Journal of Pure & Applied Sciences最新文献_第4页

The Impact of Economic Sanctions on Oil Industry: A Case Study of Libya Using the Synthetic Control Method 经济制裁对石油工业的影响——以利比亚综合管制为例

Journal of Pure & Applied Sciences Pub Date : 2022-12-30 DOI: 10.51984/jopas.v21i2.2053

Basem Ertimi, Basem Oqab

{"title":"The Impact of Economic Sanctions on Oil Industry: A Case Study of Libya Using the Synthetic Control Method","authors":"Basem Ertimi, Basem Oqab","doi":"10.51984/jopas.v21i2.2053","DOIUrl":"https://doi.org/10.51984/jopas.v21i2.2053","url":null,"abstract":"This study assesses the impact of economic sanctions on oil exports and economic growth through case studies of Libya. By setting up a synthetic group method that reproduces the oil exports and economic growth of the case study before the imposition of economic sanctions, we compare the oil exports and the economic growth of the Synthetic and the actual for each period. We address a crucial gap in the literature of sanction in a petrostate case study using the synthetic control approach. Our analysis found that both petroleum exports and economic growth were lower with economic sanctions. This research is integrated into the comparative and international landscape of international influence relations with the domestic economy. Economic sanctions, the results show, are the key driver in fluctuations in oil exports and economic growth that might be represented in the oil curse. We believe that our empirical research can contribute to domestic and international policy formation by sanctioned countries. Overall, the findings confirm that sanctions may be imposed on Libya as another channel of the resource curse from the global and foreign policy perspectives.","PeriodicalId":16911,"journal":{"name":"Journal of Pure & Applied Sciences","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82468960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Determination of Stoichiometry and Stability Constant of Cd(II) and Zn(II) Complexes with Pyrazole Based Ligands in Mixed Solvent (EtOH-H2O) 吡唑类配体Cd(II)和Zn(II)配合物在混合溶剂(EtOH-H2O)中的化学计量学和稳定常数的测定

Journal of Pure & Applied Sciences Pub Date : 2022-12-20 DOI: 10.51984/jopas.v21i2.2080

K. Elsherif, Ahmed Zubi, A. Najar, Hamida Bin Ghashir

引用次数: 1

Soret Dissipation Effect On Heat And Mass Transmission Of Non-Newtonian Casson Radiative Nanofluid Flow With Lorentz Drag And Rosseland Radiation 洛伦兹阻力和罗斯兰辐射对非牛顿卡森辐射纳米流体传热传质的索氏耗散效应

Journal of Pure & Applied Sciences Pub Date : 2022-12-15 DOI: 10.51984/jopas.v21i2.2059

Uka Uchenna Awucha, Amadi Okechukwub

{"title":"Soret Dissipation Effect On Heat And Mass Transmission Of Non-Newtonian Casson Radiative Nanofluid Flow With Lorentz Drag And Rosseland Radiation","authors":"Uka Uchenna Awucha, Amadi Okechukwub","doi":"10.51984/jopas.v21i2.2059","DOIUrl":"https://doi.org/10.51984/jopas.v21i2.2059","url":null,"abstract":"The goal of the current study considers the impact of Lorentz force and radiation on the reactive Casson-Nanofluid flow over a flow over a stretched surface with Soret impact. However, its industrial and technological applications are numerous but not limited to solar power, glass spinning, nuclear reactors, processing and packaging of food, etc. The flow being considered is a function of the stretched surface along its direction in line with a linearly changing velocity with such distance from a given immovable point. The partial differential equations describing the momentum, energy (heat) and mass transfer equations were transformed into non-linear ordinary differential equations in non-dimensional forms through the use of the similarity variables approach. The solution which was carried out through the application of the series approximation method is presented analytically. However, the Mathematica software was used in obtaining the numerical solutions. Thus, the impacts of physical parameters of the fluid were studied. The results indicated that: the velocity of fluid flow lessens due to the combined intensification of values of the non-Newtonian Casson fluid and magnetic field parameters. An upsurge in Grashof heat and radiation factors yields a rise in the velocity. Influence of collective Casson and magnetic parameters leads to an appreciation of heat distribution. Also, the concentration field declines as both the Casson and Schmidt parameters improve. The diminishing distribution fields of both the wall energy and mass gradients are functions of the appreciating values of the non-Newtonian number. ","PeriodicalId":16911,"journal":{"name":"Journal of Pure & Applied Sciences","volume":"68 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89190241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Treatment of Heavy Metals in Water Accompanied with Oil and A Soil Using some Expired Drugs at Al-Wahat/ Libya 使用过期药物处理利比亚Al-Wahat油田含油水体和土壤中的重金属

Journal of Pure & Applied Sciences Pub Date : 2022-11-30 DOI: 10.51984/jopas.v21i2.2046

H. Matter, Tariq M. Ayad, Abdulrhman A.I. Alkatly

{"title":"Treatment of Heavy Metals in Water Accompanied with Oil and A Soil Using some Expired Drugs at Al-Wahat/ Libya","authors":"H. Matter, Tariq M. Ayad, Abdulrhman A.I. Alkatly","doi":"10.51984/jopas.v21i2.2046","DOIUrl":"https://doi.org/10.51984/jopas.v21i2.2046","url":null,"abstract":"Heavy metals associated with oil production sites are the main contamination source for surrounding environments and groundwater. Groundwater contamination with such heavy metals consist a real health concern due to its possibility to reach drinking water and irrigation water. In this study, the active chemicals in Picovit, Clara, Drill, Endocer Givescon, Hydral, Laxofin, Maxlase, Motilium, Orapen, Scopinal, Maltvitamin, and Xilone drugs have been used as chelating agents for heavy metals remediation, they are common medicines that are widely used after their expiration. The expired drugs were used to precipitate heavy metals present in the water found in the soil around petroleum production sites. Gravimetrically, different precipitation efficiencies have been recorded due to coagulation and/or chelating with the targeted heavy metals i.e., chromium, iron, nickel, cobalt, copper, zinc, silver, cadmium, mercury, and lead. Factors of pH, Concentration of heavy metals, and the ratio of coagulant to targeted wastewater have been studied regarding the precipitation efficiency using the expired drugs (as coagulants). Results revealed that the optimum precipitation efficiencies have been recorded at applied pH, and the weight of metals precipitates were recorded. The obtained results can be considered as a preliminary study towards subsequent advanced investigations in the treatment of heavy metals from different pollution sites.","PeriodicalId":16911,"journal":{"name":"Journal of Pure & Applied Sciences","volume":"59 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87489365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

تقدير عمق الجريان السطحي لحوض وادي درنة بالتكامل بين تقنيات نظم المعلومات الجغرافية و نموذج SCS-CN 通过地理信息系统技术和scu - u模型之间的整合，评估德尔纳河流域径流的深度。

Journal of Pure & Applied Sciences Pub Date : 2022-11-27 DOI: 10.51984/jopas.v21i2.2137

عبدالونيس عبدالعزيز رمضان عاشور

{"title":"تقدير عمق الجريان السطحي لحوض وادي درنة بالتكامل بين تقنيات نظم المعلومات الجغرافية و نموذج SCS-CN","authors":"عبدالونيس عبدالعزيز رمضان عاشور","doi":"10.51984/jopas.v21i2.2137","DOIUrl":"https://doi.org/10.51984/jopas.v21i2.2137","url":null,"abstract":"يعتبر الجريان السطحي نتيجة تساقط الأمطار من المكونات الهيدرولوجية الهامة في تقييم الموارد المائية. تتوفر العديد من الطرق لتقدير الجريان السطحي من الأمطار ومع ذلك تظل طريقة حفظ وصيانة الترب الأمريكية SCS-CN الأكثر شيوعًا والأكثر استخدامًا حيث أن رقم منحنى الجريان السطحي (CN) هو عامل حاسم في هذه الطريقة ويعتمد على استخدام الأرض أو غطاء الأرض (LU/LC) ونوع التربة وحالات رطوبة التربة (AMC) في تقدير الجريان السطحي. تم تطبيق هذا النهج بالتكامل مع نظم المعلومات الجغرافية (GIS) لتقدير حجم الجريان السطحي لحوض وادي درنة. تمت معالجة خرائط التربة وتصنيفها إلى مجموعات ترب هيدرولوجية (HSG) حيث كان HSG السائد في منطقة الدراسة هو التصنيف D. كذلك تم الدمج بين الطبقتين HSG و LU/LC لحساب قيم المنحنى الموزون CN لكل حالة من رطوبة التربة (AMC). من خلال تطبيق هذه الطريقة تم تقدير متوسط حجم الجريان السطحي السنوي لمدة أربعين سنة خلال الفترة 1960-2000م في منطقة الدراسة بـ 138.51 مليون متر مكعب. علاوة على ذلك تم تقدير حجم الجريان السطحي لعاصفتين مطريتين بناءً على فيضان أكتوبر عام 1945 وأواخر نوفمبر عام 1986. حيث بلغ متوسط هطول الأمطار 145.7 و 64.14 ملم على التوالي. ويتبين من الحسابات أن حجم الجريان السطحي المتشكل أثناء فيضان عام 1945 م بلغ 53.36 مليون متر مكعب بما يمثل 40٪ من حجم الجريان السنوي بينما بلغ فيضان نوفمبر 1986 قيمة 14.8 مليون متر مكعب من المياه وهي قيمة مقاربة لما تم تسجيله من قبل الهيأة العامة للمياه آنذاك. من خلال النتائج المتحصل عليها يتضح أن منطقة الدراسة معرضة لمخاطر الفيضانات. لذلك يجب اتخاذ إجراءات فورية بإجراء عملية الصيانة الدورية للسدود القائمة لأنه في حالة حدوث فيضان ضخم فان النتيجة ستكون كارثية على سكان الوادي والمدينة. كذلك إيجاد وسيلة لزيادة الغطاء النباتي بحيث لا يكون ضعيف ويسمح للتربة بالانجراف للحد من ظاهرة التصحر.","PeriodicalId":16911,"journal":{"name":"Journal of Pure & Applied Sciences","volume":"278 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77842950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

تأثير فصول السنة على محتوى بعض الفيتامينات في الطحالب البحرية بشاطئ مدينة الزاوية بليبيا 一年季对利比亚扎维耶海滩海藻某些维生素含量的影响

Journal of Pure & Applied Sciences Pub Date : 2022-11-21 DOI: 10.51984/jopas.v21i2.1264

أحميدة الزقطاط, عمر أحمد الشتيوي, فوزية قريميدة

{"title":"تأثير فصول السنة على محتوى بعض الفيتامينات في الطحالب البحرية بشاطئ مدينة الزاوية بليبيا","authors":"أحميدة الزقطاط, عمر أحمد الشتيوي, فوزية قريميدة","doi":"10.51984/jopas.v21i2.1264","DOIUrl":"https://doi.org/10.51984/jopas.v21i2.1264","url":null,"abstract":"تهدف هذه الدراسة إلى التعرف على كمية بعض الفيتامينات الذائبة في الماء وهي فيتامين ب6، فيتامين ب12 وفيتامين ج لعدد ستة أنواع من الطحالب البحرية وهي Enteromorpha compressa من الطحالب الخضراء وPdina pavonica, Cystosiera spinosa, Sargassum vulgare, Dictyota dichotoma من الطحالب البنية وJania rubens من الطحالب الحمراء بمنطقة الزاوية بليبيا. جمعت أنواع الطحالب المختلفة من أربع مواقع بمنطقة الزاوية وهي ديلة، جود دائم,، الحرشة, المطرد خلال فصول السنة من (1/9/2013 إلى 1/9/2014). تبين من خلال النتائج المتحصل عليها بأن أعلى كمية لفيتامين ب6 هي 1.02مغ/100 مليغرام )مغ( في طحلب Dictyota dichotoma بموقع ديلة بفصل الخريف وأعلى قيمة لفيتامين ب12 وهي 6.72 مغ/100مغ في الطحلب الأحمر Jania rubens بموقع ديلة في فصل الصيف وأعلى قيمة لفيتامين ج 0.129 مغ/100مغ لطحلب Dictyota dichotoma بموقع ديلة في فصل الصيف. كما يتضح من خلال نتائج التحليل الإحصائي لهذه الدراسة بأنه هناك ارتباط عالي المعنوية عند مستوى 1% (P≤ 0.01) ما بين الموقع وفيتامين ب12 (0.20)، وكذلك فيتامين ب12 وأنواع الطحالب (0.30) وفيتامين ج وأنواع الطحالب (0.42)، مما يدل على إن الظروف المناخية الفصلية والبيئية لها تأثير على كمية الفيتامينات في أنواع الطحالب المختلفة.","PeriodicalId":16911,"journal":{"name":"Journal of Pure & Applied Sciences","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85052651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

استباحة خصوصية بيانات المستخدم على الانترنت ومدى وعي المستخدمين بها في ليبيا 在利比亚的用户数据隐私和用户意识程度

Journal of Pure & Applied Sciences Pub Date : 2022-11-21 DOI: 10.51984/jopas.v21i2.2001

بلعيد الدوكالي, إبراهيم البوراصي

{"title":"استباحة خصوصية بيانات المستخدم على الانترنت ومدى وعي المستخدمين بها في ليبيا","authors":"بلعيد الدوكالي, إبراهيم البوراصي","doi":"10.51984/jopas.v21i2.2001","DOIUrl":"https://doi.org/10.51984/jopas.v21i2.2001","url":null,"abstract":"تتعرض هذه الدراسة لخصوصية بيانات المستخدم على الانترنت والتي باتت من المشاكل الكبرى في عالم الرقميات، حيث يتم تداول وتبادل بيانات المستخدمين على الانترنت بعلمهم وبدون علمهم من قبل شركات كبرى تهتم بهذه البيانات لاستخدمها في عمليات الدعاية والتسويق والدراسات الإحصائية، وتتبع سلوك المستخدمين. هذا ما أدى إلى زيادة الاهتمام بالنقاش حول التأثير المجتمعي للتكنولوجيا، والمخاطر التي تهدد خصوصية مستخدم الانترنت. انتظمت هذه الدراسة في مسارين، الأول هو تتبع ثلاثة مواقع شهيرة على الانترنت لمراقبة وتحديد ما تقوم به هذه المواقع من تتبع للمستخدمين وتبادل لبياناتهم وما يمثله هذا من انتهاك لخصوصية رواد تلك المواقع. أما المسار الثاني فهو - استبيانة تستهدف المستخدمين بشكل عام في ليبيا لمعرفة مدى وعيهم بتلك المخاطر. ثم خلصت هذه الدراسة إلى أن المواقع الثلاثة تقوم بتتبع بيانات المستخدمين وتبادلها مع مواقع أخرى، وأن عدداً كبيراً من أفراد عينة الدراسة لا يهتمون أو ليس لديهم وعي بالمخاطر التي تحيط بهم.","PeriodicalId":16911,"journal":{"name":"Journal of Pure & Applied Sciences","volume":"54 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81354873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Determination of polycyclic aromatic hydrocarbons in water using dispersive liquid-liquid microextraction-gas chromatography-mass spectrometric 分散液-液微萃取-气相色谱-质谱法测定水中多环芳烃

Journal of Pure & Applied Sciences Pub Date : 2022-11-08 DOI: 10.51984/jopas.v21i2.1661

Nada Abusalah Almabrouk Imrigha, M. M. Sanagi, Sarra Younes Sharef

{"title":"Determination of polycyclic aromatic hydrocarbons in water using dispersive liquid-liquid microextraction-gas chromatography-mass spectrometric","authors":"Nada Abusalah Almabrouk Imrigha, M. M. Sanagi, Sarra Younes Sharef","doi":"10.51984/jopas.v21i2.1661","DOIUrl":"https://doi.org/10.51984/jopas.v21i2.1661","url":null,"abstract":"For the extraction of polycyclic aromatic hydrocarbons (PAHs) from water samples, a new sample preparation approach based on dispersive liquid-liquid microextraction (DLLME) was developed. In this procedure, a water sample was injected with a mixture of carbon tetrachloride, CCl4 (extraction solvent), and acetone (disperser solvent) to generate an emulsion in which the PAHs were extracted into fine droplets of extraction solvent. The impacts of several extraction parameters were explored, including extraction solvent type, disperser solvent type, extraction solvent volume, and disperser solvent volume. For phenanthrene and fluoranthene, the calibration curve correlation coefficient (r2) was 0.9993 and 0.9973, respectively. For phenanthrene and fluoranthene, the limits of detection (LODs) were 0.0008 g/mL and 0.0006 g/mL, respectively. For phenanthrene and fluoranthene, the relative standard deviations (RSDs) were 10.69 percent and 9.72 percent, respectively. The analyte recovery rates ranged from 100.5 to 107.8%. Phenanthrene and fluoranthene were discovered in the samples.","PeriodicalId":16911,"journal":{"name":"Journal of Pure & Applied Sciences","volume":"99 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75451763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Removal of Methyl Orange Dye from Aqueous Solutions using Amberlite LA-2 as an Extractant 用安培石LA-2作为萃取剂去除水溶液中的甲基橙染料

Journal of Pure & Applied Sciences Pub Date : 2022-10-17 DOI: 10.51984/jopas.v21i2.2055

Aisha Al-abbasi, Marrow Alammarwy, Safa Abdulljaoad

引用次数: 0

A robust blind watermarking scheme based on lifting wavelet transform and hessenberg decomposition 基于提升小波变换和海森伯格分解的鲁棒盲水印方案

Journal of Pure & Applied Sciences Pub Date : 2022-10-17 DOI: 10.51984/jopas.v21i2.1934

Omar Abodena

{"title":"A robust blind watermarking scheme based on lifting wavelet transform and hessenberg decomposition","authors":"Omar Abodena","doi":"10.51984/jopas.v21i2.1934","DOIUrl":"https://doi.org/10.51984/jopas.v21i2.1934","url":null,"abstract":"In this paper, a novel robust blind grayscale image digital watermarking scheme is introduced based on lifting wavelet transform (LWT) in combination with discrete cosine transform (DCT), Hessenberg decomposition, and entropy analysis for copyright protection of multimedia information. At first, the two levels of LWT are applied to the host grayscale image to improve the imperceptibility of the watermarking scheme and then the high-frequency sub-band of the 2-level of LWT is decomposed by DCT. Next, the DCT coefficients are divided into 4×4 non-overlapping blocks. After that, Hessenberg decomposition performs on each selected block, whereas the first row, first column element of the upper Hessenberg matrix is utilized to hide the watermark. To evaluate the imperceptibility and robustness of the proposed digital watermarking scheme, the peak signal-to-noise ratio (PSNR), and normalized cross-correlation (NC) are utilized to measure the quality and the ability of the proposed watermarking scheme to robust against signal processing operations and geometric attacks. Experimental and analysis results have demonstrated that the proposed scheme is achieved a very good tradeoff between imperceptibility and robustness. The comparison with other scheme have shown that the proposed digital watermarking schemes have a superior performance in terms of imperceptibility and robustness than other. ","PeriodicalId":16911,"journal":{"name":"Journal of Pure & Applied Sciences","volume":"76 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84047123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Journal of Pure &amp; Applied Sciences最新文献

Journal of Pure & Applied Sciences最新文献