مجلة علوم البحار والتقنيات البيئية最新文献_第3页

LB Films of Octadecanoyl Hydroxamic Acid as Barrier against Copper Corrosion 十八烷羟肟酸LB膜抗铜腐蚀性能研究

مجلة علوم البحار والتقنيات البيئية Pub Date : 2021-12-31 DOI: 10.59743/jmset.v7i2.20

F. Al-Taher, M. Shaglouf

引用次数: 0

TEM Image Analysis of Fracture Surfaces of P91 Steel and Comparison with Mechanical Properties P91钢断口的TEM图像分析及力学性能比较

مجلة علوم البحار والتقنيات البيئية Pub Date : 2021-12-31 DOI: 10.59743/jmset.v7i2.22

A. Hemer, L. J. Milovic, Muammar M. Ben Isa, Abdusalam M. Sharf, يرحم دممح ركبوبأ

{"title":"TEM Image Analysis of Fracture Surfaces of P91 Steel and Comparison with Mechanical Properties","authors":"A. Hemer, L. J. Milovic, Muammar M. Ben Isa, Abdusalam M. Sharf, يرحم دممح ركبوبأ","doi":"10.59743/jmset.v7i2.22","DOIUrl":"https://doi.org/10.59743/jmset.v7i2.22","url":null,"abstract":"In order to improve the efficiency of steam boilers in modern power plants, engineers have to use contemporary materials that enable exploitation at higher parameters, primarily operating temperature and pressure, with resistance to different forms of corrosion at the same time. For that purpose, contemporary 9-12Cr martensitic steels, designated P91, P92, E911, VM12-SHC, and SHM12, were developed. \u0000The paper analyzes experimental research on the behavior of commercial ferritic steel P91 samples. Behavior data on the heat affect zone (HAZ) of welded joints were obtained by testing smooth specimens produced by simulation of the new material welding. A survey of testing hardness and tensile properties is given and images of the fracture surfaces of the samples were processed. Image analysis with ImagePro Plus confirmed experimental testing results for the grain size measured by the circle method and a comparative relationship between the percentage of carbides, precipitates, and lamellar diameters with respect to temperature is provided. The material that was PWHT (post-weld heat treatment) has the highest mean value of lamellar diameter, which indicates increased toughness and decreased hardness compared to BM and material without PWHT i.e (The higher lamellar diameter, the smaller material hardness).","PeriodicalId":106154,"journal":{"name":"مجلة علوم البحار والتقنيات البيئية","volume":"185 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131485853","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

Review of Potential Effects of Oil Spills on Coastal and Marine Resources on Western Libyan Coastal 石油泄漏对利比亚西部沿海和海洋资源的潜在影响综述

مجلة علوم البحار والتقنيات البيئية Pub Date : 2021-12-31 DOI: 10.59743/jmset.v7i2.14

Mohamed F. Shehada, Mohamed Y. Omar, A. Mehanna, Mousa S. Sharedy

引用次数: 2

Determine of Nitrogen Dioxide Emissions over Khuoms City in Libya Using MODIS and TROPOMI Satellites 利用MODIS和TROPOMI卫星测定利比亚Khuoms市上空二氧化氮排放量

مجلة علوم البحار والتقنيات البيئية Pub Date : 2021-12-31 DOI: 10.59743/jmset.v7i2.18

Dawi Muftah Ageel

{"title":"Determine of Nitrogen Dioxide Emissions over Khuoms City in Libya Using MODIS and TROPOMI Satellites","authors":"Dawi Muftah Ageel","doi":"10.59743/jmset.v7i2.18","DOIUrl":"https://doi.org/10.59743/jmset.v7i2.18","url":null,"abstract":"Sentinel-5 Forerunner (S-5P), carrying the TROPO round recognition Instrument (TROPOMI) nadir-viewing crystal spectroscope, is that the beginning mission of the Copernicus Program committed to the recognition of air quality. Within the given data the TROPOMI tropospheric gas (NO2) level-2 (L2) item has been substantially over capably sullied urban districts by comparison with coincident high-resolution MODIS remote detecting observations (1 km×1 km). Satellite products may be ideally surveyed backed by 5 bands, as an out-measured amount of lackey pixels may be completely mapped within the system of the S-5P approval campaign over Khumos town in Libya. Each piece of information was taken in 2020 over a power station in Khuoms city in Libya, for mapping the level dissemination of tropospheric NO2, each image pixel was fully covered by approximately 370 to 700 nm for visible spectrum (MODIS and TROPOMI pixels). The TROPOMI and MODIS NO2 emissions were similar in concept, the regression analysis of both data with well correlated (R2= 0.87), and there is a negative relationship (−0.03×1015 molec/cm2) recorded when clouds and dust were prevalent over the study area. From the results obtained from MODIS and TROPOMI data, nitrogen dioxide emissions were high to medium (6.6 to 3.2×1015 molec/cm2) at their source and five kilometers from the source, while the rest of the study area ranged from (2.2 to 0.15×1015 molec/cm2) low to very low.","PeriodicalId":106154,"journal":{"name":"مجلة علوم البحار والتقنيات البيئية","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129959687","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

Health Effects of Environmental Pollutants on Workers in the Libyan Plastic Factories, Part B: Based on Molecular Levels Characteristics 环境污染物对利比亚塑料工厂工人健康的影响，B部分:基于分子水平特征

مجلة علوم البحار والتقنيات البيئية Pub Date : 2021-12-31 DOI: 10.59743/jmset.v7i2.16

Suliman O. Alayeb

{"title":"Health Effects of Environmental Pollutants on Workers in the Libyan Plastic Factories, Part B: Based on Molecular Levels Characteristics","authors":"Suliman O. Alayeb","doi":"10.59743/jmset.v7i2.16","DOIUrl":"https://doi.org/10.59743/jmset.v7i2.16","url":null,"abstract":"This study aimed to disclose the reasons for the health damage and heritable genetic mutations among workers in plastic manufactories due to negative environmental impacts. Moreover, this study may constitute an initial database that expresses the negative impact on the environment in the plastics factories that may have a negative impact on workers. To study the effects of long-term exposure to plastic and its solvent vapors during plastic manifesting on the blood DNA contents, blood samples were withdrawn from volunteers working in a plastics factory in Kasr Alakhyar city, Libya. Six different samples were collected from Workers exposed to plastic vapor for different periods as follows, control (did not expose to plastic vapor), one-year exposure, three years' exposure, six years' exposure, seven years' exposure, and twelve years' exposure. \u0000Blood samples were collected and subjected to molecular analysis using randomly amplified polymorphic DNA (RAPD) and inter simple sequence repeats (ISSR). Molecular analyses were performed to assess the genotoxicity effect of plastic vapor on the molecular level. On the molecular level, the DNA of the six aforementioned volunteers was extracted and subjected to RAPD analysis. The results showed several differences in the banding patterns was recorded between the control volunteer and volunteer and those who exposed to plastic and its solvents vapor for different exposure periods. These changes in the banding patterns suggested that a modification in the genomic DNA occurred in form of modifications in the nitrogen bases of the genomic DNA as a response to the exposure to plastic vapor for a different time exposure.","PeriodicalId":106154,"journal":{"name":"مجلة علوم البحار والتقنيات البيئية","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124238040","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

تحسين خاصية الحماية من التآكل للصلب المنخفض الكروم في البيئات الرطبة 提高潮湿环境中低铬钢的防腐蚀性能

مجلة علوم البحار والتقنيات البيئية Pub Date : 2021-12-31 DOI: 10.59743/jmset.v7i2.25

عبد الله بن ناصر بن محمد سلطان, فتحي الساحلي

{"title":"تحسين خاصية الحماية من التآكل للصلب المنخفض الكروم في البيئات الرطبة","authors":"عبد الله بن ناصر بن محمد سلطان, فتحي الساحلي","doi":"10.59743/jmset.v7i2.25","DOIUrl":"https://doi.org/10.59743/jmset.v7i2.25","url":null,"abstract":"يستخدم الصلب منخفض الكروم فى الصناعات النفطية والبتروكيميائية على نطاق واسع لقدرته على التخميل وحماية نفسه من التآكل، ولكن عند وجود الكروم بكمية منخفضة تم تسجيل معدلات تآكل أعلى لهذا الصلب في الأجواء الرطبة. أجريت اختبارات الأكسدة للصلب P-5(5%Cr) و(9%Cr)P-91 في خليط من الغازات ممثل بالصيغة 21% نيتروجين و 79% بخار ماء عند درجة حرارة 500oم باستخدام تقنية التحليل الحراري الوزني(TGA). أظهرت نتائج الاختبارات أن الصلب P-91 يحتفظ بمقاومة أكسدة أفضل من الصلب P-5 في بيئة (H2O+N2)، كما أدى إضافة الأكسجين الحر إلى تقليل معدل تآكل الصلب P-5 بمعدل يصل إلى 42%، إضافة إلى ذلك يمكن تحسين مقاومة التآكل للصلب P-5 إما عن طريق زيادة محتوى الكروم من 5 إلى 9% أو إضافة الأكسجين الحر 4 أضعاف كمية الماء الموجودة في البيئة الرطبة المدروسة.","PeriodicalId":106154,"journal":{"name":"مجلة علوم البحار والتقنيات البيئية","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114845026","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

دراسة المحتوى الغذائي و نشاط التغذية لنوعين من أسماك الصاورو Trachurus trachurus (Linneaus,758) و Trachurus mediterraneus (Steindachner, 1868) في جنوب البحر المتوسط (الساحل الليبي الغربي). 研究南地中海(利比亚西海岸)的两种毛鱼的营养含量和营养活动(linneus,758)和副鱼(Steindachner, 1868)。

مجلة علوم البحار والتقنيات البيئية Pub Date : 2021-12-31 DOI: 10.59743/jmset.v7i2.4

هالة محمد الاسود

{"title":"دراسة المحتوى الغذائي و نشاط التغذية لنوعين من أسماك الصاورو Trachurus trachurus (Linneaus,758) و Trachurus mediterraneus (Steindachner, 1868) في جنوب البحر المتوسط (الساحل الليبي الغربي).","authors":"هالة محمد الاسود","doi":"10.59743/jmset.v7i2.4","DOIUrl":"https://doi.org/10.59743/jmset.v7i2.4","url":null,"abstract":"تم تجميع 235 عينة من النوعين منها 128من النوع Trachurus trachurusو107 من النوع Trachurus mediterraneus من الساحل الغربي الممتد من ساحل مدينة صرمان شرقاً إلى صبراته غرباً وتمت دراسة محتوى المعدة والنشاط الغذائي باستخدام مؤشر الأهمية النسبية ومعامل الانفراغ وقياس معامل الحالة الغذائية خلال فصلي الشتاء والربيع. وجدت نتائج الدراسة أن النوع T. trachurus يتغذى على القشريات (Shrimp, Isopoda) ويرقة Megalop larvae والديدان الحلقية (Polychaeta)، أما النوع T. mediterraneus فيتغذى على Teleostei، والقشريات ويرقاتهاShirmp, Isopoda, Megalop larvae) )، حيث كان الغذاء الرئيسي للنوعين هو القشريات، والغذاء العرضي الديدان متعددة الأشواك، كما أن نشاط التغذية ونوع الغذاء تأثر بتغير الفصل.","PeriodicalId":106154,"journal":{"name":"مجلة علوم البحار والتقنيات البيئية","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124092492","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

دراسة تأثير صرف مياه الصرف الصحي غير المعالجة على خصائص مياه ورسوبيات شاطئ البحر بمدينة زليتن، غرب ليبيا 研究未经处理的污水排放对利比亚西部泽莱顿市海水和沉积物特性的影响

مجلة علوم البحار والتقنيات البيئية Pub Date : 2021-12-31 DOI: 10.59743/jmset.v7i2.23

رمضان علي موسى

{"title":"دراسة تأثير صرف مياه الصرف الصحي غير المعالجة على خصائص مياه ورسوبيات شاطئ البحر بمدينة زليتن، غرب ليبيا","authors":"رمضان علي موسى","doi":"10.59743/jmset.v7i2.23","DOIUrl":"https://doi.org/10.59743/jmset.v7i2.23","url":null,"abstract":"هدفت الدراسة إلى تحليل مجموعة من عينات مياه ورسوبيات شاطئ مدينة زليتن بالمنطقة المتواجدة بالقرب من مخرج تصريف مياه الصرف الصحي غير المعالج، وكذلك عينات للمياه من مسافات متباعدة داخل البحر و ومقارنتها بنتائج الدراسات السابقة وذلك لمعرفة مستوى تلوث مياه البحر والرسوبيات بمنطقة الدراسة. تم تجميع عدد 10 عينات للمياه السطحية وعدد 17 عينة للترب الرسوبية، تم قياس كل من الموصلية الكهربائية (EC) وقيم الأس الهيدروجيني (pH) ومستوى الأملاح الذائبة الكلية (TDS) لعينات مياه البحر، كما تم تحديد الحجم الحبيبي لعينات رسوبيات البحر، كما تم قياس تراكيز العناصر الثقيلة في كليهما والمتمثلة في عناصر النحاس والرصاص والزنك والكادميوم. بينت نتائج الدراسة أن الأملاح الذائبة الكلية تراوحت ما بين 35.1 و37.8 جم/لتر بمياه البحر قيد الدراسة بالقرب من مخرج صرف مياه الصرف الصحي لمياه البحر وتبين أن مياه الصرف الصحي تعمل على خفض تركيز الأملاح الذائبة الكلية بمنطقة المصب، حيث تزداد الملوحة باتجاه البحر تدريجيا كلما ابتعدنا عن مواضع القاء مياه الصرف الصحي كما أن قيم التوصيل الكهربي ازدادت بزيادة الأملاح الذائبة الكلية. وكذلك بينت نتائج دراسة رسوبيات الشاطئ قيد الدراسة تدرج رماله ما بين الرمل الناعم و الرمل المتوسط، حيث يتراوح التصنيف ما بين جيد الفرز والجيد جداً ويتراوح تماثل توزيع أحجام رواسب الشاطئ ما بين الحيود السالب والموجب وهو متماثل في أغلبه. وبصفة عامة تتعرض رمال الشاطئ بمنطقة الدراسة لمستويات مختلفة من الطاقة. وأن تراكيز العناصر الثقيلة لرسوبيات الشاطئ ملوثة بعناصر الكادميوم و النحاس و الرصاص و الزنك؛ بأعلى قيمها غرب مرسى الصيد عند التقاء مياه الصرف الصحي بمياه البحر حيث توجد الطاقة الأقل لمياه البحر والرسوبيات الأنعم نسبيا، وهذا يشير إلى تأثر مياه البحر والرسوبيات بالقرب من مصب مياه الصرف الصحي بما تحيه من عناصر ثقيلة ناجمة عن عمليات صرف مياه الصرف الصحي غير المعالجة.","PeriodicalId":106154,"journal":{"name":"مجلة علوم البحار والتقنيات البيئية","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128505740","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

Palynofacies Analysis of Selected Organic-rich Shales from Libyan Sahara: Implication to Palaeoenvironment and Hydrocarbon Source Rock Potential 利比亚撒哈拉富有机质页岩古环境与烃源岩潜力的古相分析

مجلة علوم البحار والتقنيات البيئية Pub Date : 2021-12-31 DOI: 10.59743/jmset.v7i2.19

I. Shushan

{"title":"Palynofacies Analysis of Selected Organic-rich Shales from Libyan Sahara: Implication to Palaeoenvironment and Hydrocarbon Source Rock Potential","authors":"I. Shushan","doi":"10.59743/jmset.v7i2.19","DOIUrl":"https://doi.org/10.59743/jmset.v7i2.19","url":null,"abstract":"Palynofacies analysis was carried out on three (3) packages of shale-cutting samples derived from a well drilled within Gadames Basin. These included: the upper package (Carboniferous at 5,530 ft), the middle package (Carboniferous/Devonian at 5,600 ft and 5,780 ft), and the lower package (Devonian at 6,700 ft). Two palynofacies were identified: \"P-1\", involving the upper and middle packages (Carboniferous/Devonian), and \"P-2\", involving the lower package (Devonian). P-1 and P-2 were considered to form one \"palynofacies association\" located at a mud-dominated oxic shelf (distal shelf) and are analogous to other palynofacies from other countries that are characterized by the dominance of terrestrial upon marine palynomorphs and moderate to low phytoclasts and AOM respectively that typically deposited within a shoreline zone (probably fluvial-deltaic source or marginal marine environment). Spore color index \"SCI\" evaluation for source rock and thermal maturation, in turn, indicates early mature oil/gas prone (kerogen type II>III) to post mature kerogen type III>IV \"gas prone\" for the studied cutting sample packages.","PeriodicalId":106154,"journal":{"name":"مجلة علوم البحار والتقنيات البيئية","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116052762","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

Compressive Strength Improvement of Lightweight Concrete by Incorporation Waste Materials: An Experimental Investigation 掺入废料提高轻质混凝土抗压强度的试验研究

مجلة علوم البحار والتقنيات البيئية Pub Date : 2021-12-31 DOI: 10.59743/jmset.v7i2.21

Mabrooka A. Elmasri, Ahmed Abdulqadear Alaribe, Mustafa M. Amami

引用次数: 0