journal of Ecology and Environment
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    • v.49 no.1
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    • pp.22-30
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    • 2016
  • Environmental changes exert harmful effects on organisms inhabiting coastal regions. These changes are also associated with reduced production in aquaculture farms. In this study, we investigated internal and external responses of two Bivalvia species (Crassostrea gigas and Mytilus galloprovincialis) in Gamak Bay under stressful environmental conditions in aquaculture farms. We investigated external responses such as weight, size, and environment exposure time, and analyzed the expression of the HSP70 gene. C. gigas HSP70 gene expression level was significantly high in the C3 aquaculture farm site, but the weight and size of C. gigas were high in the C2 aquaculture farm site. The response of C. gigas HSP70 mRNA was associated with the environmental exposure time in each aquaculture farm. Expression of M. galloprovincialis HSP70 gene was found to be significantly higher in the M2 aquaculture farm site than in the M1 site, whereas the weight of M. galloprovincialis was observed to be higher in the M1 site. The size and environmental exposure time of M. galloprovincialis were similar between M1 and M2 sites. In addition, HSP70 sequences of C. gigas and M. galloprovincialis showed high similarity with that of another marine species. According to our results, there were differences in internal responses following environmental stress in aquaculture farms, with respect to HSP70 gene expression. The results suggest that the HSP70 gene is a useful molecular indicator for monitoring stress responses in Bivalvia species in the field.

Study on the Pro-apoptotic Effect of Artemisiae Capillaris Herba Extracted with Ethanol on Biliary Tract Cancer Cell Line, SNU-1196 (인진(茵蔯)의 에탄올 추출물이 담도암 세포주 SNU-1196의 apoptosis에 미치는 효과에 관한 연구)

  • Lee, Kyung-Wook;Woo, Hong-Jung
    • The Journal of Internal Korean Medicine
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    • v.33 no.4
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    • pp.587-598
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    • 2012
  • Objectives : This study was performed to elucidate the pro-apoptotic effect of Artemisiae capillaris herba extracted with ethanol on biliary tract cancer cells. Materials and Methods : The biliary tract cancer cell line SNU-1196 was used in this study. Cells were treated with different concentrations of Artemisiae capillaris herba for 24, 48 and 72 hours. After the treatment, cell viability, apoptosis, caspase activities and the mRNA expressions of the Bcl-2, Bax, P53, and P21 were measured by using MTT assay, cell cycle analysis, apoptosis assay, and RT-PCR. The cell cycle analysis was done by flow cytometry and apoptosis assay by cell death detection ELISA kit. Results : Artemisiae capillaris herba inhibited proliferation of SNU-1196 in long-time culture group with dose-dependent manner. All cells treated with Artemisiae capillaris herba showed increased apoptosis with dose- and time-dependent manner. Exposure of SNU-1196 to Artemisiae capillaris herba induced caspase-3 activation. However, apeoptosis was blocked when SNU-1196 was treated together with the pan-caspase inhibitor Z-VAD-FMK and the caspase-3 inhibitor Z-DEVE-FMK. After the treatment of Artemisiae capillaris herba, the mRNA expressions of caspase -3, -8, -9, p53, and p21 was increased in all cells. Artemisiae capillaris herba resulted in a significant decrease in Bcl-2 and an increase in Bax mRNA levels. Conclusions : These results suggest that Artemisiae capillaris herba would be beneficial in the treatment of biliary tract cancer.

Evaluation of thermal stability of quasi-isotropic composite/polymeric cylindrical structures under extreme climatic conditions

  • Gadalla, Mohamed;El Kadi, Hany
    • Structural Engineering and Mechanics
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    • v.32 no.3
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    • pp.429-445
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    • 2009
  • Thermal stability of quasi-isotropic composite and polymeric structures is considered one of the most important criteria in predicting life span of building structures. The outdoor applications of these structures have raised some legitimate concerns about their durability including moisture resistance and thermal stability. Exposure of such quasi-isotropic composite/polymeric structures to various and severe climatic conditions such as heat flux and frigid climate would change the material behavior and thermal viability and may lead to the degradation of material properties and building durability. This paper presents an analytical model for the generalized problem. This model accommodates the non-linearity and the non-homogeneity of the internal heat generated within the structure and the changes, modification to the material constants, and the structural size. The paper also investigates the effect of the incorporation of the temperature and/or material constant sensitive internal heat generation with four encountered climatic conditions on thermal stability of infinite cylindrical quasi-isotropic composite/polymeric structures. This can eventually result in the failure of such structures. Detailed critical analyses for four case studies which consider the population of the internal heat generation, cylindrical size, material constants, and four different climatic conditions are carried out. For each case of the proposed boundary conditions, the critical thermal stability parameter is determined. The results of this paper indicate that the thermal stability parameter is critically dependent on the cylinder size, material constants/selection, the convective heat transfer coefficient, subjected heat flux and other constants accrued from the structure environment.