Sohag Journal of Sciences最新文献_第4页

General Maple Code for Solving Scalar Linear Neutral Delay Differential Equations 求解标量线性中立型时滞微分方程的通用Maple代码

Sohag Journal of Sciences Pub Date : 2023-05-01 DOI: 10.21608/sjsci.2023.197035.1064

M. Bahgat

引用次数: 0

Amorphous Molybdenum Disulfide Thin Film for Photocatalysis and Gas Sensing Applications 光催化和气体传感应用的非晶二硫化钼薄膜

Sohag Journal of Sciences Pub Date : 2023-05-01 DOI: 10.21608/sjsci.2023.193578.1057

Heba F. Mohamed, H. Ali, H. Mohamed, E. Shokr

引用次数: 0

Sohag Journal of Sciences Pub Date : 2023-05-01 DOI: 10.21608/sjsci.2023.187375.1056

A. El-Sheikh, Mohamed H. Ali, El-Sayed Saber

{"title":"Intrusion-related Low Sulphidation Gold Mineralization, Wadi Hammad Area, North Eastern Desert, Egypt","authors":"A. El-Sheikh, Mohamed H. Ali, El-Sayed Saber","doi":"10.21608/sjsci.2023.187375.1056","DOIUrl":"https://doi.org/10.21608/sjsci.2023.187375.1056","url":null,"abstract":": Gold mineralization in Wadi Hammad is one of few gold occurrences located in the North Eastern Desert of Egypt, occurring at the boundary between the post-tectonic Younger granite and Dokhan volcanics along a north-south (N-S) trending shear zone between them. The main mineral assemblages include arsenopyrite-pyrite-chalcopyrite-galena-sphalerite and sphalerite-gold-covellite-cerussite-pseudomorphic iron oxides. Mineralogical and geochemical studies indicate that the mineralization is of the low sulphidation epithermal gold type, with Pb-Cu type base-metal sulfides. The hydrothermal solutions forming the mineralization have temperatures between 200 and 300 °C. The mineralization formed in three main stages; the first one includes the intrusion of younger granite into the Dokhan volcanics coeval with the initial shearing along the contact between them and responsible for the formation of the main milky white quartz–polymetallic sulfide vein. The second stage is related to later (third and fourth) deformational events responsible for the formation of the grey-colored quartz hosting sphaleriteII-gold-covellite-cerussite-pseudomorphic iron oxides and connected with the basic dolerite dykes and related hydrothermal solutions. This stage includes the release of gold from their main sulfide hosts and re-precipitation in the fractures in quartz vein and alteration zones. The results of this study reveal the existence of promising gold deposits in the North Eastern Desert (NED) of Egypt, which changes the stereotype and may set the stage for future exploration of gold in the NED. Moreover, this study unveiled the nature of the intrusion-related type of mineralization and their characteristic features which can be used in the exploration of similar types in the surrounding areas.","PeriodicalId":146413,"journal":{"name":"Sohag Journal of Sciences","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122801497","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

Protective Effect of Chitosan and Chitosan Nanoparticles on Dioxin-Induced Haematotoxicity and Nephrotoxicity in Male Albino Rats 壳聚糖及壳聚糖纳米颗粒对二恶英诱导的雄性白化大鼠血液毒性和肾毒性的保护作用

Sohag Journal of Sciences Pub Date : 2023-05-01 DOI: 10.21608/sjsci.2023.200107.1070

H. Hassanein, H. Soliman, F. Salem, F. Ahmed, H. Okail

引用次数: 0

Study of the Effect of Thickness on the Optical Properties of MnBi0.95Sb0.05 Thin Film 厚度对MnBi0.95Sb0.05薄膜光学性能影响的研究

Sohag Journal of Sciences Pub Date : 2023-05-01 DOI: 10.21608/sjsci.2023.179767.1046

E. Omar, A. Ahmed, A. Diab, H. Mohamed

引用次数: 1

Magmatism and Related Mineralizations in Wadi Hammad, North Eastern Desert, Egypt 埃及东北沙漠Wadi Hammad岩浆作用及相关矿化作用

Sohag Journal of Sciences Pub Date : 2023-05-01 DOI: 10.21608/sjsci.2023.185274.1053

El-Sayed Saber, Mohammed Ali, A. El-Sheikh

{"title":"Magmatism and Related Mineralizations in Wadi Hammad, North Eastern Desert, Egypt","authors":"El-Sayed Saber, Mohammed Ali, A. El-Sheikh","doi":"10.21608/sjsci.2023.185274.1053","DOIUrl":"https://doi.org/10.21608/sjsci.2023.185274.1053","url":null,"abstract":": Mineralization in the Wadi Hammad area is represented by polymetallic vein-type and occurs in four modes, they are mineralized main quartz vein, silicified shear zone, associated hydrothermal alterations, and breccia zones. They mainly occur in the contact between Dokhanvolcanics and Younger granites and are confined to and controlled by the Wadi Hammad shear zone. The study revealed that Dokhan volcanics have adakitic nature and are formed by slab melt. Accordingly, these rocks are favorable sites for the formation of Au-(Cu)deposits. Hammad granite rocks are characterized bymetaluminous to weakly peraluminous, span the boundary between the ilmenite-magnetite series, transitional between moderately and strongly oxidized granites, situated a relatively shallow to moderate depths (20 to 30 km), and started to crystallize at temperatures around 800 °C. It is suggested that mineralization in WadiHammad formed due to intrusion of the strongly oxidizing, water-and volatile-rich, and alkaline to alkalie-calcic magma into the adakiticDokhan volcanic leads to circulation of these fluids in the latter leaching the available metals (Au and base metals). The leached metals are deposited in preexisting open fissures at the cold end of convective cells near the surface form Au (Cu)-rich quartz veins.","PeriodicalId":146413,"journal":{"name":"Sohag Journal of Sciences","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121927537","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

Hydrogeochemical Characteristics of Groundwater from Wadi Asal and Wadi Queih, Quseir, Red Sea, Egypt 埃及红海库西尔Wadi Asal和Wadi Queih地下水水文地球化学特征

Sohag Journal of Sciences Pub Date : 2023-05-01 DOI: 10.21608/sjsci.2023.185229.1052

Amal Mosalem, Mostafa Redwan, A. A. Abdel Moneim, Shaymaa Rezk

{"title":"Hydrogeochemical Characteristics of Groundwater from Wadi Asal and Wadi Queih, Quseir, Red Sea, Egypt","authors":"Amal Mosalem, Mostafa Redwan, A. A. Abdel Moneim, Shaymaa Rezk","doi":"10.21608/sjsci.2023.185229.1052","DOIUrl":"https://doi.org/10.21608/sjsci.2023.185229.1052","url":null,"abstract":": The study area in Wadi Asal and Wadi Queih at Quseir area, Red Sea, Egypt, suffers from different natural and anthropogenic processes due to rock variability, mining, and human activities. Groundwater is the only source of fresh water in the area. Three major hydrogeological units are recorded for groundwater in the study area; the Quaternary, the fractured Precambrian, and the Phanerozoic aquifers. The hydrogeochemical properties of groundwater were evaluated through the chemical analysis of 5 collected water samples from available wells in the study area. The resulting groundwater is characterized by Ca 2+ > Na + > Mg 2+ and Cl – > SO 4 2− > HCO 3 – , in Queih wells while Asal has Na + > Ca 2+ > Mg 2+ and Cl – > SO 4 2− > HCO 3 – . The hydrochemical facies in this area fall in the field of Ca-Na-Cl-SO 4 for Queih, and Na-Ca-Cl-SO 4 for Asal, indicating Ca 2+ and Na + are the dominant cations in the groundwaters from Queih and Asal areas with mixing or dissolution (for Queih water samples) and reverse ion exchange reactions (for Asal water samples) as the prevalent hydrochemical processes controlling their chemistry. High K + and NO 3 – in Queih are due to agricultural activities accelerated by using potassium fertilizers. TDS is more than 3000 mg/L, and the Middle Miocene sandstone aquifer of Asal water is more saline than the Cretaceous aquifers of Queih due to the presence of faults and dykes that allows water to infiltrate with great leaching processes from surrounding aquifers lithologies. Monitoring the natural and anthropogenic activities that influence groundwater quality around Safaga-Quseir District, Red Sea, is essential for the future sustainable management of water resources.","PeriodicalId":146413,"journal":{"name":"Sohag Journal of Sciences","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115210483","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

Studying the Characteristics and Performance of a New Heterogeneous Catalyst Pre-templated Using Cu(II) Schiff Base Complex on reducing 4-nitrophenol. 铜(II)希夫碱配合物预模板制备新型非均相催化剂还原4-硝基苯酚的特性与性能研究

Sohag Journal of Sciences Pub Date : 2023-05-01 DOI: 10.21608/sjsci.2023.183901.1054

L. Abdel‐Rahman, K. Mohammed, E. Ahmed, Salah Alzarzah, Ahmed Nafady

{"title":"Studying the Characteristics and Performance of a New Heterogeneous Catalyst Pre-templated Using Cu(II) Schiff Base Complex on reducing 4-nitrophenol.","authors":"L. Abdel‐Rahman, K. Mohammed, E. Ahmed, Salah Alzarzah, Ahmed Nafady","doi":"10.21608/sjsci.2023.183901.1054","DOIUrl":"https://doi.org/10.21608/sjsci.2023.183901.1054","url":null,"abstract":": The conversion of nitro compounds to their corresponding amino compounds by reduction route is a significant chemical reaction from an industrial and environmental standpoint. In the present paper, copper Schiff base complex was successfully prepared from the reaction between (1, 1 -(pyridine-2,3-dimethyl imino methyl)naphthalene-2,2 –diol) and Cu(CH 3 COO) 2 salt. This was successfully characterized with different techniques and grafted over graphene oxide (GO) as support after functionalizing it via chemical grafting using aminopropyltriethoxysilane (APTES) as a linker to obtain the functionalized form (FGO). The new heterogeneous complex (CuMGO) was depicted using physicochemical and spectroscopic tools such as FT-IR, UV-Vis, SEM, XRD, Raman spectroscopy, and XPS. The results manifest that Cu(II) imine complex was successfully immobilized on GO. The resulting catalyst was used to reduce 4-nitrophenol (4-NP) to its corresponding amine 4-aminophenol (4-AP) at room temperature in case of using hydrazine hydrate as a reducing agent. It showed good activity with a percent of conversion (44.4%) and an apparent rate constant of 2.06 × 10-3 min-1 in about 130 min. The prepared catalyst can be recycled five times without losing its activity.","PeriodicalId":146413,"journal":{"name":"Sohag Journal of Sciences","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115351975","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

Solid Phases of Zn in Some Contaminated Soils in Sohag, Egypt. 埃及Sohag污染土壤中锌的固相特征

Sohag Journal of Sciences Pub Date : 2023-05-01 DOI: 10.21608/sjsci.2023.182605.1049

Wafaa Abdelaal, S. el-gendi, O. Negim, A. El-Shater

引用次数: 0

Advancements in Fixed Point Results of Generalized Metric Spaces: A Survey 广义度量空间不动点结果的研究进展

Sohag Journal of Sciences Pub Date : 2023-05-01 DOI: 10.21608/sjsci.2023.167850.1039

J. Jiddah, S. Mohammed, A. Imam

引用次数: 4