检索结果-南通市图书馆

Mass and charge transport relevant to the formation of toroidal lithium peroxide nanoparticles in an aprotic lithium-oxygen battery： An experimental and theoretical modeling study

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2017年第12期10卷 4327-4336页

作者： Xiangyi Luo rachid amine Kah Chun Lau Jun Lu Chun Zhan Larry A. Curtiss Said AI Hallaj Brian P. Chaplin Khalil amine Chemical Sciences and Engineering Division Argonne National Laboratory 9700 South Cass Avenue Lemont IL 60439 USA Materials Science Division Argonne National Laboratory 9700 South Cass Avenue Lemont IL 60439 USA Department of Chemical Engineering University of Illinois at Chicago 810 S. Clinton Chicago IL 60607 USA Department of Physics and Astronomy California State University Northridge 18111 Nordhoff Street Northridge CA 91330 USA

The discharge and charge mechanisms of rechargeable Li-O2 batteries have been the subject of extensive investigation recently. However, they are not fully understood yet. Here we report a systematic study of the morphological transition of Li2O2 from a single crystalline structure to a toroid like particle during the discharge-charge cycle, with the help of a theoretical model to explain the evolution of the Li2O2 at different stages of this process. The model suggests that the transition starts in the first monolayer of Li2O2, and is subsequently followed by a transition from particle growth to film growth if the applied current exceeds the exchange current for the oxygen reduction reaction in a Li-O2 cell. Furthermore, a sustainable mass transport of the diffusive active species （e.g., O2 and Li＋） and evolution of the underlying interfaces are critical to dictate desirable oxygen reduction （discharge） and evolution （charge） reactions in the oorous carbon electrode of a Li-O2 cell.

关键词： rechargeable Li-O2 battery electrocatalyst nanocomposite lithium peroxide

Enhancing Hygrothermal Performance in Multi-Zone Constructions through Phase Change Material Integration

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers in Heat and Mass Transfer 2024年第3期22卷 769-789页

作者： Abir Abboud Zakaria Triki rachid Djeffal Sidi Mohammed El amine Bekkouche Hichem Tahraoui Abdeltif Amrane Aymen Amin Assadi Lotfi Khozami Jie Zhang Laboratory of Biomaterials and Transport Phenomena University of MedeaMedea26000Algeria Unitéde Recherche Appliquée en Energies Renouvelables(URAER)Centre de Développement des Energies Renouvelables(CDER) Ghardaia47133Algeria Laboratoire de Génie des Procédés Chimiques Department of Process EngineeringUniversity of Ferhat AbbasSetif19000Algeria Universitéde Rennes Ecole Nationale Supérieure de Chimie de RennesCNRSISCR-UMR6226Rennes35000France College of Engineering Imam Mohammad Ibn Saud Islamic University(IMSIU)Riyadh11432Saudi Arabia School of Engineering Merz CourtNewcastle UniversityNewcastle upon TyneNE17RUUK

As buildings evolve to meet the challenges of energy efficiency and indoor comfort,phase change materials(PCM)emerge as a promising solution due to their ability to store and release latent *** paper explores the transformative impact of incorporating PCMon the hygrothermal dynamics of multi-zone *** study focuses on analyzing heat transfer,particularly through thermal conduction,in a wall containing PCM.A novel approach was proposed,wherein the studied system(sensitive balance)interacts directly with a latent balance to realistically define the behavior of specific humidity and mass flow *** addition,a numerical model implemented in MATLAB software has been developed to investigate the effect of integrating PCM on the hygrothermal balances inside the *** obtained results indicate a consistent response in internal temperatures,specific humidity,and mass flow rates,with temperature differences ranging from 5℃to 13℃and a maximum phase shift of 13 *** addition,the findings provided valuable insights into optimizing the design and performance of multi-zone constructions,offering a sustainable pathway for enhancing building resilience and occupant well-being.

关键词： Multi-zone constructions phase changematerial hygrothermal balances heat transfer thermal conduction energy efficiency

Facial and Orbital Emphysema after a Violent Nose-Blowing

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Otolaryngology and Head & Neck Surgery 2022年第3期11卷 107-111页

作者： Azeddine Lachkar amine Salek Drissia Benfadil Fahd Elayoubi Mohammed rachid Ghailan ENT and Head and Neck Surgery Department University Hospital Center Mohammed VI Faculty of Medicine and Pharmacy Mohammed First University Oujda Morocco

Subcutaneous orbital and facial emphysema is a rare condition that may occur after a direct or indirect sinus trauma. A case report of a 25-year-old female complaining of bilateral swelling of the eyelid, orbital area, and facial puffiness, secondary to a violent nose-blowing. Computed tomography (CT) confirmed the diagnosis of subcutaneous emphysema. The initial treatment plan was puncture-suction and prophylactic intravenous antibiotic therapy. The patient was advised to not blow her nose. There has been no improvement in the patient’s condition on the tenth day, so we performed a bilateral nasal packing by two Merocels (R), maintained for five days. After two weeks, the condition had completely resolved.

关键词： Orbital Emphysema Facial Emphysema Nose-Blowing

Estimation of the Production Cost of Date Fruits of Cultivar Majhoul (<i>Phoenix dactylifera</i>L.) and Evaluation of the Moroccan Competitiveness towards the Major Exporting Regions in the World

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Agricultural Sciences 2021年第11期12卷 1342-1351页

作者： Zineb El Bakouri Reda Meziani Mouaad amine Mazri Mustapha Ait Chitt rachid Bouamri Fatima Jaiti Faculté des Sciences et Techniques Université Moulay Ismail Errachidia Morocco Institut National de la Recherche Agronomique CRRA-Errachidia UR Systèmes Oasiens Laboratoire National de Culture des Tissus de Palmier Dattier Avenue Moulay Ali Chérif Errachidia Morocco Institut National de la Recherche Agronomique CRRA-Marrakech UR Agro-Biotechnologie Laboratoire de Biotechnologie Végétale Marrakech Morocco Domaine El Bassatine Laboratoire de Biotechnologie Meknès Morocco Ecole Nationale d’Agriculture de Meknès Department of Plant and environment Protection Km 10 Rte Haj Kaddour Meknès Morocco

The aim of the present study was to estimate the production cost of dates of cv. Majhoul (Phoenix dactylifera L.) as part of the Moroccan strategy to develop the date palm sector, and to compare it to that reported in the main exporting regions. Data were collected through surveys of farmers and farm owners carried out in the “Meski Boudnib” extension zone during 2018 and 2019, as well as from studies performed by some governmental organizations. The surveys were conducted on 30 modern and productive date palm farms, managed in monoculture and equipped with localized irrigation systems. All fixed and variable costs were calculated. It was found, through our calculations, that the subsidies from the Moroccan government reduce the average investment cost of a modern date palm farm by 56%. It was also shown that the production cost of one ton of date fruits of cv. Majhoul in the extension zone “Meski Boudnib” (Morocco) is estimated at about 6060 MAD (US$ 634.5), out of which 28% represents the labor cost and 23% represents mineral and organic fertilization costs. The findings of the present study revealed that the production cost of one ton of cv. Majhoul dates in “Meski Boudnib” is lower than those reported in the Coachella Valley (20,189 MAD/ton;US$ 2114) and the Jordan Valley (10,536 MAD/ton;US$ 1103).

关键词： Coachella Valley Cultivar Majhoul Date Palm Industry Jordan Valley Morocco Production Cost

Detection of Mycoplasma synoviae Infection in Broiler Breeder Farms of Morocco Using Serological Assays and Real Time PCR

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Life Sciences 2014年第10期8卷 815-821页

作者： Nassik Saadia Aboukhalid rachid Azzam Falak Rahmatallah Naoufal Lahlou-amine Idriss Fassi-FihriOuafaa El Houadfi Mohammed Avian Pathology Unit Department of Pathology and Veterinary Public Health Agronomy and Veterinary Institute Hassan IIRabat 10000 Morocco Immunology and Biochemistry Laboratory Faculty of Sciences Mohamed V-Agdal University Rabat 10000 Morocco University Mohammed V Souissi Mohammed V Military Teaching Hospital Research and Biosafety Level 3 Laboratory Rabat10000 Morocco Microbiology Immunology and Infectious Diseases Unit Department of Pathology and Veterinary Public Health Agronomy andVeterinary Institute Hassan II Rabat 10000 Morocco

Mycoplasma synoviae （MS） is an economically important pathogenic agent of chickens, causing air sacculitis and synovitis. The diagnosis and monitoring of M. synoviae infection is usually made using serological assays, while confirmative diagnosis is made by isolation and identifcation of the organism, because of the cross reaction between M. gallisepticum and M. synoviae. This study was conducted from 2011 to 2013 during which l l broiler breeder flocks were sampled. These farms were located in all regions of morocco, The sampling was conducted as follows： Farms were visited on day one old chicks ＂day of importation from Europe＂. 20 to 60 ＂chicks＂ were randomly sampled. At the age of 8, 16, 32 and 56 weeks, 60 blood samples and 60 tracheal swabs were collected at each sampling. The serological screening was performed using Rapid Slide Agglutination （RSA） according the OIE protocol and Indirect EL1SA （IDEXX） according the manufacturer＇s instructions. The molecular diagnosis was performed using a commercial kit of a duplex real time PCR （Life Biotechnology）. The results revealed that one day old chicks were negative to MS by RSA and PCR, however they have a variable stock of maternal antibodies （Ig-Y） detected by iELISA. The seroprevalence found by RSA is variable and increase with the age （Sth week： 55%, 16th week： 91%, 32tb and 56th week： 100%）, the same profile was traced by PCR （Sth week： 36%, 16th week： 64%, 32th week： 82%, 56th week： 100%）, however, all farms were positive by iELISA, from the first day to 56th weeks. These results show that MS infections are very frequent and very widespread among poultry breeder flocks, and showed a perfect agreement between serological tests and Real time PCR starting from 32th week of age.

关键词： Mycoplasma synoviae Rapid Slide Agglutination iEL1SA PCR broiler breeders flocks

Effect of Cellulose Microfibers from Sugar Beet Pulp By-product on the Reinforcement of HDPE Composites Prepared by Twin‐screw Extrusion and Injection Molding

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Bionic Engineering 2023年第1期20卷 349-365页

作者： Abdelghani Boussetta Anass Ait Benhamou Francisco J.Barba Nabil Grimi Mario J.Simirgiotis amine Moubarik Laboratory of Chemical Processes and Applied Materials Poly Disciplinary FacultySultan Moulay Slimane UniversityBP 592Beni-MellalMorocco Materials Science Energy and Nanoengineering(MSN)DepartmentMohammed VI Polytechnic UniversityLot 660-Hay Moulay Rachid43150Ben GuerirMorocco Materials Science and Process Optimization Laboratory Faculty of Science SemlaliaCadi Ayyad University40000MarrakechMorocco Nutrition and Food Science Area Preventive Medicine and Public HealthFood ScienceToxicology and Forensic Medicine DepartmentFaculty of PharmacyUniversitat de ValènciaAvda.Vicent Andrés Estelléss/n46100BurjassotValènciaSpain Sorbonne Université Universitéde Technologie de CompiègneLaboratoire Transformations Intégrées de La Matière Renouvelable(UTC/ESCOMEA 4297 TIMR)Centre de recherches RoyallieuCS 6031960203Compiègne CedexFrance Campus Isla Teja Institute of PharmacyFaculty of SciencesUniversidad Austral de Chile5090000ValdiviaChile

The aims of this work turn towards the valorization of the underutilized Raw Sugar Beet Pulp by-product to produce white Cellulose Microfibers(CMFs),and its potential effect as a reinforcement for the development of High-Density Polyethylene(HDPE)*** CMFs were first obtained by subjecting raw SBP to alkali and bleaching *** characterization techniques were performed to confirm the successful removal of the amorphous compounds from the surface of individual fibers,including SEM,XRD,TGA,and FT-IR *** CMF loadings(5–10 wt%)were incorporated as bio-fillers into HDPE polymer to evaluate their reinforcing ability in comparison to raw and alkali-treated SBP using twin-screw extrusion followed by injection ***–(Ethylene–Butene)–Styrene Three-Block Co-Polymer Grafted with Maleic Anhydride was used as a compatibilizer to improve the interfacial adhesion between fibers and the ***,mechanical,and rheological properties of the produced composite samples were *** was found that the Young’s modulus were gradually increased with increasing of fibers loadings,with a maximum increase of 30%and 26%observed for composite containing 10 wt%of CMFs and raw SBP,respectively,over neat ***,the use of coupling agent enhances the ductile behavior of the *** was also found that all fiber improves the hardness and toughness behavior of all reinforced composites as well as the complex modulus particularly at 10 wt%.The thermal stability slightly increases with the addition of *** study demonstrates a new route for the valorization of SBP *** fibers can be considered as a valuable bio-fillers candidate for the development of composite materials with enhanced properties.

关键词： Sugar beet pulp By-product-Cellulose HDPE Coupling agent Composite Mechanical and rheological properties

Total Hip Replacement in Young Adults Less Than Fifty Year Old: Our Experience

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Emergency Medicine 2017年第2期5卷 43-74页

作者： Adonis Magoumou Narcisse Dabiré Yassir El Andaloussi Said Abdallah amine Belmoubarik rachid Ait-Mouha Karim Ahed Nabil Omari Ahmed Reda Haddoun Driss Bennouna Mohamed Moujtahid Mohamed Nechad Mustapha Fadili Department of Orthopedic Traumatology Wing 4 Chu Ibn Rochd Casablanca Morocco

Background: We report a retrospective study of 47 total prosthesis of hip put in place among the young adult of less than fifty years in the service of Traumatology and Orthopedics at the Wing IV of the CHU Ibn Rochd of Casablanca, over a period from January 2008 to March 2014, with an average rate of decline of 42 months. Results: The deliberate group of 43 patients (47 hips including 4 bilateral) consisted of 26 women, either 60, 47% and 17 men, either 39, 53%. The average age of our patients was 36 years. In our series, the predominant etiology has been conducted for the indication of the hip replacement was the aseptic osteonecrosis of the femoral head which has represented 31.91%. With regards to the choice of implants, 85% of PTH were non-cemented, the cemented PTH has been used in 15% of cases. The Friction Torque metal/polyethylene was used in all cases. The functional outcome was appreciated by the rating of Merle of Aubigne before and after arthroplasty. The average rate of decline of 42 months, and the results were generally satisfactory. They were excellent in 27.78% of cases, very good in 19.44% of cases and good in 44.44% of cases. The results on the Pain were remarkable: the rating of the pain going 2.8 in pre-operative at 5.6 at the latest decline. The results on the walking and mobility were also good. It was noted as a complication: 4 cases of prosthetic dislocation, 1 case of aseptic descellement bipolar, 2 cases of early sepsis on hardware, 3 cases of paralysis of the sciatic external popliteal and 4 cases of periprothetiques ossification. In total, 5 total prosthesis of hip were occasions. The young age does not seem to be an obstacle to the prosthetic surgery. Conclusion: However, a major question remains concerning the distant future of these prostheses in young active subjects, because they will be submitted for many years in a job which can cause the descellement of prosthetic parts.

关键词： Total Hip Replacement Young Subjects Hip Disease Casablanca

Al-Pillared Ghassoulite Clay as a New Green Catalyst for the Synthesis of Benzothiazoles and Benzimidazoles: Effect of amine/CEC Ratio

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Organic Chemistry 2013年第2期3卷 151-157页

作者： rachid Azzallou rachid Mamouni Kimberly Stieglitz Nabil Saffaj Mohammadine El Haddad Said Lazar Department of Science Technology Engineering and Mathematics (STEM) Biotechnology Division Roxbury Community College Boston USA Equipe de Chimie Analytique & Environnement Faculté Polydisciplinaire Université Cadi Ayyad Safi Morocco Equipe de Chimie Bio-Organique Appliquée Faculté des Sciences Université Ibn Zohr Agadir Morocco Laboratoire de Biochimie Environnement & Agroalimentaire URAC 36 Université Hassan II-MohammediaMohammedia Morocco Laboratoire de Chimie Faculté Polydisciplinaire Ouarzazate Morocco

The following article has been retracted due to the investigation of complaints received against it. The Editorial Board found that substantial portions of the text came from other published papers. The scientific community takes a very strong view on this matter, and the International Journal of Organic Chemistry treats all unethical behavior such as plagiarism seriously. This paper published in Vol.3 No.2, 151-157 (pages), 2013, has been removed from this site. Title: Al-Pillared Ghassoulite Clay as a New Green Catalyst for the Synthesis of Benzothiazoles and Benzimidazoles: Effect of amine/CEC Ratio Authors: rachid Azzallou,?rachid Mamouni,?Kimberly Stieglitz,?Nabil Saffaj, Mohammadine Said

关键词： Cation Exchange Capacity (x CEC) Benzimidazole Benzothiazole Catalyst Pillared