Building Resilience at Universities: Role of Innovation and Entrepreneurship最新文献_第4页

Investigational Study for the efficiency of Fe3O4@SiO2 nanoparticles in the Oil Recovery Process using glass micromodel 利用玻璃微模型研究Fe3O4@SiO2纳米颗粒在采油过程中的效率

Building Resilience at Universities: Role of Innovation and Entrepreneurship Pub Date : 2021-10-20 DOI: 10.29117/quarfe.2021.0062

Wamda Elhaj, F. Almomani

{"title":"Investigational Study for the efficiency of Fe3O4@SiO2 nanoparticles in the Oil Recovery Process using glass micromodel","authors":"Wamda Elhaj, F. Almomani","doi":"10.29117/quarfe.2021.0062","DOIUrl":"https://doi.org/10.29117/quarfe.2021.0062","url":null,"abstract":"Nanofluids have shown their potential in the oil recovery process through surface modification. Due to their surface characteristics, they can apply to improve the oil production from reservoirs by enabling different enhanced recovery mechanisms. The preparation and development of the Fe3O4@SiO2 nanoparticles for the oil recovery process is an innovative and novel approach that influences the oil generation from reservoirs. The performance of the Fe3O4@SiO2 and the other nanofluids (seawater, Fe3O4, and SiO2) in the enhanced oil recovery process is assessed and compared with other flooding scenarios. The Fe3O4@SiO2 NPs achieved the highest oil production rate of 90.2%, while Fe3O4 and SiO2 NPs achieved 70.8% and 55.3%, respectively. In contrast, the value achieved for the seawater injection was 76.5%. For the oil recovery process, the Fe3O4 was applied for the inhibition (i.e., decrease) of oil sedimentation, and the SiO2 NPs were applied for wettability alteration and IFT reduction. The experimental results showed that the produced Fe3O4@SiO2 NPs improved the oil recovery rates (90.2%) as well as the synergetic impact of the developed NPs by initiating several mechanisms corresponding to the use of the separate NPs in the micromodel. Moreover, the results exhibited that the reservoir conditions are a crucial function for increasing the oil recovery rates, improving the emulsion stability, and is a substantial step for the oil recovery method that applies this particular technique.","PeriodicalId":9295,"journal":{"name":"Building Resilience at Universities: Role of Innovation and Entrepreneurship","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86173719","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

The Efficacy of Two Household Cleaning and Disinfecting Agents on Lentil (Lens culinaris Medik) and Faba bean (Vicia faba) Seed Germination 两种家用清洁消毒剂对小扁豆(Lens culinaris Medik)和蚕豆种子发芽的影响

Building Resilience at Universities: Role of Innovation and Entrepreneurship Pub Date : 2021-10-20 DOI: 10.29117/quarfe.2021.0023

Ahmed Helmy Hassan Abouelezz, T. Ahmed

{"title":"The Efficacy of Two Household Cleaning and Disinfecting Agents on Lentil (Lens culinaris Medik) and Faba bean (Vicia faba) Seed Germination","authors":"Ahmed Helmy Hassan Abouelezz, T. Ahmed","doi":"10.29117/quarfe.2021.0023","DOIUrl":"https://doi.org/10.29117/quarfe.2021.0023","url":null,"abstract":"A germination test of Vicia faba and Lens culinaris seeds under the effect of bleach and vinegar was conducted for seven days, and the observations were recorded daily. The completely randomized design (CRD) was used to examine the germination with three replicates at the lab conditions. Six germination parameters were measured, including germination percentage (GP), germination index (GI), mean germination time (MGT), mean germination rate (MGR), vigour index (VI), plus the fresh weight (FW) and dry weight (DW) of Vicia faba and Lens culinaris seeds. As a legume crop seeds model, the efficacy of four treatment levels from 0.005% to 0.5% of bleach and vinegar on the germination was tested. A chemical analysis was performed using the ion chromatography (IC) to evaluate the effect of chloride and acetate anions up-take on the seedling germination in addition to other essential nutrients. A significant inhibition in seedling growth was observed with increasing the treatment concentration. The maximum inhibition was recorded for both seeds at 0.5%, followed by 0.1% levels, while a positive effect was represented with the lower concentrations. The chemical analysis of the up-taking active ingredients was corroborated by the germination outputs.","PeriodicalId":9295,"journal":{"name":"Building Resilience at Universities: Role of Innovation and Entrepreneurship","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88745569","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

The Influence of Qatari Dust on the Element Composition of Marine Plankton 卡塔尔粉尘对海洋浮游生物元素组成的影响

Building Resilience at Universities: Role of Innovation and Entrepreneurship Pub Date : 2021-10-20 DOI: 10.29117/quarfe.2021.0019

O. Yigiterhan, Jassem A. Al-Thani, S. Dib, H. Alsaadi, E. M. Al-Ansari

{"title":"The Influence of Qatari Dust on the Element Composition of Marine Plankton","authors":"O. Yigiterhan, Jassem A. Al-Thani, S. Dib, H. Alsaadi, E. M. Al-Ansari","doi":"10.29117/quarfe.2021.0019","DOIUrl":"https://doi.org/10.29117/quarfe.2021.0019","url":null,"abstract":"The Exclusive Economic Zone (EEZ) of Qatar is affected by extreme dust and extensive industrialization, making it an ideal location to examine influences of coastal processes on biological activity, which greatly affects marine biogeochemical cycling. In this study, the influence of dust on the trace element composition of plankton and how distance from shore effects elemental concentrations in marine plankton was investigated. Samples were collected using net tows with mesh sizes of 50 (bulkplankton) and 200 (zooplankton) mm size-fractions in 2012 and 2014 to examine temporal and spatial variabilities. The samples were strong acid digested and analyzed using ICP-OES. Trace metal clean techniques were used. The biogenic concentrations of trace metals were determined by correcting the bulk analyses for the lithogenic contribution using aluminum content of Qatari dust as a lithogenic tracer. The relative trace metal composition of plankton from EEZ of Qatar is Fe > Zn ≈ Cu > V ≈ Ni ≈ Cr ≈ As ≈ Mo > Cd ≈ Co. Small and large size planktonic compositions were similar, except for Ba, Mn, Pb, Mo which were higher in zooplankton than bulkplankton. It was not clear if the variability was due to differences in biology, proximity to the coast or interannual effects. The geochemical and statistical analysis suggested that the concentrations of Al, Fe, Cr, Co, Mn, Ni, Pb, Li in net-tow plankton samples were mostly of lithogenic (dust) and Cd, Cu, Mo, Zn, Ca are most likely of biogenic/anthropogenic origin. The excess concentrations relative to average dust from Qatar for most elements (except Cd) decreased with distance from shore. This may be due to contamination or uncertainties with the lithogenic correction or due to our sampling locations in a marginal sea, dominated by dust input. This is an aspect of this study that warrants more research.","PeriodicalId":9295,"journal":{"name":"Building Resilience at Universities: Role of Innovation and Entrepreneurship","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77042042","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

Additive Manufacturing of Smart Material and Complex Structures 智能材料和复杂结构的增材制造

Building Resilience at Universities: Role of Innovation and Entrepreneurship Pub Date : 2021-10-20 DOI: 10.29117/quarfe.2021.0079

Sajeel N K, Muni Raj Maurya, Mohammed Houkan, K. K. Sadasivuni

引用次数: 0

Is curcumin at the threshold of therapeutic effectiveness on patients with colon cancer? – A systematic review 姜黄素对结肠癌患者有治疗效果吗?-系统检讨

Building Resilience at Universities: Role of Innovation and Entrepreneurship Pub Date : 2021-10-20 DOI: 10.29117/quarfe.2021.0118

Laila Shafei, M. Izham, N. Billa

引用次数: 0

Reno-protective Effect of Angiotensin Receptor Blocker in Spontaneously Hypertensive Rat Models: A Systematic Review 血管紧张素受体阻滞剂对自发性高血压大鼠肾保护作用的系统综述

Building Resilience at Universities: Role of Innovation and Entrepreneurship Pub Date : 2021-10-20 DOI: 10.29117/quarfe.2021.0111

Salma Mohammed AlDakhakhny, Mohamed Izham Mohamed Ibrahim, H. Rathore, M. Hamed

{"title":"Reno-protective Effect of Angiotensin Receptor Blocker in Spontaneously Hypertensive Rat Models: A Systematic Review","authors":"Salma Mohammed AlDakhakhny, Mohamed Izham Mohamed Ibrahim, H. Rathore, M. Hamed","doi":"10.29117/quarfe.2021.0111","DOIUrl":"https://doi.org/10.29117/quarfe.2021.0111","url":null,"abstract":"Background Chronic Kidney Disease (CKD) is highly prevalent among hypertensive population. Previous date from studies and experiments have confirmed the reno-protective effect and tolerability of angiotensin receptor blockers in diabetic nephropathy. However, clinical data are lacking in hypertensive population. Objectives This is the first meta-analysis to evaluate the surrogate outcomes of renal protection with ARBs in hypertensive rodents to serve as a baseline for further studies. Methods The systematic review was conducted following the PRISM checklist. Four different databases were searched including PubMed, EMBASE, ScienceDirect and SCOPUS. No restrictions were applied on dose, duration of follow up or ARBs used. Inclusion was restricted to experimental studies reporting means and SEM, published in English, addressing the PICO question and having a moderate to high quality. 37 total eligible articles were identified and Results: Of 25 reported primary outcomes in comparison to hypertensive untreated controls, 23 studies showed positive results supporting that ARBs induce reduction in proteinuria and/or albuminuria compared to hypertensive untreated controls. Similarly, in comparison to normotensive untreated controls, 9 of 12 studies showed positive results supporting that ARBs’ induced reduction in proteinuria and/or albuminuria can reach levels similar to normotensive controls. For the secondary outcomes, 12 of 18 reported outcomes showed significant improvement in CrCl or reduction in BUN compared to hypertensive untreated rats. Similarly, 10 of 17 outcomes reported showed that the improvement in secondary outcomes reached levels that are comparable to normotensive controls. Conclusion: Qualitative data from this systematic review support that ARBs have a Reno-protective effect in different hypertensive models and the effect is independent of BP lowering.","PeriodicalId":9295,"journal":{"name":"Building Resilience at Universities: Role of Innovation and Entrepreneurship","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87318549","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

Nurses’ Knowledge and Attitudes about Adult Post-operative Pain Assessment and Management: A Cross-Sectional Study in Qatar 卡塔尔护士对成人术后疼痛评估和处理的知识和态度:一项横断面研究

Building Resilience at Universities: Role of Innovation and Entrepreneurship Pub Date : 2021-10-20 DOI: 10.29117/quarfe.2021.0101

Haya Samara, L. OHara

{"title":"Nurses’ Knowledge and Attitudes about Adult Post-operative Pain Assessment and Management: A Cross-Sectional Study in Qatar","authors":"Haya Samara, L. OHara","doi":"10.29117/quarfe.2021.0101","DOIUrl":"https://doi.org/10.29117/quarfe.2021.0101","url":null,"abstract":"Background: Pain has been described by clinicians, patients, and researchers alike as a complex and challenging phenomenon. People have different experiences of pain. Nurses’ negative attitudes and lack of knowledge are major impediments to effective pain management. Methods: The study was a cross-sectional online survey using a validated self-administered questionnaire for post-operative registered nurses working in Hamad Medical Corporation in Qatar. The dependent outcome was the score on the Knowledge and Attitudes Survey Regarding Pain. Results: A total of 151 post-operative nurses participated in the study. The mean knowledge and attitudes (K&A) score was 19.6 (SD 4.5) out of 41 (48%), indicating a huge deficit in the nurses’ knowledge and attitudes about adult post-operative pain. No sociodemographic variables were associated with K&A scores. Neither the facility the nurses worked at nor hours of previous pain education were associated with K&A scores. Conclusions: There is a significant deficit in post-operative nurses’ knowledge and attitudes about pain in Hamad Medical Corporation, with no significant differences based on demographics or other characteristics. This suggests the deficit is widespread within the nursing workforce in Qatar. This deficit is potentially impacting significantly on pain assessment and management for adults in post-operative settings. Pragmatic research on evidence-based nursing educational courses focused on pain assessment and management is required to enhance nurses’ knowledge and attitudes and improve patient care. Key messages: Strategies to strengthen nurses’ knowledge and attitudes toward pain in Qatar must be developed and tested.","PeriodicalId":9295,"journal":{"name":"Building Resilience at Universities: Role of Innovation and Entrepreneurship","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87708611","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: 3

Novel Prosopis Juliflora Leaf Ethanolic extract as natural Antifungal agent against Botrytis Cinerea: Application on Strawberries’ shelf-life extension 新型黄豆叶乙醇提取物作为天然抗葡萄孢菌剂在草莓保鲜期中的应用

Building Resilience at Universities: Role of Innovation and Entrepreneurship Pub Date : 2021-10-20 DOI: 10.29117/quarfe.2021.0044

Iman Saleh, Mohammed H. Abu-Dieyeh

{"title":"Novel Prosopis Juliflora Leaf Ethanolic extract as natural Antifungal agent against Botrytis Cinerea: Application on Strawberries’ shelf-life extension","authors":"Iman Saleh, Mohammed H. Abu-Dieyeh","doi":"10.29117/quarfe.2021.0044","DOIUrl":"https://doi.org/10.29117/quarfe.2021.0044","url":null,"abstract":"Spoilage from fresh produces is a worldwide concern that accompanies the global increase in food demand. Adverse human health and environmental effects of commercial pesticides is a major public concern. Botrytis cinerea is one of the top ten pathogens that affect fresh produce including strawberries’ shelf-life around the world. Botrytis cinerea can progress easily from infected fruits to healthy ones even at low storage temperatures, which can lead to spoilage of entire lots in few weeks. Strawberries are widely consumed raw berries, which are famous in their processed forms such as jam and juices. The delicate fruit has a very short postharvest life. It is susceptible to mechanical injuries, fast dehydration and fungal infection. Prosopis juliflora is an invasive tree in many countries including Qatar. In this report, the Prosopis juliflora water soluble leaves ethanolic (PJ-WS-LE) novel extraction method will be described with an evaluation of its effectiveness as antifungal agent and possible coating material for shelf-life extension. PJ-WS-LE extract showed total inhibition of Botrytis cinerea growth with a minimum inhibitory concentration of 1mg/ml. Exposure to the extract affected badly the structure of the hyphal fungi. The extract extended also strawberries’ shelf-life by 2.32X. PJ-WS-LE extract will be chemically described and its effectiveness in the extension of other fresh produces’ shelf-life will be evaluated.","PeriodicalId":9295,"journal":{"name":"Building Resilience at Universities: Role of Innovation and Entrepreneurship","volume":"56 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86031456","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

Experimental Investigation of Innovative Thermal Mechanical Refrigeration System 新型热力机械制冷系统的实验研究

Building Resilience at Universities: Role of Innovation and Entrepreneurship Pub Date : 2021-10-20 DOI: 10.29117/quarfe.2021.0005

Ahmad K. Sleiti, Wahib A. Al‐Ammari, M. Al-Khawaja

{"title":"Experimental Investigation of Innovative Thermal Mechanical Refrigeration System","authors":"Ahmad K. Sleiti, Wahib A. Al‐Ammari, M. Al-Khawaja","doi":"10.29117/quarfe.2021.0005","DOIUrl":"https://doi.org/10.29117/quarfe.2021.0005","url":null,"abstract":"The current electrical refrigeration and air condition systems are considered as one of the major sources for ozone depletion and global warming problems. Furthermore, they consume a large percentage of the worldwide gross production of electricity (around 17%). Therefore, developing new refrigeration systems that might be able to work using renewable sources (solar, geothermal, etc.) and waste heat sources is necessary to address these problems. In this paper, the experimental investigation of an innovative thermal-mechanical refrigeration (TMR) system is presented. The TMR system replaces the electric compressor of the conventional refrigeration systems with an innovative expander-compressor unit (two connected double-acting cylinders). The proposed ECU can be driven by ultra-low heat temperature sources, has simple configuration, and high flexibility for the operating conditions. A hybrid electric-compressor and ECU refrigeration setup was developed to investigate the performance of the ECU and compare it to that of an electric compressor. The experiment was conducted using R134a as a working fluid at different masses. The results show that a maximum COP of 0.57 is obtained at a refrigerant mass of 30g (in electric mode) and a maximum COP of 0.41 is obtained at a refrigerant mass of 60g (in ECU mode).","PeriodicalId":9295,"journal":{"name":"Building Resilience at Universities: Role of Innovation and Entrepreneurship","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72899177","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

Material Flow Analysis of Plastic Waste in Qatar: Focusing on the Marine Environment 卡塔尔塑料废物的物质流分析:以海洋环境为重点

Building Resilience at Universities: Role of Innovation and Entrepreneurship Pub Date : 2021-10-20 DOI: 10.29117/quarfe.2021.0073

D. I. Alagha, J. Hahladakis

引用次数: 0