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Variations of soil organic carbon fractions in response to conservative vegetation successions on the Loess Plateau of China

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International Soil and Water Conservation Research 2023年第3期11卷 561-571页

作者： Muhammad Imran Ghani Jing Wang Peng Li Shamina Imran Pathan Tanveer ali Sial Rahul Datta ali Mokhtar esmat f.ali Jörg Rinklebe Sabry MShaheen Mengyun Liu Hamada Abdelrahman College of Natural Resources and Environment Northwest A&F UniversityYangling Shaanxi712100China Scientific Laboratory of Heyang Agricultural Environment and farmland Cultivation Ministry of Agriculture and Rural AffairsNorthwest A&F UniversityHeyang Shaanxi714000China Dipartimento di Scienze e Tecnologie Agrarie AlimentariAmbientali e ForestaliUniversita degli Studi di FirenzePiazzale delle Cascine 2850144FlorenceItaly Department of Soil Science Sindh Agriculture University TandojamSindh70060Pakistan Department of Geology and Pedology Faculty of Forestry and Wood TechnologyMendel University in BrnoZemedelska 361300BrnoCzech Republic Cairo University Faculty of AgricultureDepartment of Agricultural EngineeringGizaEgypt Department of Biology College of ScienceTaif UniversityP.O.Box 11099Taif21944Saudi Arabia University of Wuppertal School of Architecture and Civil EngineeringInstitute of Foundation EngineeringWater-and Waste-ManagementLaboratory of Soil-and Groundwater-ManagementPauluskirchstraβe 742285WuppertalGermany International Research Centre of Nanotechnology for Himalayan Sustainability(IRCNHS) Shoolini UniversitySolan173212 Himachal PradeshIndia King Abdulaziz University Faculty of MeteorologyEnvironmentand Arid Land AgricultureDepartment of Arid Land Agriculture21589JeddahSaudi Arabia University of Kafrelsheikh Faculty of AgricultureDepartment of Soil and Water Sciences33516Kafr El-SheikhEgypt Cairo University Faculty of AgricultureSoil Science DepartmentGiza12613Egypt

Land use changes profoundly affect the equilibrium of soil organic carbon(soC)sequestration and greenhouse gas *** the current global climatic changes,it is vital to understand the influence of ecological restoration and conservation management on the dynamics of soC under different land uses,especially in erosion-endangered Loess ***,we investigated changes in soc through a suit of labile fractions,namely:light fraction organic C(LfOC),heavy fraction organic C(HfOC),coarse particulate organic C(CPOC),fine particulate organic C(fPOC),and dissolved organic C(DOC),from two forests i.e.,Robinia pseudoacacia(RP)and Platycladus orientalis(PO),with different ages,in comparison with farmland(fL).The SOC and STN contents significantly increased over 42 years in the RP forest where the contents of CPOC and fPOC were significantly higher than in the ***,total SOC and its labile fractions,in the studied land use types,significantly correlated with soil CacO3,pH,and STN contents,indicating their key roles in SoC *** results reported here from different vegetation with different ages provide a better understanding of sOC and STN alterations at different stages of vegetation *** findings suggest that long-term natural vegetation restoration could be an effective approach for SoC sequestration and soil conservation on the Loess soil.

关键词： Vegetation restoration Organic carboncontent Labile organic carbon Carbonate Soil conservation

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Effect of corn pre-puffing on the efficiency of MgO-engineered biochar for phosphorus recovery from livestock wastewater:mechanistic investigations and cost benefit analyses

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Biochar 2023年第1期5卷 462-478页

作者： Yaru Peng Yuan Luo Yimeng Li Muhammad Azeem Ronghua Li Chuchu feng Guangzhou Qu esmat f.ali Mohamed A.Hamouda Peter S.Hooda Jörg Rinklebe Ken Smith Zengqiang Zhang Sabry M.Shaheen College of Natural Resources and Environment Northwest A&F UniversityYangling 712100Shaanxi ProvinceChina Key Laboratory of Urban Environment and Health Ningbo Observation and Research StationInstitute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China Institute of Soil and Environmental Sciences Pir Mehr Ali Shah Arid Agriculture University RawalpindiRawalpindi 46300PunjabPakistan Department of Biology College of ScienceTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia Department of Civil and Environmental Engineering Faculty of EngineeringUnited Arab Emirates UniversityAl AinAbu DhabiUnited Arab Emirates School of Engineering and the Environments Kingston University LondonKingston University LondonKingston Upon Thames KT12EELondonUK University of Wuppertal School of Architecture and Civil EngineeringLaboratory of Soil and Groundwater ManagementInstitute of Foundation EngineeringWater-and Waste-ManagementPauluskirchstraße 742285 WuppertalGermany The Department of Environmental Science The University of ArizonaShantz Building Rm 4291177 E 4Th St.TucsonTucsonArizona 85721USA Department of Arid Land Agriculture Faculty of MeteorologyEnvironmentand Arid Land AgricultureKing Abdulaziz UniversityJeddah 21589Saudi Arabia Department of Soil and Water Sciences Faculty of AgricultureUniversity of KafrelsheikhKafr El-Sheikh 33516Egypt

To improve the phosphorus(P)recovery efficiency from livestock wastewater,a novel MgO doped mildewed corn biochar with thermal pre-puffing treatment(Mg-PBC)and without pre-puffing(Mg-BC)was synthesized and *** thermal-puffing pretreatment improved the effectiveness of metal soaking and MgO dispersion.P recovery time with Mg-PBC(7 h)was significantly shorter than that with Mg-BC(12 h).Moreover,Mg-PBC showed significantly higher P recovery capacity(241 mg g^(−1))than Mg-BC(96.6 mg g^(−1)).P recovery capacity of the Mg-PBC fitted to the Thomas model was 90.7 mg g^(−1),which was 4 times higher than that of Mg-BC(22.9 mg g^(−1))under column test *** mechanisms involved in P recovery included precipitation,surface complexation,and electrostatic *** adsorption,both Mg-BC and Mg-PBC showed relatively low regeneration *** P loaded Mg-BC(Mg-BC-P)and Mg-PBC(Mg-PBC-P),the later particularly,obviously increased the available P content and promoted plant *** release of P increased with time in the Mg-PBC-P treated soil,while it decreased with time in the P fertilizer treated soil.A cost-benefit analysis revealed that thermal-puffing pretreatment greatly increased the profit of MgO doped biochar from−0.66 to 5.90 US$kg^(−1).These findings highlight that biomass pre-puffing is a feasible treatment to produce MgO modified biochar and to recover P from livestock wastewater,and that the Mg-PBC-P can be used as a slow-release P fertilizer.

关键词： Engineered biochar Biomass pre-puffing Nutrient recovery Wastewater engineering Cost-benefit analysis

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Bio-assembled MgO-coated tea waste biochar efficiently decontaminates phosphate from water and kitchen waste fermentation liquid

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Biochar 2023年第1期5卷 391-408页

作者： Chuchu feng Lan Zhang Xiu Zhang Jingyu Li Yimeng Li Yaru Peng Yuan Luo Ronghua Li Bin Gao Mohamed A.Hamouda Ken Smith esmat f.ali Sang Soo Lee Zengqiang Zhang Jörg Rinklebe Sabry M.Shaheen College of Natural Resources and Environment Northwest A&F UniversityYangling 712100ShaanxiChina Ningxia Key Laboratory for the Development and Application of Microbial Resources in Extreme Environments North Minzu UniversityYinchuan 750021Ningxia Hui Autonomous RegionChina Department of Agricultural and Biological Engineering University of FloridaGainesvilleFL 32611USA Department of Civil and Environmental Engineering Faculty of EngineeringUnited Arab Emirates UniversityAl AinAbu DhabiUnited Arab Emirates The Department of Environmental Science The University of ArizonaShantz Building Rm 4291177 E 4th St.TucsonAZ 85721USA Department of Biology College of ScienceTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia Department of Environmental and Energy Engineering Yonsei UniversityWonju 26493Republic of Korea School of Architecture and Civil Engineering Laboratory of Soil and Groundwater ManagementInstitute of Foundation EngineeringWater-and Waste-ManagementUniversity of WuppertalPauluskirchstraße 742285 WuppertalGermany Department of Arid Land Agriculture Faculty of MeteorologyEnvironmentand Arid Land AgricultureKing Abdulaziz UniversityJeddah 21589Saudi Arabia Department of Soil and Water Sciences Faculty of AgricultureUniversity of KafrelsheikhKafr El-Sheikh 33516Egypt

Crystal morphology of metal oxides in engineered metal-biochar composites governs the removal of phosphorus(P)from aqueous *** to our best knowledge,preparation of bio-assembled MgO-coated biochar and its application for the removal of P from solutions and kitchen waste fermentation liquids have not yet been ***,in this study,a needle-like MgO particle coated tea waste biochar composite(MTC)was prepared through a novel biological assembly and template elimination *** produced MTC was used as an adsorbent for removing P from a synthetic solution and real kitchen waste fermentation *** maximum P sorption capacities of the MTC,deduced from the Langmuir model,were 58.80 mg g^(−1) from the solution at pH 7 and 192.8 mg g^(−1) from the fermentation liquid at pH *** increase of ionic strength(0-0.1 mol L^(−1) NaNO_(3))reduced P removal efficiency from 98.53%to 93.01%in the synthetic solution but had no significant impact on P removal from the fermentation *** of MgHPO4 and Mg(H_(2)PO_(4))_(2)(76.5%),ligand exchange(18.0%),and electrostatic attraction(5.5%)were the potential mechanisms for P sorption from the synthetic solution,while struvite formation(57.6%)and ligand exchange(42.2%)governed the sorption of P from the kitchen waste fermentation *** to previously reported MgO-biochar composites,MTC had a lower P sorption capacity in phosphate solution but a higher P sorption capacity in fermentation ***,the studied MTC could be used as an effective candidate for the removal of P from aqueous environments,and especially from the fermentation *** the future,it will be necessary to systematically compare the performance of metal-biochar composites with different metal oxide crystal morphology for P removal from different types of wastewater.

关键词： MgO carbon composite Biowaste-derived biochar Phosphorus sorption fermentation liquid Dephosphorization

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Impacts of Online Remote Education on the Learning Process among Nursing Students

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Open Journal of Nursing 2020年第9期10卷 810-830页

作者： Kawther Abdel Ghafar ali Hoda esmat Mahmoud Khalil fatma Mokhtar El-Sharkawy faculty of Applied Medical Science Misr University for Science and Technology Giza Egypt

The period of existence and spread of Corona virus has led to the use of all means of remote education as an urgent necessity for all educational facilities, especially universities. Aim: Therefore, it was necessary to study the impacts of online remote education on the learning process among nursing students through studying of two courses;health information management at 6th semester and gerontology nursing course at 4th semester. Tool of Data Collection: A modified questionnaire comprised of forty statements was used through paper-based survey and online survey. Sample: A total samples (224) of nursing students were participated in the survey who enrolled in 2019 and 2020 spring semesters. Setting: The field of study was the nursing department of Applied Medical Science at Misr University for Science and Technology. Results: Induced positive impacts of online education on the learning process for nursing students experience were proven as more than half of the students (53.9%) had prior experience on online system use, and more than two thirds (62.5%) were competent in mobile/computer applications. Almost, two thirds (59.3%) agreed about online assessment experience, except that the online exam was anxious, and the time was insufficient to answer all questions. Also, more than two thirds (64.7%) agreed about the learning process of the two nursing courses. Conclusion: The study concluded that there were positive impacts of online education system on the learning process for nursing students except that the students were not able to decide that the remote online education system can replace traditional face-to-face learning as the clinical experience was not evaluated through this study. Recommendation: This study is recommended to be repeated on a large scale of participants to assess the possibility of achieving clinical experience through onlin

关键词： Corona Virus COVID-19 Online Assessment Online Education Remote Education Learning Process Nursing Students Misr University for Science and Technology

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Noninvasive assessment of hepatic fibrosis in Egyptian patients with chronic hepatitis C virus infection

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World Journal of Gastroenterology 2012年第23期18卷 2988-2994页

作者： Shawky Abdelhamid fouad Serag esmat Dalia Omran Laila Rashid Mohamed H Kobaisi Department of Internal Medicine Faculty of Medicine Cairo University Cairo 11562 Egypt Department of Tropical Medicine Faculty of Medicine Cairo University Cairo 11562 Egypt Department of Biochemistry Faculty of Medicine Cairo University Cairo 11562 Egypt Department of Pathology National Institute of Nephrology Cairo 35789 Egypt

AIM: To evaluate the accuracy of specific biochemical markers for the assessment of hepatic fibrosis in patients with chronic hepatitis C virus (HCV) infection. METHODS: One hundred and fifty-four patients with chronic HCV infection were included in this study; 124 patients were non-cirrhotic, and 30 were cirrhotic. The following measurements were obtained in all patients: serum alanine aminotransferase (ALT), aspartate aminotransferase (AST), albumin, total bilirubin, prothrombin time and concentration, complete blood count, hepatitis B surface antigen (HBsAg), HCVAb, HCV-RNA by quantitative polymerase chain reaction, abdominal ultrasound and ultrasonic-guided liver biopsy. The following ratios, scores and indices were calculated and compared with the results of the histopathological examination: AST/ALT ratio (AAR), age platelet index (API), AST to platelet ratio index (APRI), cirrhosis discriminating score (CDS), Pohl score, G teborg University Cirrhosis Index (GUCI). RESULTS: AAR, APRI, API and GUCI demonstrated good diagnostic accuracy of liver cirrhosis (80.5%, 79.2%, 76.6% and 80.5%, respectively); P values were: ff values of 1.2 and 1.5, respectively. APRI, API and GUCI were significantly correlated with the stage of fibrosis (P f activity (P ficantly with the stage of fibrosis (P f activity (P > 0.05). In addition, we found significant correlations for the AAR, APRI, API, GUCI and Pohl score between the non-cirrhotic (f0, f1, f2, f3) and cirrhotic (f4) groups (P values: ficant correlation (P > 0.05). CONCLUSION: The use of AAR, APRI, API, GUCI and Pohl score measurements may decrease the need

关键词： Age platelet index Aspartate aminotrans-ferase platelet ratio index Aspartate aminotransferase-to-alanine aminotransferase ratio Cirrhosis discrimi-nating score fibrosis evaluation G^teborg UniversityCirrhosis Index Hepatitis C virus infection Liver fibro-sis Pohl score

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Predictors of Complete Early Virological Response to Pegylated Interferon and Ribavirin in Egyptian Patients with Chronic Hepatitis C Genotype 4

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Advances in Infectious Diseases 2013年第2期3卷 78-83页

作者： Gamal El Din esmat Gamil Maissa El Said El Raziky Rabab Maamoun Salama Wafaa Ahmed El Akel Waleed fouad fathalah Dina Ismail Attia Endemic Medicine and Hepatology Department Faculty of Medicine Cairo University Cairo Egypt

We aim to determine the baseline factors associated with partial and cEVR by analyzing the data of 1861 Egyptian patients treated for 12 weeks with a course of Peg-IfN plus RBV. Base line data of 1861 Egyptian patients with chronic hepatitis C coming at Cairo-fatemic Hospital for HCV treatment were studied including full clinical, Ultrasonographic examination, laboratory evaluation and liver biopsy. The most significant variables in relation to complete early virological response were low Hb level (13 gm/dl) with p 0.01, the stage of fibrosis p value f inflammation p value were associated with less achievement of c EVR. We conclude that identifying the most significant predictors of response such as Hb, stage of fibrosis f, at baseline before initiating treatment is mandatory to predict which patient will be more expected to achieve a cEVR and thus reducing the side-effects and healthcare costs associated with interferon therapies.

关键词： Predictors of Response cEVR HCV Treatment Peg IfN/Ribavirin

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